Imported to git.
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..1bacbd6
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,18 @@
+
+Authors of LZMA Utils
+---------------------
+
+Igor Pavlov
+ * designed LZMA as an algorithm;
+ * wrote an implementation known as LZMA SDK, which is part of
+ the bigger 7-Zip project.
+
+Ville Koskinen
+ * wrote the first version of the gzip-like lzma command line
+ utility (C++)
+ * helped a lot with the documentation.
+
+Lasse Collin
+ * ported LZMA SDK to C and zlib-like API (liblzma);
+ * rewrote the command line tool again to use liblzma and pthreads.
+
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..a17989d
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,24 @@
+
+LZMA Utils Licenses
+-------------------
+
+ Different licenses apply to different files in this package. Here
+ is a rough summary of which license apply to which parts of this
+ package (but check the individual files to be sure!):
+ - Everything under src/liblzma/check is public domain.
+ - Everything else under the src directory is under the GNU LGPL
+ 2.1 or (at your opinion) any later version.
+ - Outside the src directory, there are some files that are under
+ the GNU GPL 2 or (at your opinion) any later version, or under
+ the GNU GPL 3 or (at your opinion) any later version.
+ - Most documentation files are under an all-permissive license.
+
+ The following license texts are included in the following files
+ in this package:
+ - COPYING.LGPLv2.1: GNU Lesser General Public License version 2.1
+ - COPYING.GPLv2: GNU General Public License version 2
+ - COPYING.GPLv3: GNU General Public License version 3
+
+ If you have questions, don't hesitate to ask the copyright holder(s)
+ for more information.
+
diff --git a/COPYING.GPLv2 b/COPYING.GPLv2
new file mode 100644
index 0000000..d511905
--- /dev/null
+++ b/COPYING.GPLv2
@@ -0,0 +1,339 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
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diff --git a/COPYING.GPLv3 b/COPYING.GPLv3
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/COPYING.GPLv3
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
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diff --git a/COPYING.LGPLv2.1 b/COPYING.LGPLv2.1
new file mode 100644
index 0000000..5ab7695
--- /dev/null
+++ b/COPYING.LGPLv2.1
@@ -0,0 +1,504 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
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+That's all there is to it!
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+
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..c6de9ba
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,2 @@
+See the commit log in the git repository:
+git://ctrl.tukaani.org/lzma-utils.git
diff --git a/Doxyfile.in b/Doxyfile.in
new file mode 100644
index 0000000..8ca611b
--- /dev/null
+++ b/Doxyfile.in
@@ -0,0 +1,1229 @@
+# Doxyfile 1.4.7
+
+# This file describes the settings to be used by the documentation system
+# doxygen (www.doxygen.org) for a project
+#
+# All text after a hash (#) is considered a comment and will be ignored
+# The format is:
+# TAG = value [value, ...]
+# For lists items can also be appended using:
+# TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (" ")
+
+#---------------------------------------------------------------------------
+# Project related configuration options
+#---------------------------------------------------------------------------
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded
+# by quotes) that should identify the project.
+
+PROJECT_NAME = "@PACKAGE_NAME@"
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number.
+# This could be handy for archiving the generated documentation or
+# if some version control system is used.
+
+PROJECT_NUMBER = "@PACKAGE_VERSION@"
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
+# base path where the generated documentation will be put.
+# If a relative path is entered, it will be relative to the location
+# where doxygen was started. If left blank the current directory will be used.
+
+OUTPUT_DIRECTORY = doc
+
+# If the CREATE_SUBDIRS tag is set to YES, then doxygen will create
+# 4096 sub-directories (in 2 levels) under the output directory of each output
+# format and will distribute the generated files over these directories.
+# Enabling this option can be useful when feeding doxygen a huge amount of
+# source files, where putting all generated files in the same directory would
+# otherwise cause performance problems for the file system.
+
+CREATE_SUBDIRS = NO
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all
+# documentation generated by doxygen is written. Doxygen will use this
+# information to generate all constant output in the proper language.
+# The default language is English, other supported languages are:
+# Brazilian, Catalan, Chinese, Chinese-Traditional, Croatian, Czech, Danish,
+# Dutch, Finnish, French, German, Greek, Hungarian, Italian, Japanese,
+# Japanese-en (Japanese with English messages), Korean, Korean-en, Norwegian,
+# Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovene, Spanish,
+# Swedish, and Ukrainian.
+
+OUTPUT_LANGUAGE = English
+
+# This tag can be used to specify the encoding used in the generated output.
+# The encoding is not always determined by the language that is chosen,
+# but also whether or not the output is meant for Windows or non-Windows users.
+# In case there is a difference, setting the USE_WINDOWS_ENCODING tag to YES
+# forces the Windows encoding (this is the default for the Windows binary),
+# whereas setting the tag to NO uses a Unix-style encoding (the default for
+# all platforms other than Windows).
+
+USE_WINDOWS_ENCODING = NO
+
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will
+# include brief member descriptions after the members that are listed in
+# the file and class documentation (similar to JavaDoc).
+# Set to NO to disable this.
+
+BRIEF_MEMBER_DESC = YES
+
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend
+# the brief description of a member or function before the detailed description.
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the
+# brief descriptions will be completely suppressed.
+
+REPEAT_BRIEF = YES
+
+# This tag implements a quasi-intelligent brief description abbreviator
+# that is used to form the text in various listings. Each string
+# in this list, if found as the leading text of the brief description, will be
+# stripped from the text and the result after processing the whole list, is
+# used as the annotated text. Otherwise, the brief description is used as-is.
+# If left blank, the following values are used ("$name" is automatically
+# replaced with the name of the entity): "The $name class" "The $name widget"
+# "The $name file" "is" "provides" "specifies" "contains"
+# "represents" "a" "an" "the"
+
+ABBREVIATE_BRIEF =
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then
+# Doxygen will generate a detailed section even if there is only a brief
+# description.
+
+ALWAYS_DETAILED_SEC = YES
+
+# If the INLINE_INHERITED_MEMB tag is set to YES, doxygen will show all
+# inherited members of a class in the documentation of that class as if those
+# members were ordinary class members. Constructors, destructors and assignment
+# operators of the base classes will not be shown.
+
+INLINE_INHERITED_MEMB = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full
+# path before files name in the file list and in the header files. If set
+# to NO the shortest path that makes the file name unique will be used.
+
+FULL_PATH_NAMES = YES
+
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag
+# can be used to strip a user-defined part of the path. Stripping is
+# only done if one of the specified strings matches the left-hand part of
+# the path. The tag can be used to show relative paths in the file list.
+# If left blank the directory from which doxygen is run is used as the
+# path to strip.
+
+STRIP_FROM_PATH =
+
+# The STRIP_FROM_INC_PATH tag can be used to strip a user-defined part of
+# the path mentioned in the documentation of a class, which tells
+# the reader which header file to include in order to use a class.
+# If left blank only the name of the header file containing the class
+# definition is used. Otherwise one should specify the include paths that
+# are normally passed to the compiler using the -I flag.
+
+STRIP_FROM_INC_PATH =
+
+# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter
+# (but less readable) file names. This can be useful is your file systems
+# doesn't support long names like on DOS, Mac, or CD-ROM.
+
+SHORT_NAMES = NO
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen
+# will interpret the first line (until the first dot) of a JavaDoc-style
+# comment as the brief description. If set to NO, the JavaDoc
+# comments will behave just like the Qt-style comments (thus requiring an
+# explicit @brief command for a brief description.
+
+JAVADOC_AUTOBRIEF = NO
+
+# The MULTILINE_CPP_IS_BRIEF tag can be set to YES to make Doxygen
+# treat a multi-line C++ special comment block (i.e. a block of //! or ///
+# comments) as a brief description. This used to be the default behaviour.
+# The new default is to treat a multi-line C++ comment block as a detailed
+# description. Set this tag to YES if you prefer the old behaviour instead.
+
+MULTILINE_CPP_IS_BRIEF = NO
+
+# If the DETAILS_AT_TOP tag is set to YES then Doxygen
+# will output the detailed description near the top, like JavaDoc.
+# If set to NO, the detailed description appears after the member
+# documentation.
+
+DETAILS_AT_TOP = NO
+
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented
+# member inherits the documentation from any documented member that it
+# re-implements.
+
+INHERIT_DOCS = YES
+
+# If the SEPARATE_MEMBER_PAGES tag is set to YES, then doxygen will produce
+# a new page for each member. If set to NO, the documentation of a member will
+# be part of the file/class/namespace that contains it.
+
+SEPARATE_MEMBER_PAGES = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab.
+# Doxygen uses this value to replace tabs by spaces in code fragments.
+
+TAB_SIZE = 8
+
+# This tag can be used to specify a number of aliases that acts
+# as commands in the documentation. An alias has the form "name=value".
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to
+# put the command \sideeffect (or @sideeffect) in the documentation, which
+# will result in a user-defined paragraph with heading "Side Effects:".
+# You can put \n's in the value part of an alias to insert newlines.
+
+ALIASES =
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C
+# sources only. Doxygen will then generate output that is more tailored for C.
+# For instance, some of the names that are used will be different. The list
+# of all members will be omitted, etc.
+
+OPTIMIZE_OUTPUT_FOR_C = YES
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC
+# tag is set to YES, then doxygen will reuse the documentation of the first
+# member in the group (if any) for the other members of the group. By default
+# all members of a group must be documented explicitly.
+
+DISTRIBUTE_GROUP_DOC = NO
+
+# Set the SUBGROUPING tag to YES (the default) to allow class member groups of
+# the same type (for instance a group of public functions) to be put as a
+# subgroup of that type (e.g. under the Public Functions section). Set it to
+# NO to prevent subgrouping. Alternatively, this can be done per class using
+# the \nosubgrouping command.
+
+SUBGROUPING = YES
+
+#---------------------------------------------------------------------------
+# Build related configuration options
+#---------------------------------------------------------------------------
+
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in
+# documentation are documented, even if no documentation was available.
+# Private class members and static file members will be hidden unless
+# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES
+
+EXTRACT_ALL = NO
+
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class
+# will be included in the documentation.
+
+EXTRACT_PRIVATE = YES
+
+# If the EXTRACT_STATIC tag is set to YES all static members of a file
+# will be included in the documentation.
+
+EXTRACT_STATIC = YES
+
+# If the EXTRACT_LOCAL_CLASSES tag is set to YES classes (and structs)
+# defined locally in source files will be included in the documentation.
+# If set to NO only classes defined in header files are included.
+
+EXTRACT_LOCAL_CLASSES = YES
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all
+# undocumented members of documented classes, files or namespaces.
+# If set to NO (the default) these members will be included in the
+# various overviews, but no documentation section is generated.
+# This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_MEMBERS = NO
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all
+# undocumented classes that are normally visible in the class hierarchy.
+# If set to NO (the default) these classes will be included in the various
+# overviews. This option has no effect if EXTRACT_ALL is enabled.
+
+HIDE_UNDOC_CLASSES = NO
+
+# If the HIDE_FRIEND_COMPOUNDS tag is set to YES, Doxygen will hide all
+# friend (class|struct|union) declarations.
+# If set to NO (the default) these declarations will be included in the
+# documentation.
+
+HIDE_FRIEND_COMPOUNDS = NO
+
+# If the HIDE_IN_BODY_DOCS tag is set to YES, Doxygen will hide any
+# documentation blocks found inside the body of a function.
+# If set to NO (the default) these blocks will be appended to the
+# function's detailed documentation block.
+
+HIDE_IN_BODY_DOCS = NO
+
+# The INTERNAL_DOCS tag determines if documentation
+# that is typed after a \internal command is included. If the tag is set
+# to NO (the default) then the documentation will be excluded.
+# Set it to YES to include the internal documentation.
+
+INTERNAL_DOCS = NO
+
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate
+# file names in lower-case letters. If set to YES upper-case letters are also
+# allowed. This is useful if you have classes or files whose names only differ
+# in case and if your file system supports case sensitive file names. Windows
+# and Mac users are advised to set this option to NO.
+
+CASE_SENSE_NAMES = YES
+
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen
+# will show members with their full class and namespace scopes in the
+# documentation. If set to YES the scope will be hidden.
+
+HIDE_SCOPE_NAMES = NO
+
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen
+# will put a list of the files that are included by a file in the documentation
+# of that file.
+
+SHOW_INCLUDE_FILES = YES
+
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline]
+# is inserted in the documentation for inline members.
+
+INLINE_INFO = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen
+# will sort the (detailed) documentation of file and class members
+# alphabetically by member name. If set to NO the members will appear in
+# declaration order.
+
+SORT_MEMBER_DOCS = NO
+
+# If the SORT_BRIEF_DOCS tag is set to YES then doxygen will sort the
+# brief documentation of file, namespace and class members alphabetically
+# by member name. If set to NO (the default) the members will appear in
+# declaration order.
+
+SORT_BRIEF_DOCS = NO
+
+# If the SORT_BY_SCOPE_NAME tag is set to YES, the class list will be
+# sorted by fully-qualified names, including namespaces. If set to
+# NO (the default), the class list will be sorted only by class name,
+# not including the namespace part.
+# Note: This option is not very useful if HIDE_SCOPE_NAMES is set to YES.
+# Note: This option applies only to the class list, not to the
+# alphabetical list.
+
+SORT_BY_SCOPE_NAME = NO
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or
+# disable (NO) the todo list. This list is created by putting \todo
+# commands in the documentation.
+
+GENERATE_TODOLIST = YES
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or
+# disable (NO) the test list. This list is created by putting \test
+# commands in the documentation.
+
+GENERATE_TESTLIST = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or
+# disable (NO) the bug list. This list is created by putting \bug
+# commands in the documentation.
+
+GENERATE_BUGLIST = YES
+
+# The GENERATE_DEPRECATEDLIST tag can be used to enable (YES) or
+# disable (NO) the deprecated list. This list is created by putting
+# \deprecated commands in the documentation.
+
+GENERATE_DEPRECATEDLIST= YES
+
+# The ENABLED_SECTIONS tag can be used to enable conditional
+# documentation sections, marked by \if sectionname ... \endif.
+
+ENABLED_SECTIONS =
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines
+# the initial value of a variable or define consists of for it to appear in
+# the documentation. If the initializer consists of more lines than specified
+# here it will be hidden. Use a value of 0 to hide initializers completely.
+# The appearance of the initializer of individual variables and defines in the
+# documentation can be controlled using \showinitializer or \hideinitializer
+# command in the documentation regardless of this setting.
+
+MAX_INITIALIZER_LINES = 30
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated
+# at the bottom of the documentation of classes and structs. If set to YES the
+# list will mention the files that were used to generate the documentation.
+
+SHOW_USED_FILES = YES
+
+# If the sources in your project are distributed over multiple directories
+# then setting the SHOW_DIRECTORIES tag to YES will show the directory hierarchy
+# in the documentation. The default is NO.
+
+SHOW_DIRECTORIES = NO
+
+# The FILE_VERSION_FILTER tag can be used to specify a program or script that
+# doxygen should invoke to get the current version for each file (typically from the
+# version control system). Doxygen will invoke the program by executing (via
+# popen()) the command <command> <input-file>, where <command> is the value of
+# the FILE_VERSION_FILTER tag, and <input-file> is the name of an input file
+# provided by doxygen. Whatever the program writes to standard output
+# is used as the file version. See the manual for examples.
+
+FILE_VERSION_FILTER =
+
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated
+# by doxygen. Possible values are YES and NO. If left blank NO is used.
+
+QUIET = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are
+# generated by doxygen. Possible values are YES and NO. If left blank
+# NO is used.
+
+WARNINGS = YES
+
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will
+# automatically be disabled.
+
+WARN_IF_UNDOCUMENTED = YES
+
+# If WARN_IF_DOC_ERROR is set to YES, doxygen will generate warnings for
+# potential errors in the documentation, such as not documenting some
+# parameters in a documented function, or documenting parameters that
+# don't exist or using markup commands wrongly.
+
+WARN_IF_DOC_ERROR = YES
+
+# This WARN_NO_PARAMDOC option can be abled to get warnings for
+# functions that are documented, but have no documentation for their parameters
+# or return value. If set to NO (the default) doxygen will only warn about
+# wrong or incomplete parameter documentation, but not about the absence of
+# documentation.
+
+WARN_NO_PARAMDOC = NO
+
+# The WARN_FORMAT tag determines the format of the warning messages that
+# doxygen can produce. The string should contain the $file, $line, and $text
+# tags, which will be replaced by the file and line number from which the
+# warning originated and the warning text. Optionally the format may contain
+# $version, which will be replaced by the version of the file (if it could
+# be obtained via FILE_VERSION_FILTER)
+
+WARN_FORMAT = "$file:$line: $text"
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning
+# and error messages should be written. If left blank the output is written
+# to stderr.
+
+WARN_LOGFILE =
+
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag can be used to specify the files and/or directories that contain
+# documented source files. You may enter file names like "myfile.cpp" or
+# directories like "/usr/src/myproject". Separate the files or directories
+# with spaces.
+
+INPUT = @top_srcdir@/src
+
+# If the value of the INPUT tag contains directories, you can use the
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank the following patterns are tested:
+# *.c *.cc *.cxx *.cpp *.c++ *.java *.ii *.ixx *.ipp *.i++ *.inl *.h *.hh *.hxx
+# *.hpp *.h++ *.idl *.odl *.cs *.php *.php3 *.inc *.m *.mm *.py
+
+FILE_PATTERNS = *.h *.c
+
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories
+# should be searched for input files as well. Possible values are YES and NO.
+# If left blank NO is used.
+
+RECURSIVE = YES
+
+# The EXCLUDE tag can be used to specify files and/or directories that should
+# excluded from the INPUT source files. This way you can easily exclude a
+# subdirectory from a directory tree whose root is specified with the INPUT tag.
+
+EXCLUDE =
+
+# The EXCLUDE_SYMLINKS tag can be used select whether or not files or
+# directories that are symbolic links (a Unix filesystem feature) are excluded
+# from the input.
+
+EXCLUDE_SYMLINKS = YES
+
+# If the value of the INPUT tag contains directories, you can use the
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude
+# certain files from those directories. Note that the wildcards are matched
+# against the file with absolute path, so to exclude all test directories
+# for example use the pattern */test/*
+
+EXCLUDE_PATTERNS =
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or
+# directories that contain example code fragments that are included (see
+# the \include command).
+
+EXAMPLE_PATH =
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
+# and *.h) to filter out the source-files in the directories. If left
+# blank all files are included.
+
+EXAMPLE_PATTERNS =
+
+# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
+# searched for input files to be used with the \include or \dontinclude
+# commands irrespective of the value of the RECURSIVE tag.
+# Possible values are YES and NO. If left blank NO is used.
+
+EXAMPLE_RECURSIVE = NO
+
+# The IMAGE_PATH tag can be used to specify one or more files or
+# directories that contain image that are included in the documentation (see
+# the \image command).
+
+IMAGE_PATH =
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should
+# invoke to filter for each input file. Doxygen will invoke the filter program
+# by executing (via popen()) the command <filter> <input-file>, where <filter>
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an
+# input file. Doxygen will then use the output that the filter program writes
+# to standard output. If FILTER_PATTERNS is specified, this tag will be
+# ignored.
+
+INPUT_FILTER =
+
+# The FILTER_PATTERNS tag can be used to specify filters on a per file pattern
+# basis. Doxygen will compare the file name with each pattern and apply the
+# filter if there is a match. The filters are a list of the form:
+# pattern=filter (like *.cpp=my_cpp_filter). See INPUT_FILTER for further
+# info on how filters are used. If FILTER_PATTERNS is empty, INPUT_FILTER
+# is applied to all files.
+
+FILTER_PATTERNS =
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using
+# INPUT_FILTER) will be used to filter the input files when producing source
+# files to browse (i.e. when SOURCE_BROWSER is set to YES).
+
+FILTER_SOURCE_FILES = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to source browsing
+#---------------------------------------------------------------------------
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will
+# be generated. Documented entities will be cross-referenced with these sources.
+# Note: To get rid of all source code in the generated output, make sure also
+# VERBATIM_HEADERS is set to NO.
+
+SOURCE_BROWSER = NO
+
+# Setting the INLINE_SOURCES tag to YES will include the body
+# of functions and classes directly in the documentation.
+
+INLINE_SOURCES = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct
+# doxygen to hide any special comment blocks from generated source code
+# fragments. Normal C and C++ comments will always remain visible.
+
+STRIP_CODE_COMMENTS = YES
+
+# If the REFERENCED_BY_RELATION tag is set to YES (the default)
+# then for each documented function all documented
+# functions referencing it will be listed.
+
+REFERENCED_BY_RELATION = YES
+
+# If the REFERENCES_RELATION tag is set to YES (the default)
+# then for each documented function all documented entities
+# called/used by that function will be listed.
+
+REFERENCES_RELATION = YES
+
+# If the REFERENCES_LINK_SOURCE tag is set to YES (the default)
+# and SOURCE_BROWSER tag is set to YES, then the hyperlinks from
+# functions in REFERENCES_RELATION and REFERENCED_BY_RELATION lists will
+# link to the source code. Otherwise they will link to the documentstion.
+
+REFERENCES_LINK_SOURCE = YES
+
+# If the USE_HTAGS tag is set to YES then the references to source code
+# will point to the HTML generated by the htags(1) tool instead of doxygen
+# built-in source browser. The htags tool is part of GNU's global source
+# tagging system (see http://www.gnu.org/software/global/global.html). You
+# will need version 4.8.6 or higher.
+
+USE_HTAGS = NO
+
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen
+# will generate a verbatim copy of the header file for each class for
+# which an include is specified. Set to NO to disable this.
+
+VERBATIM_HEADERS = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index
+# of all compounds will be generated. Enable this if the project
+# contains a lot of classes, structs, unions or interfaces.
+
+ALPHABETICAL_INDEX = NO
+
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns
+# in which this list will be split (can be a number in the range [1..20])
+
+COLS_IN_ALPHA_INDEX = 5
+
+# In case all classes in a project start with a common prefix, all
+# classes will be put under the same header in the alphabetical index.
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that
+# should be ignored while generating the index headers.
+
+IGNORE_PREFIX =
+
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will
+# generate HTML output.
+
+GENERATE_HTML = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `html' will be used as the default path.
+
+HTML_OUTPUT = html
+
+# The HTML_FILE_EXTENSION tag can be used to specify the file extension for
+# each generated HTML page (for example: .htm,.php,.asp). If it is left blank
+# doxygen will generate files with .html extension.
+
+HTML_FILE_EXTENSION = .html
+
+# The HTML_HEADER tag can be used to specify a personal HTML header for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard header.
+
+HTML_HEADER =
+
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for
+# each generated HTML page. If it is left blank doxygen will generate a
+# standard footer.
+
+HTML_FOOTER =
+
+# The HTML_STYLESHEET tag can be used to specify a user-defined cascading
+# style sheet that is used by each HTML page. It can be used to
+# fine-tune the look of the HTML output. If the tag is left blank doxygen
+# will generate a default style sheet. Note that doxygen will try to copy
+# the style sheet file to the HTML output directory, so don't put your own
+# stylesheet in the HTML output directory as well, or it will be erased!
+
+HTML_STYLESHEET =
+
+# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes,
+# files or namespaces will be aligned in HTML using tables. If set to
+# NO a bullet list will be used.
+
+HTML_ALIGN_MEMBERS = YES
+
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files
+# will be generated that can be used as input for tools like the
+# Microsoft HTML help workshop to generate a compressed HTML help file (.chm)
+# of the generated HTML documentation.
+
+GENERATE_HTMLHELP = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the CHM_FILE tag can
+# be used to specify the file name of the resulting .chm file. You
+# can add a path in front of the file if the result should not be
+# written to the html output directory.
+
+CHM_FILE =
+
+# If the GENERATE_HTMLHELP tag is set to YES, the HHC_LOCATION tag can
+# be used to specify the location (absolute path including file name) of
+# the HTML help compiler (hhc.exe). If non-empty doxygen will try to run
+# the HTML help compiler on the generated index.hhp.
+
+HHC_LOCATION =
+
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag
+# controls if a separate .chi index file is generated (YES) or that
+# it should be included in the master .chm file (NO).
+
+GENERATE_CHI = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag
+# controls whether a binary table of contents is generated (YES) or a
+# normal table of contents (NO) in the .chm file.
+
+BINARY_TOC = NO
+
+# The TOC_EXPAND flag can be set to YES to add extra items for group members
+# to the contents of the HTML help documentation and to the tree view.
+
+TOC_EXPAND = NO
+
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index at
+# top of each HTML page. The value NO (the default) enables the index and
+# the value YES disables it.
+
+DISABLE_INDEX = NO
+
+# This tag can be used to set the number of enum values (range [1..20])
+# that doxygen will group on one line in the generated HTML documentation.
+
+ENUM_VALUES_PER_LINE = 4
+
+# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be
+# generated containing a tree-like index structure (just like the one that
+# is generated for HTML Help). For this to work a browser that supports
+# JavaScript, DHTML, CSS and frames is required (for instance Mozilla 1.0+,
+# Netscape 6.0+, Internet explorer 5.0+, or Konqueror). Windows users are
+# probably better off using the HTML help feature.
+
+GENERATE_TREEVIEW = NO
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be
+# used to set the initial width (in pixels) of the frame in which the tree
+# is shown.
+
+TREEVIEW_WIDTH = 250
+
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will
+# generate Latex output.
+
+GENERATE_LATEX = YES
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `latex' will be used as the default path.
+
+LATEX_OUTPUT = latex
+
+# The LATEX_CMD_NAME tag can be used to specify the LaTeX command name to be
+# invoked. If left blank `latex' will be used as the default command name.
+
+LATEX_CMD_NAME = latex
+
+# The MAKEINDEX_CMD_NAME tag can be used to specify the command name to
+# generate index for LaTeX. If left blank `makeindex' will be used as the
+# default command name.
+
+MAKEINDEX_CMD_NAME = makeindex
+
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact
+# LaTeX documents. This may be useful for small projects and may help to
+# save some trees in general.
+
+COMPACT_LATEX = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used
+# by the printer. Possible values are: a4, a4wide, letter, legal and
+# executive. If left blank a4wide will be used.
+
+PAPER_TYPE = a4wide
+
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX
+# packages that should be included in the LaTeX output.
+
+EXTRA_PACKAGES =
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for
+# the generated latex document. The header should contain everything until
+# the first chapter. If it is left blank doxygen will generate a
+# standard header. Notice: only use this tag if you know what you are doing!
+
+LATEX_HEADER =
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will
+# contain links (just like the HTML output) instead of page references
+# This makes the output suitable for online browsing using a pdf viewer.
+
+PDF_HYPERLINKS = NO
+
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of
+# plain latex in the generated Makefile. Set this option to YES to get a
+# higher quality PDF documentation.
+
+USE_PDFLATEX = YES
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode.
+# command to the generated LaTeX files. This will instruct LaTeX to keep
+# running if errors occur, instead of asking the user for help.
+# This option is also used when generating formulas in HTML.
+
+LATEX_BATCHMODE = NO
+
+# If LATEX_HIDE_INDICES is set to YES then doxygen will not
+# include the index chapters (such as File Index, Compound Index, etc.)
+# in the output.
+
+LATEX_HIDE_INDICES = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output
+# The RTF output is optimized for Word 97 and may not look very pretty with
+# other RTF readers or editors.
+
+GENERATE_RTF = NO
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `rtf' will be used as the default path.
+
+RTF_OUTPUT = rtf
+
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact
+# RTF documents. This may be useful for small projects and may help to
+# save some trees in general.
+
+COMPACT_RTF = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated
+# will contain hyperlink fields. The RTF file will
+# contain links (just like the HTML output) instead of page references.
+# This makes the output suitable for online browsing using WORD or other
+# programs which support those fields.
+# Note: wordpad (write) and others do not support links.
+
+RTF_HYPERLINKS = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's
+# config file, i.e. a series of assignments. You only have to provide
+# replacements, missing definitions are set to their default value.
+
+RTF_STYLESHEET_FILE =
+
+# Set optional variables used in the generation of an rtf document.
+# Syntax is similar to doxygen's config file.
+
+RTF_EXTENSIONS_FILE =
+
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will
+# generate man pages
+
+GENERATE_MAN = NO
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `man' will be used as the default path.
+
+MAN_OUTPUT = man
+
+# The MAN_EXTENSION tag determines the extension that is added to
+# the generated man pages (default is the subroutine's section .3)
+
+MAN_EXTENSION = .3
+
+# If the MAN_LINKS tag is set to YES and Doxygen generates man output,
+# then it will generate one additional man file for each entity
+# documented in the real man page(s). These additional files
+# only source the real man page, but without them the man command
+# would be unable to find the correct page. The default is NO.
+
+MAN_LINKS = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the XML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_XML tag is set to YES Doxygen will
+# generate an XML file that captures the structure of
+# the code including all documentation.
+
+GENERATE_XML = NO
+
+# The XML_OUTPUT tag is used to specify where the XML pages will be put.
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be
+# put in front of it. If left blank `xml' will be used as the default path.
+
+XML_OUTPUT = xml
+
+# The XML_SCHEMA tag can be used to specify an XML schema,
+# which can be used by a validating XML parser to check the
+# syntax of the XML files.
+
+XML_SCHEMA =
+
+# The XML_DTD tag can be used to specify an XML DTD,
+# which can be used by a validating XML parser to check the
+# syntax of the XML files.
+
+XML_DTD =
+
+# If the XML_PROGRAMLISTING tag is set to YES Doxygen will
+# dump the program listings (including syntax highlighting
+# and cross-referencing information) to the XML output. Note that
+# enabling this will significantly increase the size of the XML output.
+
+XML_PROGRAMLISTING = YES
+
+#---------------------------------------------------------------------------
+# configuration options for the AutoGen Definitions output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_AUTOGEN_DEF tag is set to YES Doxygen will
+# generate an AutoGen Definitions (see autogen.sf.net) file
+# that captures the structure of the code including all
+# documentation. Note that this feature is still experimental
+# and incomplete at the moment.
+
+GENERATE_AUTOGEN_DEF = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the Perl module output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_PERLMOD tag is set to YES Doxygen will
+# generate a Perl module file that captures the structure of
+# the code including all documentation. Note that this
+# feature is still experimental and incomplete at the
+# moment.
+
+GENERATE_PERLMOD = NO
+
+# If the PERLMOD_LATEX tag is set to YES Doxygen will generate
+# the necessary Makefile rules, Perl scripts and LaTeX code to be able
+# to generate PDF and DVI output from the Perl module output.
+
+PERLMOD_LATEX = NO
+
+# If the PERLMOD_PRETTY tag is set to YES the Perl module output will be
+# nicely formatted so it can be parsed by a human reader. This is useful
+# if you want to understand what is going on. On the other hand, if this
+# tag is set to NO the size of the Perl module output will be much smaller
+# and Perl will parse it just the same.
+
+PERLMOD_PRETTY = YES
+
+# The names of the make variables in the generated doxyrules.make file
+# are prefixed with the string contained in PERLMOD_MAKEVAR_PREFIX.
+# This is useful so different doxyrules.make files included by the same
+# Makefile don't overwrite each other's variables.
+
+PERLMOD_MAKEVAR_PREFIX =
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will
+# evaluate all C-preprocessor directives found in the sources and include
+# files.
+
+ENABLE_PREPROCESSING = YES
+
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro
+# names in the source code. If set to NO (the default) only conditional
+# compilation will be performed. Macro expansion can be done in a controlled
+# way by setting EXPAND_ONLY_PREDEF to YES.
+
+MACRO_EXPANSION = NO
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES
+# then the macro expansion is limited to the macros specified with the
+# PREDEFINED and EXPAND_AS_DEFINED tags.
+
+EXPAND_ONLY_PREDEF = NO
+
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files
+# in the INCLUDE_PATH (see below) will be search if a #include is found.
+
+SEARCH_INCLUDES = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that
+# contain include files that are not input files but should be processed by
+# the preprocessor.
+
+INCLUDE_PATH =
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard
+# patterns (like *.h and *.hpp) to filter out the header-files in the
+# directories. If left blank, the patterns specified with FILE_PATTERNS will
+# be used.
+
+INCLUDE_FILE_PATTERNS =
+
+# The PREDEFINED tag can be used to specify one or more macro names that
+# are defined before the preprocessor is started (similar to the -D option of
+# gcc). The argument of the tag is a list of macros of the form: name
+# or name=definition (no spaces). If the definition and the = are
+# omitted =1 is assumed. To prevent a macro definition from being
+# undefined via #undef or recursively expanded use the := operator
+# instead of the = operator.
+
+PREDEFINED =
+
+# If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then
+# this tag can be used to specify a list of macro names that should be expanded.
+# The macro definition that is found in the sources will be used.
+# Use the PREDEFINED tag if you want to use a different macro definition.
+
+EXPAND_AS_DEFINED =
+
+# If the SKIP_FUNCTION_MACROS tag is set to YES (the default) then
+# doxygen's preprocessor will remove all function-like macros that are alone
+# on a line, have an all uppercase name, and do not end with a semicolon. Such
+# function macros are typically used for boiler-plate code, and will confuse
+# the parser if not removed.
+
+SKIP_FUNCTION_MACROS = YES
+
+#---------------------------------------------------------------------------
+# Configuration::additions related to external references
+#---------------------------------------------------------------------------
+
+# The TAGFILES option can be used to specify one or more tagfiles.
+# Optionally an initial location of the external documentation
+# can be added for each tagfile. The format of a tag file without
+# this location is as follows:
+# TAGFILES = file1 file2 ...
+# Adding location for the tag files is done as follows:
+# TAGFILES = file1=loc1 "file2 = loc2" ...
+# where "loc1" and "loc2" can be relative or absolute paths or
+# URLs. If a location is present for each tag, the installdox tool
+# does not have to be run to correct the links.
+# Note that each tag file must have a unique name
+# (where the name does NOT include the path)
+# If a tag file is not located in the directory in which doxygen
+# is run, you must also specify the path to the tagfile here.
+
+TAGFILES =
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create
+# a tag file that is based on the input files it reads.
+
+GENERATE_TAGFILE =
+
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed
+# in the class index. If set to NO only the inherited external classes
+# will be listed.
+
+ALLEXTERNALS = NO
+
+# If the EXTERNAL_GROUPS tag is set to YES all external groups will be listed
+# in the modules index. If set to NO, only the current project's groups will
+# be listed.
+
+EXTERNAL_GROUPS = YES
+
+# The PERL_PATH should be the absolute path and name of the perl script
+# interpreter (i.e. the result of `which perl').
+
+PERL_PATH = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool
+#---------------------------------------------------------------------------
+
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will
+# generate a inheritance diagram (in HTML, RTF and LaTeX) for classes with base
+# or super classes. Setting the tag to NO turns the diagrams off. Note that
+# this option is superseded by the HAVE_DOT option below. This is only a
+# fallback. It is recommended to install and use dot, since it yields more
+# powerful graphs.
+
+CLASS_DIAGRAMS = YES
+
+# If set to YES, the inheritance and collaboration graphs will hide
+# inheritance and usage relations if the target is undocumented
+# or is not a class.
+
+HIDE_UNDOC_RELATIONS = YES
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is
+# available from the path. This tool is part of Graphviz, a graph visualization
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section
+# have no effect if this option is set to NO (the default)
+
+HAVE_DOT = NO
+
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect inheritance relations. Setting this tag to YES will force the
+# the CLASS_DIAGRAMS tag to NO.
+
+CLASS_GRAPH = YES
+
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for each documented class showing the direct and
+# indirect implementation dependencies (inheritance, containment, and
+# class references variables) of the class with other documented classes.
+
+COLLABORATION_GRAPH = YES
+
+# If the GROUP_GRAPHS and HAVE_DOT tags are set to YES then doxygen
+# will generate a graph for groups, showing the direct groups dependencies
+
+GROUP_GRAPHS = YES
+
+# If the UML_LOOK tag is set to YES doxygen will generate inheritance and
+# collaboration diagrams in a style similar to the OMG's Unified Modeling
+# Language.
+
+UML_LOOK = NO
+
+# If set to YES, the inheritance and collaboration graphs will show the
+# relations between templates and their instances.
+
+TEMPLATE_RELATIONS = NO
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDE_GRAPH, and HAVE_DOT
+# tags are set to YES then doxygen will generate a graph for each documented
+# file showing the direct and indirect include dependencies of the file with
+# other documented files.
+
+INCLUDE_GRAPH = YES
+
+# If the ENABLE_PREPROCESSING, SEARCH_INCLUDES, INCLUDED_BY_GRAPH, and
+# HAVE_DOT tags are set to YES then doxygen will generate a graph for each
+# documented header file showing the documented files that directly or
+# indirectly include this file.
+
+INCLUDED_BY_GRAPH = YES
+
+# If the CALL_GRAPH and HAVE_DOT tags are set to YES then doxygen will
+# generate a call dependency graph for every global function or class method.
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable call graphs for selected
+# functions only using the \callgraph command.
+
+CALL_GRAPH = NO
+
+# If the CALLER_GRAPH and HAVE_DOT tags are set to YES then doxygen will
+# generate a caller dependency graph for every global function or class method.
+# Note that enabling this option will significantly increase the time of a run.
+# So in most cases it will be better to enable caller graphs for selected
+# functions only using the \callergraph command.
+
+CALLER_GRAPH = NO
+
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen
+# will graphical hierarchy of all classes instead of a textual one.
+
+GRAPHICAL_HIERARCHY = YES
+
+# If the DIRECTORY_GRAPH, SHOW_DIRECTORIES and HAVE_DOT tags are set to YES
+# then doxygen will show the dependencies a directory has on other directories
+# in a graphical way. The dependency relations are determined by the #include
+# relations between the files in the directories.
+
+DIRECTORY_GRAPH = YES
+
+# The DOT_IMAGE_FORMAT tag can be used to set the image format of the images
+# generated by dot. Possible values are png, jpg, or gif
+# If left blank png will be used.
+
+DOT_IMAGE_FORMAT = png
+
+# The tag DOT_PATH can be used to specify the path where the dot tool can be
+# found. If left blank, it is assumed the dot tool can be found in the path.
+
+DOT_PATH =
+
+# The DOTFILE_DIRS tag can be used to specify one or more directories that
+# contain dot files that are included in the documentation (see the
+# \dotfile command).
+
+DOTFILE_DIRS =
+
+# The MAX_DOT_GRAPH_WIDTH tag can be used to set the maximum allowed width
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than
+# this value, doxygen will try to truncate the graph, so that it fits within
+# the specified constraint. Beware that most browsers cannot cope with very
+# large images.
+
+MAX_DOT_GRAPH_WIDTH = 1024
+
+# The MAX_DOT_GRAPH_HEIGHT tag can be used to set the maximum allows height
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than
+# this value, doxygen will try to truncate the graph, so that it fits within
+# the specified constraint. Beware that most browsers cannot cope with very
+# large images.
+
+MAX_DOT_GRAPH_HEIGHT = 1024
+
+# The MAX_DOT_GRAPH_DEPTH tag can be used to set the maximum depth of the
+# graphs generated by dot. A depth value of 3 means that only nodes reachable
+# from the root by following a path via at most 3 edges will be shown. Nodes
+# that lay further from the root node will be omitted. Note that setting this
+# option to 1 or 2 may greatly reduce the computation time needed for large
+# code bases. Also note that a graph may be further truncated if the graph's
+# image dimensions are not sufficient to fit the graph (see MAX_DOT_GRAPH_WIDTH
+# and MAX_DOT_GRAPH_HEIGHT). If 0 is used for the depth value (the default),
+# the graph is not depth-constrained.
+
+MAX_DOT_GRAPH_DEPTH = 0
+
+# Set the DOT_TRANSPARENT tag to YES to generate images with a transparent
+# background. This is disabled by default, which results in a white background.
+# Warning: Depending on the platform used, enabling this option may lead to
+# badly anti-aliased labels on the edges of a graph (i.e. they become hard to
+# read).
+
+DOT_TRANSPARENT = NO
+
+# Set the DOT_MULTI_TARGETS tag to YES allow dot to generate multiple output
+# files in one run (i.e. multiple -o and -T options on the command line). This
+# makes dot run faster, but since only newer versions of dot (>1.8.10)
+# support this, this feature is disabled by default.
+
+DOT_MULTI_TARGETS = NO
+
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will
+# generate a legend page explaining the meaning of the various boxes and
+# arrows in the dot generated graphs.
+
+GENERATE_LEGEND = YES
+
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will
+# remove the intermediate dot files that are used to generate
+# the various graphs.
+
+DOT_CLEANUP = YES
+
+#---------------------------------------------------------------------------
+# Configuration::additions related to the search engine
+#---------------------------------------------------------------------------
+
+# The SEARCHENGINE tag specifies whether or not a search engine should be
+# used. If set to NO the values of all tags below this one will be ignored.
+
+SEARCHENGINE = NO
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..df3d07d
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,38 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+SUBDIRS =
+
+if COND_GNULIB
+SUBDIRS += lib
+endif
+
+SUBDIRS += src po tests
+
+
+EXTRA_DIST = \
+ m4 \
+ extra \
+ config.rpath \
+ Doxyfile.in \
+ FAQ \
+ INSTALL.generic \
+ COPYING.GPLv2 \
+ COPYING.GPLv3 \
+ COPYING.LGPLv2.1 \
+ README-liblzma \
+ README-lzma
+
+ACLOCAL_AMFLAGS = -I m4
+AUTOMAKE_OPTIONS = foreign
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/NEWS
diff --git a/README b/README
new file mode 100644
index 0000000..b56331a
--- /dev/null
+++ b/README
@@ -0,0 +1,151 @@
+
+LZMA Utils
+----------
+
+Warning
+
+ This is an early alpha version. Don't trust the files produced by
+ this version of the software - not even if the software can
+ uncompress the files properly! This is because the file format
+ isn't completely frozen yet.
+
+ So please test a lot, but don't use for anything serious yet.
+
+
+Overview
+
+ LZMA is a general purporse compression algorithm designed by
+ Igor Pavlov as part of 7-Zip. It provides high compression ratio
+ while keeping the decompression speed fast.
+
+ LZMA Utils are an attempt to make LZMA compression easy to use
+ on free (as in freedom) operating systems. This is achieved by
+ providing tools and libraries which are similar to use than the
+ equivalents of the most popular existing compression algorithms.
+
+ LZMA Utils consist of a few relatively separate parts:
+ * liblzma is an encoder/decoder library with support for several
+ filters (algorithm implementations). The primary filter is LZMA.
+ * libzfile enables reading from and writing to gzip, bzip2 and
+ LZMA compressed and uncompressed files with an API similar to
+ the standard ANSI-C file I/O.
+ [ NOTE: libzfile is not implemented yet. ]
+ * lzma command line tool has almost identical syntax than gzip
+ and bzip2. It makes LZMA easy for average users, but also
+ provides advanced options to finetune the compression settings.
+ * A few shell scripts make diffing and grepping LZMA compressed
+ files easy. The scripts were adapted from gzip and bzip2.
+
+
+Supported platforms
+
+ LZMA Utils are developed on GNU+Linux, but they should work at
+ least on *BSDs and Solaris. They probably work on some other
+ POSIX-like operating systems too.
+
+ If you use GCC to compile LZMA Utils, you need at least version
+ 3.x.x. GCC version 2.xx.x doesn't support some C99 features used
+ in LZMA Utils source code, thus GCC 2 won't compile LZMA Utils.
+
+ If you have written patches to make LZMA Utils to work on previously
+ unsupported platform, please send the patches to me! I will consider
+ including them to the official version. It's nice to minimize the
+ need of third-party patching.
+
+ One exception: Don't request or send patches to change the whole
+ source package to C89. I find C99 substantially nicer to write and
+ maintain. However, the public library headers must be in C89 to
+ avoid frustrating those who maintain programs, which are strictly
+ in C89 or C++.
+
+
+configure options
+
+ If you are not familiar with `configure' scripts, read the file
+ INSTALL first.
+
+ In most cases, the default --enable/--disable/--with/--without options
+ are what you want. Don't touch them if you are unsure.
+
+ --disable-encoder
+ Do not compile the encoder component of liblzma. This
+ implies --disable-match-finders. If you need only
+ the decoder, you can decrease the library size
+ dramatically with this option.
+
+ The default is to build the encoder.
+
+ --disable-decoder
+ Do not compile the decoder component of liblzma.
+
+ The default is to build the decoder.
+
+ --enable-filters=
+ liblzma supports several filters. See liblzma-intro.txt
+ for a little more information about these.
+
+ The default is to build all the filters.
+
+ --enable-match-finders=
+ liblzma includes two categories of match finders:
+ hash chains and binary trees. Hash chains (hc3 and hc4)
+ are quite fast but they don't provide the best compression
+ ratio. Binary trees (bt2, bt3 and bt4) give excellent
+ compression ratio, but they are slower and need more
+ memory than hash chains.
+
+ You need to enable at least one match finder to build the
+ LZMA filter encoder. Usually hash chains are used only in
+ the fast mode, while binary trees are used to when the best
+ compression ratio is wanted.
+
+ The default is to build all the match finders.
+
+ --enable-checks=
+ liblzma support multiple integrity checks. CRC32 is
+ mandatory, and cannot be omitted. See liblzma-intro.txt
+ for more information about usage of the integrity checks.
+
+ --disable-assembler
+ liblzma includes some assembler optimizations. Currently
+ there is only assembler code for CRC32 and CRC64 for
+ 32-bit x86.
+
+ All the assembler code in liblzma is position-independent
+ code, which is suitable for use in shared libraries and
+ position-independent executables.
+
+ --enable-small
+ Omits precomputed tables. This makes liblzma a few KiB
+ smaller. Startup time increases, because the tables need
+ to be computed first.
+
+ --enable-debug
+ This enables the assert() macro and possibly some other
+ run-time consistency checks. It slows down things somewhat,
+ so you normally don't want to have this enabled.
+
+ --enable-werror
+ Makes all compiler warnings an error, that abort the
+ compilation. This may help catching bugs, and should work
+ on most systems. This has no effect on the resulting
+ binaries.
+
+
+Static vs. dynamic linking of the command line tools
+
+ By default, the command line tools are linked statically against
+ liblzma. There a are a few reasons:
+
+ - The executable(s) can be in /bin while the shared liblzma can still
+ be in /usr/lib (if the distro uses such file system hierachy).
+
+ - It's easier to copy the executables to other systems, since they
+ depend only on libc.
+
+ - It's slightly faster on some architectures like x86.
+
+ If you don't like this, you can get the command line tools linked
+ against the shared liblzma by specifying --disable-static to configure.
+ This disables building static liblzma completely.
+
diff --git a/THANKS b/THANKS
new file mode 100644
index 0000000..56e18dc
--- /dev/null
+++ b/THANKS
@@ -0,0 +1,23 @@
+
+Thanks
+------
+
+Some people have helped more, some less, some don't even know they have
+been helpful, but nevertheless everyone's help has been important. :-)
+In alphabetical order:
+ - Mark Adler
+ - Anders F. Björklund
+ - İsmail Dönmez
+ - Jean-loup Gailly
+ - Per Øyvind Karlsen
+ - Ville Koskinen
+ - Jim Meyering
+ - Igor Pavlov
+ - Mikko Pouru
+ - Alexandre Sauvé
+ - Julian Seward
+ - Mohammed Adnène Trojette
+
+Also thanks to all the people who have participated the Tukaani project
+and others who I have forgot.
+
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..61b2e3f
--- /dev/null
+++ b/TODO
@@ -0,0 +1,109 @@
+
+LZMA Utils TODO List
+--------------------
+
+Major missing features
+
+ Memory limits in the command line tool apply only to compression.
+
+ Threading support in the lzma command line tool is still primitive.
+ It cannot split a file in pieces yet.
+
+ The --list mode isn't implemented in the command line tool.
+
+ Handling of Multi-Block Stream information should be separated
+ from Stream encoder and decoder. Those would be useful to implement
+ multi-threaded coding in applications.
+
+ Buffer to buffer coding is not implemented in liblzma. Probably
+ a naive version should be written first, which would simply wrap
+ things around lzma_stream. Later, there should be separate buffer
+ coding functions, that are slightly faster (less memcpy()) and
+ have smaller memory usage than the functions using lzma_stream.
+
+ libzfile is not implemented.
+
+ LZMA filter doesn't support predefined history buffer.
+
+
+Security
+
+ Search for bugs, especially security related issues. Security is
+ important in every piece of code in LZMA Utils, but it is extremely
+ important in the decoder part of liblzma.
+
+ Subblock: If there is LZMA as a Subfilter but without EOPM, can it
+ trigger infinite loop when Subblock's "Unset Subfilter" flag is hit?
+
+ Similarly, can LZ decoder get stuck in infinite loop if the next
+ filter in the chain returns LZMA_STREAM_END but the decoded data
+ doesn't allow finishing the LZ decoding?
+
+
+Reliability
+
+ Create a test suite to be run with "make check".
+
+ Should we use strlimit() and getrlimit() for memory usage limitting?
+
+
+Performance
+
+ Benchmark the CRC code on non-x86 CPUs. Won't have huge effect on
+ overall speed, but it would still be nice to know what algorithm
+ variant is the best on different CPUs.
+
+
+Third party support
+
+ Add support for LZMA to various applications. This naturally requires
+ cooperating with the authors of the specific applications.
+ * GNU grep and GNU diffutils: BSD grep already uses zlib directly
+ instead of ugly shell scripts. It would be nice to get similar
+ feature into relevant GNU tools. With libzfile, multiple
+ compression formats would be easy to support.
+ * kioslave for KDE
+ * Magic for the `file' command
+ * GNU Midnight Commander
+ * GNU Texinfo
+ * The `man' command
+ * Package managers
+
+ Test the patches already written. The patches should be sent to
+ upstream developers _once_ LZMA Utils APIs are stable enough (so
+ people don't need to fix those patches all the time).
+
+ Mandriva has quite a few patches. Some of them are OK, some need
+ adapting for new LZMA Utils.
+
+
+Documentation
+
+ Revise the man page of lzma command line tool.
+
+ If the Doxygen docs aren't enough, write good Texinfo manual for
+ liblzma. It's been a long time I've even tried to build the Doxygen
+ docs, so they may look quite bad at the moment.
+
+ Document LZMA as an algorithm. It would be great to have detailed
+ description of the algorithm in English. Many people think, that
+ reading the source code is not the optimal way to learn how LZMA
+ works.
+
+
+Other
+
+ Some things return LZMA_PROG_ERROR with invalid options, some
+ LZMA_HEADER_ERROR. These must be checked carefully and made so
+ that LZMA_HEADER_ERROR is used only when the given option could
+ make sense in future version of libzma.
+
+ lzma_restrict vs. restrict
+
+ Usage of LZMA_RUN vs. LZMA_FINISH with Metadata coders.
+
+ Port the Deflate implementation from 7-Zip into liblzma. 7-Zip's
+ Deflate compresses better than zlib, gzip or Info-ZIP. I don't
+ know if Deflate will be included in .lzma format (probably not),
+ but it's still useful once we also add support for .gz file format.
+
diff --git a/autogen.sh b/autogen.sh
new file mode 100755
index 0000000..beddf73
--- /dev/null
+++ b/autogen.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+
+set -e -x
+
+# autooint copies all kinds of crap even though we have told in
+# configure.ac that we don't want the intl directory. It is able
+# to omit the intl directory but still copies the m4 files needed
+# only by the stuff in the non-existing intl directory.
+autopoint -f
+rm -f \
+ codeset.m4 \
+ glibc2.m4 \
+ glibc21.m4 \
+ intdiv0.m4 \
+ intl.m4 \
+ intldir.m4 \
+ intmax.m4 \
+ inttypes-pri.m4 \
+ inttypes_h.m4 \
+ lcmessage.m4 \
+ lock.m4 \
+ longdouble.m4 \
+ longlong.m4 \
+ printf-posix.m4 \
+ size_max.m4 \
+ stdint_h.m4 \
+ uintmax_t.m4 \
+ ulonglong.m4 \
+ visibility.m4 \
+ wchar_t.m4 \
+ wint_t.m4 \
+ xsize.m4
+
+aclocal -I m4
+libtoolize -c -f || glibtoolize -c -f
+autoconf
+autoheader
+automake -acf --foreign
diff --git a/configure.ac b/configure.ac
new file mode 100644
index 0000000..3f9ad53
--- /dev/null
+++ b/configure.ac
@@ -0,0 +1,611 @@
+# -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+###############################################################################
+#
+# Copyright (C) 2007 Lasse Collin
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+###############################################################################
+
+# NOTE: Don't add useless checks. autoscan detects this and that, but don't
+# let it confuse you. For example, we don't care about checking for behavior
+# of malloc(), stat(), or lstat(), since we don't use those functions in
+# a way that would cause the problems the autoconf macros check.
+
+AC_PREREQ(2.61)
+
+# [LZMA] instead of [LZMA utils] since I prefer to have lzma-version.tar.gz
+# instead of lzma-utils-version.tar.gz.
+AC_INIT([LZMA], [4.42.2alpha], [lasse.collin@tukaani.org])
+
+AC_CONFIG_SRCDIR([src/liblzma/common/common.h])
+AC_CONFIG_HEADER([config.h])
+
+echo
+echo "LZMA Utils $PACKAGE_VERSION"
+
+echo
+echo "System type:"
+# This is needed to know if assembler optimizations can be used.
+AC_CANONICAL_HOST
+
+echo
+echo "Configure options:"
+
+# Enable/disable debugging code:
+AC_MSG_CHECKING([if debugging code should be compiled])
+AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [Enable debugging code.]),
+ [], enable_debug=no)
+if test "x$enable_debug" = xyes; then
+ CFLAGS="-g $CFLAGS"
+ AC_MSG_RESULT([yes])
+else
+ AC_DEFINE(NDEBUG, 1, [Define to disable debugging code.])
+ AC_MSG_RESULT([no])
+fi
+
+# Enable/disable the encoder components:
+AC_MSG_CHECKING([if encoder components should be built])
+AC_ARG_ENABLE(encoder, AC_HELP_STRING([--disable-encoder],
+ [Do not build the encoder components.]),
+ [], enable_encoder=yes)
+if test "x$enable_encoder" = xyes; then
+ AC_DEFINE([HAVE_ENCODER], 1,
+ [Define to 1 if encoder components are enabled.])
+ AC_MSG_RESULT([yes])
+else
+ AC_MSG_RESULT([no])
+fi
+AM_CONDITIONAL(COND_MAIN_ENCODER, test "x$enable_encoder" = xyes)
+
+# Enable/disable the decoder components:
+AC_MSG_CHECKING([if decoder components should be built])
+AC_ARG_ENABLE(decoder, AC_HELP_STRING([--disable-decoder],
+ [Do not build the decoder components.]),
+ [], enable_decoder=yes)
+if test "x$enable_decoder" = xyes; then
+ AC_DEFINE([HAVE_DECODER], 1,
+ [Define to 1 if decoder components are enabled.])
+ AC_MSG_RESULT([yes])
+else
+ AC_MSG_RESULT([no])
+ if test "x$enable_encoder" = xno; then
+ AC_MSG_ERROR([Do not disable both encoder and decoder.])
+ fi
+fi
+AM_CONDITIONAL(COND_MAIN_DECODER, test "x$enable_decoder" = xyes)
+
+# Filters
+AC_MSG_CHECKING([which filters to build])
+AC_ARG_ENABLE(filters, AC_HELP_STRING([--enable-filters=],
+ [Comma-separated list of filters to build. Default=all.
+ Filters used in encoding are needed also in decoding.
+ Available filters: copy subblock x86 powerpc ia64
+ arm armthumb sparc delta lzma]),
+ [], [enable_filters=copy,subblock,x86,powerpc,ia64,arm,armthumb,sparc,delta,lzma])
+enable_filters=`echo "$enable_filters" | sed 's/,/ /g'`
+enable_filters_copy=no
+enable_filters_subblock=no
+enable_filters_x86=no
+enable_filters_powerpc=no
+enable_filters_ia64=no
+enable_filters_arm=no
+enable_filters_armthumb=no
+enable_filters_sparc=no
+enable_filters_delta=no
+enable_filters_lzma=no
+enable_simple_filters=no
+if test "x$enable_filters" = xno || test "x$enable_filters" = x; then
+ AC_MSG_RESULT([])
+ AC_MSG_ERROR([Please enable at least one filter.])
+else
+ for arg in $enable_filters
+ do
+ case $arg in
+ copy)
+ enable_filters_copy=yes
+ AC_DEFINE([HAVE_FILTER_COPY], 1,
+ [Define to 1 if support for the
+ Copy filter is enabled.])
+ ;;
+ subblock)
+ enable_filters_subblock=yes
+ AC_DEFINE([HAVE_FILTER_SUBBLOCK], 1,
+ [Define to 1 if support for the
+ Subblock filter is enabled.])
+ ;;
+ x86)
+ enable_filters_x86=yes
+ enable_simple_filters=yes
+ AC_DEFINE([HAVE_FILTER_X86], 1,
+ [Define to 1 if support for the
+ x86 (BCJ) filter is enabled.])
+ ;;
+ powerpc)
+ enable_filters_powerpc=yes
+ enable_simple_filters=yes
+ AC_DEFINE([HAVE_FILTER_POWERPC], 1,
+ [Define to 1 if support for the
+ PowerPC filter is enabled.])
+ ;;
+ ia64)
+ enable_filters_ia64=yes
+ enable_simple_filters=yes
+ AC_DEFINE([HAVE_FILTER_IA64], 1,
+ [Define to 1 if support for the
+ IA64 filter is enabled.])
+ ;;
+ arm)
+ enable_filters_arm=yes
+ enable_simple_filters=yes
+ AC_DEFINE([HAVE_FILTER_ARM], 1,
+ [Define to 1 if support for the
+ ARM filter is enabled.])
+ ;;
+ armthumb)
+ enable_filters_armthumb=yes
+ enable_simple_filters=yes
+ AC_DEFINE([HAVE_FILTER_ARMTHUMB], 1,
+ [Define to 1 if support for the
+ ARMThumb filter is enabled.])
+ ;;
+ sparc)
+ enable_filters_sparc=yes
+ enable_simple_filters=yes
+ AC_DEFINE([HAVE_FILTER_SPARC], 1,
+ [Define to 1 if support for the
+ SPARC filter is enabled.])
+ ;;
+ delta)
+ enable_filters_delta=yes
+ AC_DEFINE([HAVE_FILTER_DELTA], 1,
+ [Define to 1 if support for the
+ Delta filter is enabled.])
+ ;;
+ lzma)
+ enable_filters_lzma=yes
+ AC_DEFINE([HAVE_FILTER_LZMA], 1,
+ [Define to 1 if support for the
+ LZMA filter is enabled.])
+ ;;
+ *)
+ AC_MSG_RESULT([])
+ AC_MSG_ERROR([unknown filter: $arg])
+ ;;
+ esac
+ done
+ AC_MSG_RESULT([$enable_filters])
+fi
+if test "x$enable_simple_filters" = xyes ; then
+ AC_DEFINE([HAVE_FILTER_SIMPLE], 1, [Define to 1 if support for any
+ of the so called simple filters is enabled.])
+fi
+AM_CONDITIONAL(COND_FILTER_COPY, test "x$enable_filters_copy" = xyes)
+AM_CONDITIONAL(COND_FILTER_SUBBLOCK, test "x$enable_filters_subblock" = xyes)
+AM_CONDITIONAL(COND_FILTER_X86, test "x$enable_filters_x86" = xyes)
+AM_CONDITIONAL(COND_FILTER_POWERPC, test "x$enable_filters_powerpc" = xyes)
+AM_CONDITIONAL(COND_FILTER_IA64, test "x$enable_filters_ia64" = xyes)
+AM_CONDITIONAL(COND_FILTER_ARM, test "x$enable_filters_arm" = xyes)
+AM_CONDITIONAL(COND_FILTER_ARMTHUMB, test "x$enable_filters_armthumb" = xyes)
+AM_CONDITIONAL(COND_FILTER_SPARC, test "x$enable_filters_sparc" = xyes)
+AM_CONDITIONAL(COND_FILTER_DELTA, test "x$enable_filters_delta" = xyes)
+AM_CONDITIONAL(COND_FILTER_LZMA, test "x$enable_filters_lzma" = xyes)
+AM_CONDITIONAL(COND_MAIN_SIMPLE, test "x$enable_simple_filters" = xyes)
+
+# Which match finders should be enabled:
+AC_MSG_CHECKING([which match finders to build])
+AC_ARG_ENABLE(match-finders, AC_HELP_STRING([--enable-match-finders=],
+ [Comma-separated list of match finders to build. Default=all.
+ At least one match finder is required for encoding with
+ the LZMA filter.
+ Available match finders: hc3 hc4 bt2 bt3 bt4]), [],
+ [enable_match_finders=hc3,hc4,bt2,bt3,bt4])
+enable_match_finders=`echo "$enable_match_finders" | sed 's/,/ /g'`
+enable_match_finders_hc3=no
+enable_match_finders_hc4=no
+enable_match_finders_bt2=no
+enable_match_finders_bt3=no
+enable_match_finders_bt4=no
+if test "x$enable_encoder" = xyes && test "x$enable_filters_lzma" = xyes ; then
+ for arg in $enable_match_finders
+ do
+ case $arg in
+ hc3) enable_match_finders_hc3=yes ;;
+ hc4) enable_match_finders_hc4=yes ;;
+ bt2) enable_match_finders_bt2=yes ;;
+ bt3) enable_match_finders_bt3=yes ;;
+ bt4) enable_match_finders_bt4=yes ;;
+ *)
+ AC_MSG_RESULT([])
+ AC_MSG_ERROR([unknown match finder: $arg])
+ ;;
+ esac
+ done
+ AC_MSG_RESULT([$enable_match_finders])
+else
+ AC_MSG_RESULT([(none because not building the LZMA encoder)])
+fi
+AM_CONDITIONAL(COND_MF_HC3, test "x$enable_match_finders_hc3" = xyes)
+AM_CONDITIONAL(COND_MF_HC4, test "x$enable_match_finders_hc4" = xyes)
+AM_CONDITIONAL(COND_MF_BT2, test "x$enable_match_finders_bt2" = xyes)
+AM_CONDITIONAL(COND_MF_BT3, test "x$enable_match_finders_bt3" = xyes)
+AM_CONDITIONAL(COND_MF_BT4, test "x$enable_match_finders_bt4" = xyes)
+
+# Which integrity checks to build
+AC_MSG_CHECKING([which integrity checks to build])
+AC_ARG_ENABLE(checks, AC_HELP_STRING([--enable-checks=],
+ [Comma-separated list of integrity checks to build.
+ Default=all. Available integrity checks: crc32 crc64 sha256]),
+ [], [enable_checks=crc32,crc64,sha256])
+enable_checks=`echo "$enable_checks" | sed 's/,/ /g'`
+enable_checks_crc32=no
+enable_checks_crc64=no
+enable_checks_sha256=no
+if test "x$enable_checks" = xno || test "x$enable_checks" = x; then
+ AC_MSG_RESULT([(none)])
+else
+ for arg in $enable_checks
+ do
+ case $arg in
+ crc32)
+ enable_checks_crc32=yes
+ AC_DEFINE([HAVE_CHECK_CRC32], 1,
+ [Define to 1 if CRC32 support
+ is enabled.])
+ ;;
+ crc64)
+ enable_checks_crc64=yes
+ AC_DEFINE([HAVE_CHECK_CRC64], 1,
+ [Define to 1 if CRC64 support
+ is enabled.])
+ ;;
+ sha256)
+ enable_checks_sha256=yes
+ AC_DEFINE([HAVE_CHECK_SHA256], 1,
+ [Define to 1 if SHA256 support
+ is enabled.])
+ ;;
+ *)
+ AC_MSG_RESULT([])
+ AC_MSG_ERROR([unknown integrity check: $arg])
+ ;;
+ esac
+ done
+ AC_MSG_RESULT([$enable_checks])
+fi
+if test "x$enable_checks_crc32" = xno ; then
+ AC_MSG_ERROR([For now, the CRC32 check must always be enabled.])
+fi
+AM_CONDITIONAL(COND_CHECK_CRC32, test "x$enable_checks_crc32" = xyes)
+AM_CONDITIONAL(COND_CHECK_CRC64, test "x$enable_checks_crc64" = xyes)
+AM_CONDITIONAL(COND_CHECK_SHA256, test "x$enable_checks_sha256" = xyes)
+
+# Assembler optimizations
+AC_MSG_CHECKING([if assembler optimizations should be used])
+AC_ARG_ENABLE(assembler, AC_HELP_STRING([--disable-assembler],
+ [Do not use assembler optimizations even if such exist
+ for the architecture.]),
+ [], [enable_assembler=yes])
+if test "x$enable_assembler" = xyes; then
+ case $host_cpu in
+ i?86) enable_assembler=x86 ;;
+ *) enable_assembler=no ;;
+ esac
+fi
+case $enable_assembler in
+ x86|no) ;;
+ *)
+ AC_MSG_RESULT([])
+ AC_MSG_ERROR([--enable-assembler accepts only \`yes', \`no', or \`x86'.])
+ ;;
+esac
+AC_MSG_RESULT([$enable_assembler])
+AM_CONDITIONAL(COND_ASM_X86, test "x$enable_assembler" = xx86)
+
+# Size optimization
+AC_MSG_CHECKING([if small size is preferred over speed])
+AC_ARG_ENABLE(small, AC_HELP_STRING([--enable-small],
+ [Omit precomputed tables to make liblzma a few kilobytes
+ smaller. This will increase startup time of applications
+ slightly, because the tables need to be computed first.]),
+ [], [enable_small=no])
+if test "x$enable_small" = xyes; then
+ AC_DEFINE([HAVE_SMALL], 1, [Define to 1 if optimizing for size.])
+elif test "x$enable_small" != xno; then
+ AC_MSG_RESULT([])
+ AC_MSG_ERROR([--enable-small accepts only \`yes' or \`no'])
+fi
+AC_MSG_RESULT([$enable_small])
+AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
+
+echo
+echo "Initializing Automake:"
+
+# There's no C++ or Fortran in LZMA Utils:
+CXX=no
+F77=no
+
+AM_INIT_AUTOMAKE
+
+AC_USE_SYSTEM_EXTENSIONS
+
+###############################################################################
+# Checks for programs.
+###############################################################################
+
+AM_PROG_CC_C_O
+AM_PROG_AS
+AC_PROG_LN_S
+
+echo
+echo "Threading support:"
+ACX_PTHREAD
+CC="$PTHREAD_CC"
+
+echo
+echo "Initializing Libtool:"
+AC_PROG_LIBTOOL
+
+
+###############################################################################
+# Checks for libraries.
+###############################################################################
+
+echo
+echo "Initializing gettext:"
+AM_GNU_GETTEXT_VERSION([0.16.1])
+AM_GNU_GETTEXT([external])
+
+###############################################################################
+# Checks for header files.
+###############################################################################
+
+echo
+echo "System headers and functions:"
+
+# There is currently no workarounds in this package if some of
+# these headers are missing.
+AC_CHECK_HEADERS([fcntl.h limits.h sys/time.h],
+ [],
+ [AC_MSG_ERROR([Required header file(s) are missing.])])
+
+# If any of these headers are missing, things should still work correctly:
+AC_CHECK_HEADERS([assert.h errno.h byteswap.h sys/param.h sys/sysctl.h],
+ [], [], [
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+])
+
+
+###############################################################################
+# Checks for typedefs, structures, and compiler characteristics.
+###############################################################################
+
+AC_HEADER_STDBOOL
+AC_C_INLINE
+AC_C_RESTRICT
+
+# The command line tool can copy high resolution timestamps if such
+# information is availabe in struct stat. Otherwise one second accuracy
+# is used. Most systems seem to have st_xtim but BSDs have st_xtimespec.
+AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec, struct stat.st_mtim.tv_nsec,
+ struct stat.st_atimespec.tv_nsec, struct stat.st_mtimespec.tv_nsec])
+
+# It is very unlikely that you want to build liblzma without
+# large file support.
+AC_SYS_LARGEFILE
+
+# At the moment, the only endian-dependent part should be the integrity checks.
+AC_C_BIGENDIAN
+
+
+###############################################################################
+# Checks for library functions.
+###############################################################################
+
+# Gnulib replacements as needed
+gl_GETOPT
+
+# Functions that are not mandatory i.e. we have alternatives for them
+# or we can just drop some functionality:
+AC_CHECK_FUNCS([memcpy memmove memset futimes futimesat])
+
+# Check how to find out the amount of physical memory in the system. The
+# lzma command line tool uses this to automatically limits its memory usage.
+# - sysconf() gives all the needed info on GNU+Linux and Solaris.
+# - BSDs use sysctl().
+AC_MSG_CHECKING([how to detect the amount of physical memory])
+AC_COMPILE_IFELSE([
+#include <unistd.h>
+int
+main()
+{
+ long i;
+ i = sysconf(_SC_PAGESIZE);
+ i = sysconf(_SC_PHYS_PAGES);
+ return 0;
+}
+], [
+ AC_DEFINE([HAVE_PHYSMEM_SYSCONF], 1,
+ [Define to 1 if the amount of physical memory can be detected
+ with sysconf(_SC_PAGESIZE) and sysconf(_SC_PHYS_PAGES).])
+ AC_MSG_RESULT([sysconf])
+], [
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#include <sys/types.h>
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+#include <sys/sysctl.h>
+int
+main()
+{
+ int name[2] = { CTL_HW, HW_PHYSMEM };
+ unsigned long mem;
+ size_t mem_ptr_size = sizeof(mem);
+ sysctl(name, 2, &mem, &mem_ptr_size, NULL, NULL);
+ return 0;
+}
+]])], [
+ AC_DEFINE([HAVE_PHYSMEM_SYSCTL], 1,
+ [Define to 1 if the amount of physical memory can be detected
+ with sysctl().])
+ AC_MSG_RESULT([sysctl])
+], [
+ AC_MSG_RESULT([unknown])
+])])
+
+# Check how to find out the number of available CPU cores in the system.
+# sysconf(_SC_NPROCESSORS_ONLN) works on most systems, except that BSDs
+# use sysctl().
+AC_MSG_CHECKING([how to detect the number of available CPU cores])
+AC_COMPILE_IFELSE([
+#include <unistd.h>
+int
+main()
+{
+ long i;
+ i = sysconf(_SC_NPROCESSORS_ONLN);
+ return 0;
+}
+], [
+ AC_DEFINE([HAVE_NCPU_SYSCONF], 1,
+ [Define to 1 if the number of available CPU cores can be
+ detected with sysconf(_SC_NPROCESSORS_ONLN).])
+ AC_MSG_RESULT([sysconf])
+], [
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#include <sys/types.h>
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+#include <sys/sysctl.h>
+int
+main()
+{
+ int name[2] = { CTL_HW, HW_NCPU };
+ int cpus;
+ size_t cpus_size = sizeof(cpus);
+ sysctl(name, 2, &cpus, &cpus_size, NULL, NULL);
+ return 0;
+}
+]])], [
+ AC_DEFINE([HAVE_NCPU_SYSCTL], 1,
+ [Define to 1 if the number of available CPU cores can be
+ detected with sysctl().])
+ AC_MSG_RESULT([sysctl])
+], [
+ AC_MSG_RESULT([unknown])
+])])
+
+
+###############################################################################
+# If using GCC, set some additional CFLAGS:
+###############################################################################
+
+Wno_uninitialized=no
+
+if test -n "$GCC" ; then
+ echo
+ echo "GCC extensions:"
+ gl_VISIBILITY
+ if test -n "$CFLAG_VISIBILITY" ; then
+ CFLAGS="$CFLAG_VISIBILITY $CFLAGS"
+ fi
+
+ # -Wno-uninitialized is needed with -Werror with SHA256 code
+ # to omit a bogus warning.
+ AC_MSG_CHECKING([if $CC accepts -Wno-uninitialized])
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Wno-uninitialized"
+ AC_COMPILE_IFELSE([void foo(void) { }], [Wno_uninitialized=yes])
+ CFLAGS="$OLD_CFLAGS"
+ AC_MSG_RESULT([$Wno_uninitialized])
+
+ # Enable as much warnings as possible. These commented warnings won't
+ # work for LZMA Utils though:
+ # * -Wunreachable-code breaks several assert(0) cases, which are
+ # backed up with "return LZMA_PROG_ERROR".
+ # * -Wcast-qual would break various things where we need a non-const
+ # pointer although we don't modify anything through it.
+ # * -Wcast-align breaks optimized CRC32 and CRC64 implementation
+ # on some architectures (not on x86), where this warning is bogus,
+ # because we take care of correct alignment.
+ for NEW_FLAG in -Wextra -Wformat=2 -Winit-self -Wstrict-aliasing=2 \
+ -Wfloat-equal -Wshadow -Wunsafe-loop-optimizations \
+ -Wpointer-arith -Wbad-function-cast -Wwrite-strings \
+ -Waggregate-return -Wstrict-prototypes \
+ -Wold-style-definition -Wmissing-prototypes \
+ -Wmissing-declarations -Wmissing-noreturn \
+ -Wredundant-decls -Winline -Wdisabled-optimization
+ do
+ AC_MSG_CHECKING([if $CC accepts $NEW_FLAG])
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$NEW_FLAG $CFLAGS"
+ AC_COMPILE_IFELSE([void foo(void) { }], [
+ AC_MSG_RESULT([yes])
+ ], [
+ CFLAGS="$OLD_CFLAGS"
+ AC_MSG_RESULT([no])
+ ])
+ done
+
+ AC_ARG_ENABLE([werror],
+ AC_HELP_STRING([--enable-werror], [Enable -Werror to abort
+ compilation on all compiler warnings.]),
+ [], [enable_werror=no])
+ if test "x$enable_werror" = "xyes"; then
+ CFLAGS="-Werror $CFLAGS"
+ fi
+
+ # IIRC these work with all GCC versions that support -std=c99:
+ CFLAGS="-std=c99 -pedantic -Wall $CFLAGS"
+fi
+
+AM_CONDITIONAL([COND_WNO_UNINITIALIZED], test "x$Wno_uninitialized" = "xyes")
+
+
+###############################################################################
+# Create the makefiles and config.h
+###############################################################################
+
+echo
+
+# Don't build the lib directory at all if we don't need any replacement
+# functions.
+AM_CONDITIONAL([COND_GNULIB], test -n "$LIBOBJS")
+
+AC_CONFIG_FILES([
+ Doxyfile
+ Makefile
+ po/Makefile.in
+ lib/Makefile
+ src/Makefile
+ src/liblzma/lzma.pc
+ src/liblzma/Makefile
+ src/liblzma/api/Makefile
+ src/liblzma/common/Makefile
+ src/liblzma/check/Makefile
+ src/liblzma/lz/Makefile
+ src/liblzma/lzma/Makefile
+ src/liblzma/simple/Makefile
+ src/liblzma/subblock/Makefile
+ src/liblzma/rangecoder/Makefile
+ src/lzma/Makefile
+ src/lzmadec/Makefile
+ src/scripts/Makefile
+ tests/Makefile
+])
+
+AC_OUTPUT
diff --git a/doc/bugs.txt b/doc/bugs.txt
new file mode 100644
index 0000000..5557934
--- /dev/null
+++ b/doc/bugs.txt
@@ -0,0 +1,46 @@
+
+Reporting bugs
+--------------
+
+ Naturally it is easiest for me if you already know what causes the
+ unexpected behavior. Even better if you have a patch to propose.
+ However, quite often the reason for unexpected behavior is unknown,
+ so below are a few things what to do before sending a bug report.
+
+ In case of a crash (usually segmentation violation):
+
+ 1. Try to create a small example how to reprocude the issue.
+
+ 2. If you are writing an application using liblzma or libzfile,
+ double check that you are using the libraries correctly (for
+ example, that you didn't forget to call lzma_init()). If it is
+ the command line tool included in LZMA Utils that is crashing,
+ ignore this step.
+
+ 3. Compile LZMA Utils with debugging code using configure switch
+ `--enable-debug'. If you are using GCC as the compiler, use
+ CFLAGS='-O0 -ggdb'. Don't strip the resulting binaries.
+
+ 4. Turn on core dumps. The exact command depends on your shell;
+ for example in GNU bash it is done with `ulimit -c unlimited',
+ and in tcsh with `limit coredumpsize unlimited'.
+
+ 5. Try to reproduce the suspected bug. If you get `assertion failed'
+ message, be sure to include the complete message in your bug
+ report. If the application leaves a coredump, get a backtrace
+ using gdb:
+ $ gdb /path/to/app-binary # Loads the app to the debugger.
+ (gdb) core core # Opens the coredump.
+ (gdb) bt # Prints the backtrace. Copy & paste to bug report.
+ (gdb) quit # Quits gdb.
+
+ Send your bug report to Lasse Collin <lasse.collin@tukaani.org>. Don't
+ send the core dump file or the actual executables. If you have a small
+ example file(s) (total size less than 100 KiB), please include it/them
+ as an attachment.
+
+ Do NOT complain about problems with LZMA Utils to Igor Pavlov.
+ Although the code of LZMA Utils is derived from his code, there are
+ a lot of changes, which may have introduced bugs not present in
+ the original version.
+
diff --git a/doc/faq.txt b/doc/faq.txt
new file mode 100644
index 0000000..d01cf91
--- /dev/null
+++ b/doc/faq.txt
@@ -0,0 +1,247 @@
+
+LZMA Utils FAQ
+--------------
+
+ Copyright (C) 2007 Lasse Collin
+
+ Copying and distribution of this file, with or without modification,
+ are permitted in any medium without royalty provided the copyright
+ notice and this notice are preserved.
+
+
+Q: What are LZMA, LZMA Utils, lzma, .lzma, liblzma, LZMA SDK, LZMA_Alone,
+ 7-Zip and p7zip?
+
+A: LZMA stands for Lempel-Ziv-Markov chain-Algorithm. LZMA is the name
+ of the compression algorithm designed by Igor Pavlov. He is the author
+ of 7-Zip, which is a great LGPL'd compression tool for Microsoft
+ Windows operating systems. In addition to 7-Zip itself, also LZMA SDK
+ is available on the website of 7-Zip. LZMA SDK contains LZMA
+ implementations in C++, Java and C#. The C++ version is the original
+ implementation which is used also in 7-Zip itself.
+
+ Excluding the unrar plugin, 7-Zip is free software (free as in
+ freedom). Thanks to this, it was possible to port it to POSIX
+ platforms. The port was done and is maintained by myspace (TODO:
+ myspace's real name?). p7zip is a port of 7-Zip's command line version;
+ p7zip doesn't include the 7-Zip's GUI.
+
+ In POSIX world, users are used to gzip and bzip2 command line tools.
+ Developers know APIs of zlib and libbzip2. LZMA Utils try to ease
+ adoption of LZMA on free operating systems by providing a compression
+ library and a set of command line tools. The library is called liblzma.
+ It provides a zlib-like API making it easy to adapt LZMA compression in
+ existing applications. The main command line tool is known as lzma,
+ whose command line syntax is very similar to that of gzip and bzip2.
+
+ The original command line tool from LZMA SDK (lzma.exe) was found from
+ a directory called LZMA_Alone in the LZMA SDK. It used a simple header
+ format in .lzma files. This format was also used by LZMA Utils up to
+ and including 4.32.x. In LZMA Utils documentation, LZMA_Alone refers
+ to both the file format and the command line tool from LZMA SDK.
+
+ Because of various limitations of the LZMA_Alone file format, a new
+ file format was developed. Extending some existing format such as .gz
+ used by gzip was considered, but these formats were found to be too
+ limited. The filename suffix for the new .lzma format is `.lzma'. The
+ same suffix is also used for files in the LZMA_Alone format. To make
+ the transition to the new format as transparent as possible, LZMA Utils
+ support both the new and old formats transparently.
+
+ 7-Zip and LZMA SDK: <http://7-zip.org/>
+ p7zip: <http://p7zip.sourceforge.net/>
+ LZMA Utils: <http://tukaani.org/lzma/>
+
+
+Q: What LZMA implementations there are available?
+
+A: LZMA SDK contains implementations in C++, Java and C#. The C++ version
+ is the original implementation which is part of 7-Zip. LZMA SDK
+ contains also a small LZMA decoder in C.
+
+ A port of LZMA SDK to Pascal was made by Alan Birtles
+ <http://www.birtles.org.uk/programming/>. It should work with
+ multiple Pascal programming language implementations.
+
+ LZMA Utils includes liblzma, which is directly based on LZMA SDK.
+ liblzma is written in C (C99, not C89). In contrast to C++ callback
+ API used by LZMA SDK, liblzma uses zlib-like stateful C API. I do not
+ want to comment whether both/former/latter/neither API(s) are good or
+ bad. The only reason to implement a zlib-like API was, that many
+ developers are already familiar with zlib, and very many applications
+ already use zlib. Having a similar API makes it easier to include LZMA
+ support in existing applications.
+
+ See also <http://en.wikipedia.org/wiki/LZMA#External_links>.
+
+
+Q: Which file formats are supported by LZMA Utils?
+
+A: Even when the raw LZMA stream is always the same, it can be wrapped
+ in different container formats. The preferred format is the new .lzma
+ format. It has magic bytes (the first six bytes: 0xFF 'L' 'Z' 'M'
+ 'A' 0x00). The format supports chaining up to seven filters filters,
+ splitting data to multiple blocks for easier multi-threading and rough
+ random-access reading. The file integrity is verified using CRC32,
+ CRC64, or SHA256, and by verifying the uncompressed size of the file.
+
+ LZMA SDK includes a tool called LZMA_Alone. It supports uses a
+ primitive header which includes only the mandatory stream information
+ required by the LZMA decoder. This format can be both read and
+ written by liblzma and the command line tool (use --format=alone to
+ create such files).
+
+ .7z is the native archive format used by 7-Zip. This format is not
+ supported by liblzma, and probably will never be supported. You
+ should use e.g. p7zip to extract .7z files.
+
+ It is possible to implement custom file formats by using raw filter
+ mode in liblzma. In this mode the application needs to store the filter
+ properties and provide them to liblzma before starting to uncompress
+ the data.
+
+
+Q: How can I identify files containing LZMA compressed data?
+
+A: The preferred filename suffix for .lzma files is `.lzma'. `.tar.lzma'
+ may be abbreviated to `.tlz'. The same suffixes are used for files in
+ LZMA_Alone format. In practice this should be no problem since tools
+ included in LZMA Utils support both formats transparently.
+
+ Checking the magic bytes is easy way to detect files in the new .lzma
+ format (the first six bytes: 0xFF 'L' 'Z' 'M' 'A' 0x00). The "file"
+ command version FIXME contains magic strings for this format.
+
+ The old LZMA_Alone format has no magic bytes. Its header cannot contain
+ arbitrary bytes, thus it is possible to make a guess. Unfortunately the
+ guessing is usually too hard to be reliable, so don't try it unless you
+ are desperate.
+
+
+Q: Does the lzma command line tool support sparse files?
+
+A: Sparse files can (of course) be compressed like normal files, but
+ uncompression will not restore sparseness of the file. Use an archiver
+ tool to take care of sparseness before compressing the data with lzma.
+
+ The reason for this is that archiver tools handle files, while
+ compression tools handle streams or buffers. Being a sparse file is
+ a property of the file on the disk, not a property of the stream or
+ buffer.
+
+
+Q: Can I recover parts of a broken LZMA file (e.g. corrupted CD-R)?
+
+A: With LZMA_Alone and single-block .lzma files, you can uncompress the
+ file until you hit the first broken byte. The data after the broken
+ position is lost. LZMA relies on the uncompression history, and if
+ bytes are missing in the middle of the file, it is impossible to
+ reliably continue after the broken section.
+
+ With multi-block .lzma files it may be possible to locale the next
+ block in the file and continue decoding there. A limited recovery
+ tool for this kind of situations is planned.
+
+
+Q: Is LZMA patented?
+
+A: No, the authors are not aware of any patents that could affect LZMA.
+ However, due to nature of software patents, the authors cannot
+ guarantee, that LZMA isn't affected by any third party patent.
+
+
+Q: Where can I find documentation about how LZMA works as an algorithm?
+
+A: Read the source code, Luke. There is no documentation about LZMA
+ internals. It is possible that Igor Pavlov is the only person on
+ the Earth that completely knows and understands the algorithm.
+
+ You could begin by downloading LZMA SDK, and start reading from
+ the LZMA decoder to get some idea about the bitstream format.
+ Before you begin, you should know the basics of LZ77 and
+ range coding algorithms. LZMA is based on LZ77, but LZMA is
+ *a lot* more complex. Range coding is used to compress the
+ final bitstream like Huffman coding is used in Deflate.
+
+
+Q: What are filters?
+
+A: In context of .lzma files, a filter means an implementation of a
+ compression algorithm. The primary filter is LZMA, which is why
+ the names of the tools contain the letters LZMA.
+
+ liblzma and the new .lzma format support also other filters than LZMA.
+ There are different types of filters, which are suitable for different
+ types of data. Thus, to select the optimal filter and settings, the
+ type of the input data being compressed needs to be known.
+
+ Some filters are most useful when combined with another filter like
+ LZMA. These filters increase redundancy in the data, without changing
+ the size of the data, by taking advantage of properties specific to
+ the data being compressed.
+
+ So far, all the filters are always reversible. That is, no matter what
+ data you pass to a filter encoder, it can be always defiltered back to
+ the original form. Because of this, it is safe to compress for example
+ a software package that contains other file types than executables
+ using a filter specific to the architechture of the package being
+ compressed.
+
+ The old LZMA_Alone format supports only the LZMA filter.
+
+
+Q: I cannot find BCJ and BCJ2 filters. Don't they exist in liblzma?
+
+A: BCJ filter is called "x86" in liblzma. BCJ2 is not included,
+ because it requires using more than one encoded output stream.
+
+
+Q: Can I use LZMA in proprietary, non-free applications?
+
+A: liblzma is under the GNU LGPL version 2.1 or (at your opinion) any
+ later version. To summarise (*NOTE* This summary is not legally
+ binding, that is, it doesn't give you any extra permissions compared
+ to the LGPL. Read the GNU LGPL carefully for the exact license
+ conditions.):
+ * All the changes made into the library itself must be published
+ under the same license.
+ * End users must be able to replace the used liblzma. Easiest way
+ to assure this is to link dynamically against liblzma so users
+ can replace the shared library file if they want.
+ * You must make it clear to your users, that your application uses
+ liblzma, and that liblzma is free software under the GNU LGPL.
+ A copy of GNU LGPL must be included.
+
+ LZMA SDK contains a special exception which allows linking *unmodified*
+ code statically with a non-free application. This exception does *not*
+ apply to liblzma.
+
+ As an alternative, you can support the development of LZMA and 7-Zip
+ by buying a proprietary license from Igor Pavlov. See homepage of
+ LZMA SDK <http://7-zip.org/sdk.html> for more information. Note that
+ having a proprietary license from Igor Pavlov doesn't allow you to use
+ liblzma in a way that contradicts with the GNU LGPL, because liblzma
+ contains code that is not copyrighted by Igor Pavlov. Please contact
+ both Lasse Collin and Igor Pavlov if the license conditions of liblzma
+ are not suitable for you.
+
+
+Q: I would like to help. What can I do?
+
+A: See the TODO file. Please contact Lasse Collin before starting to do
+ anything, because it is possible that someone else is already working
+ on the same thing.
+
+
+Q: How can I contact the authors?
+
+A: Lasse Collin is the maintainer of LZMA Utils. You can contact him
+ either via IRC (Larhzu on #tukaani at Freenode or IRCnet). Email
+ should work too, <lasse.collin@tukaani.org>.
+
+ Igor Pavlov is the father of LZMA. He is the author of 7-Zip
+ and LZMA SDK. <http://7-zip.org/>
+
+ NOTE: Please don't bother Igor Pavlov with questions specific
+ to LZMA Utils.
+
diff --git a/doc/file-format.txt b/doc/file-format.txt
new file mode 100644
index 0000000..4a90a67
--- /dev/null
+++ b/doc/file-format.txt
@@ -0,0 +1,1861 @@
+
+The .lzma File Format
+---------------------
+
+ 0. Preface
+ 0.1. Copyright Notices
+ 0.2. Changes
+ 1. Conventions
+ 1.1. Byte and Its Representation
+ 1.2. Multibyte Integers
+ 2. Stream
+ 2.1. Stream Types
+ 2.1.1. Single-Block Stream
+ 2.1.2. Multi-Block Stream
+ 2.2. Stream Header
+ 2.2.1. Header Magic Bytes
+ 2.2.2. Stream Flags
+ 2.2.3. CRC32
+ 3. Block
+ 3.1. Block Header
+ 3.1.1. Block Flags
+ 3.1.2. Compressed Size
+ 3.1.3. Uncompressed Size
+ 3.1.4. List of Filter Flags
+ 3.1.4.1. Misc
+ 3.1.4.2. External ID
+ 3.1.4.3. External Size of Properties
+ 3.1.4.4. Filter Properties
+ 3.1.5. CRC32
+ 3.1.6. Header Padding
+ 3.2. Compressed Data
+ 3.3. Block Footer
+ 3.3.1. Check
+ 3.3.2. Stream Footer
+ 3.3.2.1. Uncompressed Size
+ 3.3.2.2. Backward Size
+ 3.3.2.3. Stream Flags
+ 3.3.2.4. Footer Magic Bytes
+ 3.3.3. Footer Padding
+ 4. Filters
+ 4.1. Detecting when All Data Has Been Decoded
+ 4.1.1. With Uncompressed Size
+ 4.1.2. With End of Input
+ 4.1.3. With End of Payload Marker
+ 4.2. Alignment
+ 4.3. Filters
+ 4.3.1. Copy
+ 4.3.2. Subblock
+ 4.3.2.1. Format of the Encoded Output
+ 4.3.3. Delta
+ 4.3.3.1. Format of the Encoded Output
+ 4.3.4. LZMA
+ 4.3.4.1. LZMA Properties
+ 4.3.4.2. Dictionary Flags
+ 4.3.5. Branch/Call/Jump Filters for Executables
+ 5. Metadata
+ 5.1. Metadata Flags
+ 5.2. Size of Header Metadata Block
+ 5.3. Total Size
+ 5.4. Uncompressed Size
+ 5.5. Index
+ 5.5.1. Number of Data Blocks
+ 5.5.2. Total Sizes
+ 5.5.3. Uncompressed Sizes
+ 5.6. Extra
+ 5.6.1. 0x00: Dummy/Padding
+ 5.6.2. 0x01: OpenPGP Signature
+ 5.6.3. 0x02: Filter Information
+ 5.6.4. 0x03: Comment
+ 5.6.5. 0x04: List of Checks
+ 5.6.6. 0x05: Original Filename
+ 5.6.7. 0x07: Modification Time
+ 5.6.8. 0x09: High-Resolution Modification Time
+ 5.6.9. 0x0B: MIME Type
+ 5.6.10. 0x0D: Homepage URL
+ 6. Custom Filter and Extra Record IDs
+ 6.1. Reserved Custom Filter ID Ranges
+ 7. Cyclic Redundancy Checks
+ 8. References
+ 8.1. Normative References
+ 8.2. Informative References
+
+
+0. Preface
+
+ This document describes the .lzma file format (filename suffix
+ `.lzma', MIME type `application/x-lzma'). It is intended that
+ this format replace the format used by the LZMA_Alone tool
+ included in LZMA SDK up to and including version 4.43.
+
+ IMPORTANT: The version described in this document is a
+ draft, NOT a final, official version. Changes
+ are possible.
+
+
+0.1. Copyright Notices
+
+ Copyright (C) 2006, 2007 Lasse Collin <lasse.collin@tukaani.org>
+ Copyright (C) 2006 Ville Koskinen <w-ber@iki.fi>
+
+ Copying and distribution of this file, with or without
+ modification, are permitted in any medium without royalty
+ provided the copyright notice and this notice are preserved.
+ Modified versions must be marked as such.
+
+ All source code examples given in this document are put into
+ the public domain by the authors of this document.
+
+ Thanks for helping with this document goes to Igor Pavlov,
+ Mark Adler and Mikko Pouru.
+
+
+0.2. Changes
+
+ Last modified: 2007-12-02 22:40+0200
+
+ (A changelog will be kept once the first official version
+ is made.)
+
+
+1. Conventions
+
+ The keywords `must', `must not', `required', `should',
+ `should not', `recommended', `may', and `optional' in this
+ document are to be interpreted as described in [RFC-2119].
+ These words are not capitalized in this document.
+
+ Indicating a warning means displaying a message, returning
+ appropriate exit status, or something else to let the user
+ know that something worth warning occurred. The operation
+ should still finish if a warning is indicated.
+
+ Indicating an error means displaying a message, returning
+ appropriate exit status, or something else to let the user
+ know that something prevented successfully finishing the
+ operation. The operation must be aborted once an error has
+ been indicated.
+
+
+1.1. Byte and Its Representation
+
+ In this document, byte is always 8 bits.
+
+ A `nul byte' has all bits unset. That is, the value of a nul
+ byte is 0x00.
+
+ To represent byte blocks, this document uses notation that
+ is similar to the notation used in [RFC-1952]:
+
+ +-------+
+ | Foo | One byte.
+ +-------+
+
+ +---+---+
+ | Foo | Two bytes; that is, some of the vertical bars
+ +---+---+ can be missing.
+
+ +=======+
+ | Foo | Zero or more bytes.
+ +=======+
+
+ In this document, a boxed byte or a byte sequence declared
+ using this notation is called `a field'. The example field
+ above would be called called `the Foo field' or plain `Foo'.
+
+
+1.2. Multibyte Integers
+
+ Multibyte integers of static length, such as CRC values,
+ are stored in little endian byte order (least significant
+ byte first).
+
+ When smaller values are more likely than bigger values (e.g.
+ file sizes), multibyte integers are encoded in a simple
+ variable-length representation:
+ - Numbers in the range [0, 127] are copied as is, and take
+ one byte of space.
+ - Bigger numbers will occupy two or more bytes. The lowest
+ seven bits of every byte are used for data; the highest
+ (eighth) bit indicates either that
+ 0) the byte is in the middle of the byte sequence, or
+ 1) the byte is the first or the last byte.
+
+ For now, the value of the variable-length integers is limited
+ to 63 bits, which limits the encoded size of the integer to
+ nine bytes. These limits may be increased in future if needed.
+
+ Note that the encoding is not as optimal as it could be. For
+ example, it is possible to encode the number 42 using any
+ number of bytes between one and nine. This is convenient
+ for non-streamed encoders, that write Compressed Size or
+ Uncompressed Size fields to the Block Header (see Section 3.1)
+ after the Compressed Data field is written to the disk.
+
+ In several situations, the decoder needs to compare that two
+ fields contain identical information. When comparing fields
+ using the encoding described in this Section, the decoder must
+ consider two fields identical if their decoded values are
+ identical; it does not matter if the encoded variable-length
+ representations differ.
+
+ The following C code illustrates encoding and decoding 63-bit
+ variables; the highest bit of uint64_t must be unset. The
+ functions return the number of bytes occupied by the integer
+ (1-9), or zero on error.
+
+ #include <sys/types.h>
+ #include <inttypes.h>
+
+ size_t
+ encode(uint8_t buf[static 9], uint64_t num)
+ {
+ if (num >= (UINT64_C(1) << (9 * 7)))
+ return 0;
+ if (num <= 0x7F) {
+ buf[0] = num;
+ return 1;
+ }
+ buf[0] = (num & 0x7F) | 0x80;
+ num >>= 7;
+ size_t i = 1;
+ while (num >= 0x80) {
+ buf[i++] = num & 0x7F;
+ num >>= 7;
+ }
+ buf[i++] = num | 0x80;
+ return i;
+ }
+
+ size_t
+ decode(const uint8_t buf[], size_t size_max, uint64_t *num)
+ {
+ if (size_max == 0)
+ return 0;
+ if (size_max > 9)
+ size_max = 9;
+ *num = buf[0] & 0x7F;
+ if (!(buf[0] & 0x80))
+ return 1;
+ size_t i = 1;
+ do {
+ if (i == size_max)
+ return 0;
+ *num |= (uint64_t)(buf[i] & 0x7F) << (7 * i);
+ } while (!(buf[i++] & 0x80));
+ return i;
+ }
+
+ size_t
+ decode_reverse(const uint8_t buf[], size_t size_max,
+ uint64_t *num)
+ {
+ if (size_max == 0)
+ return 0;
+ const size_t end = size_max > 9 ? size_max - 9 : 0;
+ size_t i = size_max - 1;
+ *num = buf[i] & 0x7F;
+ if (!(buf[i] & 0x80))
+ return 1;
+ do {
+ if (i-- == end)
+ return 0;
+ *num <<= 7;
+ *num |= buf[i] & 0x7F;
+ } while (!(buf[i] & 0x80));
+ return size_max - i;
+ }
+
+
+2. Stream
+
+ +========+========+========+
+ | Stream | Stream | Stream | ...
+ +========+========+========+
+
+ A file contains usually only one Stream. However, it is
+ possible to concatenate multiple Streams together with no
+ additional processing. It is up to the implementation to
+ decide if the decoder will continue decoding from the next
+ Stream once the end of the first Stream has been reached.
+
+
+2.1. Stream Types
+
+ There are two types of Streams: Single-Block Streams and
+ Multi-Block Streams. Decoders conforming to this specification
+ must support at least Single-Block Streams. Supporting
+ Multi-Block Streams is optional. If the decoder supports only
+ Single-Block Streams, the documentation of the decoder should
+ mention this fact clearly.
+
+
+2.1.1. Single-Block Stream
+
+ +===============+============+
+ | Stream Header | Data Block |
+ +===============+============+
+
+ As the name says, a Single-Block Stream has exactly one Block.
+ The Block must be a Data Block; Metadata Blocks are not allowed
+ in Single-Block Streams.
+
+
+2.1.2. Multi-Block Stream
+
+ +===============+=======================+
+ | Stream Header | Header Metadata Block |
+ +===============+=======================+
+
+ +============+ +============+=======================+
+ ---> | Data Block | ... | Data Block | Footer Metadata Block |
+ +============+ +============+=======================+
+
+ Notes:
+ - Stream Header is mandatory.
+ - Header Metadata Block is optional.
+ - Each Multi-Block Stream has at least one Data Block. The
+ maximum number of Data Blocks is not limited.
+ - Footer Metadata Block is mandatory.
+
+
+2.2. Stream Header
+
+ +---+---+---+---+---+---+--------------+--+--+--+--+
+ | Header Magic Bytes | Stream Flags | CRC32 |
+ +---+---+---+---+---+---+--------------+--+--+--+--+
+
+
+2.2.1. Header Magic Bytes
+
+ The first six (6) bytes of the Stream are so called Header
+ Magic Bytes. They can be used to identify the file type.
+
+ Using a C array and ASCII:
+ const uint8_t HEADER_MAGIC[6]
+ = { 0xFF, 'L', 'Z', 'M', 'A', 0x00 };
+
+ In plain hexadecimal:
+ FF 4C 5A 4D 41 00
+
+ Notes:
+ - The first byte (0xFF) was chosen so that the files cannot
+ be erroneously detected as being in LZMA_Alone format, in
+ which the first byte is in the the range [0x00, 0xE0].
+ - The sixth byte (0x00) was chosen to prevent applications
+ from misdetecting the file as a text file.
+
+
+2.2.2. Stream Flags
+
+ Bit(s) Mask Description
+ 0-2 0x07 Type of Check (see Section 3.3.1):
+ ID Size Check name
+ 0x00 0 bytes None
+ 0x01 4 bytes CRC32
+ 0x02 4 bytes (Reserved)
+ 0x03 8 bytes CRC64
+ 0x04 16 bytes (Reserved)
+ 0x05 32 bytes SHA-256
+ 0x06 32 bytes (Reserved)
+ 0x07 64 bytes (Reserved)
+ 3 0x08 The CRC32 field is present in Block Headers.
+ 4 0x10 If unset, this is a Single-Block Stream; if set,
+ this is a Multi-Block Stream.
+ 5-7 0xE0 Reserved for future use; must be zero for now.
+
+ Implementations must support at least the Check IDs 0x00 (None)
+ and 0x01 (CRC32). Supporting other Check IDs is optional. If an
+ unsupported Check is used, the decoder must indicate a warning
+ or error.
+
+ If any reserved bit is set, the decoder must indicate an error.
+ It is possible that there is a new field present which the
+ decoder is not aware of, and can thus parse the Stream Header
+ incorrectly.
+
+
+2.2.3. CRC32
+
+ The CRC32 is calculated from the Stream Flags field. It is
+ stored as an unsigned 32-bit little endian integer. If the
+ calculated value does not match the stored one, the decoder
+ must indicate an error.
+
+ Note that this field is always present; the bit in Stream Flags
+ controls only presence of CRC32 in Block Headers.
+
+
+3. Block
+
+ +==============+=================+==============+
+ | Block Header | Compressed Data | Block Footer |
+ +==============+=================+==============+
+
+ There are two types of Blocks:
+ - Data Blocks hold the actual compressed data.
+ - Metadata Blocks hold the Index, Extra, and a few other
+ non-data fields (see Section 5).
+
+ The type of the Block is indicated by the corresponding bit
+ in the Block Flags field (see Section 3.1.1).
+
+
+3.1. Block Header
+
+ +------+------+=================+===================+
+ | Block Flags | Compressed Size | Uncompressed Size |
+ +------+------+=================+===================+
+
+ +======================+--+--+--+--+================+
+ ---> | List of Filter Flags | CRC32 | Header Padding |
+ +======================+--+--+--+--+================+
+
+
+3.1.1. Block Flags
+
+ The first byte of the Block Flags field is a bit field:
+
+ Bit(s) Mask Description
+ 0-2 0x07 Number of filters (0-7)
+ 3 0x08 Use End of Payload Marker (even if
+ Uncompressed Size is stored to Block Header).
+ 4 0x10 The Compressed Size field is present.
+ 5 0x20 The Uncompressed Size field is present.
+ 6 0x40 Reserved for future use; must be zero for now.
+ 7 0x80 This is a Metadata Block.
+
+ The second byte of the Block Flags field is also a bit field:
+
+ Bit(s) Mask Description
+ 0-4 0x1F Size of the Header Padding field (0-31 bytes)
+ 5-7 0xE0 Reserved for future use; must be zero for now.
+
+ The decoder must indicate an error if End of Payload Marker
+ is not used and Uncompressed Size is not stored to the Block
+ Header. Because of this, the first byte of Block Flags can
+ never be a nul byte. This is useful when detecting beginning
+ of the Block after Footer Padding (see Section 3.3.3).
+
+ If any reserved bit is set, the decoder must indicate an error.
+ It is possible that there is a new field present which the
+ decoder is not aware of, and can thus parse the Block Header
+ incorrectly.
+
+
+3.1.2. Compressed Size
+
+ This field is present only if the appropriate bit is set in
+ the Block Flags field (see Section 3.1.1).
+
+ This field contains the size of the Compressed Data field.
+ The size is stored using the encoding described in Section 1.2.
+ If the Compressed Size does not match the real size of the
+ Compressed Data field, the decoder must indicate an error.
+
+ Having the Compressed Size field in the Block Header can be
+ useful for multithreaded decoding when seeking is not possible.
+ If the Blocks are small enough, the decoder can read multiple
+ Blocks into its internal buffer, and decode the Blocks in
+ parallel.
+
+ Compressed Size can also be useful when seeking forwards to
+ a specific location in streamed mode: the decoder can quickly
+ skip over irrelevant Blocks, without decoding them.
+
+
+3.1.3. Uncompressed Size
+
+ This field is present only if the appropriate bit is set in
+ the Block Flags field (see Section 3.1.1).
+
+ The Uncompressed Size field contains the size of the Block
+ after uncompressing.
+
+ Storing Uncompressed Size serves several purposes:
+ - The decoder will know when all of the data has been
+ decoded without an explicit End of Payload Marker.
+ - The decoder knows how much memory it needs to allocate
+ for a temporary buffer in multithreaded mode.
+ - Simple error detection: wrong size indicates a broken file.
+ - Sometimes it is useful to know the file size without
+ uncompressing the file.
+
+ It should be noted that the only reliable way to find out what
+ the real uncompressed size is is to uncompress the Block,
+ because the Block Header and Metadata Block fields may contain
+ (intentionally or unintentionally) invalid information.
+
+ Uncompressed Size is stored using the encoding described in
+ Section 1.2. If the Uncompressed Size does not match the
+ real uncompressed size, the decoder must indicate an error.
+
+
+3.1.4. List of Filter Flags
+
+ +================+================+ +================+
+ | Filter 0 Flags | Filter 1 Flags | ... | Filter n Flags |
+ +================+================+ +================+
+
+ The number of Filter Flags fields is stored in the Block Flags
+ field (see Section 3.1.1). As a special case, if the number of
+ Filter Flags fields is zero, it is equivalent to having the
+ Copy filter as the only filter.
+
+ The format of each Filter Flags field is as follows:
+
+ +------+=============+=============================+
+ | Misc | External ID | External Size of Properties |
+ +------+=============+=============================+
+
+ +===================+
+ ---> | Filter Properties |
+ +===================+
+
+ The list of officially defined Filter IDs and the formats of
+ their Filter Properties are described in Section 4.3.
+
+
+3.1.4.1. Misc
+
+ To save space, the most commonly used Filter IDs and the
+ Size of Filter Properties are encoded in a single byte.
+ Depending on the contents of the Misc field, Filter ID is
+ the value of the Misc or External ID field.
+
+ Value Filter ID Size of Filter Properties
+ 0x00 - 0x1F Misc 0 bytes
+ 0x20 - 0x3F Misc 1 byte
+ 0x40 - 0x5F Misc 2 bytes
+ 0x60 - 0x7F Misc 3 bytes
+ 0x80 - 0x9F Misc 4 bytes
+ 0xA0 - 0xBF Misc 5 bytes
+ 0xC0 - 0xDF Misc 6 bytes
+ 0xE0 - 0xFE External ID 0-30 bytes
+ 0xFF External ID External Size of Properties
+
+ The following code demonstrates parsing the Misc field and,
+ when needed, the External ID and External Size of Properties
+ fields.
+
+ uint64_t id;
+ uint64_t properties_size;
+ uint8_t misc = read_byte();
+
+ if (misc >= 0xE0) {
+ id = read_variable_length_integer();
+
+ if (misc == 0xFF)
+ properties_size = read_variable_length_integer();
+ else
+ properties_size = misc - 0xE0;
+
+ } else {
+ id = misc;
+ properties_size = misc / 0x20;
+ }
+
+
+3.1.4.2. External ID
+
+ This field is present only if the Misc field contains a value
+ that indicates usage of External ID. The External ID is stored
+ using the encoding described in Section 1.2.
+
+
+3.1.4.3. External Size of Properties
+
+ This field is present only if the Misc field contains a value
+ that indicates usage of External Size of Properties. The size
+ of Filter Properties is stored using the encoding described in
+ Section 1.2.
+
+
+3.1.4.4. Filter Properties
+
+ Size of this field depends on the Misc field (Section 3.1.4.1)
+ and, if present, External Size of Properties field (Section
+ 3.1.4.3). The format of this field is depends on the selected
+ filter; see Section 4.3 for details.
+
+
+3.1.5. CRC32
+
+ This field is present only if the appropriate bit is set in
+ the Stream Flags field (see Section 2.2.2).
+
+ The CRC32 is calculated over everything in the Block Header
+ field except the Header Padding field and the CRC32 field
+ itself. It is stored as an unsigned 32-bit little endian
+ integer. If the calculated value does not match the stored
+ one, the decoder must indicate an error.
+
+
+3.1.6. Header Padding
+
+ This field contains as many nul bytes as indicated by the value
+ stored in the Header Flags field. If the Header Padding field
+ contains any non-nul bytes, the decoder must indicate an error.
+
+ The intent of the Header Padding field is to allow alignment
+ of Compressed Data. The usefulness of alignment is described
+ in Section 4.3.
+
+
+3.2. Compressed Data
+
+ The format of Compressed Data depends on Block Flags and List
+ of Filter Flags. Excluding the descriptions of the simplest
+ filters in Section 4, the format of the filter-specific encoded
+ data is out of scope of this document.
+
+ Note a special case: if End of Payload Marker (see Section
+ 3.1.1) is not used and Uncompressed Size is zero, the size
+ of the Compressed Data field is always zero.
+
+
+3.3. Block Footer
+
+ +=======+===============+================+
+ | Check | Stream Footer | Footer Padding |
+ +=======+===============+================+
+
+
+3.3.1. Check
+
+ The type and size of the Check field depends on which bits
+ are set in the Stream Flags field (see Section 2.2.2).
+
+ The Check, when used, is calculated from the original
+ uncompressed data. If the calculated Check does not match the
+ stored one, the decoder must indicate an error. If the selected
+ type of Check is not supported by the decoder, it must indicate
+ a warning or error.
+
+
+3.3.2. Stream Footer
+
+ +===================+===============+--------------+
+ | Uncompressed Size | Backward Size | Stream Flags |
+ +===================+===============+--------------+
+
+ +----------+---------+
+ ---> | Footer Magic Bytes |
+ +----------+---------+
+
+ Stream Footer is present only in
+ - Data Block of a Single-Block Stream; and
+ - Footer Metadata Block of a Multi-Block Stream.
+
+ The Stream Footer field is placed inside Block Footer, because
+ no padding is allowed between Check and Stream Footer.
+
+
+3.3.2.1. Uncompressed Size
+
+ This field is present only in the Data Block of a Single-Block
+ Stream if Uncompressed Size is not stored to the Block Header
+ (see Section 3.1.1). Without the Uncompressed Size field in
+ Stream Footer it would not be possible to quickly find out
+ the Uncompressed Size of the Stream in all cases.
+
+ Uncompressed Size is stored using the encoding described in
+ Section 1.2. If the stored value does not match the real
+ uncompressed size of the Single-Block Stream, the decoder must
+ indicate an error.
+
+
+3.3.2.2. Backward Size
+
+ This field contains the total size of the Block Header,
+ Compressed Data, Check, and Uncompressed Size fields. The
+ value is stored using the encoding described in Section 1.2.
+ If the Backward Size does not match the real total size of
+ the appropriate fields, the decoder must indicate an error.
+
+ Implementations reading the Stream backwards should notice
+ that the value in this field can never be zero.
+
+
+3.3.2.3. Stream Flags
+
+ This is a copy of the Stream Flags field from the Stream
+ Header. The information stored to Stream Flags is needed
+ when parsing the Stream backwards.
+
+
+3.3.2.4. Footer Magic Bytes
+
+ As the last step of the decoding process, the decoder must
+ verify the existence of Footer Magic Bytes. If they are not
+ found, an error must be indicated.
+
+ Using a C array and ASCII:
+ const uint8_t FOOTER_MAGIC[2] = { 'Y', 'Z' };
+
+ In hexadecimal:
+ 59 5A
+
+ The primary reason to have Footer Magic Bytes is to make
+ it easier to detect incomplete files quickly, without
+ uncompressing. If the file does not end with Footer Magic Bytes
+ (excluding Footer Padding described in Section 3.3.3), it
+ cannot be undamaged, unless someone has intentionally appended
+ garbage after the end of the Stream. (Appending garbage at the
+ end of the file does not prevent uncompressing the file, but
+ may give a warning or error depending on the decoder
+ implementation.)
+
+
+3.3.3. Footer Padding
+
+ In certain situations it is convenient to be able to pad
+ Blocks or Streams to be multiples of, for example, 512 bytes.
+ Footer Padding makes this possible. Note that this is in no
+ way required to enforce alignment in the way described in
+ Section 4.3; the Header Padding field is enough for that.
+
+ When Footer Padding is used, it must contain only nul bytes.
+ Any non-nul byte should be considered as the beginning of
+ a new Block or Stream.
+
+ The possibility of Padding should be taken into account when
+ designing an application that wants to find out information
+ about a Stream by parsing Footer Metadata Block.
+
+ Support for Padding was inspired by a related note in
+ [GNU-tar].
+
+
+4. Filters
+
+ The Block Flags field defines how many filters are used. When
+ more than one filter is used, the filters are chained; that is,
+ the output of one filter is the input of another filter. The
+ following figure illustrates the direction of data flow.
+
+ v Uncompressed Data ^
+ | Filter 0 |
+ Encoder | Filter 1 | Decoder
+ | ... |
+ | Filter n |
+ v Compressed Data ^
+
+ The filters are independent from each other, except that they
+ must cooperate a little to make it possible, in all cases, to
+ detect when all of the data has been decoded. In addition, the
+ filters should cooperate in the encoder to keep the alignment
+ optimal.
+
+
+4.1. Detecting when All Data Has Been Decoded
+
+ There must be a way for the decoder to detect when all of the
+ Compressed Data has been decoded. This is simple when only
+ one filter is used, but a bit more complex when multiple
+ filters are chained.
+
+ This file format supports three methods to detect when all of
+ the data has been decoded:
+ - Uncompressed size
+ - End of Input
+ - End of Payload Marker
+
+ In both encoder and decoder, filters are initialized starting
+ from the first filter in the chain. For each filter, one of
+ these three methods is used.
+
+
+4.1.1. With Uncompressed Size
+
+ This method is the only method supported by all filters.
+ It must be used when uncompressed size is known by the
+ filter-specific encoder or decoder. In practice this means
+ that Uncompressed Size has been stored to the Block Header.
+
+ In case of the first filter in the chain, the uncompressed size
+ given to the filter-specific encoder or decoder equals the
+ Uncompressed Size stored in the Block Header. For the rest of
+ the filters in the chain, uncompressed size is the size of the
+ output data of the previous filter in the chain.
+
+ Note that when Use End of Payload Marker bit is set in Block
+ Flags, Uncompressed Size is considered to be unknown even if
+ it was present in the Block Header. Thus, if End of Payload
+ Marker is used, uncompressed size of all of the filters in
+ the chain is unknown, and can never be used to detect when
+ all of the data has been decoded.
+
+ Once the correct number of bytes has been written out, the
+ filter-specific decoder indicates to its caller that all of
+ the data has been decoded. If the filter-specific decoder
+ detects End of Input or End of Payload Marker before the
+ correct number of bytes is decoded, the decoder must indicate
+ an error.
+
+
+4.1.2. With End of Input
+
+ Most filters will know that all of the data has been decoded
+ when the End of Input data has been reached. Once the filter
+ knows that it has received the input data in its entirety,
+ it finishes its job, and indicates to its caller that all of
+ the data has been decoded. The filter-specific decoder must
+ indicate an error if it detects End of Payload Marker.
+
+ Note that this method can work only when the filter is not
+ the last filter in the chain, because only another filter
+ can indicate the End of Input data. In practice this means,
+ that a filter later in the chain must support embedding
+ End of Payload Marker.
+
+ When a filter that cannot embed End of Payload Marker is the
+ last filter in the chain, Subblock filter is appended to the
+ chain as an implicit filter. In the simplest case, this occurs
+ when no filters are specified, and Uncompressed Size is unknown
+ or the End of Payload Marker bit is set in Block Flags.
+
+
+4.1.3. With End of Payload Marker
+
+ End of Payload Marker is a filter-specific bit sequence that
+ indicates the end of data. It is supported by only a few
+ filters. It is used when uncompressed size is unknown, and
+ the filter
+ - doesn't support End of Input; or
+ - is the last filter in the chain.
+
+ End of Payload Marker is embedded at the end of the encoded
+ data by the filter-specific encoder. When the filter-specific
+ decoder detects the embedded End of Payload Marker, the decoder
+ knows that all of the data has been decoded. Then it finishes
+ its job, and indicates to its caller that all of the data has
+ been decoded. If the filter-specific decoder detects End of
+ Input before End of Payload Marker, the decoder must indicate
+ an error.
+
+ If the filter supports both End of Input and End of Payload
+ Marker, the former is used, unless the filter is the last
+ filter in the chain.
+
+
+4.2. Alignment
+
+ Some filters give better compression ratio or are faster
+ when the input or output data is aligned. For optimal results,
+ the encoder should try to enforce proper alignment when
+ possible. Not enforcing alignment in the encoder is not
+ an error. Thus, the decoder must be able to handle files with
+ suboptimal alignment.
+
+ Alignment of uncompressed input data is usually the job of
+ the application producing the data. For example, to get the
+ best results, an archiver tool should make sure that all
+ PowerPC executable files in the archive stream start at
+ offsets that are multiples of four bytes.
+
+ Some filters, for example LZMA, can be configured to take
+ advantage of specified alignment of input data. Note that
+ taking advantage of aligned input can be benefical also when
+ a filter is not the first filter in the chain. For example,
+ if you compress PowerPC executables, you may want to use the
+ PowerPC filter and chain that with the LZMA filter. Because not
+ only the input but also the output alignment of the PowerPC
+ filter is four bytes, it is now benefical to set LZMA settings
+ so that the LZMA encoder can take advantage of its
+ four-byte-aligned input data.
+
+ The output of the last filter in the chain is stored to the
+ Compressed Data field. Aligning Compressed Data appropriately
+ can increase
+ - speed, if the filtered data is handled multiple bytes at
+ a time by the filter-specific encoder and decoder,
+ because accessing aligned data in computer memory is
+ usually faster; and
+ - compression ratio, if the output data is later compressed
+ with an external compression tool.
+
+ Compressed Data in a Stream can be aligned by using the Header
+ Padding field in the Block Header.
+
+
+4.3. Filters
+
+4.3.1. Copy
+
+ This is a dummy filter that simply copies all data from input
+ to output unmodified.
+
+ Filter ID: 0x00
+ Size of Filter Properties: 0 bytes
+ Changes size of data: No
+
+ Detecting when all of the data has been decoded:
+ Uncompressed size: Yes
+ End of Payload Marker: No
+ End of Input: Yes
+
+ Preferred alignment:
+ Input data: 1 byte
+ Output data: 1 byte
+
+
+4.3.2. Subblock
+
+ The Subblock filter can be used to
+ - embed End of Payload Marker when the otherwise last
+ filter in the chain does not support embedding it; and
+ - apply additional filters in the middle of a Block.
+
+ Filter ID: 0x01
+ Size of Filter Properties: 0 bytes
+ Changes size of data: Yes, unpredictably
+
+ Detecting when all of the data has been decoded:
+ Uncompressed size: Yes
+ End of Payload Marker: Yes
+ End of Input: Yes
+
+ Preferred alignment:
+ Input data: 1 byte
+ Output data: Freely adjustable
+
+
+4.3.2.1. Format of the Encoded Output
+
+ The encoded data from the Subblock filter consist of zero or
+ more Subblocks:
+
+ +==========+==========+
+ | Subblock | Subblock | ...
+ +==========+==========+
+
+ Each Subblock contains two fields:
+
+ +----------------+===============+
+ | Subblock Flags | Subblock Data |
+ +----------------+===============+
+
+ Subblock Flags is a bitfield:
+
+ Bits Mask Description
+ 0-3 0x0F The interpretation of these bits depend on
+ the Subblock Type:
+ - 0x20 Bits 0-3 for Size
+ - 0x30 Bits 0-3 for Repeat Count
+ - Other These bits must be zero.
+ 4-7 0xF0 Subblock Type:
+ - 0x00: Padding
+ - 0x10: End of Payload Marker
+ - 0x20: Data
+ - 0x30: Repeating Data
+ - 0x40: Set Subfilter
+ - 0x50: Unset Subfilter
+ If some other value is detected, the decoder
+ must indicate an error.
+
+ The format of the Subblock Data field depends on Subblock Type.
+
+ Subblocks with the Subblock Type 0x00 (Padding) don't have a
+ Subblock Data field. These Subblocks can be useful for fixing
+ alignment. There can be at maximum of 31 consecutive Subblocks
+ with this Subblock Type; if there are more, the decoder must
+ indicate an error.
+
+ Subblock with the Subblock Type 0x10 (End of Payload Marker)
+ doesn't have a Subblock Data field. The decoder must indicate
+ an error if this Subblock Type is detected when Subfilter is
+ enabled, or when the Subblock filter is not supposed to embed
+ the End of Payload Marker.
+
+ Subblocks with the Subblock Type 0x20 (Data) contain the rest
+ of the Size, which is followed by Size + 1 bytes in the Data
+ field (that is, Data can never be empty):
+
+ +------+------+------+======+
+ | Bits 4-27 for Size | Data |
+ +------+------+------+======+
+
+ Subblocks with the Subblock Type 0x30 (Repeating Data) contain
+ the rest of the Repeat Count, the Size of the Data, and finally
+ the actual Data to be repeated:
+
+ +---------+---------+--------+------+======+
+ | Bits 4-27 for Repeat Count | Size | Data |
+ +---------+---------+--------+------+======+
+
+ The size of the Data field is Size + 1. It is repeated Repeat
+ Count + 1 times. That is, the minimum size of Data is one byte;
+ the maximum size of Data is 256 bytes. The minimum number of
+ repeats is one; the maximum number of repeats is 2^28.
+
+ If Subfilter is not used, the Data field of Subblock Types 0x20
+ and 0x30 is the output of the decoded Subblock filter. If
+ Subfilter is used, Data is the input of the Subfilter, and the
+ decoded output of the Subfilter is the decoded output of the
+ Subblock filter.
+
+ Subblocks with the Subblock Type 0x40 (Set Subfilter) contain
+ a Filter Flags field in Subblock Data:
+
+ +==============+
+ | Filter Flags |
+ +==============+
+
+ It is an error to set the Subfilter to Filter ID 0x00 (Copy)
+ or 0x01 (Subblock). All the other Filter IDs are allowed.
+ The decoder must indicate an error if this Subblock Type is
+ detected when a Subfilter is already enabled.
+
+ Subblocks with the Subblock Type 0x50 (Unset Subfilter) don't
+ have a Subblock Data field. There must be at least one Subblock
+ with Subblock Type 0x20 or 0x30 between Subblocks with Subblock
+ Type 0x40 and 0x50; if there isn't, the decoder must indicate
+ an error.
+
+ Subblock Types 0x40 and 0x50 are always used as a pair: If the
+ Subblock filter has been enabled with Subblock Type 0x40, it
+ must always be disabled later with Subblock Type 0x50.
+ Disabling must be done even if the Subfilter used End of
+ Payload Marker; after the Subfilter has detected End of Payload
+ Marker, the next Subblock that is not Padding must unset the
+ Subfilter.
+
+ When the Subblock filter is used as an implicit filter to embed
+ End of Payload marker, the Subblock Types 0x40 and 0x50 (Set or
+ Unset Subfilter) must not be used. The decoder must indicate an
+ error if it detects any of these Subblock Types in an implicit
+ Subblock filter.
+
+ The following code illustrates the basic structure of a
+ Subblock decoder.
+
+ uint32_t consecutive_padding = 0;
+ bool got_output_with_subfilter = false;
+
+ while (true) {
+ uint32_t size;
+ uint32_t repeat;
+ uint8_t flags = read_byte();
+
+ if (flags != 0)
+ consecutive_padding = 0;
+
+ switch (flags >> 4) {
+ case 0:
+ // Padding
+ if (flags & 0x0F)
+ return DATA_ERROR;
+ if (++consecutive_padding == 32)
+ return DATA_ERROR;
+ break;
+
+ case 1:
+ // End of Payload Marker
+ if (flags & 0x0F)
+ return DATA_ERROR;
+ if (subfilter_enabled || !allow_eopm)
+ return DATA_ERROR;
+ break;
+
+ case 2:
+ // Data
+ size = flags & 0x0F;
+ for (size_t i = 4; i < 28; i += 8)
+ size |= (uint32_t)(read_byte()) << i;
+
+ // If any output is produced, this will
+ // set got_output_with_subfilter to true.
+ copy_data(size);
+ break;
+
+ case 3:
+ // Repeating Data
+ repeat = flags & 0x0F;
+ for (size_t i = 4; i < 28; i += 8)
+ repeat |= (uint32_t)(read_byte()) << i;
+ size = read_byte();
+
+ // If any output is produced, this will
+ // set got_output_with_subfilter to true.
+ copy_repeating_data(size, repeat);
+ break;
+
+ case 4:
+ // Set Subfilter
+ if (flags & 0x0F)
+ return DATA_ERROR;
+ if (subfilter_enabled)
+ return DATA_ERROR;
+ got_output_with_subfilter = false;
+ set_subfilter();
+ break;
+
+ case 5:
+ // Unset Subfilter
+ if (flags & 0x0F)
+ return DATA_ERROR;
+ if (!subfilter_enabled)
+ return DATA_ERROR;
+ if (!got_output_with_subfilter)
+ return DATA_ERROR;
+ unset_subfilter();
+ break;
+
+ default:
+ return DATA_ERROR;
+ }
+ }
+
+
+4.3.3. Delta
+
+ The Delta filter may increase compression ratio when the value
+ of the next byte correlates with the value of an earlier byte
+ at specified distance.
+
+ Filter ID: 0x20
+ Size of Filter Properties: 1 byte
+ Changes size of data: No
+
+ Detecting when all of the data has been decoded:
+ Uncompressed size: Yes
+ End of Payload Marker: No
+ End of Input: Yes
+
+ Preferred alignment:
+ Input data: 1 byte
+ Output data: Same as the original input data
+
+ The Properties byte indicates the delta distance, which can be
+ 1-256 bytes backwards from the current byte: 0x00 indicates
+ distance of 1 byte and 0xFF distance of 256 bytes.
+
+
+4.3.3.1. Format of the Encoded Output
+
+ The code below illustrates both encoding and decoding with
+ the Delta filter.
+
+ // Distance is in the range [1, 256].
+ const unsigned int distance = get_properties_byte() + 1;
+ uint8_t pos = 0;
+ uint8_t delta[256];
+
+ memset(delta, 0, sizeof(delta));
+
+ while (1) {
+ const int byte = read_byte();
+ if (byte == EOF)
+ break;
+
+ uint8_t tmp = delta[(uint8_t)(distance + pos)];
+ if (is_encoder) {
+ tmp = (uint8_t)(byte) - tmp;
+ delta[pos] = (uint8_t)(byte);
+ } else {
+ tmp = (uint8_t)(byte) + tmp;
+ delta[pos] = tmp;
+ }
+
+ write_byte(tmp);
+ --pos;
+ }
+
+
+4.3.4. LZMA
+
+ LZMA (Lempel-Ziv-Markov chain-Algorithm) is a general-purporse
+ compression algorithm with high compression ratio and fast
+ decompression. LZMA based on LZ77 and range coding algorithms.
+
+ Filter ID: 0x40
+ Size of Filter Properties: 2 bytes
+ Changes size of data: Yes, unpredictably
+
+ Detecting when all of the data has been decoded:
+ Uncompressed size: Yes
+ End of Payload Marker: Yes
+ End of Input: No
+
+ Preferred alignment:
+ Input data: Adjustable to 1/2/4/8/16 byte(s)
+ Output data: 1 byte
+
+ At the time of writing, there is no other documentation about
+ how LZMA works than the source code in LZMA SDK. Once such
+ documentation gets written, it will probably be published as
+ a separate document, because including the documentation here
+ would lengthen this document considerably.
+
+ The format of the Filter Properties field is as follows:
+
+ +-----------------+------------------+
+ | LZMA Properties | Dictionary Flags |
+ +-----------------+------------------+
+
+
+4.3.4.1. LZMA Properties
+
+ The LZMA Properties bits contain three properties. An
+ abbreviation is given in parentheses, followed by the value
+ range of the property. The field consists of
+
+ 1) the number of literal context bits (lc, [0, 8]);
+ 2) the number of literal position bits (lp, [0, 4]); and
+ 3) the number of position bits (pb, [0, 4]).
+
+ They are encoded using the following formula:
+
+ LZMA Properties = (pb * 5 + lp) * 9 + lc
+
+ The following C code illustrates a straightforward way to
+ decode the properties:
+
+ uint8_t lc, lp, pb;
+ uint8_t prop = get_lzma_properties() & 0xFF;
+ if (prop > (4 * 5 + 4) * 9 + 8)
+ return LZMA_PROPERTIES_ERROR;
+
+ pb = prop / (9 * 5);
+ prop -= pb * 9 * 5;
+ lp = prop / 9;
+ lc = prop - lp * 9;
+
+
+4.3.4.2. Dictionary Flags
+
+ Currently the lowest six bits of the Dictionary Flags field
+ are in use:
+
+ Bits Mask Description
+ 0-5 0x3F Dictionary Size
+ 6-7 0xC0 Reserved for future use; must be zero for now.
+
+ Dictionary Size is encoded with one-bit mantissa and five-bit
+ exponent. To avoid wasting space, one-byte dictionary has its
+ own special value.
+
+ Raw value Mantissa Exponent Dictionary size
+ 0 1 0 1 byte
+ 1 2 0 2 bytes
+ 2 3 0 3 bytes
+ 3 2 1 4 bytes
+ 4 3 1 6 bytes
+ 5 2 2 8 bytes
+ 6 3 2 12 bytes
+ 7 2 3 16 bytes
+ 8 3 3 24 bytes
+ 9 2 4 32 bytes
+ ... ... ... ...
+ 61 2 30 2 GiB
+ 62 3 30 3 GiB
+ 63 2 31 4 GiB (*)
+
+ (*) The real maximum size of the dictionary is one byte
+ less than 4 GiB, because the distance of 4 GiB is
+ reserved for End of Payload Marker.
+
+ Instead of having a table in the decoder, the dictionary size
+ can be decoded using the following C code:
+
+ uint64_t dictionary_size;
+ const uint8_t bits = get_dictionary_flags() & 0x3F;
+ if (bits == 0) {
+ dictionary_size = 1;
+ } else {
+ dictionary_size = 2 | ((bits + 1) & 1);
+ dictionary_size = dictionary_size << ((bits - 1) / 2);
+ }
+
+
+4.3.5. Branch/Call/Jump Filters for Executables
+
+ These filters convert relative branch, call, and jump
+ instructions to their absolute counterparts in executable
+ files. This conversion increases redundancy and thus
+ compression ratio.
+
+ Size of Filter Properties: 0 or 4 bytes
+ Changes size of data: No
+
+ Detecting when all of the data has been decoded:
+ Uncompressed size: Yes
+ End of Payload Marker: No
+ End of Input: Yes
+
+ Below is the list of filters in this category. The alignment
+ is the same for both input and output data.
+
+ Filter ID Alignment Description
+ 0x04 1 byte x86 filter (BCJ)
+ 0x05 4 bytes PowerPC (big endian) filter
+ 0x06 16 bytes IA64 filter
+ 0x07 4 bytes ARM (little endian) filter
+ 0x08 2 bytes ARM Thumb (little endian) filter
+ 0x09 4 bytes SPARC filter
+
+ If the size of Filter Properties is four bytes, the Filter
+ Properties field contains the start offset used for address
+ conversions. It is stored as an unsigned 32-bit little endian
+ integer. If the size of Filter Properties is zero, the start
+ offset is zero.
+
+ Setting the start offset may be useful if an executable has
+ multiple sections, and there are many cross-section calls.
+ Taking advantage of this feature usually requires usage of
+ the Subblock filter.
+
+
+5. Metadata
+
+ Metadata is stored in Metadata Blocks, which can be in the
+ beginning or at the end of a Multi-Block Stream. Because of
+ Blocks, it is possible to compress Metadata in the same way
+ as the actual data is compressed. This Section describes the
+ format of the data stored in Metadata Blocks.
+
+ +----------------+===============================+
+ | Metadata Flags | Size of Header Metadata Block |
+ +----------------+===============================+
+
+ +============+===================+=======+=======+
+ ---> | Total Size | Uncompressed Size | Index | Extra |
+ +============+===================+=======+=======+
+
+ Stream must be parseable backwards. That is, there must be
+ a way to locate the beginning of the Stream by starting from
+ the end of the Stream. Thus, the Footer Metadata Block must
+ contain the Total Size field or the Index field. If the Stream
+ has Header Metadata Block, also the Size of Header Metadata
+ Block field must be present in Footer Metadata Block.
+
+ It must be possible to quickly locate the Blocks in
+ non-streamed mode. Thus, the Index field must be present
+ at least in one Metadata Block.
+
+ If the above conditions are not met, the decoder must indicate
+ an error.
+
+ There should be no additional data after the last field. If
+ there is, the the decoder should indicate an error.
+
+
+5.1. Metadata Flags
+
+ This field describes which fields are present in a Metadata
+ Block:
+
+ Bit(s) Mask Desription
+ 0 0x01 Size of Header Metadata Block is present.
+ 1 0x02 Total Size is present.
+ 2 0x04 Uncompressed Size is present.
+ 3 0x08 Index is present.
+ 4-6 0x70 Reserve for future use; must be zero for now.
+ 7 0x80 Extra is present.
+
+ If any reserved bit is set, the decoder must indicate an error.
+ It is possible that there is a new field present which the
+ decoder is not aware of, and can thus parse the Metadata
+ incorrectly.
+
+
+5.2. Size of Header Metadata Block
+
+ This field is present only if the appropriate bit is set in
+ the Metadata Flags field (see Section 5.1).
+
+ Size of Header Metadata Block is needed to make it possible to
+ parse the Stream backwards. The size is stored using the
+ encoding described in Section 1.2. The decoder must verify that
+ that the value stored in this field is non-zero. In Footer
+ Metadata Block, the decoder must also verify that the stored
+ size matches the real size of Header Metadata Block. In the
+ Header Meatadata Block, the value of this field is ignored as
+ long as it is not zero.
+
+
+5.3. Total Size
+
+ This field is present only if the appropriate bit is set in the
+ Metadata Flags field (see Section 5.1).
+
+ This field contains the total size of the Data Blocks in the
+ Stream. Total Size is stored using the encoding described in
+ Section 1.2. If the stored value does not match the real total
+ size of the Data Blocks, the decoder must indicate an error.
+ The value of this field must be non-zero.
+
+ Total Size can be used to quickly locate the beginning or end
+ of the Stream. This can be useful for example when doing
+ random-access reading, and the Index field is not in the
+ Metadata Block currently being read.
+
+ It is useless to have both Total Size and Index in the same
+ Metadata Block, because Total Size can be calculated from the
+ Index field.
+
+
+5.4. Uncompressed Size
+
+ This field is present only if the appropriate bit is set in the
+ Metadata Flags field (see Section 5.1).
+
+ This field contains the total uncompressed size of the Data
+ Blocks in the Stream. Uncompresssed Size is stored using the
+ encoding described in Section 1.2. If the stored value does not
+ match the real uncompressed size of the Data Blocks, the
+ decoder must indicate an error.
+
+ It is useless to have both Uncompressed Size and Index in
+ the same Metadata Block, because Uncompressed Size can be
+ calculated from the Index field.
+
+
+5.5. Index
+
+ +=======================+=============+====================+
+ | Number of Data Blocks | Total Sizes | Uncompressed Sizes |
+ +=======================+=============+====================+
+
+ Index serves several purporses. Using it, one can
+ - verify that all Blocks in a Stream have been processed;
+ - find out the Uncompressed Size of a Stream; and
+ - quickly access the beginning of any Block (random access).
+
+
+5.5.1. Number of Data Blocks
+
+ This field contains the number of Data Blocks in the Stream.
+ The value is stored using the encoding described in Section
+ 1.2. If the decoder has decoded all the Data Blocks of the
+ Stream, and then notices that the Number of Records doesn't
+ match the real number of Data Blocks, the decoder must
+ indicate an error. The value of this field must be non-zero.
+
+
+5.5.2. Total Sizes
+
+ +============+============+
+ | Total Size | Total Size | ...
+ +============+============+
+
+ This field lists the Total Sizes of every Data Block in the
+ Stream. There are as many Total Size fields as indicated by
+ the Number of Data Blocks field.
+
+ Total Size is the size of Block Header, Compressed Data, and
+ Block Footer. It is stored using the encoding described in
+ Section 1.2. If the Total Sizes do not match the real sizes
+ of respective Blocks, the decoder should indicate an error.
+ All the Total Size fields must have a non-zero value.
+
+
+5.5.3. Uncompressed Sizes
+
+ +===================+===================+
+ | Uncompressed Size | Uncompressed Size | ...
+ +===================+===================+
+
+ This field lists the Uncompressed Sizes of every Data Block
+ in the Stream. There are as many Uncompressed Size fields as
+ indicated by the Number of Records field.
+
+ Uncompressed Sizes are stored using the encoding described
+ in Section 1.2. If the Uncompressed Sizes do not match the
+ real sizes of respective Blocks, the decoder shoud indicate
+ an error.
+
+
+5.6. Extra
+
+ This field is present only if the appropriate bit is set in the
+ Metadata Flags field (see Section 5.1). Note that the bit does
+ not indicate that there is any data in the Extra field; it only
+ indicates that Extra may be non-empty.
+
+ The Extra field contains only information that is not required
+ to properly uncompress the Stream or to do random-access
+ reading. Supporting the Extra field is optional. In case the
+ decoder doesn't support the Extra field, it should silently
+ ignore it.
+
+ Extra consists of zero or more Records:
+
+ +========+========+
+ | Record | Record | ...
+ +========+========+
+
+ Excluding Records with Record ID 0x00, each Record contains
+ three fields:
+
+ +==========+==============+======+
+ | Reord ID | Size of Data | Data |
+ +==========+==============+======+
+
+ The Record ID and Size of Data are stored using the encoding
+ described in Section 1.2. Data can be binary or UTF-8
+ [RFC-3629] strings. Non-UTF-8 strings should be avoided.
+ Because the Size of Data is known, there is no need to
+ terminate strings with a nul byte, although doing so should
+ not be considered an error.
+
+ The Record IDs are divided in two categories:
+ - Safe-to-Copy Records may be preserved as is when the
+ Stream is modified in ways that don't change the actual
+ uncompressed data. Examples of such operatings include
+ recompressing and adding, modifying, or deleting unrelated
+ Extra Records.
+ - Unsafe-to-Copy Records should be removed (and possibly
+ recreated) when any kind of changes are made to the Stream.
+
+ When the actual uncompressed data is modified, all Records
+ should be removed (and possibly recreated), unless the
+ application knows that the Data stored to the Record(s) is
+ still valid.
+
+ The following subsections describe the standard Record IDs and
+ the format of their Data fields. Safe-to-Copy Records have an
+ odd ID, while Unsafe-to-Copy Records have an even ID.
+
+
+5.6.1. 0x00: Dummy/Padding
+
+ This Record is special, because it doesn't have the Size of
+ Data or Data fields.
+
+ Dummy Records can be used, for example, to fill Metadata Block
+ when a few bytes of extra space has been reserved for it. There
+ can be any number of Dummy Records.
+
+
+5.6.2. 0x01: OpenPGP Signature
+
+ OpenPGP signature is computed from uncompressed data. The
+ signature can be used to verify that the contents of a Stream
+ has been created by a trustworthy source.
+
+ If the decoder supports decoding concatenated Streams, it
+ must indicate an error when verifying OpenPGP signatures if
+ there is more than one Stream.
+
+ OpenPGP format is documented in [RFC-2440].
+
+
+5.6.3. 0x02: Filter Information
+
+ The Filter Information Record contains information about the
+ filters used in the Stream. This field can be used to quickly
+ - display which filters are used in each Block;
+ - check if all the required filters are supported by the
+ current decoder version; and
+ - check how much memory is required to decode each Block.
+
+ The format of the Filter Information field is as follows:
+
+ +=================+=================+
+ | Block 0 Filters | Block 1 Filters | ...
+ +=================+=================+
+
+ There can be at maximum of as many Block Filters fields as
+ there are Data Blocks in the Stream. The format of the Block
+ Filters field is as follows:
+
+ +------------------+======================+============+
+ | Block Properties | List of Filter Flags | Subfilters |
+ +------------------+======================+============+
+
+ Block Properties is a bitfield:
+
+ Bit(s) Mask Description
+ 0-2 0x07 Number of filters (0-7)
+ 3 0x08 End of Payload Marker is used.
+ 4 0x10 The Subfilters field is present.
+ 5-7 0xE0 Reserved for future use; must be zero for now.
+
+ The contents of the List of Filter Flags field must match the
+ List of Filter Flags field in the respective Block Header.
+
+ The Subfilters field may be present only if the List of Filter
+ Flags contains a Filter Flags field for a Subblock filter. The
+ format of the Subfilters field is as follows:
+
+ +======================+=========================+
+ | Number of Subfilters | List of Subfilter Flags |
+ +======================+=========================+
+
+ The value stored in the Number of Subfilters field is stored
+ using the encoding described in Section 1.2. The List of
+ Subfilter Flags field contains as many Filter Flags fields
+ as indicated by the Number of Subfilters field. These Filter
+ Flags fields list some or all the Subfilters used via the
+ Subblock filter. The order of the listed Subfilters is not
+ significant.
+
+ Decoders supporting this Record should indicate a warning or
+ error if this Record contains Filter Flags that are not
+ actually used by the respective Blocks.
+
+
+5.6.4. 0x03: Comment
+
+ Free-form comment is stored in UTF-8 [RFC-3629] encoding.
+
+ The beginning of a new line should be indicated using the
+ ASCII Line Feed character (0x0A). When the Line Feed character
+ is not the native way to indicate new line in the underlying
+ operating system, the encoder and decoder should convert the
+ newline characters to and from Line Feeds.
+
+
+5.6.5. 0x04: List of Checks
+
+ +=======+=======+
+ | Check | Check | ...
+ +=======+=======+
+
+ There are as many Check fields as there are Blocks in the
+ Stream. The size of Check fields depend on Stream Flags
+ (see Section 2.2.2).
+
+ Decoders supporting this Record should indicate a warning or
+ error if the Checks don't match the respective Blocks.
+
+
+5.6.6. 0x05: Original Filename
+
+ Original filename is stored in UTF-8 [RFC-3629] encoding.
+
+ The filename must not include any path, only the filename
+ itself. Special care must be taken to prevent directory
+ traversal vulnerabilities.
+
+ When files are moved between different operating systems, it
+ is possible that filename valid in the source system is not
+ valid in the target system. It is implementation defined how
+ the decoder handles this kind of situations.
+
+
+5.6.7. 0x07: Modification Time
+
+ Modification time is stored as POSIX time, as an unsigned
+ little endian integer. The number of bits depends on the
+ Size of Data field. Note that the usage of unsigned integer
+ limits the earliest representable time to 1970-01-01T00:00:00.
+
+
+5.6.8. 0x09: High-Resolution Modification Time
+
+ This Record extends the `0x04: Modification time' Record with
+ a subsecond time information. There are two supported formats
+ of this field, which can be distinguished by looking at the
+ Size of Data field.
+
+ Size Data
+ 3 [0; 9,999,999] times 100 nanoseconds
+ 4 [0; 999,999,999] nanoseconds
+
+ The value is stored as an unsigned 24-bit or 32-bit little
+ endian integer.
+
+
+5.6.9. 0x0B: MIME Type
+
+ MIME type of the uncompressed Stream. This can be used to
+ detect the content type. [IANA-MIME]
+
+
+5.6.10. 0x0D: Homepage URL
+
+ This field can be used, for example, when distributing software
+ packages (sources or binaries). The field would indicate the
+ homepage of the program.
+
+ For details on how to encode URLs, see [RFC-1738].
+
+
+6. Custom Filter and Extra Record IDs
+
+ If a developer wants to use custom Filter or Extra Record IDs,
+ he has two choices. The first choice is to contact Lasse Collin
+ and ask him to allocate a range of IDs for the developer.
+
+ The second choice is to generate a 40-bit random integer,
+ which the developer can use as his personal Developer ID.
+ To minimalize the risk of collisions, Developer ID has to be
+ a randomly generated integer, not manually selected "hex word".
+ The following command, which works on many free operating
+ systems, can be used to generate Developer ID:
+
+ dd if=/dev/urandom bs=5 count=1 | hexdump
+
+ The developer can then use his Developer ID to create unique
+ (well, hopefully unique) Filter and Extra Record IDs.
+
+ Bits Mask Description
+ 0-15 0x0000_0000_0000_FFFF Filter or Extra Record ID
+ 16-55 0x00FF_FFFF_FFFF_0000 Developer ID
+ 56-62 0x7F00_0000_0000_0000 Static prefix: 0x7F
+
+ The resulting 63-bit integer will use 9 bytes of space when
+ stored using the encoding described in Section 1.2. To get
+ a shorter ID, see the beginning of this Section how to
+ request a custom ID range.
+
+ Note that Filter and Metadata Record IDs are in their own
+ namespaces. That is, you can use the same ID value as Filter ID
+ and Metadata Record ID, and the meanings of the IDs do not need
+ to be related to each other.
+
+
+6.1. Reserved Custom Filter ID Ranges
+
+ Range Description
+ 0x0000_0000 - 0x0000_00DF IDs fitting into the Misc field
+ 0x0002_0000 - 0x0007_FFFF Reserved to ease .7z compatibility
+ 0x0200_0000 - 0x07FF_FFFF Reserved to ease .7z compatibility
+
+
+7. Cyclic Redundancy Checks
+
+ There are several incompatible variations to calculate CRC32
+ and CRC64. For simplicity and clarity, complete examples are
+ provided to calculate the checks as they are used in this file
+ format. Implementations may use different code as long as it
+ gives identical results.
+
+ The program below reads data from standard input, calculates
+ the CRC32 and CRC64 values, and prints the calculated values
+ as big endian hexadecimal strings to standard output.
+
+ #include <sys/types.h>
+ #include <inttypes.h>
+ #include <stdio.h>
+
+ uint32_t crc32_table[256];
+ uint64_t crc64_table[256];
+
+ void
+ init(void)
+ {
+ static const uint32_t poly32 = UINT32_C(0xEDB88320);
+ static const uint64_t poly64
+ = UINT64_C(0xC96C5795D7870F42);
+
+ for (size_t i = 0; i < 256; ++i) {
+ uint32_t crc32 = i;
+ uint64_t crc64 = i;
+
+ for (size_t j = 0; j < 8; ++j) {
+ if (crc32 & 1)
+ crc32 = (crc32 >> 1) ^ poly32;
+ else
+ crc32 >>= 1;
+
+ if (crc64 & 1)
+ crc64 = (crc64 >> 1) ^ poly64;
+ else
+ crc64 >>= 1;
+ }
+
+ crc32_table[i] = crc32;
+ crc64_table[i] = crc64;
+ }
+ }
+
+ uint32_t
+ crc32(const uint8_t *buf, size_t size, uint32_t crc)
+ {
+ crc = ~crc;
+ for (size_t i = 0; i < size; ++i)
+ crc = crc32_table[buf[i] ^ (crc & 0xFF)]
+ ^ (crc >> 8);
+ return ~crc;
+ }
+
+ uint64_t
+ crc64(const uint8_t *buf, size_t size, uint64_t crc)
+ {
+ crc = ~crc;
+ for (size_t i = 0; i < size; ++i)
+ crc = crc64_table[buf[i] ^ (crc & 0xFF)]
+ ^ (crc >> 8);
+ return ~crc;
+ }
+
+ int
+ main()
+ {
+ init();
+
+ uint32_t value32 = 0;
+ uint64_t value64 = 0;
+ uint64_t total_size = 0;
+ uint8_t buf[8192];
+
+ while (1) {
+ const size_t buf_size = fread(buf, 1, 8192, stdin);
+ if (buf_size == 0)
+ break;
+
+ total_size += buf_size;
+ value32 = crc32(buf, buf_size, value32);
+ value64 = crc64(buf, buf_size, value64);
+ }
+
+ printf("Bytes: %" PRIu64 "\n", total_size);
+ printf("CRC-32: 0x%08" PRIX32 "\n", value32);
+ printf("CRC-64: 0x%016" PRIX64 "\n", value64);
+
+ return 0;
+ }
+
+
+8. References
+
+8.1. Normative References
+
+ [RFC-1738]
+ Uniform Resource Locators (URL)
+ http://www.ietf.org/rfc/rfc1738.txt
+
+ [RFC-2119]
+ Key words for use in RFCs to Indicate Requirement Levels
+ http://www.ietf.org/rfc/rfc2119.txt
+
+ [RFC-2440]
+ OpenPGP Message Format
+ http://www.ietf.org/rfc/rfc2440.txt
+
+ [RFC-3629]
+ UTF-8, a transformation format of ISO 10646
+ http://www.ietf.org/rfc/rfc3629.txt
+
+ [IANA-MIME]
+ MIME Media Types
+ http://www.iana.org/assignments/media-types/
+
+
+8.2. Informative References
+
+ LZMA SDK - The original LZMA implementation
+ http://7-zip.org/sdk.html
+
+ LZMA Utils - LZMA adapted to POSIX-like systems
+ http://tukaani.org/lzma/
+
+ [RFC-1952]
+ GZIP file format specification version 4.3
+ http://www.ietf.org/rfc/rfc1952.txt
+ - Notation of byte boxes in section `2.1. Overall conventions'
+
+ [GNU-tar]
+ GNU tar 1.16.1 manual
+ http://www.gnu.org/software/tar/manual/html_node/Blocking-Factor.html
+ - Node 9.4.2 `Blocking Factor', paragraph that begins
+ `gzip will complain about trailing garbage'
+ - Note that this URL points to the latest version of the
+ manual, and may some day not contain the note which is in
+ 1.16.1. For the exact version of the manual, download GNU
+ tar 1.16.1: ftp://ftp.gnu.org/pub/gnu/tar/tar-1.16.1.tar.gz
+
diff --git a/doc/history.txt b/doc/history.txt
new file mode 100644
index 0000000..5529306
--- /dev/null
+++ b/doc/history.txt
@@ -0,0 +1,140 @@
+
+LZMA Utils history
+------------------
+
+Tukaani distribution
+
+ In 2005, there was a small group working on Tukaani distribution, which
+ was a Slackware fork. One of the project goals was to fit the distro on
+ a single 700 MiB ISO-9660 image. Using LZMA instead of gzip helped a
+ lot. Roughly speaking, one could fit data that took 1000 MiB in gzipped
+ form into 700 MiB with LZMA. Naturally compression ratio varied across
+ packages, but this was what we got on average.
+
+ Slackware packages have traditionally had .tgz as the filename suffix,
+ which is an abbreviation of .tar.gz. A logical naming for LZMA
+ compressed packages was .tlz, being an abbreviation of .tar.lzma.
+
+ At the end of the year 2007, there's no distribution under the Tukaani
+ project anymore. Development of LZMA Utils still continues. Still,
+ there are .tlz packages around, because at least Vector Linux (a
+ Slackware based distribution) uses LZMA for its packages.
+
+ First versions of the modified pkgtools used the LZMA_Alone tool from
+ Igor Pavlov's LZMA SDK as is. It was fine, because users wouldn't need
+ to interact with LZMA_Alone directly. But people soon wanted to use
+ LZMA for other files too, and the interface of LZMA_Alone wasn't
+ comfortable for those used to gzip and bzip2.
+
+
+First steps of LZMA Utils
+
+ The first version of LZMA Utils (4.22.0) included a shell script called
+ lzmash. It was wrapper that had gzip-like command line interface. It
+ used the LZMA_Alone tool from LZMA SDK to do all the real work. zgrep,
+ zdiff, and related scripts from gzip were adapted work with LZMA and
+ were part of the first LZMA Utils release too.
+
+ LZMA Utils 4.22.0 included also lzmadec, which was a small (less than
+ 10 KiB) decoder-only command line tool. It was written on top of the
+ decoder-only C code found from the LZMA SDK. lzmadec was convenient in
+ situations where LZMA_Alone (a few hundred KiB) would be too big.
+
+ lzmash and lzmadec were written by Lasse Collin.
+
+
+Second generation
+
+ The lzmash script was an ugly and not very secure hack. The last
+ version of LZMA Utils to use lzmash was 4.27.1.
+
+ LZMA Utils 4.32.0beta1 introduced a new lzma command line tool written
+ by Ville Koskinen. It was written in C++, and used the encoder and
+ decoder from C++ LZMA SDK with little modifications. This tool replaced
+ both the lzmash script and the LZMA_Alone command line tool in LZMA
+ Utils.
+
+ Introducing this new tool caused some temporary incompatibilities,
+ because LZMA_Alone executable was simply named lzma like the new
+ command line tool, but they had completely different command line
+ interface. The file format was still the same.
+
+ Lasse wrote liblzmadec, which was a small decoder-only library based on
+ the C code found from LZMA SDK. liblzmadec had API similar to zlib,
+ although there were some significant differences, which made it
+ non-trivial to use it in some applications designed for zlib and
+ libbzip2.
+
+ The lzmadec command line tool was converted to use liblzmadec.
+
+ Alexandre Sauvé helped converting build system to use GNU Autotools.
+ This made is easier to test for certain less portable features needed
+ by the new command line tool.
+
+ Since the new command line tool never got completely finished (for
+ example, it didn't support LZMA_OPT environment variable), the intent
+ was to not call 4.32.x stable. Similarly, liblzmadec wasn't polished,
+ but appeared to work well enough, so some people started using it too.
+
+ Because the development of the third generation of LZMA Utils was
+ delayed considerably (roughly two years), the 4.32.x branch had to be
+ kept maintained. It got some bug fixes now and then, and finally it was
+ decided to call it stable, although most of the missing features were
+ never added.
+
+
+File format problems
+
+ The file format used by LZMA_Alone was primitive. It was designed for
+ embedded systems in mind, and thus provided only minimal set of
+ features. The two biggest problems for non-embedded use were lack of
+ magic bytes and integrity check.
+
+ Igor and Lasse started developing a new file format with some help from
+ Ville Koskinen, Mark Adler and Mikko Pouru. Designing the new format
+ took quite a long time. It was mostly because Lasse was quite slow at
+ getting things done due to personal reasons.
+
+ Near the end of the year 2007 the new format was practically finished.
+ Compared to LZMA_Alone format and the .gz format used by gzip, the new
+ .lzma format is quite complex as a whole. This means that tools having
+ *full* support for the new format would be larger and more complex than
+ the tools supporting only the old LZMA_Alone format.
+
+ For the situations where the full support for the .lzma format wouldn't
+ be required (embedded systems, operating system kernels), the new
+ format has a well-defined subset, which is easy to support with small
+ amount of code. It wouldn't be as small as an implementation using the
+ LZMA_Alone format, but the difference shouldn't be significant.
+
+ The new .lzma format allows dividing the data in multiple independent
+ blocks, which can be compressed and uncompressed independenly. This
+ makes multi-threading possible with algorithms that aren't inherently
+ parallel (such as LZMA). There's also a central index of the sizes of
+ the blocks, which makes it possible to do limited random-access reading
+ with granularity of the block size.
+
+ The new .lzma format uses the same filename suffix that was used for
+ LZMA_Alone files. The advantage is that users using the new tools won't
+ notice the change to the new format. The disadvantage is that the old
+ tools won't work with the new files.
+
+
+Third generation
+
+ LZMA Utils 4.42.0alphas drop the rest of the C++ LZMA SDK. The LZMA and
+ other included filters (algorithm implementations) are still directly
+ based on LZMA SDK, but ported to C.
+
+ liblzma is now the core of LZMA Utils. It has zlib-like API, which
+ doesn't suffer from the problems of the API of liblzmadec. liblzma
+ supports not only LZMA, but several other filters, which together
+ can improve compression ratio even further with certain file types.
+
+ The lzma and lzmadec command line tools have been rewritten. They uses
+ liblzma to do the actual compressing or uncompressing.
+
+ The development of LZMA Utils 4.42.x is still in alpha stage. Several
+ features are still missing or don't fully work yet. Documentation is
+ also very minimal.
+
diff --git a/doc/liblzma-advanced.txt b/doc/liblzma-advanced.txt
new file mode 100644
index 0000000..d829a33
--- /dev/null
+++ b/doc/liblzma-advanced.txt
@@ -0,0 +1,324 @@
+
+Advanced features of liblzma
+----------------------------
+
+0. Introduction
+
+ Most developers need only the basic features of liblzma. These
+ features allow single-threaded encoding and decoding of .lzma files
+ in streamed mode.
+
+ In some cases developers want more. The .lzma file format is
+ designed to allow multi-threaded encoding and decoding and limited
+ random-access reading. These features are possible in non-streamed
+ mode and limitedly also in streamed mode.
+
+ To take advange of these features, the application needs a custom
+ .lzma file format handler. liblzma provides a set of tools to ease
+ this task, but it's still quite a bit of work to get a good custom
+ .lzma handler done.
+
+
+1. Where to begin
+
+ Start by reading the .lzma file format specification. Understanding
+ the basics of the .lzma file structure is required to implement a
+ custom .lzma file handler and to understand the rest of this document.
+
+
+2. The basic components
+
+2.1. Stream Header and tail
+
+ Stream Header begins the .lzma Stream and Stream tail ends it. Stream
+ Header is defined in the file format specification, but Stream tail
+ isn't (thus I write "tail" with a lower-case letter). Stream tail is
+ simply the Stream Flags and the Footer Magic Bytes fields together.
+ It was done this way in liblzma, because the Block coders take care
+ of the rest of the stuff in the Stream Footer.
+
+ For now, the size of Stream Header is fixed to 11 bytes. The header
+ <lzma/stream_flags.h> defines LZMA_STREAM_HEADER_SIZE, which you
+ should use instead of a hardcoded number. Similarly, Stream tail
+ is fixed to 3 bytes, and there is a constant LZMA_STREAM_TAIL_SIZE.
+
+ It is possible, that a future version of the .lzma format will have
+ variable-sized Stream Header and tail. As of writing, this seems so
+ unlikely though, that it was considered simplest to just use a
+ constant instead of providing a functions to get and store the sizes
+ of the Stream Header and tail.
+
+
+2.x. Stream tail
+
+ For now, the size of Stream tail is fixed to 3 bytes. The header
+ <lzma/stream_flags.h> defines LZMA_STREAM_TAIL_SIZE, which you
+ should use instead of a hardcoded number.
+
+
+3. Keeping track of size information
+
+ The lzma_info_* functions found from <lzma/info.h> should ease the
+ task of keeping track of sizes of the Blocks and also the Stream
+ as a whole. Using these functions is strongly recommended, because
+ there are surprisingly many situations where an error can occur,
+ and these functions check for possible errors every time some new
+ information becomes available.
+
+ If you find lzma_info_* functions lacking something that you would
+ find useful, please contact the author.
+
+
+3.1. Start offset of the Stream
+
+ If you are storing the .lzma Stream inside anothe file format, or
+ for some other reason are placing the .lzma Stream to somewhere
+ else than to the beginning of the file, you should tell the starting
+ offset of the Stream using lzma_info_start_offset_set().
+
+ The start offset of the Stream is used for two distinct purporses.
+ First, knowing the start offset of the Stream allows
+ lzma_info_alignment_get() to correctly calculate the alignment of
+ every Block. This information is given to the Block encoder, which
+ will calculate the size of Header Padding so that Compressed Data
+ is alignment at an optimal offset.
+
+ Another use for start offset of the Stream is in random-access
+ reading. If you set the start offset of the Stream, lzma_info_locate()
+ will be able to calculate the offset relative to the beginning of the
+ file containing the Stream (instead of offset relative to the
+ beginning of the Stream).
+
+
+3.2. Size of Stream Header
+
+ While the size of Stream Header is constant (11 bytes) in the current
+ version of the .lzma file format, this may change in future.
+
+
+3.3. Size of Header Metadata Block
+
+ This information is needed when doing random-access reading, and
+ to verify the value of this field stored in Footer Metadata Block.
+
+
+3.4. Total Size of the Data Blocks
+
+
+3.5. Uncompressed Size of Data Blocks
+
+
+3.6. Index
+
+
+
+
+x. Alignment
+
+ There are a few slightly different types of alignment issues when
+ working with .lzma files.
+
+ The .lzma format doesn't strictly require any kind of alignment.
+ However, if the encoder carefully optimizes the alignment in all
+ situations, it can improve compression ratio, speed of the encoder
+ and decoder, and slightly help if the files get damaged and need
+ recovery.
+
+ Alignment has the most significant effect compression ratio FIXME
+
+
+x.1. Compression ratio
+
+ Some filters take advantage of the alignment of the input data.
+ To get the best compression ratio, make sure that you feed these
+ filters correctly aligned data.
+
+ Some filters (e.g. LZMA) don't necessarily mind too much if the
+ input doesn't match the preferred alignment. With these filters
+ the penalty in compression ratio depends on the specific type of
+ data being compressed.
+
+ Other filters (e.g. PowerPC executable filter) won't work at all
+ with data that is improperly aligned. While the data can still
+ be de-filtered back to its original form, the benefit of the
+ filtering (better compression ratio) is completely lost, because
+ these filters expect certain patterns at properly aligned offsets.
+ The compression ratio may even worse with incorrectly aligned input
+ than without the filter.
+
+
+x.1.1. Inter-filter alignment
+
+ When there are multiple filters chained, checking the alignment can
+ be useful not only with the input of the first filter and output of
+ the last filter, but also between the filters.
+
+ Inter-filter alignment important especially with the Subblock filter.
+
+
+x.1.2. Further compression with external tools
+
+ This is relatively rare situation in practice, but still worth
+ understanding.
+
+ Let's say that there are several SPARC executables, which are each
+ filtered to separate .lzma files using only the SPARC filter. If
+ Uncompressed Size is written to the Block Header, the size of Block
+ Header may vary between the .lzma files. If no Padding is used in
+ the Block Header to correct the alignment, the starting offset of
+ the Compressed Data field will be differently aligned in different
+ .lzma files.
+
+ All these .lzma files are archived into a single .tar archive. Due
+ to nature of the .tar format, every file is aligned inside the
+ archive to an offset that is a multiple of 512 bytes.
+
+ The .tar archive is compressed into a new .lzma file using the LZMA
+ filter with options, that prefer input alignment of four bytes. Now
+ if the independent .lzma files don't have the same alignment of
+ the Compressed Data fields, the LZMA filter will be unable to take
+ advantage of the input alignment between the files in the .tar
+ archive, which reduces compression ratio.
+
+ Thus, even if you have only single Block per file, it can be good for
+ compression ratio to align the Compressed Data to optimal offset.
+
+
+x.2. Speed
+
+ Most modern computers are faster when multi-byte data is located
+ at aligned offsets in RAM. Proper alignment of the Compressed Data
+ fields can slightly increase the speed of some filters.
+
+
+x.3. Recovery
+
+ Aligning every Block Header to start at an offset with big enough
+ alignment may ease or at least speed up recovery of broken files.
+
+
+y. Typical usage cases
+
+y.x. Parsing the Stream backwards
+
+ You may need to parse the Stream backwards if you need to get
+ information such as the sizes of the Stream, Index, or Extra.
+ The basic procedure to do this follows.
+
+ Locate the end of the Stream. If the Stream is stored as is in a
+ standalone .lzma file, simply seek to the end of the file and start
+ reading backwards using appropriate buffer size. The file format
+ specification allows arbitrary amount of Footer Padding (zero or more
+ NUL bytes), which you skip before trying to decode the Stream tail.
+
+ Once you have located the end of the Stream (a non-NULL byte), make
+ sure you have at least the last LZMA_STREAM_TAIL_SIZE bytes of the
+ Stream in a buffer. If there isn't enough bytes left from the file,
+ the file is too small to contain a valid Stream. Decode the Stream
+ tail using lzma_stream_tail_decoder(). Store the offset of the first
+ byte of the Stream tail; you will need it later.
+
+ You may now want to do some internal verifications e.g. if the Check
+ type is supported by the liblzma build you are using.
+
+ Decode the Backward Size field with lzma_vli_reverse_decode(). The
+ field is at maximum of LZMA_VLI_BYTES_MAX bytes long. Check that
+ Backward Size is not zero. Store the offset of the first byte of
+ the Backward Size; you will need it later.
+
+ Now you know the Total Size of the last Block of the Stream. It's the
+ value of Backward Size plus the size of the Backward Size field. Note
+ that you cannot use lzma_vli_size() to calculate the size since there
+ might be padding; you need to use the real observed size of the
+ Backward Size field.
+
+ At this point, the operation continues differently for Single-Block
+ and Multi-Block Streams.
+
+
+y.x.1. Single-Block Stream
+
+ There might be Uncompressed Size field present in the Stream Footer.
+ You cannot know it for sure unless you have already parsed the Block
+ Header earlier. For security reasons, you probably want to try to
+ decode the Uncompressed Size field, but you must not indicate any
+ error if decoding fails. Later you can give the decoded Uncompressed
+ Size to Block decoder if Uncopmressed Size isn't otherwise known;
+ this prevents it from producing too much output in case of (possibly
+ intentionally) corrupt file.
+
+ Calculate the the start offset of the Stream:
+
+ backward_offset - backward_size - LZMA_STREAM_HEADER_SIZE
+
+ backward_offset is the offset of the first byte of the Backward Size
+ field. Remember to check for integer overflows, which can occur with
+ invalid input files.
+
+ Seek to the beginning of the Stream. Decode the Stream Header using
+ lzma_stream_header_decoder(). Verify that the decoded Stream Flags
+ match the values found from Stream tail. You can use the
+ lzma_stream_flags_is_equal() macro for this.
+
+ Decode the Block Header. Verify that it isn't a Metadata Block, since
+ Single-Block Streams cannot have Metadata. If Uncompressed Size is
+ present in the Block Header, the value you tried to decode from the
+ Stream Footer must be ignored, since Uncompressed Size wasn't actually
+ present there. If Block Header doesn't have Uncompressed Size, and
+ decoding the Uncompressed Size field from the Stream Footer failed,
+ the file is corrupt.
+
+ If you were only looking for the Uncompressed Size of the Stream,
+ you now got that information, and you can stop processing the Stream.
+
+ To decode the Block, the same instructions apply as described in
+ FIXME. However, because you have some extra known information decoded
+ from the Stream Footer, you should give this information to the Block
+ decoder so that it can verify it while decoding:
+ - If Uncompressed Size is not present in the Block Header, set
+ lzma_options_block.uncompressed_size to the value you decoded
+ from the Stream Footer.
+ - Always set lzma_options_block.total_size to backward_size +
+ size_of_backward_size (you calculated this sum earlier already).
+
+
+y.x.2. Multi-Block Stream
+
+ Calculate the start offset of the Footer Metadata Block:
+
+ backward_offset - backward_size
+
+ backward_offset is the offset of the first byte of the Backward Size
+ field. Remember to check for integer overflows, which can occur with
+ broken input files.
+
+ Decode the Block Header. Verify that it is a Metadata Block. Set
+ lzma_options_block.total_size to backward_size + size_of_backward_size
+ (you calculated this sum earlier already). Then decode the Footer
+ Metadata Block.
+
+ Store the decoded Footer Metadata to lzma_info structure using
+ lzma_info_set_metadata(). Set also the offset of the Backward Size
+ field using lzma_info_size_set(). Then you can get the start offset
+ of the Stream using lzma_info_size_get(). Note that any of these steps
+ may fail so don't omit error checking.
+
+ Seek to the beginning of the Stream. Decode the Stream Header using
+ lzma_stream_header_decoder(). Verify that the decoded Stream Flags
+ match the values found from Stream tail. You can use the
+ lzma_stream_flags_is_equal() macro for this.
+
+ If you were only looking for the Uncompressed Size of the Stream,
+ it's possible that you already have it now. If Uncompressed Size (or
+ whatever information you were looking for) isn't available yet,
+ continue by decoding also the Header Metadata Block. (If some
+ information is missing, the Header Metadata Block has to be present.)
+
+ Decoding the Data Blocks goes the same way as described in FIXME.
+
+
+y.x.3. Variations
+
+ If you know the offset of the beginning of the Stream, you may want
+ to parse the Stream Header before parsing the Stream tail.
+
diff --git a/doc/liblzma-hacking.txt b/doc/liblzma-hacking.txt
new file mode 100644
index 0000000..64390bc
--- /dev/null
+++ b/doc/liblzma-hacking.txt
@@ -0,0 +1,112 @@
+
+Hacking liblzma
+---------------
+
+0. Preface
+
+ This document gives some overall information about the internals of
+ liblzma, which should make it easier to start reading and modifying
+ the code.
+
+
+1. Programming language
+
+ liblzma was written in C99. If you use GCC, this means that you need
+ at least GCC 3.x.x. GCC 2 isn't and won't be supported.
+
+ Some GCC-specific extensions are used *conditionally*. They aren't
+ required to build a full-featured library. Don't make the code rely
+ on any non-standard compiler extensions or even C99 features that
+ aren't portable between almost-C99 compatible compilers (for example
+ non-static inlines).
+
+ The public API headers are in C89. This is to avoid frustrating those
+ who maintain programs, which are strictly in C89 or C++.
+
+ An assumption about sizeof(size_t) is made. If this assumption is
+ wrong, some porting is probably needed:
+
+ sizeof(uint32_t) <= sizeof(size_t) <= sizeof(uint64_t)
+
+
+2. Internal vs. external API
+
+
+
+ Input Output
+ v Application ^
+ | liblzma public API |
+ | Stream coder |
+ | Block coder |
+ | Filter coder |
+ | ... |
+ v Filter coder ^
+
+
+ Application
+ `-- liblzma public API
+ `-- Stream coder
+ |-- Stream info handler
+ |-- Stream Header coder
+ |-- Block Header coder
+ | `-- Filter Flags coder
+ |-- Metadata coder
+ | `-- Block coder
+ | `-- Filter 0
+ | `-- Filter 1
+ | ...
+ |-- Data Block coder
+ | `-- Filter 0
+ | `-- Filter 1
+ | ...
+ `-- Stream tail coder
+
+
+
+x. Designing new filters
+
+ All filters must be designed so that the decoder cannot consume
+ arbitrary amount input without producing any decoded output. Failing
+ to follow this rule makes liblzma vulnerable to DoS attacks if
+ untrusted files are decoded (usually they are untrusted).
+
+ An example should clarify the reason behind this requirement: There
+ are two filters in the chain. The decoder of the first filter produces
+ huge amount of output (many gigabytes or more) with a few bytes of
+ input, which gets passed to the decoder of the second filter. If the
+ data passed to the second filter is interpreted as something that
+ produces no output (e.g. padding), the filter chain as a whole
+ produces no output and consumes no input for a long period of time.
+
+ The above problem was present in the first versions of the Subblock
+ filter. A tiny .lzma file could have taken several years to decode
+ while it wouldn't produce any output at all. The problem was fixed
+ by adding limits for number of consecutive Padding bytes, and requiring
+ that some decoded output must be produced between Set Subfilter and
+ Unset Subfilter.
+
+
+x. Implementing new filters
+
+ If the filter supports embedding End of Payload Marker, make sure that
+ when your filter detects End of Payload Marker,
+ - the usage of End of Payload Marker is actually allowed (i.e. End
+ of Input isn't used); and
+ - it also checks that there is no more input coming from the next
+ filter in the chain.
+
+ The second requirement is slightly tricky. It's possible that the next
+ filter hasn't returned LZMA_STREAM_END yet. It may even need a few
+ bytes more input before it will do so. You need to give it as much
+ input as it needs, and verify that it doesn't produce any output.
+
+ Don't call the next filter in the chain after it has returned
+ LZMA_STREAM_END (except in encoder if action == LZMA_SYNC_FLUSH).
+ It will result undefined behavior.
+
+ Be pedantic. If the input data isn't exactly valid, reject it.
+
+ At the moment, liblzma isn't modular. You will need to edit several
+ files in src/liblzma/common to include support for a new filter. grep
+ for LZMA_FILTER_LZMA to locate the files needing changes.
+
diff --git a/doc/liblzma-intro.txt b/doc/liblzma-intro.txt
new file mode 100644
index 0000000..9cbd63a
--- /dev/null
+++ b/doc/liblzma-intro.txt
@@ -0,0 +1,188 @@
+
+Introduction to liblzma
+-----------------------
+
+Writing applications to work with liblzma
+
+ liblzma API is split in several subheaders to improve readability and
+ maintainance. The subheaders must not be #included directly; simply
+ use `#include <lzma.h>' instead.
+
+ Those who have used zlib should find liblzma's API easy to use.
+ To developers who haven't used zlib before, I recommend learning
+ zlib first, because zlib has excellent documentation.
+
+ While the API is similar to that of zlib, there are some major
+ differences, which are summarized below.
+
+ For basic stream encoding, zlib has three functions (deflateInit(),
+ deflate(), and deflateEnd()). Similarly, there are three functions
+ for stream decoding (inflateInit(), inflate(), and inflateEnd()).
+ liblzma has only single coding and ending function. Thus, to
+ encode one may use, for example, lzma_stream_encoder_single(),
+ lzma_code(), and lzma_end(). Simlarly for decoding, one may
+ use lzma_auto_decoder(), lzma_code(), and lzma_end().
+
+ zlib has deflateReset() and inflateReset() to reset the stream
+ structure without reallocating all the memory. In liblzma, all
+ coder initialization functions are like zlib's reset functions:
+ the first-time initializations are done with the same functions
+ as the reinitializations (resetting).
+
+ To make all this work, liblzma needs to know when lzma_stream
+ doesn't already point to an allocated and initialized coder.
+ This is achieved by initializing lzma_stream structure with
+ LZMA_STREAM_INIT (static initialization) or LZMA_STREAM_INIT_VAR
+ (for exampple when new lzma_stream has been allocated with malloc()).
+ This initialization should be done exactly once per lzma_stream
+ structure to avoid leaking memory. Calling lzma_end() will leave
+ lzma_stream into a state comparable to the state achieved with
+ LZMA_STREAM_INIT and LZMA_STREAM_INIT_VAR.
+
+ Example probably clarifies a lot. With zlib, compression goes
+ roughly like this:
+
+ z_stream strm;
+ deflateInit(&strm, level);
+ deflate(&strm, Z_RUN);
+ deflate(&strm, Z_RUN);
+ ...
+ deflate(&strm, Z_FINISH);
+ deflateEnd(&strm) or deflateReset(&strm)
+
+ With liblzma, it's slightly different:
+
+ lzma_stream strm = LZMA_STREAM_INIT;
+ lzma_stream_encoder_single(&strm, &options);
+ lzma_code(&strm, LZMA_RUN);
+ lzma_code(&strm, LZMA_RUN);
+ ...
+ lzma_code(&strm, LZMA_FINISH);
+ lzma_end(&strm) or reinitialize for new coding work
+
+ Reinitialization in the last step can be any function that can
+ initialize lzma_stream; it doesn't need to be the same function
+ that was used for the previous initialization. If it is the same
+ function, liblzma will usually be able to re-use most of the
+ existing memory allocations (depends on how much the initialization
+ options change). If you reinitialize with different function,
+ liblzma will automatically free the memory of the previous coder.
+
+
+File formats
+
+ liblzma supports multiple container formats for the compressed data.
+ Different initialization functions initialize the lzma_stream to
+ process different container formats. See the details from the public
+ header files.
+
+ The following functions are the most commonly used:
+
+ - lzma_stream_encoder_single(): Encodes Single-Block Stream; this
+ the recommended format for most purporses.
+
+ - lzma_alone_encoder(): Useful if you need to encode into the
+ legacy LZMA_Alone format.
+
+ - lzma_auto_decoder(): Decoder that automatically detects the
+ file format; recommended when you decode compressed files on
+ disk, because this way compatibility with the legacy LZMA_Alone
+ format is transparent.
+
+ - lzma_stream_decoder(): Decoder for Single- and Multi-Block
+ Streams; this is good if you want to accept only .lzma Streams.
+
+
+Filters
+
+ liblzma supports multiple filters (algorithm implementations). The new
+ .lzma format supports filter-chain having up to seven filters. In the
+ filter chain, the output of one filter is input of the next filter in
+ the chain. The legacy LZMA_Alone format supports only one filter, and
+ that must always be LZMA.
+
+ General-purporse compression:
+
+ LZMA The main algorithm of liblzma (surprise!)
+
+ Branch/Call/Jump filters for executables:
+
+ x86 This filter is known as BCJ in 7-Zip
+ IA64 IA-64 (Itanium)
+ PowerPC Big endian PowerPC
+ ARM
+ ARM-Thumb
+ SPARC
+
+ Other filters:
+
+ Copy Dummy filter that simply copies all the data
+ from input to output.
+
+ Subblock Multi-purporse filter, that can
+ - embed End of Payload Marker if the previous
+ filter in the chain doesn't support it; and
+ - apply Subfilters, which filter only part
+ of the same compressed Block in the Stream.
+
+ Branch/Call/Jump filters never change the size of the data. They
+ should usually be used as a pre-filter for some compression filter
+ like LZMA.
+
+
+Integrity checks
+
+ The .lzma Stream format uses CRC32 as the integrity check for
+ different file format headers. It is possible to omit CRC32 from
+ the Block Headers, but not from Stream Header. This is the reason
+ why CRC32 code cannot be disabled when building liblzma (in addition,
+ the LZMA encoder uses CRC32 for hashing, so that's another reason).
+
+ The integrity check of the actual data is calculated from the
+ uncompressed data. This check can be CRC32, CRC64, or SHA256.
+ It can also be omitted completely, although that usually is not
+ a good thing to do. There are free IDs left, so support for new
+ checks algorithms can be added later.
+
+
+API and ABI stability
+
+ The API and ABI of liblzma isn't stable yet, although no huge
+ changes should happen. One potential place for change is the
+ lzma_options_subblock structure.
+
+ In the 4.42.0alpha phase, the shared library version number won't
+ be updated even if ABI breaks. I don't want to track the ABI changes
+ yet. Just rebuild everything when you upgrade liblzma until we get
+ to the beta stage.
+
+
+Size of the library
+
+ While liblzma isn't huge, it is quite far from the smallest possible
+ LZMA implementation: full liblzma binary (with support for all
+ filters and other features) is way over 100 KiB, but the plain raw
+ LZMA decoder is only 5-10 KiB.
+
+ To decrease the size of the library, you can omit parts of the library
+ by passing certain options to the `configure' script. Disabling
+ everything but the decoders of the require filters will usually give
+ you a small enough library, but if you need a decoder for example
+ embedded in the operating system kernel, the code from liblzma probably
+ isn't suitable as is.
+
+ If you need a minimal implementation supporting .lzma Streams, you
+ may need to do partial rewrite. liblzma uses stateful API like zlib.
+ That increases the size of the library. Using callback API or even
+ simpler buffer-to-buffer API would allow smaller implementation.
+
+ LZMA SDK contains smaller LZMA decoder written in ANSI-C than
+ liblzma, so you may want to take a look at that code. However,
+ it doesn't (at least not yet) support the new .lzma Stream format.
+
+
+Documentation
+
+ There's no other documentation than the public headers and this
+ text yet. Real docs will be written some day, I hope.
+
diff --git a/doc/liblzma-security.txt b/doc/liblzma-security.txt
new file mode 100644
index 0000000..487637e
--- /dev/null
+++ b/doc/liblzma-security.txt
@@ -0,0 +1,219 @@
+
+Using liblzma securely
+----------------------
+
+0. Introduction
+
+ This document discusses how to use liblzma securely. There are issues
+ that don't apply to zlib or libbzip2, so reading this document is
+ strongly recommended even for those who are very familiar with zlib
+ or libbzip2.
+
+ While making liblzma itself as secure as possible is essential, it's
+ out of scope of this document.
+
+
+1. Memory usage
+
+ The memory usage of liblzma varies a lot.
+
+
+1.1. Problem sources
+
+1.1.1. Block coder
+
+ The memory requirements of Block encoder depend on the used filters
+ and their settings. The memory requirements of the Block decoder
+ depend on the which filters and with which filter settings the Block
+ was encoded. Usually the memory requirements of a decoder are equal
+ or less than the requirements of the encoder with the same settings.
+
+ While the typical memory requirements to decode a Block is from a few
+ hundred kilobytes to tens of megabytes, a maliciously constructed
+ files can require a lot more RAM to decode. With the current filters,
+ the maximum amount is about 7 GiB. If you use multi-threaded decoding,
+ every Block can require this amount of RAM, thus a four-threaded
+ decoder could suddenly try to allocate 28 GiB of RAM.
+
+ If you don't limit the maximum memory usage in any way, and there are
+ no resource limits set on the operating system side, one malicious
+ input file can run the system out of memory, or at least make it swap
+ badly for a long time. This is exceptionally bad on servers e.g.
+ email server doing virus scanning on incoming messages.
+
+
+1.1.2. Metadata decoder
+
+ Multi-Block .lzma files contain at least one Metadata Block.
+ Externally the Metadata Blocks are similar to Data Blocks, so all
+ the issues mentioned about memory usage of Data Blocks applies to
+ Metadata Blocks too.
+
+ The uncompressed content of Metadata Blocks contain information about
+ the Stream as a whole, and optionally some Extra Records. The
+ information about the Stream is kept in liblzma's internal data
+ structures in RAM. Extra Records can contain arbitrary data. They are
+ not interpreted by liblzma, but liblzma will provide them to the
+ application in uninterpreted form if the application wishes so.
+
+ Usually the Uncompressed Size of a Metadata Block is small. Even on
+ extreme cases, it shouldn't be much bigger than a few megabytes. Once
+ the Metadata has been parsed into native data structures in liblzma,
+ it usually takes a little more memory than in the encoded form. For
+ all normal files, this is no problem, since the resulting memory usage
+ won't be too much.
+
+ The problem is that a maliciously constructed Metadata Block can
+ contain huge amount of "information", which liblzma will try to store
+ in its internal data structures. This may cause liblzma to allocate
+ all the available RAM unless some kind of resource usage limits are
+ applied.
+
+ Note that the Extra Records in Metadata are always parsed but, but
+ memory is allocated for them only if the application has requested
+ liblzma to provide the Extra Records to the application.
+
+
+1.2. Solutions
+
+ If you need to decode files from untrusted sources (most people do),
+ you must limit the memory usage to avoid denial of service (DoS)
+ conditions caused by malicious input files.
+
+ The first step is to find out how much memory you are allowed consume
+ at maximum. This may be a hardcoded constant or derived from the
+ available RAM; whatever is appropriate in the application.
+
+ The simplest solution is to use setrlimit() if the kernel supports
+ RLIMIT_AS, which limits the memory usage of the whole process.
+ For more portable and fine-grained limitting, you can use
+ memory limitter functions found from <lzma/memlimit.h>.
+
+
+1.2.1. Encoder
+
+ lzma_memory_usage() will give you a rough estimate about the memory
+ usage of the given filter chain. To dramatically simplify the internal
+ implementation, this function doesn't take into account all the small
+ helper data structures needed in various places; only the structures
+ with significant memory usage are taken into account. Still, the
+ accuracy of this function should be well within a mebibyte.
+
+ The Subblock filter is a special case. If a Subfilter has been
+ specified, it isn't taken into account when lzma_memory_usage()
+ calculates the memory usage. You need to calculate the memory usage
+ of the Subfilter separately.
+
+ Keeping track of Blocks in a Multi-Block Stream takes a few dozen
+ bytes of RAM per Block (size of the lzma_index structure plus overhead
+ of malloc()). It isn't a good idea to put tens of thousands of Blocks
+ into a Stream unless you have a very good reason to do so (compressed
+ dictionary could be an example of such situation).
+
+ Also keep the number and sizes of Extra Records sane. If you produce
+ the list of Extra Records automatically from some untrusted source,
+ you should not only validate the content of these Records, but also
+ their memory usage.
+
+
+1.2.2. Decoder
+
+ A single-threaded decoder should simply use a memory limitter and
+ indicate an error if it runs out of memory.
+
+ Memory-limitting with multi-threaded decoding is tricky. The simple
+ solution is to divide the maximum allowed memory usage with the
+ maximum allowed threads, and give each Block decoder their own
+ independent lzma_memory_limitter. The drawback is that if one Block
+ needs notably more RAM than any other Block, the decoder will run out
+ of memory when in reality there would be plenty of free RAM.
+
+ An attractive alternative would be using shared lzma_memory_limitter.
+ Depending on the application and the expected type of input, this may
+ either be the best solution or a source of hard-to-repeat problems.
+ Consider the following requirements:
+ - You use at maximum of n threads.
+ - x(i) is the decoder memory requirements of the Block number i
+ in an expected input Stream.
+ - The memory limitter is set to higher value than the sum of n
+ highest values x(i).
+
+ (If you are better at explaining the above conditions, please
+ contribute your improved version.)
+
+ If the above conditions aren't met, it is possible that the decoding
+ will fail unpredictably. That is, on the same machine using the same
+ settings, the decoding may sometimes succeed and sometimes fail. This
+ is because sometimes threads may run so that the Blocks with highest
+ memory usage are tried to be decoded at the same time.
+
+ Most .lzma files have all the Blocks encoded with identical settings,
+ or at least the memory usage won't vary dramatically. That's why most
+ multi-threaded decoders probably want to use the simple "separate
+ lzma_memory_limitter for each thread" solution, possibly fallbacking
+ to single-threaded mode in case the per-thread memory limits aren't
+ enough in multi-threaded mode.
+
+FIXME: Memory usage of Stream info.
+
+[
+
+]
+
+
+2. Huge uncompressed output
+
+2.1. Data Blocks
+
+ Decoding a tiny .lzma file can produce huge amount of uncompressed
+ output. There is an example file of 45 bytes, which decodes to 64 PiB
+ (that's 2^56 bytes). Uncompressing such a file to disk is likely to
+ fill even a bigger disk array. If the data is written to a pipe, it
+ may not fill the disk, but would still take very long time to finish.
+
+ To avoid denial of service conditions caused by huge amount of
+ uncompressed output, applications using liblzma should use some method
+ to limit the amount of output produced. The exact method depends on
+ the application.
+
+ All valid .lzma Streams make it possible to find out the uncompressed
+ size of the Stream without actually uncompressing the data. This
+ information is available in at least one of the Metadata Blocks.
+ Once the uncompressed size is parsed, the decoder can verify that
+ it doesn't exceed certain limits (e.g. available disk space).
+
+ When the uncompressed size is known, the decoder can actively keep
+ track of the amount of output produced so far, and that it doesn't
+ exceed the known uncompressed size. If it does exceed, the file is
+ known to be corrupt and an error should be indicated without
+ continuing to decode the rest of the file.
+
+ Unfortunately, finding the uncompressed size beforehand is often
+ possible only in non-streamed mode, because the needed information
+ could be in the Footer Metdata Block, which (obviously) is at the
+ end of the Stream. In purely streamed mode decoding, one may need to
+ use some rough arbitrary limits to prevent the problems described in
+ the beginning of this section.
+
+
+2.2. Metadata
+
+ Metadata is stored in Metadata Blocks, which are very similar to
+ Data Blocks. Thus, the uncompressed size can be huge just like with
+ Data Blocks. The difference is, that the contents of Metadata Blocks
+ aren't given to the application as is, but parsed by liblzma. Still,
+ reading through a huge Metadata can take very long time, effectively
+ creating a denial of service like piping decoded a Data Block to
+ another process would do.
+
+ At first it would seem that using a memory limitter would prevent
+ this issue as a side effect. But it does so only if the application
+ requests liblzma to allocate the Extra Records and provide them to
+ the application. If Extra Records aren't requested, they aren't
+ allocated either. Still, the Extra Records are being read through
+ to validate that the Metadata is in proper format.
+
+ The solution is to limit the Uncompressed Size of a Metadata Block
+ to some relatively large value. This will make liblzma to give an
+ error when the given limit is reached.
+
diff --git a/doc/lzma-intro.txt b/doc/lzma-intro.txt
new file mode 100644
index 0000000..bde8a05
--- /dev/null
+++ b/doc/lzma-intro.txt
@@ -0,0 +1,107 @@
+
+Introduction to the lzma command line tool
+------------------------------------------
+
+Overview
+
+ The lzma command line tool is similar to gzip and bzip2, but for
+ compressing and uncompressing .lzma files.
+
+
+Supported file formats
+
+ By default, the tool creates files in the new .lzma format. This can
+ be overriden with --format=FMT command line option. Use --format=alone
+ to create files in the old LZMA_Alone format.
+
+ By default, the tool uncompresses both the new .lzma format and
+ LZMA_Alone format. This is to make it transparent to switch from
+ the old LZMA_Alone format to the new .lzma format. Since both
+ formats use the same filename suffix, average user should never
+ notice which format was used.
+
+
+Differences to gzip and bzip2
+
+ Standard input and output
+
+ Both gzip and bzip2 refuse to write compressed data to a terminal and
+ read compressed data from a terminal. With gzip (but not with bzip2),
+ this can be overriden with the `--force' option. lzma follows the
+ behavior of gzip here.
+
+ Usage of LZMA_OPT environment variable
+
+ gzip and bzip2 read GZIP and BZIP2 environment variables at startup.
+ These variables may contain extra command line options.
+
+ gzip and bzip2 allow passing not only options, but also end-of-options
+ indicator (`--') and filenames via the environment variable. No quoting
+ is supported with the filenames.
+
+ Here are examples with gzip. bzip2 behaves identically.
+
+ bash$ echo asdf > 'foo bar'
+ bash$ GZIP='"foo bar"' gzip
+ gzip: "foo: No such file or directory
+ gzip: bar": No such file or directory
+
+ bash$ GZIP=-- gzip --help
+ gzip: --help: No such file or directory
+
+ lzma silently ignores all non-option arguments given via the
+ environment variable LZMA_OPT. Like on the command line, everything
+ after `--' is taken as non-options, and thus ignored in LZMA_OPT.
+
+ bash$ LZMA_OPT='--help' lzma --version # Displays help
+ bash$ LZMA_OPT='-- --help' lzma --version # Displays version
+
+
+Filter chain presets
+
+ Like in gzip and bzip2, lzma supports numbered presets from 1 to 9
+ where 1 is the fastest and 9 the best compression. 1 and 2 are for
+ fast compressing with small memory usage, 3 to 6 for good compression
+ ratio with medium memory usage, and 7 to 9 for excellent compression
+ ratio with higher memory requirements. The default is 7 if memory
+ usage limit allows.
+
+ In future, there will probably be an option like --preset=NAME, which
+ will contain more special presets for specific file types.
+
+ It's also possible that there will be some heuristics to select good
+ filters. For example, the tool could detect when a .tar archive is
+ being compressed, and enable x86 filter only for those files in the
+ .tar archive that are ELF or PE executables for x86.
+
+
+Specifying custom filter chains
+
+ Custom filter chains are specified by using long options with the name
+ of the filters in correct order. For example, to pass the input data to
+ the x86 filter and the output of that to the LZMA filter, the following
+ command will do:
+
+ lzma --x86 --lzma filename
+
+ Some filters accept options, which are specified as a comma-separated
+ list of key=value pairs:
+
+ lzma --delta=distance=4 --lzma=dict=4Mi,lc=8,lp=2 filename
+
+
+Memory usage control
+
+ By default, the command line tool limits memory usage to 1/3 of the
+ available physical RAM. If no preset or custom filter chain has been
+ given, the default preset will be used. If the memory limit is too
+ low for the default preset, the tool will silently switch to lower
+ preset.
+
+ When a preset or a custom filter chain has been specified and the
+ memory limit is too low, an error message is displayed and no files
+ are processed.
+
+ If the decoder hits the memory usage limit, an error is displayed and
+ no more files are processed.
+
diff --git a/extra/scanlzma/scanlzma.c b/extra/scanlzma/scanlzma.c
new file mode 100644
index 0000000..3612f9d
--- /dev/null
+++ b/extra/scanlzma/scanlzma.c
@@ -0,0 +1,85 @@
+/*
+ scanlzma, scan for lzma compressed data in stdin and echo it to stdout.
+ Copyright (C) 2006 Timo Lindfors
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+*/
+
+/* Usage example:
+
+ $ wget http://www.wifi-shop.cz/Files/produkty/wa2204/wa2204av1.4.1.zip
+ $ unzip wa2204av1.4.1.zip
+ $ gcc scanlzma.c -o scanlzma -Wall
+ $ ./scanlzma 0 < WA2204-FW1.4.1/linux-1.4.bin | lzma -c -d | strings | grep -i "copyright"
+ UpdateDD version 2.5, Copyright (C) 2005 Philipp Benner.
+ Copyright (C) 2005 Philipp Benner.
+ Copyright (C) 2005 Philipp Benner.
+ mawk 1.3%s%s %s, Copyright (C) Michael D. Brennan
+ # Copyright (C) 1998, 1999, 2001 Henry Spencer.
+ ...
+
+*/
+
+
+/* LZMA compressed file format */
+/* --------------------------- */
+/* Offset Size Description */
+/* 0 1 Special LZMA properties for compressed data */
+/* 1 4 Dictionary size (little endian) */
+/* 5 8 Uncompressed size (little endian). -1 means unknown size */
+/* 13 Compressed data */
+
+#define BUFSIZE 4096
+
+int find_lzma_header(unsigned char *buf) {
+ return (buf[0] < 0xE1
+ && buf[0] == 0x5d
+ && buf[4] < 0x20
+ && (memcmp (buf + 10 , "\x00\x00\x00", 3) == 0
+ || (memcmp (buf + 5, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 8) == 0)));
+}
+
+int main(int argc, char *argv[]) {
+ char buf[BUFSIZE];
+ int ret, i, numlzma, blocks=0;
+
+ if (argc != 2) {
+ printf("usage: %s numlzma < infile | lzma -c -d > outfile\n"
+ "where numlzma is index of lzma file to extract, starting from zero.\n",
+ argv[0]);
+ exit(1);
+ }
+ numlzma = atoi(argv[1]);
+
+ for (;;) {
+ /* Read data. */
+ ret = fread(buf, BUFSIZE, 1, stdin);
+ if (ret != 1)
+ break;
+
+ /* Scan for signature. */
+ for (i = 0; i<BUFSIZE-23; i++) {
+ if (find_lzma_header(buf+i) && numlzma-- <= 0) {
+ fwrite(buf+i, (BUFSIZE-i), 1, stdout);
+ for (;;) {
+ int ch;
+ ch = getchar();
+ if (ch == EOF)
+ exit(0);
+ putchar(ch);
+ }
+
+ }
+ }
+ blocks++;
+ }
+ return 1;
+}
diff --git a/lib/Makefile.am b/lib/Makefile.am
new file mode 100644
index 0000000..46e3a4a
--- /dev/null
+++ b/lib/Makefile.am
@@ -0,0 +1,40 @@
+##
+## Copyright (C) 2004-2007 Free Software Foundation, Inc.
+## Copyright (C) 2007 Lasse Collin
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+
+## Not using gnulib-tool, at least for now. Less mess this way.
+
+## We need two builds of libgnu: one with NLS and one without.
+## This is because lzma uses NLS but lzmadec doesn't, while
+## both need GNU getopt_long().
+noinst_LIBRARIES = libgnu.a libgnu_nls.a
+
+libgnu_a_SOURCES =
+libgnu_a_DEPENDENCIES = $(LIBOBJS)
+libgnu_a_LIBADD = $(LIBOBJS)
+libgnu_a_CPPFLAGS = -DDISABLE_NLS=1
+
+libgnu_nls_a_SOURCES =
+libgnu_nls_a_DEPENDENCIES = $(LIBOBJS)
+libgnu_nls_a_LIBADD = $(LIBOBJS)
+
+EXTRA_DIST = gettext.h getopt_.h getopt.c getopt1.c getopt_int.h
+BUILT_SOURCES = $(GETOPT_H)
+MOSTLYCLEANFILES = getopt.h getopt.h-t
+
+getopt.h: getopt_.h
+ { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+ cat $(srcdir)/getopt_.h; \
+ } > $@-t
+ mv -f $@-t $@
diff --git a/lib/getopt.c b/lib/getopt.c
new file mode 100644
index 0000000..3580ad8
--- /dev/null
+++ b/lib/getopt.c
@@ -0,0 +1,1191 @@
+/* Getopt for GNU.
+ NOTE: getopt is now part of the C library, so if you don't know what
+ "Keep this file name-space clean" means, talk to drepper@gnu.org
+ before changing it!
+ Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001,2002,2003,2004,2006
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include "getopt.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifdef __VMS
+# include <unixlib.h>
+#endif
+
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "gettext.h"
+# define _(msgid) gettext (msgid)
+#endif
+
+#if defined _LIBC && defined USE_IN_LIBIO
+# include <wchar.h>
+#endif
+
+#ifndef attribute_hidden
+# define attribute_hidden
+#endif
+
+/* Unlike standard Unix `getopt', functions like `getopt_long'
+ let the user intersperse the options with the other arguments.
+
+ As `getopt_long' works, it permutes the elements of ARGV so that,
+ when it is done, all the options precede everything else. Thus
+ all application programs are extended to handle flexible argument order.
+
+ Using `getopt' or setting the environment variable POSIXLY_CORRECT
+ disables permutation.
+ Then the application's behavior is completely standard.
+
+ GNU application programs can use a third alternative mode in which
+ they can distinguish the relative order of options and other arguments. */
+
+#include "getopt_int.h"
+
+/* For communication from `getopt' to the caller.
+ When `getopt' finds an option that takes an argument,
+ the argument value is returned here.
+ Also, when `ordering' is RETURN_IN_ORDER,
+ each non-option ARGV-element is returned here. */
+
+char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+ This is used for communication to and from the caller
+ and for communication between successive calls to `getopt'.
+
+ On entry to `getopt', zero means this is the first call; initialize.
+
+ When `getopt' returns -1, this is the index of the first of the
+ non-option elements that the caller should itself scan.
+
+ Otherwise, `optind' communicates from one call to the next
+ how much of ARGV has been scanned so far. */
+
+/* 1003.2 says this must be 1 before any call. */
+int optind = 1;
+
+/* Callers store zero here to inhibit the error message
+ for unrecognized options. */
+
+int opterr = 1;
+
+/* Set to an option character which was unrecognized.
+ This must be initialized on some systems to avoid linking in the
+ system's own getopt implementation. */
+
+int optopt = '?';
+
+/* Keep a global copy of all internal members of getopt_data. */
+
+static struct _getopt_data getopt_data;
+
+
+#if defined HAVE_DECL_GETENV && !HAVE_DECL_GETENV
+extern char *getenv ();
+#endif
+
+#ifdef _LIBC
+/* Stored original parameters.
+ XXX This is no good solution. We should rather copy the args so
+ that we can compare them later. But we must not use malloc(3). */
+extern int __libc_argc;
+extern char **__libc_argv;
+
+/* Bash 2.0 gives us an environment variable containing flags
+ indicating ARGV elements that should not be considered arguments. */
+
+# ifdef USE_NONOPTION_FLAGS
+/* Defined in getopt_init.c */
+extern char *__getopt_nonoption_flags;
+# endif
+
+# ifdef USE_NONOPTION_FLAGS
+# define SWAP_FLAGS(ch1, ch2) \
+ if (d->__nonoption_flags_len > 0) \
+ { \
+ char __tmp = __getopt_nonoption_flags[ch1]; \
+ __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
+ __getopt_nonoption_flags[ch2] = __tmp; \
+ }
+# else
+# define SWAP_FLAGS(ch1, ch2)
+# endif
+#else /* !_LIBC */
+# define SWAP_FLAGS(ch1, ch2)
+#endif /* _LIBC */
+
+/* Exchange two adjacent subsequences of ARGV.
+ One subsequence is elements [first_nonopt,last_nonopt)
+ which contains all the non-options that have been skipped so far.
+ The other is elements [last_nonopt,optind), which contains all
+ the options processed since those non-options were skipped.
+
+ `first_nonopt' and `last_nonopt' are relocated so that they describe
+ the new indices of the non-options in ARGV after they are moved. */
+
+static void
+exchange (char **argv, struct _getopt_data *d)
+{
+ int bottom = d->__first_nonopt;
+ int middle = d->__last_nonopt;
+ int top = d->optind;
+ char *tem;
+
+ /* Exchange the shorter segment with the far end of the longer segment.
+ That puts the shorter segment into the right place.
+ It leaves the longer segment in the right place overall,
+ but it consists of two parts that need to be swapped next. */
+
+#if defined _LIBC && defined USE_NONOPTION_FLAGS
+ /* First make sure the handling of the `__getopt_nonoption_flags'
+ string can work normally. Our top argument must be in the range
+ of the string. */
+ if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len)
+ {
+ /* We must extend the array. The user plays games with us and
+ presents new arguments. */
+ char *new_str = malloc (top + 1);
+ if (new_str == NULL)
+ d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;
+ else
+ {
+ memset (__mempcpy (new_str, __getopt_nonoption_flags,
+ d->__nonoption_flags_max_len),
+ '\0', top + 1 - d->__nonoption_flags_max_len);
+ d->__nonoption_flags_max_len = top + 1;
+ __getopt_nonoption_flags = new_str;
+ }
+ }
+#endif
+
+ while (top > middle && middle > bottom)
+ {
+ if (top - middle > middle - bottom)
+ {
+ /* Bottom segment is the short one. */
+ int len = middle - bottom;
+ register int i;
+
+ /* Swap it with the top part of the top segment. */
+ for (i = 0; i < len; i++)
+ {
+ tem = argv[bottom + i];
+ argv[bottom + i] = argv[top - (middle - bottom) + i];
+ argv[top - (middle - bottom) + i] = tem;
+ SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
+ }
+ /* Exclude the moved bottom segment from further swapping. */
+ top -= len;
+ }
+ else
+ {
+ /* Top segment is the short one. */
+ int len = top - middle;
+ register int i;
+
+ /* Swap it with the bottom part of the bottom segment. */
+ for (i = 0; i < len; i++)
+ {
+ tem = argv[bottom + i];
+ argv[bottom + i] = argv[middle + i];
+ argv[middle + i] = tem;
+ SWAP_FLAGS (bottom + i, middle + i);
+ }
+ /* Exclude the moved top segment from further swapping. */
+ bottom += len;
+ }
+ }
+
+ /* Update records for the slots the non-options now occupy. */
+
+ d->__first_nonopt += (d->optind - d->__last_nonopt);
+ d->__last_nonopt = d->optind;
+}
+
+/* Initialize the internal data when the first call is made. */
+
+static const char *
+_getopt_initialize (int argc, char **argv, const char *optstring,
+ int posixly_correct, struct _getopt_data *d)
+{
+ /* Start processing options with ARGV-element 1 (since ARGV-element 0
+ is the program name); the sequence of previously skipped
+ non-option ARGV-elements is empty. */
+
+ d->__first_nonopt = d->__last_nonopt = d->optind;
+
+ d->__nextchar = NULL;
+
+ d->__posixly_correct = posixly_correct || !!getenv ("POSIXLY_CORRECT");
+
+ /* Determine how to handle the ordering of options and nonoptions. */
+
+ if (optstring[0] == '-')
+ {
+ d->__ordering = RETURN_IN_ORDER;
+ ++optstring;
+ }
+ else if (optstring[0] == '+')
+ {
+ d->__ordering = REQUIRE_ORDER;
+ ++optstring;
+ }
+ else if (d->__posixly_correct)
+ d->__ordering = REQUIRE_ORDER;
+ else
+ d->__ordering = PERMUTE;
+
+#if defined _LIBC && defined USE_NONOPTION_FLAGS
+ if (!d->__posixly_correct
+ && argc == __libc_argc && argv == __libc_argv)
+ {
+ if (d->__nonoption_flags_max_len == 0)
+ {
+ if (__getopt_nonoption_flags == NULL
+ || __getopt_nonoption_flags[0] == '\0')
+ d->__nonoption_flags_max_len = -1;
+ else
+ {
+ const char *orig_str = __getopt_nonoption_flags;
+ int len = d->__nonoption_flags_max_len = strlen (orig_str);
+ if (d->__nonoption_flags_max_len < argc)
+ d->__nonoption_flags_max_len = argc;
+ __getopt_nonoption_flags =
+ (char *) malloc (d->__nonoption_flags_max_len);
+ if (__getopt_nonoption_flags == NULL)
+ d->__nonoption_flags_max_len = -1;
+ else
+ memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
+ '\0', d->__nonoption_flags_max_len - len);
+ }
+ }
+ d->__nonoption_flags_len = d->__nonoption_flags_max_len;
+ }
+ else
+ d->__nonoption_flags_len = 0;
+#endif
+
+ return optstring;
+}
+
+/* Scan elements of ARGV (whose length is ARGC) for option characters
+ given in OPTSTRING.
+
+ If an element of ARGV starts with '-', and is not exactly "-" or "--",
+ then it is an option element. The characters of this element
+ (aside from the initial '-') are option characters. If `getopt'
+ is called repeatedly, it returns successively each of the option characters
+ from each of the option elements.
+
+ If `getopt' finds another option character, it returns that character,
+ updating `optind' and `nextchar' so that the next call to `getopt' can
+ resume the scan with the following option character or ARGV-element.
+
+ If there are no more option characters, `getopt' returns -1.
+ Then `optind' is the index in ARGV of the first ARGV-element
+ that is not an option. (The ARGV-elements have been permuted
+ so that those that are not options now come last.)
+
+ OPTSTRING is a string containing the legitimate option characters.
+ If an option character is seen that is not listed in OPTSTRING,
+ return '?' after printing an error message. If you set `opterr' to
+ zero, the error message is suppressed but we still return '?'.
+
+ If a char in OPTSTRING is followed by a colon, that means it wants an arg,
+ so the following text in the same ARGV-element, or the text of the following
+ ARGV-element, is returned in `optarg'. Two colons mean an option that
+ wants an optional arg; if there is text in the current ARGV-element,
+ it is returned in `optarg', otherwise `optarg' is set to zero.
+
+ If OPTSTRING starts with `-' or `+', it requests different methods of
+ handling the non-option ARGV-elements.
+ See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
+
+ Long-named options begin with `--' instead of `-'.
+ Their names may be abbreviated as long as the abbreviation is unique
+ or is an exact match for some defined option. If they have an
+ argument, it follows the option name in the same ARGV-element, separated
+ from the option name by a `=', or else the in next ARGV-element.
+ When `getopt' finds a long-named option, it returns 0 if that option's
+ `flag' field is nonzero, the value of the option's `val' field
+ if the `flag' field is zero.
+
+ LONGOPTS is a vector of `struct option' terminated by an
+ element containing a name which is zero.
+
+ LONGIND returns the index in LONGOPT of the long-named option found.
+ It is only valid when a long-named option has been found by the most
+ recent call.
+
+ If LONG_ONLY is nonzero, '-' as well as '--' can introduce
+ long-named options.
+
+ If POSIXLY_CORRECT is nonzero, behave as if the POSIXLY_CORRECT
+ environment variable were set. */
+
+int
+_getopt_internal_r (int argc, char **argv, const char *optstring,
+ const struct option *longopts, int *longind,
+ int long_only, int posixly_correct, struct _getopt_data *d)
+{
+ int print_errors = d->opterr;
+ if (optstring[0] == ':')
+ print_errors = 0;
+
+ if (argc < 1)
+ return -1;
+
+ d->optarg = NULL;
+
+ if (d->optind == 0 || !d->__initialized)
+ {
+ if (d->optind == 0)
+ d->optind = 1; /* Don't scan ARGV[0], the program name. */
+ optstring = _getopt_initialize (argc, argv, optstring,
+ posixly_correct, d);
+ d->__initialized = 1;
+ }
+
+ /* Test whether ARGV[optind] points to a non-option argument.
+ Either it does not have option syntax, or there is an environment flag
+ from the shell indicating it is not an option. The later information
+ is only used when the used in the GNU libc. */
+#if defined _LIBC && defined USE_NONOPTION_FLAGS
+# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
+ || (d->optind < d->__nonoption_flags_len \
+ && __getopt_nonoption_flags[d->optind] == '1'))
+#else
+# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
+#endif
+
+ if (d->__nextchar == NULL || *d->__nextchar == '\0')
+ {
+ /* Advance to the next ARGV-element. */
+
+ /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
+ moved back by the user (who may also have changed the arguments). */
+ if (d->__last_nonopt > d->optind)
+ d->__last_nonopt = d->optind;
+ if (d->__first_nonopt > d->optind)
+ d->__first_nonopt = d->optind;
+
+ if (d->__ordering == PERMUTE)
+ {
+ /* If we have just processed some options following some non-options,
+ exchange them so that the options come first. */
+
+ if (d->__first_nonopt != d->__last_nonopt
+ && d->__last_nonopt != d->optind)
+ exchange ((char **) argv, d);
+ else if (d->__last_nonopt != d->optind)
+ d->__first_nonopt = d->optind;
+
+ /* Skip any additional non-options
+ and extend the range of non-options previously skipped. */
+
+ while (d->optind < argc && NONOPTION_P)
+ d->optind++;
+ d->__last_nonopt = d->optind;
+ }
+
+ /* The special ARGV-element `--' means premature end of options.
+ Skip it like a null option,
+ then exchange with previous non-options as if it were an option,
+ then skip everything else like a non-option. */
+
+ if (d->optind != argc && !strcmp (argv[d->optind], "--"))
+ {
+ d->optind++;
+
+ if (d->__first_nonopt != d->__last_nonopt
+ && d->__last_nonopt != d->optind)
+ exchange ((char **) argv, d);
+ else if (d->__first_nonopt == d->__last_nonopt)
+ d->__first_nonopt = d->optind;
+ d->__last_nonopt = argc;
+
+ d->optind = argc;
+ }
+
+ /* If we have done all the ARGV-elements, stop the scan
+ and back over any non-options that we skipped and permuted. */
+
+ if (d->optind == argc)
+ {
+ /* Set the next-arg-index to point at the non-options
+ that we previously skipped, so the caller will digest them. */
+ if (d->__first_nonopt != d->__last_nonopt)
+ d->optind = d->__first_nonopt;
+ return -1;
+ }
+
+ /* If we have come to a non-option and did not permute it,
+ either stop the scan or describe it to the caller and pass it by. */
+
+ if (NONOPTION_P)
+ {
+ if (d->__ordering == REQUIRE_ORDER)
+ return -1;
+ d->optarg = argv[d->optind++];
+ return 1;
+ }
+
+ /* We have found another option-ARGV-element.
+ Skip the initial punctuation. */
+
+ d->__nextchar = (argv[d->optind] + 1
+ + (longopts != NULL && argv[d->optind][1] == '-'));
+ }
+
+ /* Decode the current option-ARGV-element. */
+
+ /* Check whether the ARGV-element is a long option.
+
+ If long_only and the ARGV-element has the form "-f", where f is
+ a valid short option, don't consider it an abbreviated form of
+ a long option that starts with f. Otherwise there would be no
+ way to give the -f short option.
+
+ On the other hand, if there's a long option "fubar" and
+ the ARGV-element is "-fu", do consider that an abbreviation of
+ the long option, just like "--fu", and not "-f" with arg "u".
+
+ This distinction seems to be the most useful approach. */
+
+ if (longopts != NULL
+ && (argv[d->optind][1] == '-'
+ || (long_only && (argv[d->optind][2]
+ || !strchr (optstring, argv[d->optind][1])))))
+ {
+ char *nameend;
+ const struct option *p;
+ const struct option *pfound = NULL;
+ int exact = 0;
+ int ambig = 0;
+ int indfound = -1;
+ int option_index;
+
+ for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
+ /* Do nothing. */ ;
+
+ /* Test all long options for either exact match
+ or abbreviated matches. */
+ for (p = longopts, option_index = 0; p->name; p++, option_index++)
+ if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
+ {
+ if ((unsigned int) (nameend - d->__nextchar)
+ == (unsigned int) strlen (p->name))
+ {
+ /* Exact match found. */
+ pfound = p;
+ indfound = option_index;
+ exact = 1;
+ break;
+ }
+ else if (pfound == NULL)
+ {
+ /* First nonexact match found. */
+ pfound = p;
+ indfound = option_index;
+ }
+ else if (long_only
+ || pfound->has_arg != p->has_arg
+ || pfound->flag != p->flag
+ || pfound->val != p->val)
+ /* Second or later nonexact match found. */
+ ambig = 1;
+ }
+
+ if (ambig && !exact)
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+
+ if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
+ argv[0], argv[d->optind]) >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#else
+ fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
+ argv[0], argv[d->optind]);
+#endif
+ }
+ d->__nextchar += strlen (d->__nextchar);
+ d->optind++;
+ d->optopt = 0;
+ return '?';
+ }
+
+ if (pfound != NULL)
+ {
+ option_index = indfound;
+ d->optind++;
+ if (*nameend)
+ {
+ /* Don't test has_arg with >, because some C compilers don't
+ allow it to be used on enums. */
+ if (pfound->has_arg)
+ d->optarg = nameend + 1;
+ else
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+ int n;
+#endif
+
+ if (argv[d->optind - 1][1] == '-')
+ {
+ /* --option */
+#if defined _LIBC && defined USE_IN_LIBIO
+ n = __asprintf (&buf, _("\
+%s: option `--%s' doesn't allow an argument\n"),
+ argv[0], pfound->name);
+#else
+ fprintf (stderr, _("\
+%s: option `--%s' doesn't allow an argument\n"),
+ argv[0], pfound->name);
+#endif
+ }
+ else
+ {
+ /* +option or -option */
+#if defined _LIBC && defined USE_IN_LIBIO
+ n = __asprintf (&buf, _("\
+%s: option `%c%s' doesn't allow an argument\n"),
+ argv[0], argv[d->optind - 1][0],
+ pfound->name);
+#else
+ fprintf (stderr, _("\
+%s: option `%c%s' doesn't allow an argument\n"),
+ argv[0], argv[d->optind - 1][0],
+ pfound->name);
+#endif
+ }
+
+#if defined _LIBC && defined USE_IN_LIBIO
+ if (n >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2
+ |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#endif
+ }
+
+ d->__nextchar += strlen (d->__nextchar);
+
+ d->optopt = pfound->val;
+ return '?';
+ }
+ }
+ else if (pfound->has_arg == 1)
+ {
+ if (d->optind < argc)
+ d->optarg = argv[d->optind++];
+ else
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+
+ if (__asprintf (&buf, _("\
+%s: option `%s' requires an argument\n"),
+ argv[0], argv[d->optind - 1]) >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2
+ |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#else
+ fprintf (stderr,
+ _("%s: option `%s' requires an argument\n"),
+ argv[0], argv[d->optind - 1]);
+#endif
+ }
+ d->__nextchar += strlen (d->__nextchar);
+ d->optopt = pfound->val;
+ return optstring[0] == ':' ? ':' : '?';
+ }
+ }
+ d->__nextchar += strlen (d->__nextchar);
+ if (longind != NULL)
+ *longind = option_index;
+ if (pfound->flag)
+ {
+ *(pfound->flag) = pfound->val;
+ return 0;
+ }
+ return pfound->val;
+ }
+
+ /* Can't find it as a long option. If this is not getopt_long_only,
+ or the option starts with '--' or is not a valid short
+ option, then it's an error.
+ Otherwise interpret it as a short option. */
+ if (!long_only || argv[d->optind][1] == '-'
+ || strchr (optstring, *d->__nextchar) == NULL)
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+ int n;
+#endif
+
+ if (argv[d->optind][1] == '-')
+ {
+ /* --option */
+#if defined _LIBC && defined USE_IN_LIBIO
+ n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
+ argv[0], d->__nextchar);
+#else
+ fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
+ argv[0], d->__nextchar);
+#endif
+ }
+ else
+ {
+ /* +option or -option */
+#if defined _LIBC && defined USE_IN_LIBIO
+ n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
+ argv[0], argv[d->optind][0], d->__nextchar);
+#else
+ fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
+ argv[0], argv[d->optind][0], d->__nextchar);
+#endif
+ }
+
+#if defined _LIBC && defined USE_IN_LIBIO
+ if (n >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#endif
+ }
+ d->__nextchar = (char *) "";
+ d->optind++;
+ d->optopt = 0;
+ return '?';
+ }
+ }
+
+ /* Look at and handle the next short option-character. */
+
+ {
+ char c = *d->__nextchar++;
+ char *temp = strchr (optstring, c);
+
+ /* Increment `optind' when we start to process its last character. */
+ if (*d->__nextchar == '\0')
+ ++d->optind;
+
+ if (temp == NULL || c == ':')
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+ int n;
+#endif
+
+ if (d->__posixly_correct)
+ {
+ /* 1003.2 specifies the format of this message. */
+#if defined _LIBC && defined USE_IN_LIBIO
+ n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
+ argv[0], c);
+#else
+ fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
+#endif
+ }
+ else
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
+ argv[0], c);
+#else
+ fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
+#endif
+ }
+
+#if defined _LIBC && defined USE_IN_LIBIO
+ if (n >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#endif
+ }
+ d->optopt = c;
+ return '?';
+ }
+ /* Convenience. Treat POSIX -W foo same as long option --foo */
+ if (temp[0] == 'W' && temp[1] == ';')
+ {
+ char *nameend;
+ const struct option *p;
+ const struct option *pfound = NULL;
+ int exact = 0;
+ int ambig = 0;
+ int indfound = 0;
+ int option_index;
+
+ /* This is an option that requires an argument. */
+ if (*d->__nextchar != '\0')
+ {
+ d->optarg = d->__nextchar;
+ /* If we end this ARGV-element by taking the rest as an arg,
+ we must advance to the next element now. */
+ d->optind++;
+ }
+ else if (d->optind == argc)
+ {
+ if (print_errors)
+ {
+ /* 1003.2 specifies the format of this message. */
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+
+ if (__asprintf (&buf,
+ _("%s: option requires an argument -- %c\n"),
+ argv[0], c) >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#else
+ fprintf (stderr, _("%s: option requires an argument -- %c\n"),
+ argv[0], c);
+#endif
+ }
+ d->optopt = c;
+ if (optstring[0] == ':')
+ c = ':';
+ else
+ c = '?';
+ return c;
+ }
+ else
+ /* We already incremented `d->optind' once;
+ increment it again when taking next ARGV-elt as argument. */
+ d->optarg = argv[d->optind++];
+
+ /* optarg is now the argument, see if it's in the
+ table of longopts. */
+
+ for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
+ nameend++)
+ /* Do nothing. */ ;
+
+ /* Test all long options for either exact match
+ or abbreviated matches. */
+ for (p = longopts, option_index = 0; p->name; p++, option_index++)
+ if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
+ {
+ if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name))
+ {
+ /* Exact match found. */
+ pfound = p;
+ indfound = option_index;
+ exact = 1;
+ break;
+ }
+ else if (pfound == NULL)
+ {
+ /* First nonexact match found. */
+ pfound = p;
+ indfound = option_index;
+ }
+ else
+ /* Second or later nonexact match found. */
+ ambig = 1;
+ }
+ if (ambig && !exact)
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+
+ if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
+ argv[0], argv[d->optind]) >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#else
+ fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
+ argv[0], argv[d->optind]);
+#endif
+ }
+ d->__nextchar += strlen (d->__nextchar);
+ d->optind++;
+ return '?';
+ }
+ if (pfound != NULL)
+ {
+ option_index = indfound;
+ if (*nameend)
+ {
+ /* Don't test has_arg with >, because some C compilers don't
+ allow it to be used on enums. */
+ if (pfound->has_arg)
+ d->optarg = nameend + 1;
+ else
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+
+ if (__asprintf (&buf, _("\
+%s: option `-W %s' doesn't allow an argument\n"),
+ argv[0], pfound->name) >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2
+ |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#else
+ fprintf (stderr, _("\
+%s: option `-W %s' doesn't allow an argument\n"),
+ argv[0], pfound->name);
+#endif
+ }
+
+ d->__nextchar += strlen (d->__nextchar);
+ return '?';
+ }
+ }
+ else if (pfound->has_arg == 1)
+ {
+ if (d->optind < argc)
+ d->optarg = argv[d->optind++];
+ else
+ {
+ if (print_errors)
+ {
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+
+ if (__asprintf (&buf, _("\
+%s: option `%s' requires an argument\n"),
+ argv[0], argv[d->optind - 1]) >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2
+ |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#else
+ fprintf (stderr,
+ _("%s: option `%s' requires an argument\n"),
+ argv[0], argv[d->optind - 1]);
+#endif
+ }
+ d->__nextchar += strlen (d->__nextchar);
+ return optstring[0] == ':' ? ':' : '?';
+ }
+ }
+ d->__nextchar += strlen (d->__nextchar);
+ if (longind != NULL)
+ *longind = option_index;
+ if (pfound->flag)
+ {
+ *(pfound->flag) = pfound->val;
+ return 0;
+ }
+ return pfound->val;
+ }
+ d->__nextchar = NULL;
+ return 'W'; /* Let the application handle it. */
+ }
+ if (temp[1] == ':')
+ {
+ if (temp[2] == ':')
+ {
+ /* This is an option that accepts an argument optionally. */
+ if (*d->__nextchar != '\0')
+ {
+ d->optarg = d->__nextchar;
+ d->optind++;
+ }
+ else
+ d->optarg = NULL;
+ d->__nextchar = NULL;
+ }
+ else
+ {
+ /* This is an option that requires an argument. */
+ if (*d->__nextchar != '\0')
+ {
+ d->optarg = d->__nextchar;
+ /* If we end this ARGV-element by taking the rest as an arg,
+ we must advance to the next element now. */
+ d->optind++;
+ }
+ else if (d->optind == argc)
+ {
+ if (print_errors)
+ {
+ /* 1003.2 specifies the format of this message. */
+#if defined _LIBC && defined USE_IN_LIBIO
+ char *buf;
+
+ if (__asprintf (&buf, _("\
+%s: option requires an argument -- %c\n"),
+ argv[0], c) >= 0)
+ {
+ _IO_flockfile (stderr);
+
+ int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
+ ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
+
+ __fxprintf (NULL, "%s", buf);
+
+ ((_IO_FILE *) stderr)->_flags2 = old_flags2;
+ _IO_funlockfile (stderr);
+
+ free (buf);
+ }
+#else
+ fprintf (stderr,
+ _("%s: option requires an argument -- %c\n"),
+ argv[0], c);
+#endif
+ }
+ d->optopt = c;
+ if (optstring[0] == ':')
+ c = ':';
+ else
+ c = '?';
+ }
+ else
+ /* We already incremented `optind' once;
+ increment it again when taking next ARGV-elt as argument. */
+ d->optarg = argv[d->optind++];
+ d->__nextchar = NULL;
+ }
+ }
+ return c;
+ }
+}
+
+int
+_getopt_internal (int argc, char **argv, const char *optstring,
+ const struct option *longopts, int *longind,
+ int long_only, int posixly_correct)
+{
+ int result;
+
+ getopt_data.optind = optind;
+ getopt_data.opterr = opterr;
+
+ result = _getopt_internal_r (argc, argv, optstring, longopts, longind,
+ long_only, posixly_correct, &getopt_data);
+
+ optind = getopt_data.optind;
+ optarg = getopt_data.optarg;
+ optopt = getopt_data.optopt;
+
+ return result;
+}
+
+/* glibc gets a LSB-compliant getopt.
+ Standalone applications get a POSIX-compliant getopt. */
+#if _LIBC
+enum { POSIXLY_CORRECT = 0 };
+#else
+enum { POSIXLY_CORRECT = 1 };
+#endif
+
+int
+getopt (int argc, char *const *argv, const char *optstring)
+{
+ return _getopt_internal (argc, (char **) argv, optstring, NULL, NULL, 0,
+ POSIXLY_CORRECT);
+}
+
+
+#ifdef TEST
+
+/* Compile with -DTEST to make an executable for use in testing
+ the above definition of `getopt'. */
+
+int
+main (int argc, char **argv)
+{
+ int c;
+ int digit_optind = 0;
+
+ while (1)
+ {
+ int this_option_optind = optind ? optind : 1;
+
+ c = getopt (argc, argv, "abc:d:0123456789");
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ if (digit_optind != 0 && digit_optind != this_option_optind)
+ printf ("digits occur in two different argv-elements.\n");
+ digit_optind = this_option_optind;
+ printf ("option %c\n", c);
+ break;
+
+ case 'a':
+ printf ("option a\n");
+ break;
+
+ case 'b':
+ printf ("option b\n");
+ break;
+
+ case 'c':
+ printf ("option c with value `%s'\n", optarg);
+ break;
+
+ case '?':
+ break;
+
+ default:
+ printf ("?? getopt returned character code 0%o ??\n", c);
+ }
+ }
+
+ if (optind < argc)
+ {
+ printf ("non-option ARGV-elements: ");
+ while (optind < argc)
+ printf ("%s ", argv[optind++]);
+ printf ("\n");
+ }
+
+ exit (0);
+}
+
+#endif /* TEST */
diff --git a/lib/getopt1.c b/lib/getopt1.c
new file mode 100644
index 0000000..cc0746e
--- /dev/null
+++ b/lib/getopt1.c
@@ -0,0 +1,171 @@
+/* getopt_long and getopt_long_only entry points for GNU getopt.
+ Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004,2006
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifdef _LIBC
+# include <getopt.h>
+#else
+# include <config.h>
+# include "getopt.h"
+#endif
+#include "getopt_int.h"
+
+#include <stdio.h>
+
+/* This needs to come after some library #include
+ to get __GNU_LIBRARY__ defined. */
+#ifdef __GNU_LIBRARY__
+#include <stdlib.h>
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+int
+getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
+ const struct option *long_options, int *opt_index)
+{
+ return _getopt_internal (argc, (char **) argv, options, long_options,
+ opt_index, 0, 0);
+}
+
+int
+_getopt_long_r (int argc, char **argv, const char *options,
+ const struct option *long_options, int *opt_index,
+ struct _getopt_data *d)
+{
+ return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+ 0, 0, d);
+}
+
+/* Like getopt_long, but '-' as well as '--' can indicate a long option.
+ If an option that starts with '-' (not '--') doesn't match a long option,
+ but does match a short option, it is parsed as a short option
+ instead. */
+
+int
+getopt_long_only (int argc, char *__getopt_argv_const *argv,
+ const char *options,
+ const struct option *long_options, int *opt_index)
+{
+ return _getopt_internal (argc, (char **) argv, options, long_options,
+ opt_index, 1, 0);
+}
+
+int
+_getopt_long_only_r (int argc, char **argv, const char *options,
+ const struct option *long_options, int *opt_index,
+ struct _getopt_data *d)
+{
+ return _getopt_internal_r (argc, argv, options, long_options, opt_index,
+ 1, 0, d);
+}
+
+
+#ifdef TEST
+
+#include <stdio.h>
+
+int
+main (int argc, char **argv)
+{
+ int c;
+ int digit_optind = 0;
+
+ while (1)
+ {
+ int this_option_optind = optind ? optind : 1;
+ int option_index = 0;
+ static struct option long_options[] =
+ {
+ {"add", 1, 0, 0},
+ {"append", 0, 0, 0},
+ {"delete", 1, 0, 0},
+ {"verbose", 0, 0, 0},
+ {"create", 0, 0, 0},
+ {"file", 1, 0, 0},
+ {0, 0, 0, 0}
+ };
+
+ c = getopt_long (argc, argv, "abc:d:0123456789",
+ long_options, &option_index);
+ if (c == -1)
+ break;
+
+ switch (c)
+ {
+ case 0:
+ printf ("option %s", long_options[option_index].name);
+ if (optarg)
+ printf (" with arg %s", optarg);
+ printf ("\n");
+ break;
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ if (digit_optind != 0 && digit_optind != this_option_optind)
+ printf ("digits occur in two different argv-elements.\n");
+ digit_optind = this_option_optind;
+ printf ("option %c\n", c);
+ break;
+
+ case 'a':
+ printf ("option a\n");
+ break;
+
+ case 'b':
+ printf ("option b\n");
+ break;
+
+ case 'c':
+ printf ("option c with value `%s'\n", optarg);
+ break;
+
+ case 'd':
+ printf ("option d with value `%s'\n", optarg);
+ break;
+
+ case '?':
+ break;
+
+ default:
+ printf ("?? getopt returned character code 0%o ??\n", c);
+ }
+ }
+
+ if (optind < argc)
+ {
+ printf ("non-option ARGV-elements: ");
+ while (optind < argc)
+ printf ("%s ", argv[optind++]);
+ printf ("\n");
+ }
+
+ exit (0);
+}
+
+#endif /* TEST */
diff --git a/lib/getopt_.h b/lib/getopt_.h
new file mode 100644
index 0000000..615ef9a
--- /dev/null
+++ b/lib/getopt_.h
@@ -0,0 +1,226 @@
+/* Declarations for getopt.
+ Copyright (C) 1989-1994,1996-1999,2001,2003,2004,2005,2006,2007
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _GETOPT_H
+
+#ifndef __need_getopt
+# define _GETOPT_H 1
+#endif
+
+/* Standalone applications should #define __GETOPT_PREFIX to an
+ identifier that prefixes the external functions and variables
+ defined in this header. When this happens, include the
+ headers that might declare getopt so that they will not cause
+ confusion if included after this file. Then systematically rename
+ identifiers so that they do not collide with the system functions
+ and variables. Renaming avoids problems with some compilers and
+ linkers. */
+#if defined __GETOPT_PREFIX && !defined __need_getopt
+# include <stdlib.h>
+# include <stdio.h>
+# include <unistd.h>
+# undef __need_getopt
+# undef getopt
+# undef getopt_long
+# undef getopt_long_only
+# undef optarg
+# undef opterr
+# undef optind
+# undef optopt
+# define __GETOPT_CONCAT(x, y) x ## y
+# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y)
+# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y)
+# define getopt __GETOPT_ID (getopt)
+# define getopt_long __GETOPT_ID (getopt_long)
+# define getopt_long_only __GETOPT_ID (getopt_long_only)
+# define optarg __GETOPT_ID (optarg)
+# define opterr __GETOPT_ID (opterr)
+# define optind __GETOPT_ID (optind)
+# define optopt __GETOPT_ID (optopt)
+#endif
+
+/* Standalone applications get correct prototypes for getopt_long and
+ getopt_long_only; they declare "char **argv". libc uses prototypes
+ with "char *const *argv" that are incorrect because getopt_long and
+ getopt_long_only can permute argv; this is required for backward
+ compatibility (e.g., for LSB 2.0.1).
+
+ This used to be `#if defined __GETOPT_PREFIX && !defined __need_getopt',
+ but it caused redefinition warnings if both unistd.h and getopt.h were
+ included, since unistd.h includes getopt.h having previously defined
+ __need_getopt.
+
+ The only place where __getopt_argv_const is used is in definitions
+ of getopt_long and getopt_long_only below, but these are visible
+ only if __need_getopt is not defined, so it is quite safe to rewrite
+ the conditional as follows:
+*/
+#if !defined __need_getopt
+# if defined __GETOPT_PREFIX
+# define __getopt_argv_const /* empty */
+# else
+# define __getopt_argv_const const
+# endif
+#endif
+
+/* If __GNU_LIBRARY__ is not already defined, either we are being used
+ standalone, or this is the first header included in the source file.
+ If we are being used with glibc, we need to include <features.h>, but
+ that does not exist if we are standalone. So: if __GNU_LIBRARY__ is
+ not defined, include <ctype.h>, which will pull in <features.h> for us
+ if it's from glibc. (Why ctype.h? It's guaranteed to exist and it
+ doesn't flood the namespace with stuff the way some other headers do.) */
+#if !defined __GNU_LIBRARY__
+# include <ctype.h>
+#endif
+
+#ifndef __THROW
+# ifndef __GNUC_PREREQ
+# define __GNUC_PREREQ(maj, min) (0)
+# endif
+# if defined __cplusplus && __GNUC_PREREQ (2,8)
+# define __THROW throw ()
+# else
+# define __THROW
+# endif
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* For communication from `getopt' to the caller.
+ When `getopt' finds an option that takes an argument,
+ the argument value is returned here.
+ Also, when `ordering' is RETURN_IN_ORDER,
+ each non-option ARGV-element is returned here. */
+
+extern char *optarg;
+
+/* Index in ARGV of the next element to be scanned.
+ This is used for communication to and from the caller
+ and for communication between successive calls to `getopt'.
+
+ On entry to `getopt', zero means this is the first call; initialize.
+
+ When `getopt' returns -1, this is the index of the first of the
+ non-option elements that the caller should itself scan.
+
+ Otherwise, `optind' communicates from one call to the next
+ how much of ARGV has been scanned so far. */
+
+extern int optind;
+
+/* Callers store zero here to inhibit the error message `getopt' prints
+ for unrecognized options. */
+
+extern int opterr;
+
+/* Set to an option character which was unrecognized. */
+
+extern int optopt;
+
+#ifndef __need_getopt
+/* Describe the long-named options requested by the application.
+ The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
+ of `struct option' terminated by an element containing a name which is
+ zero.
+
+ The field `has_arg' is:
+ no_argument (or 0) if the option does not take an argument,
+ required_argument (or 1) if the option requires an argument,
+ optional_argument (or 2) if the option takes an optional argument.
+
+ If the field `flag' is not NULL, it points to a variable that is set
+ to the value given in the field `val' when the option is found, but
+ left unchanged if the option is not found.
+
+ To have a long-named option do something other than set an `int' to
+ a compiled-in constant, such as set a value from `optarg', set the
+ option's `flag' field to zero and its `val' field to a nonzero
+ value (the equivalent single-letter option character, if there is
+ one). For long options that have a zero `flag' field, `getopt'
+ returns the contents of the `val' field. */
+
+struct option
+{
+ const char *name;
+ /* has_arg can't be an enum because some compilers complain about
+ type mismatches in all the code that assumes it is an int. */
+ int has_arg;
+ int *flag;
+ int val;
+};
+
+/* Names for the values of the `has_arg' field of `struct option'. */
+
+# define no_argument 0
+# define required_argument 1
+# define optional_argument 2
+#endif /* need getopt */
+
+
+/* Get definitions and prototypes for functions to process the
+ arguments in ARGV (ARGC of them, minus the program name) for
+ options given in OPTS.
+
+ Return the option character from OPTS just read. Return -1 when
+ there are no more options. For unrecognized options, or options
+ missing arguments, `optopt' is set to the option letter, and '?' is
+ returned.
+
+ The OPTS string is a list of characters which are recognized option
+ letters, optionally followed by colons, specifying that that letter
+ takes an argument, to be placed in `optarg'.
+
+ If a letter in OPTS is followed by two colons, its argument is
+ optional. This behavior is specific to the GNU `getopt'.
+
+ The argument `--' causes premature termination of argument
+ scanning, explicitly telling `getopt' that there are no more
+ options.
+
+ If OPTS begins with `-', then non-option arguments are treated as
+ arguments to the option '\1'. This behavior is specific to the GNU
+ `getopt'. If OPTS begins with `+', or POSIXLY_CORRECT is set in
+ the environment, then do not permute arguments. */
+
+extern int getopt (int ___argc, char *const *___argv, const char *__shortopts)
+ __THROW;
+
+#ifndef __need_getopt
+extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind)
+ __THROW;
+extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind)
+ __THROW;
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+/* Make sure we later can get all the definitions and declarations. */
+#undef __need_getopt
+
+#endif /* getopt.h */
diff --git a/lib/getopt_int.h b/lib/getopt_int.h
new file mode 100644
index 0000000..401579f
--- /dev/null
+++ b/lib/getopt_int.h
@@ -0,0 +1,131 @@
+/* Internal declarations for getopt.
+ Copyright (C) 1989-1994,1996-1999,2001,2003,2004
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef _GETOPT_INT_H
+#define _GETOPT_INT_H 1
+
+extern int _getopt_internal (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ int __long_only, int __posixly_correct);
+
+
+/* Reentrant versions which can handle parsing multiple argument
+ vectors at the same time. */
+
+/* Data type for reentrant functions. */
+struct _getopt_data
+{
+ /* These have exactly the same meaning as the corresponding global
+ variables, except that they are used for the reentrant
+ versions of getopt. */
+ int optind;
+ int opterr;
+ int optopt;
+ char *optarg;
+
+ /* Internal members. */
+
+ /* True if the internal members have been initialized. */
+ int __initialized;
+
+ /* The next char to be scanned in the option-element
+ in which the last option character we returned was found.
+ This allows us to pick up the scan where we left off.
+
+ If this is zero, or a null string, it means resume the scan
+ by advancing to the next ARGV-element. */
+ char *__nextchar;
+
+ /* Describe how to deal with options that follow non-option ARGV-elements.
+
+ If the caller did not specify anything,
+ the default is REQUIRE_ORDER if the environment variable
+ POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+ REQUIRE_ORDER means don't recognize them as options;
+ stop option processing when the first non-option is seen.
+ This is what Unix does.
+ This mode of operation is selected by either setting the environment
+ variable POSIXLY_CORRECT, or using `+' as the first character
+ of the list of option characters, or by calling getopt.
+
+ PERMUTE is the default. We permute the contents of ARGV as we
+ scan, so that eventually all the non-options are at the end.
+ This allows options to be given in any order, even with programs
+ that were not written to expect this.
+
+ RETURN_IN_ORDER is an option available to programs that were
+ written to expect options and other ARGV-elements in any order
+ and that care about the ordering of the two. We describe each
+ non-option ARGV-element as if it were the argument of an option
+ with character code 1. Using `-' as the first character of the
+ list of option characters selects this mode of operation.
+
+ The special argument `--' forces an end of option-scanning regardless
+ of the value of `ordering'. In the case of RETURN_IN_ORDER, only
+ `--' can cause `getopt' to return -1 with `optind' != ARGC. */
+
+ enum
+ {
+ REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+ } __ordering;
+
+ /* If the POSIXLY_CORRECT environment variable is set
+ or getopt was called. */
+ int __posixly_correct;
+
+
+ /* Handle permutation of arguments. */
+
+ /* Describe the part of ARGV that contains non-options that have
+ been skipped. `first_nonopt' is the index in ARGV of the first
+ of them; `last_nonopt' is the index after the last of them. */
+
+ int __first_nonopt;
+ int __last_nonopt;
+
+#if defined _LIBC && defined USE_NONOPTION_FLAGS
+ int __nonoption_flags_max_len;
+ int __nonoption_flags_len;
+# endif
+};
+
+/* The initializer is necessary to set OPTIND and OPTERR to their
+ default values and to clear the initialization flag. */
+#define _GETOPT_DATA_INITIALIZER { 1, 1 }
+
+extern int _getopt_internal_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ int __long_only, int __posixly_correct,
+ struct _getopt_data *__data);
+
+extern int _getopt_long_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ struct _getopt_data *__data);
+
+extern int _getopt_long_only_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts,
+ int *__longind,
+ struct _getopt_data *__data);
+
+#endif /* getopt_int.h */
diff --git a/lib/gettext.h b/lib/gettext.h
new file mode 100644
index 0000000..b6282e5
--- /dev/null
+++ b/lib/gettext.h
@@ -0,0 +1,240 @@
+/* Convenience header for conditional use of GNU <libintl.h>.
+ Copyright (C) 1995-1998, 2000-2002, 2004-2006 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Library General Public License as published
+ by the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+ USA. */
+
+#ifndef _LIBGETTEXT_H
+#define _LIBGETTEXT_H 1
+
+/* NLS can be disabled through the configure --disable-nls option.
+ *
+ * Extra hack in LZMA Utils: if DISABLE_NLS is defined, NLS is disabled
+ * even if ENABLE_NLS is true. See Makefile.am for more information.
+ */
+#if ENABLE_NLS && !defined(DISABLE_NLS)
+
+/* Get declarations of GNU message catalog functions. */
+# include <libintl.h>
+
+/* You can set the DEFAULT_TEXT_DOMAIN macro to specify the domain used by
+ the gettext() and ngettext() macros. This is an alternative to calling
+ textdomain(), and is useful for libraries. */
+# ifdef DEFAULT_TEXT_DOMAIN
+# undef gettext
+# define gettext(Msgid) \
+ dgettext (DEFAULT_TEXT_DOMAIN, Msgid)
+# undef ngettext
+# define ngettext(Msgid1, Msgid2, N) \
+ dngettext (DEFAULT_TEXT_DOMAIN, Msgid1, Msgid2, N)
+# endif
+
+#else
+
+/* Solaris /usr/include/locale.h includes /usr/include/libintl.h, which
+ chokes if dcgettext is defined as a macro. So include it now, to make
+ later inclusions of <locale.h> a NOP. We don't include <libintl.h>
+ as well because people using "gettext.h" will not include <libintl.h>,
+ and also including <libintl.h> would fail on SunOS 4, whereas <locale.h>
+ is OK. */
+#if defined(__sun)
+# include <locale.h>
+#endif
+
+/* Many header files from the libstdc++ coming with g++ 3.3 or newer include
+ <libintl.h>, which chokes if dcgettext is defined as a macro. So include
+ it now, to make later inclusions of <libintl.h> a NOP. */
+#if defined(__cplusplus) && defined(__GNUG__) && (__GNUC__ >= 3)
+# include <cstdlib>
+# if (__GLIBC__ >= 2) || _GLIBCXX_HAVE_LIBINTL_H
+# include <libintl.h>
+# endif
+#endif
+
+/* Disabled NLS.
+ The casts to 'const char *' serve the purpose of producing warnings
+ for invalid uses of the value returned from these functions.
+ On pre-ANSI systems without 'const', the config.h file is supposed to
+ contain "#define const". */
+# define gettext(Msgid) ((const char *) (Msgid))
+# define dgettext(Domainname, Msgid) ((const char *) (Msgid))
+# define dcgettext(Domainname, Msgid, Category) ((const char *) (Msgid))
+# define ngettext(Msgid1, Msgid2, N) \
+ ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dngettext(Domainname, Msgid1, Msgid2, N) \
+ ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define dcngettext(Domainname, Msgid1, Msgid2, N, Category) \
+ ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
+# define textdomain(Domainname) ((const char *) (Domainname))
+# define bindtextdomain(Domainname, Dirname) ((const char *) (Dirname))
+# define bind_textdomain_codeset(Domainname, Codeset) ((const char *) (Codeset))
+
+#endif
+
+/* A pseudo function call that serves as a marker for the automated
+ extraction of messages, but does not call gettext(). The run-time
+ translation is done at a different place in the code.
+ The argument, String, should be a literal string. Concatenated strings
+ and other string expressions won't work.
+ The macro's expansion is not parenthesized, so that it is suitable as
+ initializer for static 'char[]' or 'const char[]' variables. */
+#define gettext_noop(String) String
+
+/* The separator between msgctxt and msgid in a .mo file. */
+#define GETTEXT_CONTEXT_GLUE "\004"
+
+/* Pseudo function calls, taking a MSGCTXT and a MSGID instead of just a
+ MSGID. MSGCTXT and MSGID must be string literals. MSGCTXT should be
+ short and rarely need to change.
+ The letter 'p' stands for 'particular' or 'special'. */
+#ifdef DEFAULT_TEXT_DOMAIN
+# define pgettext(Msgctxt, Msgid) \
+ pgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#else
+# define pgettext(Msgctxt, Msgid) \
+ pgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#endif
+#define dpgettext(Domainname, Msgctxt, Msgid) \
+ pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, LC_MESSAGES)
+#define dcpgettext(Domainname, Msgctxt, Msgid, Category) \
+ pgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, Category)
+#ifdef DEFAULT_TEXT_DOMAIN
+# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
+ npgettext_aux (DEFAULT_TEXT_DOMAIN, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#else
+# define npgettext(Msgctxt, Msgid, MsgidPlural, N) \
+ npgettext_aux (NULL, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#endif
+#define dnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
+ npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, LC_MESSAGES)
+#define dcnpgettext(Domainname, Msgctxt, Msgid, MsgidPlural, N, Category) \
+ npgettext_aux (Domainname, Msgctxt GETTEXT_CONTEXT_GLUE Msgid, Msgid, MsgidPlural, N, Category)
+
+static inline const char *
+pgettext_aux (const char *domain,
+ const char *msg_ctxt_id, const char *msgid,
+ int category)
+{
+ const char *translation = dcgettext (domain, msg_ctxt_id, category);
+ if (translation == msg_ctxt_id)
+ return msgid;
+ else
+ return translation;
+}
+
+static inline const char *
+npgettext_aux (const char *domain,
+ const char *msg_ctxt_id, const char *msgid,
+ const char *msgid_plural, unsigned long int n,
+ int category)
+{
+ const char *translation =
+ dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
+ if (translation == msg_ctxt_id || translation == msgid_plural)
+ return (n == 1 ? msgid : msgid_plural);
+ else
+ return translation;
+}
+
+/* The same thing extended for non-constant arguments. Here MSGCTXT and MSGID
+ can be arbitrary expressions. But for string literals these macros are
+ less efficient than those above. */
+
+#include <string.h>
+
+#define _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS 1
+
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+#include <stdlib.h>
+#endif
+
+#define pgettext_expr(Msgctxt, Msgid) \
+ dcpgettext_expr (NULL, Msgctxt, Msgid, LC_MESSAGES)
+#define dpgettext_expr(Domainname, Msgctxt, Msgid) \
+ dcpgettext_expr (Domainname, Msgctxt, Msgid, LC_MESSAGES)
+
+static inline const char *
+dcpgettext_expr (const char *domain,
+ const char *msgctxt, const char *msgid,
+ int category)
+{
+ size_t msgctxt_len = strlen (msgctxt) + 1;
+ size_t msgid_len = strlen (msgid) + 1;
+ const char *translation;
+#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ char msg_ctxt_id[msgctxt_len + msgid_len];
+#else
+ char buf[1024];
+ char *msg_ctxt_id =
+ (msgctxt_len + msgid_len <= sizeof (buf)
+ ? buf
+ : (char *) malloc (msgctxt_len + msgid_len));
+ if (msg_ctxt_id != NULL)
+#endif
+ {
+ memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
+ msg_ctxt_id[msgctxt_len - 1] = '\004';
+ memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
+ translation = dcgettext (domain, msg_ctxt_id, category);
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ if (msg_ctxt_id != buf)
+ free (msg_ctxt_id);
+#endif
+ if (translation != msg_ctxt_id)
+ return translation;
+ }
+ return msgid;
+}
+
+#define npgettext_expr(Msgctxt, Msgid, MsgidPlural, N) \
+ dcnpgettext_expr (NULL, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
+#define dnpgettext_expr(Domainname, Msgctxt, Msgid, MsgidPlural, N) \
+ dcnpgettext_expr (Domainname, Msgctxt, Msgid, MsgidPlural, N, LC_MESSAGES)
+
+static inline const char *
+dcnpgettext_expr (const char *domain,
+ const char *msgctxt, const char *msgid,
+ const char *msgid_plural, unsigned long int n,
+ int category)
+{
+ size_t msgctxt_len = strlen (msgctxt) + 1;
+ size_t msgid_len = strlen (msgid) + 1;
+ const char *translation;
+#if _LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ char msg_ctxt_id[msgctxt_len + msgid_len];
+#else
+ char buf[1024];
+ char *msg_ctxt_id =
+ (msgctxt_len + msgid_len <= sizeof (buf)
+ ? buf
+ : (char *) malloc (msgctxt_len + msgid_len));
+ if (msg_ctxt_id != NULL)
+#endif
+ {
+ memcpy (msg_ctxt_id, msgctxt, msgctxt_len - 1);
+ msg_ctxt_id[msgctxt_len - 1] = '\004';
+ memcpy (msg_ctxt_id + msgctxt_len, msgid, msgid_len);
+ translation = dcngettext (domain, msg_ctxt_id, msgid_plural, n, category);
+#if !_LIBGETTEXT_HAVE_VARIABLE_SIZE_ARRAYS
+ if (msg_ctxt_id != buf)
+ free (msg_ctxt_id);
+#endif
+ if (!(translation == msg_ctxt_id || translation == msgid_plural))
+ return translation;
+ }
+ return (n == 1 ? msgid : msgid_plural);
+}
+
+#endif /* _LIBGETTEXT_H */
diff --git a/m4/acx_pthread.m4 b/m4/acx_pthread.m4
new file mode 100644
index 0000000..d2b1169
--- /dev/null
+++ b/m4/acx_pthread.m4
@@ -0,0 +1,279 @@
+##### http://autoconf-archive.cryp.to/acx_pthread.html
+#
+# SYNOPSIS
+#
+# ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+#
+# DESCRIPTION
+#
+# This macro figures out how to build C programs using POSIX threads.
+# It sets the PTHREAD_LIBS output variable to the threads library and
+# linker flags, and the PTHREAD_CFLAGS output variable to any special
+# C compiler flags that are needed. (The user can also force certain
+# compiler flags/libs to be tested by setting these environment
+# variables.)
+#
+# Also sets PTHREAD_CC to any special C compiler that is needed for
+# multi-threaded programs (defaults to the value of CC otherwise).
+# (This is necessary on AIX to use the special cc_r compiler alias.)
+#
+# NOTE: You are assumed to not only compile your program with these
+# flags, but also link it with them as well. e.g. you should link
+# with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
+# $LIBS
+#
+# If you are only building threads programs, you may wish to use
+# these variables in your default LIBS, CFLAGS, and CC:
+#
+# LIBS="$PTHREAD_LIBS $LIBS"
+# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+# CC="$PTHREAD_CC"
+#
+# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
+# constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
+# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+#
+# ACTION-IF-FOUND is a list of shell commands to run if a threads
+# library is found, and ACTION-IF-NOT-FOUND is a list of commands to
+# run it if it is not found. If ACTION-IF-FOUND is not specified, the
+# default action will define HAVE_PTHREAD.
+#
+# Please let the authors know if this macro fails on any platform, or
+# if you have any other suggestions or comments. This macro was based
+# on work by SGJ on autoconf scripts for FFTW (http://www.fftw.org/)
+# (with help from M. Frigo), as well as ac_pthread and hb_pthread
+# macros posted by Alejandro Forero Cuervo to the autoconf macro
+# repository. We are also grateful for the helpful feedback of
+# numerous users.
+#
+# LAST MODIFICATION
+#
+# 2007-07-29
+#
+# COPYLEFT
+#
+# Copyright (c) 2007 Steven G. Johnson <stevenj@alum.mit.edu>
+#
+# This program is free software: you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see
+# <http://www.gnu.org/licenses/>.
+#
+# As a special exception, the respective Autoconf Macro's copyright
+# owner gives unlimited permission to copy, distribute and modify the
+# configure scripts that are the output of Autoconf when processing
+# the Macro. You need not follow the terms of the GNU General Public
+# License when using or distributing such scripts, even though
+# portions of the text of the Macro appear in them. The GNU General
+# Public License (GPL) does govern all other use of the material that
+# constitutes the Autoconf Macro.
+#
+# This special exception to the GPL applies to versions of the
+# Autoconf Macro released by the Autoconf Macro Archive. When you
+# make and distribute a modified version of the Autoconf Macro, you
+# may extend this special exception to the GPL to apply to your
+# modified version as well.
+
+AC_DEFUN([ACX_PTHREAD], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_SAVE
+AC_LANG_C
+acx_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+ save_LIBS="$LIBS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
+ AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
+ AC_MSG_RESULT($acx_pthread_ok)
+ if test x"$acx_pthread_ok" = xno; then
+ PTHREAD_LIBS=""
+ PTHREAD_CFLAGS=""
+ fi
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try. Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important. Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+# other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+# doesn't hurt to check since this sometimes defines pthreads too;
+# also defines -D_REENTRANT)
+# ... -mt is also the pthreads flag for HP/aCC
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case "${host_cpu}-${host_os}" in
+ *solaris*)
+
+ # On Solaris (at least, for some versions), libc contains stubbed
+ # (non-functional) versions of the pthreads routines, so link-based
+ # tests will erroneously succeed. (We need to link with -pthreads/-mt/
+ # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
+ # a function called by this macro, so we could check for that, but
+ # who knows whether they'll stub that too in a future libc.) So,
+ # we'll just look for -pthreads and -lpthread first:
+
+ acx_pthread_flags="-pthreads pthread -mt -pthread $acx_pthread_flags"
+ ;;
+esac
+
+if test x"$acx_pthread_ok" = xno; then
+for flag in $acx_pthread_flags; do
+
+ case $flag in
+ none)
+ AC_MSG_CHECKING([whether pthreads work without any flags])
+ ;;
+
+ -*)
+ AC_MSG_CHECKING([whether pthreads work with $flag])
+ PTHREAD_CFLAGS="$flag"
+ ;;
+
+ pthread-config)
+ AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
+ if test x"$acx_pthread_config" = xno; then continue; fi
+ PTHREAD_CFLAGS="`pthread-config --cflags`"
+ PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+ ;;
+
+ *)
+ AC_MSG_CHECKING([for the pthreads library -l$flag])
+ PTHREAD_LIBS="-l$flag"
+ ;;
+ esac
+
+ save_LIBS="$LIBS"
+ save_CFLAGS="$CFLAGS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+ # Check for various functions. We must include pthread.h,
+ # since some functions may be macros. (On the Sequent, we
+ # need a special flag -Kthread to make this header compile.)
+ # We check for pthread_join because it is in -lpthread on IRIX
+ # while pthread_create is in libc. We check for pthread_attr_init
+ # due to DEC craziness with -lpthreads. We check for
+ # pthread_cleanup_push because it is one of the few pthread
+ # functions on Solaris that doesn't have a non-functional libc stub.
+ # We try pthread_create on general principles.
+ AC_TRY_LINK([#include <pthread.h>],
+ [pthread_t th; pthread_join(th, 0);
+ pthread_attr_init(0); pthread_cleanup_push(0, 0);
+ pthread_create(0,0,0,0); pthread_cleanup_pop(0); ],
+ [acx_pthread_ok=yes])
+
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+
+ AC_MSG_RESULT($acx_pthread_ok)
+ if test "x$acx_pthread_ok" = xyes; then
+ break;
+ fi
+
+ PTHREAD_LIBS=""
+ PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$acx_pthread_ok" = xyes; then
+ save_LIBS="$LIBS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+ # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+ AC_MSG_CHECKING([for joinable pthread attribute])
+ attr_name=unknown
+ for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+ AC_TRY_LINK([#include <pthread.h>], [int attr=$attr; return attr;],
+ [attr_name=$attr; break])
+ done
+ AC_MSG_RESULT($attr_name)
+ if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+ AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
+ [Define to necessary symbol if this constant
+ uses a non-standard name on your system.])
+ fi
+
+ AC_MSG_CHECKING([if more special flags are required for pthreads])
+ flag=no
+ case "${host_cpu}-${host_os}" in
+ *-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";;
+ *solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";;
+ esac
+ AC_MSG_RESULT(${flag})
+ if test "x$flag" != xno; then
+ PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+ fi
+
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+
+ # More AIX lossage: must compile with xlc_r or cc_r
+ if test x"$GCC" != xyes; then
+ AC_CHECK_PROGS(PTHREAD_CC, xlc_r cc_r, ${CC})
+ else
+ PTHREAD_CC=$CC
+ fi
+else
+ PTHREAD_CC="$CC"
+fi
+
+AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_CC)
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_pthread_ok" = xyes; then
+ ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
+ :
+else
+ acx_pthread_ok=no
+ $2
+fi
+AC_LANG_RESTORE
+])dnl ACX_PTHREAD
diff --git a/m4/getopt.m4 b/m4/getopt.m4
new file mode 100644
index 0000000..c0a73b2
--- /dev/null
+++ b/m4/getopt.m4
@@ -0,0 +1,83 @@
+# getopt.m4 serial 13
+dnl Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# The getopt module assume you want GNU getopt, with getopt_long etc,
+# rather than vanilla POSIX getopt. This means your code should
+# always include <getopt.h> for the getopt prototypes.
+
+AC_DEFUN([gl_GETOPT_SUBSTITUTE],
+[
+ AC_LIBOBJ([getopt])
+ AC_LIBOBJ([getopt1])
+ gl_GETOPT_SUBSTITUTE_HEADER
+ gl_PREREQ_GETOPT
+])
+
+AC_DEFUN([gl_GETOPT_SUBSTITUTE_HEADER],
+[
+ GETOPT_H=getopt.h
+ AC_DEFINE([__GETOPT_PREFIX], [[rpl_]],
+ [Define to rpl_ if the getopt replacement functions and variables
+ should be used.])
+ AC_SUBST([GETOPT_H])
+])
+
+AC_DEFUN([gl_GETOPT_CHECK_HEADERS],
+[
+ if test -z "$GETOPT_H"; then
+ AC_CHECK_HEADERS([getopt.h], [], [GETOPT_H=getopt.h])
+ fi
+
+ if test -z "$GETOPT_H"; then
+ AC_CHECK_FUNCS([getopt_long_only], [], [GETOPT_H=getopt.h])
+ fi
+
+ dnl BSD getopt_long uses an incompatible method to reset option processing,
+ dnl and (as of 2004-10-15) mishandles optional option-arguments.
+ if test -z "$GETOPT_H"; then
+ AC_CHECK_DECL([optreset], [GETOPT_H=getopt.h], [], [#include <getopt.h>])
+ fi
+
+ dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
+ dnl option string (as of 2005-05-05).
+ if test -z "$GETOPT_H"; then
+ AC_CACHE_CHECK([for working GNU getopt function], [gl_cv_func_gnu_getopt],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([#include <getopt.h>],
+ [[
+ char *myargv[3];
+ myargv[0] = "conftest";
+ myargv[1] = "-+";
+ myargv[2] = 0;
+ return getopt (2, myargv, "+a") != '?';
+ ]])],
+ [gl_cv_func_gnu_getopt=yes],
+ [gl_cv_func_gnu_getopt=no],
+ [dnl cross compiling - pessimistically guess based on decls
+ dnl Solaris 10 getopt doesn't handle `+' as a leading character in an
+ dnl option string (as of 2005-05-05).
+ AC_CHECK_DECL([getopt_clip],
+ [gl_cv_func_gnu_getopt=no], [gl_cv_func_gnu_getopt=yes],
+ [#include <getopt.h>])])])
+ if test "$gl_cv_func_gnu_getopt" = "no"; then
+ GETOPT_H=getopt.h
+ fi
+ fi
+])
+
+AC_DEFUN([gl_GETOPT_IFELSE],
+[
+ AC_REQUIRE([gl_GETOPT_CHECK_HEADERS])
+ AS_IF([test -n "$GETOPT_H"], [$1], [$2])
+])
+
+AC_DEFUN([gl_GETOPT], [gl_GETOPT_IFELSE([gl_GETOPT_SUBSTITUTE])])
+
+# Prerequisites of lib/getopt*.
+AC_DEFUN([gl_PREREQ_GETOPT],
+[
+ AC_CHECK_DECLS_ONCE([getenv])
+])
diff --git a/po/LINGUAS b/po/LINGUAS
new file mode 100644
index 0000000..e133fad
--- /dev/null
+++ b/po/LINGUAS
@@ -0,0 +1 @@
+fi
diff --git a/po/Makevars b/po/Makevars
new file mode 100644
index 0000000..dc19bc9
--- /dev/null
+++ b/po/Makevars
@@ -0,0 +1,46 @@
+# Makefile variables for PO directory in any package using GNU gettext.
+
+# Usually the message domain is the same as the package name.
+DOMAIN = $(PACKAGE)
+
+# These two variables depend on the location of this directory.
+subdir = po
+top_builddir = ..
+
+# These options get passed to xgettext.
+XGETTEXT_OPTIONS = --keyword=_ --keyword=N_
+
+# This is the copyright holder that gets inserted into the header of the
+# $(DOMAIN).pot file. Set this to the copyright holder of the surrounding
+# package. (Note that the msgstr strings, extracted from the package's
+# sources, belong to the copyright holder of the package.) Translators are
+# expected to transfer the copyright for their translations to this person
+# or entity, or to disclaim their copyright. The empty string stands for
+# the public domain; in this case the translators are expected to disclaim
+# their copyright.
+COPYRIGHT_HOLDER =
+
+# This is the email address or URL to which the translators shall report
+# bugs in the untranslated strings:
+# - Strings which are not entire sentences, see the maintainer guidelines
+# in the GNU gettext documentation, section 'Preparing Strings'.
+# - Strings which use unclear terms or require additional context to be
+# understood.
+# - Strings which make invalid assumptions about notation of date, time or
+# money.
+# - Pluralisation problems.
+# - Incorrect English spelling.
+# - Incorrect formatting.
+# It can be your email address, or a mailing list address where translators
+# can write to without being subscribed, or the URL of a web page through
+# which the translators can contact you.
+MSGID_BUGS_ADDRESS =
+
+# This is the list of locale categories, beyond LC_MESSAGES, for which the
+# message catalogs shall be used. It is usually empty.
+EXTRA_LOCALE_CATEGORIES =
+
+# Although you may need slightly wider terminal than 80 chars, it is
+# much nicer to edit the output of --help when this is set.
+XGETTEXT_OPTIONS += --no-wrap
+MSGMERGE += --no-wrap
diff --git a/po/POTFILES.in b/po/POTFILES.in
new file mode 100644
index 0000000..72f744a
--- /dev/null
+++ b/po/POTFILES.in
@@ -0,0 +1,13 @@
+# List of source files which contain translatable strings.
+src/lzma/help.c
+src/lzma/alloc.c
+src/lzma/args.c
+src/lzma/error.c
+src/lzma/io.c
+src/lzma/list.c
+src/lzma/main.c
+src/lzma/options.c
+src/lzma/process.c
+src/lzma/suffix.c
+src/lzma/util.c
+lib/getopt.c
diff --git a/po/fi.po b/po/fi.po
new file mode 100644
index 0000000..cb19b3e
--- /dev/null
+++ b/po/fi.po
@@ -0,0 +1,445 @@
+# translation of fi.po to Finnish
+# This file is put in the public domain.
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: fi\n"
+"Report-Msgid-Bugs-To: lasse.collin@tukaani.org\n"
+"POT-Creation-Date: 2007-12-01 18:36+0200\n"
+"PO-Revision-Date: 2007-08-09 22:14+0300\n"
+"Last-Translator: Lasse Collin <lasse.collin@tukaani.org>\n"
+"Language-Team: Finnish\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: src/lzma/help.c:28
+#, c-format
+msgid "Try `%s --help' for more information."
+msgstr "Lisätietoja saa komennolla \"%s --help\"."
+
+#: src/lzma/help.c:36
+#, c-format
+msgid ""
+"Usage: %s [OPTION]... [FILE]...\n"
+"Compress or decompress FILEs in the .lzma format.\n"
+"\n"
+msgstr ""
+"Käyttö: %s [VALITSIN]... [TIEDOSTO]...\n"
+"Pakkaa tai purkaa .lzma-muotoiset TIEDOSTOt\n"
+"\n"
+
+#: src/lzma/help.c:40
+msgid "Mandatory arguments to long options are mandatory for short options too.\n"
+msgstr "Pitkien valitsinten pakolliset argumentit ovat pakollisia myös lyhyille.\n"
+
+#: src/lzma/help.c:44
+msgid ""
+" Operation mode:\n"
+"\n"
+" -z, --compress force compression\n"
+" -d, --decompress force decompression\n"
+" -t, --test test compressed file integrity\n"
+" -l, --list list block sizes, total sizes, and possible metadata\n"
+msgstr ""
+
+#: src/lzma/help.c:53
+msgid ""
+" Operation modifiers:\n"
+"\n"
+" -k, --keep keep (don't delete) input files\n"
+" -f, --force force overwrite of output file and (de)compress links\n"
+" -c, --stdout write to standard output and don't delete input files\n"
+" -S, --suffix=.SUF use suffix `.SUF' on compressed files instead of `.lzma'\n"
+" -F, --format=FMT file format to encode or decode; possible values are\n"
+" `auto', `native', `single', `multi', and `alone'\n"
+" --files=[FILE] read filenames to process from FILE; if FILE is\n"
+" omitted, filenames are read from the standard input;\n"
+" filenames must be terminated with the newline character\n"
+" --files0=[FILE] like --files but use the nul byte as terminator\n"
+msgstr ""
+
+#: src/lzma/help.c:68
+msgid ""
+" Compression presets and basic compression options:\n"
+"\n"
+" -1 .. -2 fast compression\n"
+" -3 .. -6 good compression; default is -6 if memory limit allows\n"
+" -7 .. -9 excellent compression, but needs a lot of memory\n"
+"\n"
+" -C, --check=CHECK integrity check type: `crc32', `crc64' (default),\n"
+" or `sha256'\n"
+msgstr ""
+
+#: src/lzma/help.c:79
+msgid ""
+" Custom filter chain for compression (alternative for using presets):\n"
+"\n"
+" --lzma=[OPTS] LZMA filter; OPTS is a comma-separated list of zero or\n"
+" more of the following options (valid values; default):\n"
+" dict=NUM dictionary size in bytes (1 - 1Gi; 8Mi)\n"
+" lc=NUM number of literal context bits (0-8; 3)\n"
+" lp=NUM number of literal position bits (0-4; 0)\n"
+" pb=NUM number of position bits (0-4; 2)\n"
+" mode=MODE compression mode (`fast' or `best'; `best')\n"
+" fb=NUM number of fast bytes (5-273; 128)\n"
+" mf=NAME match finder (hc3, hc4, bt2, bt3, bt4; bt4)\n"
+" mfc=NUM match finder cycles; 0=automatic (default)\n"
+"\n"
+" --x86 x86 filter (sometimes called BCJ filter)\n"
+" --powerpc PowerPC (big endian) filter\n"
+" --ia64 IA64 (Itanium) filter\n"
+" --arm ARM filter\n"
+" --armthumb ARM-Thumb filter\n"
+" --sparc SPARC filter\n"
+"\n"
+" --copy No filtering (useful only when specified alone)\n"
+" --subblock=[OPTS] Subblock filter; valid OPTS (valid values; default):\n"
+" size=NUM number of bytes of data per subblock\n"
+" (1 - 256Mi; 4Ki)\n"
+" rle=NUM run-length encoder chunk size (0-256; 0)\n"
+msgstr ""
+
+#: src/lzma/help.c:119
+msgid ""
+" Resource usage options:\n"
+"\n"
+" -M, --memory=NUM use roughly NUM bytes of memory at maximum\n"
+" -T, --threads=NUM use at maximum of NUM (de)compression threads\n"
+msgstr ""
+
+#: src/lzma/help.c:128
+msgid ""
+" Other options:\n"
+"\n"
+" -q, --quiet suppress warnings; specify twice to suppress errors too\n"
+" -v, --verbose be verbose; specify twice for even more verbose\n"
+"\n"
+" -h, --help display this help and exit\n"
+" -V, --version display version and license information and exit\n"
+msgstr ""
+
+#: src/lzma/help.c:136
+msgid "With no FILE, or when FILE is -, read standard input.\n"
+msgstr "Jos TIEDOSTOa ei ole annettu, tai se on \"-\", luetaan vakiosyötettä.\n"
+
+#: src/lzma/help.c:142
+msgid "On this system and configuration, the tool will use"
+msgstr "Tässä järjestelmässä näillä asetuksilla, tämä työkalu käyttää"
+
+#: src/lzma/help.c:143
+#, c-format
+msgid " * roughly %zu MiB of memory at maximum; and\n"
+msgstr " * korkeintaan %zu MiB keskusmuistia (suurpiirteinen rajoitus); ja\n"
+
+#: src/lzma/help.c:146
+msgid ""
+" * at maximum of one thread for (de)compression.\n"
+"\n"
+msgstr ""
+" * korkeintaan yhtä säiettä pakkaukseen tai purkuun.\n"
+"\n"
+
+#: src/lzma/help.c:150
+#, c-format
+msgid "Report bugs to <%s> (in English or Finnish).\n"
+msgstr ""
+"Lähetä raportit ohjelmistovioista (englanniksi tai suomeksi)\n"
+"osoitteeseen <%s>.\n"
+
+#: src/lzma/args.c:126
+msgid "Maximum number of filters is seven"
+msgstr "Suotimia voi olla korkeintaan seitsemän"
+
+#: src/lzma/args.c:189
+#, c-format
+msgid "%s: Invalid filename suffix"
+msgstr "%s: Virheellinen tiedostonimen pääte"
+
+#: src/lzma/args.c:323
+#, c-format
+msgid "%s: Unknown file format type"
+msgstr "%s: Tuntematon tiedostomuodon tyyppi"
+
+#: src/lzma/args.c:349
+#, c-format
+msgid "%s: Unknown integrity check type"
+msgstr "%s: Tuntematon eheystarkisteen tyyppi"
+
+#: src/lzma/args.c:367
+msgid "Only one file can be specified with `--files'or `--files0'."
+msgstr ""
+
+#: src/lzma/args.c:417
+msgid "The environment variable LZMA_OPT contains too many arguments"
+msgstr "Ympäristömuuttuja LZMA_OPT sisältää liian monta argumenttia"
+
+#: src/lzma/args.c:483
+msgid "Memory usage limit is too small for any internal filter preset"
+msgstr ""
+
+#: src/lzma/args.c:498
+msgid "Memory usage limit is too small for the given filter setup"
+msgstr "Muistinkäyttörajoitus on liian pieni annetuille suodinasetusille"
+
+#: src/lzma/error.c:35
+msgid "Operation successful"
+msgstr ""
+
+#: src/lzma/error.c:38
+msgid "Operation finished successfully"
+msgstr ""
+
+#: src/lzma/error.c:41 src/lzma/error.c:153
+msgid "Internal error (bug)"
+msgstr "Sisäinen virhe (bugi)"
+
+#: src/lzma/error.c:44
+msgid "Compressed data is corrupt"
+msgstr "Pakattu data on korruptoitunut"
+
+#: src/lzma/error.c:50
+msgid "Unexpected end of input"
+msgstr ""
+
+#: src/lzma/error.c:53
+msgid "Unsupported options"
+msgstr ""
+
+#: src/lzma/error.c:56
+msgid "Unsupported integrity check type"
+msgstr ""
+
+#: src/lzma/error.c:87 src/lzma/error.c:93
+#, c-format
+msgid "Writing to standard output failed: %s"
+msgstr ""
+
+#: src/lzma/io.c:81
+#, c-format
+msgid "Cannot get file descriptor of the current directory: %s"
+msgstr ""
+
+#: src/lzma/io.c:123 src/lzma/util.c:127
+#, c-format
+msgid "%s: Invalid filename"
+msgstr "%s: Virheellinen tiedostonimi"
+
+#: src/lzma/io.c:130 src/lzma/io.c:233
+#, c-format
+msgid "Cannot change directory: %s"
+msgstr "Hakemiston vaihtaminen epäonnistui: %s"
+
+#: src/lzma/io.c:135
+#, c-format
+msgid "%s: File seems to be moved, not removing"
+msgstr "%s: Tiedosto näyttää olevan siirretty, ei poisteta"
+
+#: src/lzma/io.c:141
+#, c-format
+msgid "%s: Cannot remove: %s"
+msgstr ""
+
+#: src/lzma/io.c:164
+#, c-format
+msgid "%s: Cannot set the file owner: %s"
+msgstr "%s: Tiedoston omistajuuden asetus epäonnistui: %s"
+
+#: src/lzma/io.c:170
+#, c-format
+msgid "%s: Cannot set the file group: %s"
+msgstr "%s: Tiedoston ryhmän asetus epäonnistui: %s"
+
+#: src/lzma/io.c:189
+#, c-format
+msgid "%s: Cannot set the file permissions: %s"
+msgstr "%s: Tiedoston oikeuksien asetus epäonnistui: %s"
+
+#: src/lzma/io.c:252
+#, c-format
+msgid "%s: Cannot open the directory containing the file: %s"
+msgstr ""
+
+#: src/lzma/io.c:313
+#, c-format
+msgid "%s: Is a symbolic link, skipping"
+msgstr "%s: Symbolinen linkki, ohitetaan"
+
+#: src/lzma/io.c:330
+#, c-format
+msgid "%s: Is a directory, skipping"
+msgstr "%s: Hakemisto, ohitetaan"
+
+#: src/lzma/io.c:337 src/lzma/list.c:445
+#, c-format
+msgid "%s: Not a regular file, skipping"
+msgstr "%s: Ei ole tavallinen tiedosto, ohitetaan"
+
+#: src/lzma/io.c:348
+#, c-format
+msgid "%s: File has setuid or setgid bit set, skipping"
+msgstr "%s: Tiedostolla on setuid- tai setgid-bitti asetettuna, ohitetaan"
+
+#: src/lzma/io.c:355
+#, c-format
+msgid "%s: File has sticky bit set, skipping"
+msgstr "%s: Tiedostolla on sticky-bitti asetettuna, ohitetaan"
+
+#: src/lzma/io.c:362
+#, c-format
+msgid "%s: Input file has more than one hard link, skipping"
+msgstr "%s: Tiedostoon viittaa useampi kuin yksi linkki, ohitetaan"
+
+#: src/lzma/io.c:390 src/lzma/io.c:467
+#, c-format
+msgid "%s: Closing the file failed: %s"
+msgstr "%s: Tiedoston sulkeminen epäonnistui: %s"
+
+#: src/lzma/io.c:610
+#, c-format
+msgid "%s: Read error: %s"
+msgstr "%s: Lukeminen epäonnistui: %s"
+
+#: src/lzma/io.c:653
+#, c-format
+msgid "%s: Write error: %s"
+msgstr "%s: Kirjoitus epäonnistui: %s"
+
+#: src/lzma/list.c:451
+#, c-format
+msgid "%s: File is empty"
+msgstr ""
+
+#: src/lzma/main.c:57
+msgid "Cannot establish signal handlers"
+msgstr "Signaalikäsittelijöiden asetus epäonnistui"
+
+#: src/lzma/main.c:75
+msgid "Compressed data not read from a terminal."
+msgstr "Pakattua dataa ei lueta päätteeltä."
+
+#: src/lzma/main.c:77 src/lzma/main.c:92
+msgid "Use `--force' to force decompression."
+msgstr "Käytä valitsinta \"--force\" pakottaaksesi purun."
+
+#: src/lzma/main.c:90
+msgid "Compressed data not written to a terminal."
+msgstr "Pakattua dataa ei kirjoiteta päätteelle."
+
+#: src/lzma/main.c:117
+#, fuzzy, c-format
+msgid "%s: Error reading filenames: %s"
+msgstr "%s: Tiedoston sulkeminen epäonnistui: %s"
+
+#: src/lzma/main.c:122
+#, c-format
+msgid "%s: Unexpected end of input when reading filenames"
+msgstr ""
+
+#: src/lzma/main.c:212
+msgid "Cannot read data from standard input when reading filenames from standard input"
+msgstr "Dataa ei voida lukea oletussyötteestä, kun tiedostonimiä luetaan oletussyötteestä"
+
+#: src/lzma/options.c:83
+#, c-format
+msgid "%s: Options must be `name=value' pairs separated with commas"
+msgstr "%s: Asetusten tulee olla \"nimi=arvo\"-pareja, jotka on eroteltu pilkuilla"
+
+#: src/lzma/options.c:111
+#, c-format
+msgid "%s: Invalid option value"
+msgstr "%s: Virheellinen asetuksen arvo"
+
+#: src/lzma/options.c:124
+#, c-format
+msgid "%s: Invalid option name"
+msgstr "%s: Virheellinen asetuksen nimi"
+
+#: src/lzma/process.c:142
+#, c-format
+msgid "Cannot create a thread: %s"
+msgstr "Säikeen luonti epäonnistui: %s"
+
+#: src/lzma/suffix.c:85
+#, c-format
+msgid "%s: Filename has an unknown suffix, skipping"
+msgstr "%s: Tiedostonimellä on tuntematon pääte, ohitetaan"
+
+#: src/lzma/suffix.c:114
+#, c-format
+msgid "%s: File already has `%s' suffix, skipping"
+msgstr "%s: Tiedostolla on jo \"%s\"-pääte, ohitetaan"
+
+#: src/lzma/util.c:44
+#, c-format
+msgid "%s: Value is not a non-negative decimal integer"
+msgstr ""
+
+#: src/lzma/util.c:84
+#, c-format
+msgid "%s: Invalid multiplier suffix. Valid suffixes:"
+msgstr ""
+
+#: src/lzma/util.c:105
+#, c-format
+msgid "Value of the option `%s' must be in the range [%llu, %llu]"
+msgstr "Asetuksen \"%s\" arvon tulee olla välillä [%llu, %llu]"
+
+#: src/lzma/util.c:175
+msgid "Empty filename, skipping"
+msgstr "Tyhjä tiedostonimi, ohitetaan"
+
+#: lib/getopt.c:531 lib/getopt.c:547
+#, c-format
+msgid "%s: option `%s' is ambiguous\n"
+msgstr ""
+
+#: lib/getopt.c:580 lib/getopt.c:584
+#, c-format
+msgid "%s: option `--%s' doesn't allow an argument\n"
+msgstr ""
+
+#: lib/getopt.c:593 lib/getopt.c:598
+#, c-format
+msgid "%s: option `%c%s' doesn't allow an argument\n"
+msgstr ""
+
+#: lib/getopt.c:641 lib/getopt.c:660 lib/getopt.c:976 lib/getopt.c:995
+#, c-format
+msgid "%s: option `%s' requires an argument\n"
+msgstr ""
+
+#: lib/getopt.c:698 lib/getopt.c:701
+#, c-format
+msgid "%s: unrecognized option `--%s'\n"
+msgstr ""
+
+#: lib/getopt.c:709 lib/getopt.c:712
+#, c-format
+msgid "%s: unrecognized option `%c%s'\n"
+msgstr ""
+
+#: lib/getopt.c:764 lib/getopt.c:767
+#, c-format
+msgid "%s: illegal option -- %c\n"
+msgstr ""
+
+#: lib/getopt.c:773 lib/getopt.c:776
+#, c-format
+msgid "%s: invalid option -- %c\n"
+msgstr "%s: virheellinen valitsin -- %c\n"
+
+#: lib/getopt.c:828 lib/getopt.c:844 lib/getopt.c:1048 lib/getopt.c:1066
+#, c-format
+msgid "%s: option requires an argument -- %c\n"
+msgstr ""
+
+#: lib/getopt.c:897 lib/getopt.c:913
+#, c-format
+msgid "%s: option `-W %s' is ambiguous\n"
+msgstr ""
+
+#: lib/getopt.c:937 lib/getopt.c:955
+#, c-format
+msgid "%s: option `-W %s' doesn't allow an argument\n"
+msgstr ""
diff --git a/src/Makefile.am b/src/Makefile.am
new file mode 100644
index 0000000..531496c
--- /dev/null
+++ b/src/Makefile.am
@@ -0,0 +1,16 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+SUBDIRS = liblzma lzma lzmadec scripts
+EXTRA_DIST = common
diff --git a/src/common/open_stdxxx.h b/src/common/open_stdxxx.h
new file mode 100644
index 0000000..d0ac15a
--- /dev/null
+++ b/src/common/open_stdxxx.h
@@ -0,0 +1,50 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file open_stdxxx.h
+/// \brief Make sure that file descriptors 0, 1, and 2 are open
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef OPEN_STDXXX_H
+#define OPEN_STDXXX_H
+
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+static void
+open_stdxxx(int status)
+{
+ for (int i = 0; i <= 2; ++i) {
+ // We use fcntl() to check if the file descriptor is open.
+ if (fcntl(i, F_GETFD) == -1 && errno == EBADF) {
+ // With stdin, we could use /dev/full so that
+ // writing to stdin would fail. However, /dev/full
+ // is Linux specific, and if the program tries to
+ // write to stdin, there's already a problem anyway.
+ const int fd = open("/dev/null", O_NOCTTY
+ | (i == 0 ? O_WRONLY : O_RDONLY));
+
+ if (fd != i) {
+ // Something went wrong. Exit with the
+ // exit status we were given. Don't try
+ // to print an error message, since stderr
+ // may very well be non-existent. This
+ // error should be extremely rare.
+ (void)close(fd);
+ exit(status);
+ }
+ }
+ }
+
+ return;
+}
+
+#endif
diff --git a/src/common/physmem.h b/src/common/physmem.h
new file mode 100644
index 0000000..1d40b29
--- /dev/null
+++ b/src/common/physmem.h
@@ -0,0 +1,77 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file physmem.h
+/// \brief Get the amount of physical memory
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef PHYSMEM_H
+#define PHYSMEM_H
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <inttypes.h>
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#if defined(HAVE_PHYSMEM_SYSCTL) || defined(HAVE_NCPU_SYSCTL)
+# ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+# endif
+# ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+# endif
+#endif
+
+
+/// \brief Get the amount of physical memory in bytes
+///
+/// \return Amount of physical memory in bytes. On error, zero is
+/// returned.
+static inline uint64_t
+physmem(void)
+{
+ uint64_t ret = 0;
+
+#if defined(HAVE_PHYSMEM_SYSCONF)
+ const long pagesize = sysconf(_SC_PAGESIZE);
+ const long pages = sysconf(_SC_PHYS_PAGES);
+ if (pagesize != -1 || pages != -1)
+ // According to docs, pagesize * pages can overflow.
+ // Simple case is 32-bit box with 4 GiB or more RAM,
+ // which may report exactly 4 GiB of RAM, and "long"
+ // being 32-bit will overflow. Casting to uint64_t
+ // hopefully avoids overflows in the near future.
+ ret = (uint64_t)(pagesize) * (uint64_t)(pages);
+
+#elif defined(HAVE_PHYSMEM_SYSCTL)
+ int name[2] = { CTL_HW, HW_PHYSMEM };
+ unsigned long mem;
+ size_t mem_ptr_size = sizeof(mem);
+ if (!sysctl(name, 2, &mem, &mem_ptr_size, NULL, NULL)) {
+ // Some systems use unsigned int as the "return value".
+ // This makes a difference on 64-bit boxes.
+ if (mem_ptr_size != sizeof(mem)) {
+ if (mem_ptr_size == sizeof(unsigned int))
+ ret = *(unsigned int *)(&mem);
+ } else {
+ ret = mem;
+ }
+ }
+#endif
+
+ return ret;
+}
+
+#endif
diff --git a/src/common/sysdefs.h b/src/common/sysdefs.h
new file mode 100644
index 0000000..b4ba8a5
--- /dev/null
+++ b/src/common/sysdefs.h
@@ -0,0 +1,100 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file sysdefs.h
+/// \brief Common includes, definitions, system-specific things etc.
+///
+/// This file is used also by the lzma command line tool, that's why this
+/// file is separate from common.h.
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SYSDEFS_H
+#define LZMA_SYSDEFS_H
+
+//////////////
+// Includes //
+//////////////
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "lzma.h"
+
+#include <stdlib.h>
+
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# if ! HAVE__BOOL
+typedef unsigned char _Bool;
+# endif
+# define bool _Bool
+# define false 0
+# define true 1
+# define __bool_true_false_are_defined 1
+#endif
+
+#ifdef HAVE_ASSERT_H
+# include <assert.h>
+#else
+# ifdef NDEBUG
+# define assert(x)
+# else
+ // TODO: Pretty bad assert() macro.
+# define assert(x) (!(x) && abort())
+# endif
+#endif
+
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+
+#ifdef HAVE_MEMORY_H
+# include <memory.h>
+#endif
+
+
+////////////
+// Macros //
+////////////
+
+#ifndef HAVE_MEMCPY
+# define memcpy(dest, src, n) bcopy(src, dest, n)
+#endif
+
+#ifndef HAVE_MEMMOVE
+# define memmove(dest, src, n) bcopy(src, dest, n)
+#endif
+
+#ifdef HAVE_MEMSET
+# define memzero(s, n) memset(s, 0, n)
+#else
+# define memzero(s, n) bzero(s, n)
+#endif
+
+#ifndef MIN
+# define MIN(x, y) ((x) < (y) ? (x) : (y))
+#endif
+
+#ifndef MAX
+# define MAX(x, y) ((x) > (y) ? (x) : (y))
+#endif
+
+#endif
diff --git a/src/liblzma/Makefile.am b/src/liblzma/Makefile.am
new file mode 100644
index 0000000..78a072f
--- /dev/null
+++ b/src/liblzma/Makefile.am
@@ -0,0 +1,47 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+SUBDIRS = api common check
+
+lib_LTLIBRARIES = liblzma.la
+liblzma_la_SOURCES =
+liblzma_la_LDFLAGS = -version-info 0:0:0
+
+liblzma_la_LIBADD = \
+ common/libcommon.la \
+ check/libcheck.la
+
+if COND_FILTER_LZMA
+SUBDIRS += lz lzma rangecoder
+liblzma_la_LIBADD += \
+ lz/liblz.la \
+ lzma/liblzma4.la \
+ rangecoder/librangecoder.la
+endif
+
+if COND_FILTER_SUBBLOCK
+SUBDIRS += subblock
+liblzma_la_LIBADD += subblock/libsubblock.la
+endif
+
+if COND_MAIN_SIMPLE
+SUBDIRS += simple
+liblzma_la_LIBADD += simple/libsimple.la
+endif
+
+
+## pkg-config
+pkgconfigdir = $(libdir)/pkgconfig
+pkgconfig_DATA = lzma.pc
+EXTRA_DIST = lzma.pc.in
diff --git a/src/liblzma/api/Makefile.am b/src/liblzma/api/Makefile.am
new file mode 100644
index 0000000..7f5e6de
--- /dev/null
+++ b/src/liblzma/api/Makefile.am
@@ -0,0 +1,39 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+nobase_include_HEADERS = \
+ lzma.h \
+ lzma/alignment.h \
+ lzma/alone.h \
+ lzma/auto.h \
+ lzma/base.h \
+ lzma/block.h \
+ lzma/check.h \
+ lzma/copy.h \
+ lzma/delta.h \
+ lzma/extra.h \
+ lzma/filter.h \
+ lzma/index.h \
+ lzma/info.h \
+ lzma/init.h \
+ lzma/lzma.h \
+ lzma/memlimit.h \
+ lzma/metadata.h \
+ lzma/raw.h \
+ lzma/simple.h \
+ lzma/stream.h \
+ lzma/stream_flags.h \
+ lzma/subblock.h \
+ lzma/version.h \
+ lzma/vli.h
diff --git a/src/liblzma/api/lzma.h b/src/liblzma/api/lzma.h
new file mode 100644
index 0000000..186ae12
--- /dev/null
+++ b/src/liblzma/api/lzma.h
@@ -0,0 +1,122 @@
+/**
+ * \file lzma.h
+ * \brief The public API of liblzma
+ *
+ * liblzma is a LZMA compression library with a zlib-like API.
+ * liblzma is based on LZMA SDK found from http://7-zip.org/sdk.html.
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H
+#define LZMA_H
+
+/********************
+ * External headers *
+ ********************/
+
+/* size_t */
+#include <sys/types.h>
+
+/* NULL */
+#include <stddef.h>
+
+/* uint8_t, uint32_t, uint64_t, UINT32_C, UINT64_C, UINT64_MAX. */
+#include <inttypes.h>
+
+
+/******************
+ * GCC extensions *
+ ******************/
+
+/*
+ * GCC extensions are used conditionally in the public API. It doesn't
+ * break anything if these are sometimes enabled and sometimes not, only
+ * affects warnings and optimizations.
+ */
+#if defined(__GNUC__) && __GNUC__ >= 3
+# ifndef lzma_attribute
+# define lzma_attribute(attr) __attribute__(attr)
+# endif
+# ifndef lzma_restrict
+# define lzma_restrict __restrict__
+# endif
+#else
+# ifndef lzma_attribute
+# define lzma_attribute(attr)
+# endif
+# ifndef lzma_restrict
+# define lzma_restrict
+# endif
+#endif
+
+
+/**************
+ * Subheaders *
+ **************/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Subheaders check that this is defined. It is to prevent including
+ * them directly from applications.
+ */
+#define LZMA_H_INTERNAL 1
+
+/* Basic features */
+#include "lzma/init.h"
+#include "lzma/base.h"
+#include "lzma/vli.h"
+#include "lzma/filter.h"
+#include "lzma/check.h"
+
+/* Filters */
+#include "lzma/copy.h"
+#include "lzma/subblock.h"
+#include "lzma/simple.h"
+#include "lzma/delta.h"
+#include "lzma/lzma.h"
+
+/* Container formats and Metadata */
+#include "lzma/block.h"
+#include "lzma/index.h"
+#include "lzma/extra.h"
+#include "lzma/metadata.h"
+#include "lzma/stream.h"
+#include "lzma/alone.h"
+#include "lzma/raw.h"
+#include "lzma/auto.h"
+
+/* Advanced features */
+#include "lzma/info.h"
+#include "lzma/alignment.h"
+#include "lzma/stream_flags.h"
+#include "lzma/memlimit.h"
+
+/* Version number */
+#include "lzma/version.h"
+
+/*
+ * All subheaders included. Undefine LZMA_H_INTERNAL to prevent applications
+ * re-including the subheaders.
+ */
+#undef LZMA_H_INTERNAL
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ifndef LZMA_H */
diff --git a/src/liblzma/api/lzma/alignment.h b/src/liblzma/api/lzma/alignment.h
new file mode 100644
index 0000000..6672656
--- /dev/null
+++ b/src/liblzma/api/lzma/alignment.h
@@ -0,0 +1,60 @@
+/**
+ * \file lzma/alignment.h
+ * \brief Calculating input and output alignment of filter chains
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Calculates the preferred alignment of the input data
+ *
+ * FIXME desc
+ */
+extern uint32_t lzma_alignment_input(
+ const lzma_options_filter *filters, uint32_t guess);
+
+
+/**
+ * \brief Calculates the alignment of the encoded output
+ *
+ * Knowing the alignment of the output data is useful e.g. in the Block
+ * encoder which tries to align the Compressed Data field optimally.
+ *
+ * \param filters Pointer to lzma_options_filter array, whose last
+ * member must have .id = LZMA_VLI_VALUE_UNKNOWN.
+ * \param guess The value to return if the alignment of the output
+ * is the same as the alignment of the input data.
+ * If you want to always detect this special case,
+ * this guess to zero; this function never returns
+ * zero unless guess is zero.
+ *
+ * \return In most cases, a small positive integer is returned;
+ * for optimal use, the encoded output of this filter
+ * chain should start at on offset that is a multiple of
+ * the returned integer value.
+ *
+ * If the alignment of the output is the same as the input
+ * data (which this function cannot know), \a guess is
+ * returned.
+ *
+ * If an error occurs (that is, unknown Filter IDs or filter
+ * options), UINT32_MAX is returned.
+ */
+extern uint32_t lzma_alignment_output(
+ const lzma_options_filter *filters, uint32_t guess);
diff --git a/src/liblzma/api/lzma/alone.h b/src/liblzma/api/lzma/alone.h
new file mode 100644
index 0000000..1a6b8e2
--- /dev/null
+++ b/src/liblzma/api/lzma/alone.h
@@ -0,0 +1,82 @@
+/**
+ * \file lzma/alone.h
+ * \brief Handling of the legacy LZMA_Alone format
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Options for files in the LZMA_Alone format
+ */
+typedef struct {
+ /**
+ * \brief Uncompressed Size and usage of End of Payload Marker
+ *
+ * In contrast to .lzma Blocks, LZMA_Alone format cannot have both
+ * uncompressed size field in the header and end of payload marker.
+ * If you don't know the uncompressed size beforehand, set it to
+ * LZMA_VLI_VALUE_UNKNOWN and liblzma will embed end of payload
+ * marker.
+ */
+ lzma_vli uncompressed_size;
+
+ /**
+ * \brief LZMA options
+ *
+ * The LZMA_Alone format supports only one filter: the LZMA filter.
+ *
+ * \note There exists also an undocumented variant of the
+ * LZMA_Alone format, which uses the x86 filter in
+ * addition to LZMA. This format was never supported
+ * by LZMA Utils and is not supported by liblzma either.
+ */
+ lzma_options_lzma lzma;
+
+} lzma_options_alone;
+
+
+/**
+ * \brief Initializes LZMA_Alone encoder
+ *
+ * LZMA_Alone files have the suffix .lzma like the .lzma Stream files.
+ * LZMA_Alone format supports only one filter, the LZMA filter. There is
+ * no support for integrity checks like CRC32.
+ *
+ * Use this format if and only if you need to create files readable by
+ * legacy LZMA tools.
+ *
+ * LZMA_Alone encoder doesn't support LZMA_SYNC_FLUSH or LZMA_FULL_FLUSH.
+ *
+ * \return - LZMA_OK
+ * - LZMA_MEM_ERROR
+ * - LZMA_PROG_ERROR
+ */
+extern lzma_ret lzma_alone_encoder(
+ lzma_stream *strm, const lzma_options_alone *options);
+
+
+/**
+ * \brief Initializes decoder for LZMA_Alone file
+ *
+ * The LZMA_Alone decoder supports LZMA_SYNC_FLUSH.
+ *
+ * \return - LZMA_OK
+ * - LZMA_MEM_ERROR
+ */
+extern lzma_ret lzma_alone_decoder(lzma_stream *strm);
diff --git a/src/liblzma/api/lzma/auto.h b/src/liblzma/api/lzma/auto.h
new file mode 100644
index 0000000..327e726
--- /dev/null
+++ b/src/liblzma/api/lzma/auto.h
@@ -0,0 +1,41 @@
+/**
+ * \file lzma/auto.h
+ * \brief Decoder with automatic file format detection
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Decode .lzma Streams and LZMA_Alone files with autodetection
+ *
+ * Autodetects between the .lzma Stream and LZMA_Alone formats, and
+ * calls lzma_stream_decoder_init() or lzma_alone_decoder_init() once
+ * the type of the file has been detected.
+ *
+ * \param strm Pointer to propertily prepared lzma_stream
+ * \param header Pointer to hold a pointer to Extra Records read
+ * from the Header Metadata Block. Use NULL if
+ * you don't care about Extra Records.
+ * \param footer Same as header, but for Footer Metadata Block.
+ *
+ * \return - LZMA_OK: Initialization was successful.
+ * - LZMA_MEM_ERROR: Cannot allocate memory.
+ */
+extern lzma_ret lzma_auto_decoder(lzma_stream *strm,
+ lzma_extra **header, lzma_extra **footer);
diff --git a/src/liblzma/api/lzma/base.h b/src/liblzma/api/lzma/base.h
new file mode 100644
index 0000000..53cf89f
--- /dev/null
+++ b/src/liblzma/api/lzma/base.h
@@ -0,0 +1,410 @@
+/**
+ * \file lzma/base.h
+ * \brief Data types and functions used in many places of the public API
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Boolean
+ *
+ * This is here because C89 doesn't have stdbool.h. To set a value for
+ * variables having type lzma_bool, you can use
+ * - C99's `true' and `false' from stdbool.h;
+ * - C++'s internal `true' and `false'; or
+ * - integers one (true) and zero (false).
+ */
+typedef unsigned char lzma_bool;
+
+
+/**
+ * \brief Return values used by several functions in liblzma
+ *
+ * Check the descriptions of specific functions to find out which return
+ * values they can return and the exact meanings of the values in every
+ * situation. The descriptions given here are only suggestive.
+ */
+typedef enum {
+ LZMA_OK = 0,
+ /**<
+ * \brief Operation completed successfully
+ */
+
+ LZMA_STREAM_END = 1,
+ /**<
+ * \brief End of stream was reached
+ *
+ * The application should pick the last remaining output
+ * bytes from strm->next_out.
+ */
+
+ LZMA_PROG_ERROR = -2,
+ /**<
+ * \brief Programming error
+ *
+ * This indicates that the arguments given to the function are
+ * invalid or the internal state of the decoder is corrupt.
+ * - Function arguments are invalid or the structures
+ * pointed by the argument pointers are invalid
+ * e.g. if strm->next_out has been set to NULL and
+ * strm->avail_out > 0 when calling lzma_code().
+ * - lzma_* functions have been called in wrong order
+ * e.g. lzma_code() was called right after lzma_end().
+ * - If errors occur randomly, the reason might be flaky
+ * hardware.
+ *
+ * If you think that your code is correct, this error code
+ * can be a sign of a bug in liblzma. See the documentation
+ * how to report bugs.
+ */
+
+ LZMA_DATA_ERROR = -3,
+ /**<
+ * \brief Data is corrupt
+ *
+ * - Encoder: The input size doesn't match the uncompressed
+ * size given to lzma_*_encoder_init().
+ * - Decoder: The input is corrupt. This includes corrupted
+ * header, corrupted compressed data, and unmatching
+ * integrity Check.
+ *
+ * \todo What can be done if encoder returns this?
+ * Probably can continue by fixing the input
+ * amount, but make sure.
+ */
+
+ LZMA_MEM_ERROR = -4,
+ /**<
+ * \brief Cannot allocate memory
+ *
+ * Memory allocation failed.
+ */
+
+ LZMA_BUF_ERROR = -5,
+ /**<
+ * \brief No progress is possible
+ *
+ * This may happen when avail_in or avail_out is zero.
+ *
+ * \note This error is not fatal. Coding can continue
+ * normally once the reason for this error has
+ * been fixed.
+ */
+
+ LZMA_HEADER_ERROR = -6,
+ /**<
+ * \brief Invalid or unsupported header
+ *
+ * Invalid or unsupported options, for example
+ * - unsupported filter(s) or filter options; or
+ * - reserved bits set in headers (decoder only).
+ *
+ * Rebuilding liblzma with more features enabled, or
+ * upgrading to a newer version of liblzma may help.
+ */
+
+ LZMA_UNSUPPORTED_CHECK = -7,
+ /**<
+ * \brief Check type is unknown
+ *
+ * The type of Check is not supported, and thus the Check
+ * cannot be calculated. In the encoder, this is an error.
+ * In the decoder, this is only a warning and decoding can
+ * still proceed normally (but the Check is ignored).
+ */
+} lzma_ret;
+
+
+/**
+ * \brief The `action' argument for lzma_code()
+ */
+typedef enum {
+ LZMA_RUN = 0,
+ /**<
+ * Encoder: Encode as much input as possible. Some internal
+ * buffering will probably be done (depends on the filter
+ * chain in use), which causes latency: the input used won't
+ * usually be decodeable from the output of the same
+ * lzma_code() call.
+ *
+ * Decoder: Decode as much input as possible and produce as
+ * much output as possible. This action provides best
+ * throughput, but may introduce latency, because the
+ * decoder may decode more data into its internal buffers
+ * than that fits into next_out.
+ */
+
+ LZMA_SYNC_FLUSH = 1,
+ /**<
+ * Encoder: Makes all the data given to liblzma via next_in
+ * available in next_out without resetting the filters. Call
+ * lzma_code() with LZMA_SYNC_FLUSH until it returns
+ * LZMA_STREAM_END. Then continue encoding normally.
+ *
+ * \note Synchronous flushing is supported only by
+ * some filters. Some filters support it only
+ * partially.
+ *
+ * Decoder: Asks the decoder to decode only as much as is
+ * needed to fill next_out. This decreases latency with some
+ * filters, but is likely to decrease also throughput. It is
+ * a good idea to use this flag only when it is likely that
+ * you don't need more output soon.
+ *
+ * \note With decoder, this is not comparable to
+ * zlib's Z_SYNC_FLUSH.
+ */
+
+ LZMA_FULL_FLUSH = 2,
+ /**<
+ * Finishes encoding of the current Data Block. All the input
+ * data going to the current Data Block must have been given
+ * to the encoder (the last bytes can still be pending in
+ * next_in). Call lzma_code() with LZMA_FULL_FLUSH until
+ * it returns LZMA_STREAM_END. Then continue normally with
+ * LZMA_RUN or finish the Stream with LZMA_FINISH.
+ *
+ * This action is supported only by Multi-Block Stream
+ * encoder. If there is no unfinished Data Block, no empty
+ * Data Block is created.
+ */
+
+ LZMA_FINISH = 3
+ /**<
+ * Finishes the encoding operation. All the input data must
+ * have been given to the encoder (the last bytes can still
+ * be pending in next_in). Call lzma_code() with LZMA_FINISH
+ * until it returns LZMA_STREAM_END.
+ *
+ * This action is not supported by decoders.
+ */
+} lzma_action;
+
+
+/**
+ * \brief Custom functions for memory handling
+ *
+ * A pointer to lzma_allocator may be passed via lzma_stream structure
+ * to liblzma. The library will use these functions for memory handling
+ * instead of the default malloc() and free().
+ *
+ * liblzma doesn't make an internal copy of lzma_allocator. Thus, it is
+ * OK to change these function pointers in the middle of the coding
+ * process, but obviously it must be done carefully to make sure that the
+ * replacement `free' can deallocate memory allocated by the earlier
+ * `alloc' function(s).
+ */
+typedef struct {
+ /**
+ * \brief Pointer to custom memory allocation function
+ *
+ * Set this to point to your custom memory allocation function.
+ * It can be useful for example if you want to limit how much
+ * memory liblzma is allowed to use: for this, you may use
+ * a pointer to lzma_memory_alloc().
+ *
+ * If you don't want a custom allocator, but still want
+ * custom free(), set this to NULL and liblzma will use
+ * the standard malloc().
+ *
+ * \param opaque lzma_allocator.opaque (see below)
+ * \param nmemb Number of elements like in calloc().
+ * liblzma will always set nmemb to 1.
+ * This argument exists only for
+ * compatibility with zlib and libbzip2.
+ * \param size Size of an element in bytes.
+ * liblzma never sets this to zero.
+ *
+ * \return Pointer to the beginning of a memory block of
+ * size nmemb * size, or NULL if allocation fails
+ * for some reason. When allocation fails, functions
+ * of liblzma return LZMA_MEM_ERROR.
+ */
+ void *(*alloc)(void *opaque, size_t nmemb, size_t size);
+
+ /**
+ * \brief Pointer to custom memory freeing function
+ *
+ * Set this to point to your custom memory freeing function.
+ * If lzma_memory_alloc() is used as allocator, this should
+ * be set to lzma_memory_free().
+ *
+ * If you don't want a custom freeing function, but still
+ * want a custom allocator, set this to NULL and liblzma
+ * will use the standard free().
+ *
+ * \param opaque lzma_allocator.opaque (see below)
+ * \param ptr Pointer returned by
+ * lzma_allocator.alloc(), or when it
+ * is set to NULL, a pointer returned
+ * by the standard malloc().
+ */
+ void (*free)(void *opaque, void *ptr);
+
+ /**
+ * \brief Pointer passed to .alloc() and .free()
+ *
+ * opaque is passed as the first argument to lzma_allocator.alloc()
+ * and lzma_allocator.free(). This intended to ease implementing
+ * custom memory allocation functions for use with liblzma.
+ *
+ * When using lzma_memory_alloc() and lzma_memory_free(), opaque
+ * must point to lzma_memory_limitter structure allocated and
+ * initialized with lzma_memory_limitter_create().
+ *
+ * If you don't need this, you should set it to NULL.
+ */
+ void *opaque;
+
+} lzma_allocator;
+
+
+/**
+ * \brief Internal data structure
+ *
+ * The contents of this structure is not visible outside the library.
+ */
+typedef struct lzma_internal_s lzma_internal;
+
+
+/**
+ * \brief Passing data to and from liblzma
+ *
+ * The lzma_stream structure is used for
+ * - passing pointers to input and output buffers to liblzma;
+ * - defining custom memory hander functions; and
+ * - holding a pointer to coder-specific internal data structures.
+ *
+ * Before calling any of the lzma_*_init() functions the first time,
+ * the application must reset lzma_stream to LZMA_STREAM_INIT. The
+ * lzma_*_init() function will verify the options, allocate internal
+ * data structures and store pointer to them into `internal'. Finally
+ * total_in and total_out are reset to zero. In contrast to zlib,
+ * next_in and avail_in are ignored by the initialization functions.
+ *
+ * The actual coding is done with the lzma_code() function. Application
+ * must update next_in, avail_in, next_out, and avail_out between
+ * calls to lzma_decode() just like with zlib.
+ *
+ * In contrast to zlib, even the decoder requires that there always
+ * is at least one byte space in next_out; if avail_out == 0,
+ * LZMA_BUF_ERROR is returned immediatelly. This shouldn't be a problem
+ * for most applications that already use zlib, but it's still worth
+ * checking your application.
+ *
+ * Application may modify values of total_in and total_out as it wants.
+ * They are updated by liblzma to match the amount of data read and
+ * written, but liblzma doesn't use the values internally.
+ *
+ * Application must not touch the `internal' pointer.
+ */
+typedef struct {
+ uint8_t *next_in; /**< Pointer to the next input byte. */
+ size_t avail_in; /**< Number of available input bytes in next_in. */
+ uint64_t total_in; /**< Total number of bytes read by liblzma. */
+
+ uint8_t *next_out; /**< Pointer to the next output position. */
+ size_t avail_out; /**< Amount of free space in next_out. */
+ uint64_t total_out; /**< Total number of bytes written by liblzma. */
+
+ /**
+ * Custom memory allocation functions. Set to NULL to use
+ * the standard malloc() and free().
+ */
+ lzma_allocator *allocator;
+
+ /** Internal state is not visible to outsiders. */
+ lzma_internal *internal;
+
+} lzma_stream;
+
+
+/**
+ * \brief Initialization for lzma_stream
+ *
+ * When you declare an instance of lzma_stream, you can immediatelly
+ * initialize it so that initialization functions know that no memory
+ * has been allocated yet:
+ *
+ * lzma_stream strm = LZMA_STREAM_INIT;
+ */
+#define LZMA_STREAM_INIT { NULL, 0, 0, NULL, 0, 0, NULL, NULL }
+
+
+/**
+ * \brief Initialization for lzma_stream
+ *
+ * This is like LZMA_STREAM_INIT, but this can be used when the lzma_stream
+ * has already been allocated:
+ *
+ * lzma_stream *strm = malloc(sizeof(lzma_stream));
+ * if (strm == NULL)
+ * return LZMA_MEM_ERROR;
+ * *strm = LZMA_STREAM_INIT_VAR;
+ */
+extern const lzma_stream LZMA_STREAM_INIT_VAR;
+
+
+/**
+ * \brief Encodes or decodes data
+ *
+ * Once the lzma_stream has been successfully initialized (e.g. with
+ * lzma_stream_encoder_single()), the actual encoding or decoding is
+ * done using this function.
+ *
+ * \return Some coders may have more exact meaning for different return
+ * values, which are mentioned separately in the description of
+ * the initialization functions. Here are the typical meanings:
+ * - LZMA_OK: So far all good.
+ * - LZMA_STREAM_END:
+ * - Encoder: LZMA_SYNC_FLUSH, LZMA_FULL_FLUSH, or
+ * LZMA_FINISH completed.
+ * - Decoder: End of uncompressed data was reached.
+ * - LZMA_BUF_ERROR: Unable to progress. Provide more input or
+ * output space, and call this function again. This cannot
+ * occur if both avail_in and avail_out were non-zero (or
+ * there's a bug in liblzma).
+ * - LZMA_MEM_ERROR: Unable to allocate memory. Due to lazy
+ * programming, the coding cannot continue even if the
+ * application could free more memory. The next call must
+ * be lzma_end() or some initialization function.
+ * - LZMA_DATA_ERROR:
+ * - Encoder: Filter(s) cannot process the given data.
+ * - Decoder: Compressed data is corrupt.
+ * - LZMA_HEADER_ERROR: Unsupported options. Rebuilding liblzma
+ * with more features enabled or upgrading to a newer version
+ * may help, although usually this is a sign of invalid options
+ * (encoder) or corrupted input data (decoder).
+ * - LZMA_PROG_ERROR: Invalid arguments or the internal state
+ * of the coder is corrupt.
+ */
+extern lzma_ret lzma_code(lzma_stream *strm, lzma_action action);
+
+
+/**
+ * \brief Frees memory allocated for the coder data structures
+ *
+ * \param strm Pointer to lzma_stream that is at least initialized
+ * with LZMA_STREAM_INIT.
+ *
+ * \note zlib indicates an error if application end()s unfinished
+ * stream. liblzma doesn't do this, and assumes that
+ * application knows what it is doing.
+ */
+extern void lzma_end(lzma_stream *strm);
diff --git a/src/liblzma/api/lzma/block.h b/src/liblzma/api/lzma/block.h
new file mode 100644
index 0000000..210c1d8
--- /dev/null
+++ b/src/liblzma/api/lzma/block.h
@@ -0,0 +1,409 @@
+/**
+ * \file lzma/block.h
+ * \brief .lzma Block handling
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Options for the Block Header encoder and decoder
+ *
+ * Different things use different parts of this structure. Some read
+ * some members, other functions write, and some do both. Only the
+ * members listed for reading need to be initialized when the specified
+ * functions are called. The members marked for writing will be assigned
+ * new values at some point either by calling the given function or by
+ * later calls to lzma_code().
+ */
+typedef struct {
+ /**
+ * \brief Type of integrity Check
+ *
+ * The type of the integrity Check is not stored into the Block
+ * Header, thus its value must be provided also when decoding.
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_check_type check;
+
+ /**
+ * \brief Precense of CRC32 of the Block Header
+ *
+ * Set this to true if CRC32 of the Block Header should be
+ * calculated and stored in the Block Header.
+ *
+ * There is no way to autodetect if CRC32 is present in the Block
+ * Header, thus this information must be provided also when decoding.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder()
+ * - lzma_block_header_decoder()
+ */
+ lzma_bool has_crc32;
+
+ /**
+ * \brief Usage of End of Payload Marker
+ *
+ * If this is true, End of Payload Marker is used even if
+ * Uncompressed Size is known.
+ *
+ * Read by:
+ * - lzma_block_header_encoder()
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ *
+ * Written by:
+ * - lzma_block_header_decoder()
+ */
+ lzma_bool has_eopm;
+
+ /**
+ * \brief True if the Block is a Metadata Block
+ *
+ * If this is true, the Metadata bit will be set in the Block Header.
+ * It is up to the application to store correctly formatted data
+ * into Metadata Block.
+ *
+ * Read by:
+ * - lzma_block_header_encoder()
+ *
+ * Written by:
+ * - lzma_block_header_decoder()
+ */
+ lzma_bool is_metadata;
+
+ /**
+ * \brief True if Uncompressed Size is in Block Footer
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_bool has_uncompressed_size_in_footer;
+
+ /**
+ * \brief True if Backward Size is in Block Footer
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_bool has_backward_size;
+
+ /**
+ * \brief True if Block coder should take care of Padding
+ *
+ * In liblzma, Stream decoder sets this to true when decoding
+ * Header Metadata Block or Data Blocks from Multi-Block Stream,
+ * and to false when decoding Single-Block Stream or Footer
+ * Metadata Block from a Multi-Block Stream.
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_bool handle_padding;
+
+ /**
+ * \brief Size of the Compressed Data in bytes
+ *
+ * Usually you don't know this value when encoding in streamed mode.
+ * In non-streamed mode you can reserve space for this field when
+ * encoding the Block Header the first time, and then re-encode the
+ * Block Header and copy it over the original one after the encoding
+ * of the Block has been finished.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder()
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ *
+ * Written by:
+ * - lzma_block_header_decoder()
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_vli compressed_size;
+
+ /**
+ * \brief Uncompressed Size in bytes
+ *
+ * Encoder: If this value is not LZMA_VLI_VALUE_UNKNOWN, it is stored
+ * to the Uncompressed Size field in the Block Header. The real
+ * uncompressed size of the data being compressed must match
+ * the Uncompressed Size or LZMA_HEADER_ERROR is returned.
+ *
+ * If Uncompressed Size is unknown, End of Payload Marker must
+ * be used. If uncompressed_size == LZMA_VLI_VALUE_UNKNOWN and
+ * has_eopm == 0, LZMA_HEADER_ERROR will be returned.
+ *
+ * Decoder: If this value is not LZMA_VLI_VALUE_UNKNOWN, it is
+ * compared to the real Uncompressed Size. If they do not match,
+ * LZMA_HEADER_ERROR is returned.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder()
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ *
+ * Written by:
+ * - lzma_block_header_decoder()
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_vli uncompressed_size;
+
+ /**
+ * \brief Number of bytes to reserve for Compressed Size
+ *
+ * This is useful if you want to be able to store the Compressed Size
+ * to the Block Header, but you don't know it when starting to encode.
+ * Setting this to non-zero value at maximum of LZMA_VLI_BYTES_MAX,
+ * the Block Header encoder will force the Compressed Size field to
+ * occupy specified number of bytes. You can later rewrite the Block
+ * Header to contain correct information by using otherwise identical
+ * lzma_options_block structure except the correct compressed_size.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder()
+ *
+ * Written by:
+ * - lzma_block_header_decoder()
+ */
+ uint32_t compressed_reserve;
+
+ /**
+ * \brief Number of bytes to reserve for Uncompressed Size
+ *
+ * See the description of compressed_size above.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder()
+ *
+ * Written by:
+ * - lzma_block_header_decoder()
+ */
+ uint32_t uncompressed_reserve;
+
+ /**
+ * \brief Total Size of the Block in bytes
+ *
+ * This is useful in the decoder, which can verify the Total Size
+ * if it is known from Index.
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ *
+ * Written by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_vli total_size;
+
+ /**
+ * \brief Upper limit of Total Size
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_vli total_limit;
+
+ /**
+ * \brief Upper limit of Uncompressed Size
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ */
+ lzma_vli uncompressed_limit;
+
+ /**
+ * \brief Array of filters
+ *
+ * There can be at maximum of seven filters. The end of the array
+ * is marked with .id = LZMA_VLI_VALUE_UNKNOWN. Minimum number of
+ * filters is zero; in that case, an implicit Copy filter is used.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder()
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ *
+ * Written by:
+ * - lzma_block_header_decoder(): Note that this does NOT free()
+ * the old filter options structures. If decoding fails, the
+ * caller must take care of freeing the options structures
+ * that may have been allocated and decoded before the error
+ * occurred.
+ */
+ lzma_options_filter filters[8];
+
+ /**
+ * \brief Size of the Padding field
+ *
+ * The Padding field exist to allow aligning the Compressed Data field
+ * optimally in the Block. See lzma_options_stream.alignment in
+ * stream.h for more information.
+ *
+ * If you want the Block Header encoder to automatically calculate
+ * optimal size for the Padding field by looking at the information
+ * in filters[], set this to LZMA_BLOCK_HEADER_PADDING_AUTO. In that
+ * case, you must also set the aligmnet variable to tell the the
+ * encoder the aligmnet of the beginning of the Block Header.
+ *
+ * The decoder never sets this to LZMA_BLOCK_HEADER_PADDING_AUTO.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder(): Note that this doesn't
+ * accept LZMA_BLOCK_HEADER_PADDING_AUTO.
+ *
+ * Written by (these never set padding to
+ * LZMA_BLOCK_HEADER_PADDING_AUTO):
+ * - lzma_block_header_size()
+ * - lzma_block_header_decoder()
+ */
+ int32_t padding;
+# define LZMA_BLOCK_HEADER_PADDING_AUTO (-1)
+# define LZMA_BLOCK_HEADER_PADDING_MIN 0
+# define LZMA_BLOCK_HEADER_PADDING_MAX 31
+
+ /**
+ * \brief Alignment of the beginning of the Block Header
+ *
+ * This variable is read only if padding has been set to
+ * LZMA_BLOCK_HEADER_PADDING_AUTO.
+ *
+ * Read by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_encoder()
+ */
+ uint32_t alignment;
+
+ /**
+ * \brief Size of the Block Header
+ *
+ * Read by:
+ * - lzma_block_encoder()
+ * - lzma_block_decoder()
+ *
+ * Written by:
+ * - lzma_block_header_size()
+ * - lzma_block_header_decoder()
+ */
+ uint32_t header_size;
+
+} lzma_options_block;
+
+
+/**
+ * \brief Calculates the size of Header Padding and Block Header
+ *
+ * \return - LZMA_OK: Size calculated successfully and stored to
+ * options->header_size.
+ * - LZMA_HEADER_ERROR: Unsupported filters or filter options.
+ * - LZMA_PROG_ERROR: Invalid options
+ *
+ * \note This doesn't check that all the options are valid i.e. this
+ * may return LZMA_OK even if lzma_block_header_encode() or
+ * lzma_block_encoder() would fail.
+ */
+extern lzma_ret lzma_block_header_size(lzma_options_block *options);
+
+
+/**
+ * \brief Encodes Block Header
+ *
+ * Encoding of the Block options is done with a single call instead of
+ * first initializing and then doing the actual work with lzma_code().
+ *
+ * \param out Beginning of the output buffer. This must be
+ * at least options->header_size bytes.
+ * \param options Block options to be encoded.
+ *
+ * \return - LZMA_OK: Encoding was successful. options->header_size
+ * bytes were written to output buffer.
+ * - LZMA_HEADER_ERROR: Invalid or unsupported options.
+ * - LZMA_PROG_ERROR
+ */
+extern lzma_ret lzma_block_header_encode(
+ uint8_t *out, const lzma_options_block *options);
+
+
+/**
+ * \brief Initializes Block Header decoder
+ *
+ * Because the results of this decoder are placed into *options,
+ * strm->next_in, strm->avail_in, and strm->total_in are not used.
+ *
+ * The only valid `action' with lzma_code() is LZMA_RUN.
+ *
+ * \return - LZMA_OK: Encoding was successful. options->header_size
+ * bytes were written to output buffer.
+ * - LZMA_HEADER_ERROR: Invalid or unsupported options.
+ * - LZMA_PROG_ERROR
+ */
+extern lzma_ret lzma_block_header_decoder(
+ lzma_stream *strm, lzma_options_block *options);
+
+
+/**
+ * \brief Initializes .lzma Block encoder
+ *
+ * This function is required for multi-thread encoding. It may also be
+ * useful when implementing custom file formats.
+ *
+ * \return - LZMA_OK: All good, continue with lzma_code().
+ * - LZMA_MEM_ERROR
+ * - LZMA_HEADER_ERROR
+ * - LZMA_DATA_ERROR: Limits (total_limit and uncompressed_limit)
+ * have been reached already.
+ * - LZMA_UNSUPPORTED_CHECK: options->check specfies a Check
+ * that is not supported by this buid of liblzma. Initializing
+ * the encoder failed.
+ * - LZMA_PROG_ERROR
+ *
+ * lzma_code() can return FIXME
+ */
+extern lzma_ret lzma_block_encoder(
+ lzma_stream *strm, lzma_options_block *options);
+
+
+/**
+ * \brief Initializes decoder for .lzma Block
+ *
+ * \return - LZMA_OK: All good, continue with lzma_code().
+ * - LZMA_UNSUPPORTED_CHECK: Initialization was successful, but
+ * the given Check type is not supported, thus Check will be
+ * ignored.
+ * - LZMA_PROG_ERROR
+ * - LZMA_MEM_ERROR
+ */
+extern lzma_ret lzma_block_decoder(
+ lzma_stream *strm, lzma_options_block *options);
diff --git a/src/liblzma/api/lzma/check.h b/src/liblzma/api/lzma/check.h
new file mode 100644
index 0000000..4a2a453
--- /dev/null
+++ b/src/liblzma/api/lzma/check.h
@@ -0,0 +1,128 @@
+/**
+ * \file lzma/check.h
+ * \brief Integrity checks
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Type of the Check
+ *
+ * The .lzma format supports multiple types of Checks that are calculated
+ * from the uncompressed data (unless it is empty; then it's calculated
+ * from Block Header).
+ */
+typedef enum {
+ LZMA_CHECK_NONE = 0,
+ /**<
+ * No Check is calculated.
+ *
+ * Size of the Check field: 0 bytes
+ */
+
+ LZMA_CHECK_CRC32 = 1,
+ /**<
+ * CRC32 using the polynomial from the IEEE 802.3 standard
+ *
+ * Size of the Check field: 4 bytes
+ */
+
+ LZMA_CHECK_CRC64 = 3,
+ /**<
+ * CRC64 using the polynomial from the ECMA-182 standard
+ *
+ * Size of the Check field: 8 bytes
+ */
+
+ LZMA_CHECK_SHA256 = 5
+ /**<
+ * SHA-256
+ *
+ * Size of the Check field: 32 bytes
+ */
+} lzma_check_type;
+
+
+/**
+ * \brief Maximum valid Check ID
+ *
+ * The .lzma file format specification specifies eight Check IDs (0-7). Some
+ * of them are only reserved i.e. no actual Check algorithm has been assigned.
+ * Still liblzma accepts any of these eight IDs for future compatibility
+ * when decoding files. If a valid but unsupported Check ID is detected,
+ * liblzma indicates a warning with LZMA_UNSUPPORTED_CHECK.
+ *
+ * FIXME bad desc
+ */
+#define LZMA_CHECK_ID_MAX 7
+
+
+/**
+ * \brief Check IDs supported by this liblzma build
+ *
+ * If lzma_available_checks[n] is true, the Check ID n is supported by this
+ * liblzma build. You can assume that LZMA_CHECK_NONE and LZMA_CHECK_CRC32
+ * are always available.
+ */
+extern const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1];
+
+
+/**
+ * \brief Size of the Check field with different Check IDs
+ *
+ * Although not all Check IDs have a check algorithm associated, the size of
+ * every Check is already frozen. This array contains the size (in bytes) of
+ * the Check field with specified Check ID. The values are taken from the
+ * section 2.2.2 of the .lzma file format specification:
+ * { 0, 4, 4, 8, 16, 32, 32, 64 }
+ */
+extern const uint32_t lzma_check_sizes[LZMA_CHECK_ID_MAX + 1];
+
+
+/**
+ * \brief Calculate CRC32
+ *
+ * Calculates CRC32 using the polynomial from the IEEE 802.3 standard.
+ *
+ * \param buf Pointer to the input buffer
+ * \param size Size of the input buffer
+ * \param crc Previously returned CRC value. This is used to
+ * calculate the CRC of a big buffer in smaller chunks.
+ * Set to zero when there is no previous value.
+ *
+ * \return Updated CRC value, which can be passed to this function
+ * again to continue CRC calculation.
+ */
+extern uint32_t lzma_crc32(const uint8_t *buf, size_t size, uint32_t crc);
+
+
+/**
+ * \brief Calculate CRC64
+ *
+ * Calculates CRC64 using the polynomial from the ECMA-182 standard.
+ *
+ * This function is used similarly to lzma_crc32(). See its documentation.
+ */
+extern uint64_t lzma_crc64(const uint8_t *buf, size_t size, uint64_t crc);
+
+
+/*
+ * SHA256 functions are currently not exported to public API.
+ * Contact the author if you think it should be.
+ */
diff --git a/src/liblzma/api/lzma/copy.h b/src/liblzma/api/lzma/copy.h
new file mode 100644
index 0000000..f561746
--- /dev/null
+++ b/src/liblzma/api/lzma/copy.h
@@ -0,0 +1,29 @@
+/**
+ * \file lzma/copy.h
+ * \brief Copy filter
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Filter ID
+ *
+ * Filter ID of the Copy filter. This is used as lzma_options_filter.id.
+ */
+#define LZMA_FILTER_COPY LZMA_VLI_C(0x00)
diff --git a/src/liblzma/api/lzma/delta.h b/src/liblzma/api/lzma/delta.h
new file mode 100644
index 0000000..58afec1
--- /dev/null
+++ b/src/liblzma/api/lzma/delta.h
@@ -0,0 +1,49 @@
+/**
+ * \file lzma/delta.h
+ * \brief Delta filter
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Filter ID
+ *
+ * Filter ID of the Delta filter. This is used as lzma_options_filter.id.
+ */
+#define LZMA_FILTER_DELTA LZMA_VLI_C(0x20)
+
+
+/**
+ * \brief Options for the Delta filter
+ *
+ * These options are needed by both encoder and decoder.
+ */
+typedef struct {
+ /**
+ * \brief Delta distance as bytes
+ *
+ * Examples:
+ * - 16-bit stereo audio: distance = 4 bytes
+ * - 24-bit RGB image data: distance = 3 bytes
+ */
+ uint32_t distance;
+# define LZMA_DELTA_DISTANCE_MIN 1
+# define LZMA_DELTA_DISTANCE_MAX 256
+
+} lzma_options_delta;
diff --git a/src/liblzma/api/lzma/extra.h b/src/liblzma/api/lzma/extra.h
new file mode 100644
index 0000000..29426a7
--- /dev/null
+++ b/src/liblzma/api/lzma/extra.h
@@ -0,0 +1,114 @@
+/**
+ * \file lzma/extra.h
+ * \brief Handling of Extra Records in Metadata
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/*
+ * Extra Record IDs
+ *
+ * See the .lzma file format specification for description what each
+ * Extra Record type exactly means.
+ *
+ * If you ever need to update .lzma files with Extra Records, note that
+ * the Record IDs are divided in two categories:
+ * - Safe-to-Copy Records may be preserved as is when the
+ * Stream is modified in ways that don't change the actual
+ * uncompressed data. Examples of such operatings include
+ * recompressing and adding, modifying, or deleting unrelated
+ * Extra Records.
+ * - Unsafe-to-Copy Records should be removed (and possibly
+ * recreated) when any kind of changes are made to the Stream.
+ */
+
+#define LZMA_EXTRA_PADDING 0x00
+#define LZMA_EXTRA_OPENPGP 0x01
+#define LZMA_EXTRA_FILTERS 0x02
+#define LZMA_EXTRA_COMMENT 0x03
+#define LZMA_EXTRA_CHECKS 0x04
+#define LZMA_EXTRA_FILENAME 0x05
+#define LZMA_EXTRA_MTIME 0x07
+#define LZMA_EXTRA_MTIME_HR 0x09
+#define LZMA_EXTRA_MIME_TYPE 0x0B
+#define LZMA_EXTRA_HOMEPAGE 0x0D
+
+
+/**
+ * \brief Extra Records
+ *
+ * The .lzma format provides a way to store custom information along
+ * the actual compressed content. Information about these Records
+ * are passed to and from liblzma via this linked list.
+ */
+typedef struct lzma_extra_s lzma_extra;
+struct lzma_extra_s {
+ /**
+ * \brief Pointer to the next Extra Record
+ *
+ * This is NULL on the last Extra Record.
+ */
+ lzma_extra *next;
+
+ /**
+ * \brief Record ID
+ *
+ * Extra Record IDs are divided in three categories:
+ * - Zero is a special case used for padding. It doesn't have
+ * Size of Data fields.
+ * - Odd IDs (1, 3, 5, ...) are Safe-to-Copy IDs.
+ * These can be preserved as is if the Stream is
+ * modified in a way that doesn't alter the actual
+ * uncompressed content.
+ * - Even IDs (2, 4, 6, ...) are Unsafe-to-Copy IDs.
+ * If the .lzma Stream is modified in any way,
+ * the Extra Records having a sensitive ID should
+ * be removed or updated accordingly.
+ *
+ * Refer to the .lzma file format specification for
+ * the up to date list of Extra Record IDs.
+ */
+ lzma_vli id;
+
+ /**
+ * \brief Size of the Record data
+ *
+ * In case of strings, this should not include the
+ * trailing '\0'.
+ */
+ size_t size;
+
+ /**
+ * \brief Record data
+ *
+ * Record data is often a string in UTF-8 encoding,
+ * but it can be arbitrary binary data. In case of
+ * strings, the trailing '\0' is usually not stored
+ * in the .lzma file.
+ *
+ * To ease working with Extra Records containing strings,
+ * liblzma always adds '\0' to the end of data even when
+ * it wasn't present in the .lzma file. This '\0' is not
+ * counted in the size of the data.
+ */
+ uint8_t *data;
+};
+
+
+extern void lzma_extra_free(lzma_extra *extra, lzma_allocator *allocator);
diff --git a/src/liblzma/api/lzma/filter.h b/src/liblzma/api/lzma/filter.h
new file mode 100644
index 0000000..a8bdd4b
--- /dev/null
+++ b/src/liblzma/api/lzma/filter.h
@@ -0,0 +1,166 @@
+/**
+ * \file lzma/filter.h
+ * \brief Common filter related types
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Filter options
+ *
+ * This structure is used to pass Filter ID and a pointer filter's options
+ * to liblzma.
+ */
+typedef struct {
+ /**
+ * \brief Filter ID
+ *
+ * Use constants whose name begin with `LZMA_FILTER_' to specify
+ * different filters. In an array of lzma_option_filter structures,
+ * use LZMA_VLI_VALUE_UNKNOWN to indicate end of filters.
+ */
+ lzma_vli id;
+
+ /**
+ * \brief Pointer to filter-specific options structure
+ *
+ * If the filter doesn't need options, set this to NULL. If id is
+ * set to LZMA_VLI_VALUE_UNKNOWN, options is ignored, and thus
+ * doesn't need be initialized.
+ *
+ * Some filters support changing the options in the middle of
+ * the encoding process. These filters store the pointer of the
+ * options structure and communicate with the application via
+ * modifications of the options structure.
+ */
+ void *options;
+
+} lzma_options_filter;
+
+
+/**
+ * \brief Filters available for encoding
+ *
+ * Pointer to an array containing the list of available Filter IDs that
+ * can be used for encoding. The last element is LZMA_VLI_VALUE_UNKNOWN.
+ *
+ * If lzma_available_filter_encoders[0] == LZMA_VLI_VALUE_UNKNOWN, the
+ * encoder components haven't been built at all. This means that the
+ * encoding-specific functions are probably missing from the library
+ * API/ABI completely.
+ */
+extern const lzma_vli *const lzma_available_filter_encoders;
+
+
+/**
+ * \brief Filters available for decoding
+ *
+ * Pointer to an array containing the list of available Filter IDs that
+ * can be used for decoding. The last element is LZMA_VLI_VALUE_UNKNOWN.
+ *
+ * If lzma_available_filter_decoders[0] == LZMA_VLI_VALUE_UNKNOWN, the
+ * decoder components haven't been built at all. This means that the
+ * decoding-specific functions are probably missing from the library
+ * API/ABI completely.
+ */
+extern const lzma_vli *const lzma_available_filter_decoders;
+
+
+/**
+ * \brief Calculate rough memory requirements for given filter chain
+ *
+ * \param filters Array of filters terminated with
+ * .id == LZMA_VLI_VALUE_UNKNOWN.
+ * \param is_encoder Set to true when calculating memory requirements
+ * of an encoder; false for decoder.
+ *
+ * \return Number of mebibytes (MiB i.e. 2^20) required for the given
+ * encoder or decoder filter chain.
+ *
+ * \note If calculating memory requirements of encoder, lzma_init() or
+ * lzma_init_encoder() must have been called earlier. Similarly,
+ * if calculating memory requirements of decoder, lzma_init() or
+ * lzma_init_decoder() must have been called earlier.
+ */
+extern uint32_t lzma_memory_usage(
+ const lzma_options_filter *filters, lzma_bool is_encoder);
+
+
+/**
+ * \brief Calculates encoded size of a Filter Flags field
+ *
+ * Knowing the size of Filter Flags is useful to know when allocating
+ * memory to hold the encoded Filter Flags.
+ *
+ * \param size Pointer to integer to hold the calculated size
+ * \param options Filter ID and associated options whose encoded
+ * size is to be calculted
+ *
+ * \return - LZMA_OK: *size set successfully. Note that this doesn't
+ * guarantee that options->options is valid, thus
+ * lzma_filter_flags_encode() may still fail.
+ * - LZMA_HEADER_ERROR: Unknown Filter ID or unsupported options.
+ * - LZMA_PROG_ERROR: Invalid options
+ *
+ * \note If you need to calculate size of List of Filter Flags,
+ * you need to loop over every lzma_options_filter entry.
+ */
+extern lzma_ret lzma_filter_flags_size(
+ uint32_t *size, const lzma_options_filter *options);
+
+
+/**
+ * \brief Encodes Filter Flags into given buffer
+ *
+ * In contrast to some functions, this doesn't allocate the needed buffer.
+ * This is due to how this function is used internally by liblzma.
+ *
+ * \param out Beginning of the output buffer
+ * \param out_pos out[*out_pos] is the next write position. This
+ * is updated by the encoder.
+ * \param out_size out[out_size] is the first byte to not write.
+ * \param options Filter options to be encoded
+ *
+ * \return - LZMA_OK: Encoding was successful.
+ * - LZMA_HEADER_ERROR: Invalid or unsupported options.
+ * - LZMA_PROG_ERROR: Invalid options or not enough output
+ * buffer space (you should have checked it with
+ * lzma_filter_flags_size()).
+ */
+extern lzma_ret lzma_filter_flags_encode(uint8_t *out, size_t *out_pos,
+ size_t out_size, const lzma_options_filter *options);
+
+
+/**
+ * \brief Initializes Filter Flags decoder
+ *
+ * The decoded result is stored into *options. options->options is
+ * initialized but the old value is NOT free()d.
+ *
+ * Because the results of this decoder are placed into *options,
+ * strm->next_in, strm->avail_in, and strm->total_in are not used
+ * when calling lzma_code(). The only valid action for lzma_code()
+ * is LZMA_RUN
+ *
+ * \return - LZMA_OK
+ * - LZMA_MEM_ERROR
+ * - LZMA_PROG_ERROR
+ */
+extern lzma_ret lzma_filter_flags_decoder(
+ lzma_stream *strm, lzma_options_filter *options);
diff --git a/src/liblzma/api/lzma/index.h b/src/liblzma/api/lzma/index.h
new file mode 100644
index 0000000..7e59c4b
--- /dev/null
+++ b/src/liblzma/api/lzma/index.h
@@ -0,0 +1,84 @@
+/**
+ * \file lzma/index.h
+ * \brief Handling of Index lists
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief
+ *
+ * FIXME desc
+ */
+typedef struct lzma_index_s lzma_index;
+struct lzma_index_s {
+ /**
+ * \brief Total Size of the Block
+ *
+ * This includes Block Header, Compressed Data, and Block Footer.
+ */
+ lzma_vli total_size;
+
+ /**
+ * \brief Uncompressed Size of the Block
+ */
+ lzma_vli uncompressed_size;
+
+ /**
+ * \brief Pointer to the next Index Record
+ *
+ * This is NULL on the last Index Record.
+ */
+ lzma_index *next;
+};
+
+
+/**
+ * \brief Duplicates an Index list
+ *
+ * \return A copy of the Index list, or NULL if memory allocation
+ * failed or the original Index was empty.
+ */
+extern lzma_index *lzma_index_dup(
+ const lzma_index *index, lzma_allocator *allocator);
+
+
+/**
+ * \brief Frees an Index list
+ *
+ * All Index Recors in the list are freed. This function is convenient when
+ * getting rid of lzma_metadata structures containing an Index.
+ */
+extern void lzma_index_free(lzma_index *index, lzma_allocator *allocator);
+
+
+/**
+ * \brief Calculates information about the Index
+ *
+ * \return LZMA_OK on success, LZMA_PROG_ERROR on error. FIXME
+ */
+extern lzma_ret lzma_index_count(const lzma_index *index, size_t *count,
+ lzma_vli *lzma_restrict total_size,
+ lzma_vli *lzma_restrict uncompressed_size);
+
+
+/**
+ * \brief Compares if two Index lists are identical
+ */
+extern lzma_bool lzma_index_is_equal(const lzma_index *a, const lzma_index *b);
diff --git a/src/liblzma/api/lzma/info.h b/src/liblzma/api/lzma/info.h
new file mode 100644
index 0000000..3a91850
--- /dev/null
+++ b/src/liblzma/api/lzma/info.h
@@ -0,0 +1,315 @@
+/**
+ * \file lzma/info.h
+ * \brief Handling of Stream size information
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**********
+ * Basics *
+ **********/
+
+/**
+ * \brief Opaque data type to hold the size information
+ */
+typedef struct lzma_info_s lzma_info;
+
+
+typedef struct {
+ /**
+ * \brief Total Size of this Block
+ *
+ * This can be LZMA_VLI_VALUE_UNKNOWN.
+ */
+ lzma_vli total_size;
+
+ /**
+ * \brief Uncompressed Size of this Block
+ *
+ * This can be LZMA_VLI_VALUE_UNKNOWN.
+ */
+ lzma_vli uncompressed_size;
+
+ /**
+ * \brief Offset of the first byte of the Block
+ *
+ * In encoder, this is useful to find out the alignment of the Block.
+ *
+ * In decoder, this is useful when doing random-access reading
+ * with help from lzma_info_data_locate().
+ */
+ lzma_vli stream_offset;
+
+ /**
+ * \brief Uncompressed offset of the Block
+ *
+ * Offset of the first uncompressed byte of the Block relative to
+ * all uncompressed data in the Block.
+ * FIXME desc
+ */
+ lzma_vli uncompressed_offset;
+
+ /**
+ * \brief Pointers to internal data structures
+ *
+ * Applications must not touch these.
+ */
+ void *internal[4];
+
+} lzma_info_iter;
+
+
+typedef enum {
+ LZMA_INFO_STREAM_START,
+ LZMA_INFO_HEADER_METADATA,
+ LZMA_INFO_TOTAL,
+ LZMA_INFO_UNCOMPRESSED,
+ LZMA_INFO_FOOTER_METADATA
+} lzma_info_size;
+
+
+/**
+ * \brief Allocates and initializes a new lzma_info structure
+ *
+ * If info is NULL, a new lzma_info structure is allocated, initialized, and
+ * a pointer to it returned. If allocation fails, NULL is returned.
+ *
+ * If info is non-NULL, it is reinitialized and the same pointer returned.
+ * (In this case, return value cannot be NULL or a different pointer than
+ * the info given as argument.)
+ */
+extern lzma_info *lzma_info_init(lzma_info *info, lzma_allocator *allocator);
+
+
+/**
+ * \brief Resets lzma_info
+ *
+ * This is like calling lzma_info_end() and lzma_info_create(), but
+ * re-uses the existing base structure.
+ */
+extern void lzma_info_reset(
+ lzma_info *info, lzma_allocator *allocator);
+
+
+/**
+ * \brief Frees memory allocated for a lzma_info structure
+ */
+extern void lzma_info_free(lzma_info *info, lzma_allocator *allocator);
+
+
+/************************
+ * Setting known values *
+ ************************/
+
+/**
+ * \brief Set a known size value
+ *
+ * \param info Pointer returned by lzma_info_create()
+ * \param type Any value from lzma_info_size
+ * \param size Value to set or verify
+ *
+ * \return LZMA_OK on success, LZMA_DATA_ERROR if the size doesn't
+ * match the existing information, or LZMA_PROG_ERROR
+ * if type is invalid or size is not a valid VLI.
+ */
+extern lzma_ret lzma_info_size_set(
+ lzma_info *info, lzma_info_size type, lzma_vli size);
+
+
+/**
+ * \brief Sets the Index
+ *
+ * The given lzma_index list is "absorbed" by this function. The application
+ * must not access it after this function call, even if this function returns
+ * an error.
+ *
+ * \note The given lzma_index will at some point get freed by the
+ * lzma_info_* functions. If you use a custom lzma_allocator,
+ * make sure that it can free the lzma_index.
+ */
+extern lzma_ret lzma_info_index_set(
+ lzma_info *info, lzma_allocator *allocator,
+ lzma_index *index, lzma_bool eat_index);
+
+
+/**
+ * \brief Sets information from a known Metadata Block
+ *
+ * This is a shortcut for calling lzma_info_size_set() with different type
+ * arguments, lzma_info_index_set() with metadata->index.
+ */
+extern lzma_ret lzma_info_metadata_set(lzma_info *info,
+ lzma_allocator *allocator, lzma_metadata *metadata,
+ lzma_bool is_header_metadata, lzma_bool eat_index);
+
+
+/***************
+ * Incremental *
+ ***************/
+
+/**
+ * \brief Prepares an iterator to be used with given lzma_info structure
+ *
+ *
+ */
+extern void lzma_info_iter_begin(lzma_info *info, lzma_info_iter *iter);
+
+
+/**
+ * \brief Moves to the next Index Record
+ *
+ *
+ */
+extern lzma_ret lzma_info_iter_next(
+ lzma_info_iter *iter, lzma_allocator *allocator);
+
+
+/**
+ * \brief Sets or verifies the sizes in the Index Record
+ *
+ * \param iter Pointer to iterator to be set or verified
+ * \param total_size
+ * Total Size in bytes or LZMA_VLI_VALUE_UNKNOWN
+ * \param uncompressed_size
+ * Uncompressed Size or LZMA_VLI_VALUE_UNKNOWN
+ *
+ * \return - LZMA_OK: All OK.
+ * - LZMA_DATA_ERROR: Given sizes don't match with the already
+ * known sizes.
+ * - LZMA_PROG_ERROR: Internal error, possibly integer
+ * overflow (e.g. the sum of all the known sizes is too big)
+ */
+extern lzma_ret lzma_info_iter_set(lzma_info_iter *iter,
+ lzma_vli total_size, lzma_vli uncompressed_size);
+
+
+/**
+ * \brief Locates a Data Block
+ *
+ * \param iter Properly initialized iterator
+ * \param allocator Pointer to lzma_allocator or NULL
+ * \param uncompressed_offset
+ * Target offset to locate. The final offset
+ * will be equal or smaller than this.
+ * \param allow_alloc True if this function is allowed to call
+ * lzma_info_iter_next() to allocate a new Record
+ * if the requested offset reached end of Index
+ * Record list. Note that if Index has been marked
+ * final, lzma_info_iter_next() is never called.
+ *
+ * \return - LZMA_OK: All OK, *iter updated accordingly.
+ * - LZMA_DATA_ERROR: Trying to search past the end of the Index
+ * Record list, and allocating a new Record was not allowed
+ * either because allow_alloc was false or Index was final.
+ * - LZMA_PROG_ERROR: Internal error (probably integer
+ * overflow causing some lzma_vli getting too big).
+ */
+extern lzma_ret lzma_info_iter_locate(lzma_info_iter *iter,
+ lzma_allocator *allocator, lzma_vli uncompressed_offset,
+ lzma_bool allow_alloc);
+
+
+/**
+ * \brief Finishes incrementally constructed Index
+ *
+ * This sets the known Total Size and Uncompressed of the Data Blocks
+ * based on the information collected from the Index Records, and marks
+ * the Index as final.
+ */
+extern lzma_ret lzma_info_index_finish(lzma_info *info);
+
+
+/***************************
+ * Reading the information *
+ ***************************/
+
+/**
+ * \brief Gets a known size
+ *
+ *
+ */
+extern lzma_vli lzma_info_size_get(
+ const lzma_info *info, lzma_info_size type);
+
+extern lzma_vli lzma_info_metadata_locate(
+ const lzma_info *info, lzma_bool is_header_metadata);
+
+/**
+ * \brief Gets a pointer to the beginning of the Index list
+ *
+ * If detach is true, the Index will be detached from the lzma_info
+ * structure, and thus not be modified or freed by lzma_info_end().
+ *
+ * If detach is false, the application must not modify the Index in any way.
+ * Also, the Index list is guaranteed to be valid only till the next call
+ * to any lzma_info_* function.
+ */
+extern lzma_index *lzma_info_index_get(lzma_info *info, lzma_bool detach);
+
+
+extern size_t lzma_info_index_count_get(const lzma_info *info);
+
+
+extern uint32_t lzma_info_metadata_alignment_get(
+ const lzma_info *info, lzma_bool is_header_metadata);
+
+
+
+/**
+ * \brief Locate a Block containing the given uncompressed offset
+ *
+ * This function is useful when you need to do random-access reading in
+ * a Multi-Block Stream.
+ *
+ * \param info Pointer to lzma_info that has at least one
+ * Index Record. The Index doesn't need to be finished.
+ * \param uncompressed_target
+ * Uncompressed target offset which the caller would
+ * like to locate from the Stream.
+ * \param stream_offset
+ * Starting offset (relative to the beginning the Stream)
+ * of the Block containing the requested location.
+ * \param uncompressed_offset
+ * The actual uncompressed offset of the beginning of
+ * the Block. uncompressed_offset <= uncompressed_target
+ * is always true; the application needs to uncompress
+ * uncompressed_target - uncompressed_offset bytes to
+ * reach the requested target offset.
+ * \param total_size
+ * Total Size of the Block. If the Index is incomplete,
+ * this may be LZMA_VLI_VALUE_UNKNOWN indicating unknown
+ * size.
+ * \param uncompressed_size
+ * Uncompressed Size of the Block. If the Index is
+ * incomplete, this may be LZMA_VLI_VALUE_UNKNOWN
+ * indicating unknown size. The application must pass
+ * this value to the Block decoder to verify FIXME
+ *
+ * \return
+ *
+ * \note This function is currently implemented as a linear search.
+ * If there are many Index Records, this can be really slow.
+ * This can be improved in newer liblzma versions if needed.
+ */
+extern lzma_bool lzma_info_data_locate(const lzma_info *info,
+ lzma_vli uncompressed_target,
+ lzma_vli *lzma_restrict stream_offset,
+ lzma_vli *lzma_restrict uncompressed_offset,
+ lzma_vli *lzma_restrict total_size,
+ lzma_vli *lzma_restrict uncompressed_size);
diff --git a/src/liblzma/api/lzma/init.h b/src/liblzma/api/lzma/init.h
new file mode 100644
index 0000000..f7b7924
--- /dev/null
+++ b/src/liblzma/api/lzma/init.h
@@ -0,0 +1,85 @@
+/**
+ * \file lzma/init.h
+ * \brief Initializations
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Initialize all internal static variables
+ *
+ * Depending on the build options, liblzma may have some internal static
+ * variables, that must be initialized before using any other part of
+ * the library (*). It is recommended to do these initializations in the very
+ * beginning of the application by calling appropriate initialization function.
+ *
+ * (*) There are some exceptions to this rule. FIXME
+ *
+ * The initialization functions are not necessarily thread-safe, thus the
+ * required initializations must be done before creating any threads. (The
+ * rest of the functions of liblzma are thread-safe.) Calling the
+ * initialization functions multiple times does no harm, although it
+ * still shouldn't be done when there are multiple threads running.
+ *
+ * lzma_init() initializes all internal static variables by calling
+ * lzma_lzma_init_encoder() and lzma_init_decoder().
+ *
+ * If you need only encoder, decoder, or neither-encoder-nor-decoder
+ * functions, you may use other initialization functions, which initialize
+ * only a subset of liblzma's internal static variables. Using those
+ * functions have the following advantages:
+ * - When linking statically against liblzma, less useless functions will
+ * get linked into the binary. E.g. if you need only the decoder functions,
+ * using lzma_init_decoder() avoids linking bunch of encoder related code.
+ * - There is less things to initialize, making the initialization
+ * process slightly faster.
+ */
+extern void lzma_init(void);
+
+
+/**
+ * \brief Initialize internal static variables needed by encoders
+ *
+ * If you need only the encoder functions, you may use this function to
+ * initialize only the things required by encoders.
+ *
+ * This function also calls lzma_init_check().
+ */
+extern void lzma_init_encoder(void);
+
+
+/**
+ * \brief Initialize internal static variables needed by decoders
+ *
+ * If you need only the decoder functions, you may use this function to
+ * initialize only the things required by decoders.
+ *
+ * This function also calls lzma_init_check().
+ */
+extern void lzma_init_decoder(void);
+
+
+/**
+ * \brief Initialize internal static variables needed by integrity checks
+ *
+ * Currently this initializes CRC32 and CRC64 lookup tables if precalculated
+ * tables haven't been built into the library. This function can be useful
+ * if the only thing you need from liblzma is the integrity check functions.
+ */
+extern void lzma_init_check(void);
diff --git a/src/liblzma/api/lzma/lzma.h b/src/liblzma/api/lzma/lzma.h
new file mode 100644
index 0000000..0fe7485
--- /dev/null
+++ b/src/liblzma/api/lzma/lzma.h
@@ -0,0 +1,312 @@
+/**
+ * \file lzma/lzma.h
+ * \brief LZMA filter
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Filter ID
+ *
+ * Filter ID of the LZMA filter. This is used as lzma_options_filter.id.
+ */
+#define LZMA_FILTER_LZMA LZMA_VLI_C(0x40)
+
+
+/**
+ * \brief LZMA compression modes
+ *
+ * Currently there are only two modes. Earlier LZMA SDKs had also third
+ * mode between fast and best.
+ */
+typedef enum {
+ LZMA_MODE_INVALID = -1,
+ /**<
+ * \brief Invalid mode
+ *
+ * Used as array terminator in lzma_available_modes.
+ */
+
+
+ LZMA_MODE_FAST = 0,
+ /**<
+ * \brief Fast compression
+ *
+ * Fast mode is usually at its best when combined with
+ * a hash chain match finder.
+ */
+
+ LZMA_MODE_BEST = 2
+ /**<
+ * \brief Best compression ratio
+ *
+ * This is usually notably slower than fast mode. Use this
+ * together with binary tree match finders to expose the
+ * full potential of the LZMA encoder.
+ */
+} lzma_mode;
+
+
+/**
+ * \brief Match finders
+ *
+ * Match finder has major effect on both speed and compression ratio.
+ * Usually hash chains are faster than binary trees.
+ */
+typedef enum {
+ LZMA_MF_INVALID = -1,
+ /**<
+ * \brief Invalid match finder ID
+ *
+ * Used as array terminator in lzma_available_match_finders.
+ */
+
+ LZMA_MF_HC3 = 0x03,
+ /**<
+ * \brief Hash Chain with 3 bytes hashing
+ *
+ * \todo Memory requirements
+ *
+ * \note It's possible that this match finder gets
+ * removed in future. The definition will stay
+ * in this header, but liblzma may return
+ * LZMA_HEADER_ERROR if it is specified (just
+ * like it would if the match finder had been
+ * disabled at compile time).
+ */
+
+ LZMA_MF_HC4 = 0x04,
+ /**<
+ * \brief Hash Chain with 4 bytes hashing
+ *
+ * Memory requirements: 7.5 * dictionary_size + 4 MiB
+ *
+ * \note It's possible that this match finder gets
+ * removed in future. The definition will stay
+ * in this header, but liblzma may return
+ * LZMA_HEADER_ERROR if it is specified (just
+ * like it would if the match finder had been
+ * disabled at compile time).
+ */
+
+ LZMA_MF_BT2 = 0x12,
+ /**<
+ * \brief Binary Tree with 2 bytes hashing
+ *
+ * Memory requirements: 9.5 * dictionary_size + 4 MiB
+ */
+
+ LZMA_MF_BT3 = 0x13,
+ /**<
+ * \brief Binary Tree with 3 bytes hashing
+ *
+ * Memory requirements: 11.5 * dictionary_size + 4 MiB
+ */
+
+ LZMA_MF_BT4 = 0x14
+ /**<
+ * \brief Binary Tree with 4 bytes hashing
+ *
+ * Memory requirements: 11.5 * dictionary_size + 4 MiB
+ */
+} lzma_match_finder;
+
+
+/**
+ * \brief Options specific to the LZMA method handler
+ */
+typedef struct {
+ /**********************************
+ * LZMA encoding/decoding options *
+ **********************************/
+
+ /* These options are required in encoder and also with raw decoding. */
+
+ /**
+ * \brief Dictionary size in bytes
+ *
+ * Dictionary size indicates how many bytes of the recently processed
+ * uncompressed data is kept in memory. One method to reduce size of
+ * the uncompressed data is to store distance-length pairs, which
+ * indicate what data to repeat from the dictionary buffer. Thus,
+ * the bigger the dictionary, the better compression ratio usually is.
+ *
+ * Raw decoding: Too big dictionary does no other harm than
+ * wasting memory. This value is ignored by lzma_raw_decode_buffer(),
+ * because it uses the target buffer as the dictionary.
+ */
+ uint32_t dictionary_size;
+# define LZMA_DICTIONARY_SIZE_MIN 1
+# define LZMA_DICTIONARY_SIZE_MAX (UINT32_C(1) << 30)
+# define LZMA_DICTIONARY_SIZE_DEFAULT (UINT32_C(1) << 23)
+
+ /**
+ * \brief Number of literal context bits
+ *
+ * How many of the highest bits of the previous uncompressed
+ * eight-bit byte (also known as `literal') are taken into
+ * account when predicting the bits of the next literal.
+ *
+ * \todo Example
+ */
+ uint32_t literal_context_bits;
+# define LZMA_LITERAL_CONTEXT_BITS_MIN 0
+# define LZMA_LITERAL_CONTEXT_BITS_MAX 8
+# define LZMA_LITERAL_CONTEXT_BITS_DEFAULT 3
+
+ /**
+ * \brief Number of literal position bits
+ *
+ * How many of the lowest bits of the current position (number
+ * of bytes from the beginning of the uncompressed data) in the
+ * uncompressed data is taken into account when predicting the
+ * bits of the next literal (a single eight-bit byte).
+ *
+ * \todo Example
+ */
+ uint32_t literal_pos_bits;
+# define LZMA_LITERAL_POS_BITS_MIN 0
+# define LZMA_LITERAL_POS_BITS_MAX 4
+# define LZMA_LITERAL_POS_BITS_DEFAULT 0
+
+ /**
+ * \brief Number of position bits
+ *
+ * How many of the lowest bits of the current position in the
+ * uncompressed data is taken into account when estimating
+ * probabilities of matches. A match is a sequence of bytes for
+ * which a matching sequence is found from the dictionary and
+ * thus can be stored as distance-length pair.
+ *
+ * Example: If most of the matches occur at byte positions
+ * of 8 * n + 3, that is, 3, 11, 19, ... set pos_bits to 3,
+ * because 2**3 == 8.
+ */
+ uint32_t pos_bits;
+# define LZMA_POS_BITS_MIN 0
+# define LZMA_POS_BITS_MAX 4
+# define LZMA_POS_BITS_DEFAULT 2
+
+ /**
+ * \brief Pointer to an initial dictionary
+ *
+ * It is possible to initialize the LZ77 history window using
+ * a preset dictionary. Here is a good quote from zlib's
+ * documentation; this applies to LZMA as is:
+ *
+ * "The dictionary should consist of strings (byte sequences) that
+ * are likely to be encountered later in the data to be compressed,
+ * with the most commonly used strings preferably put towards the
+ * end of the dictionary. Using a dictionary is most useful when
+ * the data to be compressed is short and can be predicted with
+ * good accuracy; the data can then be compressed better than
+ * with the default empty dictionary."
+ * (From deflateSetDictionary() in zlib.h of zlib version 1.2.3)
+ *
+ * This feature should be used only in special situations.
+ * It works correctly only with raw encoding and decoding.
+ * Currently none of the container formats supported by
+ * liblzma allow preset dictionary when decoding, thus if
+ * you create a .lzma file with preset dictionary, it cannot
+ * be decoded with the regular .lzma decoder functions.
+ *
+ * \todo This feature is not implemented yet.
+ */
+ const uint8_t *preset_dictionary;
+
+ /**
+ * \brief Size of the preset dictionary
+ *
+ * Specifies the size of the preset dictionary. If the size is
+ * bigger than dictionary_size, only the last dictionary_size
+ * bytes are processed.
+ *
+ * This variable is read only when preset_dictionary is not NULL.
+ */
+ uint32_t preset_dictionary_size;
+
+ /******************************************
+ * LZMA options needed only when encoding *
+ ******************************************/
+
+ /** LZMA compression mode */
+ lzma_mode mode;
+
+ /**
+ * \brief Number of fast bytes
+ *
+ * Number of fast bytes determines how many bytes the encoder
+ * compares from the match candidates when looking for the best
+ * match. Bigger fast bytes value usually increase both compression
+ * ratio and time.
+ */
+ uint32_t fast_bytes;
+# define LZMA_FAST_BYTES_MIN 5
+# define LZMA_FAST_BYTES_MAX 273
+# define LZMA_FAST_BYTES_DEFAULT 128
+
+ /** Match finder ID */
+ lzma_match_finder match_finder;
+
+ /**
+ * \brief Match finder cycles
+ *
+ * Higher values give slightly better compression ratio but
+ * decrease speed. Use special value 0 to let liblzma use
+ * match-finder-dependent default value.
+ *
+ * \todo Write much better description.
+ */
+ uint32_t match_finder_cycles;
+
+} lzma_options_lzma;
+
+
+/**
+ * \brief Available LZMA encoding modes
+ *
+ * Pointer to an array containing the list of available encoding modes.
+ *
+ * This variable is available only if LZMA encoder has been enabled.
+ */
+extern const lzma_mode *const lzma_available_modes;
+
+
+/**
+ * \brief Available match finders
+ *
+ * Pointer to an array containing the list of available match finders.
+ * The last element is LZMA_MF_INVALID.
+ *
+ * This variable is available only if LZMA encoder has been enabled.
+ */
+extern const lzma_match_finder *const lzma_available_match_finders;
+
+
+/**
+ * \brief Table of presets for the LZMA filter
+ *
+ * lzma_presets[0] is the fastest and lzma_preset_lzma[8] is the slowest.
+ * These presets match the switches -1 .. -9 of the lzma command line tool
+ *
+ * The preset values are subject to changes between liblzma versions.
+ *
+ * This variable is available only if LZMA encoder has been enabled.
+ */
+extern const lzma_options_lzma lzma_preset_lzma[9];
diff --git a/src/liblzma/api/lzma/memlimit.h b/src/liblzma/api/lzma/memlimit.h
new file mode 100644
index 0000000..26ec50f
--- /dev/null
+++ b/src/liblzma/api/lzma/memlimit.h
@@ -0,0 +1,157 @@
+/**
+ * \file lzma/memlimit.h
+ * \brief Memory usage limitter
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Opaque data type used with the memory usage limitting functions
+ */
+typedef struct lzma_memlimit_s lzma_memlimit;
+
+
+/**
+ * \brief Allocates and initializes a new lzma_memlimit structure
+ *
+ * It is easy to make liblzma to use huge amounts of memory. This can
+ * be a problem especially with the decoder, since it a file requiring
+ * huge amounts of memory to uncompress could allow even a denial of
+ * service attack if the memory usage wasn't limited.
+ *
+ * liblzma provides a set of functions to control memory usage. Pointers
+ * to these functions can be used in lzma_allocator structure, which makes
+ * it easy to limit memory usage with liblzma.
+ *
+ * The memory limitter functions are not tied to limitting memory usage
+ * with liblzma itself. You can use them with anything you like.
+ *
+ * In multi-threaded applications, only one thread at once may use the same
+ * lzma_memlimit structure. If there is a need, this limitation may
+ * be removed in future versions without breaking the libary API/ABI.
+ *
+ * \param limit Initial memory usage limit in bytes
+ *
+ * \return Pointer to allocated and initialized lzma_memlimit
+ * structure. On error, NULL is returned. The reason behind
+ * an error is either that malloc() failed or that the given
+ * limit was so small that it didn't allow allocating even
+ * the lzma_memlimit structure itself.
+ *
+ * \note Excluding lzma_memlimit_usage(), the functions whose name begin
+ * lzma_memlimit_ can be used even if lzma_init() hasn't been
+ * called.
+ */
+extern lzma_memlimit *lzma_memlimit_create(size_t limit);
+
+
+/**
+ * \brief Sets a new memory usage limit
+ *
+ * \param mem Pointer to a lzma_memlimit structure returned
+ * earlier by lzma_memry_limit_create().
+ * \param limit New memory usage limit
+ *
+ * The new usage limit may be smaller than the amount of memory currently
+ * allocated via *mem: New allocations will fail until enough memory has
+ * been freed or a new limit is set, but the existing allocatations will
+ * stay untouched.
+ */
+extern void lzma_memlimit_set(lzma_memlimit *mem, size_t limit);
+
+
+/**
+ * \brief Gets the current memory usage limit
+ */
+extern size_t lzma_memlimit_get(const lzma_memlimit *mem);
+
+
+/**
+ * \brief Gets the amount of currently allocated memory
+ *
+ * \note This value includes the sizes of some helper structures,
+ * thus it will always be larger than the total number of
+ * bytes allocated via lzma_memlimit_alloc().
+ */
+extern size_t lzma_memlimit_used(const lzma_memlimit *mem);
+
+
+/**
+ * \brief Allocates memory with malloc() if memory limit allows
+ *
+ * \param mem Pointer to a lzma_memlimit structure returned
+ * earlier by lzma_memry_limit_create().
+ * \param nmemb Number of elements to allocate. While liblzma always
+ * sets this to one, this function still takes the
+ * value of nmemb into account to keep the function
+ * usable with zlib and libbzip2.
+ * \param size Size of an element.
+ *
+ * \return Pointer to memory allocated with malloc(nmemb * size),
+ * except if nmemb * size == 0 which returns malloc(1).
+ * On error, NULL is returned.
+ *
+ * \note This function assumes that nmemb * size is at maximum of
+ * SIZE_MAX. If it isn't, an overflow will occur resulting
+ * invalid amount of memory being allocated.
+ */
+extern void *lzma_memlimit_alloc(
+ lzma_memlimit *mem, size_t nmemb, size_t size);
+
+
+/**
+ * \brief Removes the pointer from memory limitting list
+ *
+ * \param mem Pointer to a lzma_memlimit structure returned
+ * earlier by lzma_memry_limit_create().
+ * \param ptr Pointer returned earlier by lzma_memlimit_alloc().
+ *
+ * This function removes ptr from the internal list and decreases the
+ * counter of used memory accordingly. The ptr itself isn't freed. This is
+ * useful when Extra Records allocated by liblzma using lzma_memlimit
+ * are needed by the application and must not be freed when the
+ * lzma_memlimit structure is destroyed.
+ *
+ * It is OK to call this function with ptr that hasn't been allocated with
+ * lzma_memlimit_alloc(). In that case, this has no effect other than wasting
+ * a few CPU cycles.
+ */
+extern void lzma_memlimit_detach(lzma_memlimit *mem, void *ptr);
+
+
+/**
+ * \brief Frees memory and updates the memory limit list
+ *
+ * This is like lzma_memlimit_detach() but also frees the given pointer.
+ */
+extern void lzma_memlimit_free(lzma_memlimit *mem, void *ptr);
+
+
+/**
+ * \brief Frees the memory allocated for and by the memory usage limitter
+ *
+ * \param mem Pointer to memory limitter
+ * \param free_allocated If this is non-zero, all the memory allocated
+ * by lzma_memlimit_alloc() using *mem is also
+ * freed if it hasn't already been freed with
+ * lzma_memlimit_free(). Usually this should be
+ * set to true.
+ */
+extern void lzma_memlimit_end(
+ lzma_memlimit *mem, lzma_bool free_allocated);
diff --git a/src/liblzma/api/lzma/metadata.h b/src/liblzma/api/lzma/metadata.h
new file mode 100644
index 0000000..69592a3
--- /dev/null
+++ b/src/liblzma/api/lzma/metadata.h
@@ -0,0 +1,100 @@
+/**
+ * \file lzma/metadata.h
+ * \brief Metadata handling
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Information stored into a Metadata Block
+ *
+ * This structure holds all the information that can be stored to
+ * a Metadata Block.
+ */
+typedef struct {
+ /**
+ * \brief Size of Header Metadata Block
+ */
+ lzma_vli header_metadata_size;
+
+ /**
+ * \brief Total Size of the Stream
+ */
+ lzma_vli total_size;
+
+ /**
+ * \brief Uncompressed Size of the Stream
+ */
+ lzma_vli uncompressed_size;
+
+ /**
+ * \brief Index of the Blocks stored in the Stream
+ */
+ lzma_index *index;
+
+ /**
+ * \brief Extra information
+ */
+ lzma_extra *extra;
+
+} lzma_metadata;
+
+
+/**
+ * \brief Calculate the encoded size of Metadata
+ *
+ * \return Uncompressed size of the Metadata in encoded form. This value
+ * may be passed to Block encoder as Uncompressed Size when using
+ * Metadata filter. On error, zero is returned.
+ */
+extern lzma_vli lzma_metadata_size(const lzma_metadata *metadata);
+
+
+/**
+ * \brief Initializes Metadata encoder
+ *
+ * \param coder Pointer to a pointer to hold Metadata encoder's
+ * internal state. Original value is ignored, thus
+ * you don't need to initialize the pointer.
+ * \param allocator Custom memory allocator; usually NULL.
+ * \param metadata Pointer to Metadata to encoded
+ *
+ * \return - LZMA_OK: Initialization succeeded.
+ * - LZMA_MEM_ERROR: Cannot allocate memory for *coder.
+ *
+ * The initialization function makes internal copy of the *metadata structure.
+ * However, the linked lists metadata->index and metadata->extra are NOT
+ * copied. Thus, the application may destroy *metadata after initialization
+ * if it likes, but not Index or Extra.
+ */
+extern lzma_ret lzma_metadata_encoder(lzma_stream *strm,
+ lzma_options_block *options, const lzma_metadata *metadata);
+
+
+/**
+ * \brief Initializes Metadata decoder
+ *
+ * \param want_extra If this is true, Extra Records will be stored
+ * to metadata->extra. If this is false, Extra
+ * Records will be parsed but not stored anywhere,
+ * metadata->extra will be set to NULL.
+ */
+extern lzma_ret lzma_metadata_decoder(
+ lzma_stream *strm, lzma_options_block *options,
+ lzma_metadata *metadata, lzma_bool want_extra);
diff --git a/src/liblzma/api/lzma/raw.h b/src/liblzma/api/lzma/raw.h
new file mode 100644
index 0000000..c1ee41d
--- /dev/null
+++ b/src/liblzma/api/lzma/raw.h
@@ -0,0 +1,72 @@
+/**
+ * \file lzma/raw.h
+ * \brief Raw encoder and decoder
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Initializes raw encoder
+ *
+ * This function may be useful when implementing custom file formats.
+ *
+ * \param strm Pointer to properly prepared lzma_stream
+ * \param options Array of lzma_options_filter structures.
+ * The end of the array must be marked with
+ * .id = LZMA_VLI_VALUE_UNKNOWN. The minimum
+ * number of filters is zero; the maximum is
+ * determined by available memory.
+ * \param uncompressed_size
+ * Size of the uncompressed data. If it is unknown,
+ * use LZMA_VLI_VALUE_UNKNOWN. You need to give the
+ * same value to the raw decoder to decode the data.
+ * \param allow_implicit
+ * If true, an implicit Copy or Subblock filter should be
+ * automatically added when needed. If this is false and
+ * an implicit filter would be needed, LZMA_PROG_ERROR is
+ * returned.
+ *
+ * The `action' with lzma_code() can be LZMA_RUN, LZMA_SYNC_FLUSH (if the
+ * filter chain support it), or LZMA_FINISH.
+ *
+ * \return - LZMA_OK
+ * - LZMA_MEM_ERROR
+ * - LZMA_HEADER_ERROR
+ * - LZMA_PROG_ERROR
+ */
+extern lzma_ret lzma_raw_encoder(
+ lzma_stream *strm, const lzma_options_filter *options,
+ lzma_vli uncompressed_size, lzma_bool allow_implicit);
+
+
+/**
+ * \brief Initializes raw decoder
+ *
+ * The initialization of raw decoder goes similarly to raw encoder.
+ *
+ * The `action' with lzma_code() can be LZMA_RUN or LZMA_SYNC_FLUSH.
+ *
+ * \return - LZMA_OK
+ * - LZMA_MEM_ERROR
+ * - LZMA_HEADER_ERROR
+ * - LZMA_PROG_ERROR
+ */
+extern lzma_ret lzma_raw_decoder(
+ lzma_stream *strm, const lzma_options_filter *options,
+ lzma_vli uncompressed_size, lzma_bool allow_implicit);
diff --git a/src/liblzma/api/lzma/simple.h b/src/liblzma/api/lzma/simple.h
new file mode 100644
index 0000000..fb78d01
--- /dev/null
+++ b/src/liblzma/api/lzma/simple.h
@@ -0,0 +1,85 @@
+/**
+ * \file lzma/simple.h
+ * \brief So called "simple" filters
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/* Filter IDs for lzma_options_filter.id */
+
+#define LZMA_FILTER_X86 LZMA_VLI_C(0x04)
+ /**<
+ * BCJ (Branch, Call, Jump) filter for x86 binaries
+ */
+
+#define LZMA_FILTER_POWERPC LZMA_VLI_C(0x05)
+ /**<
+ * Filter for Big endian PowerPC binaries
+ */
+
+#define LZMA_FILTER_IA64 LZMA_VLI_C(0x06)
+ /**<
+ * Filter for IA64 (Itanium) binaries.
+ */
+
+#define LZMA_FILTER_ARM LZMA_VLI_C(0x07)
+ /**<
+ * Filter for ARM binaries.
+ */
+
+#define LZMA_FILTER_ARMTHUMB LZMA_VLI_C(0x08)
+ /**<
+ * Filter for ARMThumb binaries.
+ */
+
+#define LZMA_FILTER_SPARC LZMA_VLI_C(0x09)
+ /**<
+ * Filter for SPARC binaries.
+ */
+
+
+/**
+ * \brief Options for so called "simple" filters
+ *
+ * The simple filters never change the size of the data. Specifying options
+ * for them is optional: if pointer to options is NULL, default values are
+ * used. You probably never need to specify these options, so just set the
+ * options pointer to NULL and be happy.
+ *
+ * If options with non-default values have been specified when encoding,
+ * the same options must also be specified when decoding.
+ */
+typedef struct {
+ /**
+ * \brief Start offset for branch conversions
+ *
+ * This setting is useful only when the same filter is used
+ * _separately_ for multiple sections of the same executable file,
+ * and the sections contain cross-section branch/call/jump
+ * instructions. In that case it is benefical to set the start
+ * offset of the non-first sections so that the relative addresses
+ * of the cross-section branch/call/jump instructions will use the
+ * same absolute addresses as in the first section.
+ *
+ * When the pointer to options is NULL, the default value is used.
+ * The default value is zero.
+ */
+ uint32_t start_offset;
+
+} lzma_options_simple;
diff --git a/src/liblzma/api/lzma/stream.h b/src/liblzma/api/lzma/stream.h
new file mode 100644
index 0000000..be86075
--- /dev/null
+++ b/src/liblzma/api/lzma/stream.h
@@ -0,0 +1,178 @@
+/**
+ * \file lzma/stream.h
+ * \brief .lzma Stream handling
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Options for .lzma Stream encoder
+ */
+typedef struct {
+ /**
+ * \brief Type of integrity Check
+ *
+ * The type of the integrity Check is stored into Stream Header
+ * and Stream Footer. The same Check is used for all Blocks in
+ * the Stream.
+ */
+ lzma_check_type check;
+
+ /**
+ * \brief Precense of CRC32 of the Block Header
+ *
+ * Set this to true if CRC32 of every Block Header should be
+ * calculated and stored in the Block Header. This is recommended.
+ *
+ * This setting is stored into Stream Header and Stream Footer.
+ */
+ lzma_bool has_crc32;
+
+ /**
+ * \brief Uncompressed Size in bytes
+ *
+ * This is somewhat advanced feature. Most users want to set this to
+ * LZMA_VLI_VALUE_UNKNOWN to indicate unknown Uncompressed Size.
+ *
+ * If the Uncompressed Size of the Stream being encoded is known,
+ * it can be stored to the beginning of the Stream. The details
+ * differ for Single-Block and Multi-Block Streams:
+ * - With Single-Block Streams, the Uncompressed Size is stored to
+ * the Block Header and End of Payload Marker is omitted.
+ * - With Multi-Block Streams, the Uncompressed Size is stored to
+ * the Header Metadata Block. The Uncompressed Size of the Blocks
+ * will be unknown, because liblzma cannot predict how the
+ * application is going to split the data in Blocks.
+ */
+ lzma_vli uncompressed_size;
+
+ /**
+ * \brief Alignment of the beginning of the Stream
+ *
+ * Certain filters handle data in bigger chunks than single bytes.
+ * This affects two things:
+ * - Performance: aligned memory access is usually faster.
+ * - Further compression ratio in custom file formats: if you
+ * encode multiple Blocks with some non-compression filter
+ * such as LZMA_FILTER_POWERPC, it is a good idea to keep
+ * the inter-Block alignment correct to maximize compression
+ * ratio when all these Blocks are finally compressed as a
+ * single step.
+ *
+ * Usually the Stream is stored into its own file, thus
+ * the alignment is usually zero.
+ */
+ uint32_t alignment;
+
+ /**
+ * \brief Array of filters used to encode Data Blocks
+ *
+ * There can be at maximum of seven filters. The end of the array is
+ * marked with .id = LZMA_VLI_VALUE_UNKNOWN. (That's why the array
+ * has eight members.) Minimum number of filters is zero; in that
+ * case, an implicit Copy filter is used.
+ */
+ lzma_options_filter filters[8];
+
+ /**
+ * \brief Array of filters used to encode Metadata Blocks
+ *
+ * This is like filters[] but for Metadata Blocks. If Metadata
+ * Blocks are compressed, they usually are compressed with
+ * settings that require only little memory to uncompress e.g.
+ * LZMA with 64 KiB dictionary.
+ *
+ * \todo Recommend a preset.
+ *
+ * When liblzma sees that the Metadata Block would be very small
+ * even in uncompressed form, it is not compressed no matter
+ * what filter have been set here. This is to avoid possibly
+ * increasing the size of the Metadata Block with bad compression,
+ * and to avoid useless overhead of filters in uncompression phase.
+ */
+ lzma_options_filter metadata_filters[8];
+
+ /**
+ * \brief Extra information in the Header Metadata Block
+ */
+ lzma_extra *header;
+
+ /**
+ * \brief Extra information in the Footer Metadata Block
+ *
+ * It is enough to set this pointer any time before calling
+ * lzma_code() with LZMA_FINISH as the second argument.
+ */
+ lzma_extra *footer;
+
+} lzma_options_stream;
+
+
+/**
+ * \brief Initializes Single-Block .lzma Stream encoder
+ *
+ * This is the function that most developers are looking for. :-) It
+ * compresses using the specified options without storing any extra
+ * information.
+ *
+ * \todo Describe that is_metadata is ignored, maybe something else.
+ */
+extern lzma_ret lzma_stream_encoder_single(
+ lzma_stream *strm, const lzma_options_stream *options);
+
+
+/**
+ * \brief Initializes Multi-Block .lzma Stream encoder
+ *
+ */
+extern lzma_ret lzma_stream_encoder_multi(
+ lzma_stream *strm, const lzma_options_stream *options);
+
+
+/**
+ * \brief Initializes decoder for .lzma Stream
+ *
+ * \param strm Pointer to propertily prepared lzma_stream
+ * \param header Pointer to hold a pointer to Extra Records read
+ * from the Header Metadata Block. Use NULL if
+ * you don't care about Extra Records.
+ * \param footer Same as header, but for Footer Metadata Block.
+ *
+ * \return - LZMA_OK: Initialization was successful.
+ * - LZMA_MEM_ERROR: Cannot allocate memory.
+ *
+ * If header and/or footer are not NULL, *header and/or *footer will be
+ * initially set to NULL.
+ *
+ * The application can detect that Header Metadata Block has been completely
+ * parsed when the decoder procudes some output the first time. If *header
+ * is still NULL, there was no Extra field in the Header Metadata Block (or
+ * the whole Header Metadata Block wasn't present at all).
+ *
+ * The application can detect that Footer Metadata Block has been parsed
+ * completely when lzma_code() returns LZMA_STREAM_END. If *footer is still
+ * NULL, there was no Extra field in the Footer Metadata Block.
+ *
+ * \note If you use lzma_memory_limitter, the Extra Records will be
+ * allocated with it, and thus remain in the lzma_memory_limitter
+ * even after they get exported to the application via *header
+ * and *footer pointers.
+ */
+extern lzma_ret lzma_stream_decoder(lzma_stream *strm,
+ lzma_extra **header, lzma_extra **footer);
diff --git a/src/liblzma/api/lzma/stream_flags.h b/src/liblzma/api/lzma/stream_flags.h
new file mode 100644
index 0000000..070c91c
--- /dev/null
+++ b/src/liblzma/api/lzma/stream_flags.h
@@ -0,0 +1,142 @@
+/**
+ * \file lzma/stream_flags.h
+ * \brief .lzma Stream Header and Stream tail encoder and decoder
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Size of Stream Header
+ *
+ * Magic Bytes (6) + Stream Flags (1) + CRC32 (4)
+ */
+#define LZMA_STREAM_HEADER_SIZE (6 + 1 + 4)
+
+
+/**
+ * \brief Size of Stream tail
+ *
+ * Because Stream Footer already has a defined meaning in the file format
+ * specification, we use Stream tail to denote these two fields:
+ * Stream Flags (1) + Magic Bytes (2)
+ */
+#define LZMA_STREAM_TAIL_SIZE (1 + 2)
+
+
+/**
+ * Options for encoding and decoding Stream Header and Stream tail
+ */
+typedef struct {
+ /**
+ * Type of the Check calculated from uncompressed data
+ */
+ lzma_check_type check;
+
+ /**
+ * True if Block Headers have the CRC32 field. Note that the CRC32
+ * field is always present in the Stream Header.
+ */
+ lzma_bool has_crc32;
+
+ /**
+ * True if the Stream is a Multi-Block Stream.
+ */
+ lzma_bool is_multi;
+
+} lzma_stream_flags;
+
+
+#define lzma_stream_flags_is_equal(a, b) \
+ ((a).check == (b).check \
+ && (a).has_crc32 == (b).has_crc32 \
+ && (a).is_multi == (b).is_multi)
+
+
+/**
+ * \brief Encodes Stream Header
+ *
+ * Encoding of the Stream Header is done with a single call instead of
+ * first initializing and then doing the actual work with lzma_code().
+ *
+ * \param out Beginning of the output buffer
+ * \param out_pos out[*out_pos] is the next write position. This
+ * is updated by the encoder.
+ * \param out_size out[out_size] is the first byte to not write.
+ * \param options Stream Header options to be encoded.
+ *
+ * \return - LZMA_OK: Encoding was successful.
+ * - LZMA_PROG_ERROR: Invalid options.
+ * - LZMA_BUF_ERROR: Not enough output buffer space.
+ */
+extern lzma_ret lzma_stream_header_encode(
+ uint8_t *out, const lzma_stream_flags *options);
+
+
+/**
+ * \brief Encodes Stream tail
+ *
+ * \param footer Pointer to a pointer that will hold the
+ * allocated buffer. Caller must free it once
+ * it isn't needed anymore.
+ * \param footer_size Pointer to a variable that will the final size
+ * of the footer buffer.
+ * \param allocator lzma_allocator for custom allocator functions.
+ * Set to NULL to use malloc().
+ * \param options Stream Header options to be encoded.
+ *
+ * \return - LZMA_OK: Success; *header and *header_size set.
+ * - LZMA_PROG_ERROR: *options is invalid.
+ * - LZMA_MEM_ERROR: Cannot allocate memory.
+ */
+extern lzma_ret lzma_stream_tail_encode(
+ uint8_t *out, const lzma_stream_flags *options);
+
+
+/**
+ * \brief Initializes Stream Header decoder
+ *
+ * \param strm Pointer to lzma_stream used to pass input data
+ * \param options Target structure for parsed results
+ *
+ * \return - LZMA_OK: Successfully initialized
+ * - LZMA_MEM_ERROR: Cannot allocate memory
+ *
+ * The actual decoding is done with lzma_code() and freed with lzma_end().
+ */
+extern lzma_ret lzma_stream_header_decoder(
+ lzma_stream *strm, lzma_stream_flags *options);
+
+
+/**
+ * \brief Initializes Stream tail decoder
+ *
+ * \param strm Pointer to lzma_stream used to pass input data
+ * \param options Target structure for parsed results.
+ * \param decode_uncompressed_size
+ * Set to true if the first field to decode is
+ * Uncompressed Size. Set to false if the first
+ * field to decode is Backward Size.
+ *
+ * \return - LZMA_OK: Successfully initialized
+ * - LZMA_MEM_ERROR: Cannot allocate memory
+ *
+ * The actual decoding is done with lzma_code() and freed with lzma_end().
+ */
+extern lzma_ret lzma_stream_tail_decoder(
+ lzma_stream *strm, lzma_stream_flags *options);
diff --git a/src/liblzma/api/lzma/subblock.h b/src/liblzma/api/lzma/subblock.h
new file mode 100644
index 0000000..0474b6a
--- /dev/null
+++ b/src/liblzma/api/lzma/subblock.h
@@ -0,0 +1,197 @@
+/**
+ * \file lzma/subblock.h
+ * \brief Subblock filter
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Filter ID
+ *
+ * Filter ID of the Subblock filter. This is used as lzma_options_filter.id.
+ */
+#define LZMA_FILTER_SUBBLOCK LZMA_VLI_C(0x01)
+
+
+/**
+ * \brief Subfilter mode
+ *
+ * See lzma_options_subblock.subfilter_mode for details.
+ */
+typedef enum {
+ LZMA_SUBFILTER_NONE,
+ /**<
+ * No Subfilter is in use.
+ */
+
+ LZMA_SUBFILTER_SET,
+ /**<
+ * New Subfilter has been requested to be initialized.
+ */
+
+ LZMA_SUBFILTER_RUN,
+ /**<
+ * Subfilter is active.
+ */
+
+ LZMA_SUBFILTER_FINISH
+ /**<
+ * Subfilter has been requested to be finished.
+ */
+} lzma_subfilter_mode;
+
+
+/**
+ * \brief Options for the Subblock filter
+ *
+ * Specifying options for the Subblock filter is optional: if the pointer
+ * options is NULL, no subfilters are allowed and the default value is used
+ * for subblock_data_size.
+ */
+typedef struct {
+ /* Options for encoder and decoder */
+
+ /**
+ * \brief Allowing subfilters
+ *
+ * If this true, subfilters are allowed.
+ *
+ * In the encoder, if this is set to false, subfilter_mode and
+ * subfilter_options are completely ignored.
+ */
+ lzma_bool allow_subfilters;
+
+ /* Options for encoder only */
+
+ /**
+ * \brief Alignment
+ *
+ * The Subblock filter encapsulates the input data into Subblocks.
+ * Each Subblock has a header which takes a few bytes of space.
+ * When the output of the Subblock encoder is fed to another filter
+ * that takes advantage of the alignment of the input data (e.g. LZMA),
+ * the Subblock filter can add padding to keep the actual data parts
+ * in the Subblocks aligned correctly.
+ *
+ * The alignment should be a positive integer. Subblock filter will
+ * add enough padding between Subblocks so that this is true for
+ * every payload byte:
+ * input_offset % alignment == output_offset % alignment
+ *
+ * The Subblock filter assumes that the first output byte will be
+ * written to a position in the output stream that is properly aligned.
+ *
+ * FIXME desc
+ */
+ uint32_t alignment;
+# define LZMA_SUBBLOCK_ALIGNMENT_MIN 1
+# define LZMA_SUBBLOCK_ALIGNMENT_MAX 32
+# define LZMA_SUBBLOCK_ALIGNMENT_DEFAULT 4
+
+ /**
+ * \brief Size of the Subblock Data part of each Subblock
+ *
+ * This value is re-read every time a new Subblock is started.
+ *
+ * Bigger values
+ * - save a few bytes of space;
+ * - increase latency in the encoder (but no effect for decoding);
+ * - decrease memory locality (increased cache pollution) in the
+ * encoder (no effect in decoding).
+ */
+ uint32_t subblock_data_size;
+# define LZMA_SUBBLOCK_DATA_SIZE_MIN 1
+# define LZMA_SUBBLOCK_DATA_SIZE_MAX (UINT32_C(1) << 28)
+# define LZMA_SUBBLOCK_DATA_SIZE_DEFAULT 4096
+
+ /**
+ * \brief Run-length encoder remote control
+ *
+ * The Subblock filter has an internal run-length encoder (RLE). It
+ * can be useful when the data includes byte sequences that repeat
+ * very many times. The RLE can be used also when a Subfilter is
+ * in use; the RLE will be applied to the output of the Subfilter.
+ *
+ * Note that in contrast to traditional RLE, this RLE is intended to
+ * be used only when there's a lot of data to be repeated. If the
+ * input data has e.g. 500 bytes of NULs now and then, this RLE
+ * is probably useless, because plain LZMA should provide better
+ * results.
+ *
+ * Due to above reasons, it was decided to keep the implementation
+ * of the RLE very simple. When the rle variable is non-zero, it
+ * subblock_data_size must be a multiple of rle. Once the Subblock
+ * encoder has got subblock_data_size bytes of input, it will check
+ * if the whole buffer of the last subblock_data_size can be
+ * represented with repeats of chunks having size of rle bytes.
+ *
+ * If there are consecutive identical buffers of subblock_data_size
+ * bytes, they will be encoded using a single repeat entry if
+ * possible.
+ *
+ * If need arises, more advanced RLE can be implemented later
+ * without breaking API or ABI.
+ */
+ uint32_t rle;
+# define LZMA_SUBBLOCK_RLE_OFF 0
+# define LZMA_SUBBLOCK_RLE_MIN 1
+# define LZMA_SUBBLOCK_RLE_MAX 256
+
+ /**
+ * \brief Subfilter remote control
+ *
+ * When the Subblock filter is initialized, this variable must be
+ * LZMA_SUBFILTER_NONE or LZMA_SUBFILTER_SET.
+ *
+ * When subfilter_mode is LZMA_SUBFILTER_NONE, the application may
+ * put Subfilter options to subfilter_options structure, and then
+ * set subfilter_mode to LZMA_SUBFILTER_SET. This implies setting
+ * flush to true. No new input data will be read until the Subfilter
+ * has been enabled. Once the Subfilter has been enabled, liblzma
+ * will set subfilter_mode to LZMA_SUBFILTER_RUN.
+ *
+ * When subfilter_mode is LZMA_SUBFILTER_RUN, the application may
+ * set subfilter_mode to LZMA_SUBFILTER_FINISH. No new input data
+ * will be read until the Subfilter has been finished. Once the
+ * Subfilter has been finished, liblzma will set subfilter_mode
+ * to LZMA_SUBFILTER_NONE.
+ *
+ * If the intent is to have Subfilter enabled to the very end of
+ * the data, it is not needed to separately disable Subfilter with
+ * LZMA_SUBFILTER_FINISH. Using LZMA_FINISH as the second argument
+ * of lzma_code() will make the Subblock encoder to disable the
+ * Subfilter once all the data has been ran through the Subfilter.
+ *
+ * \note This variable is ignored if allow_subfilters is false.
+ */
+ lzma_subfilter_mode subfilter_mode;
+
+ /**
+ * \brief Subfilter and its options
+ *
+ * When no Subfilter is used, the data is copied as is into Subblocks.
+ * Setting a Subfilter allows encoding some parts of the data with
+ * an additional filter. It is possible to many different Subfilters
+ * in the same Block, although only one can be used at once.
+ *
+ * \note This variable is ignored if allow_subfilters is false.
+ */
+ lzma_options_filter subfilter_options;
+
+} lzma_options_subblock;
diff --git a/src/liblzma/api/lzma/version.h b/src/liblzma/api/lzma/version.h
new file mode 100644
index 0000000..ffbf8a8
--- /dev/null
+++ b/src/liblzma/api/lzma/version.h
@@ -0,0 +1,59 @@
+/**
+ * \file lzma/version.h
+ * \brief Version number
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Compile-time version number
+ *
+ * The version number is of format xyyyuuus where
+ * - x is the major LZMA SDK version
+ * - yyy is the minor LZMA SDK version
+ * - uuu is LZMA Utils version (reset to zero every time SDK version
+ * is incremented)
+ * - s indicates stability: 0 = alpha, 1 = beta, 2 = stable
+ */
+#define LZMA_VERSION UINT32_C(40420010)
+
+
+/**
+ * \brief liblzma version number as an integer
+ *
+ * This is the value of LZMA_VERSION macro at the compile time of liblzma.
+ * This allows the application to compare if it was built against the same,
+ * older, or newer version of liblzma that is currently running.
+ */
+extern const uint32_t lzma_version_number;
+
+
+/**
+ * \brief Returns versions number of liblzma as a string
+ *
+ * This function may be useful if you want to display which version of
+ * libilzma your application is currently using.
+ *
+ * \return Returns a pointer to a statically allocated string constant,
+ * which contains the version number of liblzma. The format of
+ * the version string is usually (but not necessarily) x.y.z
+ * e.g. "4.42.1". Alpha and beta versions contain a suffix
+ * ("4.42.0alpha").
+ */
+extern const char *const lzma_version_string;
diff --git a/src/liblzma/api/lzma/vli.h b/src/liblzma/api/lzma/vli.h
new file mode 100644
index 0000000..322014e
--- /dev/null
+++ b/src/liblzma/api/lzma/vli.h
@@ -0,0 +1,244 @@
+/**
+ * \file lzma/vli.h
+ * \brief Variable-length integer handling
+ *
+ * \author Copyright (C) 1999-2006 Igor Pavlov
+ * \author Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+# error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief Maximum supported value of variable-length integer
+ */
+#define LZMA_VLI_VALUE_MAX (UINT64_MAX / 2)
+
+/**
+ * \brief VLI value to denote that the value is unknown
+ */
+#define LZMA_VLI_VALUE_UNKNOWN UINT64_MAX
+
+/**
+ * \brief Maximum supported length of variable length integers
+ */
+#define LZMA_VLI_BYTES_MAX 9
+
+
+/**
+ * \brief VLI constant suffix
+ */
+#define LZMA_VLI_C(n) UINT64_C(n)
+
+
+/**
+ * \brief Variable-length integer type
+ *
+ * This will always be unsigned integer. Valid VLI values are in the range
+ * [0, LZMA_VLI_VALUE_MAX]. Unknown value is indicated with
+ * LZMA_VLI_VALUE_UNKNOWN, which is the maximum value of the underlaying
+ * integer type (this feature is useful in several situations).
+ *
+ * In future, even if lzma_vli is typdefined to something else than uint64_t,
+ * it is guaranteed that 2 * LZMA_VLI_VALUE_MAX will not overflow lzma_vli.
+ * This simplifies integer overflow detection.
+ */
+typedef uint64_t lzma_vli;
+
+
+/**
+ * \brief Simple macro to validate variable-length integer
+ *
+ * This is useful to test that application has given acceptable values
+ * for example in the uncompressed_size and compressed_size variables.
+ *
+ * \return True if the integer is representable as VLI or if it
+ * indicates unknown value.
+ */
+#define lzma_vli_is_valid(vli) \
+ ((vli) <= LZMA_VLI_VALUE_MAX || (vli) == LZMA_VLI_VALUE_UNKNOWN)
+
+
+/**
+ * \brief Sets VLI to given value with error checking
+ *
+ * \param dest Target variable which must have type of lzma_vli.
+ * \param src New value to be stored to dest.
+ * \param limit Maximum allowed value for src.
+ *
+ * \return False on success, true on error. If an error occurred,
+ * dest is left in undefined state (i.e. it's possible that
+ * it will be different in newer liblzma versions).
+ */
+#define lzma_vli_set_lim(dest, src, limit) \
+ ((src) > (limit) || ((dest) = (src)) > (limit))
+
+/**
+ * \brief
+ */
+#define lzma_vli_add_lim(dest, src, limit) \
+ ((src) > (limit) || ((dest) += (src)) > (limit))
+
+#define lzma_vli_add2_lim(dest, src1, src2, limit) \
+ (lzma_vli_add_lim(dest, src1, limit) \
+ || lzma_vli_add_lim(dest, src2, limit))
+
+#define lzma_vli_add3_lim(dest, src1, src2, src3, limit) \
+ (lzma_vli_add_lim(dest, src1, limit) \
+ || lzma_vli_add_lim(dest, src2, limit) \
+ || lzma_vli_add_lim(dest, src3, limit))
+
+#define lzma_vli_add4_lim(dest, src1, src2, src3, src4, limit) \
+ (lzma_vli_add_lim(dest, src1, limit) \
+ || lzma_vli_add_lim(dest, src2, limit) \
+ || lzma_vli_add_lim(dest, src3, limit) \
+ || lzma_vli_add_lim(dest, src4, limit))
+
+#define lzma_vli_sum_lim(dest, src1, src2, limit) \
+ (lzma_vli_set_lim(dest, src1, limit) \
+ || lzma_vli_add_lim(dest, src2, limit))
+
+#define lzma_vli_sum3_lim(dest, src1, src2, src3, limit) \
+ (lzma_vli_set_lim(dest, src1, limit) \
+ || lzma_vli_add_lim(dest, src2, limit) \
+ || lzma_vli_add_lim(dest, src3, limit))
+
+#define lzma_vli_sum4_lim(dest, src1, src2, src3, src4, limit) \
+ (lzma_vli_set_lim(dest, src1, limit) \
+ || lzma_vli_add_lim(dest, src2, limit) \
+ || lzma_vli_add_lim(dest, src3, limit) \
+ || lzma_vli_add_lim(dest, src4, limit))
+
+#define lzma_vli_set(dest, src) lzma_vli_set_lim(dest, src, LZMA_VLI_VALUE_MAX)
+
+#define lzma_vli_add(dest, src) lzma_vli_add_lim(dest, src, LZMA_VLI_VALUE_MAX)
+
+#define lzma_vli_add2(dest, src1, src2) \
+ lzma_vli_add2_lim(dest, src1, src2, LZMA_VLI_VALUE_MAX)
+
+#define lzma_vli_add3(dest, src1, src2, src3) \
+ lzma_vli_add3_lim(dest, src1, src2, src3, LZMA_VLI_VALUE_MAX)
+
+#define lzma_vli_add4(dest, src1, src2, src3, src4) \
+ lzma_vli_add4_lim(dest, src1, src2, src3, src4, LZMA_VLI_VALUE_MAX)
+
+#define lzma_vli_sum(dest, src1, src2) \
+ lzma_vli_sum_lim(dest, src1, src2, LZMA_VLI_VALUE_MAX)
+
+#define lzma_vli_sum3(dest, src1, src2, src3) \
+ lzma_vli_sum3_lim(dest, src1, src2, src3, LZMA_VLI_VALUE_MAX)
+
+#define lzma_vli_sum4(dest, src1, src2, src3, src4) \
+ lzma_vli_sum4_lim(dest, src1, src2, src3, src4, LZMA_VLI_VALUE_MAX)
+
+
+/**
+ * \brief Encodes variable-length integer
+ *
+ * In the new .lzma format, most integers are encoded in variable-length
+ * representation. This saves space when smaller values are more likely
+ * than bigger values.
+ *
+ * The encoding scheme encodes seven bits to every byte, using minimum
+ * number of bytes required to represent the given value. In other words,
+ * it puts 7-63 bits into 1-9 bytes. This implementation limits the number
+ * of bits used to 63, thus num must be at maximum of INT64_MAX / 2. You
+ * may use LZMA_VLI_VALUE_MAX for clarity.
+ *
+ * \param vli Integer to be encoded
+ * \param vli_pos How many bytes have already been written out. This
+ * must be less than 9 before calling this function.
+ * \param vli_size Minimum size that the variable-length representation
+ * must take. This is useful if you want to use
+ * variable-length integers as padding. Usually you want
+ * to set this to zero. The maximum allowed value is 9.
+ * \param out Beginning of the output buffer
+ * \param out_pos The next byte will be written to out[*out_pos].
+ * \param out_size Size of the out buffer; the first byte into
+ * which no data is written to is out[out_size].
+ *
+ * \return - LZMA_OK: So far all OK, but the integer is not
+ * completely written out yet.
+ * - LZMA_STREAM_END: Integer successfully encoded.
+ * - LZMA_BUF_ERROR: No output space (*out_pos == out_size)
+ * - LZMA_PROG_ERROR: Arguments are not sane.
+ */
+extern lzma_ret lzma_vli_encode(
+ lzma_vli vli, size_t *lzma_restrict vli_pos, size_t vli_size,
+ uint8_t *lzma_restrict out, size_t *lzma_restrict out_pos,
+ size_t out_size);
+
+
+/**
+ * \brief Decodes variable-length integer
+ *
+ * \param vli Pointer to decoded integer. The decoder will
+ * initialize it to zero when *vli_pos == 0, so
+ * application isn't required to initialize *vli.
+ * \param vli_pos How many bytes have already been decoded. When
+ * starting to decode a new integer, *vli_pos must
+ * be initialized to zero.
+ * \param in Beginning of the input buffer
+ * \param in_pos The next byte will be read from in[*in_pos].
+ * \param in_size Size of the input buffer; the first byte that
+ * won't be read is in[in_size].
+ *
+ * \return - LZMA_OK: So far all OK, but the integer is not
+ * completely decoded yet.
+ * - LZMA_STREAM_END: Integer successfully decoded.
+ * - LZMA_BUF_ERROR: No input data (*in_pos == in_size)
+ * - LZMA_DATA_ERROR: Integer is longer than nine bytes.
+ * - LZMA_PROG_ERROR: Arguments are not sane.
+ */
+extern lzma_ret lzma_vli_decode(lzma_vli *lzma_restrict vli,
+ size_t *lzma_restrict vli_pos, const uint8_t *lzma_restrict in,
+ size_t *lzma_restrict in_pos, size_t in_size);
+
+
+/**
+ * \brief Decodes variable-length integer reading buffer backwards
+ *
+ * The variable-length integer encoding is designed so that it can be read
+ * either from the beginning to the end, or from the end to the beginning.
+ * This feature is needed to make the Stream parseable backwards;
+ * specifically, to read the Backward Size field in Stream Footer.
+ *
+ * \param vli Pointer to variable to hold the decoded integer.
+ * \param in Beginning of the input buffer
+ * \param in_size Number of bytes available in the in[] buffer.
+ * On successful decoding, this is updated to match
+ * the number of bytes used. (in[*in_size - 1] is the
+ * first byte to process. After successful decoding,
+ * in[*in_size] will point to the first byte of the
+ * variable-length integer.)
+ *
+ * \return - LZMA_OK: Decoding successful
+ * - LZMA_DATA_ERROR: No valid variable-length integer was found.
+ * - LZMA_BUF_ERROR: Not enough input. Note that in practice,
+ * this tends to be a sign of broken input, because the
+ * applications usually do give as much input to this function
+ * as the applications have available.
+ */
+extern lzma_ret lzma_vli_reverse_decode(
+ lzma_vli *vli, const uint8_t *in, size_t *in_size);
+
+
+/**
+ * \brief Gets the minimum number of bytes required to encode vli
+ *
+ * \return Number of bytes on success (1-9). If vli isn't valid,
+ * zero is returned.
+ */
+extern size_t lzma_vli_size(lzma_vli vli);
diff --git a/src/liblzma/check/Makefile.am b/src/liblzma/check/Makefile.am
new file mode 100644
index 0000000..f00d71a
--- /dev/null
+++ b/src/liblzma/check/Makefile.am
@@ -0,0 +1,64 @@
+##
+## This code has been put into the public domain.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+EXTRA_DIST = crc32_tablegen.c crc64_tablegen.c
+
+noinst_LTLIBRARIES = libcheck.la
+libcheck_la_SOURCES = \
+ check.c \
+ check.h \
+ check_init.c \
+ check_byteswap.h \
+ crc_macros.h
+libcheck_la_CPPFLAGS = \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_srcdir@/src/liblzma/common
+
+if COND_CHECK_CRC32
+
+if COND_ASM_X86
+libcheck_la_SOURCES += crc32_x86.s
+else
+libcheck_la_SOURCES += crc32.c
+endif
+
+if COND_SMALL
+libcheck_la_SOURCES += crc32_init.c
+else
+libcheck_la_SOURCES += crc32_table.c crc32_table_le.h crc32_table_be.h
+endif
+
+endif
+
+
+if COND_CHECK_CRC64
+
+if COND_ASM_X86
+libcheck_la_SOURCES += crc64_x86.s
+else
+libcheck_la_SOURCES += crc64.c
+endif
+
+if COND_SMALL
+libcheck_la_SOURCES += crc64_init.c
+else
+libcheck_la_SOURCES += crc64_table.c crc64_table_le.h crc64_table_be.h
+endif
+
+endif
+
+
+if COND_CHECK_SHA256
+libcheck_la_SOURCES += sha256.c
+# Hide bogus warning to allow usage of -Werror. If more issues like this
+# pop up, we'll drop -Werror.
+if COND_WNO_UNINITIALIZED
+CFLAGS += -Wno-uninitialized
+endif
+endif
diff --git a/src/liblzma/check/check.c b/src/liblzma/check/check.c
new file mode 100644
index 0000000..ba59af2
--- /dev/null
+++ b/src/liblzma/check/check.c
@@ -0,0 +1,160 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file check.c
+/// \brief Check sizes
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "check.h"
+
+// See the .lzma header format specification section 2.2.2.
+LZMA_API const uint32_t lzma_check_sizes[8] = { 0, 4, 4, 8, 16, 32, 32, 64 };
+
+
+LZMA_API const lzma_bool lzma_available_checks[LZMA_CHECK_ID_MAX + 1] = {
+ true, // LZMA_CHECK_NONE
+
+#ifdef HAVE_CHECK_CRC32
+ true,
+#else
+ false,
+#endif
+
+ false, // Reserved
+
+#ifdef HAVE_CHECK_CRC64
+ true,
+#else
+ false,
+#endif
+
+ false, // Reserved
+
+#ifdef HAVE_CHECK_SHA256
+ true,
+#else
+ false,
+#endif
+
+ false, // Reserved
+ false, // Reserved
+};
+
+
+extern lzma_ret
+lzma_check_init(lzma_check *check, lzma_check_type type)
+{
+ lzma_ret ret = LZMA_OK;
+
+ switch (type) {
+ case LZMA_CHECK_NONE:
+ break;
+
+#ifdef HAVE_CHECK_CRC32
+ case LZMA_CHECK_CRC32:
+ check->crc32 = 0;
+ break;
+#endif
+
+#ifdef HAVE_CHECK_CRC64
+ case LZMA_CHECK_CRC64:
+ check->crc64 = 0;
+ break;
+#endif
+
+#ifdef HAVE_CHECK_SHA256
+ case LZMA_CHECK_SHA256:
+ lzma_sha256_init(&check->sha256);
+ break;
+#endif
+
+ default:
+ if (type <= LZMA_CHECK_ID_MAX)
+ ret = LZMA_UNSUPPORTED_CHECK;
+ else
+ ret = LZMA_PROG_ERROR;
+ break;
+ }
+
+ return ret;
+}
+
+
+extern void
+lzma_check_update(lzma_check *check, lzma_check_type type,
+ const uint8_t *buf, size_t size)
+{
+ switch (type) {
+#ifdef HAVE_CHECK_CRC32
+ case LZMA_CHECK_CRC32:
+ check->crc32 = lzma_crc32(buf, size, check->crc32);
+ break;
+#endif
+
+#ifdef HAVE_CHECK_CRC64
+ case LZMA_CHECK_CRC64:
+ check->crc64 = lzma_crc64(buf, size, check->crc64);
+ break;
+#endif
+
+#ifdef HAVE_CHECK_SHA256
+ case LZMA_CHECK_SHA256:
+ lzma_sha256_update(buf, size, &check->sha256);
+ break;
+#endif
+
+ default:
+ break;
+ }
+
+ return;
+}
+
+
+extern void
+lzma_check_finish(lzma_check *check, lzma_check_type type)
+{
+#ifdef HAVE_CHECK_SHA256
+ if (type == LZMA_CHECK_SHA256)
+ lzma_sha256_finish(&check->sha256);
+#endif
+
+ return;
+}
+
+
+/*
+extern bool
+lzma_check_compare(
+ lzma_check *check1, lzma_check *check2, lzma_check_type type)
+{
+ bool ret;
+
+ switch (type) {
+ case LZMA_CHECK_NONE:
+ break;
+
+ case LZMA_CHECK_CRC32:
+ ret = check1->crc32 != check2->crc32;
+ break;
+
+ case LZMA_CHECK_CRC64:
+ ret = check1->crc64 != check2->crc64;
+ break;
+
+ default:
+ // Unsupported check
+ assert(type <= 7);
+ ret = false;
+ break;
+ }
+
+ return ret;
+}
+*/
diff --git a/src/liblzma/check/check.h b/src/liblzma/check/check.h
new file mode 100644
index 0000000..74279ce
--- /dev/null
+++ b/src/liblzma/check/check.h
@@ -0,0 +1,102 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file check.h
+/// \brief Prototypes for different check functions
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_CHECK_H
+#define LZMA_CHECK_H
+
+#include "common.h"
+
+
+typedef struct {
+ /// Internal state
+ uint32_t state[8];
+
+ /// Temporary 8-byte aligned buffer to hold incomplete chunk.
+ /// After lzma_check_finish(), the first 32 bytes will contain
+ /// the final digest in big endian byte order.
+ uint8_t buffer[64];
+
+ /// Size of the message excluding padding
+ uint64_t size;
+
+} lzma_sha256;
+
+
+/// \note This is not in the public API because this structure will
+/// change in future.
+typedef union {
+ uint32_t crc32;
+ uint64_t crc64;
+ lzma_sha256 sha256;
+} lzma_check;
+
+
+#ifdef HAVE_SMALL
+extern uint32_t lzma_crc32_table[8][256];
+extern uint64_t lzma_crc64_table[4][256];
+#else
+extern const uint32_t lzma_crc32_table[8][256];
+extern const uint64_t lzma_crc64_table[4][256];
+#endif
+
+// Generic
+
+/// \brief Initializes *check depending on type
+///
+/// \return LZMA_OK on success. LZMA_UNSUPPORTED_CHECK if the type is not
+/// supported by the current version or build of liblzma.
+/// LZMA_PROG_ERROR if type > LZMA_CHECK_ID_MAX.
+///
+extern lzma_ret lzma_check_init(lzma_check *check, lzma_check_type type);
+
+/// \brief Updates *check
+///
+extern void lzma_check_update(lzma_check *check, lzma_check_type type,
+ const uint8_t *buf, size_t size);
+
+/// \brief Finishes *check
+///
+extern void lzma_check_finish(lzma_check *check, lzma_check_type type);
+
+
+/*
+/// \brief Compare two checks
+///
+/// \return false if the checks are identical; true if they differ.
+///
+extern bool lzma_check_compare(
+ lzma_check *check1, lzma_check *check2, lzma_check_type type);
+*/
+
+
+// CRC32
+
+extern void lzma_crc32_init(void);
+
+
+// CRC64
+
+extern void lzma_crc64_init(void);
+
+
+// SHA256
+
+extern void lzma_sha256_init(lzma_sha256 *sha256);
+
+extern void lzma_sha256_update(
+ const uint8_t *buf, size_t size, lzma_sha256 *sha256);
+
+extern void lzma_sha256_finish(lzma_sha256 *sha256);
+
+
+#endif
diff --git a/src/liblzma/check/check_byteswap.h b/src/liblzma/check/check_byteswap.h
new file mode 100644
index 0000000..264def2
--- /dev/null
+++ b/src/liblzma/check/check_byteswap.h
@@ -0,0 +1,43 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file check_byteswap.h
+/// \brief Byteswapping needed by the checks
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_CHECK_BYTESWAP_H
+#define LZMA_CHECK_BYTESWAP_H
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+// byteswap.h is a GNU extension. It contains inline assembly versions
+// for byteswapping. When byteswap.h is not available, we use generic code.
+#ifdef HAVE_BYTESWAP_H
+# include <byteswap.h>
+#else
+# define bswap_32(num) \
+ ( (((num) << 24) ) \
+ | (((num) << 8) & UINT32_C(0x00FF0000)) \
+ | (((num) >> 8) & UINT32_C(0x0000FF00)) \
+ | (((num) >> 24) ) )
+
+# define bswap_64(num) \
+ ( (((num) << 56) ) \
+ | (((num) << 40) & UINT64_C(0x00FF000000000000)) \
+ | (((num) << 24) & UINT64_C(0x0000FF0000000000)) \
+ | (((num) << 8) & UINT64_C(0x000000FF00000000)) \
+ | (((num) >> 8) & UINT64_C(0x00000000FF000000)) \
+ | (((num) >> 24) & UINT64_C(0x0000000000FF0000)) \
+ | (((num) >> 40) & UINT64_C(0x000000000000FF00)) \
+ | (((num) >> 56) ) )
+#endif
+
+#endif
diff --git a/src/liblzma/check/check_init.c b/src/liblzma/check/check_init.c
new file mode 100644
index 0000000..1b2cfe0
--- /dev/null
+++ b/src/liblzma/check/check_init.c
@@ -0,0 +1,37 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file check_init.c
+/// \brief Static initializations for integrity checks
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "check.h"
+
+
+extern LZMA_API void
+lzma_init_check(void)
+{
+#ifdef HAVE_SMALL
+ static bool already_initialized = false;
+ if (already_initialized)
+ return;
+
+# ifdef HAVE_CHECK_CRC32
+ lzma_crc32_init();
+# endif
+
+# ifdef HAVE_CHECK_CRC64
+ lzma_crc64_init();
+# endif
+
+ already_initialized = true;
+#endif
+
+ return;
+}
diff --git a/src/liblzma/check/crc32.c b/src/liblzma/check/crc32.c
new file mode 100644
index 0000000..091e142
--- /dev/null
+++ b/src/liblzma/check/crc32.c
@@ -0,0 +1,88 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc32.c
+/// \brief CRC32 calculation
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "check.h"
+#include "crc_macros.h"
+
+
+// If you make any changes, do some bench marking! Seemingly unrelated
+// changes can very easily ruin the performance (and very probably is
+// very compiler dependent).
+extern uint32_t
+lzma_crc32(const uint8_t *buf, size_t size, uint32_t crc)
+{
+ crc = ~crc;
+
+#ifdef WORDS_BIGENDIAN
+ crc = bswap_32(crc);
+#endif
+
+ if (size > 8) {
+ // Fix the alignment, if needed. The if statement above
+ // ensures that this won't read past the end of buf[].
+ while ((uintptr_t)(buf) & 7) {
+ crc = lzma_crc32_table[0][*buf++ ^ A(crc)] ^ S8(crc);
+ --size;
+ }
+
+ // Calculate the position where to stop.
+ const uint8_t *const limit = buf + (size & ~(size_t)(7));
+
+ // Calculate how many bytes must be calculated separately
+ // before returning the result.
+ size &= (size_t)(7);
+
+ // Calculate the CRC32 using the slice-by-eight algorithm.
+ // It is explained in this document:
+ // http://www.intel.com/technology/comms/perfnet/download/CRC_generators.pdf
+ //
+ // The code below is different than the code in Intel's
+ // paper, but the principle is identical. This should be
+ // faster with GCC than Intel's code. This is tested only
+ // with GCC 3.4.6 and 4.1.2 on x86, so your results may vary.
+ //
+ // Using -Os and -fomit-frame-pointer seem to give the best
+ // results at least with GCC 4.1.2 on x86. It's sill far
+ // from the speed of hand-optimized assembler.
+ while (buf < limit) {
+ crc ^= *(uint32_t *)(buf);
+ buf += 4;
+
+ crc = lzma_crc32_table[7][A(crc)]
+ ^ lzma_crc32_table[6][B(crc)]
+ ^ lzma_crc32_table[5][C(crc)]
+ ^ lzma_crc32_table[4][D(crc)];
+
+ const uint32_t tmp = *(uint32_t *)(buf);
+ buf += 4;
+
+ // It is critical for performance, that
+ // the crc variable is XORed between the
+ // two table-lookup pairs.
+ crc = lzma_crc32_table[3][A(tmp)]
+ ^ lzma_crc32_table[2][B(tmp)]
+ ^ crc
+ ^ lzma_crc32_table[1][C(tmp)]
+ ^ lzma_crc32_table[0][D(tmp)];
+ }
+ }
+
+ while (size-- != 0)
+ crc = lzma_crc32_table[0][*buf++ ^ A(crc)] ^ S8(crc);
+
+#ifdef WORDS_BIGENDIAN
+ crc = bswap_32(crc);
+#endif
+
+ return ~crc;
+}
diff --git a/src/liblzma/check/crc32_init.c b/src/liblzma/check/crc32_init.c
new file mode 100644
index 0000000..eee9040
--- /dev/null
+++ b/src/liblzma/check/crc32_init.c
@@ -0,0 +1,58 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc32_init.c
+/// \brief CRC32 table initialization
+//
+// This code is based on various public domain sources.
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <inttypes.h>
+
+#ifdef WORDS_BIGENDIAN
+# include "check_byteswap.h"
+#endif
+
+
+uint32_t lzma_crc32_table[8][256];
+
+
+extern void
+lzma_crc32_init(void)
+{
+ static const uint32_t poly32 = UINT32_C(0xEDB88320);
+
+ for (size_t s = 0; s < 8; ++s) {
+ for (size_t b = 0; b < 256; ++b) {
+ uint32_t r = s == 0 ? b : lzma_crc32_table[s - 1][b];
+
+ for (size_t i = 0; i < 8; ++i) {
+ if (r & 1)
+ r = (r >> 1) ^ poly32;
+ else
+ r >>= 1;
+ }
+
+ lzma_crc32_table[s][b] = r;
+ }
+ }
+
+#ifdef WORDS_BIGENDIAN
+ for (size_t s = 0; s < 8; ++s)
+ for (size_t b = 0; b < 256; ++b)
+ lzma_crc32_table[s][b]
+ = bswap_32(lzma_crc32_table[s][b]);
+#endif
+
+ return;
+}
diff --git a/src/liblzma/check/crc32_table.c b/src/liblzma/check/crc32_table.c
new file mode 100644
index 0000000..b59642d
--- /dev/null
+++ b/src/liblzma/check/crc32_table.c
@@ -0,0 +1,22 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc32_table.c
+/// \brief Precalculated CRC32 table with correct endianness
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef WORDS_BIGENDIAN
+# include "crc32_table_be.h"
+#else
+# include "crc32_table_le.h"
+#endif
diff --git a/src/liblzma/check/crc32_table_be.h b/src/liblzma/check/crc32_table_be.h
new file mode 100644
index 0000000..bc5a5fb
--- /dev/null
+++ b/src/liblzma/check/crc32_table_be.h
@@ -0,0 +1,527 @@
+/* This file has been automatically generated by crc32_tablegen.c. */
+
+#include <inttypes.h>
+
+const uint32_t lzma_crc32_table[8][256] = {
+ {
+ 0x00000000, 0x96300777, 0x2C610EEE, 0xBA510999,
+ 0x19C46D07, 0x8FF46A70, 0x35A563E9, 0xA395649E,
+ 0x3288DB0E, 0xA4B8DC79, 0x1EE9D5E0, 0x88D9D297,
+ 0x2B4CB609, 0xBD7CB17E, 0x072DB8E7, 0x911DBF90,
+ 0x6410B71D, 0xF220B06A, 0x4871B9F3, 0xDE41BE84,
+ 0x7DD4DA1A, 0xEBE4DD6D, 0x51B5D4F4, 0xC785D383,
+ 0x56986C13, 0xC0A86B64, 0x7AF962FD, 0xECC9658A,
+ 0x4F5C0114, 0xD96C0663, 0x633D0FFA, 0xF50D088D,
+ 0xC8206E3B, 0x5E10694C, 0xE44160D5, 0x727167A2,
+ 0xD1E4033C, 0x47D4044B, 0xFD850DD2, 0x6BB50AA5,
+ 0xFAA8B535, 0x6C98B242, 0xD6C9BBDB, 0x40F9BCAC,
+ 0xE36CD832, 0x755CDF45, 0xCF0DD6DC, 0x593DD1AB,
+ 0xAC30D926, 0x3A00DE51, 0x8051D7C8, 0x1661D0BF,
+ 0xB5F4B421, 0x23C4B356, 0x9995BACF, 0x0FA5BDB8,
+ 0x9EB80228, 0x0888055F, 0xB2D90CC6, 0x24E90BB1,
+ 0x877C6F2F, 0x114C6858, 0xAB1D61C1, 0x3D2D66B6,
+ 0x9041DC76, 0x0671DB01, 0xBC20D298, 0x2A10D5EF,
+ 0x8985B171, 0x1FB5B606, 0xA5E4BF9F, 0x33D4B8E8,
+ 0xA2C90778, 0x34F9000F, 0x8EA80996, 0x18980EE1,
+ 0xBB0D6A7F, 0x2D3D6D08, 0x976C6491, 0x015C63E6,
+ 0xF4516B6B, 0x62616C1C, 0xD8306585, 0x4E0062F2,
+ 0xED95066C, 0x7BA5011B, 0xC1F40882, 0x57C40FF5,
+ 0xC6D9B065, 0x50E9B712, 0xEAB8BE8B, 0x7C88B9FC,
+ 0xDF1DDD62, 0x492DDA15, 0xF37CD38C, 0x654CD4FB,
+ 0x5861B24D, 0xCE51B53A, 0x7400BCA3, 0xE230BBD4,
+ 0x41A5DF4A, 0xD795D83D, 0x6DC4D1A4, 0xFBF4D6D3,
+ 0x6AE96943, 0xFCD96E34, 0x468867AD, 0xD0B860DA,
+ 0x732D0444, 0xE51D0333, 0x5F4C0AAA, 0xC97C0DDD,
+ 0x3C710550, 0xAA410227, 0x10100BBE, 0x86200CC9,
+ 0x25B56857, 0xB3856F20, 0x09D466B9, 0x9FE461CE,
+ 0x0EF9DE5E, 0x98C9D929, 0x2298D0B0, 0xB4A8D7C7,
+ 0x173DB359, 0x810DB42E, 0x3B5CBDB7, 0xAD6CBAC0,
+ 0x2083B8ED, 0xB6B3BF9A, 0x0CE2B603, 0x9AD2B174,
+ 0x3947D5EA, 0xAF77D29D, 0x1526DB04, 0x8316DC73,
+ 0x120B63E3, 0x843B6494, 0x3E6A6D0D, 0xA85A6A7A,
+ 0x0BCF0EE4, 0x9DFF0993, 0x27AE000A, 0xB19E077D,
+ 0x44930FF0, 0xD2A30887, 0x68F2011E, 0xFEC20669,
+ 0x5D5762F7, 0xCB676580, 0x71366C19, 0xE7066B6E,
+ 0x761BD4FE, 0xE02BD389, 0x5A7ADA10, 0xCC4ADD67,
+ 0x6FDFB9F9, 0xF9EFBE8E, 0x43BEB717, 0xD58EB060,
+ 0xE8A3D6D6, 0x7E93D1A1, 0xC4C2D838, 0x52F2DF4F,
+ 0xF167BBD1, 0x6757BCA6, 0xDD06B53F, 0x4B36B248,
+ 0xDA2B0DD8, 0x4C1B0AAF, 0xF64A0336, 0x607A0441,
+ 0xC3EF60DF, 0x55DF67A8, 0xEF8E6E31, 0x79BE6946,
+ 0x8CB361CB, 0x1A8366BC, 0xA0D26F25, 0x36E26852,
+ 0x95770CCC, 0x03470BBB, 0xB9160222, 0x2F260555,
+ 0xBE3BBAC5, 0x280BBDB2, 0x925AB42B, 0x046AB35C,
+ 0xA7FFD7C2, 0x31CFD0B5, 0x8B9ED92C, 0x1DAEDE5B,
+ 0xB0C2649B, 0x26F263EC, 0x9CA36A75, 0x0A936D02,
+ 0xA906099C, 0x3F360EEB, 0x85670772, 0x13570005,
+ 0x824ABF95, 0x147AB8E2, 0xAE2BB17B, 0x381BB60C,
+ 0x9B8ED292, 0x0DBED5E5, 0xB7EFDC7C, 0x21DFDB0B,
+ 0xD4D2D386, 0x42E2D4F1, 0xF8B3DD68, 0x6E83DA1F,
+ 0xCD16BE81, 0x5B26B9F6, 0xE177B06F, 0x7747B718,
+ 0xE65A0888, 0x706A0FFF, 0xCA3B0666, 0x5C0B0111,
+ 0xFF9E658F, 0x69AE62F8, 0xD3FF6B61, 0x45CF6C16,
+ 0x78E20AA0, 0xEED20DD7, 0x5483044E, 0xC2B30339,
+ 0x612667A7, 0xF71660D0, 0x4D476949, 0xDB776E3E,
+ 0x4A6AD1AE, 0xDC5AD6D9, 0x660BDF40, 0xF03BD837,
+ 0x53AEBCA9, 0xC59EBBDE, 0x7FCFB247, 0xE9FFB530,
+ 0x1CF2BDBD, 0x8AC2BACA, 0x3093B353, 0xA6A3B424,
+ 0x0536D0BA, 0x9306D7CD, 0x2957DE54, 0xBF67D923,
+ 0x2E7A66B3, 0xB84A61C4, 0x021B685D, 0x942B6F2A,
+ 0x37BE0BB4, 0xA18E0CC3, 0x1BDF055A, 0x8DEF022D
+ }, {
+ 0x00000000, 0x41311B19, 0x82623632, 0xC3532D2B,
+ 0x04C56C64, 0x45F4777D, 0x86A75A56, 0xC796414F,
+ 0x088AD9C8, 0x49BBC2D1, 0x8AE8EFFA, 0xCBD9F4E3,
+ 0x0C4FB5AC, 0x4D7EAEB5, 0x8E2D839E, 0xCF1C9887,
+ 0x5112C24A, 0x1023D953, 0xD370F478, 0x9241EF61,
+ 0x55D7AE2E, 0x14E6B537, 0xD7B5981C, 0x96848305,
+ 0x59981B82, 0x18A9009B, 0xDBFA2DB0, 0x9ACB36A9,
+ 0x5D5D77E6, 0x1C6C6CFF, 0xDF3F41D4, 0x9E0E5ACD,
+ 0xA2248495, 0xE3159F8C, 0x2046B2A7, 0x6177A9BE,
+ 0xA6E1E8F1, 0xE7D0F3E8, 0x2483DEC3, 0x65B2C5DA,
+ 0xAAAE5D5D, 0xEB9F4644, 0x28CC6B6F, 0x69FD7076,
+ 0xAE6B3139, 0xEF5A2A20, 0x2C09070B, 0x6D381C12,
+ 0xF33646DF, 0xB2075DC6, 0x715470ED, 0x30656BF4,
+ 0xF7F32ABB, 0xB6C231A2, 0x75911C89, 0x34A00790,
+ 0xFBBC9F17, 0xBA8D840E, 0x79DEA925, 0x38EFB23C,
+ 0xFF79F373, 0xBE48E86A, 0x7D1BC541, 0x3C2ADE58,
+ 0x054F79F0, 0x447E62E9, 0x872D4FC2, 0xC61C54DB,
+ 0x018A1594, 0x40BB0E8D, 0x83E823A6, 0xC2D938BF,
+ 0x0DC5A038, 0x4CF4BB21, 0x8FA7960A, 0xCE968D13,
+ 0x0900CC5C, 0x4831D745, 0x8B62FA6E, 0xCA53E177,
+ 0x545DBBBA, 0x156CA0A3, 0xD63F8D88, 0x970E9691,
+ 0x5098D7DE, 0x11A9CCC7, 0xD2FAE1EC, 0x93CBFAF5,
+ 0x5CD76272, 0x1DE6796B, 0xDEB55440, 0x9F844F59,
+ 0x58120E16, 0x1923150F, 0xDA703824, 0x9B41233D,
+ 0xA76BFD65, 0xE65AE67C, 0x2509CB57, 0x6438D04E,
+ 0xA3AE9101, 0xE29F8A18, 0x21CCA733, 0x60FDBC2A,
+ 0xAFE124AD, 0xEED03FB4, 0x2D83129F, 0x6CB20986,
+ 0xAB2448C9, 0xEA1553D0, 0x29467EFB, 0x687765E2,
+ 0xF6793F2F, 0xB7482436, 0x741B091D, 0x352A1204,
+ 0xF2BC534B, 0xB38D4852, 0x70DE6579, 0x31EF7E60,
+ 0xFEF3E6E7, 0xBFC2FDFE, 0x7C91D0D5, 0x3DA0CBCC,
+ 0xFA368A83, 0xBB07919A, 0x7854BCB1, 0x3965A7A8,
+ 0x4B98833B, 0x0AA99822, 0xC9FAB509, 0x88CBAE10,
+ 0x4F5DEF5F, 0x0E6CF446, 0xCD3FD96D, 0x8C0EC274,
+ 0x43125AF3, 0x022341EA, 0xC1706CC1, 0x804177D8,
+ 0x47D73697, 0x06E62D8E, 0xC5B500A5, 0x84841BBC,
+ 0x1A8A4171, 0x5BBB5A68, 0x98E87743, 0xD9D96C5A,
+ 0x1E4F2D15, 0x5F7E360C, 0x9C2D1B27, 0xDD1C003E,
+ 0x120098B9, 0x533183A0, 0x9062AE8B, 0xD153B592,
+ 0x16C5F4DD, 0x57F4EFC4, 0x94A7C2EF, 0xD596D9F6,
+ 0xE9BC07AE, 0xA88D1CB7, 0x6BDE319C, 0x2AEF2A85,
+ 0xED796BCA, 0xAC4870D3, 0x6F1B5DF8, 0x2E2A46E1,
+ 0xE136DE66, 0xA007C57F, 0x6354E854, 0x2265F34D,
+ 0xE5F3B202, 0xA4C2A91B, 0x67918430, 0x26A09F29,
+ 0xB8AEC5E4, 0xF99FDEFD, 0x3ACCF3D6, 0x7BFDE8CF,
+ 0xBC6BA980, 0xFD5AB299, 0x3E099FB2, 0x7F3884AB,
+ 0xB0241C2C, 0xF1150735, 0x32462A1E, 0x73773107,
+ 0xB4E17048, 0xF5D06B51, 0x3683467A, 0x77B25D63,
+ 0x4ED7FACB, 0x0FE6E1D2, 0xCCB5CCF9, 0x8D84D7E0,
+ 0x4A1296AF, 0x0B238DB6, 0xC870A09D, 0x8941BB84,
+ 0x465D2303, 0x076C381A, 0xC43F1531, 0x850E0E28,
+ 0x42984F67, 0x03A9547E, 0xC0FA7955, 0x81CB624C,
+ 0x1FC53881, 0x5EF42398, 0x9DA70EB3, 0xDC9615AA,
+ 0x1B0054E5, 0x5A314FFC, 0x996262D7, 0xD85379CE,
+ 0x174FE149, 0x567EFA50, 0x952DD77B, 0xD41CCC62,
+ 0x138A8D2D, 0x52BB9634, 0x91E8BB1F, 0xD0D9A006,
+ 0xECF37E5E, 0xADC26547, 0x6E91486C, 0x2FA05375,
+ 0xE836123A, 0xA9070923, 0x6A542408, 0x2B653F11,
+ 0xE479A796, 0xA548BC8F, 0x661B91A4, 0x272A8ABD,
+ 0xE0BCCBF2, 0xA18DD0EB, 0x62DEFDC0, 0x23EFE6D9,
+ 0xBDE1BC14, 0xFCD0A70D, 0x3F838A26, 0x7EB2913F,
+ 0xB924D070, 0xF815CB69, 0x3B46E642, 0x7A77FD5B,
+ 0xB56B65DC, 0xF45A7EC5, 0x370953EE, 0x763848F7,
+ 0xB1AE09B8, 0xF09F12A1, 0x33CC3F8A, 0x72FD2493
+ }, {
+ 0x00000000, 0x376AC201, 0x6ED48403, 0x59BE4602,
+ 0xDCA80907, 0xEBC2CB06, 0xB27C8D04, 0x85164F05,
+ 0xB851130E, 0x8F3BD10F, 0xD685970D, 0xE1EF550C,
+ 0x64F91A09, 0x5393D808, 0x0A2D9E0A, 0x3D475C0B,
+ 0x70A3261C, 0x47C9E41D, 0x1E77A21F, 0x291D601E,
+ 0xAC0B2F1B, 0x9B61ED1A, 0xC2DFAB18, 0xF5B56919,
+ 0xC8F23512, 0xFF98F713, 0xA626B111, 0x914C7310,
+ 0x145A3C15, 0x2330FE14, 0x7A8EB816, 0x4DE47A17,
+ 0xE0464D38, 0xD72C8F39, 0x8E92C93B, 0xB9F80B3A,
+ 0x3CEE443F, 0x0B84863E, 0x523AC03C, 0x6550023D,
+ 0x58175E36, 0x6F7D9C37, 0x36C3DA35, 0x01A91834,
+ 0x84BF5731, 0xB3D59530, 0xEA6BD332, 0xDD011133,
+ 0x90E56B24, 0xA78FA925, 0xFE31EF27, 0xC95B2D26,
+ 0x4C4D6223, 0x7B27A022, 0x2299E620, 0x15F32421,
+ 0x28B4782A, 0x1FDEBA2B, 0x4660FC29, 0x710A3E28,
+ 0xF41C712D, 0xC376B32C, 0x9AC8F52E, 0xADA2372F,
+ 0xC08D9A70, 0xF7E75871, 0xAE591E73, 0x9933DC72,
+ 0x1C259377, 0x2B4F5176, 0x72F11774, 0x459BD575,
+ 0x78DC897E, 0x4FB64B7F, 0x16080D7D, 0x2162CF7C,
+ 0xA4748079, 0x931E4278, 0xCAA0047A, 0xFDCAC67B,
+ 0xB02EBC6C, 0x87447E6D, 0xDEFA386F, 0xE990FA6E,
+ 0x6C86B56B, 0x5BEC776A, 0x02523168, 0x3538F369,
+ 0x087FAF62, 0x3F156D63, 0x66AB2B61, 0x51C1E960,
+ 0xD4D7A665, 0xE3BD6464, 0xBA032266, 0x8D69E067,
+ 0x20CBD748, 0x17A11549, 0x4E1F534B, 0x7975914A,
+ 0xFC63DE4F, 0xCB091C4E, 0x92B75A4C, 0xA5DD984D,
+ 0x989AC446, 0xAFF00647, 0xF64E4045, 0xC1248244,
+ 0x4432CD41, 0x73580F40, 0x2AE64942, 0x1D8C8B43,
+ 0x5068F154, 0x67023355, 0x3EBC7557, 0x09D6B756,
+ 0x8CC0F853, 0xBBAA3A52, 0xE2147C50, 0xD57EBE51,
+ 0xE839E25A, 0xDF53205B, 0x86ED6659, 0xB187A458,
+ 0x3491EB5D, 0x03FB295C, 0x5A456F5E, 0x6D2FAD5F,
+ 0x801B35E1, 0xB771F7E0, 0xEECFB1E2, 0xD9A573E3,
+ 0x5CB33CE6, 0x6BD9FEE7, 0x3267B8E5, 0x050D7AE4,
+ 0x384A26EF, 0x0F20E4EE, 0x569EA2EC, 0x61F460ED,
+ 0xE4E22FE8, 0xD388EDE9, 0x8A36ABEB, 0xBD5C69EA,
+ 0xF0B813FD, 0xC7D2D1FC, 0x9E6C97FE, 0xA90655FF,
+ 0x2C101AFA, 0x1B7AD8FB, 0x42C49EF9, 0x75AE5CF8,
+ 0x48E900F3, 0x7F83C2F2, 0x263D84F0, 0x115746F1,
+ 0x944109F4, 0xA32BCBF5, 0xFA958DF7, 0xCDFF4FF6,
+ 0x605D78D9, 0x5737BAD8, 0x0E89FCDA, 0x39E33EDB,
+ 0xBCF571DE, 0x8B9FB3DF, 0xD221F5DD, 0xE54B37DC,
+ 0xD80C6BD7, 0xEF66A9D6, 0xB6D8EFD4, 0x81B22DD5,
+ 0x04A462D0, 0x33CEA0D1, 0x6A70E6D3, 0x5D1A24D2,
+ 0x10FE5EC5, 0x27949CC4, 0x7E2ADAC6, 0x494018C7,
+ 0xCC5657C2, 0xFB3C95C3, 0xA282D3C1, 0x95E811C0,
+ 0xA8AF4DCB, 0x9FC58FCA, 0xC67BC9C8, 0xF1110BC9,
+ 0x740744CC, 0x436D86CD, 0x1AD3C0CF, 0x2DB902CE,
+ 0x4096AF91, 0x77FC6D90, 0x2E422B92, 0x1928E993,
+ 0x9C3EA696, 0xAB546497, 0xF2EA2295, 0xC580E094,
+ 0xF8C7BC9F, 0xCFAD7E9E, 0x9613389C, 0xA179FA9D,
+ 0x246FB598, 0x13057799, 0x4ABB319B, 0x7DD1F39A,
+ 0x3035898D, 0x075F4B8C, 0x5EE10D8E, 0x698BCF8F,
+ 0xEC9D808A, 0xDBF7428B, 0x82490489, 0xB523C688,
+ 0x88649A83, 0xBF0E5882, 0xE6B01E80, 0xD1DADC81,
+ 0x54CC9384, 0x63A65185, 0x3A181787, 0x0D72D586,
+ 0xA0D0E2A9, 0x97BA20A8, 0xCE0466AA, 0xF96EA4AB,
+ 0x7C78EBAE, 0x4B1229AF, 0x12AC6FAD, 0x25C6ADAC,
+ 0x1881F1A7, 0x2FEB33A6, 0x765575A4, 0x413FB7A5,
+ 0xC429F8A0, 0xF3433AA1, 0xAAFD7CA3, 0x9D97BEA2,
+ 0xD073C4B5, 0xE71906B4, 0xBEA740B6, 0x89CD82B7,
+ 0x0CDBCDB2, 0x3BB10FB3, 0x620F49B1, 0x55658BB0,
+ 0x6822D7BB, 0x5F4815BA, 0x06F653B8, 0x319C91B9,
+ 0xB48ADEBC, 0x83E01CBD, 0xDA5E5ABF, 0xED3498BE
+ }, {
+ 0x00000000, 0x6567BCB8, 0x8BC809AA, 0xEEAFB512,
+ 0x5797628F, 0x32F0DE37, 0xDC5F6B25, 0xB938D79D,
+ 0xEF28B4C5, 0x8A4F087D, 0x64E0BD6F, 0x018701D7,
+ 0xB8BFD64A, 0xDDD86AF2, 0x3377DFE0, 0x56106358,
+ 0x9F571950, 0xFA30A5E8, 0x149F10FA, 0x71F8AC42,
+ 0xC8C07BDF, 0xADA7C767, 0x43087275, 0x266FCECD,
+ 0x707FAD95, 0x1518112D, 0xFBB7A43F, 0x9ED01887,
+ 0x27E8CF1A, 0x428F73A2, 0xAC20C6B0, 0xC9477A08,
+ 0x3EAF32A0, 0x5BC88E18, 0xB5673B0A, 0xD00087B2,
+ 0x6938502F, 0x0C5FEC97, 0xE2F05985, 0x8797E53D,
+ 0xD1878665, 0xB4E03ADD, 0x5A4F8FCF, 0x3F283377,
+ 0x8610E4EA, 0xE3775852, 0x0DD8ED40, 0x68BF51F8,
+ 0xA1F82BF0, 0xC49F9748, 0x2A30225A, 0x4F579EE2,
+ 0xF66F497F, 0x9308F5C7, 0x7DA740D5, 0x18C0FC6D,
+ 0x4ED09F35, 0x2BB7238D, 0xC518969F, 0xA07F2A27,
+ 0x1947FDBA, 0x7C204102, 0x928FF410, 0xF7E848A8,
+ 0x3D58149B, 0x583FA823, 0xB6901D31, 0xD3F7A189,
+ 0x6ACF7614, 0x0FA8CAAC, 0xE1077FBE, 0x8460C306,
+ 0xD270A05E, 0xB7171CE6, 0x59B8A9F4, 0x3CDF154C,
+ 0x85E7C2D1, 0xE0807E69, 0x0E2FCB7B, 0x6B4877C3,
+ 0xA20F0DCB, 0xC768B173, 0x29C70461, 0x4CA0B8D9,
+ 0xF5986F44, 0x90FFD3FC, 0x7E5066EE, 0x1B37DA56,
+ 0x4D27B90E, 0x284005B6, 0xC6EFB0A4, 0xA3880C1C,
+ 0x1AB0DB81, 0x7FD76739, 0x9178D22B, 0xF41F6E93,
+ 0x03F7263B, 0x66909A83, 0x883F2F91, 0xED589329,
+ 0x546044B4, 0x3107F80C, 0xDFA84D1E, 0xBACFF1A6,
+ 0xECDF92FE, 0x89B82E46, 0x67179B54, 0x027027EC,
+ 0xBB48F071, 0xDE2F4CC9, 0x3080F9DB, 0x55E74563,
+ 0x9CA03F6B, 0xF9C783D3, 0x176836C1, 0x720F8A79,
+ 0xCB375DE4, 0xAE50E15C, 0x40FF544E, 0x2598E8F6,
+ 0x73888BAE, 0x16EF3716, 0xF8408204, 0x9D273EBC,
+ 0x241FE921, 0x41785599, 0xAFD7E08B, 0xCAB05C33,
+ 0x3BB659ED, 0x5ED1E555, 0xB07E5047, 0xD519ECFF,
+ 0x6C213B62, 0x094687DA, 0xE7E932C8, 0x828E8E70,
+ 0xD49EED28, 0xB1F95190, 0x5F56E482, 0x3A31583A,
+ 0x83098FA7, 0xE66E331F, 0x08C1860D, 0x6DA63AB5,
+ 0xA4E140BD, 0xC186FC05, 0x2F294917, 0x4A4EF5AF,
+ 0xF3762232, 0x96119E8A, 0x78BE2B98, 0x1DD99720,
+ 0x4BC9F478, 0x2EAE48C0, 0xC001FDD2, 0xA566416A,
+ 0x1C5E96F7, 0x79392A4F, 0x97969F5D, 0xF2F123E5,
+ 0x05196B4D, 0x607ED7F5, 0x8ED162E7, 0xEBB6DE5F,
+ 0x528E09C2, 0x37E9B57A, 0xD9460068, 0xBC21BCD0,
+ 0xEA31DF88, 0x8F566330, 0x61F9D622, 0x049E6A9A,
+ 0xBDA6BD07, 0xD8C101BF, 0x366EB4AD, 0x53090815,
+ 0x9A4E721D, 0xFF29CEA5, 0x11867BB7, 0x74E1C70F,
+ 0xCDD91092, 0xA8BEAC2A, 0x46111938, 0x2376A580,
+ 0x7566C6D8, 0x10017A60, 0xFEAECF72, 0x9BC973CA,
+ 0x22F1A457, 0x479618EF, 0xA939ADFD, 0xCC5E1145,
+ 0x06EE4D76, 0x6389F1CE, 0x8D2644DC, 0xE841F864,
+ 0x51792FF9, 0x341E9341, 0xDAB12653, 0xBFD69AEB,
+ 0xE9C6F9B3, 0x8CA1450B, 0x620EF019, 0x07694CA1,
+ 0xBE519B3C, 0xDB362784, 0x35999296, 0x50FE2E2E,
+ 0x99B95426, 0xFCDEE89E, 0x12715D8C, 0x7716E134,
+ 0xCE2E36A9, 0xAB498A11, 0x45E63F03, 0x208183BB,
+ 0x7691E0E3, 0x13F65C5B, 0xFD59E949, 0x983E55F1,
+ 0x2106826C, 0x44613ED4, 0xAACE8BC6, 0xCFA9377E,
+ 0x38417FD6, 0x5D26C36E, 0xB389767C, 0xD6EECAC4,
+ 0x6FD61D59, 0x0AB1A1E1, 0xE41E14F3, 0x8179A84B,
+ 0xD769CB13, 0xB20E77AB, 0x5CA1C2B9, 0x39C67E01,
+ 0x80FEA99C, 0xE5991524, 0x0B36A036, 0x6E511C8E,
+ 0xA7166686, 0xC271DA3E, 0x2CDE6F2C, 0x49B9D394,
+ 0xF0810409, 0x95E6B8B1, 0x7B490DA3, 0x1E2EB11B,
+ 0x483ED243, 0x2D596EFB, 0xC3F6DBE9, 0xA6916751,
+ 0x1FA9B0CC, 0x7ACE0C74, 0x9461B966, 0xF10605DE
+ }, {
+ 0x00000000, 0xB029603D, 0x6053C07A, 0xD07AA047,
+ 0xC0A680F5, 0x708FE0C8, 0xA0F5408F, 0x10DC20B2,
+ 0xC14B7030, 0x7162100D, 0xA118B04A, 0x1131D077,
+ 0x01EDF0C5, 0xB1C490F8, 0x61BE30BF, 0xD1975082,
+ 0x8297E060, 0x32BE805D, 0xE2C4201A, 0x52ED4027,
+ 0x42316095, 0xF21800A8, 0x2262A0EF, 0x924BC0D2,
+ 0x43DC9050, 0xF3F5F06D, 0x238F502A, 0x93A63017,
+ 0x837A10A5, 0x33537098, 0xE329D0DF, 0x5300B0E2,
+ 0x042FC1C1, 0xB406A1FC, 0x647C01BB, 0xD4556186,
+ 0xC4894134, 0x74A02109, 0xA4DA814E, 0x14F3E173,
+ 0xC564B1F1, 0x754DD1CC, 0xA537718B, 0x151E11B6,
+ 0x05C23104, 0xB5EB5139, 0x6591F17E, 0xD5B89143,
+ 0x86B821A1, 0x3691419C, 0xE6EBE1DB, 0x56C281E6,
+ 0x461EA154, 0xF637C169, 0x264D612E, 0x96640113,
+ 0x47F35191, 0xF7DA31AC, 0x27A091EB, 0x9789F1D6,
+ 0x8755D164, 0x377CB159, 0xE706111E, 0x572F7123,
+ 0x4958F358, 0xF9719365, 0x290B3322, 0x9922531F,
+ 0x89FE73AD, 0x39D71390, 0xE9ADB3D7, 0x5984D3EA,
+ 0x88138368, 0x383AE355, 0xE8404312, 0x5869232F,
+ 0x48B5039D, 0xF89C63A0, 0x28E6C3E7, 0x98CFA3DA,
+ 0xCBCF1338, 0x7BE67305, 0xAB9CD342, 0x1BB5B37F,
+ 0x0B6993CD, 0xBB40F3F0, 0x6B3A53B7, 0xDB13338A,
+ 0x0A846308, 0xBAAD0335, 0x6AD7A372, 0xDAFEC34F,
+ 0xCA22E3FD, 0x7A0B83C0, 0xAA712387, 0x1A5843BA,
+ 0x4D773299, 0xFD5E52A4, 0x2D24F2E3, 0x9D0D92DE,
+ 0x8DD1B26C, 0x3DF8D251, 0xED827216, 0x5DAB122B,
+ 0x8C3C42A9, 0x3C152294, 0xEC6F82D3, 0x5C46E2EE,
+ 0x4C9AC25C, 0xFCB3A261, 0x2CC90226, 0x9CE0621B,
+ 0xCFE0D2F9, 0x7FC9B2C4, 0xAFB31283, 0x1F9A72BE,
+ 0x0F46520C, 0xBF6F3231, 0x6F159276, 0xDF3CF24B,
+ 0x0EABA2C9, 0xBE82C2F4, 0x6EF862B3, 0xDED1028E,
+ 0xCE0D223C, 0x7E244201, 0xAE5EE246, 0x1E77827B,
+ 0x92B0E6B1, 0x2299868C, 0xF2E326CB, 0x42CA46F6,
+ 0x52166644, 0xE23F0679, 0x3245A63E, 0x826CC603,
+ 0x53FB9681, 0xE3D2F6BC, 0x33A856FB, 0x838136C6,
+ 0x935D1674, 0x23747649, 0xF30ED60E, 0x4327B633,
+ 0x102706D1, 0xA00E66EC, 0x7074C6AB, 0xC05DA696,
+ 0xD0818624, 0x60A8E619, 0xB0D2465E, 0x00FB2663,
+ 0xD16C76E1, 0x614516DC, 0xB13FB69B, 0x0116D6A6,
+ 0x11CAF614, 0xA1E39629, 0x7199366E, 0xC1B05653,
+ 0x969F2770, 0x26B6474D, 0xF6CCE70A, 0x46E58737,
+ 0x5639A785, 0xE610C7B8, 0x366A67FF, 0x864307C2,
+ 0x57D45740, 0xE7FD377D, 0x3787973A, 0x87AEF707,
+ 0x9772D7B5, 0x275BB788, 0xF72117CF, 0x470877F2,
+ 0x1408C710, 0xA421A72D, 0x745B076A, 0xC4726757,
+ 0xD4AE47E5, 0x648727D8, 0xB4FD879F, 0x04D4E7A2,
+ 0xD543B720, 0x656AD71D, 0xB510775A, 0x05391767,
+ 0x15E537D5, 0xA5CC57E8, 0x75B6F7AF, 0xC59F9792,
+ 0xDBE815E9, 0x6BC175D4, 0xBBBBD593, 0x0B92B5AE,
+ 0x1B4E951C, 0xAB67F521, 0x7B1D5566, 0xCB34355B,
+ 0x1AA365D9, 0xAA8A05E4, 0x7AF0A5A3, 0xCAD9C59E,
+ 0xDA05E52C, 0x6A2C8511, 0xBA562556, 0x0A7F456B,
+ 0x597FF589, 0xE95695B4, 0x392C35F3, 0x890555CE,
+ 0x99D9757C, 0x29F01541, 0xF98AB506, 0x49A3D53B,
+ 0x983485B9, 0x281DE584, 0xF86745C3, 0x484E25FE,
+ 0x5892054C, 0xE8BB6571, 0x38C1C536, 0x88E8A50B,
+ 0xDFC7D428, 0x6FEEB415, 0xBF941452, 0x0FBD746F,
+ 0x1F6154DD, 0xAF4834E0, 0x7F3294A7, 0xCF1BF49A,
+ 0x1E8CA418, 0xAEA5C425, 0x7EDF6462, 0xCEF6045F,
+ 0xDE2A24ED, 0x6E0344D0, 0xBE79E497, 0x0E5084AA,
+ 0x5D503448, 0xED795475, 0x3D03F432, 0x8D2A940F,
+ 0x9DF6B4BD, 0x2DDFD480, 0xFDA574C7, 0x4D8C14FA,
+ 0x9C1B4478, 0x2C322445, 0xFC488402, 0x4C61E43F,
+ 0x5CBDC48D, 0xEC94A4B0, 0x3CEE04F7, 0x8CC764CA
+ }, {
+ 0x00000000, 0xA5D35CCB, 0x0BA1C84D, 0xAE729486,
+ 0x1642919B, 0xB391CD50, 0x1DE359D6, 0xB830051D,
+ 0x6D8253EC, 0xC8510F27, 0x66239BA1, 0xC3F0C76A,
+ 0x7BC0C277, 0xDE139EBC, 0x70610A3A, 0xD5B256F1,
+ 0x9B02D603, 0x3ED18AC8, 0x90A31E4E, 0x35704285,
+ 0x8D404798, 0x28931B53, 0x86E18FD5, 0x2332D31E,
+ 0xF68085EF, 0x5353D924, 0xFD214DA2, 0x58F21169,
+ 0xE0C21474, 0x451148BF, 0xEB63DC39, 0x4EB080F2,
+ 0x3605AC07, 0x93D6F0CC, 0x3DA4644A, 0x98773881,
+ 0x20473D9C, 0x85946157, 0x2BE6F5D1, 0x8E35A91A,
+ 0x5B87FFEB, 0xFE54A320, 0x502637A6, 0xF5F56B6D,
+ 0x4DC56E70, 0xE81632BB, 0x4664A63D, 0xE3B7FAF6,
+ 0xAD077A04, 0x08D426CF, 0xA6A6B249, 0x0375EE82,
+ 0xBB45EB9F, 0x1E96B754, 0xB0E423D2, 0x15377F19,
+ 0xC08529E8, 0x65567523, 0xCB24E1A5, 0x6EF7BD6E,
+ 0xD6C7B873, 0x7314E4B8, 0xDD66703E, 0x78B52CF5,
+ 0x6C0A580F, 0xC9D904C4, 0x67AB9042, 0xC278CC89,
+ 0x7A48C994, 0xDF9B955F, 0x71E901D9, 0xD43A5D12,
+ 0x01880BE3, 0xA45B5728, 0x0A29C3AE, 0xAFFA9F65,
+ 0x17CA9A78, 0xB219C6B3, 0x1C6B5235, 0xB9B80EFE,
+ 0xF7088E0C, 0x52DBD2C7, 0xFCA94641, 0x597A1A8A,
+ 0xE14A1F97, 0x4499435C, 0xEAEBD7DA, 0x4F388B11,
+ 0x9A8ADDE0, 0x3F59812B, 0x912B15AD, 0x34F84966,
+ 0x8CC84C7B, 0x291B10B0, 0x87698436, 0x22BAD8FD,
+ 0x5A0FF408, 0xFFDCA8C3, 0x51AE3C45, 0xF47D608E,
+ 0x4C4D6593, 0xE99E3958, 0x47ECADDE, 0xE23FF115,
+ 0x378DA7E4, 0x925EFB2F, 0x3C2C6FA9, 0x99FF3362,
+ 0x21CF367F, 0x841C6AB4, 0x2A6EFE32, 0x8FBDA2F9,
+ 0xC10D220B, 0x64DE7EC0, 0xCAACEA46, 0x6F7FB68D,
+ 0xD74FB390, 0x729CEF5B, 0xDCEE7BDD, 0x793D2716,
+ 0xAC8F71E7, 0x095C2D2C, 0xA72EB9AA, 0x02FDE561,
+ 0xBACDE07C, 0x1F1EBCB7, 0xB16C2831, 0x14BF74FA,
+ 0xD814B01E, 0x7DC7ECD5, 0xD3B57853, 0x76662498,
+ 0xCE562185, 0x6B857D4E, 0xC5F7E9C8, 0x6024B503,
+ 0xB596E3F2, 0x1045BF39, 0xBE372BBF, 0x1BE47774,
+ 0xA3D47269, 0x06072EA2, 0xA875BA24, 0x0DA6E6EF,
+ 0x4316661D, 0xE6C53AD6, 0x48B7AE50, 0xED64F29B,
+ 0x5554F786, 0xF087AB4D, 0x5EF53FCB, 0xFB266300,
+ 0x2E9435F1, 0x8B47693A, 0x2535FDBC, 0x80E6A177,
+ 0x38D6A46A, 0x9D05F8A1, 0x33776C27, 0x96A430EC,
+ 0xEE111C19, 0x4BC240D2, 0xE5B0D454, 0x4063889F,
+ 0xF8538D82, 0x5D80D149, 0xF3F245CF, 0x56211904,
+ 0x83934FF5, 0x2640133E, 0x883287B8, 0x2DE1DB73,
+ 0x95D1DE6E, 0x300282A5, 0x9E701623, 0x3BA34AE8,
+ 0x7513CA1A, 0xD0C096D1, 0x7EB20257, 0xDB615E9C,
+ 0x63515B81, 0xC682074A, 0x68F093CC, 0xCD23CF07,
+ 0x189199F6, 0xBD42C53D, 0x133051BB, 0xB6E30D70,
+ 0x0ED3086D, 0xAB0054A6, 0x0572C020, 0xA0A19CEB,
+ 0xB41EE811, 0x11CDB4DA, 0xBFBF205C, 0x1A6C7C97,
+ 0xA25C798A, 0x078F2541, 0xA9FDB1C7, 0x0C2EED0C,
+ 0xD99CBBFD, 0x7C4FE736, 0xD23D73B0, 0x77EE2F7B,
+ 0xCFDE2A66, 0x6A0D76AD, 0xC47FE22B, 0x61ACBEE0,
+ 0x2F1C3E12, 0x8ACF62D9, 0x24BDF65F, 0x816EAA94,
+ 0x395EAF89, 0x9C8DF342, 0x32FF67C4, 0x972C3B0F,
+ 0x429E6DFE, 0xE74D3135, 0x493FA5B3, 0xECECF978,
+ 0x54DCFC65, 0xF10FA0AE, 0x5F7D3428, 0xFAAE68E3,
+ 0x821B4416, 0x27C818DD, 0x89BA8C5B, 0x2C69D090,
+ 0x9459D58D, 0x318A8946, 0x9FF81DC0, 0x3A2B410B,
+ 0xEF9917FA, 0x4A4A4B31, 0xE438DFB7, 0x41EB837C,
+ 0xF9DB8661, 0x5C08DAAA, 0xF27A4E2C, 0x57A912E7,
+ 0x19199215, 0xBCCACEDE, 0x12B85A58, 0xB76B0693,
+ 0x0F5B038E, 0xAA885F45, 0x04FACBC3, 0xA1299708,
+ 0x749BC1F9, 0xD1489D32, 0x7F3A09B4, 0xDAE9557F,
+ 0x62D95062, 0xC70A0CA9, 0x6978982F, 0xCCABC4E4
+ }, {
+ 0x00000000, 0xB40B77A6, 0x29119F97, 0x9D1AE831,
+ 0x13244FF4, 0xA72F3852, 0x3A35D063, 0x8E3EA7C5,
+ 0x674EEF33, 0xD3459895, 0x4E5F70A4, 0xFA540702,
+ 0x746AA0C7, 0xC061D761, 0x5D7B3F50, 0xE97048F6,
+ 0xCE9CDE67, 0x7A97A9C1, 0xE78D41F0, 0x53863656,
+ 0xDDB89193, 0x69B3E635, 0xF4A90E04, 0x40A279A2,
+ 0xA9D23154, 0x1DD946F2, 0x80C3AEC3, 0x34C8D965,
+ 0xBAF67EA0, 0x0EFD0906, 0x93E7E137, 0x27EC9691,
+ 0x9C39BDCF, 0x2832CA69, 0xB5282258, 0x012355FE,
+ 0x8F1DF23B, 0x3B16859D, 0xA60C6DAC, 0x12071A0A,
+ 0xFB7752FC, 0x4F7C255A, 0xD266CD6B, 0x666DBACD,
+ 0xE8531D08, 0x5C586AAE, 0xC142829F, 0x7549F539,
+ 0x52A563A8, 0xE6AE140E, 0x7BB4FC3F, 0xCFBF8B99,
+ 0x41812C5C, 0xF58A5BFA, 0x6890B3CB, 0xDC9BC46D,
+ 0x35EB8C9B, 0x81E0FB3D, 0x1CFA130C, 0xA8F164AA,
+ 0x26CFC36F, 0x92C4B4C9, 0x0FDE5CF8, 0xBBD52B5E,
+ 0x79750B44, 0xCD7E7CE2, 0x506494D3, 0xE46FE375,
+ 0x6A5144B0, 0xDE5A3316, 0x4340DB27, 0xF74BAC81,
+ 0x1E3BE477, 0xAA3093D1, 0x372A7BE0, 0x83210C46,
+ 0x0D1FAB83, 0xB914DC25, 0x240E3414, 0x900543B2,
+ 0xB7E9D523, 0x03E2A285, 0x9EF84AB4, 0x2AF33D12,
+ 0xA4CD9AD7, 0x10C6ED71, 0x8DDC0540, 0x39D772E6,
+ 0xD0A73A10, 0x64AC4DB6, 0xF9B6A587, 0x4DBDD221,
+ 0xC38375E4, 0x77880242, 0xEA92EA73, 0x5E999DD5,
+ 0xE54CB68B, 0x5147C12D, 0xCC5D291C, 0x78565EBA,
+ 0xF668F97F, 0x42638ED9, 0xDF7966E8, 0x6B72114E,
+ 0x820259B8, 0x36092E1E, 0xAB13C62F, 0x1F18B189,
+ 0x9126164C, 0x252D61EA, 0xB83789DB, 0x0C3CFE7D,
+ 0x2BD068EC, 0x9FDB1F4A, 0x02C1F77B, 0xB6CA80DD,
+ 0x38F42718, 0x8CFF50BE, 0x11E5B88F, 0xA5EECF29,
+ 0x4C9E87DF, 0xF895F079, 0x658F1848, 0xD1846FEE,
+ 0x5FBAC82B, 0xEBB1BF8D, 0x76AB57BC, 0xC2A0201A,
+ 0xF2EA1688, 0x46E1612E, 0xDBFB891F, 0x6FF0FEB9,
+ 0xE1CE597C, 0x55C52EDA, 0xC8DFC6EB, 0x7CD4B14D,
+ 0x95A4F9BB, 0x21AF8E1D, 0xBCB5662C, 0x08BE118A,
+ 0x8680B64F, 0x328BC1E9, 0xAF9129D8, 0x1B9A5E7E,
+ 0x3C76C8EF, 0x887DBF49, 0x15675778, 0xA16C20DE,
+ 0x2F52871B, 0x9B59F0BD, 0x0643188C, 0xB2486F2A,
+ 0x5B3827DC, 0xEF33507A, 0x7229B84B, 0xC622CFED,
+ 0x481C6828, 0xFC171F8E, 0x610DF7BF, 0xD5068019,
+ 0x6ED3AB47, 0xDAD8DCE1, 0x47C234D0, 0xF3C94376,
+ 0x7DF7E4B3, 0xC9FC9315, 0x54E67B24, 0xE0ED0C82,
+ 0x099D4474, 0xBD9633D2, 0x208CDBE3, 0x9487AC45,
+ 0x1AB90B80, 0xAEB27C26, 0x33A89417, 0x87A3E3B1,
+ 0xA04F7520, 0x14440286, 0x895EEAB7, 0x3D559D11,
+ 0xB36B3AD4, 0x07604D72, 0x9A7AA543, 0x2E71D2E5,
+ 0xC7019A13, 0x730AEDB5, 0xEE100584, 0x5A1B7222,
+ 0xD425D5E7, 0x602EA241, 0xFD344A70, 0x493F3DD6,
+ 0x8B9F1DCC, 0x3F946A6A, 0xA28E825B, 0x1685F5FD,
+ 0x98BB5238, 0x2CB0259E, 0xB1AACDAF, 0x05A1BA09,
+ 0xECD1F2FF, 0x58DA8559, 0xC5C06D68, 0x71CB1ACE,
+ 0xFFF5BD0B, 0x4BFECAAD, 0xD6E4229C, 0x62EF553A,
+ 0x4503C3AB, 0xF108B40D, 0x6C125C3C, 0xD8192B9A,
+ 0x56278C5F, 0xE22CFBF9, 0x7F3613C8, 0xCB3D646E,
+ 0x224D2C98, 0x96465B3E, 0x0B5CB30F, 0xBF57C4A9,
+ 0x3169636C, 0x856214CA, 0x1878FCFB, 0xAC738B5D,
+ 0x17A6A003, 0xA3ADD7A5, 0x3EB73F94, 0x8ABC4832,
+ 0x0482EFF7, 0xB0899851, 0x2D937060, 0x999807C6,
+ 0x70E84F30, 0xC4E33896, 0x59F9D0A7, 0xEDF2A701,
+ 0x63CC00C4, 0xD7C77762, 0x4ADD9F53, 0xFED6E8F5,
+ 0xD93A7E64, 0x6D3109C2, 0xF02BE1F3, 0x44209655,
+ 0xCA1E3190, 0x7E154636, 0xE30FAE07, 0x5704D9A1,
+ 0xBE749157, 0x0A7FE6F1, 0x97650EC0, 0x236E7966,
+ 0xAD50DEA3, 0x195BA905, 0x84414134, 0x304A3692
+ }, {
+ 0x00000000, 0x9E00AACC, 0x7D072542, 0xE3078F8E,
+ 0xFA0E4A84, 0x640EE048, 0x87096FC6, 0x1909C50A,
+ 0xB51BE5D3, 0x2B1B4F1F, 0xC81CC091, 0x561C6A5D,
+ 0x4F15AF57, 0xD115059B, 0x32128A15, 0xAC1220D9,
+ 0x2B31BB7C, 0xB53111B0, 0x56369E3E, 0xC83634F2,
+ 0xD13FF1F8, 0x4F3F5B34, 0xAC38D4BA, 0x32387E76,
+ 0x9E2A5EAF, 0x002AF463, 0xE32D7BED, 0x7D2DD121,
+ 0x6424142B, 0xFA24BEE7, 0x19233169, 0x87239BA5,
+ 0x566276F9, 0xC862DC35, 0x2B6553BB, 0xB565F977,
+ 0xAC6C3C7D, 0x326C96B1, 0xD16B193F, 0x4F6BB3F3,
+ 0xE379932A, 0x7D7939E6, 0x9E7EB668, 0x007E1CA4,
+ 0x1977D9AE, 0x87777362, 0x6470FCEC, 0xFA705620,
+ 0x7D53CD85, 0xE3536749, 0x0054E8C7, 0x9E54420B,
+ 0x875D8701, 0x195D2DCD, 0xFA5AA243, 0x645A088F,
+ 0xC8482856, 0x5648829A, 0xB54F0D14, 0x2B4FA7D8,
+ 0x324662D2, 0xAC46C81E, 0x4F414790, 0xD141ED5C,
+ 0xEDC29D29, 0x73C237E5, 0x90C5B86B, 0x0EC512A7,
+ 0x17CCD7AD, 0x89CC7D61, 0x6ACBF2EF, 0xF4CB5823,
+ 0x58D978FA, 0xC6D9D236, 0x25DE5DB8, 0xBBDEF774,
+ 0xA2D7327E, 0x3CD798B2, 0xDFD0173C, 0x41D0BDF0,
+ 0xC6F32655, 0x58F38C99, 0xBBF40317, 0x25F4A9DB,
+ 0x3CFD6CD1, 0xA2FDC61D, 0x41FA4993, 0xDFFAE35F,
+ 0x73E8C386, 0xEDE8694A, 0x0EEFE6C4, 0x90EF4C08,
+ 0x89E68902, 0x17E623CE, 0xF4E1AC40, 0x6AE1068C,
+ 0xBBA0EBD0, 0x25A0411C, 0xC6A7CE92, 0x58A7645E,
+ 0x41AEA154, 0xDFAE0B98, 0x3CA98416, 0xA2A92EDA,
+ 0x0EBB0E03, 0x90BBA4CF, 0x73BC2B41, 0xEDBC818D,
+ 0xF4B54487, 0x6AB5EE4B, 0x89B261C5, 0x17B2CB09,
+ 0x909150AC, 0x0E91FA60, 0xED9675EE, 0x7396DF22,
+ 0x6A9F1A28, 0xF49FB0E4, 0x17983F6A, 0x899895A6,
+ 0x258AB57F, 0xBB8A1FB3, 0x588D903D, 0xC68D3AF1,
+ 0xDF84FFFB, 0x41845537, 0xA283DAB9, 0x3C837075,
+ 0xDA853B53, 0x4485919F, 0xA7821E11, 0x3982B4DD,
+ 0x208B71D7, 0xBE8BDB1B, 0x5D8C5495, 0xC38CFE59,
+ 0x6F9EDE80, 0xF19E744C, 0x1299FBC2, 0x8C99510E,
+ 0x95909404, 0x0B903EC8, 0xE897B146, 0x76971B8A,
+ 0xF1B4802F, 0x6FB42AE3, 0x8CB3A56D, 0x12B30FA1,
+ 0x0BBACAAB, 0x95BA6067, 0x76BDEFE9, 0xE8BD4525,
+ 0x44AF65FC, 0xDAAFCF30, 0x39A840BE, 0xA7A8EA72,
+ 0xBEA12F78, 0x20A185B4, 0xC3A60A3A, 0x5DA6A0F6,
+ 0x8CE74DAA, 0x12E7E766, 0xF1E068E8, 0x6FE0C224,
+ 0x76E9072E, 0xE8E9ADE2, 0x0BEE226C, 0x95EE88A0,
+ 0x39FCA879, 0xA7FC02B5, 0x44FB8D3B, 0xDAFB27F7,
+ 0xC3F2E2FD, 0x5DF24831, 0xBEF5C7BF, 0x20F56D73,
+ 0xA7D6F6D6, 0x39D65C1A, 0xDAD1D394, 0x44D17958,
+ 0x5DD8BC52, 0xC3D8169E, 0x20DF9910, 0xBEDF33DC,
+ 0x12CD1305, 0x8CCDB9C9, 0x6FCA3647, 0xF1CA9C8B,
+ 0xE8C35981, 0x76C3F34D, 0x95C47CC3, 0x0BC4D60F,
+ 0x3747A67A, 0xA9470CB6, 0x4A408338, 0xD44029F4,
+ 0xCD49ECFE, 0x53494632, 0xB04EC9BC, 0x2E4E6370,
+ 0x825C43A9, 0x1C5CE965, 0xFF5B66EB, 0x615BCC27,
+ 0x7852092D, 0xE652A3E1, 0x05552C6F, 0x9B5586A3,
+ 0x1C761D06, 0x8276B7CA, 0x61713844, 0xFF719288,
+ 0xE6785782, 0x7878FD4E, 0x9B7F72C0, 0x057FD80C,
+ 0xA96DF8D5, 0x376D5219, 0xD46ADD97, 0x4A6A775B,
+ 0x5363B251, 0xCD63189D, 0x2E649713, 0xB0643DDF,
+ 0x6125D083, 0xFF257A4F, 0x1C22F5C1, 0x82225F0D,
+ 0x9B2B9A07, 0x052B30CB, 0xE62CBF45, 0x782C1589,
+ 0xD43E3550, 0x4A3E9F9C, 0xA9391012, 0x3739BADE,
+ 0x2E307FD4, 0xB030D518, 0x53375A96, 0xCD37F05A,
+ 0x4A146BFF, 0xD414C133, 0x37134EBD, 0xA913E471,
+ 0xB01A217B, 0x2E1A8BB7, 0xCD1D0439, 0x531DAEF5,
+ 0xFF0F8E2C, 0x610F24E0, 0x8208AB6E, 0x1C0801A2,
+ 0x0501C4A8, 0x9B016E64, 0x7806E1EA, 0xE6064B26
+ }
+};
diff --git a/src/liblzma/check/crc32_table_le.h b/src/liblzma/check/crc32_table_le.h
new file mode 100644
index 0000000..a96d772
--- /dev/null
+++ b/src/liblzma/check/crc32_table_le.h
@@ -0,0 +1,527 @@
+/* This file has been automatically generated by crc32_tablegen.c. */
+
+#include <inttypes.h>
+
+const uint32_t lzma_crc32_table[8][256] = {
+ {
+ 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,
+ 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,
+ 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,
+ 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,
+ 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,
+ 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,
+ 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,
+ 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,
+ 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,
+ 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,
+ 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,
+ 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,
+ 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,
+ 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,
+ 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,
+ 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,
+ 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,
+ 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,
+ 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,
+ 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,
+ 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,
+ 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,
+ 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,
+ 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,
+ 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,
+ 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,
+ 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,
+ 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,
+ 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,
+ 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,
+ 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,
+ 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,
+ 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,
+ 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,
+ 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
+ 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,
+ 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,
+ 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,
+ 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,
+ 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,
+ 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,
+ 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,
+ 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,
+ 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,
+ 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,
+ 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,
+ 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,
+ 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,
+ 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,
+ 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
+ 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,
+ 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,
+ 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,
+ 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,
+ 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,
+ 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,
+ 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,
+ 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,
+ 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,
+ 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,
+ 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,
+ 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,
+ 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,
+ 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D
+ }, {
+ 0x00000000, 0x191B3141, 0x32366282, 0x2B2D53C3,
+ 0x646CC504, 0x7D77F445, 0x565AA786, 0x4F4196C7,
+ 0xC8D98A08, 0xD1C2BB49, 0xFAEFE88A, 0xE3F4D9CB,
+ 0xACB54F0C, 0xB5AE7E4D, 0x9E832D8E, 0x87981CCF,
+ 0x4AC21251, 0x53D92310, 0x78F470D3, 0x61EF4192,
+ 0x2EAED755, 0x37B5E614, 0x1C98B5D7, 0x05838496,
+ 0x821B9859, 0x9B00A918, 0xB02DFADB, 0xA936CB9A,
+ 0xE6775D5D, 0xFF6C6C1C, 0xD4413FDF, 0xCD5A0E9E,
+ 0x958424A2, 0x8C9F15E3, 0xA7B24620, 0xBEA97761,
+ 0xF1E8E1A6, 0xE8F3D0E7, 0xC3DE8324, 0xDAC5B265,
+ 0x5D5DAEAA, 0x44469FEB, 0x6F6BCC28, 0x7670FD69,
+ 0x39316BAE, 0x202A5AEF, 0x0B07092C, 0x121C386D,
+ 0xDF4636F3, 0xC65D07B2, 0xED705471, 0xF46B6530,
+ 0xBB2AF3F7, 0xA231C2B6, 0x891C9175, 0x9007A034,
+ 0x179FBCFB, 0x0E848DBA, 0x25A9DE79, 0x3CB2EF38,
+ 0x73F379FF, 0x6AE848BE, 0x41C51B7D, 0x58DE2A3C,
+ 0xF0794F05, 0xE9627E44, 0xC24F2D87, 0xDB541CC6,
+ 0x94158A01, 0x8D0EBB40, 0xA623E883, 0xBF38D9C2,
+ 0x38A0C50D, 0x21BBF44C, 0x0A96A78F, 0x138D96CE,
+ 0x5CCC0009, 0x45D73148, 0x6EFA628B, 0x77E153CA,
+ 0xBABB5D54, 0xA3A06C15, 0x888D3FD6, 0x91960E97,
+ 0xDED79850, 0xC7CCA911, 0xECE1FAD2, 0xF5FACB93,
+ 0x7262D75C, 0x6B79E61D, 0x4054B5DE, 0x594F849F,
+ 0x160E1258, 0x0F152319, 0x243870DA, 0x3D23419B,
+ 0x65FD6BA7, 0x7CE65AE6, 0x57CB0925, 0x4ED03864,
+ 0x0191AEA3, 0x188A9FE2, 0x33A7CC21, 0x2ABCFD60,
+ 0xAD24E1AF, 0xB43FD0EE, 0x9F12832D, 0x8609B26C,
+ 0xC94824AB, 0xD05315EA, 0xFB7E4629, 0xE2657768,
+ 0x2F3F79F6, 0x362448B7, 0x1D091B74, 0x04122A35,
+ 0x4B53BCF2, 0x52488DB3, 0x7965DE70, 0x607EEF31,
+ 0xE7E6F3FE, 0xFEFDC2BF, 0xD5D0917C, 0xCCCBA03D,
+ 0x838A36FA, 0x9A9107BB, 0xB1BC5478, 0xA8A76539,
+ 0x3B83984B, 0x2298A90A, 0x09B5FAC9, 0x10AECB88,
+ 0x5FEF5D4F, 0x46F46C0E, 0x6DD93FCD, 0x74C20E8C,
+ 0xF35A1243, 0xEA412302, 0xC16C70C1, 0xD8774180,
+ 0x9736D747, 0x8E2DE606, 0xA500B5C5, 0xBC1B8484,
+ 0x71418A1A, 0x685ABB5B, 0x4377E898, 0x5A6CD9D9,
+ 0x152D4F1E, 0x0C367E5F, 0x271B2D9C, 0x3E001CDD,
+ 0xB9980012, 0xA0833153, 0x8BAE6290, 0x92B553D1,
+ 0xDDF4C516, 0xC4EFF457, 0xEFC2A794, 0xF6D996D5,
+ 0xAE07BCE9, 0xB71C8DA8, 0x9C31DE6B, 0x852AEF2A,
+ 0xCA6B79ED, 0xD37048AC, 0xF85D1B6F, 0xE1462A2E,
+ 0x66DE36E1, 0x7FC507A0, 0x54E85463, 0x4DF36522,
+ 0x02B2F3E5, 0x1BA9C2A4, 0x30849167, 0x299FA026,
+ 0xE4C5AEB8, 0xFDDE9FF9, 0xD6F3CC3A, 0xCFE8FD7B,
+ 0x80A96BBC, 0x99B25AFD, 0xB29F093E, 0xAB84387F,
+ 0x2C1C24B0, 0x350715F1, 0x1E2A4632, 0x07317773,
+ 0x4870E1B4, 0x516BD0F5, 0x7A468336, 0x635DB277,
+ 0xCBFAD74E, 0xD2E1E60F, 0xF9CCB5CC, 0xE0D7848D,
+ 0xAF96124A, 0xB68D230B, 0x9DA070C8, 0x84BB4189,
+ 0x03235D46, 0x1A386C07, 0x31153FC4, 0x280E0E85,
+ 0x674F9842, 0x7E54A903, 0x5579FAC0, 0x4C62CB81,
+ 0x8138C51F, 0x9823F45E, 0xB30EA79D, 0xAA1596DC,
+ 0xE554001B, 0xFC4F315A, 0xD7626299, 0xCE7953D8,
+ 0x49E14F17, 0x50FA7E56, 0x7BD72D95, 0x62CC1CD4,
+ 0x2D8D8A13, 0x3496BB52, 0x1FBBE891, 0x06A0D9D0,
+ 0x5E7EF3EC, 0x4765C2AD, 0x6C48916E, 0x7553A02F,
+ 0x3A1236E8, 0x230907A9, 0x0824546A, 0x113F652B,
+ 0x96A779E4, 0x8FBC48A5, 0xA4911B66, 0xBD8A2A27,
+ 0xF2CBBCE0, 0xEBD08DA1, 0xC0FDDE62, 0xD9E6EF23,
+ 0x14BCE1BD, 0x0DA7D0FC, 0x268A833F, 0x3F91B27E,
+ 0x70D024B9, 0x69CB15F8, 0x42E6463B, 0x5BFD777A,
+ 0xDC656BB5, 0xC57E5AF4, 0xEE530937, 0xF7483876,
+ 0xB809AEB1, 0xA1129FF0, 0x8A3FCC33, 0x9324FD72
+ }, {
+ 0x00000000, 0x01C26A37, 0x0384D46E, 0x0246BE59,
+ 0x0709A8DC, 0x06CBC2EB, 0x048D7CB2, 0x054F1685,
+ 0x0E1351B8, 0x0FD13B8F, 0x0D9785D6, 0x0C55EFE1,
+ 0x091AF964, 0x08D89353, 0x0A9E2D0A, 0x0B5C473D,
+ 0x1C26A370, 0x1DE4C947, 0x1FA2771E, 0x1E601D29,
+ 0x1B2F0BAC, 0x1AED619B, 0x18ABDFC2, 0x1969B5F5,
+ 0x1235F2C8, 0x13F798FF, 0x11B126A6, 0x10734C91,
+ 0x153C5A14, 0x14FE3023, 0x16B88E7A, 0x177AE44D,
+ 0x384D46E0, 0x398F2CD7, 0x3BC9928E, 0x3A0BF8B9,
+ 0x3F44EE3C, 0x3E86840B, 0x3CC03A52, 0x3D025065,
+ 0x365E1758, 0x379C7D6F, 0x35DAC336, 0x3418A901,
+ 0x3157BF84, 0x3095D5B3, 0x32D36BEA, 0x331101DD,
+ 0x246BE590, 0x25A98FA7, 0x27EF31FE, 0x262D5BC9,
+ 0x23624D4C, 0x22A0277B, 0x20E69922, 0x2124F315,
+ 0x2A78B428, 0x2BBADE1F, 0x29FC6046, 0x283E0A71,
+ 0x2D711CF4, 0x2CB376C3, 0x2EF5C89A, 0x2F37A2AD,
+ 0x709A8DC0, 0x7158E7F7, 0x731E59AE, 0x72DC3399,
+ 0x7793251C, 0x76514F2B, 0x7417F172, 0x75D59B45,
+ 0x7E89DC78, 0x7F4BB64F, 0x7D0D0816, 0x7CCF6221,
+ 0x798074A4, 0x78421E93, 0x7A04A0CA, 0x7BC6CAFD,
+ 0x6CBC2EB0, 0x6D7E4487, 0x6F38FADE, 0x6EFA90E9,
+ 0x6BB5866C, 0x6A77EC5B, 0x68315202, 0x69F33835,
+ 0x62AF7F08, 0x636D153F, 0x612BAB66, 0x60E9C151,
+ 0x65A6D7D4, 0x6464BDE3, 0x662203BA, 0x67E0698D,
+ 0x48D7CB20, 0x4915A117, 0x4B531F4E, 0x4A917579,
+ 0x4FDE63FC, 0x4E1C09CB, 0x4C5AB792, 0x4D98DDA5,
+ 0x46C49A98, 0x4706F0AF, 0x45404EF6, 0x448224C1,
+ 0x41CD3244, 0x400F5873, 0x4249E62A, 0x438B8C1D,
+ 0x54F16850, 0x55330267, 0x5775BC3E, 0x56B7D609,
+ 0x53F8C08C, 0x523AAABB, 0x507C14E2, 0x51BE7ED5,
+ 0x5AE239E8, 0x5B2053DF, 0x5966ED86, 0x58A487B1,
+ 0x5DEB9134, 0x5C29FB03, 0x5E6F455A, 0x5FAD2F6D,
+ 0xE1351B80, 0xE0F771B7, 0xE2B1CFEE, 0xE373A5D9,
+ 0xE63CB35C, 0xE7FED96B, 0xE5B86732, 0xE47A0D05,
+ 0xEF264A38, 0xEEE4200F, 0xECA29E56, 0xED60F461,
+ 0xE82FE2E4, 0xE9ED88D3, 0xEBAB368A, 0xEA695CBD,
+ 0xFD13B8F0, 0xFCD1D2C7, 0xFE976C9E, 0xFF5506A9,
+ 0xFA1A102C, 0xFBD87A1B, 0xF99EC442, 0xF85CAE75,
+ 0xF300E948, 0xF2C2837F, 0xF0843D26, 0xF1465711,
+ 0xF4094194, 0xF5CB2BA3, 0xF78D95FA, 0xF64FFFCD,
+ 0xD9785D60, 0xD8BA3757, 0xDAFC890E, 0xDB3EE339,
+ 0xDE71F5BC, 0xDFB39F8B, 0xDDF521D2, 0xDC374BE5,
+ 0xD76B0CD8, 0xD6A966EF, 0xD4EFD8B6, 0xD52DB281,
+ 0xD062A404, 0xD1A0CE33, 0xD3E6706A, 0xD2241A5D,
+ 0xC55EFE10, 0xC49C9427, 0xC6DA2A7E, 0xC7184049,
+ 0xC25756CC, 0xC3953CFB, 0xC1D382A2, 0xC011E895,
+ 0xCB4DAFA8, 0xCA8FC59F, 0xC8C97BC6, 0xC90B11F1,
+ 0xCC440774, 0xCD866D43, 0xCFC0D31A, 0xCE02B92D,
+ 0x91AF9640, 0x906DFC77, 0x922B422E, 0x93E92819,
+ 0x96A63E9C, 0x976454AB, 0x9522EAF2, 0x94E080C5,
+ 0x9FBCC7F8, 0x9E7EADCF, 0x9C381396, 0x9DFA79A1,
+ 0x98B56F24, 0x99770513, 0x9B31BB4A, 0x9AF3D17D,
+ 0x8D893530, 0x8C4B5F07, 0x8E0DE15E, 0x8FCF8B69,
+ 0x8A809DEC, 0x8B42F7DB, 0x89044982, 0x88C623B5,
+ 0x839A6488, 0x82580EBF, 0x801EB0E6, 0x81DCDAD1,
+ 0x8493CC54, 0x8551A663, 0x8717183A, 0x86D5720D,
+ 0xA9E2D0A0, 0xA820BA97, 0xAA6604CE, 0xABA46EF9,
+ 0xAEEB787C, 0xAF29124B, 0xAD6FAC12, 0xACADC625,
+ 0xA7F18118, 0xA633EB2F, 0xA4755576, 0xA5B73F41,
+ 0xA0F829C4, 0xA13A43F3, 0xA37CFDAA, 0xA2BE979D,
+ 0xB5C473D0, 0xB40619E7, 0xB640A7BE, 0xB782CD89,
+ 0xB2CDDB0C, 0xB30FB13B, 0xB1490F62, 0xB08B6555,
+ 0xBBD72268, 0xBA15485F, 0xB853F606, 0xB9919C31,
+ 0xBCDE8AB4, 0xBD1CE083, 0xBF5A5EDA, 0xBE9834ED
+ }, {
+ 0x00000000, 0xB8BC6765, 0xAA09C88B, 0x12B5AFEE,
+ 0x8F629757, 0x37DEF032, 0x256B5FDC, 0x9DD738B9,
+ 0xC5B428EF, 0x7D084F8A, 0x6FBDE064, 0xD7018701,
+ 0x4AD6BFB8, 0xF26AD8DD, 0xE0DF7733, 0x58631056,
+ 0x5019579F, 0xE8A530FA, 0xFA109F14, 0x42ACF871,
+ 0xDF7BC0C8, 0x67C7A7AD, 0x75720843, 0xCDCE6F26,
+ 0x95AD7F70, 0x2D111815, 0x3FA4B7FB, 0x8718D09E,
+ 0x1ACFE827, 0xA2738F42, 0xB0C620AC, 0x087A47C9,
+ 0xA032AF3E, 0x188EC85B, 0x0A3B67B5, 0xB28700D0,
+ 0x2F503869, 0x97EC5F0C, 0x8559F0E2, 0x3DE59787,
+ 0x658687D1, 0xDD3AE0B4, 0xCF8F4F5A, 0x7733283F,
+ 0xEAE41086, 0x525877E3, 0x40EDD80D, 0xF851BF68,
+ 0xF02BF8A1, 0x48979FC4, 0x5A22302A, 0xE29E574F,
+ 0x7F496FF6, 0xC7F50893, 0xD540A77D, 0x6DFCC018,
+ 0x359FD04E, 0x8D23B72B, 0x9F9618C5, 0x272A7FA0,
+ 0xBAFD4719, 0x0241207C, 0x10F48F92, 0xA848E8F7,
+ 0x9B14583D, 0x23A83F58, 0x311D90B6, 0x89A1F7D3,
+ 0x1476CF6A, 0xACCAA80F, 0xBE7F07E1, 0x06C36084,
+ 0x5EA070D2, 0xE61C17B7, 0xF4A9B859, 0x4C15DF3C,
+ 0xD1C2E785, 0x697E80E0, 0x7BCB2F0E, 0xC377486B,
+ 0xCB0D0FA2, 0x73B168C7, 0x6104C729, 0xD9B8A04C,
+ 0x446F98F5, 0xFCD3FF90, 0xEE66507E, 0x56DA371B,
+ 0x0EB9274D, 0xB6054028, 0xA4B0EFC6, 0x1C0C88A3,
+ 0x81DBB01A, 0x3967D77F, 0x2BD27891, 0x936E1FF4,
+ 0x3B26F703, 0x839A9066, 0x912F3F88, 0x299358ED,
+ 0xB4446054, 0x0CF80731, 0x1E4DA8DF, 0xA6F1CFBA,
+ 0xFE92DFEC, 0x462EB889, 0x549B1767, 0xEC277002,
+ 0x71F048BB, 0xC94C2FDE, 0xDBF98030, 0x6345E755,
+ 0x6B3FA09C, 0xD383C7F9, 0xC1366817, 0x798A0F72,
+ 0xE45D37CB, 0x5CE150AE, 0x4E54FF40, 0xF6E89825,
+ 0xAE8B8873, 0x1637EF16, 0x048240F8, 0xBC3E279D,
+ 0x21E91F24, 0x99557841, 0x8BE0D7AF, 0x335CB0CA,
+ 0xED59B63B, 0x55E5D15E, 0x47507EB0, 0xFFEC19D5,
+ 0x623B216C, 0xDA874609, 0xC832E9E7, 0x708E8E82,
+ 0x28ED9ED4, 0x9051F9B1, 0x82E4565F, 0x3A58313A,
+ 0xA78F0983, 0x1F336EE6, 0x0D86C108, 0xB53AA66D,
+ 0xBD40E1A4, 0x05FC86C1, 0x1749292F, 0xAFF54E4A,
+ 0x322276F3, 0x8A9E1196, 0x982BBE78, 0x2097D91D,
+ 0x78F4C94B, 0xC048AE2E, 0xD2FD01C0, 0x6A4166A5,
+ 0xF7965E1C, 0x4F2A3979, 0x5D9F9697, 0xE523F1F2,
+ 0x4D6B1905, 0xF5D77E60, 0xE762D18E, 0x5FDEB6EB,
+ 0xC2098E52, 0x7AB5E937, 0x680046D9, 0xD0BC21BC,
+ 0x88DF31EA, 0x3063568F, 0x22D6F961, 0x9A6A9E04,
+ 0x07BDA6BD, 0xBF01C1D8, 0xADB46E36, 0x15080953,
+ 0x1D724E9A, 0xA5CE29FF, 0xB77B8611, 0x0FC7E174,
+ 0x9210D9CD, 0x2AACBEA8, 0x38191146, 0x80A57623,
+ 0xD8C66675, 0x607A0110, 0x72CFAEFE, 0xCA73C99B,
+ 0x57A4F122, 0xEF189647, 0xFDAD39A9, 0x45115ECC,
+ 0x764DEE06, 0xCEF18963, 0xDC44268D, 0x64F841E8,
+ 0xF92F7951, 0x41931E34, 0x5326B1DA, 0xEB9AD6BF,
+ 0xB3F9C6E9, 0x0B45A18C, 0x19F00E62, 0xA14C6907,
+ 0x3C9B51BE, 0x842736DB, 0x96929935, 0x2E2EFE50,
+ 0x2654B999, 0x9EE8DEFC, 0x8C5D7112, 0x34E11677,
+ 0xA9362ECE, 0x118A49AB, 0x033FE645, 0xBB838120,
+ 0xE3E09176, 0x5B5CF613, 0x49E959FD, 0xF1553E98,
+ 0x6C820621, 0xD43E6144, 0xC68BCEAA, 0x7E37A9CF,
+ 0xD67F4138, 0x6EC3265D, 0x7C7689B3, 0xC4CAEED6,
+ 0x591DD66F, 0xE1A1B10A, 0xF3141EE4, 0x4BA87981,
+ 0x13CB69D7, 0xAB770EB2, 0xB9C2A15C, 0x017EC639,
+ 0x9CA9FE80, 0x241599E5, 0x36A0360B, 0x8E1C516E,
+ 0x866616A7, 0x3EDA71C2, 0x2C6FDE2C, 0x94D3B949,
+ 0x090481F0, 0xB1B8E695, 0xA30D497B, 0x1BB12E1E,
+ 0x43D23E48, 0xFB6E592D, 0xE9DBF6C3, 0x516791A6,
+ 0xCCB0A91F, 0x740CCE7A, 0x66B96194, 0xDE0506F1
+ }, {
+ 0x00000000, 0x3D6029B0, 0x7AC05360, 0x47A07AD0,
+ 0xF580A6C0, 0xC8E08F70, 0x8F40F5A0, 0xB220DC10,
+ 0x30704BC1, 0x0D106271, 0x4AB018A1, 0x77D03111,
+ 0xC5F0ED01, 0xF890C4B1, 0xBF30BE61, 0x825097D1,
+ 0x60E09782, 0x5D80BE32, 0x1A20C4E2, 0x2740ED52,
+ 0x95603142, 0xA80018F2, 0xEFA06222, 0xD2C04B92,
+ 0x5090DC43, 0x6DF0F5F3, 0x2A508F23, 0x1730A693,
+ 0xA5107A83, 0x98705333, 0xDFD029E3, 0xE2B00053,
+ 0xC1C12F04, 0xFCA106B4, 0xBB017C64, 0x866155D4,
+ 0x344189C4, 0x0921A074, 0x4E81DAA4, 0x73E1F314,
+ 0xF1B164C5, 0xCCD14D75, 0x8B7137A5, 0xB6111E15,
+ 0x0431C205, 0x3951EBB5, 0x7EF19165, 0x4391B8D5,
+ 0xA121B886, 0x9C419136, 0xDBE1EBE6, 0xE681C256,
+ 0x54A11E46, 0x69C137F6, 0x2E614D26, 0x13016496,
+ 0x9151F347, 0xAC31DAF7, 0xEB91A027, 0xD6F18997,
+ 0x64D15587, 0x59B17C37, 0x1E1106E7, 0x23712F57,
+ 0x58F35849, 0x659371F9, 0x22330B29, 0x1F532299,
+ 0xAD73FE89, 0x9013D739, 0xD7B3ADE9, 0xEAD38459,
+ 0x68831388, 0x55E33A38, 0x124340E8, 0x2F236958,
+ 0x9D03B548, 0xA0639CF8, 0xE7C3E628, 0xDAA3CF98,
+ 0x3813CFCB, 0x0573E67B, 0x42D39CAB, 0x7FB3B51B,
+ 0xCD93690B, 0xF0F340BB, 0xB7533A6B, 0x8A3313DB,
+ 0x0863840A, 0x3503ADBA, 0x72A3D76A, 0x4FC3FEDA,
+ 0xFDE322CA, 0xC0830B7A, 0x872371AA, 0xBA43581A,
+ 0x9932774D, 0xA4525EFD, 0xE3F2242D, 0xDE920D9D,
+ 0x6CB2D18D, 0x51D2F83D, 0x167282ED, 0x2B12AB5D,
+ 0xA9423C8C, 0x9422153C, 0xD3826FEC, 0xEEE2465C,
+ 0x5CC29A4C, 0x61A2B3FC, 0x2602C92C, 0x1B62E09C,
+ 0xF9D2E0CF, 0xC4B2C97F, 0x8312B3AF, 0xBE729A1F,
+ 0x0C52460F, 0x31326FBF, 0x7692156F, 0x4BF23CDF,
+ 0xC9A2AB0E, 0xF4C282BE, 0xB362F86E, 0x8E02D1DE,
+ 0x3C220DCE, 0x0142247E, 0x46E25EAE, 0x7B82771E,
+ 0xB1E6B092, 0x8C869922, 0xCB26E3F2, 0xF646CA42,
+ 0x44661652, 0x79063FE2, 0x3EA64532, 0x03C66C82,
+ 0x8196FB53, 0xBCF6D2E3, 0xFB56A833, 0xC6368183,
+ 0x74165D93, 0x49767423, 0x0ED60EF3, 0x33B62743,
+ 0xD1062710, 0xEC660EA0, 0xABC67470, 0x96A65DC0,
+ 0x248681D0, 0x19E6A860, 0x5E46D2B0, 0x6326FB00,
+ 0xE1766CD1, 0xDC164561, 0x9BB63FB1, 0xA6D61601,
+ 0x14F6CA11, 0x2996E3A1, 0x6E369971, 0x5356B0C1,
+ 0x70279F96, 0x4D47B626, 0x0AE7CCF6, 0x3787E546,
+ 0x85A73956, 0xB8C710E6, 0xFF676A36, 0xC2074386,
+ 0x4057D457, 0x7D37FDE7, 0x3A978737, 0x07F7AE87,
+ 0xB5D77297, 0x88B75B27, 0xCF1721F7, 0xF2770847,
+ 0x10C70814, 0x2DA721A4, 0x6A075B74, 0x576772C4,
+ 0xE547AED4, 0xD8278764, 0x9F87FDB4, 0xA2E7D404,
+ 0x20B743D5, 0x1DD76A65, 0x5A7710B5, 0x67173905,
+ 0xD537E515, 0xE857CCA5, 0xAFF7B675, 0x92979FC5,
+ 0xE915E8DB, 0xD475C16B, 0x93D5BBBB, 0xAEB5920B,
+ 0x1C954E1B, 0x21F567AB, 0x66551D7B, 0x5B3534CB,
+ 0xD965A31A, 0xE4058AAA, 0xA3A5F07A, 0x9EC5D9CA,
+ 0x2CE505DA, 0x11852C6A, 0x562556BA, 0x6B457F0A,
+ 0x89F57F59, 0xB49556E9, 0xF3352C39, 0xCE550589,
+ 0x7C75D999, 0x4115F029, 0x06B58AF9, 0x3BD5A349,
+ 0xB9853498, 0x84E51D28, 0xC34567F8, 0xFE254E48,
+ 0x4C059258, 0x7165BBE8, 0x36C5C138, 0x0BA5E888,
+ 0x28D4C7DF, 0x15B4EE6F, 0x521494BF, 0x6F74BD0F,
+ 0xDD54611F, 0xE03448AF, 0xA794327F, 0x9AF41BCF,
+ 0x18A48C1E, 0x25C4A5AE, 0x6264DF7E, 0x5F04F6CE,
+ 0xED242ADE, 0xD044036E, 0x97E479BE, 0xAA84500E,
+ 0x4834505D, 0x755479ED, 0x32F4033D, 0x0F942A8D,
+ 0xBDB4F69D, 0x80D4DF2D, 0xC774A5FD, 0xFA148C4D,
+ 0x78441B9C, 0x4524322C, 0x028448FC, 0x3FE4614C,
+ 0x8DC4BD5C, 0xB0A494EC, 0xF704EE3C, 0xCA64C78C
+ }, {
+ 0x00000000, 0xCB5CD3A5, 0x4DC8A10B, 0x869472AE,
+ 0x9B914216, 0x50CD91B3, 0xD659E31D, 0x1D0530B8,
+ 0xEC53826D, 0x270F51C8, 0xA19B2366, 0x6AC7F0C3,
+ 0x77C2C07B, 0xBC9E13DE, 0x3A0A6170, 0xF156B2D5,
+ 0x03D6029B, 0xC88AD13E, 0x4E1EA390, 0x85427035,
+ 0x9847408D, 0x531B9328, 0xD58FE186, 0x1ED33223,
+ 0xEF8580F6, 0x24D95353, 0xA24D21FD, 0x6911F258,
+ 0x7414C2E0, 0xBF481145, 0x39DC63EB, 0xF280B04E,
+ 0x07AC0536, 0xCCF0D693, 0x4A64A43D, 0x81387798,
+ 0x9C3D4720, 0x57619485, 0xD1F5E62B, 0x1AA9358E,
+ 0xEBFF875B, 0x20A354FE, 0xA6372650, 0x6D6BF5F5,
+ 0x706EC54D, 0xBB3216E8, 0x3DA66446, 0xF6FAB7E3,
+ 0x047A07AD, 0xCF26D408, 0x49B2A6A6, 0x82EE7503,
+ 0x9FEB45BB, 0x54B7961E, 0xD223E4B0, 0x197F3715,
+ 0xE82985C0, 0x23755665, 0xA5E124CB, 0x6EBDF76E,
+ 0x73B8C7D6, 0xB8E41473, 0x3E7066DD, 0xF52CB578,
+ 0x0F580A6C, 0xC404D9C9, 0x4290AB67, 0x89CC78C2,
+ 0x94C9487A, 0x5F959BDF, 0xD901E971, 0x125D3AD4,
+ 0xE30B8801, 0x28575BA4, 0xAEC3290A, 0x659FFAAF,
+ 0x789ACA17, 0xB3C619B2, 0x35526B1C, 0xFE0EB8B9,
+ 0x0C8E08F7, 0xC7D2DB52, 0x4146A9FC, 0x8A1A7A59,
+ 0x971F4AE1, 0x5C439944, 0xDAD7EBEA, 0x118B384F,
+ 0xE0DD8A9A, 0x2B81593F, 0xAD152B91, 0x6649F834,
+ 0x7B4CC88C, 0xB0101B29, 0x36846987, 0xFDD8BA22,
+ 0x08F40F5A, 0xC3A8DCFF, 0x453CAE51, 0x8E607DF4,
+ 0x93654D4C, 0x58399EE9, 0xDEADEC47, 0x15F13FE2,
+ 0xE4A78D37, 0x2FFB5E92, 0xA96F2C3C, 0x6233FF99,
+ 0x7F36CF21, 0xB46A1C84, 0x32FE6E2A, 0xF9A2BD8F,
+ 0x0B220DC1, 0xC07EDE64, 0x46EAACCA, 0x8DB67F6F,
+ 0x90B34FD7, 0x5BEF9C72, 0xDD7BEEDC, 0x16273D79,
+ 0xE7718FAC, 0x2C2D5C09, 0xAAB92EA7, 0x61E5FD02,
+ 0x7CE0CDBA, 0xB7BC1E1F, 0x31286CB1, 0xFA74BF14,
+ 0x1EB014D8, 0xD5ECC77D, 0x5378B5D3, 0x98246676,
+ 0x852156CE, 0x4E7D856B, 0xC8E9F7C5, 0x03B52460,
+ 0xF2E396B5, 0x39BF4510, 0xBF2B37BE, 0x7477E41B,
+ 0x6972D4A3, 0xA22E0706, 0x24BA75A8, 0xEFE6A60D,
+ 0x1D661643, 0xD63AC5E6, 0x50AEB748, 0x9BF264ED,
+ 0x86F75455, 0x4DAB87F0, 0xCB3FF55E, 0x006326FB,
+ 0xF135942E, 0x3A69478B, 0xBCFD3525, 0x77A1E680,
+ 0x6AA4D638, 0xA1F8059D, 0x276C7733, 0xEC30A496,
+ 0x191C11EE, 0xD240C24B, 0x54D4B0E5, 0x9F886340,
+ 0x828D53F8, 0x49D1805D, 0xCF45F2F3, 0x04192156,
+ 0xF54F9383, 0x3E134026, 0xB8873288, 0x73DBE12D,
+ 0x6EDED195, 0xA5820230, 0x2316709E, 0xE84AA33B,
+ 0x1ACA1375, 0xD196C0D0, 0x5702B27E, 0x9C5E61DB,
+ 0x815B5163, 0x4A0782C6, 0xCC93F068, 0x07CF23CD,
+ 0xF6999118, 0x3DC542BD, 0xBB513013, 0x700DE3B6,
+ 0x6D08D30E, 0xA65400AB, 0x20C07205, 0xEB9CA1A0,
+ 0x11E81EB4, 0xDAB4CD11, 0x5C20BFBF, 0x977C6C1A,
+ 0x8A795CA2, 0x41258F07, 0xC7B1FDA9, 0x0CED2E0C,
+ 0xFDBB9CD9, 0x36E74F7C, 0xB0733DD2, 0x7B2FEE77,
+ 0x662ADECF, 0xAD760D6A, 0x2BE27FC4, 0xE0BEAC61,
+ 0x123E1C2F, 0xD962CF8A, 0x5FF6BD24, 0x94AA6E81,
+ 0x89AF5E39, 0x42F38D9C, 0xC467FF32, 0x0F3B2C97,
+ 0xFE6D9E42, 0x35314DE7, 0xB3A53F49, 0x78F9ECEC,
+ 0x65FCDC54, 0xAEA00FF1, 0x28347D5F, 0xE368AEFA,
+ 0x16441B82, 0xDD18C827, 0x5B8CBA89, 0x90D0692C,
+ 0x8DD55994, 0x46898A31, 0xC01DF89F, 0x0B412B3A,
+ 0xFA1799EF, 0x314B4A4A, 0xB7DF38E4, 0x7C83EB41,
+ 0x6186DBF9, 0xAADA085C, 0x2C4E7AF2, 0xE712A957,
+ 0x15921919, 0xDECECABC, 0x585AB812, 0x93066BB7,
+ 0x8E035B0F, 0x455F88AA, 0xC3CBFA04, 0x089729A1,
+ 0xF9C19B74, 0x329D48D1, 0xB4093A7F, 0x7F55E9DA,
+ 0x6250D962, 0xA90C0AC7, 0x2F987869, 0xE4C4ABCC
+ }, {
+ 0x00000000, 0xA6770BB4, 0x979F1129, 0x31E81A9D,
+ 0xF44F2413, 0x52382FA7, 0x63D0353A, 0xC5A73E8E,
+ 0x33EF4E67, 0x959845D3, 0xA4705F4E, 0x020754FA,
+ 0xC7A06A74, 0x61D761C0, 0x503F7B5D, 0xF64870E9,
+ 0x67DE9CCE, 0xC1A9977A, 0xF0418DE7, 0x56368653,
+ 0x9391B8DD, 0x35E6B369, 0x040EA9F4, 0xA279A240,
+ 0x5431D2A9, 0xF246D91D, 0xC3AEC380, 0x65D9C834,
+ 0xA07EF6BA, 0x0609FD0E, 0x37E1E793, 0x9196EC27,
+ 0xCFBD399C, 0x69CA3228, 0x582228B5, 0xFE552301,
+ 0x3BF21D8F, 0x9D85163B, 0xAC6D0CA6, 0x0A1A0712,
+ 0xFC5277FB, 0x5A257C4F, 0x6BCD66D2, 0xCDBA6D66,
+ 0x081D53E8, 0xAE6A585C, 0x9F8242C1, 0x39F54975,
+ 0xA863A552, 0x0E14AEE6, 0x3FFCB47B, 0x998BBFCF,
+ 0x5C2C8141, 0xFA5B8AF5, 0xCBB39068, 0x6DC49BDC,
+ 0x9B8CEB35, 0x3DFBE081, 0x0C13FA1C, 0xAA64F1A8,
+ 0x6FC3CF26, 0xC9B4C492, 0xF85CDE0F, 0x5E2BD5BB,
+ 0x440B7579, 0xE27C7ECD, 0xD3946450, 0x75E36FE4,
+ 0xB044516A, 0x16335ADE, 0x27DB4043, 0x81AC4BF7,
+ 0x77E43B1E, 0xD19330AA, 0xE07B2A37, 0x460C2183,
+ 0x83AB1F0D, 0x25DC14B9, 0x14340E24, 0xB2430590,
+ 0x23D5E9B7, 0x85A2E203, 0xB44AF89E, 0x123DF32A,
+ 0xD79ACDA4, 0x71EDC610, 0x4005DC8D, 0xE672D739,
+ 0x103AA7D0, 0xB64DAC64, 0x87A5B6F9, 0x21D2BD4D,
+ 0xE47583C3, 0x42028877, 0x73EA92EA, 0xD59D995E,
+ 0x8BB64CE5, 0x2DC14751, 0x1C295DCC, 0xBA5E5678,
+ 0x7FF968F6, 0xD98E6342, 0xE86679DF, 0x4E11726B,
+ 0xB8590282, 0x1E2E0936, 0x2FC613AB, 0x89B1181F,
+ 0x4C162691, 0xEA612D25, 0xDB8937B8, 0x7DFE3C0C,
+ 0xEC68D02B, 0x4A1FDB9F, 0x7BF7C102, 0xDD80CAB6,
+ 0x1827F438, 0xBE50FF8C, 0x8FB8E511, 0x29CFEEA5,
+ 0xDF879E4C, 0x79F095F8, 0x48188F65, 0xEE6F84D1,
+ 0x2BC8BA5F, 0x8DBFB1EB, 0xBC57AB76, 0x1A20A0C2,
+ 0x8816EAF2, 0x2E61E146, 0x1F89FBDB, 0xB9FEF06F,
+ 0x7C59CEE1, 0xDA2EC555, 0xEBC6DFC8, 0x4DB1D47C,
+ 0xBBF9A495, 0x1D8EAF21, 0x2C66B5BC, 0x8A11BE08,
+ 0x4FB68086, 0xE9C18B32, 0xD82991AF, 0x7E5E9A1B,
+ 0xEFC8763C, 0x49BF7D88, 0x78576715, 0xDE206CA1,
+ 0x1B87522F, 0xBDF0599B, 0x8C184306, 0x2A6F48B2,
+ 0xDC27385B, 0x7A5033EF, 0x4BB82972, 0xEDCF22C6,
+ 0x28681C48, 0x8E1F17FC, 0xBFF70D61, 0x198006D5,
+ 0x47ABD36E, 0xE1DCD8DA, 0xD034C247, 0x7643C9F3,
+ 0xB3E4F77D, 0x1593FCC9, 0x247BE654, 0x820CEDE0,
+ 0x74449D09, 0xD23396BD, 0xE3DB8C20, 0x45AC8794,
+ 0x800BB91A, 0x267CB2AE, 0x1794A833, 0xB1E3A387,
+ 0x20754FA0, 0x86024414, 0xB7EA5E89, 0x119D553D,
+ 0xD43A6BB3, 0x724D6007, 0x43A57A9A, 0xE5D2712E,
+ 0x139A01C7, 0xB5ED0A73, 0x840510EE, 0x22721B5A,
+ 0xE7D525D4, 0x41A22E60, 0x704A34FD, 0xD63D3F49,
+ 0xCC1D9F8B, 0x6A6A943F, 0x5B828EA2, 0xFDF58516,
+ 0x3852BB98, 0x9E25B02C, 0xAFCDAAB1, 0x09BAA105,
+ 0xFFF2D1EC, 0x5985DA58, 0x686DC0C5, 0xCE1ACB71,
+ 0x0BBDF5FF, 0xADCAFE4B, 0x9C22E4D6, 0x3A55EF62,
+ 0xABC30345, 0x0DB408F1, 0x3C5C126C, 0x9A2B19D8,
+ 0x5F8C2756, 0xF9FB2CE2, 0xC813367F, 0x6E643DCB,
+ 0x982C4D22, 0x3E5B4696, 0x0FB35C0B, 0xA9C457BF,
+ 0x6C636931, 0xCA146285, 0xFBFC7818, 0x5D8B73AC,
+ 0x03A0A617, 0xA5D7ADA3, 0x943FB73E, 0x3248BC8A,
+ 0xF7EF8204, 0x519889B0, 0x6070932D, 0xC6079899,
+ 0x304FE870, 0x9638E3C4, 0xA7D0F959, 0x01A7F2ED,
+ 0xC400CC63, 0x6277C7D7, 0x539FDD4A, 0xF5E8D6FE,
+ 0x647E3AD9, 0xC209316D, 0xF3E12BF0, 0x55962044,
+ 0x90311ECA, 0x3646157E, 0x07AE0FE3, 0xA1D90457,
+ 0x579174BE, 0xF1E67F0A, 0xC00E6597, 0x66796E23,
+ 0xA3DE50AD, 0x05A95B19, 0x34414184, 0x92364A30
+ }, {
+ 0x00000000, 0xCCAA009E, 0x4225077D, 0x8E8F07E3,
+ 0x844A0EFA, 0x48E00E64, 0xC66F0987, 0x0AC50919,
+ 0xD3E51BB5, 0x1F4F1B2B, 0x91C01CC8, 0x5D6A1C56,
+ 0x57AF154F, 0x9B0515D1, 0x158A1232, 0xD92012AC,
+ 0x7CBB312B, 0xB01131B5, 0x3E9E3656, 0xF23436C8,
+ 0xF8F13FD1, 0x345B3F4F, 0xBAD438AC, 0x767E3832,
+ 0xAF5E2A9E, 0x63F42A00, 0xED7B2DE3, 0x21D12D7D,
+ 0x2B142464, 0xE7BE24FA, 0x69312319, 0xA59B2387,
+ 0xF9766256, 0x35DC62C8, 0xBB53652B, 0x77F965B5,
+ 0x7D3C6CAC, 0xB1966C32, 0x3F196BD1, 0xF3B36B4F,
+ 0x2A9379E3, 0xE639797D, 0x68B67E9E, 0xA41C7E00,
+ 0xAED97719, 0x62737787, 0xECFC7064, 0x205670FA,
+ 0x85CD537D, 0x496753E3, 0xC7E85400, 0x0B42549E,
+ 0x01875D87, 0xCD2D5D19, 0x43A25AFA, 0x8F085A64,
+ 0x562848C8, 0x9A824856, 0x140D4FB5, 0xD8A74F2B,
+ 0xD2624632, 0x1EC846AC, 0x9047414F, 0x5CED41D1,
+ 0x299DC2ED, 0xE537C273, 0x6BB8C590, 0xA712C50E,
+ 0xADD7CC17, 0x617DCC89, 0xEFF2CB6A, 0x2358CBF4,
+ 0xFA78D958, 0x36D2D9C6, 0xB85DDE25, 0x74F7DEBB,
+ 0x7E32D7A2, 0xB298D73C, 0x3C17D0DF, 0xF0BDD041,
+ 0x5526F3C6, 0x998CF358, 0x1703F4BB, 0xDBA9F425,
+ 0xD16CFD3C, 0x1DC6FDA2, 0x9349FA41, 0x5FE3FADF,
+ 0x86C3E873, 0x4A69E8ED, 0xC4E6EF0E, 0x084CEF90,
+ 0x0289E689, 0xCE23E617, 0x40ACE1F4, 0x8C06E16A,
+ 0xD0EBA0BB, 0x1C41A025, 0x92CEA7C6, 0x5E64A758,
+ 0x54A1AE41, 0x980BAEDF, 0x1684A93C, 0xDA2EA9A2,
+ 0x030EBB0E, 0xCFA4BB90, 0x412BBC73, 0x8D81BCED,
+ 0x8744B5F4, 0x4BEEB56A, 0xC561B289, 0x09CBB217,
+ 0xAC509190, 0x60FA910E, 0xEE7596ED, 0x22DF9673,
+ 0x281A9F6A, 0xE4B09FF4, 0x6A3F9817, 0xA6959889,
+ 0x7FB58A25, 0xB31F8ABB, 0x3D908D58, 0xF13A8DC6,
+ 0xFBFF84DF, 0x37558441, 0xB9DA83A2, 0x7570833C,
+ 0x533B85DA, 0x9F918544, 0x111E82A7, 0xDDB48239,
+ 0xD7718B20, 0x1BDB8BBE, 0x95548C5D, 0x59FE8CC3,
+ 0x80DE9E6F, 0x4C749EF1, 0xC2FB9912, 0x0E51998C,
+ 0x04949095, 0xC83E900B, 0x46B197E8, 0x8A1B9776,
+ 0x2F80B4F1, 0xE32AB46F, 0x6DA5B38C, 0xA10FB312,
+ 0xABCABA0B, 0x6760BA95, 0xE9EFBD76, 0x2545BDE8,
+ 0xFC65AF44, 0x30CFAFDA, 0xBE40A839, 0x72EAA8A7,
+ 0x782FA1BE, 0xB485A120, 0x3A0AA6C3, 0xF6A0A65D,
+ 0xAA4DE78C, 0x66E7E712, 0xE868E0F1, 0x24C2E06F,
+ 0x2E07E976, 0xE2ADE9E8, 0x6C22EE0B, 0xA088EE95,
+ 0x79A8FC39, 0xB502FCA7, 0x3B8DFB44, 0xF727FBDA,
+ 0xFDE2F2C3, 0x3148F25D, 0xBFC7F5BE, 0x736DF520,
+ 0xD6F6D6A7, 0x1A5CD639, 0x94D3D1DA, 0x5879D144,
+ 0x52BCD85D, 0x9E16D8C3, 0x1099DF20, 0xDC33DFBE,
+ 0x0513CD12, 0xC9B9CD8C, 0x4736CA6F, 0x8B9CCAF1,
+ 0x8159C3E8, 0x4DF3C376, 0xC37CC495, 0x0FD6C40B,
+ 0x7AA64737, 0xB60C47A9, 0x3883404A, 0xF42940D4,
+ 0xFEEC49CD, 0x32464953, 0xBCC94EB0, 0x70634E2E,
+ 0xA9435C82, 0x65E95C1C, 0xEB665BFF, 0x27CC5B61,
+ 0x2D095278, 0xE1A352E6, 0x6F2C5505, 0xA386559B,
+ 0x061D761C, 0xCAB77682, 0x44387161, 0x889271FF,
+ 0x825778E6, 0x4EFD7878, 0xC0727F9B, 0x0CD87F05,
+ 0xD5F86DA9, 0x19526D37, 0x97DD6AD4, 0x5B776A4A,
+ 0x51B26353, 0x9D1863CD, 0x1397642E, 0xDF3D64B0,
+ 0x83D02561, 0x4F7A25FF, 0xC1F5221C, 0x0D5F2282,
+ 0x079A2B9B, 0xCB302B05, 0x45BF2CE6, 0x89152C78,
+ 0x50353ED4, 0x9C9F3E4A, 0x121039A9, 0xDEBA3937,
+ 0xD47F302E, 0x18D530B0, 0x965A3753, 0x5AF037CD,
+ 0xFF6B144A, 0x33C114D4, 0xBD4E1337, 0x71E413A9,
+ 0x7B211AB0, 0xB78B1A2E, 0x39041DCD, 0xF5AE1D53,
+ 0x2C8E0FFF, 0xE0240F61, 0x6EAB0882, 0xA201081C,
+ 0xA8C40105, 0x646E019B, 0xEAE10678, 0x264B06E6
+ }
+};
diff --git a/src/liblzma/check/crc32_tablegen.c b/src/liblzma/check/crc32_tablegen.c
new file mode 100644
index 0000000..280d3b1
--- /dev/null
+++ b/src/liblzma/check/crc32_tablegen.c
@@ -0,0 +1,55 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc32_tablegen.c
+/// \brief Generates CRC32 crc32_table.c
+///
+/// Compiling: gcc -std=c99 -o crc32_tablegen crc32_tablegen.c crc32_init.c
+/// Add -DWORDS_BIGENDIAN to generate big endian table.
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include <sys/types.h>
+#include <inttypes.h>
+#include <stdio.h>
+
+
+extern void lzma_crc32_init(void);
+
+extern uint32_t lzma_crc32_table[8][256];
+
+
+int
+main()
+{
+ lzma_crc32_init();
+
+ printf("/* This file has been automatically generated by "
+ "crc32_tablegen.c. */\n\n"
+ "#include <inttypes.h>\n\n"
+ "const uint32_t lzma_crc32_table[8][256] = {\n\t{");
+
+ for (size_t s = 0; s < 8; ++s) {
+ for (size_t b = 0; b < 256; ++b) {
+ if ((b % 4) == 0)
+ printf("\n\t\t");
+
+ printf("0x%08" PRIX32, lzma_crc32_table[s][b]);
+
+ if (b != 255)
+ printf(", ");
+ }
+
+ if (s == 7)
+ printf("\n\t}\n};\n");
+ else
+ printf("\n\t}, {");
+ }
+
+ return 0;
+}
diff --git a/src/liblzma/check/crc32_x86.s b/src/liblzma/check/crc32_x86.s
new file mode 100644
index 0000000..ad4ef09
--- /dev/null
+++ b/src/liblzma/check/crc32_x86.s
@@ -0,0 +1,217 @@
+/*
+ * Speed-optimized CRC32 using slicing-by-eight algorithm
+ * Instruction set: i386
+ * Optimized for: i686
+ *
+ * This code has been put into the public domain by its authors:
+ * Original code by Igor Pavlov <http://7-zip.org/>
+ * Position-independent version by Lasse Collin <lasse.collin@tukaani.org>
+ *
+ * This code needs lzma_crc32_table, which can be created using the
+ * following C code:
+
+uint32_t lzma_crc32_table[8][256];
+
+void
+init_table(void)
+{
+ // IEEE-802.3 (CRC32)
+ static const uint32_t poly32 = UINT32_C(0xEDB88320);
+
+ // Castagnoli (CRC32C)
+ // static const uint32_t poly32 = UINT32_C(0x82F63B78);
+
+ // Koopman
+ // static const uint32_t poly32 = UINT32_C(0xEB31D82E);
+
+ for (size_t s = 0; s < 8; ++s) {
+ for (size_t b = 0; b < 256; ++b) {
+ uint32_t r = s == 0 ? b : lzma_crc32_table[s - 1][b];
+
+ for (size_t i = 0; i < 8; ++i) {
+ if (r & 1)
+ r = (r >> 1) ^ poly32;
+ else
+ r >>= 1;
+ }
+
+ lzma_crc32_table[s][b] = r;
+ }
+ }
+}
+
+ * The prototype of the CRC32 function:
+ * extern uint32_t lzma_crc32(const uint8_t *buf, size_t size, uint32_t crc);
+ */
+
+ .text
+ .global lzma_crc32
+ .type lzma_crc32, @function
+
+ .align 16
+lzma_crc32:
+ /*
+ * Register usage:
+ * %eax crc
+ * %esi buf
+ * %edi size or buf + size
+ * %ebx lzma_crc32_table
+ * %ebp Table index
+ * %ecx Temporary
+ * %edx Temporary
+ */
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+ pushl %ebp
+ movl 0x14(%esp), %esi /* buf */
+ movl 0x18(%esp), %edi /* size */
+ movl 0x1C(%esp), %eax /* crc */
+
+ /*
+ * Store the address of lzma_crc32_table to %ebx. This is needed to
+ * get position-independent code (PIC).
+ */
+ call .L_PIC
+.L_PIC:
+ popl %ebx
+ addl $_GLOBAL_OFFSET_TABLE_+[.-.L_PIC], %ebx
+ movl lzma_crc32_table@GOT(%ebx), %ebx
+
+ /* Complement the initial value. */
+ notl %eax
+
+ .align 16
+.L_align:
+ /*
+ * Check if there is enough input to use slicing-by-eight.
+ * We need 16 bytes, because the loop pre-reads eight bytes.
+ */
+ cmpl $16, %edi
+ jl .L_rest
+
+ /* Check if we have reached alignment of eight bytes. */
+ testl $7, %esi
+ jz .L_slice
+
+ /* Calculate CRC of the next input byte. */
+ movzbl (%esi), %ebp
+ incl %esi
+ movzbl %al, %ecx
+ xorl %ecx, %ebp
+ shrl $8, %eax
+ xorl (%ebx, %ebp, 4), %eax
+ decl %edi
+ jmp .L_align
+
+ .align 4
+.L_slice:
+ /*
+ * If we get here, there's at least 16 bytes of aligned input
+ * available. Make %edi multiple of eight bytes. Store the possible
+ * remainder over the "size" variable in the argument stack.
+ */
+ movl %edi, 0x18(%esp)
+ andl $-8, %edi
+ subl %edi, 0x18(%esp)
+
+ /*
+ * Let %edi be buf + size - 8 while running the main loop. This way
+ * we can compare for equality to determine when exit the loop.
+ */
+ addl %esi, %edi
+ subl $8, %edi
+
+ /* Read in the first eight aligned bytes. */
+ xorl (%esi), %eax
+ movl 4(%esi), %ecx
+ movzbl %cl, %ebp
+
+.L_loop:
+ movl 0x0C00(%ebx, %ebp, 4), %edx
+ movzbl %ch, %ebp
+ xorl 0x0800(%ebx, %ebp, 4), %edx
+ shrl $16, %ecx
+ xorl 8(%esi), %edx
+ movzbl %cl, %ebp
+ xorl 0x0400(%ebx, %ebp, 4), %edx
+ movzbl %ch, %ebp
+ xorl (%ebx, %ebp, 4), %edx
+ movzbl %al, %ebp
+
+ /*
+ * Read the next four bytes, for which the CRC is calculated
+ * on the next interation of the loop.
+ */
+ movl 12(%esi), %ecx
+
+ xorl 0x1C00(%ebx, %ebp, 4), %edx
+ movzbl %ah, %ebp
+ shrl $16, %eax
+ xorl 0x1800(%ebx, %ebp, 4), %edx
+ movzbl %ah, %ebp
+ movzbl %al, %eax
+ movl 0x1400(%ebx, %eax, 4), %eax
+ addl $8, %esi
+ xorl %edx, %eax
+ xorl 0x1000(%ebx, %ebp, 4), %eax
+
+ /* Check for end of aligned input. */
+ cmpl %edi, %esi
+ movzbl %cl, %ebp
+ jne .L_loop
+
+ /*
+ * Process the remaining eight bytes, which we have already
+ * copied to %ecx and %edx.
+ */
+ movl 0x0C00(%ebx, %ebp, 4), %edx
+ movzbl %ch, %ebp
+ xorl 0x0800(%ebx, %ebp, 4), %edx
+ shrl $16, %ecx
+ movzbl %cl, %ebp
+ xorl 0x0400(%ebx, %ebp, 4), %edx
+ movzbl %ch, %ebp
+ xorl (%ebx, %ebp, 4), %edx
+ movzbl %al, %ebp
+
+ xorl 0x1C00(%ebx, %ebp, 4), %edx
+ movzbl %ah, %ebp
+ shrl $16, %eax
+ xorl 0x1800(%ebx, %ebp, 4), %edx
+ movzbl %ah, %ebp
+ movzbl %al, %eax
+ movl 0x1400(%ebx, %eax, 4), %eax
+ addl $8, %esi
+ xorl %edx, %eax
+ xorl 0x1000(%ebx, %ebp, 4), %eax
+
+ /* Copy the number of remaining bytes to %edi. */
+ movl 0x18(%esp), %edi
+
+.L_rest:
+ /* Check for end of input. */
+ testl %edi, %edi
+ jz .L_return
+
+ /* Calculate CRC of the next input byte. */
+ movzbl (%esi), %ebp
+ incl %esi
+ movzbl %al, %ecx
+ xorl %ecx, %ebp
+ shrl $8, %eax
+ xorl (%ebx, %ebp, 4), %eax
+ decl %edi
+ jmp .L_rest
+
+.L_return:
+ /* Complement the final value. */
+ notl %eax
+
+ popl %ebp
+ popl %edi
+ popl %esi
+ popl %ebx
+ ret
+
+ .size lzma_crc32, .-lzma_crc32
diff --git a/src/liblzma/check/crc64.c b/src/liblzma/check/crc64.c
new file mode 100644
index 0000000..e31bc7f
--- /dev/null
+++ b/src/liblzma/check/crc64.c
@@ -0,0 +1,75 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc64.c
+/// \brief CRC64 calculation
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "check.h"
+#include "crc_macros.h"
+
+
+#ifdef WORDS_BIGENDIAN
+# define A1(x) ((x) >> 56)
+#else
+# define A1 A
+#endif
+
+
+// See comments in crc32.c.
+extern uint64_t
+lzma_crc64(const uint8_t *buf, size_t size, uint64_t crc)
+{
+ crc = ~crc;
+
+#ifdef WORDS_BIGENDIAN
+ crc = bswap_64(crc);
+#endif
+
+ if (size > 4) {
+ while ((uintptr_t)(buf) & 3) {
+ crc = lzma_crc64_table[0][*buf++ ^ A1(crc)] ^ S8(crc);
+ --size;
+ }
+
+ const uint8_t *const limit = buf + (size & ~(size_t)(3));
+ size &= (size_t)(3);
+
+ // Calculate the CRC64 using the slice-by-four algorithm.
+ //
+ // In contrast to CRC32 code, this one seems to be fastest
+ // with -O3 -fomit-frame-pointer.
+ while (buf < limit) {
+#ifdef WORDS_BIGENDIAN
+ const uint32_t tmp = (crc >> 32) ^ *(uint32_t *)(buf);
+#else
+ const uint32_t tmp = crc ^ *(uint32_t *)(buf);
+#endif
+ buf += 4;
+
+ // It is critical for performance, that
+ // the crc variable is XORed between the
+ // two table-lookup pairs.
+ crc = lzma_crc64_table[3][A(tmp)]
+ ^ lzma_crc64_table[2][B(tmp)]
+ ^ S32(crc)
+ ^ lzma_crc64_table[1][C(tmp)]
+ ^ lzma_crc64_table[0][D(tmp)];
+ }
+ }
+
+ while (size-- != 0)
+ crc = lzma_crc64_table[0][*buf++ ^ A1(crc)] ^ S8(crc);
+
+#ifdef WORDS_BIGENDIAN
+ crc = bswap_64(crc);
+#endif
+
+ return ~crc;
+}
diff --git a/src/liblzma/check/crc64_init.c b/src/liblzma/check/crc64_init.c
new file mode 100644
index 0000000..49c59e9
--- /dev/null
+++ b/src/liblzma/check/crc64_init.c
@@ -0,0 +1,58 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc64_init.c
+/// \brief CRC64 table initialization
+//
+// This code is based on various public domain sources.
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <inttypes.h>
+
+#ifdef WORDS_BIGENDIAN
+# include "check_byteswap.h"
+#endif
+
+
+uint64_t lzma_crc64_table[4][256];
+
+
+extern void
+lzma_crc64_init(void)
+{
+ static const uint64_t poly64 = UINT64_C(0xC96C5795D7870F42);
+
+ for (size_t s = 0; s < 4; ++s) {
+ for (size_t b = 0; b < 256; ++b) {
+ uint64_t r = s == 0 ? b : lzma_crc64_table[s - 1][b];
+
+ for (size_t i = 0; i < 8; ++i) {
+ if (r & 1)
+ r = (r >> 1) ^ poly64;
+ else
+ r >>= 1;
+ }
+
+ lzma_crc64_table[s][b] = r;
+ }
+ }
+
+#ifdef WORDS_BIGENDIAN
+ for (size_t s = 0; s < 4; ++s)
+ for (size_t b = 0; b < 256; ++b)
+ lzma_crc64_table[s][b]
+ = bswap_64(lzma_crc64_table[s][b]);
+#endif
+
+ return;
+}
diff --git a/src/liblzma/check/crc64_table.c b/src/liblzma/check/crc64_table.c
new file mode 100644
index 0000000..0f2d1fb
--- /dev/null
+++ b/src/liblzma/check/crc64_table.c
@@ -0,0 +1,22 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc64_table.c
+/// \brief Precalculated CRC64 table with correct endianness
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef WORDS_BIGENDIAN
+# include "crc64_table_be.h"
+#else
+# include "crc64_table_le.h"
+#endif
diff --git a/src/liblzma/check/crc64_table_be.h b/src/liblzma/check/crc64_table_be.h
new file mode 100644
index 0000000..9951840
--- /dev/null
+++ b/src/liblzma/check/crc64_table_be.h
@@ -0,0 +1,523 @@
+/* This file has been automatically generated by crc64_tablegen.c. */
+
+#include <inttypes.h>
+
+const uint64_t lzma_crc64_table[4][256] = {
+ {
+ UINT64_C(0x0000000000000000), UINT64_C(0x6F5FA703BE4C2EB3),
+ UINT64_C(0x5BA040A8573684F4), UINT64_C(0x34FFE7ABE97AAA47),
+ UINT64_C(0x335E8FFF84C3D07B), UINT64_C(0x5C0128FC3A8FFEC8),
+ UINT64_C(0x68FECF57D3F5548F), UINT64_C(0x07A168546DB97A3C),
+ UINT64_C(0x66BC1EFF0987A1F7), UINT64_C(0x09E3B9FCB7CB8F44),
+ UINT64_C(0x3D1C5E575EB12503), UINT64_C(0x5243F954E0FD0BB0),
+ UINT64_C(0x55E291008D44718C), UINT64_C(0x3ABD360333085F3F),
+ UINT64_C(0x0E42D1A8DA72F578), UINT64_C(0x611D76AB643EDBCB),
+ UINT64_C(0x4966335138A19B7D), UINT64_C(0x2639945286EDB5CE),
+ UINT64_C(0x12C673F96F971F89), UINT64_C(0x7D99D4FAD1DB313A),
+ UINT64_C(0x7A38BCAEBC624B06), UINT64_C(0x15671BAD022E65B5),
+ UINT64_C(0x2198FC06EB54CFF2), UINT64_C(0x4EC75B055518E141),
+ UINT64_C(0x2FDA2DAE31263A8A), UINT64_C(0x40858AAD8F6A1439),
+ UINT64_C(0x747A6D066610BE7E), UINT64_C(0x1B25CA05D85C90CD),
+ UINT64_C(0x1C84A251B5E5EAF1), UINT64_C(0x73DB05520BA9C442),
+ UINT64_C(0x4724E2F9E2D36E05), UINT64_C(0x287B45FA5C9F40B6),
+ UINT64_C(0x92CC66A2704237FB), UINT64_C(0xFD93C1A1CE0E1948),
+ UINT64_C(0xC96C260A2774B30F), UINT64_C(0xA633810999389DBC),
+ UINT64_C(0xA192E95DF481E780), UINT64_C(0xCECD4E5E4ACDC933),
+ UINT64_C(0xFA32A9F5A3B76374), UINT64_C(0x956D0EF61DFB4DC7),
+ UINT64_C(0xF470785D79C5960C), UINT64_C(0x9B2FDF5EC789B8BF),
+ UINT64_C(0xAFD038F52EF312F8), UINT64_C(0xC08F9FF690BF3C4B),
+ UINT64_C(0xC72EF7A2FD064677), UINT64_C(0xA87150A1434A68C4),
+ UINT64_C(0x9C8EB70AAA30C283), UINT64_C(0xF3D11009147CEC30),
+ UINT64_C(0xDBAA55F348E3AC86), UINT64_C(0xB4F5F2F0F6AF8235),
+ UINT64_C(0x800A155B1FD52872), UINT64_C(0xEF55B258A19906C1),
+ UINT64_C(0xE8F4DA0CCC207CFD), UINT64_C(0x87AB7D0F726C524E),
+ UINT64_C(0xB3549AA49B16F809), UINT64_C(0xDC0B3DA7255AD6BA),
+ UINT64_C(0xBD164B0C41640D71), UINT64_C(0xD249EC0FFF2823C2),
+ UINT64_C(0xE6B60BA416528985), UINT64_C(0x89E9ACA7A81EA736),
+ UINT64_C(0x8E48C4F3C5A7DD0A), UINT64_C(0xE11763F07BEBF3B9),
+ UINT64_C(0xD5E8845B929159FE), UINT64_C(0xBAB723582CDD774D),
+ UINT64_C(0xA187C3EBCA2BB664), UINT64_C(0xCED864E8746798D7),
+ UINT64_C(0xFA2783439D1D3290), UINT64_C(0x9578244023511C23),
+ UINT64_C(0x92D94C144EE8661F), UINT64_C(0xFD86EB17F0A448AC),
+ UINT64_C(0xC9790CBC19DEE2EB), UINT64_C(0xA626ABBFA792CC58),
+ UINT64_C(0xC73BDD14C3AC1793), UINT64_C(0xA8647A177DE03920),
+ UINT64_C(0x9C9B9DBC949A9367), UINT64_C(0xF3C43ABF2AD6BDD4),
+ UINT64_C(0xF46552EB476FC7E8), UINT64_C(0x9B3AF5E8F923E95B),
+ UINT64_C(0xAFC512431059431C), UINT64_C(0xC09AB540AE156DAF),
+ UINT64_C(0xE8E1F0BAF28A2D19), UINT64_C(0x87BE57B94CC603AA),
+ UINT64_C(0xB341B012A5BCA9ED), UINT64_C(0xDC1E17111BF0875E),
+ UINT64_C(0xDBBF7F457649FD62), UINT64_C(0xB4E0D846C805D3D1),
+ UINT64_C(0x801F3FED217F7996), UINT64_C(0xEF4098EE9F335725),
+ UINT64_C(0x8E5DEE45FB0D8CEE), UINT64_C(0xE10249464541A25D),
+ UINT64_C(0xD5FDAEEDAC3B081A), UINT64_C(0xBAA209EE127726A9),
+ UINT64_C(0xBD0361BA7FCE5C95), UINT64_C(0xD25CC6B9C1827226),
+ UINT64_C(0xE6A3211228F8D861), UINT64_C(0x89FC861196B4F6D2),
+ UINT64_C(0x334BA549BA69819F), UINT64_C(0x5C14024A0425AF2C),
+ UINT64_C(0x68EBE5E1ED5F056B), UINT64_C(0x07B442E253132BD8),
+ UINT64_C(0x00152AB63EAA51E4), UINT64_C(0x6F4A8DB580E67F57),
+ UINT64_C(0x5BB56A1E699CD510), UINT64_C(0x34EACD1DD7D0FBA3),
+ UINT64_C(0x55F7BBB6B3EE2068), UINT64_C(0x3AA81CB50DA20EDB),
+ UINT64_C(0x0E57FB1EE4D8A49C), UINT64_C(0x61085C1D5A948A2F),
+ UINT64_C(0x66A93449372DF013), UINT64_C(0x09F6934A8961DEA0),
+ UINT64_C(0x3D0974E1601B74E7), UINT64_C(0x5256D3E2DE575A54),
+ UINT64_C(0x7A2D961882C81AE2), UINT64_C(0x1572311B3C843451),
+ UINT64_C(0x218DD6B0D5FE9E16), UINT64_C(0x4ED271B36BB2B0A5),
+ UINT64_C(0x497319E7060BCA99), UINT64_C(0x262CBEE4B847E42A),
+ UINT64_C(0x12D3594F513D4E6D), UINT64_C(0x7D8CFE4CEF7160DE),
+ UINT64_C(0x1C9188E78B4FBB15), UINT64_C(0x73CE2FE4350395A6),
+ UINT64_C(0x4731C84FDC793FE1), UINT64_C(0x286E6F4C62351152),
+ UINT64_C(0x2FCF07180F8C6B6E), UINT64_C(0x4090A01BB1C045DD),
+ UINT64_C(0x746F47B058BAEF9A), UINT64_C(0x1B30E0B3E6F6C129),
+ UINT64_C(0x420F87D795576CC9), UINT64_C(0x2D5020D42B1B427A),
+ UINT64_C(0x19AFC77FC261E83D), UINT64_C(0x76F0607C7C2DC68E),
+ UINT64_C(0x715108281194BCB2), UINT64_C(0x1E0EAF2BAFD89201),
+ UINT64_C(0x2AF1488046A23846), UINT64_C(0x45AEEF83F8EE16F5),
+ UINT64_C(0x24B399289CD0CD3E), UINT64_C(0x4BEC3E2B229CE38D),
+ UINT64_C(0x7F13D980CBE649CA), UINT64_C(0x104C7E8375AA6779),
+ UINT64_C(0x17ED16D718131D45), UINT64_C(0x78B2B1D4A65F33F6),
+ UINT64_C(0x4C4D567F4F2599B1), UINT64_C(0x2312F17CF169B702),
+ UINT64_C(0x0B69B486ADF6F7B4), UINT64_C(0x6436138513BAD907),
+ UINT64_C(0x50C9F42EFAC07340), UINT64_C(0x3F96532D448C5DF3),
+ UINT64_C(0x38373B79293527CF), UINT64_C(0x57689C7A9779097C),
+ UINT64_C(0x63977BD17E03A33B), UINT64_C(0x0CC8DCD2C04F8D88),
+ UINT64_C(0x6DD5AA79A4715643), UINT64_C(0x028A0D7A1A3D78F0),
+ UINT64_C(0x3675EAD1F347D2B7), UINT64_C(0x592A4DD24D0BFC04),
+ UINT64_C(0x5E8B258620B28638), UINT64_C(0x31D482859EFEA88B),
+ UINT64_C(0x052B652E778402CC), UINT64_C(0x6A74C22DC9C82C7F),
+ UINT64_C(0xD0C3E175E5155B32), UINT64_C(0xBF9C46765B597581),
+ UINT64_C(0x8B63A1DDB223DFC6), UINT64_C(0xE43C06DE0C6FF175),
+ UINT64_C(0xE39D6E8A61D68B49), UINT64_C(0x8CC2C989DF9AA5FA),
+ UINT64_C(0xB83D2E2236E00FBD), UINT64_C(0xD762892188AC210E),
+ UINT64_C(0xB67FFF8AEC92FAC5), UINT64_C(0xD920588952DED476),
+ UINT64_C(0xEDDFBF22BBA47E31), UINT64_C(0x8280182105E85082),
+ UINT64_C(0x8521707568512ABE), UINT64_C(0xEA7ED776D61D040D),
+ UINT64_C(0xDE8130DD3F67AE4A), UINT64_C(0xB1DE97DE812B80F9),
+ UINT64_C(0x99A5D224DDB4C04F), UINT64_C(0xF6FA752763F8EEFC),
+ UINT64_C(0xC205928C8A8244BB), UINT64_C(0xAD5A358F34CE6A08),
+ UINT64_C(0xAAFB5DDB59771034), UINT64_C(0xC5A4FAD8E73B3E87),
+ UINT64_C(0xF15B1D730E4194C0), UINT64_C(0x9E04BA70B00DBA73),
+ UINT64_C(0xFF19CCDBD43361B8), UINT64_C(0x90466BD86A7F4F0B),
+ UINT64_C(0xA4B98C738305E54C), UINT64_C(0xCBE62B703D49CBFF),
+ UINT64_C(0xCC47432450F0B1C3), UINT64_C(0xA318E427EEBC9F70),
+ UINT64_C(0x97E7038C07C63537), UINT64_C(0xF8B8A48FB98A1B84),
+ UINT64_C(0xE388443C5F7CDAAD), UINT64_C(0x8CD7E33FE130F41E),
+ UINT64_C(0xB8280494084A5E59), UINT64_C(0xD777A397B60670EA),
+ UINT64_C(0xD0D6CBC3DBBF0AD6), UINT64_C(0xBF896CC065F32465),
+ UINT64_C(0x8B768B6B8C898E22), UINT64_C(0xE4292C6832C5A091),
+ UINT64_C(0x85345AC356FB7B5A), UINT64_C(0xEA6BFDC0E8B755E9),
+ UINT64_C(0xDE941A6B01CDFFAE), UINT64_C(0xB1CBBD68BF81D11D),
+ UINT64_C(0xB66AD53CD238AB21), UINT64_C(0xD935723F6C748592),
+ UINT64_C(0xEDCA9594850E2FD5), UINT64_C(0x829532973B420166),
+ UINT64_C(0xAAEE776D67DD41D0), UINT64_C(0xC5B1D06ED9916F63),
+ UINT64_C(0xF14E37C530EBC524), UINT64_C(0x9E1190C68EA7EB97),
+ UINT64_C(0x99B0F892E31E91AB), UINT64_C(0xF6EF5F915D52BF18),
+ UINT64_C(0xC210B83AB428155F), UINT64_C(0xAD4F1F390A643BEC),
+ UINT64_C(0xCC5269926E5AE027), UINT64_C(0xA30DCE91D016CE94),
+ UINT64_C(0x97F2293A396C64D3), UINT64_C(0xF8AD8E3987204A60),
+ UINT64_C(0xFF0CE66DEA99305C), UINT64_C(0x9053416E54D51EEF),
+ UINT64_C(0xA4ACA6C5BDAFB4A8), UINT64_C(0xCBF301C603E39A1B),
+ UINT64_C(0x7144229E2F3EED56), UINT64_C(0x1E1B859D9172C3E5),
+ UINT64_C(0x2AE46236780869A2), UINT64_C(0x45BBC535C6444711),
+ UINT64_C(0x421AAD61ABFD3D2D), UINT64_C(0x2D450A6215B1139E),
+ UINT64_C(0x19BAEDC9FCCBB9D9), UINT64_C(0x76E54ACA4287976A),
+ UINT64_C(0x17F83C6126B94CA1), UINT64_C(0x78A79B6298F56212),
+ UINT64_C(0x4C587CC9718FC855), UINT64_C(0x2307DBCACFC3E6E6),
+ UINT64_C(0x24A6B39EA27A9CDA), UINT64_C(0x4BF9149D1C36B269),
+ UINT64_C(0x7F06F336F54C182E), UINT64_C(0x105954354B00369D),
+ UINT64_C(0x382211CF179F762B), UINT64_C(0x577DB6CCA9D35898),
+ UINT64_C(0x6382516740A9F2DF), UINT64_C(0x0CDDF664FEE5DC6C),
+ UINT64_C(0x0B7C9E30935CA650), UINT64_C(0x642339332D1088E3),
+ UINT64_C(0x50DCDE98C46A22A4), UINT64_C(0x3F83799B7A260C17),
+ UINT64_C(0x5E9E0F301E18D7DC), UINT64_C(0x31C1A833A054F96F),
+ UINT64_C(0x053E4F98492E5328), UINT64_C(0x6A61E89BF7627D9B),
+ UINT64_C(0x6DC080CF9ADB07A7), UINT64_C(0x029F27CC24972914),
+ UINT64_C(0x3660C067CDED8353), UINT64_C(0x593F676473A1ADE0)
+ }, {
+ UINT64_C(0x0000000000000000), UINT64_C(0x0DF1D05C9279E954),
+ UINT64_C(0x1AE2A1B924F3D2A9), UINT64_C(0x171371E5B68A3BFD),
+ UINT64_C(0xB1DA4DDC62497DC1), UINT64_C(0xBC2B9D80F0309495),
+ UINT64_C(0xAB38EC6546BAAF68), UINT64_C(0xA6C93C39D4C3463C),
+ UINT64_C(0xE7AB9517EE3D2210), UINT64_C(0xEA5A454B7C44CB44),
+ UINT64_C(0xFD4934AECACEF0B9), UINT64_C(0xF0B8E4F258B719ED),
+ UINT64_C(0x5671D8CB8C745FD1), UINT64_C(0x5B8008971E0DB685),
+ UINT64_C(0x4C937972A8878D78), UINT64_C(0x4162A92E3AFE642C),
+ UINT64_C(0xCE572B2FDC7B4420), UINT64_C(0xC3A6FB734E02AD74),
+ UINT64_C(0xD4B58A96F8889689), UINT64_C(0xD9445ACA6AF17FDD),
+ UINT64_C(0x7F8D66F3BE3239E1), UINT64_C(0x727CB6AF2C4BD0B5),
+ UINT64_C(0x656FC74A9AC1EB48), UINT64_C(0x689E171608B8021C),
+ UINT64_C(0x29FCBE3832466630), UINT64_C(0x240D6E64A03F8F64),
+ UINT64_C(0x331E1F8116B5B499), UINT64_C(0x3EEFCFDD84CC5DCD),
+ UINT64_C(0x9826F3E4500F1BF1), UINT64_C(0x95D723B8C276F2A5),
+ UINT64_C(0x82C4525D74FCC958), UINT64_C(0x8F358201E685200C),
+ UINT64_C(0x9CAF565EB8F78840), UINT64_C(0x915E86022A8E6114),
+ UINT64_C(0x864DF7E79C045AE9), UINT64_C(0x8BBC27BB0E7DB3BD),
+ UINT64_C(0x2D751B82DABEF581), UINT64_C(0x2084CBDE48C71CD5),
+ UINT64_C(0x3797BA3BFE4D2728), UINT64_C(0x3A666A676C34CE7C),
+ UINT64_C(0x7B04C34956CAAA50), UINT64_C(0x76F51315C4B34304),
+ UINT64_C(0x61E662F0723978F9), UINT64_C(0x6C17B2ACE04091AD),
+ UINT64_C(0xCADE8E953483D791), UINT64_C(0xC72F5EC9A6FA3EC5),
+ UINT64_C(0xD03C2F2C10700538), UINT64_C(0xDDCDFF708209EC6C),
+ UINT64_C(0x52F87D71648CCC60), UINT64_C(0x5F09AD2DF6F52534),
+ UINT64_C(0x481ADCC8407F1EC9), UINT64_C(0x45EB0C94D206F79D),
+ UINT64_C(0xE32230AD06C5B1A1), UINT64_C(0xEED3E0F194BC58F5),
+ UINT64_C(0xF9C0911422366308), UINT64_C(0xF4314148B04F8A5C),
+ UINT64_C(0xB553E8668AB1EE70), UINT64_C(0xB8A2383A18C80724),
+ UINT64_C(0xAFB149DFAE423CD9), UINT64_C(0xA24099833C3BD58D),
+ UINT64_C(0x0489A5BAE8F893B1), UINT64_C(0x097875E67A817AE5),
+ UINT64_C(0x1E6B0403CC0B4118), UINT64_C(0x139AD45F5E72A84C),
+ UINT64_C(0x385FADBC70EF1181), UINT64_C(0x35AE7DE0E296F8D5),
+ UINT64_C(0x22BD0C05541CC328), UINT64_C(0x2F4CDC59C6652A7C),
+ UINT64_C(0x8985E06012A66C40), UINT64_C(0x8474303C80DF8514),
+ UINT64_C(0x936741D93655BEE9), UINT64_C(0x9E969185A42C57BD),
+ UINT64_C(0xDFF438AB9ED23391), UINT64_C(0xD205E8F70CABDAC5),
+ UINT64_C(0xC5169912BA21E138), UINT64_C(0xC8E7494E2858086C),
+ UINT64_C(0x6E2E7577FC9B4E50), UINT64_C(0x63DFA52B6EE2A704),
+ UINT64_C(0x74CCD4CED8689CF9), UINT64_C(0x793D04924A1175AD),
+ UINT64_C(0xF6088693AC9455A1), UINT64_C(0xFBF956CF3EEDBCF5),
+ UINT64_C(0xECEA272A88678708), UINT64_C(0xE11BF7761A1E6E5C),
+ UINT64_C(0x47D2CB4FCEDD2860), UINT64_C(0x4A231B135CA4C134),
+ UINT64_C(0x5D306AF6EA2EFAC9), UINT64_C(0x50C1BAAA7857139D),
+ UINT64_C(0x11A3138442A977B1), UINT64_C(0x1C52C3D8D0D09EE5),
+ UINT64_C(0x0B41B23D665AA518), UINT64_C(0x06B06261F4234C4C),
+ UINT64_C(0xA0795E5820E00A70), UINT64_C(0xAD888E04B299E324),
+ UINT64_C(0xBA9BFFE10413D8D9), UINT64_C(0xB76A2FBD966A318D),
+ UINT64_C(0xA4F0FBE2C81899C1), UINT64_C(0xA9012BBE5A617095),
+ UINT64_C(0xBE125A5BECEB4B68), UINT64_C(0xB3E38A077E92A23C),
+ UINT64_C(0x152AB63EAA51E400), UINT64_C(0x18DB666238280D54),
+ UINT64_C(0x0FC817878EA236A9), UINT64_C(0x0239C7DB1CDBDFFD),
+ UINT64_C(0x435B6EF52625BBD1), UINT64_C(0x4EAABEA9B45C5285),
+ UINT64_C(0x59B9CF4C02D66978), UINT64_C(0x54481F1090AF802C),
+ UINT64_C(0xF2812329446CC610), UINT64_C(0xFF70F375D6152F44),
+ UINT64_C(0xE8638290609F14B9), UINT64_C(0xE59252CCF2E6FDED),
+ UINT64_C(0x6AA7D0CD1463DDE1), UINT64_C(0x67560091861A34B5),
+ UINT64_C(0x7045717430900F48), UINT64_C(0x7DB4A128A2E9E61C),
+ UINT64_C(0xDB7D9D11762AA020), UINT64_C(0xD68C4D4DE4534974),
+ UINT64_C(0xC19F3CA852D97289), UINT64_C(0xCC6EECF4C0A09BDD),
+ UINT64_C(0x8D0C45DAFA5EFFF1), UINT64_C(0x80FD9586682716A5),
+ UINT64_C(0x97EEE463DEAD2D58), UINT64_C(0x9A1F343F4CD4C40C),
+ UINT64_C(0x3CD6080698178230), UINT64_C(0x3127D85A0A6E6B64),
+ UINT64_C(0x2634A9BFBCE45099), UINT64_C(0x2BC579E32E9DB9CD),
+ UINT64_C(0xF5A054D6CA71FB90), UINT64_C(0xF851848A580812C4),
+ UINT64_C(0xEF42F56FEE822939), UINT64_C(0xE2B325337CFBC06D),
+ UINT64_C(0x447A190AA8388651), UINT64_C(0x498BC9563A416F05),
+ UINT64_C(0x5E98B8B38CCB54F8), UINT64_C(0x536968EF1EB2BDAC),
+ UINT64_C(0x120BC1C1244CD980), UINT64_C(0x1FFA119DB63530D4),
+ UINT64_C(0x08E9607800BF0B29), UINT64_C(0x0518B02492C6E27D),
+ UINT64_C(0xA3D18C1D4605A441), UINT64_C(0xAE205C41D47C4D15),
+ UINT64_C(0xB9332DA462F676E8), UINT64_C(0xB4C2FDF8F08F9FBC),
+ UINT64_C(0x3BF77FF9160ABFB0), UINT64_C(0x3606AFA5847356E4),
+ UINT64_C(0x2115DE4032F96D19), UINT64_C(0x2CE40E1CA080844D),
+ UINT64_C(0x8A2D32257443C271), UINT64_C(0x87DCE279E63A2B25),
+ UINT64_C(0x90CF939C50B010D8), UINT64_C(0x9D3E43C0C2C9F98C),
+ UINT64_C(0xDC5CEAEEF8379DA0), UINT64_C(0xD1AD3AB26A4E74F4),
+ UINT64_C(0xC6BE4B57DCC44F09), UINT64_C(0xCB4F9B0B4EBDA65D),
+ UINT64_C(0x6D86A7329A7EE061), UINT64_C(0x6077776E08070935),
+ UINT64_C(0x7764068BBE8D32C8), UINT64_C(0x7A95D6D72CF4DB9C),
+ UINT64_C(0x690F0288728673D0), UINT64_C(0x64FED2D4E0FF9A84),
+ UINT64_C(0x73EDA3315675A179), UINT64_C(0x7E1C736DC40C482D),
+ UINT64_C(0xD8D54F5410CF0E11), UINT64_C(0xD5249F0882B6E745),
+ UINT64_C(0xC237EEED343CDCB8), UINT64_C(0xCFC63EB1A64535EC),
+ UINT64_C(0x8EA4979F9CBB51C0), UINT64_C(0x835547C30EC2B894),
+ UINT64_C(0x94463626B8488369), UINT64_C(0x99B7E67A2A316A3D),
+ UINT64_C(0x3F7EDA43FEF22C01), UINT64_C(0x328F0A1F6C8BC555),
+ UINT64_C(0x259C7BFADA01FEA8), UINT64_C(0x286DABA6487817FC),
+ UINT64_C(0xA75829A7AEFD37F0), UINT64_C(0xAAA9F9FB3C84DEA4),
+ UINT64_C(0xBDBA881E8A0EE559), UINT64_C(0xB04B584218770C0D),
+ UINT64_C(0x1682647BCCB44A31), UINT64_C(0x1B73B4275ECDA365),
+ UINT64_C(0x0C60C5C2E8479898), UINT64_C(0x0191159E7A3E71CC),
+ UINT64_C(0x40F3BCB040C015E0), UINT64_C(0x4D026CECD2B9FCB4),
+ UINT64_C(0x5A111D096433C749), UINT64_C(0x57E0CD55F64A2E1D),
+ UINT64_C(0xF129F16C22896821), UINT64_C(0xFCD82130B0F08175),
+ UINT64_C(0xEBCB50D5067ABA88), UINT64_C(0xE63A8089940353DC),
+ UINT64_C(0xCDFFF96ABA9EEA11), UINT64_C(0xC00E293628E70345),
+ UINT64_C(0xD71D58D39E6D38B8), UINT64_C(0xDAEC888F0C14D1EC),
+ UINT64_C(0x7C25B4B6D8D797D0), UINT64_C(0x71D464EA4AAE7E84),
+ UINT64_C(0x66C7150FFC244579), UINT64_C(0x6B36C5536E5DAC2D),
+ UINT64_C(0x2A546C7D54A3C801), UINT64_C(0x27A5BC21C6DA2155),
+ UINT64_C(0x30B6CDC470501AA8), UINT64_C(0x3D471D98E229F3FC),
+ UINT64_C(0x9B8E21A136EAB5C0), UINT64_C(0x967FF1FDA4935C94),
+ UINT64_C(0x816C801812196769), UINT64_C(0x8C9D504480608E3D),
+ UINT64_C(0x03A8D24566E5AE31), UINT64_C(0x0E590219F49C4765),
+ UINT64_C(0x194A73FC42167C98), UINT64_C(0x14BBA3A0D06F95CC),
+ UINT64_C(0xB2729F9904ACD3F0), UINT64_C(0xBF834FC596D53AA4),
+ UINT64_C(0xA8903E20205F0159), UINT64_C(0xA561EE7CB226E80D),
+ UINT64_C(0xE403475288D88C21), UINT64_C(0xE9F2970E1AA16575),
+ UINT64_C(0xFEE1E6EBAC2B5E88), UINT64_C(0xF31036B73E52B7DC),
+ UINT64_C(0x55D90A8EEA91F1E0), UINT64_C(0x5828DAD278E818B4),
+ UINT64_C(0x4F3BAB37CE622349), UINT64_C(0x42CA7B6B5C1BCA1D),
+ UINT64_C(0x5150AF3402696251), UINT64_C(0x5CA17F6890108B05),
+ UINT64_C(0x4BB20E8D269AB0F8), UINT64_C(0x4643DED1B4E359AC),
+ UINT64_C(0xE08AE2E860201F90), UINT64_C(0xED7B32B4F259F6C4),
+ UINT64_C(0xFA68435144D3CD39), UINT64_C(0xF799930DD6AA246D),
+ UINT64_C(0xB6FB3A23EC544041), UINT64_C(0xBB0AEA7F7E2DA915),
+ UINT64_C(0xAC199B9AC8A792E8), UINT64_C(0xA1E84BC65ADE7BBC),
+ UINT64_C(0x072177FF8E1D3D80), UINT64_C(0x0AD0A7A31C64D4D4),
+ UINT64_C(0x1DC3D646AAEEEF29), UINT64_C(0x1032061A3897067D),
+ UINT64_C(0x9F07841BDE122671), UINT64_C(0x92F654474C6BCF25),
+ UINT64_C(0x85E525A2FAE1F4D8), UINT64_C(0x8814F5FE68981D8C),
+ UINT64_C(0x2EDDC9C7BC5B5BB0), UINT64_C(0x232C199B2E22B2E4),
+ UINT64_C(0x343F687E98A88919), UINT64_C(0x39CEB8220AD1604D),
+ UINT64_C(0x78AC110C302F0461), UINT64_C(0x755DC150A256ED35),
+ UINT64_C(0x624EB0B514DCD6C8), UINT64_C(0x6FBF60E986A53F9C),
+ UINT64_C(0xC9765CD0526679A0), UINT64_C(0xC4878C8CC01F90F4),
+ UINT64_C(0xD394FD697695AB09), UINT64_C(0xDE652D35E4EC425D)
+ }, {
+ UINT64_C(0x0000000000000000), UINT64_C(0xCB6D6A914AE10B3F),
+ UINT64_C(0x96DBD42295C2177E), UINT64_C(0x5DB6BEB3DF231C41),
+ UINT64_C(0x2CB7A9452A852FFC), UINT64_C(0xE7DAC3D4606424C3),
+ UINT64_C(0xBA6C7D67BF473882), UINT64_C(0x710117F6F5A633BD),
+ UINT64_C(0xDD705D247FA5876A), UINT64_C(0x161D37B535448C55),
+ UINT64_C(0x4BAB8906EA679014), UINT64_C(0x80C6E397A0869B2B),
+ UINT64_C(0xF1C7F4615520A896), UINT64_C(0x3AAA9EF01FC1A3A9),
+ UINT64_C(0x671C2043C0E2BFE8), UINT64_C(0xAC714AD28A03B4D7),
+ UINT64_C(0xBAE1BA48FE4A0FD5), UINT64_C(0x718CD0D9B4AB04EA),
+ UINT64_C(0x2C3A6E6A6B8818AB), UINT64_C(0xE75704FB21691394),
+ UINT64_C(0x9656130DD4CF2029), UINT64_C(0x5D3B799C9E2E2B16),
+ UINT64_C(0x008DC72F410D3757), UINT64_C(0xCBE0ADBE0BEC3C68),
+ UINT64_C(0x6791E76C81EF88BF), UINT64_C(0xACFC8DFDCB0E8380),
+ UINT64_C(0xF14A334E142D9FC1), UINT64_C(0x3A2759DF5ECC94FE),
+ UINT64_C(0x4B264E29AB6AA743), UINT64_C(0x804B24B8E18BAC7C),
+ UINT64_C(0xDDFD9A0B3EA8B03D), UINT64_C(0x1690F09A7449BB02),
+ UINT64_C(0xF1DD7B3ED73AC638), UINT64_C(0x3AB011AF9DDBCD07),
+ UINT64_C(0x6706AF1C42F8D146), UINT64_C(0xAC6BC58D0819DA79),
+ UINT64_C(0xDD6AD27BFDBFE9C4), UINT64_C(0x1607B8EAB75EE2FB),
+ UINT64_C(0x4BB10659687DFEBA), UINT64_C(0x80DC6CC8229CF585),
+ UINT64_C(0x2CAD261AA89F4152), UINT64_C(0xE7C04C8BE27E4A6D),
+ UINT64_C(0xBA76F2383D5D562C), UINT64_C(0x711B98A977BC5D13),
+ UINT64_C(0x001A8F5F821A6EAE), UINT64_C(0xCB77E5CEC8FB6591),
+ UINT64_C(0x96C15B7D17D879D0), UINT64_C(0x5DAC31EC5D3972EF),
+ UINT64_C(0x4B3CC1762970C9ED), UINT64_C(0x8051ABE76391C2D2),
+ UINT64_C(0xDDE71554BCB2DE93), UINT64_C(0x168A7FC5F653D5AC),
+ UINT64_C(0x678B683303F5E611), UINT64_C(0xACE602A24914ED2E),
+ UINT64_C(0xF150BC119637F16F), UINT64_C(0x3A3DD680DCD6FA50),
+ UINT64_C(0x964C9C5256D54E87), UINT64_C(0x5D21F6C31C3445B8),
+ UINT64_C(0x00974870C31759F9), UINT64_C(0xCBFA22E189F652C6),
+ UINT64_C(0xBAFB35177C50617B), UINT64_C(0x71965F8636B16A44),
+ UINT64_C(0x2C20E135E9927605), UINT64_C(0xE74D8BA4A3737D3A),
+ UINT64_C(0xE2BBF77CAE758C71), UINT64_C(0x29D69DEDE494874E),
+ UINT64_C(0x7460235E3BB79B0F), UINT64_C(0xBF0D49CF71569030),
+ UINT64_C(0xCE0C5E3984F0A38D), UINT64_C(0x056134A8CE11A8B2),
+ UINT64_C(0x58D78A1B1132B4F3), UINT64_C(0x93BAE08A5BD3BFCC),
+ UINT64_C(0x3FCBAA58D1D00B1B), UINT64_C(0xF4A6C0C99B310024),
+ UINT64_C(0xA9107E7A44121C65), UINT64_C(0x627D14EB0EF3175A),
+ UINT64_C(0x137C031DFB5524E7), UINT64_C(0xD811698CB1B42FD8),
+ UINT64_C(0x85A7D73F6E973399), UINT64_C(0x4ECABDAE247638A6),
+ UINT64_C(0x585A4D34503F83A4), UINT64_C(0x933727A51ADE889B),
+ UINT64_C(0xCE819916C5FD94DA), UINT64_C(0x05ECF3878F1C9FE5),
+ UINT64_C(0x74EDE4717ABAAC58), UINT64_C(0xBF808EE0305BA767),
+ UINT64_C(0xE2363053EF78BB26), UINT64_C(0x295B5AC2A599B019),
+ UINT64_C(0x852A10102F9A04CE), UINT64_C(0x4E477A81657B0FF1),
+ UINT64_C(0x13F1C432BA5813B0), UINT64_C(0xD89CAEA3F0B9188F),
+ UINT64_C(0xA99DB955051F2B32), UINT64_C(0x62F0D3C44FFE200D),
+ UINT64_C(0x3F466D7790DD3C4C), UINT64_C(0xF42B07E6DA3C3773),
+ UINT64_C(0x13668C42794F4A49), UINT64_C(0xD80BE6D333AE4176),
+ UINT64_C(0x85BD5860EC8D5D37), UINT64_C(0x4ED032F1A66C5608),
+ UINT64_C(0x3FD1250753CA65B5), UINT64_C(0xF4BC4F96192B6E8A),
+ UINT64_C(0xA90AF125C60872CB), UINT64_C(0x62679BB48CE979F4),
+ UINT64_C(0xCE16D16606EACD23), UINT64_C(0x057BBBF74C0BC61C),
+ UINT64_C(0x58CD05449328DA5D), UINT64_C(0x93A06FD5D9C9D162),
+ UINT64_C(0xE2A178232C6FE2DF), UINT64_C(0x29CC12B2668EE9E0),
+ UINT64_C(0x747AAC01B9ADF5A1), UINT64_C(0xBF17C690F34CFE9E),
+ UINT64_C(0xA987360A8705459C), UINT64_C(0x62EA5C9BCDE44EA3),
+ UINT64_C(0x3F5CE22812C752E2), UINT64_C(0xF43188B9582659DD),
+ UINT64_C(0x85309F4FAD806A60), UINT64_C(0x4E5DF5DEE761615F),
+ UINT64_C(0x13EB4B6D38427D1E), UINT64_C(0xD88621FC72A37621),
+ UINT64_C(0x74F76B2EF8A0C2F6), UINT64_C(0xBF9A01BFB241C9C9),
+ UINT64_C(0xE22CBF0C6D62D588), UINT64_C(0x2941D59D2783DEB7),
+ UINT64_C(0x5840C26BD225ED0A), UINT64_C(0x932DA8FA98C4E635),
+ UINT64_C(0xCE9B164947E7FA74), UINT64_C(0x05F67CD80D06F14B),
+ UINT64_C(0xC477EFF95CEB18E3), UINT64_C(0x0F1A8568160A13DC),
+ UINT64_C(0x52AC3BDBC9290F9D), UINT64_C(0x99C1514A83C804A2),
+ UINT64_C(0xE8C046BC766E371F), UINT64_C(0x23AD2C2D3C8F3C20),
+ UINT64_C(0x7E1B929EE3AC2061), UINT64_C(0xB576F80FA94D2B5E),
+ UINT64_C(0x1907B2DD234E9F89), UINT64_C(0xD26AD84C69AF94B6),
+ UINT64_C(0x8FDC66FFB68C88F7), UINT64_C(0x44B10C6EFC6D83C8),
+ UINT64_C(0x35B01B9809CBB075), UINT64_C(0xFEDD7109432ABB4A),
+ UINT64_C(0xA36BCFBA9C09A70B), UINT64_C(0x6806A52BD6E8AC34),
+ UINT64_C(0x7E9655B1A2A11736), UINT64_C(0xB5FB3F20E8401C09),
+ UINT64_C(0xE84D819337630048), UINT64_C(0x2320EB027D820B77),
+ UINT64_C(0x5221FCF4882438CA), UINT64_C(0x994C9665C2C533F5),
+ UINT64_C(0xC4FA28D61DE62FB4), UINT64_C(0x0F9742475707248B),
+ UINT64_C(0xA3E60895DD04905C), UINT64_C(0x688B620497E59B63),
+ UINT64_C(0x353DDCB748C68722), UINT64_C(0xFE50B62602278C1D),
+ UINT64_C(0x8F51A1D0F781BFA0), UINT64_C(0x443CCB41BD60B49F),
+ UINT64_C(0x198A75F26243A8DE), UINT64_C(0xD2E71F6328A2A3E1),
+ UINT64_C(0x35AA94C78BD1DEDB), UINT64_C(0xFEC7FE56C130D5E4),
+ UINT64_C(0xA37140E51E13C9A5), UINT64_C(0x681C2A7454F2C29A),
+ UINT64_C(0x191D3D82A154F127), UINT64_C(0xD2705713EBB5FA18),
+ UINT64_C(0x8FC6E9A03496E659), UINT64_C(0x44AB83317E77ED66),
+ UINT64_C(0xE8DAC9E3F47459B1), UINT64_C(0x23B7A372BE95528E),
+ UINT64_C(0x7E011DC161B64ECF), UINT64_C(0xB56C77502B5745F0),
+ UINT64_C(0xC46D60A6DEF1764D), UINT64_C(0x0F000A3794107D72),
+ UINT64_C(0x52B6B4844B336133), UINT64_C(0x99DBDE1501D26A0C),
+ UINT64_C(0x8F4B2E8F759BD10E), UINT64_C(0x4426441E3F7ADA31),
+ UINT64_C(0x1990FAADE059C670), UINT64_C(0xD2FD903CAAB8CD4F),
+ UINT64_C(0xA3FC87CA5F1EFEF2), UINT64_C(0x6891ED5B15FFF5CD),
+ UINT64_C(0x352753E8CADCE98C), UINT64_C(0xFE4A3979803DE2B3),
+ UINT64_C(0x523B73AB0A3E5664), UINT64_C(0x9956193A40DF5D5B),
+ UINT64_C(0xC4E0A7899FFC411A), UINT64_C(0x0F8DCD18D51D4A25),
+ UINT64_C(0x7E8CDAEE20BB7998), UINT64_C(0xB5E1B07F6A5A72A7),
+ UINT64_C(0xE8570ECCB5796EE6), UINT64_C(0x233A645DFF9865D9),
+ UINT64_C(0x26CC1885F29E9492), UINT64_C(0xEDA17214B87F9FAD),
+ UINT64_C(0xB017CCA7675C83EC), UINT64_C(0x7B7AA6362DBD88D3),
+ UINT64_C(0x0A7BB1C0D81BBB6E), UINT64_C(0xC116DB5192FAB051),
+ UINT64_C(0x9CA065E24DD9AC10), UINT64_C(0x57CD0F730738A72F),
+ UINT64_C(0xFBBC45A18D3B13F8), UINT64_C(0x30D12F30C7DA18C7),
+ UINT64_C(0x6D67918318F90486), UINT64_C(0xA60AFB1252180FB9),
+ UINT64_C(0xD70BECE4A7BE3C04), UINT64_C(0x1C668675ED5F373B),
+ UINT64_C(0x41D038C6327C2B7A), UINT64_C(0x8ABD5257789D2045),
+ UINT64_C(0x9C2DA2CD0CD49B47), UINT64_C(0x5740C85C46359078),
+ UINT64_C(0x0AF676EF99168C39), UINT64_C(0xC19B1C7ED3F78706),
+ UINT64_C(0xB09A0B882651B4BB), UINT64_C(0x7BF761196CB0BF84),
+ UINT64_C(0x2641DFAAB393A3C5), UINT64_C(0xED2CB53BF972A8FA),
+ UINT64_C(0x415DFFE973711C2D), UINT64_C(0x8A30957839901712),
+ UINT64_C(0xD7862BCBE6B30B53), UINT64_C(0x1CEB415AAC52006C),
+ UINT64_C(0x6DEA56AC59F433D1), UINT64_C(0xA6873C3D131538EE),
+ UINT64_C(0xFB31828ECC3624AF), UINT64_C(0x305CE81F86D72F90),
+ UINT64_C(0xD71163BB25A452AA), UINT64_C(0x1C7C092A6F455995),
+ UINT64_C(0x41CAB799B06645D4), UINT64_C(0x8AA7DD08FA874EEB),
+ UINT64_C(0xFBA6CAFE0F217D56), UINT64_C(0x30CBA06F45C07669),
+ UINT64_C(0x6D7D1EDC9AE36A28), UINT64_C(0xA610744DD0026117),
+ UINT64_C(0x0A613E9F5A01D5C0), UINT64_C(0xC10C540E10E0DEFF),
+ UINT64_C(0x9CBAEABDCFC3C2BE), UINT64_C(0x57D7802C8522C981),
+ UINT64_C(0x26D697DA7084FA3C), UINT64_C(0xEDBBFD4B3A65F103),
+ UINT64_C(0xB00D43F8E546ED42), UINT64_C(0x7B602969AFA7E67D),
+ UINT64_C(0x6DF0D9F3DBEE5D7F), UINT64_C(0xA69DB362910F5640),
+ UINT64_C(0xFB2B0DD14E2C4A01), UINT64_C(0x3046674004CD413E),
+ UINT64_C(0x414770B6F16B7283), UINT64_C(0x8A2A1A27BB8A79BC),
+ UINT64_C(0xD79CA49464A965FD), UINT64_C(0x1CF1CE052E486EC2),
+ UINT64_C(0xB08084D7A44BDA15), UINT64_C(0x7BEDEE46EEAAD12A),
+ UINT64_C(0x265B50F53189CD6B), UINT64_C(0xED363A647B68C654),
+ UINT64_C(0x9C372D928ECEF5E9), UINT64_C(0x575A4703C42FFED6),
+ UINT64_C(0x0AECF9B01B0CE297), UINT64_C(0xC181932151EDE9A8)
+ }, {
+ UINT64_C(0x0000000000000000), UINT64_C(0xDCA12C225E8AEE1D),
+ UINT64_C(0xB8435944BC14DD3B), UINT64_C(0x64E27566E29E3326),
+ UINT64_C(0x7087B2887829BA77), UINT64_C(0xAC269EAA26A3546A),
+ UINT64_C(0xC8C4EBCCC43D674C), UINT64_C(0x1465C7EE9AB78951),
+ UINT64_C(0xE00E6511F15274EF), UINT64_C(0x3CAF4933AFD89AF2),
+ UINT64_C(0x584D3C554D46A9D4), UINT64_C(0x84EC107713CC47C9),
+ UINT64_C(0x9089D799897BCE98), UINT64_C(0x4C28FBBBD7F12085),
+ UINT64_C(0x28CA8EDD356F13A3), UINT64_C(0xF46BA2FF6BE5FDBE),
+ UINT64_C(0x4503C48DC90A304C), UINT64_C(0x99A2E8AF9780DE51),
+ UINT64_C(0xFD409DC9751EED77), UINT64_C(0x21E1B1EB2B94036A),
+ UINT64_C(0x35847605B1238A3B), UINT64_C(0xE9255A27EFA96426),
+ UINT64_C(0x8DC72F410D375700), UINT64_C(0x5166036353BDB91D),
+ UINT64_C(0xA50DA19C385844A3), UINT64_C(0x79AC8DBE66D2AABE),
+ UINT64_C(0x1D4EF8D8844C9998), UINT64_C(0xC1EFD4FADAC67785),
+ UINT64_C(0xD58A13144071FED4), UINT64_C(0x092B3F361EFB10C9),
+ UINT64_C(0x6DC94A50FC6523EF), UINT64_C(0xB1686672A2EFCDF2),
+ UINT64_C(0x8A06881B93156098), UINT64_C(0x56A7A439CD9F8E85),
+ UINT64_C(0x3245D15F2F01BDA3), UINT64_C(0xEEE4FD7D718B53BE),
+ UINT64_C(0xFA813A93EB3CDAEF), UINT64_C(0x262016B1B5B634F2),
+ UINT64_C(0x42C263D7572807D4), UINT64_C(0x9E634FF509A2E9C9),
+ UINT64_C(0x6A08ED0A62471477), UINT64_C(0xB6A9C1283CCDFA6A),
+ UINT64_C(0xD24BB44EDE53C94C), UINT64_C(0x0EEA986C80D92751),
+ UINT64_C(0x1A8F5F821A6EAE00), UINT64_C(0xC62E73A044E4401D),
+ UINT64_C(0xA2CC06C6A67A733B), UINT64_C(0x7E6D2AE4F8F09D26),
+ UINT64_C(0xCF054C965A1F50D4), UINT64_C(0x13A460B40495BEC9),
+ UINT64_C(0x774615D2E60B8DEF), UINT64_C(0xABE739F0B88163F2),
+ UINT64_C(0xBF82FE1E2236EAA3), UINT64_C(0x6323D23C7CBC04BE),
+ UINT64_C(0x07C1A75A9E223798), UINT64_C(0xDB608B78C0A8D985),
+ UINT64_C(0x2F0B2987AB4D243B), UINT64_C(0xF3AA05A5F5C7CA26),
+ UINT64_C(0x974870C31759F900), UINT64_C(0x4BE95CE149D3171D),
+ UINT64_C(0x5F8C9B0FD3649E4C), UINT64_C(0x832DB72D8DEE7051),
+ UINT64_C(0xE7CFC24B6F704377), UINT64_C(0x3B6EEE6931FAAD6A),
+ UINT64_C(0x91131E980D8418A2), UINT64_C(0x4DB232BA530EF6BF),
+ UINT64_C(0x295047DCB190C599), UINT64_C(0xF5F16BFEEF1A2B84),
+ UINT64_C(0xE194AC1075ADA2D5), UINT64_C(0x3D3580322B274CC8),
+ UINT64_C(0x59D7F554C9B97FEE), UINT64_C(0x8576D976973391F3),
+ UINT64_C(0x711D7B89FCD66C4D), UINT64_C(0xADBC57ABA25C8250),
+ UINT64_C(0xC95E22CD40C2B176), UINT64_C(0x15FF0EEF1E485F6B),
+ UINT64_C(0x019AC90184FFD63A), UINT64_C(0xDD3BE523DA753827),
+ UINT64_C(0xB9D9904538EB0B01), UINT64_C(0x6578BC676661E51C),
+ UINT64_C(0xD410DA15C48E28EE), UINT64_C(0x08B1F6379A04C6F3),
+ UINT64_C(0x6C538351789AF5D5), UINT64_C(0xB0F2AF7326101BC8),
+ UINT64_C(0xA497689DBCA79299), UINT64_C(0x783644BFE22D7C84),
+ UINT64_C(0x1CD431D900B34FA2), UINT64_C(0xC0751DFB5E39A1BF),
+ UINT64_C(0x341EBF0435DC5C01), UINT64_C(0xE8BF93266B56B21C),
+ UINT64_C(0x8C5DE64089C8813A), UINT64_C(0x50FCCA62D7426F27),
+ UINT64_C(0x44990D8C4DF5E676), UINT64_C(0x983821AE137F086B),
+ UINT64_C(0xFCDA54C8F1E13B4D), UINT64_C(0x207B78EAAF6BD550),
+ UINT64_C(0x1B1596839E91783A), UINT64_C(0xC7B4BAA1C01B9627),
+ UINT64_C(0xA356CFC72285A501), UINT64_C(0x7FF7E3E57C0F4B1C),
+ UINT64_C(0x6B92240BE6B8C24D), UINT64_C(0xB7330829B8322C50),
+ UINT64_C(0xD3D17D4F5AAC1F76), UINT64_C(0x0F70516D0426F16B),
+ UINT64_C(0xFB1BF3926FC30CD5), UINT64_C(0x27BADFB03149E2C8),
+ UINT64_C(0x4358AAD6D3D7D1EE), UINT64_C(0x9FF986F48D5D3FF3),
+ UINT64_C(0x8B9C411A17EAB6A2), UINT64_C(0x573D6D38496058BF),
+ UINT64_C(0x33DF185EABFE6B99), UINT64_C(0xEF7E347CF5748584),
+ UINT64_C(0x5E16520E579B4876), UINT64_C(0x82B77E2C0911A66B),
+ UINT64_C(0xE6550B4AEB8F954D), UINT64_C(0x3AF42768B5057B50),
+ UINT64_C(0x2E91E0862FB2F201), UINT64_C(0xF230CCA471381C1C),
+ UINT64_C(0x96D2B9C293A62F3A), UINT64_C(0x4A7395E0CD2CC127),
+ UINT64_C(0xBE18371FA6C93C99), UINT64_C(0x62B91B3DF843D284),
+ UINT64_C(0x065B6E5B1ADDE1A2), UINT64_C(0xDAFA427944570FBF),
+ UINT64_C(0xCE9F8597DEE086EE), UINT64_C(0x123EA9B5806A68F3),
+ UINT64_C(0x76DCDCD362F45BD5), UINT64_C(0xAA7DF0F13C7EB5C8),
+ UINT64_C(0xA739329F30A7E9D6), UINT64_C(0x7B981EBD6E2D07CB),
+ UINT64_C(0x1F7A6BDB8CB334ED), UINT64_C(0xC3DB47F9D239DAF0),
+ UINT64_C(0xD7BE8017488E53A1), UINT64_C(0x0B1FAC351604BDBC),
+ UINT64_C(0x6FFDD953F49A8E9A), UINT64_C(0xB35CF571AA106087),
+ UINT64_C(0x4737578EC1F59D39), UINT64_C(0x9B967BAC9F7F7324),
+ UINT64_C(0xFF740ECA7DE14002), UINT64_C(0x23D522E8236BAE1F),
+ UINT64_C(0x37B0E506B9DC274E), UINT64_C(0xEB11C924E756C953),
+ UINT64_C(0x8FF3BC4205C8FA75), UINT64_C(0x535290605B421468),
+ UINT64_C(0xE23AF612F9ADD99A), UINT64_C(0x3E9BDA30A7273787),
+ UINT64_C(0x5A79AF5645B904A1), UINT64_C(0x86D883741B33EABC),
+ UINT64_C(0x92BD449A818463ED), UINT64_C(0x4E1C68B8DF0E8DF0),
+ UINT64_C(0x2AFE1DDE3D90BED6), UINT64_C(0xF65F31FC631A50CB),
+ UINT64_C(0x0234930308FFAD75), UINT64_C(0xDE95BF2156754368),
+ UINT64_C(0xBA77CA47B4EB704E), UINT64_C(0x66D6E665EA619E53),
+ UINT64_C(0x72B3218B70D61702), UINT64_C(0xAE120DA92E5CF91F),
+ UINT64_C(0xCAF078CFCCC2CA39), UINT64_C(0x165154ED92482424),
+ UINT64_C(0x2D3FBA84A3B2894E), UINT64_C(0xF19E96A6FD386753),
+ UINT64_C(0x957CE3C01FA65475), UINT64_C(0x49DDCFE2412CBA68),
+ UINT64_C(0x5DB8080CDB9B3339), UINT64_C(0x8119242E8511DD24),
+ UINT64_C(0xE5FB5148678FEE02), UINT64_C(0x395A7D6A3905001F),
+ UINT64_C(0xCD31DF9552E0FDA1), UINT64_C(0x1190F3B70C6A13BC),
+ UINT64_C(0x757286D1EEF4209A), UINT64_C(0xA9D3AAF3B07ECE87),
+ UINT64_C(0xBDB66D1D2AC947D6), UINT64_C(0x6117413F7443A9CB),
+ UINT64_C(0x05F5345996DD9AED), UINT64_C(0xD954187BC85774F0),
+ UINT64_C(0x683C7E096AB8B902), UINT64_C(0xB49D522B3432571F),
+ UINT64_C(0xD07F274DD6AC6439), UINT64_C(0x0CDE0B6F88268A24),
+ UINT64_C(0x18BBCC8112910375), UINT64_C(0xC41AE0A34C1BED68),
+ UINT64_C(0xA0F895C5AE85DE4E), UINT64_C(0x7C59B9E7F00F3053),
+ UINT64_C(0x88321B189BEACDED), UINT64_C(0x5493373AC56023F0),
+ UINT64_C(0x3071425C27FE10D6), UINT64_C(0xECD06E7E7974FECB),
+ UINT64_C(0xF8B5A990E3C3779A), UINT64_C(0x241485B2BD499987),
+ UINT64_C(0x40F6F0D45FD7AAA1), UINT64_C(0x9C57DCF6015D44BC),
+ UINT64_C(0x362A2C073D23F174), UINT64_C(0xEA8B002563A91F69),
+ UINT64_C(0x8E69754381372C4F), UINT64_C(0x52C85961DFBDC252),
+ UINT64_C(0x46AD9E8F450A4B03), UINT64_C(0x9A0CB2AD1B80A51E),
+ UINT64_C(0xFEEEC7CBF91E9638), UINT64_C(0x224FEBE9A7947825),
+ UINT64_C(0xD6244916CC71859B), UINT64_C(0x0A85653492FB6B86),
+ UINT64_C(0x6E671052706558A0), UINT64_C(0xB2C63C702EEFB6BD),
+ UINT64_C(0xA6A3FB9EB4583FEC), UINT64_C(0x7A02D7BCEAD2D1F1),
+ UINT64_C(0x1EE0A2DA084CE2D7), UINT64_C(0xC2418EF856C60CCA),
+ UINT64_C(0x7329E88AF429C138), UINT64_C(0xAF88C4A8AAA32F25),
+ UINT64_C(0xCB6AB1CE483D1C03), UINT64_C(0x17CB9DEC16B7F21E),
+ UINT64_C(0x03AE5A028C007B4F), UINT64_C(0xDF0F7620D28A9552),
+ UINT64_C(0xBBED03463014A674), UINT64_C(0x674C2F646E9E4869),
+ UINT64_C(0x93278D9B057BB5D7), UINT64_C(0x4F86A1B95BF15BCA),
+ UINT64_C(0x2B64D4DFB96F68EC), UINT64_C(0xF7C5F8FDE7E586F1),
+ UINT64_C(0xE3A03F137D520FA0), UINT64_C(0x3F01133123D8E1BD),
+ UINT64_C(0x5BE36657C146D29B), UINT64_C(0x87424A759FCC3C86),
+ UINT64_C(0xBC2CA41CAE3691EC), UINT64_C(0x608D883EF0BC7FF1),
+ UINT64_C(0x046FFD5812224CD7), UINT64_C(0xD8CED17A4CA8A2CA),
+ UINT64_C(0xCCAB1694D61F2B9B), UINT64_C(0x100A3AB68895C586),
+ UINT64_C(0x74E84FD06A0BF6A0), UINT64_C(0xA84963F2348118BD),
+ UINT64_C(0x5C22C10D5F64E503), UINT64_C(0x8083ED2F01EE0B1E),
+ UINT64_C(0xE4619849E3703838), UINT64_C(0x38C0B46BBDFAD625),
+ UINT64_C(0x2CA57385274D5F74), UINT64_C(0xF0045FA779C7B169),
+ UINT64_C(0x94E62AC19B59824F), UINT64_C(0x484706E3C5D36C52),
+ UINT64_C(0xF92F6091673CA1A0), UINT64_C(0x258E4CB339B64FBD),
+ UINT64_C(0x416C39D5DB287C9B), UINT64_C(0x9DCD15F785A29286),
+ UINT64_C(0x89A8D2191F151BD7), UINT64_C(0x5509FE3B419FF5CA),
+ UINT64_C(0x31EB8B5DA301C6EC), UINT64_C(0xED4AA77FFD8B28F1),
+ UINT64_C(0x19210580966ED54F), UINT64_C(0xC58029A2C8E43B52),
+ UINT64_C(0xA1625CC42A7A0874), UINT64_C(0x7DC370E674F0E669),
+ UINT64_C(0x69A6B708EE476F38), UINT64_C(0xB5079B2AB0CD8125),
+ UINT64_C(0xD1E5EE4C5253B203), UINT64_C(0x0D44C26E0CD95C1E)
+ }
+};
diff --git a/src/liblzma/check/crc64_table_le.h b/src/liblzma/check/crc64_table_le.h
new file mode 100644
index 0000000..3047ea1
--- /dev/null
+++ b/src/liblzma/check/crc64_table_le.h
@@ -0,0 +1,523 @@
+/* This file has been automatically generated by crc64_tablegen.c. */
+
+#include <inttypes.h>
+
+const uint64_t lzma_crc64_table[4][256] = {
+ {
+ UINT64_C(0x0000000000000000), UINT64_C(0xB32E4CBE03A75F6F),
+ UINT64_C(0xF4843657A840A05B), UINT64_C(0x47AA7AE9ABE7FF34),
+ UINT64_C(0x7BD0C384FF8F5E33), UINT64_C(0xC8FE8F3AFC28015C),
+ UINT64_C(0x8F54F5D357CFFE68), UINT64_C(0x3C7AB96D5468A107),
+ UINT64_C(0xF7A18709FF1EBC66), UINT64_C(0x448FCBB7FCB9E309),
+ UINT64_C(0x0325B15E575E1C3D), UINT64_C(0xB00BFDE054F94352),
+ UINT64_C(0x8C71448D0091E255), UINT64_C(0x3F5F08330336BD3A),
+ UINT64_C(0x78F572DAA8D1420E), UINT64_C(0xCBDB3E64AB761D61),
+ UINT64_C(0x7D9BA13851336649), UINT64_C(0xCEB5ED8652943926),
+ UINT64_C(0x891F976FF973C612), UINT64_C(0x3A31DBD1FAD4997D),
+ UINT64_C(0x064B62BCAEBC387A), UINT64_C(0xB5652E02AD1B6715),
+ UINT64_C(0xF2CF54EB06FC9821), UINT64_C(0x41E11855055BC74E),
+ UINT64_C(0x8A3A2631AE2DDA2F), UINT64_C(0x39146A8FAD8A8540),
+ UINT64_C(0x7EBE1066066D7A74), UINT64_C(0xCD905CD805CA251B),
+ UINT64_C(0xF1EAE5B551A2841C), UINT64_C(0x42C4A90B5205DB73),
+ UINT64_C(0x056ED3E2F9E22447), UINT64_C(0xB6409F5CFA457B28),
+ UINT64_C(0xFB374270A266CC92), UINT64_C(0x48190ECEA1C193FD),
+ UINT64_C(0x0FB374270A266CC9), UINT64_C(0xBC9D3899098133A6),
+ UINT64_C(0x80E781F45DE992A1), UINT64_C(0x33C9CD4A5E4ECDCE),
+ UINT64_C(0x7463B7A3F5A932FA), UINT64_C(0xC74DFB1DF60E6D95),
+ UINT64_C(0x0C96C5795D7870F4), UINT64_C(0xBFB889C75EDF2F9B),
+ UINT64_C(0xF812F32EF538D0AF), UINT64_C(0x4B3CBF90F69F8FC0),
+ UINT64_C(0x774606FDA2F72EC7), UINT64_C(0xC4684A43A15071A8),
+ UINT64_C(0x83C230AA0AB78E9C), UINT64_C(0x30EC7C140910D1F3),
+ UINT64_C(0x86ACE348F355AADB), UINT64_C(0x3582AFF6F0F2F5B4),
+ UINT64_C(0x7228D51F5B150A80), UINT64_C(0xC10699A158B255EF),
+ UINT64_C(0xFD7C20CC0CDAF4E8), UINT64_C(0x4E526C720F7DAB87),
+ UINT64_C(0x09F8169BA49A54B3), UINT64_C(0xBAD65A25A73D0BDC),
+ UINT64_C(0x710D64410C4B16BD), UINT64_C(0xC22328FF0FEC49D2),
+ UINT64_C(0x85895216A40BB6E6), UINT64_C(0x36A71EA8A7ACE989),
+ UINT64_C(0x0ADDA7C5F3C4488E), UINT64_C(0xB9F3EB7BF06317E1),
+ UINT64_C(0xFE5991925B84E8D5), UINT64_C(0x4D77DD2C5823B7BA),
+ UINT64_C(0x64B62BCAEBC387A1), UINT64_C(0xD7986774E864D8CE),
+ UINT64_C(0x90321D9D438327FA), UINT64_C(0x231C512340247895),
+ UINT64_C(0x1F66E84E144CD992), UINT64_C(0xAC48A4F017EB86FD),
+ UINT64_C(0xEBE2DE19BC0C79C9), UINT64_C(0x58CC92A7BFAB26A6),
+ UINT64_C(0x9317ACC314DD3BC7), UINT64_C(0x2039E07D177A64A8),
+ UINT64_C(0x67939A94BC9D9B9C), UINT64_C(0xD4BDD62ABF3AC4F3),
+ UINT64_C(0xE8C76F47EB5265F4), UINT64_C(0x5BE923F9E8F53A9B),
+ UINT64_C(0x1C4359104312C5AF), UINT64_C(0xAF6D15AE40B59AC0),
+ UINT64_C(0x192D8AF2BAF0E1E8), UINT64_C(0xAA03C64CB957BE87),
+ UINT64_C(0xEDA9BCA512B041B3), UINT64_C(0x5E87F01B11171EDC),
+ UINT64_C(0x62FD4976457FBFDB), UINT64_C(0xD1D305C846D8E0B4),
+ UINT64_C(0x96797F21ED3F1F80), UINT64_C(0x2557339FEE9840EF),
+ UINT64_C(0xEE8C0DFB45EE5D8E), UINT64_C(0x5DA24145464902E1),
+ UINT64_C(0x1A083BACEDAEFDD5), UINT64_C(0xA9267712EE09A2BA),
+ UINT64_C(0x955CCE7FBA6103BD), UINT64_C(0x267282C1B9C65CD2),
+ UINT64_C(0x61D8F8281221A3E6), UINT64_C(0xD2F6B4961186FC89),
+ UINT64_C(0x9F8169BA49A54B33), UINT64_C(0x2CAF25044A02145C),
+ UINT64_C(0x6B055FEDE1E5EB68), UINT64_C(0xD82B1353E242B407),
+ UINT64_C(0xE451AA3EB62A1500), UINT64_C(0x577FE680B58D4A6F),
+ UINT64_C(0x10D59C691E6AB55B), UINT64_C(0xA3FBD0D71DCDEA34),
+ UINT64_C(0x6820EEB3B6BBF755), UINT64_C(0xDB0EA20DB51CA83A),
+ UINT64_C(0x9CA4D8E41EFB570E), UINT64_C(0x2F8A945A1D5C0861),
+ UINT64_C(0x13F02D374934A966), UINT64_C(0xA0DE61894A93F609),
+ UINT64_C(0xE7741B60E174093D), UINT64_C(0x545A57DEE2D35652),
+ UINT64_C(0xE21AC88218962D7A), UINT64_C(0x5134843C1B317215),
+ UINT64_C(0x169EFED5B0D68D21), UINT64_C(0xA5B0B26BB371D24E),
+ UINT64_C(0x99CA0B06E7197349), UINT64_C(0x2AE447B8E4BE2C26),
+ UINT64_C(0x6D4E3D514F59D312), UINT64_C(0xDE6071EF4CFE8C7D),
+ UINT64_C(0x15BB4F8BE788911C), UINT64_C(0xA6950335E42FCE73),
+ UINT64_C(0xE13F79DC4FC83147), UINT64_C(0x521135624C6F6E28),
+ UINT64_C(0x6E6B8C0F1807CF2F), UINT64_C(0xDD45C0B11BA09040),
+ UINT64_C(0x9AEFBA58B0476F74), UINT64_C(0x29C1F6E6B3E0301B),
+ UINT64_C(0xC96C5795D7870F42), UINT64_C(0x7A421B2BD420502D),
+ UINT64_C(0x3DE861C27FC7AF19), UINT64_C(0x8EC62D7C7C60F076),
+ UINT64_C(0xB2BC941128085171), UINT64_C(0x0192D8AF2BAF0E1E),
+ UINT64_C(0x4638A2468048F12A), UINT64_C(0xF516EEF883EFAE45),
+ UINT64_C(0x3ECDD09C2899B324), UINT64_C(0x8DE39C222B3EEC4B),
+ UINT64_C(0xCA49E6CB80D9137F), UINT64_C(0x7967AA75837E4C10),
+ UINT64_C(0x451D1318D716ED17), UINT64_C(0xF6335FA6D4B1B278),
+ UINT64_C(0xB199254F7F564D4C), UINT64_C(0x02B769F17CF11223),
+ UINT64_C(0xB4F7F6AD86B4690B), UINT64_C(0x07D9BA1385133664),
+ UINT64_C(0x4073C0FA2EF4C950), UINT64_C(0xF35D8C442D53963F),
+ UINT64_C(0xCF273529793B3738), UINT64_C(0x7C0979977A9C6857),
+ UINT64_C(0x3BA3037ED17B9763), UINT64_C(0x888D4FC0D2DCC80C),
+ UINT64_C(0x435671A479AAD56D), UINT64_C(0xF0783D1A7A0D8A02),
+ UINT64_C(0xB7D247F3D1EA7536), UINT64_C(0x04FC0B4DD24D2A59),
+ UINT64_C(0x3886B22086258B5E), UINT64_C(0x8BA8FE9E8582D431),
+ UINT64_C(0xCC0284772E652B05), UINT64_C(0x7F2CC8C92DC2746A),
+ UINT64_C(0x325B15E575E1C3D0), UINT64_C(0x8175595B76469CBF),
+ UINT64_C(0xC6DF23B2DDA1638B), UINT64_C(0x75F16F0CDE063CE4),
+ UINT64_C(0x498BD6618A6E9DE3), UINT64_C(0xFAA59ADF89C9C28C),
+ UINT64_C(0xBD0FE036222E3DB8), UINT64_C(0x0E21AC88218962D7),
+ UINT64_C(0xC5FA92EC8AFF7FB6), UINT64_C(0x76D4DE52895820D9),
+ UINT64_C(0x317EA4BB22BFDFED), UINT64_C(0x8250E80521188082),
+ UINT64_C(0xBE2A516875702185), UINT64_C(0x0D041DD676D77EEA),
+ UINT64_C(0x4AAE673FDD3081DE), UINT64_C(0xF9802B81DE97DEB1),
+ UINT64_C(0x4FC0B4DD24D2A599), UINT64_C(0xFCEEF8632775FAF6),
+ UINT64_C(0xBB44828A8C9205C2), UINT64_C(0x086ACE348F355AAD),
+ UINT64_C(0x34107759DB5DFBAA), UINT64_C(0x873E3BE7D8FAA4C5),
+ UINT64_C(0xC094410E731D5BF1), UINT64_C(0x73BA0DB070BA049E),
+ UINT64_C(0xB86133D4DBCC19FF), UINT64_C(0x0B4F7F6AD86B4690),
+ UINT64_C(0x4CE50583738CB9A4), UINT64_C(0xFFCB493D702BE6CB),
+ UINT64_C(0xC3B1F050244347CC), UINT64_C(0x709FBCEE27E418A3),
+ UINT64_C(0x3735C6078C03E797), UINT64_C(0x841B8AB98FA4B8F8),
+ UINT64_C(0xADDA7C5F3C4488E3), UINT64_C(0x1EF430E13FE3D78C),
+ UINT64_C(0x595E4A08940428B8), UINT64_C(0xEA7006B697A377D7),
+ UINT64_C(0xD60ABFDBC3CBD6D0), UINT64_C(0x6524F365C06C89BF),
+ UINT64_C(0x228E898C6B8B768B), UINT64_C(0x91A0C532682C29E4),
+ UINT64_C(0x5A7BFB56C35A3485), UINT64_C(0xE955B7E8C0FD6BEA),
+ UINT64_C(0xAEFFCD016B1A94DE), UINT64_C(0x1DD181BF68BDCBB1),
+ UINT64_C(0x21AB38D23CD56AB6), UINT64_C(0x9285746C3F7235D9),
+ UINT64_C(0xD52F0E859495CAED), UINT64_C(0x6601423B97329582),
+ UINT64_C(0xD041DD676D77EEAA), UINT64_C(0x636F91D96ED0B1C5),
+ UINT64_C(0x24C5EB30C5374EF1), UINT64_C(0x97EBA78EC690119E),
+ UINT64_C(0xAB911EE392F8B099), UINT64_C(0x18BF525D915FEFF6),
+ UINT64_C(0x5F1528B43AB810C2), UINT64_C(0xEC3B640A391F4FAD),
+ UINT64_C(0x27E05A6E926952CC), UINT64_C(0x94CE16D091CE0DA3),
+ UINT64_C(0xD3646C393A29F297), UINT64_C(0x604A2087398EADF8),
+ UINT64_C(0x5C3099EA6DE60CFF), UINT64_C(0xEF1ED5546E415390),
+ UINT64_C(0xA8B4AFBDC5A6ACA4), UINT64_C(0x1B9AE303C601F3CB),
+ UINT64_C(0x56ED3E2F9E224471), UINT64_C(0xE5C372919D851B1E),
+ UINT64_C(0xA26908783662E42A), UINT64_C(0x114744C635C5BB45),
+ UINT64_C(0x2D3DFDAB61AD1A42), UINT64_C(0x9E13B115620A452D),
+ UINT64_C(0xD9B9CBFCC9EDBA19), UINT64_C(0x6A978742CA4AE576),
+ UINT64_C(0xA14CB926613CF817), UINT64_C(0x1262F598629BA778),
+ UINT64_C(0x55C88F71C97C584C), UINT64_C(0xE6E6C3CFCADB0723),
+ UINT64_C(0xDA9C7AA29EB3A624), UINT64_C(0x69B2361C9D14F94B),
+ UINT64_C(0x2E184CF536F3067F), UINT64_C(0x9D36004B35545910),
+ UINT64_C(0x2B769F17CF112238), UINT64_C(0x9858D3A9CCB67D57),
+ UINT64_C(0xDFF2A94067518263), UINT64_C(0x6CDCE5FE64F6DD0C),
+ UINT64_C(0x50A65C93309E7C0B), UINT64_C(0xE388102D33392364),
+ UINT64_C(0xA4226AC498DEDC50), UINT64_C(0x170C267A9B79833F),
+ UINT64_C(0xDCD7181E300F9E5E), UINT64_C(0x6FF954A033A8C131),
+ UINT64_C(0x28532E49984F3E05), UINT64_C(0x9B7D62F79BE8616A),
+ UINT64_C(0xA707DB9ACF80C06D), UINT64_C(0x14299724CC279F02),
+ UINT64_C(0x5383EDCD67C06036), UINT64_C(0xE0ADA17364673F59)
+ }, {
+ UINT64_C(0x0000000000000000), UINT64_C(0x54E979925CD0F10D),
+ UINT64_C(0xA9D2F324B9A1E21A), UINT64_C(0xFD3B8AB6E5711317),
+ UINT64_C(0xC17D4962DC4DDAB1), UINT64_C(0x959430F0809D2BBC),
+ UINT64_C(0x68AFBA4665EC38AB), UINT64_C(0x3C46C3D4393CC9A6),
+ UINT64_C(0x10223DEE1795ABE7), UINT64_C(0x44CB447C4B455AEA),
+ UINT64_C(0xB9F0CECAAE3449FD), UINT64_C(0xED19B758F2E4B8F0),
+ UINT64_C(0xD15F748CCBD87156), UINT64_C(0x85B60D1E9708805B),
+ UINT64_C(0x788D87A87279934C), UINT64_C(0x2C64FE3A2EA96241),
+ UINT64_C(0x20447BDC2F2B57CE), UINT64_C(0x74AD024E73FBA6C3),
+ UINT64_C(0x899688F8968AB5D4), UINT64_C(0xDD7FF16ACA5A44D9),
+ UINT64_C(0xE13932BEF3668D7F), UINT64_C(0xB5D04B2CAFB67C72),
+ UINT64_C(0x48EBC19A4AC76F65), UINT64_C(0x1C02B80816179E68),
+ UINT64_C(0x3066463238BEFC29), UINT64_C(0x648F3FA0646E0D24),
+ UINT64_C(0x99B4B516811F1E33), UINT64_C(0xCD5DCC84DDCFEF3E),
+ UINT64_C(0xF11B0F50E4F32698), UINT64_C(0xA5F276C2B823D795),
+ UINT64_C(0x58C9FC745D52C482), UINT64_C(0x0C2085E60182358F),
+ UINT64_C(0x4088F7B85E56AF9C), UINT64_C(0x14618E2A02865E91),
+ UINT64_C(0xE95A049CE7F74D86), UINT64_C(0xBDB37D0EBB27BC8B),
+ UINT64_C(0x81F5BEDA821B752D), UINT64_C(0xD51CC748DECB8420),
+ UINT64_C(0x28274DFE3BBA9737), UINT64_C(0x7CCE346C676A663A),
+ UINT64_C(0x50AACA5649C3047B), UINT64_C(0x0443B3C41513F576),
+ UINT64_C(0xF9783972F062E661), UINT64_C(0xAD9140E0ACB2176C),
+ UINT64_C(0x91D78334958EDECA), UINT64_C(0xC53EFAA6C95E2FC7),
+ UINT64_C(0x380570102C2F3CD0), UINT64_C(0x6CEC098270FFCDDD),
+ UINT64_C(0x60CC8C64717DF852), UINT64_C(0x3425F5F62DAD095F),
+ UINT64_C(0xC91E7F40C8DC1A48), UINT64_C(0x9DF706D2940CEB45),
+ UINT64_C(0xA1B1C506AD3022E3), UINT64_C(0xF558BC94F1E0D3EE),
+ UINT64_C(0x086336221491C0F9), UINT64_C(0x5C8A4FB0484131F4),
+ UINT64_C(0x70EEB18A66E853B5), UINT64_C(0x2407C8183A38A2B8),
+ UINT64_C(0xD93C42AEDF49B1AF), UINT64_C(0x8DD53B3C839940A2),
+ UINT64_C(0xB193F8E8BAA58904), UINT64_C(0xE57A817AE6757809),
+ UINT64_C(0x18410BCC03046B1E), UINT64_C(0x4CA8725E5FD49A13),
+ UINT64_C(0x8111EF70BCAD5F38), UINT64_C(0xD5F896E2E07DAE35),
+ UINT64_C(0x28C31C54050CBD22), UINT64_C(0x7C2A65C659DC4C2F),
+ UINT64_C(0x406CA61260E08589), UINT64_C(0x1485DF803C307484),
+ UINT64_C(0xE9BE5536D9416793), UINT64_C(0xBD572CA48591969E),
+ UINT64_C(0x9133D29EAB38F4DF), UINT64_C(0xC5DAAB0CF7E805D2),
+ UINT64_C(0x38E121BA129916C5), UINT64_C(0x6C0858284E49E7C8),
+ UINT64_C(0x504E9BFC77752E6E), UINT64_C(0x04A7E26E2BA5DF63),
+ UINT64_C(0xF99C68D8CED4CC74), UINT64_C(0xAD75114A92043D79),
+ UINT64_C(0xA15594AC938608F6), UINT64_C(0xF5BCED3ECF56F9FB),
+ UINT64_C(0x088767882A27EAEC), UINT64_C(0x5C6E1E1A76F71BE1),
+ UINT64_C(0x6028DDCE4FCBD247), UINT64_C(0x34C1A45C131B234A),
+ UINT64_C(0xC9FA2EEAF66A305D), UINT64_C(0x9D135778AABAC150),
+ UINT64_C(0xB177A9428413A311), UINT64_C(0xE59ED0D0D8C3521C),
+ UINT64_C(0x18A55A663DB2410B), UINT64_C(0x4C4C23F46162B006),
+ UINT64_C(0x700AE020585E79A0), UINT64_C(0x24E399B2048E88AD),
+ UINT64_C(0xD9D81304E1FF9BBA), UINT64_C(0x8D316A96BD2F6AB7),
+ UINT64_C(0xC19918C8E2FBF0A4), UINT64_C(0x9570615ABE2B01A9),
+ UINT64_C(0x684BEBEC5B5A12BE), UINT64_C(0x3CA2927E078AE3B3),
+ UINT64_C(0x00E451AA3EB62A15), UINT64_C(0x540D28386266DB18),
+ UINT64_C(0xA936A28E8717C80F), UINT64_C(0xFDDFDB1CDBC73902),
+ UINT64_C(0xD1BB2526F56E5B43), UINT64_C(0x85525CB4A9BEAA4E),
+ UINT64_C(0x7869D6024CCFB959), UINT64_C(0x2C80AF90101F4854),
+ UINT64_C(0x10C66C44292381F2), UINT64_C(0x442F15D675F370FF),
+ UINT64_C(0xB9149F60908263E8), UINT64_C(0xEDFDE6F2CC5292E5),
+ UINT64_C(0xE1DD6314CDD0A76A), UINT64_C(0xB5341A8691005667),
+ UINT64_C(0x480F903074714570), UINT64_C(0x1CE6E9A228A1B47D),
+ UINT64_C(0x20A02A76119D7DDB), UINT64_C(0x744953E44D4D8CD6),
+ UINT64_C(0x8972D952A83C9FC1), UINT64_C(0xDD9BA0C0F4EC6ECC),
+ UINT64_C(0xF1FF5EFADA450C8D), UINT64_C(0xA51627688695FD80),
+ UINT64_C(0x582DADDE63E4EE97), UINT64_C(0x0CC4D44C3F341F9A),
+ UINT64_C(0x308217980608D63C), UINT64_C(0x646B6E0A5AD82731),
+ UINT64_C(0x9950E4BCBFA93426), UINT64_C(0xCDB99D2EE379C52B),
+ UINT64_C(0x90FB71CAD654A0F5), UINT64_C(0xC41208588A8451F8),
+ UINT64_C(0x392982EE6FF542EF), UINT64_C(0x6DC0FB7C3325B3E2),
+ UINT64_C(0x518638A80A197A44), UINT64_C(0x056F413A56C98B49),
+ UINT64_C(0xF854CB8CB3B8985E), UINT64_C(0xACBDB21EEF686953),
+ UINT64_C(0x80D94C24C1C10B12), UINT64_C(0xD43035B69D11FA1F),
+ UINT64_C(0x290BBF007860E908), UINT64_C(0x7DE2C69224B01805),
+ UINT64_C(0x41A405461D8CD1A3), UINT64_C(0x154D7CD4415C20AE),
+ UINT64_C(0xE876F662A42D33B9), UINT64_C(0xBC9F8FF0F8FDC2B4),
+ UINT64_C(0xB0BF0A16F97FF73B), UINT64_C(0xE4567384A5AF0636),
+ UINT64_C(0x196DF93240DE1521), UINT64_C(0x4D8480A01C0EE42C),
+ UINT64_C(0x71C2437425322D8A), UINT64_C(0x252B3AE679E2DC87),
+ UINT64_C(0xD810B0509C93CF90), UINT64_C(0x8CF9C9C2C0433E9D),
+ UINT64_C(0xA09D37F8EEEA5CDC), UINT64_C(0xF4744E6AB23AADD1),
+ UINT64_C(0x094FC4DC574BBEC6), UINT64_C(0x5DA6BD4E0B9B4FCB),
+ UINT64_C(0x61E07E9A32A7866D), UINT64_C(0x350907086E777760),
+ UINT64_C(0xC8328DBE8B066477), UINT64_C(0x9CDBF42CD7D6957A),
+ UINT64_C(0xD073867288020F69), UINT64_C(0x849AFFE0D4D2FE64),
+ UINT64_C(0x79A1755631A3ED73), UINT64_C(0x2D480CC46D731C7E),
+ UINT64_C(0x110ECF10544FD5D8), UINT64_C(0x45E7B682089F24D5),
+ UINT64_C(0xB8DC3C34EDEE37C2), UINT64_C(0xEC3545A6B13EC6CF),
+ UINT64_C(0xC051BB9C9F97A48E), UINT64_C(0x94B8C20EC3475583),
+ UINT64_C(0x698348B826364694), UINT64_C(0x3D6A312A7AE6B799),
+ UINT64_C(0x012CF2FE43DA7E3F), UINT64_C(0x55C58B6C1F0A8F32),
+ UINT64_C(0xA8FE01DAFA7B9C25), UINT64_C(0xFC177848A6AB6D28),
+ UINT64_C(0xF037FDAEA72958A7), UINT64_C(0xA4DE843CFBF9A9AA),
+ UINT64_C(0x59E50E8A1E88BABD), UINT64_C(0x0D0C771842584BB0),
+ UINT64_C(0x314AB4CC7B648216), UINT64_C(0x65A3CD5E27B4731B),
+ UINT64_C(0x989847E8C2C5600C), UINT64_C(0xCC713E7A9E159101),
+ UINT64_C(0xE015C040B0BCF340), UINT64_C(0xB4FCB9D2EC6C024D),
+ UINT64_C(0x49C73364091D115A), UINT64_C(0x1D2E4AF655CDE057),
+ UINT64_C(0x216889226CF129F1), UINT64_C(0x7581F0B03021D8FC),
+ UINT64_C(0x88BA7A06D550CBEB), UINT64_C(0xDC53039489803AE6),
+ UINT64_C(0x11EA9EBA6AF9FFCD), UINT64_C(0x4503E72836290EC0),
+ UINT64_C(0xB8386D9ED3581DD7), UINT64_C(0xECD1140C8F88ECDA),
+ UINT64_C(0xD097D7D8B6B4257C), UINT64_C(0x847EAE4AEA64D471),
+ UINT64_C(0x794524FC0F15C766), UINT64_C(0x2DAC5D6E53C5366B),
+ UINT64_C(0x01C8A3547D6C542A), UINT64_C(0x5521DAC621BCA527),
+ UINT64_C(0xA81A5070C4CDB630), UINT64_C(0xFCF329E2981D473D),
+ UINT64_C(0xC0B5EA36A1218E9B), UINT64_C(0x945C93A4FDF17F96),
+ UINT64_C(0x6967191218806C81), UINT64_C(0x3D8E608044509D8C),
+ UINT64_C(0x31AEE56645D2A803), UINT64_C(0x65479CF41902590E),
+ UINT64_C(0x987C1642FC734A19), UINT64_C(0xCC956FD0A0A3BB14),
+ UINT64_C(0xF0D3AC04999F72B2), UINT64_C(0xA43AD596C54F83BF),
+ UINT64_C(0x59015F20203E90A8), UINT64_C(0x0DE826B27CEE61A5),
+ UINT64_C(0x218CD888524703E4), UINT64_C(0x7565A11A0E97F2E9),
+ UINT64_C(0x885E2BACEBE6E1FE), UINT64_C(0xDCB7523EB73610F3),
+ UINT64_C(0xE0F191EA8E0AD955), UINT64_C(0xB418E878D2DA2858),
+ UINT64_C(0x492362CE37AB3B4F), UINT64_C(0x1DCA1B5C6B7BCA42),
+ UINT64_C(0x5162690234AF5051), UINT64_C(0x058B1090687FA15C),
+ UINT64_C(0xF8B09A268D0EB24B), UINT64_C(0xAC59E3B4D1DE4346),
+ UINT64_C(0x901F2060E8E28AE0), UINT64_C(0xC4F659F2B4327BED),
+ UINT64_C(0x39CDD344514368FA), UINT64_C(0x6D24AAD60D9399F7),
+ UINT64_C(0x414054EC233AFBB6), UINT64_C(0x15A92D7E7FEA0ABB),
+ UINT64_C(0xE892A7C89A9B19AC), UINT64_C(0xBC7BDE5AC64BE8A1),
+ UINT64_C(0x803D1D8EFF772107), UINT64_C(0xD4D4641CA3A7D00A),
+ UINT64_C(0x29EFEEAA46D6C31D), UINT64_C(0x7D0697381A063210),
+ UINT64_C(0x712612DE1B84079F), UINT64_C(0x25CF6B4C4754F692),
+ UINT64_C(0xD8F4E1FAA225E585), UINT64_C(0x8C1D9868FEF51488),
+ UINT64_C(0xB05B5BBCC7C9DD2E), UINT64_C(0xE4B2222E9B192C23),
+ UINT64_C(0x1989A8987E683F34), UINT64_C(0x4D60D10A22B8CE39),
+ UINT64_C(0x61042F300C11AC78), UINT64_C(0x35ED56A250C15D75),
+ UINT64_C(0xC8D6DC14B5B04E62), UINT64_C(0x9C3FA586E960BF6F),
+ UINT64_C(0xA0796652D05C76C9), UINT64_C(0xF4901FC08C8C87C4),
+ UINT64_C(0x09AB957669FD94D3), UINT64_C(0x5D42ECE4352D65DE)
+ }, {
+ UINT64_C(0x0000000000000000), UINT64_C(0x3F0BE14A916A6DCB),
+ UINT64_C(0x7E17C29522D4DB96), UINT64_C(0x411C23DFB3BEB65D),
+ UINT64_C(0xFC2F852A45A9B72C), UINT64_C(0xC3246460D4C3DAE7),
+ UINT64_C(0x823847BF677D6CBA), UINT64_C(0xBD33A6F5F6170171),
+ UINT64_C(0x6A87A57F245D70DD), UINT64_C(0x558C4435B5371D16),
+ UINT64_C(0x149067EA0689AB4B), UINT64_C(0x2B9B86A097E3C680),
+ UINT64_C(0x96A8205561F4C7F1), UINT64_C(0xA9A3C11FF09EAA3A),
+ UINT64_C(0xE8BFE2C043201C67), UINT64_C(0xD7B4038AD24A71AC),
+ UINT64_C(0xD50F4AFE48BAE1BA), UINT64_C(0xEA04ABB4D9D08C71),
+ UINT64_C(0xAB18886B6A6E3A2C), UINT64_C(0x94136921FB0457E7),
+ UINT64_C(0x2920CFD40D135696), UINT64_C(0x162B2E9E9C793B5D),
+ UINT64_C(0x57370D412FC78D00), UINT64_C(0x683CEC0BBEADE0CB),
+ UINT64_C(0xBF88EF816CE79167), UINT64_C(0x80830ECBFD8DFCAC),
+ UINT64_C(0xC19F2D144E334AF1), UINT64_C(0xFE94CC5EDF59273A),
+ UINT64_C(0x43A76AAB294E264B), UINT64_C(0x7CAC8BE1B8244B80),
+ UINT64_C(0x3DB0A83E0B9AFDDD), UINT64_C(0x02BB49749AF09016),
+ UINT64_C(0x38C63AD73E7BDDF1), UINT64_C(0x07CDDB9DAF11B03A),
+ UINT64_C(0x46D1F8421CAF0667), UINT64_C(0x79DA19088DC56BAC),
+ UINT64_C(0xC4E9BFFD7BD26ADD), UINT64_C(0xFBE25EB7EAB80716),
+ UINT64_C(0xBAFE7D685906B14B), UINT64_C(0x85F59C22C86CDC80),
+ UINT64_C(0x52419FA81A26AD2C), UINT64_C(0x6D4A7EE28B4CC0E7),
+ UINT64_C(0x2C565D3D38F276BA), UINT64_C(0x135DBC77A9981B71),
+ UINT64_C(0xAE6E1A825F8F1A00), UINT64_C(0x9165FBC8CEE577CB),
+ UINT64_C(0xD079D8177D5BC196), UINT64_C(0xEF72395DEC31AC5D),
+ UINT64_C(0xEDC9702976C13C4B), UINT64_C(0xD2C29163E7AB5180),
+ UINT64_C(0x93DEB2BC5415E7DD), UINT64_C(0xACD553F6C57F8A16),
+ UINT64_C(0x11E6F50333688B67), UINT64_C(0x2EED1449A202E6AC),
+ UINT64_C(0x6FF1379611BC50F1), UINT64_C(0x50FAD6DC80D63D3A),
+ UINT64_C(0x874ED556529C4C96), UINT64_C(0xB845341CC3F6215D),
+ UINT64_C(0xF95917C370489700), UINT64_C(0xC652F689E122FACB),
+ UINT64_C(0x7B61507C1735FBBA), UINT64_C(0x446AB136865F9671),
+ UINT64_C(0x057692E935E1202C), UINT64_C(0x3A7D73A3A48B4DE7),
+ UINT64_C(0x718C75AE7CF7BBE2), UINT64_C(0x4E8794E4ED9DD629),
+ UINT64_C(0x0F9BB73B5E236074), UINT64_C(0x30905671CF490DBF),
+ UINT64_C(0x8DA3F084395E0CCE), UINT64_C(0xB2A811CEA8346105),
+ UINT64_C(0xF3B432111B8AD758), UINT64_C(0xCCBFD35B8AE0BA93),
+ UINT64_C(0x1B0BD0D158AACB3F), UINT64_C(0x2400319BC9C0A6F4),
+ UINT64_C(0x651C12447A7E10A9), UINT64_C(0x5A17F30EEB147D62),
+ UINT64_C(0xE72455FB1D037C13), UINT64_C(0xD82FB4B18C6911D8),
+ UINT64_C(0x9933976E3FD7A785), UINT64_C(0xA6387624AEBDCA4E),
+ UINT64_C(0xA4833F50344D5A58), UINT64_C(0x9B88DE1AA5273793),
+ UINT64_C(0xDA94FDC5169981CE), UINT64_C(0xE59F1C8F87F3EC05),
+ UINT64_C(0x58ACBA7A71E4ED74), UINT64_C(0x67A75B30E08E80BF),
+ UINT64_C(0x26BB78EF533036E2), UINT64_C(0x19B099A5C25A5B29),
+ UINT64_C(0xCE049A2F10102A85), UINT64_C(0xF10F7B65817A474E),
+ UINT64_C(0xB01358BA32C4F113), UINT64_C(0x8F18B9F0A3AE9CD8),
+ UINT64_C(0x322B1F0555B99DA9), UINT64_C(0x0D20FE4FC4D3F062),
+ UINT64_C(0x4C3CDD90776D463F), UINT64_C(0x73373CDAE6072BF4),
+ UINT64_C(0x494A4F79428C6613), UINT64_C(0x7641AE33D3E60BD8),
+ UINT64_C(0x375D8DEC6058BD85), UINT64_C(0x08566CA6F132D04E),
+ UINT64_C(0xB565CA530725D13F), UINT64_C(0x8A6E2B19964FBCF4),
+ UINT64_C(0xCB7208C625F10AA9), UINT64_C(0xF479E98CB49B6762),
+ UINT64_C(0x23CDEA0666D116CE), UINT64_C(0x1CC60B4CF7BB7B05),
+ UINT64_C(0x5DDA28934405CD58), UINT64_C(0x62D1C9D9D56FA093),
+ UINT64_C(0xDFE26F2C2378A1E2), UINT64_C(0xE0E98E66B212CC29),
+ UINT64_C(0xA1F5ADB901AC7A74), UINT64_C(0x9EFE4CF390C617BF),
+ UINT64_C(0x9C4505870A3687A9), UINT64_C(0xA34EE4CD9B5CEA62),
+ UINT64_C(0xE252C71228E25C3F), UINT64_C(0xDD592658B98831F4),
+ UINT64_C(0x606A80AD4F9F3085), UINT64_C(0x5F6161E7DEF55D4E),
+ UINT64_C(0x1E7D42386D4BEB13), UINT64_C(0x2176A372FC2186D8),
+ UINT64_C(0xF6C2A0F82E6BF774), UINT64_C(0xC9C941B2BF019ABF),
+ UINT64_C(0x88D5626D0CBF2CE2), UINT64_C(0xB7DE83279DD54129),
+ UINT64_C(0x0AED25D26BC24058), UINT64_C(0x35E6C498FAA82D93),
+ UINT64_C(0x74FAE74749169BCE), UINT64_C(0x4BF1060DD87CF605),
+ UINT64_C(0xE318EB5CF9EF77C4), UINT64_C(0xDC130A1668851A0F),
+ UINT64_C(0x9D0F29C9DB3BAC52), UINT64_C(0xA204C8834A51C199),
+ UINT64_C(0x1F376E76BC46C0E8), UINT64_C(0x203C8F3C2D2CAD23),
+ UINT64_C(0x6120ACE39E921B7E), UINT64_C(0x5E2B4DA90FF876B5),
+ UINT64_C(0x899F4E23DDB20719), UINT64_C(0xB694AF694CD86AD2),
+ UINT64_C(0xF7888CB6FF66DC8F), UINT64_C(0xC8836DFC6E0CB144),
+ UINT64_C(0x75B0CB09981BB035), UINT64_C(0x4ABB2A430971DDFE),
+ UINT64_C(0x0BA7099CBACF6BA3), UINT64_C(0x34ACE8D62BA50668),
+ UINT64_C(0x3617A1A2B155967E), UINT64_C(0x091C40E8203FFBB5),
+ UINT64_C(0x4800633793814DE8), UINT64_C(0x770B827D02EB2023),
+ UINT64_C(0xCA382488F4FC2152), UINT64_C(0xF533C5C265964C99),
+ UINT64_C(0xB42FE61DD628FAC4), UINT64_C(0x8B2407574742970F),
+ UINT64_C(0x5C9004DD9508E6A3), UINT64_C(0x639BE59704628B68),
+ UINT64_C(0x2287C648B7DC3D35), UINT64_C(0x1D8C270226B650FE),
+ UINT64_C(0xA0BF81F7D0A1518F), UINT64_C(0x9FB460BD41CB3C44),
+ UINT64_C(0xDEA84362F2758A19), UINT64_C(0xE1A3A228631FE7D2),
+ UINT64_C(0xDBDED18BC794AA35), UINT64_C(0xE4D530C156FEC7FE),
+ UINT64_C(0xA5C9131EE54071A3), UINT64_C(0x9AC2F254742A1C68),
+ UINT64_C(0x27F154A1823D1D19), UINT64_C(0x18FAB5EB135770D2),
+ UINT64_C(0x59E69634A0E9C68F), UINT64_C(0x66ED777E3183AB44),
+ UINT64_C(0xB15974F4E3C9DAE8), UINT64_C(0x8E5295BE72A3B723),
+ UINT64_C(0xCF4EB661C11D017E), UINT64_C(0xF045572B50776CB5),
+ UINT64_C(0x4D76F1DEA6606DC4), UINT64_C(0x727D1094370A000F),
+ UINT64_C(0x3361334B84B4B652), UINT64_C(0x0C6AD20115DEDB99),
+ UINT64_C(0x0ED19B758F2E4B8F), UINT64_C(0x31DA7A3F1E442644),
+ UINT64_C(0x70C659E0ADFA9019), UINT64_C(0x4FCDB8AA3C90FDD2),
+ UINT64_C(0xF2FE1E5FCA87FCA3), UINT64_C(0xCDF5FF155BED9168),
+ UINT64_C(0x8CE9DCCAE8532735), UINT64_C(0xB3E23D8079394AFE),
+ UINT64_C(0x64563E0AAB733B52), UINT64_C(0x5B5DDF403A195699),
+ UINT64_C(0x1A41FC9F89A7E0C4), UINT64_C(0x254A1DD518CD8D0F),
+ UINT64_C(0x9879BB20EEDA8C7E), UINT64_C(0xA7725A6A7FB0E1B5),
+ UINT64_C(0xE66E79B5CC0E57E8), UINT64_C(0xD96598FF5D643A23),
+ UINT64_C(0x92949EF28518CC26), UINT64_C(0xAD9F7FB81472A1ED),
+ UINT64_C(0xEC835C67A7CC17B0), UINT64_C(0xD388BD2D36A67A7B),
+ UINT64_C(0x6EBB1BD8C0B17B0A), UINT64_C(0x51B0FA9251DB16C1),
+ UINT64_C(0x10ACD94DE265A09C), UINT64_C(0x2FA73807730FCD57),
+ UINT64_C(0xF8133B8DA145BCFB), UINT64_C(0xC718DAC7302FD130),
+ UINT64_C(0x8604F9188391676D), UINT64_C(0xB90F185212FB0AA6),
+ UINT64_C(0x043CBEA7E4EC0BD7), UINT64_C(0x3B375FED7586661C),
+ UINT64_C(0x7A2B7C32C638D041), UINT64_C(0x45209D785752BD8A),
+ UINT64_C(0x479BD40CCDA22D9C), UINT64_C(0x789035465CC84057),
+ UINT64_C(0x398C1699EF76F60A), UINT64_C(0x0687F7D37E1C9BC1),
+ UINT64_C(0xBBB45126880B9AB0), UINT64_C(0x84BFB06C1961F77B),
+ UINT64_C(0xC5A393B3AADF4126), UINT64_C(0xFAA872F93BB52CED),
+ UINT64_C(0x2D1C7173E9FF5D41), UINT64_C(0x121790397895308A),
+ UINT64_C(0x530BB3E6CB2B86D7), UINT64_C(0x6C0052AC5A41EB1C),
+ UINT64_C(0xD133F459AC56EA6D), UINT64_C(0xEE3815133D3C87A6),
+ UINT64_C(0xAF2436CC8E8231FB), UINT64_C(0x902FD7861FE85C30),
+ UINT64_C(0xAA52A425BB6311D7), UINT64_C(0x9559456F2A097C1C),
+ UINT64_C(0xD44566B099B7CA41), UINT64_C(0xEB4E87FA08DDA78A),
+ UINT64_C(0x567D210FFECAA6FB), UINT64_C(0x6976C0456FA0CB30),
+ UINT64_C(0x286AE39ADC1E7D6D), UINT64_C(0x176102D04D7410A6),
+ UINT64_C(0xC0D5015A9F3E610A), UINT64_C(0xFFDEE0100E540CC1),
+ UINT64_C(0xBEC2C3CFBDEABA9C), UINT64_C(0x81C922852C80D757),
+ UINT64_C(0x3CFA8470DA97D626), UINT64_C(0x03F1653A4BFDBBED),
+ UINT64_C(0x42ED46E5F8430DB0), UINT64_C(0x7DE6A7AF6929607B),
+ UINT64_C(0x7F5DEEDBF3D9F06D), UINT64_C(0x40560F9162B39DA6),
+ UINT64_C(0x014A2C4ED10D2BFB), UINT64_C(0x3E41CD0440674630),
+ UINT64_C(0x83726BF1B6704741), UINT64_C(0xBC798ABB271A2A8A),
+ UINT64_C(0xFD65A96494A49CD7), UINT64_C(0xC26E482E05CEF11C),
+ UINT64_C(0x15DA4BA4D78480B0), UINT64_C(0x2AD1AAEE46EEED7B),
+ UINT64_C(0x6BCD8931F5505B26), UINT64_C(0x54C6687B643A36ED),
+ UINT64_C(0xE9F5CE8E922D379C), UINT64_C(0xD6FE2FC403475A57),
+ UINT64_C(0x97E20C1BB0F9EC0A), UINT64_C(0xA8E9ED51219381C1)
+ }, {
+ UINT64_C(0x0000000000000000), UINT64_C(0x1DEE8A5E222CA1DC),
+ UINT64_C(0x3BDD14BC445943B8), UINT64_C(0x26339EE26675E264),
+ UINT64_C(0x77BA297888B28770), UINT64_C(0x6A54A326AA9E26AC),
+ UINT64_C(0x4C673DC4CCEBC4C8), UINT64_C(0x5189B79AEEC76514),
+ UINT64_C(0xEF7452F111650EE0), UINT64_C(0xF29AD8AF3349AF3C),
+ UINT64_C(0xD4A9464D553C4D58), UINT64_C(0xC947CC137710EC84),
+ UINT64_C(0x98CE7B8999D78990), UINT64_C(0x8520F1D7BBFB284C),
+ UINT64_C(0xA3136F35DD8ECA28), UINT64_C(0xBEFDE56BFFA26BF4),
+ UINT64_C(0x4C300AC98DC40345), UINT64_C(0x51DE8097AFE8A299),
+ UINT64_C(0x77ED1E75C99D40FD), UINT64_C(0x6A03942BEBB1E121),
+ UINT64_C(0x3B8A23B105768435), UINT64_C(0x2664A9EF275A25E9),
+ UINT64_C(0x0057370D412FC78D), UINT64_C(0x1DB9BD5363036651),
+ UINT64_C(0xA34458389CA10DA5), UINT64_C(0xBEAAD266BE8DAC79),
+ UINT64_C(0x98994C84D8F84E1D), UINT64_C(0x8577C6DAFAD4EFC1),
+ UINT64_C(0xD4FE714014138AD5), UINT64_C(0xC910FB1E363F2B09),
+ UINT64_C(0xEF2365FC504AC96D), UINT64_C(0xF2CDEFA2726668B1),
+ UINT64_C(0x986015931B88068A), UINT64_C(0x858E9FCD39A4A756),
+ UINT64_C(0xA3BD012F5FD14532), UINT64_C(0xBE538B717DFDE4EE),
+ UINT64_C(0xEFDA3CEB933A81FA), UINT64_C(0xF234B6B5B1162026),
+ UINT64_C(0xD4072857D763C242), UINT64_C(0xC9E9A209F54F639E),
+ UINT64_C(0x771447620AED086A), UINT64_C(0x6AFACD3C28C1A9B6),
+ UINT64_C(0x4CC953DE4EB44BD2), UINT64_C(0x5127D9806C98EA0E),
+ UINT64_C(0x00AE6E1A825F8F1A), UINT64_C(0x1D40E444A0732EC6),
+ UINT64_C(0x3B737AA6C606CCA2), UINT64_C(0x269DF0F8E42A6D7E),
+ UINT64_C(0xD4501F5A964C05CF), UINT64_C(0xC9BE9504B460A413),
+ UINT64_C(0xEF8D0BE6D2154677), UINT64_C(0xF26381B8F039E7AB),
+ UINT64_C(0xA3EA36221EFE82BF), UINT64_C(0xBE04BC7C3CD22363),
+ UINT64_C(0x9837229E5AA7C107), UINT64_C(0x85D9A8C0788B60DB),
+ UINT64_C(0x3B244DAB87290B2F), UINT64_C(0x26CAC7F5A505AAF3),
+ UINT64_C(0x00F95917C3704897), UINT64_C(0x1D17D349E15CE94B),
+ UINT64_C(0x4C9E64D30F9B8C5F), UINT64_C(0x5170EE8D2DB72D83),
+ UINT64_C(0x7743706F4BC2CFE7), UINT64_C(0x6AADFA3169EE6E3B),
+ UINT64_C(0xA218840D981E1391), UINT64_C(0xBFF60E53BA32B24D),
+ UINT64_C(0x99C590B1DC475029), UINT64_C(0x842B1AEFFE6BF1F5),
+ UINT64_C(0xD5A2AD7510AC94E1), UINT64_C(0xC84C272B3280353D),
+ UINT64_C(0xEE7FB9C954F5D759), UINT64_C(0xF391339776D97685),
+ UINT64_C(0x4D6CD6FC897B1D71), UINT64_C(0x50825CA2AB57BCAD),
+ UINT64_C(0x76B1C240CD225EC9), UINT64_C(0x6B5F481EEF0EFF15),
+ UINT64_C(0x3AD6FF8401C99A01), UINT64_C(0x273875DA23E53BDD),
+ UINT64_C(0x010BEB384590D9B9), UINT64_C(0x1CE5616667BC7865),
+ UINT64_C(0xEE288EC415DA10D4), UINT64_C(0xF3C6049A37F6B108),
+ UINT64_C(0xD5F59A785183536C), UINT64_C(0xC81B102673AFF2B0),
+ UINT64_C(0x9992A7BC9D6897A4), UINT64_C(0x847C2DE2BF443678),
+ UINT64_C(0xA24FB300D931D41C), UINT64_C(0xBFA1395EFB1D75C0),
+ UINT64_C(0x015CDC3504BF1E34), UINT64_C(0x1CB2566B2693BFE8),
+ UINT64_C(0x3A81C88940E65D8C), UINT64_C(0x276F42D762CAFC50),
+ UINT64_C(0x76E6F54D8C0D9944), UINT64_C(0x6B087F13AE213898),
+ UINT64_C(0x4D3BE1F1C854DAFC), UINT64_C(0x50D56BAFEA787B20),
+ UINT64_C(0x3A78919E8396151B), UINT64_C(0x27961BC0A1BAB4C7),
+ UINT64_C(0x01A58522C7CF56A3), UINT64_C(0x1C4B0F7CE5E3F77F),
+ UINT64_C(0x4DC2B8E60B24926B), UINT64_C(0x502C32B8290833B7),
+ UINT64_C(0x761FAC5A4F7DD1D3), UINT64_C(0x6BF126046D51700F),
+ UINT64_C(0xD50CC36F92F31BFB), UINT64_C(0xC8E24931B0DFBA27),
+ UINT64_C(0xEED1D7D3D6AA5843), UINT64_C(0xF33F5D8DF486F99F),
+ UINT64_C(0xA2B6EA171A419C8B), UINT64_C(0xBF586049386D3D57),
+ UINT64_C(0x996BFEAB5E18DF33), UINT64_C(0x848574F57C347EEF),
+ UINT64_C(0x76489B570E52165E), UINT64_C(0x6BA611092C7EB782),
+ UINT64_C(0x4D958FEB4A0B55E6), UINT64_C(0x507B05B56827F43A),
+ UINT64_C(0x01F2B22F86E0912E), UINT64_C(0x1C1C3871A4CC30F2),
+ UINT64_C(0x3A2FA693C2B9D296), UINT64_C(0x27C12CCDE095734A),
+ UINT64_C(0x993CC9A61F3718BE), UINT64_C(0x84D243F83D1BB962),
+ UINT64_C(0xA2E1DD1A5B6E5B06), UINT64_C(0xBF0F57447942FADA),
+ UINT64_C(0xEE86E0DE97859FCE), UINT64_C(0xF3686A80B5A93E12),
+ UINT64_C(0xD55BF462D3DCDC76), UINT64_C(0xC8B57E3CF1F07DAA),
+ UINT64_C(0xD6E9A7309F3239A7), UINT64_C(0xCB072D6EBD1E987B),
+ UINT64_C(0xED34B38CDB6B7A1F), UINT64_C(0xF0DA39D2F947DBC3),
+ UINT64_C(0xA1538E481780BED7), UINT64_C(0xBCBD041635AC1F0B),
+ UINT64_C(0x9A8E9AF453D9FD6F), UINT64_C(0x876010AA71F55CB3),
+ UINT64_C(0x399DF5C18E573747), UINT64_C(0x24737F9FAC7B969B),
+ UINT64_C(0x0240E17DCA0E74FF), UINT64_C(0x1FAE6B23E822D523),
+ UINT64_C(0x4E27DCB906E5B037), UINT64_C(0x53C956E724C911EB),
+ UINT64_C(0x75FAC80542BCF38F), UINT64_C(0x6814425B60905253),
+ UINT64_C(0x9AD9ADF912F63AE2), UINT64_C(0x873727A730DA9B3E),
+ UINT64_C(0xA104B94556AF795A), UINT64_C(0xBCEA331B7483D886),
+ UINT64_C(0xED6384819A44BD92), UINT64_C(0xF08D0EDFB8681C4E),
+ UINT64_C(0xD6BE903DDE1DFE2A), UINT64_C(0xCB501A63FC315FF6),
+ UINT64_C(0x75ADFF0803933402), UINT64_C(0x6843755621BF95DE),
+ UINT64_C(0x4E70EBB447CA77BA), UINT64_C(0x539E61EA65E6D666),
+ UINT64_C(0x0217D6708B21B372), UINT64_C(0x1FF95C2EA90D12AE),
+ UINT64_C(0x39CAC2CCCF78F0CA), UINT64_C(0x24244892ED545116),
+ UINT64_C(0x4E89B2A384BA3F2D), UINT64_C(0x536738FDA6969EF1),
+ UINT64_C(0x7554A61FC0E37C95), UINT64_C(0x68BA2C41E2CFDD49),
+ UINT64_C(0x39339BDB0C08B85D), UINT64_C(0x24DD11852E241981),
+ UINT64_C(0x02EE8F674851FBE5), UINT64_C(0x1F0005396A7D5A39),
+ UINT64_C(0xA1FDE05295DF31CD), UINT64_C(0xBC136A0CB7F39011),
+ UINT64_C(0x9A20F4EED1867275), UINT64_C(0x87CE7EB0F3AAD3A9),
+ UINT64_C(0xD647C92A1D6DB6BD), UINT64_C(0xCBA943743F411761),
+ UINT64_C(0xED9ADD965934F505), UINT64_C(0xF07457C87B1854D9),
+ UINT64_C(0x02B9B86A097E3C68), UINT64_C(0x1F5732342B529DB4),
+ UINT64_C(0x3964ACD64D277FD0), UINT64_C(0x248A26886F0BDE0C),
+ UINT64_C(0x7503911281CCBB18), UINT64_C(0x68ED1B4CA3E01AC4),
+ UINT64_C(0x4EDE85AEC595F8A0), UINT64_C(0x53300FF0E7B9597C),
+ UINT64_C(0xEDCDEA9B181B3288), UINT64_C(0xF02360C53A379354),
+ UINT64_C(0xD610FE275C427130), UINT64_C(0xCBFE74797E6ED0EC),
+ UINT64_C(0x9A77C3E390A9B5F8), UINT64_C(0x879949BDB2851424),
+ UINT64_C(0xA1AAD75FD4F0F640), UINT64_C(0xBC445D01F6DC579C),
+ UINT64_C(0x74F1233D072C2A36), UINT64_C(0x691FA96325008BEA),
+ UINT64_C(0x4F2C37814375698E), UINT64_C(0x52C2BDDF6159C852),
+ UINT64_C(0x034B0A458F9EAD46), UINT64_C(0x1EA5801BADB20C9A),
+ UINT64_C(0x38961EF9CBC7EEFE), UINT64_C(0x257894A7E9EB4F22),
+ UINT64_C(0x9B8571CC164924D6), UINT64_C(0x866BFB923465850A),
+ UINT64_C(0xA05865705210676E), UINT64_C(0xBDB6EF2E703CC6B2),
+ UINT64_C(0xEC3F58B49EFBA3A6), UINT64_C(0xF1D1D2EABCD7027A),
+ UINT64_C(0xD7E24C08DAA2E01E), UINT64_C(0xCA0CC656F88E41C2),
+ UINT64_C(0x38C129F48AE82973), UINT64_C(0x252FA3AAA8C488AF),
+ UINT64_C(0x031C3D48CEB16ACB), UINT64_C(0x1EF2B716EC9DCB17),
+ UINT64_C(0x4F7B008C025AAE03), UINT64_C(0x52958AD220760FDF),
+ UINT64_C(0x74A614304603EDBB), UINT64_C(0x69489E6E642F4C67),
+ UINT64_C(0xD7B57B059B8D2793), UINT64_C(0xCA5BF15BB9A1864F),
+ UINT64_C(0xEC686FB9DFD4642B), UINT64_C(0xF186E5E7FDF8C5F7),
+ UINT64_C(0xA00F527D133FA0E3), UINT64_C(0xBDE1D8233113013F),
+ UINT64_C(0x9BD246C15766E35B), UINT64_C(0x863CCC9F754A4287),
+ UINT64_C(0xEC9136AE1CA42CBC), UINT64_C(0xF17FBCF03E888D60),
+ UINT64_C(0xD74C221258FD6F04), UINT64_C(0xCAA2A84C7AD1CED8),
+ UINT64_C(0x9B2B1FD69416ABCC), UINT64_C(0x86C59588B63A0A10),
+ UINT64_C(0xA0F60B6AD04FE874), UINT64_C(0xBD188134F26349A8),
+ UINT64_C(0x03E5645F0DC1225C), UINT64_C(0x1E0BEE012FED8380),
+ UINT64_C(0x383870E3499861E4), UINT64_C(0x25D6FABD6BB4C038),
+ UINT64_C(0x745F4D278573A52C), UINT64_C(0x69B1C779A75F04F0),
+ UINT64_C(0x4F82599BC12AE694), UINT64_C(0x526CD3C5E3064748),
+ UINT64_C(0xA0A13C6791602FF9), UINT64_C(0xBD4FB639B34C8E25),
+ UINT64_C(0x9B7C28DBD5396C41), UINT64_C(0x8692A285F715CD9D),
+ UINT64_C(0xD71B151F19D2A889), UINT64_C(0xCAF59F413BFE0955),
+ UINT64_C(0xECC601A35D8BEB31), UINT64_C(0xF1288BFD7FA74AED),
+ UINT64_C(0x4FD56E9680052119), UINT64_C(0x523BE4C8A22980C5),
+ UINT64_C(0x74087A2AC45C62A1), UINT64_C(0x69E6F074E670C37D),
+ UINT64_C(0x386F47EE08B7A669), UINT64_C(0x2581CDB02A9B07B5),
+ UINT64_C(0x03B253524CEEE5D1), UINT64_C(0x1E5CD90C6EC2440D)
+ }
+};
diff --git a/src/liblzma/check/crc64_tablegen.c b/src/liblzma/check/crc64_tablegen.c
new file mode 100644
index 0000000..0f1005f
--- /dev/null
+++ b/src/liblzma/check/crc64_tablegen.c
@@ -0,0 +1,56 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc64_tablegen.c
+/// \brief Generates CRC64 crc64_table.c
+///
+/// Compiling: gcc -std=c99 -o crc64_tablegen crc64_tablegen.c crc64_init.c
+/// Add -DWORDS_BIGENDIAN to generate big endian table.
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include <sys/types.h>
+#include <inttypes.h>
+#include <stdio.h>
+
+
+extern void lzma_crc64_init(void);
+
+extern uint64_t lzma_crc64_table[4][256];
+
+
+int
+main()
+{
+ lzma_crc64_init();
+
+ printf("/* This file has been automatically generated by "
+ "crc64_tablegen.c. */\n\n"
+ "#include <inttypes.h>\n\n"
+ "const uint64_t lzma_crc64_table[4][256] = {\n\t{");
+
+ for (size_t s = 0; s < 4; ++s) {
+ for (size_t b = 0; b < 256; ++b) {
+ if ((b % 2) == 0)
+ printf("\n\t\t");
+
+ printf("UINT64_C(0x%016" PRIX64 ")",
+ lzma_crc64_table[s][b]);
+
+ if (b != 255)
+ printf(", ");
+ }
+
+ if (s == 3)
+ printf("\n\t}\n};\n");
+ else
+ printf("\n\t}, {");
+ }
+
+ return 0;
+}
diff --git a/src/liblzma/check/crc64_x86.s b/src/liblzma/check/crc64_x86.s
new file mode 100644
index 0000000..2b8d349
--- /dev/null
+++ b/src/liblzma/check/crc64_x86.s
@@ -0,0 +1,203 @@
+/*
+ * Speed-optimized CRC64 using slicing-by-four algorithm
+ * Instruction set: i386
+ * Optimized for: i686
+ *
+ * This code has been put into the public domain by its authors:
+ * Igor Pavlov <http://7-zip.org/>
+ * Lasse Collin <lasse.collin@tukaani.org>
+ *
+ * This code needs lzma_crc64_table, which can be created using the
+ * following C code:
+
+uint64_t lzma_crc64_table[4][256];
+
+void
+init_table(void)
+{
+ static const uint64_t poly64 = UINT64_C(0xC96C5795D7870F42);
+
+ for (size_t s = 0; s < 4; ++s) {
+ for (size_t b = 0; b < 256; ++b) {
+ uint64_t r = s == 0 ? b : lzma_crc64_table[s - 1][b];
+
+ for (size_t i = 0; i < 8; ++i) {
+ if (r & 1)
+ r = (r >> 1) ^ poly64;
+ else
+ r >>= 1;
+ }
+
+ lzma_crc64_table[s][b] = r;
+ }
+ }
+}
+
+ * The prototype of the CRC64 function:
+ * extern uint64_t lzma_crc64(const uint8_t *buf, size_t size, uint64_t crc);
+ */
+
+ .text
+ .global lzma_crc64
+ .type lzma_crc64, @function
+
+ .align 16
+lzma_crc64:
+ /*
+ * Register usage:
+ * %eax crc LSB
+ * %edx crc MSB
+ * %esi buf
+ * %edi size or buf + size
+ * %ebx lzma_crc64_table
+ * %ebp Table index
+ * %ecx Temporary
+ */
+ pushl %ebx
+ pushl %esi
+ pushl %edi
+ pushl %ebp
+ movl 0x14(%esp), %esi /* buf */
+ movl 0x18(%esp), %edi /* size */
+ movl 0x1C(%esp), %eax /* crc LSB */
+ movl 0x20(%esp), %edx /* crc MSB */
+
+ /*
+ * Store the address of lzma_crc64_table to %ebx. This is needed to
+ * get position-independent code (PIC).
+ */
+ call .L_PIC
+.L_PIC:
+ popl %ebx
+ addl $_GLOBAL_OFFSET_TABLE_+[.-.L_PIC], %ebx
+ movl lzma_crc64_table@GOT(%ebx), %ebx
+
+ /* Complement the initial value. */
+ notl %eax
+ notl %edx
+
+.L_align:
+ /*
+ * Check if there is enough input to use slicing-by-four.
+ * We need eight bytes, because the loop pre-reads four bytes.
+ */
+ cmpl $8, %edi
+ jl .L_rest
+
+ /* Check if we have reached alignment of four bytes. */
+ testl $3, %esi
+ jz .L_slice
+
+ /* Calculate CRC of the next input byte. */
+ movzbl (%esi), %ebp
+ incl %esi
+ movzbl %al, %ecx
+ xorl %ecx, %ebp
+ shrdl $8, %edx, %eax
+ xorl (%ebx, %ebp, 8), %eax
+ shrl $8, %edx
+ xorl 4(%ebx, %ebp, 8), %edx
+ decl %edi
+ jmp .L_align
+
+.L_slice:
+ /*
+ * If we get here, there's at least eight bytes of aligned input
+ * available. Make %edi multiple of four bytes. Store the possible
+ * remainder over the "size" variable in the argument stack.
+ */
+ movl %edi, 0x18(%esp)
+ andl $-4, %edi
+ subl %edi, 0x18(%esp)
+
+ /*
+ * Let %edi be buf + size - 4 while running the main loop. This way
+ * we can compare for equality to determine when exit the loop.
+ */
+ addl %esi, %edi
+ subl $4, %edi
+
+ /* Read in the first four aligned bytes. */
+ movl (%esi), %ecx
+
+.L_loop:
+ xorl %eax, %ecx
+ movzbl %cl, %ebp
+ movl 0x1800(%ebx, %ebp, 8), %eax
+ xorl %edx, %eax
+ movl 0x1804(%ebx, %ebp, 8), %edx
+ movzbl %ch, %ebp
+ xorl 0x1000(%ebx, %ebp, 8), %eax
+ xorl 0x1004(%ebx, %ebp, 8), %edx
+ shrl $16, %ecx
+ movzbl %cl, %ebp
+ xorl 0x0800(%ebx, %ebp, 8), %eax
+ xorl 0x0804(%ebx, %ebp, 8), %edx
+ movzbl %ch, %ebp
+ addl $4, %esi
+ xorl (%ebx, %ebp, 8), %eax
+ xorl 4(%ebx, %ebp, 8), %edx
+
+ /* Check for end of aligned input. */
+ cmpl %edi, %esi
+
+ /*
+ * Copy the next input byte to %ecx. It is slightly faster to
+ * read it here than at the top of the loop.
+ */
+ movl (%esi), %ecx
+ jl .L_loop
+
+ /*
+ * Process the remaining four bytes, which we have already
+ * copied to %ecx.
+ */
+ xorl %eax, %ecx
+ movzbl %cl, %ebp
+ movl 0x1800(%ebx, %ebp, 8), %eax
+ xorl %edx, %eax
+ movl 0x1804(%ebx, %ebp, 8), %edx
+ movzbl %ch, %ebp
+ xorl 0x1000(%ebx, %ebp, 8), %eax
+ xorl 0x1004(%ebx, %ebp, 8), %edx
+ shrl $16, %ecx
+ movzbl %cl, %ebp
+ xorl 0x0800(%ebx, %ebp, 8), %eax
+ xorl 0x0804(%ebx, %ebp, 8), %edx
+ movzbl %ch, %ebp
+ addl $4, %esi
+ xorl (%ebx, %ebp, 8), %eax
+ xorl 4(%ebx, %ebp, 8), %edx
+
+ /* Copy the number of remaining bytes to %edi. */
+ movl 0x18(%esp), %edi
+
+.L_rest:
+ /* Check for end of input. */
+ testl %edi, %edi
+ jz .L_return
+
+ /* Calculate CRC of the next input byte. */
+ movzbl (%esi), %ebp
+ incl %esi
+ movzbl %al, %ecx
+ xorl %ecx, %ebp
+ shrdl $8, %edx, %eax
+ xorl (%ebx, %ebp, 8), %eax
+ shrl $8, %edx
+ xorl 4(%ebx, %ebp, 8), %edx
+ decl %edi
+ jmp .L_rest
+
+.L_return:
+ /* Complement the final value. */
+ notl %eax
+ notl %edx
+
+ popl %ebp
+ popl %edi
+ popl %esi
+ popl %ebx
+ ret
+
+ .size lzma_crc32, .-lzma_crc32
diff --git a/src/liblzma/check/crc_macros.h b/src/liblzma/check/crc_macros.h
new file mode 100644
index 0000000..5fbecf0
--- /dev/null
+++ b/src/liblzma/check/crc_macros.h
@@ -0,0 +1,33 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file crc_macros
+/// \brief Some endian-dependent macros for CRC32 and CRC64
+//
+// This code has been put into the public domain.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifdef WORDS_BIGENDIAN
+# include "check_byteswap.h"
+
+# define A(x) ((x) >> 24)
+# define B(x) (((x) >> 16) & 0xFF)
+# define C(x) (((x) >> 8) & 0xFF)
+# define D(x) ((x) & 0xFF)
+
+# define S8(x) ((x) << 8)
+# define S32(x) ((x) << 32)
+
+#else
+# define A(x) ((x) & 0xFF)
+# define B(x) (((x) >> 8) & 0xFF)
+# define C(x) (((x) >> 16) & 0xFF)
+# define D(x) ((x) >> 24)
+
+# define S8(x) ((x) >> 8)
+# define S32(x) ((x) >> 32)
+#endif
diff --git a/src/liblzma/check/sha256.c b/src/liblzma/check/sha256.c
new file mode 100644
index 0000000..8e3d375
--- /dev/null
+++ b/src/liblzma/check/sha256.c
@@ -0,0 +1,203 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file sha256.c
+/// \brief SHA256
+//
+// Based on the public domain code found from Wei Dai's Crypto++ library
+// version 5.5.1: http://www.cryptopp.com/
+// This code has been put into the public domain.
+//
+/// \todo Crypto++ has x86 ASM optimizations. They use SSE so if they
+/// are imported to liblzma, SSE instructions need to be used
+/// conditionally to keep the code working on older boxes.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "check.h"
+
+#ifndef WORDS_BIGENDIAN
+# include "check_byteswap.h"
+#endif
+
+// At least on x86, GCC is able to optimize this to a rotate instruction.
+#define rotr_32(num, amount) ((num) >> (amount) | (num) << (32 - (amount)))
+
+#define blk0(i) (W[i] = data[i])
+#define blk2(i) (W[i & 15] += s1(W[(i - 2) & 15]) + W[(i - 7) & 15] \
+ + s0(W[(i - 15) & 15]))
+
+#define Ch(x, y, z) (z ^ (x & (y ^ z)))
+#define Maj(x, y, z) ((x & y) | (z & (x | y)))
+
+#define a(i) T[(0 - i) & 7]
+#define b(i) T[(1 - i) & 7]
+#define c(i) T[(2 - i) & 7]
+#define d(i) T[(3 - i) & 7]
+#define e(i) T[(4 - i) & 7]
+#define f(i) T[(5 - i) & 7]
+#define g(i) T[(6 - i) & 7]
+#define h(i) T[(7 - i) & 7]
+
+#define R(i) \
+ h(i) += S1(e(i)) + Ch(e(i), f(i), g(i)) + SHA256_K[i + j] \
+ + (j ? blk2(i) : blk0(i)); \
+ d(i) += h(i); \
+ h(i) += S0(a(i)) + Maj(a(i), b(i), c(i))
+
+#define S0(x) (rotr_32(x, 2) ^ rotr_32(x, 13) ^ rotr_32(x, 22))
+#define S1(x) (rotr_32(x, 6) ^ rotr_32(x, 11) ^ rotr_32(x, 25))
+#define s0(x) (rotr_32(x, 7) ^ rotr_32(x, 18) ^ (x >> 3))
+#define s1(x) (rotr_32(x, 17) ^ rotr_32(x, 19) ^ (x >> 10))
+
+
+static const uint32_t SHA256_K[64] = {
+ 0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
+ 0x3956C25B, 0x59F111F1, 0x923F82A4, 0xAB1C5ED5,
+ 0xD807AA98, 0x12835B01, 0x243185BE, 0x550C7DC3,
+ 0x72BE5D74, 0x80DEB1FE, 0x9BDC06A7, 0xC19BF174,
+ 0xE49B69C1, 0xEFBE4786, 0x0FC19DC6, 0x240CA1CC,
+ 0x2DE92C6F, 0x4A7484AA, 0x5CB0A9DC, 0x76F988DA,
+ 0x983E5152, 0xA831C66D, 0xB00327C8, 0xBF597FC7,
+ 0xC6E00BF3, 0xD5A79147, 0x06CA6351, 0x14292967,
+ 0x27B70A85, 0x2E1B2138, 0x4D2C6DFC, 0x53380D13,
+ 0x650A7354, 0x766A0ABB, 0x81C2C92E, 0x92722C85,
+ 0xA2BFE8A1, 0xA81A664B, 0xC24B8B70, 0xC76C51A3,
+ 0xD192E819, 0xD6990624, 0xF40E3585, 0x106AA070,
+ 0x19A4C116, 0x1E376C08, 0x2748774C, 0x34B0BCB5,
+ 0x391C0CB3, 0x4ED8AA4A, 0x5B9CCA4F, 0x682E6FF3,
+ 0x748F82EE, 0x78A5636F, 0x84C87814, 0x8CC70208,
+ 0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2,
+};
+
+
+static void
+transform(uint32_t state[static 8], const uint32_t data[static 16])
+{
+ uint32_t W[16];
+ uint32_t T[8];
+
+ // Copy state[] to working vars.
+ memcpy(T, state, sizeof(T));
+
+ // 64 operations, partially loop unrolled
+ for (unsigned int j = 0; j < 64; j += 16) {
+ R( 0); R( 1); R( 2); R( 3);
+ R( 4); R( 5); R( 6); R( 7);
+ R( 8); R( 9); R(10); R(11);
+ R(12); R(13); R(14); R(15);
+ }
+
+ // Add the working vars back into state[].
+ state[0] += a(0);
+ state[1] += b(0);
+ state[2] += c(0);
+ state[3] += d(0);
+ state[4] += e(0);
+ state[5] += f(0);
+ state[6] += g(0);
+ state[7] += h(0);
+}
+
+
+static void
+process(lzma_sha256 *sha256)
+{
+#ifdef WORDS_BIGENDIAN
+ transform(sha256->state, (uint32_t *)(sha256->buffer));
+
+#else
+ uint32_t data[16];
+
+ for (size_t i = 0; i < 16; ++i)
+ data[i] = bswap_32(*((uint32_t*)(sha256->buffer) + i));
+
+ transform(sha256->state, data);
+#endif
+
+ return;
+}
+
+
+extern void
+lzma_sha256_init(lzma_sha256 *sha256)
+{
+ static const uint32_t s[8] = {
+ 0x6A09E667, 0xBB67AE85, 0x3C6EF372, 0xA54FF53A,
+ 0x510E527F, 0x9B05688C, 0x1F83D9AB, 0x5BE0CD19,
+ };
+
+ memcpy(sha256->state, s, sizeof(s));
+ sha256->size = 0;
+
+ return;
+}
+
+
+extern void
+lzma_sha256_update(const uint8_t *buf, size_t size, lzma_sha256 *sha256)
+{
+ // Copy the input data into a properly aligned temporary buffer.
+ // This way we can be called with arbitrarily sized buffers
+ // (no need to be multiple of 64 bytes), and the code works also
+ // on architectures that don't allow unaligned memory access.
+ while (size > 0) {
+ const size_t copy_start = sha256->size & 0x3F;
+ size_t copy_size = 64 - copy_start;
+ if (copy_size > size)
+ copy_size = size;
+
+ memcpy(sha256->buffer + copy_start, buf, copy_size);
+
+ buf += copy_size;
+ size -= copy_size;
+ sha256->size += copy_size;
+
+ if ((sha256->size & 0x3F) == 0)
+ process(sha256);
+ }
+
+ return;
+}
+
+
+extern void
+lzma_sha256_finish(lzma_sha256 *sha256)
+{
+ // Add padding as described in RFC 3174 (it describes SHA-1 but
+ // the same padding style is used for SHA-256 too).
+ size_t pos = sha256->size & 0x3F;
+ sha256->buffer[pos++] = 0x80;
+
+ while (pos != 64 - 8) {
+ if (pos == 64) {
+ process(sha256);
+ pos = 0;
+ }
+
+ sha256->buffer[pos++] = 0x00;
+ }
+
+ // Convert the message size from bytes to bits.
+ sha256->size *= 8;
+
+#ifdef WORDS_BIGENDIAN
+ *(uint64_t *)(sha256->buffer + 64 - 8) = sha256->size;
+#else
+ *(uint64_t *)(sha256->buffer + 64 - 8) = bswap_64(sha256->size);
+#endif
+
+ process(sha256);
+
+ for (size_t i = 0; i < 8; ++i)
+#ifdef WORDS_BIGENDIAN
+ ((uint32_t *)(sha256->buffer))[i] = sha256->state[i];
+#else
+ ((uint32_t *)(sha256->buffer))[i] = bswap_32(sha256->state[i]);
+#endif
+
+ return;
+}
diff --git a/src/liblzma/common/Makefile.am b/src/liblzma/common/Makefile.am
new file mode 100644
index 0000000..4eb9d54
--- /dev/null
+++ b/src/liblzma/common/Makefile.am
@@ -0,0 +1,94 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+noinst_LTLIBRARIES = libcommon.la
+libcommon_la_CPPFLAGS = \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_srcdir@/src/liblzma/check \
+ -I@top_srcdir@/src/liblzma/lz \
+ -I@top_srcdir@/src/liblzma/lzma \
+ -I@top_srcdir@/src/liblzma/simple \
+ -I@top_srcdir@/src/liblzma/subblock \
+ -I@top_srcdir@/src/liblzma/rangecoder
+libcommon_la_SOURCES = \
+ common.h \
+ sysdefs.h \
+ allocator.c \
+ block_private.h \
+ extra.c \
+ features.c \
+ index.c \
+ info.c \
+ init.c \
+ memory_limitter.c \
+ memory_usage.c \
+ next_coder.c \
+ raw_common.c \
+ raw_common.h \
+ code.c \
+ version.c
+
+if COND_FILTER_COPY
+libcommon_la_SOURCES += \
+ copy_coder.c \
+ copy_coder.h
+endif
+
+if COND_FILTER_DELTA
+libcommon_la_SOURCES += \
+ delta_coder.c \
+ delta_coder.h
+endif
+
+if COND_MAIN_ENCODER
+libcommon_la_SOURCES += \
+ alignment.c \
+ auto_decoder.c \
+ alone_encoder.c \
+ block_encoder.c \
+ block_encoder.h \
+ block_header_encoder.c \
+ filter_flags_encoder.c \
+ init_encoder.c \
+ metadata_encoder.c \
+ metadata_encoder.h \
+ raw_encoder.c \
+ raw_encoder.h \
+ stream_common.c \
+ stream_common.h \
+ stream_encoder_single.c \
+ stream_encoder_multi.c \
+ stream_flags_encoder.c \
+ vli_encoder.c
+endif
+
+if COND_MAIN_DECODER
+libcommon_la_SOURCES += \
+ alone_decoder.c \
+ alone_decoder.h \
+ block_decoder.c \
+ block_decoder.h \
+ block_header_decoder.c \
+ filter_flags_decoder.c \
+ init_decoder.c \
+ metadata_decoder.c \
+ metadata_decoder.h \
+ raw_decoder.c \
+ raw_decoder.h \
+ stream_decoder.c \
+ stream_flags_decoder.c \
+ stream_flags_decoder.h \
+ vli_decoder.c \
+ vli_reverse_decoder.c
+endif
diff --git a/src/liblzma/common/alignment.c b/src/liblzma/common/alignment.c
new file mode 100644
index 0000000..2d468fe
--- /dev/null
+++ b/src/liblzma/common/alignment.c
@@ -0,0 +1,118 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file alignment.c
+/// \brief Calculates preferred alignments of different filters
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API uint32_t
+lzma_alignment_input(const lzma_options_filter *filters, uint32_t guess)
+{
+ for (size_t i = 0; filters[i].id != LZMA_VLI_VALUE_UNKNOWN; ++i) {
+ switch (filters[i].id) {
+ case LZMA_FILTER_COPY:
+ case LZMA_FILTER_DELTA:
+ // The same as the input, check the next filter.
+ continue;
+
+ case LZMA_FILTER_SUBBLOCK:
+ if (filters[i].options == NULL)
+ return LZMA_SUBBLOCK_ALIGNMENT_DEFAULT;
+ else
+ return ((const lzma_options_subblock *)(
+ filters[i].options))->alignment;
+
+ case LZMA_FILTER_X86:
+ return 1;
+
+ case LZMA_FILTER_ARMTHUMB:
+ return 2;
+
+ case LZMA_FILTER_POWERPC:
+ case LZMA_FILTER_ARM:
+ case LZMA_FILTER_SPARC:
+ return 4;
+
+ case LZMA_FILTER_IA64:
+ return 16;
+
+ case LZMA_FILTER_LZMA: {
+ const lzma_options_lzma *lzma = filters[i].options;
+ return 1 << MAX(lzma->pos_bits,
+ lzma->literal_pos_bits);
+ }
+
+ default:
+ return UINT32_MAX;
+ }
+ }
+
+ return guess;
+}
+
+
+extern LZMA_API uint32_t
+lzma_alignment_output(const lzma_options_filter *filters, uint32_t guess)
+{
+ // Check if there is only an implicit Copy filter.
+ if (filters[0].id == LZMA_VLI_VALUE_UNKNOWN)
+ return guess;
+
+ // Find the last filter in the chain.
+ size_t i = 0;
+ while (filters[i + 1].id != LZMA_VLI_VALUE_UNKNOWN)
+ ++i;
+
+ do {
+ switch (filters[i].id) {
+ case LZMA_FILTER_COPY:
+ case LZMA_FILTER_DELTA:
+ // It's the same as the input alignment, so
+ // check the next filter.
+ continue;
+
+ case LZMA_FILTER_SUBBLOCK:
+ if (filters[i].options == NULL)
+ return LZMA_SUBBLOCK_ALIGNMENT_DEFAULT;
+ else
+ return ((const lzma_options_subblock *)(
+ filters[i].options))->alignment;
+
+ case LZMA_FILTER_X86:
+ case LZMA_FILTER_LZMA:
+ return 1;
+
+ case LZMA_FILTER_ARMTHUMB:
+ return 2;
+
+ case LZMA_FILTER_POWERPC:
+ case LZMA_FILTER_ARM:
+ case LZMA_FILTER_SPARC:
+ return 4;
+
+ case LZMA_FILTER_IA64:
+ return 16;
+
+ default:
+ return UINT32_MAX;
+ }
+ } while (i-- != 0);
+
+ // If we get here, we have the same alignment as the input data.
+ return guess;
+}
diff --git a/src/liblzma/common/allocator.c b/src/liblzma/common/allocator.c
new file mode 100644
index 0000000..edea0f6
--- /dev/null
+++ b/src/liblzma/common/allocator.c
@@ -0,0 +1,57 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file allocator.c
+/// \brief Allocating and freeing memory
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+#undef lzma_free
+
+extern void * lzma_attribute((malloc))
+lzma_alloc(size_t size, lzma_allocator *allocator)
+{
+ // Some malloc() variants return NULL if called with size == 0.
+ if (size == 0)
+ size = 1;
+
+ void *ptr;
+
+ if (allocator != NULL && allocator->alloc != NULL)
+ ptr = allocator->alloc(allocator->opaque, 1, size);
+ else
+ ptr = malloc(size);
+
+#if !defined(NDEBUG) && defined(HAVE_MEMSET)
+ // This helps to catch some stupid mistakes.
+ if (ptr != NULL)
+ memset(ptr, 0xFD, size);
+#endif
+
+ return ptr;
+}
+
+
+extern void
+lzma_free(void *ptr, lzma_allocator *allocator)
+{
+ if (allocator != NULL && allocator->free != NULL)
+ allocator->free(allocator->opaque, ptr);
+ else
+ free(ptr);
+
+ return;
+}
diff --git a/src/liblzma/common/alone_decoder.c b/src/liblzma/common/alone_decoder.c
new file mode 100644
index 0000000..092047b
--- /dev/null
+++ b/src/liblzma/common/alone_decoder.c
@@ -0,0 +1,197 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file alone_decoder.c
+/// \brief Decoder for LZMA_Alone files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "alone_decoder.h"
+#include "lzma_decoder.h"
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+
+ enum {
+ SEQ_PROPERTIES,
+ SEQ_DICTIONARY_SIZE,
+ SEQ_UNCOMPRESSED_SIZE,
+ SEQ_CODER_INIT,
+ SEQ_CODE,
+ } sequence;
+
+ size_t pos;
+
+ lzma_options_alone options;
+};
+
+
+static lzma_ret
+alone_decode(lzma_coder *coder,
+ lzma_allocator *allocator lzma_attribute((unused)),
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action)
+{
+ while (*out_pos < out_size
+ && (coder->sequence == SEQ_CODE || *in_pos < in_size))
+ switch (coder->sequence) {
+ case SEQ_PROPERTIES:
+ if (lzma_lzma_decode_properties(
+ &coder->options.lzma, in[*in_pos]))
+ return LZMA_DATA_ERROR;
+
+ coder->sequence = SEQ_DICTIONARY_SIZE;
+ ++*in_pos;
+ break;
+
+ case SEQ_DICTIONARY_SIZE:
+ coder->options.lzma.dictionary_size
+ |= (size_t)(in[*in_pos]) << (coder->pos * 8);
+
+ if (++coder->pos == 4) {
+ // A hack to ditch tons of false positives: We allow
+ // only dictionary sizes that are a power of two.
+ // LZMA_Alone didn't create other kinds of files,
+ // although it's not impossible that files with
+ // other dictionary sizes exist. Well, if someone
+ // complains, this will be reconsidered.
+ size_t count = 0;
+ for (size_t i = 0; i < 32; ++i)
+ if (coder->options.lzma.dictionary_size
+ & (UINT32_C(1) << i))
+ ++count;
+
+ if (count > 1)
+ return LZMA_DATA_ERROR;
+
+ coder->pos = 0;
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ }
+
+ ++*in_pos;
+ break;
+
+ case SEQ_UNCOMPRESSED_SIZE:
+ coder->options.uncompressed_size
+ |= (lzma_vli)(in[*in_pos]) << (coder->pos * 8);
+
+ if (++coder->pos == 8) {
+ // Another hack to ditch false positives: Assume that
+ // if the uncompressed size is known, it must be less
+ // than 256 GiB. Again, if someone complains, this
+ // will be reconsidered.
+ if (coder->options.uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && coder->options.uncompressed_size
+ >= (LZMA_VLI_C(1) << 38))
+ return LZMA_DATA_ERROR;
+
+ coder->pos = 0;
+ coder->sequence = SEQ_CODER_INIT;
+ }
+
+ ++*in_pos;
+ break;
+
+ case SEQ_CODER_INIT: {
+ // Two is enough because there won't be implicit filters.
+ lzma_filter_info filters[2] = {
+ {
+ .init = &lzma_lzma_decoder_init,
+ .options = &coder->options.lzma,
+ .uncompressed_size = coder->options
+ .uncompressed_size,
+ }, {
+ .init = NULL,
+ }
+ };
+
+ const lzma_ret ret = lzma_next_filter_init(&coder->next,
+ allocator, filters);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_CODE;
+ }
+
+ // Fall through
+
+ case SEQ_CODE: {
+ return coder->next.code(coder->next.coder,
+ allocator, in, in_pos, in_size,
+ out, out_pos, out_size, action);
+ }
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+alone_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+alone_decoder_init(lzma_next_coder *next, lzma_allocator *allocator)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &alone_decode;
+ next->end = &alone_decoder_end;
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ next->coder->sequence = SEQ_PROPERTIES;
+ next->coder->pos = 0;
+ next->coder->options.lzma.dictionary_size = 0;
+ next->coder->options.uncompressed_size = 0;
+
+ return LZMA_OK;
+}
+
+
+extern lzma_ret
+lzma_alone_decoder_init(lzma_next_coder *next, lzma_allocator *allocator)
+{
+ // We need to use _init2 because we don't pass any varadic args.
+ lzma_next_coder_init2(next, allocator, alone_decoder_init,
+ alone_decoder_init, allocator);
+}
+
+
+extern LZMA_API lzma_ret
+lzma_alone_decoder(lzma_stream *strm)
+{
+ lzma_next_strm_init2(strm, alone_decoder_init,
+ alone_decoder_init, strm->allocator);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/alone_decoder.h b/src/liblzma/common/alone_decoder.h
new file mode 100644
index 0000000..a9b7e84
--- /dev/null
+++ b/src/liblzma/common/alone_decoder.h
@@ -0,0 +1,24 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file alone_decoder.h
+/// \brief Decoder for LZMA_Alone files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern lzma_ret lzma_alone_decoder_init(
+ lzma_next_coder *next, lzma_allocator *allocator);
diff --git a/src/liblzma/common/alone_encoder.c b/src/liblzma/common/alone_encoder.c
new file mode 100644
index 0000000..7629aa7
--- /dev/null
+++ b/src/liblzma/common/alone_encoder.c
@@ -0,0 +1,167 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file alone_decoder.c
+/// \brief Decoder for LZMA_Alone files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "lzma_encoder.h"
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+
+ enum {
+ SEQ_PROPERTIES,
+ SEQ_DICTIONARY_SIZE,
+ SEQ_UNCOMPRESSED_SIZE,
+ SEQ_CODE,
+ } sequence;
+
+ size_t pos;
+
+ lzma_options_alone options;
+};
+
+
+static lzma_ret
+alone_encode(lzma_coder *coder,
+ lzma_allocator *allocator lzma_attribute((unused)),
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action)
+{
+ while (*out_pos < out_size)
+ switch (coder->sequence) {
+ case SEQ_PROPERTIES:
+ if (lzma_lzma_encode_properties(
+ &coder->options.lzma, out + *out_pos)) {
+ return LZMA_PROG_ERROR;
+ }
+
+ coder->sequence = SEQ_DICTIONARY_SIZE;
+ ++*out_pos;
+ break;
+
+ case SEQ_DICTIONARY_SIZE:
+ out[*out_pos] = coder->options.lzma.dictionary_size
+ >> (coder->pos * 8);
+
+ if (++coder->pos == 4) {
+ coder->pos = 0;
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ }
+
+ ++*out_pos;
+ break;
+
+ case SEQ_UNCOMPRESSED_SIZE:
+ out[*out_pos] = coder->options.uncompressed_size
+ >> (coder->pos * 8);
+
+ if (++coder->pos == 8) {
+ coder->pos = 0;
+ coder->sequence = SEQ_CODE;
+ }
+
+ ++*out_pos;
+ break;
+
+ case SEQ_CODE: {
+ return coder->next.code(coder->next.coder,
+ allocator, in, in_pos, in_size,
+ out, out_pos, out_size, action);
+ }
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+alone_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+// At least for now, this is not used by any internal function.
+static lzma_ret
+alone_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_options_alone *options)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &alone_encode;
+ next->end = &alone_encoder_end;
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ // Initialize the LZMA_Alone coder variables.
+ next->coder->sequence = SEQ_PROPERTIES;
+ next->coder->pos = 0;
+ next->coder->options = *options;
+
+ // Verify uncompressed_size since the other functions assume that
+ // it is valid.
+ if (!lzma_vli_is_valid(next->coder->options.uncompressed_size))
+ return LZMA_PROG_ERROR;
+
+ // Initialize the LZMA encoder.
+ const lzma_filter_info filters[2] = {
+ {
+ .init = &lzma_lzma_encoder_init,
+ .options = &next->coder->options.lzma,
+ .uncompressed_size = next->coder->options
+ .uncompressed_size,
+ }, {
+ .init = NULL,
+ }
+ };
+
+ return lzma_next_filter_init(&next->coder->next, allocator, filters);
+}
+
+
+/*
+extern lzma_ret
+lzma_alone_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_options_alone *options)
+{
+ lzma_next_coder_init(alone_encoder_init, next, allocator, options);
+}
+*/
+
+
+extern LZMA_API lzma_ret
+lzma_alone_encoder(lzma_stream *strm, const lzma_options_alone *options)
+{
+ lzma_next_strm_init(strm, alone_encoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_FINISH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/auto_decoder.c b/src/liblzma/common/auto_decoder.c
new file mode 100644
index 0000000..7e92df9
--- /dev/null
+++ b/src/liblzma/common/auto_decoder.c
@@ -0,0 +1,113 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file auto_decoder.c
+/// \brief Autodetect between .lzma Stream and LZMA_Alone formats
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "alone_decoder.h"
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+
+ lzma_extra **header;
+ lzma_extra **footer;
+ bool initialized;
+};
+
+
+static lzma_ret
+auto_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ if (!coder->initialized) {
+ if (*in_pos >= in_size)
+ return LZMA_OK;
+
+ lzma_ret ret;
+
+ if (in[*in_pos] == 0xFF)
+ ret = lzma_stream_decoder_init(&coder->next, allocator,
+ coder->header, coder->footer);
+ else
+ ret = lzma_alone_decoder_init(&coder->next, allocator);
+
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->initialized = true;
+ }
+
+ return coder->next.code(coder->next.coder, allocator,
+ in, in_pos, in_size, out, out_pos, out_size, action);
+}
+
+
+static void
+auto_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+auto_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_extra **header, lzma_extra **footer)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &auto_decode;
+ next->end = &auto_decoder_end;
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ next->coder->header = header;
+ next->coder->footer = footer;
+ next->coder->initialized = false;
+
+ return LZMA_OK;
+}
+
+
+/*
+extern lzma_ret
+lzma_auto_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_extra **header, lzma_extra **footer)
+{
+ lzma_next_coder_init(
+ auto_decoder_init, next, allocator, header, footer);
+}
+*/
+
+
+extern LZMA_API lzma_ret
+lzma_auto_decoder(lzma_stream *strm, lzma_extra **header, lzma_extra **footer)
+{
+ lzma_next_strm_init(strm, auto_decoder_init, header, footer);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/block_decoder.c b/src/liblzma/common/block_decoder.c
new file mode 100644
index 0000000..b9dcde4
--- /dev/null
+++ b/src/liblzma/common/block_decoder.c
@@ -0,0 +1,405 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file block_decoder.c
+/// \brief Decodes .lzma Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "block_decoder.h"
+#include "block_private.h"
+#include "raw_decoder.h"
+#include "check.h"
+
+
+struct lzma_coder_s {
+ enum {
+ SEQ_CODE,
+ SEQ_CHECK,
+ SEQ_UNCOMPRESSED_SIZE,
+ SEQ_BACKWARD_SIZE,
+ SEQ_PADDING,
+ SEQ_END,
+ } sequence;
+
+ /// The filters in the chain; initialized with lzma_raw_decoder_init().
+ lzma_next_coder next;
+
+ /// Decoding options; we also write Total Size, Compressed Size, and
+ /// Uncompressed Size back to this structure when the encoding has
+ /// been finished.
+ lzma_options_block *options;
+
+ /// Position in variable-length integers (and in some other places).
+ size_t pos;
+
+ /// Check of the uncompressed data
+ lzma_check check;
+
+ /// Total Size calculated while encoding
+ lzma_vli total_size;
+
+ /// Compressed Size calculated while encoding
+ lzma_vli compressed_size;
+
+ /// Uncompressed Size calculated while encoding
+ lzma_vli uncompressed_size;
+
+ /// Maximum allowed total_size
+ lzma_vli total_limit;
+
+ /// Maximum allowed uncompressed_size
+ lzma_vli uncompressed_limit;
+
+ /// Temporary location for the Uncompressed Size and Backward Size
+ /// fields in Block Footer.
+ lzma_vli tmp;
+
+ /// Size of the Backward Size field - This is needed so that we
+ /// can verify the Backward Size and still keep updating total_size.
+ size_t size_of_backward_size;
+};
+
+
+static lzma_ret
+update_sequence(lzma_coder *coder)
+{
+ switch (coder->sequence) {
+ case SEQ_CODE:
+ if (coder->options->check != LZMA_CHECK_NONE) {
+ lzma_check_finish(&coder->check,
+ coder->options->check);
+ coder->sequence = SEQ_CHECK;
+ break;
+ }
+
+ // Fall through
+
+ case SEQ_CHECK:
+ if (coder->options->has_uncompressed_size_in_footer) {
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ break;
+ }
+
+ // Fall through
+
+ case SEQ_UNCOMPRESSED_SIZE:
+ if (coder->options->has_backward_size) {
+ coder->sequence = SEQ_BACKWARD_SIZE;
+ break;
+ }
+
+ // Fall through
+
+ case SEQ_BACKWARD_SIZE:
+ if (coder->options->handle_padding) {
+ coder->sequence = SEQ_PADDING;
+ break;
+ }
+
+ case SEQ_PADDING:
+ if (!is_size_valid(coder->total_size,
+ coder->options->total_size)
+ || !is_size_valid(coder->compressed_size,
+ coder->options->compressed_size)
+ || !is_size_valid(coder->uncompressed_size,
+ coder->options->uncompressed_size))
+ return LZMA_DATA_ERROR;
+
+ // Copy the values into coder->options. The caller
+ // may use this information to construct Index.
+ coder->options->total_size = coder->total_size;
+ coder->options->compressed_size = coder->compressed_size;
+ coder->options->uncompressed_size = coder->uncompressed_size;
+
+ return LZMA_STREAM_END;
+
+ default:
+ assert(0);
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+block_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ // Special case when the Block has only Block Header.
+ if (coder->sequence == SEQ_END)
+ return LZMA_STREAM_END;
+
+ // FIXME: Termination condition should work but could be cleaner.
+ while (*out_pos < out_size && (*in_pos < in_size
+ || coder->sequence == SEQ_CODE))
+ switch (coder->sequence) {
+ case SEQ_CODE: {
+ const size_t in_start = *in_pos;
+ const size_t out_start = *out_pos;
+
+ lzma_ret ret = coder->next.code(coder->next.coder,
+ allocator, in, in_pos, in_size,
+ out, out_pos, out_size, action);
+
+ const size_t in_used = *in_pos - in_start;
+ const size_t out_used = *out_pos - out_start;
+
+ if (update_size(&coder->total_size, in_used,
+ coder->total_limit)
+ || update_size(&coder->compressed_size,
+ in_used,
+ coder->options->compressed_size)
+ || update_size(&coder->uncompressed_size,
+ out_used, coder->uncompressed_limit))
+ return LZMA_DATA_ERROR;
+
+ lzma_check_update(&coder->check, coder->options->check,
+ out + out_start, out_used);
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ ret = update_sequence(coder);
+ if (ret != LZMA_OK)
+ return ret;
+
+ break;
+ }
+
+ case SEQ_CHECK:
+ switch (coder->options->check) {
+ case LZMA_CHECK_CRC32:
+ if (((coder->check.crc32 >> (coder->pos * 8))
+ & 0xFF) != in[*in_pos])
+ return LZMA_DATA_ERROR;
+ break;
+
+ case LZMA_CHECK_CRC64:
+ if (((coder->check.crc64 >> (coder->pos * 8))
+ & 0xFF) != in[*in_pos])
+ return LZMA_DATA_ERROR;
+ break;
+
+ case LZMA_CHECK_SHA256:
+ if (coder->check.sha256.buffer[coder->pos]
+ != in[*in_pos])
+ return LZMA_DATA_ERROR;
+ break;
+
+ default:
+ assert(coder->options->check != LZMA_CHECK_NONE);
+ assert(coder->options->check <= LZMA_CHECK_ID_MAX);
+ break;
+ }
+
+ if (update_size(&coder->total_size, 1, coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+
+ if (++coder->pos == lzma_check_sizes[coder->options->check]) {
+ const lzma_ret ret = update_sequence(coder);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->pos = 0;
+ }
+
+ break;
+
+ case SEQ_UNCOMPRESSED_SIZE: {
+ const size_t in_start = *in_pos;
+
+ lzma_ret ret = lzma_vli_decode(&coder->tmp,
+ &coder->pos, in, in_pos, in_size);
+
+ if (update_size(&coder->total_size, *in_pos - in_start,
+ coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ if (coder->tmp != coder->uncompressed_size)
+ return LZMA_DATA_ERROR;
+
+ coder->pos = 0;
+ coder->tmp = 0;
+
+ ret = update_sequence(coder);
+ if (ret != LZMA_OK)
+ return ret;
+
+ break;
+ }
+
+ case SEQ_BACKWARD_SIZE: {
+ const size_t in_start = *in_pos;
+
+ lzma_ret ret = lzma_vli_decode(&coder->tmp,
+ &coder->pos, in, in_pos, in_size);
+
+ const size_t in_used = *in_pos - in_start;
+
+ if (update_size(&coder->total_size, in_used,
+ coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ coder->size_of_backward_size += in_used;
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ if (coder->tmp != coder->total_size
+ - coder->size_of_backward_size)
+ return LZMA_DATA_ERROR;
+
+ ret = update_sequence(coder);
+ if (ret != LZMA_OK)
+ return ret;
+
+ break;
+ }
+
+ case SEQ_PADDING:
+ if (in[*in_pos] == 0x00) {
+ if (update_size(&coder->total_size, 1,
+ coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+ break;
+ }
+
+ return update_sequence(coder);
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+block_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_block_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options)
+{
+ // This is pretty similar to lzma_block_encoder_init().
+ // See comments there.
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &block_decode;
+ next->end = &block_decoder_end;
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ if (!lzma_vli_is_valid(options->total_size)
+ || !lzma_vli_is_valid(options->compressed_size)
+ || !lzma_vli_is_valid(options->uncompressed_size)
+ || !lzma_vli_is_valid(options->total_size)
+ || !lzma_vli_is_valid(options->total_limit)
+ || !lzma_vli_is_valid(options->uncompressed_limit)
+ || (options->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && options->uncompressed_size
+ > options->uncompressed_limit)
+ || (options->total_size != LZMA_VLI_VALUE_UNKNOWN
+ && options->total_size
+ > options->total_limit)
+ || (!options->has_eopm && options->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN)
+ || options->header_size > options->total_size
+ || (options->handle_padding
+ && (options->has_uncompressed_size_in_footer
+ || options->has_backward_size)))
+ return LZMA_PROG_ERROR;
+
+ {
+ const lzma_ret ret = lzma_check_init(
+ &next->coder->check, options->check);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ if (!options->has_eopm && options->uncompressed_size == 0) {
+ if (!is_size_valid(0, options->compressed_size))
+ return LZMA_PROG_ERROR;
+
+ if (options->check != LZMA_CHECK_NONE) {
+ lzma_check_finish(&next->coder->check, options->check);
+ next->coder->sequence = SEQ_CHECK;
+ } else if (options->handle_padding) {
+ next->coder->sequence = SEQ_PADDING;
+ } else {
+ next->coder->sequence = SEQ_END;
+ }
+ } else {
+ next->coder->sequence = SEQ_CODE;
+ }
+
+ {
+ const lzma_ret ret = lzma_raw_decoder_init(
+ &next->coder->next, allocator,
+ options->filters, options->has_eopm
+ ? LZMA_VLI_VALUE_UNKNOWN
+ : options->uncompressed_size,
+ true);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ next->coder->options = options;
+ next->coder->pos = 0;
+ next->coder->total_size = options->header_size;
+ next->coder->compressed_size = 0;
+ next->coder->uncompressed_size = 0;
+ next->coder->total_limit
+ = MIN(options->total_size, options->total_limit);
+ next->coder->uncompressed_limit = MIN(options->uncompressed_size,
+ options->uncompressed_limit);
+ next->coder->tmp = 0;
+ next->coder->size_of_backward_size = 0;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_block_decoder(lzma_stream *strm, lzma_options_block *options)
+{
+ lzma_next_strm_init(strm, lzma_block_decoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/block_decoder.h b/src/liblzma/common/block_decoder.h
new file mode 100644
index 0000000..af71128
--- /dev/null
+++ b/src/liblzma/common/block_decoder.h
@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file block_decoder.h
+/// \brief Decodes .lzma Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BLOCK_DECODER_H
+#define LZMA_BLOCK_DECODER_H
+
+#include "common.h"
+
+
+extern lzma_ret lzma_block_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_options_block *options);
+
+#endif
diff --git a/src/liblzma/common/block_encoder.c b/src/liblzma/common/block_encoder.c
new file mode 100644
index 0000000..77ff78e
--- /dev/null
+++ b/src/liblzma/common/block_encoder.c
@@ -0,0 +1,375 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file block_encoder.c
+/// \brief Encodes .lzma Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "block_encoder.h"
+#include "block_private.h"
+#include "raw_encoder.h"
+#include "check.h"
+
+
+struct lzma_coder_s {
+ /// The filters in the chain; initialized with lzma_raw_decoder_init().
+ lzma_next_coder next;
+
+ /// Encoding options; we also write Total Size, Compressed Size, and
+ /// Uncompressed Size back to this structure when the encoding has
+ /// been finished.
+ lzma_options_block *options;
+
+ enum {
+ SEQ_CODE,
+ SEQ_CHECK_FINISH,
+ SEQ_CHECK_COPY,
+ SEQ_UNCOMPRESSED_SIZE,
+ SEQ_BACKWARD_SIZE,
+ SEQ_PADDING,
+ } sequence;
+
+ /// Position in .header and .check.
+ size_t pos;
+
+ /// Check of the uncompressed data
+ lzma_check check;
+
+ /// Total Size calculated while encoding
+ lzma_vli total_size;
+
+ /// Compressed Size calculated while encoding
+ lzma_vli compressed_size;
+
+ /// Uncompressed Size calculated while encoding
+ lzma_vli uncompressed_size;
+
+ /// Maximum allowed total_size
+ lzma_vli total_limit;
+
+ /// Maximum allowed uncompressed_size
+ lzma_vli uncompressed_limit;
+
+ /// Backward Size - This is a copy of total_size right before
+ /// the Backward Size field.
+ lzma_vli backward_size;
+};
+
+
+static lzma_ret
+block_encode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ // Check that our amount of input stays in proper limits.
+ if (coder->options->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ if (action == LZMA_FINISH) {
+ if (coder->options->uncompressed_size
+ - coder->uncompressed_size
+ != (lzma_vli)(in_size - *in_pos))
+ return LZMA_DATA_ERROR;
+ } else {
+ if (coder->options->uncompressed_size
+ - coder->uncompressed_size
+ < (lzma_vli)(in_size - *in_pos))
+ return LZMA_DATA_ERROR;
+ }
+ } else if (LZMA_VLI_VALUE_MAX - coder->uncompressed_size
+ < (lzma_vli)(in_size - *in_pos)) {
+ return LZMA_DATA_ERROR;
+ }
+
+ // Main loop
+ while (*out_pos < out_size
+ && (*in_pos < in_size || action == LZMA_FINISH))
+ switch (coder->sequence) {
+ case SEQ_CODE: {
+ const size_t in_start = *in_pos;
+ const size_t out_start = *out_pos;
+
+ const lzma_ret ret = coder->next.code(coder->next.coder,
+ allocator, in, in_pos, in_size,
+ out, out_pos, out_size, action);
+
+ const size_t in_used = *in_pos - in_start;
+ const size_t out_used = *out_pos - out_start;
+
+ if (update_size(&coder->total_size, out_used,
+ coder->total_limit)
+ || update_size(&coder->compressed_size,
+ out_used,
+ coder->options->compressed_size))
+ return LZMA_DATA_ERROR;
+
+ // No need to check for overflow because we have already
+ // checked it at the beginning of this function.
+ coder->uncompressed_size += in_used;
+
+ lzma_check_update(&coder->check, coder->options->check,
+ in + in_start, in_used);
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ assert(*in_pos == in_size);
+
+ // Compressed and Uncompressed Sizes are now at their final
+ // values. Verify that they match the values give to us.
+ if (!is_size_valid(coder->compressed_size,
+ coder->options->compressed_size)
+ || !is_size_valid(coder->uncompressed_size,
+ coder->options->uncompressed_size))
+ return LZMA_DATA_ERROR;
+
+ coder->sequence = SEQ_CHECK_FINISH;
+ break;
+ }
+
+ case SEQ_CHECK_FINISH:
+ if (coder->options->check == LZMA_CHECK_NONE) {
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ break;
+ }
+
+ lzma_check_finish(&coder->check, coder->options->check);
+ coder->sequence = SEQ_CHECK_COPY;
+
+ // Fall through
+
+ case SEQ_CHECK_COPY:
+ assert(lzma_check_sizes[coder->options->check] > 0);
+
+ switch (coder->options->check) {
+ case LZMA_CHECK_CRC32:
+ out[*out_pos] = coder->check.crc32 >> (coder->pos * 8);
+ break;
+
+ case LZMA_CHECK_CRC64:
+ out[*out_pos] = coder->check.crc64 >> (coder->pos * 8);
+ break;
+
+ case LZMA_CHECK_SHA256:
+ out[*out_pos] = coder->check.sha256.buffer[coder->pos];
+ break;
+
+ default:
+ assert(0);
+ return LZMA_PROG_ERROR;
+ }
+
+ ++*out_pos;
+
+ if (update_size(&coder->total_size, 1, coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ if (++coder->pos == lzma_check_sizes[coder->options->check]) {
+ coder->pos = 0;
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ }
+
+ break;
+
+ case SEQ_UNCOMPRESSED_SIZE:
+ if (coder->options->has_uncompressed_size_in_footer) {
+ const size_t out_start = *out_pos;
+
+ const lzma_ret ret = lzma_vli_encode(
+ coder->uncompressed_size,
+ &coder->pos, 1,
+ out, out_pos, out_size);
+
+ // Updating the size this way instead of doing in a
+ // single chunk using lzma_vli_size(), because this
+ // way we detect when exactly we are going out of
+ // our limits.
+ if (update_size(&coder->total_size,
+ *out_pos - out_start,
+ coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ coder->pos = 0;
+ }
+
+ coder->backward_size = coder->total_size;
+ coder->sequence = SEQ_BACKWARD_SIZE;
+ break;
+
+ case SEQ_BACKWARD_SIZE:
+ if (coder->options->has_backward_size) {
+ const size_t out_start = *out_pos;
+
+ const lzma_ret ret = lzma_vli_encode(
+ coder->backward_size, &coder->pos, 1,
+ out, out_pos, out_size);
+
+ if (update_size(&coder->total_size,
+ *out_pos - out_start,
+ coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+ }
+
+ coder->sequence = SEQ_PADDING;
+ break;
+
+ case SEQ_PADDING:
+ if (coder->options->handle_padding) {
+ assert(!coder->options
+ ->has_uncompressed_size_in_footer);
+ assert(!coder->options->has_backward_size);
+ assert(coder->options->total_size != LZMA_VLI_VALUE_UNKNOWN);
+
+ if (coder->total_size < coder->options->total_size) {
+ out[*out_pos] = 0x00;
+ ++*out_pos;
+
+ if (update_size(&coder->total_size, 1,
+ coder->total_limit))
+ return LZMA_DATA_ERROR;
+
+ break;
+ }
+ }
+
+ // Now also Total Size is known. Verify it.
+ if (!is_size_valid(coder->total_size,
+ coder->options->total_size))
+ return LZMA_DATA_ERROR;
+
+ // Copy the values into coder->options. The caller
+ // may use this information to construct Index.
+ coder->options->total_size = coder->total_size;
+ coder->options->compressed_size = coder->compressed_size;
+ coder->options->uncompressed_size = coder->uncompressed_size;
+
+ return LZMA_STREAM_END;
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+block_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+block_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options)
+{
+ // Validate some options.
+ if (options == NULL
+ || !lzma_vli_is_valid(options->total_size)
+ || !lzma_vli_is_valid(options->compressed_size)
+ || !lzma_vli_is_valid(options->uncompressed_size)
+ || !lzma_vli_is_valid(options->total_size)
+ || !lzma_vli_is_valid(options->total_limit)
+ || !lzma_vli_is_valid(options->uncompressed_limit)
+ || (options->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && options->uncompressed_size
+ > options->uncompressed_limit)
+ || (options->total_size != LZMA_VLI_VALUE_UNKNOWN
+ && options->total_size
+ > options->total_limit)
+ || (!options->has_eopm && options->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN)
+ || (options->handle_padding && (options->total_size
+ == LZMA_VLI_VALUE_UNKNOWN
+ || options->has_uncompressed_size_in_footer
+ || options->has_backward_size))
+ || options->header_size > options->total_size)
+ return LZMA_PROG_ERROR;
+
+ // Allocate and initialize *next->coder if needed.
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &block_encode;
+ next->end = &block_encoder_end;
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ // Initialize the check.
+ return_if_error(lzma_check_init(&next->coder->check, options->check));
+
+ // If End of Payload Marker is not used and Uncompressed Size is zero,
+ // Compressed Data is empty. That is, we don't call the encoder at all.
+ // We initialize it though; it allows detecting invalid options.
+ if (!options->has_eopm && options->uncompressed_size == 0) {
+ // Also Compressed Size must also be zero if it has been
+ // given to us.
+ if (!is_size_valid(options->compressed_size, 0))
+ return LZMA_PROG_ERROR;
+
+ next->coder->sequence = SEQ_CHECK_FINISH;
+ } else {
+ next->coder->sequence = SEQ_CODE;
+ }
+
+ // Other initializations
+ next->coder->options = options;
+ next->coder->pos = 0;
+ next->coder->total_size = options->header_size;
+ next->coder->compressed_size = 0;
+ next->coder->uncompressed_size = 0;
+ next->coder->total_limit
+ = MIN(options->total_size, options->total_limit);
+ next->coder->uncompressed_limit = MIN(options->uncompressed_size,
+ options->uncompressed_limit);
+
+ // Initialize the requested filters.
+ return lzma_raw_encoder_init(&next->coder->next, allocator,
+ options->filters, options->has_eopm
+ ? LZMA_VLI_VALUE_UNKNOWN
+ : options->uncompressed_size,
+ true);
+}
+
+
+extern lzma_ret
+lzma_block_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options)
+{
+ lzma_next_coder_init(block_encoder_init, next, allocator, options);
+}
+
+
+extern LZMA_API lzma_ret
+lzma_block_encoder(lzma_stream *strm, lzma_options_block *options)
+{
+ lzma_next_strm_init(strm, block_encoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_FINISH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/block_encoder.h b/src/liblzma/common/block_encoder.h
new file mode 100644
index 0000000..eafcc61
--- /dev/null
+++ b/src/liblzma/common/block_encoder.h
@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file block_encoder.h
+/// \brief Encodes .lzma Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BLOCK_ENCODER_H
+#define LZMA_BLOCK_ENCODER_H
+
+#include "common.h"
+
+
+extern lzma_ret lzma_block_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_options_block *options);
+
+#endif
diff --git a/src/liblzma/common/block_header_decoder.c b/src/liblzma/common/block_header_decoder.c
new file mode 100644
index 0000000..7676c79
--- /dev/null
+++ b/src/liblzma/common/block_header_decoder.c
@@ -0,0 +1,373 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file block_header_decoder.c
+/// \brief Decodes Block Header from .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "check.h"
+
+
+struct lzma_coder_s {
+ lzma_options_block *options;
+
+ enum {
+ SEQ_FLAGS_1,
+ SEQ_FLAGS_2,
+ SEQ_COMPRESSED_SIZE,
+ SEQ_UNCOMPRESSED_SIZE,
+ SEQ_FILTER_FLAGS_INIT,
+ SEQ_FILTER_FLAGS_DECODE,
+ SEQ_CRC32,
+ SEQ_PADDING
+ } sequence;
+
+ /// Position in variable-length integers
+ size_t pos;
+
+ /// CRC32 of the Block Header
+ uint32_t crc32;
+
+ lzma_next_coder filter_flags_decoder;
+};
+
+
+static bool
+update_sequence(lzma_coder *coder)
+{
+ switch (coder->sequence) {
+ case SEQ_FLAGS_2:
+ if (coder->options->compressed_size
+ != LZMA_VLI_VALUE_UNKNOWN) {
+ coder->pos = 0;
+ coder->sequence = SEQ_COMPRESSED_SIZE;
+ break;
+ }
+
+ // Fall through
+
+ case SEQ_COMPRESSED_SIZE:
+ if (coder->options->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN) {
+ coder->pos = 0;
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ break;
+ }
+
+ // Fall through
+
+ case SEQ_UNCOMPRESSED_SIZE:
+ coder->pos = 0;
+
+ // Fall through
+
+ case SEQ_FILTER_FLAGS_DECODE:
+ if (coder->options->filters[coder->pos].id
+ != LZMA_VLI_VALUE_UNKNOWN) {
+ coder->sequence = SEQ_FILTER_FLAGS_INIT;
+ break;
+ }
+
+ if (coder->options->has_crc32) {
+ coder->pos = 0;
+ coder->sequence = SEQ_CRC32;
+ break;
+ }
+
+ case SEQ_CRC32:
+ if (coder->options->padding != 0) {
+ coder->pos = 0;
+ coder->sequence = SEQ_PADDING;
+ break;
+ }
+
+ return true;
+
+ default:
+ assert(0);
+ return true;
+ }
+
+ return false;
+}
+
+
+static lzma_ret
+block_header_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out lzma_attribute((unused)),
+ size_t *restrict out_pos lzma_attribute((unused)),
+ size_t out_size lzma_attribute((unused)),
+ lzma_action action lzma_attribute((unused)))
+{
+ while (*in_pos < in_size)
+ switch (coder->sequence) {
+ case SEQ_FLAGS_1:
+ // Check that the reserved bit is unset. Use HEADER_ERROR
+ // because newer version of liblzma may support the reserved
+ // bit, although it is likely that this is just a broken file.
+ if (in[*in_pos] & 0x40)
+ return LZMA_HEADER_ERROR;
+
+ // Number of filters: we prepare appropriate amount of
+ // variables for variable-length integer parsing. The
+ // initialization function has already reset the rest
+ // of the values to LZMA_VLI_VALUE_UNKNOWN, which allows
+ // us to later know how many filters there are.
+ for (int i = (int)(in[*in_pos] & 0x07) - 1; i >= 0; --i)
+ coder->options->filters[i].id = 0;
+
+ // End of Payload Marker flag
+ coder->options->has_eopm = (in[*in_pos] & 0x08) != 0;
+
+ // Compressed Size: Prepare for variable-length integer
+ // parsing if it is known.
+ if (in[*in_pos] & 0x10)
+ coder->options->compressed_size = 0;
+
+ // Uncompressed Size: the same.
+ if (in[*in_pos] & 0x20)
+ coder->options->uncompressed_size = 0;
+
+ // Is Metadata Block flag
+ coder->options->is_metadata = (in[*in_pos] & 0x80) != 0;
+
+ // We need at least one: Uncompressed Size or EOPM.
+ if (coder->options->uncompressed_size == LZMA_VLI_VALUE_UNKNOWN
+ && !coder->options->has_eopm)
+ return LZMA_DATA_ERROR;
+
+ // Update header CRC32.
+ coder->crc32 = lzma_crc32(in + *in_pos, 1, coder->crc32);
+
+ ++*in_pos;
+ coder->sequence = SEQ_FLAGS_2;
+ break;
+
+ case SEQ_FLAGS_2:
+ // Check that the reserved bits are unset.
+ if (in[*in_pos] & 0xE0)
+ return LZMA_DATA_ERROR;
+
+ // Get the size of Header Padding.
+ coder->options->padding = in[*in_pos] & 0x1F;
+
+ coder->crc32 = lzma_crc32(in + *in_pos, 1, coder->crc32);
+
+ ++*in_pos;
+
+ if (update_sequence(coder))
+ return LZMA_STREAM_END;
+
+ break;
+
+ case SEQ_COMPRESSED_SIZE: {
+ // Store the old input position to be used when
+ // updating coder->header_crc32.
+ const size_t in_start = *in_pos;
+
+ const lzma_ret ret = lzma_vli_decode(
+ &coder->options->compressed_size,
+ &coder->pos, in, in_pos, in_size);
+
+ const size_t in_used = *in_pos - in_start;
+
+ coder->options->compressed_reserve += in_used;
+ assert(coder->options->compressed_reserve
+ <= LZMA_VLI_BYTES_MAX);
+
+ coder->options->header_size += in_used;
+
+ coder->crc32 = lzma_crc32(in + in_start, in_used,
+ coder->crc32);
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ if (update_sequence(coder))
+ return LZMA_STREAM_END;
+
+ break;
+ }
+
+ case SEQ_UNCOMPRESSED_SIZE: {
+ const size_t in_start = *in_pos;
+
+ const lzma_ret ret = lzma_vli_decode(
+ &coder->options->uncompressed_size,
+ &coder->pos, in, in_pos, in_size);
+
+ const size_t in_used = *in_pos - in_start;
+
+ coder->options->uncompressed_reserve += in_used;
+ assert(coder->options->uncompressed_reserve
+ <= LZMA_VLI_BYTES_MAX);
+
+ coder->options->header_size += in_used;
+
+ coder->crc32 = lzma_crc32(in + in_start, in_used,
+ coder->crc32);
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ if (update_sequence(coder))
+ return LZMA_STREAM_END;
+
+ break;
+ }
+
+ case SEQ_FILTER_FLAGS_INIT: {
+ assert(coder->options->filters[coder->pos].id
+ != LZMA_VLI_VALUE_UNKNOWN);
+
+ const lzma_ret ret = lzma_filter_flags_decoder_init(
+ &coder->filter_flags_decoder, allocator,
+ &coder->options->filters[coder->pos]);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_FILTER_FLAGS_DECODE;
+ }
+
+ // Fall through
+
+ case SEQ_FILTER_FLAGS_DECODE: {
+ const size_t in_start = *in_pos;
+
+ const lzma_ret ret = coder->filter_flags_decoder.code(
+ coder->filter_flags_decoder.coder,
+ allocator, in, in_pos, in_size,
+ NULL, NULL, 0, LZMA_RUN);
+
+ const size_t in_used = *in_pos - in_start;
+ coder->options->header_size += in_used;
+ coder->crc32 = lzma_crc32(in + in_start,
+ in_used, coder->crc32);
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ ++coder->pos;
+
+ if (update_sequence(coder))
+ return LZMA_STREAM_END;
+
+ break;
+ }
+
+ case SEQ_CRC32:
+ assert(coder->options->has_crc32);
+
+ if (in[*in_pos] != ((coder->crc32 >> (coder->pos * 8)) & 0xFF))
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+ ++coder->pos;
+
+ // Check if we reached end of the CRC32 field.
+ if (coder->pos == 4) {
+ coder->options->header_size += 4;
+
+ if (update_sequence(coder))
+ return LZMA_STREAM_END;
+ }
+
+ break;
+
+ case SEQ_PADDING:
+ if (in[*in_pos] != 0x00)
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+ ++coder->options->header_size;
+ ++coder->pos;
+
+ if (coder->pos < (size_t)(coder->options->padding))
+ break;
+
+ return LZMA_STREAM_END;
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+block_header_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->filter_flags_decoder, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_block_header_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_options_block *options)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &block_header_decode;
+ next->end = &block_header_decoder_end;
+ next->coder->filter_flags_decoder = LZMA_NEXT_CODER_INIT;
+ }
+
+ // Assume that Compressed Size and Uncompressed Size are unknown.
+ options->compressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ options->uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+
+ // We will calculate the sizes of these fields too so that the
+ // application may rewrite the header if it wishes so.
+ options->compressed_reserve = 0;
+ options->uncompressed_reserve = 0;
+
+ // The Block Flags field is always present, so include its size here
+ // and we don't need to worry about it in block_header_decode().
+ options->header_size = 2;
+
+ // Reset filters[] to indicate empty list of filters.
+ // See SEQ_FLAGS_1 in block_header_decode() for reasoning of this.
+ for (size_t i = 0; i < 8; ++i) {
+ options->filters[i].id = LZMA_VLI_VALUE_UNKNOWN;
+ options->filters[i].options = NULL;
+ }
+
+ next->coder->options = options;
+ next->coder->sequence = SEQ_FLAGS_1;
+ next->coder->pos = 0;
+ next->coder->crc32 = 0;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_block_header_decoder(lzma_stream *strm,
+ lzma_options_block *options)
+{
+ lzma_next_strm_init(strm, lzma_block_header_decoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/block_header_encoder.c b/src/liblzma/common/block_header_encoder.c
new file mode 100644
index 0000000..594b4fc
--- /dev/null
+++ b/src/liblzma/common/block_header_encoder.c
@@ -0,0 +1,211 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file block_header_encoder.c
+/// \brief Encodes Block Header for .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "check.h"
+
+
+extern LZMA_API lzma_ret
+lzma_block_header_size(lzma_options_block *options)
+{
+ // Block Flags take two bytes.
+ size_t size = 2;
+
+ // Compressed Size
+ if (!lzma_vli_is_valid(options->compressed_size)) {
+ return LZMA_PROG_ERROR;
+
+ } else if (options->compressed_reserve != 0) {
+ // Make sure that the known Compressed Size fits into the
+ // reserved space. Note that lzma_vli_size() will return zero
+ // if options->compressed_size is LZMA_VLI_VALUE_UNKNOWN, so
+ // we don't need to handle that special case separately.
+ if (options->compressed_reserve > LZMA_VLI_BYTES_MAX
+ || lzma_vli_size(options->compressed_size)
+ > (size_t)(options->compressed_reserve))
+ return LZMA_PROG_ERROR;
+
+ size += options->compressed_reserve;
+
+ } else if (options->compressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ // Compressed Size is known. We have already checked
+ // that is is a valid VLI, and since it isn't
+ // LZMA_VLI_VALUE_UNKNOWN, we can be sure that
+ // lzma_vli_size() will succeed.
+ size += lzma_vli_size(options->compressed_size);
+ }
+
+ // Uncompressed Size
+ if (!lzma_vli_is_valid(options->uncompressed_size)) {
+ return LZMA_PROG_ERROR;
+
+ } else if (options->uncompressed_reserve != 0) {
+ if (options->uncompressed_reserve > LZMA_VLI_BYTES_MAX
+ || lzma_vli_size(options->uncompressed_size)
+ > (size_t)(options->uncompressed_reserve))
+ return LZMA_PROG_ERROR;
+
+ size += options->uncompressed_reserve;
+
+ } else if (options->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ size += lzma_vli_size(options->uncompressed_size);
+ }
+
+ // List of Filter Flags
+ for (size_t i = 0; options->filters[i].id != LZMA_VLI_VALUE_UNKNOWN;
+ ++i) {
+ // Don't allow too many filters.
+ if (i == 7)
+ return LZMA_PROG_ERROR;
+
+ uint32_t tmp;
+ const lzma_ret ret = lzma_filter_flags_size(&tmp,
+ options->filters + i);
+ if (ret != LZMA_OK)
+ return ret;
+
+ size += tmp;
+ }
+
+ // CRC32
+ if (options->has_crc32)
+ size += 4;
+
+ // Padding
+ int32_t padding;
+ if (options->padding == LZMA_BLOCK_HEADER_PADDING_AUTO) {
+ const uint32_t preferred = lzma_alignment_output(
+ options->filters, 1);
+ const uint32_t unaligned = size + options->alignment;
+ padding = (int32_t)(unaligned % preferred);
+ if (padding != 0)
+ padding = preferred - padding;
+ } else if (options->padding >= LZMA_BLOCK_HEADER_PADDING_MIN
+ && options->padding <= LZMA_BLOCK_HEADER_PADDING_MAX) {
+ padding = options->padding;
+ } else {
+ return LZMA_PROG_ERROR;
+ }
+
+ // All success. Copy the calculated values to the options structure.
+ options->padding = padding;
+ options->header_size = size + (size_t)(padding);
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_block_header_encode(uint8_t *out, const lzma_options_block *options)
+{
+ // We write the Block Flags later.
+ if (options->header_size < 2)
+ return LZMA_PROG_ERROR;
+
+ const size_t out_size = options->header_size;
+ size_t out_pos = 2;
+
+ // Compressed Size
+ if (options->compressed_size != LZMA_VLI_VALUE_UNKNOWN
+ || options->compressed_reserve != 0) {
+ const lzma_vli size = options->compressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ ? options->compressed_size : 0;
+ size_t vli_pos = 0;
+ if (lzma_vli_encode(
+ size, &vli_pos, options->compressed_reserve,
+ out, &out_pos, out_size) != LZMA_STREAM_END)
+ return LZMA_PROG_ERROR;
+
+ }
+
+ // Uncompressed Size
+ if (options->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN
+ || options->uncompressed_reserve != 0) {
+ const lzma_vli size = options->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ ? options->uncompressed_size : 0;
+ size_t vli_pos = 0;
+ if (lzma_vli_encode(
+ size, &vli_pos, options->uncompressed_reserve,
+ out, &out_pos, out_size) != LZMA_STREAM_END)
+ return LZMA_PROG_ERROR;
+
+ }
+
+ // Filter Flags
+ size_t filter_count;
+ for (filter_count = 0; options->filters[filter_count].id
+ != LZMA_VLI_VALUE_UNKNOWN; ++filter_count) {
+ // There can be at maximum of seven filters.
+ if (filter_count == 7)
+ return LZMA_PROG_ERROR;
+
+ const lzma_ret ret = lzma_filter_flags_encode(out, &out_pos,
+ out_size, options->filters + filter_count);
+ // FIXME: Don't return LZMA_BUF_ERROR.
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ // Block Flags 1
+ out[0] = filter_count;
+
+ if (options->has_eopm)
+ out[0] |= 0x08;
+ else if (options->uncompressed_size == LZMA_VLI_VALUE_UNKNOWN)
+ return LZMA_PROG_ERROR;
+
+ if (options->compressed_size != LZMA_VLI_VALUE_UNKNOWN
+ || options->compressed_reserve != 0)
+ out[0] |= 0x10;
+
+ if (options->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN
+ || options->uncompressed_reserve != 0)
+ out[0] |= 0x20;
+
+ if (options->is_metadata)
+ out[0] |= 0x80;
+
+ // Block Flags 2
+ if (options->padding < LZMA_BLOCK_HEADER_PADDING_MIN
+ || options->padding > LZMA_BLOCK_HEADER_PADDING_MAX)
+ return LZMA_PROG_ERROR;
+
+ out[1] = (uint8_t)(options->padding);
+
+ // CRC32
+ if (options->has_crc32) {
+ if (out_size - out_pos < 4)
+ return LZMA_PROG_ERROR;
+
+ const uint32_t crc = lzma_crc32(out, out_pos, 0);
+ for (size_t i = 0; i < 4; ++i)
+ out[out_pos++] = crc >> (i * 8);
+ }
+
+ // Padding - the amount of available space must now match with
+ // the size of the Padding field.
+ if (out_size - out_pos != (size_t)(options->padding))
+ return LZMA_PROG_ERROR;
+
+ memzero(out + out_pos, (size_t)(options->padding));
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/block_private.h b/src/liblzma/common/block_private.h
new file mode 100644
index 0000000..8e2db31
--- /dev/null
+++ b/src/liblzma/common/block_private.h
@@ -0,0 +1,46 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file block_private.h
+/// \brief Common stuff for Block encoder and decoder
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BLOCK_COMMON_H
+#define LZMA_BLOCK_COMMON_H
+
+#include "common.h"
+
+static inline bool
+update_size(lzma_vli *size, lzma_vli add, lzma_vli limit)
+{
+ if (limit > LZMA_VLI_VALUE_MAX)
+ limit = LZMA_VLI_VALUE_MAX;
+
+ if (limit < *size || limit - *size < add)
+ return true;
+
+ *size += add;
+
+ return false;
+}
+
+
+static inline bool
+is_size_valid(lzma_vli size, lzma_vli reference)
+{
+ return reference == LZMA_VLI_VALUE_UNKNOWN || reference == size;
+}
+
+#endif
diff --git a/src/liblzma/common/chunk_size.c b/src/liblzma/common/chunk_size.c
new file mode 100644
index 0000000..042201d
--- /dev/null
+++ b/src/liblzma/common/chunk_size.c
@@ -0,0 +1,74 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file chunk_size.c
+/// \brief Finds out the minimal reasonable chunk size for a filter chain
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+/**
+ * \brief Finds out the minimal reasonable chunk size for a filter chain
+ *
+ * This function helps determining the Uncompressed Sizes of the Blocks when
+ * doing multi-threaded encoding.
+ *
+ * When compressing a large file on a system having multiple CPUs or CPU
+ * cores, the file can be splitted in smaller chunks, that are compressed
+ * independently into separate Blocks in the same .lzma Stream.
+ *
+ * \return Minimum reasonable Uncompressed Size of a Block. The
+ * recommended minimum Uncompressed Size is between this value
+ * and the value times two.
+
+ Zero if the Uncompressed Sizes of Blocks don't matter
+ */
+extern LZMA_API size_t
+lzma_chunk_size(const lzma_options_filter *filters)
+{
+ while (filters->id != LZMA_VLI_VALUE_UNKNOWN) {
+ switch (filters->id) {
+ // TODO LZMA_FILTER_SPARSE
+
+ case LZMA_FILTER_COPY:
+ case LZMA_FILTER_SUBBLOCK:
+ case LZMA_FILTER_X86:
+ case LZMA_FILTER_POWERPC:
+ case LZMA_FILTER_IA64:
+ case LZMA_FILTER_ARM:
+ case LZMA_FILTER_ARMTHUMB:
+ case LZMA_FILTER_SPARC:
+ // These are very fast, thus there is no point in
+ // splitting the data in smaller blocks.
+ break;
+
+ case LZMA_FILTER_LZMA:
+ // The block sizes of the possible next filters in
+ // the chain are irrelevant after the LZMA filter.
+ return ((lzma_options_lzma *)(filters->options))
+ ->dictionary_size;
+
+ default:
+ // Unknown filters
+ return 0;
+ }
+
+ ++filters;
+ }
+
+ // Indicate that splitting would be useless.
+ return SIZE_MAX;
+}
diff --git a/src/liblzma/common/code.c b/src/liblzma/common/code.c
new file mode 100644
index 0000000..0e3929b
--- /dev/null
+++ b/src/liblzma/common/code.c
@@ -0,0 +1,203 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file code.c
+/// \brief zlib-like API wrapper for liblzma's internal API
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+LZMA_API const lzma_stream LZMA_STREAM_INIT_VAR = {
+ .next_in = NULL,
+ .avail_in = 0,
+ .total_in = 0,
+ .next_out = NULL,
+ .avail_out = 0,
+ .total_out = 0,
+ .allocator = NULL,
+ .internal = NULL,
+};
+
+
+extern lzma_ret
+lzma_strm_init(lzma_stream *strm)
+{
+ if (strm == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (strm->internal == NULL) {
+ strm->internal = lzma_alloc(sizeof(lzma_internal),
+ strm->allocator);
+ if (strm->internal == NULL)
+ return LZMA_MEM_ERROR;
+
+ strm->internal->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ strm->internal->supported_actions[LZMA_RUN] = false;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = false;
+ strm->internal->supported_actions[LZMA_FULL_FLUSH] = false;
+ strm->internal->supported_actions[LZMA_FINISH] = false;
+ strm->internal->sequence = ISEQ_RUN;
+
+ strm->total_in = 0;
+ strm->total_out = 0;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_code(lzma_stream *strm, lzma_action action)
+{
+ // Sanity checks
+ if ((strm->next_in == NULL && strm->avail_in != 0)
+ || (strm->next_out == NULL && strm->avail_out != 0)
+ || strm->internal == NULL
+ || strm->internal->next.code == NULL
+ || (unsigned int)(action) > LZMA_FINISH
+ || !strm->internal->supported_actions[action])
+ return LZMA_PROG_ERROR;
+
+ switch (strm->internal->sequence) {
+ case ISEQ_RUN:
+ switch (action) {
+ case LZMA_RUN:
+ break;
+
+ case LZMA_SYNC_FLUSH:
+ strm->internal->sequence = ISEQ_SYNC_FLUSH;
+ break;
+
+ case LZMA_FULL_FLUSH:
+ strm->internal->sequence = ISEQ_FULL_FLUSH;
+ break;
+
+ case LZMA_FINISH:
+ strm->internal->sequence = ISEQ_FINISH;
+ break;
+ }
+
+ break;
+
+ case ISEQ_SYNC_FLUSH:
+ if (action != LZMA_SYNC_FLUSH)
+ return LZMA_PROG_ERROR;
+
+ // Check that application doesn't change avail_in once
+ // LZMA_SYNC_FLUSH has been used.
+ if (strm->internal->avail_in != strm->avail_in)
+ return LZMA_DATA_ERROR;
+
+ break;
+
+ case ISEQ_FULL_FLUSH:
+ if (action != LZMA_FULL_FLUSH)
+ return LZMA_PROG_ERROR;
+
+ // Check that application doesn't change avail_in once
+ // LZMA_FULL_FLUSH has been used.
+ if (strm->internal->avail_in != strm->avail_in)
+ return LZMA_DATA_ERROR;
+
+ break;
+
+ case ISEQ_FINISH:
+ if (action != LZMA_FINISH)
+ return LZMA_PROG_ERROR;
+
+ if (strm->internal->avail_in != strm->avail_in)
+ return LZMA_DATA_ERROR;
+
+ break;
+
+ case ISEQ_END:
+ return LZMA_STREAM_END;
+
+ case ISEQ_ERROR:
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ size_t in_pos = 0;
+ size_t out_pos = 0;
+ lzma_ret ret = strm->internal->next.code(
+ strm->internal->next.coder, strm->allocator,
+ strm->next_in, &in_pos, strm->avail_in,
+ strm->next_out, &out_pos, strm->avail_out, action);
+
+ strm->next_in += in_pos;
+ strm->avail_in -= in_pos;
+ strm->total_in += in_pos;
+
+ strm->next_out += out_pos;
+ strm->avail_out -= out_pos;
+ strm->total_out += out_pos;
+
+ strm->internal->avail_in = strm->avail_in;
+
+ switch (ret) {
+ case LZMA_OK:
+ // Don't return LZMA_BUF_ERROR when it happens the first time.
+ // This is to avoid returning LZMA_BUF_ERROR when avail_out
+ // was zero but still there was no more data left to written
+ // to next_out.
+ if (out_pos == 0 && in_pos == 0) {
+ if (strm->internal->allow_buf_error)
+ ret = LZMA_BUF_ERROR;
+ else
+ strm->internal->allow_buf_error = true;
+ } else {
+ strm->internal->allow_buf_error = false;
+ }
+ break;
+
+ case LZMA_STREAM_END:
+ if (strm->internal->sequence == ISEQ_SYNC_FLUSH
+ || strm->internal->sequence == ISEQ_FULL_FLUSH)
+ strm->internal->sequence = ISEQ_RUN;
+ else
+ strm->internal->sequence = ISEQ_END;
+ break;
+
+ case LZMA_UNSUPPORTED_CHECK:
+ strm->internal->allow_buf_error = false;
+ break;
+
+ default:
+ // All the other errors are fatal; coding cannot be continued.
+ strm->internal->sequence = ISEQ_ERROR;
+ break;
+ }
+
+ return ret;
+}
+
+
+extern LZMA_API void
+lzma_end(lzma_stream *strm)
+{
+ if (strm != NULL && strm->internal != NULL) {
+ if (strm->internal->next.end != NULL)
+ strm->internal->next.end(strm->internal->next.coder,
+ strm->allocator);
+
+ lzma_free(strm->internal, strm->allocator);
+ strm->internal = NULL;
+ }
+
+ return;
+}
diff --git a/src/liblzma/common/common.h b/src/liblzma/common/common.h
new file mode 100644
index 0000000..ca9c2f2
--- /dev/null
+++ b/src/liblzma/common/common.h
@@ -0,0 +1,271 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file common.h
+/// \brief Definitions common to the whole liblzma library
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_COMMON_H
+#define LZMA_COMMON_H
+
+#include "sysdefs.h"
+
+// Don't use ifdef...
+#if HAVE_VISIBILITY
+# define LZMA_API __attribute__((__visibility__("default")))
+#else
+# define LZMA_API
+#endif
+
+
+/// Size of temporary buffers needed in some filters
+#define LZMA_BUFFER_SIZE 4096
+
+
+/// Internal helper filter used by Subblock decoder. It is mapped to an
+/// otherwise invalid Filter ID, which is impossible to get from any input
+/// file (even if malicious file).
+#define LZMA_FILTER_SUBBLOCK_HELPER (UINT64_MAX - 2)
+
+
+///////////
+// Types //
+///////////
+
+typedef struct lzma_coder_s lzma_coder;
+
+typedef struct lzma_next_coder_s lzma_next_coder;
+
+typedef struct lzma_filter_info_s lzma_filter_info;
+
+
+typedef lzma_ret (*lzma_init_function)(
+ lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters);
+
+typedef lzma_ret (*lzma_code_function)(
+ lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action);
+
+typedef void (*lzma_end_function)(
+ lzma_coder *coder, lzma_allocator *allocator);
+
+
+/// Hold data and function pointers of the next filter in the chain.
+struct lzma_next_coder_s {
+ /// Pointer to coder-specific data
+ lzma_coder *coder;
+
+ /// "Pointer" to init function. This is never called here.
+ /// We need only to detect if we are initializing a coder
+ /// that was allocated earlier. See code.c and next_coder.c.
+ uintptr_t init;
+
+ /// Pointer to function to do the actual coding
+ lzma_code_function code;
+
+ /// Pointer to function to free lzma_next_coder.coder
+ lzma_end_function end;
+};
+
+#define LZMA_NEXT_CODER_INIT \
+ (lzma_next_coder){ \
+ .coder = NULL, \
+ .init = 0, \
+ .code = NULL, \
+ .end = NULL, \
+ }
+
+
+struct lzma_internal_s {
+ lzma_next_coder next;
+
+ enum {
+ ISEQ_RUN,
+ ISEQ_SYNC_FLUSH,
+ ISEQ_FULL_FLUSH,
+ ISEQ_FINISH,
+ ISEQ_END,
+ ISEQ_ERROR,
+ } sequence;
+
+ bool supported_actions[4];
+ bool allow_buf_error;
+ size_t avail_in;
+};
+
+
+struct lzma_filter_info_s {
+ /// Pointer to function used to initialize the filter.
+ /// This is NULL to indicate end of array.
+ lzma_init_function init;
+
+ /// Pointer to filter's options structure
+ void *options;
+
+ /// Uncompressed size of the filter, or LZMA_VLI_VALUE_UNKNOWN
+ /// if unknown.
+ lzma_vli uncompressed_size;
+};
+
+
+/*
+typedef struct {
+ lzma_init_function init;
+ uint32_t (*input_alignment)(lzma_vli id, const void *options);
+ uint32_t (*output_alignment)(lzma_vli id, const void *options);
+ bool changes_uncompressed_size;
+ bool supports_eopm;
+} lzma_filter_hook;
+*/
+
+
+///////////////
+// Functions //
+///////////////
+
+/// Allocates memory
+extern void *lzma_alloc(size_t size, lzma_allocator *allocator)
+ lzma_attribute((malloc));
+
+/// Frees memory
+extern void lzma_free(void *ptr, lzma_allocator *allocator);
+
+/// Initializes lzma_stream FIXME desc
+extern lzma_ret lzma_strm_init(lzma_stream *strm);
+
+///
+extern lzma_ret lzma_next_filter_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+///
+extern void lzma_next_coder_end(lzma_next_coder *next,
+ lzma_allocator *allocator);
+
+
+extern lzma_ret lzma_filter_flags_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_options_filter *options);
+
+extern lzma_ret lzma_block_header_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_options_block *options);
+
+extern lzma_ret lzma_stream_encoder_single_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_options_stream *options);
+
+extern lzma_ret lzma_stream_decoder_init(
+ lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_extra **header, lzma_extra **footer);
+
+
+/// \brief Wrapper for memcpy()
+///
+/// This function copies as much data as possible from in[] to out[] and
+/// updates *in_pos and *out_pos accordingly.
+///
+static inline size_t
+bufcpy(const uint8_t *restrict in, size_t *restrict in_pos, size_t in_size,
+ uint8_t *restrict out, size_t *restrict out_pos,
+ size_t out_size)
+{
+ const size_t in_avail = in_size - *in_pos;
+ const size_t out_avail = out_size - *out_pos;
+ const size_t copy_size = MIN(in_avail, out_avail);
+
+ memcpy(out + *out_pos, in + *in_pos, copy_size);
+
+ *in_pos += copy_size;
+ *out_pos += copy_size;
+
+ return copy_size;
+}
+
+
+/// \brief Initializing the next coder
+///
+/// lzma_next_coder can point to different types of coders. The existing
+/// coder may be different than what we are initializing now. In that case
+/// we must git rid of the old coder first. Otherwise we reuse the existing
+/// coder structure.
+///
+#define lzma_next_coder_init2(next, allocator, cmpfunc, func, ...) \
+do { \
+ if ((uintptr_t)(&cmpfunc) != (next)->init) \
+ lzma_next_coder_end(next, allocator); \
+ const lzma_ret ret = func(next, __VA_ARGS__); \
+ if (ret == LZMA_OK) { \
+ (next)->init = (uintptr_t)(&cmpfunc); \
+ assert((next)->code != NULL); \
+ assert((next)->end != NULL); \
+ } else { \
+ lzma_next_coder_end(next, allocator); \
+ } \
+ return ret; \
+} while (0)
+
+/// \brief Initializing lzma_next_coder
+///
+/// Call the initialization function, which must take at least one
+/// argument in addition to lzma_next_coder and lzma_allocator.
+#define lzma_next_coder_init(func, next, allocator, ...) \
+ lzma_next_coder_init2(next, allocator, \
+ func, func, allocator, __VA_ARGS__)
+
+
+/// \brief Initializing lzma_stream
+///
+/// lzma_strm initialization with more detailed options.
+#define lzma_next_strm_init2(strm, cmpfunc, func, ...) \
+do { \
+ lzma_ret ret = lzma_strm_init(strm); \
+ if (ret != LZMA_OK) \
+ return ret; \
+ if ((uintptr_t)(&cmpfunc) != (strm)->internal->next.init) \
+ lzma_next_coder_end(\
+ &(strm)->internal->next, (strm)->allocator); \
+ ret = func(&(strm)->internal->next, __VA_ARGS__); \
+ if (ret != LZMA_OK) { \
+ lzma_end(strm); \
+ return ret; \
+ } \
+ (strm)->internal->next.init = (uintptr_t)(&cmpfunc); \
+ assert((strm)->internal->next.code != NULL); \
+ assert((strm)->internal->next.end != NULL); \
+} while (0)
+
+/// \brief Initializing lzma_stream
+///
+/// Call the initialization function, which must take at least one
+/// argument in addition to lzma_next_coder and lzma_allocator.
+#define lzma_next_strm_init(strm, func, ...) \
+ lzma_next_strm_init2(strm, func, func, (strm)->allocator, __VA_ARGS__)
+
+
+/// \brief Return if expression doesn't evaluate to LZMA_OK
+///
+/// There are several situations where we want to return immediatelly
+/// with the value of expr if it isn't LZMA_OK. This macro shortens
+/// the code a bit.
+///
+#define return_if_error(expr) \
+do { \
+ const lzma_ret ret_ = expr; \
+ if (ret_ != LZMA_OK) \
+ return ret_; \
+} while (0)
+
+#endif
diff --git a/src/liblzma/common/copy_coder.c b/src/liblzma/common/copy_coder.c
new file mode 100644
index 0000000..64864f6
--- /dev/null
+++ b/src/liblzma/common/copy_coder.c
@@ -0,0 +1,143 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file copy_coder.c
+/// \brief The Copy filter encoder and decoder
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "copy_coder.h"
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+ lzma_vli uncompressed_size;
+ bool is_encoder;
+};
+
+
+static lzma_ret
+copy_code(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ // If we aren't the last filter in the chain, the Copy filter
+ // is totally useless. Note that it is job of the next coder to
+ // take care of Uncompressed Size, so we don't need to update our
+ // coder->uncompressed_size at all.
+ if (coder->next.code != NULL)
+ return coder->next.code(coder->next.coder, allocator,
+ in, in_pos, in_size, out, out_pos, out_size,
+ action);
+
+ // If we get here, we are the last filter in the chain.
+
+ const size_t in_avail = in_size - *in_pos;
+
+ if (coder->is_encoder) {
+ // Check that we don't have too much input.
+ if ((lzma_vli)(in_avail) > coder->uncompressed_size)
+ return LZMA_DATA_ERROR;
+
+ // Check that once LZMA_FINISH has been given, the
+ // amount of input matches uncompressed_size if it
+ // is known.
+ if (action == LZMA_FINISH && coder->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && coder->uncompressed_size
+ != (lzma_vli)(in_avail))
+ return LZMA_DATA_ERROR;
+
+ } else {
+ // Limit in_size so that we don't copy too much.
+ if ((lzma_vli)(in_avail) > coder->uncompressed_size)
+ in_size = *in_pos + (size_t)(coder->uncompressed_size);
+ }
+
+ // Store the old input position, which is needed to update
+ // coder->uncompressed_size.
+ const size_t in_start = *in_pos;
+
+ // We are the last coder in the chain.
+ // Just copy as much data as possible.
+ bufcpy(in, in_pos, in_size, out, out_pos, out_size);
+
+ // Update uncompressed_size if it is known.
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN)
+ coder->uncompressed_size -= *in_pos - in_start;
+
+ // action can be LZMA_FINISH only in the encoder.
+ if ((action == LZMA_FINISH && *in_pos == in_size)
+ || coder->uncompressed_size == 0)
+ return LZMA_STREAM_END;
+
+ return LZMA_OK;
+}
+
+
+static void
+copy_coder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+copy_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ // Allocate memory for the decoder if needed.
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = ©_code;
+ next->end = ©_coder_end;
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ // Copy Uncompressed Size which is used to limit the output size.
+ next->coder->uncompressed_size = filters[0].uncompressed_size;
+
+ // The coder acts slightly differently as encoder and decoder.
+ next->coder->is_encoder = is_encoder;
+
+ // Initialize the next decoder in the chain, if any.
+ return lzma_next_filter_init(
+ &next->coder->next, allocator, filters + 1);
+}
+
+
+#ifdef HAVE_ENCODER
+extern lzma_ret
+lzma_copy_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ lzma_next_coder_init(copy_coder_init, next, allocator, filters, true);
+}
+#endif
+
+
+#ifdef HAVE_DECODER
+extern lzma_ret
+lzma_copy_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ lzma_next_coder_init(copy_coder_init, next, allocator, filters, false);
+}
+#endif
diff --git a/src/liblzma/common/copy_coder.h b/src/liblzma/common/copy_coder.h
new file mode 100644
index 0000000..b8d0295
--- /dev/null
+++ b/src/liblzma/common/copy_coder.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file copy_coder.h
+/// \brief The Copy filter encoder and decoder
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_COPY_CODER_H
+#define LZMA_COPY_CODER_H
+
+#include "common.h"
+
+extern lzma_ret lzma_copy_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_copy_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+#endif
diff --git a/src/liblzma/common/delta_coder.c b/src/liblzma/common/delta_coder.c
new file mode 100644
index 0000000..ec8c6d5
--- /dev/null
+++ b/src/liblzma/common/delta_coder.c
@@ -0,0 +1,210 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file delta_coder.c
+/// \brief Encoder and decoder for the Delta filter
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "delta_coder.h"
+
+
+struct lzma_coder_s {
+ /// Next coder in the chain
+ lzma_next_coder next;
+
+ /// Uncompressed size - This is needed when we are the last
+ /// filter in the chain.
+ lzma_vli uncompressed_size;
+
+ /// Delta distance
+ size_t distance;
+
+ /// True if we are encoding; false if decoding
+ bool is_encoder;
+
+ /// Position in history[]
+ uint8_t pos;
+
+ /// Buffer to hold history of the original data
+ uint8_t history[LZMA_DELTA_DISTANCE_MAX];
+};
+
+
+static void
+encode_buffer(lzma_coder *coder, uint8_t *buffer, size_t size)
+{
+ const size_t distance = coder->distance;
+
+ for (size_t i = 0; i < size; ++i) {
+ const uint8_t tmp = coder->history[
+ (distance + coder->pos) & 0xFF];
+ coder->history[coder->pos--] = buffer[i];
+ buffer[i] -= tmp;
+ }
+
+ return;
+}
+
+
+static void
+decode_buffer(lzma_coder *coder, uint8_t *buffer, size_t size)
+{
+ const size_t distance = coder->distance;
+
+ for (size_t i = 0; i < size; ++i) {
+ buffer[i] += coder->history[(distance + coder->pos) & 0xFF];
+ coder->history[coder->pos--] = buffer[i];
+ }
+
+ return;
+}
+
+
+static lzma_ret
+delta_code(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ const size_t out_start = *out_pos;
+ size_t size;
+ lzma_ret ret;
+
+ if (coder->next.code == NULL) {
+ const size_t in_avail = in_size - *in_pos;
+
+ if (coder->is_encoder) {
+ // Check that we don't have too much input.
+ if ((lzma_vli)(in_avail) > coder->uncompressed_size)
+ return LZMA_DATA_ERROR;
+
+ // Check that once LZMA_FINISH has been given, the
+ // amount of input matches uncompressed_size if it
+ // is known.
+ if (action == LZMA_FINISH && coder->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && coder->uncompressed_size
+ != (lzma_vli)(in_avail))
+ return LZMA_DATA_ERROR;
+
+ } else {
+ // Limit in_size so that we don't copy too much.
+ if ((lzma_vli)(in_avail) > coder->uncompressed_size)
+ in_size = *in_pos + (size_t)(
+ coder->uncompressed_size);
+ }
+
+ size = bufcpy(in, in_pos, in_size, out, out_pos, out_size);
+
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN)
+ coder->uncompressed_size -= size;
+
+ // action can be LZMA_FINISH only in the encoder.
+ ret = (action == LZMA_FINISH && *in_pos == in_size)
+ || coder->uncompressed_size == 0
+ ? LZMA_STREAM_END : LZMA_OK;
+
+ } else {
+ ret = coder->next.code(coder->next.coder, allocator,
+ in, in_pos, in_size, out, out_pos, out_size,
+ action);
+ if (ret != LZMA_OK && ret != LZMA_STREAM_END)
+ return ret;
+
+ size = *out_pos - out_start;
+ }
+
+ if (coder->is_encoder)
+ encode_buffer(coder, out + out_start, size);
+ else
+ decode_buffer(coder, out + out_start, size);
+
+ return ret;
+}
+
+
+static void
+delta_coder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+delta_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ // Allocate memory for the decoder if needed.
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &delta_code;
+ next->end = &delta_coder_end;
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ }
+
+ // Copy Uncompressed Size which is used to limit the output size.
+ next->coder->uncompressed_size = filters[0].uncompressed_size;
+
+ // The coder acts slightly differently as encoder and decoder.
+ next->coder->is_encoder = is_encoder;
+
+ // Set the delta distance.
+ if (filters[0].options == NULL)
+ return LZMA_PROG_ERROR;
+ next->coder->distance = ((lzma_options_delta *)(filters[0].options))
+ ->distance;
+ if (next->coder->distance < LZMA_DELTA_DISTANCE_MIN
+ || next->coder->distance > LZMA_DELTA_DISTANCE_MAX)
+ return LZMA_HEADER_ERROR;
+
+ // Initialize the rest of the variables.
+ next->coder->pos = 0;
+ memzero(next->coder->history, LZMA_DELTA_DISTANCE_MAX);
+
+ // Initialize the next decoder in the chain, if any.
+ {
+ const lzma_ret ret = lzma_next_filter_init(&next->coder->next,
+ allocator, filters + 1);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ return LZMA_OK;
+}
+
+
+#ifdef HAVE_ENCODER
+extern lzma_ret
+lzma_delta_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ return delta_coder_init(next, allocator, filters, true);
+}
+#endif
+
+
+#ifdef HAVE_DECODER
+extern lzma_ret
+lzma_delta_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ return delta_coder_init(next, allocator, filters, false);
+}
+#endif
diff --git a/src/liblzma/common/delta_coder.h b/src/liblzma/common/delta_coder.h
new file mode 100644
index 0000000..60cea95
--- /dev/null
+++ b/src/liblzma/common/delta_coder.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file delta_coder.h
+/// \brief The Delta filter encoder and decoder
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_DELTA_CODER_H
+#define LZMA_DELTA_CODER_H
+
+#include "common.h"
+
+extern lzma_ret lzma_delta_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_delta_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+#endif
diff --git a/src/liblzma/common/extra.c b/src/liblzma/common/extra.c
new file mode 100644
index 0000000..b743a43
--- /dev/null
+++ b/src/liblzma/common/extra.c
@@ -0,0 +1,33 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file extra.c
+/// \brief Handling of Extra in Metadata
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API void
+lzma_extra_free(lzma_extra *extra, lzma_allocator *allocator)
+{
+ while (extra != NULL) {
+ lzma_extra *tmp = extra->next;
+ lzma_free(extra, allocator);
+ extra = tmp;
+ }
+
+ return;
+}
diff --git a/src/liblzma/common/features.c b/src/liblzma/common/features.c
new file mode 100644
index 0000000..33b2e0a
--- /dev/null
+++ b/src/liblzma/common/features.c
@@ -0,0 +1,70 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file features.c
+/// \brief Information about features enabled at compile time
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+static const lzma_vli filters[] = {
+#ifdef HAVE_FILTER_COPY
+ LZMA_FILTER_COPY,
+#endif
+
+#ifdef HAVE_FILTER_SUBBLOCK
+ LZMA_FILTER_SUBBLOCK,
+#endif
+
+#ifdef HAVE_FILTER_X86
+ LZMA_FILTER_X86,
+#endif
+
+#ifdef HAVE_FILTER_POWERPC
+ LZMA_FILTER_POWERPC,
+#endif
+
+#ifdef HAVE_FILTER_IA64
+ LZMA_FILTER_IA64,
+#endif
+
+#ifdef HAVE_FILTER_ARM
+ LZMA_FILTER_ARM,
+#endif
+
+#ifdef HAVE_FILTER_ARMTHUMB
+ LZMA_FILTER_ARMTHUMB,
+#endif
+
+#ifdef HAVE_FILTER_SPARC
+ LZMA_FILTER_SPARC,
+#endif
+
+#ifdef HAVE_FILTER_DELTA
+ LZMA_FILTER_DELTA,
+#endif
+
+#ifdef HAVE_FILTER_LZMA
+ LZMA_FILTER_LZMA,
+#endif
+
+ LZMA_VLI_VALUE_UNKNOWN
+};
+
+
+LZMA_API const lzma_vli *const lzma_available_filter_encoders = filters;
+
+LZMA_API const lzma_vli *const lzma_available_filter_decoders = filters;
diff --git a/src/liblzma/common/filter_flags_decoder.c b/src/liblzma/common/filter_flags_decoder.c
new file mode 100644
index 0000000..515f934
--- /dev/null
+++ b/src/liblzma/common/filter_flags_decoder.c
@@ -0,0 +1,382 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file filter_flags_decoder.c
+/// \brief Decodes a Filter Flags field
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "lzma_decoder.h"
+
+
+struct lzma_coder_s {
+ lzma_options_filter *options;
+
+ enum {
+ SEQ_MISC,
+ SEQ_ID,
+ SEQ_SIZE,
+ SEQ_PROPERTIES,
+ } sequence;
+
+ /// \brief Position in variable-length integers
+ size_t pos;
+
+ /// \brief Size of Filter Properties
+ lzma_vli properties_size;
+};
+
+
+#ifdef HAVE_FILTER_SUBBLOCK
+static lzma_ret
+properties_subblock(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *in lzma_attribute((unused)),
+ size_t *in_pos lzma_attribute((unused)),
+ size_t in_size lzma_attribute((unused)))
+{
+ if (coder->properties_size != 0)
+ return LZMA_HEADER_ERROR;
+
+ coder->options->options = lzma_alloc(
+ sizeof(lzma_options_subblock), allocator);
+ if (coder->options->options == NULL)
+ return LZMA_MEM_ERROR;
+
+ ((lzma_options_subblock *)(coder->options->options))
+ ->allow_subfilters = true;
+ return LZMA_STREAM_END;
+}
+#endif
+
+
+#ifdef HAVE_FILTER_SIMPLE
+static lzma_ret
+properties_simple(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *in, size_t *in_pos, size_t in_size)
+{
+ if (coder->properties_size == 0)
+ return LZMA_STREAM_END;
+
+ if (coder->properties_size != 4)
+ return LZMA_HEADER_ERROR;
+
+ lzma_options_simple *options = coder->options->options;
+
+ if (options == NULL) {
+ options = lzma_alloc(sizeof(lzma_options_simple), allocator);
+ if (options == NULL)
+ return LZMA_MEM_ERROR;
+
+ options->start_offset = 0;
+ coder->options->options = options;
+ }
+
+ while (coder->pos < 4) {
+ if (*in_pos == in_size)
+ return LZMA_OK;
+
+ options->start_offset
+ |= (uint32_t)(in[*in_pos]) << (8 * coder->pos);
+ ++*in_pos;
+ ++coder->pos;
+ }
+
+ // Don't leave an options structure allocated if start_offset is zero.
+ if (options->start_offset == 0) {
+ lzma_free(options, allocator);
+ coder->options->options = NULL;
+ }
+
+ return LZMA_STREAM_END;
+}
+#endif
+
+
+#ifdef HAVE_FILTER_DELTA
+static lzma_ret
+properties_delta(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *in, size_t *in_pos, size_t in_size)
+{
+ if (coder->properties_size != 1)
+ return LZMA_HEADER_ERROR;
+
+ if (*in_pos == in_size)
+ return LZMA_OK;
+
+ lzma_options_delta *options = lzma_alloc(
+ sizeof(lzma_options_delta), allocator);
+ if (options == NULL)
+ return LZMA_MEM_ERROR;
+
+ coder->options->options = options;
+
+ options->distance = (uint32_t)(in[*in_pos]) + 1;
+ ++*in_pos;
+
+ return LZMA_STREAM_END;
+}
+#endif
+
+
+#ifdef HAVE_FILTER_LZMA
+static lzma_ret
+properties_lzma(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *in, size_t *in_pos, size_t in_size)
+{
+ // LZMA properties are always two bytes (at least for now).
+ if (coder->properties_size != 2)
+ return LZMA_HEADER_ERROR;
+
+ assert(coder->pos < 2);
+
+ while (*in_pos < in_size) {
+ switch (coder->pos) {
+ case 0:
+ // Allocate the options structure.
+ coder->options->options = lzma_alloc(
+ sizeof(lzma_options_lzma), allocator);
+ if (coder->options->options == NULL)
+ return LZMA_MEM_ERROR;
+
+ // Decode lc, lp, and pb.
+ if (lzma_lzma_decode_properties(
+ coder->options->options, in[*in_pos]))
+ return LZMA_HEADER_ERROR;
+
+ ++*in_pos;
+ ++coder->pos;
+ break;
+
+ case 1: {
+ lzma_options_lzma *options = coder->options->options;
+
+ // Check that reserved bits are unset.
+ if (in[*in_pos] & 0xC0)
+ return LZMA_HEADER_ERROR;
+
+ // Decode the dictionary size. See the file format
+ // specification section 4.3.4.2 to understand this.
+ if (in[*in_pos] == 0) {
+ options->dictionary_size = 1;
+
+ } else if (in[*in_pos] > 59) {
+ // Dictionary size is over 1 GiB.
+ // It's not supported at the moment.
+ return LZMA_HEADER_ERROR;
+# if LZMA_DICTIONARY_SIZE_MAX != UINT32_C(1) << 30
+# error Update the if()-condition a few lines
+# error above to match LZMA_DICTIONARY_SIZE_MAX.
+# endif
+
+ } else {
+ options->dictionary_size
+ = 2 | ((in[*in_pos] + 1) & 1);
+ options->dictionary_size
+ <<= (in[*in_pos] - 1) / 2;
+ }
+
+ ++*in_pos;
+ return LZMA_STREAM_END;
+ }
+ }
+ }
+
+ assert(coder->pos < 2);
+ return LZMA_OK;
+}
+#endif
+
+
+static lzma_ret
+filter_flags_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out lzma_attribute((unused)),
+ size_t *restrict out_pos lzma_attribute((unused)),
+ size_t out_size lzma_attribute((unused)),
+ lzma_action action lzma_attribute((unused)))
+{
+ while (*in_pos < in_size || coder->sequence == SEQ_PROPERTIES)
+ switch (coder->sequence) {
+ case SEQ_MISC:
+ // Determine the Filter ID and Size of Filter Properties.
+ if (in[*in_pos] >= 0xE0) {
+ // Using External ID. Prepare the ID
+ // for variable-length integer parsing.
+ coder->options->id = 0;
+
+ if (in[*in_pos] == 0xFF) {
+ // Mark that Size of Filter Properties is
+ // unknown, so we know later that there is
+ // external Size of Filter Properties present.
+ coder->properties_size
+ = LZMA_VLI_VALUE_UNKNOWN;
+ } else {
+ // Take Size of Filter Properties from Misc.
+ coder->properties_size = in[*in_pos] - 0xE0;
+ }
+
+ coder->sequence = SEQ_ID;
+
+ } else {
+ // The Filter ID is the same as Misc.
+ coder->options->id = in[*in_pos];
+
+ // The Size of Filter Properties can be calculated
+ // from Misc too.
+ coder->properties_size = in[*in_pos] / 0x20;
+
+ coder->sequence = SEQ_PROPERTIES;
+ }
+
+ ++*in_pos;
+ break;
+
+ case SEQ_ID: {
+ const lzma_ret ret = lzma_vli_decode(&coder->options->id,
+ &coder->pos, in, in_pos, in_size);
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ if (coder->properties_size == LZMA_VLI_VALUE_UNKNOWN) {
+ // We have also external Size of Filter
+ // Properties. Prepare the size for
+ // variable-length integer parsing.
+ coder->properties_size = 0;
+ coder->sequence = SEQ_SIZE;
+ } else {
+ coder->sequence = SEQ_PROPERTIES;
+ }
+
+ // Reset pos for its next job.
+ coder->pos = 0;
+ break;
+ }
+
+ case SEQ_SIZE: {
+ const lzma_ret ret = lzma_vli_decode(&coder->properties_size,
+ &coder->pos, in, in_pos, in_size);
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ coder->pos = 0;
+ coder->sequence = SEQ_PROPERTIES;
+ break;
+ }
+
+ case SEQ_PROPERTIES: {
+ lzma_ret (*get_properties)(lzma_coder *coder,
+ lzma_allocator *allocator, const uint8_t *in,
+ size_t *in_pos, size_t in_size);
+
+ switch (coder->options->id) {
+#ifdef HAVE_FILTER_COPY
+ case LZMA_FILTER_COPY:
+ return coder->properties_size > 0
+ ? LZMA_HEADER_ERROR : LZMA_STREAM_END;
+#endif
+#ifdef HAVE_FILTER_SUBBLOCK
+ case LZMA_FILTER_SUBBLOCK:
+ get_properties = &properties_subblock;
+ break;
+#endif
+#ifdef HAVE_FILTER_SIMPLE
+# ifdef HAVE_FILTER_X86
+ case LZMA_FILTER_X86:
+# endif
+# ifdef HAVE_FILTER_POWERPC
+ case LZMA_FILTER_POWERPC:
+# endif
+# ifdef HAVE_FILTER_IA64
+ case LZMA_FILTER_IA64:
+# endif
+# ifdef HAVE_FILTER_ARM
+ case LZMA_FILTER_ARM:
+# endif
+# ifdef HAVE_FILTER_ARMTHUMB
+ case LZMA_FILTER_ARMTHUMB:
+# endif
+# ifdef HAVE_FILTER_SPARC
+ case LZMA_FILTER_SPARC:
+# endif
+ get_properties = &properties_simple;
+ break;
+#endif
+#ifdef HAVE_FILTER_DELTA
+ case LZMA_FILTER_DELTA:
+ get_properties = &properties_delta;
+ break;
+#endif
+#ifdef HAVE_FILTER_LZMA
+ case LZMA_FILTER_LZMA:
+ get_properties = &properties_lzma;
+ break;
+#endif
+ default:
+ return LZMA_HEADER_ERROR;
+ }
+
+ return get_properties(coder, allocator, in, in_pos, in_size);
+ }
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+filter_flags_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_filter_flags_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_options_filter *options)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &filter_flags_decode;
+ next->end = &filter_flags_decoder_end;
+ }
+
+ options->id = 0;
+ options->options = NULL;
+
+ next->coder->options = options;
+ next->coder->sequence = SEQ_MISC;
+ next->coder->pos = 0;
+ next->coder->properties_size = 0;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_filter_flags_decoder(lzma_stream *strm, lzma_options_filter *options)
+{
+ lzma_next_strm_init(strm, lzma_filter_flags_decoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/filter_flags_encoder.c b/src/liblzma/common/filter_flags_encoder.c
new file mode 100644
index 0000000..d8f260a
--- /dev/null
+++ b/src/liblzma/common/filter_flags_encoder.c
@@ -0,0 +1,359 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file filter_flags_encoder.c
+/// \brief Decodes a Filter Flags field
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "lzma_encoder.h"
+
+
+/// \brief Calculates the size of the Filter Properties field
+///
+/// This currently can return only LZMA_OK or LZMA_HEADER_ERROR, but
+/// with some new filters it may return also LZMA_PROG_ERROR.
+static lzma_ret
+get_properties_size(uint32_t *size, const lzma_options_filter *options)
+{
+ lzma_ret ret = LZMA_OK;
+
+ switch (options->id) {
+#ifdef HAVE_FILTER_COPY
+ case LZMA_FILTER_COPY:
+ *size = 0;
+ break;
+#endif
+
+#ifdef HAVE_FILTER_SUBBLOCK
+ case LZMA_FILTER_SUBBLOCK:
+ *size = 0;
+ break;
+#endif
+
+#ifdef HAVE_FILTER_SIMPLE
+# ifdef HAVE_FILTER_X86
+ case LZMA_FILTER_X86:
+# endif
+# ifdef HAVE_FILTER_POWERPC
+ case LZMA_FILTER_POWERPC:
+# endif
+# ifdef HAVE_FILTER_IA64
+ case LZMA_FILTER_IA64:
+# endif
+# ifdef HAVE_FILTER_ARM
+ case LZMA_FILTER_ARM:
+# endif
+# ifdef HAVE_FILTER_ARMTHUMB
+ case LZMA_FILTER_ARMTHUMB:
+# endif
+# ifdef HAVE_FILTER_SPARC
+ case LZMA_FILTER_SPARC:
+# endif
+ if (options->options == NULL || ((const lzma_options_simple *)(
+ options->options))->start_offset == 0)
+ *size = 0;
+ else
+ *size = 4;
+ break;
+#endif
+
+#ifdef HAVE_FILTER_DELTA
+ case LZMA_FILTER_DELTA:
+ *size = 1;
+ break;
+#endif
+
+#ifdef HAVE_FILTER_LZMA
+ case LZMA_FILTER_LZMA:
+ *size = 2;
+ break;
+#endif
+
+ default:
+ // Unknown filter - if the Filter ID is a proper VLI,
+ // return LZMA_HEADER_ERROR instead of LZMA_PROG_ERROR,
+ // because it's possible that we just don't have support
+ // compiled in for the requested filter.
+ ret = options->id <= LZMA_VLI_VALUE_MAX
+ ? LZMA_HEADER_ERROR : LZMA_PROG_ERROR;
+ break;
+ }
+
+ return ret;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_filter_flags_size(uint32_t *size, const lzma_options_filter *options)
+{
+ // Get size of Filter Properties.
+ uint32_t prop_size;
+ const lzma_ret ret = get_properties_size(&prop_size, options);
+ if (ret != LZMA_OK)
+ return ret;
+
+ // Size of Filter ID field if it exists.
+ size_t id_size;
+ size_t prop_size_size;
+ if (options->id < 0xE0
+ && (lzma_vli)(prop_size) == options->id / 0x20) {
+ // ID and Size of Filter Properties fit into Misc.
+ id_size = 0;
+ prop_size_size = 0;
+
+ } else {
+ // At least Filter ID is stored using the External ID field.
+ id_size = lzma_vli_size(options->id);
+ if (id_size == 0)
+ return LZMA_PROG_ERROR;
+
+ if (prop_size <= 30) {
+ // Size of Filter Properties fits into Misc still.
+ prop_size_size = 0;
+ } else {
+ // The Size of Filter Properties field is used too.
+ prop_size_size = lzma_vli_size(prop_size);
+ if (prop_size_size == 0)
+ return LZMA_PROG_ERROR;
+ }
+ }
+
+ // 1 is for the Misc field.
+ *size = 1 + id_size + prop_size_size + prop_size;
+
+ return LZMA_OK;
+}
+
+
+#ifdef HAVE_FILTER_SIMPLE
+/// Encodes Filter Properties of the so called simple filters
+static lzma_ret
+properties_simple(uint8_t *out, size_t *out_pos, size_t out_size,
+ const lzma_options_simple *options)
+{
+ if (options == NULL || options->start_offset == 0)
+ return LZMA_OK;
+
+ if (out_size - *out_pos < 4)
+ return LZMA_BUF_ERROR;
+
+ for (size_t i = 0; i < 4; ++i)
+ out[(*out_pos)++] = options->start_offset >> (i * 8);
+
+ return LZMA_OK;
+}
+#endif
+
+
+#ifdef HAVE_FILTER_DELTA
+/// Encodes Filter Properties of the Delta filter
+static lzma_ret
+properties_delta(uint8_t *out, size_t *out_pos, size_t out_size,
+ const lzma_options_delta *options)
+{
+ if (options == NULL)
+ return LZMA_PROG_ERROR;
+
+ // It's possible that newer liblzma versions will support larger
+ // distance values.
+ if (options->distance < LZMA_DELTA_DISTANCE_MIN
+ || options->distance > LZMA_DELTA_DISTANCE_MAX)
+ return LZMA_HEADER_ERROR;
+
+ if (out_size - *out_pos < 1)
+ return LZMA_BUF_ERROR;
+
+ out[*out_pos] = options->distance - LZMA_DELTA_DISTANCE_MIN;
+ ++*out_pos;
+
+ return LZMA_OK;
+}
+#endif
+
+
+#ifdef HAVE_FILTER_LZMA
+/// Encodes LZMA Properties and Dictionary Flags (two bytes)
+static lzma_ret
+properties_lzma(uint8_t *out, size_t *out_pos, size_t out_size,
+ const lzma_options_lzma *options)
+{
+ if (options == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (out_size - *out_pos < 2)
+ return LZMA_BUF_ERROR;
+
+ // LZMA Properties
+ if (lzma_lzma_encode_properties(options, out + *out_pos))
+ return LZMA_HEADER_ERROR;
+
+ ++*out_pos;
+
+ // Dictionary flags
+ //
+ // Dictionary size is encoded using six bits of
+ // which one is mantissa and five are exponent.
+ //
+ // There are some limits that must hold to keep
+ // this coding working.
+# if LZMA_DICTIONARY_SIZE_MAX > UINT32_MAX / 2
+# error LZMA_DICTIONARY_SIZE_MAX is too big.
+# endif
+# if LZMA_DICTIONARY_SIZE_MIN < 1
+# error LZMA_DICTIONARY_SIZE_MIN cannot be zero.
+# endif
+
+ // Validate it:
+ if (options->dictionary_size < LZMA_DICTIONARY_SIZE_MIN
+ || options->dictionary_size > LZMA_DICTIONARY_SIZE_MAX)
+ return LZMA_HEADER_ERROR;
+
+ if (options->dictionary_size == 1) {
+ // Special case
+ out[*out_pos] = 0x00;
+ } else {
+ // TODO This could be more elegant.
+ uint32_t i = 1;
+ while (((2 | ((i + 1) & 1)) << ((i - 1) / 2))
+ < options->dictionary_size)
+ ++i;
+ out[*out_pos] = i;
+ }
+
+ ++*out_pos;
+
+ return LZMA_OK;
+}
+#endif
+
+
+extern LZMA_API lzma_ret
+lzma_filter_flags_encode(uint8_t *out, size_t *out_pos, size_t out_size,
+ const lzma_options_filter *options)
+{
+ // Minimum output is one byte (everything fits into Misc).
+ // The caller should have checked that there is enough output space,
+ // so we return LZMA_PROG_ERROR instead of LZMA_BUF_ERROR.
+ if (*out_pos >= out_size)
+ return LZMA_PROG_ERROR;
+
+ // Get size of Filter Properties.
+ uint32_t prop_size;
+ lzma_ret ret = get_properties_size(&prop_size, options);
+ if (ret != LZMA_OK)
+ return ret;
+
+ // Misc, External ID, and Size of Properties
+ if (options->id < 0xE0
+ && (lzma_vli)(prop_size) == options->id / 0x20) {
+ // ID and Size of Filter Properties fit into Misc.
+ out[*out_pos] = options->id;
+ ++*out_pos;
+
+ } else if (prop_size <= 30) {
+ // Size of Filter Properties fits into Misc.
+ out[*out_pos] = prop_size + 0xE0;
+ ++*out_pos;
+
+ // External ID is used to encode the Filter ID. If encoding
+ // the VLI fails, it's because the caller has given as too
+ // little output space, which it should have checked already.
+ // So return LZMA_PROG_ERROR, not LZMA_BUF_ERROR.
+ size_t dummy = 0;
+ if (lzma_vli_encode(options->id, &dummy, 1,
+ out, out_pos, out_size) != LZMA_STREAM_END)
+ return LZMA_PROG_ERROR;
+
+ } else {
+ // Nothing fits into Misc.
+ out[*out_pos] = 0xFF;
+ ++*out_pos;
+
+ // External ID is used to encode the Filter ID.
+ size_t dummy = 0;
+ if (lzma_vli_encode(options->id, &dummy, 1,
+ out, out_pos, out_size) != LZMA_STREAM_END)
+ return LZMA_PROG_ERROR;
+
+ // External Size of Filter Properties
+ dummy = 0;
+ if (lzma_vli_encode(prop_size, &dummy, 1,
+ out, out_pos, out_size) != LZMA_STREAM_END)
+ return LZMA_PROG_ERROR;
+ }
+
+ // Filter Properties
+ switch (options->id) {
+#ifdef HAVE_FILTER_COPY
+ case LZMA_FILTER_COPY:
+ assert(prop_size == 0);
+ ret = options->options == NULL ? LZMA_OK : LZMA_HEADER_ERROR;
+ break;
+#endif
+
+#ifdef HAVE_FILTER_SUBBLOCK
+ case LZMA_FILTER_SUBBLOCK:
+ assert(prop_size == 0);
+ ret = LZMA_OK;
+ break;
+#endif
+
+#ifdef HAVE_FILTER_SIMPLE
+# ifdef HAVE_FILTER_X86
+ case LZMA_FILTER_X86:
+# endif
+# ifdef HAVE_FILTER_POWERPC
+ case LZMA_FILTER_POWERPC:
+# endif
+# ifdef HAVE_FILTER_IA64
+ case LZMA_FILTER_IA64:
+# endif
+# ifdef HAVE_FILTER_ARM
+ case LZMA_FILTER_ARM:
+# endif
+# ifdef HAVE_FILTER_ARMTHUMB
+ case LZMA_FILTER_ARMTHUMB:
+# endif
+# ifdef HAVE_FILTER_SPARC
+ case LZMA_FILTER_SPARC:
+# endif
+ ret = properties_simple(out, out_pos, out_size,
+ options->options);
+ break;
+#endif
+
+#ifdef HAVE_FILTER_DELTA
+ case LZMA_FILTER_DELTA:
+ ret = properties_delta(out, out_pos, out_size,
+ options->options);
+ break;
+#endif
+
+#ifdef HAVE_FILTER_LZMA
+ case LZMA_FILTER_LZMA:
+ ret = properties_lzma(out, out_pos, out_size,
+ options->options);
+ break;
+#endif
+
+ default:
+ assert(0);
+ ret = LZMA_PROG_ERROR;
+ break;
+ }
+
+ return ret;
+}
diff --git a/src/liblzma/common/index.c b/src/liblzma/common/index.c
new file mode 100644
index 0000000..6816b37
--- /dev/null
+++ b/src/liblzma/common/index.c
@@ -0,0 +1,140 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file index.c
+/// \brief Handling of Index in Metadata
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+/**
+ * \brief Duplicates an Index list
+ *
+ * \return A copy of the Index list, or NULL if memory allocation
+ * failed or the original Index was empty.
+ */
+extern LZMA_API lzma_index *
+lzma_index_dup(const lzma_index *old_current, lzma_allocator *allocator)
+{
+ lzma_index *new_head = NULL;
+ lzma_index *new_current = NULL;
+
+ while (old_current != NULL) {
+ lzma_index *i = lzma_alloc(sizeof(lzma_index), allocator);
+ if (i == NULL) {
+ lzma_index_free(new_head, allocator);
+ return NULL;
+ }
+
+ i->total_size = old_current->total_size;
+ i->uncompressed_size = old_current->uncompressed_size;
+ i->next = NULL;
+
+ if (new_head == NULL)
+ new_head = i;
+ else
+ new_current->next = i;
+
+ new_current = i;
+ old_current = old_current->next;
+ }
+
+ return new_head;
+}
+
+
+/**
+ * \brief Frees an Index list
+ *
+ * All Index Recors in the list are freed. This function is convenient when
+ * getting rid of lzma_metadata structures containing an Index.
+ */
+extern LZMA_API void
+lzma_index_free(lzma_index *i, lzma_allocator *allocator)
+{
+ while (i != NULL) {
+ lzma_index *tmp = i->next;
+ lzma_free(i, allocator);
+ i = tmp;
+ }
+
+ return;
+}
+
+
+/**
+ * \brief Calculates properties of an Index list
+ *
+ *
+ */
+extern LZMA_API lzma_ret
+lzma_index_count(const lzma_index *i, size_t *count,
+ lzma_vli *lzma_restrict total_size,
+ lzma_vli *lzma_restrict uncompressed_size)
+{
+ *count = 0;
+ *total_size = 0;
+ *uncompressed_size = 0;
+
+ while (i != NULL) {
+ if (i->total_size == LZMA_VLI_VALUE_UNKNOWN) {
+ *total_size = LZMA_VLI_VALUE_UNKNOWN;
+ } else if (i->total_size > LZMA_VLI_VALUE_MAX) {
+ return LZMA_PROG_ERROR;
+ } else if (*total_size != LZMA_VLI_VALUE_UNKNOWN) {
+ *total_size += i->total_size;
+ if (*total_size > LZMA_VLI_VALUE_MAX)
+ return LZMA_PROG_ERROR;
+ }
+
+ if (i->uncompressed_size == LZMA_VLI_VALUE_UNKNOWN) {
+ *uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ } else if (i->uncompressed_size > LZMA_VLI_VALUE_MAX) {
+ return LZMA_PROG_ERROR;
+ } else if (*uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ *uncompressed_size += i->uncompressed_size;
+ if (*uncompressed_size > LZMA_VLI_VALUE_MAX)
+ return LZMA_PROG_ERROR;
+ }
+
+ ++*count;
+ i = i->next;
+ }
+
+ // FIXME ?
+ if (*total_size == LZMA_VLI_VALUE_UNKNOWN
+ || *uncompressed_size == LZMA_VLI_VALUE_UNKNOWN)
+ return LZMA_HEADER_ERROR;
+
+ return LZMA_OK;
+}
+
+
+
+extern LZMA_API lzma_bool
+lzma_index_is_equal(const lzma_index *a, const lzma_index *b)
+{
+ while (a != NULL && b != NULL) {
+ if (a->total_size != b->total_size || a->uncompressed_size
+ != b->uncompressed_size)
+ return false;
+
+ a = a->next;
+ b = b->next;
+ }
+
+ return a == b;
+}
diff --git a/src/liblzma/common/info.c b/src/liblzma/common/info.c
new file mode 100644
index 0000000..2a59a02
--- /dev/null
+++ b/src/liblzma/common/info.c
@@ -0,0 +1,823 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file info.c
+/// \brief Collects and verifies integrity of Stream size information
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+struct lzma_info_s {
+ struct {
+ /// Known Size of Header Metadata Block; here's some
+ /// special things:
+ /// - LZMA_VLI_VALUE_UNKNOWN indicates that we don't know
+ /// if Header Metadata Block is present.
+ /// - 0 indicates that Header Metadata Block is not present.
+ lzma_vli header_metadata_size;
+
+ /// Known Total Size of the Data Blocks in the Stream
+ lzma_vli total_size;
+
+ /// Known Uncompressed Size of the Data Blocks in the Stream
+ lzma_vli uncompressed_size;
+
+ /// Known Size of Footer Metadata Block
+ lzma_vli footer_metadata_size;
+ } known;
+
+ struct {
+ /// Sum of Total Size fields stored to the Index so far
+ lzma_vli total_size;
+
+ /// Sum of Uncompressed Size fields stored to the Index so far
+ lzma_vli uncompressed_size;
+
+ /// First Index Record in the list, or NULL if Index is empty.
+ lzma_index *head;
+
+ /// Number of Index Records
+ size_t record_count;
+
+ /// Number of Index Records
+ size_t incomplete_count;
+
+ /// True when we know that no more Records will get added
+ /// to the Index.
+ bool is_final;
+ } index;
+
+ /// Start offset of the Stream. This is needed to calculate
+ /// lzma_info_iter.stream_offset.
+ lzma_vli stream_start_offset;
+
+ /// True if Index is present in Header Metadata Block
+ bool has_index_in_header_metadata;
+};
+
+
+//////////////////////
+// Create/Reset/End //
+//////////////////////
+
+static void
+index_init(lzma_info *info)
+{
+ info->index.total_size = 0;
+ info->index.uncompressed_size = 0;
+ info->index.head = NULL;
+ info->index.record_count = 0;
+ info->index.incomplete_count = 0;
+ info->index.is_final = false;
+ return;
+}
+
+
+static void
+info_init(lzma_info *info)
+{
+ info->known.header_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+ info->known.total_size = LZMA_VLI_VALUE_UNKNOWN;
+ info->known.uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ info->known.footer_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+ info->stream_start_offset = 0;
+ info->has_index_in_header_metadata = false;
+
+ index_init(info);
+
+ return;
+}
+
+
+extern LZMA_API lzma_info *
+lzma_info_init(lzma_info *info, lzma_allocator *allocator)
+{
+ if (info == NULL)
+ info = lzma_alloc(sizeof(lzma_info), allocator);
+ else
+ lzma_index_free(info->index.head, allocator);
+
+ if (info != NULL)
+ info_init(info);
+
+ return info;
+}
+
+
+extern LZMA_API void
+lzma_info_free(lzma_info *info, lzma_allocator *allocator)
+{
+ lzma_index_free(info->index.head, allocator);
+ lzma_free(info, allocator);
+ return;
+}
+
+
+/////////
+// Set //
+/////////
+
+static lzma_ret
+set_size(lzma_vli new_size, lzma_vli *known_size, lzma_vli index_size,
+ bool forbid_zero)
+{
+ assert(new_size <= LZMA_VLI_VALUE_MAX);
+
+ lzma_ret ret = LZMA_OK;
+
+ if (forbid_zero && new_size == 0)
+ ret = LZMA_PROG_ERROR;
+ else if (index_size > new_size)
+ ret = LZMA_DATA_ERROR;
+ else if (*known_size == LZMA_VLI_VALUE_UNKNOWN)
+ *known_size = new_size;
+ else if (*known_size != new_size)
+ ret = LZMA_DATA_ERROR;
+
+ return ret;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_info_size_set(lzma_info *info, lzma_info_size type, lzma_vli size)
+{
+ if (size > LZMA_VLI_VALUE_MAX)
+ return LZMA_PROG_ERROR;
+
+ switch (type) {
+ case LZMA_INFO_STREAM_START:
+ info->stream_start_offset = size;
+ return LZMA_OK;
+
+ case LZMA_INFO_HEADER_METADATA:
+ return set_size(size, &info->known.header_metadata_size,
+ 0, false);
+
+ case LZMA_INFO_TOTAL:
+ return set_size(size, &info->known.total_size,
+ info->index.total_size, true);
+
+ case LZMA_INFO_UNCOMPRESSED:
+ return set_size(size, &info->known.uncompressed_size,
+ info->index.uncompressed_size, false);
+
+ case LZMA_INFO_FOOTER_METADATA:
+ return set_size(size, &info->known.footer_metadata_size,
+ 0, true);
+ }
+
+ return LZMA_PROG_ERROR;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_info_index_set(lzma_info *info, lzma_allocator *allocator,
+ lzma_index *i_new, lzma_bool eat_index)
+{
+ if (i_new == NULL)
+ return LZMA_PROG_ERROR;
+
+ lzma_index *i_old = info->index.head;
+
+ if (i_old != NULL) {
+ while (true) {
+ // If the new Index has fewer Records than the old one,
+ // the new Index cannot be valid.
+ if (i_new == NULL)
+ return LZMA_DATA_ERROR;
+
+ // The new Index must be complete i.e. no unknown
+ // values.
+ if (i_new->total_size > LZMA_VLI_VALUE_MAX
+ || i_new->uncompressed_size
+ > LZMA_VLI_VALUE_MAX) {
+ if (eat_index)
+ lzma_index_free(i_new, allocator);
+
+ return LZMA_PROG_ERROR;
+ }
+
+ // Compare the values from the new Index with the old
+ // Index. The old Index may be incomplete; in that
+ // case we
+ // - use the value from the new Index as is;
+ // - update the appropriate info->index.foo_size; and
+ // - decrease the count of incomplete Index Records.
+ bool was_incomplete = false;
+
+ if (i_old->total_size == LZMA_VLI_VALUE_UNKNOWN) {
+ assert(!info->index.is_final);
+ was_incomplete = true;
+
+ i_old->total_size = i_new->total_size;
+
+ if (lzma_vli_add(info->index.total_size,
+ i_new->total_size)) {
+ if (eat_index)
+ lzma_index_free(i_new,
+ allocator);
+
+ return LZMA_PROG_ERROR;
+ }
+ } else if (i_old->total_size != i_new->total_size) {
+ if (eat_index)
+ lzma_index_free(i_new, allocator);
+
+ return LZMA_DATA_ERROR;
+ }
+
+ if (i_old->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN) {
+ assert(!info->index.is_final);
+ was_incomplete = true;
+
+ i_old->uncompressed_size
+ = i_new->uncompressed_size;
+
+ if (lzma_vli_add(info->index.uncompressed_size,
+ i_new->uncompressed_size)) {
+ if (eat_index)
+ lzma_index_free(i_new,
+ allocator);
+
+ return LZMA_PROG_ERROR;
+ }
+ } else if (i_old->uncompressed_size
+ != i_new->uncompressed_size) {
+ if (eat_index)
+ lzma_index_free(i_new, allocator);
+
+ return LZMA_DATA_ERROR;
+ }
+
+ if (was_incomplete) {
+ assert(!info->index.is_final);
+ assert(info->index.incomplete_count > 0);
+ --info->index.incomplete_count;
+ }
+
+ // Get rid of *i_new. It's now identical with *i_old.
+ lzma_index *tmp = i_new->next;
+ if (eat_index)
+ lzma_free(i_new, allocator);
+
+ i_new = tmp;
+
+ // We want to leave i_old pointing to the last
+ // Index Record in the old Index. This way we can
+ // concatenate the possible new Records from i_new.
+ if (i_old->next == NULL)
+ break;
+
+ i_old = i_old->next;
+ }
+ }
+
+ assert(info->index.incomplete_count == 0);
+
+ // If Index was already known to be final, i_new must be NULL now.
+ // The new Index cannot contain more Records that we already have.
+ if (info->index.is_final) {
+ assert(info->index.head != NULL);
+
+ if (i_new != NULL) {
+ if (eat_index)
+ lzma_index_free(i_new, allocator);
+
+ return LZMA_DATA_ERROR;
+ }
+
+ return LZMA_OK;
+ }
+
+ // The rest of the new Index is merged to the old Index. Keep the
+ // current i_new pointer in available. We need it when merging the
+ // new Index with the old one, and if an error occurs so we can
+ // get rid of the broken part of the new Index.
+ lzma_index *i_start = i_new;
+ while (i_new != NULL) {
+ // The new Index must be complete i.e. no unknown values.
+ if (i_new->total_size > LZMA_VLI_VALUE_MAX
+ || i_new->uncompressed_size
+ > LZMA_VLI_VALUE_MAX) {
+ if (eat_index)
+ lzma_index_free(i_start, allocator);
+
+ return LZMA_PROG_ERROR;
+ }
+
+ // Update info->index.foo_sizes.
+ if (lzma_vli_add(info->index.total_size, i_new->total_size)
+ || lzma_vli_add(info->index.uncompressed_size,
+ i_new->uncompressed_size)) {
+ if (eat_index)
+ lzma_index_free(i_start, allocator);
+
+ return LZMA_PROG_ERROR;
+ }
+
+ ++info->index.record_count;
+ i_new = i_new->next;
+ }
+
+ // All the Records in the new Index are good, and info->index.foo_sizes
+ // were successfully updated.
+ if (lzma_info_index_finish(info) != LZMA_OK) {
+ if (eat_index)
+ lzma_index_free(i_start, allocator);
+
+ return LZMA_DATA_ERROR;
+ }
+
+ // The Index is ready to be merged. If we aren't supposed to eat
+ // the Index, make a copy of it first.
+ if (!eat_index && i_start != NULL) {
+ i_start = lzma_index_dup(i_start, allocator);
+ if (i_start == NULL)
+ return LZMA_MEM_ERROR;
+ }
+
+ // Concatenate the new Index with the old one. Note that it is
+ // possible that we don't have any old Index.
+ if (info->index.head == NULL)
+ info->index.head = i_start;
+ else
+ i_old->next = i_start;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_info_metadata_set(lzma_info *info, lzma_allocator *allocator,
+ lzma_metadata *metadata, lzma_bool is_header_metadata,
+ lzma_bool eat_index)
+{
+ // Validate *metadata.
+ if (!lzma_vli_is_valid(metadata->header_metadata_size)
+ || !lzma_vli_is_valid(metadata->total_size)
+ || !lzma_vli_is_valid(metadata->uncompressed_size)) {
+ if (eat_index) {
+ lzma_index_free(metadata->index, allocator);
+ metadata->index = NULL;
+ }
+
+ return LZMA_PROG_ERROR;
+ }
+
+ // Index
+ if (metadata->index != NULL) {
+ if (is_header_metadata)
+ info->has_index_in_header_metadata = true;
+
+ const lzma_ret ret = lzma_info_index_set(
+ info, allocator, metadata->index, eat_index);
+ if (ret != LZMA_OK)
+ return ret;
+
+ } else if (!is_header_metadata
+ && (metadata->total_size == LZMA_VLI_VALUE_UNKNOWN
+ || !info->has_index_in_header_metadata)) {
+ // Either Total Size or Index must be present in Footer
+ // Metadata Block. If Index is not present, it must have
+ // already been in the Header Metadata Block. Since we
+ // got here, these conditions weren't met.
+ return LZMA_DATA_ERROR;
+ }
+
+ // Size of Header Metadata
+ if (!is_header_metadata) {
+ // If it is marked unknown in Metadata, it means that
+ // it's not present.
+ const lzma_vli size = metadata->header_metadata_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ ? metadata->header_metadata_size : 0;
+ const lzma_ret ret = lzma_info_size_set(
+ info, LZMA_INFO_HEADER_METADATA, size);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ // Total Size
+ if (metadata->total_size != LZMA_VLI_VALUE_UNKNOWN) {
+ const lzma_ret ret = lzma_info_size_set(info,
+ LZMA_INFO_TOTAL, metadata->total_size);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ // Uncompressed Size
+ if (metadata->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ const lzma_ret ret = lzma_info_size_set(info,
+ LZMA_INFO_UNCOMPRESSED,
+ metadata->uncompressed_size);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ return LZMA_OK;
+}
+
+
+/////////
+// Get //
+/////////
+
+extern LZMA_API lzma_vli
+lzma_info_size_get(const lzma_info *info, lzma_info_size type)
+{
+ switch (type) {
+ case LZMA_INFO_STREAM_START:
+ return info->stream_start_offset;
+
+ case LZMA_INFO_HEADER_METADATA:
+ return info->known.header_metadata_size;
+
+ case LZMA_INFO_TOTAL:
+ return info->known.total_size;
+
+ case LZMA_INFO_UNCOMPRESSED:
+ return info->known.uncompressed_size;
+
+ case LZMA_INFO_FOOTER_METADATA:
+ return info->known.footer_metadata_size;
+ }
+
+ return LZMA_VLI_VALUE_UNKNOWN;
+}
+
+
+extern LZMA_API lzma_index *
+lzma_info_index_get(lzma_info *info, lzma_bool detach)
+{
+ lzma_index *i = info->index.head;
+
+ if (detach)
+ index_init(info);
+
+ return i;
+}
+
+
+extern LZMA_API size_t
+lzma_info_index_count_get(const lzma_info *info)
+{
+ return info->index.record_count;
+}
+
+
+/////////////////
+// Incremental //
+/////////////////
+
+enum {
+ ITER_INFO,
+ ITER_INDEX,
+ ITER_RESERVED_1,
+ ITER_RESERVED_2,
+};
+
+
+#define iter_info ((lzma_info *)(iter->internal[ITER_INFO]))
+
+#define iter_index ((lzma_index *)(iter->internal[ITER_INDEX]))
+
+
+extern LZMA_API void
+lzma_info_iter_begin(lzma_info *info, lzma_info_iter *iter)
+{
+ *iter = (lzma_info_iter){
+ .total_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .stream_offset = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_offset = LZMA_VLI_VALUE_UNKNOWN,
+ .internal = { info, NULL, NULL, NULL },
+ };
+
+ return;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_info_iter_next(lzma_info_iter *iter, lzma_allocator *allocator)
+{
+ // FIXME debug remove
+ lzma_info *info = iter_info;
+ (void)info;
+
+ if (iter_index == NULL) {
+ // The first call after lzma_info_iter_begin().
+ if (iter_info->known.header_metadata_size
+ == LZMA_VLI_VALUE_UNKNOWN)
+ iter->stream_offset = LZMA_VLI_VALUE_UNKNOWN;
+ else if (lzma_vli_sum3(iter->stream_offset,
+ iter_info->stream_start_offset,
+ LZMA_STREAM_HEADER_SIZE,
+ iter_info->known.header_metadata_size))
+ return LZMA_PROG_ERROR;
+
+ iter->uncompressed_offset = 0;
+
+ if (iter_info->index.head != NULL) {
+ // The first Index Record has already been allocated.
+ iter->internal[ITER_INDEX] = iter_info->index.head;
+ iter->total_size = iter_index->total_size;
+ iter->uncompressed_size
+ = iter_index->uncompressed_size;
+ return LZMA_OK;
+ }
+ } else {
+ // Update iter->*_offsets.
+ if (iter->stream_offset != LZMA_VLI_VALUE_UNKNOWN) {
+ if (iter_index->total_size == LZMA_VLI_VALUE_UNKNOWN)
+ iter->stream_offset = LZMA_VLI_VALUE_UNKNOWN;
+ else if (lzma_vli_add(iter->stream_offset,
+ iter_index->total_size))
+ return LZMA_DATA_ERROR;
+ }
+
+ if (iter->uncompressed_offset != LZMA_VLI_VALUE_UNKNOWN) {
+ if (iter_index->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN)
+ iter->uncompressed_offset
+ = LZMA_VLI_VALUE_UNKNOWN;
+ else if (lzma_vli_add(iter->uncompressed_offset,
+ iter_index->uncompressed_size))
+ return LZMA_DATA_ERROR;
+ }
+
+ if (iter_index->next != NULL) {
+ // The next Record has already been allocated.
+ iter->internal[ITER_INDEX] = iter_index->next;
+ iter->total_size = iter_index->total_size;
+ iter->uncompressed_size
+ = iter_index->uncompressed_size;
+ return LZMA_OK;
+ }
+ }
+
+ // Don't add new Records to a final Index.
+ if (iter_info->index.is_final)
+ return LZMA_DATA_ERROR;
+
+ // Allocate and initialize a new Index Record.
+ lzma_index *i = lzma_alloc(sizeof(lzma_index), allocator);
+ if (i == NULL)
+ return LZMA_MEM_ERROR;
+
+ i->total_size = LZMA_VLI_VALUE_UNKNOWN;
+ i->uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ i->next = NULL;
+
+ iter->total_size = LZMA_VLI_VALUE_UNKNOWN;
+ iter->uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+
+ // Decide where to put the new Index Record.
+ if (iter_info->index.head == NULL)
+ iter_info->index.head = i;
+
+ if (iter_index != NULL)
+ iter_index->next = i;
+
+ iter->internal[ITER_INDEX] = i;
+
+ ++iter_info->index.record_count;
+ ++iter_info->index.incomplete_count;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_info_iter_set(lzma_info_iter *iter,
+ lzma_vli total_size, lzma_vli uncompressed_size)
+{
+ // FIXME debug remove
+ lzma_info *info = iter_info;
+ (void)info;
+
+ if (iter_index == NULL || !lzma_vli_is_valid(total_size)
+ || !lzma_vli_is_valid(uncompressed_size))
+ return LZMA_PROG_ERROR;
+
+ const bool was_incomplete = iter_index->total_size
+ == LZMA_VLI_VALUE_UNKNOWN
+ || iter_index->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN;
+
+ if (total_size != LZMA_VLI_VALUE_UNKNOWN) {
+ if (iter_index->total_size == LZMA_VLI_VALUE_UNKNOWN) {
+ iter_index->total_size = total_size;
+
+ if (lzma_vli_add(iter_info->index.total_size,
+ total_size)
+ || iter_info->index.total_size
+ > iter_info->known.total_size)
+ return LZMA_DATA_ERROR;
+
+ } else if (iter_index->total_size != total_size) {
+ return LZMA_DATA_ERROR;
+ }
+ }
+
+ if (uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ if (iter_index->uncompressed_size == LZMA_VLI_VALUE_UNKNOWN) {
+ iter_index->uncompressed_size = uncompressed_size;
+
+ if (lzma_vli_add(iter_info->index.uncompressed_size,
+ uncompressed_size)
+ || iter_info->index.uncompressed_size
+ > iter_info->known.uncompressed_size)
+ return LZMA_DATA_ERROR;
+
+ } else if (iter_index->uncompressed_size
+ != uncompressed_size) {
+ return LZMA_DATA_ERROR;
+ }
+ }
+
+ // Check if the new information we got managed to finish this
+ // Index Record. If so, update the count of incomplete Index Records.
+ if (was_incomplete && iter_index->total_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && iter_index->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN) {
+ assert(iter_info->index.incomplete_count > 0);
+ --iter_info->index.incomplete_count;
+ }
+
+ // Make sure that the known sizes are now available in *iter.
+ iter->total_size = iter_index->total_size;
+ iter->uncompressed_size = iter_index->uncompressed_size;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_info_index_finish(lzma_info *info)
+{
+ if (info->index.record_count == 0 || info->index.incomplete_count > 0
+ || lzma_info_size_set(info, LZMA_INFO_TOTAL,
+ info->index.total_size)
+ || lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED,
+ info->index.uncompressed_size))
+ return LZMA_DATA_ERROR;
+
+ info->index.is_final = true;
+
+ return LZMA_OK;
+}
+
+
+//////////////
+// Locating //
+//////////////
+
+extern LZMA_API lzma_vli
+lzma_info_metadata_locate(const lzma_info *info, lzma_bool is_header_metadata)
+{
+ bool error = false;
+ lzma_vli size = 0;
+
+ if (info->known.header_metadata_size == LZMA_VLI_VALUE_UNKNOWN) {
+ // We don't know if Header Metadata Block is present, thus
+ // we cannot locate it either.
+ //
+ // Well, you could say that just assume that it is present.
+ // I'm not sure if this is useful. But it can be useful to
+ // be able to use this function and get LZMA_VLI_VALUE_UNKNOWN
+ // to detect that Header Metadata Block wasn't present.
+ error = true;
+ } else if (is_header_metadata) {
+ error = lzma_vli_sum(size, info->stream_start_offset,
+ LZMA_STREAM_HEADER_SIZE);
+ } else if (!info->index.is_final) {
+ // Since we don't know if we have all the Index Records yet,
+ // we cannot know where the Footer Metadata Block is.
+ error = true;
+ } else {
+ error = lzma_vli_sum4(size, info->stream_start_offset,
+ LZMA_STREAM_HEADER_SIZE,
+ info->known.header_metadata_size,
+ info->known.total_size);
+ }
+
+ return error ? LZMA_VLI_VALUE_UNKNOWN : size;
+}
+
+
+extern LZMA_API uint32_t
+lzma_info_metadata_alignment_get(
+ const lzma_info *info, lzma_bool is_header_metadata)
+{
+ uint32_t alignment;
+
+ if (is_header_metadata) {
+ alignment = info->stream_start_offset
+ + LZMA_STREAM_HEADER_SIZE;
+ } else {
+ alignment = info->stream_start_offset + LZMA_STREAM_HEADER_SIZE
+ + info->known.header_metadata_size
+ + info->known.total_size;
+ }
+
+ return alignment;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_info_iter_locate(lzma_info_iter *iter, lzma_allocator *allocator,
+ lzma_vli uncompressed_offset, lzma_bool allow_alloc)
+{
+ if (iter == NULL || uncompressed_offset > LZMA_VLI_VALUE_MAX)
+ return LZMA_PROG_ERROR;
+
+ // Quick check in case Index is final.
+ if (iter_info->index.is_final) {
+ assert(iter_info->known.uncompressed_size
+ == iter_info->index.uncompressed_size);
+ if (uncompressed_offset >= iter_info->index.uncompressed_size)
+ return LZMA_DATA_ERROR;
+ }
+
+ // TODO: Optimize so that it uses existing info from *iter when
+ // seeking forward.
+
+ // Initialize *iter
+ if (iter_info->known.header_metadata_size != LZMA_VLI_VALUE_UNKNOWN) {
+ if (lzma_vli_sum3(iter->stream_offset,
+ iter_info->stream_start_offset,
+ LZMA_STREAM_HEADER_SIZE,
+ iter_info->known.header_metadata_size))
+ return LZMA_PROG_ERROR;
+ } else {
+ // We don't know the Size of Header Metadata Block, thus
+ // we cannot calculate the Stream offset either.
+ iter->stream_offset = LZMA_VLI_VALUE_UNKNOWN;
+ }
+
+ iter->uncompressed_offset = 0;
+
+ // If we have no Index Records, it's obvious that we need to
+ // add a new one.
+ if (iter_info->index.head == NULL) {
+ assert(!iter_info->index.is_final);
+ if (!allow_alloc)
+ return LZMA_DATA_ERROR;
+
+ return lzma_info_iter_next(iter, allocator);
+ }
+
+ // Locate an appropriate Index Record.
+ lzma_index *i = iter_info->index.head;
+ while (true) {
+ // - If Uncompressed Size in the Record is unknown,
+ // we have no chance to search further.
+ // - If the next Record would go past the requested offset,
+ // we have found our target Data Block.
+ if (i->uncompressed_size == LZMA_VLI_VALUE_UNKNOWN
+ || iter->uncompressed_offset
+ + i->uncompressed_size > uncompressed_offset) {
+ iter->total_size = i->total_size;
+ iter->uncompressed_size = i->uncompressed_size;
+ iter->internal[ITER_INDEX] = i;
+ return LZMA_OK;
+ }
+
+ // Update the stream offset. It may be unknown if we didn't
+ // know the size of Header Metadata Block.
+ if (iter->stream_offset != LZMA_VLI_VALUE_UNKNOWN)
+ if (lzma_vli_add(iter->stream_offset, i->total_size))
+ return LZMA_PROG_ERROR;
+
+ // Update the uncompressed offset. This cannot overflow since
+ // the Index is known to be valid.
+ iter->uncompressed_offset += i->uncompressed_size;
+
+ // Move to the next Block.
+ if (i->next == NULL) {
+ assert(!iter_info->index.is_final);
+ if (!allow_alloc)
+ return LZMA_DATA_ERROR;
+
+ iter->internal[ITER_INDEX] = i;
+ return lzma_info_iter_next(iter, allocator);
+ }
+
+ i = i->next;
+ }
+}
diff --git a/src/liblzma/common/init.c b/src/liblzma/common/init.c
new file mode 100644
index 0000000..fb377f5
--- /dev/null
+++ b/src/liblzma/common/init.c
@@ -0,0 +1,39 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file init.c
+/// \brief Static internal initializations
+///
+/// The initializations have been splitted to so many small files to prevent
+/// an application needing only decoder functions from statically linking
+/// also the encoder functions.
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API void
+lzma_init(void)
+{
+#ifdef HAVE_ENCODER
+ lzma_init_encoder();
+#endif
+
+#ifdef HAVE_DECODER
+ lzma_init_decoder();
+#endif
+
+ return;
+}
diff --git a/src/liblzma/common/init_decoder.c b/src/liblzma/common/init_decoder.c
new file mode 100644
index 0000000..2d61b45
--- /dev/null
+++ b/src/liblzma/common/init_decoder.c
@@ -0,0 +1,33 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file init_decoder.c
+/// \brief Static internal initializations
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API void
+lzma_init_decoder(void)
+{
+ // So far there's no decoder-specific stuff to initialize.
+
+#ifdef HAVE_CHECK
+ lzma_init_check();
+#endif
+
+ return;
+}
diff --git a/src/liblzma/common/init_encoder.c b/src/liblzma/common/init_encoder.c
new file mode 100644
index 0000000..4d3da50
--- /dev/null
+++ b/src/liblzma/common/init_encoder.c
@@ -0,0 +1,44 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file init_encoder.c
+/// \brief Static internal initializations
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "range_encoder.h"
+#include "lzma_encoder.h"
+
+
+extern LZMA_API void
+lzma_init_encoder(void)
+{
+ static bool already_initialized = false;
+ if (already_initialized)
+ return;
+
+#ifdef HAVE_CHECK
+ lzma_init_check();
+#endif
+
+// FIXME TODO Create precalculated tables.
+#if defined(HAVE_ENCODER) && defined(HAVE_FILTER_LZMA)
+ lzma_rc_init();
+ lzma_fastpos_init();
+#endif
+
+ already_initialized = true;
+ return;
+}
diff --git a/src/liblzma/common/memory_limitter.c b/src/liblzma/common/memory_limitter.c
new file mode 100644
index 0000000..19cdefc
--- /dev/null
+++ b/src/liblzma/common/memory_limitter.c
@@ -0,0 +1,200 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file memory_limitter.c
+/// \brief Limitting memory usage
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+/// Rounds an unsigned integer upwards to the next multiple.
+#define my_ceil(num, multiple) \
+ ((num) + (((multiple) - ((num) % (multiple))) % (multiple)))
+
+
+/// Rounds upwards to the next multiple of 2 * sizeof(void*).
+/// malloc() tends to align allocations this way.
+#define malloc_ceil(num) my_ceil(num, 2 * sizeof(void *))
+
+
+typedef struct lzma_memlimit_list_s lzma_memlimit_list;
+struct lzma_memlimit_list_s {
+ lzma_memlimit_list *next;
+ void *ptr;
+ size_t size;
+};
+
+
+struct lzma_memlimit_s {
+ size_t used;
+ size_t limit;
+ lzma_memlimit_list *list;
+};
+
+
+extern LZMA_API lzma_memlimit *
+lzma_memlimit_create(size_t limit)
+{
+ if (limit < sizeof(lzma_memlimit))
+ return NULL;
+
+ lzma_memlimit *mem = malloc(sizeof(lzma_memlimit));
+
+ if (mem != NULL) {
+ mem->used = sizeof(lzma_memlimit);
+ mem->limit = limit;
+ mem->list = NULL;
+ }
+
+ return mem;
+}
+
+
+extern LZMA_API void
+lzma_memlimit_set(lzma_memlimit *mem, size_t limit)
+{
+ mem->limit = limit;
+ return;
+}
+
+
+extern LZMA_API size_t
+lzma_memlimit_get(const lzma_memlimit *mem)
+{
+ return mem->limit;
+}
+
+
+extern LZMA_API size_t
+lzma_memlimit_used(const lzma_memlimit *mem)
+{
+ return mem->used;
+}
+
+
+extern LZMA_API void
+lzma_memlimit_end(lzma_memlimit *mem, lzma_bool free_allocated)
+{
+ if (mem == NULL)
+ return;
+
+ lzma_memlimit_list *record = mem->list;
+ while (record != NULL) {
+ if (free_allocated)
+ free(record->ptr);
+
+ lzma_memlimit_list *tmp = record;
+ record = record->next;
+ free(tmp);
+ }
+
+ free(mem);
+
+ return;
+}
+
+
+extern LZMA_API void *
+lzma_memlimit_alloc(lzma_memlimit *mem, size_t nmemb, size_t size)
+{
+ // While liblzma always sets nmemb to one, do this multiplication
+ // to make these functions usable e.g. with zlib and libbzip2.
+ // Making sure that this doesn't overflow is up to the application.
+ size *= nmemb;
+
+ // Some malloc() implementations return NULL on malloc(0). We like
+ // to get a non-NULL value.
+ if (size == 0)
+ size = 1;
+
+ // Calculate how much memory we are going to allocate in reality.
+ // TODO: We should add some rough estimate how much malloc() needs
+ // for its internal structures.
+ const size_t total_size = malloc_ceil(size)
+ + malloc_ceil(sizeof(lzma_memlimit_list));
+
+ // Integer overflow protection
+ if (SIZE_MAX - size <= total_size)
+ return NULL;
+
+ if (mem->limit < mem->used || mem->limit - mem->used < total_size)
+ return NULL;
+
+ lzma_memlimit_list *record = malloc(sizeof(lzma_memlimit_list));
+ void *ptr = malloc(size);
+
+ if (record == NULL || ptr == NULL) {
+ free(record);
+ free(ptr);
+ return NULL;
+ }
+
+ // Add the new entry to the beginning of the list. This should be
+ // more efficient when freeing memory, because usually it is
+ // "last allocated, first freed".
+ record->next = mem->list;
+ record->ptr = ptr;
+ record->size = total_size;
+
+ mem->list = record;
+ mem->used += total_size;
+
+ return ptr;
+}
+
+
+extern LZMA_API void
+lzma_memlimit_detach(lzma_memlimit *mem, void *ptr)
+{
+ if (ptr == NULL || mem->list == NULL)
+ return;
+
+ lzma_memlimit_list *record = mem->list;
+ lzma_memlimit_list *prev = NULL;
+
+ while (record->ptr != ptr) {
+ prev = record;
+ record = record->next;
+ if (record == NULL)
+ return;
+ }
+
+ if (prev != NULL)
+ prev->next = record->next;
+ else
+ mem->list = record->next;
+
+ assert(mem->used >= record->size);
+ mem->used -= record->size;
+
+ free(record);
+
+ return;
+}
+
+
+extern LZMA_API void
+lzma_memlimit_free(lzma_memlimit *mem, void *ptr)
+{
+ if (ptr == NULL)
+ return;
+
+ lzma_memlimit_detach(mem, ptr);
+
+ free(ptr);
+
+ return;
+}
diff --git a/src/liblzma/common/memory_usage.c b/src/liblzma/common/memory_usage.c
new file mode 100644
index 0000000..b6f2795
--- /dev/null
+++ b/src/liblzma/common/memory_usage.c
@@ -0,0 +1,113 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file memory_usage.c
+/// \brief Calculate rough amount of memory required by filters
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+#include "lz_encoder.h"
+#include "lzma_literal.h"
+
+
+static uint64_t
+get_usage(const lzma_options_filter *filter, bool is_encoder)
+{
+ uint64_t ret;
+
+ switch (filter->id) {
+ case LZMA_FILTER_COPY:
+ case LZMA_FILTER_X86:
+ case LZMA_FILTER_POWERPC:
+ case LZMA_FILTER_IA64:
+ case LZMA_FILTER_ARM:
+ case LZMA_FILTER_ARMTHUMB:
+ case LZMA_FILTER_SPARC:
+ case LZMA_FILTER_DELTA:
+ // These don't require any significant amount of memory.
+ ret = 0;
+ break;
+
+ case LZMA_FILTER_SUBBLOCK:
+ if (is_encoder) {
+ const lzma_options_subblock *options = filter->options;
+ ret = options->subblock_data_size;
+ } else {
+ ret = 0;
+ }
+ break;
+
+#ifdef HAVE_FILTER_LZMA
+ case LZMA_FILTER_LZMA: {
+ const lzma_options_lzma *options = filter->options;
+
+ // Literal coder - this can be signficant if both values are
+ // big, or if sizeof(probability) is big.
+ ret = literal_states(options->literal_context_bits,
+ options->literal_pos_bits) * LIT_SIZE
+ * sizeof(probability);
+
+ // Dictionary base size
+ ret += options->dictionary_size;
+
+ if (is_encoder) {
+# ifdef HAVE_ENCODER
+ // This is rough, but should be accurate enough
+ // in practice.
+ ret += options->dictionary_size / 2;
+
+ uint32_t dummy1;
+ uint32_t dummy2;
+ uint32_t num_items;
+ if (lzma_lz_encoder_hash_properties(
+ options->match_finder,
+ options->dictionary_size,
+ &dummy1, &dummy2, &num_items))
+ return UINT64_MAX;
+
+ ret += (uint64_t)(num_items) * sizeof(uint32_t);
+# else
+ return UINT64_MAX;
+# endif
+ }
+
+ break;
+ }
+#endif
+
+ default:
+ return UINT64_MAX;
+ }
+
+ return ret;
+}
+
+
+extern LZMA_API uint32_t
+lzma_memory_usage(const lzma_options_filter *filters, lzma_bool is_encoder)
+{
+ uint64_t usage = 0;
+
+ for (size_t i = 0; filters[i].id != UINT64_MAX; ++i) {
+ const uint64_t ret = get_usage(filters + i, is_encoder);
+ if (ret == UINT64_MAX)
+ return UINT32_MAX;
+
+ usage += ret;
+ }
+
+ // Convert to mebibytes with rounding.
+ return usage / (1024 * 1024) + (usage % (1024 * 1024) >= 512 ? 1 : 0);
+}
diff --git a/src/liblzma/common/metadata_decoder.c b/src/liblzma/common/metadata_decoder.c
new file mode 100644
index 0000000..f2ac6c1
--- /dev/null
+++ b/src/liblzma/common/metadata_decoder.c
@@ -0,0 +1,555 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file metadata_decoder.c
+/// \brief Decodes metadata stored in Metadata Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "metadata_decoder.h"
+#include "block_decoder.h"
+
+
+/// Maximum size of a single Extra Record. Again, this is mostly to make
+/// sure that the parsed lzma_vli fits into size_t. Still, maybe this should
+/// be smaller.
+#define EXTRA_SIZE_MAX (SIZE_MAX / 4)
+
+
+struct lzma_coder_s {
+ enum {
+ SEQ_FLAGS,
+ SEQ_HEADER_METADATA_SIZE,
+ SEQ_TOTAL_SIZE,
+ SEQ_UNCOMPRESSED_SIZE,
+ SEQ_INDEX_COUNT,
+ SEQ_INDEX_ALLOC,
+ SEQ_INDEX_TOTAL_SIZE,
+ SEQ_INDEX_UNCOMPRESSED_SIZE,
+ SEQ_EXTRA_PREPARE,
+ SEQ_EXTRA_ALLOC,
+ SEQ_EXTRA_ID,
+ SEQ_EXTRA_SIZE,
+ SEQ_EXTRA_DATA_ALLOC,
+ SEQ_EXTRA_DATA_COPY,
+ SEQ_EXTRA_DUMMY_ALLOC,
+ SEQ_EXTRA_DUMMY_ID,
+ SEQ_EXTRA_DUMMY_SIZE,
+ SEQ_EXTRA_DUMMY_COPY,
+ } sequence;
+
+ /// Number of "things" left to be parsed. If we hit end of input
+ /// when this isn't zero, we have corrupt Metadata Block.
+ size_t todo_count;
+
+ /// Position in variable-length integers
+ size_t pos;
+
+ /// Temporary variable needed to decode variables whose type
+ /// is size_t instead of lzma_vli.
+ lzma_vli tmp;
+
+ /// Pointer to target structure to hold the parsed results.
+ lzma_metadata *metadata;
+
+ /// The Index Record we currently are parsing
+ lzma_index *index_current;
+
+ /// Number of Records in Index
+ size_t index_count;
+
+ /// Sum of Total Size fields in the Index
+ lzma_vli index_total_size;
+
+ /// Sum of Uncompressed Size fields in the Index
+ lzma_vli index_uncompressed_size;
+
+ /// True if Extra is present.
+ bool has_extra;
+
+ /// True if we have been requested to store the Extra to *metadata.
+ bool want_extra;
+
+ /// Pointer to the end of the Extra Record list.
+ lzma_extra *extra_tail;
+
+ /// Dummy Extra Record used when only verifying integrity of Extra
+ /// (not storing it to RAM).
+ lzma_extra extra_dummy;
+
+ /// Block decoder
+ lzma_next_coder block_decoder;
+
+ /// buffer[buffer_pos] is the next byte to process.
+ size_t buffer_pos;
+
+ /// buffer[buffer_size] is the first byte to not process.
+ size_t buffer_size;
+
+ /// Temporary buffer to which encoded Metadata is read before
+ /// it is parsed.
+ uint8_t buffer[LZMA_BUFFER_SIZE];
+};
+
+
+/// Reads a variable-length integer to coder->num.
+#define read_vli(num) \
+do { \
+ const lzma_ret ret = lzma_vli_decode( \
+ &num, &coder->pos, \
+ coder->buffer, &coder->buffer_pos, \
+ coder->buffer_size); \
+ if (ret != LZMA_STREAM_END) \
+ return ret; \
+ \
+ coder->pos = 0; \
+} while (0)
+
+
+static lzma_ret
+process(lzma_coder *coder, lzma_allocator *allocator)
+{
+ while (coder->buffer_pos < coder->buffer_size)
+ switch (coder->sequence) {
+ case SEQ_FLAGS:
+ // Reserved bits must be unset.
+ if (coder->buffer[coder->buffer_pos] & 0x70)
+ return LZMA_HEADER_ERROR;
+
+ // If Size of Header Metadata is present, prepare the
+ // variable for variable-length integer decoding. Otherwise
+ // set it to LZMA_VLI_VALUE_UNKNOWN to indicate that the
+ // field isn't present.
+ if (coder->buffer[coder->buffer_pos] & 0x01) {
+ coder->metadata->header_metadata_size = 0;
+ ++coder->todo_count;
+ }
+
+ if (coder->buffer[coder->buffer_pos] & 0x02) {
+ coder->metadata->total_size = 0;
+ ++coder->todo_count;
+ }
+
+ if (coder->buffer[coder->buffer_pos] & 0x04) {
+ coder->metadata->uncompressed_size = 0;
+ ++coder->todo_count;
+ }
+
+ if (coder->buffer[coder->buffer_pos] & 0x08) {
+ // Setting index_count to 1 is just to indicate that
+ // Index is present. The real size is parsed later.
+ coder->index_count = 1;
+ ++coder->todo_count;
+ }
+
+ coder->has_extra = (coder->buffer[coder->buffer_pos] & 0x80)
+ != 0;
+
+ ++coder->buffer_pos;
+ coder->sequence = SEQ_HEADER_METADATA_SIZE;
+ break;
+
+ case SEQ_HEADER_METADATA_SIZE:
+ if (coder->metadata->header_metadata_size
+ != LZMA_VLI_VALUE_UNKNOWN) {
+ read_vli(coder->metadata->header_metadata_size);
+
+ if (coder->metadata->header_metadata_size == 0)
+ return LZMA_DATA_ERROR;
+
+ --coder->todo_count;
+ }
+
+ coder->sequence = SEQ_TOTAL_SIZE;
+ break;
+
+ case SEQ_TOTAL_SIZE:
+ if (coder->metadata->total_size != LZMA_VLI_VALUE_UNKNOWN) {
+ read_vli(coder->metadata->total_size);
+
+ if (coder->metadata->total_size == 0)
+ return LZMA_DATA_ERROR;
+
+ --coder->todo_count;
+ }
+
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ break;
+
+ case SEQ_UNCOMPRESSED_SIZE:
+ if (coder->metadata->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN) {
+ read_vli(coder->metadata->uncompressed_size);
+ --coder->todo_count;
+ }
+
+ coder->sequence = SEQ_INDEX_COUNT;
+ break;
+
+ case SEQ_INDEX_COUNT:
+ if (coder->index_count == 0) {
+ coder->sequence = SEQ_EXTRA_PREPARE;
+ break;
+ }
+
+ read_vli(coder->tmp);
+
+ // Index must not be empty nor far too big (wouldn't fit
+ // in RAM).
+ if (coder->tmp == 0 || coder->tmp
+ >= SIZE_MAX / sizeof(lzma_index))
+ return LZMA_DATA_ERROR;
+
+ coder->index_count = (size_t)(coder->tmp);
+ coder->tmp = 0;
+
+ coder->sequence = SEQ_INDEX_ALLOC;
+ break;
+
+ case SEQ_INDEX_ALLOC: {
+ lzma_index *i = lzma_alloc(sizeof(lzma_index), allocator);
+ if (i == NULL)
+ return LZMA_MEM_ERROR;
+
+ i->total_size = 0;
+ i->uncompressed_size = 0;
+ i->next = NULL;
+
+ if (coder->metadata->index == NULL)
+ coder->metadata->index = i;
+ else
+ coder->index_current->next = i;
+
+ coder->index_current = i;
+
+ coder->sequence = SEQ_INDEX_TOTAL_SIZE;
+ }
+
+ // Fall through
+
+ case SEQ_INDEX_TOTAL_SIZE: {
+ read_vli(coder->index_current->total_size);
+
+ coder->index_total_size += coder->index_current->total_size;
+ if (coder->index_total_size > LZMA_VLI_VALUE_MAX)
+ return LZMA_DATA_ERROR;
+
+ // No Block can have Total Size of zero bytes.
+ if (coder->index_current->total_size == 0)
+ return LZMA_DATA_ERROR;
+
+ if (--coder->index_count == 0) {
+ // If Total Size is present, it must match the sum
+ // of Total Sizes in Index.
+ if (coder->metadata->total_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && coder->metadata->total_size
+ != coder->index_total_size)
+ return LZMA_DATA_ERROR;
+
+ coder->index_current = coder->metadata->index;
+ coder->sequence = SEQ_INDEX_UNCOMPRESSED_SIZE;
+ } else {
+ coder->sequence = SEQ_INDEX_ALLOC;
+ }
+
+ break;
+ }
+
+ case SEQ_INDEX_UNCOMPRESSED_SIZE: {
+ read_vli(coder->index_current->uncompressed_size);
+
+ coder->index_uncompressed_size
+ += coder->index_current->uncompressed_size;
+ if (coder->index_uncompressed_size > LZMA_VLI_VALUE_MAX)
+ return LZMA_DATA_ERROR;
+
+ coder->index_current = coder->index_current->next;
+ if (coder->index_current == NULL) {
+ if (coder->metadata->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && coder->metadata->uncompressed_size
+ != coder->index_uncompressed_size)
+ return LZMA_DATA_ERROR;
+
+ --coder->todo_count;
+ coder->sequence = SEQ_EXTRA_PREPARE;
+ }
+
+ break;
+ }
+
+ case SEQ_EXTRA_PREPARE:
+ assert(coder->todo_count == 0);
+
+ // If we get here, we have at least one byte of input left.
+ // If "Extra is present" flag is unset in Metadata Flags,
+ // it means that there is some garbage and we return an error.
+ if (!coder->has_extra)
+ return LZMA_DATA_ERROR;
+
+ if (!coder->want_extra) {
+ coder->extra_tail = &coder->extra_dummy;
+ coder->sequence = SEQ_EXTRA_DUMMY_ALLOC;
+ break;
+ }
+
+ coder->sequence = SEQ_EXTRA_ALLOC;
+
+ // Fall through
+
+ case SEQ_EXTRA_ALLOC: {
+ lzma_extra *e = lzma_alloc(sizeof(lzma_extra), allocator);
+ if (e == NULL)
+ return LZMA_MEM_ERROR;
+
+ e->next = NULL;
+ e->id = 0;
+ e->size = 0;
+ e->data = NULL;
+
+ if (coder->metadata->extra == NULL)
+ coder->metadata->extra = e;
+ else
+ coder->extra_tail->next = e;
+
+ coder->extra_tail = e;
+
+ coder->todo_count = 1;
+ coder->sequence = SEQ_EXTRA_ID;
+ }
+
+ // Fall through
+
+ case SEQ_EXTRA_ID:
+ case SEQ_EXTRA_DUMMY_ID:
+ read_vli(coder->extra_tail->id);
+
+ if (coder->extra_tail->id == 0) {
+ coder->extra_tail->size = 0;
+ coder->extra_tail->data = NULL;
+ coder->todo_count = 0;
+ --coder->sequence;
+ } else {
+ ++coder->sequence;
+ }
+
+ break;
+
+ case SEQ_EXTRA_SIZE:
+ case SEQ_EXTRA_DUMMY_SIZE:
+ read_vli(coder->tmp);
+ ++coder->sequence;
+ break;
+
+ case SEQ_EXTRA_DATA_ALLOC: {
+ if (coder->tmp > EXTRA_SIZE_MAX)
+ return LZMA_DATA_ERROR;
+
+ coder->extra_tail->size = (size_t)(coder->tmp);
+ coder->tmp = 0;
+
+ uint8_t *d = lzma_alloc((size_t)(coder->extra_tail->size),
+ allocator);
+ if (d == NULL)
+ return LZMA_MEM_ERROR;
+
+ coder->extra_tail->data = d;
+ coder->sequence = SEQ_EXTRA_DATA_COPY;
+ }
+
+ // Fall through
+
+ case SEQ_EXTRA_DATA_COPY:
+ bufcpy(coder->buffer, &coder->buffer_pos, coder->buffer_size,
+ coder->extra_tail->data, &coder->pos,
+ (size_t)(coder->extra_tail->size));
+
+ if ((size_t)(coder->extra_tail->size) == coder->pos) {
+ coder->pos = 0;
+ coder->todo_count = 0;
+ coder->sequence = SEQ_EXTRA_ALLOC;
+ }
+
+ break;
+
+ case SEQ_EXTRA_DUMMY_ALLOC:
+ // Not really alloc, just initialize the dummy entry.
+ coder->extra_dummy = (lzma_extra){
+ .next = NULL,
+ .id = 0,
+ .size = 0,
+ .data = NULL,
+ };
+
+ coder->todo_count = 1;
+ coder->sequence = SEQ_EXTRA_DUMMY_ID;
+ break;
+
+ case SEQ_EXTRA_DUMMY_COPY: {
+ // Simply skip as many bytes as indicated by Extra Record Size.
+ // We don't check lzma_extra_size_max because we don't
+ // allocate any memory to hold the data.
+ const size_t in_avail = coder->buffer_size - coder->buffer_pos;
+ const size_t skip = MIN((lzma_vli)(in_avail), coder->tmp);
+ coder->buffer_pos += skip;
+ coder->tmp -= skip;
+
+ if (coder->tmp == 0) {
+ coder->todo_count = 0;
+ coder->sequence = SEQ_EXTRA_DUMMY_ALLOC;
+ }
+
+ break;
+ }
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+metadata_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out lzma_attribute((unused)),
+ size_t *restrict out_pos lzma_attribute((unused)),
+ size_t out_size lzma_attribute((unused)),
+ lzma_action action lzma_attribute((unused)))
+{
+ bool end_was_reached = false;
+
+ while (true) {
+ // Fill the buffer if it is empty.
+ if (coder->buffer_pos == coder->buffer_size) {
+ coder->buffer_pos = 0;
+ coder->buffer_size = 0;
+
+ const lzma_ret ret = coder->block_decoder.code(
+ coder->block_decoder.coder, allocator,
+ in, in_pos, in_size, coder->buffer,
+ &coder->buffer_size, LZMA_BUFFER_SIZE,
+ LZMA_RUN);
+
+ switch (ret) {
+ case LZMA_OK:
+ // Return immediatelly if we got no new data.
+ if (coder->buffer_size == 0)
+ return LZMA_OK;
+
+ break;
+
+ case LZMA_STREAM_END:
+ end_was_reached = true;
+ break;
+
+ default:
+ return ret;
+ }
+ }
+
+ // Process coder->buffer.
+ const lzma_ret ret = process(coder, allocator);
+ if (ret != LZMA_OK)
+ return ret;
+
+ // On success, process() eats all the input.
+ assert(coder->buffer_pos == coder->buffer_size);
+
+ if (end_was_reached) {
+ // Check that the sequence is not in the
+ // middle of anything.
+ if (coder->todo_count != 0)
+ return LZMA_DATA_ERROR;
+
+ return LZMA_STREAM_END;
+ }
+ }
+}
+
+
+static void
+metadata_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+metadata_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options, lzma_metadata *metadata,
+ bool want_extra)
+{
+ if (options == NULL || metadata == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &metadata_decode;
+ next->end = &metadata_decoder_end;
+ next->coder->block_decoder = LZMA_NEXT_CODER_INIT;
+ }
+
+ metadata->header_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+ metadata->total_size = LZMA_VLI_VALUE_UNKNOWN;
+ metadata->uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ metadata->index = NULL;
+ metadata->extra = NULL;
+
+ next->coder->sequence = SEQ_FLAGS;
+ next->coder->todo_count = 0;
+ next->coder->pos = 0;
+ next->coder->tmp = 0;
+ next->coder->metadata = metadata;
+ next->coder->index_current = NULL;
+ next->coder->index_count = 0;
+ next->coder->index_total_size = 0;
+ next->coder->index_uncompressed_size = 0;
+ next->coder->want_extra = want_extra;
+ next->coder->extra_tail = NULL;
+ next->coder->buffer_pos = 0;
+ next->coder->buffer_size = 0;
+
+ return lzma_block_decoder_init(
+ &next->coder->block_decoder, allocator, options);
+}
+
+
+extern lzma_ret
+lzma_metadata_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options, lzma_metadata *metadata,
+ bool want_extra)
+{
+ lzma_next_coder_init(metadata_decoder_init, next, allocator,
+ options, metadata, want_extra);
+}
+
+
+extern LZMA_API lzma_ret
+lzma_metadata_decoder(lzma_stream *strm, lzma_options_block *options,
+ lzma_metadata *metadata, lzma_bool want_extra)
+{
+ lzma_next_strm_init(strm, lzma_metadata_decoder_init,
+ options, metadata, want_extra);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/metadata_decoder.h b/src/liblzma/common/metadata_decoder.h
new file mode 100644
index 0000000..1fba217
--- /dev/null
+++ b/src/liblzma/common/metadata_decoder.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file metadata_decoder.h
+/// \brief Decodes metadata stored in Metadata Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_METADATA_DECODER_H
+#define LZMA_METADATA_DECODER_H
+
+#include "common.h"
+
+
+extern lzma_ret lzma_metadata_decoder_init(
+ lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options, lzma_metadata *metadata,
+ bool want_extra);
+
+#endif
diff --git a/src/liblzma/common/metadata_encoder.c b/src/liblzma/common/metadata_encoder.c
new file mode 100644
index 0000000..17587c5
--- /dev/null
+++ b/src/liblzma/common/metadata_encoder.c
@@ -0,0 +1,436 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file metadata_encoder.c
+/// \brief Encodes metadata to be stored into Metadata Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "metadata_encoder.h"
+#include "block_encoder.h"
+
+
+struct lzma_coder_s {
+ enum {
+ SEQ_FLAGS,
+ SEQ_HEADER_METADATA_SIZE,
+ SEQ_TOTAL_SIZE,
+ SEQ_UNCOMPRESSED_SIZE,
+ SEQ_INDEX_COUNT,
+ SEQ_INDEX_TOTAL,
+ SEQ_INDEX_UNCOMPRESSED,
+ SEQ_EXTRA_ID,
+ SEQ_EXTRA_SIZE,
+ SEQ_EXTRA_DATA,
+ SEQ_END,
+ } sequence;
+
+ /// Position in variable-length integers
+ size_t pos;
+
+ /// Local copy of the Metadata structure. Note that we keep
+ /// a copy only of the main structure, not Index or Extra Records.
+ lzma_metadata metadata;
+
+ /// Number of Records in Index
+ size_t index_count;
+
+ /// Index Record currently being processed
+ const lzma_index *index_current;
+
+ /// Block encoder for the encoded Metadata
+ lzma_next_coder block_encoder;
+
+ /// True once everything except compression has been done.
+ bool end_was_reached;
+
+ /// buffer[buffer_pos] is the first byte that needs to be compressed.
+ size_t buffer_pos;
+
+ /// buffer[buffer_size] is the next position where a byte will be
+ /// written by process().
+ size_t buffer_size;
+
+ /// Temporary buffer to which encoded Metadata is written before
+ /// it is compressed.
+ uint8_t buffer[LZMA_BUFFER_SIZE];
+};
+
+
+#define write_vli(num) \
+do { \
+ const lzma_ret ret = lzma_vli_encode(num, &coder->pos, 1, \
+ coder->buffer, &coder->buffer_size, \
+ LZMA_BUFFER_SIZE); \
+ if (ret != LZMA_STREAM_END) \
+ return ret; \
+ coder->pos = 0; \
+} while (0)
+
+
+static lzma_ret
+process(lzma_coder *coder)
+{
+ while (coder->buffer_size < LZMA_BUFFER_SIZE)
+ switch (coder->sequence) {
+ case SEQ_FLAGS:
+ coder->buffer[coder->buffer_size] = 0;
+
+ if (coder->metadata.header_metadata_size
+ != LZMA_VLI_VALUE_UNKNOWN)
+ coder->buffer[coder->buffer_size] |= 0x01;
+
+ if (coder->metadata.total_size != LZMA_VLI_VALUE_UNKNOWN)
+ coder->buffer[coder->buffer_size] |= 0x02;
+
+ if (coder->metadata.uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN)
+ coder->buffer[coder->buffer_size] |= 0x04;
+
+ if (coder->index_count > 0)
+ coder->buffer[coder->buffer_size] |= 0x08;
+
+ if (coder->metadata.extra != NULL)
+ coder->buffer[coder->buffer_size] |= 0x80;
+
+ ++coder->buffer_size;
+ coder->sequence = SEQ_HEADER_METADATA_SIZE;
+ break;
+
+ case SEQ_HEADER_METADATA_SIZE:
+ if (coder->metadata.header_metadata_size
+ != LZMA_VLI_VALUE_UNKNOWN)
+ write_vli(coder->metadata.header_metadata_size);
+
+ coder->sequence = SEQ_TOTAL_SIZE;
+ break;
+
+ case SEQ_TOTAL_SIZE:
+ if (coder->metadata.total_size != LZMA_VLI_VALUE_UNKNOWN)
+ write_vli(coder->metadata.total_size);
+
+ coder->sequence = SEQ_UNCOMPRESSED_SIZE;
+ break;
+
+ case SEQ_UNCOMPRESSED_SIZE:
+ if (coder->metadata.uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN)
+ write_vli(coder->metadata.uncompressed_size);
+
+ coder->sequence = SEQ_INDEX_COUNT;
+ break;
+
+ case SEQ_INDEX_COUNT:
+ if (coder->index_count == 0) {
+ if (coder->metadata.extra == NULL) {
+ coder->sequence = SEQ_END;
+ return LZMA_STREAM_END;
+ }
+
+ coder->sequence = SEQ_EXTRA_ID;
+ break;
+ }
+
+ write_vli(coder->index_count);
+ coder->sequence = SEQ_INDEX_TOTAL;
+ break;
+
+ case SEQ_INDEX_TOTAL:
+ write_vli(coder->index_current->total_size);
+
+ coder->index_current = coder->index_current->next;
+ if (coder->index_current == NULL) {
+ coder->index_current = coder->metadata.index;
+ coder->sequence = SEQ_INDEX_UNCOMPRESSED;
+ }
+
+ break;
+
+ case SEQ_INDEX_UNCOMPRESSED:
+ write_vli(coder->index_current->uncompressed_size);
+
+ coder->index_current = coder->index_current->next;
+ if (coder->index_current != NULL)
+ break;
+
+ if (coder->metadata.extra != NULL) {
+ coder->sequence = SEQ_EXTRA_ID;
+ break;
+ }
+
+ coder->sequence = SEQ_END;
+ return LZMA_STREAM_END;
+
+ case SEQ_EXTRA_ID: {
+ const lzma_ret ret = lzma_vli_encode(
+ coder->metadata.extra->id, &coder->pos, 1,
+ coder->buffer, &coder->buffer_size,
+ LZMA_BUFFER_SIZE);
+ switch (ret) {
+ case LZMA_OK:
+ break;
+
+ case LZMA_STREAM_END:
+ coder->pos = 0;
+
+ // Handle the special ID 0.
+ if (coder->metadata.extra->id == 0) {
+ coder->metadata.extra
+ = coder->metadata.extra->next;
+ if (coder->metadata.extra == NULL) {
+ coder->sequence = SEQ_END;
+ return LZMA_STREAM_END;
+ }
+
+ coder->sequence = SEQ_EXTRA_ID;
+
+ } else {
+ coder->sequence = SEQ_EXTRA_SIZE;
+ }
+
+ break;
+
+ default:
+ return ret;
+ }
+
+ break;
+ }
+
+ case SEQ_EXTRA_SIZE:
+ if (coder->metadata.extra->size >= (lzma_vli)(SIZE_MAX))
+ return LZMA_HEADER_ERROR;
+
+ write_vli(coder->metadata.extra->size);
+ coder->sequence = SEQ_EXTRA_DATA;
+ break;
+
+ case SEQ_EXTRA_DATA:
+ bufcpy(coder->metadata.extra->data, &coder->pos,
+ coder->metadata.extra->size,
+ coder->buffer, &coder->buffer_size,
+ LZMA_BUFFER_SIZE);
+
+ if ((size_t)(coder->metadata.extra->size) == coder->pos) {
+ coder->metadata.extra = coder->metadata.extra->next;
+ if (coder->metadata.extra == NULL) {
+ coder->sequence = SEQ_END;
+ return LZMA_STREAM_END;
+ }
+
+ coder->pos = 0;
+ coder->sequence = SEQ_EXTRA_ID;
+ }
+
+ break;
+
+ case SEQ_END:
+ // Everything is encoded. Let the compression code finish
+ // its work now.
+ return LZMA_STREAM_END;
+ }
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+metadata_encode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in lzma_attribute((unused)),
+ size_t *restrict in_pos lzma_attribute((unused)),
+ size_t in_size lzma_attribute((unused)), uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action lzma_attribute((unused)))
+{
+ while (!coder->end_was_reached) {
+ // Flush coder->buffer if it isn't empty.
+ if (coder->buffer_size > 0) {
+ const lzma_ret ret = coder->block_encoder.code(
+ coder->block_encoder.coder, allocator,
+ coder->buffer, &coder->buffer_pos,
+ coder->buffer_size,
+ out, out_pos, out_size, LZMA_RUN);
+ if (coder->buffer_pos < coder->buffer_size
+ || ret != LZMA_OK)
+ return ret;
+
+ coder->buffer_pos = 0;
+ coder->buffer_size = 0;
+ }
+
+ const lzma_ret ret = process(coder);
+
+ switch (ret) {
+ case LZMA_OK:
+ break;
+
+ case LZMA_STREAM_END:
+ coder->end_was_reached = true;
+ break;
+
+ default:
+ return ret;
+ }
+ }
+
+ // Finish
+ return coder->block_encoder.code(coder->block_encoder.coder, allocator,
+ coder->buffer, &coder->buffer_pos, coder->buffer_size,
+ out, out_pos, out_size, LZMA_FINISH);
+}
+
+
+static void
+metadata_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->block_encoder, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+metadata_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options, const lzma_metadata *metadata)
+{
+ if (options == NULL || metadata == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &metadata_encode;
+ next->end = &metadata_encoder_end;
+ next->coder->block_encoder = LZMA_NEXT_CODER_INIT;
+ }
+
+ next->coder->sequence = SEQ_FLAGS;
+ next->coder->pos = 0;
+ next->coder->metadata = *metadata;
+ next->coder->index_count = 0;
+ next->coder->index_current = metadata->index;
+ next->coder->end_was_reached = false;
+ next->coder->buffer_pos = 0;
+ next->coder->buffer_size = 0;
+
+ // Count and validate the Index Records.
+ {
+ const lzma_index *i = metadata->index;
+ while (i != NULL) {
+ if (i->total_size > LZMA_VLI_VALUE_MAX
+ || i->uncompressed_size
+ > LZMA_VLI_VALUE_MAX)
+ return LZMA_PROG_ERROR;
+
+ ++next->coder->index_count;
+ i = i->next;
+ }
+ }
+
+ // Initialize the Block encoder.
+ return lzma_block_encoder_init(
+ &next->coder->block_encoder, allocator, options);
+}
+
+
+extern lzma_ret
+lzma_metadata_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options, const lzma_metadata *metadata)
+{
+ lzma_next_coder_init(metadata_encoder_init, next, allocator,
+ options, metadata);
+}
+
+
+extern LZMA_API lzma_ret
+lzma_metadata_encoder(lzma_stream *strm, lzma_options_block *options,
+ const lzma_metadata *metadata)
+{
+ lzma_next_strm_init(strm, metadata_encoder_init, options, metadata);
+
+ strm->internal->supported_actions[LZMA_FINISH] = true;
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_vli
+lzma_metadata_size(const lzma_metadata *metadata)
+{
+ lzma_vli size = 1; // Metadata Flags
+
+ // Validate header_metadata_size, total_size, and uncompressed_size.
+ if (!lzma_vli_is_valid(metadata->header_metadata_size)
+ || !lzma_vli_is_valid(metadata->total_size)
+ || !lzma_vli_is_valid(metadata->uncompressed_size))
+ return 0;
+
+ // Add the sizes of these three fields.
+ if (metadata->header_metadata_size != LZMA_VLI_VALUE_UNKNOWN)
+ size += lzma_vli_size(metadata->header_metadata_size);
+
+ if (metadata->total_size != LZMA_VLI_VALUE_UNKNOWN)
+ size += lzma_vli_size(metadata->total_size);
+
+ if (metadata->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN)
+ size += lzma_vli_size(metadata->uncompressed_size);
+
+ // Index
+ if (metadata->index != NULL) {
+ const lzma_index *i = metadata->index;
+ size_t count = 1;
+
+ do {
+ const size_t x = lzma_vli_size(i->total_size);
+ const size_t y = lzma_vli_size(i->uncompressed_size);
+ if (x == 0 || y == 0)
+ return 0;
+
+ size += x + y;
+ ++count;
+ i = i->next;
+
+ } while (i != NULL);
+
+ const size_t tmp = lzma_vli_size(count);
+ if (tmp == 0)
+ return 0;
+
+ size += tmp;
+ }
+
+ // Extra
+ {
+ const lzma_extra *e = metadata->extra;
+ while (e != NULL) {
+ // Validate the numbers.
+ if (e->id > LZMA_VLI_VALUE_MAX
+ || e->size >= (lzma_vli)(SIZE_MAX))
+ return 0;
+
+ // Add the sizes.
+ size += lzma_vli_size(e->id);
+ if (e->id != 0) {
+ size += lzma_vli_size(e->size);
+ size += e->size;
+ }
+
+ e = e->next;
+ }
+ }
+
+ return size;
+}
diff --git a/src/liblzma/common/metadata_encoder.h b/src/liblzma/common/metadata_encoder.h
new file mode 100644
index 0000000..20357fe
--- /dev/null
+++ b/src/liblzma/common/metadata_encoder.h
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file metadata_encoder.h
+/// \brief Encodes metadata to be stored into Metadata Blocks
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_METADATA_ENCODER_H
+#define LZMA_METADATA_ENCODER_H
+
+#include "common.h"
+
+
+extern lzma_ret lzma_metadata_encoder_init(
+ lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_options_block *options, const lzma_metadata *metadata);
+
+#endif
diff --git a/src/liblzma/common/next_coder.c b/src/liblzma/common/next_coder.c
new file mode 100644
index 0000000..c10fe24
--- /dev/null
+++ b/src/liblzma/common/next_coder.c
@@ -0,0 +1,65 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file next_coder.c
+/// \brief Initializing and freeing the next coder in the chain
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+extern lzma_ret
+lzma_next_filter_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ lzma_ret ret = LZMA_OK;
+
+ // Free the existing coder if it is different than the current one.
+ if ((uintptr_t)(filters[0].init) != next->init)
+ lzma_next_coder_end(next, allocator);
+
+ if (filters[0].init != NULL) {
+ // Initialize the new coder.
+ ret = filters[0].init(next, allocator, filters);
+
+ // Set the init function pointer if initialization was
+ // successful. next->code and next->end are set by the
+ // initialization function itself.
+ if (ret == LZMA_OK) {
+ next->init = (uintptr_t)(filters[0].init);
+ assert(next->code != NULL);
+ assert(next->end != NULL);
+ } else {
+ lzma_next_coder_end(next, allocator);
+ }
+ }
+
+ return ret;
+}
+
+
+extern void
+lzma_next_coder_end(lzma_next_coder *next, lzma_allocator *allocator)
+{
+ if (next != NULL) {
+ if (next->end != NULL)
+ next->end(next->coder, allocator);
+
+ // Reset the variables so the we don't accidentally think
+ // that it is an already initialized coder.
+ *next = LZMA_NEXT_CODER_INIT;
+ }
+
+ return;
+}
diff --git a/src/liblzma/common/raw_common.c b/src/liblzma/common/raw_common.c
new file mode 100644
index 0000000..394903b
--- /dev/null
+++ b/src/liblzma/common/raw_common.c
@@ -0,0 +1,175 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file raw_common.c
+/// \brief Stuff shared between raw encoder and raw decoder
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "raw_common.h"
+
+
+/// \brief Prepares the filter chain
+///
+/// Prepares the filter chain by setting uncompressed sizes for each filter,
+/// and adding implicit Subblock filter when needed.
+///
+/// \return true if error occurred, false on success.
+///
+static bool
+prepare(lzma_vli *id, lzma_vli *uncompressed_size, bool implicit)
+{
+ bool needs_end_of_input = false;
+
+ switch (id[0]) {
+ case LZMA_FILTER_COPY:
+ case LZMA_FILTER_X86:
+ case LZMA_FILTER_POWERPC:
+ case LZMA_FILTER_IA64:
+ case LZMA_FILTER_ARM:
+ case LZMA_FILTER_ARMTHUMB:
+ case LZMA_FILTER_SPARC:
+ case LZMA_FILTER_DELTA:
+ uncompressed_size[1] = uncompressed_size[0];
+ needs_end_of_input = true;
+ break;
+
+ case LZMA_FILTER_SUBBLOCK:
+ case LZMA_FILTER_LZMA:
+ // These change the size of the data unpredictably.
+ uncompressed_size[1] = LZMA_VLI_VALUE_UNKNOWN;
+ break;
+
+ case LZMA_FILTER_SUBBLOCK_HELPER:
+ uncompressed_size[1] = uncompressed_size[0];
+ break;
+
+ default:
+ // Unknown filter.
+ return true;
+ }
+
+ // Is this the last filter in the chain?
+ if (id[1] == LZMA_VLI_VALUE_UNKNOWN) {
+ if (!needs_end_of_input || !implicit || uncompressed_size[0]
+ != LZMA_VLI_VALUE_UNKNOWN)
+ return false;
+
+ // Add implicit Subblock filter.
+ id[1] = LZMA_FILTER_SUBBLOCK;
+ uncompressed_size[1] = LZMA_VLI_VALUE_UNKNOWN;
+ id[2] = LZMA_VLI_VALUE_UNKNOWN;
+ }
+
+ return prepare(id + 1, uncompressed_size + 1, implicit);
+}
+
+
+extern lzma_ret
+lzma_raw_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_options_filter *options, lzma_vli uncompressed_size,
+ lzma_init_function (*get_function)(lzma_vli id),
+ bool allow_implicit, bool is_encoder)
+{
+ if (options == NULL || !lzma_vli_is_valid(uncompressed_size))
+ return LZMA_PROG_ERROR;
+
+ // Count the number of filters in the chain.
+ size_t count = 0;
+ while (options[count].id != LZMA_VLI_VALUE_UNKNOWN)
+ ++count;
+
+ // Allocate enough space from the stack for IDs and uncompressed
+ // sizes. We need two extra: possible implicit Subblock and end
+ // of array indicator.
+ lzma_vli ids[count + 2];
+ lzma_vli uncompressed_sizes[count + 2];
+ bool using_implicit = false;
+
+ uncompressed_sizes[0] = uncompressed_size;
+
+ if (count == 0) {
+ if (!allow_implicit)
+ return LZMA_PROG_ERROR;
+
+ count = 1;
+ using_implicit = true;
+
+ // Special case: no filters were specified, so an implicit
+ // Copy or Subblock filter is used.
+ if (uncompressed_size == LZMA_VLI_VALUE_UNKNOWN)
+ ids[0] = LZMA_FILTER_SUBBLOCK;
+ else
+ ids[0] = LZMA_FILTER_COPY;
+
+ ids[1] = LZMA_VLI_VALUE_UNKNOWN;
+
+ } else {
+ // Prepare the ids[] and uncompressed_sizes[].
+ for (size_t i = 0; i < count; ++i)
+ ids[i] = options[i].id;
+
+ ids[count] = LZMA_VLI_VALUE_UNKNOWN;
+
+ if (prepare(ids, uncompressed_sizes, allow_implicit))
+ return LZMA_HEADER_ERROR;
+
+ // Check if implicit Subblock filter was added.
+ if (ids[count] != LZMA_VLI_VALUE_UNKNOWN) {
+ assert(ids[count] == LZMA_FILTER_SUBBLOCK);
+ ++count;
+ using_implicit = true;
+ }
+ }
+
+ // Set the filter functions, and copy uncompressed sizes and options.
+ lzma_filter_info filters[count + 1];
+ if (is_encoder) {
+ for (size_t i = 0; i < count; ++i) {
+ // The order of the filters is reversed in the
+ // encoder. It allows more efficient handling
+ // of the uncompressed data.
+ const size_t j = count - i - 1;
+
+ filters[j].init = get_function(ids[i]);
+ if (filters[j].init == NULL)
+ return LZMA_HEADER_ERROR;
+
+ filters[j].options = options[i].options;
+ filters[j].uncompressed_size = uncompressed_sizes[i];
+ }
+
+ if (using_implicit)
+ filters[0].options = NULL;
+
+ } else {
+ for (size_t i = 0; i < count; ++i) {
+ filters[i].init = get_function(ids[i]);
+ if (filters[i].init == NULL)
+ return LZMA_HEADER_ERROR;
+
+ filters[i].options = options[i].options;
+ filters[i].uncompressed_size = uncompressed_sizes[i];
+ }
+
+ if (using_implicit)
+ filters[count - 1].options = NULL;
+ }
+
+ // Terminate the array.
+ filters[count].init = NULL;
+
+ // Initialize the filters.
+ return lzma_next_filter_init(next, allocator, filters);
+}
diff --git a/src/liblzma/common/raw_common.h b/src/liblzma/common/raw_common.h
new file mode 100644
index 0000000..172223c
--- /dev/null
+++ b/src/liblzma/common/raw_common.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file raw_common.h
+/// \brief Stuff shared between raw encoder and raw decoder
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_RAW_COMMON_H
+#define LZMA_RAW_COMMON_H
+
+#include "common.h"
+
+extern lzma_ret lzma_raw_coder_init(lzma_next_coder *next,
+ lzma_allocator *allocator,
+ const lzma_options_filter *options, lzma_vli uncompressed_size,
+ lzma_init_function (*get_function)(lzma_vli id),
+ bool allow_implicit, bool is_encoder);
+
+#endif
diff --git a/src/liblzma/common/raw_decoder.c b/src/liblzma/common/raw_decoder.c
new file mode 100644
index 0000000..a11cb5c
--- /dev/null
+++ b/src/liblzma/common/raw_decoder.c
@@ -0,0 +1,127 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file raw_decoder.c
+/// \brief Raw decoder initialization API
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "raw_decoder.h"
+#include "copy_coder.h"
+#include "simple_coder.h"
+#include "subblock_decoder.h"
+#include "subblock_decoder_helper.h"
+#include "delta_coder.h"
+#include "lzma_decoder.h"
+#include "metadata_decoder.h"
+
+
+static lzma_init_function
+get_function(lzma_vli id)
+{
+ switch (id) {
+#ifdef HAVE_FILTER_COPY
+ case LZMA_FILTER_COPY:
+ return &lzma_copy_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_SUBBLOCK
+ case LZMA_FILTER_SUBBLOCK:
+ return &lzma_subblock_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_X86
+ case LZMA_FILTER_X86:
+ return &lzma_simple_x86_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_POWERPC
+ case LZMA_FILTER_POWERPC:
+ return &lzma_simple_powerpc_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_IA64
+ case LZMA_FILTER_IA64:
+ return &lzma_simple_ia64_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_ARM
+ case LZMA_FILTER_ARM:
+ return &lzma_simple_arm_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_ARMTHUMB
+ case LZMA_FILTER_ARMTHUMB:
+ return &lzma_simple_armthumb_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_SPARC
+ case LZMA_FILTER_SPARC:
+ return &lzma_simple_sparc_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_DELTA
+ case LZMA_FILTER_DELTA:
+ return &lzma_delta_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_LZMA
+ case LZMA_FILTER_LZMA:
+ return &lzma_lzma_decoder_init;
+#endif
+
+#ifdef HAVE_FILTER_SUBBLOCK
+ case LZMA_FILTER_SUBBLOCK_HELPER:
+ return &lzma_subblock_decoder_helper_init;
+#endif
+ }
+
+ return NULL;
+}
+
+
+extern lzma_ret
+lzma_raw_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_options_filter *options,
+ lzma_vli uncompressed_size, bool allow_implicit)
+{
+ const lzma_ret ret = lzma_raw_coder_init(next, allocator,
+ options, uncompressed_size, &get_function,
+ allow_implicit, false);
+
+ if (ret != LZMA_OK)
+ lzma_next_coder_end(next, allocator);
+
+ return ret;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_raw_decoder(lzma_stream *strm, const lzma_options_filter *options,
+ lzma_vli uncompressed_size, lzma_bool allow_implicit)
+{
+ return_if_error(lzma_strm_init(strm));
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+
+ const lzma_ret ret = lzma_raw_coder_init(&strm->internal->next,
+ strm->allocator, options, uncompressed_size,
+ &get_function, allow_implicit, false);
+
+ if (ret != LZMA_OK)
+ lzma_end(strm);
+
+ return ret;
+}
diff --git a/src/liblzma/common/raw_decoder.h b/src/liblzma/common/raw_decoder.h
new file mode 100644
index 0000000..9d48074
--- /dev/null
+++ b/src/liblzma/common/raw_decoder.h
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file raw_decoder.h
+/// \brief Raw decoder initialization API
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_RAW_DECODER_H
+#define LZMA_RAW_DECODER_H
+
+#include "raw_common.h"
+
+
+extern lzma_ret lzma_raw_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_options_filter *options,
+ lzma_vli uncompressed_size, bool implicit);
+
+#endif
diff --git a/src/liblzma/common/raw_encoder.c b/src/liblzma/common/raw_encoder.c
new file mode 100644
index 0000000..c2cd0a5
--- /dev/null
+++ b/src/liblzma/common/raw_encoder.c
@@ -0,0 +1,124 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file raw_encoder.c
+/// \brief Raw encoder initialization API
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "raw_encoder.h"
+#include "copy_coder.h"
+#include "simple_coder.h"
+#include "subblock_encoder.h"
+#include "delta_coder.h"
+#include "lzma_encoder.h"
+
+
+static lzma_init_function
+get_function(lzma_vli id)
+{
+ switch (id) {
+#ifdef HAVE_FILTER_COPY
+ case LZMA_FILTER_COPY:
+ return &lzma_copy_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_SUBBLOCK
+ case LZMA_FILTER_SUBBLOCK:
+ return &lzma_subblock_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_X86
+ case LZMA_FILTER_X86:
+ return &lzma_simple_x86_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_POWERPC
+ case LZMA_FILTER_POWERPC:
+ return &lzma_simple_powerpc_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_IA64
+ case LZMA_FILTER_IA64:
+ return &lzma_simple_ia64_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_ARM
+ case LZMA_FILTER_ARM:
+ return &lzma_simple_arm_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_ARMTHUMB
+ case LZMA_FILTER_ARMTHUMB:
+ return &lzma_simple_armthumb_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_SPARC
+ case LZMA_FILTER_SPARC:
+ return &lzma_simple_sparc_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_DELTA
+ case LZMA_FILTER_DELTA:
+ return &lzma_delta_encoder_init;
+#endif
+
+#ifdef HAVE_FILTER_LZMA
+ case LZMA_FILTER_LZMA:
+ return &lzma_lzma_encoder_init;
+#endif
+ }
+
+ return NULL;
+}
+
+
+extern lzma_ret
+lzma_raw_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_options_filter *options,
+ lzma_vli uncompressed_size, bool allow_implicit)
+{
+ // lzma_raw_coder_init() accesses get_function() via function pointer,
+ // because this way linker doesn't statically link both encoder and
+ // decoder functions if user needs only encoder or decoder.
+ const lzma_ret ret = lzma_raw_coder_init(next, allocator,
+ options, uncompressed_size, &get_function,
+ allow_implicit, true);
+
+ if (ret != LZMA_OK)
+ lzma_next_coder_end(next, allocator);
+
+ return ret;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_raw_encoder(lzma_stream *strm, const lzma_options_filter *options,
+ lzma_vli uncompressed_size, lzma_bool allow_implicit)
+{
+ return_if_error(lzma_strm_init(strm));
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+ strm->internal->supported_actions[LZMA_FINISH] = true;
+
+ const lzma_ret ret = lzma_raw_coder_init(&strm->internal->next,
+ strm->allocator, options, uncompressed_size,
+ &get_function, allow_implicit, true);
+
+ if (ret != LZMA_OK)
+ lzma_end(strm);
+
+ return ret;
+}
diff --git a/src/liblzma/common/raw_encoder.h b/src/liblzma/common/raw_encoder.h
new file mode 100644
index 0000000..b0aab61
--- /dev/null
+++ b/src/liblzma/common/raw_encoder.h
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file raw_encoder.h
+/// \brief Raw encoder initialization API
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_RAW_ENCODER_H
+#define LZMA_RAW_ENCODER_H
+
+#include "raw_common.h"
+
+
+extern lzma_ret lzma_raw_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_options_filter *options,
+ lzma_vli uncompressed_size, bool allow_implicit);
+
+#endif
diff --git a/src/liblzma/common/stream_common.c b/src/liblzma/common/stream_common.c
new file mode 100644
index 0000000..121a667
--- /dev/null
+++ b/src/liblzma/common/stream_common.c
@@ -0,0 +1,23 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_common.c
+/// \brief Common stuff for Stream coders
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "stream_common.h"
+
+const uint8_t lzma_header_magic[6] = { 0xFF, 0x4C, 0x5A, 0x4D, 0x41, 0x00 };
+const uint8_t lzma_footer_magic[2] = { 0x59, 0x5A };
diff --git a/src/liblzma/common/stream_common.h b/src/liblzma/common/stream_common.h
new file mode 100644
index 0000000..b2f37f3
--- /dev/null
+++ b/src/liblzma/common/stream_common.h
@@ -0,0 +1,28 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_common.h
+/// \brief Common stuff for Stream coders
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_STREAM_COMMON_H
+#define LZMA_STREAM_COMMON_H
+
+#include "common.h"
+
+extern const uint8_t lzma_header_magic[6];
+extern const uint8_t lzma_footer_magic[2];
+
+#endif
diff --git a/src/liblzma/common/stream_decoder.c b/src/liblzma/common/stream_decoder.c
new file mode 100644
index 0000000..d8000c3
--- /dev/null
+++ b/src/liblzma/common/stream_decoder.c
@@ -0,0 +1,454 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_decoder.c
+/// \brief Decodes .lzma Streams
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "stream_common.h"
+#include "check.h"
+#include "stream_flags_decoder.h"
+#include "block_decoder.h"
+#include "metadata_decoder.h"
+
+
+struct lzma_coder_s {
+ enum {
+ SEQ_STREAM_HEADER_CODE,
+ SEQ_BLOCK_HEADER_INIT,
+ SEQ_BLOCK_HEADER_CODE,
+ SEQ_METADATA_CODE,
+ SEQ_DATA_CODE,
+ SEQ_STREAM_TAIL_INIT,
+ SEQ_STREAM_TAIL_CODE,
+ } sequence;
+
+ /// Position in variable-length integers and in some other things.
+ size_t pos;
+
+ /// Block or Metadata decoder. This takes little memory and the same
+ /// data structure can be used to decode every Block Header, so it's
+ /// a good idea to have a separate lzma_next_coder structure for it.
+ lzma_next_coder block_decoder;
+
+ /// Block Header decoder; this is separate
+ lzma_next_coder block_header_decoder;
+
+ lzma_options_block block_options;
+
+ /// Information about the sizes of the Blocks
+ lzma_info *info;
+
+ /// Current Block in *info
+ lzma_info_iter iter;
+
+ /// Number of bytes not yet processed from Data Blocks in the Stream.
+ /// This can be LZMA_VLI_VALUE_UNKNOWN. If it is known, it is
+ /// decremented while decoding and verified to match the reality.
+ lzma_vli total_left;
+
+ /// Like uncompressed_left above but for uncompressed data from
+ /// Data Blocks.
+ lzma_vli uncompressed_left;
+
+ /// Stream Flags from Stream Header
+ lzma_stream_flags header_flags;
+
+ /// Stream Flags from Stream tail
+ lzma_stream_flags tail_flags;
+
+ /// Decoder for Stream Header and Stream tail. This takes very
+ /// little memory and the same data structure can be used for
+ /// both Header and tail, so it's a good idea to have a separate
+ /// lzma_next_coder structure for it.
+ lzma_next_coder flags_decoder;
+
+ /// Temporary destination for the decoded Metadata.
+ lzma_metadata metadata;
+
+ /// Pointer to application-supplied pointer where to store the list
+ /// of Extra Records from the Header Metadata Block.
+ lzma_extra **header_extra;
+
+ /// Same as above but Footer Metadata Block
+ lzma_extra **footer_extra;
+};
+
+
+static lzma_ret
+metadata_init(lzma_coder *coder, lzma_allocator *allocator)
+{
+ assert(coder->metadata.index == NULL);
+ assert(coder->metadata.extra == NULL);
+
+ // Single-Block Streams don't have Metadata Blocks.
+ if (!coder->header_flags.is_multi)
+ return LZMA_DATA_ERROR;
+
+ coder->block_options.total_limit = LZMA_VLI_VALUE_UNKNOWN;
+
+ // Limit the Uncompressed Size of a Metadata Block. This is to
+ // prevent security issues where input file would have very huge
+ // Metadata.
+ //
+ // FIXME: Hardcoded constant is ugly. Maybe we should provide
+ // some way to specify this from the application.
+ coder->block_options.uncompressed_limit = LZMA_VLI_C(1) << 23;
+
+ lzma_info_size size_type;
+ bool want_extra;
+
+ // If we haven't decoded any Data Blocks yet, this is Header
+ // Metadata Block.
+ if (lzma_info_index_count_get(coder->info) == 0) {
+ coder->block_options.has_backward_size = false;
+ coder->block_options.handle_padding = true;
+ size_type = LZMA_INFO_HEADER_METADATA;
+ want_extra = coder->header_extra != NULL;
+ } else {
+ if (lzma_info_index_finish(coder->info))
+ return LZMA_DATA_ERROR;
+
+ coder->block_options.has_backward_size = true;
+ coder->block_options.handle_padding = false;
+ size_type = LZMA_INFO_FOOTER_METADATA;
+ want_extra = coder->footer_extra != NULL;
+ }
+
+ coder->block_options.has_uncompressed_size_in_footer = false;
+ coder->block_options.total_size = lzma_info_size_get(
+ coder->info, size_type);
+
+ coder->sequence = SEQ_METADATA_CODE;
+
+ return lzma_metadata_decoder_init(&coder->block_decoder, allocator,
+ &coder->block_options, &coder->metadata, want_extra);
+}
+
+
+static lzma_ret
+data_init(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_ret ret = lzma_info_iter_next(&coder->iter, allocator);
+ if (ret != LZMA_OK)
+ return ret;
+
+ ret = lzma_info_iter_set(&coder->iter, LZMA_VLI_VALUE_UNKNOWN,
+ coder->block_options.uncompressed_size);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->block_options.total_size = coder->iter.total_size;
+ coder->block_options.uncompressed_size = coder->iter.uncompressed_size;
+ coder->block_options.total_limit = coder->total_left;
+ coder->block_options.uncompressed_limit = coder->uncompressed_left;
+
+ if (coder->header_flags.is_multi) {
+ coder->block_options.has_uncompressed_size_in_footer = false;
+ coder->block_options.has_backward_size = false;
+ coder->block_options.handle_padding = true;
+ } else {
+ coder->block_options.has_uncompressed_size_in_footer
+ = coder->iter.uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN;
+ coder->block_options.has_backward_size = true;
+ coder->block_options.handle_padding = false;
+ }
+
+ coder->sequence = SEQ_DATA_CODE;
+
+ return lzma_block_decoder_init(&coder->block_decoder, allocator,
+ &coder->block_options);
+}
+
+
+static lzma_ret
+stream_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ while (*out_pos < out_size && (*in_pos < in_size
+ || coder->sequence == SEQ_DATA_CODE))
+ switch (coder->sequence) {
+ case SEQ_STREAM_HEADER_CODE: {
+ const lzma_ret ret = coder->flags_decoder.code(
+ coder->flags_decoder.coder,
+ allocator, in, in_pos, in_size,
+ NULL, NULL, 0, LZMA_RUN);
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ coder->sequence = SEQ_BLOCK_HEADER_INIT;
+
+ // Detect if the Check type is supported and give appropriate
+ // warning if it isn't. We don't warn every time a new Block
+ // is started.
+ lzma_check tmp;
+ if (lzma_check_init(&tmp, coder->header_flags.check))
+ return LZMA_UNSUPPORTED_CHECK;
+
+ break;
+ }
+
+ case SEQ_BLOCK_HEADER_INIT: {
+ coder->block_options.check = coder->header_flags.check;
+ coder->block_options.has_crc32 = coder->header_flags.has_crc32;
+
+ const lzma_ret ret = lzma_block_header_decoder_init(
+ &coder->block_header_decoder, allocator,
+ &coder->block_options);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_BLOCK_HEADER_CODE;
+ }
+
+ // Fall through
+
+ case SEQ_BLOCK_HEADER_CODE: {
+ lzma_ret ret = coder->block_header_decoder.code(
+ coder->block_header_decoder.coder,
+ allocator, in, in_pos, in_size,
+ NULL, NULL, 0, LZMA_RUN);
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ if (coder->block_options.is_metadata)
+ ret = metadata_init(coder, allocator);
+ else
+ ret = data_init(coder, allocator);
+
+ if (ret != LZMA_OK)
+ return ret;
+
+ break;
+ }
+
+ case SEQ_METADATA_CODE: {
+ lzma_ret ret = coder->block_decoder.code(
+ coder->block_decoder.coder, allocator,
+ in, in_pos, in_size, NULL, NULL, 0, LZMA_RUN);
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ const bool is_header_metadata = lzma_info_index_count_get(
+ coder->info) == 0;
+
+ if (is_header_metadata) {
+ if (coder->header_extra != NULL) {
+ *coder->header_extra = coder->metadata.extra;
+ coder->metadata.extra = NULL;
+ }
+
+ if (lzma_info_size_set(coder->info,
+ LZMA_INFO_HEADER_METADATA,
+ coder->block_options.total_size)
+ != LZMA_OK)
+ return LZMA_PROG_ERROR;
+
+ coder->sequence = SEQ_BLOCK_HEADER_INIT;
+ } else {
+ if (coder->footer_extra != NULL) {
+ *coder->footer_extra = coder->metadata.extra;
+ coder->metadata.extra = NULL;
+ }
+
+ coder->sequence = SEQ_STREAM_TAIL_INIT;
+ }
+
+ assert(coder->metadata.extra == NULL);
+
+ ret = lzma_info_metadata_set(coder->info, allocator,
+ &coder->metadata, is_header_metadata, true);
+ if (ret != LZMA_OK)
+ return ret;
+
+ // Intialize coder->total_size and coder->uncompressed_size
+ // from Header Metadata.
+ if (is_header_metadata) {
+ coder->total_left = lzma_info_size_get(
+ coder->info, LZMA_INFO_TOTAL);
+ coder->uncompressed_left = lzma_info_size_get(
+ coder->info, LZMA_INFO_UNCOMPRESSED);
+ }
+
+ break;
+ }
+
+ case SEQ_DATA_CODE: {
+ lzma_ret ret = coder->block_decoder.code(
+ coder->block_decoder.coder, allocator,
+ in, in_pos, in_size, out, out_pos, out_size,
+ action);
+
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ ret = lzma_info_iter_set(&coder->iter,
+ coder->block_options.total_size,
+ coder->block_options.uncompressed_size);
+ if (ret != LZMA_OK)
+ return ret;
+
+ // These won't overflow since lzma_info_iter_set() succeeded.
+ if (coder->total_left != LZMA_VLI_VALUE_UNKNOWN)
+ coder->total_left -= coder->block_options.total_size;
+ if (coder->uncompressed_left != LZMA_VLI_VALUE_UNKNOWN)
+ coder->uncompressed_left -= coder->block_options
+ .uncompressed_size;
+
+ if (!coder->header_flags.is_multi) {
+ ret = lzma_info_index_finish(coder->info);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_STREAM_TAIL_INIT;
+ break;
+ }
+
+ coder->sequence = SEQ_BLOCK_HEADER_INIT;
+ break;
+ }
+
+ case SEQ_STREAM_TAIL_INIT: {
+ lzma_ret ret = lzma_info_index_finish(coder->info);
+ if (ret != LZMA_OK)
+ return ret;
+
+ ret = lzma_stream_tail_decoder_init(&coder->flags_decoder,
+ allocator, &coder->tail_flags);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_STREAM_TAIL_CODE;
+ }
+
+ // Fall through
+
+ case SEQ_STREAM_TAIL_CODE: {
+ const lzma_ret ret = coder->flags_decoder.code(
+ coder->flags_decoder.coder, allocator,
+ in, in_pos, in_size, NULL, NULL, 0, LZMA_RUN);
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ if (!lzma_stream_flags_is_equal(
+ coder->header_flags, coder->tail_flags))
+ return LZMA_DATA_ERROR;
+
+ return LZMA_STREAM_END;
+ }
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+stream_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->block_decoder, allocator);
+ lzma_next_coder_end(&coder->block_header_decoder, allocator);
+ lzma_next_coder_end(&coder->flags_decoder, allocator);
+ lzma_info_free(coder->info, allocator);
+ lzma_index_free(coder->metadata.index, allocator);
+ lzma_extra_free(coder->metadata.extra, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+stream_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_extra **header, lzma_extra **footer)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &stream_decode;
+ next->end = &stream_decoder_end;
+
+ next->coder->block_decoder = LZMA_NEXT_CODER_INIT;
+ next->coder->block_header_decoder = LZMA_NEXT_CODER_INIT;
+ next->coder->info = NULL;
+ next->coder->flags_decoder = LZMA_NEXT_CODER_INIT;
+ next->coder->metadata.index = NULL;
+ next->coder->metadata.extra = NULL;
+ } else {
+ lzma_index_free(next->coder->metadata.index, allocator);
+ next->coder->metadata.index = NULL;
+
+ lzma_extra_free(next->coder->metadata.extra, allocator);
+ next->coder->metadata.extra = NULL;
+ }
+
+ next->coder->info = lzma_info_init(next->coder->info, allocator);
+ if (next->coder->info == NULL)
+ return LZMA_MEM_ERROR;
+
+ lzma_info_iter_begin(next->coder->info, &next->coder->iter);
+
+ // Initialize Stream Header decoder.
+ return_if_error(lzma_stream_header_decoder_init(
+ &next->coder->flags_decoder, allocator,
+ &next->coder->header_flags));
+
+ // Reset the *foo_extra pointers to NULL. This way the caller knows
+ // if there were no Extra Records. (We don't support appending
+ // Records to Extra list.)
+ if (header != NULL)
+ *header = NULL;
+ if (footer != NULL)
+ *footer = NULL;
+
+ // Reset some variables.
+ next->coder->sequence = SEQ_STREAM_HEADER_CODE;
+ next->coder->pos = 0;
+ next->coder->uncompressed_left = LZMA_VLI_VALUE_UNKNOWN;
+ next->coder->total_left = LZMA_VLI_VALUE_UNKNOWN;
+ next->coder->header_extra = header;
+ next->coder->footer_extra = footer;
+
+ return LZMA_OK;
+}
+
+
+extern lzma_ret
+lzma_stream_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ lzma_extra **header, lzma_extra **footer)
+{
+ lzma_next_coder_init(
+ stream_decoder_init, next, allocator, header, footer);
+}
+
+
+extern LZMA_API lzma_ret
+lzma_stream_decoder(lzma_stream *strm,
+ lzma_extra **header, lzma_extra **footer)
+{
+ lzma_next_strm_init(strm, stream_decoder_init, header, footer);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/stream_encoder_multi.c b/src/liblzma/common/stream_encoder_multi.c
new file mode 100644
index 0000000..5955f85
--- /dev/null
+++ b/src/liblzma/common/stream_encoder_multi.c
@@ -0,0 +1,460 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_encoder_multi.c
+/// \brief Encodes Multi-Block .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "stream_common.h"
+#include "block_encoder.h"
+#include "metadata_encoder.h"
+
+
+struct lzma_coder_s {
+ enum {
+ SEQ_STREAM_HEADER_COPY,
+ SEQ_HEADER_METADATA_INIT,
+ SEQ_HEADER_METADATA_COPY,
+ SEQ_HEADER_METADATA_CODE,
+ SEQ_DATA_INIT,
+ SEQ_DATA_COPY,
+ SEQ_DATA_CODE,
+ SEQ_FOOTER_METADATA_INIT,
+ SEQ_FOOTER_METADATA_COPY,
+ SEQ_FOOTER_METADATA_CODE,
+ SEQ_STREAM_FOOTER_INIT,
+ SEQ_STREAM_FOOTER_COPY,
+ } sequence;
+
+ /// Block or Metadata encoder
+ lzma_next_coder next;
+
+ /// Options for the Block encoder
+ lzma_options_block block_options;
+
+ /// Information about the Stream
+ lzma_info *info;
+
+ /// Information about the current Data Block
+ lzma_info_iter iter;
+
+ /// Pointer to user-supplied options structure. We don't write to
+ /// it, only read instructions from the application, thus this is
+ /// const even though the user-supplied pointer from
+ /// lzma_options_filter structure isn't.
+ const lzma_options_stream *stream_options;
+
+ /// Stream Header or Stream Footer in encoded form
+ uint8_t *header;
+ size_t header_pos;
+ size_t header_size;
+};
+
+
+typedef enum {
+ BLOCK_HEADER_METADATA,
+ BLOCK_DATA,
+ BLOCK_FOOTER_METADATA,
+} block_type;
+
+
+static lzma_ret
+block_header_encode(lzma_coder *coder, lzma_allocator *allocator,
+ lzma_vli uncompressed_size, block_type type)
+{
+ assert(coder->header == NULL);
+
+ coder->block_options = (lzma_options_block){
+ .check = coder->stream_options->check,
+ .has_crc32 = coder->stream_options->has_crc32,
+ .has_eopm = true,
+ .is_metadata = type != BLOCK_DATA,
+ .has_uncompressed_size_in_footer = false,
+ .has_backward_size = type == BLOCK_FOOTER_METADATA,
+ .handle_padding = false,
+ .total_size = LZMA_VLI_VALUE_UNKNOWN,
+ .compressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = uncompressed_size,
+ .compressed_reserve = 0,
+ .uncompressed_reserve = 0,
+ .total_limit = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_limit = LZMA_VLI_VALUE_UNKNOWN,
+ .padding = LZMA_BLOCK_HEADER_PADDING_AUTO,
+ };
+
+ if (type == BLOCK_DATA) {
+ memcpy(coder->block_options.filters,
+ coder->stream_options->filters,
+ sizeof(coder->stream_options->filters));
+ coder->block_options.alignment = coder->iter.stream_offset;
+ } else {
+ memcpy(coder->block_options.filters,
+ coder->stream_options->metadata_filters,
+ sizeof(coder->stream_options->filters));
+ coder->block_options.alignment
+ = lzma_info_metadata_alignment_get(
+ coder->info, type == BLOCK_HEADER_METADATA);
+ }
+
+ lzma_ret ret = lzma_block_header_size(&coder->block_options);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->header_size = coder->block_options.header_size;
+ coder->header = lzma_alloc(coder->header_size, allocator);
+ if (coder->header == NULL)
+ return LZMA_MEM_ERROR;
+
+ ret = lzma_block_header_encode(coder->header, &coder->block_options);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->header_pos = 0;
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+metadata_encoder_init(lzma_coder *coder, lzma_allocator *allocator,
+ lzma_metadata *metadata, block_type type)
+{
+ lzma_ret ret = lzma_info_metadata_set(coder->info, allocator,
+ metadata, type == BLOCK_HEADER_METADATA, false);
+ if (ret != LZMA_OK)
+ return ret;
+
+ const lzma_vli metadata_size = lzma_metadata_size(metadata);
+ if (metadata_size == 0)
+ return LZMA_PROG_ERROR;
+
+ ret = block_header_encode(coder, allocator, metadata_size, type);
+ if (ret != LZMA_OK)
+ return ret;
+
+ return lzma_metadata_encoder_init(&coder->next, allocator,
+ &coder->block_options, metadata);
+}
+
+
+static lzma_ret
+data_encoder_init(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_ret ret = lzma_info_iter_next(&coder->iter, allocator);
+ if (ret != LZMA_OK)
+ return ret;
+
+ ret = block_header_encode(coder, allocator,
+ LZMA_VLI_VALUE_UNKNOWN, BLOCK_DATA);
+ if (ret != LZMA_OK)
+ return ret;
+
+ return lzma_block_encoder_init(&coder->next, allocator,
+ &coder->block_options);
+}
+
+
+static lzma_ret
+stream_encode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ // Main loop
+ while (*out_pos < out_size)
+ switch (coder->sequence) {
+ case SEQ_STREAM_HEADER_COPY:
+ case SEQ_HEADER_METADATA_COPY:
+ case SEQ_DATA_COPY:
+ case SEQ_FOOTER_METADATA_COPY:
+ case SEQ_STREAM_FOOTER_COPY:
+ bufcpy(coder->header, &coder->header_pos, coder->header_size,
+ out, out_pos, out_size);
+ if (coder->header_pos < coder->header_size)
+ return LZMA_OK;
+
+ lzma_free(coder->header, allocator);
+ coder->header = NULL;
+
+ switch (coder->sequence) {
+ case SEQ_STREAM_HEADER_COPY:
+ // Write Header Metadata Block if we have Extra for it
+ // or known Uncompressed Size.
+ if (coder->stream_options->header != NULL
+ || coder->stream_options
+ ->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN) {
+ coder->sequence = SEQ_HEADER_METADATA_INIT;
+ } else {
+ // Mark that Header Metadata Block doesn't
+ // exist.
+ if (lzma_info_size_set(coder->info,
+ LZMA_INFO_HEADER_METADATA, 0)
+ != LZMA_OK)
+ return LZMA_PROG_ERROR;
+
+ coder->sequence = SEQ_DATA_INIT;
+ }
+ break;
+
+ case SEQ_HEADER_METADATA_COPY:
+ case SEQ_DATA_COPY:
+ case SEQ_FOOTER_METADATA_COPY:
+ ++coder->sequence;
+ break;
+
+ case SEQ_STREAM_FOOTER_COPY:
+ return LZMA_STREAM_END;
+
+ default:
+ assert(0);
+ }
+
+ break;
+
+ case SEQ_HEADER_METADATA_INIT: {
+ lzma_metadata metadata = {
+ .header_metadata_size = LZMA_VLI_VALUE_UNKNOWN,
+ .total_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = coder->stream_options
+ ->uncompressed_size,
+ .index = NULL,
+ .extra = coder->stream_options->header,
+ };
+
+ const lzma_ret ret = metadata_encoder_init(coder, allocator,
+ &metadata, BLOCK_HEADER_METADATA);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_HEADER_METADATA_COPY;
+ break;
+ }
+
+ case SEQ_FOOTER_METADATA_INIT: {
+ lzma_metadata metadata = {
+ .header_metadata_size
+ = lzma_info_size_get(coder->info,
+ LZMA_INFO_HEADER_METADATA),
+ .total_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .index = lzma_info_index_get(coder->info, false),
+ .extra = coder->stream_options->footer,
+ };
+
+ const lzma_ret ret = metadata_encoder_init(coder, allocator,
+ &metadata, BLOCK_FOOTER_METADATA);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_FOOTER_METADATA_COPY;
+ break;
+ }
+
+ case SEQ_HEADER_METADATA_CODE:
+ case SEQ_FOOTER_METADATA_CODE: {
+ size_t dummy = 0;
+ lzma_ret ret = coder->next.code(coder->next.coder,
+ allocator, NULL, &dummy, 0,
+ out, out_pos, out_size, LZMA_RUN);
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ ret = lzma_info_size_set(coder->info,
+ coder->sequence == SEQ_HEADER_METADATA_CODE
+ ? LZMA_INFO_HEADER_METADATA
+ : LZMA_INFO_FOOTER_METADATA,
+ coder->block_options.total_size);
+ if (ret != LZMA_OK)
+ return ret;
+
+ ++coder->sequence;
+ break;
+ }
+
+ case SEQ_DATA_INIT: {
+ // Don't create an empty Block unless it would be
+ // the only Data Block.
+ if (*in_pos == in_size) {
+ if (action != LZMA_FINISH)
+ return LZMA_OK;
+
+ if (lzma_info_index_count_get(coder->info) != 0) {
+ if (lzma_info_index_finish(coder->info))
+ return LZMA_DATA_ERROR;
+
+ coder->sequence = SEQ_FOOTER_METADATA_INIT;
+ break;
+ }
+ }
+
+ const lzma_ret ret = data_encoder_init(coder, allocator);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_DATA_COPY;
+ break;
+ }
+
+ case SEQ_DATA_CODE: {
+ static const lzma_action convert[4] = {
+ LZMA_RUN,
+ LZMA_SYNC_FLUSH,
+ LZMA_FINISH,
+ LZMA_FINISH,
+ };
+
+ lzma_ret ret = coder->next.code(coder->next.coder,
+ allocator, in, in_pos, in_size,
+ out, out_pos, out_size, convert[action]);
+ if (ret != LZMA_STREAM_END || action == LZMA_SYNC_FLUSH)
+ return ret;
+
+ ret = lzma_info_iter_set(&coder->iter,
+ coder->block_options.total_size,
+ coder->block_options.uncompressed_size);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_DATA_INIT;
+ break;
+ }
+
+ case SEQ_STREAM_FOOTER_INIT: {
+ assert(coder->header == NULL);
+
+ lzma_stream_flags flags = {
+ .check = coder->stream_options->check,
+ .has_crc32 = coder->stream_options->has_crc32,
+ .is_multi = true,
+ };
+
+ coder->header = lzma_alloc(LZMA_STREAM_TAIL_SIZE, allocator);
+ if (coder->header == NULL)
+ return LZMA_MEM_ERROR;
+
+ const lzma_ret ret = lzma_stream_tail_encode(
+ coder->header, &flags);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->header_size = LZMA_STREAM_TAIL_SIZE;
+ coder->header_pos = 0;
+
+ coder->sequence = SEQ_STREAM_FOOTER_COPY;
+ break;
+ }
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+stream_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_info_free(coder->info, allocator);
+ lzma_free(coder->header, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+stream_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_options_stream *options)
+{
+ if (options == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &stream_encode;
+ next->end = &stream_encoder_end;
+
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ next->coder->info = NULL;
+ } else {
+ lzma_free(next->coder->header, allocator);
+ }
+
+ next->coder->header = NULL;
+
+ next->coder->info = lzma_info_init(next->coder->info, allocator);
+ if (next->coder->info == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->coder->sequence = SEQ_STREAM_HEADER_COPY;
+ next->coder->stream_options = options;
+
+ // Encode Stream Flags
+ {
+ lzma_stream_flags flags = {
+ .check = options->check,
+ .has_crc32 = options->has_crc32,
+ .is_multi = true,
+ };
+
+ next->coder->header = lzma_alloc(LZMA_STREAM_HEADER_SIZE,
+ allocator);
+ if (next->coder->header == NULL)
+ return LZMA_MEM_ERROR;
+
+ return_if_error(lzma_stream_header_encode(
+ next->coder->header, &flags));
+
+ next->coder->header_pos = 0;
+ next->coder->header_size = LZMA_STREAM_HEADER_SIZE;
+ }
+
+ if (lzma_info_size_set(next->coder->info, LZMA_INFO_STREAM_START,
+ options->alignment) != LZMA_OK)
+ return LZMA_PROG_ERROR;
+
+ lzma_info_iter_begin(next->coder->info, &next->coder->iter);
+
+ return LZMA_OK;
+}
+
+
+/*
+extern lzma_ret
+lzma_stream_encoder_multi_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_options_stream *options)
+{
+ lzma_next_coder_init(stream_encoder_init, next, allocator, options);
+}
+*/
+
+
+extern LZMA_API lzma_ret
+lzma_stream_encoder_multi(
+ lzma_stream *strm, const lzma_options_stream *options)
+{
+ lzma_next_strm_init(strm, stream_encoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_SYNC_FLUSH] = true;
+ strm->internal->supported_actions[LZMA_FULL_FLUSH] = true;
+ strm->internal->supported_actions[LZMA_FINISH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/stream_encoder_single.c b/src/liblzma/common/stream_encoder_single.c
new file mode 100644
index 0000000..e8efd00
--- /dev/null
+++ b/src/liblzma/common/stream_encoder_single.c
@@ -0,0 +1,220 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_encoder_single.c
+/// \brief Encodes Single-Block .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "stream_common.h"
+#include "block_encoder.h"
+
+
+struct lzma_coder_s {
+ /// Uncompressed Size, Backward Size, and Footer Magic Bytes are
+ /// part of Block in the file format specification, but it is simpler
+ /// to implement them as part of Stream.
+ enum {
+ SEQ_HEADERS,
+ SEQ_DATA,
+ SEQ_FOOTER,
+ } sequence;
+
+ /// Block encoder
+ lzma_next_coder block_encoder;
+
+ /// Block encoder options
+ lzma_options_block block_options;
+
+ /// Stream Flags; we need to have these in this struct so that we
+ /// can encode Stream Footer.
+ lzma_stream_flags stream_flags;
+
+ /// Stream Header + Block Header, or Stream Footer
+ uint8_t *header;
+ size_t header_pos;
+ size_t header_size;
+};
+
+
+static lzma_ret
+stream_encode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out, size_t *out_pos,
+ size_t out_size, lzma_action action)
+{
+ // NOTE: We don't check if the amount of input is in the proper limits,
+ // because the Block encoder will do it for us.
+
+ while (*out_pos < out_size)
+ switch (coder->sequence) {
+ case SEQ_HEADERS:
+ bufcpy(coder->header, &coder->header_pos, coder->header_size,
+ out, out_pos, out_size);
+
+ if (coder->header_pos == coder->header_size) {
+ coder->header_pos = 0;
+ coder->sequence = SEQ_DATA;
+ }
+
+ break;
+
+ case SEQ_DATA: {
+ lzma_ret ret = coder->block_encoder.code(
+ coder->block_encoder.coder, allocator,
+ in, in_pos, in_size,
+ out, out_pos, out_size, action);
+ if (ret != LZMA_STREAM_END || action == LZMA_SYNC_FLUSH)
+ return ret;
+
+ assert(*in_pos == in_size);
+
+ assert(coder->header_size >= LZMA_STREAM_TAIL_SIZE);
+ coder->header_size = LZMA_STREAM_TAIL_SIZE;
+
+ ret = lzma_stream_tail_encode(
+ coder->header, &coder->stream_flags);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_FOOTER;
+ break;
+ }
+
+ case SEQ_FOOTER:
+ bufcpy(coder->header, &coder->header_pos, coder->header_size,
+ out, out_pos, out_size);
+
+ return coder->header_pos == coder->header_size
+ ? LZMA_STREAM_END : LZMA_OK;
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+stream_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->block_encoder, allocator);
+ lzma_free(coder->header, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static lzma_ret
+stream_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_options_stream *options)
+{
+ if (options == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &stream_encode;
+ next->end = &stream_encoder_end;
+ next->coder->block_encoder = LZMA_NEXT_CODER_INIT;
+ } else {
+ // Free the previous buffer, if any.
+ lzma_free(next->coder->header, allocator);
+ }
+
+ // At this point, next->coder->header points to nothing useful.
+ next->coder->header = NULL;
+
+ // Basic initializations
+ next->coder->sequence = SEQ_HEADERS;
+ next->coder->header_pos = 0;
+
+ // Initialize next->coder->stream_flags.
+ next->coder->stream_flags = (lzma_stream_flags){
+ .check = options->check,
+ .has_crc32 = options->has_crc32,
+ .is_multi = false,
+ };
+
+ // Initialize next->coder->block_options.
+ next->coder->block_options = (lzma_options_block){
+ .check = options->check,
+ .has_crc32 = options->has_crc32,
+ .has_eopm = options->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN,
+ .is_metadata = false,
+ .has_uncompressed_size_in_footer = options->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN,
+ .has_backward_size = true,
+ .handle_padding = false,
+ .compressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = options->uncompressed_size,
+ .compressed_reserve = 0,
+ .uncompressed_reserve = 0,
+ .total_size = LZMA_VLI_VALUE_UNKNOWN,
+ .total_limit = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_limit = LZMA_VLI_VALUE_UNKNOWN,
+ .padding = LZMA_BLOCK_HEADER_PADDING_AUTO,
+ .alignment = options->alignment + LZMA_STREAM_HEADER_SIZE,
+ };
+ memcpy(next->coder->block_options.filters, options->filters,
+ sizeof(options->filters));
+
+ return_if_error(lzma_block_header_size(&next->coder->block_options));
+
+ // Encode Stream Flags and Block Header into next->coder->header.
+ next->coder->header_size = (size_t)(LZMA_STREAM_HEADER_SIZE)
+ + next->coder->block_options.header_size;
+ next->coder->header = lzma_alloc(next->coder->header_size, allocator);
+ if (next->coder->header == NULL)
+ return LZMA_MEM_ERROR;
+
+ return_if_error(lzma_stream_header_encode(next->coder->header,
+ &next->coder->stream_flags));
+
+ return_if_error(lzma_block_header_encode(
+ next->coder->header + LZMA_STREAM_HEADER_SIZE,
+ &next->coder->block_options));
+
+ // Initialize the Block encoder.
+ return lzma_block_encoder_init(&next->coder->block_encoder, allocator,
+ &next->coder->block_options);
+}
+
+
+/*
+extern lzma_ret
+lzma_stream_encoder_single_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_options_stream *options)
+{
+ lzma_next_coder_init(stream_encoder_init, allocator, options);
+}
+*/
+
+
+extern LZMA_API lzma_ret
+lzma_stream_encoder_single(
+ lzma_stream *strm, const lzma_options_stream *options)
+{
+ lzma_next_strm_init(strm, stream_encoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+ strm->internal->supported_actions[LZMA_FINISH] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/stream_flags_decoder.c b/src/liblzma/common/stream_flags_decoder.c
new file mode 100644
index 0000000..d9c847a
--- /dev/null
+++ b/src/liblzma/common/stream_flags_decoder.c
@@ -0,0 +1,258 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_flags_decoder.c
+/// \brief Decodes Stream Header and tail from .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "stream_flags_decoder.h"
+#include "stream_common.h"
+
+
+////////////
+// Common //
+////////////
+
+struct lzma_coder_s {
+ enum {
+ SEQ_HEADER_MAGIC,
+ SEQ_HEADER_FLAGS,
+ SEQ_HEADER_CRC32,
+
+ SEQ_FOOTER_FLAGS,
+ SEQ_FOOTER_MAGIC,
+ } sequence;
+
+ size_t pos;
+ uint32_t crc32;
+
+ lzma_stream_flags *options;
+};
+
+
+static void
+stream_header_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+static bool
+stream_flags_decode(const uint8_t *in, lzma_stream_flags *options)
+{
+ // Reserved bits must be unset.
+ if (*in & 0xE0)
+ return true;
+
+ options->check = *in & 0x07;
+ options->has_crc32 = (*in & 0x08) != 0;
+ options->is_multi = (*in & 0x10) != 0;
+
+ return false;
+}
+
+
+////////////
+// Header //
+////////////
+
+static lzma_ret
+stream_header_decode(lzma_coder *coder,
+ lzma_allocator *allocator lzma_attribute((unused)),
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out lzma_attribute((unused)),
+ size_t *restrict out_pos lzma_attribute((unused)),
+ size_t out_size lzma_attribute((unused)),
+ lzma_action action lzma_attribute((unused)))
+{
+ while (*in_pos < in_size)
+ switch (coder->sequence) {
+ case SEQ_HEADER_MAGIC:
+ if (in[*in_pos] != lzma_header_magic[coder->pos])
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+
+ if (++coder->pos == sizeof(lzma_header_magic)) {
+ coder->pos = 0;
+ coder->sequence = SEQ_HEADER_FLAGS;
+ }
+
+ break;
+
+ case SEQ_HEADER_FLAGS:
+ if (stream_flags_decode(in + *in_pos, coder->options))
+ return LZMA_HEADER_ERROR;
+
+ coder->crc32 = lzma_crc32(in + *in_pos, 1, 0);
+
+ ++*in_pos;
+ coder->sequence = SEQ_HEADER_CRC32;
+ break;
+
+ case SEQ_HEADER_CRC32:
+ if (in[*in_pos] != ((coder->crc32 >> (coder->pos * 8)) & 0xFF))
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+
+ if (++coder->pos == 4)
+ return LZMA_STREAM_END;
+
+ break;
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+stream_header_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_stream_flags *options)
+{
+ if (options == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+ }
+
+ // Set the function pointers unconditionally, because they may
+ // have been pointing to footer decoder too.
+ next->code = &stream_header_decode;
+ next->end = &stream_header_decoder_end;
+
+ next->coder->sequence = SEQ_HEADER_MAGIC;
+ next->coder->pos = 0;
+ next->coder->crc32 = 0;
+ next->coder->options = options;
+
+ return LZMA_OK;
+}
+
+
+extern lzma_ret
+lzma_stream_header_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_stream_flags *options)
+{
+ lzma_next_coder_init(
+ stream_header_decoder_init, next, allocator, options);
+}
+
+
+extern LZMA_API lzma_ret
+lzma_stream_header_decoder(lzma_stream *strm, lzma_stream_flags *options)
+{
+ lzma_next_strm_init(strm, stream_header_decoder_init, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+
+ return LZMA_OK;
+}
+
+
+//////////
+// Tail //
+//////////
+
+static lzma_ret
+stream_tail_decode(lzma_coder *coder,
+ lzma_allocator *allocator lzma_attribute((unused)),
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out lzma_attribute((unused)),
+ size_t *restrict out_pos lzma_attribute((unused)),
+ size_t out_size lzma_attribute((unused)),
+ lzma_action action lzma_attribute((unused)))
+{
+ while (*in_pos < in_size)
+ switch (coder->sequence) {
+ case SEQ_FOOTER_FLAGS:
+ if (stream_flags_decode(in + *in_pos, coder->options))
+ return LZMA_HEADER_ERROR;
+
+ ++*in_pos;
+ coder->sequence = SEQ_FOOTER_MAGIC;
+ break;
+
+ case SEQ_FOOTER_MAGIC:
+ if (in[*in_pos] != lzma_footer_magic[coder->pos])
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+
+ if (++coder->pos == sizeof(lzma_footer_magic))
+ return LZMA_STREAM_END;
+
+ break;
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+stream_tail_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_stream_flags *options)
+{
+ if (options == NULL)
+ return LZMA_PROG_ERROR;
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+ }
+
+ // Set the function pointers unconditionally, because they may
+ // have been pointing to footer decoder too.
+ next->code = &stream_tail_decode;
+ next->end = &stream_header_decoder_end;
+
+ next->coder->sequence = SEQ_FOOTER_FLAGS;
+ next->coder->pos = 0;
+ next->coder->options = options;
+
+ return LZMA_OK;
+}
+
+
+extern lzma_ret
+lzma_stream_tail_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_stream_flags *options)
+{
+ lzma_next_coder_init2(next, allocator, stream_header_decoder_init,
+ stream_tail_decoder_init, allocator, options);
+}
+
+
+extern LZMA_API lzma_ret
+lzma_stream_tail_decoder(lzma_stream *strm, lzma_stream_flags *options)
+{
+ lzma_next_strm_init2(strm, stream_header_decoder_init,
+ stream_tail_decoder_init, strm->allocator, options);
+
+ strm->internal->supported_actions[LZMA_RUN] = true;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/stream_flags_decoder.h b/src/liblzma/common/stream_flags_decoder.h
new file mode 100644
index 0000000..e4b8e3c
--- /dev/null
+++ b/src/liblzma/common/stream_flags_decoder.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_flags_decoder.h
+/// \brief Decodes Stream Header and Footer from .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_STREAM_FLAGS_DECODER_H
+#define LZMA_STREAM_FLAGS_DECODER_H
+
+#include "common.h"
+
+extern lzma_ret lzma_stream_header_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_stream_flags *options);
+
+extern lzma_ret lzma_stream_tail_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, lzma_stream_flags *options);
+
+#endif
diff --git a/src/liblzma/common/stream_flags_encoder.c b/src/liblzma/common/stream_flags_encoder.c
new file mode 100644
index 0000000..5546858
--- /dev/null
+++ b/src/liblzma/common/stream_flags_encoder.c
@@ -0,0 +1,75 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file stream_flags_encoder.c
+/// \brief Encodes Stream Header and Footer for .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "stream_common.h"
+
+
+static bool
+stream_flags_encode(uint8_t *flags_byte, const lzma_stream_flags *options)
+{
+ // Check type
+ if ((unsigned int)(options->check) > LZMA_CHECK_ID_MAX)
+ return true;
+
+ *flags_byte = options->check;
+
+ // Usage of CRC32 in Block Headers
+ if (options->has_crc32)
+ *flags_byte |= 0x08;
+
+ // Single- or Multi-Block
+ if (options->is_multi)
+ *flags_byte |= 0x10;
+
+ return false;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_stream_header_encode(uint8_t *out, const lzma_stream_flags *options)
+{
+ // Magic
+ memcpy(out, lzma_header_magic, sizeof(lzma_header_magic));
+
+ // Stream Flags
+ if (stream_flags_encode(out + sizeof(lzma_header_magic), options))
+ return LZMA_PROG_ERROR;;
+
+ // CRC32 of the Stream Header
+ const uint32_t crc = lzma_crc32(out + sizeof(lzma_header_magic), 1, 0);
+
+ for (size_t i = 0; i < 4; ++i)
+ out[sizeof(lzma_header_magic) + 1 + i] = crc >> (i * 8);
+
+ return LZMA_OK;
+}
+
+
+extern LZMA_API lzma_ret
+lzma_stream_tail_encode(uint8_t *out, const lzma_stream_flags *options)
+{
+ // Stream Flags
+ if (stream_flags_encode(out, options))
+ return LZMA_PROG_ERROR;
+
+ // Magic
+ memcpy(out + 1, lzma_footer_magic, sizeof(lzma_footer_magic));
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/sysdefs.h b/src/liblzma/common/sysdefs.h
new file mode 120000
index 0000000..c6cb676
--- /dev/null
+++ b/src/liblzma/common/sysdefs.h
@@ -0,0 +1 @@
+../../common/sysdefs.h
\ No newline at end of file
diff --git a/src/liblzma/common/version.c b/src/liblzma/common/version.c
new file mode 100644
index 0000000..dffec7f
--- /dev/null
+++ b/src/liblzma/common/version.c
@@ -0,0 +1,25 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file version.c
+/// \brief liblzma version number
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+LZMA_API const uint32_t lzma_version_number = LZMA_VERSION;
+
+LZMA_API const char *const lzma_version_string = PACKAGE_VERSION;
diff --git a/src/liblzma/common/vli_decoder.c b/src/liblzma/common/vli_decoder.c
new file mode 100644
index 0000000..2b89c1a
--- /dev/null
+++ b/src/liblzma/common/vli_decoder.c
@@ -0,0 +1,69 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file vli_decoder.c
+/// \brief Decodes variable-length integers
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API lzma_ret
+lzma_vli_decode(lzma_vli *restrict vli, size_t *restrict vli_pos,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size)
+{
+ if (*vli > LZMA_VLI_VALUE_MAX || *vli_pos >= 9
+ || (*vli >> (7 * *vli_pos)) != 0)
+ return LZMA_PROG_ERROR;
+
+ if (*in_pos >= in_size)
+ return LZMA_BUF_ERROR;
+
+ if (*vli_pos == 0) {
+ *vli_pos = 1;
+
+ if (in[*in_pos] <= 0x7F) {
+ // Single-byte integer
+ *vli = in[*in_pos];
+ ++*in_pos;
+ return LZMA_STREAM_END;
+ }
+
+ *vli = in[*in_pos] & 0x7F;
+ ++*in_pos;
+ }
+
+ while (*in_pos < in_size) {
+ // Read in the next byte.
+ *vli |= (lzma_vli)(in[*in_pos] & 0x7F) << (*vli_pos * 7);
+ ++*vli_pos;
+
+ // Check if this is the last byte of a multibyte integer.
+ if (in[*in_pos] & 0x80) {
+ ++*in_pos;
+ return LZMA_STREAM_END;
+ }
+
+ // Limit variable-length representation to nine bytes.
+ if (*vli_pos == 9)
+ return LZMA_DATA_ERROR;
+
+ // Increment input position only when the byte was accepted.
+ ++*in_pos;
+ }
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/common/vli_encoder.c b/src/liblzma/common/vli_encoder.c
new file mode 100644
index 0000000..1ecdb0d
--- /dev/null
+++ b/src/liblzma/common/vli_encoder.c
@@ -0,0 +1,81 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file vli_encoder.c
+/// \brief Encodes variable-length integers
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API lzma_ret
+lzma_vli_encode(lzma_vli vli, size_t *restrict vli_pos, size_t vli_size,
+ uint8_t *restrict out, size_t *restrict out_pos,
+ size_t out_size)
+{
+ if (vli > LZMA_VLI_VALUE_MAX || *vli_pos >= 9 || vli_size > 9
+ || (vli != 0 && (vli >> (7 * *vli_pos)) == 0))
+ return LZMA_PROG_ERROR;
+
+ if (*out_pos >= out_size)
+ return LZMA_BUF_ERROR;
+
+ if (*vli_pos == 0) {
+ *vli_pos = 1;
+
+ if (vli <= 0x7F && *vli_pos >= vli_size) {
+ // Single-byte integer
+ out[(*out_pos)++] = vli;
+ return LZMA_STREAM_END;
+ }
+
+ // First byte of a multibyte integer
+ out[(*out_pos)++] = (vli & 0x7F) | 0x80;
+ }
+
+ while (*out_pos < out_size) {
+ const lzma_vli b = vli >> (7 * *vli_pos);
+ ++*vli_pos;
+
+ if (b <= 0x7F && *vli_pos >= vli_size) {
+ // Last byte of a multibyte integer
+ out[(*out_pos)++] = (b & 0xFF) | 0x80;
+ return LZMA_STREAM_END;
+ }
+
+ // Middle byte of a multibyte integer
+ out[(*out_pos)++] = b & 0x7F;
+ }
+
+ // vli is not yet completely written out.
+ return LZMA_OK;
+}
+
+
+extern LZMA_API size_t
+lzma_vli_size(lzma_vli vli)
+{
+ if (vli > LZMA_VLI_VALUE_MAX)
+ return 0;
+
+ size_t i = 0;
+ do {
+ vli >>= 7;
+ ++i;
+ } while (vli != 0);
+
+ assert(i <= 9);
+ return i;
+}
diff --git a/src/liblzma/common/vli_reverse_decoder.c b/src/liblzma/common/vli_reverse_decoder.c
new file mode 100644
index 0000000..68ca6a4
--- /dev/null
+++ b/src/liblzma/common/vli_reverse_decoder.c
@@ -0,0 +1,55 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file vli_reverse_decoder.c
+/// \brief Decodes variable-length integers starting at end of the buffer
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+extern LZMA_API lzma_ret
+lzma_vli_reverse_decode(lzma_vli *vli, const uint8_t *in, size_t *in_size)
+{
+ if (*in_size == 0)
+ return LZMA_BUF_ERROR;
+
+ size_t i = *in_size - 1;
+ *vli = in[i] & 0x7F;
+
+ if (!(in[i] & 0x80)) {
+ *in_size = i;
+ return LZMA_OK;
+ }
+
+ const size_t end = *in_size > LZMA_VLI_BYTES_MAX
+ ? *in_size - LZMA_VLI_BYTES_MAX : 0;
+
+ do {
+ if (i-- == end) {
+ if (*in_size < LZMA_VLI_BYTES_MAX)
+ return LZMA_BUF_ERROR;
+
+ return LZMA_DATA_ERROR;
+ }
+
+ *vli <<= 7;
+ *vli = in[i] & 0x7F;
+
+ } while (!(in[i] & 0x80));
+
+ *in_size = i;
+ return LZMA_OK;
+}
diff --git a/src/liblzma/lz/Makefile.am b/src/liblzma/lz/Makefile.am
new file mode 100644
index 0000000..5c27e2f
--- /dev/null
+++ b/src/liblzma/lz/Makefile.am
@@ -0,0 +1,63 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+noinst_LTLIBRARIES = liblz.la
+liblz_la_CPPFLAGS = \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_srcdir@/src/liblzma/common \
+ -I@top_srcdir@/src/liblzma/check
+liblz_la_SOURCES =
+
+
+if COND_MAIN_ENCODER
+liblz_la_SOURCES += \
+ lz_encoder.c \
+ lz_encoder.h \
+ lz_encoder_private.h \
+ match_c.h \
+ match_h.h
+
+if COND_MF_HC3
+liblz_la_SOURCES += hc3.c hc3.h
+liblz_la_CPPFLAGS += -DHAVE_HC3
+endif
+
+if COND_MF_HC4
+liblz_la_SOURCES += hc4.c hc4.h
+liblz_la_CPPFLAGS += -DHAVE_HC4
+endif
+
+if COND_MF_BT2
+liblz_la_SOURCES += bt2.c bt2.h
+liblz_la_CPPFLAGS += -DHAVE_BT2
+endif
+
+if COND_MF_BT3
+liblz_la_SOURCES += bt3.c bt3.h
+liblz_la_CPPFLAGS += -DHAVE_BT3
+endif
+
+if COND_MF_BT4
+liblz_la_SOURCES += bt4.c bt4.h
+liblz_la_CPPFLAGS += -DHAVE_BT4
+endif
+
+endif
+
+
+if COND_MAIN_DECODER
+liblz_la_SOURCES += \
+ lz_decoder.c \
+ lz_decoder.h
+endif
diff --git a/src/liblzma/lz/bt2.c b/src/liblzma/lz/bt2.c
new file mode 100644
index 0000000..7dc4cb8
--- /dev/null
+++ b/src/liblzma/lz/bt2.c
@@ -0,0 +1,27 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file bt2.c
+/// \brief Binary Tree 2
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "bt2.h"
+
+#undef IS_HASH_CHAIN
+#undef HASH_ARRAY_2
+#undef HASH_ARRAY_3
+
+#include "match_c.h"
diff --git a/src/liblzma/lz/bt2.h b/src/liblzma/lz/bt2.h
new file mode 100644
index 0000000..33cb52c
--- /dev/null
+++ b/src/liblzma/lz/bt2.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file bt2.h
+/// \brief Binary Tree 2
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BT2_H
+#define LZMA_BT2_H
+
+#undef LZMA_MATCH_FINDER_NAME_LOWER
+#undef LZMA_MATCH_FINDER_NAME_UPPER
+#define LZMA_MATCH_FINDER_NAME_LOWER bt2
+#define LZMA_MATCH_FINDER_NAME_UPPER BT2
+
+#include "match_h.h"
+
+#endif
diff --git a/src/liblzma/lz/bt3.c b/src/liblzma/lz/bt3.c
new file mode 100644
index 0000000..d44310f
--- /dev/null
+++ b/src/liblzma/lz/bt3.c
@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file bt3.c
+/// \brief Binary Tree 3
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "bt3.h"
+
+#undef IS_HASH_CHAIN
+#undef HASH_ARRAY_2
+#undef HASH_ARRAY_3
+
+#define HASH_ARRAY_2
+
+#include "match_c.h"
diff --git a/src/liblzma/lz/bt3.h b/src/liblzma/lz/bt3.h
new file mode 100644
index 0000000..247c7e5
--- /dev/null
+++ b/src/liblzma/lz/bt3.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file bt3.h
+/// \brief Binary Tree 3
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BT3_H
+#define LZMA_BT3_H
+
+#undef LZMA_MATCH_FINDER_NAME_LOWER
+#undef LZMA_MATCH_FINDER_NAME_UPPER
+#define LZMA_MATCH_FINDER_NAME_LOWER bt3
+#define LZMA_MATCH_FINDER_NAME_UPPER BT3
+
+#include "match_h.h"
+
+#endif
diff --git a/src/liblzma/lz/bt4.c b/src/liblzma/lz/bt4.c
new file mode 100644
index 0000000..6e1042c
--- /dev/null
+++ b/src/liblzma/lz/bt4.c
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file bt4.c
+/// \brief Binary Tree 4
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "bt4.h"
+
+#undef IS_HASH_CHAIN
+#undef HASH_ARRAY_2
+#undef HASH_ARRAY_3
+
+#define HASH_ARRAY_2
+#define HASH_ARRAY_3
+
+#include "match_c.h"
diff --git a/src/liblzma/lz/bt4.h b/src/liblzma/lz/bt4.h
new file mode 100644
index 0000000..e3fcf6a
--- /dev/null
+++ b/src/liblzma/lz/bt4.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file bt4.h
+/// \brief Binary Tree 4
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_BT4_H
+#define LZMA_BT4_H
+
+#undef LZMA_MATCH_FINDER_NAME_LOWER
+#undef LZMA_MATCH_FINDER_NAME_UPPER
+#define LZMA_MATCH_FINDER_NAME_LOWER bt4
+#define LZMA_MATCH_FINDER_NAME_UPPER BT4
+
+#include "match_h.h"
+
+#endif
diff --git a/src/liblzma/lz/hc3.c b/src/liblzma/lz/hc3.c
new file mode 100644
index 0000000..22b5689
--- /dev/null
+++ b/src/liblzma/lz/hc3.c
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file hc3.c
+/// \brief Hash Chain 3
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "hc3.h"
+
+#undef IS_HASH_CHAIN
+#undef HASH_ARRAY_2
+#undef HASH_ARRAY_3
+
+#define IS_HASH_CHAIN
+#define HASH_ARRAY_2
+
+#include "match_c.h"
diff --git a/src/liblzma/lz/hc3.h b/src/liblzma/lz/hc3.h
new file mode 100644
index 0000000..97be0b1
--- /dev/null
+++ b/src/liblzma/lz/hc3.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file hc3.h
+/// \brief Hash Chain 3
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_HC3_H
+#define LZMA_HC3_H
+
+#undef LZMA_MATCH_FINDER_NAME_LOWER
+#undef LZMA_MATCH_FINDER_NAME_UPPER
+#define LZMA_MATCH_FINDER_NAME_LOWER hc3
+#define LZMA_MATCH_FINDER_NAME_UPPER HC3
+
+#include "match_h.h"
+
+#endif
diff --git a/src/liblzma/lz/hc4.c b/src/liblzma/lz/hc4.c
new file mode 100644
index 0000000..a55cfd0
--- /dev/null
+++ b/src/liblzma/lz/hc4.c
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file hc4.c
+/// \brief Hash Chain 4
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "hc4.h"
+
+#undef IS_HASH_CHAIN
+#undef HASH_ARRAY_2
+#undef HASH_ARRAY_3
+
+#define IS_HASH_CHAIN
+#define HASH_ARRAY_2
+#define HASH_ARRAY_3
+
+#include "match_c.h"
diff --git a/src/liblzma/lz/hc4.h b/src/liblzma/lz/hc4.h
new file mode 100644
index 0000000..dc072e2
--- /dev/null
+++ b/src/liblzma/lz/hc4.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file hc4.h
+/// \brief Hash Chain 4
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_HC4_H
+#define LZMA_HC4_H
+
+#undef LZMA_MATCH_FINDER_NAME_LOWER
+#undef LZMA_MATCH_FINDER_NAME_UPPER
+#define LZMA_MATCH_FINDER_NAME_LOWER hc4
+#define LZMA_MATCH_FINDER_NAME_UPPER HC4
+
+#include "match_h.h"
+
+#endif
diff --git a/src/liblzma/lz/lz_decoder.c b/src/liblzma/lz/lz_decoder.c
new file mode 100644
index 0000000..9c110de
--- /dev/null
+++ b/src/liblzma/lz/lz_decoder.c
@@ -0,0 +1,462 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lz_decoder.c
+/// \brief LZ out window
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "lz_decoder.h"
+
+
+/// Minimum size of allocated dictionary
+#define DICT_SIZE_MIN 8192
+
+/// When there is less than this amount of data available for decoding,
+/// it is moved to the temporary buffer which
+/// - protects from reads past the end of the buffer; and
+/// - stored the incomplete data between lzma_code() calls.
+///
+/// \note TEMP_LIMIT must be at least as much as
+/// REQUIRED_IN_BUFFER_SIZE defined in lzma_decoder.c.
+#define TEMP_LIMIT 32
+
+// lzma_lz_decoder.dict[] must be three times the size of TEMP_LIMIT.
+// 2 * TEMP_LIMIT is used for the actual data, and the third TEMP_LIMIT
+// bytes is needed for safety to allow decode_dummy() in lzma_decoder.c
+// to read past end of the buffer. This way it should be both fast and simple.
+#if LZMA_BUFFER_SIZE < 3 * TEMP_LIMIT
+# error LZMA_BUFFER_SIZE < 3 * TEMP_LIMIT
+#endif
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+ lzma_lz_decoder lz;
+
+ // There are more members in this structure but they are not
+ // visible in LZ coder.
+};
+
+
+/// - Copy as much data as possible from lz->dict[] to out[].
+/// - Update *out_pos, lz->start, and lz->end accordingly.
+/// - Wrap lz-pos to the beginning of lz->dict[] if there is a danger that
+/// it may go past the end of the buffer (lz->pos >= lz->must_flush_pos).
+static inline bool
+flush(lzma_lz_decoder *restrict lz, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size)
+{
+ // Flush uncompressed data from the history buffer to
+ // the output buffer. This is done in two phases.
+
+ assert(lz->start <= lz->end);
+
+ // Flush if pos < start < end.
+ if (lz->pos < lz->start && lz->start < lz->end) {
+ bufcpy(lz->dict, &lz->start, lz->end, out, out_pos, out_size);
+
+ // If we reached end of the data in history buffer,
+ // wrap to the beginning.
+ if (lz->start == lz->end)
+ lz->start = 0;
+ }
+
+ // Flush if start start < pos <= end. This is not as `else' for
+ // previous `if' because the previous one may make this one true.
+ if (lz->start < lz->pos) {
+ bufcpy(lz->dict, &lz->start,
+ lz->pos, out, out_pos, out_size);
+
+ if (lz->pos >= lz->must_flush_pos) {
+ // Wrap the flushing position if we have
+ // flushed the whole history buffer.
+ if (lz->pos == lz->start)
+ lz->start = 0;
+
+ // Wrap the write position and store to lz.end
+ // how much there is new data available.
+ lz->end = lz->pos;
+ lz->pos = 0;
+ lz->is_full = true;
+ }
+ }
+
+ assert(lz->pos < lz->must_flush_pos);
+
+ return *out_pos == out_size;
+}
+
+
+/// Calculate safe value for lz->limit. If no safe value can be found,
+/// set lz->limit to zero. When flushing, only as little data will be
+/// decoded as is needed to fill the output buffer (lowers both latency
+/// and throughput).
+///
+/// \return true if there is no space for new uncompressed data.
+///
+static inline bool
+set_limit(lzma_lz_decoder *lz, size_t out_avail, bool flushing)
+{
+ // Set the limit so that writing to dict[limit + match_max_len - 1]
+ // doesn't overwrite any unflushed data and doesn't write past the
+ // end of the dict buffer.
+ if (lz->start <= lz->pos) {
+ // We can fill the buffer from pos till the end
+ // of the dict buffer.
+ lz->limit = lz->must_flush_pos;
+ } else if (lz->pos + lz->match_max_len < lz->start) {
+ // There's some unflushed data between pos and end of the
+ // buffer. Limit so that we don't overwrite the unflushed data.
+ lz->limit = lz->start - lz->match_max_len;
+ } else {
+ // Buffer is too full.
+ lz->limit = 0;
+ return true;
+ }
+
+ // Finetune the limit a bit if it isn't zero.
+
+ assert(lz->limit > lz->pos);
+ const size_t dict_avail = lz->limit - lz->pos;
+
+ if (lz->uncompressed_size < dict_avail) {
+ // Finishing a stream that doesn't have
+ // an end of stream marker.
+ lz->limit = lz->pos + lz->uncompressed_size;
+
+ } else if (flushing && out_avail < dict_avail) {
+ // Flushing enabled, decoding only as little as needed to
+ // fill the out buffer (if there's enough input, of course).
+ lz->limit = lz->pos + out_avail;
+ }
+
+ return lz->limit == lz->pos;
+}
+
+
+/// Takes care of wrapping the data into temporary buffer when needed,
+/// and calls the actual decoder.
+///
+/// \return true if error occurred
+///
+static inline bool
+call_process(lzma_coder *restrict coder, const uint8_t *restrict in,
+ size_t *restrict in_pos, size_t in_size)
+{
+ // It would be nice and simple if we could just give in[] to the
+ // decoder, but the requirement of zlib-like API forces us to be
+ // able to make *in_pos == in_size whenever there is enough output
+ // space. If needed, we will append a few bytes from in[] to
+ // a temporary buffer and decode enough to reach the part that
+ // was copied from in[]. Then we can continue with the real in[].
+
+ bool error;
+ const size_t dict_old_pos = coder->lz.pos;
+ const size_t in_avail = in_size - *in_pos;
+
+ if (coder->lz.temp_size + in_avail < 2 * TEMP_LIMIT) {
+ // Copy all the available input from in[] to temp[].
+ memcpy(coder->lz.temp + coder->lz.temp_size,
+ in + *in_pos, in_avail);
+ coder->lz.temp_size += in_avail;
+ *in_pos += in_avail;
+ assert(*in_pos == in_size);
+
+ // Decode as much as possible.
+ size_t temp_used = 0;
+ error = coder->lz.process(coder, coder->lz.temp, &temp_used,
+ coder->lz.temp_size, true);
+ assert(temp_used <= coder->lz.temp_size);
+
+ // Move the remaining data to the beginning of temp[].
+ coder->lz.temp_size -= temp_used;
+ memmove(coder->lz.temp, coder->lz.temp + temp_used,
+ coder->lz.temp_size);
+
+ } else if (coder->lz.temp_size > 0) {
+ // Fill temp[] unless it is already full because we aren't
+ // the last filter in the chain.
+ size_t copy_size = 0;
+ if (coder->lz.temp_size < 2 * TEMP_LIMIT) {
+ assert(*in_pos < in_size);
+ copy_size = 2 * TEMP_LIMIT - coder->lz.temp_size;
+ memcpy(coder->lz.temp + coder->lz.temp_size,
+ in + *in_pos, copy_size);
+ // NOTE: We don't update lz.temp_size or *in_pos yet.
+ }
+
+ size_t temp_used = 0;
+ error = coder->lz.process(coder, coder->lz.temp, &temp_used,
+ coder->lz.temp_size + copy_size, false);
+
+ if (temp_used < coder->lz.temp_size) {
+ // Only very little input data was consumed. Move
+ // the unprocessed data to the beginning temp[].
+ coder->lz.temp_size += copy_size - temp_used;
+ memmove(coder->lz.temp, coder->lz.temp + temp_used,
+ coder->lz.temp_size);
+ *in_pos += copy_size;
+ assert(*in_pos <= in_size);
+
+ } else {
+ // We were able to decode so much data that next time
+ // we can decode directly from in[]. That is, we can
+ // consider temp[] to be empty now.
+ *in_pos += temp_used - coder->lz.temp_size;
+ coder->lz.temp_size = 0;
+ assert(*in_pos <= in_size);
+ }
+
+ } else {
+ // Decode directly from in[].
+ error = coder->lz.process(coder, in, in_pos, in_size, false);
+ assert(*in_pos <= in_size);
+ }
+
+ assert(coder->lz.pos >= dict_old_pos);
+ if (coder->lz.uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ // Update uncompressed size.
+ coder->lz.uncompressed_size -= coder->lz.pos - dict_old_pos;
+
+ // Check that End of Payload Marker hasn't been detected
+ // since it must not be present because uncompressed size
+ // is known.
+ if (coder->lz.eopm_detected)
+ error = true;
+ }
+
+ return error;
+}
+
+
+static lzma_ret
+decode_buffer(lzma_coder *coder,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ bool flushing)
+{
+ bool stop = false;
+
+ while (true) {
+ // Flush from coder->lz.dict to out[].
+ flush(&coder->lz, out, out_pos, out_size);
+
+ // All done?
+ if (*out_pos == out_size
+ || stop
+ || coder->lz.eopm_detected
+ || coder->lz.uncompressed_size == 0)
+ break;
+
+ // Set write limit in the dictionary.
+ if (set_limit(&coder->lz, out_size - *out_pos, flushing))
+ break;
+
+ // Decode more data.
+ if (call_process(coder, in, in_pos, in_size))
+ return LZMA_DATA_ERROR;
+
+ // Set stop to true if we must not call call_process() again
+ // during this function call.
+ // FIXME: Can this make the loop exist too early? It wouldn't
+ // cause data corruption so not a critical problem. It can
+ // happen if dictionary gets full and lz.temp still contains
+ // a few bytes data that we could decode right now.
+ if (*in_pos == in_size && coder->lz.temp_size <= TEMP_LIMIT
+ && coder->lz.pos < coder->lz.limit)
+ stop = true;
+ }
+
+ // If we have decoded everything (EOPM detected or uncompressed_size
+ // bytes were processed) to the history buffer, and also flushed
+ // everything from the history buffer, our job is done.
+ if ((coder->lz.eopm_detected
+ || coder->lz.uncompressed_size == 0)
+ && coder->lz.start == coder->lz.pos)
+ return LZMA_STREAM_END;
+
+ return LZMA_OK;
+}
+
+
+extern lzma_ret
+lzma_lz_decode(lzma_coder *coder,
+ lzma_allocator *allocator lzma_attribute((unused)),
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action)
+{
+ if (coder->next.code == NULL) {
+ const lzma_ret ret = decode_buffer(coder, in, in_pos, in_size,
+ out, out_pos, out_size,
+ action == LZMA_SYNC_FLUSH);
+
+ if (*out_pos == out_size || ret == LZMA_STREAM_END) {
+ // Unread to make coder->temp[] empty. This is easy,
+ // because we know that all the data currently in
+ // coder->temp[] has been copied form in[] during this
+ // call to the decoder.
+ //
+ // If we didn't do this, we could have data left in
+ // coder->temp[] when end of stream is reached. That
+ // data could be left there from *previous* call to
+ // the decoder; in that case we wouldn't know where
+ // to put that data.
+ assert(*in_pos >= coder->lz.temp_size);
+ *in_pos -= coder->lz.temp_size;
+ coder->lz.temp_size = 0;
+ }
+
+ return ret;
+ }
+
+ // We aren't the last coder in the chain, we need to decode
+ // our input to a temporary buffer.
+ const bool flushing = action == LZMA_SYNC_FLUSH;
+ while (*out_pos < out_size) {
+ if (!coder->lz.next_finished
+ && coder->lz.temp_size < LZMA_BUFFER_SIZE) {
+ const lzma_ret ret = coder->next.code(
+ coder->next.coder,
+ allocator, in, in_pos, in_size,
+ coder->lz.temp, &coder->lz.temp_size,
+ LZMA_BUFFER_SIZE, action);
+
+ if (ret == LZMA_STREAM_END)
+ coder->lz.next_finished = true;
+ else if (coder->lz.temp_size < LZMA_BUFFER_SIZE
+ || ret != LZMA_OK)
+ return ret;
+ }
+
+ if (coder->lz.this_finished) {
+ if (coder->lz.temp_size != 0)
+ return LZMA_DATA_ERROR;
+
+ if (coder->lz.next_finished)
+ return LZMA_STREAM_END;
+
+ return LZMA_OK;
+ }
+
+ size_t dummy = 0;
+ const lzma_ret ret = decode_buffer(coder, NULL, &dummy, 0,
+ out, out_pos, out_size, flushing);
+
+ if (ret == LZMA_STREAM_END)
+ coder->lz.this_finished = true;
+ else if (ret != LZMA_OK)
+ return ret;
+ else if (coder->lz.next_finished && *out_pos < out_size)
+ return LZMA_DATA_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+/// \brief Initializes LZ part of the LZMA decoder or Inflate
+///
+/// \param history_size Number of bytes the LZ out window is
+/// supposed keep available from the output
+/// history.
+/// \param match_max_len Number of bytes a single decoding loop
+/// can advance the write position (lz->pos)
+/// in the history buffer (lz->dict).
+///
+/// \note This function is called by LZMA decoder and Inflate init()s.
+/// It's up to those functions allocate *lz and initialize it
+/// with LZMA_LZ_DECODER_INIT.
+extern lzma_ret
+lzma_lz_decoder_reset(lzma_lz_decoder *lz, lzma_allocator *allocator,
+ bool (*process)(lzma_coder *restrict coder,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, bool has_safe_buffer),
+ lzma_vli uncompressed_size,
+ size_t history_size, size_t match_max_len)
+{
+ // Set uncompressed size.
+ lz->uncompressed_size = uncompressed_size;
+
+ // Limit the history size to roughly sane values. This is primarily
+ // to prevent integer overflows.
+ if (history_size > UINT32_MAX / 2)
+ return LZMA_HEADER_ERROR;
+
+ // Store the value actually requested. We use it for sanity checks
+ // when repeating data from the history buffer.
+ lz->requested_size = history_size;
+
+ // Avoid tiny history buffer sizes for performance reasons.
+ // TODO: Test if this actually helps...
+ if (history_size < DICT_SIZE_MIN)
+ history_size = DICT_SIZE_MIN;
+
+ // The real size of the history buffer is a bit bigger than
+ // requested by our caller. This allows us to do some optimizations,
+ // which help not only speed but simplicity of the code; specifically,
+ // we can make sure that there is always at least match_max_len
+ // bytes immediatelly available for writing without a need to wrap
+ // the history buffer.
+ const size_t dict_real_size = history_size + 2 * match_max_len + 1;
+
+ // Reallocate memory if needed.
+ if (history_size != lz->size || match_max_len != lz->match_max_len) {
+ // Destroy the old buffer.
+ lzma_lz_decoder_end(lz, allocator);
+
+ lz->size = history_size;
+ lz->match_max_len = match_max_len;
+ lz->must_flush_pos = history_size + match_max_len + 1;
+
+ lz->dict = lzma_alloc(dict_real_size, allocator);
+ if (lz->dict == NULL)
+ return LZMA_MEM_ERROR;
+ }
+
+ // Clean up the buffers to make it very sure that there are
+ // no information leaks when multiple steams are decoded
+ // with the same decoder structures.
+ memzero(lz->dict, dict_real_size);
+ memzero(lz->temp, LZMA_BUFFER_SIZE);
+
+ // Reset the variables so that lz_get_byte(lz, 0) will return '\0'.
+ lz->pos = 0;
+ lz->start = 0;
+ lz->end = dict_real_size;
+ lz->is_full = false;
+ lz->eopm_detected = false;
+ lz->next_finished = false;
+ lz->this_finished = false;
+
+ // Set the process function pointer.
+ lz->process = process;
+
+ return LZMA_OK;
+}
+
+
+extern void
+lzma_lz_decoder_end(lzma_lz_decoder *lz, lzma_allocator *allocator)
+{
+ lzma_free(lz->dict, allocator);
+ lz->dict = NULL;
+ lz->size = 0;
+ lz->match_max_len = 0;
+ return;
+}
diff --git a/src/liblzma/lz/lz_decoder.h b/src/liblzma/lz/lz_decoder.h
new file mode 100644
index 0000000..a8a585c
--- /dev/null
+++ b/src/liblzma/lz/lz_decoder.h
@@ -0,0 +1,214 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lz_decoder.h
+/// \brief LZ out window
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZ_OUT_H
+#define LZMA_LZ_OUT_H
+
+#include "common.h"
+
+
+/// Get a byte from the history buffer.
+#define lz_get_byte(lz, distance) \
+ ((distance) < (lz).pos \
+ ? (lz).dict[(lz).pos - (distance) - 1] \
+ : (lz).dict[(lz).pos - (distance) - 1 + (lz).end])
+
+
+#define LZMA_LZ_DECODER_INIT \
+ (lzma_lz_decoder){ .dict = NULL, .size = 0, .match_max_len = 0 }
+
+
+typedef struct {
+ /// Function to do the actual decoding (LZMA or Inflate)
+ bool (*process)(lzma_coder *restrict coder, const uint8_t *restrict in,
+ size_t *restrict in_pos, size_t size_in,
+ bool has_safe_buffer);
+
+ /// Pointer to dictionary (history) buffer.
+ /// \note Not 'restrict' because can alias next_out.
+ uint8_t *dict;
+
+ /// Next write goes to dict[pos].
+ size_t pos;
+
+ /// Next byte to flush is buffer[start].
+ size_t start;
+
+ /// First byte to not flush is buffer[end].
+ size_t end;
+
+ /// First position to which data must not be written.
+ size_t limit;
+
+ /// True if dictionary has needed wrapping.
+ bool is_full;
+
+ /// True if process() has detected End of Payload Marker.
+ bool eopm_detected;
+
+ /// True if the next coder in the chain has returned LZMA_STREAM_END.
+ bool next_finished;
+
+ /// True if the LZ decoder (e.g. LZMA) has detected End of Payload
+ /// Marker. This may become true before next_finished becomes true.
+ bool this_finished;
+
+ /// When pos >= must_flush_pos, we must not call process().
+ size_t must_flush_pos;
+
+ /// Maximum number of bytes that a single decoding loop inside
+ /// process() can produce data into dict. This amount is kept
+ /// always available at dict + pos i.e. it is safe to write a byte
+ /// to dict[pos + match_max_len - 1].
+ size_t match_max_len;
+
+ /// Number of bytes allocated to dict.
+ size_t size;
+
+ /// Requested size of the dictionary. This is needed because we avoid
+ /// using extremely tiny history buffers.
+ size_t requested_size;
+
+ /// Uncompressed Size or LZMA_VLI_VALUE_UNKNOWN if unknown.
+ lzma_vli uncompressed_size;
+
+ /// Number of bytes currently in temp[].
+ size_t temp_size;
+
+ /// Temporary buffer needed when
+ /// 1) we cannot make the input buffer completely empty; or
+ /// 2) we are not the last filter in the chain.
+ uint8_t temp[LZMA_BUFFER_SIZE];
+
+} lzma_lz_decoder;
+
+
+/////////////////////////
+// Function prototypes //
+/////////////////////////
+
+extern lzma_ret lzma_lz_decoder_reset(lzma_lz_decoder *lz,
+ lzma_allocator *allocator, bool (*process)(
+ lzma_coder *restrict coder, const uint8_t *restrict in,
+ size_t *restrict in_pos, size_t in_size,
+ bool has_safe_buffer),
+ lzma_vli uncompressed_size,
+ size_t history_size, size_t match_max_len);
+
+extern lzma_ret lzma_lz_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action);
+
+/// Deallocates the history buffer if one exists.
+extern void lzma_lz_decoder_end(
+ lzma_lz_decoder *lz, lzma_allocator *allocator);
+
+//////////////////////
+// Inline functions //
+//////////////////////
+
+// Repeat a block of data from the history. Because memcpy() is faster
+// than copying byte by byte in a loop, the copying process gets split
+// into three cases:
+// 1. distance < length
+// Source and target areas overlap, thus we can't use memcpy()
+// (nor memmove()) safely.
+// TODO: If this is common enough, it might be worth optimizing this
+// more e.g. by checking if distance > sizeof(uint8_t*) and using
+// memcpy in small chunks.
+// 2. distance < pos
+// This is the easiest and the fastest case. The block being copied
+// is a contiguous piece in the history buffer. The buffer offset
+// doesn't need wrapping.
+// 3. distance >= pos
+// We need to wrap the position, because otherwise we would try copying
+// behind the first byte of the allocated buffer. It is possible that
+// the block is fragmeneted into two pieces, thus we might need to call
+// memcpy() twice.
+// NOTE: The function using this macro must ensure that length is positive
+// and that distance is FIXME
+static inline bool
+lzma_lz_out_repeat(lzma_lz_decoder *lz, size_t distance, size_t length)
+{
+ // Validate offset of the block to be repeated. It doesn't
+ // make sense to copy data behind the beginning of the stream.
+ // Leaving this check away would lead to a security problem,
+ // in which e.g. the data of the previously decoded file(s)
+ // would be leaked (or whatever happens to be in unused
+ // part of the dictionary buffer).
+ if (distance >= lz->pos && !lz->is_full)
+ return false;
+
+ // It also doesn't make sense to copy data farer than
+ // the dictionary size.
+ if (distance >= lz->requested_size)
+ return false;
+
+ // The caller must have checked these!
+ assert(distance <= lz->size);
+ assert(length > 0);
+ assert(length <= lz->match_max_len);
+
+ // Copy the amount of data requested by the decoder.
+ if (distance < length) {
+ // Source and target areas overlap, thus we can't use
+ // memcpy() nor even memmove() safely. :-(
+ // TODO: Copying byte by byte is slow. It might be
+ // worth optimizing this more if this case is common.
+ do {
+ lz->dict[lz->pos] = lz_get_byte(*lz, distance);
+ ++lz->pos;
+ } while (--length > 0);
+
+ } else if (distance < lz->pos) {
+ // The easiest and fastest case
+ memcpy(lz->dict + lz->pos,
+ lz->dict + lz->pos - distance - 1,
+ length);
+ lz->pos += length;
+
+ } else {
+ // The bigger the dictionary, the more rare this
+ // case occurs. We need to "wrap" the dict, thus
+ // we might need two memcpy() to copy all the data.
+ assert(lz->is_full);
+ const uint32_t copy_pos = lz->pos - distance - 1 + lz->end;
+ uint32_t copy_size = lz->end - copy_pos;
+
+ if (copy_size < length) {
+ memcpy(lz->dict + lz->pos, lz->dict + copy_pos,
+ copy_size);
+ lz->pos += copy_size;
+ copy_size = length - copy_size;
+ memcpy(lz->dict + lz->pos, lz->dict, copy_size);
+ lz->pos += copy_size;
+ } else {
+ memcpy(lz->dict + lz->pos, lz->dict + copy_pos,
+ length);
+ lz->pos += length;
+ }
+ }
+
+ return true;
+}
+
+#endif
diff --git a/src/liblzma/lz/lz_encoder.c b/src/liblzma/lz/lz_encoder.c
new file mode 100644
index 0000000..bc38cae
--- /dev/null
+++ b/src/liblzma/lz/lz_encoder.c
@@ -0,0 +1,481 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lz_encoder.c
+/// \brief LZ in window
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "lz_encoder_private.h"
+
+// Hash Chains
+#ifdef HAVE_HC3
+# include "hc3.h"
+#endif
+#ifdef HAVE_HC4
+# include "hc4.h"
+#endif
+
+// Binary Trees
+#ifdef HAVE_BT2
+# include "bt2.h"
+#endif
+#ifdef HAVE_BT3
+# include "bt3.h"
+#endif
+#ifdef HAVE_BT4
+# include "bt4.h"
+#endif
+
+
+/// This is needed in two places so provide a macro.
+#define get_cyclic_buffer_size(history_size) ((history_size) + 1)
+
+
+/// Calculate certain match finder properties and validate the calculated
+/// values. This is as its own function, because *num_items is needed to
+/// calculate memory requirements in common/memory.c.
+extern uint32_t
+lzma_lz_encoder_hash_properties(lzma_match_finder match_finder,
+ uint32_t history_size, uint32_t *restrict hash_mask,
+ uint32_t *restrict hash_size_sum, uint32_t *restrict num_items)
+{
+ uint32_t fix_hash_size;
+ uint32_t sons;
+
+ switch (match_finder) {
+#ifdef HAVE_HC3
+ case LZMA_MF_HC3:
+ fix_hash_size = LZMA_HC3_FIX_HASH_SIZE;
+ sons = 1;
+ break;
+#endif
+#ifdef HAVE_HC4
+ case LZMA_MF_HC4:
+ fix_hash_size = LZMA_HC4_FIX_HASH_SIZE;
+ sons = 1;
+ break;
+#endif
+#ifdef HAVE_BT2
+ case LZMA_MF_BT2:
+ fix_hash_size = LZMA_BT2_FIX_HASH_SIZE;
+ sons = 2;
+ break;
+#endif
+#ifdef HAVE_BT3
+ case LZMA_MF_BT3:
+ fix_hash_size = LZMA_BT3_FIX_HASH_SIZE;
+ sons = 2;
+ break;
+#endif
+#ifdef HAVE_BT4
+ case LZMA_MF_BT4:
+ fix_hash_size = LZMA_BT4_FIX_HASH_SIZE;
+ sons = 2;
+ break;
+#endif
+ default:
+ return true;
+ }
+
+ uint32_t hs;
+
+#ifdef HAVE_LZMA_BT2
+ if (match_finder == LZMA_BT2) {
+ // NOTE: hash_mask is not used by the BT2 match finder,
+ // but it is initialized just in case.
+ hs = LZMA_BT2_HASH_SIZE;
+ *hash_mask = 0;
+ } else
+#endif
+ {
+ hs = history_size - 1;
+ hs |= (hs >> 1);
+ hs |= (hs >> 2);
+ hs |= (hs >> 4);
+ hs |= (hs >> 8);
+ hs >>= 1;
+ hs |= 0xFFFF;
+
+ if (hs > (UINT32_C(1) << 24)) {
+ if (match_finder == LZMA_MF_HC4
+ || match_finder == LZMA_MF_BT4)
+ hs >>= 1;
+ else
+ hs = (1 << 24) - 1;
+ }
+
+ *hash_mask = hs;
+ ++hs;
+ }
+
+ *hash_size_sum = hs + fix_hash_size;
+
+ *num_items = *hash_size_sum
+ + get_cyclic_buffer_size(history_size) * sons;
+
+ return false;
+}
+
+
+extern lzma_ret
+lzma_lz_encoder_reset(lzma_lz_encoder *lz, lzma_allocator *allocator,
+ bool (*process)(lzma_coder *coder, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size),
+ lzma_vli uncompressed_size,
+ size_t history_size, size_t additional_buffer_before,
+ size_t match_max_len, size_t additional_buffer_after,
+ lzma_match_finder match_finder, uint32_t match_finder_cycles,
+ const uint8_t *preset_dictionary,
+ size_t preset_dictionary_size)
+{
+ // Set uncompressed size.
+ lz->uncompressed_size = uncompressed_size;
+
+ ///////////////
+ // In Window //
+ ///////////////
+
+ // Validate history size.
+ if (history_size < LZMA_DICTIONARY_SIZE_MIN
+ || history_size > LZMA_DICTIONARY_SIZE_MAX) {
+ lzma_lz_encoder_end(lz, allocator);
+ return LZMA_HEADER_ERROR;
+ }
+
+ assert(history_size <= MAX_VAL_FOR_NORMALIZE - 256);
+ assert(LZMA_DICTIONARY_SIZE_MAX <= MAX_VAL_FOR_NORMALIZE - 256);
+
+ // Calculate the size of the history buffer to allocate.
+ // TODO: Get a reason for magic constant of 256.
+ const size_t size_reserv = (history_size + additional_buffer_before
+ + match_max_len + additional_buffer_after) / 2 + 256;
+
+ lz->keep_size_before = history_size + additional_buffer_before;
+ lz->keep_size_after = match_max_len + additional_buffer_after;
+
+ const size_t buffer_size = lz->keep_size_before + lz->keep_size_after
+ + size_reserv;
+
+ // Allocate history buffer if its size has changed.
+ if (buffer_size != lz->size) {
+ lzma_free(lz->buffer, allocator);
+ lz->buffer = lzma_alloc(buffer_size, allocator);
+ if (lz->buffer == NULL) {
+ lzma_lz_encoder_end(lz, allocator);
+ return LZMA_MEM_ERROR;
+ }
+ }
+
+ // Allocation successful. Store the new size and calculate
+ // must_move_pos.
+ lz->size = buffer_size;
+ lz->must_move_pos = lz->size - lz->keep_size_after;
+
+ // Reset in window variables.
+ lz->offset = 0;
+ lz->read_pos = 0;
+ lz->read_limit = 0;
+ lz->write_pos = 0;
+ lz->stream_end_was_reached = false;
+
+
+ //////////////////
+ // Match Finder //
+ //////////////////
+
+ // Validate match_finder, set function pointers and a few match
+ // finder specific variables.
+ switch (match_finder) {
+#ifdef HAVE_HC3
+ case LZMA_MF_HC3:
+ lz->get_matches = &lzma_hc3_get_matches;
+ lz->skip = &lzma_hc3_skip;
+ lz->cut_value = 8 + (match_max_len >> 2);
+ break;
+#endif
+#ifdef HAVE_HC4
+ case LZMA_MF_HC4:
+ lz->get_matches = &lzma_hc4_get_matches;
+ lz->skip = &lzma_hc4_skip;
+ lz->cut_value = 8 + (match_max_len >> 2);
+ break;
+#endif
+#ifdef HAVE_BT2
+ case LZMA_MF_BT2:
+ lz->get_matches = &lzma_bt2_get_matches;
+ lz->skip = &lzma_bt2_skip;
+ lz->cut_value = 16 + (match_max_len >> 1);
+ break;
+#endif
+#ifdef HAVE_BT3
+ case LZMA_MF_BT3:
+ lz->get_matches = &lzma_bt3_get_matches;
+ lz->skip = &lzma_bt3_skip;
+ lz->cut_value = 16 + (match_max_len >> 1);
+ break;
+#endif
+#ifdef HAVE_BT4
+ case LZMA_MF_BT4:
+ lz->get_matches = &lzma_bt4_get_matches;
+ lz->skip = &lzma_bt4_skip;
+ lz->cut_value = 16 + (match_max_len >> 1);
+ break;
+#endif
+ default:
+ lzma_lz_encoder_end(lz, allocator);
+ return LZMA_HEADER_ERROR;
+ }
+
+ // Check if we have been requested to use a non-default cut_value.
+ if (match_finder_cycles > 0)
+ lz->cut_value = match_finder_cycles;
+
+ lz->match_max_len = match_max_len;
+ lz->cyclic_buffer_size = get_cyclic_buffer_size(history_size);
+
+ uint32_t hash_size_sum;
+ uint32_t num_items;
+ if (lzma_lz_encoder_hash_properties(match_finder, history_size,
+ &lz->hash_mask, &hash_size_sum, &num_items)) {
+ lzma_lz_encoder_end(lz, allocator);
+ return LZMA_HEADER_ERROR;
+ }
+
+ if (num_items != lz->num_items) {
+#if UINT32_MAX >= SIZE_MAX / 4
+ // Check for integer overflow. (Huge dictionaries are not
+ // possible on 32-bit CPU.)
+ if (num_items > SIZE_MAX / sizeof(uint32_t)) {
+ lzma_lz_encoder_end(lz, allocator);
+ return LZMA_MEM_ERROR;
+ }
+#endif
+
+ const size_t size_in_bytes
+ = (size_t)(num_items) * sizeof(uint32_t);
+
+ lzma_free(lz->hash, allocator);
+ lz->hash = lzma_alloc(size_in_bytes, allocator);
+ if (lz->hash == NULL) {
+ lzma_lz_encoder_end(lz, allocator);
+ return LZMA_MEM_ERROR;
+ }
+
+ lz->num_items = num_items;
+ }
+
+ lz->son = lz->hash + hash_size_sum;
+
+ // Reset the hash table to empty hash values.
+ {
+ uint32_t *restrict items = lz->hash;
+
+ for (uint32_t i = 0; i < hash_size_sum; ++i)
+ items[i] = EMPTY_HASH_VALUE;
+ }
+
+ lz->cyclic_buffer_pos = 0;
+
+ // Because zero is used as empty hash value, make the first byte
+ // appear at buffer[1 - offset].
+ ++lz->offset;
+
+ // If we are using a preset dictionary, read it now.
+ // TODO: This isn't implemented yet so return LZMA_HEADER_ERROR.
+ if (preset_dictionary != NULL && preset_dictionary_size > 0) {
+ lzma_lz_encoder_end(lz, allocator);
+ return LZMA_HEADER_ERROR;
+ }
+
+ // Set the process function pointer.
+ lz->process = process;
+
+ return LZMA_OK;
+}
+
+
+extern void
+lzma_lz_encoder_end(lzma_lz_encoder *lz, lzma_allocator *allocator)
+{
+ lzma_free(lz->hash, allocator);
+ lz->hash = NULL;
+ lz->num_items = 0;
+
+ lzma_free(lz->buffer, allocator);
+ lz->buffer = NULL;
+ lz->size = 0;
+
+ return;
+}
+
+
+/// \brief Moves the data in the input window to free space for new data
+///
+/// lz->buffer is a sliding input window, which keeps lz->keep_size_before
+/// bytes of input history available all the time. Now and then we need to
+/// "slide" the buffer to make space for the new data to the end of the
+/// buffer. At the same time, data older than keep_size_before is dropped.
+///
+static void
+move_window(lzma_lz_encoder *lz)
+{
+ // buffer[move_offset] will become buffer[0].
+ assert(lz->read_pos > lz->keep_size_after);
+ size_t move_offset = lz->read_pos - lz->keep_size_before;
+
+ // We need one additional byte, since move_pos() moves on 1 byte.
+ // TODO: Clean up? At least document more.
+ if (move_offset > 0)
+ --move_offset;
+
+ assert(lz->write_pos > move_offset);
+ const size_t move_size = lz->write_pos - move_offset;
+
+ assert(move_offset + move_size <= lz->size);
+
+ memmove(lz->buffer, lz->buffer + move_offset, move_size);
+
+ lz->offset += move_offset;
+ lz->read_pos -= move_offset;
+ lz->read_limit -= move_offset;
+ lz->write_pos -= move_offset;
+
+ return;
+}
+
+
+/// \brief Tries to fill the input window (lz->buffer)
+///
+/// If we are the last encoder in the chain, our input data is in in[].
+/// Otherwise we call the next filter in the chain to process in[] and
+/// write its output to lz->buffer.
+///
+/// This function must not be called once it has returned LZMA_STREAM_END.
+///
+static lzma_ret
+fill_window(lzma_coder *coder, lzma_allocator *allocator, const uint8_t *in,
+ size_t *in_pos, size_t in_size, lzma_action action)
+{
+ assert(coder->lz.read_pos <= coder->lz.write_pos);
+ lzma_ret ret;
+
+ // Move the sliding window if needed.
+ if (coder->lz.read_pos >= coder->lz.must_move_pos)
+ move_window(&coder->lz);
+
+ if (coder->next.code == NULL) {
+ // Not using a filter, simply memcpy() as much as possible.
+ bufcpy(in, in_pos, in_size, coder->lz.buffer,
+ &coder->lz.write_pos, coder->lz.size);
+
+ if (action == LZMA_FINISH && *in_pos == in_size)
+ ret = LZMA_STREAM_END;
+ else
+ ret = LZMA_OK;
+
+ } else {
+ ret = coder->next.code(coder->next.coder, allocator,
+ in, in_pos, in_size,
+ coder->lz.buffer, &coder->lz.write_pos,
+ coder->lz.size, action);
+ }
+
+ // If end of stream has been reached, we allow the encoder to process
+ // all the input (that is, read_pos is allowed to reach write_pos).
+ // Otherwise we keep keep_size_after bytes available as prebuffer.
+ if (ret == LZMA_STREAM_END) {
+ coder->lz.stream_end_was_reached = true;
+ coder->lz.read_limit = coder->lz.write_pos;
+
+ } else if (coder->lz.write_pos > coder->lz.keep_size_after) {
+ // This needs to be done conditionally, because if we got
+ // only little new input, there may be too little input
+ // to do any encoding yet.
+ coder->lz.read_limit = coder->lz.write_pos
+ - coder->lz.keep_size_after;
+ }
+
+ return ret;
+}
+
+
+extern lzma_ret
+lzma_lz_encode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size,
+ uint8_t *restrict out, size_t *restrict out_pos,
+ size_t out_size, lzma_action action)
+{
+ while (*out_pos < out_size
+ && (*in_pos < in_size || action == LZMA_FINISH)) {
+ // Fill the input window if there is no more usable data.
+ if (!coder->lz.stream_end_was_reached && coder->lz.read_pos
+ >= coder->lz.read_limit) {
+ const lzma_ret ret = fill_window(coder, allocator,
+ in, in_pos, in_size, action);
+ if (ret != LZMA_OK && ret != LZMA_STREAM_END)
+ return ret;
+ }
+
+ // Encode
+ if (coder->lz.process(coder, out, out_pos, out_size))
+ return LZMA_STREAM_END;
+ }
+
+ return LZMA_OK;
+}
+
+
+/// \brief Normalizes hash values
+///
+/// lzma_lz_normalize is called when lz->pos hits MAX_VAL_FOR_NORMALIZE,
+/// which currently happens once every 2 GiB of input data (to be exact,
+/// after the first 2 GiB it happens once every 2 GiB minus dictionary_size
+/// bytes). lz->pos is incremented by lzma_lz_move_pos().
+///
+/// lz->hash contains big amount of offsets relative to lz->buffer.
+/// The offsets are stored as uint32_t, which is the only reasonable
+/// datatype for these offsets; uint64_t would waste far too much RAM
+/// and uint16_t would limit the dictionary to 64 KiB (far too small).
+///
+/// When compressing files over 2 GiB, lz->buffer needs to be moved forward
+/// to avoid integer overflows. We scan the lz->hash array and fix every
+/// value to match the updated lz->buffer.
+extern void
+lzma_lz_encoder_normalize(lzma_lz_encoder *lz)
+{
+ const uint32_t subvalue = lz->read_pos - lz->cyclic_buffer_size;
+ assert(subvalue <= INT32_MAX);
+
+ {
+ const uint32_t num_items = lz->num_items;
+ uint32_t *restrict items = lz->hash;
+
+ for (uint32_t i = 0; i < num_items; ++i) {
+ // If the distance is greater than the dictionary
+ // size, we can simply mark the item as empty.
+ if (items[i] <= subvalue)
+ items[i] = EMPTY_HASH_VALUE;
+ else
+ items[i] -= subvalue;
+ }
+ }
+
+ // Update offset to match the new locations.
+ lz->offset -= subvalue;
+
+ return;
+}
diff --git a/src/liblzma/lz/lz_encoder.h b/src/liblzma/lz/lz_encoder.h
new file mode 100644
index 0000000..b39c88e
--- /dev/null
+++ b/src/liblzma/lz/lz_encoder.h
@@ -0,0 +1,161 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lz_encoder.h
+/// \brief LZ in window and match finder API
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZ_ENCODER_H
+#define LZMA_LZ_ENCODER_H
+
+#include "common.h"
+
+
+typedef struct lzma_lz_encoder_s lzma_lz_encoder;
+struct lzma_lz_encoder_s {
+ enum {
+ SEQ_INIT,
+ SEQ_RUN,
+ SEQ_FINISH,
+ SEQ_END
+ } sequence;
+
+ bool (*process)(lzma_coder *coder, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size);
+
+ lzma_vli uncompressed_size;
+
+ ///////////////
+ // In Window //
+ ///////////////
+
+ /// Pointer to buffer with data to be compressed
+ uint8_t *buffer;
+
+ /// Total size of the allocated buffer (that is, including all
+ /// the extra space)
+ size_t size;
+
+ /// Match finders store locations of matches using 32-bit integers.
+ /// To avoid adjusting several megabytes of integers every time the
+ /// input window is moved with move_window(), we only adjust the
+ /// offset of the buffer. Thus, buffer[match_finder_pos - offset]
+ /// is the byte pointed by match_finder_pos.
+ size_t offset;
+
+ /// buffer[read_pos] is the current byte.
+ size_t read_pos;
+
+ /// As long as read_pos is less than read_limit, there is enough
+ /// input available in buffer for at least one encoding loop.
+ ///
+ /// Because of the stateful API, read_limit may and will get greater
+ /// than read_pos quite often. This is taken into account when
+ /// calculating the value for keep_size_after.
+ size_t read_limit;
+
+ /// buffer[write_pos] is the first byte that doesn't contain valid
+ /// uncompressed data; that is, the next input byte will be copied
+ /// to buffer[write_pos].
+ size_t write_pos;
+
+ /// When read_pos >= must_move_pos, move_window() must be called
+ /// to make more space for the input data.
+ size_t must_move_pos;
+
+ /// Number of bytes that must be kept available in our input history.
+ /// That is, once keep_size_before bytes have been processed,
+ /// buffer[read_pos - keep_size_before] is the oldest byte that
+ /// must be available for reading.
+ size_t keep_size_before;
+
+ /// Number of bytes that must be kept in buffer after read_pos.
+ /// That is, read_pos <= write_pos - keep_size_after as long as
+ /// stream_end_was_reached is false (once it is true, read_pos
+ /// is allowed to reach write_pos).
+ size_t keep_size_after;
+
+ /// This is set to true once the last byte of the input data has
+ /// been copied to buffer.
+ bool stream_end_was_reached;
+
+ //////////////////
+ // Match Finder //
+ //////////////////
+
+ // Pointers to match finder functions
+ void (*get_matches)(lzma_lz_encoder *restrict lz,
+ uint32_t *restrict distances);
+ void (*skip)(lzma_lz_encoder *restrict lz, uint32_t num);
+
+ // Match finder data
+ uint32_t *hash; // TODO: Check if hash aliases son
+ uint32_t *son; // and add 'restrict' if possible.
+ uint32_t cyclic_buffer_pos;
+ uint32_t cyclic_buffer_size; // Must be dictionary_size + 1.
+ uint32_t hash_mask;
+ uint32_t cut_value;
+ uint32_t hash_size_sum;
+ uint32_t num_items;
+ uint32_t match_max_len;
+};
+
+
+#define LZMA_LZ_ENCODER_INIT \
+ (lzma_lz_encoder){ \
+ .buffer = NULL, \
+ .size = 0, \
+ .hash = NULL, \
+ .num_items = 0, \
+ }
+
+
+/// Calculates
+extern uint32_t lzma_lz_encoder_hash_properties(lzma_match_finder match_finder,
+ uint32_t history_size, uint32_t *restrict hash_mask,
+ uint32_t *restrict hash_size_sum,
+ uint32_t *restrict num_items);
+
+// NOTE: liblzma doesn't use callback API like LZMA SDK does. The caller
+// must make sure that keep_size_after is big enough for single encoding pass
+// i.e. keep_size_after >= maximum number of bytes possibly needed after
+// the current position between calls to lzma_lz_read().
+extern lzma_ret lzma_lz_encoder_reset(lzma_lz_encoder *lz,
+ lzma_allocator *allocator,
+ bool (*process)(lzma_coder *coder, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size),
+ lzma_vli uncompressed_size,
+ size_t history_size, size_t additional_buffer_before,
+ size_t match_max_len, size_t additional_buffer_after,
+ lzma_match_finder match_finder, uint32_t match_finder_cycles,
+ const uint8_t *preset_dictionary,
+ size_t preset_dictionary_size);
+
+/// Frees memory allocated for in window and match finder buffers.
+extern void lzma_lz_encoder_end(
+ lzma_lz_encoder *lz, lzma_allocator *allocator);
+
+extern lzma_ret lzma_lz_encode(lzma_coder *coder,
+ lzma_allocator *allocator lzma_attribute((unused)),
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action);
+
+/// This should not be called directly, but only via move_pos() macro.
+extern void lzma_lz_encoder_normalize(lzma_lz_encoder *lz);
+
+#endif
diff --git a/src/liblzma/lz/lz_encoder_private.h b/src/liblzma/lz/lz_encoder_private.h
new file mode 100644
index 0000000..638fcb2
--- /dev/null
+++ b/src/liblzma/lz/lz_encoder_private.h
@@ -0,0 +1,40 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lz_encoder_private.h
+/// \brief Private definitions for LZ encoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZ_ENCODER_PRIVATE_H
+#define LZMA_LZ_ENCODER_PRIVATE_H
+
+#include "lz_encoder.h"
+
+/// Value used to indicate unused slot
+#define EMPTY_HASH_VALUE 0
+
+/// When the dictionary and hash variables need to be adjusted to prevent
+/// integer overflows. Since we use uint32_t to store the offsets, half
+/// of it is the biggest safe limit.
+#define MAX_VAL_FOR_NORMALIZE (UINT32_MAX / 2)
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+ lzma_lz_encoder lz;
+};
+
+#endif
diff --git a/src/liblzma/lz/match_c.h b/src/liblzma/lz/match_c.h
new file mode 100644
index 0000000..6876638
--- /dev/null
+++ b/src/liblzma/lz/match_c.h
@@ -0,0 +1,401 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file match_c.h
+/// \brief Template for different match finders
+///
+/// This file is included by hc3.c, hc4, bt2.c, bt3.c and bt4.c. Each file
+/// sets slighly different #defines, resulting the different match finders.
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+//////////////
+// Includes //
+//////////////
+
+#include "check.h"
+
+
+///////////////
+// Constants //
+///////////////
+
+#define START_MAX_LEN 1
+
+#ifdef HASH_ARRAY_2
+# define NUM_HASH_DIRECT_BYTES 0
+# define HASH_2_SIZE (1 << 10)
+# ifdef HASH_ARRAY_3
+# define NUM_HASH_BYTES 4
+# define HASH_3_SIZE (1 << 16)
+# define HASH_3_OFFSET HASH_2_SIZE
+# define FIX_HASH_SIZE (HASH_2_SIZE + HASH_3_SIZE)
+# else
+# define NUM_HASH_BYTES 3
+# define FIX_HASH_SIZE HASH_2_SIZE
+# endif
+# define HASH_SIZE 0
+# define MIN_MATCH_CHECK NUM_HASH_BYTES
+#else
+# define NUM_HASH_DIRECT_BYTES 2
+# define NUM_HASH_BYTES 2
+# define HASH_SIZE (1 << (8 * NUM_HASH_BYTES))
+# define MIN_MATCH_CHECK (NUM_HASH_BYTES + 1)
+# define FIX_HASH_SIZE 0
+#endif
+
+
+////////////
+// Macros //
+////////////
+
+#ifdef HASH_ARRAY_2
+# ifdef HASH_ARRAY_3
+# define HASH_CALC() \
+ do { \
+ const uint32_t temp = lzma_crc32_table[0][ \
+ cur[0]] ^ cur[1]; \
+ hash_2_value = temp & (HASH_2_SIZE - 1); \
+ hash_3_value = (temp ^ ((uint32_t)(cur[2]) << 8)) \
+ & (HASH_3_SIZE - 1); \
+ hash_value = (temp ^ ((uint32_t)(cur[2]) << 8) \
+ ^ (lzma_crc32_table[0][cur[3]] << 5)) \
+ & lz->hash_mask; \
+ } while (0)
+# else
+# define HASH_CALC() \
+ do { \
+ const uint32_t temp = lzma_crc32_table[0][ \
+ cur[0]] ^ cur[1]; \
+ hash_2_value = temp & (HASH_2_SIZE - 1); \
+ hash_value = (temp ^ ((uint32_t)(cur[2]) << 8)) \
+ & lz->hash_mask; \
+ } while (0)
+# endif
+#else
+# define HASH_CALC() hash_value = cur[0] ^ ((uint32_t)(cur[1]) << 8)
+#endif
+
+
+// Moves the current read position forward by one byte. In LZMA SDK,
+// CLZInWindow::MovePos() can read more input data if needed, because of
+// the callback style API. In liblzma we must have ensured earlier, that
+// there is enough data available in lz->buffer.
+#define move_pos() \
+do { \
+ if (++lz->cyclic_buffer_pos == lz->cyclic_buffer_size) \
+ lz->cyclic_buffer_pos = 0; \
+ ++lz->read_pos; \
+ assert(lz->read_pos <= lz->write_pos); \
+ if (lz->read_pos == MAX_VAL_FOR_NORMALIZE) \
+ lzma_lz_encoder_normalize(lz); \
+} while (0)
+
+
+//////////////////////
+// Global constants //
+//////////////////////
+
+LZMA_HASH_SIZE(LZMA_MATCH_FINDER_NAME_UPPER) = HASH_SIZE;
+LZMA_FIX_HASH_SIZE(LZMA_MATCH_FINDER_NAME_UPPER) = FIX_HASH_SIZE;
+
+
+///////////////////
+// API functions //
+///////////////////
+
+LZMA_GET_MATCHES(LZMA_MATCH_FINDER_NAME_LOWER)
+{
+ uint32_t len_limit;
+ if (lz->read_pos + lz->match_max_len <= lz->write_pos) {
+ len_limit = lz->match_max_len;
+ } else {
+ assert(lz->stream_end_was_reached);
+ len_limit = lz->write_pos - lz->read_pos;
+ if (len_limit < MIN_MATCH_CHECK) {
+ distances[0] = 0;
+ move_pos();
+ return;
+ }
+ }
+
+ int32_t offset = 1;
+ const uint32_t match_min_pos
+ = lz->read_pos + lz->offset > lz->cyclic_buffer_size
+ ? lz->read_pos + lz->offset - lz->cyclic_buffer_size
+ : 0;
+ const uint8_t *cur = lz->buffer + lz->read_pos;
+ uint32_t max_len = START_MAX_LEN; // to avoid items for len < hash_size
+
+#ifdef HASH_ARRAY_2
+ uint32_t hash_2_value;
+# ifdef HASH_ARRAY_3
+ uint32_t hash_3_value;
+# endif
+#endif
+ uint32_t hash_value;
+ HASH_CALC();
+
+ uint32_t cur_match = lz->hash[FIX_HASH_SIZE + hash_value];
+#ifdef HASH_ARRAY_2
+ uint32_t cur_match2 = lz->hash[hash_2_value];
+# ifdef HASH_ARRAY_3
+ uint32_t cur_match3 = lz->hash[HASH_3_OFFSET + hash_3_value];
+# endif
+ lz->hash[hash_2_value] = lz->read_pos + lz->offset;
+
+ if (cur_match2 > match_min_pos) {
+ if (lz->buffer[cur_match2 - lz->offset] == cur[0]) {
+ max_len = 2;
+ distances[offset++] = 2;
+ distances[offset++] = lz->read_pos + lz->offset
+ - cur_match2 - 1;
+ }
+ }
+
+# ifdef HASH_ARRAY_3
+ lz->hash[HASH_3_OFFSET + hash_3_value] = lz->read_pos + lz->offset;
+ if (cur_match3 > match_min_pos) {
+ if (lz->buffer[cur_match3 - lz->offset] == cur[0]) {
+ if (cur_match3 == cur_match2)
+ offset -= 2;
+
+ max_len = 3;
+ distances[offset++] = 3;
+ distances[offset++] = lz->read_pos + lz->offset
+ - cur_match3 - 1;
+ cur_match2 = cur_match3;
+ }
+ }
+# endif
+
+ if (offset != 1 && cur_match2 == cur_match) {
+ offset -= 2;
+ max_len = START_MAX_LEN;
+ }
+#endif
+
+ lz->hash[FIX_HASH_SIZE + hash_value] = lz->read_pos + lz->offset;
+
+#ifdef IS_HASH_CHAIN
+ lz->son[lz->cyclic_buffer_pos] = cur_match;
+#else
+ uint32_t *ptr0 = lz->son + (lz->cyclic_buffer_pos << 1) + 1;
+ uint32_t *ptr1 = lz->son + (lz->cyclic_buffer_pos << 1);
+
+ uint32_t len0 = NUM_HASH_DIRECT_BYTES;
+ uint32_t len1 = NUM_HASH_DIRECT_BYTES;
+#endif
+
+#if NUM_HASH_DIRECT_BYTES != 0
+ if (cur_match > match_min_pos) {
+ if (lz->buffer[cur_match + NUM_HASH_DIRECT_BYTES - lz->offset]
+ != cur[NUM_HASH_DIRECT_BYTES]) {
+ max_len = NUM_HASH_DIRECT_BYTES;
+ distances[offset++] = NUM_HASH_DIRECT_BYTES;
+ distances[offset++] = lz->read_pos + lz->offset
+ - cur_match - 1;
+ }
+ }
+#endif
+
+ uint32_t count = lz->cut_value;
+
+ while (true) {
+ if (cur_match <= match_min_pos || count-- == 0) {
+#ifndef IS_HASH_CHAIN
+ *ptr0 = EMPTY_HASH_VALUE;
+ *ptr1 = EMPTY_HASH_VALUE;
+#endif
+ break;
+ }
+
+ const uint32_t delta = lz->read_pos + lz->offset - cur_match;
+ const uint32_t cyclic_pos = delta <= lz->cyclic_buffer_pos
+ ? lz->cyclic_buffer_pos - delta
+ : lz->cyclic_buffer_pos - delta
+ + lz->cyclic_buffer_size;
+ uint32_t *pair = lz->son +
+#ifdef IS_HASH_CHAIN
+ cyclic_pos;
+#else
+ (cyclic_pos << 1);
+#endif
+
+ const uint8_t *pb = lz->buffer + cur_match - lz->offset;
+ uint32_t len =
+#ifdef IS_HASH_CHAIN
+ NUM_HASH_DIRECT_BYTES;
+ if (pb[max_len] == cur[max_len])
+#else
+ MIN(len0, len1);
+#endif
+
+ if (pb[len] == cur[len]) {
+ while (++len != len_limit)
+ if (pb[len] != cur[len])
+ break;
+
+ if (max_len < len) {
+ max_len = len;
+ distances[offset++] = len;
+ distances[offset++] = delta - 1;
+ if (len == len_limit) {
+#ifndef IS_HASH_CHAIN
+ *ptr1 = pair[0];
+ *ptr0 = pair[1];
+#endif
+ break;
+ }
+ }
+ }
+
+#ifdef IS_HASH_CHAIN
+ cur_match = *pair;
+#else
+ if (pb[len] < cur[len]) {
+ *ptr1 = cur_match;
+ ptr1 = pair + 1;
+ cur_match = *ptr1;
+ len1 = len;
+ } else {
+ *ptr0 = cur_match;
+ ptr0 = pair;
+ cur_match = *ptr0;
+ len0 = len;
+ }
+#endif
+ }
+
+ distances[0] = offset - 1;
+
+ move_pos();
+
+ return;
+}
+
+
+LZMA_SKIP(LZMA_MATCH_FINDER_NAME_LOWER)
+{
+ do {
+#ifdef IS_HASH_CHAIN
+ if (lz->write_pos - lz->read_pos < NUM_HASH_BYTES) {
+ move_pos();
+ continue;
+ }
+#else
+ uint32_t len_limit;
+ if (lz->read_pos + lz->match_max_len <= lz->write_pos) {
+ len_limit = lz->match_max_len;
+ } else {
+ assert(lz->stream_end_was_reached == true);
+ len_limit = lz->write_pos - lz->read_pos;
+ if (len_limit < MIN_MATCH_CHECK) {
+ move_pos();
+ continue;
+ }
+ }
+ const uint32_t match_min_pos
+ = lz->read_pos + lz->offset > lz->cyclic_buffer_size
+ ? lz->read_pos + lz->offset - lz->cyclic_buffer_size
+ : 0;
+#endif
+
+ const uint8_t *cur = lz->buffer + lz->read_pos;
+
+#ifdef HASH_ARRAY_2
+ uint32_t hash_2_value;
+# ifdef HASH_ARRAY_3
+ uint32_t hash_3_value;
+ uint32_t hash_value;
+ HASH_CALC();
+ lz->hash[HASH_3_OFFSET + hash_3_value]
+ = lz->read_pos + lz->offset;
+# else
+ uint32_t hash_value;
+ HASH_CALC();
+# endif
+ lz->hash[hash_2_value] = lz->read_pos + lz->offset;
+#else
+ uint32_t hash_value;
+ HASH_CALC();
+#endif
+
+ uint32_t cur_match = lz->hash[FIX_HASH_SIZE + hash_value];
+ lz->hash[FIX_HASH_SIZE + hash_value]
+ = lz->read_pos + lz->offset;
+
+#ifdef IS_HASH_CHAIN
+ lz->son[lz->cyclic_buffer_pos] = cur_match;
+#else
+ uint32_t *ptr0 = lz->son + (lz->cyclic_buffer_pos << 1) + 1;
+ uint32_t *ptr1 = lz->son + (lz->cyclic_buffer_pos << 1);
+
+ uint32_t len0 = NUM_HASH_DIRECT_BYTES;
+ uint32_t len1 = NUM_HASH_DIRECT_BYTES;
+ uint32_t count = lz->cut_value;
+
+ while (true) {
+ if (cur_match <= match_min_pos || count-- == 0) {
+ *ptr0 = EMPTY_HASH_VALUE;
+ *ptr1 = EMPTY_HASH_VALUE;
+ break;
+ }
+
+ const uint32_t delta = lz->read_pos
+ + lz->offset - cur_match;
+ const uint32_t cyclic_pos
+ = delta <= lz->cyclic_buffer_pos
+ ? lz->cyclic_buffer_pos - delta
+ : lz->cyclic_buffer_pos - delta
+ + lz->cyclic_buffer_size;
+ uint32_t *pair = lz->son + (cyclic_pos << 1);
+
+ const uint8_t *pb = lz->buffer + cur_match
+ - lz->offset;
+ uint32_t len = MIN(len0, len1);
+
+ if (pb[len] == cur[len]) {
+ while (++len != len_limit)
+ if (pb[len] != cur[len])
+ break;
+
+ if (len == len_limit) {
+ *ptr1 = pair[0];
+ *ptr0 = pair[1];
+ break;
+ }
+ }
+
+ if (pb[len] < cur[len]) {
+ *ptr1 = cur_match;
+ ptr1 = pair + 1;
+ cur_match = *ptr1;
+ len1 = len;
+ } else {
+ *ptr0 = cur_match;
+ ptr0 = pair;
+ cur_match = *ptr0;
+ len0 = len;
+ }
+ }
+#endif
+
+ move_pos();
+
+ } while (--num != 0);
+
+ return;
+}
diff --git a/src/liblzma/lz/match_h.h b/src/liblzma/lz/match_h.h
new file mode 100644
index 0000000..2eae90b
--- /dev/null
+++ b/src/liblzma/lz/match_h.h
@@ -0,0 +1,69 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file match_h.h
+/// \brief Header template for different match finders
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "lz_encoder_private.h"
+
+
+//////////////////////
+// Global constants //
+//////////////////////
+
+#undef LZMA_HASH_SIZE
+#undef LZMA_FIX_HASH_SIZE
+#undef LZMA_HASH_SIZE_C
+#undef LZMA_FIX_HASH_SIZE_C
+
+#define LZMA_HASH_SIZE(mf_name) LZMA_HASH_SIZE_C(mf_name)
+#define LZMA_FIX_HASH_SIZE(mf_name) LZMA_FIX_HASH_SIZE_C(mf_name)
+
+#define LZMA_HASH_SIZE_C(mf_name) \
+ const uint32_t LZMA_ ## mf_name ## _HASH_SIZE
+
+#define LZMA_FIX_HASH_SIZE_C(mf_name) \
+ const uint32_t LZMA_ ## mf_name ## _FIX_HASH_SIZE
+
+extern LZMA_HASH_SIZE(LZMA_MATCH_FINDER_NAME_UPPER);
+extern LZMA_FIX_HASH_SIZE(LZMA_MATCH_FINDER_NAME_UPPER);
+
+
+///////////////
+// Functions //
+///////////////
+
+#undef LZMA_GET_MATCHES
+#undef LZMA_SKIP
+#undef LZMA_GET_MATCHES_C
+#undef LZMA_SKIP_C
+
+#define LZMA_GET_MATCHES(mf_name) LZMA_GET_MATCHES_C(mf_name)
+#define LZMA_SKIP(mf_name) LZMA_SKIP_C(mf_name)
+
+#define LZMA_GET_MATCHES_C(mf_name) \
+ extern void lzma_ ## mf_name ## _get_matches( \
+ lzma_lz_encoder *restrict lz, \
+ uint32_t *restrict distances)
+
+#define LZMA_SKIP_C(mf_name) \
+ extern void lzma_ ## mf_name ## _skip( \
+ lzma_lz_encoder *lz, uint32_t num)
+
+LZMA_GET_MATCHES(LZMA_MATCH_FINDER_NAME_LOWER);
+
+LZMA_SKIP(LZMA_MATCH_FINDER_NAME_LOWER);
diff --git a/src/liblzma/lzma.pc.in b/src/liblzma/lzma.pc.in
new file mode 100644
index 0000000..5bf9bb1
--- /dev/null
+++ b/src/liblzma/lzma.pc.in
@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: liblzma
+Description: LZMA compression library
+URL: http://tukaani.org/lzma/
+Version: @PACKAGE_VERSION@
+Cflags: -I${includedir}
+Libs: -L${libdir} -llzma
diff --git a/src/liblzma/lzma/Makefile.am b/src/liblzma/lzma/Makefile.am
new file mode 100644
index 0000000..48f3bb2
--- /dev/null
+++ b/src/liblzma/lzma/Makefile.am
@@ -0,0 +1,43 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+noinst_LTLIBRARIES = liblzma4.la
+liblzma4_la_CPPFLAGS = \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_srcdir@/src/liblzma/common \
+ -I@top_srcdir@/src/liblzma/lz \
+ -I@top_srcdir@/src/liblzma/rangecoder
+
+liblzma4_la_SOURCES = \
+ lzma_common.h \
+ lzma_literal.c \
+ lzma_literal.h
+
+if COND_MAIN_ENCODER
+liblzma4_la_SOURCES += \
+ lzma_encoder.h \
+ lzma_encoder.c \
+ lzma_encoder_presets.c \
+ lzma_encoder_private.h \
+ lzma_encoder_init.c \
+ lzma_encoder_features.c \
+ lzma_encoder_getoptimum.c \
+ lzma_encoder_getoptimumfast.c
+endif
+
+if COND_MAIN_DECODER
+liblzma4_la_SOURCES += \
+ lzma_decoder.c \
+ lzma_decoder.h
+endif
diff --git a/src/liblzma/lzma/lzma_common.h b/src/liblzma/lzma/lzma_common.h
new file mode 100644
index 0000000..4ff59ae
--- /dev/null
+++ b/src/liblzma/lzma/lzma_common.h
@@ -0,0 +1,128 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_common.h
+/// \brief Private definitions common to LZMA encoder and decoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZMA_COMMON_H
+#define LZMA_LZMA_COMMON_H
+
+#include "common.h"
+#include "lzma_literal.h"
+#include "range_common.h"
+
+
+///////////////
+// Constants //
+///////////////
+
+#define REP_DISTANCES 4
+#define STATES 12
+#define LIT_STATES 7
+
+#define POS_SLOT_BITS 6
+#define DICT_LOG_SIZE_MAX 30
+#define DIST_TABLE_SIZE_MAX (DICT_LOG_SIZE_MAX * 2)
+#if (UINT32_C(1) << DICT_LOG_SIZE_MAX) != LZMA_DICTIONARY_SIZE_MAX
+# error DICT_LOG_SIZE_MAX is inconsistent with LZMA_DICTIONARY_SIZE_MAX
+#endif
+
+// 2 is for speed optimization
+#define LEN_TO_POS_STATES_BITS 2
+#define LEN_TO_POS_STATES (1 << LEN_TO_POS_STATES_BITS)
+
+#define MATCH_MIN_LEN 2
+
+#define ALIGN_BITS 4
+#define ALIGN_TABLE_SIZE (1 << ALIGN_BITS)
+#define ALIGN_MASK (ALIGN_TABLE_SIZE - 1)
+
+#define START_POS_MODEL_INDEX 4
+#define END_POS_MODEL_INDEX 14
+#define POS_MODELS (END_POS_MODEL_INDEX - START_POS_MODEL_INDEX)
+
+#define FULL_DISTANCES (1 << (END_POS_MODEL_INDEX / 2))
+
+#define LIT_POS_STATES_BITS_MAX LZMA_LITERAL_POS_BITS_MAX
+#define LIT_CONTEXT_BITS_MAX LZMA_LITERAL_CONTEXT_BITS_MAX
+
+#define POS_STATES_BITS_MAX LZMA_POS_BITS_MAX
+#define POS_STATES_MAX (1 << POS_STATES_BITS_MAX)
+
+
+// Length coder & Length price table encoder
+#define LEN_LOW_BITS 3
+#define LEN_LOW_SYMBOLS (1 << LEN_LOW_BITS)
+#define LEN_MID_BITS 3
+#define LEN_MID_SYMBOLS (1 << LEN_MID_BITS)
+#define LEN_HIGH_BITS 8
+#define LEN_HIGH_SYMBOLS (1 << LEN_HIGH_BITS)
+#define LEN_SYMBOLS (LEN_LOW_SYMBOLS + LEN_MID_SYMBOLS + LEN_HIGH_SYMBOLS)
+#define LEN_SPEC_SYMBOLS (LOW_LOW_SYMBOLS + LEN_MID_LEN_SYMBOLS)
+#define MATCH_MAX_LEN (MATCH_MIN_LEN + LEN_SYMBOLS - 1)
+
+// Total number of probs in a Len Encoder
+#define LEN_CODER_TOTAL_PROBS (LEN_HIGH_CODER + LEN_HIGH_SYMBOLS)
+
+// Price table size of Len Encoder
+#define LEN_PRICES (LEN_SYMBOLS << POS_STATES_BITS_MAX)
+
+
+// Optimal - Number of entries in the optimum array.
+#define OPTS (1 << 12)
+
+
+// Miscellaneous
+#define INFINITY_PRICE 0x0FFFFFFF
+
+
+////////////
+// Macros //
+////////////
+
+#define get_len_to_pos_state(len) \
+ ((len) < LEN_TO_POS_STATES + MATCH_MIN_LEN \
+ ? (len) - MATCH_MIN_LEN \
+ : LEN_TO_POS_STATES - 1)
+
+
+///////////
+// State //
+///////////
+
+// Used for updating strm->data->state in both encoder and decoder.
+
+#define update_char(index) \
+ index = ((index) < 4 \
+ ? 0 \
+ : ((index) < 10 \
+ ? (index) - 3 \
+ : (index) - 6))
+
+#define update_match(index) \
+ index = ((index) < LIT_STATES ? 7 : 10)
+
+#define update_rep(index) \
+ index = ((index) < LIT_STATES ? 8 : 11)
+
+#define update_short_rep(index) \
+ index = ((index) < LIT_STATES ? 9 : 11)
+
+#define is_char_state(index) \
+ ((index) < LIT_STATES)
+
+#endif
diff --git a/src/liblzma/lzma/lzma_decoder.c b/src/liblzma/lzma/lzma_decoder.c
new file mode 100644
index 0000000..6e2c166
--- /dev/null
+++ b/src/liblzma/lzma/lzma_decoder.c
@@ -0,0 +1,844 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_decoder.c
+/// \brief LZMA decoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "lzma_common.h"
+#include "lzma_decoder.h"
+#include "lz_decoder.h"
+#include "range_decoder.h"
+
+
+/// REQUIRED_IN_BUFFER_SIZE is the number of required input bytes
+/// for the worst case: longest match with longest distance.
+/// LZMA_IN_BUFFER_SIZE must be larger than REQUIRED_IN_BUFFER_SIZE.
+/// 23 bits = 2 (match select) + 10 (len) + 6 (distance) + 4 (align)
+/// + 1 (rc_normalize)
+///
+/// \todo Is this correct for sure?
+///
+#define REQUIRED_IN_BUFFER_SIZE \
+ ((23 * (BIT_MODEL_TOTAL_BITS - MOVE_BITS + 1) + 26 + 9) / 8)
+
+
+// Length decoders are easiest to have as macros, because they use range
+// decoder macros, which use local variables rc_range and rc_code.
+
+#define length_decode(target, len_decoder, pos_state) \
+do { \
+ if_bit_0(len_decoder.choice) { \
+ update_bit_0(len_decoder.choice); \
+ target = MATCH_MIN_LEN; \
+ bittree_decode(target, \
+ len_decoder.low[pos_state], LEN_LOW_BITS); \
+ } else { \
+ update_bit_1(len_decoder.choice); \
+ if_bit_0(len_decoder.choice2) { \
+ update_bit_0(len_decoder.choice2); \
+ target = MATCH_MIN_LEN + LEN_LOW_SYMBOLS; \
+ bittree_decode(target, len_decoder.mid[pos_state], \
+ LEN_MID_BITS); \
+ } else { \
+ update_bit_1(len_decoder.choice2); \
+ target = MATCH_MIN_LEN + LEN_LOW_SYMBOLS \
+ + LEN_MID_SYMBOLS; \
+ bittree_decode(target, len_decoder.high, \
+ LEN_HIGH_BITS); \
+ } \
+ } \
+} while (0)
+
+
+#define length_decode_dummy(target, len_decoder, pos_state) \
+do { \
+ if_bit_0(len_decoder.choice) { \
+ update_bit_0_dummy(); \
+ target = MATCH_MIN_LEN; \
+ bittree_decode_dummy(target, \
+ len_decoder.low[pos_state], LEN_LOW_BITS); \
+ } else { \
+ update_bit_1_dummy(); \
+ if_bit_0(len_decoder.choice2) { \
+ update_bit_0_dummy(); \
+ target = MATCH_MIN_LEN + LEN_LOW_SYMBOLS; \
+ bittree_decode_dummy(target, \
+ len_decoder.mid[pos_state], \
+ LEN_MID_BITS); \
+ } else { \
+ update_bit_1_dummy(); \
+ target = MATCH_MIN_LEN + LEN_LOW_SYMBOLS \
+ + LEN_MID_SYMBOLS; \
+ bittree_decode_dummy(target, len_decoder.high, \
+ LEN_HIGH_BITS); \
+ } \
+ } \
+} while (0)
+
+
+typedef struct {
+ probability choice;
+ probability choice2;
+ probability low[POS_STATES_MAX][LEN_LOW_SYMBOLS];
+ probability mid[POS_STATES_MAX][LEN_MID_SYMBOLS];
+ probability high[LEN_HIGH_SYMBOLS];
+} lzma_length_decoder;
+
+
+struct lzma_coder_s {
+ /// Data of the next coder, if any.
+ lzma_next_coder next;
+
+ /// Sliding output window a.k.a. dictionary a.k.a. history buffer.
+ lzma_lz_decoder lz;
+
+ // Range coder
+ lzma_range_decoder rc;
+
+ // State
+ uint32_t state;
+ uint32_t rep0; ///< Distance of the latest match
+ uint32_t rep1; ///< Distance of second latest match
+ uint32_t rep2; ///< Distance of third latest match
+ uint32_t rep3; ///< Distance of fourth latest match
+ uint32_t pos_bits;
+ uint32_t pos_mask;
+ uint32_t now_pos; // Lowest 32-bits are enough here.
+
+ lzma_literal_coder *literal_coder;
+
+ /// If 1, it's a match. Otherwise it's a single 8-bit literal.
+ probability is_match[STATES][POS_STATES_MAX];
+
+ /// If 1, it's a repeated match. The distance is one of rep0 .. rep3.
+ probability is_rep[STATES];
+
+ /// If 0, distance of a repeated match is rep0.
+ /// Otherwise check is_rep1.
+ probability is_rep0[STATES];
+
+ /// If 0, distance of a repeated match is rep1.
+ /// Otherwise check is_rep2.
+ probability is_rep1[STATES];
+
+ /// If 0, distance of a repeated match is rep2. Otherwise it is rep3.
+ probability is_rep2[STATES];
+
+ /// If 1, the repeated match has length of one byte. Otherwise
+ /// the length is decoded from rep_match_len_decoder.
+ probability is_rep0_long[STATES][POS_STATES_MAX];
+
+ probability pos_slot_decoder[LEN_TO_POS_STATES][1 << POS_SLOT_BITS];
+ probability pos_decoders[FULL_DISTANCES - END_POS_MODEL_INDEX];
+ probability pos_align_decoder[1 << ALIGN_BITS];
+
+ /// Length of a match
+ lzma_length_decoder len_decoder;
+
+ /// Length of a repeated match.
+ lzma_length_decoder rep_match_len_decoder;
+
+ /// The first five bytes of LZMA compressed data are treated
+ /// specially. Once they are read, this stays at zero.
+ size_t init_bytes_left;
+};
+
+
+/// \brief Check if the next iteration of the decoder loop can be run.
+///
+/// \note There must always be REQUIRED_IN_BUFFER_SIZE bytes
+/// readable space!
+///
+static bool lzma_attribute((pure))
+decode_dummy(const lzma_coder *restrict coder,
+ const uint8_t *restrict in, size_t in_pos_local,
+ const size_t in_size, uint32_t rc_range, uint32_t rc_code,
+ uint32_t state, uint32_t rep0, const uint32_t now_pos)
+{
+ uint32_t rc_bound;
+
+ do {
+ const uint32_t pos_state = now_pos & coder->pos_mask;
+
+ if_bit_0(coder->is_match[state][pos_state]) {
+ // It's a literal i.e. a single 8-bit byte.
+
+ update_bit_0_dummy();
+
+ const probability *subcoder = literal_get_subcoder(
+ coder->literal_coder,
+ now_pos, lz_get_byte(coder->lz, 0));
+ uint32_t symbol = 1;
+
+ if (!is_char_state(state)) {
+ // Decode literal with match byte.
+
+ assert(rep0 != UINT32_MAX);
+ uint32_t match_byte
+ = lz_get_byte(coder->lz, rep0);
+
+ do {
+ match_byte <<= 1;
+ const uint32_t match_bit
+ = match_byte & 0x100;
+ const uint32_t subcoder_index = 0x100
+ + match_bit + symbol;
+
+ if_bit_0(subcoder[subcoder_index]) {
+ update_bit_0_dummy();
+ symbol <<= 1;
+ if (match_bit != 0)
+ break;
+ } else {
+ update_bit_1_dummy();
+ symbol = (symbol << 1) | 1;
+ if (match_bit == 0)
+ break;
+ }
+ } while (symbol < 0x100);
+ }
+
+ // Decode literal without match byte. This is also
+ // the tail of the with-match-byte function.
+ while (symbol < 0x100) {
+ if_bit_0(subcoder[symbol]) {
+ update_bit_0_dummy();
+ symbol <<= 1;
+ } else {
+ update_bit_1_dummy();
+ symbol = (symbol << 1) | 1;
+ }
+ }
+
+ break;
+ }
+
+ update_bit_1_dummy();
+ uint32_t len;
+
+ if_bit_0(coder->is_rep[state]) {
+ update_bit_0_dummy();
+ length_decode_dummy(len, coder->len_decoder, pos_state);
+ update_match(state);
+
+ const uint32_t len_to_pos_state
+ = get_len_to_pos_state(len);
+ uint32_t pos_slot = 0;
+ bittree_decode_dummy(pos_slot, coder->pos_slot_decoder[
+ len_to_pos_state], POS_SLOT_BITS);
+ assert(pos_slot <= 63);
+
+ if (pos_slot >= START_POS_MODEL_INDEX) {
+ uint32_t direct_bits = (pos_slot >> 1) - 1;
+ assert(direct_bits >= 1 && direct_bits <= 31);
+ rep0 = 2 | (pos_slot & 1);
+
+ if (pos_slot < END_POS_MODEL_INDEX) {
+ assert(direct_bits <= 5);
+ rep0 <<= direct_bits;
+ assert(rep0 <= 96);
+ // -1 is fine, because
+ // bittree_reverse_decode()
+ // starts from table index [1]
+ // (not [0]).
+ assert((int32_t)(rep0 - pos_slot - 1)
+ >= -1);
+ assert((int32_t)(rep0 - pos_slot - 1)
+ <= 82);
+ // We add the result to rep0, so rep0
+ // must not be part of second argument
+ // of the macro.
+ const int32_t offset
+ = rep0 - pos_slot - 1;
+ bittree_reverse_decode_dummy(
+ coder->pos_decoders + offset,
+ direct_bits);
+ } else {
+ // Decode direct bits
+ assert(pos_slot >= 14);
+ assert(direct_bits >= 6);
+ direct_bits -= ALIGN_BITS;
+ assert(direct_bits >= 2);
+ do {
+ rc_normalize();
+ rc_range >>= 1;
+ const uint32_t t
+ = (rc_code - rc_range)
+ >> 31;
+ rc_code -= rc_range & (t - 1);
+ } while (--direct_bits > 0);
+ rep0 <<= ALIGN_BITS;
+
+ bittree_reverse_decode_dummy(
+ coder->pos_align_decoder,
+ ALIGN_BITS);
+ }
+ }
+
+ } else {
+ update_bit_1_dummy();
+
+ if_bit_0(coder->is_rep0[state]) {
+ update_bit_0_dummy();
+
+ if_bit_0(coder->is_rep0_long[state][
+ pos_state]) {
+ update_bit_0_dummy();
+ break;
+ } else {
+ update_bit_1_dummy();
+ }
+
+ } else {
+ update_bit_1_dummy();
+
+ if_bit_0(coder->is_rep1[state]) {
+ update_bit_0_dummy();
+ } else {
+ update_bit_1_dummy();
+
+ if_bit_0(coder->is_rep2[state]) {
+ update_bit_0_dummy();
+ } else {
+ update_bit_1_dummy();
+ }
+ }
+ }
+
+ length_decode_dummy(len, coder->rep_match_len_decoder,
+ pos_state);
+ }
+ } while (0);
+
+ rc_normalize();
+
+ // Validate the buffer position.
+ if (in_pos_local > in_size)
+ return false;
+
+ return true;
+}
+
+
+static bool
+decode_real(lzma_coder *restrict coder, const uint8_t *restrict in,
+ size_t *restrict in_pos, size_t in_size, bool has_safe_buffer)
+{
+ ////////////////////
+ // Initialization //
+ ////////////////////
+
+ while (coder->init_bytes_left > 0) {
+ if (*in_pos == in_size)
+ return false;
+
+ coder->rc.code = (coder->rc.code << 8) | in[*in_pos];
+ ++*in_pos;
+ --coder->init_bytes_left;
+ }
+
+
+ ///////////////
+ // Variables //
+ ///////////////
+
+ // Making local copies of often-used variables improves both
+ // speed and readability.
+
+ // Range decoder
+ rc_to_local(coder->rc);
+
+ // State
+ uint32_t state = coder->state;
+ uint32_t rep0 = coder->rep0;
+ uint32_t rep1 = coder->rep1;
+ uint32_t rep2 = coder->rep2;
+ uint32_t rep3 = coder->rep3;
+
+ // Misc
+ uint32_t now_pos = coder->now_pos;
+
+ // Variables derived from decoder settings
+ const uint32_t pos_mask = coder->pos_mask;
+
+ size_t in_pos_local = *in_pos; // Local copy
+ size_t in_limit;
+ if (in_size <= REQUIRED_IN_BUFFER_SIZE)
+ in_limit = 0;
+ else
+ in_limit = in_size - REQUIRED_IN_BUFFER_SIZE;
+
+
+ while (coder->lz.pos < coder->lz.limit && (in_pos_local < in_limit
+ || (has_safe_buffer && decode_dummy(
+ coder, in, in_pos_local, in_size,
+ rc_range, rc_code, state, rep0, now_pos)))) {
+
+ /////////////////////
+ // Actual decoding //
+ /////////////////////
+
+ const uint32_t pos_state = now_pos & pos_mask;
+
+ if_bit_0(coder->is_match[state][pos_state]) {
+ update_bit_0(coder->is_match[state][pos_state]);
+
+ // It's a literal i.e. a single 8-bit byte.
+
+ probability *subcoder = literal_get_subcoder(
+ coder->literal_coder,
+ now_pos, lz_get_byte(coder->lz, 0));
+ uint32_t symbol = 1;
+
+ if (!is_char_state(state)) {
+ // Decode literal with match byte.
+
+ assert(rep0 != UINT32_MAX);
+ uint32_t match_byte
+ = lz_get_byte(coder->lz, rep0);
+
+ do {
+ match_byte <<= 1;
+ const uint32_t match_bit
+ = match_byte & 0x100;
+ const uint32_t subcoder_index = 0x100
+ + match_bit + symbol;
+
+ if_bit_0(subcoder[subcoder_index]) {
+ update_bit_0(subcoder[
+ subcoder_index]);
+ symbol <<= 1;
+ if (match_bit != 0)
+ break;
+ } else {
+ update_bit_1(subcoder[
+ subcoder_index]);
+ symbol = (symbol << 1) | 1;
+ if (match_bit == 0)
+ break;
+ }
+ } while (symbol < 0x100);
+ }
+
+ // Decode literal without match byte. This is also
+ // the tail of the with-match-byte function.
+ while (symbol < 0x100) {
+ if_bit_0(subcoder[symbol]) {
+ update_bit_0(subcoder[symbol]);
+ symbol <<= 1;
+ } else {
+ update_bit_1(subcoder[symbol]);
+ symbol = (symbol << 1) | 1;
+ }
+ }
+
+ // Put the decoded byte to the dictionary, update the
+ // decoder state, and start a new decoding loop.
+ coder->lz.dict[coder->lz.pos++] = (uint8_t)(symbol);
+ ++now_pos;
+ update_char(state);
+ continue;
+ }
+
+ // Instead of a new byte we are going to get a byte range
+ // (distance and length) which will be repeated from our
+ // output history.
+
+ update_bit_1(coder->is_match[state][pos_state]);
+ uint32_t len;
+
+ if_bit_0(coder->is_rep[state]) {
+ update_bit_0(coder->is_rep[state]);
+
+ // Not a repeated match
+ //
+ // We will decode a new distance and store
+ // the value to rep0.
+
+ // The latest three match distances are kept in
+ // memory in case there are repeated matches.
+ rep3 = rep2;
+ rep2 = rep1;
+ rep1 = rep0;
+
+ // Decode the length of the match.
+ length_decode(len, coder->len_decoder, pos_state);
+
+ update_match(state);
+
+ const uint32_t len_to_pos_state
+ = get_len_to_pos_state(len);
+ uint32_t pos_slot = 0;
+ bittree_decode(pos_slot, coder->pos_slot_decoder[
+ len_to_pos_state], POS_SLOT_BITS);
+ assert(pos_slot <= 63);
+
+ if (pos_slot >= START_POS_MODEL_INDEX) {
+ uint32_t direct_bits = (pos_slot >> 1) - 1;
+ assert(direct_bits >= 1 && direct_bits <= 30);
+ rep0 = 2 | (pos_slot & 1);
+
+ if (pos_slot < END_POS_MODEL_INDEX) {
+ assert(direct_bits <= 5);
+ rep0 <<= direct_bits;
+ assert(rep0 <= 96);
+ // -1 is fine, because
+ // bittree_reverse_decode()
+ // starts from table index [1]
+ // (not [0]).
+ assert((int32_t)(rep0 - pos_slot - 1)
+ >= -1);
+ assert((int32_t)(rep0 - pos_slot - 1)
+ <= 82);
+ // We add the result to rep0, so rep0
+ // must not be part of second argument
+ // of the macro.
+ const int32_t offset
+ = rep0 - pos_slot - 1;
+ bittree_reverse_decode(rep0,
+ coder->pos_decoders + offset,
+ direct_bits);
+ } else {
+ // Decode direct bits
+ assert(pos_slot >= 14);
+ assert(direct_bits >= 6);
+ direct_bits -= ALIGN_BITS;
+ assert(direct_bits >= 2);
+ do {
+ rc_normalize();
+ rc_range >>= 1;
+ const uint32_t t
+ = (rc_code - rc_range)
+ >> 31;
+ rc_code -= rc_range & (t - 1);
+ rep0 = (rep0 << 1) | (1 - t);
+ } while (--direct_bits > 0);
+ rep0 <<= ALIGN_BITS;
+
+ bittree_reverse_decode(rep0,
+ coder->pos_align_decoder,
+ ALIGN_BITS);
+
+ if (rep0 == UINT32_MAX) {
+ // End of Payload Marker found.
+ coder->lz.eopm_detected = true;
+ break;
+ }
+ }
+ } else {
+ rep0 = pos_slot;
+ }
+
+ } else {
+ update_bit_1(coder->is_rep[state]);
+
+ // Repeated match
+ //
+ // The match distance is a value that we have had
+ // earlier. The latest four match distances are
+ // available as rep0, rep1, rep2 and rep3. We will
+ // now decode which of them is the new distance.
+
+ if_bit_0(coder->is_rep0[state]) {
+ update_bit_0(coder->is_rep0[state]);
+
+ // The distance is rep0.
+
+ if_bit_0(coder->is_rep0_long[state][
+ pos_state]) {
+ update_bit_0(coder->is_rep0_long[
+ state][pos_state]);
+
+ // Repeating exactly one byte. For
+ // simplicity, it is done here inline
+ // instead of at the end of the main
+ // loop.
+
+ update_short_rep(state);
+
+ // Security/sanity checks. See the end
+ // of the main loop for explanation
+ // of these.
+ if ((rep0 >= coder->lz.pos
+ && !coder->lz.is_full)
+ || in_pos_local
+ > in_size)
+ goto error;
+
+ // Repeat one byte and start a new
+ // decoding loop.
+ coder->lz.dict[coder->lz.pos]
+ = lz_get_byte(
+ coder->lz, rep0);
+ ++coder->lz.pos;
+ ++now_pos;
+ continue;
+
+ } else {
+ update_bit_1(coder->is_rep0_long[
+ state][pos_state]);
+
+ // Repeating more than one byte at
+ // distance of rep0.
+ }
+
+ } else {
+ update_bit_1(coder->is_rep0[state]);
+
+ // The distance is rep1, rep2 or rep3. Once
+ // we find out which one of these three, it
+ // is stored to rep0 and rep1, rep2 and rep3
+ // are updated accordingly.
+
+ uint32_t distance;
+
+ if_bit_0(coder->is_rep1[state]) {
+ update_bit_0(coder->is_rep1[state]);
+ distance = rep1;
+ } else {
+ update_bit_1(coder->is_rep1[state]);
+
+ if_bit_0(coder->is_rep2[state]) {
+ update_bit_0(coder->is_rep2[
+ state]);
+ distance = rep2;
+ } else {
+ update_bit_1(coder->is_rep2[
+ state]);
+ distance = rep3;
+ rep3 = rep2;
+ }
+
+ rep2 = rep1;
+ }
+
+ rep1 = rep0;
+ rep0 = distance;
+ }
+
+ // Decode the length of the repeated match.
+ length_decode(len, coder->rep_match_len_decoder,
+ pos_state);
+
+ update_rep(state);
+ }
+
+
+ /////////////////////////////////
+ // Repeat from history buffer. //
+ /////////////////////////////////
+
+ // The length is always between these limits. There is no way
+ // to trigger the algorithm to set len outside this range.
+ assert(len >= MATCH_MIN_LEN);
+ assert(len <= MATCH_MAX_LEN);
+
+ now_pos += len;
+
+ // Validate the buffer position to avoid buffer overflows
+ // on corrupted input data.
+ if (in_pos_local > in_size)
+ goto error;
+
+ // Repeat len bytes from distance of rep0.
+ if (!lzma_lz_out_repeat(&coder->lz, rep0, len))
+ goto error;
+ }
+
+ rc_normalize();
+
+
+ /////////////////////////////////
+ // Update the *data structure. //
+ /////////////////////////////////
+
+ // Range decoder
+ rc_from_local(coder->rc);
+
+ // State
+ coder->state = state;
+ coder->rep0 = rep0;
+ coder->rep1 = rep1;
+ coder->rep2 = rep2;
+ coder->rep3 = rep3;
+
+ // Misc
+ coder->now_pos = now_pos;
+ *in_pos = in_pos_local;
+
+ return false;
+
+error:
+ return true;
+}
+
+
+static void
+lzma_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_lz_decoder_end(&coder->lz, allocator);
+ lzma_literal_end(&coder->literal_coder, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_lzma_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ // Validate pos_bits. Other options are validated by the
+ // respective initialization functions.
+ const lzma_options_lzma *options = filters[0].options;
+ if (options->pos_bits > LZMA_POS_BITS_MAX)
+ return LZMA_HEADER_ERROR;
+
+ // Allocate memory for the decoder if needed.
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ // Initialize variables so that we know later that we don't
+ // have an existing decoder initialized.
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ next->coder->lz = LZMA_LZ_DECODER_INIT;
+ next->coder->literal_coder = NULL;
+ }
+
+ // Store the pos_bits and calculate pos_mask.
+ next->coder->pos_bits = options->pos_bits;
+ next->coder->pos_mask = (1U << next->coder->pos_bits) - 1;
+
+ // Allocate (if needed) and initialize the literal decoder.
+ {
+ const lzma_ret ret = lzma_literal_init(
+ &next->coder->literal_coder, allocator,
+ options->literal_context_bits,
+ options->literal_pos_bits);
+ if (ret != LZMA_OK) {
+ lzma_free(next->coder, allocator);
+ next->coder = NULL;
+ return ret;
+ }
+ }
+
+ // Allocate and initialize the LZ decoder.
+ {
+ const lzma_ret ret = lzma_lz_decoder_reset(
+ &next->coder->lz, allocator, &decode_real,
+ filters[0].uncompressed_size,
+ options->dictionary_size, MATCH_MAX_LEN);
+ if (ret != LZMA_OK) {
+ lzma_literal_end(&next->coder->literal_coder,
+ allocator);
+ lzma_free(next->coder, allocator);
+ next->coder = NULL;
+ return ret;
+ }
+ }
+
+ // State
+ next->coder->state = 0;
+ next->coder->rep0 = 0;
+ next->coder->rep1 = 0;
+ next->coder->rep2 = 0;
+ next->coder->rep3 = 0;
+ next->coder->pos_bits = options->pos_bits;
+ next->coder->pos_mask = (1 << next->coder->pos_bits) - 1;
+ next->coder->now_pos = 0;
+ next->coder->init_bytes_left = 5;
+
+ // Range decoder
+ rc_reset(next->coder->rc);
+
+ // Bit and bittree decoders
+ for (uint32_t i = 0; i < STATES; ++i) {
+ for (uint32_t j = 0; j <= next->coder->pos_mask; ++j) {
+ bit_reset(next->coder->is_match[i][j]);
+ bit_reset(next->coder->is_rep0_long[i][j]);
+ }
+
+ bit_reset(next->coder->is_rep[i]);
+ bit_reset(next->coder->is_rep0[i]);
+ bit_reset(next->coder->is_rep1[i]);
+ bit_reset(next->coder->is_rep2[i]);
+ }
+
+ for (uint32_t i = 0; i < LEN_TO_POS_STATES; ++i)
+ bittree_reset(next->coder->pos_slot_decoder[i], POS_SLOT_BITS);
+
+ for (uint32_t i = 0; i < FULL_DISTANCES - END_POS_MODEL_INDEX; ++i)
+ bit_reset(next->coder->pos_decoders[i]);
+
+ bittree_reset(next->coder->pos_align_decoder, ALIGN_BITS);
+
+ // Len decoders (also bit/bittree)
+ const uint32_t num_pos_states = 1 << next->coder->pos_bits;
+ bit_reset(next->coder->len_decoder.choice);
+ bit_reset(next->coder->len_decoder.choice2);
+ bit_reset(next->coder->rep_match_len_decoder.choice);
+ bit_reset(next->coder->rep_match_len_decoder.choice2);
+
+ for (uint32_t pos_state = 0; pos_state < num_pos_states; ++pos_state) {
+ bittree_reset(next->coder->len_decoder.low[pos_state],
+ LEN_LOW_BITS);
+ bittree_reset(next->coder->len_decoder.mid[pos_state],
+ LEN_MID_BITS);
+
+ bittree_reset(next->coder->rep_match_len_decoder.low[
+ pos_state], LEN_LOW_BITS);
+ bittree_reset(next->coder->rep_match_len_decoder.mid[
+ pos_state], LEN_MID_BITS);
+ }
+
+ bittree_reset(next->coder->len_decoder.high, LEN_HIGH_BITS);
+ bittree_reset(next->coder->rep_match_len_decoder.high, LEN_HIGH_BITS);
+
+ // Initialize the next decoder in the chain, if any.
+ {
+ const lzma_ret ret = lzma_next_filter_init(&next->coder->next,
+ allocator, filters + 1);
+ if (ret != LZMA_OK) {
+ lzma_decoder_end(next->coder, allocator);
+ return ret;
+ }
+ }
+
+ // Initialization successful. Set the function pointers.
+ next->code = &lzma_lz_decode;
+ next->end = &lzma_decoder_end;
+
+ return LZMA_OK;
+}
+
+
+extern bool
+lzma_lzma_decode_properties(lzma_options_lzma *options, uint8_t byte)
+{
+ if (byte > (4 * 5 + 4) * 9 + 8)
+ return true;
+
+ // See the file format specification to understand this.
+ options->pos_bits = byte / (9 * 5);
+ byte -= options->pos_bits * 9 * 5;
+ options->literal_pos_bits = byte / 9;
+ options->literal_context_bits = byte - options->literal_pos_bits * 9;
+
+ return false;
+}
diff --git a/src/liblzma/lzma/lzma_decoder.h b/src/liblzma/lzma/lzma_decoder.h
new file mode 100644
index 0000000..929c2bf
--- /dev/null
+++ b/src/liblzma/lzma/lzma_decoder.h
@@ -0,0 +1,41 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_decoder.h
+/// \brief LZMA decoder API
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZMA_DECODER_H
+#define LZMA_LZMA_DECODER_H
+
+#include "common.h"
+
+
+/// \brief Allocates and initializes LZMA decoder
+extern lzma_ret lzma_lzma_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+/// \brief Decodes the LZMA Properties byte (lc/lp/pb)
+///
+/// \return true if error occorred, false on success
+///
+extern bool lzma_lzma_decode_properties(
+ lzma_options_lzma *options, uint8_t byte);
+
+// There is no public lzma_lzma_encode() because lzma_lz_encode() works
+// as a wrapper for it.
+
+#endif
diff --git a/src/liblzma/lzma/lzma_encoder.c b/src/liblzma/lzma/lzma_encoder.c
new file mode 100644
index 0000000..f9c1e3f
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder.c
@@ -0,0 +1,413 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder.c
+/// \brief LZMA encoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+// NOTE: If you want to keep the line length in 80 characters, set
+// tab width to 4 or less in your editor when editing this file.
+
+
+#include "lzma_encoder_private.h"
+
+
+////////////
+// Macros //
+////////////
+
+// These are as macros mostly because they use local range encoder variables.
+
+#define literal_encode(subcoder, symbol) \
+do { \
+ uint32_t context = 1; \
+ int i = 8; \
+ do { \
+ --i; \
+ const uint32_t bit = ((symbol) >> i) & 1; \
+ bit_encode(subcoder[context], bit); \
+ context = (context << 1) | bit; \
+ } while (i != 0); \
+} while (0)
+
+
+#define literal_encode_matched(subcoder, match_byte, symbol) \
+do { \
+ uint32_t context = 1; \
+ int i = 8; \
+ do { \
+ --i; \
+ uint32_t bit = ((symbol) >> i) & 1; \
+ const uint32_t match_bit = ((match_byte) >> i) & 1; \
+ const uint32_t subcoder_index = 0x100 + (match_bit << 8) + context; \
+ bit_encode(subcoder[subcoder_index], bit); \
+ context = (context << 1) | bit; \
+ if (match_bit != bit) { \
+ while (i != 0) { \
+ --i; \
+ bit = ((symbol) >> i) & 1; \
+ bit_encode(subcoder[context], bit); \
+ context = (context << 1) | bit; \
+ } \
+ break; \
+ } \
+ } while (i != 0); \
+} while (0)
+
+
+#define length_encode(length_encoder, symbol, pos_state, update_price) \
+do { \
+ \
+ if ((symbol) < LEN_LOW_SYMBOLS) { \
+ bit_encode_0((length_encoder).choice); \
+ bittree_encode((length_encoder).low[pos_state], \
+ LEN_LOW_BITS, symbol); \
+ } else { \
+ bit_encode_1((length_encoder).choice); \
+ if ((symbol) < LEN_LOW_SYMBOLS + LEN_MID_SYMBOLS) { \
+ bit_encode_0((length_encoder).choice2); \
+ bittree_encode((length_encoder).mid[pos_state], \
+ LEN_MID_BITS, \
+ (symbol) - LEN_LOW_SYMBOLS); \
+ } else { \
+ bit_encode_1((length_encoder).choice2); \
+ bittree_encode((length_encoder).high, LEN_HIGH_BITS, \
+ (symbol) - LEN_LOW_SYMBOLS \
+ - LEN_MID_SYMBOLS); \
+ } \
+ } \
+ if (update_price) \
+ if (--(length_encoder).counters[pos_state] == 0) \
+ lzma_length_encoder_update_table(&(length_encoder), pos_state); \
+} while (0)
+
+
+///////////////
+// Functions //
+///////////////
+
+/// \brief Updates price table of the length encoder
+///
+/// All all the other prices in LZMA, these are used by lzma_get_optimum().
+///
+extern void
+lzma_length_encoder_update_table(lzma_length_encoder *lencoder,
+ const uint32_t pos_state)
+{
+ const uint32_t num_symbols = lencoder->table_size;
+ const uint32_t a0 = bit_get_price_0(lencoder->choice);
+ const uint32_t a1 = bit_get_price_1(lencoder->choice);
+ const uint32_t b0 = a1 + bit_get_price_0(lencoder->choice2);
+ const uint32_t b1 = a1 + bit_get_price_1(lencoder->choice2);
+
+ uint32_t *prices = lencoder->prices[pos_state];
+ uint32_t i = 0;
+
+ for (i = 0; i < num_symbols && i < LEN_LOW_SYMBOLS; ++i) {
+ prices[i] = a0;
+ bittree_get_price(prices[i], lencoder->low[pos_state],
+ LEN_LOW_BITS, i);
+ }
+
+ for (; i < num_symbols && i < LEN_LOW_SYMBOLS + LEN_MID_SYMBOLS; ++i) {
+ prices[i] = b0;
+ bittree_get_price(prices[i], lencoder->mid[pos_state],
+ LEN_MID_BITS, i - LEN_LOW_SYMBOLS);
+ }
+
+ for (; i < num_symbols; ++i) {
+ prices[i] = b1;
+ bittree_get_price(prices[i], lencoder->high, LEN_HIGH_BITS,
+ i - LEN_LOW_SYMBOLS - LEN_MID_SYMBOLS);
+ }
+
+ lencoder->counters[pos_state] = num_symbols;
+
+ return;
+}
+
+
+/**
+ * \brief LZMA encoder
+ *
+ * \return true if end of stream was reached, false otherwise.
+ */
+extern bool
+lzma_lzma_encode(lzma_coder *coder, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size)
+{
+ // Flush the range encoder's temporary buffer to out[].
+ // Return immediatelly if not everything could be flushed.
+ if (rc_flush_buffer(&coder->rc, out, out_pos, out_size))
+ return false;
+
+ // Return immediatelly if we have already finished our work.
+ if (coder->lz.stream_end_was_reached
+ && coder->is_initialized
+ && coder->lz.read_pos == coder->lz.write_pos
+ && coder->additional_offset == 0)
+ return true;
+
+ // Local copies
+ rc_to_local(coder->rc);
+ size_t out_pos_local = *out_pos;
+ const uint32_t pos_mask = coder->pos_mask;
+ const bool best_compression = coder->best_compression;
+
+ // Initialize the stream if no data has been encoded yet.
+ if (!coder->is_initialized) {
+ if (coder->lz.read_pos == coder->lz.read_limit) {
+ // Cannot initialize, because there is no input data.
+ if (!coder->lz.stream_end_was_reached)
+ return false;
+
+ // If we get here, we are encoding an empty file.
+ // Initialization is skipped completely.
+ assert(coder->lz.write_pos == coder->lz.read_pos);
+
+ } else {
+ // Do the actual initialization.
+ uint32_t len;
+ uint32_t num_distance_pairs;
+ lzma_read_match_distances(coder, &len, &num_distance_pairs);
+
+ bit_encode_0(coder->is_match[coder->state][0]);
+ update_char(coder->state);
+
+ const uint8_t cur_byte = coder->lz.buffer[
+ coder->lz.read_pos - coder->additional_offset];
+ probability *subcoder = literal_get_subcoder(coder->literal_coder,
+ coder->now_pos, coder->previous_byte);
+ literal_encode(subcoder, cur_byte);
+
+ coder->previous_byte = cur_byte;
+ --coder->additional_offset;
+ ++coder->now_pos;
+
+ assert(coder->additional_offset == 0);
+ }
+
+ // Initialization is done (except if empty file).
+ coder->is_initialized = true;
+ }
+
+ // Encoding loop
+ while (true) {
+ // Check that there is free output space.
+ if (out_pos_local == out_size)
+ break;
+
+ assert(rc_buffer_size == 0);
+
+ // Check that there is some input to process.
+ if (coder->lz.read_pos >= coder->lz.read_limit) {
+ // If end of input has been reached, we must keep
+ // encoding until additional_offset becomes zero.
+ if (!coder->lz.stream_end_was_reached
+ || coder->additional_offset == 0)
+ break;
+ }
+
+ assert(coder->lz.read_pos <= coder->lz.write_pos);
+
+#ifndef NDEBUG
+ if (coder->lz.stream_end_was_reached) {
+ assert(coder->lz.read_limit == coder->lz.write_pos);
+ } else {
+ assert(coder->lz.read_limit + coder->lz.keep_size_after
+ == coder->lz.write_pos);
+ }
+#endif
+
+ const uint32_t pos_state = coder->now_pos & pos_mask;
+
+ uint32_t pos;
+ uint32_t len;
+
+ // Get optimal match (repeat position and length).
+ // Value ranges for pos:
+ // - [0, REP_DISTANCES): repeated match
+ // - [REP_DISTANCES, UINT32_MAX): match at (pos - REP_DISTANCES)
+ // - UINT32_MAX: not a match but a literal
+ // Value ranges for len:
+ // - [MATCH_MIN_LEN, MATCH_MAX_LEN]
+ if (best_compression)
+ lzma_get_optimum(coder, &pos, &len);
+ else
+ lzma_get_optimum_fast(coder, &pos, &len);
+
+ if (len == 1 && pos == UINT32_MAX) {
+ // It's a literal.
+ bit_encode_0(coder->is_match[coder->state][pos_state]);
+
+ const uint8_t cur_byte = coder->lz.buffer[
+ coder->lz.read_pos - coder->additional_offset];
+ probability *subcoder = literal_get_subcoder(coder->literal_coder,
+ coder->now_pos, coder->previous_byte);
+
+ if (is_char_state(coder->state)) {
+ literal_encode(subcoder, cur_byte);
+ } else {
+ const uint8_t match_byte = coder->lz.buffer[
+ coder->lz.read_pos
+ - coder->rep_distances[0] - 1
+ - coder->additional_offset];
+ literal_encode_matched(subcoder, match_byte, cur_byte);
+ }
+
+ update_char(coder->state);
+ coder->previous_byte = cur_byte;
+
+ } else {
+ // It's a match.
+ bit_encode_1(coder->is_match[coder->state][pos_state]);
+
+ if (pos < REP_DISTANCES) {
+ // It's a repeated match i.e. the same distance
+ // has been used earlier.
+ bit_encode_1(coder->is_rep[coder->state]);
+
+ if (pos == 0) {
+ bit_encode_0(coder->is_rep0[coder->state]);
+ const uint32_t symbol = (len == 1) ? 0 : 1;
+ bit_encode(coder->is_rep0_long[coder->state][pos_state],
+ symbol);
+ } else {
+ const uint32_t distance = coder->rep_distances[pos];
+ bit_encode_1(coder->is_rep0[coder->state]);
+
+ if (pos == 1) {
+ bit_encode_0(coder->is_rep1[coder->state]);
+ } else {
+ bit_encode_1(coder->is_rep1[coder->state]);
+ bit_encode(coder->is_rep2[coder->state], pos - 2);
+
+ if (pos == 3)
+ coder->rep_distances[3] = coder->rep_distances[2];
+
+ coder->rep_distances[2] = coder->rep_distances[1];
+ }
+
+ coder->rep_distances[1] = coder->rep_distances[0];
+ coder->rep_distances[0] = distance;
+ }
+
+ if (len == 1) {
+ update_short_rep(coder->state);
+ } else {
+ length_encode(coder->rep_match_len_encoder,
+ len - MATCH_MIN_LEN, pos_state,
+ best_compression);
+ update_rep(coder->state);
+ }
+
+ } else {
+ bit_encode_0(coder->is_rep[coder->state]);
+ update_match(coder->state);
+ length_encode(coder->len_encoder, len - MATCH_MIN_LEN,
+ pos_state, best_compression);
+ pos -= REP_DISTANCES;
+
+ const uint32_t pos_slot = get_pos_slot(pos);
+ const uint32_t len_to_pos_state = get_len_to_pos_state(len);
+ bittree_encode(coder->pos_slot_encoder[len_to_pos_state],
+ POS_SLOT_BITS, pos_slot);
+
+ if (pos_slot >= START_POS_MODEL_INDEX) {
+ const uint32_t footer_bits = (pos_slot >> 1) - 1;
+ const uint32_t base = (2 | (pos_slot & 1)) << footer_bits;
+ const uint32_t pos_reduced = pos - base;
+
+ if (pos_slot < END_POS_MODEL_INDEX) {
+ bittree_reverse_encode(
+ coder->pos_encoders + base - pos_slot - 1,
+ footer_bits, pos_reduced);
+ } else {
+ rc_encode_direct_bits(pos_reduced >> ALIGN_BITS,
+ footer_bits - ALIGN_BITS);
+ bittree_reverse_encode(coder->pos_align_encoder,
+ ALIGN_BITS, pos_reduced & ALIGN_MASK);
+ ++coder->align_price_count;
+ }
+ }
+
+ coder->rep_distances[3] = coder->rep_distances[2];
+ coder->rep_distances[2] = coder->rep_distances[1];
+ coder->rep_distances[1] = coder->rep_distances[0];
+ coder->rep_distances[0] = pos;
+ ++coder->match_price_count;
+ }
+
+ coder->previous_byte = coder->lz.buffer[
+ coder->lz.read_pos + len - 1
+ - coder->additional_offset];
+ }
+
+ assert(coder->additional_offset >= len);
+ coder->additional_offset -= len;
+ coder->now_pos += len;
+ }
+
+ // Check if everything is done.
+ bool all_done = false;
+ if (coder->lz.stream_end_was_reached
+ && coder->lz.read_pos == coder->lz.write_pos
+ && coder->additional_offset == 0) {
+ // Write end of stream marker. It is encoded as a match with
+ // distance of UINT32_MAX. Match length is needed but it is
+ // ignored by the decoder.
+ if (coder->lz.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN) {
+ const uint32_t pos_state = coder->now_pos & pos_mask;
+ bit_encode_1(coder->is_match[coder->state][pos_state]);
+ bit_encode_0(coder->is_rep[coder->state]);
+ update_match(coder->state);
+
+ const uint32_t len = MATCH_MIN_LEN; // MATCH_MAX_LEN;
+ length_encode(coder->len_encoder, len - MATCH_MIN_LEN,
+ pos_state, best_compression);
+
+ const uint32_t pos_slot = (1 << POS_SLOT_BITS) - 1;
+ const uint32_t len_to_pos_state = get_len_to_pos_state(len);
+ bittree_encode(coder->pos_slot_encoder[len_to_pos_state],
+ POS_SLOT_BITS, pos_slot);
+
+ const uint32_t footer_bits = 30;
+ const uint32_t pos_reduced
+ = (UINT32_C(1) << footer_bits) - 1;
+ rc_encode_direct_bits(pos_reduced >> ALIGN_BITS,
+ footer_bits - ALIGN_BITS);
+
+ bittree_reverse_encode(coder->pos_align_encoder, ALIGN_BITS,
+ pos_reduced & ALIGN_MASK);
+ }
+
+ // Flush the last bytes of compressed data from
+ // the range coder to the output buffer.
+ rc_flush();
+
+ // All done. Note that some output bytes might be
+ // pending in coder->buffer. lzma_encode() will
+ // take care of those bytes.
+ if (rc_buffer_size == 0)
+ all_done = true;
+ }
+
+ // Store local variables back to *coder.
+ rc_from_local(coder->rc);
+ *out_pos = out_pos_local;
+
+ return all_done;
+}
diff --git a/src/liblzma/lzma/lzma_encoder.h b/src/liblzma/lzma/lzma_encoder.h
new file mode 100644
index 0000000..1c57f80
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder.h
@@ -0,0 +1,35 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder.h
+/// \brief LZMA method handler API
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZMA_ENCODER_H
+#define LZMA_LZMA_ENCODER_H
+
+#include "common.h"
+
+extern lzma_ret lzma_lzma_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern bool lzma_lzma_encode_properties(
+ const lzma_options_lzma *options, uint8_t *byte);
+
+/// Initializes the lzma_fastpos[] array.
+extern void lzma_fastpos_init(void);
+
+#endif
diff --git a/src/liblzma/lzma/lzma_encoder_features.c b/src/liblzma/lzma/lzma_encoder_features.c
new file mode 100644
index 0000000..56e59c6
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder_features.c
@@ -0,0 +1,59 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder_features.c
+/// \brief Information about features enabled at compile time
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+static lzma_mode modes[] = {
+ LZMA_MODE_FAST,
+ LZMA_MODE_BEST,
+ LZMA_MODE_INVALID
+};
+
+
+LZMA_API const lzma_mode *const lzma_available_modes = modes;
+
+
+static lzma_match_finder match_finders[] = {
+#ifdef HAVE_MF_HC3
+ LZMA_MF_HC3,
+#endif
+
+#ifdef HAVE_MF_HC4
+ LZMA_MF_HC4,
+#endif
+
+#ifdef HAVE_MF_BT2
+ LZMA_MF_BT2,
+#endif
+
+#ifdef HAVE_MF_BT3
+ LZMA_MF_BT3,
+#endif
+
+#ifdef HAVE_MF_BT4
+ LZMA_MF_BT4,
+#endif
+
+ LZMA_MF_INVALID
+};
+
+
+LZMA_API const lzma_match_finder *const lzma_available_match_finders
+ = match_finders;
diff --git a/src/liblzma/lzma/lzma_encoder_getoptimum.c b/src/liblzma/lzma/lzma_encoder_getoptimum.c
new file mode 100644
index 0000000..cdeb314
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder_getoptimum.c
@@ -0,0 +1,893 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder_getoptimum.c
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+// NOTE: If you want to keep the line length in 80 characters, set
+// tab width to 4 or less in your editor when editing this file.
+
+
+// "Would you love the monster code?
+// Could you understand beauty of the beast?"
+// --Adapted from Lordi's "Would you love a monster man".
+
+
+#include "lzma_encoder_private.h"
+
+
+#define length_get_price(length_encoder, symbol, pos_state) \
+ (length_encoder).prices[pos_state][symbol]
+
+
+#define get_rep_len_1_price(state, pos_state) \
+ bit_get_price_0(coder->is_rep0[state]) \
+ + bit_get_price_0(coder->is_rep0_long[state][pos_state])
+
+
+// Adds to price_target.
+#define get_pure_rep_price(price_target, rep_index, state, pos_state) \
+do { \
+ if ((rep_index) == 0) { \
+ price_target += bit_get_price_0(coder->is_rep0[state]); \
+ price_target += bit_get_price_1( \
+ coder->is_rep0_long[state][pos_state]); \
+ } else { \
+ price_target += bit_get_price_1(coder->is_rep0[state]); \
+ if ((rep_index) == 1) { \
+ price_target += bit_get_price_0(coder->is_rep1[state]); \
+ } else { \
+ price_target += bit_get_price_1(coder->is_rep1[state]); \
+ price_target += bit_get_price( \
+ coder->is_rep2[state], (rep_index) - 2); \
+ } \
+ } \
+} while (0)
+
+
+// Adds to price_target.
+#define get_rep_price(price_target, rep_index, len, state, pos_state) \
+do { \
+ get_pure_rep_price(price_target, rep_index, state, pos_state); \
+ price_target += length_get_price(coder->rep_match_len_encoder, \
+ (len) - MATCH_MIN_LEN, pos_state); \
+} while (0)
+
+
+// Adds to price_target.
+#define get_pos_len_price(price_target, pos, len, pos_state) \
+do { \
+ const uint32_t len_to_pos_state_tmp = get_len_to_pos_state(len); \
+ if ((pos) < FULL_DISTANCES) { \
+ price_target += distances_prices[len_to_pos_state_tmp][pos]; \
+ } else { \
+ price_target \
+ += pos_slot_prices[len_to_pos_state_tmp][get_pos_slot_2(pos)] \
+ + align_prices[(pos) & ALIGN_MASK]; \
+ } \
+ price_target += length_get_price( \
+ coder->len_encoder, (len) - MATCH_MIN_LEN, pos_state); \
+} while (0)
+
+
+// Three macros to manipulate lzma_optimal structures:
+#define make_as_char(opt) \
+do { \
+ (opt).back_prev = UINT32_MAX; \
+ (opt).prev_1_is_char = false; \
+} while (0)
+
+
+#define make_as_short_rep(opt) \
+do { \
+ (opt).back_prev = 0; \
+ (opt).prev_1_is_char = false; \
+} while (0)
+
+
+#define is_short_rep(opt) \
+ ((opt).back_prev == 0)
+
+
+static void
+fill_distances_prices(lzma_coder *coder)
+{
+ uint32_t temp_prices[FULL_DISTANCES];
+
+ for (uint32_t i = START_POS_MODEL_INDEX; i < FULL_DISTANCES; ++i) {
+ const uint32_t pos_slot = get_pos_slot(i);
+ const uint32_t footer_bits = ((pos_slot >> 1) - 1);
+ const uint32_t base = (2 | (pos_slot & 1)) << footer_bits;
+ temp_prices[i] = 0;
+ bittree_reverse_get_price(temp_prices[i],
+ coder->pos_encoders + base - pos_slot - 1,
+ footer_bits, i - base);
+ }
+
+ const uint32_t dist_table_size = coder->dist_table_size;
+
+ for (uint32_t len_to_pos_state = 0;
+ len_to_pos_state < LEN_TO_POS_STATES;
+ ++len_to_pos_state) {
+
+ const probability *encoder = coder->pos_slot_encoder[len_to_pos_state];
+ uint32_t *pos_slot_prices = coder->pos_slot_prices[len_to_pos_state];
+
+ for (uint32_t pos_slot = 0;
+ pos_slot < dist_table_size;
+ ++pos_slot) {
+ pos_slot_prices[pos_slot] = 0;
+ bittree_get_price(pos_slot_prices[pos_slot], encoder,
+ POS_SLOT_BITS, pos_slot);
+ }
+
+ for (uint32_t pos_slot = END_POS_MODEL_INDEX;
+ pos_slot < dist_table_size;
+ ++pos_slot)
+ pos_slot_prices[pos_slot] += (((pos_slot >> 1) - 1)
+ - ALIGN_BITS) << BIT_PRICE_SHIFT_BITS;
+
+
+ uint32_t *distances_prices
+ = coder->distances_prices[len_to_pos_state];
+
+ uint32_t i;
+ for (i = 0; i < START_POS_MODEL_INDEX; ++i)
+ distances_prices[i] = pos_slot_prices[i];
+
+ for (; i < FULL_DISTANCES; ++i)
+ distances_prices[i] = pos_slot_prices[get_pos_slot(i)]
+ + temp_prices[i];
+ }
+
+ coder->match_price_count = 0;
+
+ return;
+}
+
+
+static void
+fill_align_prices(lzma_coder *coder)
+{
+ for (uint32_t i = 0; i < ALIGN_TABLE_SIZE; ++i) {
+ uint32_t tmp = 0;
+ bittree_reverse_get_price(tmp, coder->pos_align_encoder,
+ ALIGN_BITS, i);
+ coder->align_prices[i] = tmp;
+ }
+
+ coder->align_price_count = 0;
+}
+
+
+// The first argument is a pointer returned by literal_get_subcoder().
+static uint32_t
+literal_get_price(const probability *encoders, const bool match_mode,
+ const uint8_t match_byte, const uint8_t symbol)
+{
+ uint32_t price = 0;
+ uint32_t context = 1;
+ int i = 8;
+
+ if (match_mode) {
+ do {
+ --i;
+ const uint32_t match_bit = (match_byte >> i) & 1;
+ const uint32_t bit = (symbol >> i) & 1;
+ const uint32_t subcoder_index
+ = 0x100 + (match_bit << 8) + context;
+
+ price += bit_get_price(encoders[subcoder_index], bit);
+ context = (context << 1) | bit;
+
+ if (match_bit != bit)
+ break;
+
+ } while (i != 0);
+ }
+
+ while (i != 0) {
+ --i;
+ const uint32_t bit = (symbol >> i) & 1;
+ price += bit_get_price(encoders[context], bit);
+ context = (context << 1) | bit;
+ }
+
+ return price;
+}
+
+
+static void
+backward(lzma_coder *restrict coder, uint32_t *restrict len_res,
+ uint32_t *restrict back_res, uint32_t cur)
+{
+ coder->optimum_end_index = cur;
+
+ uint32_t pos_mem = coder->optimum[cur].pos_prev;
+ uint32_t back_mem = coder->optimum[cur].back_prev;
+
+ do {
+ if (coder->optimum[cur].prev_1_is_char) {
+ make_as_char(coder->optimum[pos_mem]);
+ coder->optimum[pos_mem].pos_prev = pos_mem - 1;
+
+ if (coder->optimum[cur].prev_2) {
+ coder->optimum[pos_mem - 1].prev_1_is_char = false;
+ coder->optimum[pos_mem - 1].pos_prev
+ = coder->optimum[cur].pos_prev_2;
+ coder->optimum[pos_mem - 1].back_prev
+ = coder->optimum[cur].back_prev_2;
+ }
+ }
+
+ uint32_t pos_prev = pos_mem;
+ uint32_t back_cur = back_mem;
+
+ back_mem = coder->optimum[pos_prev].back_prev;
+ pos_mem = coder->optimum[pos_prev].pos_prev;
+
+ coder->optimum[pos_prev].back_prev = back_cur;
+ coder->optimum[pos_prev].pos_prev = cur;
+ cur = pos_prev;
+
+ } while (cur != 0);
+
+ coder->optimum_current_index = coder->optimum[0].pos_prev;
+ *len_res = coder->optimum[0].pos_prev;
+ *back_res = coder->optimum[0].back_prev;
+
+ return;
+}
+
+
+extern void
+lzma_get_optimum(lzma_coder *restrict coder,
+ uint32_t *restrict back_res, uint32_t *restrict len_res)
+{
+ // Update the price tables. In the C++ LZMA SDK 4.42 this was done in both
+ // initialization function and in the main loop. In liblzma they were
+ // moved into this single place.
+ if (coder->additional_offset == 0) {
+ if (coder->match_price_count >= (1 << 7))
+ fill_distances_prices(coder);
+
+ if (coder->align_price_count >= ALIGN_TABLE_SIZE)
+ fill_align_prices(coder);
+ }
+
+
+ if (coder->optimum_end_index != coder->optimum_current_index) {
+ *len_res = coder->optimum[coder->optimum_current_index].pos_prev
+ - coder->optimum_current_index;
+ *back_res = coder->optimum[coder->optimum_current_index].back_prev;
+ coder->optimum_current_index = coder->optimum[
+ coder->optimum_current_index].pos_prev;
+ return;
+ }
+
+ coder->optimum_current_index = 0;
+ coder->optimum_end_index = 0;
+
+
+ const uint32_t fast_bytes = coder->fast_bytes;
+ uint32_t *match_distances = coder->match_distances;
+
+ uint32_t len_main;
+ uint32_t num_distance_pairs;
+
+ if (!coder->longest_match_was_found) {
+ lzma_read_match_distances(coder, &len_main, &num_distance_pairs);
+ } else {
+ len_main = coder->longest_match_length;
+ num_distance_pairs = coder->num_distance_pairs;
+ coder->longest_match_was_found = false;
+ }
+
+
+ const uint8_t *buf = coder->lz.buffer + coder->lz.read_pos - 1;
+ uint32_t num_available_bytes
+ = coder->lz.write_pos - coder->lz.read_pos + 1;
+ if (num_available_bytes < 2) {
+ *back_res = UINT32_MAX;
+ *len_res = 1;
+ return;
+ }
+
+ if (num_available_bytes > MATCH_MAX_LEN)
+ num_available_bytes = MATCH_MAX_LEN;
+
+
+ uint32_t reps[REP_DISTANCES];
+ uint32_t rep_lens[REP_DISTANCES];
+ uint32_t rep_max_index = 0;
+
+ for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+ reps[i] = coder->rep_distances[i];
+ const uint32_t back_offset = reps[i] + 1;
+
+ if (buf[0] != *(buf - back_offset)
+ || buf[1] != *(buf + 1 - back_offset)) {
+ rep_lens[i] = 0;
+ continue;
+ }
+
+ uint32_t len_test;
+ for (len_test = 2; len_test < num_available_bytes
+ && buf[len_test] == *(buf + len_test - back_offset);
+ ++len_test) ;
+
+ rep_lens[i] = len_test;
+ if (len_test > rep_lens[rep_max_index])
+ rep_max_index = i;
+ }
+
+ if (rep_lens[rep_max_index] >= fast_bytes) {
+ *back_res = rep_max_index;
+ *len_res = rep_lens[rep_max_index];
+ move_pos(*len_res - 1);
+ return;
+ }
+
+
+ if (len_main >= fast_bytes) {
+ *back_res = match_distances[num_distance_pairs] + REP_DISTANCES;
+ *len_res = len_main;
+ move_pos(len_main - 1);
+ return;
+ }
+
+ uint8_t current_byte = *buf;
+ uint8_t match_byte = *(buf - reps[0] - 1);
+
+ if (len_main < 2 && current_byte != match_byte
+ && rep_lens[rep_max_index] < 2) {
+ *back_res = UINT32_MAX;
+ *len_res = 1;
+ return;
+ }
+
+ const uint32_t pos_mask = coder->pos_mask;
+
+ coder->optimum[0].state = coder->state;
+
+ uint32_t position = coder->now_pos;
+ uint32_t pos_state = (position & pos_mask);
+
+ coder->optimum[1].price = bit_get_price_0(
+ coder->is_match[coder->state][pos_state])
+ + literal_get_price(
+ literal_get_subcoder(coder->literal_coder,
+ position, coder->previous_byte),
+ !is_char_state(coder->state), match_byte, current_byte);
+
+ make_as_char(coder->optimum[1]);
+
+ uint32_t match_price
+ = bit_get_price_1(coder->is_match[coder->state][pos_state]);
+ uint32_t rep_match_price
+ = match_price + bit_get_price_1(coder->is_rep[coder->state]);
+
+
+ if (match_byte == current_byte) {
+ const uint32_t short_rep_price = rep_match_price
+ + get_rep_len_1_price(coder->state, pos_state);
+
+ if (short_rep_price < coder->optimum[1].price) {
+ coder->optimum[1].price = short_rep_price;
+ make_as_short_rep(coder->optimum[1]);
+ }
+ }
+
+ uint32_t len_end = (len_main >= rep_lens[rep_max_index])
+ ? len_main
+ : rep_lens[rep_max_index];
+
+ if (len_end < 2) {
+ *back_res = coder->optimum[1].back_prev;
+ *len_res = 1;
+ return;
+ }
+
+ coder->optimum[1].pos_prev = 0;
+
+ for (uint32_t i = 0; i < REP_DISTANCES; ++i)
+ coder->optimum[0].backs[i] = reps[i];
+
+ uint32_t len = len_end;
+ do {
+ coder->optimum[len].price = INFINITY_PRICE;
+ } while (--len >= 2);
+
+
+ uint32_t (*distances_prices)[FULL_DISTANCES] = coder->distances_prices;
+ uint32_t (*pos_slot_prices)[DIST_TABLE_SIZE_MAX] = coder->pos_slot_prices;
+ uint32_t *align_prices = coder->align_prices;
+
+ for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+ uint32_t rep_len = rep_lens[i];
+ if (rep_len < 2)
+ continue;
+
+ uint32_t price = rep_match_price;
+ get_pure_rep_price(price, i, coder->state, pos_state);
+
+ do {
+ const uint32_t cur_and_len_price = price
+ + length_get_price(
+ coder->rep_match_len_encoder,
+ rep_len - 2, pos_state);
+
+ if (cur_and_len_price < coder->optimum[rep_len].price) {
+ coder->optimum[rep_len].price = cur_and_len_price;
+ coder->optimum[rep_len].pos_prev = 0;
+ coder->optimum[rep_len].back_prev = i;
+ coder->optimum[rep_len].prev_1_is_char = false;
+ }
+ } while (--rep_len >= 2);
+ }
+
+
+ uint32_t normal_match_price = match_price
+ + bit_get_price_0(coder->is_rep[coder->state]);
+
+ len = (rep_lens[0] >= 2) ? rep_lens[0] + 1 : 2;
+
+ if (len <= len_main) {
+ uint32_t offs = 0;
+
+ while (len > match_distances[offs + 1])
+ offs += 2;
+
+ for(; ; ++len) {
+ const uint32_t distance = match_distances[offs + 2];
+ uint32_t cur_and_len_price = normal_match_price;
+ get_pos_len_price(cur_and_len_price, distance, len, pos_state);
+
+ if (cur_and_len_price < coder->optimum[len].price) {
+ coder->optimum[len].price = cur_and_len_price;
+ coder->optimum[len].pos_prev = 0;
+ coder->optimum[len].back_prev = distance + REP_DISTANCES;
+ coder->optimum[len].prev_1_is_char = false;
+ }
+
+ if (len == match_distances[offs + 1]) {
+ offs += 2;
+ if (offs == num_distance_pairs)
+ break;
+ }
+ }
+ }
+
+
+ //////////////////
+ // Big loop ;-) //
+ //////////////////
+
+ uint32_t cur = 0;
+
+ // The rest of this function is a huge while-loop. To avoid extreme
+ // indentation, the indentation level is not increased here.
+ while (true) {
+
+ ++cur;
+
+ assert(cur < OPTS);
+
+ if (cur == len_end) {
+ backward(coder, len_res, back_res, cur);
+ return;
+ }
+
+ uint32_t new_len;
+
+ lzma_read_match_distances(coder, &new_len, &num_distance_pairs);
+
+ if (new_len >= fast_bytes) {
+ coder->num_distance_pairs = num_distance_pairs;
+ coder->longest_match_length = new_len;
+ coder->longest_match_was_found = true;
+ backward(coder, len_res, back_res, cur);
+ return;
+ }
+
+
+ ++position;
+
+ uint32_t pos_prev = coder->optimum[cur].pos_prev;
+ uint32_t state;
+
+ if (coder->optimum[cur].prev_1_is_char) {
+ --pos_prev;
+
+ if (coder->optimum[cur].prev_2) {
+ state = coder->optimum[coder->optimum[cur].pos_prev_2].state;
+
+ if (coder->optimum[cur].back_prev_2 < REP_DISTANCES)
+ update_rep(state);
+ else
+ update_match(state);
+
+ } else {
+ state = coder->optimum[pos_prev].state;
+ }
+
+ update_char(state);
+
+ } else {
+ state = coder->optimum[pos_prev].state;
+ }
+
+ if (pos_prev == cur - 1) {
+ if (is_short_rep(coder->optimum[cur]))
+ update_short_rep(state);
+ else
+ update_char(state);
+ } else {
+ uint32_t pos;
+ if (coder->optimum[cur].prev_1_is_char && coder->optimum[cur].prev_2) {
+ pos_prev = coder->optimum[cur].pos_prev_2;
+ pos = coder->optimum[cur].back_prev_2;
+ update_rep(state);
+ } else {
+ pos = coder->optimum[cur].back_prev;
+ if (pos < REP_DISTANCES)
+ update_rep(state);
+ else
+ update_match(state);
+ }
+
+ if (pos < REP_DISTANCES) {
+ reps[0] = coder->optimum[pos_prev].backs[pos];
+
+ uint32_t i;
+ for (i = 1; i <= pos; ++i)
+ reps[i] = coder->optimum[pos_prev].backs[i - 1];
+
+ for (; i < REP_DISTANCES; ++i)
+ reps[i] = coder->optimum[pos_prev].backs[i];
+
+ } else {
+ reps[0] = pos - REP_DISTANCES;
+
+ for (uint32_t i = 1; i < REP_DISTANCES; ++i)
+ reps[i] = coder->optimum[pos_prev].backs[i - 1];
+ }
+ }
+
+ coder->optimum[cur].state = state;
+
+ for (uint32_t i = 0; i < REP_DISTANCES; ++i)
+ coder->optimum[cur].backs[i] = reps[i];
+
+ const uint32_t cur_price = coder->optimum[cur].price;
+
+ buf = coder->lz.buffer + coder->lz.read_pos - 1;
+ current_byte = *buf;
+ match_byte = *(buf - reps[0] - 1);
+
+ pos_state = position & pos_mask;
+
+ const uint32_t cur_and_1_price = cur_price
+ + bit_get_price_0(coder->is_match[state][pos_state])
+ + literal_get_price(
+ literal_get_subcoder(coder->literal_coder,
+ position, buf[-1]),
+ !is_char_state(state), match_byte, current_byte);
+
+ bool next_is_char = false;
+
+ if (cur_and_1_price < coder->optimum[cur + 1].price) {
+ coder->optimum[cur + 1].price = cur_and_1_price;
+ coder->optimum[cur + 1].pos_prev = cur;
+ make_as_char(coder->optimum[cur + 1]);
+ next_is_char = true;
+ }
+
+ match_price = cur_price
+ + bit_get_price_1(coder->is_match[state][pos_state]);
+ rep_match_price = match_price
+ + bit_get_price_1(coder->is_rep[state]);
+
+ if (match_byte == current_byte
+ && !(coder->optimum[cur + 1].pos_prev < cur
+ && coder->optimum[cur + 1].back_prev == 0)) {
+
+ const uint32_t short_rep_price = rep_match_price
+ + get_rep_len_1_price(state, pos_state);
+
+ if (short_rep_price <= coder->optimum[cur + 1].price) {
+ coder->optimum[cur + 1].price = short_rep_price;
+ coder->optimum[cur + 1].pos_prev = cur;
+ make_as_short_rep(coder->optimum[cur + 1]);
+ next_is_char = true;
+ }
+ }
+
+ uint32_t num_available_bytes_full
+ = coder->lz.write_pos - coder->lz.read_pos + 1;
+ num_available_bytes_full = MIN(OPTS - 1 - cur, num_available_bytes_full);
+ num_available_bytes = num_available_bytes_full;
+
+ if (num_available_bytes < 2)
+ continue;
+
+ if (num_available_bytes > fast_bytes)
+ num_available_bytes = fast_bytes;
+
+ if (!next_is_char && match_byte != current_byte) { // speed optimization
+ // try literal + rep0
+ const uint32_t back_offset = reps[0] + 1;
+ const uint32_t limit = MIN(num_available_bytes_full, fast_bytes + 1);
+
+ uint32_t temp;
+ for (temp = 1; temp < limit
+ && buf[temp] == *(buf + temp - back_offset);
+ ++temp) ;
+
+ const uint32_t len_test_2 = temp - 1;
+
+ if (len_test_2 >= 2) {
+ uint32_t state_2 = state;
+ update_char(state_2);
+
+ const uint32_t pos_state_next = (position + 1) & pos_mask;
+ const uint32_t next_rep_match_price = cur_and_1_price
+ + bit_get_price_1(coder->is_match[state_2][pos_state_next])
+ + bit_get_price_1(coder->is_rep[state_2]);
+
+ // for (; len_test_2 >= 2; --len_test_2) {
+ const uint32_t offset = cur + 1 + len_test_2;
+
+ while (len_end < offset)
+ coder->optimum[++len_end].price = INFINITY_PRICE;
+
+ uint32_t cur_and_len_price = next_rep_match_price;
+ get_rep_price(cur_and_len_price,
+ 0, len_test_2, state_2, pos_state_next);
+
+ if (cur_and_len_price < coder->optimum[offset].price) {
+ coder->optimum[offset].price = cur_and_len_price;
+ coder->optimum[offset].pos_prev = cur + 1;
+ coder->optimum[offset].back_prev = 0;
+ coder->optimum[offset].prev_1_is_char = true;
+ coder->optimum[offset].prev_2 = false;
+ }
+// }
+ }
+ }
+
+
+ uint32_t start_len = 2; // speed optimization
+
+ for (uint32_t rep_index = 0; rep_index < REP_DISTANCES; ++rep_index) {
+ const uint32_t back_offset = reps[rep_index] + 1;
+
+ if (buf[0] != *(buf - back_offset) || buf[1] != *(buf + 1 - back_offset))
+ continue;
+
+ uint32_t len_test;
+ for (len_test = 2; len_test < num_available_bytes
+ && buf[len_test] == *(buf + len_test - back_offset);
+ ++len_test) ;
+
+ while (len_end < cur + len_test)
+ coder->optimum[++len_end].price = INFINITY_PRICE;
+
+ const uint32_t len_test_temp = len_test;
+ uint32_t price = rep_match_price;
+ get_pure_rep_price(price, rep_index, state, pos_state);
+
+ do {
+ const uint32_t cur_and_len_price = price
+ + length_get_price(coder->rep_match_len_encoder,
+ len_test - 2, pos_state);
+
+ if (cur_and_len_price < coder->optimum[cur + len_test].price) {
+ coder->optimum[cur + len_test].price = cur_and_len_price;
+ coder->optimum[cur + len_test].pos_prev = cur;
+ coder->optimum[cur + len_test].back_prev = rep_index;
+ coder->optimum[cur + len_test].prev_1_is_char = false;
+ }
+ } while (--len_test >= 2);
+
+ len_test = len_test_temp;
+
+ if (rep_index == 0)
+ start_len = len_test + 1;
+
+
+ uint32_t len_test_2 = len_test + 1;
+ const uint32_t limit = MIN(num_available_bytes_full,
+ len_test_2 + fast_bytes);
+ for (; len_test_2 < limit
+ && buf[len_test_2] == *(buf + len_test_2 - back_offset);
+ ++len_test_2) ;
+
+ len_test_2 -= len_test + 1;
+
+ if (len_test_2 >= 2) {
+ uint32_t state_2 = state;
+ update_rep(state_2);
+
+ uint32_t pos_state_next = (position + len_test) & pos_mask;
+
+ const uint32_t cur_and_len_char_price = price
+ + length_get_price(coder->rep_match_len_encoder,
+ len_test - 2, pos_state)
+ + bit_get_price_0(coder->is_match[state_2][pos_state_next])
+ + literal_get_price(
+ literal_get_subcoder(coder->literal_coder,
+ position + len_test, buf[len_test - 1]),
+ true, *(buf + len_test - back_offset), buf[len_test]);
+
+ update_char(state_2);
+
+ pos_state_next = (position + len_test + 1) & pos_mask;
+
+ const uint32_t next_rep_match_price = cur_and_len_char_price
+ + bit_get_price_1(coder->is_match[state_2][pos_state_next])
+ + bit_get_price_1(coder->is_rep[state_2]);
+
+// for(; len_test_2 >= 2; len_test_2--) {
+ const uint32_t offset = cur + len_test + 1 + len_test_2;
+
+ while (len_end < offset)
+ coder->optimum[++len_end].price = INFINITY_PRICE;
+
+ uint32_t cur_and_len_price = next_rep_match_price;
+ get_rep_price(cur_and_len_price,
+ 0, len_test_2, state_2, pos_state_next);
+
+ if (cur_and_len_price < coder->optimum[offset].price) {
+ coder->optimum[offset].price = cur_and_len_price;
+ coder->optimum[offset].pos_prev = cur + len_test + 1;
+ coder->optimum[offset].back_prev = 0;
+ coder->optimum[offset].prev_1_is_char = true;
+ coder->optimum[offset].prev_2 = true;
+ coder->optimum[offset].pos_prev_2 = cur;
+ coder->optimum[offset].back_prev_2 = rep_index;
+ }
+// }
+ }
+ }
+
+
+// for (uint32_t len_test = 2; len_test <= new_len; ++len_test)
+ if (new_len > num_available_bytes) {
+ new_len = num_available_bytes;
+
+ for (num_distance_pairs = 0;
+ new_len > match_distances[num_distance_pairs + 1];
+ num_distance_pairs += 2) ;
+
+ match_distances[num_distance_pairs + 1] = new_len;
+ num_distance_pairs += 2;
+ }
+
+
+ if (new_len >= start_len) {
+ normal_match_price = match_price
+ + bit_get_price_0(coder->is_rep[state]);
+
+ while (len_end < cur + new_len)
+ coder->optimum[++len_end].price = INFINITY_PRICE;
+
+ uint32_t offs = 0;
+ while (start_len > match_distances[offs + 1])
+ offs += 2;
+
+ uint32_t cur_back = match_distances[offs + 2];
+ uint32_t pos_slot = get_pos_slot_2(cur_back);
+
+ for (uint32_t len_test = start_len; ; ++len_test) {
+ uint32_t cur_and_len_price = normal_match_price;
+ const uint32_t len_to_pos_state = get_len_to_pos_state(len_test);
+
+ if (cur_back < FULL_DISTANCES)
+ cur_and_len_price += distances_prices[
+ len_to_pos_state][cur_back];
+ else
+ cur_and_len_price += pos_slot_prices[
+ len_to_pos_state][pos_slot]
+ + align_prices[cur_back & ALIGN_MASK];
+
+ cur_and_len_price += length_get_price(coder->len_encoder,
+ len_test - MATCH_MIN_LEN, pos_state);
+
+ if (cur_and_len_price < coder->optimum[cur + len_test].price) {
+ coder->optimum[cur + len_test].price = cur_and_len_price;
+ coder->optimum[cur + len_test].pos_prev = cur;
+ coder->optimum[cur + len_test].back_prev
+ = cur_back + REP_DISTANCES;
+ coder->optimum[cur + len_test].prev_1_is_char = false;
+ }
+
+ if (len_test == match_distances[offs + 1]) {
+ // Try Match + Literal + Rep0
+ const uint32_t back_offset = cur_back + 1;
+ uint32_t len_test_2 = len_test + 1;
+ const uint32_t limit = MIN(num_available_bytes_full,
+ len_test_2 + fast_bytes);
+
+ for (; len_test_2 < limit &&
+ buf[len_test_2] == *(buf + len_test_2 - back_offset);
+ ++len_test_2) ;
+
+ len_test_2 -= len_test + 1;
+
+ if (len_test_2 >= 2) {
+ uint32_t state_2 = state;
+ update_match(state_2);
+ uint32_t pos_state_next
+ = (position + len_test) & pos_mask;
+
+ const uint32_t cur_and_len_char_price = cur_and_len_price
+ + bit_get_price_0(
+ coder->is_match[state_2][pos_state_next])
+ + literal_get_price(
+ literal_get_subcoder(
+ coder->literal_coder,
+ position + len_test,
+ buf[len_test - 1]),
+ true,
+ *(buf + len_test - back_offset),
+ buf[len_test]);
+
+ update_char(state_2);
+ pos_state_next = (pos_state_next + 1) & pos_mask;
+
+ const uint32_t next_rep_match_price
+ = cur_and_len_char_price
+ + bit_get_price_1(
+ coder->is_match[state_2][pos_state_next])
+ + bit_get_price_1(coder->is_rep[state_2]);
+
+ // for(; len_test_2 >= 2; --len_test_2) {
+ const uint32_t offset = cur + len_test + 1 + len_test_2;
+
+ while (len_end < offset)
+ coder->optimum[++len_end].price = INFINITY_PRICE;
+
+ cur_and_len_price = next_rep_match_price;
+ get_rep_price(cur_and_len_price,
+ 0, len_test_2, state_2, pos_state_next);
+
+ if (cur_and_len_price < coder->optimum[offset].price) {
+ coder->optimum[offset].price = cur_and_len_price;
+ coder->optimum[offset].pos_prev = cur + len_test + 1;
+ coder->optimum[offset].back_prev = 0;
+ coder->optimum[offset].prev_1_is_char = true;
+ coder->optimum[offset].prev_2 = true;
+ coder->optimum[offset].pos_prev_2 = cur;
+ coder->optimum[offset].back_prev_2
+ = cur_back + REP_DISTANCES;
+ }
+// }
+ }
+
+ offs += 2;
+ if (offs == num_distance_pairs)
+ break;
+
+ cur_back = match_distances[offs + 2];
+ if (cur_back >= FULL_DISTANCES)
+ pos_slot = get_pos_slot_2(cur_back);
+ }
+ }
+ }
+
+ } // Closes: while (true)
+}
diff --git a/src/liblzma/lzma/lzma_encoder_getoptimumfast.c b/src/liblzma/lzma/lzma_encoder_getoptimumfast.c
new file mode 100644
index 0000000..e6cee19
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder_getoptimumfast.c
@@ -0,0 +1,201 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder_getoptimumfast.c
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+// NOTE: If you want to keep the line length in 80 characters, set
+// tab width to 4 or less in your editor when editing this file.
+
+
+#include "lzma_encoder_private.h"
+
+
+#define change_pair(small_dist, big_dist) \
+ (((big_dist) >> 7) > (small_dist))
+
+
+extern void
+lzma_get_optimum_fast(lzma_coder *restrict coder,
+ uint32_t *restrict back_res, uint32_t *restrict len_res)
+{
+ // Local copies
+ const uint32_t fast_bytes = coder->fast_bytes;
+
+ uint32_t len_main;
+ uint32_t num_distance_pairs;
+ if (!coder->longest_match_was_found) {
+ lzma_read_match_distances(coder, &len_main, &num_distance_pairs);
+ } else {
+ len_main = coder->longest_match_length;
+ num_distance_pairs = coder->num_distance_pairs;
+ coder->longest_match_was_found = false;
+ }
+
+ const uint8_t *buf = coder->lz.buffer + coder->lz.read_pos - 1;
+ uint32_t num_available_bytes
+ = coder->lz.write_pos - coder->lz.read_pos + 1;
+
+ if (num_available_bytes < 2) {
+ // There's not enough input left to encode a match.
+ *back_res = UINT32_MAX;
+ *len_res = 1;
+ return;
+ }
+
+ if (num_available_bytes > MATCH_MAX_LEN)
+ num_available_bytes = MATCH_MAX_LEN;
+
+
+ // Look for repetitive matches; scan the previous four match distances
+ uint32_t rep_lens[REP_DISTANCES];
+ uint32_t rep_max_index = 0;
+
+ for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+ const uint32_t back_offset = coder->rep_distances[i] + 1;
+
+ // If the first two bytes (2 == MATCH_MIN_LEN) do not match,
+ // this rep_distance[i] is not useful. This is indicated
+ // using zero as the length of the repetitive match.
+ if (buf[0] != *(buf - back_offset)
+ || buf[1] != *(buf + 1 - back_offset)) {
+ rep_lens[i] = 0;
+ continue;
+ }
+
+ // The first two bytes matched.
+ // Calculate the length of the match.
+ uint32_t len;
+ for (len = 2; len < num_available_bytes
+ && buf[len] == *(buf + len - back_offset);
+ ++len) ;
+
+ // If we have found a repetitive match that is at least
+ // as long as fast_bytes, return it immediatelly.
+ if (len >= fast_bytes) {
+ *back_res = i;
+ *len_res = len;
+ move_pos(len - 1);
+ return;
+ }
+
+ rep_lens[i] = len;
+
+ // After this loop, rep_lens[rep_max_index] is the biggest
+ // value of all values in rep_lens[].
+ if (len > rep_lens[rep_max_index])
+ rep_max_index = i;
+ }
+
+
+ if (len_main >= fast_bytes) {
+ *back_res = coder->match_distances[num_distance_pairs]
+ + REP_DISTANCES;
+ *len_res = len_main;
+ move_pos(len_main - 1);
+ return;
+ }
+
+ uint32_t back_main = 0;
+ if (len_main >= 2) {
+ back_main = coder->match_distances[num_distance_pairs];
+
+ while (num_distance_pairs > 2 && len_main ==
+ coder->match_distances[num_distance_pairs - 3] + 1) {
+ if (!change_pair(coder->match_distances[
+ num_distance_pairs - 2], back_main))
+ break;
+
+ num_distance_pairs -= 2;
+ len_main = coder->match_distances[num_distance_pairs - 1];
+ back_main = coder->match_distances[num_distance_pairs];
+ }
+
+ if (len_main == 2 && back_main >= 0x80)
+ len_main = 1;
+ }
+
+ if (rep_lens[rep_max_index] >= 2) {
+ if (rep_lens[rep_max_index] + 1 >= len_main
+ || (rep_lens[rep_max_index] + 2 >= len_main
+ && (back_main > (1 << 9)))
+ || (rep_lens[rep_max_index] + 3 >= len_main
+ && (back_main > (1 << 15)))) {
+ *back_res = rep_max_index;
+ *len_res = rep_lens[rep_max_index];
+ move_pos(*len_res - 1);
+ return;
+ }
+ }
+
+ if (len_main >= 2 && num_available_bytes > 2) {
+ lzma_read_match_distances(coder, &coder->longest_match_length,
+ &coder->num_distance_pairs);
+
+ if (coder->longest_match_length >= 2) {
+ const uint32_t new_distance = coder->match_distances[
+ coder->num_distance_pairs];
+
+ if ((coder->longest_match_length >= len_main
+ && new_distance < back_main)
+ || (coder->longest_match_length == len_main + 1
+ && !change_pair(back_main, new_distance))
+ || (coder->longest_match_length > len_main + 1)
+ || (coder->longest_match_length + 1 >= len_main
+ && len_main >= 3
+ && change_pair(new_distance, back_main))) {
+ coder->longest_match_was_found = true;
+ *back_res = UINT32_MAX;
+ *len_res = 1;
+ return;
+ }
+ }
+
+ ++buf;
+ --num_available_bytes;
+
+ for (uint32_t i = 0; i < REP_DISTANCES; ++i) {
+ const uint32_t back_offset = coder->rep_distances[i] + 1;
+
+ if (buf[1] != *(buf + 1 - back_offset)
+ || buf[2] != *(buf + 2 - back_offset)) {
+ rep_lens[i] = 0;
+ continue;
+ }
+
+ uint32_t len;
+ for (len = 2; len < num_available_bytes
+ && buf[len] == *(buf + len - back_offset);
+ ++len) ;
+
+ if (len + 1 >= len_main) {
+ coder->longest_match_was_found = true;
+ *back_res = UINT32_MAX;
+ *len_res = 1;
+ return;
+ }
+ }
+
+ *back_res = back_main + REP_DISTANCES;
+ *len_res = len_main;
+ move_pos(len_main - 2);
+ return;
+ }
+
+ *back_res = UINT32_MAX;
+ *len_res = 1;
+ return;
+}
diff --git a/src/liblzma/lzma/lzma_encoder_init.c b/src/liblzma/lzma/lzma_encoder_init.c
new file mode 100644
index 0000000..d780752
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder_init.c
@@ -0,0 +1,245 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder_init.c
+/// \brief Creating, resetting and destroying the LZMA encoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "lzma_encoder_private.h"
+
+
+uint8_t lzma_fastpos[1 << 11];
+
+extern void
+lzma_fastpos_init(void)
+{
+ static const uint8_t fast_slots = 22;
+
+ int c = 2;
+ lzma_fastpos[0] = 0;
+ lzma_fastpos[1] = 1;
+
+ for (uint8_t slot_fast = 2; slot_fast < fast_slots; ++slot_fast) {
+ const uint32_t k = (1 << ((slot_fast >> 1) - 1));
+
+ for (uint32_t j = 0; j < k; ++j, ++c)
+ lzma_fastpos[c] = slot_fast;
+ }
+
+ return;
+}
+
+
+/// \brief Initializes the length encoder
+static void
+length_encoder_reset(lzma_length_encoder *lencoder,
+ const uint32_t num_pos_states, const uint32_t table_size)
+{
+ // NLength::CPriceTableEncoder::SetTableSize()
+ lencoder->table_size = table_size;
+
+ // NLength::CEncoder::Init()
+ bit_reset(lencoder->choice);
+ bit_reset(lencoder->choice2);
+
+ for (size_t pos_state = 0; pos_state < num_pos_states; ++pos_state) {
+ bittree_reset(lencoder->low[pos_state], LEN_LOW_BITS);
+ bittree_reset(lencoder->mid[pos_state], LEN_MID_BITS);
+ }
+
+ bittree_reset(lencoder->high, LEN_HIGH_BITS);
+
+ // NLength::CPriceTableEncoder::UpdateTables()
+ for (size_t pos_state = 0; pos_state < num_pos_states; ++pos_state)
+ lzma_length_encoder_update_table(lencoder, pos_state);
+
+ return;
+}
+
+
+static void
+lzma_lzma_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_lz_encoder_end(&coder->lz, allocator);
+ lzma_literal_end(&coder->literal_coder, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_lzma_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ next->coder->lz = LZMA_LZ_ENCODER_INIT;
+ next->coder->literal_coder = NULL;
+ }
+
+ // Validate options that aren't validated elsewhere.
+ const lzma_options_lzma *options = filters[0].options;
+ if (options->pos_bits > LZMA_POS_BITS_MAX
+ || options->fast_bytes < LZMA_FAST_BYTES_MIN
+ || options->fast_bytes > LZMA_FAST_BYTES_MAX) {
+ lzma_lzma_encoder_end(next->coder, allocator);
+ return LZMA_HEADER_ERROR;
+ }
+
+ // Set compression mode.
+ switch (options->mode) {
+ case LZMA_MODE_FAST:
+ next->coder->best_compression = false;
+ break;
+
+ case LZMA_MODE_BEST:
+ next->coder->best_compression = true;
+ break;
+
+ default:
+ lzma_lzma_encoder_end(next->coder, allocator);
+ return LZMA_HEADER_ERROR;
+ }
+
+ // Initialize literal coder.
+ {
+ const lzma_ret ret = lzma_literal_init(
+ &next->coder->literal_coder, allocator,
+ options->literal_context_bits,
+ options->literal_pos_bits);
+ if (ret != LZMA_OK) {
+ lzma_lzma_encoder_end(next->coder, allocator);
+ return ret;
+ }
+ }
+
+ // Initialize LZ encoder.
+ {
+ const lzma_ret ret = lzma_lz_encoder_reset(
+ &next->coder->lz, allocator, &lzma_lzma_encode,
+ filters[0].uncompressed_size,
+ options->dictionary_size, OPTS,
+ options->fast_bytes, MATCH_MAX_LEN + 1 + OPTS,
+ options->match_finder,
+ options->match_finder_cycles,
+ options->preset_dictionary,
+ options->preset_dictionary_size);
+ if (ret != LZMA_OK) {
+ lzma_lzma_encoder_end(next->coder, allocator);
+ return ret;
+ }
+ }
+
+ // Set dist_table_size.
+ {
+ // Round the dictionary size up to next 2^n.
+ uint32_t log_size;
+ for (log_size = 0; (UINT32_C(1) << log_size)
+ < options->dictionary_size; ++log_size) ;
+
+ next->coder->dist_table_size = log_size * 2;
+ }
+
+ // Misc FIXME desc
+ next->coder->dictionary_size = options->dictionary_size;
+ next->coder->pos_mask = (1U << options->pos_bits) - 1;
+ next->coder->fast_bytes = options->fast_bytes;
+
+ // Range coder
+ rc_reset(next->coder->rc);
+
+ // State
+ next->coder->state = 0;
+ next->coder->previous_byte = 0;
+ for (size_t i = 0; i < REP_DISTANCES; ++i)
+ next->coder->rep_distances[i] = 0;
+
+ // Bit encoders
+ for (size_t i = 0; i < STATES; ++i) {
+ for (size_t j = 0; j <= next->coder->pos_mask; ++j) {
+ bit_reset(next->coder->is_match[i][j]);
+ bit_reset(next->coder->is_rep0_long[i][j]);
+ }
+
+ bit_reset(next->coder->is_rep[i]);
+ bit_reset(next->coder->is_rep0[i]);
+ bit_reset(next->coder->is_rep1[i]);
+ bit_reset(next->coder->is_rep2[i]);
+ }
+
+ for (size_t i = 0; i < FULL_DISTANCES - END_POS_MODEL_INDEX; ++i)
+ bit_reset(next->coder->pos_encoders[i]);
+
+ // Bit tree encoders
+ for (size_t i = 0; i < LEN_TO_POS_STATES; ++i)
+ bittree_reset(next->coder->pos_slot_encoder[i], POS_SLOT_BITS);
+
+ bittree_reset(next->coder->pos_align_encoder, ALIGN_BITS);
+
+ // Length encoders
+ length_encoder_reset(&next->coder->len_encoder, 1U << options->pos_bits,
+ options->fast_bytes + 1 - MATCH_MIN_LEN);
+
+ length_encoder_reset(&next->coder->rep_match_len_encoder,
+ 1U << options->pos_bits,
+ next->coder->fast_bytes + 1 - MATCH_MIN_LEN);
+
+ // Misc
+ next->coder->longest_match_was_found = false;
+ next->coder->optimum_end_index = 0;
+ next->coder->optimum_current_index = 0;
+ next->coder->additional_offset = 0;
+
+ next->coder->now_pos = 0;
+ next->coder->is_initialized = false;
+
+ // Initialize the next decoder in the chain, if any.
+ {
+ const lzma_ret ret = lzma_next_filter_init(&next->coder->next,
+ allocator, filters + 1);
+ if (ret != LZMA_OK) {
+ lzma_lzma_encoder_end(next->coder, allocator);
+ return ret;
+ }
+ }
+
+ // Initialization successful. Set the function pointers.
+ next->code = &lzma_lz_encode;
+ next->end = &lzma_lzma_encoder_end;
+
+ return LZMA_OK;
+}
+
+
+extern bool
+lzma_lzma_encode_properties(const lzma_options_lzma *options, uint8_t *byte)
+{
+ if (options->literal_context_bits > LZMA_LITERAL_CONTEXT_BITS_MAX
+ || options->literal_pos_bits
+ > LZMA_LITERAL_POS_BITS_MAX
+ || options->pos_bits > LZMA_POS_BITS_MAX)
+ return true;
+
+ *byte = (options->pos_bits * 5 + options->literal_pos_bits) * 9
+ + options->literal_context_bits;
+ assert(*byte <= (4 * 5 + 4) * 9 + 8);
+
+ return false;
+}
diff --git a/src/liblzma/lzma/lzma_encoder_presets.c b/src/liblzma/lzma/lzma_encoder_presets.c
new file mode 100644
index 0000000..966c7c8
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder_presets.c
@@ -0,0 +1,34 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder_presets.c
+/// \brief Encoder presets
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "common.h"
+
+
+LZMA_API const lzma_options_lzma lzma_preset_lzma[9] = {
+// dictionary_size lc lp pb mode fb mf mfc
+{ UINT32_C(1) << 16, 3, 0, 2, NULL, 0, LZMA_MODE_FAST, 64, LZMA_MF_HC3, 0 },
+{ UINT32_C(1) << 20, 3, 0, 2, NULL, 0, LZMA_MODE_FAST, 64, LZMA_MF_HC4, 0 },
+{ UINT32_C(1) << 19, 3, 0, 2, NULL, 0, LZMA_MODE_BEST, 64, LZMA_MF_BT4, 0 },
+{ UINT32_C(1) << 20, 3, 0, 2, NULL, 0, LZMA_MODE_BEST, 64, LZMA_MF_BT4, 0 },
+{ UINT32_C(1) << 21, 3, 0, 2, NULL, 0, LZMA_MODE_BEST, 128, LZMA_MF_BT4, 0 },
+{ UINT32_C(1) << 22, 3, 0, 2, NULL, 0, LZMA_MODE_BEST, 128, LZMA_MF_BT4, 0 },
+{ UINT32_C(1) << 23, 3, 0, 2, NULL, 0, LZMA_MODE_BEST, 128, LZMA_MF_BT4, 0 },
+{ UINT32_C(1) << 24, 3, 0, 2, NULL, 0, LZMA_MODE_BEST, 273, LZMA_MF_BT4, 0 },
+{ UINT32_C(1) << 25, 3, 0, 2, NULL, 0, LZMA_MODE_BEST, 273, LZMA_MF_BT4, 0 },
+};
diff --git a/src/liblzma/lzma/lzma_encoder_private.h b/src/liblzma/lzma/lzma_encoder_private.h
new file mode 100644
index 0000000..7fb1566
--- /dev/null
+++ b/src/liblzma/lzma/lzma_encoder_private.h
@@ -0,0 +1,225 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_encoder_private.h
+/// \brief Private definitions for LZMA encoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZMA_ENCODER_PRIVATE_H
+#define LZMA_LZMA_ENCODER_PRIVATE_H
+
+#include "lzma_encoder.h"
+#include "lzma_common.h"
+#include "lz_encoder.h"
+
+// We need space for about two encoding loops, because there is no check
+// for available buffer space before end of payload marker gets written.
+// 2*26 bytes should be enough for this... but Lasse isn't very sure about
+// the exact value. 64 bytes certainly is enough. :-)
+#define RC_BUFFER_SIZE 64
+#include "range_encoder.h"
+
+
+#define move_pos(num) \
+do { \
+ assert((int32_t)(num) >= 0); \
+ if ((num) != 0) { \
+ coder->additional_offset += num; \
+ coder->lz.skip(&coder->lz, num); \
+ } \
+} while (0)
+
+
+#define get_pos_slot(pos) \
+ ((pos) < (1 << 11) \
+ ? lzma_fastpos[pos] \
+ : ((pos) < (1 << 21) \
+ ? lzma_fastpos[(pos) >> 10] + 20 \
+ : lzma_fastpos[(pos) >> 20] + 40))
+
+
+#define get_pos_slot_2(pos) \
+ ((pos) < (1 << 17) \
+ ? lzma_fastpos[(pos) >> 6] + 12 \
+ : ((pos) < (1 << 27) \
+ ? lzma_fastpos[(pos) >> 16] + 32 \
+ : lzma_fastpos[(pos) >> 26] + 52))
+
+
+/// This isn't modified once its contents have been
+/// initialized by lzma_fastpos_init().
+extern uint8_t lzma_fastpos[1 << 11];
+
+
+typedef struct {
+ probability choice;
+ probability choice2;
+ probability low[POS_STATES_MAX][LEN_LOW_SYMBOLS];
+ probability mid[POS_STATES_MAX][LEN_MID_SYMBOLS];
+ probability high[LEN_HIGH_SYMBOLS];
+
+ uint32_t prices[POS_STATES_MAX][LEN_SYMBOLS];
+ uint32_t table_size;
+ uint32_t counters[POS_STATES_MAX];
+
+} lzma_length_encoder;
+
+
+typedef struct {
+ uint32_t state;
+
+ bool prev_1_is_char;
+ bool prev_2;
+
+ uint32_t pos_prev_2;
+ uint32_t back_prev_2;
+
+ uint32_t price;
+ uint32_t pos_prev; // pos_next;
+ uint32_t back_prev;
+
+ uint32_t backs[4];
+
+} lzma_optimal;
+
+
+struct lzma_coder_s {
+ // Next coder in the chain
+ lzma_next_coder next;
+
+ // In window and match finder
+ lzma_lz_encoder lz;
+
+ // Range encoder
+ lzma_range_encoder rc;
+
+ // State
+ uint32_t state;
+ uint8_t previous_byte;
+ uint32_t rep_distances[REP_DISTANCES];
+
+ // Misc
+ uint32_t match_distances[MATCH_MAX_LEN * 2 + 2 + 1];
+ uint32_t num_distance_pairs;
+ uint32_t additional_offset;
+ uint32_t now_pos; // Lowest 32 bits are enough here.
+ bool best_compression; ///< True when LZMA_MODE_BEST is used
+ bool is_initialized;
+
+ // Literal encoder
+ lzma_literal_coder *literal_coder;
+
+ // Bit encoders
+ probability is_match[STATES][POS_STATES_MAX];
+ probability is_rep[STATES];
+ probability is_rep0[STATES];
+ probability is_rep1[STATES];
+ probability is_rep2[STATES];
+ probability is_rep0_long[STATES][POS_STATES_MAX];
+ probability pos_encoders[FULL_DISTANCES - END_POS_MODEL_INDEX];
+
+ // Bit Tree Encoders
+ probability pos_slot_encoder[LEN_TO_POS_STATES][1 << POS_SLOT_BITS];
+ probability pos_align_encoder[1 << ALIGN_BITS];
+
+ // Length encoders
+ lzma_length_encoder len_encoder;
+ lzma_length_encoder rep_match_len_encoder;
+
+ // Optimal
+ lzma_optimal optimum[OPTS];
+ uint32_t optimum_end_index;
+ uint32_t optimum_current_index;
+ uint32_t longest_match_length;
+ bool longest_match_was_found;
+
+ // Prices
+ uint32_t pos_slot_prices[LEN_TO_POS_STATES][DIST_TABLE_SIZE_MAX];
+ uint32_t distances_prices[LEN_TO_POS_STATES][FULL_DISTANCES];
+ uint32_t align_prices[ALIGN_TABLE_SIZE];
+ uint32_t align_price_count;
+ uint32_t dist_table_size;
+ uint32_t match_price_count;
+
+ // LZMA specific settings
+ uint32_t dictionary_size; ///< Size in bytes
+ uint32_t fast_bytes;
+ uint32_t pos_state_bits;
+ uint32_t pos_mask; ///< (1 << pos_state_bits) - 1
+};
+
+
+extern void lzma_length_encoder_update_table(lzma_length_encoder *lencoder,
+ const uint32_t pos_state);
+
+extern bool lzma_lzma_encode(lzma_coder *coder, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size);
+
+extern void lzma_get_optimum(lzma_coder *restrict coder,
+ uint32_t *restrict back_res, uint32_t *restrict len_res);
+
+extern void lzma_get_optimum_fast(lzma_coder *restrict coder,
+ uint32_t *restrict back_res, uint32_t *restrict len_res);
+
+
+// NOTE: Don't add 'restrict'.
+static inline void
+lzma_read_match_distances(lzma_coder *coder,
+ uint32_t *len_res, uint32_t *num_distance_pairs)
+{
+ *len_res = 0;
+
+ coder->lz.get_matches(&coder->lz, coder->match_distances);
+
+ *num_distance_pairs = coder->match_distances[0];
+
+ if (*num_distance_pairs > 0) {
+ *len_res = coder->match_distances[*num_distance_pairs - 1];
+ assert(*len_res <= MATCH_MAX_LEN);
+
+ if (*len_res == coder->fast_bytes) {
+ uint32_t offset = *len_res - 1;
+ const uint32_t distance = coder->match_distances[
+ *num_distance_pairs] + 1;
+ uint32_t limit = MATCH_MAX_LEN - *len_res;
+
+ assert(offset + limit < coder->lz.keep_size_after);
+
+ // If we are close to end of the stream, we may need
+ // to limit the length of the match.
+ if (coder->lz.stream_end_was_reached
+ && coder->lz.write_pos
+ < coder->lz.read_pos + offset + limit)
+ limit = coder->lz.write_pos
+ - (coder->lz.read_pos + offset);
+
+ offset += coder->lz.read_pos;
+ uint32_t i = 0;
+ while (i < limit && coder->lz.buffer[offset + i]
+ == coder->lz.buffer[
+ offset + i - distance])
+ ++i;
+
+ *len_res += i;
+ }
+ }
+
+ ++coder->additional_offset;
+
+ return;
+}
+
+#endif
diff --git a/src/liblzma/lzma/lzma_literal.c b/src/liblzma/lzma/lzma_literal.c
new file mode 100644
index 0000000..8f650fb
--- /dev/null
+++ b/src/liblzma/lzma/lzma_literal.c
@@ -0,0 +1,74 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_literal.c
+/// \brief Literal Coder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "lzma_literal.h"
+
+
+extern lzma_ret
+lzma_literal_init(lzma_literal_coder **coder, lzma_allocator *allocator,
+ uint32_t literal_context_bits, uint32_t literal_pos_bits)
+{
+ // Verify that arguments are sane.
+ if (literal_context_bits > LZMA_LITERAL_CONTEXT_BITS_MAX
+ || literal_pos_bits > LZMA_LITERAL_POS_BITS_MAX)
+ return LZMA_HEADER_ERROR;
+
+ // Calculate the number of states the literal coder must store.
+ const uint32_t states = literal_states(
+ literal_pos_bits, literal_context_bits);
+
+ // Allocate a new literal coder, if needed.
+ if (*coder == NULL || (**coder).literal_context_bits
+ != literal_context_bits
+ || (**coder).literal_pos_bits != literal_pos_bits) {
+ // Free the old coder, if any.
+ lzma_free(*coder, allocator);
+
+ // Allocate a new one.
+ *coder = lzma_alloc(sizeof(lzma_literal_coder)
+ + states * LIT_SIZE * sizeof(probability),
+ allocator);
+ if (*coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ // Store the new settings.
+ (**coder).literal_context_bits = literal_context_bits;
+ (**coder).literal_pos_bits = literal_pos_bits;
+
+ // Calculate also the literal_pos_mask. It's not changed
+ // anywhere else than here.
+ (**coder).literal_pos_mask = (1 << literal_pos_bits) - 1;
+ }
+
+ // Reset the literal coder.
+ for (uint32_t i = 0; i < states; ++i)
+ for (uint32_t j = 0; j < LIT_SIZE; ++j)
+ bit_reset((**coder).coders[i][j]);
+
+ return LZMA_OK;
+}
+
+
+extern void
+lzma_literal_end(lzma_literal_coder **coder, lzma_allocator *allocator)
+{
+ lzma_free(*coder, allocator);
+ *coder = NULL;
+}
diff --git a/src/liblzma/lzma/lzma_literal.h b/src/liblzma/lzma/lzma_literal.h
new file mode 100644
index 0000000..174f5ed
--- /dev/null
+++ b/src/liblzma/lzma/lzma_literal.h
@@ -0,0 +1,74 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzma_literal.h
+/// \brief Literal Coder
+///
+/// This is used as is by both LZMA encoder and decoder.
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LITERAL_H
+#define LZMA_LITERAL_H
+
+#include "common.h"
+
+// We need typedef of `probability'.
+#include "range_common.h"
+
+
+/// Each literal coder is divided in three sections:
+/// - 0x001-0x0FF: Without match byte
+/// - 0x101-0x1FF: With match byte; match bit is 0
+/// - 0x201-0x2FF: With match byte; match bit is 1
+#define LIT_SIZE 0x300
+
+/// Calculate how many states are needed. Each state has
+/// LIT_SIZE `probability' variables.
+#define literal_states(literal_context_bits, literal_pos_bits) \
+ (1U << ((literal_context_bits) + (literal_pos_bits)))
+
+/// Locate the literal coder for the next literal byte. The choice depends on
+/// - the lowest literal_pos_bits bits of the position of the current
+/// byte; and
+/// - the highest literal_context_bits bits of the previous byte.
+#define literal_get_subcoder(literal_coder, pos, prev_byte) \
+ (literal_coder)->coders[(((pos) & (literal_coder)->literal_pos_mask) \
+ << (literal_coder)->literal_context_bits) \
+ + ((prev_byte) >> (8 - (literal_coder)->literal_context_bits))]
+
+
+typedef struct {
+ uint32_t literal_context_bits;
+ uint32_t literal_pos_bits;
+
+ /// literal_pos_mask is always (1 << literal_pos_bits) - 1.
+ uint32_t literal_pos_mask;
+
+ /// There are (1 << (literal_pos_bits + literal_context_bits))
+ /// literal coders.
+ probability coders[][LIT_SIZE];
+
+} lzma_literal_coder;
+
+
+extern lzma_ret lzma_literal_init(
+ lzma_literal_coder **coder, lzma_allocator *allocator,
+ uint32_t literal_context_bits, uint32_t literal_pos_bits);
+
+extern void lzma_literal_end(
+ lzma_literal_coder **coder, lzma_allocator *allocator);
+
+#endif
diff --git a/src/liblzma/rangecoder/Makefile.am b/src/liblzma/rangecoder/Makefile.am
new file mode 100644
index 0000000..ef5d146
--- /dev/null
+++ b/src/liblzma/rangecoder/Makefile.am
@@ -0,0 +1,28 @@
+##
+## Copyright (C) 2006 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+noinst_LTLIBRARIES = librangecoder.la
+
+librangecoder_la_SOURCES = range_common.h
+librangecoder_la_CPPFLAGS = \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_srcdir@/src/liblzma/common
+
+if COND_MAIN_ENCODER
+librangecoder_la_SOURCES += range_encoder.c range_encoder.h
+endif
+
+if COND_MAIN_DECODER
+librangecoder_la_SOURCES += range_decoder.h
+endif
diff --git a/src/liblzma/rangecoder/range_common.h b/src/liblzma/rangecoder/range_common.h
new file mode 100644
index 0000000..9e8f89a
--- /dev/null
+++ b/src/liblzma/rangecoder/range_common.h
@@ -0,0 +1,68 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file range_common.h
+/// \brief Common things for range encoder and decoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2006 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_RANGE_COMMON_H
+#define LZMA_RANGE_COMMON_H
+
+#include "common.h"
+
+
+///////////////
+// Constants //
+///////////////
+
+#define SHIFT_BITS 8
+#define TOP_BITS 24
+#define TOP_VALUE (UINT32_C(1) << TOP_BITS)
+#define BIT_MODEL_TOTAL_BITS 11
+#define BIT_MODEL_TOTAL (UINT32_C(1) << BIT_MODEL_TOTAL_BITS)
+#define MOVE_BITS 5
+
+#define MOVE_REDUCING_BITS 2
+#define BIT_PRICE_SHIFT_BITS 6
+
+
+////////////
+// Macros //
+////////////
+
+// Resets the probability so that both 0 and 1 have probability of 50 %
+#define bit_reset(prob) \
+ prob = BIT_MODEL_TOTAL >> 1
+
+// This does the same for a complete bit tree.
+// (A tree represented as an array.)
+#define bittree_reset(probs, bit_levels) \
+ for (uint32_t bt_i = 0; bt_i < (1 << (bit_levels)); ++bt_i) \
+ bit_reset((probs)[bt_i])
+
+
+//////////////////////
+// Type definitions //
+//////////////////////
+
+// Bit coder speed optimization
+// uint16_t is enough for probability, but usually uint32_t is faster and it
+// doesn't waste too much memory. If uint64_t is fastest on 64-bit CPU, you
+// probably want to use that instead of uint32_t. With uint64_t you will
+// waste RAM _at maximum_ of 4.5 MiB (same for both encoding and decoding).
+typedef uint32_t probability;
+
+#endif
diff --git a/src/liblzma/rangecoder/range_decoder.h b/src/liblzma/rangecoder/range_decoder.h
new file mode 100644
index 0000000..0583faa
--- /dev/null
+++ b/src/liblzma/rangecoder/range_decoder.h
@@ -0,0 +1,189 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file range_decoder.h
+/// \brief Range Decoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_RANGE_DECODER_H
+#define LZMA_RANGE_DECODER_H
+
+#include "range_common.h"
+
+
+typedef struct {
+ uint32_t range;
+ uint32_t code;
+} lzma_range_decoder;
+
+
+/// Makes local copies of range decoder variables.
+#define rc_to_local(rc) \
+ uint32_t rc_range = (rc).range; \
+ uint32_t rc_code = (rc).code; \
+ uint32_t rc_bound
+
+/// Stores the local copes back to the range decoder structure.
+#define rc_from_local(rc) \
+do {\
+ (rc).range = rc_range; \
+ (rc).code = rc_code; \
+} while (0)
+
+/// Resets the range decoder structure.
+#define rc_reset(rc) \
+do { \
+ (rc).range = UINT32_MAX; \
+ (rc).code = 0; \
+} while (0)
+
+
+// All of the macros in this file expect the following variables being defined:
+// - uint32_t rc_range;
+// - uint32_t rc_code;
+// - uint32_t rc_bound; // Temporary variable
+// - uint8_t *in;
+// - size_t in_pos_local; // Local alias for *in_pos
+
+
+//////////////////
+// Buffer "I/O" //
+//////////////////
+
+// Read the next byte of compressed data from buffer_in, if needed.
+#define rc_normalize() \
+do { \
+ if (rc_range < TOP_VALUE) { \
+ rc_range <<= SHIFT_BITS; \
+ rc_code = (rc_code << SHIFT_BITS) | in[in_pos_local++]; \
+ } \
+} while (0)
+
+
+//////////////////
+// Bit decoding //
+//////////////////
+
+// Range decoder's DecodeBit() is splitted into three macros:
+// if_bit_0(prob) {
+// update_bit_0(prob)
+// ...
+// } else {
+// update_bit_1(prob)
+// ...
+// }
+
+#define if_bit_0(prob) \
+ rc_normalize(); \
+ rc_bound = (rc_range >> BIT_MODEL_TOTAL_BITS) * (prob); \
+ if (rc_code < rc_bound)
+
+
+#define update_bit_0(prob) \
+do { \
+ rc_range = rc_bound; \
+ prob += (BIT_MODEL_TOTAL - (prob)) >> MOVE_BITS; \
+} while (0)
+
+
+#define update_bit_1(prob) \
+do { \
+ rc_range -= rc_bound; \
+ rc_code -= rc_bound; \
+ prob -= (prob) >> MOVE_BITS; \
+} while (0)
+
+
+// Dummy versions don't update prob.
+#define update_bit_0_dummy() \
+ rc_range = rc_bound
+
+
+#define update_bit_1_dummy() \
+do { \
+ rc_range -= rc_bound; \
+ rc_code -= rc_bound; \
+} while (0)
+
+
+///////////////////////
+// Bit tree decoding //
+///////////////////////
+
+#define bittree_decode(target, probs, bit_levels) \
+do { \
+ uint32_t model_index = 1; \
+ for (uint32_t bit_index = (bit_levels); bit_index != 0; --bit_index) { \
+ if_bit_0((probs)[model_index]) { \
+ update_bit_0((probs)[model_index]); \
+ model_index <<= 1; \
+ } else { \
+ update_bit_1((probs)[model_index]); \
+ model_index = (model_index << 1) | 1; \
+ } \
+ } \
+ target += model_index - (1 << bit_levels); \
+} while (0)
+
+
+#define bittree_reverse_decode(target, probs, bit_levels) \
+do { \
+ uint32_t model_index = 1; \
+ for (uint32_t bit_index = 0; bit_index < bit_levels; ++bit_index) { \
+ if_bit_0((probs)[model_index]) { \
+ update_bit_0((probs)[model_index]); \
+ model_index <<= 1; \
+ } else { \
+ update_bit_1((probs)[model_index]); \
+ model_index = (model_index << 1) | 1; \
+ target += 1 << bit_index; \
+ } \
+ } \
+} while (0)
+
+
+// Dummy versions don't update prob.
+#define bittree_decode_dummy(target, probs, bit_levels) \
+do { \
+ uint32_t model_index = 1; \
+ for (uint32_t bit_index = (bit_levels); bit_index != 0; --bit_index) { \
+ if_bit_0((probs)[model_index]) { \
+ update_bit_0_dummy(); \
+ model_index <<= 1; \
+ } else { \
+ update_bit_1_dummy(); \
+ model_index = (model_index << 1) | 1; \
+ } \
+ } \
+ target += model_index - (1 << bit_levels); \
+} while (0)
+
+
+#define bittree_reverse_decode_dummy(probs, bit_levels) \
+do { \
+ uint32_t model_index = 1; \
+ for (uint32_t bit_index = 0; bit_index < bit_levels; ++bit_index) { \
+ if_bit_0((probs)[model_index]) { \
+ update_bit_0_dummy(); \
+ model_index <<= 1; \
+ } else { \
+ update_bit_1_dummy(); \
+ model_index = (model_index << 1) | 1; \
+ } \
+ } \
+} while (0)
+
+#endif
diff --git a/src/liblzma/rangecoder/range_encoder.c b/src/liblzma/rangecoder/range_encoder.c
new file mode 100644
index 0000000..f03bd87
--- /dev/null
+++ b/src/liblzma/rangecoder/range_encoder.c
@@ -0,0 +1,46 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file range_encoder.c
+/// \brief Static initializations for the range encoder's prices array
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "range_encoder.h"
+
+
+#define NUM_BITS (BIT_MODEL_TOTAL_BITS - MOVE_REDUCING_BITS)
+
+
+uint32_t lzma_rc_prob_prices[BIT_MODEL_TOTAL >> MOVE_REDUCING_BITS];
+
+
+extern void
+lzma_rc_init(void)
+{
+ // Initialize lzma_rc_prob_prices[].
+ for (int i = NUM_BITS - 1; i >= 0; --i) {
+ const uint32_t start = 1 << (NUM_BITS - i - 1);
+ const uint32_t end = 1 << (NUM_BITS - i);
+
+ for (uint32_t j = start; j < end; ++j) {
+ lzma_rc_prob_prices[j] = (i << BIT_PRICE_SHIFT_BITS)
+ + (((end - j) << BIT_PRICE_SHIFT_BITS)
+ >> (NUM_BITS - i - 1));
+ }
+ }
+
+ return;
+}
diff --git a/src/liblzma/rangecoder/range_encoder.h b/src/liblzma/rangecoder/range_encoder.h
new file mode 100644
index 0000000..d513cfd
--- /dev/null
+++ b/src/liblzma/rangecoder/range_encoder.h
@@ -0,0 +1,317 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file range_encoder.h
+/// \brief Range Encoder
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_RANGE_ENCODER_H
+#define LZMA_RANGE_ENCODER_H
+
+#include "range_common.h"
+
+
+// Allow #including this file even if RC_TEMP_BUFFER_SIZE isn't defined.
+#ifdef RC_BUFFER_SIZE
+typedef struct {
+ uint64_t low;
+ uint32_t range;
+ uint32_t cache_size;
+ uint8_t cache;
+ uint8_t buffer[RC_BUFFER_SIZE];
+ size_t buffer_size;
+} lzma_range_encoder;
+#endif
+
+
+/// Makes local copies of range encoder variables.
+#define rc_to_local(rc) \
+ uint64_t rc_low = (rc).low; \
+ uint32_t rc_range = (rc).range; \
+ uint32_t rc_cache_size = (rc).cache_size; \
+ uint8_t rc_cache = (rc).cache; \
+ uint8_t *rc_buffer = (rc).buffer; \
+ size_t rc_buffer_size = (rc).buffer_size
+
+/// Stores the local copes back to the range encoder structure.
+#define rc_from_local(rc) \
+do { \
+ (rc).low = rc_low; \
+ (rc).range = rc_range; \
+ (rc).cache_size = rc_cache_size; \
+ (rc).cache = rc_cache; \
+ (rc).buffer_size = rc_buffer_size; \
+} while (0)
+
+/// Resets the range encoder structure.
+#define rc_reset(rc) \
+do { \
+ (rc).low = 0; \
+ (rc).range = 0xFFFFFFFF; \
+ (rc).cache_size = 1; \
+ (rc).cache = 0; \
+ (rc).buffer_size = 0; \
+} while (0)
+
+
+//////////////////
+// Bit encoding //
+//////////////////
+
+// These macros expect that the following variables are defined:
+// - uint64_t rc_low;
+// - uint32_t rc_range;
+// - uint8_t rc_cache;
+// - uint32_t rc_cache_size;
+// - uint8_t *out;
+// - size_t out_pos_local; // Local copy of *out_pos
+// - size_t size_out;
+
+
+// Combined from NRangeCoder::CEncoder::Encode()
+// and NRangeCoder::CEncoder::UpdateModel().
+#define bit_encode(prob, symbol) \
+do { \
+ probability rc_prob = prob; \
+ const uint32_t rc_bound \
+ = (rc_range >> BIT_MODEL_TOTAL_BITS) * rc_prob; \
+ if ((symbol) == 0) { \
+ rc_range = rc_bound; \
+ rc_prob += (BIT_MODEL_TOTAL - rc_prob) >> MOVE_BITS; \
+ } else { \
+ rc_low += rc_bound; \
+ rc_range -= rc_bound; \
+ rc_prob -= rc_prob >> MOVE_BITS; \
+ } \
+ prob = rc_prob; \
+ rc_normalize(); \
+} while (0)
+
+
+// Optimized version of bit_encode(prob, 0)
+#define bit_encode_0(prob) \
+do { \
+ probability rc_prob = prob; \
+ rc_range = (rc_range >> BIT_MODEL_TOTAL_BITS) * rc_prob; \
+ rc_prob += (BIT_MODEL_TOTAL - rc_prob) >> MOVE_BITS; \
+ prob = rc_prob; \
+ rc_normalize(); \
+} while (0)
+
+
+// Optimized version of bit_encode(prob, 1)
+#define bit_encode_1(prob) \
+do { \
+ probability rc_prob = prob; \
+ const uint32_t rc_bound = (rc_range >> BIT_MODEL_TOTAL_BITS) \
+ * rc_prob; \
+ rc_low += rc_bound; \
+ rc_range -= rc_bound; \
+ rc_prob -= rc_prob >> MOVE_BITS; \
+ prob = rc_prob; \
+ rc_normalize(); \
+} while (0)
+
+
+///////////////////////
+// Bit tree encoding //
+///////////////////////
+
+#define bittree_encode(probs, bit_levels, symbol) \
+do { \
+ uint32_t model_index = 1; \
+ for (int32_t bit_index = bit_levels - 1; \
+ bit_index >= 0; --bit_index) { \
+ const uint32_t bit = ((symbol) >> bit_index) & 1; \
+ bit_encode((probs)[model_index], bit); \
+ model_index = (model_index << 1) | bit; \
+ } \
+} while (0)
+
+
+#define bittree_reverse_encode(probs, bit_levels, symbol) \
+do { \
+ uint32_t model_index = 1; \
+ for (uint32_t bit_index = 0; bit_index < bit_levels; ++bit_index) { \
+ const uint32_t bit = ((symbol) >> bit_index) & 1; \
+ bit_encode((probs)[model_index], bit); \
+ model_index = (model_index << 1) | bit; \
+ } \
+} while (0)
+
+
+/////////////////
+// Direct bits //
+/////////////////
+
+#define rc_encode_direct_bits(value, num_total_bits) \
+do { \
+ for (int32_t rc_i = (num_total_bits) - 1; rc_i >= 0; --rc_i) { \
+ rc_range >>= 1; \
+ if ((((value) >> rc_i) & 1) == 1) \
+ rc_low += rc_range; \
+ rc_normalize(); \
+ } \
+} while (0)
+
+
+//////////////////
+// Buffer "I/O" //
+//////////////////
+
+// Calls rc_shift_low() to write out a byte if needed.
+#define rc_normalize() \
+do { \
+ if (rc_range < TOP_VALUE) { \
+ rc_range <<= SHIFT_BITS; \
+ rc_shift_low(); \
+ } \
+} while (0)
+
+
+// Flushes all the pending output.
+#define rc_flush() \
+ for (int32_t rc_i = 0; rc_i < 5; ++rc_i) \
+ rc_shift_low()
+
+
+// Writes the compressed data to next_out.
+// TODO: Notation change?
+// (uint32_t)(0xFF000000) => ((uint32_t)(0xFF) << TOP_BITS)
+// TODO: Another notation change?
+// rc_low = (uint32_t)(rc_low) << SHIFT_BITS;
+// =>
+// rc_low &= TOP_VALUE - 1;
+// rc_low <<= SHIFT_BITS;
+#define rc_shift_low() \
+do { \
+ if ((uint32_t)(rc_low) < (uint32_t)(0xFF000000) \
+ || (uint32_t)(rc_low >> 32) != 0) { \
+ uint8_t rc_temp = rc_cache; \
+ do { \
+ rc_write_byte(rc_temp + (uint8_t)(rc_low >> 32)); \
+ rc_temp = 0xFF; \
+ } while(--rc_cache_size != 0); \
+ rc_cache = (uint8_t)((uint32_t)(rc_low) >> 24); \
+ } \
+ ++rc_cache_size; \
+ rc_low = (uint32_t)(rc_low) << SHIFT_BITS; \
+} while (0)
+
+
+// Write one byte of compressed data to *next_out. Updates out_pos_local.
+// If out_pos_local == out_size, the byte is appended to rc_buffer.
+#define rc_write_byte(b) \
+do { \
+ if (out_pos_local == out_size) { \
+ rc_buffer[rc_buffer_size++] = (uint8_t)(b); \
+ assert(rc_buffer_size < RC_BUFFER_SIZE); \
+ } else { \
+ assert(rc_buffer_size == 0); \
+ out[out_pos_local++] = (uint8_t)(b); \
+ } \
+} while (0)
+
+
+//////////////////
+// Price macros //
+//////////////////
+
+// These macros expect that the following variables are defined:
+// - uint32_t lzma_rc_prob_prices;
+
+#define bit_get_price(prob, symbol) \
+ lzma_rc_prob_prices[((((prob) - (symbol)) ^ (-(symbol))) \
+ & (BIT_MODEL_TOTAL - 1)) >> MOVE_REDUCING_BITS]
+
+
+#define bit_get_price_0(prob) \
+ lzma_rc_prob_prices[(prob) >> MOVE_REDUCING_BITS]
+
+
+#define bit_get_price_1(prob) \
+ lzma_rc_prob_prices[(BIT_MODEL_TOTAL - (prob)) >> MOVE_REDUCING_BITS]
+
+
+// Adds price to price_target. TODO Optimize/Cleanup?
+#define bittree_get_price(price_target, probs, bit_levels, symbol) \
+do { \
+ uint32_t bittree_symbol = (symbol) | (UINT32_C(1) << bit_levels); \
+ while (bittree_symbol != 1) { \
+ price_target += bit_get_price((probs)[bittree_symbol >> 1], \
+ bittree_symbol & 1); \
+ bittree_symbol >>= 1; \
+ } \
+} while (0)
+
+
+// Adds price to price_target.
+#define bittree_reverse_get_price(price_target, probs, bit_levels, symbol) \
+do { \
+ uint32_t model_index = 1; \
+ for (uint32_t bit_index = 0; bit_index < bit_levels; ++bit_index) { \
+ const uint32_t bit = ((symbol) >> bit_index) & 1; \
+ price_target += bit_get_price((probs)[model_index], bit); \
+ model_index = (model_index << 1) | bit; \
+ } \
+} while (0)
+
+
+//////////////////////
+// Global variables //
+//////////////////////
+
+// Probability prices used by *_get_price() macros. This is initialized
+// by lzma_rc_init() and is not modified later.
+extern uint32_t lzma_rc_prob_prices[BIT_MODEL_TOTAL >> MOVE_REDUCING_BITS];
+
+
+///////////////
+// Functions //
+///////////////
+
+/// Initializes lzma_rc_prob_prices[]. This needs to be called only once.
+extern void lzma_rc_init(void);
+
+
+#ifdef RC_BUFFER_SIZE
+/// Flushes data from rc->temp[] to out[] as much as possible. If everything
+/// cannot be flushed, returns true; false otherwise.
+static inline bool
+rc_flush_buffer(lzma_range_encoder *rc,
+ uint8_t *out, size_t *out_pos, size_t out_size)
+{
+ if (rc->buffer_size > 0) {
+ const size_t out_avail = out_size - *out_pos;
+ if (rc->buffer_size > out_avail) {
+ memcpy(out + *out_pos, rc->buffer, out_avail);
+ *out_pos += out_avail;
+ rc->buffer_size -= out_avail;
+ memmove(rc->buffer, rc->buffer + out_avail,
+ rc->buffer_size);
+ return true;
+ }
+
+ memcpy(out + *out_pos, rc->buffer, rc->buffer_size);
+ *out_pos += rc->buffer_size;
+ rc->buffer_size = 0;
+ }
+
+ return false;
+}
+#endif
+
+#endif
diff --git a/src/liblzma/simple/Makefile.am b/src/liblzma/simple/Makefile.am
new file mode 100644
index 0000000..a37f1eb
--- /dev/null
+++ b/src/liblzma/simple/Makefile.am
@@ -0,0 +1,46 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+noinst_LTLIBRARIES = libsimple.la
+libsimple_la_CPPFLAGS = \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_srcdir@/src/liblzma/common
+libsimple_la_SOURCES = \
+ simple_coder.c \
+ simple_coder.h \
+ simple_private.h
+
+if COND_FILTER_X86
+libsimple_la_SOURCES += x86.c
+endif
+
+if COND_FILTER_POWERPC
+libsimple_la_SOURCES += powerpc.c
+endif
+
+if COND_FILTER_IA64
+libsimple_la_SOURCES += ia64.c
+endif
+
+if COND_FILTER_ARM
+libsimple_la_SOURCES += arm.c
+endif
+
+if COND_FILTER_ARMTHUMB
+libsimple_la_SOURCES += armthumb.c
+endif
+
+if COND_FILTER_SPARC
+libsimple_la_SOURCES += sparc.c
+endif
diff --git a/src/liblzma/simple/arm.c b/src/liblzma/simple/arm.c
new file mode 100644
index 0000000..284371c
--- /dev/null
+++ b/src/liblzma/simple/arm.c
@@ -0,0 +1,76 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file arm.c
+/// \brief Filter for ARM binaries
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "simple_private.h"
+
+
+static size_t
+arm_code(lzma_simple *simple lzma_attribute((unused)),
+ uint32_t now_pos, bool is_encoder,
+ uint8_t *buffer, size_t size)
+{
+ uint32_t i;
+ for (i = 0; i + 4 <= size; i += 4) {
+ if (buffer[i + 3] == 0xEB) {
+ uint32_t src = (buffer[i + 2] << 16)
+ | (buffer[i + 1] << 8)
+ | (buffer[i + 0]);
+ src <<= 2;
+
+ uint32_t dest;
+ if (is_encoder)
+ dest = now_pos + (uint32_t)(i) + 8 + src;
+ else
+ dest = src - (now_pos + (uint32_t)(i) + 8);
+
+ dest >>= 2;
+ buffer[i + 2] = (dest >> 16);
+ buffer[i + 1] = (dest >> 8);
+ buffer[i + 0] = dest;
+ }
+ }
+
+ return i;
+}
+
+
+static lzma_ret
+arm_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ return lzma_simple_coder_init(next, allocator, filters,
+ &arm_code, 0, 4, is_encoder);
+}
+
+
+extern lzma_ret
+lzma_simple_arm_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ return arm_coder_init(next, allocator, filters, true);
+}
+
+
+extern lzma_ret
+lzma_simple_arm_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ return arm_coder_init(next, allocator, filters, false);
+}
diff --git a/src/liblzma/simple/armthumb.c b/src/liblzma/simple/armthumb.c
new file mode 100644
index 0000000..51ed2c4
--- /dev/null
+++ b/src/liblzma/simple/armthumb.c
@@ -0,0 +1,81 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file armthumb.c
+/// \brief Filter for ARM-Thumb binaries
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "simple_private.h"
+
+
+static size_t
+armthumb_code(lzma_simple *simple lzma_attribute((unused)),
+ uint32_t now_pos, bool is_encoder,
+ uint8_t *buffer, size_t size)
+{
+ uint32_t i;
+ for (i = 0; i + 4 <= size; i += 2) {
+ if ((buffer[i + 1] & 0xF8) == 0xF0
+ && (buffer[i + 3] & 0xF8) == 0xF8) {
+ uint32_t src = ((buffer[i + 1] & 0x7) << 19)
+ | (buffer[i + 0] << 11)
+ | ((buffer[i + 3] & 0x7) << 8)
+ | (buffer[i + 2]);
+
+ src <<= 1;
+
+ uint32_t dest;
+ if (is_encoder)
+ dest = now_pos + (uint32_t)(i) + 4 + src;
+ else
+ dest = src - (now_pos + (uint32_t)(i) + 4);
+
+ dest >>= 1;
+ buffer[i + 1] = 0xF0 | ((dest >> 19) & 0x7);
+ buffer[i + 0] = (dest >> 11);
+ buffer[i + 3] = 0xF8 | ((dest >> 8) & 0x7);
+ buffer[i + 2] = (dest);
+ i += 2;
+ }
+ }
+
+ return i;
+}
+
+
+static lzma_ret
+armthumb_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ return lzma_simple_coder_init(next, allocator, filters,
+ &armthumb_code, 0, 4, is_encoder);
+}
+
+
+extern lzma_ret
+lzma_simple_armthumb_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return armthumb_coder_init(next, allocator, filters, true);
+}
+
+
+extern lzma_ret
+lzma_simple_armthumb_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return armthumb_coder_init(next, allocator, filters, false);
+}
diff --git a/src/liblzma/simple/ia64.c b/src/liblzma/simple/ia64.c
new file mode 100644
index 0000000..5983052
--- /dev/null
+++ b/src/liblzma/simple/ia64.c
@@ -0,0 +1,117 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file ia64.c
+/// \brief Filter for IA64 (Itanium) binaries
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "simple_private.h"
+
+
+static size_t
+ia64_code(lzma_simple *simple lzma_attribute((unused)),
+ uint32_t now_pos, bool is_encoder,
+ uint8_t *buffer, size_t size)
+{
+ static const uint32_t BRANCH_TABLE[32] = {
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ 4, 4, 6, 6, 0, 0, 7, 7,
+ 4, 4, 0, 0, 4, 4, 0, 0
+ };
+
+ size_t i;
+ for (i = 0; i + 16 <= size; i += 16) {
+ const uint32_t instr_template = buffer[i] & 0x1F;
+ const uint32_t mask = BRANCH_TABLE[instr_template];
+ uint32_t bit_pos = 5;
+
+ for (size_t slot = 0; slot < 3; ++slot, bit_pos += 41) {
+ if (((mask >> slot) & 1) == 0)
+ continue;
+
+ const size_t byte_pos = (bit_pos >> 3);
+ const uint32_t bit_res = bit_pos & 0x7;
+ uint64_t instruction = 0;
+
+ for (size_t j = 0; j < 6; ++j)
+ instruction += (uint64_t)(
+ buffer[i + j + byte_pos])
+ << (8 * j);
+
+ uint64_t inst_norm = instruction >> bit_res;
+
+ if (((inst_norm >> 37) & 0xF) == 0x5
+ && ((inst_norm >> 9) & 0x7) == 0
+ /* && (inst_norm & 0x3F)== 0 */
+ ) {
+ uint32_t src = (uint32_t)(
+ (inst_norm >> 13) & 0xFFFFF);
+ src |= ((inst_norm >> 36) & 1) << 20;
+
+ src <<= 4;
+
+ uint32_t dest;
+ if (is_encoder)
+ dest = now_pos + (uint32_t)(i) + src;
+ else
+ dest = src - (now_pos + (uint32_t)(i));
+
+ dest >>= 4;
+
+ inst_norm &= ~((uint64_t)(0x8FFFFF) << 13);
+ inst_norm |= (uint64_t)(dest & 0xFFFFF) << 13;
+ inst_norm |= (uint64_t)(dest & 0x100000)
+ << (36 - 20);
+
+ instruction &= (1 << bit_res) - 1;
+ instruction |= (inst_norm << bit_res);
+
+ for (size_t j = 0; j < 6; j++)
+ buffer[i + j + byte_pos] = (uint8_t)(
+ instruction
+ >> (8 * j));
+ }
+ }
+ }
+
+ return i;
+}
+
+
+static lzma_ret
+ia64_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ return lzma_simple_coder_init(next, allocator, filters,
+ &ia64_code, 0, 4, is_encoder);
+}
+
+
+extern lzma_ret
+lzma_simple_ia64_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return ia64_coder_init(next, allocator, filters, true);
+}
+
+
+extern lzma_ret
+lzma_simple_ia64_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return ia64_coder_init(next, allocator, filters, false);
+}
diff --git a/src/liblzma/simple/powerpc.c b/src/liblzma/simple/powerpc.c
new file mode 100644
index 0000000..a3089fc
--- /dev/null
+++ b/src/liblzma/simple/powerpc.c
@@ -0,0 +1,80 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file powerpc.c
+/// \brief Filter for PowerPC (big endian) binaries
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "simple_private.h"
+
+
+static size_t
+powerpc_code(lzma_simple *simple lzma_attribute((unused)),
+ uint32_t now_pos, bool is_encoder,
+ uint8_t *buffer, size_t size)
+{
+ size_t i;
+ for (i = 0; i + 4 <= size; i += 4) {
+ // PowerPC branch 6(48) 24(Offset) 1(Abs) 1(Link)
+ if ((buffer[i] >> 2) == 0x12
+ && ((buffer[i + 3] & 3) == 1)) {
+
+ const uint32_t src = ((buffer[i + 0] & 3) << 24)
+ | (buffer[i + 1] << 16)
+ | (buffer[i + 2] << 8)
+ | (buffer[i + 3] & (~3));
+
+ uint32_t dest;
+ if (is_encoder)
+ dest = now_pos + (uint32_t)(i) + src;
+ else
+ dest = src - (now_pos + (uint32_t)(i));
+
+ buffer[i + 0] = 0x48 | ((dest >> 24) & 0x03);
+ buffer[i + 1] = (dest >> 16);
+ buffer[i + 2] = (dest >> 8);
+ buffer[i + 3] &= 0x03;
+ buffer[i + 3] |= dest;
+ }
+ }
+
+ return i;
+}
+
+
+static lzma_ret
+powerpc_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ return lzma_simple_coder_init(next, allocator, filters,
+ &powerpc_code, 0, 4, is_encoder);
+}
+
+
+extern lzma_ret
+lzma_simple_powerpc_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return powerpc_coder_init(next, allocator, filters, true);
+}
+
+
+extern lzma_ret
+lzma_simple_powerpc_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return powerpc_coder_init(next, allocator, filters, false);
+}
diff --git a/src/liblzma/simple/simple_coder.c b/src/liblzma/simple/simple_coder.c
new file mode 100644
index 0000000..f60dff3
--- /dev/null
+++ b/src/liblzma/simple/simple_coder.c
@@ -0,0 +1,306 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file simple_coder.c
+/// \brief Wrapper for simple filters
+///
+/// Simple filters don't change the size of the data i.e. number of bytes
+/// in equals the number of bytes out.
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "simple_private.h"
+
+
+/// Copied or encodes/decodes more data to out[]. Checks and updates
+/// uncompressed_size when we are the last coder in the chain.
+/// If we aren't the last filter in the chain, we don't need to care about
+/// uncompressed size, since we don't change it; the next filter in the
+/// chain will check it anyway.
+static lzma_ret
+copy_or_code(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ assert(!coder->end_was_reached);
+
+ if (coder->next.code == NULL) {
+ const size_t in_avail = in_size - *in_pos;
+
+ if (coder->is_encoder) {
+ if (action == LZMA_FINISH) {
+ // If uncompressed size is known and the
+ // amount of available input doesn't match
+ // the uncompressed size, return an error.
+ if (coder->uncompressed_size
+ != LZMA_VLI_VALUE_UNKNOWN
+ && coder->uncompressed_size
+ != in_avail)
+ return LZMA_DATA_ERROR;
+
+ } else if (coder->uncompressed_size
+ < (lzma_vli)(in_avail)) {
+ // There is too much input available.
+ return LZMA_DATA_ERROR;
+ }
+ } else {
+ // Limit in_size so that we don't copy too much.
+ if ((lzma_vli)(in_avail) > coder->uncompressed_size)
+ in_size = *in_pos + (size_t)(
+ coder->uncompressed_size);
+ }
+
+ // Store the old position so we can update uncompressed_size.
+ const size_t out_start = *out_pos;
+
+ // Copy the data
+ bufcpy(in, in_pos, in_size, out, out_pos, out_size);
+
+ // Update uncompressed_size.
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN)
+ coder->uncompressed_size -= *out_pos - out_start;
+
+ // Check if end of stream was reached.
+ if (coder->is_encoder) {
+ if (action == LZMA_FINISH && *in_pos == in_size)
+ coder->end_was_reached = true;
+ } else {
+ if (coder->uncompressed_size == 0)
+ coder->end_was_reached = true;
+ }
+
+ } else {
+ // Call the next coder in the chain to provide us some data.
+ // We don't care about uncompressed_size here, because
+ // the next filter in the chain will do it for us (since
+ // we don't change the size of the data).
+ const lzma_ret ret = coder->next.code(
+ coder->next.coder, allocator,
+ in, in_pos, in_size,
+ out, out_pos, out_size, action);
+
+ if (ret == LZMA_STREAM_END) {
+ assert(!coder->is_encoder
+ || action == LZMA_FINISH);
+ coder->end_was_reached = true;
+
+ } else if (ret != LZMA_OK) {
+ return ret;
+ }
+ }
+
+ return LZMA_OK;
+}
+
+
+static size_t
+call_filter(lzma_coder *coder, uint8_t *buffer, size_t size)
+{
+ const size_t filtered = coder->filter(coder->simple,
+ coder->now_pos, coder->is_encoder,
+ buffer, size);
+ coder->now_pos += filtered;
+ return filtered;
+}
+
+
+static lzma_ret
+simple_code(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ // Flush already filtered data from coder->buffer[] to out[].
+ if (coder->pos < coder->filtered) {
+ bufcpy(coder->buffer, &coder->pos, coder->filtered,
+ out, out_pos, out_size);
+
+ // If we couldn't flush all the filtered data, return to
+ // application immediatelly.
+ if (coder->pos < coder->filtered)
+ return LZMA_OK;
+
+ if (coder->end_was_reached) {
+ assert(coder->filtered == coder->size);
+ return LZMA_STREAM_END;
+ }
+ }
+
+ // If we get here, there is no filtered data left in the buffer.
+ coder->filtered = 0;
+
+ assert(!coder->end_was_reached);
+
+ // If there is more output space left than there is unfiltered data
+ // in coder->buffer[], flush coder->buffer[] to out[], and copy/code
+ // more data to out[] hopefully filling it completely. Then filter
+ // the data in out[]. This step is where most of the data gets
+ // filtered if the buffer sizes used by the application are reasonable.
+ const size_t out_avail = out_size - *out_pos;
+ const size_t buf_avail = coder->size - coder->pos;
+ if (out_avail > buf_avail) {
+ // Store the old position so that we know from which byte
+ // to start filtering.
+ const size_t out_start = *out_pos;
+
+ // Flush data from coder->buffer[] to out[], but don't reset
+ // coder->pos and coder->size yet. This way the coder can be
+ // restarted if the next filter in the chain returns e.g.
+ // LZMA_MEM_ERROR.
+ memcpy(out + *out_pos, coder->buffer + coder->pos, buf_avail);
+ *out_pos += buf_avail;
+
+ // Copy/Encode/Decode more data to out[].
+ {
+ const lzma_ret ret = copy_or_code(coder, allocator,
+ in, in_pos, in_size,
+ out, out_pos, out_size, action);
+ assert(ret != LZMA_STREAM_END);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ // Filter out[].
+ const size_t size = *out_pos - out_start;
+ const size_t filtered = call_filter(
+ coder, out + out_start, size);
+
+ const size_t unfiltered = size - filtered;
+ assert(unfiltered <= coder->allocated / 2);
+
+ // Now we can update coder->pos and coder->size, because
+ // the next coder in the chain (if any) was successful.
+ coder->pos = 0;
+ coder->size = unfiltered;
+
+ if (coder->end_was_reached) {
+ // The last byte has been copied to out[] already.
+ // They are left as is.
+ coder->size = 0;
+
+ } else if (unfiltered > 0) {
+ // There is unfiltered data left in out[]. Copy it to
+ // coder->buffer[] and rewind *out_pos appropriately.
+ *out_pos -= unfiltered;
+ memcpy(coder->buffer, out + *out_pos, unfiltered);
+ }
+ } else if (coder->pos > 0) {
+ memmove(coder->buffer, coder->buffer + coder->pos, buf_avail);
+ coder->size -= coder->pos;
+ coder->pos = 0;
+ }
+
+ assert(coder->pos == 0);
+
+ // If coder->buffer[] isn't empty, try to fill it by copying/decoding
+ // more data. Then filter coder->buffer[] and copy the successfully
+ // filtered data to out[]. It is probable, that some filtered and
+ // unfiltered data will be left to coder->buffer[].
+ if (coder->size > 0) {
+ {
+ const lzma_ret ret = copy_or_code(coder, allocator,
+ in, in_pos, in_size,
+ coder->buffer, &coder->size,
+ coder->allocated, action);
+ assert(ret != LZMA_STREAM_END);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ coder->filtered = call_filter(
+ coder, coder->buffer, coder->size);
+
+ // Everything is considered to be filtered if coder->buffer[]
+ // contains the last bytes of the data.
+ if (coder->end_was_reached)
+ coder->filtered = coder->size;
+
+ // Flush as much as possible.
+ bufcpy(coder->buffer, &coder->pos, coder->filtered,
+ out, out_pos, out_size);
+ }
+
+ // Check if we got everything done.
+ if (coder->end_was_reached && coder->pos == coder->size)
+ return LZMA_STREAM_END;
+
+ return LZMA_OK;
+}
+
+
+static void
+simple_coder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_free(coder->simple, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_simple_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters,
+ size_t (*filter)(lzma_simple *simple, uint32_t now_pos,
+ bool is_encoder, uint8_t *buffer, size_t size),
+ size_t simple_size, size_t unfiltered_max, bool is_encoder)
+{
+ // Allocate memory for the lzma_coder structure if needed.
+ if (next->coder == NULL) {
+ // Here we allocate space also for the temporary buffer. We
+ // need twice the size of unfiltered_max, because then it
+ // is always possible to filter at least unfiltered_max bytes
+ // more data in coder->buffer[] if it can be filled completely.
+ next->coder = lzma_alloc(sizeof(lzma_coder)
+ + 2 * unfiltered_max, allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &simple_code;
+ next->end = &simple_coder_end;
+
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ next->coder->filter = filter;
+ next->coder->allocated = 2 * unfiltered_max;
+
+ // Allocate memory for filter-specific data structure.
+ if (simple_size > 0) {
+ next->coder->simple = lzma_alloc(
+ simple_size, allocator);
+ if (next->coder->simple == NULL)
+ return LZMA_MEM_ERROR;
+ } else {
+ next->coder->simple = NULL;
+ }
+ }
+
+ if (filters[0].options != NULL) {
+ const lzma_options_simple *simple = filters[0].options;
+ next->coder->now_pos = simple->start_offset;
+ } else {
+ next->coder->now_pos = 0;
+ }
+
+ // Reset variables.
+ next->coder->is_encoder = is_encoder;
+ next->coder->end_was_reached = false;
+ next->coder->uncompressed_size = filters[0].uncompressed_size;
+ next->coder->pos = 0;
+ next->coder->filtered = 0;
+ next->coder->size = 0;
+
+ return lzma_next_filter_init(
+ &next->coder->next, allocator, filters + 1);
+}
diff --git a/src/liblzma/simple/simple_coder.h b/src/liblzma/simple/simple_coder.h
new file mode 100644
index 0000000..b682f84
--- /dev/null
+++ b/src/liblzma/simple/simple_coder.h
@@ -0,0 +1,68 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file simple_coder.h
+/// \brief Wrapper for simple filters
+//
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SIMPLE_CODER_H
+#define LZMA_SIMPLE_CODER_H
+
+#include "common.h"
+
+
+extern lzma_ret lzma_simple_x86_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_simple_x86_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+
+extern lzma_ret lzma_simple_powerpc_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_simple_powerpc_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+
+extern lzma_ret lzma_simple_ia64_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_simple_ia64_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+
+extern lzma_ret lzma_simple_arm_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_simple_arm_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+
+extern lzma_ret lzma_simple_armthumb_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_simple_armthumb_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+
+extern lzma_ret lzma_simple_sparc_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+extern lzma_ret lzma_simple_sparc_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+#endif
diff --git a/src/liblzma/simple/simple_private.h b/src/liblzma/simple/simple_private.h
new file mode 100644
index 0000000..a512396
--- /dev/null
+++ b/src/liblzma/simple/simple_private.h
@@ -0,0 +1,86 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file simple_private.h
+/// \brief Private definitions for so called simple filters
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SIMPLE_PRIVATE_H
+#define LZMA_SIMPLE_PRIVATE_H
+
+#include "simple_coder.h"
+
+
+typedef struct lzma_simple_s lzma_simple;
+
+struct lzma_coder_s {
+ /// Next filter in the chain
+ lzma_next_coder next;
+
+ /// True if the next coder in the chain has returned LZMA_STREAM_END
+ /// or if we have processed uncompressed_size bytes.
+ bool end_was_reached;
+
+ /// True if filter() should encode the data; false to decode.
+ /// Currently all simple filters use the same function for encoding
+ /// and decoding, because the difference between encoders and decoders
+ /// is very small.
+ bool is_encoder;
+
+ /// Size of the data *left* to be processed, or LZMA_VLI_VALUE_UNKNOWN
+ /// if unknown.
+ lzma_vli uncompressed_size;
+
+ /// Pointer to filter-specific function, which does
+ /// the actual filtering.
+ size_t (*filter)(lzma_simple *simple, uint32_t now_pos,
+ bool is_encoder, uint8_t *buffer, size_t size);
+
+ /// Pointer to filter-specific data, or NULL if filter doesn't need
+ /// any extra data.
+ lzma_simple *simple;
+
+ /// The lowest 32 bits of the current position in the data. Most
+ /// filters need this to do conversions between absolute and relative
+ /// addresses.
+ uint32_t now_pos;
+
+ /// Size of the memory allocated for the buffer.
+ size_t allocated;
+
+ /// Flushing position in the temporary buffer. buffer[pos] is the
+ /// next byte to be copied to out[].
+ size_t pos;
+
+ /// buffer[filtered] is the first unfiltered byte. When pos is smaller
+ /// than filtered, there is unflushed filtered data in the buffer.
+ size_t filtered;
+
+ /// Total number of bytes (both filtered and unfiltered) currently
+ /// in the temporary buffer.
+ size_t size;
+
+ /// Temporary buffer
+ uint8_t buffer[];
+};
+
+
+extern lzma_ret lzma_simple_coder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters,
+ size_t (*filter)(lzma_simple *simple, uint32_t now_pos,
+ bool is_encoder, uint8_t *buffer, size_t size),
+ size_t simple_size, size_t unfiltered_max, bool is_encoder);
+
+#endif
diff --git a/src/liblzma/simple/sparc.c b/src/liblzma/simple/sparc.c
new file mode 100644
index 0000000..09bc67f
--- /dev/null
+++ b/src/liblzma/simple/sparc.c
@@ -0,0 +1,88 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file sparc.c
+/// \brief Filter for SPARC binaries
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "simple_private.h"
+
+
+static size_t
+sparc_code(lzma_simple *simple lzma_attribute((unused)),
+ uint32_t now_pos, bool is_encoder,
+ uint8_t *buffer, size_t size)
+{
+ size_t i;
+ for (i = 0; i + 4 <= size; i += 4) {
+
+ if ((buffer[i] == 0x40 && (buffer[i + 1] & 0xC0) == 0x00)
+ || (buffer[i] == 0x7F
+ && (buffer[i + 1] & 0xC0) == 0xC0)) {
+
+ uint32_t src = ((uint32_t)buffer[i + 0] << 24)
+ | ((uint32_t)buffer[i + 1] << 16)
+ | ((uint32_t)buffer[i + 2] << 8)
+ | ((uint32_t)buffer[i + 3]);
+
+ src <<= 2;
+
+ uint32_t dest;
+ if (is_encoder)
+ dest = now_pos + (uint32_t)(i) + src;
+ else
+ dest = src - (now_pos + (uint32_t)(i));
+
+ dest >>= 2;
+
+ dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF)
+ | (dest & 0x3FFFFF)
+ | 0x40000000;
+
+ buffer[i + 0] = (uint8_t)(dest >> 24);
+ buffer[i + 1] = (uint8_t)(dest >> 16);
+ buffer[i + 2] = (uint8_t)(dest >> 8);
+ buffer[i + 3] = (uint8_t)(dest);
+ }
+ }
+
+ return i;
+}
+
+
+static lzma_ret
+sparc_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ return lzma_simple_coder_init(next, allocator, filters,
+ &sparc_code, 0, 4, is_encoder);
+}
+
+
+extern lzma_ret
+lzma_simple_sparc_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return sparc_coder_init(next, allocator, filters, true);
+}
+
+
+extern lzma_ret
+lzma_simple_sparc_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ return sparc_coder_init(next, allocator, filters, false);
+}
diff --git a/src/liblzma/simple/x86.c b/src/liblzma/simple/x86.c
new file mode 100644
index 0000000..a48a575
--- /dev/null
+++ b/src/liblzma/simple/x86.c
@@ -0,0 +1,161 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file x86.c
+/// \brief Filter for x86 binaries (BCJ filter)
+//
+// Copyright (C) 1999-2006 Igor Pavlov
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "simple_private.h"
+
+
+#define Test86MSByte(b) ((b) == 0 || (b) == 0xFF)
+
+
+struct lzma_simple_s {
+ uint32_t prev_mask;
+ uint32_t prev_pos;
+};
+
+
+static size_t
+x86_code(lzma_simple *simple, uint32_t now_pos, bool is_encoder,
+ uint8_t *buffer, size_t size)
+{
+ static const bool MASK_TO_ALLOWED_STATUS[8]
+ = { true, true, true, false, true, false, false, false };
+
+ static const uint32_t MASK_TO_BIT_NUMBER[8]
+ = { 0, 1, 2, 2, 3, 3, 3, 3 };
+
+ uint32_t prev_mask = simple->prev_mask;
+ uint32_t prev_pos = simple->prev_pos;
+
+ if (size < 5)
+ return 0;
+
+ if (now_pos - prev_pos > 5)
+ prev_pos = now_pos - 5;
+
+ const size_t limit = size - 5;
+ size_t buffer_pos = 0;
+
+ while (buffer_pos <= limit) {
+ uint8_t b = buffer[buffer_pos];
+ if (b != 0xE8 && b != 0xE9) {
+ ++buffer_pos;
+ continue;
+ }
+
+ const uint32_t offset = now_pos + (uint32_t)(buffer_pos)
+ - prev_pos;
+ prev_pos = now_pos + (uint32_t)(buffer_pos);
+
+ if (offset > 5) {
+ prev_mask = 0;
+ } else {
+ for (uint32_t i = 0; i < offset; ++i) {
+ prev_mask &= 0x77;
+ prev_mask <<= 1;
+ }
+ }
+
+ b = buffer[buffer_pos + 4];
+
+ if (Test86MSByte(b)
+ && MASK_TO_ALLOWED_STATUS[(prev_mask >> 1) & 0x7]
+ && (prev_mask >> 1) < 0x10) {
+
+ uint32_t src = ((uint32_t)(b) << 24)
+ | ((uint32_t)(buffer[buffer_pos + 3]) << 16)
+ | ((uint32_t)(buffer[buffer_pos + 2]) << 8)
+ | (buffer[buffer_pos + 1]);
+
+ uint32_t dest;
+ while (true) {
+ if (is_encoder)
+ dest = src + (now_pos + (uint32_t)(
+ buffer_pos) + 5);
+ else
+ dest = src - (now_pos + (uint32_t)(
+ buffer_pos) + 5);
+
+ if (prev_mask == 0)
+ break;
+
+ const uint32_t i = MASK_TO_BIT_NUMBER[
+ prev_mask >> 1];
+
+ b = (uint8_t)(dest >> (24 - i * 8));
+
+ if (!Test86MSByte(b))
+ break;
+
+ src = dest ^ ((1 << (32 - i * 8)) - 1);
+ }
+
+ buffer[buffer_pos + 4]
+ = (uint8_t)(~(((dest >> 24) & 1) - 1));
+ buffer[buffer_pos + 3] = (uint8_t)(dest >> 16);
+ buffer[buffer_pos + 2] = (uint8_t)(dest >> 8);
+ buffer[buffer_pos + 1] = (uint8_t)(dest);
+ buffer_pos += 5;
+ prev_mask = 0;
+
+ } else {
+ ++buffer_pos;
+ prev_mask |= 1;
+ if (Test86MSByte(b))
+ prev_mask |= 0x10;
+ }
+ }
+
+ simple->prev_mask = prev_mask;
+ simple->prev_pos = prev_pos;
+
+ return buffer_pos;
+}
+
+
+static lzma_ret
+x86_coder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters, bool is_encoder)
+{
+ const lzma_ret ret = lzma_simple_coder_init(next, allocator, filters,
+ &x86_code, sizeof(lzma_simple), 5, is_encoder);
+
+ if (ret == LZMA_OK) {
+ next->coder->simple->prev_mask = 0;
+ next->coder->simple->prev_pos = (uint32_t)(-5);
+ }
+
+ return ret;
+}
+
+
+extern lzma_ret
+lzma_simple_x86_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ return x86_coder_init(next, allocator, filters, true);
+}
+
+
+extern lzma_ret
+lzma_simple_x86_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ return x86_coder_init(next, allocator, filters, false);
+}
diff --git a/src/liblzma/subblock/Makefile.am b/src/liblzma/subblock/Makefile.am
new file mode 100644
index 0000000..8f2daf5
--- /dev/null
+++ b/src/liblzma/subblock/Makefile.am
@@ -0,0 +1,33 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+noinst_LTLIBRARIES = libsubblock.la
+libsubblock_la_SOURCES =
+libsubblock_la_CPPFLAGS = \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_srcdir@/src/liblzma/common
+
+if COND_MAIN_ENCODER
+libsubblock_la_SOURCES += \
+ subblock_encoder.c \
+ subblock_encoder.h
+endif
+
+if COND_MAIN_DECODER
+libsubblock_la_SOURCES += \
+ subblock_decoder.c \
+ subblock_decoder.h \
+ subblock_decoder_helper.c \
+ subblock_decoder_helper.h
+endif
diff --git a/src/liblzma/subblock/subblock_decoder.c b/src/liblzma/subblock/subblock_decoder.c
new file mode 100644
index 0000000..ef3c289
--- /dev/null
+++ b/src/liblzma/subblock/subblock_decoder.c
@@ -0,0 +1,681 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file subblock_decoder.c
+/// \brief Decoder of the Subblock filter
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "subblock_decoder.h"
+#include "subblock_decoder_helper.h"
+#include "raw_decoder.h"
+
+
+/// Maximum number of consecutive Subblocks with Subblock Type Padding
+#define PADDING_MAX 31
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+
+ enum {
+ SEQ_FLAGS,
+ SEQ_SIZE_1,
+ SEQ_SIZE_2,
+ SEQ_SIZE_3,
+ SEQ_DATA,
+ SEQ_REPEAT_COUNT_1,
+ SEQ_REPEAT_COUNT_2,
+ SEQ_REPEAT_COUNT_3,
+ SEQ_REPEAT_SIZE,
+ SEQ_REPEAT_READ_DATA,
+ SEQ_REPEAT_FAST,
+ SEQ_REPEAT_NORMAL,
+ SEQ_FILTER_FLAGS,
+ SEQ_FILTER_END,
+ } sequence;
+
+ /// Number of bytes left in the current Subblock Data field.
+ size_t size;
+
+ /// Uncompressed Size, or LZMA_VLI_VALUE_UNKNOWN if unknown.
+ lzma_vli uncompressed_size;
+
+ /// Number of consecutive Subblocks with Subblock Type Padding
+ uint32_t padding;
+
+ /// True when .next.code() has returned LZMA_STREAM_END.
+ bool next_finished;
+
+ /// True when the Subblock decoder has detected End of Payload Marker.
+ /// This may become true before next_finished becomes true.
+ bool this_finished;
+
+ /// True if Subfilters are allowed.
+ bool allow_subfilters;
+
+ /// Indicates if at least one byte of decoded output has been
+ /// produced after enabling Subfilter.
+ bool got_output_with_subfilter;
+
+ /// Possible subfilter
+ lzma_next_coder subfilter;
+
+ /// Filter Flags decoder is needed to parse the ID and Properties
+ /// of the subfilter.
+ lzma_next_coder filter_flags_decoder;
+
+ /// The filter_flags_decoder stores its results here.
+ lzma_options_filter filter_flags;
+
+ /// Options for the Subblock decoder helper. This is used to tell
+ /// the helper when it should return LZMA_STREAM_END to the subfilter.
+ lzma_options_subblock_helper helper;
+
+ struct {
+ /// How many times buffer should be repeated
+ size_t count;
+
+ /// Size of the buffer
+ size_t size;
+
+ /// Position in the buffer
+ size_t pos;
+
+ /// Buffer to hold the data to be repeated
+ uint8_t buffer[LZMA_SUBBLOCK_RLE_MAX];
+ } repeat;
+
+ /// Temporary buffer needed when the Subblock filter is not the last
+ /// filter in the chain. The output of the next filter is first
+ /// decoded into buffer[], which is then used as input for the actual
+ /// Subblock decoder.
+ struct {
+ size_t pos;
+ size_t size;
+ uint8_t buffer[LZMA_BUFFER_SIZE];
+ } temp;
+};
+
+
+/// Values of valid Subblock Flags
+enum {
+ FLAG_PADDING,
+ FLAG_EOPM,
+ FLAG_DATA,
+ FLAG_REPEAT,
+ FLAG_SET_SUBFILTER,
+ FLAG_END_SUBFILTER,
+};
+
+
+/// Substracts size from coder->uncompressed_size uncompressed size is known
+/// and size isn't bigger than coder->uncompressed_size.
+static inline bool
+update_uncompressed_size(lzma_coder *coder, size_t size)
+{
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ if ((lzma_vli)(size) > coder->uncompressed_size)
+ return true;
+
+ coder->uncompressed_size -= size;
+ }
+
+ return false;
+}
+
+
+/// Calls the subfilter and updates coder->uncompressed_size.
+static lzma_ret
+subfilter_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *in, size_t *in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ assert(coder->subfilter.code != NULL);
+
+ const size_t out_start = *out_pos;
+
+ // Call the subfilter.
+ const lzma_ret ret = coder->subfilter.code(
+ coder->subfilter.coder, allocator,
+ in, in_pos, in_size, out, out_pos, out_size, action);
+
+ // Update uncompressed_size.
+ if (update_uncompressed_size(coder, *out_pos - out_start))
+ return LZMA_DATA_ERROR;
+
+ return ret;
+}
+
+
+static lzma_ret
+decode_buffer(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *in, size_t *in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ while (*out_pos < out_size && (*in_pos < in_size
+ || coder->sequence == SEQ_DATA))
+ switch (coder->sequence) {
+ case SEQ_FLAGS: {
+ if ((in[*in_pos] >> 4) != FLAG_PADDING)
+ coder->padding = 0;
+
+ // Do the correct action depending on the Subblock Type.
+ switch (in[*in_pos] >> 4) {
+ case FLAG_PADDING:
+ // Only check that reserved bits are zero.
+// if (++coder->padding > PADDING_MAX
+// || in[*in_pos] & 0x0F)
+// return LZMA_DATA_ERROR;
+ ++*in_pos;
+ break;
+
+ case FLAG_EOPM:
+ // Check that reserved bits are zero.
+ if (in[*in_pos] & 0x0F)
+ return LZMA_DATA_ERROR;
+
+ // There must be no Subfilter enabled.
+ if (coder->subfilter.code != NULL)
+ return LZMA_DATA_ERROR;
+
+ // End of Payload Marker must not be used if
+ // uncompressed size is known.
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN)
+ return LZMA_DATA_ERROR;
+
+ ++*in_pos;
+ return LZMA_STREAM_END;
+
+ case FLAG_DATA:
+ // First four bits of the Subblock Data size.
+ coder->size = in[*in_pos] & 0x0F;
+ ++*in_pos;
+ coder->got_output_with_subfilter = true;
+ coder->sequence = SEQ_SIZE_1;
+ break;
+
+ case FLAG_REPEAT:
+ // First four bits of the Repeat Count. We use
+ // coder->size as a temporary place for it.
+ coder->size = in[*in_pos] & 0x0F;
+ ++*in_pos;
+ coder->got_output_with_subfilter = true;
+ coder->sequence = SEQ_REPEAT_COUNT_1;
+ break;
+
+ case FLAG_SET_SUBFILTER: {
+ if ((in[*in_pos] & 0x0F)
+ || coder->subfilter.code != NULL
+ || !coder->allow_subfilters)
+ return LZMA_DATA_ERROR;
+
+ assert(coder->filter_flags.options == NULL);
+ const lzma_ret ret = lzma_filter_flags_decoder_init(
+ &coder->filter_flags_decoder,
+ allocator, &coder->filter_flags);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->got_output_with_subfilter = false;
+
+ ++*in_pos;
+ coder->sequence = SEQ_FILTER_FLAGS;
+ break;
+ }
+
+ case FLAG_END_SUBFILTER:
+ if (coder->subfilter.code == NULL
+ || !coder->got_output_with_subfilter)
+ return LZMA_DATA_ERROR;
+
+ // Tell the helper filter to indicate End of Input
+ // to our subfilter.
+ coder->helper.end_was_reached = true;
+
+ size_t dummy = 0;
+ const lzma_ret ret = subfilter_decode(coder, allocator,
+ NULL, &dummy, 0, out, out_pos,out_size,
+ action);
+
+ // If we didn't reach the end of the subfilter's output
+ // yet, return to the application. On the next call we
+ // will get to this same switch-case again, because we
+ // haven't updated *in_pos yet.
+ if (ret != LZMA_STREAM_END)
+ return ret;
+
+ // Free Subfilter's memory. This is a bit debatable,
+ // since we could avoid some malloc()/free() calls
+ // if the same Subfilter gets used soon again. But
+ // if Subfilter isn't used again, we could leave
+ // a memory-hogging filter dangling until someone
+ // frees Subblock filter itself.
+ lzma_next_coder_end(&coder->subfilter, allocator);
+
+ // Free memory used for subfilter options. This is
+ // safe, because we don't support any Subfilter that
+ // would allow pointers in the options structure.
+ lzma_free(coder->filter_flags.options, allocator);
+ coder->filter_flags.options = NULL;
+
+ ++*in_pos;
+
+ if (coder->uncompressed_size == 0)
+ return LZMA_STREAM_END;
+
+ break;
+
+ default:
+ return LZMA_DATA_ERROR;
+ }
+
+ break;
+ }
+
+ case SEQ_SIZE_1:
+ case SEQ_REPEAT_COUNT_1:
+ // We use the same code to parse
+ // - the Size (28 bits) in Subblocks of type Data; and
+ // - the Repeat count (28 bits) in Subblocks of type
+ // Repeating Data.
+ coder->size |= (size_t)(in[*in_pos]) << 4;
+ ++*in_pos;
+ ++coder->sequence;
+ break;
+
+ case SEQ_SIZE_2:
+ case SEQ_REPEAT_COUNT_2:
+ coder->size |= (size_t)(in[*in_pos]) << 12;
+ ++*in_pos;
+ ++coder->sequence;
+ break;
+
+ case SEQ_SIZE_3:
+ case SEQ_REPEAT_COUNT_3:
+ coder->size |= (size_t)(in[*in_pos]) << 20;
+
+ // The real value is the stored value plus one.
+ ++coder->size;
+
+ ++*in_pos;
+ ++coder->sequence;
+ break;
+
+ case SEQ_REPEAT_SIZE:
+ // Move the Repeat Count to the correct variable and parse
+ // the Size of the Data to be repeated.
+ coder->repeat.count = coder->size;
+ coder->repeat.size = (size_t)(in[*in_pos]) + 1;
+ coder->repeat.pos = 0;
+ ++*in_pos;
+ coder->sequence = SEQ_REPEAT_READ_DATA;
+ break;
+
+ case SEQ_REPEAT_READ_DATA: {
+ // Fill coder->repeat.buffer[].
+ const size_t in_avail = in_size - *in_pos;
+ const size_t out_avail
+ = coder->repeat.size - coder->repeat.pos;
+ const size_t copy_size = MIN(in_avail, out_avail);
+
+ memcpy(coder->repeat.buffer + coder->repeat.pos,
+ in + *in_pos, copy_size);
+ *in_pos += copy_size;
+ coder->repeat.pos += copy_size;
+
+ if (coder->repeat.pos == coder->repeat.size) {
+ coder->repeat.pos = 0;
+
+ if (coder->repeat.size == 1
+ && coder->subfilter.code == NULL)
+ coder->sequence = SEQ_REPEAT_FAST;
+ else
+ coder->sequence = SEQ_REPEAT_NORMAL;
+ }
+
+ break;
+ }
+
+ case SEQ_REPEAT_FAST: {
+ // Optimization for cases when there is only one byte to
+ // repeat and no Subfilter.
+ const size_t out_avail = out_size - *out_pos;
+ const size_t copy_size = MIN(coder->repeat.count, out_avail);
+
+ memset(out + *out_pos, coder->repeat.buffer[0], copy_size);
+
+ *out_pos += copy_size;
+ coder->repeat.count -= copy_size;
+
+ if (update_uncompressed_size(coder, copy_size))
+ return LZMA_DATA_ERROR;
+
+ if (coder->repeat.count == 0) {
+ if (coder->uncompressed_size == 0)
+ return LZMA_STREAM_END;
+ } else {
+ return LZMA_OK;
+ }
+
+ coder->sequence = SEQ_FLAGS;
+ break;
+ }
+
+ case SEQ_REPEAT_NORMAL:
+ do {
+ // Cycle the repeat buffer if needed.
+ if (coder->repeat.pos == coder->repeat.size) {
+ if (--coder->repeat.count == 0) {
+ coder->sequence = SEQ_FLAGS;
+ break;
+ }
+
+ coder->repeat.pos = 0;
+ }
+
+ if (coder->subfilter.code == NULL) {
+ const size_t copy_size = bufcpy(
+ coder->repeat.buffer,
+ &coder->repeat.pos,
+ coder->repeat.size,
+ out, out_pos, out_size);
+
+ if (update_uncompressed_size(coder, copy_size))
+ return LZMA_DATA_ERROR;
+
+ } else {
+ const lzma_ret ret = subfilter_decode(
+ coder, allocator,
+ coder->repeat.buffer,
+ &coder->repeat.pos,
+ coder->repeat.size,
+ out, out_pos, out_size,
+ action);
+
+ if (ret == LZMA_STREAM_END) {
+ // End of Subfilter can occur only at
+ // a Subblock boundary.
+ if (coder->repeat.pos
+ != coder->repeat.size
+ || --coder->repeat
+ .count != 0)
+ return LZMA_DATA_ERROR;
+
+ // We need a Subblock with Unset
+ // Subfilter before more data.
+ coder->sequence = SEQ_FILTER_END;
+ break;
+
+ } else if (ret != LZMA_OK) {
+ return ret;
+ }
+ }
+ } while (*out_pos < out_size);
+
+ break;
+
+ case SEQ_DATA: {
+ // Limit the amount of input to match the available
+ // Subblock Data size.
+ size_t in_limit;
+ if (in_size - *in_pos > coder->size)
+ in_limit = *in_pos + coder->size;
+ else
+ in_limit = in_size;
+
+ if (coder->subfilter.code == NULL) {
+ const size_t copy_size = bufcpy(
+ in, in_pos, in_limit,
+ out, out_pos, out_size);
+
+ coder->size -= copy_size;
+
+ if (update_uncompressed_size(coder, copy_size))
+ return LZMA_DATA_ERROR;
+
+ } else {
+ const size_t in_start = *in_pos;
+ const lzma_ret ret = subfilter_decode(
+ coder, allocator,
+ in, in_pos, in_limit,
+ out, out_pos, out_size,
+ action);
+
+ // Update the number of unprocessed bytes left in
+ // this Subblock. This assert() is true because
+ // in_limit prevents *in_pos getting too big.
+ assert(*in_pos - in_start <= coder->size);
+ coder->size -= *in_pos - in_start;
+
+ if (ret == LZMA_STREAM_END) {
+ // End of Subfilter can occur only at
+ // a Subblock boundary.
+ if (coder->size != 0)
+ return LZMA_DATA_ERROR;
+
+ // We need a Subblock with Unset
+ // Subfilter before more data.
+ coder->sequence = SEQ_FILTER_END;
+ break;
+ }
+
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ // If we couldn't process the whole Subblock Data yet, return.
+ if (coder->size > 0)
+ return LZMA_OK;
+
+ // Check if we have decoded all the data.
+ if (coder->uncompressed_size == 0
+ && coder->subfilter.code == NULL)
+ return LZMA_STREAM_END;
+
+ coder->sequence = SEQ_FLAGS;
+ break;
+ }
+
+ case SEQ_FILTER_FLAGS: {
+ lzma_ret ret = coder->filter_flags_decoder.code(
+ coder->filter_flags_decoder.coder, allocator,
+ in, in_pos, in_size, NULL, NULL, 0, LZMA_RUN);
+ if (ret != LZMA_STREAM_END)
+ return ret == LZMA_HEADER_ERROR
+ ? LZMA_DATA_ERROR : ret;
+
+ // Don't free the filter_flags_decoder. It doesn't take much
+ // memory and we may need it again.
+
+ // Initialize the Subfilter. Subblock and Copy filters are
+ // not allowed.
+ if (coder->filter_flags.id == LZMA_FILTER_COPY
+ || coder->filter_flags.id
+ == LZMA_FILTER_SUBBLOCK)
+ return LZMA_DATA_ERROR;
+
+ coder->helper.end_was_reached = false;
+
+ lzma_options_filter filters[3] = {
+ {
+ .id = coder->filter_flags.id,
+ .options = coder->filter_flags.options,
+ }, {
+ .id = LZMA_FILTER_SUBBLOCK_HELPER,
+ .options = &coder->helper,
+ }, {
+ .id = LZMA_VLI_VALUE_UNKNOWN,
+ .options = NULL,
+ }
+ };
+
+ // Optimization: We know that LZMA uses End of Payload Marker
+ // (not End of Input), so we can omit the helper filter.
+ if (filters[0].id == LZMA_FILTER_LZMA)
+ filters[1].id = LZMA_VLI_VALUE_UNKNOWN;
+
+ ret = lzma_raw_decoder_init(&coder->subfilter, allocator,
+ filters, LZMA_VLI_VALUE_UNKNOWN, false);
+ if (ret != LZMA_OK)
+ return ret;
+
+ coder->sequence = SEQ_FLAGS;
+ break;
+ }
+
+ case SEQ_FILTER_END:
+ // We are in the beginning of a Subblock. The next Subblock
+ // whose type is not Padding, must indicate end of Subfilter.
+ if (in[*in_pos] == (FLAG_PADDING << 4)) {
+ ++*in_pos;
+ break;
+ }
+
+ if (in[*in_pos] != (FLAG_END_SUBFILTER << 4))
+ return LZMA_DATA_ERROR;
+
+ coder->sequence = SEQ_FLAGS;
+ break;
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+subblock_decode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ if (coder->next.code == NULL)
+ return decode_buffer(coder, allocator, in, in_pos, in_size,
+ out, out_pos, out_size, action);
+
+ while (*out_pos < out_size) {
+ if (!coder->next_finished
+ && coder->temp.pos == coder->temp.size) {
+ coder->temp.pos = 0;
+ coder->temp.size = 0;
+
+ const lzma_ret ret = coder->next.code(
+ coder->next.coder,
+ allocator, in, in_pos, in_size,
+ coder->temp.buffer, &coder->temp.size,
+ LZMA_BUFFER_SIZE, action);
+
+ if (ret == LZMA_STREAM_END)
+ coder->next_finished = true;
+ else if (coder->temp.size == 0 || ret != LZMA_OK)
+ return ret;
+ }
+
+ if (coder->this_finished) {
+ if (coder->temp.pos != coder->temp.size)
+ return LZMA_DATA_ERROR;
+
+ if (coder->next_finished)
+ return LZMA_STREAM_END;
+
+ return LZMA_OK;
+ }
+
+ const lzma_ret ret = decode_buffer(coder, allocator,
+ coder->temp.buffer, &coder->temp.pos,
+ coder->temp.size,
+ out, out_pos, out_size, action);
+
+ if (ret == LZMA_STREAM_END)
+ // The next coder in the chain hasn't finished
+ // yet. If the input data is valid, there
+ // must be no more output coming, but the
+ // next coder may still need a litle more
+ // input to detect End of Payload Marker.
+ coder->this_finished = true;
+ else if (ret != LZMA_OK)
+ return ret;
+ else if (coder->next_finished && *out_pos < out_size)
+ return LZMA_DATA_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+subblock_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_next_coder_end(&coder->subfilter, allocator);
+ lzma_next_coder_end(&coder->filter_flags_decoder, allocator);
+ lzma_free(coder->filter_flags.options, allocator);
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_subblock_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ next->coder->subfilter = LZMA_NEXT_CODER_INIT;
+ next->coder->filter_flags_decoder = LZMA_NEXT_CODER_INIT;
+
+ } else {
+ lzma_next_coder_end(&next->coder->subfilter, allocator);
+ lzma_free(next->coder->filter_flags.options, allocator);
+ }
+
+ next->coder->filter_flags.options = NULL;
+
+ next->coder->sequence = SEQ_FLAGS;
+ next->coder->uncompressed_size = filters[0].uncompressed_size;
+ next->coder->padding = 0;
+ next->coder->next_finished = false;
+ next->coder->this_finished = false;
+ next->coder->temp.pos = 0;
+ next->coder->temp.size = 0;
+
+ if (filters[0].options != NULL)
+ next->coder->allow_subfilters = ((lzma_options_subblock *)(
+ filters[0].options))->allow_subfilters;
+ else
+ next->coder->allow_subfilters = false;
+
+ {
+ const lzma_ret ret = lzma_next_filter_init(&next->coder->next,
+ allocator, filters + 1);
+ if (ret != LZMA_OK) {
+ subblock_decoder_end(next->coder, allocator);
+ return ret;
+ }
+ }
+
+ next->code = &subblock_decode;
+ next->end = &subblock_decoder_end;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/subblock/subblock_decoder.h b/src/liblzma/subblock/subblock_decoder.h
new file mode 100644
index 0000000..724ef35
--- /dev/null
+++ b/src/liblzma/subblock/subblock_decoder.h
@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file subblock_decoder.h
+/// \brief Decoder of the Subblock filter
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SUBBLOCK_DECODER_H
+#define LZMA_SUBBLOCK_DECODER_H
+
+#include "common.h"
+
+
+extern lzma_ret lzma_subblock_decoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+#endif
diff --git a/src/liblzma/subblock/subblock_decoder_helper.c b/src/liblzma/subblock/subblock_decoder_helper.c
new file mode 100644
index 0000000..5ff2443
--- /dev/null
+++ b/src/liblzma/subblock/subblock_decoder_helper.c
@@ -0,0 +1,80 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file subblock_decoder_helper.c
+/// \brief Helper filter for the Subblock decoder
+///
+/// This filter is used to indicate End of Input for subfilters needing it.
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "subblock_decoder_helper.h"
+
+
+struct lzma_coder_s {
+ const lzma_options_subblock_helper *options;
+};
+
+
+static lzma_ret
+helper_decode(lzma_coder *coder,
+ lzma_allocator *allocator lzma_attribute((unused)),
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size,
+ lzma_action action lzma_attribute((unused)))
+{
+ // If end_was_reached is true, we cannot have any input.
+ assert(!coder->options->end_was_reached || *in_pos == in_size);
+
+ // We can safely copy as much as possible, because we are never
+ // given more data than a single Subblock Data field.
+ bufcpy(in, in_pos, in_size, out, out_pos, out_size);
+
+ // Return LZMA_STREAM_END when instructed so by the Subblock decoder.
+ return coder->options->end_was_reached ? LZMA_STREAM_END : LZMA_OK;
+}
+
+
+static void
+helper_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_free(coder, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_subblock_decoder_helper_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters)
+{
+ // This is always the last filter in the chain.
+ assert(filters[1].init == NULL);
+
+ // We never know uncompressed size.
+ assert(filters[0].uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->code = &helper_decode;
+ next->end = helper_end;
+ }
+
+ next->coder->options = filters[0].options;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/subblock/subblock_decoder_helper.h b/src/liblzma/subblock/subblock_decoder_helper.h
new file mode 100644
index 0000000..2a3e999
--- /dev/null
+++ b/src/liblzma/subblock/subblock_decoder_helper.h
@@ -0,0 +1,36 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file subblock_decoder_helper.h
+/// \brief Helper filter for the Subblock decoder
+///
+/// This filter is used to indicate End of Input for subfilters needing it.
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SUBBLOCK_DECODER_HELPER_H
+#define LZMA_SUBBLOCK_DECODER_HELPER_H
+
+#include "common.h"
+
+
+typedef struct {
+ bool end_was_reached;
+} lzma_options_subblock_helper;
+
+
+extern lzma_ret lzma_subblock_decoder_helper_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+#endif
diff --git a/src/liblzma/subblock/subblock_encoder.c b/src/liblzma/subblock/subblock_encoder.c
new file mode 100644
index 0000000..9fa95b2
--- /dev/null
+++ b/src/liblzma/subblock/subblock_encoder.c
@@ -0,0 +1,841 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file subblock_encoder.c
+/// \brief Encoder of the Subblock filter
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "subblock_encoder.h"
+#include "raw_encoder.h"
+
+
+#define REPEAT_COUNT_MAX (1U << 28)
+
+/// Number of bytes the data chunk being repeated must be before we care
+/// about alignment. This is somewhat arbitrary. It just doesn't make sense
+/// to waste bytes for alignment when the data chunk is very small.
+///
+/// TODO Rename and use this also for Subblock Data?
+#define RLE_MIN_SIZE_FOR_ALIGN 3
+
+#define write_byte(b) \
+do { \
+ out[*out_pos] = b; \
+ ++*out_pos; \
+ ++coder->alignment.out_pos; \
+} while (0)
+
+
+struct lzma_coder_s {
+ lzma_next_coder next;
+ bool next_finished;
+
+ enum {
+ SEQ_FILL,
+ SEQ_FLUSH,
+ SEQ_RLE_COUNT_0,
+ SEQ_RLE_COUNT_1,
+ SEQ_RLE_COUNT_2,
+ SEQ_RLE_COUNT_3,
+ SEQ_RLE_SIZE,
+ SEQ_RLE_DATA,
+ SEQ_DATA_SIZE_0,
+ SEQ_DATA_SIZE_1,
+ SEQ_DATA_SIZE_2,
+ SEQ_DATA_SIZE_3,
+ SEQ_DATA,
+ SEQ_SUBFILTER_INIT,
+ SEQ_SUBFILTER_FLAGS,
+ } sequence;
+
+ lzma_options_subblock *options;
+
+ lzma_vli uncompressed_size;
+
+ size_t pos;
+ uint32_t tmp;
+
+ struct {
+ uint32_t multiple;
+ uint32_t in_pending;
+ uint32_t in_pos;
+ uint32_t out_pos;
+ } alignment;
+
+ struct {
+ uint8_t *data;
+ size_t size;
+ size_t limit;
+ } subblock;
+
+ struct {
+ uint8_t buffer[LZMA_SUBBLOCK_RLE_MAX];
+ size_t size;
+ lzma_vli count;
+ } rle;
+
+ struct {
+ enum {
+ SUB_NONE,
+ SUB_SET,
+ SUB_RUN,
+ SUB_FINISH,
+ SUB_END_MARKER,
+ } mode;
+
+ bool got_input;
+
+ uint8_t *flags;
+ size_t flags_size;
+
+ lzma_next_coder subcoder;
+
+ } subfilter;
+
+ struct {
+ size_t pos;
+ size_t size;
+ uint8_t buffer[LZMA_BUFFER_SIZE];
+ } temp;
+};
+
+
+/// \brief Aligns the output buffer
+///
+/// Aligns the output buffer so that after skew bytes the output position is
+/// a multiple of coder->alignment.multiple.
+static bool
+subblock_align(lzma_coder *coder, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, uint32_t skew)
+{
+ assert(*out_pos < out_size);
+
+ const uint32_t target = coder->alignment.in_pos
+ % coder->alignment.multiple;
+
+ while ((coder->alignment.out_pos + skew)
+ % coder->alignment.multiple != target) {
+ // Zero indicates padding.
+ write_byte(0x00);
+
+ // Check if output buffer got full and indicate it to
+ // the caller.
+ if (*out_pos == out_size)
+ return true;
+ }
+
+ coder->alignment.in_pos += coder->alignment.in_pending;
+ coder->alignment.in_pending = 0;
+
+ // Output buffer is not full.
+ return false;
+}
+
+
+/// \brief Checks if buffer contains repeated data
+///
+/// \param needle Buffer containing a single repeat chunk
+/// \param needle_size Size of needle in bytes
+/// \param buf Buffer to search for repeated needles
+/// \param buf_chunks Buffer size is buf_chunks * needle_size.
+///
+/// \return True if the whole buf is filled with repeated needles.
+///
+static bool
+is_repeating(const uint8_t *restrict needle, size_t needle_size,
+ const uint8_t *restrict buf, size_t buf_chunks)
+{
+ while (buf_chunks-- != 0) {
+ if (memcmp(buf, needle, needle_size) != 0)
+ return false;
+
+ buf += needle_size;
+ }
+
+ return true;
+}
+
+
+/// \brief Optimizes the repeating style and updates coder->sequence
+static void
+subblock_rle_flush(lzma_coder *coder)
+{
+ // The Subblock decoder can use memset() when the size of the data
+ // being repeated is one byte, so we check if the RLE buffer is
+ // filled with a single repeating byte.
+ if (coder->rle.size > 1) {
+ const uint8_t b = coder->rle.buffer[0];
+ size_t i = 0;
+ while (true) {
+ if (coder->rle.buffer[i] != b)
+ break;
+
+ if (++i == coder->rle.size) {
+ // TODO Integer overflow check maybe,
+ // although this needs at least 2**63 bytes
+ // of input until it gets triggered...
+ coder->rle.count *= coder->rle.size;
+ coder->rle.size = 1;
+ break;
+ }
+ }
+ }
+
+ if (coder->rle.count > REPEAT_COUNT_MAX)
+ coder->tmp = REPEAT_COUNT_MAX - 1;
+ else
+ coder->tmp = coder->rle.count - 1;
+
+ coder->sequence = SEQ_RLE_COUNT_0;
+
+ return;
+}
+
+
+/// \brief Resizes coder->subblock.data for a new size limit
+static lzma_ret
+subblock_data_size(lzma_coder *coder, lzma_allocator *allocator,
+ size_t new_limit)
+{
+ // Verify that the new limit is valid.
+ if (new_limit < LZMA_SUBBLOCK_DATA_SIZE_MIN
+ || new_limit > LZMA_SUBBLOCK_DATA_SIZE_MAX)
+ return LZMA_HEADER_ERROR;
+
+ // Ff the new limit is different than the previous one, we need
+ // to reallocate the data buffer.
+ if (new_limit != coder->subblock.limit) {
+ lzma_free(coder->subblock.data, allocator);
+ coder->subblock.data = lzma_alloc(new_limit, allocator);
+ if (coder->subblock.data == NULL)
+ return LZMA_MEM_ERROR;
+ }
+
+ coder->subblock.limit = new_limit;
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+subblock_buffer(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ // Verify that there is a sane amount of input.
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN) {
+ const lzma_vli in_avail = in_size - *in_pos;
+ if (action == LZMA_FINISH) {
+ if (in_avail != coder->uncompressed_size)
+ return LZMA_DATA_ERROR;
+ } else {
+ if (in_avail > coder->uncompressed_size)
+ return LZMA_DATA_ERROR;
+ }
+ }
+
+ // Check if we need to do something special with the Subfilter.
+ if (coder->options != NULL && coder->options->allow_subfilters) {
+ switch (coder->options->subfilter_mode) {
+ case LZMA_SUBFILTER_NONE:
+ if (coder->subfilter.mode != SUB_NONE)
+ return LZMA_PROG_ERROR;
+ break;
+
+ case LZMA_SUBFILTER_SET:
+ if (coder->subfilter.mode != SUB_NONE)
+ return LZMA_HEADER_ERROR;
+
+ coder->subfilter.mode = SUB_SET;
+ coder->subfilter.got_input = false;
+
+ if (coder->sequence == SEQ_FILL)
+ coder->sequence = SEQ_FLUSH;
+
+ break;
+
+ case LZMA_SUBFILTER_RUN:
+ if (coder->subfilter.mode != SUB_RUN)
+ return LZMA_PROG_ERROR;
+ break;
+
+ case LZMA_SUBFILTER_FINISH:
+ if (coder->subfilter.mode == SUB_RUN)
+ coder->subfilter.mode = SUB_FINISH;
+ else if (coder->subfilter.mode != SUB_FINISH)
+ return LZMA_PROG_ERROR;
+
+ if (!coder->subfilter.got_input)
+ return LZMA_PROG_ERROR;
+
+ break;
+
+ default:
+ return LZMA_HEADER_ERROR;
+ }
+ }
+
+ // Main loop
+ while (*out_pos < out_size)
+ switch (coder->sequence) {
+ case SEQ_FILL: {
+ // Grab the new Subblock Data Size and reallocate the buffer.
+ if (coder->subblock.size == 0 && coder->options != NULL
+ && coder->options->subblock_data_size
+ != coder->subblock.limit) {
+ const lzma_ret ret = subblock_data_size(coder,
+ allocator, coder->options
+ ->subblock_data_size);
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ if (coder->subfilter.mode == SUB_NONE) {
+ assert(coder->subfilter.subcoder.code == NULL);
+
+ // No Subfilter is enabled, just copy the data as is.
+ // NOTE: uncompressed_size cannot overflow because we
+ // have checked/ it in the beginning of this function.
+ const size_t in_used = bufcpy(in, in_pos, in_size,
+ coder->subblock.data,
+ &coder->subblock.size,
+ coder->subblock.limit);
+
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN)
+ coder->uncompressed_size -= in_used;
+
+ coder->alignment.in_pending += in_used;
+
+ } else {
+ const size_t in_start = *in_pos;
+ lzma_ret ret;
+
+ if (coder->subfilter.mode == SUB_FINISH) {
+ // Let the Subfilter write out pending data,
+ // but don't give it any new input anymore.
+ size_t dummy = 0;
+ ret = coder->subfilter.subcoder.code(coder
+ ->subfilter.subcoder.coder,
+ allocator, NULL, &dummy, 0,
+ coder->subblock.data,
+ &coder->subblock.size,
+ coder->subblock.limit,
+ LZMA_FINISH);
+ } else {
+ // Give our input data to the Subfilter. Note
+ // that action can be LZMA_FINISH. In that
+ // case, we filter everything until the end
+ // of the input. The application isn't required
+ // to separately set LZMA_SUBBLOCK_FINISH.
+ ret = coder->subfilter.subcoder.code(coder
+ ->subfilter.subcoder.coder,
+ allocator, in, in_pos, in_size,
+ coder->subblock.data,
+ &coder->subblock.size,
+ coder->subblock.limit,
+ action);
+ }
+
+ const size_t in_used = *in_pos - in_start;
+
+ if (in_used > 0)
+ coder->subfilter.got_input = true;
+
+ // NOTE: uncompressed_size cannot overflow because we
+ // have checked it in the beginning of this function.
+ if (coder->uncompressed_size != LZMA_VLI_VALUE_UNKNOWN)
+ coder->uncompressed_size -= *in_pos - in_start;
+
+ coder->alignment.in_pending += in_used;
+
+ if (ret == LZMA_STREAM_END) {
+ // We don't strictly need to do this, but
+ // doing it sounds like a good idea, because
+ // otherwise the Subfilter's memory could be
+ // left allocated for long time, and would
+ // just waste memory.
+ lzma_next_coder_end(&coder->subfilter.subcoder,
+ allocator);
+
+ assert(coder->options != NULL);
+ coder->options->subfilter_mode
+ = LZMA_SUBFILTER_NONE;
+
+ assert(coder->subfilter.mode == SUB_FINISH
+ || action == LZMA_FINISH);
+ coder->subfilter.mode = SUB_END_MARKER;
+
+ // Flush now. Even if coder->subblock.size
+ // happens to be zero, we still need to go
+ // to SEQ_FLUSH to write the Subfilter Unset
+ // indicator.
+ coder->sequence = SEQ_FLUSH;
+ break;
+ }
+
+ // Return if an error occurred.
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ // If we ran out of input before the whole buffer
+ // was filled, return to application.
+ if (coder->subblock.size < coder->subblock.limit
+ && action != LZMA_FINISH)
+ return LZMA_OK;
+
+ coder->sequence = SEQ_FLUSH;
+ }
+
+ // Fall through
+
+ case SEQ_FLUSH:
+ if (coder->options != NULL) {
+ // Update the alignment variable.
+ coder->alignment.multiple = coder->options->alignment;
+ if (coder->alignment.multiple
+ < LZMA_SUBBLOCK_ALIGNMENT_MIN
+ || coder->alignment.multiple
+ > LZMA_SUBBLOCK_ALIGNMENT_MAX)
+ return LZMA_HEADER_ERROR;
+
+ // Run-length encoder
+ //
+ // First check if there is some data pending and we
+ // have an obvious need to flush it immediatelly.
+ if (coder->rle.count > 0
+ && (coder->rle.size
+ != coder->options->rle
+ || coder->subblock.size
+ % coder->rle.size)) {
+ subblock_rle_flush(coder);
+ break;
+ }
+
+ // Grab the (possibly new) RLE chunk size and
+ // validate it.
+ coder->rle.size = coder->options->rle;
+ if (coder->rle.size > LZMA_SUBBLOCK_RLE_MAX)
+ return LZMA_HEADER_ERROR;
+
+ if (coder->subblock.size != 0
+ && coder->rle.size
+ != LZMA_SUBBLOCK_RLE_OFF
+ && coder->subblock.size
+ % coder->rle.size == 0) {
+
+ // Initialize coder->rle.buffer if we don't
+ // have RLE already running.
+ if (coder->rle.count == 0)
+ memcpy(coder->rle.buffer,
+ coder->subblock.data,
+ coder->rle.size);
+
+ // Test if coder->subblock.data is repeating.
+ const size_t count = coder->subblock.size
+ / coder->rle.size;
+ if (is_repeating(coder->rle.buffer,
+ coder->rle.size,
+ coder->subblock.data, count)) {
+ if (LZMA_VLI_VALUE_MAX - count
+ < coder->rle.count)
+ return LZMA_PROG_ERROR;
+
+ coder->rle.count += count;
+ coder->subblock.size = 0;
+
+ } else if (coder->rle.count > 0) {
+ // It's not repeating or at least not
+ // with the same byte sequence as the
+ // earlier Subblock Data buffers. We
+ // have some data pending in the RLE
+ // buffer already, so do a flush.
+ // Once flushed, we will check again
+ // if the Subblock Data happens to
+ // contain a different repeating
+ // sequence.
+ subblock_rle_flush(coder);
+ break;
+ }
+ }
+ }
+
+ // If we now have some data left in coder->subblock, the RLE
+ // buffer is empty and we must write a regular Subblock Data.
+ if (coder->subblock.size > 0) {
+ assert(coder->rle.count == 0);
+ coder->tmp = coder->subblock.size - 1;
+ coder->sequence = SEQ_DATA_SIZE_0;
+ break;
+ }
+
+ // Check if we should enable Subfilter.
+ if (coder->subfilter.mode == SUB_SET) {
+ if (coder->rle.count > 0)
+ subblock_rle_flush(coder);
+ else
+ coder->sequence = SEQ_SUBFILTER_INIT;
+ break;
+ }
+
+ // Check if we have just finished Subfiltering.
+ if (coder->subfilter.mode == SUB_END_MARKER) {
+ if (coder->rle.count > 0) {
+ subblock_rle_flush(coder);
+ break;
+ }
+
+ write_byte(0x50);
+ coder->subfilter.mode = SUB_NONE;
+ if (*out_pos == out_size)
+ return LZMA_OK;
+ }
+
+ // Check if we have already written everything.
+ if (action == LZMA_FINISH && *in_pos == in_size
+ && coder->subfilter.mode == SUB_NONE) {
+ if (coder->rle.count > 0) {
+ subblock_rle_flush(coder);
+ break;
+ }
+
+ if (coder->uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN) {
+ // NOTE: No need to use write_byte() here
+ // since we are finishing.
+ out[*out_pos] = 0x10;
+ ++*out_pos;
+ } else if (coder->uncompressed_size != 0) {
+ return LZMA_DATA_ERROR;
+ }
+
+ return LZMA_STREAM_END;
+ }
+
+ // Otherwise we have more work to do.
+ coder->sequence = SEQ_FILL;
+ break;
+
+ case SEQ_RLE_COUNT_0:
+ // Make the Data field properly aligned, but only if the data
+ // chunk to be repeated isn't extremely small. We have four
+ // bytes for Count and one byte for Size, thus the number five.
+ if (coder->rle.size >= RLE_MIN_SIZE_FOR_ALIGN
+ && subblock_align(
+ coder, out, out_pos, out_size, 5))
+ return LZMA_OK;
+
+ assert(coder->rle.count > 0);
+
+ write_byte(0x30 | (coder->tmp & 0x0F));
+
+ coder->sequence = SEQ_RLE_COUNT_1;
+ break;
+
+ case SEQ_RLE_COUNT_1:
+ write_byte(coder->tmp >> 4);
+ coder->sequence = SEQ_RLE_COUNT_2;
+ break;
+
+ case SEQ_RLE_COUNT_2:
+ write_byte(coder->tmp >> 12);
+ coder->sequence = SEQ_RLE_COUNT_3;
+ break;
+
+ case SEQ_RLE_COUNT_3:
+ write_byte(coder->tmp >> 20);
+
+ if (coder->rle.count > REPEAT_COUNT_MAX)
+ coder->rle.count -= REPEAT_COUNT_MAX;
+ else
+ coder->rle.count = 0;
+
+ coder->sequence = SEQ_RLE_SIZE;
+ break;
+
+ case SEQ_RLE_SIZE:
+ assert(coder->rle.size >= LZMA_SUBBLOCK_RLE_MIN);
+ assert(coder->rle.size <= LZMA_SUBBLOCK_RLE_MAX);
+ write_byte(coder->rle.size - 1);
+ coder->sequence = SEQ_RLE_DATA;
+ break;
+
+ case SEQ_RLE_DATA:
+ bufcpy(coder->rle.buffer, &coder->pos, coder->rle.size,
+ out, out_pos, out_size);
+ if (coder->pos < coder->rle.size)
+ return LZMA_OK;
+
+ coder->alignment.out_pos += coder->rle.size;
+
+ coder->pos = 0;
+ coder->sequence = SEQ_FLUSH;
+ break;
+
+ case SEQ_DATA_SIZE_0:
+ // We need four bytes for the Size field.
+ if (subblock_align(coder, out, out_pos, out_size, 4))
+ return LZMA_OK;
+
+ write_byte(0x20 | (coder->tmp & 0x0F));
+ coder->sequence = SEQ_DATA_SIZE_1;
+ break;
+
+ case SEQ_DATA_SIZE_1:
+ write_byte(coder->tmp >> 4);
+ coder->sequence = SEQ_DATA_SIZE_2;
+ break;
+
+ case SEQ_DATA_SIZE_2:
+ write_byte(coder->tmp >> 12);
+ coder->sequence = SEQ_DATA_SIZE_3;
+ break;
+
+ case SEQ_DATA_SIZE_3:
+ write_byte(coder->tmp >> 20);
+ coder->sequence = SEQ_DATA;
+ break;
+
+ case SEQ_DATA:
+ bufcpy(coder->subblock.data, &coder->pos,
+ coder->subblock.size, out, out_pos, out_size);
+ if (coder->pos < coder->subblock.size)
+ return LZMA_OK;
+
+ coder->alignment.out_pos += coder->subblock.size;
+
+ coder->subblock.size = 0;
+ coder->pos = 0;
+ coder->sequence = SEQ_FLUSH;
+ break;
+
+ case SEQ_SUBFILTER_INIT: {
+ assert(coder->subblock.size == 0);
+ assert(coder->rle.count == 0);
+ assert(coder->subfilter.mode == SUB_SET);
+ assert(coder->options != NULL);
+
+ // There must be a filter specified.
+ if (coder->options->subfilter_options.id
+ == LZMA_VLI_VALUE_UNKNOWN)
+ return LZMA_HEADER_ERROR;
+
+ // Initialize a raw encoder to work as a Subfilter.
+ lzma_options_filter options[2];
+ options[0] = coder->options->subfilter_options;
+ options[1].id = LZMA_VLI_VALUE_UNKNOWN;
+
+ lzma_ret ret = lzma_raw_encoder_init(
+ &coder->subfilter.subcoder, allocator,
+ options, LZMA_VLI_VALUE_UNKNOWN, false);
+ if (ret != LZMA_OK)
+ return ret;
+
+ // Encode the Filter Flags field into a buffer. This should
+ // never fail since we have already successfully initialized
+ // the Subfilter itself. Check it still, and return
+ // LZMA_PROG_ERROR instead of whatever the ret would say.
+ ret = lzma_filter_flags_size(
+ &coder->subfilter.flags_size, options);
+ assert(ret == LZMA_OK);
+ if (ret != LZMA_OK)
+ return LZMA_PROG_ERROR;
+
+ coder->subfilter.flags = lzma_alloc(
+ coder->subfilter.flags_size, allocator);
+ if (coder->subfilter.flags == NULL)
+ return LZMA_MEM_ERROR;
+
+ // Now we have a big-enough buffer. Encode the Filter Flags.
+ // Like above, this should never fail.
+ size_t dummy = 0;
+ ret = lzma_filter_flags_encode(coder->subfilter.flags,
+ &dummy, coder->subfilter.flags_size, options);
+ assert(ret == LZMA_OK);
+ assert(dummy == coder->subfilter.flags_size);
+ if (ret != LZMA_OK || dummy != coder->subfilter.flags_size)
+ return LZMA_PROG_ERROR;
+
+ // Write a Subblock indicating a new Subfilter.
+ write_byte(0x40);
+
+ coder->options->subfilter_mode = LZMA_SUBFILTER_RUN;
+ coder->subfilter.mode = SUB_RUN;
+ coder->sequence = SEQ_SUBFILTER_FLAGS;
+ }
+
+ // Fall through
+
+ case SEQ_SUBFILTER_FLAGS:
+ // Copy the Filter Flags to the output stream.
+ bufcpy(coder->subfilter.flags, &coder->pos,
+ coder->subfilter.flags_size,
+ out, out_pos, out_size);
+ if (coder->pos < coder->subfilter.flags_size)
+ return LZMA_OK;
+
+ lzma_free(coder->subfilter.flags, allocator);
+ coder->subfilter.flags = NULL;
+
+ coder->pos = 0;
+ coder->sequence = SEQ_FILL;
+ break;
+
+ default:
+ return LZMA_PROG_ERROR;
+ }
+
+ return LZMA_OK;
+}
+
+
+static lzma_ret
+subblock_encode(lzma_coder *coder, lzma_allocator *allocator,
+ const uint8_t *restrict in, size_t *restrict in_pos,
+ size_t in_size, uint8_t *restrict out,
+ size_t *restrict out_pos, size_t out_size, lzma_action action)
+{
+ if (coder->next.code == NULL)
+ return subblock_buffer(coder, allocator, in, in_pos, in_size,
+ out, out_pos, out_size, action);
+
+ while (*out_pos < out_size
+ && (*in_pos < in_size || action == LZMA_FINISH)) {
+ if (!coder->next_finished
+ && coder->temp.pos == coder->temp.size) {
+ coder->temp.pos = 0;
+ coder->temp.size = 0;
+
+ const lzma_ret ret = coder->next.code(coder->next.coder,
+ allocator, in, in_pos, in_size,
+ coder->temp.buffer, &coder->temp.size,
+ LZMA_BUFFER_SIZE, action);
+ if (ret == LZMA_STREAM_END) {
+ assert(action == LZMA_FINISH);
+ coder->next_finished = true;
+ } else if (coder->temp.size == 0 || ret != LZMA_OK) {
+ return ret;
+ }
+ }
+
+ const lzma_ret ret = subblock_buffer(coder, allocator,
+ coder->temp.buffer, &coder->temp.pos,
+ coder->temp.size, out, out_pos, out_size,
+ coder->next_finished ? LZMA_FINISH : LZMA_RUN);
+ if (ret == LZMA_STREAM_END) {
+ assert(action == LZMA_FINISH);
+ assert(coder->next_finished);
+ return LZMA_STREAM_END;
+ }
+
+ if (ret != LZMA_OK)
+ return ret;
+ }
+
+ return LZMA_OK;
+}
+
+
+static void
+subblock_encoder_end(lzma_coder *coder, lzma_allocator *allocator)
+{
+ lzma_next_coder_end(&coder->next, allocator);
+ lzma_next_coder_end(&coder->subfilter.subcoder, allocator);
+ lzma_free(coder->subblock.data, allocator);
+ lzma_free(coder->subfilter.flags, allocator);
+ return;
+}
+
+
+extern lzma_ret
+lzma_subblock_encoder_init(lzma_next_coder *next, lzma_allocator *allocator,
+ const lzma_filter_info *filters)
+{
+ if (next->coder == NULL) {
+ next->coder = lzma_alloc(sizeof(lzma_coder), allocator);
+ if (next->coder == NULL)
+ return LZMA_MEM_ERROR;
+
+ next->coder->next = LZMA_NEXT_CODER_INIT;
+ next->coder->subblock.data = NULL;
+ next->coder->subblock.limit = 0;
+ next->coder->subfilter.subcoder = LZMA_NEXT_CODER_INIT;
+ } else {
+ lzma_next_coder_end(&next->coder->subfilter.subcoder,
+ allocator);
+ lzma_free(next->coder->subfilter.flags, allocator);
+ }
+
+ next->coder->subfilter.flags = NULL;
+
+ next->coder->next_finished = false;
+ next->coder->sequence = SEQ_FILL;
+ next->coder->options = filters[0].options;
+ next->coder->uncompressed_size = filters[0].uncompressed_size;
+ next->coder->pos = 0;
+
+ next->coder->alignment.in_pending = 0;
+ next->coder->alignment.in_pos = 0;
+ next->coder->alignment.out_pos = 0;
+ next->coder->subblock.size = 0;
+ next->coder->rle.count = 0;
+ next->coder->subfilter.mode = SUB_NONE;
+
+ next->coder->temp.pos = 0;
+ next->coder->temp.size = 0;
+
+ // Grab some values from the options structure if it is available.
+ size_t subblock_size_limit;
+ if (next->coder->options != NULL) {
+ if (next->coder->options->alignment
+ < LZMA_SUBBLOCK_ALIGNMENT_MIN
+ || next->coder->options->alignment
+ > LZMA_SUBBLOCK_ALIGNMENT_MAX) {
+ subblock_encoder_end(next->coder, allocator);
+ return LZMA_HEADER_ERROR;
+ }
+ next->coder->alignment.multiple
+ = next->coder->options->alignment;
+ subblock_size_limit = next->coder->options->subblock_data_size;
+ } else {
+ next->coder->alignment.multiple
+ = LZMA_SUBBLOCK_ALIGNMENT_DEFAULT;
+ subblock_size_limit = LZMA_SUBBLOCK_DATA_SIZE_DEFAULT;
+ }
+
+ {
+ const lzma_ret ret = subblock_data_size(next->coder, allocator,
+ subblock_size_limit);
+ if (ret != LZMA_OK) {
+ subblock_encoder_end(next->coder, allocator);
+ return ret;
+ }
+ }
+
+ {
+ const lzma_ret ret = lzma_next_filter_init(&next->coder->next,
+ allocator, filters + 1);
+ if (ret != LZMA_OK) {
+ subblock_encoder_end(next->coder, allocator);
+ return ret;
+ }
+ }
+
+ next->code = &subblock_encode;
+ next->end = &subblock_encoder_end;
+
+ return LZMA_OK;
+}
diff --git a/src/liblzma/subblock/subblock_encoder.h b/src/liblzma/subblock/subblock_encoder.h
new file mode 100644
index 0000000..3ef9e2e
--- /dev/null
+++ b/src/liblzma/subblock/subblock_encoder.h
@@ -0,0 +1,28 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file subblock_encoder.h
+/// \brief Encoder of the Subblock filter
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SUBBLOCK_ENCODER_H
+#define LZMA_SUBBLOCK_ENCODER_H
+
+#include "common.h"
+
+extern lzma_ret lzma_subblock_encoder_init(lzma_next_coder *next,
+ lzma_allocator *allocator, const lzma_filter_info *filters);
+
+#endif
diff --git a/src/lzma/Makefile.am b/src/lzma/Makefile.am
new file mode 100644
index 0000000..5fbd335
--- /dev/null
+++ b/src/lzma/Makefile.am
@@ -0,0 +1,63 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This program is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+bin_PROGRAMS = lzma
+
+lzma_SOURCES = \
+ alloc.c \
+ alloc.h \
+ args.c \
+ args.h \
+ error.c \
+ error.h \
+ hardware.c \
+ hardware.h \
+ help.c \
+ help.h \
+ io.c \
+ io.h \
+ main.c \
+ options.c \
+ options.h \
+ private.h \
+ process.c \
+ process.h \
+ suffix.c \
+ suffix.h \
+ util.c \
+ util.h
+
+## It must be able to find sysdefs.h, lzma_adv.h, and possible
+## replacement headers.
+lzma_CPPFLAGS = \
+ -DLOCALEDIR=\"$(localedir)\" \
+ -I@top_srcdir@/src/common \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_builddir@/lib \
+ -I@top_srcdir@/lib
+
+lzma_CFLAGS = @PTHREAD_CFLAGS@
+
+## Always link the command line tool statically against liblzma. It is
+## faster on x86, because no need for PIC. We also have one dependency less,
+## which allows users to more freely copy the lzma binary to other boxes.
+lzma_LDFLAGS = -static
+lzma_LDADD = \
+ @top_builddir@/src/liblzma/liblzma.la \
+ @LTLIBINTL@ \
+ @PTHREAD_LIBS@
+
+if COND_GNULIB
+lzma_LDADD += @top_builddir@/lib/libgnu_nls.a
+endif
diff --git a/src/lzma/alloc.c b/src/lzma/alloc.c
new file mode 100644
index 0000000..d0fee68
--- /dev/null
+++ b/src/lzma/alloc.c
@@ -0,0 +1,106 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file alloc.c
+/// \brief Memory allocation functions
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+
+/// Called when memory allocation fails. Prints and error message and
+/// quits the application.
+static void lzma_attribute((noreturn))
+xerror(void)
+{
+ errmsg(V_ERROR, "%s", strerror(errno));
+ my_exit(ERROR);
+}
+
+
+extern void *
+xmalloc(size_t size)
+{
+ if (size < 1) {
+ errno = EINVAL;
+ xerror();
+ }
+
+ void *p = malloc(size);
+ if (p == NULL)
+ xerror();
+
+ return p;
+}
+
+
+/*
+extern void *
+xrealloc(void *ptr, size_t size)
+{
+ if (size < 1) {
+ errno = EINVAL;
+ xerror();
+ }
+
+ ptr = realloc(ptr, size);
+ if (ptr == NULL)
+ xerror();
+
+ return ptr;
+}
+*/
+
+
+extern char *
+xstrdup(const char *src)
+{
+ if (src == NULL) {
+ errno = EINVAL;
+ xerror();
+ }
+
+ const size_t size = strlen(src) + 1;
+ char *dest = malloc(size);
+ if (dest == NULL)
+ xerror();
+
+ memcpy(dest, src, size);
+
+ return dest;
+}
+
+
+extern void
+xstrcpy(char **dest, const char *src)
+{
+ size_t len = strlen(src) + 1;
+
+ *dest = realloc(*dest, len);
+ if (*dest == NULL)
+ xerror();
+
+ memcpy(*dest, src, len + 1);
+
+ return;
+}
+
+
+extern void *
+allocator(void *opaque lzma_attribute((unused)),
+ size_t nmemb lzma_attribute((unused)), size_t size)
+{
+ return xmalloc(size);
+}
diff --git a/src/lzma/alloc.h b/src/lzma/alloc.h
new file mode 100644
index 0000000..8031726
--- /dev/null
+++ b/src/lzma/alloc.h
@@ -0,0 +1,42 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file alloc.h
+/// \brief Memory allocation functions
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef ALLOC_H
+#define ALLOC_H
+
+#include "private.h"
+
+
+/// Safe malloc() that never returns NULL.
+extern void *xmalloc(size_t size);
+
+/// Safe realloc() that never returns NULL.
+extern void *xrealloc(void *ptr, size_t size);
+
+/// Safe strdup() that never returns NULL.
+extern char *xstrdup(const char *src);
+
+/// xrealloc()s *dest to the size needed by src, and copies src to *dest.
+extern void xstrcpy(char **dest, const char *src);
+
+/// Function for lzma_allocator.alloc. This uses xmalloc().
+extern void *allocator(void *opaque lzma_attribute((unused)),
+ size_t nmemb lzma_attribute((unused)), size_t size);
+
+#endif
diff --git a/src/lzma/args.c b/src/lzma/args.c
new file mode 100644
index 0000000..d6163ae
--- /dev/null
+++ b/src/lzma/args.c
@@ -0,0 +1,566 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file args.c
+/// \brief Argument parsing
+///
+/// \note Filter-specific options parsing is in options.c.
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+#include "getopt.h"
+#include <ctype.h>
+
+
+enum tool_mode opt_mode = MODE_COMPRESS;
+enum header_type opt_header = HEADER_AUTO;
+
+char *opt_suffix = NULL;
+
+char *opt_files_name = NULL;
+char opt_files_split = '\0';
+FILE *opt_files_file = NULL;
+
+bool opt_stdout = false;
+bool opt_force = false;
+bool opt_keep_original = false;
+bool opt_preserve_name = false;
+
+lzma_check_type opt_check = LZMA_CHECK_CRC64;
+lzma_options_filter opt_filters[8];
+
+// We don't modify or free() this, but we need to assign it in some
+// non-const pointers.
+const char *stdin_filename = "(stdin)";
+
+static size_t preset_number = 7 - 1;
+static bool preset_default = true;
+static size_t filter_count = 0;
+
+
+enum {
+ OPT_COPY = INT_MIN,
+ OPT_SUBBLOCK,
+ OPT_X86,
+ OPT_POWERPC,
+ OPT_IA64,
+ OPT_ARM,
+ OPT_ARMTHUMB,
+ OPT_SPARC,
+ OPT_DELTA,
+ OPT_LZMA,
+
+ OPT_FILES,
+ OPT_FILES0,
+};
+
+
+static const char short_opts[] = "cC:dfFhlLkqrStT:vVz123456789";
+
+
+static const struct option long_opts[] = {
+ // gzip-like options
+ { "fast", no_argument, NULL, '1' },
+ { "best", no_argument, NULL, '9' },
+ { "memory", required_argument, NULL, 'M' },
+ { "name", no_argument, NULL, 'N' },
+ { "suffix", required_argument, NULL, 'S' },
+ { "threads", required_argument, NULL, 'T' },
+ { "version", no_argument, NULL, 'V' },
+ { "stdout", no_argument, NULL, 'c' },
+ { "to-stdout", no_argument, NULL, 'c' },
+ { "decompress", no_argument, NULL, 'd' },
+ { "uncompress", no_argument, NULL, 'd' },
+ { "force", no_argument, NULL, 'f' },
+ { "help", no_argument, NULL, 'h' },
+ { "list", no_argument, NULL, 'l' },
+ { "info", no_argument, NULL, 'l' },
+ { "keep", no_argument, NULL, 'k' },
+ { "no-name", no_argument, NULL, 'n' },
+ { "quiet", no_argument, NULL, 'q' },
+// { "recursive", no_argument, NULL, 'r' }, // TODO
+ { "test", no_argument, NULL, 't' },
+ { "verbose", no_argument, NULL, 'v' },
+ { "compress", no_argument, NULL, 'z' },
+
+ // Filters
+ { "copy", no_argument, NULL, OPT_COPY },
+ { "subblock", optional_argument, NULL, OPT_SUBBLOCK },
+ { "x86", no_argument, NULL, OPT_X86 },
+ { "bcj", no_argument, NULL, OPT_X86 },
+ { "powerpc", no_argument, NULL, OPT_POWERPC },
+ { "ppc", no_argument, NULL, OPT_POWERPC },
+ { "ia64", no_argument, NULL, OPT_IA64 },
+ { "itanium", no_argument, NULL, OPT_IA64 },
+ { "arm", no_argument, NULL, OPT_ARM },
+ { "armthumb", no_argument, NULL, OPT_ARMTHUMB },
+ { "sparc", no_argument, NULL, OPT_SPARC },
+ { "delta", optional_argument, NULL, OPT_DELTA },
+ { "lzma", optional_argument, NULL, OPT_LZMA },
+
+ // Other
+ { "format", required_argument, NULL, 'F' },
+ { "check", required_argument, NULL, 'C' },
+ { "files", optional_argument, NULL, OPT_FILES },
+ { "files0", optional_argument, NULL, OPT_FILES0 },
+
+ { NULL, 0, NULL, 0 }
+};
+
+
+static void
+add_filter(lzma_vli id, const char *opt_str)
+{
+ if (filter_count == 7) {
+ errmsg(V_ERROR, _("Maximum number of filters is seven"));
+ my_exit(ERROR);
+ }
+
+ opt_filters[filter_count].id = id;
+
+ switch (id) {
+ case LZMA_FILTER_SUBBLOCK:
+ opt_filters[filter_count].options
+ = parse_options_subblock(opt_str);
+ break;
+
+ case LZMA_FILTER_DELTA:
+ opt_filters[filter_count].options
+ = parse_options_delta(opt_str);
+ break;
+
+ case LZMA_FILTER_LZMA:
+ opt_filters[filter_count].options
+ = parse_options_lzma(opt_str);
+ break;
+
+ default:
+ assert(opt_str == NULL);
+ opt_filters[filter_count].options = NULL;
+ break;
+ }
+
+ ++filter_count;
+ preset_default = false;
+ return;
+}
+
+
+static void
+parse_real(int argc, char **argv)
+{
+ int c;
+
+ while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL))
+ != -1) {
+ switch (c) {
+ // gzip-like options
+
+ case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ preset_number = c - '1';
+ preset_default = false;
+ break;
+
+ // --memory
+ case 'M':
+ opt_memory = str_to_uint64("memory", optarg,
+ 1, SIZE_MAX);
+ break;
+
+ case 'N':
+ opt_preserve_name = true;
+ break;
+
+ // --suffix
+ case 'S':
+ // Empty suffix and suffixes having a slash are
+ // rejected. Such suffixes would break things later.
+ if (optarg[0] == '\0' || strchr(optarg, '/') != NULL) {
+ errmsg(V_ERROR, _("%s: Invalid filename "
+ "suffix"), optarg);
+ my_exit(ERROR);
+ }
+
+ free(opt_suffix);
+ opt_suffix = xstrdup(optarg);
+ break;
+
+ case 'T':
+ opt_threads = str_to_uint64("threads", optarg,
+ 1, SIZE_MAX);
+ break;
+
+ // --version
+ case 'V':
+ // This doesn't return.
+ show_version();
+
+ // --stdout
+ case 'c':
+ opt_stdout = true;
+ break;
+
+ // --decompress
+ case 'd':
+ opt_mode = MODE_DECOMPRESS;
+ break;
+
+ // --force
+ case 'f':
+ opt_force = true;
+ break;
+
+ // --help
+ case 'h':
+ // This doesn't return.
+ show_help();
+
+ // --list
+ case 'l':
+ opt_mode = MODE_LIST;
+ break;
+
+ // --keep
+ case 'k':
+ opt_keep_original = true;
+ break;
+
+ case 'n':
+ opt_preserve_name = false;
+ break;
+
+ // --quiet
+ case 'q':
+ if (verbosity > V_SILENT)
+ --verbosity;
+
+ break;
+
+ case 't':
+ opt_mode = MODE_TEST;
+ break;
+
+ // --verbose
+ case 'v':
+ if (verbosity < V_DEBUG)
+ ++verbosity;
+
+ break;
+
+ case 'z':
+ opt_mode = MODE_COMPRESS;
+ break;
+
+ // Filter setup
+
+ case OPT_COPY:
+ add_filter(LZMA_FILTER_COPY, NULL);
+ break;
+
+ case OPT_SUBBLOCK:
+ add_filter(LZMA_FILTER_SUBBLOCK, optarg);
+ break;
+
+ case OPT_X86:
+ add_filter(LZMA_FILTER_X86, NULL);
+ break;
+
+ case OPT_POWERPC:
+ add_filter(LZMA_FILTER_POWERPC, NULL);
+ break;
+
+ case OPT_IA64:
+ add_filter(LZMA_FILTER_IA64, NULL);
+ break;
+
+ case OPT_ARM:
+ add_filter(LZMA_FILTER_ARM, NULL);
+ break;
+
+ case OPT_ARMTHUMB:
+ add_filter(LZMA_FILTER_ARMTHUMB, NULL);
+ break;
+
+ case OPT_SPARC:
+ add_filter(LZMA_FILTER_SPARC, NULL);
+ break;
+
+ case OPT_DELTA:
+ add_filter(LZMA_FILTER_DELTA, optarg);
+ break;
+
+ case OPT_LZMA:
+ add_filter(LZMA_FILTER_LZMA, optarg);
+ break;
+
+ // Other
+
+ // --format
+ case 'F': {
+ static const char *types[] = {
+ "auto",
+ "native",
+ "single",
+ "multi",
+ "alone",
+// "gzip",
+ NULL
+ };
+
+ opt_header = 0;
+ while (strcmp(types[opt_header], optarg) != 0) {
+ if (types[++opt_header] == NULL) {
+ errmsg(V_ERROR, _("%s: Unknown file "
+ "format type"),
+ optarg);
+ my_exit(ERROR);
+ }
+ }
+
+ break;
+ }
+
+ // --check
+ case 'C': {
+ static const struct {
+ const char *str;
+ unsigned int value;
+ } types[] = {
+ { "none", LZMA_CHECK_NONE },
+ { "crc32", LZMA_CHECK_CRC32 },
+ { "crc64", LZMA_CHECK_CRC64 },
+ { "sha256", LZMA_CHECK_SHA256 },
+ { NULL, 0 }
+ };
+
+ size_t i = 0;
+ while (strcmp(types[i].str, optarg) != 0) {
+ if (types[++i].str == NULL) {
+ errmsg(V_ERROR, _("%s: Unknown "
+ "integrity check "
+ "type"), optarg);
+ my_exit(ERROR);
+ }
+ }
+
+ opt_check = types[i].value;
+ break;
+ }
+
+ case OPT_FILES:
+ opt_files_split = '\n';
+
+ // Fall through
+
+ case OPT_FILES0:
+ if (opt_files_name != NULL) {
+ errmsg(V_ERROR, _("Only one file can be "
+ "specified with `--files'"
+ "or `--files0'."));
+ my_exit(ERROR);
+ }
+
+ if (optarg == NULL) {
+ opt_files_name = (char *)stdin_filename;
+ opt_files_file = stdin;
+ } else {
+ opt_files_name = optarg;
+ opt_files_file = fopen(optarg,
+ c == OPT_FILES ? "r" : "rb");
+ if (opt_files_file == NULL) {
+ errmsg(V_ERROR, "%s: %s", optarg,
+ strerror(errno));
+ my_exit(ERROR);
+ }
+ }
+
+ break;
+
+ default:
+ show_try_help();
+ my_exit(ERROR);
+ }
+ }
+
+ return;
+}
+
+
+static void
+parse_environment(void)
+{
+ char *env = getenv("LZMA_OPT");
+ if (env == NULL)
+ return;
+
+ env = xstrdup(env);
+
+ // Calculate the number of arguments in env.
+ unsigned int argc = 1;
+ bool prev_was_space = true;
+ for (size_t i = 0; env[i] != '\0'; ++i) {
+ if (isspace(env[i])) {
+ prev_was_space = true;
+ } else if (prev_was_space) {
+ prev_was_space = false;
+ if (++argc > (unsigned int)(INT_MAX)) {
+ errmsg(V_ERROR, _("The environment variable "
+ "LZMA_OPT contains too many "
+ "arguments"));
+ my_exit(ERROR);
+ }
+ }
+ }
+
+ char **argv = xmalloc((argc + 1) * sizeof(char*));
+ argv[0] = argv0;
+ argv[argc] = NULL;
+
+ argc = 1;
+ prev_was_space = true;
+ for (size_t i = 0; env[i] != '\0'; ++i) {
+ if (isspace(env[i])) {
+ prev_was_space = true;
+ } else if (prev_was_space) {
+ prev_was_space = false;
+ argv[argc++] = env + i;
+ }
+ }
+
+ parse_real((int)(argc), argv);
+
+ free(env);
+
+ return;
+}
+
+
+static void
+set_compression_settings(void)
+{
+ if (filter_count == 0) {
+ opt_filters[0].id = LZMA_FILTER_LZMA;
+ opt_filters[0].options = (lzma_options_lzma *)(
+ lzma_preset_lzma + preset_number);
+ filter_count = 1;
+ }
+
+ // Terminate the filter options array.
+ opt_filters[filter_count].id = LZMA_VLI_VALUE_UNKNOWN;
+
+ // Optimize the filter chain a little by removing all
+ // Copy filters.
+ for (size_t i = 0; opt_filters[i].id != LZMA_VLI_VALUE_UNKNOWN; ++i) {
+ while (opt_filters[i].id == LZMA_FILTER_COPY) {
+ size_t j = i;
+ do {
+ opt_filters[j] = opt_filters[j + 1];
+ } while (opt_filters[++j].id
+ != LZMA_VLI_VALUE_UNKNOWN);
+ }
+ }
+
+ const uint32_t memory_limit = opt_memory / (1024 * 1024) + 1;
+ uint32_t memory_usage = lzma_memory_usage(opt_filters, true);
+
+ // Don't go over the memory limits when the default
+ // setting is used.
+ if (preset_default) {
+ while (memory_usage > memory_limit) {
+ if (preset_number == 0) {
+ errmsg(V_ERROR, _("Memory usage limit is too "
+ "small for any internal "
+ "filter preset"));
+ my_exit(ERROR);
+ }
+
+ --preset_number;
+ opt_filters[0].options = (lzma_options_lzma *)(
+ lzma_preset_lzma
+ + preset_number);
+ memory_usage = lzma_memory_usage(opt_filters,
+ true);
+ }
+ } else {
+ if (memory_usage > memory_limit) {
+ errmsg(V_ERROR, _("Memory usage limit is too small "
+ "for the given filter setup"));
+ my_exit(ERROR);
+ }
+ }
+
+ // Limit the number of worked threads so that memory usage
+ // limit isn't exceeded.
+ // FIXME: Probably should use bytes instead of mebibytes for
+ // memory_usage and memory_limit.
+ if (memory_usage == 0)
+ memory_usage = 1;
+
+ size_t thread_limit = memory_limit / memory_usage;
+ if (thread_limit == 0)
+ thread_limit = 1;
+
+ if (opt_threads > thread_limit)
+ opt_threads = thread_limit;
+
+ return;
+}
+
+
+extern char **
+parse_args(int argc, char **argv)
+{
+ // Check how we were called.
+ {
+ const char *name = str_filename(argv[0]);
+ if (name != NULL) {
+ if (strstr(name, "cat") != NULL) {
+ opt_mode = MODE_DECOMPRESS;
+ opt_stdout = true;
+ } else if (strstr(name, "un") != NULL) {
+ opt_mode = MODE_DECOMPRESS;
+ }
+ }
+ }
+
+ // First the flags from environment
+ parse_environment();
+
+ // Then from the command line
+ optind = 1;
+ parse_real(argc, argv);
+
+ // Never remove the source file when the destination is not on disk.
+ // In test mode the data is written nowhere, but setting opt_stdout
+ // will make the rest of the code behave well.
+ if (opt_stdout || opt_mode == MODE_TEST) {
+ opt_keep_original = true;
+ opt_stdout = true;
+ }
+
+ if (opt_mode == MODE_COMPRESS)
+ set_compression_settings();
+
+ // If no filenames are given, use stdin.
+ if (argv[optind] == NULL && opt_files_name == NULL) {
+ // We don't modify or free() the "-" constant.
+ static char *argv_stdin[2] = { (char *)"-", NULL };
+ return argv_stdin;
+ }
+
+ return argv + optind;
+}
diff --git a/src/lzma/args.h b/src/lzma/args.h
new file mode 100644
index 0000000..4f19a01
--- /dev/null
+++ b/src/lzma/args.h
@@ -0,0 +1,64 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file args.h
+/// \brief Argument parsing
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef ARGS_H
+#define ARGS_H
+
+#include "private.h"
+
+
+enum tool_mode {
+ MODE_COMPRESS,
+ MODE_DECOMPRESS,
+ MODE_TEST,
+ MODE_LIST,
+};
+
+enum header_type {
+ HEADER_AUTO,
+ HEADER_NATIVE,
+ HEADER_SINGLE,
+ HEADER_MULTI,
+ HEADER_ALONE,
+ // HEADER_GZIP,
+};
+
+
+extern char *opt_suffix;
+
+extern char *opt_files_name;
+extern char opt_files_split;
+extern FILE *opt_files_file;
+
+extern bool opt_stdout;
+extern bool opt_force;
+extern bool opt_keep_original;
+extern bool opt_preserve_name;
+// extern bool opt_recursive;
+extern enum tool_mode opt_mode;
+extern enum header_type opt_header;
+
+extern lzma_check_type opt_check;
+extern lzma_options_filter opt_filters[8];
+
+extern const char *stdin_filename;
+
+extern char **parse_args(int argc, char **argv);
+
+#endif
diff --git a/src/lzma/error.c b/src/lzma/error.c
new file mode 100644
index 0000000..a83de27
--- /dev/null
+++ b/src/lzma/error.c
@@ -0,0 +1,156 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file error.c
+/// \brief Error message printing
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+#include <stdarg.h>
+
+
+exit_status_type exit_status = SUCCESS;
+verbosity_type verbosity = V_WARNING;
+char *argv0 = NULL;
+volatile sig_atomic_t user_abort = 0;
+
+
+extern const char *
+str_strm_error(lzma_ret code)
+{
+ switch (code) {
+ case LZMA_OK:
+ return _("Operation successful");
+
+ case LZMA_STREAM_END:
+ return _("Operation finished successfully");
+
+ case LZMA_PROG_ERROR:
+ return _("Internal error (bug)");
+
+ case LZMA_DATA_ERROR:
+ return _("Compressed data is corrupt");
+
+ case LZMA_MEM_ERROR:
+ return strerror(ENOMEM);
+
+ case LZMA_BUF_ERROR:
+ return _("Unexpected end of input");
+
+ case LZMA_HEADER_ERROR:
+ return _("Unsupported options");
+
+ case LZMA_UNSUPPORTED_CHECK:
+ return _("Unsupported integrity check type");
+
+ default:
+ return NULL;
+ }
+}
+
+
+extern void
+set_exit_status(exit_status_type new_status)
+{
+ static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+ pthread_mutex_lock(&mutex);
+
+ if (new_status != WARNING || exit_status == SUCCESS)
+ exit_status = new_status;
+
+ pthread_mutex_unlock(&mutex);
+ return;
+}
+
+
+extern void lzma_attribute((noreturn))
+my_exit(int status)
+{
+ // Close stdout. If something goes wrong, print an error message
+ // to stderr.
+ {
+ const int ferror_err = ferror(stdout);
+ const int fclose_err = fclose(stdout);
+ if (fclose_err) {
+ errmsg(V_ERROR, _("Writing to standard output "
+ "failed: %s"), strerror(errno));
+ status = ERROR;
+ } else if (ferror_err) {
+ // Some error has occurred but we have no clue about
+ // the reason since fclose() succeeded.
+ errmsg(V_ERROR, _("Writing to standard output "
+ "failed: %s"), "Unknown error");
+ status = ERROR;
+ }
+ }
+
+ // Close stderr. If something goes wrong, there's nothing where we
+ // could print an error message. Just set the exit status.
+ {
+ const int ferror_err = ferror(stderr);
+ const int fclose_err = fclose(stderr);
+ if (fclose_err || ferror_err)
+ status = ERROR;
+ }
+
+ exit(status);
+}
+
+
+extern void lzma_attribute((format(printf, 2, 3)))
+errmsg(verbosity_type v, const char *fmt, ...)
+{
+ va_list ap;
+
+ if (v <= verbosity) {
+ va_start(ap, fmt);
+
+ static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+ pthread_mutex_lock(&mutex);
+
+ fprintf(stderr, "%s: ", argv0);
+ vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
+
+ pthread_mutex_unlock(&mutex);
+
+ va_end(ap);
+ }
+
+ if (v == V_ERROR)
+ set_exit_status(ERROR);
+ else if (v == V_WARNING)
+ set_exit_status(WARNING);
+
+ return;
+}
+
+
+extern void
+out_of_memory(void)
+{
+ errmsg(V_ERROR, "%s", strerror(ENOMEM));
+ user_abort = 1;
+ return;
+}
+
+
+extern void
+internal_error(void)
+{
+ errmsg(V_ERROR, _("Internal error (bug)"));
+ user_abort = 1;
+ return;
+}
diff --git a/src/lzma/error.h b/src/lzma/error.h
new file mode 100644
index 0000000..34ec30e
--- /dev/null
+++ b/src/lzma/error.h
@@ -0,0 +1,67 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file error.c
+/// \brief Error message printing
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef ERROR_H
+#define ERROR_H
+
+#include "private.h"
+
+
+typedef enum {
+ SUCCESS = 0,
+ ERROR = 1,
+ WARNING = 2,
+} exit_status_type;
+
+
+typedef enum {
+ V_SILENT,
+ V_ERROR,
+ V_WARNING,
+ V_VERBOSE,
+ V_DEBUG,
+} verbosity_type;
+
+
+extern exit_status_type exit_status;
+
+extern verbosity_type verbosity;
+
+/// Like GNU's program_invocation_name but portable
+extern char *argv0;
+
+/// Once this is non-zero, all threads must shutdown and clean up incomplete
+/// output files from the disk.
+extern volatile sig_atomic_t user_abort;
+
+
+extern const char * str_strm_error(lzma_ret code);
+
+extern void errmsg(verbosity_type v, const char *fmt, ...)
+ lzma_attribute((format(printf, 2, 3)));
+
+extern void set_exit_status(exit_status_type new_status);
+
+extern void my_exit(int status) lzma_attribute((noreturn));
+
+extern void out_of_memory(void);
+
+extern void internal_error(void);
+
+#endif
diff --git a/src/lzma/hardware.c b/src/lzma/hardware.c
new file mode 100644
index 0000000..6cb3cdf
--- /dev/null
+++ b/src/lzma/hardware.c
@@ -0,0 +1,99 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file hardware.c
+/// \brief Detection of available hardware resources
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+#include "physmem.h"
+
+
+/// Maximum number of free *coder* threads. This can be set with
+/// the --threads=NUM command line option.
+size_t opt_threads = 1;
+
+
+/// Number of bytes of memory to use at maximum (only a rough limit).
+/// This can be set with the --memory=NUM command line option.
+/// If no better value can be determined, the default is 14 MiB, which
+/// should be quite safe even for older systems while still allowing
+/// reasonable compression ratio.
+size_t opt_memory = 14 * 1024 * 1024;
+
+
+/// Get the amount of physical memory, and set opt_memory to 1/3 of it.
+/// User can then override this with --memory command line option.
+static void
+hardware_memory(void)
+{
+ uint64_t mem = physmem();
+ if (mem != 0) {
+ mem /= 3;
+
+#if UINT64_MAX > SIZE_MAX
+ if (mem > SIZE_MAX)
+ mem = SIZE_MAX;
+#endif
+
+ opt_memory = mem;
+ }
+
+ return;
+}
+
+
+/// Get the number of CPU cores, and set opt_threads to default to that value.
+/// User can then override this with --threads command line option.
+static void
+hardware_cores(void)
+{
+#if defined(HAVE_NUM_PROCESSORS_SYSCONF)
+ const long cpus = sysconf(_SC_NPROCESSORS_ONLN);
+ if (cpus > 0)
+ opt_threads = (size_t)(cpus);
+
+#elif defined(HAVE_NUM_PROCESSORS_SYSCTL)
+ int name[2] = { CTL_HW, HW_NCPU };
+ int cpus;
+ size_t cpus_size = sizeof(cpus);
+ if (!sysctl(name, &cpus, &cpus_size, NULL, NULL)
+ && cpus_size == sizeof(cpus) && cpus > 0)
+ opt_threads = (size_t)(cpus);
+#endif
+
+ // Limit opt_threads so that maximum number of threads doesn't exceed.
+
+#if defined(_SC_THREAD_THREADS_MAX)
+ const long threads_max = sysconf(_SC_THREAD_THREADS_MAX);
+ if (threads_max > 0 && (size_t)(threads_max) < opt_threads)
+ opt_threads = (size_t)(threads_max);
+
+#elif defined(PTHREAD_THREADS_MAX)
+ if (opt_threads > PTHREAD_THREADS_MAX)
+ opt_threads = PTHREAD_THREADS_MAX;
+#endif
+
+ return;
+}
+
+
+extern void
+hardware_init(void)
+{
+ hardware_memory();
+ hardware_cores();
+ return;
+}
diff --git a/src/lzma/hardware.h b/src/lzma/hardware.h
new file mode 100644
index 0000000..d47bd29
--- /dev/null
+++ b/src/lzma/hardware.h
@@ -0,0 +1,31 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file hardware.c
+/// \brief Detection of available hardware resources
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef HARDWARE_H
+#define HARDWARE_H
+
+#include "private.h"
+
+
+extern size_t opt_threads;
+extern size_t opt_memory;
+
+extern void hardware_init(void);
+
+#endif
diff --git a/src/lzma/help.c b/src/lzma/help.c
new file mode 100644
index 0000000..ad7dd86
--- /dev/null
+++ b/src/lzma/help.c
@@ -0,0 +1,178 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file help.c
+/// \brief Help messages
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+
+extern void
+show_try_help(void)
+{
+ // Print this with V_WARNING instead of V_ERROR to prevent it from
+ // showing up when --quiet has been specified.
+ errmsg(V_WARNING, _("Try `%s --help' for more information."), argv0);
+ return;
+}
+
+
+extern void lzma_attribute((noreturn))
+show_help(void)
+{
+ printf(_("Usage: %s [OPTION]... [FILE]...\n"
+ "Compress or decompress FILEs in the .lzma format.\n"
+ "\n"), argv0);
+
+ puts(_("Mandatory arguments to long options are mandatory for "
+ "short options too.\n"));
+
+ puts(_(
+" Operation mode:\n"
+"\n"
+" -z, --compress force compression\n"
+" -d, --decompress force decompression\n"
+" -t, --test test compressed file integrity\n"
+" -l, --list list block sizes, total sizes, and possible metadata\n"
+));
+
+ puts(_(
+" Operation modifiers:\n"
+"\n"
+" -k, --keep keep (don't delete) input files\n"
+" -f, --force force overwrite of output file and (de)compress links\n"
+" -c, --stdout write to standard output and don't delete input files\n"
+" -S, --suffix=.SUF use suffix `.SUF' on compressed files instead of `.lzma'\n"
+" -F, --format=FMT file format to encode or decode; possible values are\n"
+" `auto', `native', `single', `multi', and `alone'\n"
+" --files=[FILE] read filenames to process from FILE; if FILE is\n"
+" omitted, filenames are read from the standard input;\n"
+" filenames must be terminated with the newline character\n"
+" --files0=[FILE] like --files but use the nul byte as terminator\n"
+));
+
+ puts(_(
+" Compression presets and basic compression options:\n"
+"\n"
+" -1 .. -2 fast compression\n"
+" -3 .. -6 good compression\n"
+" -7 .. -9 excellent compression, but needs a lot of memory;\n"
+" default is -7 if memory limit allows\n"
+"\n"
+" -C, --check=CHECK integrity check type: `crc32', `crc64' (default),\n"
+" or `sha256'\n"
+));
+
+ puts(_(
+" Custom filter chain for compression (alternative for using presets):\n"
+"\n"
+" --lzma=[OPTS] LZMA filter; OPTS is a comma-separated list of zero or\n"
+" more of the following options (valid values; default):\n"
+" dict=NUM dictionary size in bytes (1 - 1Gi; 8Mi)\n"
+" lc=NUM number of literal context bits (0-8; 3)\n"
+" lp=NUM number of literal position bits (0-4; 0)\n"
+" pb=NUM number of position bits (0-4; 2)\n"
+" mode=MODE compression mode (`fast' or `best'; `best')\n"
+" fb=NUM number of fast bytes (5-273; 128)\n"
+" mf=NAME match finder (hc3, hc4, bt2, bt3, bt4; bt4)\n"
+" mfc=NUM match finder cycles; 0=automatic (default)\n"
+"\n"
+" --x86 x86 filter (sometimes called BCJ filter)\n"
+" --powerpc PowerPC (big endian) filter\n"
+" --ia64 IA64 (Itanium) filter\n"
+" --arm ARM filter\n"
+" --armthumb ARM-Thumb filter\n"
+" --sparc SPARC filter\n"
+"\n"
+" --copy No filtering (useful only when specified alone)\n"
+" --subblock=[OPTS] Subblock filter; valid OPTS (valid values; default):\n"
+" size=NUM number of bytes of data per subblock\n"
+" (1 - 256Mi; 4Ki)\n"
+" rle=NUM run-length encoder chunk size (0-256; 0)\n"
+));
+
+/*
+These aren't implemented yet.
+
+ puts(_(
+" Metadata options:\n"
+"\n"
+" -N, --name save or restore the original filename and time stamp\n"
+" -n, --no-name do not save or restore filename and time stamp (default)\n"
+" -S, --sign=KEY sign the data with GnuPG when compressing, or verify\n"
+" the signature when decompressing\n"));
+*/
+
+ puts(_(
+" Resource usage options:\n"
+"\n"
+" -M, --memory=NUM use roughly NUM bytes of memory at maximum\n"
+" -T, --threads=NUM use at maximum of NUM (de)compression threads\n"
+// " --threading=STR threading style; possible values are `auto' (default),\n"
+// " `files', and `stream'
+));
+
+ puts(_(
+" Other options:\n"
+"\n"
+" -q, --quiet suppress warnings; specify twice to suppress errors too\n"
+" -v, --verbose be verbose; specify twice for even more verbose\n"
+"\n"
+" -h, --help display this help and exit\n"
+" -V, --version display version and license information and exit\n"));
+
+ puts(_("With no FILE, or when FILE is -, read standard input.\n"));
+
+ size_t mem_limit = opt_memory / (1024 * 1024);
+ if (mem_limit == 0)
+ mem_limit = 1;
+
+ puts(_("On this system and configuration, the tool will use"));
+ printf(_(" * roughly %zu MiB of memory at maximum; and\n"),
+ mem_limit);
+ printf(N_(
+ " * at maximum of one thread for (de)compression.\n\n",
+ " * at maximum of %zu threads for (de)compression.\n\n",
+ opt_threads), opt_threads);
+
+ printf(_("Report bugs to <%s> (in English or Finnish).\n"),
+ PACKAGE_BUGREPORT);
+
+ my_exit(SUCCESS);
+}
+
+
+extern void lzma_attribute((noreturn))
+show_version(void)
+{
+ printf(
+"lzma (LZMA Utils) " PACKAGE_VERSION "\n"
+"\n"
+"Copyright (C) 1999-2006 Igor Pavlov\n"
+"Copyright (C) 2007 Lasse Collin\n"
+"\n"
+"This program is free software; you can redistribute it and/or modify\n"
+"it under the terms of the GNU General Public License as published by\n"
+"the Free Software Foundation; either version 2 of the License, or\n"
+"(at your option) any later version.\n"
+"\n"
+"This program is distributed in the hope that it will be useful,\n"
+"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
+"GNU General Public License for more details.\n"
+"\n");
+ my_exit(SUCCESS);
+}
diff --git a/src/lzma/help.h b/src/lzma/help.h
new file mode 100644
index 0000000..659c66a
--- /dev/null
+++ b/src/lzma/help.h
@@ -0,0 +1,32 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file help.h
+/// \brief Help messages
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef HELP_H
+#define HELP_H
+
+#include "private.h"
+
+
+extern void show_try_help(void);
+
+extern void show_help(void) lzma_attribute((noreturn));
+
+extern void show_version(void) lzma_attribute((noreturn));
+
+#endif
diff --git a/src/lzma/io.c b/src/lzma/io.c
new file mode 100644
index 0000000..a7683fc
--- /dev/null
+++ b/src/lzma/io.c
@@ -0,0 +1,664 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file io.c
+/// \brief File opening, unlinking, and closing
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+#if defined(HAVE_FUTIMES) || defined(HAVE_FUTIMESAT)
+# include <sys/time.h>
+#endif
+
+#ifndef O_SEARCH
+# define O_SEARCH O_RDONLY
+#endif
+
+
+/// \brief Number of open file_pairs
+///
+/// Once the main() function has requested processing of all files,
+/// we wait that open_pairs drops back to zero. Then it is safe to
+/// exit from the program.
+static size_t open_pairs = 0;
+
+
+/// \brief mutex for file system operations
+///
+/// All file system operations are done via the functions in this file.
+/// They use fchdir() to avoid some race conditions (more portable than
+/// openat() & co.).
+///
+/// Synchronizing all file system operations shouldn't affect speed notably,
+/// since the actual reading from and writing to files is done in parallel.
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
+
+/// This condition is invoked when a file is closed and the value of
+/// the open_files variable has dropped to zero. The only listener for
+/// this condition is io_finish() which is called from main().
+static pthread_cond_t io_cond = PTHREAD_COND_INITIALIZER;
+
+
+/// True when stdout is being used by some thread
+static bool stdout_in_use = false;
+
+
+/// This condition is signalled when a thread releases stdout (no longer
+/// writes data to it).
+static pthread_cond_t stdout_cond = PTHREAD_COND_INITIALIZER;
+
+
+/// \brief Directory where we were started
+///
+/// This is needed when a new file, whose name was given on command line,
+/// is opened.
+static int start_dir;
+
+
+static uid_t uid;
+static gid_t gid;
+
+
+extern void
+io_init(void)
+{
+ start_dir = open(".", O_SEARCH | O_NOCTTY);
+ if (start_dir == -1) {
+ errmsg(V_ERROR, _("Cannot get file descriptor of the current "
+ "directory: %s"), strerror(errno));
+ my_exit(ERROR);
+ }
+
+ uid = getuid();
+ gid = getgid();
+
+ return;
+}
+
+
+/// Waits until the number of open file_pairs has dropped to zero.
+extern void
+io_finish(void)
+{
+ pthread_mutex_lock(&mutex);
+
+ while (open_pairs != 0)
+ pthread_cond_wait(&io_cond, &mutex);
+
+ (void)close(start_dir);
+
+ pthread_mutex_unlock(&mutex);
+
+ return;
+}
+
+
+/// \brief Unlinks a file
+///
+/// \param dir_fd File descriptor of the directory containing the file
+/// \param name Name of the file with or without path
+///
+/// \return Zero on success. On error, -1 is returned and errno set.
+///
+static void
+io_unlink(int dir_fd, const char *name, ino_t ino)
+{
+ const char *base = str_filename(name);
+ if (base == NULL) {
+ // This shouldn't happen.
+ errmsg(V_ERROR, _("%s: Invalid filename"), name);
+ return;
+ }
+
+ pthread_mutex_lock(&mutex);
+
+ if (fchdir(dir_fd)) {
+ errmsg(V_ERROR, _("Cannot change directory: %s"),
+ strerror(errno));
+ } else {
+ struct stat st;
+ if (lstat(base, &st) || st.st_ino != ino)
+ errmsg(V_ERROR, _("%s: File seems to be moved, "
+ "not removing"), name);
+
+ // There's a race condition between lstat() and unlink()
+ // but at least we have tried to avoid removing wrong file.
+ else if (unlink(base))
+ errmsg(V_ERROR, _("%s: Cannot remove: %s"),
+ name, strerror(errno));
+ }
+
+ pthread_mutex_unlock(&mutex);
+
+ return;
+}
+
+
+/// \brief Copies owner/group and permissions
+///
+/// \todo ACL and EA support
+///
+static void
+io_copy_attrs(const file_pair *pair)
+{
+ // This function is more tricky than you may think at first.
+ // Blindly copying permissions may permit users to access the
+ // destination file who didn't have permission to access the
+ // source file.
+
+ if (uid == 0 && fchown(pair->dest_fd, pair->src_st.st_uid, -1))
+ errmsg(V_WARNING, _("%s: Cannot set the file owner: %s"),
+ pair->dest_name, strerror(errno));
+
+ mode_t mode;
+
+ if (fchown(pair->dest_fd, -1, pair->src_st.st_gid)) {
+ errmsg(V_WARNING, _("%s: Cannot set the file group: %s"),
+ pair->dest_name, strerror(errno));
+ // We can still safely copy some additional permissions:
+ // `group' must be at least as strict as `other' and
+ // also vice versa.
+ //
+ // NOTE: After this, the owner of the source file may
+ // get additional permissions. This shouldn't be too bad,
+ // because the owner would have had permission to chmod
+ // the original file anyway.
+ mode = ((pair->src_st.st_mode & 0070) >> 3)
+ & (pair->src_st.st_mode & 0007);
+ mode = (pair->src_st.st_mode & 0700) | (mode << 3) | mode;
+ } else {
+ // Drop the setuid, setgid, and sticky bits.
+ mode = pair->src_st.st_mode & 0777;
+ }
+
+ if (fchmod(pair->dest_fd, mode))
+ errmsg(V_WARNING, _("%s: Cannot set the file permissions: %s"),
+ pair->dest_name, strerror(errno));
+
+ // Copy the timestamps only if we have a secure function to do it.
+#if defined(HAVE_FUTIMES) || defined(HAVE_FUTIMESAT)
+ struct timeval tv[2];
+ tv[0].tv_sec = pair->src_st.st_atime;
+ tv[1].tv_sec = pair->src_st.st_mtime;
+
+# if defined(HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC)
+ tv[0].tv_usec = pair->src_st.st_atim.tv_nsec / 1000;
+# elif defined(HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC)
+ tv[0].tv_usec = pair->src_st.st_atimespec.tv_nsec / 1000;
+# else
+ tv[0].tv_usec = 0;
+# endif
+
+# if defined(HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
+ tv[1].tv_usec = pair->src_st.st_mtim.tv_nsec / 1000;
+# elif defined(HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC)
+ tv[1].tv_usec = pair->src_st.st_mtimespec.tv_nsec / 1000;
+# else
+ tv[1].tv_usec = 0;
+# endif
+
+# ifdef HAVE_FUTIMES
+ (void)futimes(pair->dest_fd, tv);
+# else
+ (void)futimesat(pair->dest_fd, NULL, tv);
+# endif
+#endif
+
+ return;
+}
+
+
+/// Opens and changes into the directory containing the source file.
+static int
+io_open_dir(file_pair *pair)
+{
+ if (pair->src_name == stdin_filename)
+ return 0;
+
+ if (fchdir(start_dir)) {
+ errmsg(V_ERROR, _("Cannot change directory: %s"),
+ strerror(errno));
+ return -1;
+ }
+
+ const char *split = strrchr(pair->src_name, '/');
+ if (split == NULL) {
+ pair->dir_fd = start_dir;
+ } else {
+ // Copy also the slash. It's needed to support filenames
+ // like "/foo" (dirname being "/"), and it never hurts anyway.
+ const size_t dirname_len = split - pair->src_name + 1;
+ char dirname[dirname_len + 1];
+ memcpy(dirname, pair->src_name, dirname_len);
+ dirname[dirname_len] = '\0';
+
+ // Open the directory and change into it.
+ pair->dir_fd = open(dirname, O_SEARCH | O_NOCTTY);
+ if (pair->dir_fd == -1 || fchdir(pair->dir_fd)) {
+ errmsg(V_ERROR, _("%s: Cannot open the directory "
+ "containing the file: %s"),
+ pair->src_name, strerror(errno));
+ (void)close(pair->dir_fd);
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+static void
+io_close_dir(file_pair *pair)
+{
+ if (pair->dir_fd != start_dir)
+ (void)close(pair->dir_fd);
+
+ return;
+}
+
+
+/// Opens the source file. The file is opened using the plain filename without
+/// path, thus the file must be in the current working directory. This is
+/// ensured because io_open_dir() is always called before this function.
+static int
+io_open_src(file_pair *pair)
+{
+ if (pair->src_name == stdin_filename) {
+ pair->src_fd = STDIN_FILENO;
+ } else {
+ // Strip the pathname. Thanks to io_open_dir(), the file
+ // is now in the current working directory.
+ const char *filename = str_filename(pair->src_name);
+ if (filename == NULL)
+ return -1;
+
+ // Symlinks are followed if --stdout or --force has been
+ // specified.
+ const bool follow_symlinks = opt_stdout || opt_force;
+ pair->src_fd = open(filename, O_RDONLY | O_NOCTTY
+ | (follow_symlinks ? 0 : O_NOFOLLOW));
+ if (pair->src_fd == -1) {
+ // Give an understandable error message in if reason
+ // for failing was that the file was a symbolic link.
+ // - Linux, OpenBSD, Solaris: ELOOP
+ // - FreeBSD: EMLINK
+ // - Tru64: ENOTSUP
+ // It seems to be safe to check for all these, since
+ // those errno values aren't used for other purporses
+ // on any of the listed operating system *when* the
+ // above flags are used with open().
+ if (!follow_symlinks
+ && (errno == ELOOP
+#ifdef EMLINK
+ || errno == EMLINK
+#endif
+#ifdef ENOTSUP
+ || errno == ENOTSUP
+#endif
+ )) {
+ errmsg(V_WARNING, _("%s: Is a symbolic link, "
+ "skipping"), pair->src_name);
+ } else {
+ errmsg(V_ERROR, "%s: %s", pair->src_name,
+ strerror(errno));
+ }
+
+ return -1;
+ }
+
+ if (fstat(pair->src_fd, &pair->src_st)) {
+ errmsg(V_ERROR, "%s: %s", pair->src_name,
+ strerror(errno));
+ goto error;
+ }
+
+ if (S_ISDIR(pair->src_st.st_mode)) {
+ errmsg(V_WARNING, _("%s: Is a directory, skipping"),
+ pair->src_name);
+ goto error;
+ }
+
+ if (!opt_stdout) {
+ if (!opt_force && !S_ISREG(pair->src_st.st_mode)) {
+ errmsg(V_WARNING, _("%s: Not a regular file, "
+ "skipping"), pair->src_name);
+ goto error;
+ }
+
+ if (pair->src_st.st_mode & (S_ISUID | S_ISGID)) {
+ // Setuid and setgid files are rejected even
+ // with --force. This is good for security
+ // (hopefully) but it's a bit weird to reject
+ // file when --force was given. At least this
+ // matches gzip's behavior.
+ errmsg(V_WARNING, _("%s: File has setuid or "
+ "setgid bit set, skipping"),
+ pair->src_name);
+ goto error;
+ }
+
+ if (!opt_force && (pair->src_st.st_mode & S_ISVTX)) {
+ errmsg(V_WARNING, _("%s: File has sticky bit "
+ "set, skipping"),
+ pair->src_name);
+ goto error;
+ }
+
+ if (pair->src_st.st_nlink > 1) {
+ errmsg(V_WARNING, _("%s: Input file has more "
+ "than one hard link, "
+ "skipping"), pair->src_name);
+ goto error;
+ }
+ }
+ }
+
+ return 0;
+
+error:
+ (void)close(pair->src_fd);
+ return -1;
+}
+
+
+/// \brief Closes source file of the file_pair structure
+///
+/// \param pair File whose src_fd should be closed
+/// \param success If true, the file will be removed from the disk if
+/// closing succeeds and --keep hasn't been used.
+static void
+io_close_src(file_pair *pair, bool success)
+{
+ if (pair->src_fd == STDIN_FILENO || pair->src_fd == -1)
+ return;
+
+ if (close(pair->src_fd)) {
+ errmsg(V_ERROR, _("%s: Closing the file failed: %s"),
+ pair->src_name, strerror(errno));
+ } else if (success && !opt_keep_original) {
+ io_unlink(pair->dir_fd, pair->src_name, pair->src_st.st_ino);
+ }
+
+ return;
+}
+
+
+static int
+io_open_dest(file_pair *pair)
+{
+ if (opt_stdout || pair->src_fd == STDIN_FILENO) {
+ // We don't modify or free() this.
+ pair->dest_name = (char *)"(stdout)";
+ pair->dest_fd = STDOUT_FILENO;
+
+ // Synchronize the order in which files get written to stdout.
+ // Unlocking the mutex is safe, because opening the file_pair
+ // can no longer fail.
+ while (stdout_in_use)
+ pthread_cond_wait(&stdout_cond, &mutex);
+
+ stdout_in_use = true;
+
+ } else {
+ pair->dest_name = get_dest_name(pair->src_name);
+ if (pair->dest_name == NULL)
+ return -1;
+
+ // This cannot fail, because get_dest_name() doesn't return
+ // invalid names.
+ const char *filename = str_filename(pair->dest_name);
+ assert(filename != NULL);
+
+ pair->dest_fd = open(filename, O_WRONLY | O_NOCTTY | O_CREAT
+ | (opt_force ? O_TRUNC : O_EXCL),
+ S_IRUSR | S_IWUSR);
+ if (pair->dest_fd == -1) {
+ errmsg(V_ERROR, "%s: %s", pair->dest_name,
+ strerror(errno));
+ free(pair->dest_name);
+ return -1;
+ }
+
+ // If this really fails... well, we have a safe fallback.
+ struct stat st;
+ if (fstat(pair->dest_fd, &st))
+ pair->dest_ino = 0;
+ else
+ pair->dest_ino = st.st_ino;
+ }
+
+ return 0;
+}
+
+
+/// \brief Closes destination file of the file_pair structure
+///
+/// \param pair File whose dest_fd should be closed
+/// \param success If false, the file will be removed from the disk.
+///
+/// \return Zero if closing succeeds. On error, -1 is returned and
+/// error message printed.
+static int
+io_close_dest(file_pair *pair, bool success)
+{
+ if (pair->dest_fd == -1)
+ return 0;
+
+ if (pair->dest_fd == STDOUT_FILENO) {
+ stdout_in_use = false;
+ pthread_cond_signal(&stdout_cond);
+ return 0;
+ }
+
+ if (close(pair->dest_fd)) {
+ errmsg(V_ERROR, _("%s: Closing the file failed: %s"),
+ pair->dest_name, strerror(errno));
+
+ // Closing destination file failed, so we cannot trust its
+ // contents. Get rid of junk:
+ io_unlink(pair->dir_fd, pair->dest_name, pair->dest_ino);
+ free(pair->dest_name);
+ return -1;
+ }
+
+ // If the operation using this file wasn't successful, we git rid
+ // of the junk file.
+ if (!success)
+ io_unlink(pair->dir_fd, pair->dest_name, pair->dest_ino);
+
+ free(pair->dest_name);
+
+ return 0;
+}
+
+
+extern file_pair *
+io_open(const char *src_name)
+{
+ if (is_empty_filename(src_name))
+ return NULL;
+
+ file_pair *pair = malloc(sizeof(file_pair));
+ if (pair == NULL) {
+ out_of_memory();
+ return NULL;
+ }
+
+ *pair = (file_pair){
+ .src_name = src_name,
+ .dest_name = NULL,
+ .dir_fd = -1,
+ .src_fd = -1,
+ .dest_fd = -1,
+ .src_eof = false,
+ };
+
+ pthread_mutex_lock(&mutex);
+
+ ++open_pairs;
+
+ if (io_open_dir(pair))
+ goto error_dir;
+
+ if (io_open_src(pair))
+ goto error_src;
+
+ if (user_abort || io_open_dest(pair))
+ goto error_dest;
+
+ pthread_mutex_unlock(&mutex);
+
+ return pair;
+
+error_dest:
+ io_close_src(pair, false);
+error_src:
+ io_close_dir(pair);
+error_dir:
+ --open_pairs;
+ pthread_mutex_unlock(&mutex);
+ free(pair);
+ return NULL;
+}
+
+
+/// \brief Closes the file descriptors and frees the structure
+extern void
+io_close(file_pair *pair, bool success)
+{
+ if (success && pair->dest_fd != STDOUT_FILENO)
+ io_copy_attrs(pair);
+
+ // Close the destination first. If it fails, we must not remove
+ // the source file!
+ if (!io_close_dest(pair, success)) {
+ // Closing destination file succeeded. Remove the source file
+ // if the operation using this file pair was successful
+ // and we haven't been requested to keep the source file.
+ io_close_src(pair, success);
+ } else {
+ // We don't care if operation using this file pair was
+ // successful or not, since closing the destination file
+ // failed. Don't remove the original file.
+ io_close_src(pair, false);
+ }
+
+ io_close_dir(pair);
+
+ free(pair);
+
+ pthread_mutex_lock(&mutex);
+
+ if (--open_pairs == 0)
+ pthread_cond_signal(&io_cond);
+
+ pthread_mutex_unlock(&mutex);
+
+ return;
+}
+
+
+/// \brief Reads from a file to a buffer
+///
+/// \param pair File pair having the sourcefile open for reading
+/// \param buf Destination buffer to hold the read data
+/// \param size Size of the buffer; assumed be smaller than SSIZE_MAX
+///
+/// \return On success, number of bytes read is returned. On end of
+/// file zero is returned and pair->src_eof set to true.
+/// On error, SIZE_MAX is returned and error message printed.
+///
+/// \note This does no locking, thus two threads must not read from
+/// the same file. This no problem in this program.
+extern size_t
+io_read(file_pair *pair, uint8_t *buf, size_t size)
+{
+ // We use small buffers here.
+ assert(size < SSIZE_MAX);
+
+ size_t left = size;
+
+ while (left > 0) {
+ const ssize_t amount = read(pair->src_fd, buf, left);
+
+ if (amount == 0) {
+ pair->src_eof = true;
+ break;
+ }
+
+ if (amount == -1) {
+ if (errno == EINTR) {
+ if (user_abort)
+ return SIZE_MAX;
+
+ continue;
+ }
+
+ errmsg(V_ERROR, _("%s: Read error: %s"),
+ pair->src_name, strerror(errno));
+
+ // FIXME Is this needed?
+ pair->src_eof = true;
+
+ return SIZE_MAX;
+ }
+
+ buf += (size_t)(amount);
+ left -= (size_t)(amount);
+ }
+
+ return size - left;
+}
+
+
+/// \brief Writes a buffer to a file
+///
+/// \param pair File pair having the destination file open for writing
+/// \param buf Buffer containing the data to be written
+/// \param size Size of the buffer; assumed be smaller than SSIZE_MAX
+///
+/// \return On success, zero is returned. On error, -1 is returned
+/// and error message printed.
+///
+/// \note This does no locking, thus two threads must not write to
+/// the same file. This no problem in this program.
+extern int
+io_write(const file_pair *pair, const uint8_t *buf, size_t size)
+{
+ assert(size < SSIZE_MAX);
+
+ while (size > 0) {
+ const ssize_t amount = write(pair->dest_fd, buf, size);
+ if (amount == -1) {
+ if (errno == EINTR) {
+ if (user_abort)
+ return -1;
+
+ continue;
+ }
+
+ errmsg(V_ERROR, _("%s: Write error: %s"),
+ pair->dest_name, strerror(errno));
+ return -1;
+ }
+
+ buf += (size_t)(amount);
+ size -= (size_t)(amount);
+ }
+
+ return 0;
+}
diff --git a/src/lzma/io.h b/src/lzma/io.h
new file mode 100644
index 0000000..d1aa17f
--- /dev/null
+++ b/src/lzma/io.h
@@ -0,0 +1,60 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file io.h
+/// \brief I/O types and functions
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef IO_H
+#define IO_H
+
+#include "private.h"
+
+#if BUFSIZ <= 1024
+# define IO_BUFFER_SIZE 8192
+#else
+# define IO_BUFFER_SIZE BUFSIZ
+#endif
+
+
+typedef struct {
+ const char *src_name;
+ char *dest_name;
+
+ int dir_fd;
+ int src_fd;
+ int dest_fd;
+
+ struct stat src_st;
+ ino_t dest_ino;
+
+ bool src_eof;
+} file_pair;
+
+
+extern void io_init(void);
+
+extern void io_finish(void);
+
+extern file_pair *io_open(const char *src_name);
+
+extern void io_close(file_pair *pair, bool success);
+
+extern size_t io_read(file_pair *pair, uint8_t *buf, size_t size);
+
+extern int io_write(const file_pair *pair, const uint8_t *buf, size_t size);
+
+
+#endif
diff --git a/src/lzma/list.c b/src/lzma/list.c
new file mode 100644
index 0000000..61eb570
--- /dev/null
+++ b/src/lzma/list.c
@@ -0,0 +1,477 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file list.c
+/// \brief Listing information about .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+
+/*
+
+1. Check the file type: native, alone, unknown
+
+Alone:
+1. Show info about header. Don't look for concatenated parts.
+
+Native:
+1. Check that Stream Header is valid.
+2. Seek to the end of the file.
+3. Skip padding.
+4. Reverse decode Stream Footer.
+5. Seek Backward Size bytes.
+6.
+
+*/
+
+
+static void
+unsupported_file(file_handle *handle)
+{
+ errmsg(V_ERROR, "%s: Unsupported file type", handle->name);
+ set_exit_status(ERROR);
+ (void)io_close(handle);
+ return;
+}
+
+
+/// Primitive escaping function, that escapes only ASCII control characters.
+static void
+print_escaped(const uint8_t *str)
+{
+ while (*str != '\0') {
+ if (*str <= 0x1F || *str == 0x7F)
+ printf("\\x%02X", *str);
+ else
+ putchar(*str);
+
+ ++str;
+ }
+
+ return;
+}
+
+
+static void
+list_native(file_handle *handle)
+{
+ lzma_stream strm = LZMA_STREAM_INIT;
+ lzma_stream_flags flags;
+ lzma_ret ret = lzma_stream_header_decoder(&strm, &flags);
+
+}
+
+
+static void
+list_alone(const listing_handle *handle)
+{
+ if (handle->buffer[0] > (4 * 5 + 4) * 9 + 8) {
+ unsupported_file(handle);
+ return;
+ }
+
+ const unsigned int pb = handle->buffer[0] / (9 * 5);
+ handle->buffer[0] -= pb * 9 * 5;
+ const unsigned int lp = handle->buffer[0] / 9;
+ const unsigned int lc = handle->buffer[0] - lp * 9;
+
+ uint32_t dict = 0;
+ for (size_t i = 1; i < 5; ++i) {
+ dict <<= 8;
+ dict |= header[i];
+ }
+
+ if (dict > LZMA_DICTIONARY_SIZE_MAX) {
+ unsupported_file(handle);
+ return;
+ }
+
+ uint64_t uncompressed_size = 0;
+ for (size_t i = 5; i < 13; ++i) {
+ uncompressed_size <<= 8;
+ uncompressed_size |= header[i];
+ }
+
+ // Reject files with uncompressed size of 256 GiB or more. It's
+ // an arbitrary limit trying to avoid at least some false positives.
+ if (uncompressed_size != UINT64_MAX
+ && uncompressed_size >= (UINT64_C(1) << 38)) {
+ unsupported_file(handle);
+ return;
+ }
+
+ if (verbosity < V_WARNING) {
+ printf("name=");
+ print_escaped(handle->name);
+ printf("\nformat=alone\n");
+
+ if (uncompressed_size == UINT64_MAX)
+ printf("uncompressed_size=unknown\n");
+ else
+ printf("uncompressed_size=%" PRIu64 "\n",
+ uncompressed_size);
+
+ printf("dict=%" PRIu32 "\n", dict);
+
+ printf("lc=%u\nlp=%u\npb=%u\n\n", lc, lp, pb);
+
+ } else {
+ printf("File name: ");
+ print_escaped(handle->name);
+ printf("\nFile format: LZMA_Alone\n")
+
+ printf("Uncompressed size: ");
+ if (uncompressed_size == UINT64_MAX)
+ printf("unknown\n");
+ else
+ printf("%," PRIu64 " bytes (%" PRIu64 " MiB)\n",
+ uncompressed_size,
+ (uncompressed_size + 1024 * 512)
+ / (1024 * 1024));
+
+ printf("Dictionary size: %," PRIu32 " bytes "
+ "(%" PRIu32 " MiB)\n",
+ dict, (dict + 1024 * 512) / (1024 * 1024));
+
+ printf("Literal context bits (lc): %u\n", lc);
+ printf("Literal position bits (lc): %u\n", lp);
+ printf("Position bits (pb): %u\n", pb);
+ }
+
+ return;
+}
+
+
+
+
+typedef struct {
+ const char *filename;
+ struct stat st;
+ int fd;
+
+ lzma_stream strm;
+ lzma_stream_flags stream_flags;
+ lzma_info *info;
+
+ lzma_vli backward_size;
+ lzma_vli uncompressed_size;
+
+ size_t buffer_size;
+ uint8_t buffer[IO_BUFFER_SIZE];
+} listing_handle;
+
+
+static bool
+listing_pread(listing_handle *handle, uint64_t offset)
+{
+ if (offset >= (uint64_t)(handle->st.st_size)) {
+ errmsg(V_ERROR, "%s: Trying to read past the end of "
+ "the file.", handle->filename);
+ return true;
+ }
+
+#ifdef HAVE_PREAD
+ const ssize_t ret = pread(handle->fd, handle->buffer, IO_BUFFER_SIZE,
+ (off_t)(offset));
+#else
+ // Use lseek() + read() since we don't have pread(). We don't care
+ // to which offset the reading position is left.
+ if (lseek(handle->fd, (off_t)(offset), SEEK_SET) == -1) {
+ errmsg(V_ERROR, "%s: %s", handle->filename, strerror(errno));
+ return true;
+ }
+
+ const ssize_t ret = read(handle->fd, handle->buffer, IO_BUFFER_SIZE);
+#endif
+
+ if (ret == -1) {
+ errmsg(V_ERROR, "%s: %s", handle->filename, strerror(errno));
+ return true;
+ }
+
+ if (ret == 0) {
+ errmsg(V_ERROR, "%s: Trying to read past the end of "
+ "the file.", handle->filename);
+ return true;
+ }
+
+ handle->buffer_size = (size_t)(ret);
+ return false;
+}
+
+
+
+static bool
+parse_stream_header(listing_handle *handle)
+{
+ if (listing_pread(handle, 0))
+ return true;
+
+ // TODO Got enough input?
+
+ lzma_ret ret = lzma_stream_header_decoder(
+ &handle->strm, &handle->stream_flags);
+ if (ret != LZMA_OK) {
+ errmsg(V_ERROR, "%s: %s", handle->name, str_strm_error(ret));
+ return true;
+ }
+
+ handle->strm.next_in = handle->buffer;
+ handle->strm.avail_in = handle->buffer_size;
+ ret = lzma_code(&handle->strm, LZMA_RUN);
+ if (ret != LZMA_STREAM_END) {
+ assert(ret != LZMA_OK);
+ errmsg(V_ERROR, "%s: %s", handle->name, str_strm_error(ret));
+ return true;
+ }
+
+ return false;
+}
+
+
+static bool
+parse_stream_tail(listing_handle *handle)
+{
+ uint64_t offset = (uint64_t)(handle->st.st_size);
+
+ // Skip padding
+ do {
+ if (offset == 0) {
+ errmsg(V_ERROR, "%s: %s", handle->name,
+ str_strm_error(LZMA_DATA_ERROR));
+ return true;
+ }
+
+ if (offset < IO_BUFFER_SIZE)
+ offset = 0;
+ else
+ offset -= IO_BUFFER_SIZE;
+
+ if (listing_pread(handle, offset))
+ return true;
+
+ while (handle->buffer_size > 0
+ && handle->buffer[handle->buffer_size - 1]
+ == '\0')
+ --handle->buffer_size;
+
+ } while (handle->buffer_size == 0);
+
+ if (handle->buffer_size < LZMA_STREAM_TAIL_SIZE) {
+ // TODO
+ }
+
+ lzma_stream_flags stream_flags;
+ lzma_ret ret = lzma_stream_tail_decoder(&handle->strm, &stream_flags);
+ if (ret != LZMA_OK) {
+ errmsg(V_ERROR, "%s: %s", handle->name, str_strm_error(ret));
+ return true;
+ }
+
+ handle->strm.next_in = handle->buffer + handle->buffer_size
+ - LZMA_STREAM_TAIL_SIZE;
+ handle->strm.avail_in = LZMA_STREAM_TAIL_SIZE;
+ handle->buffer_size -= LZMA_STREAM_TAIL_SIZE;
+ ret = lzma_code(&handle->strm, LZMA_RUN);
+ if (ret != LZMA_OK) {
+ assert(ret != LZMA_OK);
+ errmsg(V_ERROR, "%s: %s", handle->name, str_strm_error(ret));
+ return true;
+ }
+
+ if (!lzma_stream_flags_is_equal(handle->stream_flags, stream_flags)) {
+ // TODO
+ // Possibly corrupt, possibly concatenated file.
+ }
+
+ handle->backward_size = 0;
+ ret = lzma_vli_reverse_decode(&handle->backward_size, handle->buffer,
+ &handle->buffer_size);
+ if (ret != LZMA_OK) {
+ // It may be LZMA_BUF_ERROR too, but it doesn't make sense
+ // as an error message displayed to the user.
+ errmsg(V_ERROR, "%s: %s", handle->name,
+ str_strm_error(LZMA_DATA_ERROR));
+ return true;
+ }
+
+ if (!stream_flags.is_multi) {
+ handle->uncompressed_size = 0;
+ size_t tmp = handle->buffer_size;
+ ret = lzma_vli_reverse_decode(&handle->uncompressed_size,
+ handle->buffer, &tmp);
+ if (ret != LZMA_OK)
+ handle->uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ }
+
+ // Calculate the Header Metadata Block start offset.
+
+
+ return false;
+}
+
+
+
+static void
+list_native(listing_handle *handle)
+{
+ lzma_memory_limitter *limitter
+ = lzma_memory_limitter_create(opt_memory);
+ if (limitter == NULL) {
+ errmsg(V_ERROR,
+ }
+ lzma_info *info =
+
+
+ // Parse Stream Header
+ //
+ // Single-Block Stream:
+ // - Parse Block Header
+ // - Parse Stream Footer
+ // - If Backward Size doesn't match, error out
+ //
+ // Multi-Block Stream:
+ // - Parse Header Metadata Block, if any
+ // - Parse Footer Metadata Block
+ // - Parse Stream Footer
+ // - If Footer Metadata Block doesn't match the Stream, error out
+ //
+ // In other words, we don't support concatened files.
+ if (parse_stream_header(handle))
+ return;
+
+ if (parse_block_header(handle))
+ return;
+
+ if (handle->stream_flags.is_multi) {
+ if (handle->block_options.is_metadata) {
+ if (parse_metadata(handle)
+ return;
+ }
+
+ if (my_seek(handle,
+
+ } else {
+ if (handle->block_options.is_metadata) {
+ FILE_IS_CORRUPT();
+ return;
+ }
+
+ if (parse_stream_footer(handle))
+ return;
+
+ // If Uncompressed Size isn't present in Block Header,
+ // it must be present in Stream Footer.
+ if (handle->block_options.uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN
+ && handle->stream_flags.uncompressed_size
+ == LZMA_VLI_VALUE_UNKNOWN) {
+ FILE_IS_CORRUPT();
+ return;
+ }
+
+ // Construct a single-Record Index.
+ lzma_index *index = malloc(sizeof(lzma_index));
+ if (index == NULL) {
+ out_of_memory();
+ return;
+ }
+
+ // Pohdintaa:
+ // Jos Block coder hoitaisi Uncompressed ja Backward Sizet,
+ // voisi index->total_sizeksi laittaa suoraan Backward Sizen.
+ index->total_size =
+
+ if () {
+
+ }
+ }
+
+
+ if (handle->block_options.is_metadata) {
+ if (!handle->stream_flags.is_multi) {
+ FILE_IS_CORRUPT();
+ return;
+ }
+
+ if (parse_metadata(handle))
+ return;
+
+ }
+}
+
+
+
+extern void
+list(const char *filename)
+{
+ if (strcmp(filename, "-") == 0) {
+ errmsg(V_ERROR, "%s: --list does not support reading from "
+ "standard input", filename);
+ return;
+ }
+
+ if (is_empty_filename(filename))
+ return;
+
+ listing_handle handle;
+ handle.filename = filename;
+
+ handle.fd = open(filename, O_RDONLY | O_NOCTTY);
+ if (handle.fd == -1) {
+ errmsg(V_ERROR, "%s: %s", filename, strerror(errno));
+ return;
+ }
+
+ if (fstat(handle.fd, &handle.st)) {
+ errmsg(V_ERROR, "%s: %s", filename, strerror(errno));
+ goto out;
+ }
+
+ if (!S_ISREG(handle.st.st_mode)) {
+ errmsg(V_WARNING, _("%s: Not a regular file, skipping"),
+ filename);
+ goto out;
+ }
+
+ if (handle.st.st_size <= 0) {
+ errmsg(V_ERROR, _("%s: File is empty"), filename);
+ goto out;
+ }
+
+ if (listing_pread(&handle, 0))
+ goto out;
+
+ if (handle.buffer[0] == 0xFF) {
+ if (opt_header == HEADER_ALONE) {
+ errmsg(V_ERROR, "%s: FIXME", filename); // FIXME
+ goto out;
+ }
+
+ list_native(&handle);
+ } else {
+ if (opt_header != HEADER_AUTO && opt_header != HEADER_ALONE) {
+ errmsg(V_ERROR, "%s: FIXME", filename); // FIXME
+ goto out;
+ }
+
+ list_alone(&handle);
+ }
+
+out:
+ (void)close(fd);
+ return;
+}
diff --git a/src/lzma/main.c b/src/lzma/main.c
new file mode 100644
index 0000000..26edc47
--- /dev/null
+++ b/src/lzma/main.c
@@ -0,0 +1,254 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file main.c
+/// \brief main()
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+#include "open_stdxxx.h"
+#include <ctype.h>
+
+static sig_atomic_t exit_signal = 0;
+
+
+static void
+signal_handler(int sig)
+{
+ // FIXME Is this thread-safe together with main()?
+ exit_signal = sig;
+
+ user_abort = 1;
+ return;
+}
+
+
+static void
+establish_signal_handlers(void)
+{
+ struct sigaction sa;
+ sa.sa_handler = &signal_handler;
+ sigfillset(&sa.sa_mask);
+ sa.sa_flags = 0;
+
+ static const int sigs[] = {
+ SIGHUP,
+ SIGINT,
+ SIGPIPE,
+ SIGTERM,
+ SIGXCPU,
+ SIGXFSZ,
+ };
+
+ for (size_t i = 0; i < sizeof(sigs) / sizeof(sigs[0]); ++i) {
+ if (sigaction(sigs[i], &sa, NULL)) {
+ errmsg(V_ERROR, _("Cannot establish signal handlers"));
+ my_exit(ERROR);
+ }
+ }
+
+ /*
+ SIGINFO/SIGUSR1 for status reporting?
+ */
+}
+
+
+static bool
+is_tty_stdin(void)
+{
+ const bool ret = isatty(STDIN_FILENO);
+ if (ret) {
+ // FIXME: Other threads may print between these lines.
+ // Maybe that should be fixed. Not a big issue in practice.
+ errmsg(V_ERROR, _("Compressed data not read from "
+ "a terminal."));
+ errmsg(V_ERROR, _("Use `--force' to force decompression."));
+ show_try_help();
+ }
+
+ return ret;
+}
+
+
+static bool
+is_tty_stdout(void)
+{
+ const bool ret = isatty(STDOUT_FILENO);
+ if (ret) {
+ errmsg(V_ERROR, _("Compressed data not written to "
+ "a terminal."));
+ errmsg(V_ERROR, _("Use `--force' to force decompression."));
+ show_try_help();
+ }
+
+ return ret;
+}
+
+
+static char *
+read_name(void)
+{
+ size_t size = 256;
+ size_t pos = 0;
+ char *name = malloc(size);
+ if (name == NULL) {
+ out_of_memory();
+ return NULL;
+ }
+
+ while (true) {
+ const int c = fgetc(opt_files_file);
+ if (c == EOF) {
+ free(name);
+
+ if (ferror(opt_files_file))
+ errmsg(V_ERROR, _("%s: Error reading "
+ "filenames: %s"),
+ opt_files_name,
+ strerror(errno));
+ else if (pos != 0)
+ errmsg(V_ERROR, _("%s: Unexpected end of "
+ "input when reading "
+ "filenames"), opt_files_name);
+
+ return NULL;
+ }
+
+ if (c == '\0' || c == opt_files_split)
+ break;
+
+ name[pos++] = c;
+
+ if (pos == size) {
+ size *= 2;
+ char *tmp = realloc(name, size);
+ if (tmp == NULL) {
+ free(name);
+ out_of_memory();
+ return NULL;
+ }
+
+ name = tmp;
+ }
+ }
+
+ if (name != NULL)
+ name[pos] = '\0';
+
+ return name;
+}
+
+
+int
+main(int argc, char **argv)
+{
+ // Make sure that stdin, stdout, and and stderr are connected to
+ // a valid file descriptor. Exit immediatelly with exit code ERROR
+ // if we cannot make the file descriptors valid. Maybe we should
+ // print an error message, but our stderr could be screwed anyway.
+ open_stdxxx(ERROR);
+
+ // Set the program invocation name used in various messages.
+ argv0 = argv[0];
+
+ setlocale(LC_ALL, "en_US.UTF-8");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+
+ // Set hardware-dependent default values. These can be overriden
+ // on the command line, thus this must be done before parse_args().
+ hardware_init();
+
+ char **files = parse_args(argc, argv);
+
+ if (opt_mode == MODE_COMPRESS && opt_stdout && is_tty_stdout())
+ return ERROR;
+
+ if (opt_mode == MODE_COMPRESS)
+ lzma_init_encoder();
+ else
+ lzma_init_decoder();
+
+ io_init();
+ process_init();
+
+ if (opt_mode == MODE_LIST) {
+ errmsg(V_ERROR, "--list is not implemented yet.");
+ my_exit(ERROR);
+ }
+
+ // Hook the signal handlers. We don't need these before we start
+ // the actual action, so this is done after parsing the command
+ // line arguments.
+ establish_signal_handlers();
+
+ while (*files != NULL && !user_abort) {
+ if (strcmp("-", *files) == 0) {
+ if (!opt_force) {
+ if (opt_mode == MODE_COMPRESS) {
+ if (is_tty_stdout()) {
+ ++files;
+ continue;
+ }
+ } else if (is_tty_stdin()) {
+ ++files;
+ continue;
+ }
+ }
+
+ if (opt_files_name == stdin_filename) {
+ errmsg(V_ERROR, _("Cannot read data from "
+ "standard input when "
+ "reading filenames "
+ "from standard input"));
+ ++files;
+ continue;
+ }
+
+ *files = (char *)stdin_filename;
+ }
+
+ process_file(*files++);
+ }
+
+ if (opt_files_name != NULL) {
+ while (true) {
+ char *name = read_name();
+ if (name == NULL)
+ break;
+
+ if (name[0] != '\0')
+ process_file(name);
+
+ free(name);
+ }
+
+ if (opt_files_name != stdin_filename)
+ (void)fclose(opt_files_file);
+ }
+
+ io_finish();
+
+ if (exit_signal != 0) {
+ struct sigaction sa;
+ sa.sa_handler = SIG_DFL;
+ sigfillset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ sigaction(exit_signal, &sa, NULL);
+ raise(exit_signal);
+ }
+
+ my_exit(exit_status);
+}
diff --git a/src/lzma/options.c b/src/lzma/options.c
new file mode 100644
index 0000000..2928aaf
--- /dev/null
+++ b/src/lzma/options.c
@@ -0,0 +1,346 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file options.c
+/// \brief Parser for filter-specific options
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+
+///////////////////
+// Generic stuff //
+///////////////////
+
+typedef struct {
+ const char *name;
+ uint64_t id;
+} name_id_map;
+
+
+typedef struct {
+ const char *name;
+ const name_id_map *map;
+ uint64_t min;
+ uint64_t max;
+} option_map;
+
+
+/// Parses option=value pairs that are separated with colons, semicolons,
+/// or commas: opt=val:opt=val;opt=val,opt=val
+///
+/// Each option is a string, that is converted to an integer using the
+/// index where the option string is in the array.
+///
+/// Value can be either a number with minimum and maximum value limit, or
+/// a string-id map mapping a list of possible string values to integers.
+///
+/// When parsing both option and value succeed, a filter-specific function
+/// is called, which should update the given value to filter-specific
+/// options structure.
+///
+/// \param str String containing the options from the command line
+/// \param opts Filter-specific option map
+/// \param set Filter-specific function to update filter_options
+/// \param filter_options Pointer to filter-specific options structure
+///
+/// \return Returns only if no errors occur.
+///
+static void
+parse_options(const char *str, const option_map *opts,
+ void (*set)(void *filter_options,
+ uint32_t key, uint64_t value),
+ void *filter_options)
+{
+ if (str == NULL || str[0] == '\0')
+ return;
+
+ char *s = xstrdup(str);
+ char *name = s;
+
+ while (true) {
+ char *split = strchr(name, ',');
+ if (split != NULL)
+ *split = '\0';
+
+ char *value = strchr(name, '=');
+ if (value != NULL)
+ *value++ = '\0';
+
+ if (value == NULL || value[0] == '\0') {
+ errmsg(V_ERROR, _("%s: Options must be `name=value' "
+ "pairs separated with commas"),
+ str);
+ my_exit(ERROR);
+ }
+
+ // Look for the option name from the option map.
+ bool found = false;
+ for (size_t i = 0; opts[i].name != NULL; ++i) {
+ if (strcmp(name, opts[i].name) != 0)
+ continue;
+
+ if (opts[i].map == NULL) {
+ // value is an integer.
+ const uint64_t v = str_to_uint64(name, value,
+ opts[i].min, opts[i].max);
+ set(filter_options, i, v);
+ } else {
+ // value is a string which we should map
+ // to an integer.
+ size_t j;
+ for (j = 0; opts[i].map[j].name != NULL; ++j) {
+ if (strcmp(opts[i].map[j].name, value)
+ == 0)
+ break;
+ }
+
+ if (opts[i].map[j].name == NULL) {
+ errmsg(V_ERROR, _("%s: Invalid option "
+ "value"), value);
+ my_exit(ERROR);
+ }
+
+ set(filter_options, i, j);
+ }
+
+ found = true;
+ break;
+ }
+
+ if (!found) {
+ errmsg(V_ERROR, _("%s: Invalid option name"), name);
+ my_exit(ERROR);
+ }
+
+ if (split == NULL)
+ break;
+
+ name = split + 1;
+ }
+
+ free(s);
+ return;
+}
+
+
+//////////////
+// Subblock //
+//////////////
+
+enum {
+ OPT_SIZE,
+ OPT_RLE,
+ OPT_ALIGN,
+};
+
+
+static void
+set_subblock(void *options, uint32_t key, uint64_t value)
+{
+ lzma_options_subblock *opt = options;
+
+ switch (key) {
+ case OPT_SIZE:
+ opt->subblock_data_size = value;
+ break;
+
+ case OPT_RLE:
+ opt->rle = value;
+ break;
+
+ case OPT_ALIGN:
+ opt->alignment = value;
+ break;
+ }
+}
+
+
+extern lzma_options_subblock *
+parse_options_subblock(const char *str)
+{
+ static const option_map opts[] = {
+ { "size", NULL, LZMA_SUBBLOCK_DATA_SIZE_MIN,
+ LZMA_SUBBLOCK_DATA_SIZE_MAX },
+ { "rle", NULL, LZMA_SUBBLOCK_RLE_OFF,
+ LZMA_SUBBLOCK_RLE_MAX },
+ { "align",NULL, LZMA_SUBBLOCK_ALIGNMENT_MIN,
+ LZMA_SUBBLOCK_ALIGNMENT_MAX },
+ { NULL, NULL, 0, 0 }
+ };
+
+ lzma_options_subblock *options
+ = xmalloc(sizeof(lzma_options_subblock));
+ *options = (lzma_options_subblock){
+ .allow_subfilters = false,
+ .alignment = LZMA_SUBBLOCK_ALIGNMENT_DEFAULT,
+ .subblock_data_size = LZMA_SUBBLOCK_DATA_SIZE_DEFAULT,
+ .rle = LZMA_SUBBLOCK_RLE_OFF,
+ };
+
+ parse_options(str, opts, &set_subblock, options);
+
+ return options;
+}
+
+
+///////////
+// Delta //
+///////////
+
+enum {
+ OPT_DISTANCE,
+};
+
+
+static void
+set_delta(void *options, uint32_t key, uint64_t value)
+{
+ lzma_options_delta *opt = options;
+ switch (key) {
+ case OPT_DISTANCE:
+ opt->distance = value;
+ break;
+ }
+}
+
+
+extern lzma_options_delta *
+parse_options_delta(const char *str)
+{
+ static const option_map opts[] = {
+ { "distance", NULL, LZMA_DELTA_DISTANCE_MIN,
+ LZMA_DELTA_DISTANCE_MAX },
+ { NULL, NULL, 0, 0 }
+ };
+
+ lzma_options_delta *options = xmalloc(sizeof(lzma_options_subblock));
+ *options = (lzma_options_delta){
+ // It's hard to give a useful default for this.
+ .distance = LZMA_DELTA_DISTANCE_MIN,
+ };
+
+ parse_options(str, opts, &set_delta, options);
+
+ return options;
+}
+
+
+//////////
+// LZMA //
+//////////
+
+enum {
+ OPT_DICT,
+ OPT_LC,
+ OPT_LP,
+ OPT_PB,
+ OPT_MODE,
+ OPT_FB,
+ OPT_MF,
+ OPT_MC
+};
+
+
+static void
+set_lzma(void *options, uint32_t key, uint64_t value)
+{
+ lzma_options_lzma *opt = options;
+
+ switch (key) {
+ case OPT_DICT:
+ opt->dictionary_size = value;
+ break;
+
+ case OPT_LC:
+ opt->literal_context_bits = value;
+ break;
+
+ case OPT_LP:
+ opt->literal_pos_bits = value;
+ break;
+
+ case OPT_PB:
+ opt->pos_bits = value;
+ break;
+
+ case OPT_MODE:
+ opt->mode = value;
+ break;
+
+ case OPT_FB:
+ opt->fast_bytes = value;
+ break;
+
+ case OPT_MF:
+ opt->match_finder = value;
+ break;
+
+ case OPT_MC:
+ opt->match_finder_cycles = value;
+ break;
+ }
+}
+
+
+extern lzma_options_lzma *
+parse_options_lzma(const char *str)
+{
+ static const name_id_map modes[] = {
+ { "fast", LZMA_MODE_FAST },
+ { "best", LZMA_MODE_BEST },
+ { NULL, 0 }
+ };
+
+ static const name_id_map mfs[] = {
+ { "hc3", LZMA_MF_HC3 },
+ { "hc4", LZMA_MF_HC4 },
+ { "bt2", LZMA_MF_BT2 },
+ { "bt3", LZMA_MF_BT3 },
+ { "bt4", LZMA_MF_BT4 },
+ { NULL, 0 }
+ };
+
+ static const option_map opts[] = {
+ { "dict", NULL, LZMA_DICTIONARY_SIZE_MIN,
+ LZMA_DICTIONARY_SIZE_MAX },
+ { "lc", NULL, LZMA_LITERAL_CONTEXT_BITS_MIN,
+ LZMA_LITERAL_CONTEXT_BITS_MAX },
+ { "lp", NULL, LZMA_LITERAL_POS_BITS_MIN,
+ LZMA_LITERAL_POS_BITS_MAX },
+ { "pb", NULL, LZMA_POS_BITS_MIN, LZMA_POS_BITS_MAX },
+ { "mode", modes, 0, 0 },
+ { "fb", NULL, LZMA_FAST_BYTES_MIN, LZMA_FAST_BYTES_MAX },
+ { "mf", mfs, 0, 0 },
+ { "mc", NULL, 0, UINT32_MAX },
+ { NULL, NULL, 0, 0 }
+ };
+
+ lzma_options_lzma *options = xmalloc(sizeof(lzma_options_lzma));
+ *options = (lzma_options_lzma){
+ .dictionary_size = LZMA_DICTIONARY_SIZE_DEFAULT,
+ .literal_context_bits = LZMA_LITERAL_CONTEXT_BITS_DEFAULT,
+ .literal_pos_bits = LZMA_LITERAL_POS_BITS_DEFAULT,
+ .pos_bits = LZMA_POS_BITS_DEFAULT,
+ .mode = LZMA_MODE_BEST,
+ .fast_bytes = LZMA_FAST_BYTES_DEFAULT,
+ .match_finder = LZMA_MF_BT4,
+ .match_finder_cycles = 0,
+ };
+
+ parse_options(str, opts, &set_lzma, options);
+
+ return options;
+}
diff --git a/src/lzma/options.h b/src/lzma/options.h
new file mode 100644
index 0000000..885c596
--- /dev/null
+++ b/src/lzma/options.h
@@ -0,0 +1,46 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file options.h
+/// \brief Parser for filter-specific options
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef OPTIONS_H
+#define OPTIONS_H
+
+#include "private.h"
+
+
+/// \brief Parser for Subblock options
+///
+/// \return Pointer to allocated options structure.
+/// Doesn't return on error.
+extern lzma_options_subblock *parse_options_subblock(const char *str);
+
+
+/// \brief Parser for Delta options
+///
+/// \return Pointer to allocated options structure.
+/// Doesn't return on error.
+extern lzma_options_delta *parse_options_delta(const char *str);
+
+
+/// \brief Parser for LZMA options
+///
+/// \return Pointer to allocated options structure.
+/// Doesn't return on error.
+extern lzma_options_lzma *parse_options_lzma(const char *str);
+
+#endif
diff --git a/src/lzma/private.h b/src/lzma/private.h
new file mode 100644
index 0000000..89afac9
--- /dev/null
+++ b/src/lzma/private.h
@@ -0,0 +1,55 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file private.h
+/// \brief Common includes, definions, and prototypes
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef PRIVATE_H
+#define PRIVATE_H
+
+#include "sysdefs.h"
+
+#ifdef HAVE_ERRNO_H
+# include <errno.h>
+#else
+extern int errno;
+#endif
+
+#include <sys/stat.h>
+#include <limits.h>
+#include <signal.h>
+#include <pthread.h>
+#include <locale.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "gettext.h"
+#define _(msgid) gettext(msgid)
+#define N_(msgid1, msgid2, n) ngettext(msgid1, msgid2, n)
+
+#include "alloc.h"
+#include "args.h"
+#include "error.h"
+#include "hardware.h"
+#include "help.h"
+#include "io.h"
+#include "options.h"
+#include "process.h"
+#include "suffix.h"
+#include "util.h"
+
+#endif
diff --git a/src/lzma/process.c b/src/lzma/process.c
new file mode 100644
index 0000000..10a76b7
--- /dev/null
+++ b/src/lzma/process.c
@@ -0,0 +1,458 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file process.c
+/// \brief Compresses or uncompresses a file
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+
+typedef struct {
+ lzma_stream strm;
+ void *options;
+
+ file_pair *pair;
+
+ /// We don't need this for *anything* but seems that at least with
+ /// glibc pthread_create() doesn't allow NULL.
+ pthread_t thread;
+
+ bool in_use;
+
+} thread_data;
+
+
+/// Number of available threads
+static size_t free_threads;
+
+/// Thread-specific data
+static thread_data *threads;
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+
+/// Attributes of new coder threads. They are created in detached state.
+/// Coder threads signal to the service thread themselves when they are done.
+static pthread_attr_t thread_attr;
+
+
+//////////
+// Init //
+//////////
+
+extern void
+process_init(void)
+{
+ threads = malloc(sizeof(thread_data) * opt_threads);
+ if (threads == NULL) {
+ out_of_memory();
+ my_exit(ERROR);
+ }
+
+ for (size_t i = 0; i < opt_threads; ++i)
+ threads[i] = (thread_data){
+ .strm = LZMA_STREAM_INIT_VAR,
+ .options = NULL,
+ .pair = NULL,
+ .in_use = false,
+ };
+
+ if (pthread_attr_init(&thread_attr)
+ || pthread_attr_setdetachstate(
+ &thread_attr, PTHREAD_CREATE_DETACHED)) {
+ out_of_memory();
+ my_exit(ERROR);
+ }
+
+ free_threads = opt_threads;
+
+ return;
+}
+
+
+//////////////////////////
+// Thread-specific data //
+//////////////////////////
+
+static thread_data *
+get_thread_data(void)
+{
+ pthread_mutex_lock(&mutex);
+
+ while (free_threads == 0) {
+ pthread_cond_wait(&cond, &mutex);
+
+ if (user_abort) {
+ pthread_cond_signal(&cond);
+ pthread_mutex_unlock(&mutex);
+ return NULL;
+ }
+ }
+
+ thread_data *t = threads;
+ while (t->in_use)
+ ++t;
+
+ t->in_use = true;
+ --free_threads;
+
+ pthread_mutex_unlock(&mutex);
+
+ return t;
+}
+
+
+static void
+release_thread_data(thread_data *t)
+{
+ pthread_mutex_lock(&mutex);
+
+ t->in_use = false;
+ ++free_threads;
+
+ pthread_cond_signal(&cond);
+ pthread_mutex_unlock(&mutex);
+
+ return;
+}
+
+
+static int
+create_thread(void *(*func)(thread_data *t), thread_data *t)
+{
+ if (opt_threads == 1) {
+ func(t);
+ } else {
+ const int err = pthread_create(&t->thread, &thread_attr,
+ (void *(*)(void *))(func), t);
+ if (err) {
+ errmsg(V_ERROR, _("Cannot create a thread: %s"),
+ strerror(err));
+ user_abort = 1;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+/////////////////////////
+// One thread per file //
+/////////////////////////
+
+static int
+single_init(thread_data *t)
+{
+ lzma_ret ret;
+
+ if (opt_mode == MODE_COMPRESS) {
+ const lzma_vli uncompressed_size
+ = t->pair->src_fd != STDIN_FILENO
+ ? (lzma_vli)(t->pair->src_st.st_size)
+ : LZMA_VLI_VALUE_UNKNOWN;
+
+ // TODO Support Multi-Block Streams to store Extra.
+ if (opt_header == HEADER_ALONE) {
+ lzma_options_alone alone;
+ alone.uncompressed_size = uncompressed_size;
+ memcpy(&alone.lzma, opt_filters[0].options,
+ sizeof(alone.lzma));
+ ret = lzma_alone_encoder(&t->strm, &alone);
+ } else {
+ lzma_options_stream stream = {
+ .check = opt_check,
+ .has_crc32 = true,
+ .uncompressed_size = uncompressed_size,
+ .alignment = 0,
+ };
+ memcpy(stream.filters, opt_filters,
+ sizeof(stream.filters));
+ ret = lzma_stream_encoder_single(&t->strm, &stream);
+ }
+ } else {
+ // TODO Restrict file format if requested on the command line.
+ ret = lzma_auto_decoder(&t->strm, NULL, NULL);
+ }
+
+ if (ret != LZMA_OK) {
+ if (ret == LZMA_MEM_ERROR)
+ out_of_memory();
+ else
+ internal_error();
+
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static lzma_ret
+single_skip_padding(thread_data *t, uint8_t *in_buf)
+{
+ // Handle decoding of concatenated Streams. There can be arbitrary
+ // number of nul-byte padding between the Streams, which must be
+ // ignored.
+ //
+ // NOTE: Concatenating LZMA_Alone files works only if at least
+ // one of lc, lp, and pb is non-zero. Using the concatenation
+ // on LZMA_Alone files is strongly discouraged.
+ while (true) {
+ while (t->strm.avail_in > 0) {
+ if (*t->strm.next_in != '\0')
+ return LZMA_OK;
+
+ ++t->strm.next_in;
+ --t->strm.avail_in;
+ }
+
+ if (t->pair->src_eof)
+ return LZMA_STREAM_END;
+
+ t->strm.next_in = in_buf;
+ t->strm.avail_in = io_read(t->pair, in_buf, BUFSIZ);
+ if (t->strm.avail_in == SIZE_MAX)
+ return LZMA_DATA_ERROR;
+ }
+}
+
+
+static void *
+single(thread_data *t)
+{
+ if (single_init(t)) {
+ io_close(t->pair, false);
+ release_thread_data(t);
+ return NULL;
+ }
+
+ uint8_t in_buf[BUFSIZ];
+ uint8_t out_buf[BUFSIZ];
+ lzma_action action = LZMA_RUN;
+ lzma_ret ret;
+ bool success = false;
+
+ t->strm.avail_in = 0;
+
+ while (!user_abort) {
+ if (t->strm.avail_in == 0 && !t->pair->src_eof) {
+ t->strm.next_in = in_buf;
+ t->strm.avail_in = io_read(t->pair, in_buf, BUFSIZ);
+
+ if (t->strm.avail_in == SIZE_MAX)
+ break;
+ else if (t->pair->src_eof
+ && opt_mode == MODE_COMPRESS)
+ action = LZMA_FINISH;
+ }
+
+ t->strm.next_out = out_buf;
+ t->strm.avail_out = BUFSIZ;
+
+ ret = lzma_code(&t->strm, action);
+
+ if (opt_mode != MODE_TEST)
+ if (io_write(t->pair, out_buf,
+ BUFSIZ - t->strm.avail_out))
+ break;
+
+ if (ret != LZMA_OK) {
+ if (ret == LZMA_STREAM_END) {
+ if (opt_mode == MODE_COMPRESS) {
+ success = true;
+ break;
+ }
+
+ // Support decoding concatenated .lzma files.
+ ret = single_skip_padding(t, in_buf);
+
+ if (ret == LZMA_STREAM_END) {
+ assert(t->pair->src_eof);
+ success = true;
+ break;
+ }
+
+ if (ret == LZMA_OK && !single_init(t))
+ continue;
+
+ break;
+
+ } else {
+ errmsg(V_ERROR, "%s: %s", t->pair->src_name,
+ str_strm_error(ret));
+ break;
+ }
+ }
+ }
+
+ io_close(t->pair, success);
+ release_thread_data(t);
+
+ return NULL;
+}
+
+
+///////////////////////////////
+// Multiple threads per file //
+///////////////////////////////
+
+// TODO
+
+// I'm not sure what would the best way to implement this. Here's one
+// possible way:
+// - Reader thread would read the input data and control the coders threads.
+// - Every coder thread is associated with input and output buffer pools.
+// The input buffer pool is filled by reader thread, and the output buffer
+// pool is emptied by the writer thread.
+// - Writer thread writes the output data of the oldest living coder thread.
+//
+// The per-file thread started by the application's main thread is used as
+// the reader thread. In the beginning, it starts the writer thread and the
+// first coder thread. The coder thread would be left waiting for input from
+// the reader thread, and the writer thread would be waiting for input from
+// the coder thread.
+//
+// The reader thread reads the input data into a ring buffer, whose size
+// depends on the value returned by lzma_chunk_size(). If the ring buffer
+// gets full, the buffer is marked "to be finished", which indicates to
+// the coder thread that no more input is coming. Then a new coder thread
+// would be started.
+//
+// TODO
+
+/*
+typedef struct {
+ /// Buffers
+ uint8_t (*buffers)[BUFSIZ];
+
+ /// Number of buffers
+ size_t buffer_count;
+
+ /// buffers[read_pos] is the buffer currently being read. Once finish
+ /// is true and read_pos == write_pos, end of input has been reached.
+ size_t read_pos;
+
+ /// buffers[write_pos] is the buffer into which data is currently
+ /// being written.
+ size_t write_pos;
+
+ /// This variable matters only when read_pos == write_pos && finish.
+ /// In that case, this variable will contain the size of the
+ /// buffers[read_pos].
+ size_t last_size;
+
+ /// True once no more data is being written to the buffer. When this
+ /// is set, the last_size variable must have been set too.
+ bool finish;
+
+ /// Mutex to protect access to the variables in this structure
+ pthread_mutex_t mutex;
+
+ /// Condition to indicate when another thread can continue
+ pthread_cond_t cond;
+} mem_pool;
+
+
+static foo
+multi_reader(thread_data *t)
+{
+ bool done = false;
+
+ do {
+ const size_t size = io_read(t->pair,
+ m->buffers + m->write_pos, BUFSIZ);
+ if (size == SIZE_MAX) {
+ // TODO
+ } else if (t->pair->src_eof) {
+ m->last_size = size;
+ }
+
+ pthread_mutex_lock(&m->mutex);
+
+ if (++m->write_pos == m->buffer_count)
+ m->write_pos = 0;
+
+ if (m->write_pos == m->read_pos || t->pair->src_eof)
+ m->finish = true;
+
+ pthread_cond_signal(&m->cond);
+ pthread_mutex_unlock(&m->mutex);
+
+ } while (!m->finish);
+
+ return done ? 0 : -1;
+}
+
+
+static foo
+multi_code()
+{
+ lzma_action = LZMA_RUN;
+
+ while (true) {
+ pthread_mutex_lock(&m->mutex);
+
+ while (m->read_pos == m->write_pos && !m->finish)
+ pthread_cond_wait(&m->cond, &m->mutex);
+
+ pthread_mutex_unlock(&m->mutex);
+
+ if (m->finish) {
+ t->strm.avail_in = m->last_size;
+ if (opt_mode == MODE_COMPRESS)
+ action = LZMA_FINISH;
+ } else {
+ t->strm.avail_in = BUFSIZ;
+ }
+
+ t->strm.next_in = m->buffers + m->read_pos;
+
+ const lzma_ret ret = lzma_code(&t->strm, action);
+
+ }
+}
+
+*/
+
+
+///////////////////////
+// Starting new file //
+///////////////////////
+
+extern void
+process_file(const char *filename)
+{
+ thread_data *t = get_thread_data();
+ if (t == NULL)
+ return; // User abort
+
+ // If this fails, it shows appropriate error messages too.
+ t->pair = io_open(filename);
+ if (t->pair == NULL) {
+ release_thread_data(t);
+ return;
+ }
+
+ // TODO Currently only one-thread-per-file mode is implemented.
+
+ if (create_thread(&single, t)) {
+ io_close(t->pair, false);
+ release_thread_data(t);
+ }
+
+ return;
+}
diff --git a/src/lzma/process.h b/src/lzma/process.h
new file mode 100644
index 0000000..7fdfbce
--- /dev/null
+++ b/src/lzma/process.h
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file process.c
+/// \brief Compresses or uncompresses a file
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef PROCESS_H
+#define PROCESS_H
+
+#include "private.h"
+
+
+extern void process_init(void);
+
+extern void process_file(const char *filename);
+
+#endif
diff --git a/src/lzma/suffix.c b/src/lzma/suffix.c
new file mode 100644
index 0000000..57afce8
--- /dev/null
+++ b/src/lzma/suffix.c
@@ -0,0 +1,145 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file suffix.c
+/// \brief Checks filename suffix and creates the destination filename
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+
+static const struct {
+ const char *compressed;
+ const char *uncompressed;
+} suffixes[] = {
+ { ".lzma", "" },
+ { ".tlz", ".tar" },
+ { ".ylz", ".yar" },
+ { NULL, NULL }
+};
+
+
+/// \brief Checks if src_name has given compressed_suffix
+///
+/// \param suffix Filename suffix to look for
+/// \param src_name Input filename
+/// \param src_len strlen(src_name)
+///
+/// \return If src_name has the suffix, src_len - strlen(suffix) is
+/// returned. It's always a positive integer. Otherwise zero
+/// is returned.
+static size_t
+test_suffix(const char *suffix, const char *src_name, size_t src_len)
+{
+ const size_t suffix_len = strlen(suffix);
+
+ // The filename must have at least one character in addition to
+ // the suffix. src_name may contain path to the filename, so we
+ // need to check for directory separator too.
+ if (src_len <= suffix_len || src_name[src_len - suffix_len - 1] == '/')
+ return 0;
+
+ if (strcmp(suffix, src_name + src_len - suffix_len) == 0)
+ return src_len - suffix_len;
+
+ return 0;
+}
+
+
+/// \brief Removes the filename suffix of the compressed file
+///
+/// \return Name of the uncompressed file, or NULL if file has unknown
+/// suffix.
+static char *
+uncompressed_name(const char *src_name)
+{
+ const char *new_suffix = "";
+ const size_t src_len = strlen(src_name);
+ size_t new_len = 0;
+
+ for (size_t i = 0; suffixes[i].compressed != NULL; ++i) {
+ new_len = test_suffix(suffixes[i].compressed,
+ src_name, src_len);
+ if (new_len != 0) {
+ new_suffix = suffixes[i].uncompressed;
+ break;
+ }
+ }
+
+ if (new_len == 0 && opt_suffix != NULL)
+ new_len = test_suffix(opt_suffix, src_name, src_len);
+
+ if (new_len == 0) {
+ errmsg(V_WARNING, _("%s: Filename has an unknown suffix, "
+ "skipping"), src_name);
+ return NULL;
+ }
+
+ const size_t new_suffix_len = strlen(new_suffix);
+ char *dest_name = malloc(new_len + new_suffix_len + 1);
+ if (dest_name == NULL) {
+ out_of_memory();
+ return NULL;
+ }
+
+ memcpy(dest_name, src_name, new_len);
+ memcpy(dest_name + new_len, new_suffix, new_suffix_len);
+ dest_name[new_len + new_suffix_len] = '\0';
+
+ return dest_name;
+}
+
+
+/// \brief Appends suffix to src_name
+static char *
+compressed_name(const char *src_name)
+{
+ const size_t src_len = strlen(src_name);
+
+ for (size_t i = 0; suffixes[i].compressed != NULL; ++i) {
+ if (test_suffix(suffixes[i].compressed, src_name, src_len)
+ != 0) {
+ errmsg(V_WARNING, _("%s: File already has `%s' "
+ "suffix, skipping"), src_name,
+ suffixes[i].compressed);
+ return NULL;
+ }
+ }
+
+ const char *suffix = opt_suffix != NULL
+ ? opt_suffix : suffixes[0].compressed;
+ const size_t suffix_len = strlen(suffix);
+
+ char *dest_name = malloc(src_len + suffix_len + 1);
+ if (dest_name == NULL) {
+ out_of_memory();
+ return NULL;
+ }
+
+ memcpy(dest_name, src_name, src_len);
+ memcpy(dest_name + src_len, suffix, suffix_len);
+ dest_name[src_len + suffix_len] = '\0';
+
+ return dest_name;
+}
+
+
+extern char *
+get_dest_name(const char *src_name)
+{
+ return opt_mode == MODE_COMPRESS
+ ? compressed_name(src_name)
+ : uncompressed_name(src_name);
+}
diff --git a/src/lzma/suffix.h b/src/lzma/suffix.h
new file mode 100644
index 0000000..0831565
--- /dev/null
+++ b/src/lzma/suffix.h
@@ -0,0 +1,25 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file suffix.h
+/// \brief Checks filename suffix and creates the destination filename
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef SUFFIX_H
+#define SUFFIX_H
+
+extern char *get_dest_name(const char *src_name);
+
+#endif
diff --git a/src/lzma/util.c b/src/lzma/util.c
new file mode 100644
index 0000000..6ef6eb0
--- /dev/null
+++ b/src/lzma/util.c
@@ -0,0 +1,182 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file util.c
+/// \brief Miscellaneous utility functions
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "private.h"
+
+
+/// \brief Fancy version of strtoull()
+///
+/// \param name Name of the option to show in case of an error
+/// \param value String containing the number to be parsed; may
+/// contain suffixes "k", "M", "G", "Ki", "Mi", or "Gi"
+/// \param min Minimum valid value
+/// \param max Maximum valid value
+///
+/// \return Parsed value that is in the range [min, max]. Does not return
+/// if an error occurs.
+///
+extern uint64_t
+str_to_uint64(const char *name, const char *value, uint64_t min, uint64_t max)
+{
+ uint64_t result = 0;
+
+ // Skip blanks.
+ while (*value == ' ' || *value == '\t')
+ ++value;
+
+ if (*value < '0' || *value > '9') {
+ errmsg(V_ERROR, _("%s: Value is not a non-negative "
+ "decimal integer"),
+ value);
+ my_exit(ERROR);
+ }
+
+ do {
+ // Don't overflow.
+ if (result > (UINT64_MAX - 9) / 10)
+ goto error;
+
+ result *= 10;
+ result += *value - '0';
+ ++value;
+ } while (*value >= '0' && *value <= '9');
+
+ if (*value != '\0') {
+ // Look for suffix.
+ static const struct {
+ const char *name;
+ uint64_t multiplier;
+ } suffixes[] = {
+ { "k", UINT64_C(1000) },
+ { "M", UINT64_C(1000000) },
+ { "G", UINT64_C(1000000000) },
+ { "Ki", UINT64_C(1024) },
+ { "Mi", UINT64_C(1048576) },
+ { "Gi", UINT64_C(1073741824) },
+ { NULL, 0 }
+ };
+
+ uint64_t multiplier = 0;
+ for (size_t i = 0; suffixes[i].name != NULL; ++i) {
+ if (strcmp(value, suffixes[i].name) == 0) {
+ multiplier = suffixes[i].multiplier;
+ break;
+ }
+ }
+
+ if (multiplier == 0) {
+ errmsg(V_ERROR, _("%s: Invalid multiplier suffix. "
+ "Valid suffixes:"), value);
+ errmsg(V_ERROR, "`k' (10^3), `M' (10^6), `G' (10^9) "
+ "`Ki' (2^10), `Mi' (2^20), "
+ "`Gi' (2^30)");
+ my_exit(ERROR);
+ }
+
+ // Don't overflow here either.
+ if (result > UINT64_MAX / multiplier)
+ goto error;
+
+ result *= multiplier;
+ }
+
+ if (result < min || result > max)
+ goto error;
+
+ return result;
+
+error:
+ errmsg(V_ERROR, _("Value of the option `%s' must be in the range "
+ "[%llu, %llu]"), name,
+ (unsigned long long)(min),
+ (unsigned long long)(max));
+ my_exit(ERROR);
+}
+
+
+/// \brief Gets filename part from pathname+filename
+///
+/// \return Pointer in the filename where the actual filename starts.
+/// If the last character is a slash, NULL is returned.
+///
+extern const char *
+str_filename(const char *name)
+{
+ const char *base = strrchr(name, '/');
+
+ if (base == NULL) {
+ base = name;
+ } else if (*++base == '\0') {
+ base = NULL;
+ errmsg(V_ERROR, _("%s: Invalid filename"), name);
+ }
+
+ return base;
+}
+
+
+/*
+/// \brief Simple quoting to get rid of ASCII control characters
+///
+/// This is not so cool and locale-dependent, but should be good enough
+/// At least we don't print any control characters on the terminal.
+///
+extern char *
+str_quote(const char *str)
+{
+ size_t dest_len = 0;
+ bool has_ctrl = false;
+
+ while (str[dest_len] != '\0')
+ if (*(unsigned char *)(str + dest_len++) < 0x20)
+ has_ctrl = true;
+
+ char *dest = malloc(dest_len + 1);
+ if (dest != NULL) {
+ if (has_ctrl) {
+ for (size_t i = 0; i < dest_len; ++i)
+ if (*(unsigned char *)(str + i) < 0x20)
+ dest[i] = '?';
+ else
+ dest[i] = str[i];
+
+ dest[dest_len] = '\0';
+
+ } else {
+ // Usually there are no control characters,
+ // so we can optimize.
+ memcpy(dest, str, dest_len + 1);
+ }
+ }
+
+ return dest;
+}
+*/
+
+
+extern bool
+is_empty_filename(const char *filename)
+{
+ if (filename[0] == '\0') {
+ errmsg(V_WARNING, _("Empty filename, skipping"));
+ return true;
+ }
+
+ return false;
+}
diff --git a/src/lzma/util.h b/src/lzma/util.h
new file mode 100644
index 0000000..91bd9ba
--- /dev/null
+++ b/src/lzma/util.h
@@ -0,0 +1,32 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file util.h
+/// \brief Miscellaneous utility functions
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef UTIL_H
+#define UTIL_H
+
+#include "private.h"
+
+extern uint64_t str_to_uint64(const char *name, const char *value,
+ uint64_t min, uint64_t max);
+
+extern const char *str_filename(const char *filename);
+
+extern bool is_empty_filename(const char *filename);
+
+#endif
diff --git a/src/lzmadec/Makefile.am b/src/lzmadec/Makefile.am
new file mode 100644
index 0000000..63e391d
--- /dev/null
+++ b/src/lzmadec/Makefile.am
@@ -0,0 +1,27 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This program is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+bin_PROGRAMS = lzmadec
+
+lzmadec_SOURCES = lzmadec.c
+lzmadec_CPPFLAGS = \
+ -I@top_srcdir@/src/common \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_builddir@/lib
+lzmadec_LDFLAGS = -static
+lzmadec_LDADD = @top_builddir@/src/liblzma/liblzma.la
+
+if COND_GNULIB
+lzmadec_LDADD += @top_builddir@/lib/libgnu.a
+endif
diff --git a/src/lzmadec/lzmadec.c b/src/lzmadec/lzmadec.c
new file mode 100644
index 0000000..93eed09
--- /dev/null
+++ b/src/lzmadec/lzmadec.c
@@ -0,0 +1,515 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file lzmadec.c
+/// \brief Simple single-threaded tool to uncompress .lzma files
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+
+#ifdef HAVE_ERRNO_H
+# include <errno.h>
+#else
+extern int errno;
+#endif
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include "getopt.h"
+#include "physmem.h"
+
+
+enum return_code {
+ SUCCESS,
+ ERROR,
+ WARNING,
+};
+
+
+enum format_type {
+ FORMAT_AUTO,
+ FORMAT_NATIVE,
+ FORMAT_ALONE,
+};
+
+
+enum {
+ OPTION_FORMAT = INT_MIN,
+};
+
+
+/// Input buffer
+static uint8_t in_buf[BUFSIZ];
+
+/// Output buffer
+static uint8_t out_buf[BUFSIZ];
+
+/// Decoder
+static lzma_stream strm = LZMA_STREAM_INIT;
+
+/// Number of bytes to use memory at maximum
+static size_t mem_limit;
+
+/// Memory allocation hooks
+static lzma_allocator allocator = {
+ .alloc = (void *(*)(void *, size_t, size_t))(&lzma_memlimit_alloc),
+ .free = (void (*)(void *, void *))(&lzma_memlimit_free),
+ .opaque = NULL,
+};
+
+/// Program name to be shown in error messages
+static const char *argv0;
+
+/// File currently being processed
+static FILE *file;
+
+/// Name of the file currently being processed
+static const char *filename;
+
+static enum return_code exit_status = SUCCESS;
+
+static enum format_type format_type = FORMAT_AUTO;
+
+static bool force = false;
+
+
+static void lzma_attribute((noreturn))
+help(void)
+{
+ printf(
+"Usage: %s [OPTION]... [FILE]...\n"
+"Uncompress files in the .lzma format to the standard output.\n"
+"\n"
+" -c, --stdout (ignored)\n"
+" -d, --decompress (ignored)\n"
+" -k, --keep (ignored)\n"
+" -f, --force allow reading compressed data from a terminal\n"
+" -M, --memory=NUM use NUM bytes of memory at maximum; the suffixes\n"
+" k, M, G, Ki, Mi, and Gi are supported.\n"
+" --format=FMT accept only files in the given file format;\n"
+" possible FMTs are `auto', `native', `single',\n"
+" `multi', and `alone', of which `single' and `multi'\n"
+" are aliases for `native'\n"
+" -h, --help display this help and exit\n"
+" -V, --version display version and license information and exit\n"
+"\n"
+"With no FILE, or when FILE is -, read standard input.\n"
+"\n"
+"On this configuration, the tool will use about %zu MiB of memory at maximum.\n"
+"\n"
+"Report bugs to <" PACKAGE_BUGREPORT "> (in English or Finnish).\n",
+ argv0, (mem_limit + 512 * 1024) / (1024 * 1024));
+ exit(0);
+}
+
+
+static void lzma_attribute((noreturn))
+version(void)
+{
+ printf(
+"lzmadec (LZMA Utils) " PACKAGE_VERSION "\n"
+"\n"
+"Copyright (C) 1999-2006 Igor Pavlov\n"
+"Copyright (C) 2007 Lasse Collin\n"
+"\n"
+"This program is free software; you can redistribute it and/or\n"
+"modify it under the terms of the GNU Lesser General Public\n"
+"License as published by the Free Software Foundation; either\n"
+"version 2.1 of the License, or (at your option) any later version.\n"
+"\n"
+"This program is distributed in the hope that it will be useful,\n"
+"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
+"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU\n"
+"Lesser General Public License for more details.\n"
+"\n");
+ exit(0);
+}
+
+
+/// Finds out the amount of physical memory in the system, and sets
+/// a default memory usage limit.
+static void
+set_default_mem_limit(void)
+{
+ uint64_t mem = physmem();
+ if (mem != 0) {
+ mem /= 3;
+
+#if UINT64_MAX > SIZE_MAX
+ if (mem > SIZE_MAX)
+ mem = SIZE_MAX;
+#endif
+
+ mem_limit = mem / 3;
+ } else {
+ // Cannot autodetect, use 10 MiB as the default limit.
+ mem_limit = (1U << 23) + (1U << 21);
+ }
+
+ return;
+}
+
+
+/// \brief Converts a string to size_t
+///
+/// This is rudely copied from src/lzma/util.c and modified a little. :-(
+///
+static size_t
+str_to_size(const char *value)
+{
+ size_t result = 0;
+
+ if (*value < '0' || *value > '9') {
+ fprintf(stderr, "%s: %s: Not a number", argv0, value);
+ exit(ERROR);
+ }
+
+ do {
+ // Don't overflow.
+ if (result > (SIZE_MAX - 9) / 10)
+ return SIZE_MAX;
+
+ result *= 10;
+ result += *value - '0';
+ ++value;
+ } while (*value >= '0' && *value <= '9');
+
+ if (*value != '\0') {
+ // Look for suffix.
+ static const struct {
+ const char *name;
+ size_t multiplier;
+ } suffixes[] = {
+ { "k", 1000 },
+ { "M", 1000000 },
+ { "G", 1000000000 },
+ { "Ki", 1024 },
+ { "Mi", 1048576 },
+ { "Gi", 1073741824 },
+ { NULL, 0 }
+ };
+
+ size_t multiplier = 0;
+ for (size_t i = 0; suffixes[i].name != NULL; ++i) {
+ if (strcmp(value, suffixes[i].name) == 0) {
+ multiplier = suffixes[i].multiplier;
+ break;
+ }
+ }
+
+ if (multiplier == 0) {
+ fprintf(stderr, "%s: %s: Invalid suffix",
+ argv0, value);
+ exit(ERROR);
+ }
+
+ // Don't overflow here either.
+ if (result > SIZE_MAX / multiplier)
+ return SIZE_MAX;
+
+ result *= multiplier;
+ }
+
+ return result;
+}
+
+
+/// Parses command line options.
+static void
+parse_options(int argc, char **argv)
+{
+ static const char short_opts[] = "cdkfM:hV";
+ static const struct option long_opts[] = {
+ { "stdout", no_argument, NULL, 'c' },
+ { "to-stdout", no_argument, NULL, 'c' },
+ { "decompress", no_argument, NULL, 'd' },
+ { "uncompress", no_argument, NULL, 'd' },
+ { "force", no_argument, NULL, 'f' },
+ { "keep", no_argument, NULL, 'k' },
+ { "memory", required_argument, NULL, 'M' },
+ { "format", required_argument, NULL, OPTION_FORMAT },
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c;
+
+ while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL))
+ != -1) {
+ switch (c) {
+ case 'c':
+ case 'd':
+ case 'k':
+ break;
+
+ case 'f':
+ force = true;
+ break;
+
+ case 'M':
+ mem_limit = str_to_size(optarg);
+ break;
+
+ case 'h':
+ help();
+
+ case 'V':
+ version();
+
+ case OPTION_FORMAT: {
+ if (strcmp("auto", optarg) == 0) {
+ format_type = FORMAT_AUTO;
+ } else if (strcmp("native", optarg) == 0
+ || strcmp("single", optarg) == 0
+ || strcmp("multi", optarg) == 0) {
+ format_type = FORMAT_NATIVE;
+ } else if (strcmp("alone", optarg) == 0) {
+ format_type = FORMAT_ALONE;
+ } else {
+ fprintf(stderr, "%s: %s: Unknown file format "
+ "name\n", argv0, optarg);
+ exit(ERROR);
+ }
+ break;
+ }
+
+ default:
+ exit(ERROR);
+ }
+ }
+
+ return;
+}
+
+
+/// Initializes lzma_stream structure for decoding of a new Stream.
+static void
+init(void)
+{
+ lzma_ret ret;
+
+ switch (format_type) {
+ case FORMAT_AUTO:
+ ret = lzma_auto_decoder(&strm, NULL, NULL);
+ break;
+
+ case FORMAT_NATIVE:
+ ret = lzma_stream_decoder(&strm, NULL, NULL);
+ break;
+
+ case FORMAT_ALONE:
+ ret = lzma_alone_decoder(&strm);
+ break;
+
+ default:
+ assert(0);
+ ret = LZMA_PROG_ERROR;
+ }
+
+ if (ret != LZMA_OK) {
+ fprintf(stderr, "%s: ", argv0);
+
+ if (ret == LZMA_MEM_ERROR)
+ fprintf(stderr, "%s\n", strerror(ENOMEM));
+ else
+ fprintf(stderr, "Internal program error (bug)\n");
+
+ exit(ERROR);
+ }
+
+ return;
+}
+
+
+static void
+read_input(void)
+{
+ strm.next_in = in_buf;
+ strm.avail_in = fread(in_buf, 1, BUFSIZ, file);
+
+ if (ferror(file)) {
+ // POSIX says that fread() sets errno if an error occurred.
+ // ferror() doesn't touch errno.
+ fprintf(stderr, "%s: %s: Error reading input file: %s\n",
+ argv0, filename, strerror(errno));
+ exit(ERROR);
+ }
+
+ return;
+}
+
+
+static bool
+skip_padding(void)
+{
+ // Handle concatenated Streams. There can be arbitrary number of
+ // nul-byte padding between the Streams, which must be ignored.
+ //
+ // NOTE: Concatenating LZMA_Alone files works only if at least
+ // one of lc, lp, and pb is non-zero. Using the concatenation
+ // on LZMA_Alone files is strongly discouraged.
+ while (true) {
+ while (strm.avail_in > 0) {
+ if (*strm.next_in != '\0')
+ return true;
+
+ ++strm.next_in;
+ --strm.avail_in;
+ }
+
+ if (feof(file))
+ return false;
+
+ read_input();
+ }
+}
+
+
+static void
+uncompress(void)
+{
+ if (file == stdin && !force && isatty(STDIN_FILENO)) {
+ fprintf(stderr, "%s: Compressed data not read from "
+ "a terminal.\n%s: Use `-f' to force reading "
+ "from a terminal, or `-h' for help.\n",
+ argv0, argv0);
+ exit(ERROR);
+ }
+
+ init();
+ strm.avail_in = 0;
+
+ while (true) {
+ if (strm.avail_in == 0)
+ read_input();
+
+ strm.next_out = out_buf;
+ strm.avail_out = BUFSIZ;
+
+ const lzma_ret ret = lzma_code(&strm, LZMA_RUN);
+
+ // Write and check write error before checking decoder error.
+ // This way as much data as possible gets written to output
+ // even if decoder detected an error. Checking write error
+ // needs to be done before checking decoder error due to
+ // how concatenated Streams are handled a few lines later.
+ const size_t write_size = BUFSIZ - strm.avail_out;
+ if (fwrite(out_buf, 1, write_size, stdout) != write_size) {
+ // Wouldn't be a surprise if writing to stderr would
+ // fail too but at least try to show an error message.
+ fprintf(stderr, "%s: Cannot write to "
+ "standard output: %s\n", argv0,
+ strerror(errno));
+ exit(ERROR);
+ }
+
+ if (ret != LZMA_OK) {
+ if (ret == LZMA_STREAM_END) {
+ if (skip_padding()) {
+ init();
+ continue;
+ }
+
+ return;
+ }
+
+ fprintf(stderr, "%s: %s: ", argv0, filename);
+
+ switch (ret) {
+ case LZMA_DATA_ERROR:
+ fprintf(stderr, "File is corrupt\n");
+ exit(ERROR);
+
+ case LZMA_HEADER_ERROR:
+ fprintf(stderr, "Unsupported file "
+ "format or filters\n");
+ exit(ERROR);
+
+ case LZMA_MEM_ERROR:
+ fprintf(stderr, "%s\n", strerror(ENOMEM));
+ exit(ERROR);
+
+ case LZMA_BUF_ERROR:
+ fprintf(stderr, "Unexpected end of input\n");
+ exit(ERROR);
+
+ case LZMA_UNSUPPORTED_CHECK:
+ fprintf(stderr, "Unsupported type of "
+ "integrity check; not "
+ "verifying file integrity\n");
+ exit_status = WARNING;
+ break;
+
+ case LZMA_PROG_ERROR:
+ default:
+ fprintf(stderr, "Internal program "
+ "error (bug)\n");
+ exit(ERROR);
+ }
+ }
+ }
+}
+
+
+int
+main(int argc, char **argv)
+{
+ argv0 = argv[0];
+
+ set_default_mem_limit();
+
+ parse_options(argc, argv);
+
+ lzma_init_decoder();
+
+ lzma_memlimit *mem_limitter = lzma_memlimit_create(mem_limit);
+ if (mem_limitter == NULL) {
+ fprintf(stderr, "%s: %s\n", argv0, strerror(ENOMEM));
+ exit(ERROR);
+ }
+
+ allocator.opaque = mem_limitter;
+ strm.allocator = &allocator;
+
+ if (optind == argc) {
+ file = stdin;
+ filename = "(stdin)";
+ uncompress();
+ } else {
+ do {
+ if (strcmp(argv[optind], "-") == 0) {
+ file = stdin;
+ filename = "(stdin)";
+ uncompress();
+ } else {
+ filename = argv[optind];
+ file = fopen(filename, "rb");
+ if (file == NULL) {
+ fprintf(stderr, "%s: %s: %s\n",
+ argv0, filename,
+ strerror(errno));
+ exit(ERROR);
+ }
+
+ uncompress();
+ fclose(file);
+ }
+ } while (++optind < argc);
+ }
+
+ return exit_status;
+}
diff --git a/src/scripts/Makefile.am b/src/scripts/Makefile.am
new file mode 100644
index 0000000..be696f3
--- /dev/null
+++ b/src/scripts/Makefile.am
@@ -0,0 +1,24 @@
+dist_bin_SCRIPTS = lzdiff lzgrep lzmore
+dist_man_MANS = lzdiff.1 lzgrep.1 lzmore.1
+
+install-exec-hook:
+ cd $(DESTDIR)$(bindir) && \
+ rm -f lzcmp lzegrep lzfgrep lzless && \
+ $(LN_S) lzdiff lzcmp && \
+ $(LN_S) lzgrep lzegrep && \
+ $(LN_S) lzgrep lzfgrep && \
+ $(LN_S) lzmore lzless
+
+install-data-hook:
+ cd $(DESTDIR)$(mandir)/man1 && \
+ rm -f lzcmp.1 lzegrep.1 lzfgrep.1 lzless.1 && \
+ $(LN_S) lzdiff.1 lzcmp.1 && \
+ $(LN_S) lzgrep.1 lzegrep.1 && \
+ $(LN_S) lzgrep.1 lzfgrep.1 && \
+ $(LN_S) lzmore.1 lzless.1
+
+uninstall-hook:
+ cd $(DESTDIR)$(bindir) && \
+ rm -f lzcmp lzegrep lzfgrep lzless
+ cd $(DESTDIR)$(mandir)/man1 && \
+ rm -f lzcmp.1 lzegrep.1 lzfgrep.1 lzless.1
diff --git a/src/scripts/lzdiff b/src/scripts/lzdiff
new file mode 100755
index 0000000..c867cbe
--- /dev/null
+++ b/src/scripts/lzdiff
@@ -0,0 +1,67 @@
+#!/bin/sh
+# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh
+
+# lzcmp and lzdiff are used to invoke the cmp or the diff pro-
+# gram on compressed files. All options specified are passed
+# directly to cmp or diff. If only 1 file is specified, then
+# the files compared are file1 and an uncompressed file1.lzma.
+# If two files are specified, then they are uncompressed and
+# fed to cmp or diff. The exit status from cmp or diff is
+# preserved.
+
+prog=`echo $0 | sed 's|.*/||'`
+case "$prog" in
+ *cmp) comp=${CMP-cmp} ;;
+ *) comp=${DIFF-diff} ;;
+esac
+
+OPTIONS=
+FILES=
+for ARG
+do
+ case "$ARG" in
+ -*) OPTIONS="$OPTIONS $ARG";;
+ *) if test -f "$ARG"; then
+ FILES="$FILES $ARG"
+ else
+ echo "${prog}: $ARG not found or not a regular file"
+ exit 2
+ fi ;;
+ esac
+done
+if test -z "$FILES"; then
+ echo "Usage: $prog [${comp}_options] file [file]"
+ exit 2
+fi
+set $FILES
+if test $# -eq 1; then
+ FILE=`echo "$1" | sed 's/[-.][tlaz]*$//'`
+ lzma -dc "$1" | $comp $OPTIONS - "$FILE"
+
+elif test $# -eq 2; then
+ case "$1" in
+ *[-.]lzma | *.t[la]z)
+ case "$2" in
+ *[-.]lzma | *.t[la]z)
+ F=`echo "$2" | sed 's|.*/||;s|[-.][tlaz]*||'`
+ TF=`/usr/bin/mktemp ${TMPDIR:-/tmp}/"$F".XXXXXXXXXX` || exit 1
+ trap 'rm -f "$TF"; exit 2' EXIT HUP INT PIPE TERM
+ lzma -dc "$2" > "$TF" || exit
+ lzma -dc "$1" | $comp $OPTIONS - "$TF"
+ STAT="$?"
+ rm -f "$TF" || STAT=2
+ trap EXIT HUP INT PIPE TERM
+ exit $STAT;;
+
+ *) lzma -dc "$1" | $comp $OPTIONS - "$2";;
+ esac;;
+ *) case "$2" in
+ *[-.]lzma | *.t[la]z)
+ lzma -dc "$2" | $comp $OPTIONS "$1" -;;
+ *) $comp $OPTIONS "$1" "$2";;
+ esac;;
+ esac
+else
+ echo "Usage: $prog [${comp}_options] file [file]"
+ exit 2
+fi
diff --git a/src/scripts/lzdiff.1 b/src/scripts/lzdiff.1
new file mode 100644
index 0000000..7d15f8b
--- /dev/null
+++ b/src/scripts/lzdiff.1
@@ -0,0 +1,51 @@
+.TH LZDIFF 1 "24 Jun 2005" "LZMA utils"
+.SH NAME
+lzcmp, lzdiff \- compare LZMA compressed files
+.SH SYNOPSIS
+.B lzcmp
+.RI [ cmp_options "] " file1 " [" file2 ]
+.br
+.B zdiff
+.RI [ diff_options "] " file1 " [" file2 ]
+.SH DESCRIPTION
+.B lzcmp
+and
+.B zdiff
+are used to invoke the
+.BR cmp (1)
+or the
+.BR diff (1)
+program on compressed files. All options specified are passed directly to
+.B cmp
+or
+.BR diff "."
+If only 1 file is specified, then the files compared are
+.I file1
+and an uncompressed
+.IB file1 ".gz\fR."
+If two files are specified, then they are uncompressed if necessary and fed to
+.B cmp
+or
+.BR diff "."
+The exit status from
+.B cmp
+or
+.B diff
+is preserved.
+.SH AUTHORS
+This manual page was ripped from
+.BR zdiff (1)
+shipped in gzip package.
+.SH "SEE ALSO"
+.BR cmp (1),
+.BR diff (1),
+.BR lzmore(1),
+.BR lzgrep(1),
+.BR lzma (1),
+.BR lzmash (1)
+.SH BUGS
+Messages from the
+.B cmp
+or
+.B diff
+programs refer to temporary filenames instead of those specified.
diff --git a/src/scripts/lzgrep b/src/scripts/lzgrep
new file mode 100755
index 0000000..c872df4
--- /dev/null
+++ b/src/scripts/lzgrep
@@ -0,0 +1,123 @@
+#!/bin/sh
+
+# lzgrep -- a wrapper around a grep program that decompresses files as needed
+# Adapted to LZMA utils from gzip-1.3.3 + Red Hat's security patches
+# Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>
+# Copyright (C) 1998, 2001 Free Software Foundation
+# Copyright (C) 1993 Jean-loup Gailly
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# Improve error handling, this is supported by bash but not all the other
+# shells so we hide the possible error:
+set -o pipefail > /dev/null 2> /dev/null
+
+prog=`echo "$0" | sed 's|.*/||'`
+case "$prog" in
+ *egrep) grep=${EGREP-egrep} ;;
+ *fgrep) grep=${FGREP-fgrep} ;;
+ *) grep=${GREP-grep} ;;
+esac
+
+pat=""
+after_dash_dash=""
+files_with_matches=0
+files_without_matches=0
+no_filename=0
+with_filename=0
+
+while test $# -ne 0; do
+ case "$after_dash_dash$1" in
+ --d* | --rec*) echo >&2 "$0: $1: option not supported"; exit 1;;
+ --files-with-*) files_with_matches=1;;
+ --files-witho*) files_without_matches=1;;
+ --no-f*) no_filename=1;;
+ --wi*) with_filename=1;;
+ --*) ;;
+ -*)
+ case "$1" in
+ -*[dr]*) echo >&2 "$0: $1: option not supported"; exit 1;;
+ esac
+ case "$1" in
+ -*H*) with_filename=1;;
+ esac
+ case "$1" in
+ -*h*) no_filename=1;;
+ esac
+ case "$1" in
+ -*L*) files_without_matches=1;;
+ esac
+ case "$1" in
+ -*l*) files_with_matches=1;;
+ esac;;
+ esac
+ case "$after_dash_dash$1" in
+ -[ef]) opt="$opt $1"; shift; pat="$1"
+ if test "$grep" = grep; then # grep is buggy with -e on SVR4
+ grep=egrep
+ fi;;
+ -[ABCdm])opt="$opt $1 $2"; shift;;
+ --) opt="$opt $1"; after_dash_dash=1;;
+ -*) opt="$opt $1";;
+ *) if test -z "$pat"; then
+ pat="$1"
+ else
+ break;
+ fi;;
+ esac
+ shift
+done
+
+if test -z "$pat"; then
+ echo "grep through lzma files"
+ echo "usage: $prog [grep_options] pattern [files]"
+ exit 1
+fi
+
+if test $# -eq 0; then
+ lzma -dc | $grep $opt "$pat"
+ exit $?
+fi
+
+res=0
+trap break SIGPIPE
+for i do
+ lzma -dc "$i" |
+ if test $files_with_matches -eq 1; then
+ $grep $opt "$pat" > /dev/null && printf "%s\n" "$i"
+ elif test $files_without_matches -eq 1; then
+ $grep $opt "$pat" > /dev/null || printf "%s\n" "$i"
+ elif test $with_filename -eq 0 && { test $# -eq 1 || test $no_filename -eq 1; }; then
+ $grep $opt "$pat"
+ else
+ i=${i//\\/\\\\}
+ i=${i//|/\\|}
+ i=${i//&/\\&}
+ i=`printf "%s" "$i" | tr '\n' ' '`
+ if test $with_filename -eq 1; then
+ sed_script="s|^[^:]*:|${i}:|"
+ else
+ sed_script="s|^|${i}:|"
+ fi
+ $grep $opt "$pat" | sed "$sed_script"
+ fi
+ r=$?
+ test $res -lt $r && res=$r
+ # SIGPIPE + 128
+ test "$r" -eq 141 && exit $res
+done
+trap - SIGPIPE
+exit $res
diff --git a/src/scripts/lzgrep.1 b/src/scripts/lzgrep.1
new file mode 100644
index 0000000..65e344d
--- /dev/null
+++ b/src/scripts/lzgrep.1
@@ -0,0 +1,61 @@
+.TH LZGREP 1 "24 Jun 2005" "LZMA utils"
+.SH NAME
+lzgrep \- search LZMA compressed files for a regular expression
+.SH SYNOPSIS
+.B lzgrep
+.RI [ grep_options ]
+.RB [ \-e ]
+.I pattern
+.IR filename ".\|.\|."
+.br
+.B lzegrep
+.RB ...
+.br
+.B lzfgrep
+.RB ...
+.SH DESCRIPTION
+.B lzgrep
+is used to invoke the
+.BR grep (1)
+on LZMA compressed files. All options specified are passed directly to
+.BR grep .
+If no file is specified, then the standard input is decompressed
+if necessary and fed to grep.
+Otherwise the given files are uncompressed if necessary and fed to
+.BR grep .
+.PP
+If
+.B lzgrep
+is invoked as
+.B lzegrep
+or
+.B lzfgrep
+then
+.B egrep
+or
+.B fgrep
+is used instead of
+.B grep.
+If the GREP environment variable is set,
+.B lzgrep
+uses it as the
+.B grep
+program to be invoked. For example:
+
+ for sh: GREP=fgrep lzgrep string files
+ for csh: (setenv GREP fgrep; lzgrep string files)
+.SH AUTHORS
+Original
+.BR zgrep (1)
+manual page by Charles Levert <charles@comm.polymtl.ca>.
+.PP
+Minor modifications for LZMA utils by Lasse Collin
+<lasse.collin@tukaani.org>.
+.SH "SEE ALSO"
+.BR grep (1),
+.BR egrep (1),
+.BR fgrep (1),
+.BR lzdiff (1),
+.BR lzmore (1),
+.BR lzma (1),
+.BR lzmash (1)
diff --git a/src/scripts/lzmore b/src/scripts/lzmore
new file mode 100755
index 0000000..d694774
--- /dev/null
+++ b/src/scripts/lzmore
@@ -0,0 +1,74 @@
+#!/bin/sh
+
+# Copyright (C) 2001 Free Software Foundation
+# Copyright (C) 1992, 1993 Jean-loup Gailly
+# Adapted to LZMA utils from gzip-1.3.3 + Red Hat's security patches
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+if test "`echo "$0" | sed 's|.*/||'`" = "lzless"; then
+ PAGER=less
+fi
+
+if test "`echo -n a`" = "-n a"; then
+ # looks like a SysV system:
+ n1=''; n2='\c'
+else
+ n1='-n'; n2=''
+fi
+oldtty=`stty -g 2>/dev/null`
+if stty -cbreak 2>/dev/null; then
+ cb='cbreak'; ncb='-cbreak'
+else
+ # 'stty min 1' resets eof to ^a on both SunOS and SysV!
+ cb='min 1 -icanon'; ncb='icanon eof ^d'
+fi
+if test $? -eq 0 -a -n "$oldtty"; then
+ trap 'stty $oldtty 2>/dev/null; exit' 0 2 3 5 10 13 15
+else
+ trap 'stty $ncb echo 2>/dev/null; exit' 0 2 3 5 10 13 15
+fi
+
+if test $# = 0; then
+ if test -t 0; then
+ echo usage: zmore files...
+ else
+ lzma -dc | eval ${PAGER-more}
+ fi
+else
+ FIRST=1
+ for FILE
+ do
+ < "$FILE" || continue
+ if test $FIRST -eq 0; then
+ echo $n1 "--More--(Next file: $FILE)$n2"
+ stty $cb -echo 2>/dev/null
+ ANS=`dd bs=1 count=1 2>/dev/null`
+ stty $ncb echo 2>/dev/null
+ echo " "
+ if test "$ANS" = 'e' -o "$ANS" = 'q'; then
+ exit
+ fi
+ fi
+ if test "$ANS" != 's'; then
+ echo "------> $FILE <------"
+ lzma -dc "$FILE" | eval ${PAGER-more}
+ fi
+ if test -t; then
+ FIRST=0
+ fi
+ done
+fi
diff --git a/src/scripts/lzmore.1 b/src/scripts/lzmore.1
new file mode 100644
index 0000000..7720726
--- /dev/null
+++ b/src/scripts/lzmore.1
@@ -0,0 +1,55 @@
+.TH LZMORE 1 "30 Jun 2005" "LZMA utils"
+.SH NAME
+lzmore, lzless \- view LZMA compressed (text) files
+.SH SYNOPSIS
+.B lzmore
+.RI [ "filename ..." ]
+.br
+.B lzless
+.RI [ "filename ..." ]
+.SH DESCRIPTION
+.B lzmore
+is a filter which allows examination of LZMA compressed text files
+one screenful at a time on a soft-copy terminal.
+.PP
+To use a pager other than the default
+.B more,
+set environment variable
+.B PAGER
+to the name of the desired program, such as
+.BR less .
+If
+.B lzmore
+is called as
+.B lzless
+then
+.B less
+is used as the
+.BR PAGER .
+.TP
+.BR e " or " q
+When the prompt --More--(Next file:
+.IR file )
+is printed, this command causes lzmore to exit.
+.TP
+.B s
+When the prompt --More--(Next file:
+.IR file )
+is printed, this command causes zmore to skip the next file and continue.
+.PP
+For list of keyboard commands supported while actually viewing the
+content of a file, refer to manual of the pager you use, usually
+.BR more (1)
+or
+.BR less (1).
+.SH AUTHORS
+This manual page was ripped from
+.BR zmore (1)
+shipped in gzip package.
+.SH "SEE ALSO"
+.BR more (1),
+.BR zmore (1),
+.BR lzdiff (1),
+.BR lzgrep (1),
+.BR lzma (1),
+.BR lzmash (1)
diff --git a/tests/Makefile.am b/tests/Makefile.am
new file mode 100644
index 0000000..3039239
--- /dev/null
+++ b/tests/Makefile.am
@@ -0,0 +1,43 @@
+##
+## Copyright (C) 2007 Lasse Collin
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+
+EXTRA_DIST = files tests.h
+
+AM_CPPFLAGS = \
+ -I@top_srcdir@/src/common \
+ -I@top_srcdir@/src/liblzma/api \
+ -I@top_builddir@/lib
+
+LDADD = @top_builddir@/src/liblzma/liblzma.la
+
+if COND_GNULIB
+LDADD += @top_builddir/lib/libgnu.a
+endif
+
+check_PROGRAMS = \
+ test_check \
+ test_stream_flags \
+ test_filter_flags \
+ test_block_header \
+ test_index \
+ test_info
+
+test_check_SOURCES = test_check.c
+test_stream_flags_SOURCES = test_stream_flags.c
+test_filter_flags_SOURCES = test_filter_flags.c
+test_block_header_SOURCES = test_block_header.c
+test_index_SOURCES = test_index.c
+test_info_SOURCES = test_info.c
+
+TESTS = $(check_PROGRAMS)
diff --git a/tests/test_block.c b/tests/test_block.c
new file mode 100644
index 0000000..89063b9
--- /dev/null
+++ b/tests/test_block.c
@@ -0,0 +1,59 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file test_block.c
+/// \brief Tests Block coders
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+static uint8_t text[] = "Hello world!";
+static uint8_t buffer[4096];
+static lzma_options_block block_options;
+static lzma_stream strm = LZMA_STREAM_INIT;
+
+
+static void
+test1(void)
+{
+
+}
+
+
+int
+main()
+{
+ lzma_init();
+
+ block_options = (lzma_options_block){
+ .check_type = LZMA_CHECK_NONE,
+ .has_eopm = true,
+ .has_uncompressed_size_in_footer = false,
+ .has_backward_size = false,
+ .handle_padding = false,
+ .total_size = LZMA_VLI_VALUE_UNKNOWN,
+ .compressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .header_size = 5,
+ };
+ block_options.filters[0].id = LZMA_VLI_VALUE_UNKNOWN;
+ block_options.filters[0].options = NULL;
+
+
+ lzma_end(&strm);
+
+ return 0;
+}
diff --git a/tests/test_block_header.c b/tests/test_block_header.c
new file mode 100644
index 0000000..c6767e3
--- /dev/null
+++ b/tests/test_block_header.c
@@ -0,0 +1,352 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file test_block_header.c
+/// \brief Tests Block Header coders
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+static uint8_t buffer[4096];
+static lzma_stream strm = LZMA_STREAM_INIT;
+static lzma_options_block known_options;
+static lzma_options_block decoded_options;
+
+// We want to test zero, one, and two filters in the chain.
+
+static const lzma_options_filter filters_none[1] = {
+ {
+ .id = LZMA_VLI_VALUE_UNKNOWN,
+ .options = NULL,
+ },
+};
+
+static const lzma_options_filter filters_powerpc[2] = {
+ {
+ .id = LZMA_FILTER_POWERPC,
+ .options = NULL,
+ }, {
+ .id = LZMA_VLI_VALUE_UNKNOWN,
+ .options = NULL,
+ },
+};
+
+static const lzma_options_delta options_delta = {
+ .distance = 4,
+};
+
+static const lzma_options_filter filters_delta[3] = {
+ {
+ .id = LZMA_FILTER_DELTA,
+ .options = (void *)(&options_delta),
+ }, {
+ .id = LZMA_FILTER_COPY,
+ .options = NULL,
+ }, {
+ .id = LZMA_VLI_VALUE_UNKNOWN,
+ .options = NULL,
+ },
+};
+
+
+static bool
+encode(uint32_t header_size)
+{
+ memcrap(buffer, sizeof(buffer));
+
+ if (lzma_block_header_size(&known_options) != LZMA_OK)
+ return true;
+
+ if (known_options.header_size != header_size)
+ return true;
+
+ if (lzma_block_header_encode(buffer, &known_options) != LZMA_OK)
+ return true;
+
+ return false;
+}
+
+
+static bool
+decode_ret(uint32_t header_size, lzma_ret ret_ok)
+{
+ memcrap(&decoded_options, sizeof(decoded_options));
+ decoded_options.has_crc32 = known_options.has_crc32;
+
+ expect(lzma_block_header_decoder(&strm, &decoded_options) == LZMA_OK);
+
+ return decoder_loop_ret(&strm, buffer, header_size, ret_ok);
+}
+
+
+static bool
+decode(uint32_t header_size)
+{
+ memcrap(&decoded_options, sizeof(decoded_options));
+ decoded_options.has_crc32 = known_options.has_crc32;
+
+ expect(lzma_block_header_decoder(&strm, &decoded_options) == LZMA_OK);
+
+ if (decoder_loop(&strm, buffer, header_size))
+ return true;
+
+ if (known_options.has_eopm != decoded_options.has_eopm)
+ return true;
+
+ if (known_options.is_metadata != decoded_options.is_metadata)
+ return true;
+
+ if (known_options.compressed_size == LZMA_VLI_VALUE_UNKNOWN
+ && known_options.compressed_reserve != 0) {
+ if (decoded_options.compressed_size != 0)
+ return true;
+ } else if (known_options.compressed_size
+ != decoded_options.compressed_size) {
+ return true;
+ }
+
+ if (known_options.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN
+ && known_options.uncompressed_reserve != 0) {
+ if (decoded_options.uncompressed_size != 0)
+ return true;
+ } else if (known_options.uncompressed_size
+ != decoded_options.uncompressed_size) {
+ return true;
+ }
+
+ if (known_options.compressed_reserve != 0
+ && known_options.compressed_reserve
+ != decoded_options.compressed_reserve)
+ return true;
+
+ if (known_options.uncompressed_reserve != 0
+ && known_options.uncompressed_reserve
+ != decoded_options.uncompressed_reserve)
+ return true;
+
+ if (known_options.padding != decoded_options.padding)
+ return true;
+
+ return false;
+}
+
+
+static bool
+code(uint32_t header_size)
+{
+ return encode(header_size) || decode(header_size);
+}
+
+
+static bool
+helper_loop(uint32_t unpadded_size, uint32_t multiple)
+{
+ for (int i = 0; i <= LZMA_BLOCK_HEADER_PADDING_MAX; ++i) {
+ known_options.padding = i;
+ if (code(unpadded_size + i))
+ return true;
+ }
+
+ for (int i = 0 - LZMA_BLOCK_HEADER_PADDING_MAX - 1;
+ i <= LZMA_BLOCK_HEADER_PADDING_MAX + 1; ++i) {
+ known_options.alignment = i;
+
+ uint32_t size = unpadded_size;
+ while ((size + known_options.alignment) % multiple)
+ ++size;
+
+ known_options.padding = LZMA_BLOCK_HEADER_PADDING_AUTO;
+ if (code(size))
+ return true;
+
+ } while (++known_options.alignment
+ <= LZMA_BLOCK_HEADER_PADDING_MAX + 1);
+
+ return false;
+}
+
+
+static bool
+helper(uint32_t unpadded_size, uint32_t multiple)
+{
+ known_options.has_crc32 = false;
+ known_options.is_metadata = false;
+ if (helper_loop(unpadded_size, multiple))
+ return true;
+
+ known_options.has_crc32 = false;
+ known_options.is_metadata = true;
+ if (helper_loop(unpadded_size, multiple))
+ return true;
+
+ known_options.has_crc32 = true;
+ known_options.is_metadata = false;
+ if (helper_loop(unpadded_size + 4, multiple))
+ return true;
+
+ known_options.has_crc32 = true;
+ known_options.is_metadata = true;
+ if (helper_loop(unpadded_size + 4, multiple))
+ return true;
+
+ return false;
+}
+
+
+static void
+test1(void)
+{
+ known_options = (lzma_options_block){
+ .has_eopm = true,
+ .compressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .compressed_reserve = 0,
+ .uncompressed_reserve = 0,
+ };
+ memcpy(known_options.filters, filters_none, sizeof(filters_none));
+ expect(!helper(2, 1));
+
+ memcpy(known_options.filters, filters_powerpc,
+ sizeof(filters_powerpc));
+ expect(!helper(3, 4));
+
+ memcpy(known_options.filters, filters_delta, sizeof(filters_delta));
+ expect(!helper(5, 1));
+
+ known_options.padding = LZMA_BLOCK_HEADER_PADDING_MAX + 1;
+ expect(lzma_block_header_size(&known_options) == LZMA_PROG_ERROR);
+}
+
+
+static void
+test2_helper(uint32_t unpadded_size, uint32_t multiple)
+{
+ known_options.has_eopm = true;
+ known_options.compressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ known_options.uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ known_options.compressed_reserve = 1;
+ known_options.uncompressed_reserve = 1;
+ expect(!helper(unpadded_size + 2, multiple));
+
+ known_options.compressed_reserve = LZMA_VLI_BYTES_MAX;
+ known_options.uncompressed_reserve = LZMA_VLI_BYTES_MAX;
+ expect(!helper(unpadded_size + 18, multiple));
+
+ known_options.compressed_size = 1234;
+ known_options.uncompressed_size = 2345;
+ expect(!helper(unpadded_size + 18, multiple));
+
+ known_options.compressed_reserve = 1;
+ known_options.uncompressed_reserve = 1;
+ expect(lzma_block_header_size(&known_options) == LZMA_PROG_ERROR);
+}
+
+
+static void
+test2(void)
+{
+ memcpy(known_options.filters, filters_none, sizeof(filters_none));
+ test2_helper(2, 1);
+
+ memcpy(known_options.filters, filters_powerpc,
+ sizeof(filters_powerpc));
+ test2_helper(3, 4);
+
+ memcpy(known_options.filters, filters_delta,
+ sizeof(filters_delta));
+ test2_helper(5, 1);
+}
+
+
+static void
+test3(void)
+{
+ known_options = (lzma_options_block){
+ .has_crc32 = false,
+ .has_eopm = true,
+ .is_metadata = false,
+ .is_metadata = false,
+ .compressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
+ .compressed_reserve = 1,
+ .uncompressed_reserve = 1,
+ };
+ memcpy(known_options.filters, filters_none, sizeof(filters_none));
+
+ known_options.header_size = 3;
+ expect(lzma_block_header_encode(buffer, &known_options)
+ == LZMA_PROG_ERROR);
+
+ known_options.header_size = 4;
+ expect(lzma_block_header_encode(buffer, &known_options) == LZMA_OK);
+
+ known_options.header_size = 5;
+ expect(lzma_block_header_encode(buffer, &known_options)
+ == LZMA_PROG_ERROR);
+
+ // NOTE: This assumes that Filter ID 0x1F is not supported. Update
+ // this test to use some other ID if 0x1F becomes supported.
+ known_options.filters[0].id = 0x1F;
+ known_options.header_size = 5;
+ expect(lzma_block_header_encode(buffer, &known_options)
+ == LZMA_HEADER_ERROR);
+}
+
+
+static void
+test4(void)
+{
+ known_options = (lzma_options_block){
+ .has_crc32 = false,
+ .has_eopm = true,
+ .is_metadata = false,
+ .compressed_size = 0,
+ .uncompressed_size = 0,
+ .compressed_reserve = LZMA_VLI_BYTES_MAX,
+ .uncompressed_reserve = LZMA_VLI_BYTES_MAX,
+ .padding = 0,
+ };
+ memcpy(known_options.filters, filters_powerpc,
+ sizeof(filters_powerpc));
+ expect(!code(21));
+
+ // Reserved bits
+ buffer[0] ^= 0x40;
+ expect(!decode_ret(1, LZMA_HEADER_ERROR));
+ buffer[0] ^= 0x40;
+
+ buffer[1] ^= 0x40;
+ expect(decode_ret(21, LZMA_HEADER_ERROR));
+ buffer[1] ^= 0x40;
+
+
+}
+
+
+int
+main()
+{
+ lzma_init();
+
+ test1();
+ test2();
+ test3();
+ test4();
+
+ lzma_end(&strm);
+
+ return 0;
+}
diff --git a/tests/test_check.c b/tests/test_check.c
new file mode 100644
index 0000000..14df375
--- /dev/null
+++ b/tests/test_check.c
@@ -0,0 +1,90 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file test_check.c
+/// \brief Tests integrity checks
+///
+/// \todo Add SHA256
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+static const uint8_t test_string[9] = "123456789";
+static const uint8_t test_unaligned[12] = "xxx123456789";
+
+
+static bool
+test_crc32(void)
+{
+ static const uint32_t test_vector = 0xCBF43926;
+
+ // Test 1
+ uint32_t crc = lzma_crc32(test_string, sizeof(test_string), 0);
+ if (crc != test_vector)
+ return true;
+
+ // Test 2
+ crc = lzma_crc32(test_unaligned + 3, sizeof(test_string), 0);
+ if (crc != test_vector)
+ return true;
+
+ // Test 3
+ crc = 0;
+ for (size_t i = 0; i < sizeof(test_string); ++i)
+ crc = lzma_crc32(test_string + i, 1, crc);
+ if (crc != test_vector)
+ return true;
+
+ return false;
+}
+
+
+static bool
+test_crc64(void)
+{
+ static const uint64_t test_vector = 0x995DC9BBDF1939FA;
+
+ // Test 1
+ uint64_t crc = lzma_crc64(test_string, sizeof(test_string), 0);
+ if (crc != test_vector)
+ return true;
+
+ // Test 2
+ crc = lzma_crc64(test_unaligned + 3, sizeof(test_string), 0);
+ if (crc != test_vector)
+ return true;
+
+ // Test 3
+ crc = 0;
+ for (size_t i = 0; i < sizeof(test_string); ++i)
+ crc = lzma_crc64(test_string + i, 1, crc);
+ if (crc != test_vector)
+ return true;
+
+ return false;
+}
+
+
+int
+main()
+{
+ bool error = false;
+
+ error |= test_crc32();
+ error |= test_crc64();
+
+ return error ? 1 : 0;
+}
diff --git a/tests/test_filter_flags.c b/tests/test_filter_flags.c
new file mode 100644
index 0000000..0a16f21
--- /dev/null
+++ b/tests/test_filter_flags.c
@@ -0,0 +1,326 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file test_filter_flags.c
+/// \brief Tests Filter Flags coders
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+static uint8_t buffer[4096];
+static lzma_options_filter known_flags;
+static lzma_options_filter decoded_flags;
+static lzma_stream strm = LZMA_STREAM_INIT;
+
+
+static bool
+encode(uint32_t known_size)
+{
+ memcrap(buffer, sizeof(buffer));
+
+ uint32_t tmp;
+ if (lzma_filter_flags_size(&tmp, &known_flags) != LZMA_OK)
+ return true;
+
+ if (tmp != known_size)
+ return true;
+
+ size_t out_pos = 0;
+ if (lzma_filter_flags_encode(buffer, &out_pos, known_size,
+ &known_flags) != LZMA_OK)
+ return true;
+
+ if (out_pos != known_size)
+ return true;
+
+ return false;
+}
+
+
+static bool
+decode_ret(uint32_t known_size, lzma_ret ret_ok)
+{
+ memcrap(&decoded_flags, sizeof(decoded_flags));
+
+ if (lzma_filter_flags_decoder(&strm, &decoded_flags) != LZMA_OK)
+ return true;
+
+ if (decoder_loop_ret(&strm, buffer, known_size, ret_ok))
+ return true;
+
+ return false;
+}
+
+
+static bool
+decode(uint32_t known_size)
+{
+ if (decode_ret(known_size, LZMA_STREAM_END))
+ return true;
+
+ if (known_flags.id != decoded_flags.id)
+ return true;
+
+ return false;
+}
+
+
+static void
+test_copy(void)
+{
+ // Test 1 (good)
+ known_flags.id = LZMA_FILTER_COPY;
+ known_flags.options = NULL;
+
+ expect(!encode(1));
+ expect(!decode(1));
+ expect(decoded_flags.options == NULL);
+
+ // Test 2 (invalid encoder options)
+ known_flags.options = &known_flags;
+ expect(encode(99));
+
+ // Test 3 (good but unusual Filter Flags field)
+ buffer[0] = 0xE0;
+ buffer[1] = LZMA_FILTER_COPY;
+ expect(!decode(2));
+ expect(decoded_flags.options == NULL);
+
+ // Test 4 (invalid Filter Flags field)
+ buffer[0] = 0xE1;
+ buffer[1] = LZMA_FILTER_COPY;
+ buffer[2] = 0;
+ expect(!decode_ret(3, LZMA_HEADER_ERROR));
+
+ // Test 5 (good but weird Filter Flags field)
+ buffer[0] = 0xFF;
+ buffer[1] = LZMA_FILTER_COPY;
+ buffer[2] = 0;
+ expect(!decode(3));
+ expect(decoded_flags.options == NULL);
+
+ // Test 6 (invalid Filter Flags field)
+ buffer[0] = 0xFF;
+ buffer[1] = LZMA_FILTER_COPY;
+ buffer[2] = 1;
+ buffer[3] = 0;
+ expect(!decode_ret(4, LZMA_HEADER_ERROR));
+}
+
+
+static void
+test_subblock(void)
+{
+ // Test 1
+ known_flags.id = LZMA_FILTER_SUBBLOCK;
+ known_flags.options = NULL;
+
+ expect(!encode(1));
+ expect(!decode(1));
+ expect(decoded_flags.options != NULL);
+ expect(((lzma_options_subblock *)(decoded_flags.options))
+ ->allow_subfilters);
+
+ // Test 2
+ known_flags.options = decoded_flags.options;
+ expect(!encode(1));
+ expect(!decode(1));
+ expect(decoded_flags.options != NULL);
+ expect(((lzma_options_subblock *)(decoded_flags.options))
+ ->allow_subfilters);
+
+ free(decoded_flags.options);
+ free(known_flags.options);
+
+ // Test 3
+ buffer[0] = 0xFF;
+ buffer[1] = LZMA_FILTER_SUBBLOCK;
+ buffer[2] = 1;
+ buffer[3] = 0;
+ expect(!decode_ret(4, LZMA_HEADER_ERROR));
+}
+
+
+static void
+test_simple(void)
+{
+ // Test 1
+ known_flags.id = LZMA_FILTER_X86;
+ known_flags.options = NULL;
+
+ expect(!encode(1));
+ expect(!decode(1));
+ expect(decoded_flags.options == NULL);
+
+ // Test 2
+ lzma_options_simple options;
+ options.start_offset = 0;
+ known_flags.options = &options;
+ expect(!encode(1));
+ expect(!decode(1));
+ expect(decoded_flags.options == NULL);
+
+ // Test 3
+ options.start_offset = 123456;
+ known_flags.options = &options;
+ expect(!encode(6));
+ expect(!decode(6));
+ expect(decoded_flags.options != NULL);
+
+ lzma_options_simple *decoded = decoded_flags.options;
+ expect(decoded->start_offset == options.start_offset);
+
+ free(decoded);
+}
+
+
+static void
+test_delta(void)
+{
+ // Test 1
+ known_flags.id = LZMA_FILTER_DELTA;
+ known_flags.options = NULL;
+ expect(encode(99));
+
+ // Test 2
+ lzma_options_delta options = { 0 };
+ known_flags.options = &options;
+ expect(encode(99));
+
+ // Test 3
+ options.distance = LZMA_DELTA_DISTANCE_MIN;
+ expect(!encode(2));
+ expect(!decode(2));
+ expect(((lzma_options_delta *)(decoded_flags.options))
+ ->distance == options.distance);
+
+ free(decoded_flags.options);
+
+ // Test 4
+ options.distance = LZMA_DELTA_DISTANCE_MAX;
+ expect(!encode(2));
+ expect(!decode(2));
+ expect(((lzma_options_delta *)(decoded_flags.options))
+ ->distance == options.distance);
+
+ free(decoded_flags.options);
+
+ // Test 5
+ options.distance = LZMA_DELTA_DISTANCE_MAX + 1;
+ expect(encode(99));
+}
+
+
+static void
+validate_lzma(void)
+{
+ const lzma_options_lzma *known = known_flags.options;
+ const lzma_options_lzma *decoded = decoded_flags.options;
+
+ expect(known->dictionary_size <= decoded->dictionary_size);
+
+ if (known->dictionary_size == 1)
+ expect(decoded->dictionary_size == 1);
+ else
+ expect(known->dictionary_size + known->dictionary_size / 2
+ > decoded->dictionary_size);
+
+ expect(known->literal_context_bits == decoded->literal_context_bits);
+ expect(known->literal_pos_bits == decoded->literal_pos_bits);
+ expect(known->pos_bits == decoded->pos_bits);
+}
+
+
+static void
+test_lzma(void)
+{
+ // Test 1
+ known_flags.id = LZMA_FILTER_LZMA;
+ known_flags.options = NULL;
+ expect(encode(99));
+
+ // Test 2
+ lzma_options_lzma options = {
+ .dictionary_size = 0,
+ .literal_context_bits = 0,
+ .literal_pos_bits = 0,
+ .pos_bits = 0,
+ .preset_dictionary = NULL,
+ .preset_dictionary_size = 0,
+ .mode = LZMA_MODE_INVALID,
+ .fast_bytes = 0,
+ .match_finder = LZMA_MF_INVALID,
+ .match_finder_cycles = 0,
+ };
+
+ // Test 3 (empty dictionary not allowed)
+ known_flags.options = &options;
+ expect(encode(99));
+
+ // Test 4 (brute-force test some valid dictionary sizes)
+ while (options.dictionary_size != LZMA_DICTIONARY_SIZE_MAX) {
+ if (++options.dictionary_size == 5000)
+ options.dictionary_size = LZMA_DICTIONARY_SIZE_MAX - 5;
+
+ expect(!encode(3));
+ expect(!decode(3));
+ validate_lzma();
+
+ free(decoded_flags.options);
+ }
+
+ // Test 5 (too big dictionary size)
+ options.dictionary_size = LZMA_DICTIONARY_SIZE_MAX + 1;
+ expect(encode(99));
+
+ // Test 6 (brute-force test lc/lp/pb)
+ options.dictionary_size = 1;
+ for (uint32_t lc = LZMA_LITERAL_CONTEXT_BITS_MIN;
+ lc <= LZMA_LITERAL_CONTEXT_BITS_MAX; ++lc) {
+ for (uint32_t lp = LZMA_LITERAL_POS_BITS_MIN;
+ lp <= LZMA_LITERAL_POS_BITS_MAX; ++lp) {
+ for (uint32_t pb = LZMA_POS_BITS_MIN;
+ pb <= LZMA_POS_BITS_MAX; ++pb) {
+ options.literal_context_bits = lc;
+ options.literal_pos_bits = lp;
+ options.pos_bits = pb;
+
+ expect(!encode(3));
+ expect(!decode(3));
+ validate_lzma();
+
+ free(decoded_flags.options);
+ }
+ }
+ }
+}
+
+
+int
+main()
+{
+ lzma_init();
+
+ test_copy();
+ test_subblock();
+ test_simple();
+ test_delta();
+ test_lzma();
+
+ lzma_end(&strm);
+
+ return 0;
+}
diff --git a/tests/test_index.c b/tests/test_index.c
new file mode 100644
index 0000000..399963d
--- /dev/null
+++ b/tests/test_index.c
@@ -0,0 +1,43 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file test_inndex.c
+/// \brief Tests functions handling the lzma_index structure
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+int
+main()
+{
+ lzma_index index[3] = {
+ { 22, 33, index + 1 },
+ { 44, 55, index + 2 },
+ { 66, 77, NULL },
+ };
+
+ lzma_index *i = lzma_index_dup(index, NULL);
+ expect(i != NULL);
+
+ expect(lzma_index_is_equal(index, i));
+
+ i->next->next->uncompressed_size = 99;
+ expect(!lzma_index_is_equal(index, i));
+
+ lzma_index_free(i, NULL);
+
+ return 0;
+}
diff --git a/tests/test_info.c b/tests/test_info.c
new file mode 100644
index 0000000..e7899ef
--- /dev/null
+++ b/tests/test_info.c
@@ -0,0 +1,717 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file test_info.c
+/// \brief Tests functions handling the lzma_info structure
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+static lzma_info *info = NULL;
+static lzma_info_iter iter;
+
+static lzma_vli stream_start = 0;
+static lzma_vli header_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+static lzma_vli total_size = LZMA_VLI_VALUE_UNKNOWN;
+static lzma_vli uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+static lzma_vli footer_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+
+static lzma_index my_index[3] = {
+ { 22, 33, my_index + 1 },
+ { 44, 55, my_index + 2 },
+ { 66, 77, NULL },
+};
+
+static lzma_metadata my_metadata = {
+ .header_metadata_size = 11,
+ .total_size = 22 + 44 + 66,
+ .uncompressed_size = 33 + 55 + 77,
+ .index = my_index,
+ .extra = NULL,
+};
+
+
+static void
+reset(void)
+{
+ expect(lzma_info_init(info, NULL) == info);
+ stream_start = 0;
+ header_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+ total_size = LZMA_VLI_VALUE_UNKNOWN;
+ uncompressed_size = LZMA_VLI_VALUE_UNKNOWN;
+ footer_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+}
+
+
+static void
+validate(void)
+{
+ expect(lzma_info_size_get(info, LZMA_INFO_STREAM_START)
+ == stream_start);
+ expect(lzma_info_size_get(info, LZMA_INFO_HEADER_METADATA)
+ == header_metadata_size);
+ expect(lzma_info_size_get(info, LZMA_INFO_TOTAL) == total_size);
+ expect(lzma_info_size_get(info, LZMA_INFO_UNCOMPRESSED)
+ == uncompressed_size);
+ expect(lzma_info_size_get(info, LZMA_INFO_FOOTER_METADATA)
+ == footer_metadata_size);
+}
+
+
+static void
+test1(void)
+{
+ // Basics
+ expect(lzma_info_size_set(info, LZMA_INFO_STREAM_START,
+ stream_start = 1234) == LZMA_OK);
+ validate();
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA,
+ header_metadata_size = 2345) == LZMA_OK);
+ validate();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, total_size = 3456)
+ == LZMA_OK);
+ validate();
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED,
+ uncompressed_size = 4567) == LZMA_OK);
+ validate();
+ expect(lzma_info_size_set(info, LZMA_INFO_FOOTER_METADATA,
+ footer_metadata_size = 5432) == LZMA_OK);
+ validate();
+
+ // Not everything allow zero size
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_STREAM_START,
+ stream_start = 0) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA,
+ header_metadata_size = 0) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED,
+ uncompressed_size = 0) == LZMA_OK);
+ validate();
+
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, 0)
+ == LZMA_PROG_ERROR);
+
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_FOOTER_METADATA, 0)
+ == LZMA_PROG_ERROR);
+
+ // Invalid sizes
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_STREAM_START,
+ LZMA_VLI_VALUE_MAX + 1) == LZMA_PROG_ERROR);
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA,
+ LZMA_VLI_VALUE_MAX + 1) == LZMA_PROG_ERROR);
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL,
+ LZMA_VLI_VALUE_MAX + 1) == LZMA_PROG_ERROR);
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED,
+ LZMA_VLI_VALUE_MAX + 1) == LZMA_PROG_ERROR);
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_FOOTER_METADATA,
+ LZMA_VLI_VALUE_MAX + 1) == LZMA_PROG_ERROR);
+
+ reset();
+}
+
+
+static bool
+test2_helper(lzma_vli *num, lzma_info_size type)
+{
+ expect(lzma_info_size_set(info, type, *num = 1234) == LZMA_OK);
+ validate();
+ const bool ret = lzma_info_size_set(info, type, 4321) != LZMA_OK;
+ reset();
+ return ret;
+}
+
+
+static void
+test2(void)
+{
+ // Excluding start offset of Stream, once a size has been set,
+ // trying to set some other known value fails.
+ expect(!test2_helper(&stream_start, LZMA_INFO_STREAM_START));
+ expect(test2_helper(&header_metadata_size, LZMA_INFO_HEADER_METADATA));
+ expect(test2_helper(&total_size, LZMA_INFO_TOTAL));
+ expect(test2_helper(&uncompressed_size, LZMA_INFO_UNCOMPRESSED));
+ expect(test2_helper(&footer_metadata_size, LZMA_INFO_FOOTER_METADATA));
+}
+
+
+static void
+test3_init(void)
+{
+ reset();
+ lzma_info_iter_begin(info, &iter);
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+}
+
+
+static void
+test3(void)
+{
+ // Setting the same sizes multiple times for the same Index Record
+ // is OK, but the values must always be the same.
+ test3_init();
+ expect(lzma_info_index_count_get(info) == 1);
+ expect(lzma_info_iter_set(&iter, 1234, 2345) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 1);
+ expect(lzma_info_iter_set(&iter, 1234, 2345) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 1);
+ expect(lzma_info_iter_set(&iter, 1111, 2345) == LZMA_DATA_ERROR);
+
+ // Cannot finish an empty Index.
+ test3_init();
+ expect(lzma_info_index_finish(info) == LZMA_DATA_ERROR);
+
+ test3_init();
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 2);
+ expect(lzma_info_iter_set(&iter, 1234, 2345) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 2);
+ expect(lzma_info_index_finish(info) == LZMA_DATA_ERROR);
+
+ test3_init();
+ expect(lzma_info_iter_set(&iter, 1234, 2345) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 1);
+ expect(lzma_info_index_finish(info) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, 1234) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED, 2345)
+ == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, 1111)
+ == LZMA_DATA_ERROR);
+
+ test3_init();
+ expect(lzma_info_iter_set(&iter, 1234, 2345) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 1);
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 2);
+ expect(lzma_info_iter_set(&iter, 4321, 5432) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 2);
+ expect(lzma_info_index_finish(info) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, 1234 + 4321)
+ == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED, 2345 + 5432)
+ == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED, 1111)
+ == LZMA_DATA_ERROR);
+
+ test3_init();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, 1234 + 4321)
+ == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED, 2345 + 5432)
+ == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED, 1111)
+ == LZMA_DATA_ERROR);
+ expect(lzma_info_iter_set(&iter, 1234, 2345) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 1);
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 2);
+ expect(lzma_info_iter_set(&iter, 4321, 5432) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 2);
+ expect(lzma_info_index_finish(info) == LZMA_OK);
+
+ test3_init();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, 1000) == LZMA_OK);
+ expect(lzma_info_iter_set(&iter, 1001, 2001) == LZMA_DATA_ERROR);
+
+ test3_init();
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED, 2000)
+ == LZMA_OK);
+ expect(lzma_info_iter_set(&iter, 1001, 2001) == LZMA_DATA_ERROR);
+
+ reset();
+}
+
+
+static void
+test4(void)
+{
+ // 4a
+ lzma_info_iter_begin(info, &iter);
+ expect(lzma_info_index_count_get(info) == 0);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_offset == 0);
+ expect(lzma_info_index_count_get(info) == 1);
+
+ expect(lzma_info_iter_set(&iter, 22, 33) == LZMA_OK);
+ expect(iter.total_size == 22);
+ expect(iter.uncompressed_size == 33);
+ expect(iter.stream_offset == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_offset == 0);
+ expect(lzma_info_index_count_get(info) == 1);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_offset == 33);
+
+ // 4b
+ reset();
+ lzma_info_iter_begin(info, &iter);
+ expect(lzma_info_index_count_get(info) == 0);
+ expect(lzma_info_size_set(info, LZMA_INFO_STREAM_START, 5) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA, 11)
+ == LZMA_OK);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11);
+ expect(iter.uncompressed_offset == 0);
+ expect(lzma_info_index_count_get(info) == 1);
+
+ expect(lzma_info_iter_set(&iter, 22, 33) == LZMA_OK);
+ expect(iter.total_size == 22);
+ expect(iter.uncompressed_size == 33);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11);
+ expect(iter.uncompressed_offset == 0);
+ expect(lzma_info_index_count_get(info) == 1);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11 + 22);
+ expect(iter.uncompressed_offset == 33);
+ expect(lzma_info_index_count_get(info) == 2);
+
+ expect(lzma_info_iter_set(&iter, 44, 55) == LZMA_OK);
+ expect(iter.total_size == 44);
+ expect(iter.uncompressed_size == 55);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11 + 22);
+ expect(iter.uncompressed_offset == 33);
+ expect(lzma_info_index_count_get(info) == 2);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44);
+ expect(iter.uncompressed_offset == 33 + 55);
+ expect(lzma_info_index_count_get(info) == 3);
+
+ expect(lzma_info_iter_set(&iter, 66, 77) == LZMA_OK);
+ expect(iter.total_size == 66);
+ expect(iter.uncompressed_size == 77);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44);
+ expect(iter.uncompressed_offset == 33 + 55);
+ expect(lzma_info_index_count_get(info) == 3);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44 + 66);
+ expect(iter.uncompressed_offset == 33 + 55 + 77);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_set(&iter, 88, 99) == LZMA_OK);
+ expect(iter.total_size == 88);
+ expect(iter.uncompressed_size == 99);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44 + 66);
+ expect(iter.uncompressed_offset == 33 + 55 + 77);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ // 4c (continues from 4b)
+ lzma_info_iter_begin(info, &iter);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == 22);
+ expect(iter.uncompressed_size == 33);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11);
+ expect(iter.uncompressed_offset == 0);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_set(&iter, 22, LZMA_VLI_VALUE_UNKNOWN)
+ == LZMA_OK);
+ expect(iter.total_size == 22);
+ expect(iter.uncompressed_size == 33);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11);
+ expect(iter.uncompressed_offset == 0);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == 44);
+ expect(iter.uncompressed_size == 55);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11 + 22);
+ expect(iter.uncompressed_offset == 33);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_set(&iter, LZMA_VLI_VALUE_UNKNOWN, 55)
+ == LZMA_OK);
+ expect(iter.total_size == 44);
+ expect(iter.uncompressed_size == 55);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11 + 22);
+ expect(iter.uncompressed_offset == 33);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == 66);
+ expect(iter.uncompressed_size == 77);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44);
+ expect(iter.uncompressed_offset == 33 + 55);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_set(&iter, LZMA_VLI_VALUE_UNKNOWN,
+ LZMA_VLI_VALUE_UNKNOWN) == LZMA_OK);
+ expect(iter.total_size == 66);
+ expect(iter.uncompressed_size == 77);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44);
+ expect(iter.uncompressed_offset == 33 + 55);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == 88);
+ expect(iter.uncompressed_size == 99);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44 + 66);
+ expect(iter.uncompressed_offset == 33 + 55 + 77);
+ expect(lzma_info_index_count_get(info) == 4);
+
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44 + 66 + 88);
+ expect(iter.uncompressed_offset == 33 + 55 + 77 + 99);
+ expect(lzma_info_index_count_get(info) == 5);
+
+ expect(lzma_info_iter_set(&iter, 1234, LZMA_VLI_VALUE_UNKNOWN)
+ == LZMA_OK);
+ expect(iter.total_size == 1234);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44 + 66 + 88);
+ expect(iter.uncompressed_offset == 33 + 55 + 77 + 99);
+ expect(lzma_info_index_count_get(info) == 5);
+
+ // Test 4d (continues from 4c)
+ lzma_info_iter_begin(info, &iter);
+ for (size_t i = 0; i < 4; ++i)
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(lzma_info_iter_set(&iter, 88, 99) == LZMA_OK);
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.total_size == 1234);
+ expect(iter.uncompressed_size == LZMA_VLI_VALUE_UNKNOWN);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44 + 66 + 88);
+ expect(iter.uncompressed_offset == 33 + 55 + 77 + 99);
+ expect(lzma_info_index_count_get(info) == 5);
+
+ expect(lzma_info_iter_set(&iter, LZMA_VLI_VALUE_UNKNOWN, 4321)
+ == LZMA_OK);
+ expect(iter.total_size == 1234);
+ expect(iter.uncompressed_size == 4321);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE
+ + 11 + 22 + 44 + 66 + 88);
+ expect(iter.uncompressed_offset == 33 + 55 + 77 + 99);
+ expect(lzma_info_index_count_get(info) == 5);
+
+ expect(lzma_info_index_finish(info) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 5);
+
+ // Test 4e (continues from 4d)
+ lzma_info_iter_begin(info, &iter);
+ for (size_t i = 0; i < 5; ++i)
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(lzma_info_iter_set(&iter, 1234, 4321) == LZMA_OK);
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_DATA_ERROR);
+
+ reset();
+}
+
+
+static void
+test5(void)
+{
+ lzma_index *i;
+
+ expect(lzma_info_index_set(info, NULL, NULL, true)
+ == LZMA_PROG_ERROR);
+
+ reset();
+ expect(lzma_info_index_set(info, NULL, my_index, false) == LZMA_OK);
+ i = lzma_index_dup(my_index, NULL);
+ expect(i != NULL);
+ i->next->uncompressed_size = 99;
+ expect(lzma_info_index_set(info, NULL, i, true) == LZMA_DATA_ERROR);
+
+ reset();
+ expect(lzma_info_index_set(info, NULL, my_index, false) == LZMA_OK);
+ i = lzma_index_dup(my_index, NULL);
+ expect(i != NULL);
+ lzma_index_free(i->next->next, NULL);
+ i->next->next = NULL;
+ expect(lzma_info_index_set(info, NULL, i, true) == LZMA_DATA_ERROR);
+
+ reset();
+ expect(lzma_info_index_set(info, NULL, my_index, false) == LZMA_OK);
+ i = lzma_index_dup(my_index, NULL);
+ expect(i != NULL);
+ lzma_index_free(i->next->next, NULL);
+ i->next->next = lzma_index_dup(my_index, NULL);
+ expect(i->next->next != NULL);
+ expect(lzma_info_index_set(info, NULL, i, true) == LZMA_DATA_ERROR);
+
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL,
+ total_size = 22 + 44 + 66) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED,
+ uncompressed_size = 33 + 55 + 77) == LZMA_OK);
+ validate();
+ expect(lzma_info_index_set(info, NULL, my_index, false) == LZMA_OK);
+ validate();
+
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL, total_size = 77)
+ == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED,
+ uncompressed_size = 33 + 55 + 77) == LZMA_OK);
+ validate();
+ expect(lzma_info_index_set(info, NULL, my_index, false)
+ == LZMA_DATA_ERROR);
+
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_TOTAL,
+ total_size = 22 + 44 + 66) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_UNCOMPRESSED,
+ uncompressed_size = 777777) == LZMA_OK);
+ validate();
+ expect(lzma_info_index_set(info, NULL, my_index, false)
+ == LZMA_DATA_ERROR);
+
+ reset();
+}
+
+
+static void
+test6(void)
+{
+ lzma_metadata metadata;
+
+ // Same complete Metadata in both Header and Footer
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA,
+ my_metadata.header_metadata_size) == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &my_metadata, true, false)
+ == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &my_metadata, false, false)
+ == LZMA_OK);
+
+ // Header Metadata is not present but Size of Header Metadata is
+ // still present in Footer.
+ reset();
+ metadata = my_metadata;
+ metadata.header_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA, 0)
+ == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &metadata, true, false)
+ == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &my_metadata, false, false)
+ == LZMA_DATA_ERROR);
+
+ // Header Metadata is present but Size of Header Metadata is missing
+ // from Footer.
+ reset();
+ metadata = my_metadata;
+ metadata.header_metadata_size = LZMA_VLI_VALUE_UNKNOWN;
+ expect(lzma_info_metadata_set(info, NULL, &my_metadata, true, false)
+ == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA,
+ my_metadata.header_metadata_size) == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &metadata, false, false)
+ == LZMA_DATA_ERROR);
+
+ // Index missing
+ reset();
+ metadata = my_metadata;
+ metadata.index = NULL;
+ expect(lzma_info_metadata_set(info, NULL, &metadata, true, false)
+ == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &metadata, false, false)
+ == LZMA_DATA_ERROR);
+
+ // Index in Header Metadata but not in Footer Metadata
+ reset();
+ expect(lzma_info_metadata_set(info, NULL, &my_metadata, true, false)
+ == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &metadata, false, false)
+ == LZMA_OK);
+
+ // Index in Header Metadata but not in Footer Metadata but
+ // Total Size is missing from Footer.
+ reset();
+ metadata.total_size = LZMA_VLI_VALUE_UNKNOWN;
+ expect(lzma_info_metadata_set(info, NULL, &my_metadata, true, false)
+ == LZMA_OK);
+ expect(lzma_info_metadata_set(info, NULL, &metadata, false, false)
+ == LZMA_DATA_ERROR);
+
+ // Total Size doesn't match the Index
+ reset();
+ metadata = my_metadata;
+ metadata.total_size = 9999;
+ expect(lzma_info_metadata_set(info, NULL, &metadata, true, false)
+ == LZMA_DATA_ERROR);
+
+ // Uncompressed Size doesn't match the Index
+ reset();
+ metadata = my_metadata;
+ metadata.uncompressed_size = 9999;
+ expect(lzma_info_metadata_set(info, NULL, &metadata, true, false)
+ == LZMA_DATA_ERROR);
+
+ reset();
+}
+
+
+static void
+test7(void)
+{
+ // No info yet, so we cannot locate anything.
+ expect(lzma_info_metadata_locate(info, true)
+ == LZMA_VLI_VALUE_UNKNOWN);
+ expect(lzma_info_metadata_locate(info, false)
+ == LZMA_VLI_VALUE_UNKNOWN);
+
+ // Setting the Stream start offset doesn't change this situation.
+ expect(lzma_info_size_set(info, LZMA_INFO_STREAM_START, 5) == LZMA_OK);
+ expect(lzma_info_metadata_locate(info, true)
+ == LZMA_VLI_VALUE_UNKNOWN);
+ expect(lzma_info_metadata_locate(info, false)
+ == LZMA_VLI_VALUE_UNKNOWN);
+
+ // Setting the Size of Header Metadata known allows us to locate
+ // the Header Metadata Block.
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA, 11)
+ == LZMA_OK);
+ expect(lzma_info_metadata_locate(info, true)
+ == 5 + LZMA_STREAM_HEADER_SIZE);
+ expect(lzma_info_metadata_locate(info, false)
+ == LZMA_VLI_VALUE_UNKNOWN);
+
+ // Adding a Data Block. As long as Index is not Finished, we cannot
+ // locate Footer Metadata Block.
+ lzma_info_iter_begin(info, &iter);
+ expect(lzma_info_iter_next(&iter, NULL) == LZMA_OK);
+ expect(iter.stream_offset == 5 + LZMA_STREAM_HEADER_SIZE + 11);
+ expect(iter.uncompressed_offset == 0);
+ expect(lzma_info_iter_set(&iter, 22, 33) == LZMA_OK);
+ expect(lzma_info_metadata_locate(info, true)
+ == 5 + LZMA_STREAM_HEADER_SIZE);
+ expect(lzma_info_metadata_locate(info, false)
+ == LZMA_VLI_VALUE_UNKNOWN);
+
+ // Once the Index is finished, we can locate Footer Metadata Block too.
+ expect(lzma_info_index_finish(info) == LZMA_OK);
+ expect(lzma_info_metadata_locate(info, true)
+ == 5 + LZMA_STREAM_HEADER_SIZE);
+ expect(lzma_info_metadata_locate(info, false)
+ == 5 + LZMA_STREAM_HEADER_SIZE + 11 + 22);
+
+ // A retry of most of the above but now with unknown Size of Header
+ // Metadata Block, which makes locating Footer Metadata Block
+ // impossible.
+ reset();
+ expect(lzma_info_size_set(info, LZMA_INFO_STREAM_START, 5) == LZMA_OK);
+ expect(lzma_info_metadata_locate(info, true)
+ == LZMA_VLI_VALUE_UNKNOWN);
+ expect(lzma_info_metadata_locate(info, false)
+ == LZMA_VLI_VALUE_UNKNOWN);
+
+ expect(lzma_info_index_set(info, NULL, my_index, false) == LZMA_OK);
+ expect(lzma_info_metadata_locate(info, true)
+ == LZMA_VLI_VALUE_UNKNOWN);
+ expect(lzma_info_metadata_locate(info, false)
+ == LZMA_VLI_VALUE_UNKNOWN);
+
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA, 11)
+ == LZMA_OK);
+ expect(lzma_info_metadata_locate(info, true)
+ == 5 + LZMA_STREAM_HEADER_SIZE);
+ expect(lzma_info_metadata_locate(info, false)
+ == LZMA_STREAM_HEADER_SIZE + 5 + 11 + 22 + 44 + 66);
+
+ reset();
+}
+
+
+static void
+test8(void)
+{
+ expect(lzma_info_size_set(info, LZMA_INFO_STREAM_START, 5) == LZMA_OK);
+ expect(lzma_info_size_set(info, LZMA_INFO_HEADER_METADATA, 11)
+ == LZMA_OK);
+
+ lzma_info_iter_begin(info, &iter);
+ expect(lzma_info_iter_locate(&iter, NULL, 0, false)
+ == LZMA_DATA_ERROR);
+ expect(lzma_info_index_count_get(info) == 0);
+
+ lzma_info_iter_begin(info, &iter);
+ expect(lzma_info_iter_locate(&iter, NULL, 0, true) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 1);
+ expect(lzma_info_iter_locate(&iter, NULL, 0, false) == LZMA_OK);
+ expect(lzma_info_index_count_get(info) == 1);
+
+ // TODO
+}
+
+
+/*
+static void
+test9(void)
+{
+ // TODO Various integer overflow checks
+}
+*/
+
+
+int
+main()
+{
+ lzma_init();
+
+ info = lzma_info_init(NULL, NULL);
+ if (info == NULL)
+ return 1;
+
+ validate();
+
+ test1();
+ test2();
+ test3();
+ test4();
+ test5();
+ test6();
+ test7();
+ test8();
+
+ lzma_info_free(info, NULL);
+ return 0;
+}
diff --git a/tests/test_stream_flags.c b/tests/test_stream_flags.c
new file mode 100644
index 0000000..4cd2257
--- /dev/null
+++ b/tests/test_stream_flags.c
@@ -0,0 +1,191 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file test_stream_flags.c
+/// \brief Tests Stream Header and Stream tail coders
+//
+// Copyright (C) 2007 Lasse Collin
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "tests.h"
+
+
+static lzma_stream_flags known_flags;
+static lzma_stream_flags decoded_flags;
+static uint8_t buffer[LZMA_STREAM_HEADER_SIZE + LZMA_STREAM_TAIL_SIZE];
+static lzma_stream strm = LZMA_STREAM_INIT;
+
+
+static bool
+validate(void)
+{
+ if (known_flags.check != decoded_flags.check
+ || known_flags.has_crc32 != decoded_flags.has_crc32
+ || known_flags.is_multi != decoded_flags.is_multi)
+ return true;
+
+ return false;
+}
+
+
+static bool
+test_header_decoder(size_t expected_size, lzma_ret expected_ret)
+{
+ memcrap(&decoded_flags, sizeof(decoded_flags));
+
+ if (lzma_stream_header_decoder(&strm, &decoded_flags) != LZMA_OK)
+ return true;
+
+ if (coder_loop(&strm, buffer, expected_size, NULL, 0,
+ expected_ret, LZMA_RUN))
+ return true;
+
+ if (expected_ret != LZMA_STREAM_END)
+ return false;
+
+ return validate();
+}
+
+
+static void
+test_header(void)
+{
+ memcrap(buffer, sizeof(buffer));
+ expect(lzma_stream_header_encode(buffer, &known_flags) == LZMA_OK);
+ succeed(test_header_decoder(LZMA_STREAM_HEADER_SIZE, LZMA_STREAM_END));
+}
+
+
+static bool
+test_tail_decoder(size_t expected_size, lzma_ret expected_ret)
+{
+ memcrap(&decoded_flags, sizeof(decoded_flags));
+
+ if (lzma_stream_tail_decoder(&strm, &decoded_flags) != LZMA_OK)
+ return true;
+
+ if (coder_loop(&strm, buffer, expected_size, NULL, 0,
+ expected_ret, LZMA_RUN))
+ return true;
+
+ if (expected_ret == LZMA_STREAM_END && validate())
+ return true;
+
+ return false;
+}
+
+
+static void
+test_tail(void)
+{
+ memcrap(buffer, sizeof(buffer));
+ expect(lzma_stream_tail_encode(buffer, &known_flags) == LZMA_OK);
+ succeed(test_tail_decoder(LZMA_STREAM_TAIL_SIZE, LZMA_STREAM_END));
+}
+
+
+static void
+test_encode_invalid(void)
+{
+ known_flags.check = LZMA_CHECK_ID_MAX + 1;
+ known_flags.has_crc32 = false;
+ known_flags.is_multi = false;
+
+ expect(lzma_stream_header_encode(buffer, &known_flags)
+ == LZMA_PROG_ERROR);
+
+ expect(lzma_stream_tail_encode(buffer, &known_flags)
+ == LZMA_PROG_ERROR);
+
+ known_flags.check = (lzma_check_type)(-1);
+
+ expect(lzma_stream_header_encode(buffer, &known_flags)
+ == LZMA_PROG_ERROR);
+
+ expect(lzma_stream_tail_encode(buffer, &known_flags)
+ == LZMA_PROG_ERROR);
+}
+
+
+static void
+test_decode_invalid(void)
+{
+ known_flags.check = LZMA_CHECK_NONE;
+ known_flags.has_crc32 = false;
+ known_flags.is_multi = false;
+
+ expect(lzma_stream_header_encode(buffer, &known_flags) == LZMA_OK);
+
+ // Test 1 (invalid Magic Bytes)
+ buffer[5] ^= 1;
+ succeed(test_header_decoder(6, LZMA_DATA_ERROR));
+ buffer[5] ^= 1;
+
+ // Test 2a (valid CRC32)
+ uint32_t crc = lzma_crc32(buffer + 6, 1, 0);
+ for (size_t i = 0; i < 4; ++i)
+ buffer[7 + i] = crc >> (i * 8);
+ succeed(test_header_decoder(LZMA_STREAM_HEADER_SIZE, LZMA_STREAM_END));
+
+ // Test 2b (invalid Stream Flags with valid CRC32)
+ buffer[6] ^= 0x20;
+ crc = lzma_crc32(buffer + 6, 1, 0);
+ for (size_t i = 0; i < 4; ++i)
+ buffer[7 + i] = crc >> (i * 8);
+ succeed(test_header_decoder(7, LZMA_HEADER_ERROR));
+
+ // Test 3 (invalid CRC32)
+ expect(lzma_stream_header_encode(buffer, &known_flags) == LZMA_OK);
+ buffer[LZMA_STREAM_HEADER_SIZE - 1] ^= 1;
+ succeed(test_header_decoder(LZMA_STREAM_HEADER_SIZE, LZMA_DATA_ERROR));
+
+ // Test 4 (invalid Stream Flags)
+ expect(lzma_stream_tail_encode(buffer, &known_flags) == LZMA_OK);
+ buffer[0] ^= 0x40;
+ succeed(test_tail_decoder(1, LZMA_HEADER_ERROR));
+ buffer[0] ^= 0x40;
+
+ // Test 5 (invalid Magic Bytes)
+ buffer[2] ^= 1;
+ succeed(test_tail_decoder(3, LZMA_DATA_ERROR));
+}
+
+
+int
+main()
+{
+ lzma_init();
+
+ // Valid headers
+ for (lzma_check_type check = LZMA_CHECK_NONE;
+ check <= LZMA_CHECK_ID_MAX; ++check) {
+ for (int has_crc32 = 0; has_crc32 <= 1; ++has_crc32) {
+ for (int is_multi = 0; is_multi <= 1; ++is_multi) {
+ known_flags.check = check;
+ known_flags.has_crc32 = has_crc32;
+ known_flags.is_multi = is_multi;
+
+ test_header();
+ test_tail();
+ }
+ }
+ }
+
+ // Invalid headers
+ test_encode_invalid();
+ test_decode_invalid();
+
+ lzma_end(&strm);
+
+ return 0;
+}
diff --git a/tests/tests.h b/tests/tests.h
new file mode 100644
index 0000000..08a3991
--- /dev/null
+++ b/tests/tests.h
@@ -0,0 +1,148 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file tests.h
+/// \brief Common definitions for test applications
+//
+// Copyright (C) 2006 Lasse Collin
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_TESTS_H
+#define LZMA_TESTS_H
+
+#include "sysdefs.h"
+
+#include <stdio.h>
+
+#define memcrap(buf, size) memset(buf, 0xFD, size)
+
+#define expect(test) ((test) ? 0 : (fprintf(stderr, "%s:%u: %s\n", \
+ __FILE__, __LINE__, #test), exit(1), 0))
+
+#define succeed(test) expect(!test)
+
+#define fail(test) expect(test)
+
+
+static inline const char *
+lzma_ret_sym(lzma_ret ret)
+{
+ const char *str = "";
+
+ switch (ret) {
+ case LZMA_OK:
+ str = "LZMA_OK";
+ break;
+
+ case LZMA_STREAM_END:
+ str = "LZMA_STREAM_END";
+ break;
+
+ case LZMA_PROG_ERROR:
+ str = "LZMA_PROG_ERROR";
+ break;
+
+ case LZMA_DATA_ERROR:
+ str = "LZMA_DATA_ERROR";
+ break;
+
+ case LZMA_MEM_ERROR:
+ str = "LZMA_MEM_ERROR";
+ break;
+
+ case LZMA_BUF_ERROR:
+ str = "LZMA_BUF_ERROR";
+ break;
+
+ case LZMA_HEADER_ERROR:
+ str = "LZMA_HEADER_ERROR";
+ break;
+
+ case LZMA_UNSUPPORTED_CHECK:
+ str = "LZMA_UNSUPPORTED_CHECK";
+ break;
+ }
+
+ return str;
+}
+
+
+static inline bool
+coder_loop(lzma_stream *strm, uint8_t *in, size_t in_size,
+ uint8_t *out, size_t out_size,
+ lzma_ret expected_ret, lzma_action finishing_action)
+{
+ size_t in_left = in_size;
+ size_t out_left = out_size > 0 ? out_size + 1 : 0;
+ lzma_action action = LZMA_RUN;
+ lzma_ret ret;
+
+ strm->next_in = NULL;
+ strm->avail_in = 0;
+ strm->next_out = NULL;
+ strm->avail_out = 0;
+
+ while (true) {
+ if (in_left > 0) {
+ if (--in_left == 0)
+ action = finishing_action;
+
+ strm->next_in = in++;
+ strm->avail_in = 1;
+ }
+
+ if (out_left > 0) {
+ --out_left;
+ strm->next_out = out++;
+ strm->avail_out = 1;
+ }
+
+ ret = lzma_code(strm, action);
+ if (ret != LZMA_OK)
+ break;
+ }
+
+ bool error = false;
+
+ if (ret != expected_ret)
+ error = true;
+
+ if (expected_ret == LZMA_STREAM_END) {
+ if (strm->total_in != in_size || strm->total_out != out_size)
+ error = true;
+ } else {
+ if (strm->total_in + 1 != in_size
+ || strm->total_out != out_size)
+ error = true;
+ }
+
+ return error;
+}
+
+
+static inline bool
+decoder_loop_ret(lzma_stream *strm, uint8_t *in, size_t in_size,
+ lzma_ret expected_ret)
+{
+ return coder_loop(strm, in, in_size, NULL, 0, expected_ret, LZMA_RUN);
+}
+
+
+static inline bool
+decoder_loop(lzma_stream *strm, uint8_t *in, size_t in_size)
+{
+ return coder_loop(strm, in, in_size, NULL, 0,
+ LZMA_STREAM_END, LZMA_RUN);
+}
+
+#endif
