zlib 1.1.0
diff --git a/ChangeLog b/ChangeLog
index e4d8871..8160d28 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,17 @@
ChangeLog file for zlib
+Changes in 1.1 (24 Feb 98)
+- do not return STREAM_END prematurely in inflate (John Bowler)
+- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
+- compile with -DFASTEST to get compression code optimized for speed only
+- in minigzip, try mmap'ing the input file first (Miguel Albrecht)
+- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
+ on Sun but significant on HP)
+
+- add a pointer to experimental unzip library in README (Gilles Vollant)
+- initialize variable gcc in configure (Chris Herborth)
+
Changes in 1.0.9 (17 Feb 1998)
- added gzputs and gzgets functions
- do not clear eof flag in gzseek (Mark Diekhans)
diff --git a/Makefile b/Makefile
index f6c3ca7..257f394 100644
--- a/Makefile
+++ b/Makefile
@@ -23,7 +23,7 @@
LDFLAGS=-L. -lz
LDSHARED=$(CC)
-VER=1.0.9
+VER=1.1.0
LIBS=libz.a
SHAREDLIB=libz.so
diff --git a/Makefile.in b/Makefile.in
index f6c3ca7..257f394 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -23,7 +23,7 @@
LDFLAGS=-L. -lz
LDSHARED=$(CC)
-VER=1.0.9
+VER=1.1.0
LIBS=libz.a
SHAREDLIB=libz.so
diff --git a/README b/README
index c1d217f..5aacb53 100644
--- a/README
+++ b/README
@@ -1,4 +1,4 @@
-zlib 1.0.9 is a general purpose data compression library. All the code
+zlib 1.1.0 is a general purpose data compression library. All the code
is thread safe. The data format used by the zlib library
is described by RFCs (Request for Comments) 1950 to 1952 in the files
ftp://ds.internic.net/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
@@ -25,21 +25,15 @@
Dr. Dobb's Journal; a copy of the article is available in
http://web2.airmail.net/markn/articles/zlibtool/zlibtool.htm
-The changes made in version 1.0.9 are documented in the file ChangeLog.
-The main changes since 1.0.8 are:
+The changes made in version 1.1.0 are documented in the file ChangeLog.
+The main changes since 1.0.9 are:
-- added gzputs and gzgets functions
-- do not clear eof flag in gzseek (Mark Diekhans)
-- fix gzseek for files in transparent mode (Mark Diekhans)
-- do not assume that vsprintf returns the number of bytes written (Jens Krinke)
-- replace EXPORT with ZEXPORT to avoid conflict with other programs
-- added compress2 in zconf.h, zlib.def, zlib.dnt
-- new asm code from Gilles Vollant in contrib/asm386
-- simplify the inflate code (Mark):
- . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()
- . ZALLOC the length list in inflate_trees_fixed() instead of using stack
- . ZALLOC the value area for huft_build() instead of using stack
- . Simplify Z_FINISH check in inflate()
+- do not return STREAM_END prematurely in inflate (John Bowler)
+- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
+- compile with -DFASTEST to get compression code optimized for speed only
+- in minigzip, try mmap'ing the input file first (Miguel Albrecht)
+- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
+ on Sun but significant on HP)
Unsupported third party contributions are provided in directory "contrib".
@@ -56,6 +50,11 @@
is available from the Python Software Association sites, such as:
ftp://ftp.python.org/pub/python/contrib/Encoding/zlib*.tar.gz
+An experimental package to read files in .zip format, written on top of
+zlib by Gilles Vollant <info@winimage.com>, is available at
+http://www.winimage.com/zLibDll/unzip.html
+
+
Notes for some targets:
- To build a Windows DLL version, include in a DLL project zlib.def, zlib.rc
@@ -83,7 +82,7 @@
writes to pointers are atomic. Also the functions zalloc and zfree passed
to deflateInit must be multi-threaded in this case.
-- gzdopen is not supported on RISCOS, BEOS and Mac
+- gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.
- For Turbo C the small model is supported only with reduced performance to
avoid any far allocation; it was tested with -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
diff --git a/configure b/configure
index bde53b1..43fc26b 100755
--- a/configure
+++ b/configure
@@ -27,6 +27,7 @@
exec_prefix=${exec_prefix-$prefix}
shared_ext='.so'
shared=0
+gcc=0
old_cc="$CC"
old_cflags="$CFLAGS"
@@ -114,7 +115,6 @@
LDSHARED="$CC"
echo Building static library $LIBS version $VER with $CC.
fi
-rm -f $test.[co] $test$shared_ext
if test -f /usr/include/unistd.h; then
CFLAGS="$CFLAGS -DHAVE_UNISTD_H"
@@ -124,6 +124,23 @@
CFLAGS="$CFLAGS -DNO_ERRNO_H"
fi
+cat > $test.c <<EOF
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+caddr_t hello() {
+ return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0);
+}
+EOF
+if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
+ CFLAGS="$CFLAGS -DUSE_MMAP"
+ echo Checking for mmap support... Yes.
+else
+ echo Checking for mmap support... No.
+fi
+
+rm -f $test.[co] $test$shared_ext
+
# udpate Makefile
sed < Makefile.in "
/^CC *=/s%=.*%=$CC%
diff --git a/deflate.c b/deflate.c
index e9c14d7..dc60299 100644
--- a/deflate.c
+++ b/deflate.c
@@ -52,7 +52,7 @@
#include "deflate.h"
const char deflate_copyright[] =
- " deflate 1.0.9 Copyright 1995-1998 Jean-loup Gailly ";
+ " deflate 1.1.0 Copyright 1995-1998 Jean-loup Gailly ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
@@ -160,14 +160,23 @@
* Insert string str in the dictionary and set match_head to the previous head
* of the hash chain (the most recent string with same hash key). Return
* the previous length of the hash chain.
+ * If this file is compiled with -DFASTEST, the compression level is forced
+ * to 1, and no hash chains are maintained.
* IN assertion: all calls to to INSERT_STRING are made with consecutive
* input characters and the first MIN_MATCH bytes of str are valid
* (except for the last MIN_MATCH-1 bytes of the input file).
*/
+#ifdef FASTEST
+#define INSERT_STRING(s, str, match_head) \
+ (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+ match_head = s->head[s->ins_h], \
+ s->head[s->ins_h] = (Pos)(str))
+#else
#define INSERT_STRING(s, str, match_head) \
(UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
s->prev[(str) & s->w_mask] = match_head = s->head[s->ins_h], \
s->head[s->ins_h] = (Pos)(str))
+#endif
/* ===========================================================================
* Initialize the hash table (avoiding 64K overflow for 16 bit systems).
@@ -224,6 +233,9 @@
if (strm->zfree == Z_NULL) strm->zfree = zcfree;
if (level == Z_DEFAULT_COMPRESSION) level = 6;
+#ifdef FASTEST
+ level = 1;
+#endif
if (windowBits < 0) { /* undocumented feature: suppress zlib header */
noheader = 1;
@@ -708,6 +720,7 @@
/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
* match.S. The code will be functionally equivalent.
*/
+#ifndef FASTEST
local uInt longest_match(s, cur_match)
deflate_state *s;
IPos cur_match; /* current match */
@@ -845,6 +858,64 @@
if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
return s->lookahead;
}
+
+#else /* FASTEST */
+/* ---------------------------------------------------------------------------
+ * Optimized version for level == 1 only
+ */
+local uInt longest_match(s, cur_match)
+ deflate_state *s;
+ IPos cur_match; /* current match */
+{
+ register Bytef *scan = s->window + s->strstart; /* current string */
+ register Bytef *match; /* matched string */
+ register int len; /* length of current match */
+ register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+
+ /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+ * It is easy to get rid of this optimization if necessary.
+ */
+ Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+ Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+ Assert(cur_match < s->strstart, "no future");
+
+ match = s->window + cur_match;
+
+ /* Return failure if the match length is less than 2:
+ */
+ if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
+
+ /* The check at best_len-1 can be removed because it will be made
+ * again later. (This heuristic is not always a win.)
+ * It is not necessary to compare scan[2] and match[2] since they
+ * are always equal when the other bytes match, given that
+ * the hash keys are equal and that HASH_BITS >= 8.
+ */
+ scan += 2, match += 2;
+ Assert(*scan == *match, "match[2]?");
+
+ /* We check for insufficient lookahead only every 8th comparison;
+ * the 256th check will be made at strstart+258.
+ */
+ do {
+ } while (*++scan == *++match && *++scan == *++match &&
+ *++scan == *++match && *++scan == *++match &&
+ *++scan == *++match && *++scan == *++match &&
+ *++scan == *++match && *++scan == *++match &&
+ scan < strend);
+
+ Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+
+ len = MAX_MATCH - (int)(strend - scan);
+
+ if (len < MIN_MATCH) return MIN_MATCH - 1;
+
+ s->match_start = cur_match;
+ return len <= s->lookahead ? len : s->lookahead;
+}
+#endif /* FASTEST */
#endif /* ASMV */
#ifdef DEBUG
@@ -930,6 +1001,7 @@
} while (--n);
n = wsize;
+#ifndef FASTEST
p = &s->prev[n];
do {
m = *--p;
@@ -938,6 +1010,7 @@
* its value will never be used.
*/
} while (--n);
+#endif
more += wsize;
}
if (s->strm->avail_in == 0) return;
@@ -1105,14 +1178,15 @@
if (s->match_length >= MIN_MATCH) {
check_match(s, s->strstart, s->match_start, s->match_length);
- bflush = _tr_tally(s, s->strstart - s->match_start,
- s->match_length - MIN_MATCH);
+ _tr_tally_dist(s, s->strstart - s->match_start,
+ s->match_length - MIN_MATCH, bflush);
s->lookahead -= s->match_length;
/* Insert new strings in the hash table only if the match length
* is not too large. This saves time but degrades compression.
*/
+#ifndef FASTEST
if (s->match_length <= s->max_insert_length &&
s->lookahead >= MIN_MATCH) {
s->match_length--; /* string at strstart already in hash table */
@@ -1124,7 +1198,9 @@
*/
} while (--s->match_length != 0);
s->strstart++;
- } else {
+ } else
+#endif
+ {
s->strstart += s->match_length;
s->match_length = 0;
s->ins_h = s->window[s->strstart];
@@ -1139,7 +1215,7 @@
} else {
/* No match, output a literal byte */
Tracevv((stderr,"%c", s->window[s->strstart]));
- bflush = _tr_tally (s, 0, s->window[s->strstart]);
+ _tr_tally_lit (s, s->window[s->strstart], bflush);
s->lookahead--;
s->strstart++;
}
@@ -1219,7 +1295,7 @@
check_match(s, s->strstart-1, s->prev_match, s->prev_length);
bflush = _tr_tally(s, s->strstart -1 - s->prev_match,
- s->prev_length - MIN_MATCH);
+ s->prev_length - MIN_MATCH);
/* Insert in hash table all strings up to the end of the match.
* strstart-1 and strstart are already inserted. If there is not
@@ -1245,7 +1321,8 @@
* is longer, truncate the previous match to a single literal.
*/
Tracevv((stderr,"%c", s->window[s->strstart-1]));
- if (_tr_tally (s, 0, s->window[s->strstart-1])) {
+ _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+ if (bflush) {
FLUSH_BLOCK_ONLY(s, 0);
}
s->strstart++;
@@ -1263,7 +1340,7 @@
Assert (flush != Z_NO_FLUSH, "no flush?");
if (s->match_available) {
Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally (s, 0, s->window[s->strstart-1]);
+ _tr_tally_lit(s, s->window[s->strstart-1], bflush);
s->match_available = 0;
}
FLUSH_BLOCK(s, flush == Z_FINISH);
diff --git a/deflate.h b/deflate.h
index 07272d1..34f5126 100644
--- a/deflate.h
+++ b/deflate.h
@@ -273,4 +273,46 @@
void _tr_align OF((deflate_state *s));
void _tr_stored_block OF((deflate_state *s, charf *buf, ulg stored_len,
int eof));
+
+#define d_code(dist) \
+ ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
+/* Mapping from a distance to a distance code. dist is the distance - 1 and
+ * must not have side effects. _dist_code[256] and _dist_code[257] are never
+ * used.
+ */
+
+#ifndef DEBUG
+/* Inline versions of _tr_tally for speed: */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+ extern uch _length_code[];
+ extern uch _dist_code[];
+#else
+ extern const uch _length_code[];
+ extern const uch _dist_code[];
+#endif
+
+# define _tr_tally_lit(s, c, flush) \
+ { uch cc = (c); \
+ s->d_buf[s->last_lit] = 0; \
+ s->l_buf[s->last_lit++] = cc; \
+ s->dyn_ltree[cc].Freq++; \
+ flush = (s->last_lit == s->lit_bufsize-1); \
+ }
+# define _tr_tally_dist(s, distance, length, flush) \
+ { uch len = (length); \
+ ush dist = (distance); \
+ s->d_buf[s->last_lit] = dist; \
+ s->l_buf[s->last_lit++] = len; \
+ dist--; \
+ s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
+ s->dyn_dtree[d_code(dist)].Freq++; \
+ flush = (s->last_lit == s->lit_bufsize-1); \
+ }
+#else
+# define _tr_tally_lit(s, c, flush) _tr_tally(s, 0, c, flush)
+# define _tr_tally_dist(s, distance, length, flush) \
+ _tr_tally(s, distance, length, flush)
+#endif
+
#endif
diff --git a/gzio.c b/gzio.c
index b816494..bd66085 100644
--- a/gzio.c
+++ b/gzio.c
@@ -13,7 +13,8 @@
struct internal_state {int dummy;}; /* for buggy compilers */
-#define Z_BUFSIZE 4096
+#define Z_BUFSIZE 16384
+#define Z_PRINTF_BUFSIZE 4096
#define ALLOC(size) malloc(size)
#define TRYFREE(p) {if (p) free(p);}
@@ -506,7 +507,7 @@
int ZEXPORTVA gzprintf (gzFile file, const char *format, /* args */ ...)
{
- char buf[Z_BUFSIZE];
+ char buf[Z_PRINTF_BUFSIZE];
va_list va;
int len;
@@ -531,7 +532,7 @@
int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
{
- char buf[Z_BUFSIZE];
+ char buf[Z_PRINTF_BUFSIZE];
int len;
#ifdef HAS_snprintf
diff --git a/inflate.c b/inflate.c
index 7b9bc3b..32e9b8d 100644
--- a/inflate.c
+++ b/inflate.c
@@ -229,6 +229,7 @@
r = f;
if (r != Z_STREAM_END)
return r;
+ r = f;
inflate_blocks_reset(z->state->blocks, z, &z->state->sub.check.was);
if (z->state->nowrap)
{
@@ -322,7 +323,8 @@
/* search */
while (n && m < 4)
{
- if (*p == (Byte)(m < 2 ? 0 : (Byte)0xff))
+ static const Byte mark[4] = {0, 0, 0xff, 0xff};
+ if (*p == mark[m])
m++;
else if (*p)
m = 0;
diff --git a/inftrees.c b/inftrees.c
index 282f277..205ddc5 100644
--- a/inftrees.c
+++ b/inftrees.c
@@ -7,7 +7,7 @@
#include "inftrees.h"
const char inflate_copyright[] =
- " inflate 1.0.9 Copyright 1995-1998 Mark Adler ";
+ " inflate 1.1.0 Copyright 1995-1998 Mark Adler ";
/*
If you use the zlib library in a product, an acknowledgment is welcome
in the documentation of your product. If for some reason you cannot
diff --git a/minigzip.c b/minigzip.c
index 14d1277..c05d0ea 100644
--- a/minigzip.c
+++ b/minigzip.c
@@ -25,6 +25,11 @@
extern void exit OF((int));
#endif
+#ifdef USE_MMAP
+# include <sys/types.h>
+# include <sys/mman.h>
+# include <sys/stat.h>
+#endif
#if defined(MSDOS) || defined(OS2) || defined(WIN32)
# include <fcntl.h>
@@ -53,7 +58,7 @@
#endif
#define SUFFIX_LEN (sizeof(GZ_SUFFIX)-1)
-#define BUFLEN 4096
+#define BUFLEN 16384
#define MAX_NAME_LEN 1024
#ifdef MAXSEG_64K
@@ -65,12 +70,15 @@
char *prog;
-void error OF((const char *msg));
-void gz_compress OF((FILE *in, gzFile out));
-void gz_uncompress OF((gzFile in, FILE *out));
-void file_compress OF((char *file, char *mode));
-void file_uncompress OF((char *file));
-int main OF((int argc, char *argv[]));
+void error OF((const char *msg));
+void gz_compress OF((FILE *in, gzFile out));
+#ifdef USE_MMAP
+int gz_compress_mmap OF((FILE *in, gzFile out));
+#endif
+void gz_uncompress OF((gzFile in, FILE *out));
+void file_compress OF((char *file, char *mode));
+void file_uncompress OF((char *file));
+int main OF((int argc, char *argv[]));
/* ===========================================================================
* Display error message and exit
@@ -85,6 +93,7 @@
/* ===========================================================================
* Compress input to output then close both files.
*/
+
void gz_compress(in, out)
FILE *in;
gzFile out;
@@ -93,6 +102,12 @@
int len;
int err;
+#ifdef USE_MMAP
+ /* Try first compressing with mmap. If mmap fails (minigzip used in a
+ * pipe), use the normal fread loop.
+ */
+ if (gz_compress_mmap(in, out) == Z_OK) return;
+#endif
for (;;) {
len = fread(buf, 1, sizeof(buf), in);
if (ferror(in)) {
@@ -107,6 +122,43 @@
if (gzclose(out) != Z_OK) error("failed gzclose");
}
+#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */
+
+/* Try compressing the input file at once using mmap. Return Z_OK if
+ * if success, Z_ERRNO otherwise.
+ */
+int gz_compress_mmap(in, out)
+ FILE *in;
+ gzFile out;
+{
+ int len;
+ int err;
+ int ifd = fileno(in);
+ caddr_t buf; /* mmap'ed buffer for the entire input file */
+ off_t buf_len; /* length of the input file */
+ struct stat sb;
+
+ /* Determine the size of the file, needed for mmap: */
+ if (fstat(ifd, &sb) < 0) return Z_ERRNO;
+ buf_len = sb.st_size;
+ if (buf_len <= 0) return Z_ERRNO;
+
+ /* Now do the actual mmap: */
+ buf = mmap((caddr_t) 0, buf_len, PROT_READ, MAP_SHARED, ifd, (off_t)0);
+ if (buf == (caddr_t)(-1)) return Z_ERRNO;
+
+ /* Compress the whole file at once: */
+ len = gzwrite(out, (char *)buf, (unsigned)buf_len);
+
+ if (len != (int)buf_len) error(gzerror(out, &err));
+
+ munmap(buf, buf_len);
+ fclose(in);
+ if (gzclose(out) != Z_OK) error("failed gzclose");
+ return Z_OK;
+}
+#endif /* USE_MMAP */
+
/* ===========================================================================
* Uncompress input to output then close both files.
*/
diff --git a/msdos/zlib.def b/msdos/zlib.def
index 89e626c..2372ab1 100644
--- a/msdos/zlib.def
+++ b/msdos/zlib.def
@@ -8,7 +8,7 @@
STUB 'WINSTUB.EXE'
-VERSION 1.09
+VERSION 1.1
CODE EXECUTE READ
diff --git a/msdos/zlib.rc b/msdos/zlib.rc
index 86690ec..76e0ec2 100644
--- a/msdos/zlib.rc
+++ b/msdos/zlib.rc
@@ -2,8 +2,8 @@
#define IDR_VERSION1 1
IDR_VERSION1 VERSIONINFO MOVEABLE IMPURE LOADONCALL DISCARDABLE
- FILEVERSION 1,0,9,0
- PRODUCTVERSION 1,0,9,0
+ FILEVERSION 1,1,0,0
+ PRODUCTVERSION 1,1,0,0
FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
FILEFLAGS 0
FILEOS VOS_DOS_WINDOWS32
@@ -17,7 +17,7 @@
BEGIN
VALUE "FileDescription", "zlib data compression library\0"
- VALUE "FileVersion", "1.0.9\0"
+ VALUE "FileVersion", "1.1.0\0"
VALUE "InternalName", "zlib\0"
VALUE "OriginalFilename", "zlib.dll\0"
VALUE "ProductName", "ZLib.DLL\0"
diff --git a/trees.c b/trees.c
index e2c230f..e09e94c 100644
--- a/trees.c
+++ b/trees.c
@@ -99,13 +99,13 @@
* 5 bits.)
*/
-local uch dist_code[DIST_CODE_LEN];
+uch _dist_code[DIST_CODE_LEN];
/* Distance codes. The first 256 values correspond to the distances
* 3 .. 258, the last 256 values correspond to the top 8 bits of
* the 15 bit distances.
*/
-local uch length_code[MAX_MATCH-MIN_MATCH+1];
+uch _length_code[MAX_MATCH-MIN_MATCH+1];
/* length code for each normalized match length (0 == MIN_MATCH) */
local int base_length[LENGTH_CODES];
@@ -173,13 +173,6 @@
send_bits(s, tree[c].Code, tree[c].Len); }
#endif
-#define d_code(dist) \
- ((dist) < 256 ? dist_code[dist] : dist_code[256+((dist)>>7)])
-/* Mapping from a distance to a distance code. dist is the distance - 1 and
- * must not have side effects. dist_code[256] and dist_code[257] are never
- * used.
- */
-
/* ===========================================================================
* Output a short LSB first on the stream.
* IN assertion: there is enough room in pendingBuf.
@@ -262,7 +255,7 @@
for (code = 0; code < LENGTH_CODES-1; code++) {
base_length[code] = length;
for (n = 0; n < (1<<extra_lbits[code]); n++) {
- length_code[length++] = (uch)code;
+ _length_code[length++] = (uch)code;
}
}
Assert (length == 256, "tr_static_init: length != 256");
@@ -270,14 +263,14 @@
* in two different ways: code 284 + 5 bits or code 285, so we
* overwrite length_code[255] to use the best encoding:
*/
- length_code[length-1] = (uch)code;
+ _length_code[length-1] = (uch)code;
/* Initialize the mapping dist (0..32K) -> dist code (0..29) */
dist = 0;
for (code = 0 ; code < 16; code++) {
base_dist[code] = dist;
for (n = 0; n < (1<<extra_dbits[code]); n++) {
- dist_code[dist++] = (uch)code;
+ _dist_code[dist++] = (uch)code;
}
}
Assert (dist == 256, "tr_static_init: dist != 256");
@@ -285,7 +278,7 @@
for ( ; code < D_CODES; code++) {
base_dist[code] = dist << 7;
for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
- dist_code[256 + dist++] = (uch)code;
+ _dist_code[256 + dist++] = (uch)code;
}
}
Assert (dist == 256, "tr_static_init: 256+dist != 512");
@@ -349,15 +342,15 @@
static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
}
- fprintf(header, "local const uch dist_code[DIST_CODE_LEN] = {\n");
+ fprintf(header, "const uch _dist_code[DIST_CODE_LEN] = {\n");
for (i = 0; i < DIST_CODE_LEN; i++) {
- fprintf(header, "%2u%s", dist_code[i],
+ fprintf(header, "%2u%s", _dist_code[i],
SEPARATOR(i, DIST_CODE_LEN-1, 20));
}
- fprintf(header, "local const uch length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
+ fprintf(header, "const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
- fprintf(header, "%2u%s", length_code[i],
+ fprintf(header, "%2u%s", _length_code[i],
SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
}
@@ -1045,7 +1038,7 @@
(ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
(ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");
- s->dyn_ltree[length_code[lc]+LITERALS+1].Freq++;
+ s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
s->dyn_dtree[d_code(dist)].Freq++;
}
@@ -1094,7 +1087,7 @@
Tracecv(isgraph(lc), (stderr," '%c' ", lc));
} else {
/* Here, lc is the match length - MIN_MATCH */
- code = length_code[lc];
+ code = _length_code[lc];
send_code(s, code+LITERALS+1, ltree); /* send the length code */
extra = extra_lbits[code];
if (extra != 0) {
diff --git a/trees.h b/trees.h
index 45f9dd3..72facf9 100644
--- a/trees.h
+++ b/trees.h
@@ -70,7 +70,7 @@
{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
};
-local const uch dist_code[DIST_CODE_LEN] = {
+const uch _dist_code[DIST_CODE_LEN] = {
0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,
8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,
10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
@@ -99,7 +99,7 @@
29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
};
-local const uch length_code[MAX_MATCH-MIN_MATCH+1]= {
+const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {
0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,
13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
diff --git a/zlib.3 b/zlib.3
index a969834..ccde8f2 100644
--- a/zlib.3
+++ b/zlib.3
@@ -1,4 +1,4 @@
-.TH ZLIB 3 "16 February 1998"
+.TH ZLIB 3 "24 February 1998"
.SH NAME
zlib \- compression/decompression library
.SH SYNOPSIS
@@ -81,7 +81,7 @@
.IP
ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
.SH AUTHORS
-Version 1.0.9.
+Version 1.1.0
Copyright (C) 1995-1998 Jean-loup Gailly (jloup@gzip.org)
and Mark Adler (madler@alumni.caltech.edu).
.LP
diff --git a/zlib.h b/zlib.h
index 5bcbf12..135c2bd 100644
--- a/zlib.h
+++ b/zlib.h
@@ -1,5 +1,5 @@
/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.0.9, Feb 16th, 1998
+ version 1.1.0, Feb 24th, 1998
Copyright (C) 1995-1998 Jean-loup Gailly and Mark Adler
@@ -37,7 +37,7 @@
#include "zconf.h"
-#define ZLIB_VERSION "1.0.9"
+#define ZLIB_VERSION "1.1.0"
/*
The 'zlib' compression library provides in-memory compression and
