#!/usr/bin/perl -w

# Copyright 2001 Patrik Stridvall
#
# 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.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

use strict;

BEGIN {
    $0 =~ m%^(.*?/?tools)/winapi/winapi_extract$%;
    require "$1/winapi/setup.pm";
}

use config qw(
    &file_type &files_skip &files_filter &get_spec_files
    $current_dir $wine_dir $winapi_dir $winapi_check_dir
);
use output qw($output);
use winapi_extract_options qw($options);

if($options->progress) {
    $output->enable_progress;
} else {
    $output->disable_progress;
}

use function;
use type;
use winapi_function;
use winapi_parser;
use winapi qw(@winapis);

my %module2entries;
my %module2spec_file;
my %module2type;
my %module2filename;
if($options->spec_files || $options->winetest) {
    local $_;

    foreach my $spec_file (get_spec_files("winelib")) {
	my $entries = [];

	my $module;
	my $type;

	open(IN, "< $wine_dir/$spec_file");

	my $header = 1;
	my $lookahead = 0;
	while($lookahead || defined($_ = <IN>)) {
	    $lookahead = 0;

	    s/^\s*?(.*?)\s*$/$1/; # remove whitespace at begining and end of line
	    s/^(.*?)\s*#.*$/$1/;  # remove comments
	    /^$/ && next;         # skip empty lines

	    if($header)  {
		if(/^name\s+(.*?)$/) {
		    $module = $1;
		    $module2spec_file{$module} = $spec_file;
		} elsif(/^file\s+(.*?)$/) {
		    my $filename = $1;
		    $module2filename{$module} = $filename;
		} elsif(/^type\s+(.*?)$/) {
		    $type = $1;
		    $module2type{$module} = $type;
		} elsif(/^\d+|@/) {
		    $header = 0;
		    $lookahead = 1;
		}
		next;
	    }

	    if(/^(@|\d+)\s+stdcall\s+(\w+)\s*\(\s*([^\)]*)\s*\)/) {
		my $ordinal = $1;
		my $name = $2;
		my @args = split(/\s+/, $3);

		push @$entries, [$name, "undef", \@args];
	    }
	}
	close(IN);

	$module2entries{$module} = $entries;
    }
}

my %specifications;

sub documentation_specifications {
    my $function = shift;

    my @debug_channels = @{$function->debug_channels};
    my $documentation = $function->documentation;
    my $documentation_line = $function->documentation_line;
    my $return_type = $function->return_type;
    my $linkage = $function->linkage;
    my $internal_name = $function->internal_name;

    if($linkage eq "static") {
	return;
    }

    local $_;
    foreach (split(/\n/, $documentation)) {
	if(/^\s*\*\s*(\S+)\s*[\(\[]\s*(\w+)\s*\.\s*(\S+)\s*[\)\]]/) {
	    my $external_name = $1;
	    my $module = lc($2);
	    my $ordinal = $3;

	    if($ordinal eq "@") {
		if(1 || !exists($specifications{$module}{unfixed}{$external_name})) {
		    $specifications{$module}{unfixed}{$external_name}{ordinal} = $ordinal;
		    $specifications{$module}{unfixed}{$external_name}{external_name} = $external_name;
		    $specifications{$module}{unfixed}{$external_name}{function} = $function;
		} else {
		    $output->write("$external_name ($module.$ordinal) already exists\n");
		}
	    } elsif($ordinal =~ /^\d+$/) {
		if(1 || !exists($specifications{$module}{fixed}{$ordinal})) {
		    $specifications{$module}{fixed}{$ordinal}{ordinal} = $ordinal;
		    $specifications{$module}{fixed}{$ordinal}{external_name} = $external_name;
		    $specifications{$module}{fixed}{$ordinal}{function} = $function;
		    } else {
			$output->write("$external_name ($module.$ordinal) already exists\n");
		    }
	    } elsif($ordinal eq "init") {
		if(!exists($specifications{$module}{init})) {
		    $specifications{$module}{init}{function} = $function;
		} else {
		    $output->write("$external_name ($module.$ordinal) already exists\n");
		}
	    } else {
		if(!exists($specifications{$module}{unknown}{$external_name})) {
		    $specifications{$module}{unknown}{$external_name}{ordinal} = $ordinal;
		    $specifications{$module}{unknown}{$external_name}{external_name} = $external_name;
		    $specifications{$module}{unknown}{$external_name}{function} = $function;
		} else {
		    $output->write("$external_name ($module.$ordinal) already exists\n");
		}
	    }

	    if($options->debug) {
		$output->write("$external_name ($module.$ordinal)\n");
	    }
	}
    }
}

my %module_pseudo_stub_count16;
my %module_pseudo_stub_count32;

sub statements_stub {
    my $function = shift;

    my $statements = $function->statements;
    if(defined($statements) && $statements =~ /FIXME[^;]*stub/s) {
	if($options->win16) {
	    foreach my $module16 ($function->modules16) {
		$module_pseudo_stub_count16{$module16}++;
	    }
	}
	if($options->win32) {
	    foreach my $module32 ($function->modules32) {
		$module_pseudo_stub_count32{$module32}++;
	    }
	}
    }
}

my @c_files = $options->c_files;
@c_files = files_skip(@c_files);
@c_files = files_filter("winelib", @c_files);

my $progress_output;
my $progress_current = 0;
my $progress_max = scalar(@c_files);

foreach my $file (@c_files) {
    my %functions;

    $progress_current++;
    $output->progress("$file (file $progress_current of $progress_max)");

    my $create_function = sub {
	if($options->stub_statistics) {
	    return 'winapi_function'->new;
	} else {
	    return 'function'->new;
	}
    };

    my $found_function = sub {
	my $function = shift;

	my $internal_name = $function->internal_name;
	$functions{$internal_name} = $function;

	$output->progress("$file (file $progress_current of $progress_max): $internal_name");
	$output->prefix_callback(sub { return $function->prefix; });

	my $documentation_line = $function->documentation_line;
	my $documentation = $function->documentation;
	my $function_line = $function->function_line;
	my $linkage = $function->linkage;
	my $return_type = $function->return_type;
	my $calling_convention = $function->calling_convention;
	my $statements = $function->statements;

	if($options->spec_files || $options->winetest) {
	    documentation_specifications($function);
	}

	if($options->stub_statistics) {
	    statements_stub($function);
	}

	$output->prefix("");
    };

    my $create_type = sub {
	return 'type'->new;
    };

    my $found_type = sub {
	my $type = shift;
    };

    my $found_preprocessor = sub {
	my $directive = shift;
	my $argument = shift;
    };

    &winapi_parser::parse_c_file($file, $create_function, $found_function, $create_type, $found_type, $found_preprocessor);

    my @internal_names = keys(%functions);
    if($#internal_names < 0) {
	$output->write("$file: doesn't contain any functions\n");
    }
}

sub output_function {
    local *OUT = shift;
    my $type = shift;
    my $ordinal = shift;
    my $external_name = shift;
    my $function = shift;

    my $internal_name = $function->internal_name;

    my $return_kind;
    my $calling_convention;
    my $refargument_kinds;
    if($type eq "win16") {
	$return_kind = $function->return_kind16 || "undef";
	$calling_convention = $function->calling_convention16 || "undef";
	$refargument_kinds = $function->argument_kinds16;
    } elsif($type eq "win32") {
	$return_kind = $function->return_kind32 || "undef";
	$calling_convention = $function->calling_convention32 || "undef";
	$refargument_kinds = $function->argument_kinds32;
    }

    if(defined($refargument_kinds)) {
	my @argument_kinds = map { $_ || "undef"; } @$refargument_kinds;
	print OUT "$ordinal $calling_convention $external_name(@argument_kinds) $internal_name\n";
    } else {
	print OUT "$ordinal $calling_convention $external_name() $internal_name # FIXME: arguments undefined\n";
    }
}

if($options->spec_files) {
    foreach my $module (keys(%specifications)) {
	my $spec_file = $module2spec_file{$module};
	my $type = $module2type{$module};

	if(!defined($spec_file) || !defined($type)) {
	    $output->write("$module: doesn't exist\n");
	    next;
	}

	$spec_file .= "2";

	$output->progress("$spec_file");
	open(OUT, "> $wine_dir/$spec_file");

	print OUT "name $module\n";
	print OUT "type $type\n";
	if(exists($specifications{$module}{init})) {
	    my $function = $specifications{$module}{init}{function};
	    print OUT "init " . $function->internal_name . "\n";
	}
	print OUT "\n";

	my %debug_channels;
	if(exists($specifications{$module}{init})) {
	    my $function = $specifications{$module}{init}{function};
	    foreach my $debug_channel (@{$function->debug_channels}) {
		$debug_channels{$debug_channel}++;
	    }
	}
	foreach my $ordinal (sort {$a <=> $b} keys(%{$specifications{$module}{fixed}})) {
	    my $function = $specifications{$module}{fixed}{$ordinal}{function};
	    foreach my $debug_channel (@{$function->debug_channels}) {
		$debug_channels{$debug_channel}++;
	    }
	}
	foreach my $name (sort(keys(%{$specifications{$module}{unfixed}}))) {
	    my $function = $specifications{$module}{unfixed}{$name}{function};
	    foreach my $debug_channel (@{$function->debug_channels}) {
		$debug_channels{$debug_channel}++;
	    }
	}
	foreach my $name (sort(keys(%{$specifications{$module}{unknown}}))) {
	    my $function = $specifications{$module}{unknown}{$name}{function};
	    foreach my $debug_channel (@{$function->debug_channels}) {
		$debug_channels{$debug_channel}++;
	    }
	}

	my @debug_channels = sort(keys(%debug_channels));
	if($#debug_channels >= 0) {
	    print OUT "debug_channels (" .  join(" ", @debug_channels) . ")\n";
	    print OUT "\n";
	}

	my $empty = 1;

	if(!$empty) {
	    print OUT "\n";
	    $empty = 1;
	}
	foreach my $external_name (sort(keys(%{$specifications{$module}{unknown}}))) {
	    my $entry = $specifications{$module}{unknown}{$external_name};
	    my $ordinal = $entry->{ordinal};
	    my $function = $entry->{function};
	    print OUT "# ";
	    output_function(\*OUT, $type, $ordinal, $external_name, $function);
	    $empty = 0;
	}

	if(!$empty) {
	    print OUT "\n";
	    $empty = 1;
	}
	foreach my $ordinal (sort {$a <=> $b} keys(%{$specifications{$module}{fixed}})) {
	    my $entry = $specifications{$module}{fixed}{$ordinal};
	    my $external_name = $entry->{external_name};
	    my $function = $entry->{function};
	    output_function(\*OUT, $type, $ordinal, $external_name, $function);
	    $empty = 0;
	}

	if(!$empty) {
	    print OUT "\n";
	    $empty = 1;
	}
	foreach my $external_name (sort(keys(%{$specifications{$module}{unfixed}}))) {
	    my $entry = $specifications{$module}{unfixed}{$external_name};
	    my $ordinal = $entry->{ordinal};
	    my $function = $entry->{function};
	    output_function(\*OUT, $type, $ordinal, $external_name, $function);
	    $empty = 0;
	}

	close(OUT);
    }
}

if($options->stub_statistics) {
    foreach my $winapi (@winapis) {
	if($winapi->name eq "win16" && !$options->win16) { next; }
	if($winapi->name eq "win32" && !$options->win32) { next; }

	my %module_stub_count;
	my %module_total_count;

	foreach my $internal_name ($winapi->all_internal_functions,$winapi->all_functions_stub) {
	    foreach my $module (split(/ \& /, $winapi->function_internal_module($internal_name))) {
		if($winapi->is_function_stub_in_module($module, $internal_name)) {
		    $module_stub_count{$module}++;
		}
		$module_total_count{$module}++;
	    }
	}

	foreach my $module ($winapi->all_modules) {
	    my $pseudo_stubs;
	    if($winapi->name eq "win16") {
		$pseudo_stubs = $module_pseudo_stub_count16{$module};
	    } elsif($winapi->name eq "win32") {
		$pseudo_stubs = $module_pseudo_stub_count32{$module};
	    }

	    my $real_stubs = $module_stub_count{$module};
	    my $total = $module_total_count{$module};

	    if(!defined($real_stubs)) { $real_stubs = 0; }
	    if(!defined($pseudo_stubs)) { $pseudo_stubs = 0; }
	    if(!defined($total)) { $total = 0;}

	    my $stubs = $real_stubs + $pseudo_stubs;

	    $output->write("*.c: $module: ");
	    $output->write("$stubs of $total functions are stubs ($real_stubs real, $pseudo_stubs pseudo)\n");
	}
    }
}

if($options->winetest) {
    foreach my $module (sort(keys(%specifications))) {
	my $type = $module2type{$module};
        my $filename = $module2filename{$module} || $module;
        my $modulename = $filename;
        $modulename =~ s/\./_/g;

	next unless $type eq "win32";

	my @entries;

	foreach my $external_name (sort(keys(%{$specifications{$module}{unknown}}))) {
	    my $entry = $specifications{$module}{unknown}{$external_name};
	    push @entries, $entry;
	}

	foreach my $ordinal (sort {$a <=> $b} keys(%{$specifications{$module}{fixed}})) {
	    my $entry = $specifications{$module}{fixed}{$ordinal};
	    push @entries, $entry;
	}

	foreach my $external_name (sort(keys(%{$specifications{$module}{unfixed}}))) {
	    my $entry = $specifications{$module}{unfixed}{$external_name};
	    push @entries, $entry;
	}

	my $n = 0;
	foreach my $entry (@entries) {
	    my $external_name = $entry->{external_name};
	    my $ordinal = $entry->{ordinal};
	    my $function = $entry->{function};

	    my $return_kind;
	    my $calling_convention;
	    my $refargument_kinds;
	    if($type eq "win16") {
		$return_kind = $function->return_kind16 || "undef";
		$calling_convention = $function->calling_convention16 || "undef";
		$refargument_kinds = $function->argument_kinds16;
	    } elsif($type eq "win32") {
		$return_kind = $function->return_kind32 || "undef";
		$calling_convention = $function->calling_convention32 || "undef";
		$refargument_kinds = $function->argument_kinds32;
	    }

	    my @argument_kinds;
	    if(defined($refargument_kinds)) {
		@argument_kinds = map { $_ || "undef"; } @$refargument_kinds;
	    }

	    next if $calling_convention ne "stdcall";
	    next if $external_name eq "\@";

	    if($n == 0) {
                open(OUT, "> $wine_dir/programs/winetest/include/${modulename}.pm");

                print OUT "package ${modulename};\n";
                print OUT "\n";

                print OUT "use strict;\n";
                print OUT "\n";

                print OUT "require Exporter;\n";
                print OUT "\n";

                print OUT "use wine;\n";
                print OUT "use vars qw(\@ISA \@EXPORT \@EXPORT_OK);\n";
                print OUT "\n";

                print OUT "\@ISA = qw(Exporter);\n";
                print OUT "\@EXPORT = qw();\n";
                print OUT "\@EXPORT_OK = qw();\n";
                print OUT "\n";

                print OUT "my \$module_declarations = {\n";
	    } elsif($n > 0) {
		print OUT ",\n";
	    }

	    print OUT "    \"\Q$external_name\E\" => [\"$return_kind\",  [";
	    my $m = 0;
	    foreach my $argument_kind (@argument_kinds) {
		if($m > 0) {
		    print OUT ", ";
		}
		print OUT "\"$argument_kind\"";
		$m++;
	    }
	    print OUT "]]";
	    $n++;
	}

	if($n > 0) {
	    print OUT "\n";
	    print OUT "};\n";
	    print OUT "\n";
            print OUT "&wine::declare(\"$filename\",\%\$module_declarations);\n";
            print OUT "push \@EXPORT, map { \"&\" . \$_; } sort(keys(\%\$module_declarations));\n";
	    print OUT "1;\n";
            close(OUT);
	}
    }
}