1#
2# -*- Perl -*-
3# $Id: deb.pl,v 1.5.4.10 2008-05-09 07:22:08 opengl2772 Exp $
4# Copyright (C) 2000-2008 Namazu Project All rights reserved ,
5#     This is free software with ABSOLUTELY NO WARRANTY.
6#
7#  This program is free software; you can redistribute it and/or modify
8#  it under the terms of the GNU General Public License as published by
9#  the Free Software Foundation; either versions 2, or (at your option)
10#  any later version.
11#
12#  This program is distributed in the hope that it will be useful
13#  but WITHOUT ANY WARRANTY; without even the implied warranty of
14#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15#  GNU General Public License for more details.
16#
17#  You should have received a copy of the GNU General Public License
18#  along with this program; if not, write to the Free Software
19#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20#  02111-1307, USA
21#
22#  This file must be encoded in EUC-JP encoding
23#
24
25package deb;
26use strict;
27require 'util.pl';
28require 'gfilter.pl';
29
30my $dpkgpath = undef;
31my @dpkgopts = undef;
32
33sub mediatype() {
34    return ('application/x-deb');
35}
36
37sub status() {
38    $dpkgpath = util::checkcmd('dpkg');
39    @dpkgopts = ("--info");
40    return 'no' unless (defined $dpkgpath);
41    return 'yes';
42}
43
44sub recursive() {
45    return 0;
46}
47
48sub pre_codeconv() {
49    return 0;
50}
51
52sub post_codeconv () {
53    return 0;
54}
55
56sub add_magic ($) {
57    my ($magic) = @_;
58
59    # FIXME: very ad hoc.
60    $magic->addFileExts('\\.deb$', 'application/x-deb');
61    return;
62}
63
64sub filter ($$$$$) {
65    my ($orig_cfile, $cont, $weighted_str, $headings, $fields)
66	= @_;
67    my $cfile = defined $orig_cfile ? $$orig_cfile : '';
68
69    util::vprint("Processing deb file ... (using  '$dpkgpath')\n");
70
71    my $tmpfile = util::tmpnam('NMZ.deb');
72    {
73	my $fh = util::efopen("> $tmpfile");
74	print $fh $$cont;
75        util::fclose($fh);
76    }
77    {
78        my %env = (
79            "LC_ALL" => $util::LANG,
80            "LANGUAGE" => $util::LANG,
81        );
82	my @cmd = ($dpkgpath, @dpkgopts, $tmpfile);
83        my $fh_out = IO::File->new_tmpfile();
84        my $status = util::syscmd(
85            command => \@cmd,
86            option => {
87                "stdout" => $fh_out,
88                "stderr" => "/dev/null",
89            },
90            env => \%env,
91        );
92	my $size = util::filesize($fh_out);
93	if ($size == 0) {
94            util::fclose($fh_out);
95            unlink $tmpfile;
96	    return "Unable to convert file ($dpkgpath error occurred)";
97	}
98	if ($size > $conf::FILE_SIZE_MAX) {
99            util::fclose($fh_out);
100            unlink $tmpfile;
101	    return 'Too large deb file';
102	}
103	$$cont = util::readfile($fh_out);
104        util::fclose($fh_out);
105    }
106    unlink $tmpfile;
107
108    codeconv::normalize_document($cont);
109
110    dpkg_filter($cont, $weighted_str, $fields, $headings);
111
112    gfilter::line_adjust_filter($cont);
113    gfilter::line_adjust_filter($weighted_str);
114    gfilter::white_space_adjust_filter($cont);
115    $fields->{'title'} = gfilter::filename_to_title($cfile, $weighted_str)
116	unless $fields->{'title'};
117    gfilter::show_filter_debug_info($cont, $weighted_str,
118				    $fields, $headings);
119
120    return undef;
121}
122
123sub dpkg_filter ($$$$) {
124    my ($contref, $weighted_str, $fields, $headings) = @_;
125
126    deb::get_title($contref, $weighted_str, $fields);
127    deb::get_author($contref, $fields);
128#    deb::get_date($contref, $fields);
129    deb::get_size($contref, $fields);
130    deb::get_summary($contref, $fields);
131
132    return;
133}
134
135
136# Below is the sample result of 'dpkg --info deb'.
137#
138#  new debian package, version 2.0.
139#  size 30606 bytes: control archive= 1247 bytes.
140#      351 bytes,    12 lines      control
141#     1174 bytes,    18 lines      md5sums
142#      389 bytes,    11 lines   *  postinst             #!/bin/sh
143#      143 bytes,     4 lines   *  postrm               #!/bin/sh
144#      184 bytes,     6 lines   *  prerm                #!/bin/sh
145#  Package: irb
146#  Version: 1.6.2-1
147#  Section: interpreters
148#  Priority: optional
149#  Architecture: all
150#  Depends: ruby (>= 1.6.2-1), libreadline-ruby (>= 1.6.2-1)
151#  Installed-Size: 139
152#  Maintainer: akira yamada <akira@debian.org>
153#  Source: ruby
154#  Description: The Intaractive Ruby.
155#   The irb is acronym for Interactive RuBy.  It evaluates ruby expression
156#   from the terminal.
157
158sub get_title ($$$) {
159    my ($contref, $weighted_str, $fields) = @_;
160
161    if ($$contref =~ /^ Description: (.*)/m) {
162	my $tmp = $1;
163	$fields->{'title'} = $tmp;
164	my $weight = $conf::Weight{'html'}->{'title'};
165	$$weighted_str .= "\x7f$weight\x7f$tmp\x7f/$weight\x7f\n";
166    }
167}
168
169sub get_author ($$) {
170    my ($contref, $fields) = @_;
171
172    if ($$contref =~ /^ Maintainer: (.*)/m) {
173	my $tmp = $1;
174	$fields->{'author'} = $tmp;
175    }
176}
177
178sub get_size ($$) {
179    my ($contref, $fields) = @_;
180
181    if ($$contref =~ /^ size (\d+) bytes:/m) {
182	my $tmp = $1;
183	$fields->{'size'} = $tmp;
184    }
185}
186
187sub get_summary ($$) {
188    my ($contref, $fields) = @_;
189
190    if ($$contref =~ /^.*Description:[^\n]*\n(.*)/is) {
191	my $tmp = $1;
192	$fields->{'summary'} = $tmp;
193    }
194}
195
1961;
197