bin/parse-packages

   1 #!/usr/bin/perl -w
   2 # Convert Packages.gz files into Sleepycat db files for efficient usage of
   3 # data
   4 #
   5 # $Id$
   6 #
   7 # Copyright (C) 2006  Jeroen van Wolffelaar <jeroen@wolffelaar.nl>
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 2 of the License, or
  11 # (at your option) any later version.
  12
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21
  22 use strict;
  23
  24 my $what = $ARGV[0] ? "non-free" : "*";
  25 # max. distinct results for a given package postfix
  26 my $MAX_PACKAGE_POSTFIXES = 100;
  27
  28 use DB_File;
  29 my %packages_small = ();
  30 my %package_names = ();
  31 my %package_postfixes = ();
  32 my %sources_packages = ();
  33 my %descriptions = ();
  34 my @descriptions = ("we count lines one-based\000");
  35 my %packages_descriptions = ();
  36 my %descriptions_packages = ();
  37
  38 my @suites = ('oldstable', 'stable', 'testing', 'unstable', 'experimental');
  39
  40 $/ = "";
  41
  42 for my $suite (@suites) {
  43
  44         print "Reading $suite...\n";
  45         my %packages_all_db;
  46         tie %packages_all_db, "DB_File", "packages_all_$suite.db.new",
  47                 O_RDWR|O_CREAT, 0666, $DB_BTREE
  48                 or die "Error creating DB: $!";
  49         open PKG, "zcat /org/ftp.debian.org/ftp/dists/$suite/$what/{,debian-installer/}binary-*/Packages.gz|";
  50         while (<PKG>) {
  51                 next if /^\s*$/;
  52                 my $data = "";
  53                 my %data = ();
  54                 chomp;
  55                 s/\n /\377/g;
  56                 #s/\376\377\s*\376\377/\376\377/og;
  57                 while (/^(\S+):\s*(.*)\s*$/mg) {
  58                         my ($key, $value) = ($1, $2);
  59                         $value =~ s/\377/\n /g;
  60                         $data .= "$key: $value\n";
  61                         $key =~ tr [A-Z] [a-z];
  62                         $data{$key} = $value;
  63                 }
  64                 # Skip double package
  65                 next if exists($packages_all_db{"$data{'package'} $data{'architecture'} $data{'version'}"});
  66                 $packages_all_db{"$data{'package'} $data{'architecture'} $data{'version'}"}
  67                         = $data;
  68
  69                 $package_names{$data{'package'}} = 1;
  70                 my $src = $data{'package'};
  71                 if ($data{'source'}) {
  72                         $src = $data{'source'};
  73                         $src =~ s/ .*//; # strip version info
  74                 }
  75                 my $descr = $data{'description'};
  76                 my $did = undef;
  77                 if (exists($descriptions{$descr})) {
  78                         $did  = $descriptions{$descr};
  79                 } else {
  80                         $did = 1 + $#descriptions;
  81                         $descriptions[$did] = $descr;
  82                         $descriptions{$descr} = $did;
  83                 }
  84                 $packages_descriptions{"$data{'package'} $data{'version'} $data{'architecture'}"} = $did;
  85                 $descriptions_packages{$did} .=
  86                         "$data{'package'} $data{'version'} $data{'architecture'}\000";
  87
  88                 my $sdescr = $descr;
  89                 $sdescr =~ s/\n.*//s;
  90                 my $section = 'main';
  91                 my $subsection = $data{section};
  92                 if ($data{section} && ($data{section} =~ m=/=o)) {
  93                     ($section, $subsection) = split m=/=o, $data{section}, 2;
  94                 }
  95                 $packages_small{$data{'package'}} .= "$suite $data{'architecture'} ".
  96                         "$section $subsection $data{'priority'} $data{'version'} $sdescr\000";
  97                 $sources_packages{$src} .=
  98                         "$suite $data{'package'} $data{'version'} $data{'architecture'}\000";
  99         }
 100
 101         untie %packages_all_db;
 102 }
 103
 104 print "Writing databases...\n";
 105 my %packages_small_db;
 106 tie %packages_small_db, "DB_File", "packages_small.db.new",
 107         O_RDWR|O_CREAT, 0666, $DB_BTREE
 108         or die "Error creating DB: $!";
 109 while (my ($k, $v) = each(%packages_small)) {
 110         $v =~ s/.$//s;
 111         $packages_small_db{$k} = $v;
 112 }
 113 untie %packages_small_db;
 114
 115 my %sources_packages_db;
 116 tie %sources_packages_db, "DB_File", "sources_packages.db.new",
 117         O_RDWR|O_CREAT, 0666, $DB_BTREE
 118         or die "Error creating DB: $!";
 119 while (my ($k, $v) = each(%sources_packages)) {
 120         $v =~ s/.$//s;
 121         $sources_packages_db{$k} = $v;
 122 }
 123 untie %sources_packages_db;
 124
 125 my %packages_descriptions_db;
 126 tie %packages_descriptions_db, "DB_File", "packages_descriptions.db.new",
 127         O_RDWR|O_CREAT, 0666, $DB_BTREE
 128         or die "Error creating DB: $!";
 129 while (my ($k, $v) = each(%packages_descriptions)) {
 130         $packages_descriptions_db{$k} = $v;
 131 }
 132 untie %packages_descriptions_db;
 133
 134 my %descriptions_packages_db;
 135 tie %descriptions_packages_db, "DB_File", "descriptions_packages.db.new",
 136         O_RDWR|O_CREAT, 0666, $DB_BTREE
 137         or die "Error creating DB: $!";
 138 while (my ($k, $v) = each(%descriptions_packages)) {
 139         $v =~ s/.$//s;
 140         $descriptions_packages_db{$k} = $v;
 141 }
 142 untie %descriptions_packages_db;
 143
 144 my %descriptions_db;
 145 tie %descriptions_db, "DB_File", "descriptions.db.new",
 146         O_RDWR|O_CREAT, 0666, $DB_BTREE
 147         or die "Error creating DB: $!";
 148 open DESCR, "> descriptions.txt" or die "Error creating descriptions textfile";
 149 for (my $i=1; $i<= $#descriptions; $i++) {
 150         my $null_d = $descriptions[$i];
 151         $null_d =~ s/\n/\000/g;
 152         print DESCR "$null_d\n";
 153         $descriptions_db{$i} = $descriptions[$i];
 154 }
 155 close DESCR;
 156 untie %descriptions_db;
 157
 158 # package names stuff:
 159 for my $pkg (keys %package_names) {
 160         for (my $i=0;$i<length($pkg)-1;$i++) {
 161                 my $before = substr($pkg, 0, $i);
 162                 my $after = substr($pkg, $i);
 163                 $package_postfixes{$after} .= "$before\0";
 164         }
 165 }
 166 my %package_postfixes_db;
 167 tie %package_postfixes_db, "DB_File", "package_postfixes.db.new",
 168         O_RDWR|O_CREAT, 0666, $DB_BTREE
 169         or die "Error creating DB: $!";
 170 while (my ($k, $v) = each(%package_postfixes)) {
 171         $v =~ s/.$//s;
 172         my $nr = $v;
 173         $nr =~ s/[^\000]//g;
 174         $nr = length($nr) + 1; # < number of hits
 175         if ($nr > $MAX_PACKAGE_POSTFIXES) {
 176                 $v = "\001" . $nr;
 177         }
 178         $package_postfixes_db{$k} = $v;
 179 }
 180 untie %package_postfixes_db;
 181
 182 rename("packages_small.db.new", "packages_small.db");
 183 rename("sources_packages.db.new", "sources_packages.db");
 184 for my $suite (@suites) {
 185         rename("packages_all_$suite.db.new", "packages_all_$suite.db");
 186 }
 187 rename("packages_descriptions.db.new", "packages_descriptions.db");
 188 rename("descriptions_packages.db.new", "descriptions_packages.db");
 189 rename("descriptions.txt.new", "descriptions.txt");
 190 rename("descriptions.db.new", "descriptions.db");
 191 rename("package_postfixes.db.new", "package_postfixes.db");