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 use lib './lib';
  24
  25 my $what = $ARGV[0] ? "non-free" : "*";
  26 # max. distinct results for a given package postfix
  27 my $MAX_PACKAGE_POSTFIXES = 100;
  28
  29 use DB_File;
  30 use Storable;
  31 use Packages::Config qw( $TOPDIR $DBDIR @ARCHIVES @SUITES );
  32 &Packages::Config::init( './' );
  33 my %packages_small = ();
  34 my %package_names = ();
  35 my %package_postfixes = ();
  36 my %sources_packages = ();
  37 my %descriptions = ();
  38 my @descriptions = ("we count lines one-based\000");
  39 my %packages_descriptions = ();
  40 my %descriptions_packages = ();
  41
  42 my %sections = ();
  43 my %subsections = ();
  44 my %priorities = ();
  45
  46 $/ = "";
  47
  48 for my $archive (@ARCHIVES) {
  49     for my $suite (@SUITES) {
  50
  51         my %virtual_packages = ();
  52         print "Reading $archive/$suite...\n";
  53         my %packages_all_db;
  54         tie %packages_all_db, "DB_File", "$DBDIR/packages_all_$suite.db.new",
  55                 O_RDWR|O_CREAT, 0666, $DB_BTREE
  56                 or die "Error creating DB: $!";
  57         open PKG, "zcat $TOPDIR/archive/$archive/$suite/$what/{,debian-installer/}binary-*/Packages.gz|";
  58         while (<PKG>) {
  59                 next if /^\s*$/;
  60                 my $data = "";
  61                 my %data = ();
  62                 chomp;
  63                 s/\n /\377/g;
  64                 while (/^(\S+):\s*(.*)\s*$/mg) {
  65                         my ($key, $value) = ($1, $2);
  66                         $value =~ s/\377/\n /g;
  67                         $key =~ tr [A-Z] [a-z];
  68                         $data{$key} = $value;
  69                 }
  70                 # Skip double package
  71                 next if exists($packages_all_db{"$data{'package'} $data{'architecture'} $data{'version'}"});
  72
  73                 if ($data{'provides'}) {
  74                     foreach (split /\s*,\s*/, $data{'provides'}) {
  75                         $virtual_packages{$_}{$data{'package'}}++;
  76                     }
  77                 }
  78                 $package_names{$data{'package'}} = 1;
  79                 my $src = $data{'package'};
  80                 my $src_version = '';
  81                 if ($data{'source'}) {
  82                         $src = $data{'source'};
  83                         $src =~ s/\s+.*//; # strip version info
  84                 }
  85                 $data{'source'} = $src;
  86                 my $descr = $data{'description'};
  87                 my $did = undef;
  88                 if (exists($descriptions{$descr})) {
  89                         $did  = $descriptions{$descr};
  90                 } else {
  91                         $did = 1 + $#descriptions;
  92                         $descriptions[$did] = $descr;
  93                         $descriptions{$descr} = $did;
  94                 }
  95                 $data{'description'} = $did;
  96                 $packages_descriptions{"$data{'package'} $data{'version'} $data{'architecture'}"} = $did;
  97                 $descriptions_packages{$did} .=
  98                         "$data{'package'} $data{'version'} $data{'architecture'}\000";
  99
 100                 my $sdescr = $descr;
 101                 $sdescr =~ s/\n.*//s;
 102                 my $section = 'main';
 103                 my $subsection = $data{section} || '-';
 104                 if ($data{section} && ($data{section} =~ m=/=o)) {
 105                     ($section, $subsection) = split m=/=o, $data{section}, 2;
 106                     ($subsection, $section) = split m=/=o, $data{section}, 2
 107                         if $section eq 'non-US';
 108                 }
 109                 $data{'section'} = $section;
 110                 $data{'subsection'} = $subsection;
 111                 $data{'priority'} ||= '-';
 112                 $sections{$suite}{$archive}{$section}++;
 113                 $subsections{$suite}{$archive}{$subsection}++;
 114                 $priorities{$suite}{$archive}{$data{priority}}++;
 115                 $packages_small{$data{'package'}} .= "$archive $suite $data{'architecture'} ".
 116                         "$section $subsection $data{'priority'} $data{'version'} $sdescr\000";
 117                 $sources_packages{$src} .=
 118                         "$archive $suite $data{'package'} $data{'version'} $data{'architecture'}\000";
 119                 $data{archive} = $archive;
 120                 while (my ($key, $value) = each (%data)) {
 121                         next if $key eq 'package' or $key eq 'version' or $key eq 'architecture'
 122                                 or $key eq 'maintainer';
 123                         print STDERR "WARN: $key ($suite/$archive/$data{package}/$data{architecture}\n" unless defined $value;
 124                         $data .= "$key\00$value\00";
 125                 }
 126                 $data =~ s/.$//s;
 127                 $packages_all_db{"$data{'package'} $data{'architecture'} $data{'version'}"}
 128                         = $data;
 129         }
 130
 131         foreach (keys %virtual_packages) {
 132             my @provided_by = keys %{$virtual_packages{$_}};
 133             $packages_small{$_} .= "$archive $suite virtual v v v v @provided_by\000";
 134         }
 135
 136         untie %packages_all_db;
 137     }
 138 }
 139
 140 print "Writing databases...\n";
 141 my %packages_small_db;
 142 tie %packages_small_db, "DB_File", "$DBDIR/packages_small.db.new",
 143         O_RDWR|O_CREAT, 0666, $DB_BTREE
 144         or die "Error creating DB: $!";
 145 while (my ($k, $v) = each(%packages_small)) {
 146         $v =~ s/.$//s;
 147         $packages_small_db{$k} = $v;
 148 }
 149 untie %packages_small_db;
 150
 151 my %sources_packages_db;
 152 tie %sources_packages_db, "DB_File", "$DBDIR/sources_packages.db.new",
 153         O_RDWR|O_CREAT, 0666, $DB_BTREE
 154         or die "Error creating DB: $!";
 155 while (my ($k, $v) = each(%sources_packages)) {
 156         $v =~ s/.$//s;
 157         $sources_packages_db{$k} = $v;
 158 }
 159 untie %sources_packages_db;
 160
 161 my %packages_descriptions_db;
 162 tie %packages_descriptions_db, "DB_File", "$DBDIR/packages_descriptions.db.new",
 163         O_RDWR|O_CREAT, 0666, $DB_BTREE
 164         or die "Error creating DB: $!";
 165 while (my ($k, $v) = each(%packages_descriptions)) {
 166         $packages_descriptions_db{$k} = $v;
 167 }
 168 untie %packages_descriptions_db;
 169
 170 my %descriptions_packages_db;
 171 tie %descriptions_packages_db, "DB_File", "$DBDIR/descriptions_packages.db.new",
 172         O_RDWR|O_CREAT, 0666, $DB_BTREE
 173         or die "Error creating DB: $!";
 174 while (my ($k, $v) = each(%descriptions_packages)) {
 175         $v =~ s/.$//s;
 176         $descriptions_packages_db{$k} = $v;
 177 }
 178 untie %descriptions_packages_db;
 179
 180 my %descriptions_db;
 181 tie %descriptions_db, "DB_File", "$DBDIR/descriptions.db.new",
 182         O_RDWR|O_CREAT, 0666, $DB_BTREE
 183         or die "Error creating DB: $!";
 184 open DESCR, ">", "$DBDIR/descriptions.txt" or die "Error creating descriptions textfile";
 185 for (my $i=1; $i<= $#descriptions; $i++) {
 186         my $plain_description = $descriptions[$i];
 187 # WARNING: This needs to correspond with what happens in
 188 # Packages/Search.pm:do_fulltext_search
 189         $plain_description =~ tr [A-Z] [a-z];
 190         # ensure one space on both ends
 191         $plain_description = " $plain_description ";
 192         $plain_description =~ s/[(),.-]+//og;
 193         $plain_description =~ s#[^a-z0-9_/+]+# #og;
 194         print DESCR "$plain_description\n";
 195         $descriptions_db{$i} = $descriptions[$i];
 196 }
 197 close DESCR;
 198 untie %descriptions_db;
 199
 200 # package names stuff:
 201 for my $pkg (keys %package_names) {
 202         for (my $i=0;$i<length($pkg)-1;$i++) {
 203                 my $before = substr($pkg, 0, $i);
 204                 my $after = substr($pkg, $i);
 205                 $before = "^" if $before eq ""; # otherwise split doesn't work properly
 206                 $package_postfixes{$after} .= "$before\0";
 207         }
 208 }
 209 my %package_postfixes_db;
 210 tie %package_postfixes_db, "DB_File", "$DBDIR/package_postfixes.db.new",
 211         O_RDWR|O_CREAT, 0666, $DB_BTREE
 212         or die "Error creating DB: $!";
 213 while (my ($k, $v) = each(%package_postfixes)) {
 214         $v =~ s/.$//s;
 215         my $nr = $v;
 216         $nr =~ s/[^\000]//g;
 217         $nr = length($nr) + 1; # < number of hits
 218         if ($nr > $MAX_PACKAGE_POSTFIXES) {
 219                 $v = "\001" . $nr;
 220         }
 221         $package_postfixes_db{$k} = $v;
 222 }
 223 untie %package_postfixes_db;
 224
 225 store \%sections, "$DBDIR/sections.info";
 226 store \%subsections, "$DBDIR/subsections.info";
 227 store \%priorities, "$DBDIR/priorities.info";
 228
 229 rename("$DBDIR/packages_small.db.new", "$DBDIR/packages_small.db");
 230 rename("$DBDIR/sources_packages.db.new", "$DBDIR/sources_packages.db");
 231 for my $suite (@SUITES) {
 232         rename("$DBDIR/packages_all_$suite.db.new",
 233                "$DBDIR/packages_all_$suite.db");
 234 }
 235 rename("$DBDIR/packages_descriptions.db.new",
 236        "$DBDIR/packages_descriptions.db");
 237 rename("$DBDIR/descriptions_packages.db.new",
 238        "$DBDIR/descriptions_packages.db");
 239 rename("$DBDIR/descriptions.txt.new", "$DBDIR/descriptions.txt");
 240 rename("$DBDIR/descriptions.db.new", "$DBDIR/descriptions.db");
 241 rename("$DBDIR/package_postfixes.db.new", "$DBDIR/package_postfixes.db");