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 # Copyright (C) 2006  Jeroen van Wolffelaar <jeroen@wolffelaar.nl>
   6 # Copyright (C) 2006-2007 Frank Lichtenheld <frank@lichtenheld.de>
   7 #
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21
  22 use strict;
  23 use warnings;
  24 use lib './lib';
  25
  26 $| = 1;
  27
  28 my $what = $ARGV[0] ? "non-free" : "*";
  29 # max. distinct results for a given package postfix
  30 my $MAX_PACKAGE_POSTFIXES = 100;
  31
  32 use DB_File;
  33 use Storable;
  34 use File::Path;
  35 use Digest::MD5;
  36 use Deb::Versions;
  37 use Lingua::Stem v0.82;
  38 use Search::Xapian;
  39 use Packages::Config qw( $TOPDIR $DBDIR @ARCHIVES @SUITES );
  40 &Packages::Config::init( './' );
  41 my %packages_small = ();
  42 my %virtual_packages = ();
  43 my %package_names = ();
  44 my %package_postfixes = ();
  45 my %sources_packages = ();
  46 my %descriptions = ();
  47 my @descriptions = ("we count lines one-based\000");
  48 my %packages_descriptions = ();
  49 my %descriptions_packages = ();
  50
  51 my %sections = ();
  52 my %subsections = ();
  53 my %priorities = ();
  54
  55 $/ = "";
  56
  57 -d $DBDIR || mkpath( $DBDIR );
  58 -d "$DBDIR/xapian.new" && rmtree("$DBDIR/xapian.new");
  59 -d "$DBDIR/xapian.old" && rmtree("$DBDIR/xapian.old");
  60 mkpath( "$DBDIR/xapian.new" );
  61
  62 for my $suite (@SUITES) {
  63     my %package_names_suite = ();
  64     my %packages_all_db;
  65     tie %packages_all_db, "DB_File", "$DBDIR/packages_all_$suite.db.new",
  66             O_RDWR|O_CREAT, 0666, $DB_BTREE
  67             or die "Error creating DB: $!";
  68
  69     for my $archive (@ARCHIVES) {
  70         print "Reading $archive/$suite...\n";
  71         if (!-d "$TOPDIR/archive/$archive/$suite/") {
  72                 print "\tseems not to exist, skipping...\n";
  73                 next;
  74         }
  75         open PKG, "zcat $TOPDIR/archive/$archive/$suite/$what/{,debian-installer/}binary-*/Packages.gz|";
  76         while (<PKG>) {
  77                 next if /^\s*$/;
  78                 my $data = "";
  79                 my %data = ();
  80                 chomp;
  81                 s/\n /\377/g;
  82                 while (/^(\S+):\s*(.*)\s*$/mg) {
  83                         my ($key, $value) = ($1, $2);
  84                         $value =~ s/\377/\n /g;
  85                         $key =~ tr [A-Z] [a-z];
  86                         $data{$key} = $value;
  87                 }
  88                 # Skip double package
  89                 next if exists($packages_all_db{"$data{'package'} $data{'architecture'} $data{'version'}"});
  90                 # Skip arch:all for amd64 & debports, any non-redundancy is
  91                 # usually a bug anyway
  92                 next if ($archive eq 'amd64' or $archive eq 'debports')
  93                     and $data{architecture} eq 'all';
  94
  95                 if ($data{'provides'}) {
  96                     foreach (split /\s*,\s*/, $data{'provides'}) {
  97                         $virtual_packages{$_}{$suite}{$data{'package'}}++;
  98                         $packages_small{$_} ||= {};
  99                     }
 100                 }
 101                 $package_names{$data{'package'}} = 1;
 102                 $package_names_suite{$data{'package'}} = 1;
 103                 my $src = $data{'package'};
 104                 my $src_version = '';
 105                 if ($data{'source'}) {
 106                         $src = $data{'source'};
 107                         $src =~ s/\s+.*//o; # strip version info
 108                 }
 109                 $data{'source'} = $src;
 110
 111                 # expand tags like devel::{lang:c,lang:c++}
 112                 if ($data{'tag'} && $data{'tag'} =~ /\{/) {
 113                     my @complete_tags = split(/, /, $data{'tag'});
 114                     my @tags;
 115                     foreach (@complete_tags) {
 116                         my ($facet, $tag) = split( /::/, $_, 2);
 117                         if ($tag =~ s/^\{(.+)\}$/$1/) {
 118                             foreach (split( /,/, $tag )) {
 119                                 push @tags, "${facet}::$_";
 120                             }
 121                         } else {
 122                             push @tags, "${facet}::$tag";
 123                         }
 124                     }
 125                     my $old = $data{tag};
 126                     $data{'tag'} = join ", ", @tags;
 127                 }
 128
 129                 # we add some additional data here
 130                 my $descr = "$data{'description'}\000$data{'package'}\000"
 131                     .($data{'tag'}||'');
 132                 my $sdescr = $data{'description'};
 133                 $sdescr =~ s/\n.*//os;
 134                 my $did = undef;
 135                 if (exists($descriptions{$descr})) {
 136                         $did  = $descriptions{$descr};
 137                 } else {
 138                         $did = 1 + $#descriptions;
 139                         $descriptions[$did] = $descr;
 140                         $descriptions{$descr} = $did;
 141                 }
 142                 $data{'description-md5'} = Digest::MD5::md5_hex($data{'description'}, "\n");
 143                 $data{'description'} = $did;
 144                 $packages_descriptions{"$data{'package'} $data{'version'} $data{'architecture'}"} = $did;
 145                 $descriptions_packages{$did} .=
 146                         "$data{'package'} $data{'version'} $data{'architecture'}\000";
 147
 148                 my $section = 'main';
 149                 my $subsection = $data{section} || '-';
 150                 if ($data{section} && ($data{section} =~ m=/=o)) {
 151                     ($section, $subsection) = split m=/=o, $data{section}, 2;
 152                 }
 153                 $data{'section'} = $section;
 154                 $data{'subsection'} = $subsection;
 155                 $data{'priority'} ||= '-';
 156                 $sections{$suite}{$section}++;
 157                 $subsections{$suite}{$subsection}++;
 158                 $priorities{$suite}{$data{priority}}++;
 159                 my $pkgitem = "$archive $suite $data{'architecture'} ".
 160                         "$section $subsection $data{'priority'} $data{'version'} $data{'description-md5'} $sdescr\0";
 161                 my $previtem = ($packages_small{$data{'package'}}{$suite}{$data{'architecture'}}
 162                     ||= $pkgitem);
 163                 $packages_small{$data{'package'}}{$suite}{$data{'architecture'}} = $pkgitem
 164                     if version_cmp($data{'version'}, (split /\s/o, $previtem)[6]) > 0;
 165                 $previtem = ($packages_small{$data{'package'}}{$suite}{'any'}
 166                     ||= $pkgitem);
 167                 $packages_small{$data{'package'}}{$suite}{'any'} = $pkgitem
 168                     if version_cmp($data{'version'}, (split /\s/o, $previtem)[6]) > 0;
 169                 $sources_packages{$src} .=
 170                         "$archive $suite $data{'package'} $data{'version'} $data{'architecture'}\000";
 171                 $data{archive} = $archive;
 172                 while (my ($key, $value) = each (%data)) {
 173                         next if $key eq 'package' or $key eq 'version' or $key eq 'architecture'
 174                                 or $key eq 'maintainer';
 175                         print STDERR "WARN: $key ($suite/$archive/$data{package}/$data{architecture}\n" unless defined $value;
 176                         $data .= "$key\00$value\00";
 177                 }
 178                 $data =~ s/.$//s;
 179                 $packages_all_db{"$data{'package'} $data{'architecture'} $data{'version'}"}
 180                         = $data;
 181         }
 182     }
 183
 184     open NAMES, '>', "$DBDIR/package_names_$suite.txt.new"
 185         or die "Error creating package names list: $!";
 186     foreach (sort keys %package_names_suite) {
 187         print NAMES "$_\n";
 188     }
 189     close NAMES;
 190
 191     untie %packages_all_db;
 192 }
 193
 194 print "Writing databases...\n";
 195 my %packages_small_db;
 196 tie %packages_small_db, "DB_File", "$DBDIR/packages_small.db.new",
 197         O_RDWR|O_CREAT, 0666, $DB_BTREE
 198         or die "Error creating DB: $!";
 199 while (my ($pkg, $v) = each(%packages_small)) {
 200         my ($res1, $res2, $res3) = ("", "", "");
 201         while (my ($suite, $v2) = each %$v) {
 202             $res2 .= $v2->{'any'};
 203             while (my ($arch, $v3) = each %$v2) {
 204                 next if $arch eq 'any' or $v3 eq $v2->{'any'};
 205                 $res3 .= $v3;
 206             }
 207         }
 208
 209         if (exists $virtual_packages{$pkg}) {
 210                 while (my ($suite, $v2) = each %{$virtual_packages{$pkg}}) {
 211                         $res1 .= "$suite\01".(join ' ', keys %$v2)."\01";
 212                 }
 213         } else {
 214                 $res1 .= "-\01-\01";
 215         }
 216         $res1 =~ s/.$/\0/s;
 217
 218         my $res = "$res1$res2$res3";
 219         $res =~ s/.$//s;
 220         $packages_small_db{$pkg} = $res;
 221 }
 222 untie %packages_small_db;
 223
 224 my %sources_packages_db;
 225 tie %sources_packages_db, "DB_File", "$DBDIR/sources_packages.db.new",
 226         O_RDWR|O_CREAT, 0666, $DB_BTREE
 227         or die "Error creating DB: $!";
 228 while (my ($k, $v) = each(%sources_packages)) {
 229         $v =~ s/.$//s;
 230         $sources_packages_db{$k} = $v;
 231 }
 232 untie %sources_packages_db;
 233
 234 my %packages_descriptions_db;
 235 tie %packages_descriptions_db, "DB_File", "$DBDIR/packages_descriptions.db.new",
 236         O_RDWR|O_CREAT, 0666, $DB_BTREE
 237         or die "Error creating DB: $!";
 238 while (my ($k, $v) = each(%packages_descriptions)) {
 239         $packages_descriptions_db{$k} = $v;
 240 }
 241 untie %packages_descriptions_db;
 242
 243 my %descriptions_packages_db;
 244 tie %descriptions_packages_db, "DB_File", "$DBDIR/descriptions_packages.db.new",
 245         O_RDWR|O_CREAT, 0666, $DB_BTREE
 246         or die "Error creating DB: $!";
 247 while (my ($k, $v) = each(%descriptions_packages)) {
 248         $v =~ s/.$//s;
 249         $descriptions_packages_db{$k} = $v;
 250 }
 251 untie %descriptions_packages_db;
 252
 253 my $stemmer = Lingua::Stem->new();
 254 $stemmer->stem_caching({ -level => 2 });
 255 my $xapian_db;
 256 eval {
 257     $xapian_db = Search::Xapian::WritableDatabase->new("$DBDIR/xapian.new",
 258                                                        Search::Xapian::DB_CREATE_OR_OPEN)
 259         or die "can't create write-able db object: $!\n";
 260 };
 261 die $@ if $@;
 262 my %descriptions_db;
 263 tie %descriptions_db, "DB_File", "$DBDIR/descriptions.db.new",
 264         O_RDWR|O_CREAT, 0666, $DB_BTREE
 265         or die "Error creating DB: $!";
 266 print "Index $#descriptions descriptions\n";
 267 for (my $i=1; $i<= $#descriptions; $i++) {
 268         # strip away additional data
 269         my ($only_desc, $pkg, $tags) = split /\000/o, $descriptions[$i], 3;
 270         my $orig_desc = $only_desc;
 271 # WARNING: This needs to correspond with what happens in
 272 # Packages/Search.pm:do_xapian_search
 273         $only_desc =~ s#[^\w/+]+# #og;
 274
 275         #XAPIAN
 276         eval {
 277             my @words = split /\s+/, $only_desc;
 278             unshift @words, $pkg;
 279
 280             my $doc = Search::Xapian::Document->new()
 281                 or die "can't create doc object for $i: $!\n";
 282             if ($doc->set_data($i)){
 283                 warn "can't set_data in doc object for $i: $!\n";
 284             }
 285
 286             # package with prefix
 287             if ($doc->add_term("P$pkg")) {
 288                 warn "can't add term P$pkg: $!\n";
 289             }
 290             # description, unstemmed with positional info
 291             for my $j (0 .. (@words-1)) {
 292                 next if $words[$j] =~ /^\s*$/o;
 293                 if ($doc->add_posting($words[$j], $j)) {
 294                     warn "can't add posting $words[$j] at $j: $!\n";
 295                 }
 296             }
 297             # description, stemmed
 298             my $stem_words = $stemmer->stem( \@words );
 299             foreach my $w (@$stem_words) {
 300                 next if $w =~ /^\s*$/o;
 301                 if ($doc->add_term($w)) {
 302                     warn "can't add term $w: $!\n";
 303                 }
 304             }
 305             if ($tags) {
 306                 foreach my $t (split m/, /, $tags) {
 307                     if ($doc->add_term($t)) {
 308                         warn "can't add term $t: $!\n";
 309                     }
 310                 }
 311             }
 312
 313             $xapian_db->add_document($doc)
 314                 or warn "failed to add document: $i\n";
 315         };
 316         die $@ if $@;
 317
 318         $descriptions_db{$i} = $orig_desc;
 319 }
 320 untie %descriptions_db;
 321 $xapian_db->flush;
 322 undef $xapian_db;
 323
 324 # package names stuff:
 325 for my $pkg (keys %package_names) {
 326         for (my $i=0;$i<length($pkg)-1;$i++) {
 327                 my $before = substr($pkg, 0, $i);
 328                 my $after = substr($pkg, $i);
 329                 $before = "^" if $before eq ""; # otherwise split doesn't work properly
 330                 $package_postfixes{$after} .= "$before\0";
 331         }
 332 }
 333 my %package_postfixes_db;
 334 tie %package_postfixes_db, "DB_File", "$DBDIR/package_postfixes.db.new",
 335         O_RDWR|O_CREAT, 0666, $DB_BTREE
 336         or die "Error creating DB: $!";
 337 while (my ($k, $v) = each(%package_postfixes)) {
 338         $v =~ s/.$//s;
 339         my $nr = $v;
 340         $nr =~ s/[^\000]//g;
 341         $nr = length($nr) + 1; # < number of hits
 342         if ($nr > $MAX_PACKAGE_POSTFIXES) {
 343                 $v = "\001" . $nr;
 344         }
 345         $package_postfixes_db{$k} = $v;
 346 }
 347 untie %package_postfixes_db;
 348
 349 store \%sections, "$DBDIR/sections.info";
 350 store \%subsections, "$DBDIR/subsections.info";
 351 store \%priorities, "$DBDIR/priorities.info";
 352
 353 rename("$DBDIR/packages_small.db.new", "$DBDIR/packages_small.db");
 354 rename("$DBDIR/sources_packages.db.new", "$DBDIR/sources_packages.db");
 355 for my $suite (@SUITES) {
 356         rename("$DBDIR/packages_all_$suite.db.new",
 357                "$DBDIR/packages_all_$suite.db");
 358         rename("$DBDIR/package_names_$suite.txt.new",
 359                "$DBDIR/package_names_$suite.txt");
 360 }
 361 rename("$DBDIR/xapian", "$DBDIR/xapian.old");
 362 rename("$DBDIR/xapian.new","$DBDIR/xapian");
 363 rmtree("$DBDIR/xapian.old");
 364 rename("$DBDIR/packages_descriptions.db.new",
 365        "$DBDIR/packages_descriptions.db");
 366 rename("$DBDIR/descriptions_packages.db.new",
 367        "$DBDIR/descriptions_packages.db");
 368 rename("$DBDIR/descriptions.db.new", "$DBDIR/descriptions.db");
 369 rename("$DBDIR/package_postfixes.db.new", "$DBDIR/package_postfixes.db");