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