X-Git-Url: https://git.deb.at/?a=blobdiff_plain;ds=sidebyside;f=bin%2Fparse-contents;h=12b7ed824a40dbb933d0bc7b7a10e675153b9081;hb=56d4b3ed57e20359e5ea46feabb850cf4a94caf2;hp=31b0f81aade65e928ff28c833b0c7cf314d840d5;hpb=ff980834e888966effaa2f2235d18e788006b5aa;p=deb%2Fpackages.git diff --git a/bin/parse-contents b/bin/parse-contents index 31b0f81..12b7ed8 100755 --- a/bin/parse-contents +++ b/bin/parse-contents @@ -22,66 +22,158 @@ use strict; use lib './lib'; +$| = 1; + +# Important, we want sorting and such to happen like in the C locale: binary, +# without any fancy collation. FIXME: is this actually adequate? +$ENV{"LC_ALL"} = 'C'; + +my $what = $ARGV[0] ? "head -10000|" : ""; + +# More RAM vs more disk I/O tradeoff parameters, does not change +# functionality. True will always use more RAM at the benefit of less +# temporary files, and is adviced when possible +my $SORT_REVERSE_CONCURRENTLY = 1; + use DB_File; use Storable; -use Packages::Config qw( $TOPDIR $DBDIR @ARCHIVES @SUITES ); +use File::Path; +use Packages::Config qw( $TOPDIR $DBDIR @ARCHIVES @SUITES @ARCHITECTURES ); &Packages::Config::init( './' ); -my %packages_contents = (); -my %file_reverse = (); -my @archives =( 'us'); #@ARCHIVES -my @suites = ('stable');#@SUITES +my @archives =( 'us'); #@ARCHIVES # NOT-IMPLEMENTED-YET +my @suites = @SUITES; +my @archs = @ARCHITECTURES; + +$DBDIR .= "/contents"; +-d $DBDIR || mkpath( $DBDIR ); for my $archive (@archives) { for my $suite (@suites) { - print "Reading $archive/$suite/i386...\n"; - open CONT, "zcat /org/ftp.debian.org/ftp/dists/stable/Contents-i386.gz|"; - while (1) {$_ = ;last if /^FILE/mo;} + for my $arch (@archs) { + + my $filename = "$TOPDIR/archive/$archive/$suite/Contents-$arch.gz"; + my $filelist_db = "$DBDIR/filelists_${suite}_${arch}.db"; + next unless -f $filename; + my $ftime = (stat $filename)[10]; # Note: ctime, because mtime is set back via rsync + my $dbtime = (stat $filelist_db)[9]; + next if defined $dbtime and $dbtime > $ftime; + print "Reading $archive/$suite/$arch...\n"; + + my %packages_contents = (); + my %packages_contents_nr = (); + my %packages_contents_lastword = (); + + my $extra = ""; + $extra = "|sort" if $SORT_REVERSE_CONCURRENTLY; + + open REVERSED, "$extra>$DBDIR/reverse.tmp" + or die "Failed to open output reverse file: $!"; + + open CONT, "zcat $filename|$what" + or die $!; + while () {last if /^FILE/mo;} while () { my $data = ""; my %data = (); chomp; - print "Doing line $.\n" if $. % 10000 == 0; - /^(\S+)\s+(\S+)/; + print "Doing line ".($./1000)."k (out of approx 1.5M)\n" if $. % 250000 == 0; + /^(.+?)\s+(\S+)$/o; my ($file, $value) = ($1, $2); - $value =~ s#[^,/]+/##g; + $value =~ s#[^,/]+/##og; my @packages = split /,/, $value; for (@packages) { - #$packages_contents{$_} .= "$_\0"; + $packages_contents_nr{$_}++; + my $lw = $packages_contents_lastword{$_} || "\0"; + my $i=0; + while (substr($file,$i,1) eq substr($lw,$i++,1)) {} + $i--; + $i = 255 if $i > 255; + $packages_contents{$_} .= pack "CC/a*", ($i, substr($file, $i)); + $packages_contents_lastword{$_} = "$file\0"; } # Searches are case-insensitive $file =~ tr [A-Z] [a-z]; - $file_reverse{reverse $file} = join "\0", @packages; + print REVERSED (reverse $file)."\0".(join ":$arch\0", @packages).":$arch\n"; } + close CONT; + close REVERSED; + + print "Sorting reverse list if needed\n"; + system("cd $DBDIR && sort reverse.tmp > reverse.sorted && mv reverse.{sorted,tmp}") == 0 + or die "Failed to sort reverse" + unless $SORT_REVERSE_CONCURRENTLY; + + print "Writing filelist db\n"; + tie my %packages_contents_db, "DB_File", "$filelist_db.new", + O_RDWR|O_CREAT, 0666, $DB_BTREE + or die "Error creating DB: $!"; + while (my ($k, $v) = each(%packages_contents)) { + $packages_contents_db{$k} = (pack "L", $packages_contents_nr{$k}) + . $v; + } + untie %packages_contents_db; + + rename("$DBDIR/reverse.tmp", "$DBDIR/reverse_${suite}_${arch}.txt"); + + rename("$filelist_db.new", $filelist_db); + system("ln -sf $filelist_db $DBDIR/filelists_${suite}_all.db") == 0 + or die "Oops"; + } + + + my $go = 0; + my $suite_mtime = (stat "$DBDIR/reverse_$suite.db")[9]; + for my $file (glob "$DBDIR/reverse_${suite}_*.txt") { + $go = 1 if not defined $suite_mtime + or $suite_mtime < (stat $file)[9]; + } + next unless $go; + + print "Merging reverse path lists for ${suite}...\n"; + + open MERGED, "sort -m $DBDIR/reverse_${suite}_*.txt |" + or die "Failed to open merged list"; + open FILENAMES, "> $DBDIR/filenames_$suite.txt.new" + or die "Failed to open filenames list"; + tie my %reverse_path_db, "DB_File", "$DBDIR/reverse_${suite}.db.new", + O_RDWR|O_CREAT, 0666, $DB_BTREE + or die "Error creating DB: $!"; + + my $lastpath = ""; + my $lastfile = ""; + my @matches = (); + while () { + print "Doing line ".($./1000000)."M (out of approx. 16M)\n" if $. % 1000000 == 0; + chomp; + my @line = split /\0/o, $_; + my $revpath = shift @line; + if ($revpath ne $lastpath) { + # Wrap: Do useful stuff with this ($lastpath, @matches) + $reverse_path_db{$lastpath} = join "\0", @matches if $lastpath ne ""; + $lastpath =~ s,/.*,,o; + if ($lastfile ne $lastpath) { + $lastfile = $lastpath; + print FILENAMES (reverse $lastfile)."\n"; + } + # + $lastpath = $revpath; + @matches = @line; + next; + } + push @matches, @line + } + # Note: do useful stuff here too, for out last entry. Maybe prevent this by + # adding a fake ultimate entry? + $reverse_path_db{$lastpath} = join "\0", @matches; + + untie %reverse_path_db; + close FILENAMES; + close MERGED; + + rename "$DBDIR/filenames_$suite.txt.new", "$DBDIR/filenames_$suite.txt"; + rename "$DBDIR/reverse_$suite.db.new", "$DBDIR/reverse_$suite.db"; }} -print "Writing databases...\n"; -my %packages_contents_db; -tie %packages_contents_db, "DB_File", "packages_contents.db.new", - O_RDWR|O_CREAT, 0666, $DB_BTREE - or die "Error creating DB: $!"; -while (my ($k, $v) = each(%packages_contents)) { - $v =~ s/.$//s; - $packages_contents_db{$k} = $v; -} -untie %packages_contents_db; - -my %file_reverse_db; -tie %file_reverse_db, "DB_File", "$DBDIR/file_reverse.db.new", - O_RDWR|O_CREAT, 0666, $DB_BTREE - or die "Error creating DB: $!"; -while (my ($x, $y) = each(%file_reverse)) { -# $v =~ s/.$//s; -# my $nr = $v; -# $nr =~ s/[^\000]//g; -# $nr = length($nr) + 1; # < number of hits -# if ($nr > $MAX_file_reverse) { -# $v = "\001" . $nr; -# } - $file_reverse_db{$x} = $y; -} -untie %file_reverse_db; - -#rename("packages_contents.db.new", "packages_contents.db"); -rename("$DBDIR/file_reverse.db.new", "$DBDIR/file_reverse.db"); +# vim: set ts=4