- remove obsolete stuff4.5.2

- move packdrake.pm in its own directory to make MakeMaker happy

1 files changed, 0 insertions, 660 deletions

diff --git a/rpmtools.pm b/rpmtools.pm
deleted file mode 100644
index 77f1988..0000000
--- a/rpmtools.pm
+++ /dev/null
@@ -1,660 +0,0 @@
-package rpmtools;
-
-use strict;
-use vars qw($VERSION @ISA %compat_arch);
-
-require DynaLoader;
-
-@ISA = qw(DynaLoader);
-$VERSION = '4.4';
-
-bootstrap rpmtools $VERSION;
-
-=head1 NAME
-
-rpmtools - Mandrake perl tools to handle rpm files and hdlist files
-
-=head1 SYNOPSYS
-
-    require rpmtools;
-
-    my $params = new rpmtools;
-
-    $params->read_hdlists("/export/Mandrake/base/hdlist.cz",
-                          "/export/Mandrake/base/hdlist2.cz");
-    $params->read_rpms("/RPMS/rpmtools-2.1-5mdk.i586.rpm");
-    $params->compute_depslist();
-
-    my $db = $params->db_open("");
-    $params->db_traverse_tag($db,
-                             "name", \@names,
-                             [ qw(name version release) ],
-                             sub {
-        my ($p) = @_;
-        print "$p->{name}-$p->{version}-$p->{release}\n";
-    });
-    $params->db_traverse($db,
-                         [ qw(name version release) ],
-                         sub {
-        my ($p) = @_;
-        print "$p->{name}-$p->{version}-$p->{release}\n";
-    });
-    $params->db_close($db);
-
-    $params->read_depslist(\*STDIN);
-    $params->write_depslist(\*STDOUT);
-
-    rpmtools::version_compare("1.0.23", "1.0.4");
-
-=head1 DESCRIPTION
-
-C<rpmtools> extend perl to manipulate hdlist file used by
-Linux-Mandrake distribution to compute dependency file.
-
-=head1 SEE ALSO
-
-parsehdlist command is a simple hdlist parser that allow interactive mode
-use by DrakX upgrade algorithms.
-
-=head1 COPYRIGHT
-
-Copyright (C) 2000 MandrakeSoft <fpons@mandrakesoft.com>
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-=cut
-
-%compat_arch = ( #- compatibilty arch mapping.
-		 'noarch'  => undef,
-		 'i386'    => 'noarch',
-		 'i486'    => 'i386',
-		 'i586'    => 'i486',
-		 'i686'    => 'i586',
-		 'i786'    => 'i686',
-		 'k6'      => 'i586',
-		 'k7'      => 'k6',
-		 'k8'      => 'k7',
-		 'ia32'    => 'i386',
-		 'ia64'    => 'noarch',
-		 'ppc'     => 'noarch',
-		 'alpha'   => 'noarch',
-		 'sparc'   => 'noarch',
-		 'sparc32' => 'sparc',
-		 'sparc64' => 'sparc32',
-	       );
-
-#- build an empty params struct that can be used to compute dependencies.
-sub new {
-    my ($class, @tags) = @_;
-    my %tags; @tags{@_} = ();
-    bless {
-	   flags         => [ qw(name version release size arch serial group requires provides),
-			      grep { exists $tags{$_} } qw(sense files obsoletes conflicts conffiles sourcerpm) ],
-	   info          => {},
-	   depslist      => [],
-	   provides      => {},
-	  }, $class;
-}
-
-#- read one or more hdlist files, use packdrake for decompression.
-sub read_hdlists {
-    my ($params, @hdlists) = @_;
-    my @names;
-
-    foreach my $hdlist (@hdlists) {
-	local (*I, *O); pipe I, O;
-	if (my $pid = fork()) {
-	    close O;
-
-	    push @names, rpmtools::_parse_(fileno *I, $params->{flags}, $params->{info}, $params->{provides});
-
-	    close I;
-	    waitpid $pid, 0;
-	} else {
-	    close I;
-	    open STDIN, "<$hdlist" or die "unable to open archive $hdlist";
-	    open STDOUT, ">&O" or die "unable to redirect output";
-	    open STDERR, ">/dev/null" or die "unable to open /dev/null";
-
-	    require packdrake;
-	    my $packer = new packdrake;
-
-	    $packer->read_toc_trailer($hdlist);
-
-	    exec (($ENV{LD_LOADER} ? ($ENV{LD_LOADER}) : ()), split " ", $packer->{uncompress});
-
-	    die "unable to cat the archive with $packer->{uncompress}";
-	}
-    }
-    @names;
-}
-
-#- build the synthesis file (normally used by urpmi only)
-#- for all package not currently with computed dependencies.
-sub write_synthesis_hdlist {
-    my ($params, $FILE) = @_;
-
-    #- avoid writing already present infos with id.
-    foreach my $pkg (grep { ! exists $_->{id} } values %{$params->{info}}) {
-	foreach (qw(provides requires conflicts obsoletes)) {
-	    @{$pkg->{$_} || []} and print $FILE join('@', $pkg->{name}, $_, @{$pkg->{$_} || []}) . "\n";
-	}
-	print $FILE join('@',
-			 $pkg->{name}, 'info', "$pkg->{name}-$pkg->{version}-$pkg->{release}.$pkg->{arch}",
-			 $pkg->{serial} || 0, $pkg->{size} || 0, $pkg->{group}, $pkg->{file} ? ($pkg->{file}) : ()). "\n";
-    }
-}
-
-#- build an hdlist from a list of files.
-sub build_hdlist {
-    my ($params, $noclean, $ratio, $dir, $hdlist, @rpms) = @_;
-    my %names;
-
-    #- build a working directory which will hold rpm headers.
-    $dir ||= '.';
-    -d $dir or mkdir $dir, 0755 or die "cannot create directory $dir\n";
-
-    foreach (@rpms) {
-	my ($key) = /([^\/]*)\.rpm$/ or next; #- get rpm filename.
-
-	unless (-s "$dir/$key") {
-	    system("$ENV{LD_LOADER} rpm2header '$_' > '$dir/$key'");
-	    $? == 0 or unlink("$dir/$key"), die "bad rpm $_\n";
-	}
-	-s "$dir/$key" or unlink("$dir/$key"), die "bad rpm $_\n";
-
-	my ($name, $version, $release, $arch) = $key =~ /(.*)-([^-]*)-([^-]*)\.([^\.]*)$/;
-	my ($realname, $realversion, $realrelease, $realarch) = `$ENV{LD_LOADER} parsehdlist --raw --name '$dir/$key'` =~
-	  /:name:([^\:]*)-([^\:\-]*)-([^\:\-]*)\.([^\-\.\:\s]*)(?::.*\.rpm)?$/;
-	unless (length($name) && length($version) && length($release) && length($arch) &&
-		$name eq $realname && $version eq $realversion && $release eq $realrelease && $arch eq $realarch) {
-	    my $newkey = "$realname-$realversion-$realrelease.$realarch:$key";
-	    symlink "$dir/$key", "$dir/$newkey" unless -e "$newkey";
-	    $key = $newkey;
-	}
-	push @{$names{$realname} ||= []}, $key;
-    }
-
-    #- compression ratio are not very high, sample for cooker
-    #- gives the following (main only and cache fed up):
-    #- ratio compression_time  size
-    #-   9       21.5 sec     8.10Mb   -> good for installation CD
-    #-   6       10.7 sec     8.15Mb
-    #-   5        9.5 sec     8.20Mb
-    #-   4        8.6 sec     8.30Mb   -> good for urpmi
-    #-   3        7.6 sec     8.60Mb
-    open B, "| $ENV{LD_LOADER} packdrake -b${ratio}ds '$hdlist' '$dir' 400000";
-    foreach (@{$params->{depslist}}) {
-	if (my $keys = delete $names{$_->{name}}) {
-	    foreach (@$keys) {
-		print B "$_\n";
-	    }
-	}
-    }
-    foreach (values %names) {
-	foreach (@$_) {
-	    print B "$_\n";
-	}
-    }
-    close B or die "packdrake failed\n";
-
-    system(($ENV{LD_LOADER} ? ($ENV{LD_LOADER}) : ()), "rm", "-rf", $dir) unless $dir eq '.' || $noclean;
-}
-
-#- read one or more rpm files.
-sub read_rpms {
-    my ($params, @rpms) = @_;
-
-    map { rpmtools::_parse_($_, $params->{flags}, $params->{info}, $params->{provides}) } @rpms;
-}
-
-#- allocate id for newly entered value.
-#- this is no more necessary to compute_depslist on them (and impossible)
-sub compute_id {
-    my ($params) = @_;
-
-    #- avoid recomputing already present infos, take care not to modify
-    #- existing entries, as the array here is used instead of values of infos.
-    my @info = grep { ! exists $_->{id} } values %{$params->{info}};
-
-    #- speed up the search by giving a provide from all packages.
-    #- and remove all dobles for each one !
-    foreach (@info) {
-	$params->{provides}{$_->{name}}{"$_->{name}-$_->{version}-$_->{release}.$_->{arch}"} = undef;
-    }
-
-    #- give an id to each packages, start from number of package already
-    #- registered in depslist.
-    my $global_id = scalar @{$params->{depslist}};
-    foreach (sort { package_name_compare($a->{name}, $b->{name}) } @info) {
-	$_->{id} = $global_id++;
-	push @{$params->{depslist}}, $_;
-    }
-    1;
-}
-
-#- compute dependencies, result in stored in info values of params.
-#- operations are incremental, it is possible to read just one hdlist, compute
-#- dependencies and read another hdlist, and again.
-sub compute_depslist {
-    my ($params) = @_;
-
-    #- avoid recomputing already present infos, take care not to modify
-    #- existing entries, as the array here is used instead of values of infos.
-    my @info = grep { ! exists $_->{id} } values %{$params->{info}};
-
-    #- speed up the search by giving a provide from all packages.
-    #- and remove all dobles for each one !
-    foreach (@info) {
-	$params->{provides}{$_->{name}}{"$_->{name}-$_->{version}-$_->{release}.$_->{arch}"} = undef;
-    }
-
-    #- take into account in which hdlist a package has been found.
-    #- this can be done by an incremental take into account generation
-    #- of depslist.ordered part corresponding to the hdlist.
-    #- compute closed requires, do not take into account choices.
-    foreach (@info) {
-	my %required_packages;
-	my @required_packages;
-	my %requires; @requires{@{$_->{requires} || []}} = ();
-	my @requires = keys %requires;
-
-	while (my $req = shift @requires) {
-	    $req =~ /^basesystem/ and next; #- never need to requires basesystem directly as always required! what a speed up!
-	    ref $req or $req = ($params->{info}{$req} && [ $req ] ||
-				$params->{provides}{$req} && [ keys %{$params->{provides}{$req}} ] ||
-				[ ($req !~ /NOTFOUND_/ && "NOTFOUND_") . $req ]);
-	    if (@$req > 1) {
-		#- this is a choice, no closure need to be done here.
-		exists $requires{$req} or push @required_packages, $req;
-		$requires{$req} = undef;
-	    } else {
-		#- this could be nothing if the provides is a file not found.
-		#- and this has been fixed above.
-		foreach (@$req) {
-		    my $info = $params->{info}{$_};
-		    $required_packages{$_} = undef; $info or next;
-		    if ($info->{deps} && !$info->{requires}) {
-			#- the package has been read from an ordered depslist file, and need
-			#- to rebuild its requires tags, so it can safely be used here.
-			my @rebuild_requires;
-			foreach (split ' ', $info->{deps}) {
-			    if (/\|/) {
-				push @rebuild_requires, [ map { $params->{depslist}[$_]{name} || $_ } split /\|/, $_ ];
-			    } else {
-				push @rebuild_requires, $params->{depslist}[$_]{name} || $_;
-			    }
-			}
-			$info->{requires} = \@rebuild_requires;
-		    }
-		    foreach (@{$info->{requires} || []}) {
-			unless (exists $requires{$_}) {
-			    $requires{$_} = undef;
-			    push @{ref $_ ? \@required_packages : \@requires}, $_;
-			}
-		    }
-		}
-	    }
-	}
-	unshift @required_packages, keys %required_packages;
-
-	delete $_->{requires}; #- affecting it directly make perl crazy, oops for rpmtools. TODO
-	$_->{requires} = \@required_packages;
-    }
-
-    #- sort packages, expand choices and closure again.
-    my %ordered;
-    foreach (@info) {
-	my %requires;
-	my @requires = ("$_->{name}-$_->{version}-$_->{release}.$_->{arch}");
-	while (my $dep = shift @requires) {
-	    foreach (@{$params->{info}{$dep} && $params->{info}{$dep}{requires} || []}) {
-		if (ref $_) {
-		    foreach (@$_) {
-			unless (exists $requires{$_}) {
-			    $requires{$_} = undef;
-			    push @requires, $_;
-			}
-		    }
-		} else {
-		    unless (exists $requires{$_}) {
-			$requires{$_} = undef;
-			push @requires, $_;
-		    }
-		}
-	    }
-	}
-
-	if ($_->{name} eq 'basesystem') {
-	    foreach (keys %requires) {
-		$ordered{$_} += 10001;
-	    }
-	} elsif ($_->{name} eq 'msec') {
-	    foreach (keys %requires) {
-		$ordered{$_} += 20001;
-	    }
-	} else {
-	    foreach (keys %requires) {
-		++$ordered{$_};
-	    }
-	}
-    }
-
-    #- some package should be sorted at the beginning.
-    my $fixed_weight = 10000;
-    foreach (qw(basesystem msec * locales filesystem setup glibc sash bash libtermcap2 termcap readline ldconfig)) {
-	foreach (keys %{$params->{provides}{$_} || {}}) {
-	    $ordered{$_} = $fixed_weight;
-	}
-	$fixed_weight += 10000;
-    }
-    foreach (grep { /locales-[a-zA-Z]/ } keys %ordered) {
-	$ordered{$_} = 35000;
-    }
-
-    #- compute base flag, consists of packages which are required without
-    #- choices of basesystem and are ALWAYS installed. these packages can
-    #- safely be removed from requires of others packages.
-    foreach (keys %{$params->{provides}{basesystem} || {}}) {
-	foreach (@{$params->{info}{$_}{requires}}) {
-	    ref $_ or $params->{info}{$_} and $params->{info}{$_}{base} = undef;
-	}
-    }
-
-    #- some package are always installed as base and can safely be marked as such.
-    foreach (qw(basesystem glibc kernel)) {
-	foreach (keys %{$params->{provides}{$_} || {}}) {
-	    $params->{info}{$_} and $params->{info}{$_}{base} = undef;
-	}
-    }
-
-    #- give an id to each packages, start from number of package already
-    #- registered in depslist.
-    my $global_id = scalar @{$params->{depslist}};
-    foreach (sort { ($ordered{"$b->{name}-$b->{version}-$b->{release}.$b->{arch}"} <=>
-		     $ordered{"$a->{name}-$a->{version}-$a->{release}.$a->{arch}"}) ||
-		       package_name_compare($a->{name}, $b->{name}) } @info) {
-	$_->{id} = $global_id++;
-    }
-
-    #- recompute requires to use packages id, drop any base packages or
-    #- reference of a package to itself.
-    foreach my $pkg (sort { $a->{id} <=> $b->{id} } @info) {
-	my ($id, $base, %requires_id, @requires_id);
-	foreach (@{$pkg->{requires}}) {
-	    if (ref $_) {
-		#- all choices are grouped together at the end of requires,
-		#- this allow computation of dropable choices.
-		my ($to_drop, @choices_base_id, @choices_id);
-		foreach (@$_) {
-		    my ($id, $base) = $params->{info}{$_} ? ($params->{info}{$_}{id}, exists $params->{info}{$_}{base}) : ($_, 0);
-		    $base and push @choices_base_id, $id;
-		    $base &&= ! exists $pkg->{base};
-		    $to_drop ||= $id == $pkg->{id} || $requires_id{$id} || $base;
-		    push @choices_id, $id;
-		}
-
-		#- package can safely be dropped as it will be selected in requires directly.
-		$to_drop and next;
-
-		#- if a base package is in a list, keep it instead of the choice.
-		if (@choices_base_id) {
-		    @choices_id = @choices_base_id;
-		    $base = 1;
-		}
-		if (@choices_id == 1) {
-		    $id = $choices_id[0];
-		} else {
-		    my $choices_key = join '|', sort { $a <=> $b } @choices_id;
-		    exists $requires_id{$choices_key} or push @requires_id, \@choices_id;
-		    $requires_id{$choices_key} = undef;
-		    next;
-		}
-	    } else {
-		($id, $base) = $params->{info}{$_} ? ($params->{info}{$_}{id}, exists $params->{info}{$_}{base}) : ($_, 0);
-	    }
-
-	    #- select individual package.
-	    $base &&= ! exists $pkg->{base};
-	    $requires_id{$id} = $_;
-	    $id == $pkg->{id} || $base or push @requires_id, $id;
-	}
-	#- cannot remove requires values as they are necessary for closure on incremental job.
-	$pkg->{deps} = join(' ', map { join '|', sort { $a <=> $b } @{ref $_ ? $_ : [$_]} } @requires_id);
-	push @{$params->{depslist}}, $pkg;
-    }
-    1;
-}
-
-#- read depslist.ordered file, as if it was computed internally.
-sub read_depslist {
-    my ($params, $FILE) = @_;
-    my $global_id = scalar @{$params->{depslist}};
-
-    local $_;
-    while (<$FILE>) {
-	chomp; /^\s*#/ and next;
-	my ($name, $version, $release, $arch, $serial, $size, $deps) =
-	  /^([^:\s]*)-([^:\-\s]+)-([^:\-\s]+)\.([^:\.\-\s]*)(?::(\d+)\S*)?\s+(\d+)\s*(.*)/;
-
-	#- store values here according to it.
-	push @{$params->{depslist}},
-	  $params->{info}{"$name-$version-$release.$arch"} = {
-							      name        => $name,
-							      version     => $version,
-							      release     => $release,
-							      arch        => $arch,
-							      $serial ? (serial      => $serial) : (),
-							      size        => $size,
-							      deps        => $deps,
-							      id          => $global_id++,
-							     };
-	#- this can be really usefull as there are no more hash on name directly,
-	#- but provides gives something quite interesting here.
-	$params->{provides}{$name}{"$name-$version-$release.$arch"} = undef;
-    }
-
-    #- compute base flag, consists of packages which are required without
-    #- choices of basesystem and are ALWAYS installed. these packages can
-    #- safely be removed from requires of others packages.
-    foreach (keys %{$params->{provides}{basesystem} || {}}) {
-	if ($params->{info}{$_} && ! exists $params->{info}{$_}{base}) {
-	    my @requires_id;
-	    foreach (split ' ', $params->{info}{$_}{deps}) {
-		/\|/ or push @requires_id, $_;
-	    }
-	    foreach ($params->{info}{$_}{id}, @requires_id) {
-		$params->{depslist}[$_] and $params->{depslist}[$_]{base} = undef;
-	    }
-	}
-    }
-    1;
-}
-
-#- write depslist.ordered file according to info in params.
-sub write_depslist {
-    my ($params, $FILE, $min, $max) = @_;
-
-    $min > 0 or $min = 0;
-    defined $max && $max < scalar(@{$params->{depslist} || []}) or $max = scalar(@{$params->{depslist} || []}) - 1;
-    $max >= $min or return;
-
-    for ($min..$max) {
-	my $pkg = $params->{depslist}[$_];
-	printf $FILE ("%s-%s-%s.%s%s %s %s\n",
-		      $pkg->{name}, $pkg->{version}, $pkg->{release}, $pkg->{arch},
-		      ($pkg->{serial} ? ":$pkg->{serial}" : ''), $pkg->{size} || 0, $pkg->{deps});
-    }
-    1;
-}
-
-#- fill params provides with files that can be used, it use the format for
-#- a provides file.
-sub read_provides_files {
-    my ($params, $FILE) = @_;
-
-    local $_;
-    while (<$FILE>) {
-	chomp;
-	my ($k, @v) = split '@';
-	$k =~ /^\// and $params->{provides}{$k} ||= undef;
-    }
-    1;
-}
-
-#- check if there has been a problem with reading hdlists or rpms
-#- to resolve provides on files.
-#- this is done by checking whether there exists a keys in provides
-#- hash where to value is null (and the key is a file).
-#- give the result as output.
-sub get_unresolved_provides_files {
-    my ($params) = @_;
-    my ($k, $v, @unresolved);
-
-    while (($k, $v) = each %{$params->{provides}}) {
-	$k =~ /^\// && ! defined $v and push @unresolved, $k;
-    }
-    @unresolved;
-}
-
-#- clean everything on provides but keep the files key entry on undef.
-#- this is necessary to try a second pass.
-#- support sense in flags.
-sub keep_only_cleaned_provides_files {
-    my ($params) = @_;
-    my @keeplist = map { s/\[\*\]//g; $_ } grep { /^\// } keys %{$params->{provides}};
-
-    #- clean everything at this point, but keep file referenced.
-    $params->{info} = {};
-    $params->{depslist} = [];
-    $params->{provides} = {}; @{$params->{provides}}{@keeplist} = ();
-}
-
-#- reset params to allow other entries.
-sub clean {
-    my ($params) = @_;
-
-    $params->{info} = {};
-    $params->{depslist} = [];
-    $params->{provides} = {};
-}
-
-#- read provides, first is key, after values.
-sub read_provides {
-    my ($params, $FILE) = @_;
-
-    local $_;
-    while (<$FILE>) {
-	chomp;
-	my ($k, @v) = split '@';
-	foreach (@v) {
-	    $params->{provides}{$k}{$_} = undef;
-	}
-    }
-}
-
-#- write provides, first is key, after values.
-sub write_provides {
-    my ($params, $FILE) = @_;
-    my ($k, $v);
-
-    while (($k, $v) = each %{$params->{provides}}) {
-	printf $FILE "%s\n", join '@', $k, keys %{$v || {}};
-    }
-}
-
-#- read compss, look at DrakX for more info.
-sub read_compss {
-    my ($params, $FILE) = @_;
-    my ($p, %compss);
-
-    local $_;
-    while (<$FILE>) {
-	/^\s*$/ || /^#/ and next;
-	s/#.*//;
-
-	if (/^(\S.*)/) {
-	    $p = $1;
-	} else {
-	    /(\S+)/;
-	    $compss{$1} = $p;
-	}
-    }
-
-    #- mark all packages which matching name with group.
-    foreach (@{$params->{depslist}}) {
-	$compss{$_->{name}} and $_->{group} = $compss{$_->{name}};
-    }
-
-    1;
-}
-
-#- write compss.
-sub write_compss {
-    my ($params, $FILE) = @_;
-    my %p;
-
-    foreach (values %{$params->{info}}) {
-	$_->{group} or next;
-	push @{$p{$_->{group}} ||= []}, $_->{name};
-    }
-    foreach (sort keys %p) {
-	print $FILE $_, "\n";
-	foreach (@{$p{$_}}) {
-	    print $FILE "\t", $_, "\n";
-	}
-	print $FILE "\n";
-    }
-    1;
-}
-
-#- compare architecture.
-sub better_arch {
-    my ($new, $old) = @_;
-    while ($new && $new ne $old) { $new = $compat_arch{$new} }
-    $new;
-}
-sub compat_arch { better_arch(arch(), $_[0]) }
-
-#- compare a version string, make sure no deadlock can occur.
-#- try to return always a numerical value.
-sub version_compare {
-    goto &rpmvercmp;
-}
-#- historical perl version (still breaks on "4m" with "4.1m"...
-#-    my ($a, $b) = @_;
-#-    local $_;
-#-
-#-    while ($a || $b) {
-#-	my ($sb, $sa) =  map { $1 if $a =~ /^\W*\d/ ? s/^\W*0*(\d+)// : s/^\W*(\D*)// } ($b, $a);
-#-	$_ = ($sa =~ /^\d/ || $sb =~ /^\d/) && length($sa) <=> length($sb) || $sa cmp $sb and return $_ || 0;
-#-	$sa eq '' && $sb eq '' and return $a cmp $b || 0;
-#-    }
-#-    0;
-
-#- compare package name to increase chance of avoiding loop in prerequisite chain.
-sub package_name_compare {
-    my ($a, $b) = @_;
-    my ($sa,$sb);
-
-    ($sa) = ($a =~ /^lib(.*)/);
-    ($sb) = ($b =~ /^lib(.*)/);
-    $sa && $sb and return $sa cmp $sb;
-    $sa and return -1;
-    $sb and return +1;
-    $a cmp $b; #- fall back.
-}
-
-1;