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#line 1 "inc/Sort/Versions.pm - /Library/Perl/5.8.1/Sort/Versions.pm"
#!/usr/bin/perl
# $Id: Versions.pm,v 1.9 2003/08/24 22:58:14 ed Exp $
# Copyright (c) 1996, Kenneth J. Albanowski. All rights reserved. This
# program is free software; you can redistribute it and/or modify it under
# the same terms as Perl itself.
package Sort::Versions;
use vars '$VERSION';
$VERSION = '1.5';
require Exporter;
@ISA=qw(Exporter);
@EXPORT=qw(&versions &versioncmp);
@EXPORT_OK=qw();
sub versioncmp( $$ ) {
my @A = ($_[0] =~ /([-.]|\d+|[^-.\d]+)/g);
my @B = ($_[1] =~ /([-.]|\d+|[^-.\d]+)/g);
my ($A, $B);
while (@A and @B) {
$A = shift @A;
$B = shift @B;
if ($A eq '-' and $B eq '-') {
next;
} elsif ( $A eq '-' ) {
return -1;
} elsif ( $B eq '-') {
return 1;
} elsif ($A eq '.' and $B eq '.') {
next;
} elsif ( $A eq '.' ) {
return -1;
} elsif ( $B eq '.' ) {
return 1;
} elsif ($A =~ /^\d+$/ and $B =~ /^\d+$/) {
if ($A =~ /^0/ || $B =~ /^0/) {
return $A cmp $B if $A cmp $B;
} else {
return $A <=> $B if $A <=> $B;
}
} else {
$A = uc $A;
$B = uc $B;
return $A cmp $B if $A cmp $B;
}
}
@A <=> @B;
}
sub versions() {
my $callerpkg = (caller)[0];
my $caller_a = "${callerpkg}::a";
my $caller_b = "${callerpkg}::b";
no strict 'refs';
return versioncmp($$caller_a, $$caller_b);
}
#line 149
1;
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