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package Version::Compare;
{
$Version::Compare::VERSION = '0.14';
}
# ABSTRACT: Compare version strings
use warnings;
use strict;
sub max {
my $x = shift;
my $y = shift;
return ( $x > $y ? $x : $y );
}
## no critic(ProhibitNumberedNames ProhibitCStyleForLoops)
sub version_compare {
my $ver1 = shift || 0;
my $ver2 = shift || 0;
my @v1 = split /[.+:~-]/, $ver1;
my @v2 = split /[.+:~-]/, $ver2;
for ( my $i = 0 ; $i < max( scalar(@v1), scalar(@v2) ) ; $i++ ) {
# Add missing version parts if one string is shorter than the other
# i.e. 0 should be lt 0.2.1 and not equal, so we append .0
# -> 0.0.0 <=> 0.2.1 -> -1
push( @v1, 0 ) unless defined( $v1[$i] );
push( @v2, 0 ) unless defined( $v2[$i] );
if ( int( $v1[$i] ) > int( $v2[$i] ) ) {
return 1;
}
elsif ( int( $v1[$i] ) < int( $v2[$i] ) ) {
return -1;
}
}
return 0;
}
## use critic
## no critic (RequireArgUnpacking ProhibitBuiltinHomonyms)
sub cmp {
return version_compare(@_);
}
## use critic
1; # End of Version::Compare
__END__
=pod
=head1 NAME
Version::Compare - Compare version strings
=head1 VERSION
version 0.14
=head1 SYNOPSIS
use Version::Compare;
if(&Version::Compare::version_compare('2.6.26','2.6.0') == 1) {
print "2.6.26 is greater than 2.6.0\n";
}
=head1 NAME
Version::Compare - Comparing version strings
=head1 SUBROUTINES/METHODS
=head2 max
Return the bigger of the two numerical values
=head2 version_compare
Compare two unix-style version strings like 2.6.23.1 and 2.6.33 and return and sort-like
return code (1 => LHS bigger, 0 => equal, -1 => RHS bigger)
0.0 < 0.5 < 0.10 < 0.99 < 1 < 1.0~rc1 < 1.0 < 1.0+b1 < 1.0+nmu1 < 1.1 < 2.0
=head2 cmp
See L<version_compare>.
=head1 AUTHOR
Dominik Schulz, C<< <dominik.schulz at gauner.org> >>
=head1 BUGS
Please report any bugs or feature requests to C<bug-version-compare at rt.cpan.org>, or through
the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Version-Compare>. I will be notified, and then you'll
automatically be notified of progress on your bug as I make changes.
=head1 SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Version::Compare
You can also look for information at:
=over 4
=item * RT: CPAN's request tracker
L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Version-Compare>
=item * AnnoCPAN: Annotated CPAN documentation
L<http://annocpan.org/dist/Version-Compare>
=item * CPAN Ratings
L<http://cpanratings.perl.org/d/Version-Compare>
=item * Search CPAN
L<http://search.cpan.org/dist/Version-Compare/>
=back
=head1 LICENSE AND COPYRIGHT
Copyright 2012 Dominik Schulz
This program is free software; you can redistribute it and/or modify it
under the terms of either: the GNU General Public License as published
by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
=head1 AUTHOR
Dominik Schulz <dominik.schulz@gauner.org>
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Dominik Schulz.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
