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package Version::Compare; |
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{ |
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$Version::Compare::VERSION = '0.14'; |
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} |
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# ABSTRACT: Compare version strings |
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use warnings; |
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use strict; |
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sub max { |
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my $x = shift; |
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my $y = shift; |
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return ( $x > $y ? $x : $y ); |
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} |
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## no critic(ProhibitNumberedNames ProhibitCStyleForLoops) |
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sub version_compare { |
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my $ver1 = shift || 0; |
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my $ver2 = shift || 0; |
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my @v1 = split /[.+:~-]/, $ver1; |
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my @v2 = split /[.+:~-]/, $ver2; |
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for ( my $i = 0 ; $i < max( scalar(@v1), scalar(@v2) ) ; $i++ ) { |
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# Add missing version parts if one string is shorter than the other |
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# i.e. 0 should be lt 0.2.1 and not equal, so we append .0 |
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# -> 0.0.0 <=> 0.2.1 -> -1 |
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push( @v1, 0 ) unless defined( $v1[$i] ); |
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push( @v2, 0 ) unless defined( $v2[$i] ); |
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if ( int( $v1[$i] ) > int( $v2[$i] ) ) { |
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return 1; |
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} |
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elsif ( int( $v1[$i] ) < int( $v2[$i] ) ) { |
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return -1; |
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} |
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} |
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0
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return 0; |
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} |
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## use critic |
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## no critic (RequireArgUnpacking ProhibitBuiltinHomonyms) |
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sub cmp { |
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return version_compare(@_); |
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} |
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## use critic |
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1; # End of Version::Compare |
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__END__ |
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=pod |
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=head1 NAME |
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Version::Compare - Compare version strings |
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=head1 VERSION |
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version 0.14 |
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=head1 SYNOPSIS |
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use Version::Compare; |
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if(&Version::Compare::version_compare('2.6.26','2.6.0') == 1) { |
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print "2.6.26 is greater than 2.6.0\n"; |
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} |
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=head1 NAME |
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Version::Compare - Comparing version strings |
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=head1 SUBROUTINES/METHODS |
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=head2 max |
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Return the bigger of the two numerical values |
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=head2 version_compare |
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Compare two unix-style version strings like 2.6.23.1 and 2.6.33 and return and sort-like |
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return code (1 => LHS bigger, 0 => equal, -1 => RHS bigger) |
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0.0 < 0.5 < 0.10 < 0.99 < 1 < 1.0~rc1 < 1.0 < 1.0+b1 < 1.0+nmu1 < 1.1 < 2.0 |
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=head2 cmp |
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See L<version_compare>. |
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=head1 AUTHOR |
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Dominik Schulz, C<< <dominik.schulz at gauner.org> >> |
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=head1 BUGS |
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Please report any bugs or feature requests to C<bug-version-compare at rt.cpan.org>, or through |
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the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Version-Compare>. I will be notified, and then you'll |
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automatically be notified of progress on your bug as I make changes. |
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=head1 SUPPORT |
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You can find documentation for this module with the perldoc command. |
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perldoc Version::Compare |
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You can also look for information at: |
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=over 4 |
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112
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=item * RT: CPAN's request tracker |
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114
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L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=Version-Compare> |
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=item * AnnoCPAN: Annotated CPAN documentation |
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118
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L<http://annocpan.org/dist/Version-Compare> |
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120
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=item * CPAN Ratings |
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122
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L<http://cpanratings.perl.org/d/Version-Compare> |
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=item * Search CPAN |
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126
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L<http://search.cpan.org/dist/Version-Compare/> |
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128
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=back |
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130
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=head1 LICENSE AND COPYRIGHT |
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132
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Copyright 2012 Dominik Schulz |
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134
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This program is free software; you can redistribute it and/or modify it |
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under the terms of either: the GNU General Public License as published |
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by the Free Software Foundation; or the Artistic License. |
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138
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See http://dev.perl.org/licenses/ for more information. |
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140
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=head1 AUTHOR |
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142
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Dominik Schulz <dominik.schulz@gauner.org> |
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144
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=head1 COPYRIGHT AND LICENSE |
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146
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This software is copyright (c) 2012 by Dominik Schulz. |
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148
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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151
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=cut |