NAME

       URI::VersionRange::Version - Version comparator class

SYNOPSIS

         package URI::VersionRange::Version::generic {

             use Version::libversion::XS qw(version_compare2);

             use parent 'URI::VersionRange::Version';
             use overload ('cmp' => \&compare, '<=>' => \&compare, fallback => 1);

             sub compare {
                 my ($left, $right) = @_;
                 return version_compare2($left->[0], $right->[0]);
             }

         }

         my $vers = URI::VersionRange->from_string('vers:generic/>v1.00|!=v2.10|<=v3.00');

         if ($vers->contains('v2.50')) {
           # do stuff
         }

DESCRIPTION

       This is a base class for the version comparator.

       NOTE: URI::VersionRange provide out-of-the-box "cpan" type comparator.

   OBJECT-ORIENTED INTERFACE
       $v = URI::VersionRange::Version->new( $value )
           Create new URI::VersionRange::Version instance using provided version "value".

       $v->compare
           Compare the version

   HOW TO CREATE A NEW VERSION COMPARATOR
       •   Create  a new package using the naming convention "URI::VersionRange::Version::<scheme>" by extending
           URI::VersionRange::Version.

       •   Implements the "compare($left, $right)" subroutine with the algorithm required by the "scheme".

           $left and $right arguments of "compare" are "ARRAY" and have as their first element the value of  the
           version to be compared.

       •   overload '<=>' and "cmp" operators using "compare" subroutine (MANDATORY)

       This  is  an  example that implements a comparator for the "generic" scheme using Version::libversion::XS
       module:

         package URI::VersionRange::Version::generic {

             use Version::libversion::XS;

             use parent 'URI::VersionRange::Version';
             use overload ('cmp' => \&compare, '<=>' => \&compare, fallback => 1);

             sub compare {
                 my ($left, $right) = @_;
                 return version_compare2($left->[0], $right->[0]);
             }

         }

       This is an another example for the "rpm" scheme using RPM4 module:

         package URI::VersionRange::Version::rpm {

             use RPM4;

             use parent 'URI::VersionRange::Version';
             use overload ('cmp' => \&compare, '<=>' => \&compare, fallback => 1);

             sub compare {
                 my ($left, $right) = @_;
                 return rpmvercmp($left->[0], $right->[0]);
             }

         }

SUPPORT

   Bugs / Feature Requests
       Please    report    any    bugs    or    feature    requests    through    the    issue    tracker     at
       <https://github.com/giterlizzi/perl-URI-PackageURL/issues>.   You  will  be notified automatically of any
       progress on your issue.

   Source Code
       This is open source software.  The code repository is available for public review and contribution  under
       the terms of the license.

       <https://github.com/giterlizzi/perl-URI-PackageURL>

           git clone https://github.com/giterlizzi/perl-URI-PackageURL.git

AUTHOR

       •   Giuseppe Di Terlizzi <gdt@cpan.org>

LICENSE AND COPYRIGHT

       This software is copyright (c) 2022-2024 by Giuseppe Di Terlizzi.

       This  is  free  software;  you  can  redistribute  it and/or modify it under the same terms as the Perl 5
       programming language system itself.

perl v5.40.1                                       2025-07-04                    URI::VersionRange::Version(3pm)