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package URI::VersionRange::Version;
use feature ':5.10';
use strict;
use utf8;
use warnings;
use version ();
use overload ('cmp' => \&compare, '<=>' => \&compare, fallback => 1);
sub new { my $class = shift; bless [@_], $class }
sub compare { (version->parse($_[0]->[0]) <=> version->parse($_[1]->[0])) }
*parse = \&new;
package # hide from pause
URI::VersionRange::Version::cpan;
use parent 'URI::VersionRange::Version';
1;
__END__
=head1 NAME
URI::VersionRange::Version - Version comparator class
=head1 SYNOPSIS
package URI::VersionRange::Version::generic {
use Version::libversion::XS qw(version_compare2);
use parent 'URI::VersionRange::Version';
use overload ('cmp' => \&compare, '<=>' => \&compare, fallback => 1);
sub compare {
my ($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
}
=head1 DESCRIPTION
This is a base class for the version comparator.
NOTE: L<URI::VersionRange> provide out-of-the-box C<cpan> type comparator.
=head2 OBJECT-ORIENTED INTERFACE
=over
=item $v = URI::VersionRange::Version->new( $value )
Create new B<URI::VersionRange::Version> instance using provided version C<value>.
=item $v->compare
Compare the version
=back
=head2 HOW TO CREATE A NEW VERSION COMPARATOR
=over
=item * Create a new package using the naming convention C<< URI::VersionRange::Version::<scheme> >>
by extending L<URI::VersionRange::Version>.
=item * Implements the C<compare($left, $right)> subroutine with the algorithm required
by the C<scheme>.
C<$left> and C<$right> arguments of C<compare> are C<ARRAY> and have as their
first element the value of the version to be compared.
=item * L<overload> C<< '<=>' >> and C<cmp> operators using C<compare> subroutine (MANDATORY)
=back
This is an example that implements a comparator for the C<generic> scheme using
L<Version::libversion::XS> module:
package URI::VersionRange::Version::generic {
use Version::libversion::XS;
use parent 'URI::VersionRange::Version';
use overload ('cmp' => \&compare, '<=>' => \&compare, fallback => 1);
sub compare {
my ($left, $right) = @_;
return version_compare2($left->[0], $right->[0]);
}
}
This is an another example for the C<rpm> scheme using L<RPM4> module:
package URI::VersionRange::Version::rpm {
use RPM4;
use parent 'URI::VersionRange::Version';
use overload ('cmp' => \&compare, '<=>' => \&compare, fallback => 1);
sub compare {
my ($left, $right) = @_;
return rpmvercmp($left->[0], $right->[0]);
}
}
=head1 SUPPORT
=head2 Bugs / Feature Requests
Please report any bugs or feature requests through the issue tracker
at L<https://github.com/giterlizzi/perl-URI-PackageURL/issues>.
You will be notified automatically of any progress on your issue.
=head2 Source Code
This is open source software. The code repository is available for
public review and contribution under the terms of the license.
L<https://github.com/giterlizzi/perl-URI-PackageURL>
git clone https://github.com/giterlizzi/perl-URI-PackageURL.git
=head1 AUTHOR
=over 4
=item * Giuseppe Di Terlizzi <gdt@cpan.org>
=back
=head1 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.
=cut
|
