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package AptPkg::Version;
# $Id: Version.pm,v 1.6 2004/10/14 00:50:02 bod Exp $
require 5.005_62;
use strict;
use warnings;
use AptPkg;
use Carp;
require Exporter;
our @ISA = qw(Exporter);
our @EXPORT_OK = qw();
our @EXPORT = ();
our $VERSION = qw$Revision: 1.6 $[1] || 0.1;
sub label { shift->Label(@_) }
sub compare { shift->CmpVersion(@_) }
sub rel_compare { shift->CmpReleaseVer(@_) }
sub upstream { shift->UpstreamVersion(@_) }
{
my %DEB_RELATION = (
'<<' => AptPkg::Dep::Less,
'<=' => AptPkg::Dep::LessEq,
'=' => AptPkg::Dep::Equals,
'>=' => AptPkg::Dep::GreaterEq,
'>>' => AptPkg::Dep::Greater,
# deprecated
'<' => AptPkg::Dep::LessEq,
'>' => AptPkg::Dep::GreaterEq,
);
sub check_dep
{
my $self = shift;
my ($pkg, $op_str, $dep) = @_;
my $op = $DEB_RELATION{$op_str} || croak "invalid relation for check_dep `$op_str'";
$self->CheckDep($pkg, $op, $dep);
}
}
1;
__END__
=head1 NAME
AptPkg::Version - APT package versioning class
=head1 SYNOPSIS
use AptPkg::Version;
=head1 DESCRIPTION
The AptPkg::Version module provides an interface to B<APT>'s package
version handling.
=head2 AptPkg::Version
The AptPkg::Version package implements the B<APT> pkgVersioningSystem
class.
An instance of the AptPkg::Version class may be fetched using the
versioning method from AptPkg::System.
The following methods are implemented:
=over 4
=item label
Return the description of the versioning system, for example:
Standard .deb
for Debian systems.
=item compare(I<A>, I<B>)
Compare package version I<A> with I<B>, returning a negative value if
I<A> is an earlier version than I<B>, zero if the same or a positive
value if I<A> is later.
=item rel_compare(I<A>, I<B>)
Compare distribution release numbers.
=item check_dep(I<PKG>, I<OP>, I<DEP>)
Check that the package version I<PKG> satisfies the relation I<OP> to
the dependency version I<DEP>.
The relation I<OP> is specified in the Debian syntax regardless of the
versioning system:
<< strictly earlier
<= earlier or equal
= exactly equal
>= later or equal
>> strictly later
=item upstream(I<VER>)
Return the upstream component of the given version string.
=back
=head1 SEE ALSO
AptPkg::Config(3pm), AptPkg::System(3pm), AptPkg(3pm).
=head1 AUTHOR
Brendan O'Dea <bod@debian.org>
=cut
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