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# Copyright © 1998 Richard Braakman
# Copyright © 1999 Darren Benham
# Copyright © 2000 Sean 'Shaleh' Perry
# Copyright © 2004 Frank Lichtenheld
# Copyright © 2006 Russ Allbery
# Copyright © 2007-2009 Raphaël Hertzog <hertzog@debian.org>
# Copyright © 2008-2009, 2012-2014 Guillem Jover <guillem@debian.org>
#
# This program is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
package Dpkg::Deps::Multiple;
=encoding utf8
=head1 NAME
Dpkg::Deps::Multiple - base module to represent multiple dependencies
=head1 DESCRIPTION
The Dpkg::Deps::Multiple module provides objects implementing various types
of dependencies. It is the base class for Dpkg::Deps::{AND,OR,Union}.
=cut
use strict;
use warnings;
our $VERSION = '1.02';
use Carp;
use Dpkg::ErrorHandling;
use parent qw(Dpkg::Interface::Storable);
=head1 METHODS
=over 4
=item $dep = Dpkg::Deps::Multiple->new(%opts);
Creates a new object.
=cut
sub new {
my $this = shift;
my $class = ref($this) || $this;
my $self = { list => [ @_ ] };
bless $self, $class;
return $self;
}
=item $dep->reset()
Clears any dependency information stored in $dep so that $dep->is_empty()
returns true.
=cut
sub reset {
my $self = shift;
$self->{list} = [];
}
=item $dep->add(@deps)
Adds new dependency objects at the end of the list.
=cut
sub add {
my $self = shift;
push @{$self->{list}}, @_;
}
=item $dep->get_deps()
Returns a list of sub-dependencies.
=cut
sub get_deps {
my $self = shift;
return grep { not $_->is_empty() } @{$self->{list}};
}
=item $dep->sort()
Sorts alphabetically the internal list of dependencies.
=cut
sub sort {
my $self = shift;
my @res = ();
@res = sort { Dpkg::Deps::deps_compare($a, $b) } @{$self->{list}};
$self->{list} = [ @res ];
}
=item $dep->arch_is_concerned($arch)
Returns true if at least one of the sub-dependencies apply to this
architecture.
=cut
sub arch_is_concerned {
my ($self, $host_arch) = @_;
my $res = 0;
foreach my $dep (@{$self->{list}}) {
$res = 1 if $dep->arch_is_concerned($host_arch);
}
return $res;
}
=item $dep->reduce_arch($arch)
Simplifies the dependencies to contain only information relevant to the
given architecture. The non-relevant sub-dependencies are simply removed.
This trims off the architecture restriction list of Dpkg::Deps::Simple
objects.
=cut
sub reduce_arch {
my ($self, $host_arch) = @_;
my @new;
foreach my $dep (@{$self->{list}}) {
$dep->reduce_arch($host_arch);
push @new, $dep if $dep->arch_is_concerned($host_arch);
}
$self->{list} = [ @new ];
}
=item $dep->has_arch_restriction()
Returns the list of package names that have such a restriction.
=cut
sub has_arch_restriction {
my $self = shift;
my @res;
foreach my $dep (@{$self->{list}}) {
push @res, $dep->has_arch_restriction();
}
return @res;
}
=item $dep->profile_is_concerned()
Returns true if at least one of the sub-dependencies apply to this profile.
=cut
sub profile_is_concerned {
my ($self, $build_profiles) = @_;
my $res = 0;
foreach my $dep (@{$self->{list}}) {
$res = 1 if $dep->profile_is_concerned($build_profiles);
}
return $res;
}
=item $dep->reduce_profiles()
Simplifies the dependencies to contain only information relevant to the
given profile. The non-relevant sub-dependencies are simply removed.
This trims off the profile restriction list of Dpkg::Deps::Simple objects.
=cut
sub reduce_profiles {
my ($self, $build_profiles) = @_;
my @new;
foreach my $dep (@{$self->{list}}) {
$dep->reduce_profiles($build_profiles);
push @new, $dep if $dep->profile_is_concerned($build_profiles);
}
$self->{list} = [ @new ];
}
=item $dep->is_empty()
Returns true if the dependency is empty and doesn't contain any useful
information. This is true when a (descendant of) Dpkg::Deps::Multiple
contains an empty list of dependencies.
=cut
sub is_empty {
my $self = shift;
return scalar @{$self->{list}} == 0;
}
=item $dep->merge_union($other_dep)
This method is not meaningful for this object, and will always croak.
=cut
sub merge_union {
croak 'method merge_union() is only valid for Dpkg::Deps::Simple';
}
=back
=head1 CHANGES
=head2 Version 1.02 (dpkg 1.17.10)
New methods: Add $dep->profile_is_concerned() and $dep->reduce_profiles().
=head2 Version 1.01 (dpkg 1.16.1)
New method: Add $dep->reset().
=head2 Version 1.00 (dpkg 1.15.6)
Mark the module as public.
=cut
1;
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