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# Copyright © 2008-2011 Raphaël Hertzog <hertzog@debian.org>
# Copyright © 2008-2018 Guillem Jover <guillem@debian.org>
#
# This program is free software; you can 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 program 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::Source::Format;
=encoding utf8
=head1 NAME
Dpkg::Source::Format - manipulate debian/source/format files
=head1 DESCRIPTION
This module provides an object that can manipulate Debian source
package F<debian/source/format> files.
=cut
use strict;
use warnings;
our $VERSION = '1.00';
use Dpkg::Gettext;
use Dpkg::ErrorHandling;
use parent qw(Dpkg::Interface::Storable);
=head1 METHODS
=over 4
=item $f = Dpkg::Source::Format->new(%opts)
Creates a new object corresponding to a source package's
F<debian/source/format> file. When the key B<filename> is set, it will
be used to parse and set the format. Otherwise if the B<format> key is
set it will be validated and used to set the format.
=cut
sub new {
my ($this, %opts) = @_;
my $class = ref($this) || $this;
my $self = {
filename => undef,
major => undef,
minor => undef,
variant => undef,
};
bless $self, $class;
if (exists $opts{filename}) {
$self->load($opts{filename}, compression => 0);
} elsif ($opts{format}) {
$self->set($opts{format});
}
return $self;
}
=item $f->set_from_parts($major[, $minor[, $variant]])
Sets the source format from its parts. The $major part is mandatory.
The $minor and $variant parts are optional.
B<Notice>: This function performs no validation.
=cut
sub set_from_parts {
my ($self, $major, $minor, $variant) = @_;
$self->{major} = $major;
$self->{minor} = $minor // 0;
$self->{variant} = $variant;
}
=item ($major, $minor, $variant) = $f->set($format)
Sets (and validates) the source $format specified. Will return the parsed
format parts as a list, the optional $minor and $variant parts might be
undef.
=cut
sub set {
my ($self, $format) = @_;
if ($format =~ /^(\d+)(?:\.(\d+))?(?:\s+\(([a-z0-9]+)\))?$/) {
my ($major, $minor, $variant) = ($1, $2, $3);
$self->set_from_parts($major, $minor, $variant);
return ($major, $minor, $variant);
} else {
error(g_("source package format '%s' is invalid"), $format);
}
}
=item ($major, $minor, $variant) = $f->get()
=item $format = $f->get()
Gets the source format, either as properly formatted scalar, or as a list
of its parts, where the optional $minor and $variant parts might be undef.
=cut
sub get {
my $self = shift;
if (wantarray) {
return ($self->{major}, $self->{minor}, $self->{variant});
} else {
my $format = "$self->{major}.$self->{minor}";
$format .= " ($self->{variant})" if defined $self->{variant};
return $format;
}
}
=item $count = $f->parse($fh, $desc)
Parse the source format string from $fh, with filehandle description $desc.
=cut
sub parse {
my ($self, $fh, $desc) = @_;
my $format = <$fh>;
chomp $format if defined $format;
error(g_('%s is empty'), $desc)
unless defined $format and length $format;
$self->set($format);
return 1;
}
=item $count = $f->load($filename)
Parse $filename contents for a source package format string.
=item $str = $f->output([$fh])
=item "$f"
Returns a string representing the source package format version.
If $fh is set, it prints the string to the filehandle.
=cut
sub output {
my ($self, $fh) = @_;
my $str = $self->get();
print { $fh } "$str\n" if defined $fh;
return $str;
}
=item $f->save($filename)
Save the source package format into the given $filename.
=back
=head1 CHANGES
=head2 Version 1.00 (dpkg 1.19.3)
Mark the module as public.
=cut
1;
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