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/usr/share/perl5/Lintian/Collect/Changes.pm is in lintian 2.5.81ubuntu1.

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# -*- perl -*-
# Lintian::Collect::Changes -- interface to .changes file data collection

# Copyright (C) 2010 Adam D. Barratt
#
# 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 <http://www.gnu.org/licenses/>.

package Lintian::Collect::Changes;

use strict;
use warnings;
use parent 'Lintian::Collect';

use Lintian::Util qw(strip $PKGREPACK_REGEX);

=head1 NAME

Lintian::Collect::Changes - Lintian interface to .changes file data collection

=head1 SYNOPSIS

    my ($name, $type) = ('foobar_1.2_i386.changes', 'changes');
    my $collect = Lintian::Collect->new($name, $type);
    my $files = $collect->files;

    foreach my $file (keys %{$files}) {
        my $size = $files->{$file}{size};
        print "File $file has size $size\n";
    }

=head1 DESCRIPTION

Lintian::Collect::Changes provides an interface to data for .changes
files.  It implements data collection methods specific to .changes 
files.

=head1 CLASS METHODS

=over 4

=item new (PACKAGE)

Creates a new Lintian::Collect::Changes object.  Currently, PACKAGE is
ignored.  Normally, this method should not be called directly, only via
the L<Lintian::Collect> constructor.

=cut

# Initialize a new .changes file collect object.  Takes the package name,
# which is currently unused.
sub new {
    my ($class, $pkg) = @_;
    my $self = {};
    bless($self, $class);
    return $self;
}

=back

=head1 INSTANCE METHODS

In addition to the instance methods listed below, all instance methods
documented in the L<Lintian::Collect> module are also available.

=over 4

=item files

Returns a reference to a hash containing information about files listed
in the .changes file.  Each hash may have the following keys:

=over 4

=item name

Name of the file.

=item size

The size of the file in bytes.

=item section

The archive section to which the file belongs.

=item priority

The priority of the file.

=item checksums

A hash with the keys being checksum algorithms and the values themselves being
hashes containing

=over 4

=item sum

The result of applying the given algorithm to the file.

=item filesize

The size of the file as given in the .changes section relating to the given
checksum.

=back

=back

Needs-Info requirements for using I<files>: L<Lintian::Collect/field ([FIELD[, DEFAULT]])>

=cut

sub files {
    my ($self) = @_;

    return $self->{files} if exists $self->{files};

    my %files;

    my $file_list = $self->field('files') || '';
    local $_;
    for (split /\n/, $file_list) {
        strip;
        next if $_ eq '';

        my ($md5sum,$size,$section,$priority,$file) = split(/\s+/o, $_);
        next if $file =~ m,/,;

        $files{$file}{checksums}{md5} = {
            'sum' => $md5sum,
            'filesize' => $size,
        };
        $files{$file}{name} = $file;
        $files{$file}{size} = $size;
        $files{$file}{section} = $section;
        $files{$file}{priority} = $priority;
    }

    foreach my $alg (qw(sha1 sha256)) {
        my $list = $self->field("checksums-$alg") || '';
        for (split /\n/, $list) {
            strip;
            next if $_ eq '';

            my ($checksum, $size, $file) = split(/\s+/o, $_);
            next if $file =~ m,/,;

            $files{$file}{checksums}{$alg} = {
                'sum' => $checksum,
                'filesize' => $size
            };
        }
    }

    $self->{files} = \%files;
    return $self->{files};
}

=item repacked

Returns true if the source package referenced in this changes file has been
"repacked" and false otherwise. This is determined from the version name
containing "dfsg" or similar.

Needs-Info requirements for using I<repacked>: L<Same as field|Lintian::Collect/field ([FIELD[, DEFAULT]])>

=cut

sub repacked {
    my ($self) = @_;
    return $self->{repacked} if exists $self->{repacked};
    $self->{repacked} = $self->field('version', '') =~ $PKGREPACK_REGEX;
    return $self->{repacked};
}

=back

=head1 AUTHOR

Originally written by Adam D. Barratt <adsb@debian.org> for Lintian.

=head1 SEE ALSO

lintian(1), L<Lintian::Collect>

=cut

1;

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