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# Copyright (C) 2021 Felix Lechner
#
# 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, you can find it on the World Wide
# Web at https://www.gnu.org/copyleft/gpl.html, or write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
package Lintian::Archive;
use v5.20;
use warnings;
use utf8;
use Const::Fast;
use IPC::Run3;
use Path::Tiny;
use Unicode::UTF8 qw(encode_utf8);
use Moo;
use namespace::clean;
const my $SLASH => q{/};
const my $WAIT_STATUS_SHIFT => 8;
=head1 NAME
Lintian::Archive -- Facilities for archive data
=head1 SYNOPSIS
use Lintian::Archive;
=head1 DESCRIPTION
A class for downloading and accessing archive information
=head1 INSTANCE METHODS
=over 4
=item mirror_base
=item work_folder
=item packages
=cut
has mirror_base => (is => 'rw', default => 'https://deb.debian.org/debian');
has work_folder => (
is => 'rw',
lazy => 1,
default => sub {
my ($self) = @_;
my $work_folder
= Path::Tiny->tempdir(TEMPLATE => 'lintian-archive-XXXXXXXXXX');
return $work_folder;
}
);
has packages => (is => 'rw', default => sub { {} });
=item contents_gz
=cut
sub contents_gz {
my ($self, $release, $archive_liberty, $installable_architecture) = @_;
my $relative
= "$release/$archive_liberty/Contents-$installable_architecture.gz";
my $local_path = $self->work_folder . $SLASH . $relative;
return $local_path
if -e $local_path;
path($local_path)->parent->mkpath;
my $url = $self->mirror_base . "/dists/$relative";
my $stderr;
run3([qw{wget --quiet}, "--output-document=$local_path", $url],
undef, \$stderr);
my $status = ($? >> $WAIT_STATUS_SHIFT);
# stderr already in UTF-8
die $stderr
if $status;
return $local_path;
}
=item deb822_packages_by_installable_name
=cut
sub deb822_packages_by_installable_name {
my ($self, $release, $archive_liberty, $port) = @_;
return $self->packages->{$release}{$archive_liberty}{$port}
if exists $self->packages->{$release}{$archive_liberty}{$port};
my $relative_unzipped = "$release/$archive_liberty/binary-$port/Packages";
my $local_path = $self->work_folder . $SLASH . $relative_unzipped;
path($local_path)->parent->mkpath;
my $url = $self->mirror_base . "/dists/$relative_unzipped.gz";
my $stderr;
run3([qw{wget --quiet}, "--output-document=$local_path.gz", $url],
undef, \$stderr);
my $status = ($? >> $WAIT_STATUS_SHIFT);
# stderr already in UTF-8
die $stderr
if $status;
run3(['gunzip', "$local_path.gz"], undef, \$stderr);
$status = ($? >> $WAIT_STATUS_SHIFT);
# stderr already in UTF-8
die $stderr
if $status;
my $deb822 = Lintian::Deb822->new;
my @sections = $deb822->read_file($local_path);
unlink($local_path)
or die encode_utf8("Cannot delete $local_path");
my %section_by_installable_name;
for my $section (@sections) {
my $installable_name = $section->value('Package');
$section_by_installable_name{$installable_name} = $section;
}
$self->packages->{$release}{$archive_liberty}{$port}
= \%section_by_installable_name;
return \%section_by_installable_name;
}
=back
=head1 AUTHOR
Originally written by Felix Lechner <felix.lechner@lease-up.com> for Lintian.
=head1 SEE ALSO
lintian(1)
=cut
1;
# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et
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