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# -*- perl -*- Lintian::Index::Md5sums
#
# Copyright (C) 2020 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, see <http://www.gnu.org/licenses/>.
package Lintian::Index::Md5sums;
use v5.20;
use warnings;
use utf8;
use Const::Fast;
use Cwd;
use Unicode::UTF8 qw(encode_utf8 decode_utf8);
use Lintian::IPC::Run3 qw(xargs);
use Lintian::Util qw(read_md5sums);
use Moo::Role;
use namespace::clean;
const my $EMPTY => q{};
const my $NEWLINE => qq{\n};
const my $WAIT_STATUS_SHIFT => 8;
const my $NULL => qq{\0};
=head1 NAME
Lintian::Index::Md5sums - calculate checksums for index.
=head1 SYNOPSIS
use Lintian::Index;
=head1 DESCRIPTION
Lintian::Index::Md5sums calculates checksums for an index.
=head1 INSTANCE METHODS
=over 4
=item add_md5sums
=cut
sub add_md5sums {
my ($self) = @_;
my $savedir = getcwd;
chdir($self->basedir)
or die encode_utf8(
$self->identifier . ': Cannot change to directory ' . $self->basedir);
my $errors = $EMPTY;
# get the regular files in the index
my @files = grep { $_->is_file } @{$self->sorted_list};
my @names = map { $_->name } @files;
my @command = qw(md5sum --);
my %md5sums;
xargs(
\@command,
\@names,
sub {
my ($stdout, $stderr, $status, @partial) = @_;
$stderr = decode_utf8($stderr)
if length $stderr;
if ($status) {
$errors .= "Cannot run @command: $stderr" . $NEWLINE;
return;
}
# undecoded split allows names with non UTF-8 bytes
my ($partial_sums, undef) = read_md5sums($stdout);
$md5sums{$_} = $partial_sums->{$_}for @partial;
}
);
$_->md5sum($md5sums{$_->name}) for @files;
chdir($savedir)
or die encode_utf8(
$self->identifier . ": Cannot change to directory $savedir");
return $errors;
}
=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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