#!/usr/bin/perl

# Copyright (C) 2019 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.

# The harness for Lintian's test suite.  For detailed information on
# the test suite layout and naming conventions, see t/tests/README.
# For more information about running tests, see
# doc/tutorial/Lintian/Tutorial/TestSuite.pod
#

use v5.20;
use warnings;
use utf8;

use Const::Fast;
use Cwd qw(realpath);
use File::Basename qw(dirname);

# neither Path::This nor lib::relative are in Debian
use constant THISFILE => realpath __FILE__;
use constant THISDIR => dirname realpath __FILE__;

# use Lintian modules that belong to this program
use lib THISDIR . '/../lib';

use Getopt::Long;
use List::Util qw(all);
use Path::Tiny;
use Term::ANSIColor;
use Unicode::UTF8 qw(encode_utf8);

use Test::Lintian::Output::Universal qw(parse_line order);

const my $EMPTY => q{};
const my $NEWLINE => qq{\n};

Getopt::Long::Configure;
unless (
    Getopt::Long::GetOptions(
        'help|h'         => sub {usage(); exit;},
    )
) {
    usage();
    die;
}

# check arguments and options
die encode_utf8("Please use -h for usage information.\n")
  if scalar @ARGV != 1;

# get arguments
my ($hintspath) = @ARGV;

my @hintslines = path($hintspath)->lines_utf8;
chomp @hintslines;

my $joined = $EMPTY;
$joined .= $_ . $NEWLINE
  for reverse sort { order($a) cmp order($b) } @hintslines;

path($hintspath)->spew_utf8($joined);

exit;

sub usage {
    my $message =<<"END";
Usage: $0 <hintfile>
    Sorts hintfile in the order preferred for universal hints.
END

    print encode_utf8($message);

    return;
}

# Local Variables:
# indent-tabs-mode: nil
# cperl-indent-level: 4
# End:
# vim: syntax=perl sw=4 sts=4 sr et