# files/compressed -- lintian check script -*- perl -*-

# Copyright © 1998 Christian Schwarz and Richard Braakman
#
# 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 http://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::files::compressed;

use v5.20;
use warnings;
use utf8;
use autodie;

use Moo;
use namespace::clean;

with 'Lintian::Check';

my $COMPRESS_FILE_EXTENSIONS
  = Lintian::Data->new('files/compressed-file-extensions',
    qr/\s++/,sub { return qr/\Q$_[0]\E/ });

# an OR (|) regex of all compressed extension
my $COMPRESS_FILE_EXTENSIONS_OR_ALL = sub { qr/(:?$_[0])/ }
  ->(
    join('|',
        map {$COMPRESS_FILE_EXTENSIONS->value($_) }
          $COMPRESS_FILE_EXTENSIONS->all));

# see tag duplicated-compressed-file
my $DUPLICATED_COMPRESSED_FILE_REGEX
  = qr/^(.+)\.(?:$COMPRESS_FILE_EXTENSIONS_OR_ALL)$/;

sub visit_installed_files {
    my ($self, $file) = @_;

    return
      unless $file->is_file;

    # both compressed and uncompressed present
    if ($file->name =~ $DUPLICATED_COMPRESSED_FILE_REGEX) {
        $self->tag('compressed-duplicate', $file->name)
          if $self->processable->installed->lookup($1);
    }

    return;
}

1;

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