# Copyright (C) 1998 Christian Schwarz and Richard Braakman
# Copyright (C) 1999 Joey Hess
# Copyright (C) 2000 Sean 'Shaleh' Perry
# Copyright (C) 2002 Josip Rodin
# Copyright (C) 2007 Russ Allbery
# Copyright (C) 2013-2018 Bastien ROUCARIES
# Copyright (C) 2017-2020 Chris Lamb <lamby@debian.org>
# Copyright (C) 2020-2021 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::Check::BuildSystems::Waf;

use v5.20;
use warnings;
use utf8;

use Unicode::UTF8 qw(encode_utf8);

use Moo;
use namespace::clean;

with 'Lintian::Check';

sub visit_patched_files {
    my ($self, $item) = @_;

    return
      unless $item->is_file;

    return
      unless $item->basename =~ m{ \b waf $}x;

    return
      unless $item->is_open_ok;

    open(my $fd, '<', $item->unpacked_path)
      or die encode_utf8('Cannot open ' . $item->unpacked_path);

    my $marker = 0;

    while (my $line = <$fd>) {

        next
          unless $line =~ m/^#/;

        if ($marker && $line =~ m/^#BZ[h0][0-9]/) {

            # waf is not allowed
            $self->pointed_hint('source-contains-waf-binary', $item->pointer);
            last;
        }

        $marker = 1
          if $line =~ m/^#==>/;

        # We could probably stop here, but just in case
        $marker = 0
          if $line =~ m/^#<==/;
    }

    close $fd;

    return;
}

1;

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