# -*- perl -*- Lintian::Index::Strings
#
# Copyright © 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::Strings;

use v5.20;
use warnings;
use utf8;

use Const::Fast;
use Path::Tiny;
use Unicode::UTF8 qw(decode_utf8);

use Lintian::IPC::Run3 qw(safe_qx);

use Moo::Role;
use namespace::clean;

const my $EMPTY => q{};

=head1 NAME

Lintian::Index::Strings - strings in binary files.

=head1 SYNOPSIS

    use Lintian::Index;

=head1 DESCRIPTION

Lintian::Index::Strings strings in binary files.

=head1 INSTANCE METHODS

=over 4

=item add_strings

=cut

sub add_strings {
    my ($self) = @_;

    my $errors = $EMPTY;

    my @files = grep { $_->is_file } @{$self->sorted_list};
    for my $file (@files) {

        next
          if $file->name =~ m{^usr/lib/debug/};

        # skip non-binaries
        next
          unless $file->file_info =~ /\bELF\b/;

        # prior implementations sometimes made the list unique
        my $allstrings
          = decode_utf8(safe_qx(qw{strings --all --}, $file->unpacked_path));

        $file->strings($allstrings);
    }

    return $errors;
}

=back

=head1 AUTHOR

Originally written by Felix Lechner <felix.lechner@lease-up.com> for
Lintian.

=head1 SEE ALSO

lintian(1)

=cut

1;

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