package Lire::Config::ExecutableSpec;

use strict;

=pod

=head1 Lire::Config::ExecutableSpec

Type that represents an executable.

Executable values are only valid when the path they point to exists.

=cut

use base qw/Lire::Config::ScalarSpec/;

use Lire::Utils qw/tilde_expand/;
use File::Spec;

sub is_valid {
    my ( $self, $val ) = @_;

    return !$self->required() unless defined $val;

    my $file = $self->normalize( $val );
    return -x $file && -f _;
}

sub normalize {
    my ( $self, $val ) = @_;

    return undef unless defined $val;

    my $exe = tilde_expand( $val );

    unless ( index($val, "/") != -1 ) {
        foreach my $d ( File::Spec->path ) {
            if (-f "$d/$exe" && -x "$d/$exe" ) {
                $exe = "$d/$exe";
                last;
            }
        }
    }

    return File::Spec->canonpath( $exe );
}

1;
__END__

=pod

=head1 VERSION

$Id: ExecutableSpec.pm,v 1.3 2006/07/23 13:16:30 vanbaal Exp $

=head1 AUTHORS

Francis J. Lacoste <flacoste@logreport.org>
Wessel Dankers <wsl@logreport.org>
Wolfgang Sourdeau <wolfgang@logreport.org>

=head1 COPYRIGHT

Copyright (C) 2002-2004  Stichting LogReport Foundation LogReport@LogReport.org

This file is part of Lire.

Lire 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 (see COPYING); if not, check with
http://www.gnu.org/copyleft/gpl.html.

=cut