File queryrecipe of Package build

#!/usr/bin/perl -w

################################################################
#
# Copyright (c) 1995-2014 SUSE Linux Products GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or 3 as
# published by the Free Software Foundation.
#
# 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 the file COPYING); if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
#
################################################################

BEGIN {
  unshift @INC, ($::ENV{'BUILD_DIR'} || '/usr/lib/build');
}

use strict;

use Build;

my ($dist, $archs, $configdir, $type, $recipe, $buildflavor, $obspackage);
$buildflavor = '';

$configdir = ($::ENV{'BUILD_DIR'} || '/usr/lib/build') . '/configs';

while (@ARGV)  {
  if ($ARGV[0] eq '--dist') {
    shift @ARGV;
    $dist = shift @ARGV;
    next;
  } elsif ($ARGV[0] eq '--archpath' || $ARGV[0] eq '--arch') {
    shift @ARGV;
    $archs = shift @ARGV;
    next;
  } elsif ($ARGV[0] eq '--configdir') {
    shift @ARGV;
    $configdir = shift @ARGV;
    next;
  } elsif ($ARGV[0] eq '--buildflavor') {
    shift @ARGV;
    $buildflavor = shift @ARGV;
    next;
  } elsif ($ARGV[0] eq '--obspackage') {
    shift @ARGV;
    $obspackage = shift @ARGV;
    next;
  } else {
    if (!defined($recipe)) {
      $recipe = shift @ARGV;
    } else {
      $type = shift @ARGV;
    }
  }
}

die("Please specify what to query\n") unless defined $recipe;

my $cf = Build::read_config_dist($dist, $archs, $configdir);
die("Unable to read config\n") unless $cf;
$cf->{'buildflavor'} = $buildflavor if defined $buildflavor;
$cf->{'obspackage'} = $obspackage if defined $obspackage;

my $q = Build::parse($cf, $recipe);

if (!defined $type) {
  require Data::Dumper;
  print Data::Dumper::Dumper($q);
  exit(0);
}
if (ref($q->{$type}) eq 'ARRAY') {
  print "$_\n" for @{$q->{$type}};
} elsif (ref($q->{$type}) eq '') {
  print "$q->{$type}\n" if defined $q->{$type};
} elsif (defined $q->{$type}) {
  print "unsupported query $type\n";
  exit(1);
}