#!/usr/local/bin/perl
#
#  Implementation of the Piet programming language, as described at
#  http://www.physics.usyd.edu.au/~mar/esoteric/piet.html
#
#  v 0.1 - 10/19/2001 
#    Much optimization, reorganization, modularization, documentation, 
#    testing, and general cleaning up needs done, but it works, sorta.
#  v 0.2 - 11/11/2001 
#    Trashing everything, moving to use Piet::Interpreter module.

use strict;
use Piet::Interpreter;
use Getopt::Std;

#  Initialize variables and lookup tables

getopts('bdtws:');
our($opt_b, $opt_d, $opt_s, $opt_t, $opt_w);
my $csize = $opt_s || 1;
$^W       = ($opt_d || $opt_w);

my $infile = shift ||  &usage;

my $piet = Piet::Interpreter->new( debug      => $opt_d,
				   trace      => $opt_t,
				   codel_size => $opt_s,
				   );
$piet->nonstandard('black') if $opt_b;

$piet->image($infile);     
$piet->run;


sub usage {
    print <<USE;

This script implements the Piet programming language, described in full at:
  http://www.physics.usyd.edu.au/~mar/esoteric/piet.html

You must supply an image as an argument, like so:
  piet [-d] [-w] [-s <num>] hello.gif

    Flags:
      -d : turns on debugging
      -w : turns on interpreter warnings
      -t : trace mode - prints operations 
      -s : sets codel size in pixel width (default 1)
      -b : sets undefined colors to black (default white) 

Thank you, please come again.

USE


    exit;
}