kareljs

#!/usr/bin/env node

var program = require('commander');
var fs = require('fs');
var version = require('../package.json').version;
var karel = require('../js/karel.js');

program
.version(version);

program
.command('compile <sourcefile>')
.description('Compiles source file')
.option('-o, --output [outputfile]', 'Specifies the output file (default sourcefile.kx)')
  .action(function(sourcefile, options){
    var path = require('path'); 
    if (!options.output) {
      options.output = path.parse(sourcefile).name + '.kx';
    }    
    
    var file = fs.readFileSync(sourcefile, {encoding: 'utf-8'});
    var compiled = karel.compile(file);
  
    fs.writeFileSync(options.output, JSON.stringify(compiled));
  });

program
.command('run <filename>')
.option('--debug','enables debug output')
.description('runs file')
.action(function(filename, options){
  var file = fs.readFileSync(filename, {encoding: 'utf-8'});
  var compiled = null;
  if (filename.endsWith('.kx')) {
  compiled = JSON.parse(file);
  } else {
  compiled = karel.compile(file);
  }
  var DOMParser = require('xmldom').DOMParser;
  var worldXml = new DOMParser().parseFromString(
      fs.readFileSync(process.stdin.fd, {encoding: 'utf-8'}), 'text/xml');
  var world = new karel.World(100, 100);
  world.load(worldXml);
  if (options.debug) {
    world.runtime.debug = true;
    world.runtime.addEventListener('debug', function(ev) {
      console.log(ev.debugType, ev.message);
    });
  }
  world.runtime.load(compiled);
  while (world.runtime.step());
  console.log(world.output());
});

program.parse(process.argv);

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