CoffeeScriptFilter.php

<?php

/*
 * This file is part of the Assetic package, an OpenSky project.
 *
 * (c) 2010-2012 OpenSky Project Inc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Assetic\Filter;

use Assetic\Asset\AssetInterface;
use Assetic\Exception\FilterException;
use Symfony\Component\Process\ProcessBuilder;

/**
 * Compiles CoffeeScript into Javascript.
 *
 * @link http://coffeescript.org/
 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
 */
class CoffeeScriptFilter implements FilterInterface {
  private $coffeePath;
  private $nodePath;

  // coffee options
  private $bare;
  public function __construct($coffeePath = '/usr/bin/coffee', $nodePath = '/usr/bin/node') {
    $this->coffeePath = $coffeePath;
    $this->nodePath = $nodePath;
  }
  public function setBare($bare) {
    $this->bare = $bare;
  }
  public function filterLoad(AssetInterface $asset) {
    $input = tempnam(sys_get_temp_dir(), 'assetic_coffeescript');
    file_put_contents($input, $asset
      ->getContent());
    $pb = new ProcessBuilder(array(
      $this->nodePath,
      $this->coffeePath,
      '-cp',
    ));
    if ($this->bare) {
      $pb
        ->add('--bare');
    }
    $pb
      ->add($input);
    $proc = $pb
      ->getProcess();
    $code = $proc
      ->run();
    unlink($input);
    if (0 < $code) {
      throw FilterException::fromProcess($proc)
        ->setInput($asset
        ->getContent());
    }
    $asset
      ->setContent($proc
      ->getOutput());
  }
  public function filterDump(AssetInterface $asset) {
  }

}