UglifyJs2Filter.php

<?php

/*
 * This file is part of the Assetic package, an OpenSky project.
 *
 * (c) 2010-2013 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;

/**
 * UglifyJs2 filter.
 *
 * @link http://lisperator.net/uglifyjs
 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
 */
class UglifyJs2Filter extends BaseNodeFilter {
  private $uglifyjsBin;
  private $nodeBin;
  private $compress;
  private $beautify;
  private $mangle;
  private $screwIe8;
  private $comments;
  private $wrap;
  public function __construct($uglifyjsBin = '/usr/bin/uglifyjs', $nodeBin = null) {
    $this->uglifyjsBin = $uglifyjsBin;
    $this->nodeBin = $nodeBin;
  }
  public function setCompress($compress) {
    $this->compress = $compress;
  }
  public function setBeautify($beautify) {
    $this->beautify = $beautify;
  }
  public function setMangle($mangle) {
    $this->mangle = $mangle;
  }
  public function setScrewIe8($screwIe8) {
    $this->screwIe8 = $screwIe8;
  }
  public function setComments($comments) {
    $this->comments = $comments;
  }
  public function setWrap($wrap) {
    $this->wrap = $wrap;
  }
  public function filterLoad(AssetInterface $asset) {
  }
  public function filterDump(AssetInterface $asset) {
    $pb = $this
      ->createProcessBuilder($this->nodeBin ? array(
      $this->nodeBin,
      $this->uglifyjsBin,
    ) : array(
      $this->uglifyjsBin,
    ));
    if ($this->compress) {
      $pb
        ->add('--compress');
    }
    if ($this->beautify) {
      $pb
        ->add('--beautify');
    }
    if ($this->mangle) {
      $pb
        ->add('--mangle');
    }
    if ($this->screwIe8) {
      $pb
        ->add('--screw-ie8');
    }
    if ($this->comments) {
      $pb
        ->add('--comments')
        ->add(true === $this->comments ? 'all' : $this->comments);
    }
    if ($this->wrap) {
      $pb
        ->add('--wrap')
        ->add($this->wrap);
    }

    // input and output files
    $input = tempnam(sys_get_temp_dir(), 'input');
    $output = tempnam(sys_get_temp_dir(), 'output');
    file_put_contents($input, $asset
      ->getContent());
    $pb
      ->add('-o')
      ->add($output)
      ->add($input);
    $proc = $pb
      ->getProcess();
    $code = $proc
      ->run();
    unlink($input);
    if (0 !== $code) {
      if (file_exists($output)) {
        unlink($output);
      }
      if (127 === $code) {
        throw new \RuntimeException('Path to node executable could not be resolved.');
      }
      throw FilterException::fromProcess($proc)
        ->setInput($asset
        ->getContent());
    }
    if (!file_exists($output)) {
      throw new \RuntimeException('Error creating output file.');
    }
    $asset
      ->setContent(file_get_contents($output));
    unlink($output);
  }

}