137 lines
3.3 KiB
PHP
137 lines
3.3 KiB
PHP
<?php
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/*
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* This file is part of the Assetic package, an OpenSky project.
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*
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* (c) 2010-2012 OpenSky Project Inc
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Assetic\Filter;
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use Assetic\Asset\AssetInterface;
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use Assetic\Exception\FilterException;
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use Symfony\Component\Process\ProcessBuilder;
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/**
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* UglifyJs filter.
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*
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* @link https://github.com/mishoo/UglifyJS
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* @author André Roaldseth <andre@roaldseth.net>
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*/
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class UglifyJsFilter implements FilterInterface
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{
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private $uglifyJsPath;
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private $nodeJsPath;
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private $noCopyright;
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private $beautify;
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private $unsafe;
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/**
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* @param string $uglifyJsPath Absolute path to the uglifyjs executable
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* @param string $nodeJsPath Absolute path to the folder containg node.js executable
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*/
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public function __construct($uglifyJsPath, $nodeJsPath = null)
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{
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$this->uglifyJsPath = $uglifyJsPath;
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$this->nodeJsPath = $nodeJsPath;
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}
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/**
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* Removes the first block of comments as well
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* @param bool $noCopyright True to enable
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*/
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public function setNoCopyright($noCopyright)
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{
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$this->noCopyright = $noCopyright;
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}
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/**
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* Output indented code
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* @param bool $beautify True to enable
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*/
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public function setBeautify($beautify)
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{
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$this->beautify = $beautify;
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}
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/**
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* Enable additional optimizations that are known to be unsafe in some situations.
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* @param bool $unsafe True to enable
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*/
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public function setUnsafe($unsafe)
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{
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$this->unsafe = $unsafe;
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}
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/**
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* @see Assetic\Filter\FilterInterface::filterLoad()
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*/
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public function filterLoad(AssetInterface $asset)
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{
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}
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/**
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* Run the asset through UglifyJs
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*
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* @see Assetic\Filter\FilterInterface::filterDump()
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*/
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public function filterDump(AssetInterface $asset)
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{
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$executables = array();
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if ($this->nodeJsPath !== null) {
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$executables[] = $this->nodeJsPath;
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}
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$executables[] = $this->uglifyJsPath;
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$pb = new ProcessBuilder($executables);
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if ($this->noCopyright) {
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$pb->add('--no-copyright');
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}
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if ($this->beautify) {
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$pb->add('--beautify');
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}
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if ($this->unsafe) {
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$pb->add('--unsafe');
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}
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// input and output files
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$input = tempnam(sys_get_temp_dir(), 'input');
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$output = tempnam(sys_get_temp_dir(), 'output');
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file_put_contents($input, $asset->getContent());
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$pb->add('-o')->add($output)->add($input);
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$proc = $pb->getProcess();
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$code = $proc->run();
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unlink($input);
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if (0 < $code) {
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if (file_exists($output)) {
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unlink($output);
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}
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if (127 === $code) {
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throw new \RuntimeException('Path to node executable could not be resolved.');
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}
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throw FilterException::fromProcess($proc)->setInput($asset->getContent());
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} elseif (!file_exists($output)) {
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throw new \RuntimeException('Error creating output file.');
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}
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$uglifiedJs = file_get_contents($output);
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unlink($output);
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$asset->setContent($uglifiedJs);
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}
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}
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