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kekrozsak/vendor/kriswallsmith/assetic/src/Assetic/Filter/Yui/BaseCompressorFilter.php

107 lines
2.7 KiB

<?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\Yui;
use Assetic\Asset\AssetInterface;
use Assetic\Filter\FilterInterface;
use Assetic\Exception\FilterException;
use Symfony\Component\Process\ProcessBuilder;
/**
* Base YUI compressor filter.
*
* @link http://developer.yahoo.com/yui/compressor/
* @author Kris Wallsmith <kris.wallsmith@gmail.com>
*/
abstract class BaseCompressorFilter implements FilterInterface
{
private $jarPath;
private $javaPath;
private $charset;
private $lineBreak;
public function __construct($jarPath, $javaPath = '/usr/bin/java')
{
$this->jarPath = $jarPath;
$this->javaPath = $javaPath;
}
public function setCharset($charset)
{
$this->charset = $charset;
}
public function setLineBreak($lineBreak)
{
$this->lineBreak = $lineBreak;
}
public function filterLoad(AssetInterface $asset)
{
}
/**
* Compresses a string.
*
* @param string $content The content to compress
* @param string $type The type of content, either "js" or "css"
* @param array $options An indexed array of additional options
*
* @return string The compressed content
*/
protected function compress($content, $type, $options = array())
{
$pb = new ProcessBuilder(array(
$this->javaPath,
'-jar',
$this->jarPath,
));
foreach ($options as $option) {
$pb->add($option);
}
if (null !== $this->charset) {
$pb->add('--charset')->add($this->charset);
}
if (null !== $this->lineBreak) {
$pb->add('--line-break')->add($this->lineBreak);
}
// input and output files
$tempDir = realpath(sys_get_temp_dir());
$input = tempnam($tempDir, 'YUI-IN-');
$output = tempnam($tempDir, 'YUI-OUT-');
file_put_contents($input, $content);
$pb->add('-o')->add($output)->add('--type')->add($type)->add($input);
$proc = $pb->getProcess();
$code = $proc->run();
unlink($input);
if (0 < $code) {
if (file_exists($output)) {
unlink($output);
}
throw FilterException::fromProcess($proc)->setInput($content);
} elseif (!file_exists($output)) {
throw new \RuntimeException('Error creating output file.');
}
$retval = file_get_contents($output);
unlink($output);
return $retval;
}
}