76 lines
1.8 KiB
PHP
76 lines
1.8 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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* Runs assets through OptiPNG.
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*
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* @link http://optipng.sourceforge.net/
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* @author Kris Wallsmith <kris.wallsmith@gmail.com>
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*/
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class OptiPngFilter implements FilterInterface
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{
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private $optipngBin;
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private $level;
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/**
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* Constructor.
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*
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* @param string $optipngBin Path to the optipng binary
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*/
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public function __construct($optipngBin = '/usr/bin/optipng')
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{
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$this->optipngBin = $optipngBin;
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}
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public function setLevel($level)
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{
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$this->level = $level;
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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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public function filterDump(AssetInterface $asset)
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{
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$pb = new ProcessBuilder(array($this->optipngBin));
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if (null !== $this->level) {
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$pb->add('-o')->add($this->level);
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}
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$pb->add('-out')->add($output = tempnam(sys_get_temp_dir(), 'assetic_optipng'));
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unlink($output);
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$pb->add($input = tempnam(sys_get_temp_dir(), 'assetic_optipng'));
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file_put_contents($input, $asset->getContent());
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$proc = $pb->getProcess();
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$code = $proc->run();
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if (0 < $code) {
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unlink($input);
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throw FilterException::fromProcess($proc)->setInput($asset->getContent());
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}
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$asset->setContent(file_get_contents($output));
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unlink($input);
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unlink($output);
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}
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}
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