kekrozsak/vendor/kriswallsmith/assetic/src/Assetic/Filter/SprocketsFilter.php

149 lines
3.6 KiB
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;
/**
* Runs assets through Sprockets.
*
* Requires Sprockets 1.0.x.
*
* @link http://getsprockets.org/
* @link http://github.com/sstephenson/sprockets/tree/1.0.x
*
* @author Kris Wallsmith <kris.wallsmith@gmail.com>
*/
class SprocketsFilter implements FilterInterface
{
private $sprocketsLib;
private $rubyBin;
private $includeDirs;
private $assetRoot;
/**
* Constructor.
*
* @param string $sprocketsLib Path to the Sprockets lib/ directory
* @param string $rubyBin Path to the ruby binary
*/
public function __construct($sprocketsLib = null, $rubyBin = '/usr/bin/ruby')
{
$this->sprocketsLib = $sprocketsLib;
$this->rubyBin = $rubyBin;
$this->includeDirs = array();
}
public function addIncludeDir($directory)
{
$this->includeDirs[] = $directory;
}
public function setAssetRoot($assetRoot)
{
$this->assetRoot = $assetRoot;
}
/**
* Hack around a bit, get the job done.
*/
public function filterLoad(AssetInterface $asset)
{
static $format = <<<'EOF'
#!/usr/bin/env ruby
require %s
%s
options = { :load_path => [],
:source_files => [%s],
:expand_paths => false }
%ssecretary = Sprockets::Secretary.new(options)
secretary.install_assets if options[:asset_root]
print secretary.concatenation
EOF;
$more = '';
foreach ($this->includeDirs as $directory) {
$more .= 'options[:load_path] << '.var_export($directory, true)."\n";
}
if (null !== $this->assetRoot) {
$more .= 'options[:asset_root] = '.var_export($this->assetRoot, true)."\n";
}
if ($more) {
$more .= "\n";
}
$tmpAsset = tempnam(sys_get_temp_dir(), 'assetic_sprockets');
file_put_contents($tmpAsset, $asset->getContent());
$input = tempnam(sys_get_temp_dir(), 'assetic_sprockets');
file_put_contents($input, sprintf($format,
$this->sprocketsLib
? sprintf('File.join(%s, \'sprockets\')', var_export($this->sprocketsLib, true))
: '\'sprockets\'',
$this->getHack($asset),
var_export($tmpAsset, true),
$more
));
$pb = new ProcessBuilder(array(
$this->rubyBin,
$input,
));
$proc = $pb->getProcess();
$code = $proc->run();
unlink($tmpAsset);
unlink($input);
if (0 < $code) {
throw FilterException::fromProcess($proc)->setInput($asset->getContent());
}
$asset->setContent($proc->getOutput());
}
public function filterDump(AssetInterface $asset)
{
}
private function getHack(AssetInterface $asset)
{
static $format = <<<'EOF'
module Sprockets
class Preprocessor
protected
def pathname_for_relative_require_from(source_line)
Sprockets::Pathname.new(@environment, File.join(%s, location_from(source_line)))
end
end
end
EOF;
$root = $asset->getSourceRoot();
$path = $asset->getSourcePath();
if ($root && $path) {
return sprintf($format, var_export(dirname($root.'/'.$path), true));
}
}
}