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<?php
/**
* @package Warp Theme Framework
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
namespace Warp\Helper;
use Warp\Warp;
use Warp\Asset\AssetCollection;
use Warp\Asset\FileAsset;
use Warp\Asset\StringAsset;
/**
* Asset helper class to manage assets.
*/
class AssetHelper extends AbstractHelper
{
/**
* @var array
*/
protected $assets;
/**
* @var array
*/
protected $options;
/**
* Constructor
*/
public function __construct(Warp $warp)
{
parent::__construct($warp);
// init vars
$this->assets = array();
$this->options = array('base_path' => $this['system']->path, 'base_url' => rtrim($this['path']->url('site:'), '/'));
}
/**
* Get a asset collection
*
* @param string $name
* @return mixed
*/
public function get($name)
{
return isset($this->assets[$name]) ? $this->assets[$name] : null;
}
/**
* Create a string asset
*
* @param string $input
* @param array $options
* @return object
*/
public function createString($input, $options = array())
{
return new StringAsset($input, array_merge($options, $this->options));
}
/**
* Create a file asset
*
* @param string $input
* @param array $options
* @return object
*/
public function createFile($input, $options = array())
{
$url = $input;
$path = null;
if (!preg_match('/^(http|https)\:\/\//i', $input)) {
// resource identifier ?
if ($path = $this['path']->path($input)) {
$url = $this['path']->url($input);
}
// absolute/relative path ?
if (!$path) {
$path = realpath($this->options['base_path'].'/'.ltrim(preg_replace('/'.preg_quote(str_replace(DIRECTORY_SEPARATOR, '/', $this->options['base_url']), '/').'/', '', $input, 1), '/'));
}
}
return new FileAsset($url, $path, array_merge($options, $this->options));
}
/**
* Add a string asset
*
* @param string $name
* @param string $input
* @param array $options
* @return mixed
*/
public function addString($name, $input, $options = array())
{
return $this->addAsset($name, $this->createString($input, $options));
}
/**
* Add a file asset
*
* @param string $name
* @param string $input
* @param array $options
* @return mixed
*/
public function addFile($name, $input, $options = array())
{
return $this->addAsset($name, $this->createFile($input, $options));
}
/**
* Add asset object
*
* @param string $name
* @param object $asset
*/
protected function addAsset($name, $asset)
{
if (!isset($this->assets[$name])) {
$this->assets[$name] = new AssetCollection();
}
$this->assets[$name]->add($asset);
return $asset;
}
/**
* Apply filters and cache a asset
*
* @param string $file
* @param object $asset
* @param array $filters
* @param array $options
* @return object
*/
public function cache($file, $asset, $filters = array(), $options = array())
{
// init vars
$hash = substr($asset->hash(serialize($filters)), 0, 8);
$options = array_merge(array('Gzip' => false), $options);
// copy gzip file, if not exists
if ($options['Gzip'] && !$this['path']->path('cache:gzip.php')) {
@copy($this['path']->path('warp:gzip/gzip.php'), rtrim($this['path']->path('cache:'), '/').'/gzip.php');
}
// append cache file suffix based on hash
if ($extension = pathinfo($file, PATHINFO_EXTENSION)) {
$file = preg_replace('/'.preg_quote('.'.$extension, '/').'$/', sprintf('-%s.%s', $hash, $extension), $file, 1);
} else {
$file .= '-'.$hash;
}
// create cache file, if not exists
if (!$this['path']->path('cache:'.$file)) {
$content = $asset->getContent($this['assetfilter']->create($filters));
// move unresolved @import rules to the top
if (in_array('CssImportResolver', $filters)) {
$regexp = '/@import[^;]+;/i';
if (preg_match_all($regexp, $content, $matches)) {
$content = preg_replace($regexp, '', $content);
$content = implode("\n", $matches[0])."\n".$content;
}
}
@file_put_contents($this['path']->path('cache:').'/'.ltrim($file, '/'), $content);
}
$asset->setUrl($this['path']->url(($options['Gzip'] && $this['path']->path('cache:gzip.php') ? 'cache:gzip.php?' : 'cache:').$file));
return $asset;
}
}