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ChainLoader.php
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ChainLoader.php
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<?php
namespace Symfony\Components\Templating\Loader;
use Symfony\Components\Templating\Storage;
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien.potencier@symfony-project.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* ChainLoader is a loader that calls other loaders to load templates.
*
* @package Symfony
* @subpackage Components_Templating
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
*/
class ChainLoader extends Loader
{
protected $loaders;
/**
* Constructor.
*
* @param Loader[] $loaders An array of loader instances
*/
public function __construct(array $loaders = array())
{
$this->loaders = array();
foreach ($loaders as $loader) {
$this->addLoader($loader);
}
parent::__construct();
}
/**
* Adds a loader instance.
*
* @param Loader $loader A Loader instance
*/
public function addLoader(Loader $loader)
{
$this->loaders[] = $loader;
}
/**
* Loads a template.
*
* @param string $template The logical template name
* @param array $options An array of options
*
* @return Storage|Boolean false if the template cannot be loaded, a Storage instance otherwise
*/
public function load($template, array $options = array())
{
foreach ($this->loaders as $loader) {
if (false !== $ret = $loader->load($template, $options)) {
return $ret;
}
}
return false;
}
/**
* Returns true if the template is still fresh.
*
* @param string $template The template name
* @param array $options An array of options
* @param timestamp $time The last modification time of the cached template
*/
public function isFresh($template, array $options = array(), $time)
{
foreach ($this->loaders as $loader) {
if (false !== $ret = $loader->load($template, $options)) {
return $loader->isFresh($template, $options);
}
}
return false;
}
}