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vichan/inc/lib/Twig/Loader/Chain.php

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2011-10-05 06:22:53 +02:00
<?php
/*
* This file is part of Twig.
*
* (c) 2011 Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* Loads templates from other loaders.
*
* @package twig
* @author Fabien Potencier <fabien@symfony.com>
*/
class Twig_Loader_Chain implements Twig_LoaderInterface
{
protected $loaders;
/**
* Constructor.
*
* @param Twig_LoaderInterface[] $loaders An array of loader instances
*/
public function __construct(array $loaders = array())
{
$this->loaders = array();
foreach ($loaders as $loader) {
$this->addLoader($loader);
}
}
/**
* Adds a loader instance.
*
* @param Twig_LoaderInterface $loader A Loader instance
*/
public function addLoader(Twig_LoaderInterface $loader)
{
$this->loaders[] = $loader;
}
/**
* Gets the source code of a template, given its name.
*
* @param string $name The name of the template to load
*
* @return string The template source code
*/
public function getSource($name)
{
foreach ($this->loaders as $loader) {
try {
return $loader->getSource($name);
} catch (Twig_Error_Loader $e) {
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
}
/**
* Gets the cache key to use for the cache for a given template name.
*
* @param string $name The name of the template to load
*
* @return string The cache key
*/
public function getCacheKey($name)
{
foreach ($this->loaders as $loader) {
try {
return $loader->getCacheKey($name);
} catch (Twig_Error_Loader $e) {
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
}
/**
* Returns true if the template is still fresh.
*
* @param string $name The template name
* @param timestamp $time The last modification time of the cached template
*/
public function isFresh($name, $time)
{
foreach ($this->loaders as $loader) {
try {
return $loader->isFresh($name, $time);
} catch (Twig_Error_Loader $e) {
}
}
throw new Twig_Error_Loader(sprintf('Template "%s" is not defined.', $name));
}
}