<?php

/*

 * This file is part of Twig.

 *

 * (c) 2009 Fabien Potencier

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

/**

 * Autoloads Twig Extensions classes.

 *

 * @package    twig

 * @author     Fabien Potencier <fabien.potencier@symfony-project.com>

 */

class Twig_Extensions_Autoloader

{

    /**

     * Registers Twig_Extensions_Autoloader as an SPL autoloader.

     */

    static public function register()

    {

        ini_set('unserialize_callback_func', 'spl_autoload_call');

        spl_autoload_register(array(new self, 'autoload'));

    }

    /**

     * Handles autoloading of classes.

     *

     * @param  string  $class  A class name.

     *

     * @return boolean Returns true if the class has been loaded

     */

    static public function autoload($class)

    {

        if (0 !== strpos($class, 'Twig_Extensions')) {

            return;

        }

        if (file_exists($file = dirname(__FILE__).'/../../'.str_replace('_', '/', $class).'.php')) {

            require $file;

        }

    }

}