<?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.

 */

class Twig_Extension_Escaper extends Twig_Extension

{

    protected $autoescape;

    public function __construct($autoescape = true)

    {

        $this->autoescape = $autoescape;

    }

    /**

     * Returns the token parser instances to add to the existing list.

     *

     * @return array An array of Twig_TokenParserInterface or Twig_TokenParserBrokerInterface instances

     */

    public function getTokenParsers()

    {

        return array(new Twig_TokenParser_AutoEscape());

    }

    /**

     * Returns the node visitor instances to add to the existing list.

     *

     * @return array An array of Twig_NodeVisitorInterface instances

     */

    public function getNodeVisitors()

    {

        return array(new Twig_NodeVisitor_Escaper());

    }

    /**

     * Returns a list of filters to add to the existing list.

     *

     * @return array An array of filters

     */

    public function getFilters()

    {

        return array(

            'raw' => new Twig_Filter_Function('twig_raw_filter', array('is_safe' => array('all'))),

        );

    }

    public function isGlobal()

    {

        return $this->autoescape;

    }

    /**

     * Returns the name of the extension.

     *

     * @return string The extension name

     */

    public function getName()

    {

        return 'escaper';

    }

}

/**

 * Marks a variable as being safe.

 *

 * @param string $string A PHP variable

 */

function twig_raw_filter($string)

{

    return $string;

}