<?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 $defaultStrategy; public function __construct($defaultStrategy = 'html') { $this->setDefaultStrategy($defaultStrategy); } /** * 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( new Twig_SimpleFilter('raw', 'twig_raw_filter', array('is_safe' => array('all'))), ); } /** * Sets the default strategy to use when not defined by the user. * * The strategy can be a valid PHP callback that takes the template * "filename" as an argument and returns the strategy to use. * * @param mixed $defaultStrategy An escaping strategy */ public function setDefaultStrategy($defaultStrategy) { // for BC if (true === $defaultStrategy) { $defaultStrategy = 'html'; } $this->defaultStrategy = $defaultStrategy; } /** * Gets the default strategy to use when not defined by the user. * * @param string $filename The template "filename" * * @return string The default strategy to use for the template */ public function getDefaultStrategy($filename) { // disable string callables to avoid calling a function named html or js, // or any other upcoming escaping strategy if (!is_string($this->defaultStrategy) && is_callable($this->defaultStrategy)) { return call_user_func($this->defaultStrategy, $filename); } return $this->defaultStrategy; } /** * 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; }