Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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Escaper.php
001 <?php
002
003 /*
004 * This file is part of Twig.
005 *
006 * (c) 2009 Fabien Potencier
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011 class Twig_Extension_Escaper extends Twig_Extension
012 {
013 protected $defaultStrategy;
014
015 /**
016 * Constructor.
017 *
018 * @param string|false|callable $defaultStrategy An escaping strategy
019 *
020 * @see setDefaultStrategy()
021 */
022 public function __construct($defaultStrategy = 'html')
023 {
024 $this->setDefaultStrategy($defaultStrategy);
025 }
026
027 public function getTokenParsers()
028 {
029 return array(new Twig_TokenParser_AutoEscape());
030 }
031
032 public function getNodeVisitors()
033 {
034 return array(new Twig_NodeVisitor_Escaper());
035 }
036
037 public function getFilters()
038 {
039 return array(
040 new Twig_SimpleFilter('raw', 'twig_raw_filter', array('is_safe' => array('all'))),
041 );
042 }
043
044 /**
045 * Sets the default strategy to use when not defined by the user.
046 *
047 * The strategy can be a valid PHP callback that takes the template
048 * "filename" as an argument and returns the strategy to use.
049 *
050 * @param string|false|callable $defaultStrategy An escaping strategy
051 */
052 public function setDefaultStrategy($defaultStrategy)
053 {
054 // for BC
055 if (true === $defaultStrategy) {
056 @trigger_error('Using "true" as the default strategy is deprecated since version 1.21. Use "html" instead.', E_USER_DEPRECATED);
057
058 $defaultStrategy = 'html';
059 }
060
061 if ('filename' === $defaultStrategy) {
062 $defaultStrategy = array('Twig_FileExtensionEscapingStrategy', 'guess');
063 }
064
065 $this->defaultStrategy = $defaultStrategy;
066 }
067
068 /**
069 * Gets the default strategy to use when not defined by the user.
070 *
071 * @param string $filename The template "filename"
072 *
073 * @return string|false The default strategy to use for the template
074 */
075 public function getDefaultStrategy($filename)
076 {
077 // disable string callables to avoid calling a function named html or js,
078 // or any other upcoming escaping strategy
079 if (!is_string($this->defaultStrategy) && false !== $this->defaultStrategy) {
080 return call_user_func($this->defaultStrategy, $filename);
081 }
082
083 return $this->defaultStrategy;
084 }
085
086 public function getName()
087 {
088 return 'escaper';
089 }
090 }
091
092 /**
093 * Marks a variable as being safe.
094 *
095 * @param string $string A PHP variable
096 *
097 * @return string
098 */
099 function twig_raw_filter($string)
100 {
101 return $string;
102 }
103