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-rw-r--r--inc/Twig/TokenParser/AutoEscape.php89
1 files changed, 89 insertions, 0 deletions
diff --git a/inc/Twig/TokenParser/AutoEscape.php b/inc/Twig/TokenParser/AutoEscape.php
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1<?php
2
3/*
4 * This file is part of Twig.
5 *
6 * (c) 2009 Fabien Potencier
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12/**
13 * Marks a section of a template to be escaped or not.
14 *
15 * <pre>
16 * {% autoescape true %}
17 * Everything will be automatically escaped in this block
18 * {% endautoescape %}
19 *
20 * {% autoescape false %}
21 * Everything will be outputed as is in this block
22 * {% endautoescape %}
23 *
24 * {% autoescape true js %}
25 * Everything will be automatically escaped in this block
26 * using the js escaping strategy
27 * {% endautoescape %}
28 * </pre>
29 */
30class Twig_TokenParser_AutoEscape extends Twig_TokenParser
31{
32 /**
33 * Parses a token and returns a node.
34 *
35 * @param Twig_Token $token A Twig_Token instance
36 *
37 * @return Twig_NodeInterface A Twig_NodeInterface instance
38 */
39 public function parse(Twig_Token $token)
40 {
41 $lineno = $token->getLine();
42 $stream = $this->parser->getStream();
43
44 if ($stream->test(Twig_Token::BLOCK_END_TYPE)) {
45 $value = 'html';
46 } else {
47 $expr = $this->parser->getExpressionParser()->parseExpression();
48 if (!$expr instanceof Twig_Node_Expression_Constant) {
49 throw new Twig_Error_Syntax('An escaping strategy must be a string or a Boolean.', $stream->getCurrent()->getLine(), $stream->getFilename());
50 }
51 $value = $expr->getAttribute('value');
52
53 $compat = true === $value || false === $value;
54
55 if (true === $value) {
56 $value = 'html';
57 }
58
59 if ($compat && $stream->test(Twig_Token::NAME_TYPE)) {
60 if (false === $value) {
61 throw new Twig_Error_Syntax('Unexpected escaping strategy as you set autoescaping to false.', $stream->getCurrent()->getLine(), $stream->getFilename());
62 }
63
64 $value = $stream->next()->getValue();
65 }
66 }
67
68 $stream->expect(Twig_Token::BLOCK_END_TYPE);
69 $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
70 $stream->expect(Twig_Token::BLOCK_END_TYPE);
71
72 return new Twig_Node_AutoEscape($value, $body, $lineno, $this->getTag());
73 }
74
75 public function decideBlockEnd(Twig_Token $token)
76 {
77 return $token->test('endautoescape');
78 }
79
80 /**
81 * Gets the tag name associated with this token parser.
82 *
83 * @return string The tag name
84 */
85 public function getTag()
86 {
87 return 'autoescape';
88 }
89}