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-rw-r--r--inc/Twig/TokenParser/Sandbox.php68
1 files changed, 68 insertions, 0 deletions
diff --git a/inc/Twig/TokenParser/Sandbox.php b/inc/Twig/TokenParser/Sandbox.php
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1<?php
2
3/*
4 * This file is part of Twig.
5 *
6 * (c) 2010 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 as untrusted code that must be evaluated in the sandbox mode.
14 *
15 * <pre>
16 * {% sandbox %}
17 * {% include 'user.html' %}
18 * {% endsandbox %}
19 * </pre>
20 *
21 * @see http://www.twig-project.org/doc/api.html#sandbox-extension for details
22 */
23class Twig_TokenParser_Sandbox extends Twig_TokenParser
24{
25 /**
26 * Parses a token and returns a node.
27 *
28 * @param Twig_Token $token A Twig_Token instance
29 *
30 * @return Twig_NodeInterface A Twig_NodeInterface instance
31 */
32 public function parse(Twig_Token $token)
33 {
34 $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
35 $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
36 $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
37
38 // in a sandbox tag, only include tags are allowed
39 if (!$body instanceof Twig_Node_Include) {
40 foreach ($body as $node) {
41 if ($node instanceof Twig_Node_Text && ctype_space($node->getAttribute('data'))) {
42 continue;
43 }
44
45 if (!$node instanceof Twig_Node_Include) {
46 throw new Twig_Error_Syntax('Only "include" tags are allowed within a "sandbox" section', $node->getLine(), $this->parser->getFilename());
47 }
48 }
49 }
50
51 return new Twig_Node_Sandbox($body, $token->getLine(), $this->getTag());
52 }
53
54 public function decideBlockEnd(Twig_Token $token)
55 {
56 return $token->test('endsandbox');
57 }
58
59 /**
60 * Gets the tag name associated with this token parser.
61 *
62 * @return string The tag name
63 */
64 public function getTag()
65 {
66 return 'sandbox';
67 }
68}