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<?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.
*/
/**
* Marks a section of a template to be escaped or not.
*
* <pre>
* {% autoescape true %}
* Everything will be automatically escaped in this block
* {% endautoescape %}
*
* {% autoescape false %}
* Everything will be outputed as is in this block
* {% endautoescape %}
*
* {% autoescape true js %}
* Everything will be automatically escaped in this block
* using the js escaping strategy
* {% endautoescape %}
* </pre>
*/
class Twig_TokenParser_AutoEscape extends Twig_TokenParser
{
/**
* Parses a token and returns a node.
*
* @param Twig_Token $token A Twig_Token instance
*
* @return Twig_NodeInterface A Twig_NodeInterface instance
*/
public function parse(Twig_Token $token)
{
$lineno = $token->getLine();
$stream = $this->parser->getStream();
if ($stream->test(Twig_Token::BLOCK_END_TYPE)) {
$value = 'html';
} else {
$expr = $this->parser->getExpressionParser()->parseExpression();
if (!$expr instanceof Twig_Node_Expression_Constant) {
throw new Twig_Error_Syntax('An escaping strategy must be a string or a Boolean.', $stream->getCurrent()->getLine(), $stream->getFilename());
}
$value = $expr->getAttribute('value');
$compat = true === $value || false === $value;
if (true === $value) {
$value = 'html';
}
if ($compat && $stream->test(Twig_Token::NAME_TYPE)) {
if (false === $value) {
throw new Twig_Error_Syntax('Unexpected escaping strategy as you set autoescaping to false.', $stream->getCurrent()->getLine(), $stream->getFilename());
}
$value = $stream->next()->getValue();
}
}
$stream->expect(Twig_Token::BLOCK_END_TYPE);
$body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
$stream->expect(Twig_Token::BLOCK_END_TYPE);
return new Twig_Node_AutoEscape($value, $body, $lineno, $this->getTag());
}
public function decideBlockEnd(Twig_Token $token)
{
return $token->test('endautoescape');
}
/**
* Gets the tag name associated with this token parser.
*
* @return string The tag name
*/
public function getTag()
{
return 'autoescape';
}
}
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