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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\CssSelector\Parser\Handler;
use Symfony\Component\CssSelector\Exception\InternalErrorException;
use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
use Symfony\Component\CssSelector\Parser\Reader;
use Symfony\Component\CssSelector\Parser\Token;
use Symfony\Component\CssSelector\Parser\TokenStream;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
/**
* CSS selector comment handler.
*
* This component is a port of the Python cssselector library,
* which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
*
* @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
*/
class StringHandler implements HandlerInterface
{
/**
* @var TokenizerPatterns
*/
private $patterns;
/**
* @var TokenizerEscaping
*/
private $escaping;
/**
* @param TokenizerPatterns $patterns
* @param TokenizerEscaping $escaping
*/
public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
{
$this->patterns = $patterns;
$this->escaping = $escaping;
}
/**
* {@inheritdoc}
*/
public function handle(Reader $reader, TokenStream $stream)
{
$quote = $reader->getSubstring(1);
if (!in_array($quote, array("'", '"'))) {
return false;
}
$reader->moveForward(1);
$match = $reader->findPattern($this->patterns->getQuotedStringPattern($quote));
if (!$match) {
throw new InternalErrorException(sprintf('Should have found at least an empty match at %s.', $reader->getPosition()));
}
// check unclosed strings
if (strlen($match[0]) === $reader->getRemainingLength()) {
throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
}
// check quotes pairs validity
if ($quote !== $reader->getSubstring(1, strlen($match[0]))) {
throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
}
$string = $this->escaping->escapeUnicodeAndNewLine($match[0]);
$stream->push(new Token(Token::TYPE_STRING, $string, $reader->getPosition()));
$reader->moveForward(strlen($match[0]) + 1);
return true;
}
}