Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\CssSelector\Parser\Handler;
Chris@0: 
Chris@0: use Symfony\Component\CssSelector\Exception\InternalErrorException;
Chris@0: use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
Chris@0: use Symfony\Component\CssSelector\Parser\Reader;
Chris@0: use Symfony\Component\CssSelector\Parser\Token;
Chris@0: use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
Chris@0: use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
Chris@17: use Symfony\Component\CssSelector\Parser\TokenStream;
Chris@0: 
Chris@0: /**
Chris@0:  * CSS selector comment handler.
Chris@0:  *
Chris@0:  * This component is a port of the Python cssselect library,
Chris@0:  * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
Chris@0:  *
Chris@0:  * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
Chris@0:  *
Chris@0:  * @internal
Chris@0:  */
Chris@0: class StringHandler implements HandlerInterface
Chris@0: {
Chris@0:     private $patterns;
Chris@0:     private $escaping;
Chris@0: 
Chris@0:     public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
Chris@0:     {
Chris@0:         $this->patterns = $patterns;
Chris@0:         $this->escaping = $escaping;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@0:     public function handle(Reader $reader, TokenStream $stream)
Chris@0:     {
Chris@0:         $quote = $reader->getSubstring(1);
Chris@0: 
Chris@17:         if (!\in_array($quote, ["'", '"'])) {
Chris@0:             return false;
Chris@0:         }
Chris@0: 
Chris@0:         $reader->moveForward(1);
Chris@0:         $match = $reader->findPattern($this->patterns->getQuotedStringPattern($quote));
Chris@0: 
Chris@0:         if (!$match) {
Chris@0:             throw new InternalErrorException(sprintf('Should have found at least an empty match at %s.', $reader->getPosition()));
Chris@0:         }
Chris@0: 
Chris@0:         // check unclosed strings
Chris@17:         if (\strlen($match[0]) === $reader->getRemainingLength()) {
Chris@0:             throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
Chris@0:         }
Chris@0: 
Chris@0:         // check quotes pairs validity
Chris@17:         if ($quote !== $reader->getSubstring(1, \strlen($match[0]))) {
Chris@0:             throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
Chris@0:         }
Chris@0: 
Chris@0:         $string = $this->escaping->escapeUnicodeAndNewLine($match[0]);
Chris@0:         $stream->push(new Token(Token::TYPE_STRING, $string, $reader->getPosition()));
Chris@17:         $reader->moveForward(\strlen($match[0]) + 1);
Chris@0: 
Chris@0:         return true;
Chris@0:     }
Chris@0: }