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vendor/symfony/css-selector/Parser/Handler/StringHandler.php 2.55 KB
ad2e91f7   Mihail   move multyparser ...
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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 cssselect 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;
      }
  }