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/_test/vendor/symfony/css-selector/Parser/Handler/ -> StringHandler.php (source)

   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   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  namespace Symfony\Component\CssSelector\Parser\Handler;
  13  
  14  use Symfony\Component\CssSelector\Exception\InternalErrorException;
  15  use Symfony\Component\CssSelector\Exception\SyntaxErrorException;
  16  use Symfony\Component\CssSelector\Parser\Reader;
  17  use Symfony\Component\CssSelector\Parser\Token;
  18  use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerEscaping;
  19  use Symfony\Component\CssSelector\Parser\Tokenizer\TokenizerPatterns;
  20  use Symfony\Component\CssSelector\Parser\TokenStream;
  21  
  22  /**
  23   * CSS selector comment handler.
  24   *
  25   * This component is a port of the Python cssselect library,
  26   * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
  27   *
  28   * @author Jean-Fran├žois Simon <jeanfrancois.simon@sensiolabs.com>
  29   *
  30   * @internal
  31   */
  32  class StringHandler implements HandlerInterface
  33  {
  34      private $patterns;
  35      private $escaping;
  36  
  37      public function __construct(TokenizerPatterns $patterns, TokenizerEscaping $escaping)
  38      {
  39          $this->patterns = $patterns;
  40          $this->escaping = $escaping;
  41      }
  42  
  43      /**
  44       * {@inheritdoc}
  45       */
  46      public function handle(Reader $reader, TokenStream $stream): bool
  47      {
  48          $quote = $reader->getSubstring(1);
  49  
  50          if (!\in_array($quote, ["'", '"'])) {
  51              return false;
  52          }
  53  
  54          $reader->moveForward(1);
  55          $match = $reader->findPattern($this->patterns->getQuotedStringPattern($quote));
  56  
  57          if (!$match) {
  58              throw new InternalErrorException(sprintf('Should have found at least an empty match at %d.', $reader->getPosition()));
  59          }
  60  
  61          // check unclosed strings
  62          if (\strlen($match[0]) === $reader->getRemainingLength()) {
  63              throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
  64          }
  65  
  66          // check quotes pairs validity
  67          if ($quote !== $reader->getSubstring(1, \strlen($match[0]))) {
  68              throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
  69          }
  70  
  71          $string = $this->escaping->escapeUnicodeAndNewLine($match[0]);
  72          $stream->push(new Token(Token::TYPE_STRING, $string, $reader->getPosition()));
  73          $reader->moveForward(\strlen($match[0]) + 1);
  74  
  75          return true;
  76      }
  77  }