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   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\Parser\Reader;
  15  use Symfony\Component\CssSelector\Parser\Token;
  16  use Symfony\Component\CssSelector\Parser\TokenStream;
  17  
  18  /**
  19   * CSS selector whitespace handler.
  20   *
  21   * This component is a port of the Python cssselect library,
  22   * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
  23   *
  24   * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
  25   *
  26   * @internal
  27   */
  28  class WhitespaceHandler implements HandlerInterface
  29  {
  30      /**
  31       * {@inheritdoc}
  32       */
  33      public function handle(Reader $reader, TokenStream $stream): bool
  34      {
  35          $match = $reader->findPattern('~^[ \t\r\n\f]+~');
  36  
  37          if (false === $match) {
  38              return false;
  39          }
  40  
  41          $stream->push(new Token(Token::TYPE_WHITESPACE, $match[0], $reader->getPosition()));
  42          $reader->moveForward(\strlen($match[0]));
  43  
  44          return true;
  45      }
  46  }