[Summary view] [Print] [Text view]

   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\Shortcut;
  13  
  14  use Symfony\Component\CssSelector\Node\ElementNode;
  15  use Symfony\Component\CssSelector\Node\SelectorNode;
  16  use Symfony\Component\CssSelector\Parser\ParserInterface;
  17  
  18  /**
  19   * CSS selector element parser shortcut.
  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 ElementParser implements ParserInterface
  29  {
  30      /**
  31       * {@inheritdoc}
  32       */
  33      public function parse(string $source): array
  34      {
  35          // Matches an optional namespace, required element or `*`
  36          // $source = 'testns|testel';
  37          // $matches = array (size=3)
  38          //     0 => string 'testns|testel' (length=13)
  39          //     1 => string 'testns' (length=6)
  40          //     2 => string 'testel' (length=6)
  41          if (preg_match('/^(?:([a-z]++)\|)?([\w-]++|\*)$/i', trim($source), $matches)) {
  42              return [new SelectorNode(new ElementNode($matches[1] ?: null, $matches[2]))];
  43          }
  44  
  45          return [];
  46      }
  47  }