* * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\CssSelector\Parser\Shortcut; use Symfony\Component\CssSelector\Node\ElementNode; use Symfony\Component\CssSelector\Node\SelectorNode; use Symfony\Component\CssSelector\Parser\ParserInterface; /** * CSS selector element parser shortcut. * * This component is a port of the Python cssselector library, * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. * * @author Jean-François Simon */ class ElementParser implements ParserInterface { /** * {@inheritdoc} */ public function parse($source) { // Matches an optional namespace, required element or `*` // $source = 'testns|testel'; // $matches = array (size=4) // 0 => string 'testns:testel' (length=13) // 1 => string 'testns:' (length=7) // 2 => string 'testns' (length=6) // 3 => string 'testel' (length=6) if (preg_match('/^(([a-z]+)\|)?([\w-]+|\*)$/i', trim($source), $matches)) { return array(new SelectorNode(new ElementNode($matches[2] ?: null, $matches[3]))); } return array(); } }