private function Route::sanitizeRequirement

File

drupal/core/vendor/symfony/routing/Symfony/Component/Routing/Route.php, line 567

Class

Route

A Route describes a route and its parameters.

Namespace

Code

private function sanitizeRequirement($key, $regex) {
  if (!is_string($regex)) {
    throw new \InvalidArgumentException(sprintf('Routing requirement for "%s" must be a string.', $key));
  }
  if ('' !== $regex && '^' === $regex[0]) {
    $regex = (string) substr($regex, 1);

    // returns false for a single character
  }
  if ('$' === substr($regex, -1)) {
    $regex = substr($regex, 0, -1);
  }
  if ('' === $regex) {
    throw new \InvalidArgumentException(sprintf('Routing requirement for "%s" cannot be empty.', $key));
  }

  // this is to keep BC and will be removed in a future version
  if ('_scheme' === $key) {
    $this
      ->setSchemes(explode('|', $regex));
  }
  elseif ('_method' === $key) {
    $this
      ->setMethods(explode('|', $regex));
  }
  return $regex;
}