function FilesystemLoader::findTemplate

File

core/lib/Drupal/Core/Template/Loader/FilesystemLoader.php, line 81

Class

FilesystemLoader

Loads templates from the filesystem.

Namespace

Code

protected function findTemplate($name, $throw = TRUE) {
  $extension = pathinfo($name, PATHINFO_EXTENSION);
  if (!in_array($extension, $this->allowedFileExtensions, TRUE)) {
    if (!$throw) {
      return NULL;
    }
    // Customize the list of extensions if no file extension is allowed.
    $extensions = $this->allowedFileExtensions;
    $no_extension = array_search('', $extensions, TRUE);
    if (is_int($no_extension)) {
      unset($extensions[$no_extension]);
      $extensions[] = 'or no file extension';
    }
    if (empty($extension)) {
      $extension = 'no file extension';
    }
    throw new LoaderError(sprintf("Template %s has an invalid file extension (%s). Only templates ending in one of %s are allowed. Set the twig.config.allowed_file_extensions container parameter to customize the allowed file extensions", $name, $extension, implode(', ', $extensions)));
  }
  // Previously it was possible to access files in the parent directory of a
  // namespace. This was removed in Twig 2.15.3. In order to support backwards
  // compatibility, we are adding path directory as a namespace, and therefore
  // we can remove the directory traversal from the name.
  // @todo deprecate this functionality for removal in Drupal 11.
  if (preg_match('/(^\\@[^\\/]+\\/)\\.\\.\\/(.*)/', $name, $matches)) {
    $name = $matches[1] . $matches[2];
  }
  return parent::findTemplate($name, $throw);
}