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);
}