function language_from_url

Identify language via URL prefix or domain.

Parameters

$languages: An array of valid language objects.

$request: The HttpRequest object representing the current request.

Return value

A valid language code on success, FALSE otherwise.

File

drupal/core/modules/language/language.negotiation.inc, line 266

Language negotiation functions.

Code

function language_from_url($languages, $request) {
  $language_url = FALSE;
  if (!language_negotiation_method_enabled(LANGUAGE_NEGOTIATION_URL)) {
    return $language_url;
  }
  switch (config('language.negotiation')
    ->get('url.source')) {
    case LANGUAGE_NEGOTIATION_URL_PREFIX:
      $current_path = $request->attributes
        ->get('system_path');
      if (!isset($current_path)) {
        $current_path = trim($request
          ->getPathInfo(), '/');
      }
      list($language, $path) = language_url_split_prefix($current_path, $languages);

      // Store the correct system path, i.e. minus the path prefix, in the
      // request.
      $request->attributes
        ->set('system_path', $path);
      if ($language !== FALSE) {
        $language_url = $language->langcode;
      }
      break;
    case LANGUAGE_NEGOTIATION_URL_DOMAIN:

      // Get only the host, not the port.
      $http_host = $_SERVER['HTTP_HOST'];
      if (strpos($http_host, ':') !== FALSE) {
        $http_host_tmp = explode(':', $http_host);
        $http_host = current($http_host_tmp);
      }
      $domains = language_negotiation_url_domains();
      foreach ($languages as $language) {

        // Skip the check if the language doesn't have a domain.
        if (!empty($domains[$language->langcode])) {

          // Ensure that there is exactly one protocol in the URL when checking
          // the hostname.
          $host = 'http://' . str_replace(array(
            'http://',
            'https://',
          ), '', $domains[$language->langcode]);
          $host = parse_url($host, PHP_URL_HOST);
          if ($http_host == $host) {
            $language_url = $language->langcode;
            break;
          }
        }
      }
      break;
  }
  return $language_url;
}