function fb_url_inbound_alter in Drupal for Facebook 7.4

Same name and namespace in other branches

1. 6.3 fb_url_rewrite.inc \fb_url_inbound_alter()
2. 6.2 fb_url_rewrite.inc \fb_url_inbound_alter()
3. 7.3 fb_url_rewrite.inc \fb_url_inbound_alter()

Implements hook_url_inbound_alter().

Rewrite URLs for facebook canvas pages and page tabs. This is written in a generic way, so it will work with paths starting fb__canvas/... or fb__page/...

File

./fb.module, line 1752

Code

function fb_url_inbound_alter(&$path, $original_path, $path_language) {

  //dpm(func_get_args(), __FUNCTION__);

  // Requests starting with 'fb__' are prefixed with name/value pairs.
  // These should already have been parsed by fb_settings.inc, however we must remove them from the path.
  if (strpos($path, 'fb__') === 0) {
    $fb_url_alter_prefix =& drupal_static('fb_url_alter_prefix');
    $fb_url_alter_prefix = '';
    $fb_settings =& drupal_static('fb_settings');
    $args = explode('/', $path);
    while (!empty($args) && isset($fb_settings[$args[0]])) {
      $key = array_shift($args);
      $value = array_shift($args);

      // What we pull off the path here must be prepended in outbound alter.
      $fb_url_alter_prefix .= "{$key}/{$value}/";

      // We could do something with the values here, but they've already been parsed into $fb_settings.
    }
    if (count($args)) {
      $path = implode('/', $args);

      // remaining args
    }
    else {

      // frontpage
      $path = variable_get('site_frontpage', 'node');
    }

    // Do we really have to do this here?  It seems Drupal should do this only after all inbound alters complete!
    $alias = drupal_lookup_path('source', $path, $path_language);

    //can't use drupal_get_normal_path, it calls custom_url_rewrite_inbound
    if ($alias) {
      $path = $alias;
    }
    $result = $path;
  }
  else {

    // Not prefixed with fb__, nothing to do.
  }
}