function crumbs_TrailFinder::buildTrail in Crumbs, the Breadcrumbs suite 7

Same name and namespace in other branches

1. 7.2 lib/TrailFinder.php \crumbs_TrailFinder::buildTrail()

Build the raw trail.

File

lib/TrailFinder.php, line 21

Class

crumbs_TrailFinder

Code

function buildTrail($path) {
  $path = drupal_get_normal_path($path);
  $trail_reverse = array();
  $front_normal_path = drupal_get_normal_path(variable_get('site_frontpage', 'node'));
  while (strlen($path) && $path !== '<front>' && $path !== $front_normal_path) {
    if (isset($trail_reverse[$path])) {

      // We found a loop! To prevent infinite recursion, we
      // remove the loopy paths from the trail and finish directly with <front>.
      while (isset($trail_reverse[$path])) {
        array_pop($trail_reverse);
      }
      break;
    }
    $item = crumbs_get_router_item($path);

    // If this menu item is a default local task and links to its parent,
    // skip it and start the search from the parent instead.
    if ($item && $item['type'] & MENU_LINKS_TO_PARENT) {
      $path = $item['tab_parent_href'];
      $item = crumbs_get_router_item($item['tab_parent_href']);
    }

    // For a path to be included in the trail, it must resolve to a valid
    // router item, and the access check must pass.
    if ($item && $item['access']) {
      $trail_reverse[$path] = $item;
    }
    $parent_path = $this->parentFinder
      ->getParentPath($path, $item);
    if ($parent_path === $path) {

      // This is again a loop, but with just one step.
      // Not as evil as the other kind of loop.
      break;
    }
    $path = $parent_path;
  }
  unset($trail_reverse['<front>']);

  // Only prepend a frontpage item, if the configured frontpage is valid.
  $front_menu_item = crumbs_get_router_item($front_normal_path);
  if (isset($front_menu_item) || TRUE) {
    $front_menu_item['href'] = '<front>';
    $trail_reverse[$front_normal_path] = $front_menu_item;
  }
  else {
    $message_raw = 'Your current setting for !site_frontpage seems to be invalid.';
    $message_replacements = array(
      '!site_frontpage' => '"' . l(t('Default front page'), 'admin/config/system/site-information') . '"',
    );
    watchdog('crumbs', $message_raw, $message_replacements);
    if (user_access('administer site configuration')) {
      drupal_set_message(t($message_raw, $message_replacements), 'warning');
    }
  }
  return array_reverse($trail_reverse);
}