Gets the name of the directory from a given path.
This method is usually accessed through drupal_dirname(), which wraps around the PHP dirname() function because it does not support stream wrappers.
$uri: A URI or path.
A string containing the directory name.
Overrides DrupalStreamWrapperInterface::dirname
public function dirname($uri = NULL) {
list($scheme, $target) = explode('://', $uri, 2);
$target = $this
->getTarget($uri);
$dirname = dirname($target);
if ($dirname == '.') {
$dirname = '';
}
return $scheme . '://' . $dirname;
}