/** * Prepare the transformation * * @param mixed $data Data to transform - xml or array or a file that contains the xml or the array * @return string */ protected function getCleanedData($data = null) { if (is_string($data) && !preg_match('/^([\\s|\\t]*(<\\?xml\\s.*\\?>)|(<\\w+>))/i', $data) && !file_exists($data)) { throw new Transform_Exception("File '{$data}' doesn't exists."); } if ($data instanceof Fs_Node) { $data = $data->getContents(); } if (is_array($data)) { $data = Transform::to('xml', array('rootNodeName' => isset($this->rootNodeName) ? $this->rootNodeName : 'root'))->process($data); } return $data; }