kaliop-uk / ezmigrationbundle

                    $warning = 'Note: the generated migration is empty';

                }

                switch ($fileType) {

                    case 'yml':

                        $code = Yaml::dump($data, 5);

                        break;

                    case 'json':

                        $code = json_encode($data, JSON_PRETTY_PRINT);

                        break;

                    default:

                        throw new \Exception("The combination of migration type '$migrationType' is not supported with format '$fileType'");

                }

        }

        file_put_contents($path, $code);

        $data = $this->referenceResolver->listReferences();

        $ext = pathinfo($fileName, PATHINFO_EXTENSION);

        switch ($ext) {

            case 'json':

                $data = json_encode($data, JSON_PRETTY_PRINT);

                break;

            case 'yml':

            case 'yaml':

                $data = Yaml::dump($data);

                break;

            default:

                throw new \Exception("Invalid step definition: unsupported file extension for saving references to");

        }

        file_put_contents($fileName, $data);