fileExtension property

String? get fileExtension

Gets the file extension from this URI path.

Implementation

String? get fileExtension {
  final String? name = fileName;
  if (name == null) return null;
  final int dotIndex = name.lastIndexOf('.');
  if (dotIndex == -1 || dotIndex == name.length - 1) return null;
  return name.substring(dotIndex + 1).toLowerCase();
}