getFilenameExtension static method

String? getFilenameExtension(
  1. String? path
)

Extract file extension from path

Implementation

static String? getFilenameExtension(String? path) {
  if (path == null) return null;
  final extIndex = path.lastIndexOf('.');
  if (extIndex == -1) return null;
  final folderIndex = path.lastIndexOf('/');
  if (folderIndex > extIndex) return null;
  return path.substring(extIndex + 1);
}