insert static method

Uint8List insert({ required Uint8List origin, required int indexStart, required Uint8List arrayInsert, })

在字节某个索引处插入字节

Implementation

static Uint8List insert(
    {required Uint8List origin,
    required int indexStart,
    required Uint8List arrayInsert}) {
  if (indexStart < 0 || arrayInsert.isEmpty) return origin;

  if (origin.isEmpty) {
    return Uint8List.fromList(arrayInsert);
  }

  final actIndex = indexStart > origin.length ? origin.length : indexStart;

  var list = List<int>.from(origin);
  list.insertAll(actIndex, arrayInsert);
  return Uint8List.fromList(list);
}