writeBytes method

@override void writeBytes(List<int> bytes, [ int? len ])

Write a set of bytes to the end of the buffer.

Implementation

@override
void writeBytes(List<int> bytes, [int? len]) {
  len ??= bytes.length;

  while (length + len > _buffer.length) {
    _expandBuffer((length + len) - _buffer.length);
  }

  //_buffer.setRange is very slow in Dart, a for-loop is much faster.
  if (len == 1) {
    _buffer[length] = bytes[0];
  } else if (len == 2) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
  } else if (len == 3) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
  } else if (len == 4) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
    _buffer[length + 3] = bytes[3];
  } else if (len == 5) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
    _buffer[length + 3] = bytes[3];
    _buffer[length + 4] = bytes[4];
  } else if (len == 6) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
    _buffer[length + 3] = bytes[3];
    _buffer[length + 4] = bytes[4];
    _buffer[length + 5] = bytes[5];
  } else if (len == 7) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
    _buffer[length + 3] = bytes[3];
    _buffer[length + 4] = bytes[4];
    _buffer[length + 5] = bytes[5];
    _buffer[length + 6] = bytes[6];
  } else if (len == 8) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
    _buffer[length + 3] = bytes[3];
    _buffer[length + 4] = bytes[4];
    _buffer[length + 5] = bytes[5];
    _buffer[length + 6] = bytes[6];
    _buffer[length + 7] = bytes[7];
  } else if (len == 9) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
    _buffer[length + 3] = bytes[3];
    _buffer[length + 4] = bytes[4];
    _buffer[length + 5] = bytes[5];
    _buffer[length + 6] = bytes[6];
    _buffer[length + 7] = bytes[7];
    _buffer[length + 8] = bytes[8];
  } else if (len == 10) {
    _buffer[length] = bytes[0];
    _buffer[length + 1] = bytes[1];
    _buffer[length + 2] = bytes[2];
    _buffer[length + 3] = bytes[3];
    _buffer[length + 4] = bytes[4];
    _buffer[length + 5] = bytes[5];
    _buffer[length + 6] = bytes[6];
    _buffer[length + 7] = bytes[7];
    _buffer[length + 8] = bytes[8];
    _buffer[length + 9] = bytes[9];
  } else {
    for (int i = 0, j = length; i < len; ++i, ++j) {
      _buffer[j] = bytes[i];
    }
  }
  length += len;
}