truncateSync method

@override void truncateSync(int length)

Cuts the file to length bytes. Must not extend.

Implementation

@override
void truncateSync(int length) {
  _checkOpen();
  if (length < 0 || length > _length) {
    throw RangeError.value(length, 'length', 'must be within 0..$_length');
  }
  _length = length;
}