chunkCrc method

int? chunkCrc(
  1. int index
)

Stored CRC-32 of chunk index, or null when unknown.

Implementation

int? chunkCrc(int index) {
  if (index < 0 || index >= chunkCount) return null;
  if ((_crcBitmap[index >> 3] & (1 << (index & 7))) == 0) return null;
  return _crcs[index];
}