public void Advance(int count)
{
_currentByteIndex += count;
while (_currentByteIndex >= _byteIndexProcessedUpTo + _blockSizeBytes)
{
var block = _buffer.AsSpan(_byteIndexProcessedUpTo, _blockSizeBytes);
_hashFunction.AddCompleteBlock(block);
_byteIndexProcessedUpTo += _blockSizeBytes;
}
}
private static byte[] GenerateHashImpl(
ReadOnlySpan <byte> bytes,
IHashFunction hashFunction)
{
var blockSizeBytes = hashFunction.BlockSizeBytes;
var blockCount = bytes.Length / blockSizeBytes;
var remainder = bytes.Length % blockSizeBytes;
for (var blockIndex = 0; blockIndex < blockCount; blockIndex++)
{
var start = blockIndex * blockSizeBytes;
var block = bytes.Slice(start, blockSizeBytes);
hashFunction.AddCompleteBlock(block);
}
if (remainder > 0)
{
hashFunction.AddRemainder(bytes.Slice(bytes.Length - remainder));
}
return(hashFunction.GetFinalHashValue());
}
