public void WriteBlock(Stream streamIn, long length, int bufferSize = 81920)
{
if (streamIn == null)
{
throw new ArgumentNullException(nameof(streamIn));
}
if (!streamIn.CanRead)
{
throw new ArgumentException("streamIn must be readable", nameof(streamIn));
}
if (length < 0)
{
throw new ArgumentOutOfRangeException(nameof(length), "length must be 0 or larger");
}
if (bufferSize < 1)
{
throw new ArgumentOutOfRangeException(nameof(bufferSize), "bufferSize must be 1 or larger");
}
//Write the length of the block
byte[] bytes = BitConverter.GetBytes(length);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
streamOut.Write(bytes, 0, sizeof(long));
//Write the data
using (Stream limitedReader = new MultiBlockLimitedStreamReader(streamIn, length))
{
limitedReader.CopyTo(streamOut, bufferSize);
}
}
public Stream NextBlockAsStream()
{
if (activeBlock != null && activeBlock.Position != activeBlock.Length)
{
throw new InvalidOperationException("Unable to retrieve the next block untill the previous block has been fully read");
}
byte[] bytes = new byte[sizeof(long)];
streamIn.Read(bytes, 0, sizeof(long));
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
long length = BitConverter.ToInt64(bytes, 0);
activeBlock = new MultiBlockLimitedStreamReader(streamIn, length);
return(activeBlock);
}
