private static Pooled <ByteBuffer> ToBuffer(this Stream stream)
{
// TODO .Net 4.6
//var ms = stream as MemoryStream;
//if (ms != null)
//{
// ArraySegment<byte> msBuffer;
// if (ms.TryGetBuffer(out msBuffer))
// {
// return new PooledBuffer(msBuffer.Array, msBuffer.Offset, msBuffer.Count);
// }
//}
int count;
Pooled <ByteBuffer> pooled;
bool hasLength;
if (stream.CanSeek)
{
hasLength = true;
count = (int)(stream.Length - stream.Position);
pooled = SerializerBuffers.Get(count);
}
else
{
hasLength = false;
pooled = SerializerBuffers.Get(DefaultBufferSize);
count = pooled.Item.BufferLength;
}
var buf = pooled.Item;
var offset = 0;
while (true)
{
var read = stream.Read(buf.Buffer, offset, count);
// exit on EOF
if (read == 0)
{
break;
}
offset += read;
count -= read;
// we have more to read
if (count != 0)
{
continue;
}
// if length was known - just break
if (hasLength)
{
break;
}
// grow buffer and set new count
buf.Grow();
count = buf.BufferLength - offset;
}
// set actual bytes read
buf.SetView(0, offset);
return(pooled);
}
public static Pooled <ByteBuffer> SerializePooled <T>(T item) where T : IMessage
{
var calcSize = new ProtoSizeCalc(item);
var result = SerializerBuffers.Get(calcSize.Size);
var buf = result.Item;
var stream = new ProtoOutputStream(calcSize, buf.Buffer);
item.WriteTo(stream);
buf.SetView(0, calcSize.Size);
return(result);
}