private void ReadChunkHeader(Bitstream stream)
{
header = new ChunkedHeader();
header.IsFile = stream.ReadBool();
if (header.IsFile)
{
var filenameLength = stream.ReadUInt32();
var filename = new byte[filenameLength + 1]; // semantically wrong. should be
// 0x104
stream.Read(filename, 0, (int) filenameLength); // and then read to end of string
filename[filenameLength] = 0; // whatever
header.Filename = Encoding.UTF8.GetString(filename);
throw new NotImplementedException();
}
header.IsCompressed = stream.ReadBool();
if (header.IsCompressed)
{
header.DecompressedLength = stream.ReadBits(26);
}
header.ByteLength = stream.ReadBits(26);
header.ChunkCount =
(header.ByteLength + DotaGameConnection.BYTES_PER_CHUNK - 1)/
DotaGameConnection.BYTES_PER_CHUNK;
Receiving = true;
dataIn = new byte[header.ByteLength];
dataReceived = new bool[header.ChunkCount];
countReceived = 0;
}
public string UnpackString(PropertyInfo info, Bitstream stream)
{
var length = stream.ReadBits(9);
var buffer = new byte[length];
stream.Read(buffer, 0, (int) length);
return new string((from byte b in buffer select (char) b).ToArray<char>());
}
private Message? ReadChunk(Bitstream stream)
{
var offset = stream.ReadBits(18);
var count = stream.ReadBits(3);
if (offset == 0)
{
ReadChunkHeader(stream);
}
var byteOffset = offset*DotaGameConnection.BYTES_PER_CHUNK;
uint byteCount;
if (offset + count < header.ChunkCount)
{
byteCount = count*DotaGameConnection.BYTES_PER_CHUNK;
}
else
{
byteCount = header.ByteLength - byteOffset;
}
stream.Read(dataIn, (int) byteOffset, (int) byteCount);
for (var i = offset;
i < offset + count;
++i)
{
if (!dataReceived[i])
{
dataReceived[i] = true;
++countReceived;
}
}
if (countReceived == header.ChunkCount)
{
Receiving = false;
return new Message
{
IsCompressed = header.IsCompressed,
DecompressedLength = header.DecompressedLength,
Data = dataIn
};
}
return null;
}
private Message ReadSingle(Bitstream stream)
{
var isCompressed = stream.ReadBool();
if (isCompressed)
{
var uncompressed_length = stream.ReadBits(26);
var length = stream.ReadBits(18);
var data = new byte[length];
stream.Read(data, 0, (int) length);
return new Message
{
IsCompressed = false,
Data = new SnappyDecompressor().Decompress(data, 0, data.Length)
};
}
else
{
var length = stream.ReadBits(18);
var data = new byte[length];
stream.Read(data, 0, (int) length);
return new Message
{
IsCompressed = false,
Data = data
};
}
}
