internal unsafe ProviderManifest AddChunk(TraceEvent data)
{
if (provider != null)
{
return(null);
}
if (data.EventDataLength <= sizeof(ManifestEnvelope) || data.GetByteAt(3) != 0x5B) // magic number
{
return(null);
}
ushort totalChunks = (ushort)data.GetInt16At(4);
ushort chunkNum = (ushort)data.GetInt16At(6);
if (chunkNum >= totalChunks || totalChunks == 0)
{
return(null);
}
if (Chunks == null)
{
format = (ManifestEnvelope.ManifestFormats)data.GetByteAt(0);
majorVersion = (byte)data.GetByteAt(1);
minorVersion = (byte)data.GetByteAt(2);
ChunksLeft = totalChunks;
Chunks = new byte[ChunksLeft][];
}
else
{
// Chunks have to agree with the format and version information.
if (format != (ManifestEnvelope.ManifestFormats)data.GetByteAt(0) ||
majorVersion != data.GetByteAt(1) || minorVersion == data.GetByteAt(2))
{
return(null);
}
}
if (Chunks[chunkNum] != null)
{
return(null);
}
byte[] chunk = new byte[data.EventDataLength - 8];
Chunks[chunkNum] = data.EventData(chunk, 0, 8, chunk.Length);
--ChunksLeft;
if (ChunksLeft > 0)
{
return(null);
}
// OK we have a complete set of chunks
byte[] serializedData = Chunks[0];
if (Chunks.Length > 1)
{
int totalLength = 0;
for (int i = 0; i < Chunks.Length; i++)
{
totalLength += Chunks[i].Length;
}
// Concatinate all the arrays.
serializedData = new byte[totalLength];
int pos = 0;
for (int i = 0; i < Chunks.Length; i++)
{
Array.Copy(Chunks[i], 0, serializedData, pos, Chunks[i].Length);
pos += Chunks[i].Length;
}
}
Chunks = null;
// string str = Encoding.UTF8.GetString(serializedData);
provider = new ProviderManifest(serializedData, format, majorVersion, minorVersion);
return(provider);
}