private bool WriteChunk(byte[] source)
{
if (IsTransforming)
{
if (!Transform.Write(source))
{
return(false);
}
if (Transform.BufferedReadable > 0)
{
return(HandleReadable(Transform.Read()));
}
return(true);
}
return(HandleReadable(source));
}
protected sealed override bool HandleWritable(byte[] source)
{
if (IsTransforming)
{
if (!Transform.Write(source))
{
return(false);
}
if (Transform.BufferedReadable > 0)
{
return(WriteChunk(Transform.Read()));
}
return(true);
}
return(WriteChunk(source));
}
protected sealed override bool HandleWritable(byte[] source)
{
if (Malformed)
{
return(false);
}
char c = '\0'; ulong length, i = 0, sourceLength = (ulong)source.LongLength;
for (; i < sourceLength;)
{
switch (State)
{
case ParseState.Dormant: return(false);
case ParseState.Binary:
ContentLength = EncodedContentLength += sourceLength;
if (!WriteChunk(source))
{
return(false);
}
if (Type.Value.Length.HasValue && Type.Value.Length == ContentLength)
{
return(Finish());
}
return(true);
case ParseState.Chunked_Length:
EncodedContentLength++;
c = (char)source[i++];
if (c == CR)
{
State = ParseState.Chunked_LengthLf;
}
else
{
ChunkLengthString = ChunkLengthString == null?c.ToString() : ChunkLengthString + c;
}
break;
case ParseState.Chunked_LengthLf:
EncodedContentLength++;
c = (char)source[i++];
if (c != LF)
{
return(!(Malformed = true));
}
ChunkIndex = 0;
if (!ulong.TryParse(ChunkLengthString, NumberStyles.AllowHexSpecifier, CultureInfo.InvariantCulture, out length))
{
return(!(Malformed = true));
}
ChunkLengthString = null;
State = (ChunkLength = length) == 0 ? ParseState.Chunked_Trailer : ParseState.Chunked_ChunkData;
break;
case ParseState.Chunked_ChunkData:
length = Math.Min(ChunkLength - ChunkIndex, sourceLength - i);
WriteChunk(PrimitiveBuffer.Slice(source, i, i += length));
ChunkIndex += length; ContentLength += length; EncodedContentLength += length;
if (ChunkIndex >= ChunkLength)
{
State = ParseState.Chunked_ChunkCr;
}
break;
case ParseState.Chunked_ChunkCr:
EncodedContentLength++;
c = (char)source[i++];
if (c != CR)
{
return(!(Malformed = true));
}
State = ParseState.Chunked_ChunkLf;
break;
case ParseState.Chunked_ChunkLf:
EncodedContentLength++;
c = (char)source[i++];
if (c != LF)
{
return(!(Malformed = true));
}
ChunkIndex = 0;
State = ParseState.Chunked_Length;
break;
case ParseState.Chunked_Trailer:
while ((c = (char)source[i++]) != CR)
{
EncodedContentLength++;
}
State = ParseState.Chunked_Lf;
break;
case ParseState.Chunked_Lf:
EncodedContentLength++;
c = (char)source[i++];
if (c != LF)
{
return(!(Malformed = true));
}
ExcessStore.Write(source, i);
return(Finish());
}
}
return(true);
}