public CompressedChunk(XlBinaryReader Data)
{
this.CompressedChunkStart = Data.i;
this.CompressedHeader = new CompressedChunkHeader(Data);
this.CompressedData = new CompressedChunkData(this.CompressedHeader, Data);
}
//protected TokenSequence _TokenSequence;
public CompressedChunkData(CompressedChunkHeader header, XlBinaryReader Data)
{
this.header = header;
if (header.CompressedChunkFlag == (Byte)0x00)
{
// page 57: CompressedChunkData contains an array of CompressedChunkHeader.CompressedChunkSize
// elements plus 3 bytes of uncompressed data
int ArraySize = header.CompressedChunkSize + 3;
this.Data = new Byte[ArraySize];
int CopySize = header.CompressedChunkSize; // todo: this is my fix...
Array.Copy(Data.ReadBytes(CopySize), 0, this.Data, 0, CopySize);
//Array.Copy(Data, ArrayIndex, this.Data, 0, CopySize);
//ArrayIndex += header.CompressedChunkSize;
this.Decompress = (buffer, state) => DecompressRawChunk(buffer, state, this.Data);
}
else if (header.CompressedChunkFlag == (Byte)0x01)
{
// TODO: DO something like when compressedcurrent < compressedend -> add a new tokensequence
// page 57: CompressedChunkData contains an array of TokenSequence elements
var size = Math.Min(header.CompressedChunkSize, Data.Length - Data.i);
var tokenSequences = new List <TokenSequence>();
int processedBytes = 0;
while (processedBytes < size)
{
int remainingBytes = size - processedBytes;
var tokenSequence = new TokenSequence(Data, remainingBytes);
tokenSequences.Add(tokenSequence);
processedBytes += tokenSequence.GetSizeInBytes();
}
//var tokenSequenceBytes = tokenSequence.GetDataInRawBytes();
//this.Data = tokenSequenceBytes;
//var tokenSequenceSize = tokenSequenceBytes.Count();
//if(tokenSequenceSize != header.CompressedChunkSize+3)
//{
//throw new InvalidOperationException(String.Format("CompressedChunkData Data-array size expected {0}, but was {1}", header.CompressedChunkSize+3, tokenSequenceSize));
//}
this.Decompress = (buffer, state) => DecompressTokenSequence(buffer, state, tokenSequences);
}
else
{
throw new Exception();
}
//this._TokenSequence = new TokenSequence(ref Data);
//Data = Data.Skip(N);
}
