private void SetTreeCodes()
{
byte[] codeLengths1 = new byte[288];
byte[] codeLengths2 = new byte[32];
Array.Copy((Array)this.codeList, (Array)codeLengths1, this.literalLengthCodeCount);
Array.Copy((Array)this.codeList, this.literalLengthCodeCount, (Array)codeLengths2, 0, this.distanceCodeCount);
if (codeLengths1[256] == (byte)0)
{
DeflateDecompressor.ThrowInvalidDataGeneric();
}
this.literalLengthTree = new InflateTree(codeLengths1);
this.distanceTree = new InflateTree(codeLengths2);
}
private bool DecodeDynamicCodes()
{
for (; this.loopCounter < this.codeLengthCodeCount; ++this.loopCounter)
{
int bits = this.input.GetBits(3);
if (bits < 0)
{
return(false);
}
this.codeLengthTreeCodeLength[(int)Tree.BitLengthOrder[this.loopCounter]] = (byte)bits;
}
for (int codeLengthCodeCount = this.codeLengthCodeCount; codeLengthCodeCount < Tree.BitLengthOrder.Length; ++codeLengthCodeCount)
{
this.codeLengthTreeCodeLength[(int)Tree.BitLengthOrder[codeLengthCodeCount]] = (byte)0;
}
this.codeLengthTree = new InflateTree(this.codeLengthTreeCodeLength);
this.codeArraySize = this.literalLengthCodeCount + this.distanceCodeCount;
this.loopCounter = 0;
return(true);
}
private void ProcessBlockType()
{
this.blockType = (DeflateDecompressor.BlockType) this.input.GetBits(2);
switch (this.blockType)
{
case DeflateDecompressor.BlockType.Stored:
this.state = DeflateDecompressor.DecompressorState.UncompressedAligning;
break;
case DeflateDecompressor.BlockType.Static:
this.literalLengthTree = InflateTree.StaticLiteralLengthTree;
this.distanceTree = InflateTree.StaticDistanceTree;
this.state = DeflateDecompressor.DecompressorState.DecodeTop;
break;
case DeflateDecompressor.BlockType.Dynamic:
this.state = DeflateDecompressor.DecompressorState.ReadingNumLitCodes;
break;
default:
DeflateDecompressor.ThrowUnknownBlockType();
break;
}
}
