public void Code(System.IO.Stream inStream, System.IO.Stream outStream,
Int64 inSize, Int64 outSize, ICodeProgress progress)
{
if (m_OutWindow == null)
CreateDictionary();
m_OutWindow.Init(outStream);
if (outSize > 0)
m_OutWindow.SetLimit(outSize);
else
m_OutWindow.SetLimit(Int64.MaxValue - m_OutWindow.Total);
RangeCoder.Decoder rangeDecoder = new RangeCoder.Decoder();
rangeDecoder.Init(inStream);
Code(m_DictionarySize, m_OutWindow, rangeDecoder);
m_OutWindow.ReleaseStream();
rangeDecoder.ReleaseStream();
if (!rangeDecoder.IsFinished || (inSize > 0 && rangeDecoder.Total != inSize))
throw new DataErrorException();
if (m_OutWindow.HasPending)
throw new DataErrorException();
m_OutWindow = null;
}
public void Code(Stream inStream, Stream outStream, long inSize, long outSize, ICodeProgress progress)
{
if (this.m_OutWindow == null)
{
this.CreateDictionary();
}
this.m_OutWindow.Init(outStream);
if (outSize > 0L)
{
this.m_OutWindow.SetLimit(outSize);
}
else
{
this.m_OutWindow.SetLimit(0x7fffffffffffffffL - this.m_OutWindow.Total);
}
SharpCompress.Compressor.LZMA.RangeCoder.Decoder rangeDecoder = new SharpCompress.Compressor.LZMA.RangeCoder.Decoder();
rangeDecoder.Init(inStream);
this.Code(this.m_DictionarySize, this.m_OutWindow, rangeDecoder);
this.m_OutWindow.ReleaseStream();
rangeDecoder.ReleaseStream();
if (!(rangeDecoder.IsFinished && ((inSize <= 0L) || (rangeDecoder.Total == inSize))))
{
throw new DataErrorException();
}
if (this.m_OutWindow.HasPending)
{
throw new DataErrorException();
}
this.m_OutWindow = null;
}
public void Code(System.IO.Stream inStream, System.IO.Stream outStream,
Int64 inSize, Int64 outSize, ICodeProgress progress)
{
if (m_OutWindow == null)
{
CreateDictionary();
}
m_OutWindow.Init(outStream);
if (outSize > 0)
{
m_OutWindow.SetLimit(outSize);
}
else
{
m_OutWindow.SetLimit(Int64.MaxValue - m_OutWindow.Total);
}
RangeCoder.Decoder rangeDecoder = new RangeCoder.Decoder();
rangeDecoder.Init(inStream);
Code(m_DictionarySize, m_OutWindow, rangeDecoder);
m_OutWindow.ReleaseStream();
rangeDecoder.ReleaseStream();
if (!rangeDecoder.IsFinished || (inSize > 0 && rangeDecoder.Total != inSize))
{
throw new DataErrorException();
}
if (m_OutWindow.HasPending)
{
throw new DataErrorException();
}
m_OutWindow = null;
}
public LzmaStream(LzmaEncoderProperties properties, bool isLZMA2, Stream presetDictionary, Stream outputStream)
{
this.outWindow = new OutWindow();
this.rangeDecoder = new SharpCompress.Compressor.LZMA.RangeCoder.Decoder();
this.position = 0L;
this.endReached = false;
this.inputPosition = 0L;
this.uncompressedChunk = false;
this.needDictReset = true;
this.needProps = true;
this.props = new byte[5];
this.isLZMA2 = isLZMA2;
this.availableBytes = 0L;
this.endReached = true;
if (isLZMA2)
{
throw new NotImplementedException();
}
this.encoder = new SharpCompress.Compressor.LZMA.Encoder();
this.encoder.SetCoderProperties(properties.propIDs, properties.properties);
MemoryStream outStream = new MemoryStream(5);
this.encoder.WriteCoderProperties(outStream);
this.props = outStream.ToArray();
this.encoder.SetStreams(null, outputStream, -1L, -1L);
if (presetDictionary != null)
{
this.encoder.Train(presetDictionary);
}
}
void CreateDictionary()
{
if (m_DictionarySize < 0)
{
throw new InvalidParamException();
}
m_OutWindow = new LZ.OutWindow();
int blockSize = Math.Max(m_DictionarySize, (1 << 12));
m_OutWindow.Create(blockSize);
}
void CreateDictionary()
{
if (m_DictionarySize < 0)
throw new InvalidParamException();
m_OutWindow = new LZ.OutWindow();
int blockSize = Math.Max(m_DictionarySize, (1 << 12));
m_OutWindow.Create(blockSize);
}
private void CreateDictionary()
{
if (this.m_DictionarySize < 0)
{
throw new InvalidParamException();
}
this.m_OutWindow = new OutWindow();
int windowSize = Math.Max(this.m_DictionarySize, 0x1000);
this.m_OutWindow.Create(windowSize);
}
internal bool Code(int dictionarySize, OutWindow outWindow, SharpCompress.Compressor.LZMA.RangeCoder.Decoder rangeDecoder)
{
int num = Math.Max(dictionarySize, 1);
outWindow.CopyPending();
while (outWindow.HasSpace)
{
uint posState = ((uint) outWindow.Total) & this.m_PosStateMask;
if (this.m_IsMatchDecoders[(this.state.Index << 4) + posState].Decode(rangeDecoder) == 0)
{
byte num3;
byte @byte = outWindow.GetByte(0);
if (!this.state.IsCharState())
{
num3 = this.m_LiteralDecoder.DecodeWithMatchByte(rangeDecoder, (uint) outWindow.Total, @byte, outWindow.GetByte((int) this.rep0));
}
else
{
num3 = this.m_LiteralDecoder.DecodeNormal(rangeDecoder, (uint) outWindow.Total, @byte);
}
outWindow.PutByte(num3);
this.state.UpdateChar();
}
else
{
uint num5;
if (this.m_IsRepDecoders[this.state.Index].Decode(rangeDecoder) == 1)
{
if (this.m_IsRepG0Decoders[this.state.Index].Decode(rangeDecoder) == 0)
{
if (this.m_IsRep0LongDecoders[(this.state.Index << 4) + posState].Decode(rangeDecoder) == 0)
{
this.state.UpdateShortRep();
outWindow.PutByte(outWindow.GetByte((int) this.rep0));
continue;
}
}
else
{
uint num6;
if (this.m_IsRepG1Decoders[this.state.Index].Decode(rangeDecoder) == 0)
{
num6 = this.rep1;
}
else
{
if (this.m_IsRepG2Decoders[this.state.Index].Decode(rangeDecoder) == 0)
{
num6 = this.rep2;
}
else
{
num6 = this.rep3;
this.rep3 = this.rep2;
}
this.rep2 = this.rep1;
}
this.rep1 = this.rep0;
this.rep0 = num6;
}
num5 = this.m_RepLenDecoder.Decode(rangeDecoder, posState) + 2;
this.state.UpdateRep();
}
else
{
this.rep3 = this.rep2;
this.rep2 = this.rep1;
this.rep1 = this.rep0;
num5 = 2 + this.m_LenDecoder.Decode(rangeDecoder, posState);
this.state.UpdateMatch();
uint num7 = this.m_PosSlotDecoder[Base.GetLenToPosState(num5)].Decode(rangeDecoder);
if (num7 >= 4)
{
int numBitLevels = ((int) (num7 >> 1)) - 1;
this.rep0 = (uint) ((2 | (num7 & 1)) << (numBitLevels & 0x1f));
if (num7 < 14)
{
this.rep0 += BitTreeDecoder.ReverseDecode(this.m_PosDecoders, (this.rep0 - num7) - 1, rangeDecoder, numBitLevels);
}
else
{
this.rep0 += rangeDecoder.DecodeDirectBits(numBitLevels - 4) << 4;
this.rep0 += this.m_PosAlignDecoder.ReverseDecode(rangeDecoder);
}
}
else
{
this.rep0 = num7;
}
}
if ((this.rep0 >= outWindow.Total) || (this.rep0 >= num))
{
if (this.rep0 != uint.MaxValue)
{
throw new DataErrorException();
}
return true;
}
outWindow.CopyBlock((int) this.rep0, (int) num5);
}
}
return false;
}
internal bool Code(int dictionarySize, LZ.OutWindow outWindow, RangeCoder.Decoder rangeDecoder)
{
int dictionarySizeCheck = Math.Max(dictionarySize, 1);
outWindow.CopyPending();
while (outWindow.HasSpace)
{
uint posState = (uint)outWindow.Total & m_PosStateMask;
if (m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(rangeDecoder) == 0)
{
byte b;
byte prevByte = outWindow.GetByte(0);
if (!state.IsCharState())
{
b = m_LiteralDecoder.DecodeWithMatchByte(rangeDecoder,
(uint)outWindow.Total, prevByte, outWindow.GetByte((int)rep0));
}
else
{
b = m_LiteralDecoder.DecodeNormal(rangeDecoder, (uint)outWindow.Total, prevByte);
}
outWindow.PutByte(b);
state.UpdateChar();
}
else
{
uint len;
if (m_IsRepDecoders[state.Index].Decode(rangeDecoder) == 1)
{
if (m_IsRepG0Decoders[state.Index].Decode(rangeDecoder) == 0)
{
if (m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(rangeDecoder) == 0)
{
state.UpdateShortRep();
outWindow.PutByte(outWindow.GetByte((int)rep0));
continue;
}
}
else
{
UInt32 distance;
if (m_IsRepG1Decoders[state.Index].Decode(rangeDecoder) == 0)
{
distance = rep1;
}
else
{
if (m_IsRepG2Decoders[state.Index].Decode(rangeDecoder) == 0)
{
distance = rep2;
}
else
{
distance = rep3;
rep3 = rep2;
}
rep2 = rep1;
}
rep1 = rep0;
rep0 = distance;
}
len = m_RepLenDecoder.Decode(rangeDecoder, posState) + Base.kMatchMinLen;
state.UpdateRep();
}
else
{
rep3 = rep2;
rep2 = rep1;
rep1 = rep0;
len = Base.kMatchMinLen + m_LenDecoder.Decode(rangeDecoder, posState);
state.UpdateMatch();
uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(rangeDecoder);
if (posSlot >= Base.kStartPosModelIndex)
{
int numDirectBits = (int)((posSlot >> 1) - 1);
rep0 = ((2 | (posSlot & 1)) << numDirectBits);
if (posSlot < Base.kEndPosModelIndex)
{
rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
rep0 - posSlot - 1, rangeDecoder, numDirectBits);
}
else
{
rep0 += (rangeDecoder.DecodeDirectBits(
numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits);
rep0 += m_PosAlignDecoder.ReverseDecode(rangeDecoder);
}
}
else
{
rep0 = posSlot;
}
}
if (rep0 >= outWindow.Total || rep0 >= dictionarySizeCheck)
{
if (rep0 == 0xFFFFFFFF)
{
return(true);
}
throw new DataErrorException();
}
outWindow.CopyBlock((int)rep0, (int)len);
}
}
return(false);
}
public LzmaStream(byte[] properties, Stream inputStream, long inputSize, long outputSize, Stream presetDictionary, bool isLZMA2)
{
this.outWindow = new OutWindow();
this.rangeDecoder = new SharpCompress.Compressor.LZMA.RangeCoder.Decoder();
this.position = 0L;
this.endReached = false;
this.inputPosition = 0L;
this.uncompressedChunk = false;
this.needDictReset = true;
this.needProps = true;
this.props = new byte[5];
this.inputStream = inputStream;
this.inputSize = inputSize;
this.outputSize = outputSize;
this.isLZMA2 = isLZMA2;
if (!isLZMA2)
{
this.dictionarySize = BitConverter.ToInt32(properties, 1);
this.outWindow.Create(this.dictionarySize);
if (presetDictionary != null)
{
this.outWindow.Train(presetDictionary);
}
this.rangeDecoder.Init(inputStream);
this.decoder = new SharpCompress.Compressor.LZMA.Decoder();
this.decoder.SetDecoderProperties(properties);
this.props = properties;
this.availableBytes = (outputSize < 0L) ? 0x7fffffffffffffffL : outputSize;
this.rangeDecoderLimit = inputSize;
}
else
{
this.dictionarySize = 2 | (properties[0] & 1);
this.dictionarySize = this.dictionarySize << ((properties[0] >> 1) + 11);
this.outWindow.Create(this.dictionarySize);
if (presetDictionary != null)
{
this.outWindow.Train(presetDictionary);
this.needDictReset = false;
}
this.props = new byte[1];
this.availableBytes = 0L;
}
}