/// <summary>
        /// Codes a stream with LZMA algorithm to an output stream
        /// </summary>
        /// <param name="inStream">The input stream</param>
        /// <param name="inSize">The input size</param>
        /// <param name="outSize">The output size</param>
        /// <param name="outStream">The output stream</param>
        /// <param name="progress">Progress interface</param>
        public void Code(Stream inStream, Stream outStream,
                         Int64 inSize, Int64 outSize, ICodeProgress progress)
        {
            Init(inStream, outStream);

            var state = new Base.State();

            state.Init();
            uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0;

            //Outsize == Int64.MaxValue means this is a streamed LZMA file and we don't know how much we have do. When rep0 is 0xFFFFFFFF we are done decoding.

            UInt64 nowPos64  = 0;
            var    outSize64 = (UInt64)outSize;

            if (nowPos64 < outSize64 && outSize != -1)
            {
                if (m_IsMatchDecoders[state.Index << Base.kNumPosStatesBitsMax].Decode(m_RangeDecoder) != 0)
                {
                    throw new DataErrorException();
                }
                state.UpdateChar();
                byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0, 0);
                m_OutWindow.PutByte(b);
                nowPos64++;
            }
            while (nowPos64 < outSize64 || outSize == -1)
            {
                // UInt64 next = Math.Min(nowPos64 + (1 << 18), outSize64);
                // while(nowPos64 < next)
                {
                    uint posState = (uint)nowPos64 & m_PosStateMask;
                    if (
                        m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) ==
                        0)
                    {
                        byte b;
                        byte prevByte = m_OutWindow.GetByte(0);
                        if (!state.IsCharState())
                        {
                            b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder,
                                                                     (uint)nowPos64, prevByte,
                                                                     m_OutWindow.GetByte(rep0));
                        }
                        else
                        {
                            b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte);
                        }
                        m_OutWindow.PutByte(b);
                        state.UpdateChar();
                        nowPos64++;
                    }
                    else
                    {
                        uint len;
                        if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1)
                        {
                            if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                            {
                                if (
                                    m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(
                                        m_RangeDecoder) == 0)
                                {
                                    state.UpdateShortRep();
                                    m_OutWindow.PutByte(m_OutWindow.GetByte(rep0));
                                    nowPos64++;
                                    continue;
                                }
                            }
                            else
                            {
                                UInt32 distance;
                                if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                                {
                                    distance = rep1;
                                }
                                else
                                {
                                    if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                                    {
                                        distance = rep2;
                                    }
                                    else
                                    {
                                        distance = rep3;
                                        rep3     = rep2;
                                    }
                                    rep2 = rep1;
                                }
                                rep1 = rep0;
                                rep0 = distance;
                            }
                            len = m_RepLenDecoder.Decode(m_RangeDecoder, posState) + Base.kMatchMinLen;
                            state.UpdateRep();
                        }
                        else
                        {
                            rep3 = rep2;
                            rep2 = rep1;
                            rep1 = rep0;
                            len  = Base.kMatchMinLen + m_LenDecoder.Decode(m_RangeDecoder, posState);
                            state.UpdateMatch();
                            uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(m_RangeDecoder);
                            if (posSlot >= Base.kStartPosModelIndex)
                            {
                                var numDirectBits = (int)((posSlot >> 1) - 1);
                                rep0 = ((2 | (posSlot & 1)) << numDirectBits);
                                if (posSlot < Base.kEndPosModelIndex)
                                {
                                    rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
                                                                         rep0 - posSlot - 1, m_RangeDecoder,
                                                                         numDirectBits);
                                }
                                else
                                {
                                    rep0 += (m_RangeDecoder.DecodeDirectBits(
                                                 numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits);
                                    rep0 += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder);
                                }
                            }
                            else
                            {
                                rep0 = posSlot;
                            }
                        }
                        if (rep0 >= m_OutWindow.TrainSize + nowPos64 || rep0 >= m_DictionarySizeCheck)
                        {
                            if (rep0 == 0xFFFFFFFF) //End of file marker
                            {
                                HasFoundEndOfStream = true;
                                break;
                            }
                            throw new DataErrorException();
                        }
                        m_OutWindow.CopyBlock(rep0, len);
                        nowPos64 += len;
                    }
                }
            }
            m_OutWindow.Flush();
            m_OutWindow.ReleaseStream();
            m_RangeDecoder.ReleaseStream();
        }
Esempio n. 2
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        /// <summary>
        /// Codes a stream with LZMA algorithm to an output stream
        /// </summary>
        /// <param name="inStream">The input stream</param>
        /// <param name="inSize">The input size</param>
        /// <param name="outSize">The output size</param>
        /// <param name="outStream">The output stream</param>
        /// <param name="progress">Progress interface</param>
        public void Code(Stream inStream, Stream outStream,
                         Int64 inSize, Int64 outSize, ICodeProgress progress)
        {
            Init(inStream, outStream);

            var state = new Base.State();
            state.Init();
            uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0;

            UInt64 nowPos64 = 0;
            var outSize64 = (UInt64) outSize;
            if (nowPos64 < outSize64)
            {
                if (m_IsMatchDecoders[state.Index << Base.kNumPosStatesBitsMax].Decode(m_RangeDecoder) != 0)
                    throw new DataErrorException();
                state.UpdateChar();
                byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0, 0);
                m_OutWindow.PutByte(b);
                nowPos64++;
            }
            while (nowPos64 < outSize64)
            {
                // UInt64 next = Math.Min(nowPos64 + (1 << 18), outSize64);
                // while(nowPos64 < next)
                {
                    uint posState = (uint) nowPos64 & m_PosStateMask;
                    if (
                        m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) ==
                        0)
                    {
                        byte b;
                        byte prevByte = m_OutWindow.GetByte(0);
                        if (!state.IsCharState())
                            b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder,
                                                                     (uint) nowPos64, prevByte,
                                                                     m_OutWindow.GetByte(rep0));
                        else
                            b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint) nowPos64, prevByte);
                        m_OutWindow.PutByte(b);
                        state.UpdateChar();
                        nowPos64++;
                    }
                    else
                    {
                        uint len;
                        if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1)
                        {
                            if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                            {
                                if (
                                    m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(
                                        m_RangeDecoder) == 0)
                                {
                                    state.UpdateShortRep();
                                    m_OutWindow.PutByte(m_OutWindow.GetByte(rep0));
                                    nowPos64++;
                                    continue;
                                }
                            }
                            else
                            {
                                UInt32 distance;
                                if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                                {
                                    distance = rep1;
                                }
                                else
                                {
                                    if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                                        distance = rep2;
                                    else
                                    {
                                        distance = rep3;
                                        rep3 = rep2;
                                    }
                                    rep2 = rep1;
                                }
                                rep1 = rep0;
                                rep0 = distance;
                            }
                            len = m_RepLenDecoder.Decode(m_RangeDecoder, posState) + Base.kMatchMinLen;
                            state.UpdateRep();
                        }
                        else
                        {
                            rep3 = rep2;
                            rep2 = rep1;
                            rep1 = rep0;
                            len = Base.kMatchMinLen + m_LenDecoder.Decode(m_RangeDecoder, posState);
                            state.UpdateMatch();
                            uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(m_RangeDecoder);
                            if (posSlot >= Base.kStartPosModelIndex)
                            {
                                var numDirectBits = (int) ((posSlot >> 1) - 1);
                                rep0 = ((2 | (posSlot & 1)) << numDirectBits);
                                if (posSlot < Base.kEndPosModelIndex)
                                    rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
                                                                         rep0 - posSlot - 1, m_RangeDecoder,
                                                                         numDirectBits);
                                else
                                {
                                    rep0 += (m_RangeDecoder.DecodeDirectBits(
                                                 numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits);
                                    rep0 += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder);
                                }
                            }
                            else
                                rep0 = posSlot;
                        }
                        if (rep0 >= m_OutWindow.TrainSize + nowPos64 || rep0 >= m_DictionarySizeCheck)
                        {
                            if (rep0 == 0xFFFFFFFF)
                                break;
                            throw new DataErrorException();
                        }
                        m_OutWindow.CopyBlock(rep0, len);
                        nowPos64 += len;
                    }
                }
            }
            m_OutWindow.Flush();
            m_OutWindow.ReleaseStream();
            m_RangeDecoder.ReleaseStream();
        }
Esempio n. 3
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        /// <summary>
        ///     Codes a stream with LZMA algorithm to an output stream
        /// </summary>
        /// <param name="inStream">The input stream</param>
        /// <param name="inSize">The input size</param>
        /// <param name="outSize">The output size</param>
        /// <param name="outStream">The output stream</param>
        /// <param name="progress">Progress interface</param>
        public void Code(Stream inStream, Stream outStream,
                         long inSize, long outSize, ICodeProgress progress)
        {
            Init(inStream, outStream);

            var state = new Base.State();

            state.Init();
            uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0;

            ulong nowPos64  = 0;
            var   outSize64 = (ulong)outSize;

            if (nowPos64 < outSize64)
            {
                if (m_IsMatchDecoders[state.Index << Base.kNumPosStatesBitsMax].Decode(m_RangeDecoder) != 0)
                {
                    throw new DataErrorException();
                }

                state.UpdateChar();
                var b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0, 0);
                m_OutWindow.PutByte(b);
                nowPos64++;
            }

            while (nowPos64 < outSize64)
            // UInt64 next = Math.Min(nowPos64 + (1 << 18), outSize64);
            // while(nowPos64 < next)
            {
                var posState = (uint)nowPos64 & m_PosStateMask;
                if (
                    m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) ==
                    0)
                {
                    byte b;
                    var  prevByte = m_OutWindow.GetByte(0);
                    if (!state.IsCharState())
                    {
                        b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder,
                                                                 (uint)nowPos64, prevByte,
                                                                 m_OutWindow.GetByte(rep0));
                    }
                    else
                    {
                        b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte);
                    }
                    m_OutWindow.PutByte(b);
                    state.UpdateChar();
                    nowPos64++;
                }
                else
                {
                    uint len;
                    if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1)
                    {
                        if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                        {
                            if (
                                m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(
                                    m_RangeDecoder) == 0)
                            {
                                state.UpdateShortRep();
                                m_OutWindow.PutByte(m_OutWindow.GetByte(rep0));
                                nowPos64++;
                                continue;
                            }
                        }
                        else
                        {
                            uint distance;
                            if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                            {
                                distance = rep1;
                            }
                            else
                            {
                                if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0)
                                {
                                    distance = rep2;
                                }
                                else
                                {
                                    distance = rep3;
                                    rep3     = rep2;
                                }

                                rep2 = rep1;
                            }

                            rep1 = rep0;
                            rep0 = distance;
                        }

                        len = m_RepLenDecoder.Decode(m_RangeDecoder, posState) + Base.kMatchMinLen;
                        state.UpdateRep();
                    }
                    else
                    {
                        rep3 = rep2;
                        rep2 = rep1;
                        rep1 = rep0;
                        len  = Base.kMatchMinLen + m_LenDecoder.Decode(m_RangeDecoder, posState);
                        state.UpdateMatch();
                        var posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(m_RangeDecoder);
                        if (posSlot >= Base.kStartPosModelIndex)
                        {
                            var numDirectBits = (int)((posSlot >> 1) - 1);
                            rep0 = (2 | (posSlot & 1)) << numDirectBits;
                            if (posSlot < Base.kEndPosModelIndex)
                            {
                                rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
                                                                     rep0 - posSlot - 1, m_RangeDecoder,
                                                                     numDirectBits);
                            }
                            else
                            {
                                rep0 += m_RangeDecoder.DecodeDirectBits(
                                    numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits;
                                rep0 += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder);
                            }
                        }
                        else
                        {
                            rep0 = posSlot;
                        }
                    }

                    if (rep0 >= m_OutWindow.TrainSize + nowPos64 || rep0 >= m_DictionarySizeCheck)
                    {
                        if (rep0 == 0xFFFFFFFF)
                        {
                            break;
                        }

                        throw new DataErrorException();
                    }

                    m_OutWindow.CopyBlock(rep0, len);
                    nowPos64 += len;
                }
            }

            m_OutWindow.Flush();
            m_OutWindow.ReleaseStream();
            m_RangeDecoder.ReleaseStream();
        }