From a85b565ac9bfcabfdb2c7733a9c4ff69b4213c45 Mon Sep 17 00:00:00 2001 From: Jake Howard Date: Sat, 3 Jan 2015 14:31:22 +0000 Subject: [PATCH] Added 7-zip SDK to project --- Saviour Backup System/7-Zip SDK/CRC.cs | 55 + .../7-Zip SDK/CommandLineParser.cs | 274 +++ Saviour Backup System/7-Zip SDK/ICoder.cs | 157 ++ .../7-Zip SDK/IMatchFinder.cs | 24 + Saviour Backup System/7-Zip SDK/InBuffer.cs | 72 + Saviour Backup System/7-Zip SDK/LzBinTree.cs | 367 ++++ Saviour Backup System/7-Zip SDK/LzInWindow.cs | 132 ++ .../7-Zip SDK/LzOutWindow.cs | 110 ++ Saviour Backup System/7-Zip SDK/LzmaBase.cs | 76 + .../7-Zip SDK/LzmaDecoder.cs | 398 +++++ .../7-Zip SDK/LzmaEncoder.cs | 1480 +++++++++++++++++ Saviour Backup System/7-Zip SDK/OutBuffer.cs | 47 + Saviour Backup System/7-Zip SDK/RangeCoder.cs | 234 +++ .../7-Zip SDK/RangeCoderBit.cs | 117 ++ .../7-Zip SDK/RangeCoderBitTree.cs | 157 ++ .../Saviour Backup System.csproj | 16 + 16 files changed, 3716 insertions(+) create mode 100644 Saviour Backup System/7-Zip SDK/CRC.cs create mode 100644 Saviour Backup System/7-Zip SDK/CommandLineParser.cs create mode 100644 Saviour Backup System/7-Zip SDK/ICoder.cs create mode 100644 Saviour Backup System/7-Zip SDK/IMatchFinder.cs create mode 100644 Saviour Backup System/7-Zip SDK/InBuffer.cs create mode 100644 Saviour Backup System/7-Zip SDK/LzBinTree.cs create mode 100644 Saviour Backup System/7-Zip SDK/LzInWindow.cs create mode 100644 Saviour Backup System/7-Zip SDK/LzOutWindow.cs create mode 100644 Saviour Backup System/7-Zip SDK/LzmaBase.cs create mode 100644 Saviour Backup System/7-Zip SDK/LzmaDecoder.cs create mode 100644 Saviour Backup System/7-Zip SDK/LzmaEncoder.cs create mode 100644 Saviour Backup System/7-Zip SDK/OutBuffer.cs create mode 100644 Saviour Backup System/7-Zip SDK/RangeCoder.cs create mode 100644 Saviour Backup System/7-Zip SDK/RangeCoderBit.cs create mode 100644 Saviour Backup System/7-Zip SDK/RangeCoderBitTree.cs diff --git a/Saviour Backup System/7-Zip SDK/CRC.cs b/Saviour Backup System/7-Zip SDK/CRC.cs new file mode 100644 index 0000000..82cc857 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/CRC.cs @@ -0,0 +1,55 @@ +// Common/CRC.cs + +namespace SevenZip +{ + class CRC + { + public static readonly uint[] Table; + + static CRC() + { + Table = new uint[256]; + const uint kPoly = 0xEDB88320; + for (uint i = 0; i < 256; i++) + { + uint r = i; + for (int j = 0; j < 8; j++) + if ((r & 1) != 0) + r = (r >> 1) ^ kPoly; + else + r >>= 1; + Table[i] = r; + } + } + + uint _value = 0xFFFFFFFF; + + public void Init() { _value = 0xFFFFFFFF; } + + public void UpdateByte(byte b) + { + _value = Table[(((byte)(_value)) ^ b)] ^ (_value >> 8); + } + + public void Update(byte[] data, uint offset, uint size) + { + for (uint i = 0; i < size; i++) + _value = Table[(((byte)(_value)) ^ data[offset + i])] ^ (_value >> 8); + } + + public uint GetDigest() { return _value ^ 0xFFFFFFFF; } + + static uint CalculateDigest(byte[] data, uint offset, uint size) + { + CRC crc = new CRC(); + // crc.Init(); + crc.Update(data, offset, size); + return crc.GetDigest(); + } + + static bool VerifyDigest(uint digest, byte[] data, uint offset, uint size) + { + return (CalculateDigest(data, offset, size) == digest); + } + } +} diff --git a/Saviour Backup System/7-Zip SDK/CommandLineParser.cs b/Saviour Backup System/7-Zip SDK/CommandLineParser.cs new file mode 100644 index 0000000..8eabf59 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/CommandLineParser.cs @@ -0,0 +1,274 @@ +// CommandLineParser.cs + +using System; +using System.Collections; + +namespace SevenZip.CommandLineParser +{ + public enum SwitchType + { + Simple, + PostMinus, + LimitedPostString, + UnLimitedPostString, + PostChar + } + + public class SwitchForm + { + public string IDString; + public SwitchType Type; + public bool Multi; + public int MinLen; + public int MaxLen; + public string PostCharSet; + + public SwitchForm(string idString, SwitchType type, bool multi, + int minLen, int maxLen, string postCharSet) + { + IDString = idString; + Type = type; + Multi = multi; + MinLen = minLen; + MaxLen = maxLen; + PostCharSet = postCharSet; + } + public SwitchForm(string idString, SwitchType type, bool multi, int minLen): + this(idString, type, multi, minLen, 0, "") + { + } + public SwitchForm(string idString, SwitchType type, bool multi): + this(idString, type, multi, 0) + { + } + } + + public class SwitchResult + { + public bool ThereIs; + public bool WithMinus; + public ArrayList PostStrings = new ArrayList(); + public int PostCharIndex; + public SwitchResult() + { + ThereIs = false; + } + } + + public class Parser + { + public ArrayList NonSwitchStrings = new ArrayList(); + SwitchResult[] _switches; + + public Parser(int numSwitches) + { + _switches = new SwitchResult[numSwitches]; + for (int i = 0; i < numSwitches; i++) + _switches[i] = new SwitchResult(); + } + + bool ParseString(string srcString, SwitchForm[] switchForms) + { + int len = srcString.Length; + if (len == 0) + return false; + int pos = 0; + if (!IsItSwitchChar(srcString[pos])) + return false; + while (pos < len) + { + if (IsItSwitchChar(srcString[pos])) + pos++; + const int kNoLen = -1; + int matchedSwitchIndex = 0; + int maxLen = kNoLen; + for (int switchIndex = 0; switchIndex < _switches.Length; switchIndex++) + { + int switchLen = switchForms[switchIndex].IDString.Length; + if (switchLen <= maxLen || pos + switchLen > len) + continue; + if (String.Compare(switchForms[switchIndex].IDString, 0, + srcString, pos, switchLen, true) == 0) + { + matchedSwitchIndex = switchIndex; + maxLen = switchLen; + } + } + if (maxLen == kNoLen) + throw new Exception("maxLen == kNoLen"); + SwitchResult matchedSwitch = _switches[matchedSwitchIndex]; + SwitchForm switchForm = switchForms[matchedSwitchIndex]; + if ((!switchForm.Multi) && matchedSwitch.ThereIs) + throw new Exception("switch must be single"); + matchedSwitch.ThereIs = true; + pos += maxLen; + int tailSize = len - pos; + SwitchType type = switchForm.Type; + switch (type) + { + case SwitchType.PostMinus: + { + if (tailSize == 0) + matchedSwitch.WithMinus = false; + else + { + matchedSwitch.WithMinus = (srcString[pos] == kSwitchMinus); + if (matchedSwitch.WithMinus) + pos++; + } + break; + } + case SwitchType.PostChar: + { + if (tailSize < switchForm.MinLen) + throw new Exception("switch is not full"); + string charSet = switchForm.PostCharSet; + const int kEmptyCharValue = -1; + if (tailSize == 0) + matchedSwitch.PostCharIndex = kEmptyCharValue; + else + { + int index = charSet.IndexOf(srcString[pos]); + if (index < 0) + matchedSwitch.PostCharIndex = kEmptyCharValue; + else + { + matchedSwitch.PostCharIndex = index; + pos++; + } + } + break; + } + case SwitchType.LimitedPostString: + case SwitchType.UnLimitedPostString: + { + int minLen = switchForm.MinLen; + if (tailSize < minLen) + throw new Exception("switch is not full"); + if (type == SwitchType.UnLimitedPostString) + { + matchedSwitch.PostStrings.Add(srcString.Substring(pos)); + return true; + } + String stringSwitch = srcString.Substring(pos, minLen); + pos += minLen; + for (int i = minLen; i < switchForm.MaxLen && pos < len; i++, pos++) + { + char c = srcString[pos]; + if (IsItSwitchChar(c)) + break; + stringSwitch += c; + } + matchedSwitch.PostStrings.Add(stringSwitch); + break; + } + } + } + return true; + + } + + public void ParseStrings(SwitchForm[] switchForms, string[] commandStrings) + { + int numCommandStrings = commandStrings.Length; + bool stopSwitch = false; + for (int i = 0; i < numCommandStrings; i++) + { + string s = commandStrings[i]; + if (stopSwitch) + NonSwitchStrings.Add(s); + else + if (s == kStopSwitchParsing) + stopSwitch = true; + else + if (!ParseString(s, switchForms)) + NonSwitchStrings.Add(s); + } + } + + public SwitchResult this[int index] { get { return _switches[index]; } } + + public static int ParseCommand(CommandForm[] commandForms, string commandString, + out string postString) + { + for (int i = 0; i < commandForms.Length; i++) + { + string id = commandForms[i].IDString; + if (commandForms[i].PostStringMode) + { + if (commandString.IndexOf(id) == 0) + { + postString = commandString.Substring(id.Length); + return i; + } + } + else + if (commandString == id) + { + postString = ""; + return i; + } + } + postString = ""; + return -1; + } + + static bool ParseSubCharsCommand(int numForms, CommandSubCharsSet[] forms, + string commandString, ArrayList indices) + { + indices.Clear(); + int numUsedChars = 0; + for (int i = 0; i < numForms; i++) + { + CommandSubCharsSet charsSet = forms[i]; + int currentIndex = -1; + int len = charsSet.Chars.Length; + for (int j = 0; j < len; j++) + { + char c = charsSet.Chars[j]; + int newIndex = commandString.IndexOf(c); + if (newIndex >= 0) + { + if (currentIndex >= 0) + return false; + if (commandString.IndexOf(c, newIndex + 1) >= 0) + return false; + currentIndex = j; + numUsedChars++; + } + } + if (currentIndex == -1 && !charsSet.EmptyAllowed) + return false; + indices.Add(currentIndex); + } + return (numUsedChars == commandString.Length); + } + const char kSwitchID1 = '-'; + const char kSwitchID2 = '/'; + + const char kSwitchMinus = '-'; + const string kStopSwitchParsing = "--"; + + static bool IsItSwitchChar(char c) + { + return (c == kSwitchID1 || c == kSwitchID2); + } + } + + public class CommandForm + { + public string IDString = ""; + public bool PostStringMode = false; + public CommandForm(string idString, bool postStringMode) + { + IDString = idString; + PostStringMode = postStringMode; + } + } + + class CommandSubCharsSet + { + public string Chars = ""; + public bool EmptyAllowed = false; + } +} diff --git a/Saviour Backup System/7-Zip SDK/ICoder.cs b/Saviour Backup System/7-Zip SDK/ICoder.cs new file mode 100644 index 0000000..c8b95c8 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/ICoder.cs @@ -0,0 +1,157 @@ +// ICoder.h + +using System; + +namespace SevenZip +{ + /// + /// The exception that is thrown when an error in input stream occurs during decoding. + /// + class DataErrorException : ApplicationException + { + public DataErrorException(): base("Data Error") { } + } + + /// + /// The exception that is thrown when the value of an argument is outside the allowable range. + /// + class InvalidParamException : ApplicationException + { + public InvalidParamException(): base("Invalid Parameter") { } + } + + public interface ICodeProgress + { + /// + /// Callback progress. + /// + /// + /// input size. -1 if unknown. + /// + /// + /// output size. -1 if unknown. + /// + void SetProgress(Int64 inSize, Int64 outSize); + }; + + public interface ICoder + { + /// + /// Codes streams. + /// + /// + /// input Stream. + /// + /// + /// output Stream. + /// + /// + /// input Size. -1 if unknown. + /// + /// + /// output Size. -1 if unknown. + /// + /// + /// callback progress reference. + /// + /// + /// if input stream is not valid + /// + void Code(System.IO.Stream inStream, System.IO.Stream outStream, + Int64 inSize, Int64 outSize, ICodeProgress progress); + }; + + /* + public interface ICoder2 + { + void Code(ISequentialInStream []inStreams, + const UInt64 []inSizes, + ISequentialOutStream []outStreams, + UInt64 []outSizes, + ICodeProgress progress); + }; + */ + + /// + /// Provides the fields that represent properties idenitifiers for compressing. + /// + public enum CoderPropID + { + /// + /// Specifies default property. + /// + DefaultProp = 0, + /// + /// Specifies size of dictionary. + /// + DictionarySize, + /// + /// Specifies size of memory for PPM*. + /// + UsedMemorySize, + /// + /// Specifies order for PPM methods. + /// + Order, + /// + /// Specifies Block Size. + /// + BlockSize, + /// + /// Specifies number of postion state bits for LZMA (0 <= x <= 4). + /// + PosStateBits, + /// + /// Specifies number of literal context bits for LZMA (0 <= x <= 8). + /// + LitContextBits, + /// + /// Specifies number of literal position bits for LZMA (0 <= x <= 4). + /// + LitPosBits, + /// + /// Specifies number of fast bytes for LZ*. + /// + NumFastBytes, + /// + /// Specifies match finder. LZMA: "BT2", "BT4" or "BT4B". + /// + MatchFinder, + /// + /// Specifies the number of match finder cyckes. + /// + MatchFinderCycles, + /// + /// Specifies number of passes. + /// + NumPasses, + /// + /// Specifies number of algorithm. + /// + Algorithm, + /// + /// Specifies the number of threads. + /// + NumThreads, + /// + /// Specifies mode with end marker. + /// + EndMarker + }; + + + public interface ISetCoderProperties + { + void SetCoderProperties(CoderPropID[] propIDs, object[] properties); + }; + + public interface IWriteCoderProperties + { + void WriteCoderProperties(System.IO.Stream outStream); + } + + public interface ISetDecoderProperties + { + void SetDecoderProperties(byte[] properties); + } +} diff --git a/Saviour Backup System/7-Zip SDK/IMatchFinder.cs b/Saviour Backup System/7-Zip SDK/IMatchFinder.cs new file mode 100644 index 0000000..10ca2b3 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/IMatchFinder.cs @@ -0,0 +1,24 @@ +// IMatchFinder.cs + +using System; + +namespace SevenZip.Compression.LZ +{ + interface IInWindowStream + { + void SetStream(System.IO.Stream inStream); + void Init(); + void ReleaseStream(); + Byte GetIndexByte(Int32 index); + UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit); + UInt32 GetNumAvailableBytes(); + } + + interface IMatchFinder : IInWindowStream + { + void Create(UInt32 historySize, UInt32 keepAddBufferBefore, + UInt32 matchMaxLen, UInt32 keepAddBufferAfter); + UInt32 GetMatches(UInt32[] distances); + void Skip(UInt32 num); + } +} diff --git a/Saviour Backup System/7-Zip SDK/InBuffer.cs b/Saviour Backup System/7-Zip SDK/InBuffer.cs new file mode 100644 index 0000000..7c51f0b --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/InBuffer.cs @@ -0,0 +1,72 @@ +// InBuffer.cs + +namespace SevenZip.Buffer +{ + public class InBuffer + { + byte[] m_Buffer; + uint m_Pos; + uint m_Limit; + uint m_BufferSize; + System.IO.Stream m_Stream; + bool m_StreamWasExhausted; + ulong m_ProcessedSize; + + public InBuffer(uint bufferSize) + { + m_Buffer = new byte[bufferSize]; + m_BufferSize = bufferSize; + } + + public void Init(System.IO.Stream stream) + { + m_Stream = stream; + m_ProcessedSize = 0; + m_Limit = 0; + m_Pos = 0; + m_StreamWasExhausted = false; + } + + public bool ReadBlock() + { + if (m_StreamWasExhausted) + return false; + m_ProcessedSize += m_Pos; + int aNumProcessedBytes = m_Stream.Read(m_Buffer, 0, (int)m_BufferSize); + m_Pos = 0; + m_Limit = (uint)aNumProcessedBytes; + m_StreamWasExhausted = (aNumProcessedBytes == 0); + return (!m_StreamWasExhausted); + } + + + public void ReleaseStream() + { + // m_Stream.Close(); + m_Stream = null; + } + + public bool ReadByte(byte b) // check it + { + if (m_Pos >= m_Limit) + if (!ReadBlock()) + return false; + b = m_Buffer[m_Pos++]; + return true; + } + + public byte ReadByte() + { + // return (byte)m_Stream.ReadByte(); + if (m_Pos >= m_Limit) + if (!ReadBlock()) + return 0xFF; + return m_Buffer[m_Pos++]; + } + + public ulong GetProcessedSize() + { + return m_ProcessedSize + m_Pos; + } + } +} diff --git a/Saviour Backup System/7-Zip SDK/LzBinTree.cs b/Saviour Backup System/7-Zip SDK/LzBinTree.cs new file mode 100644 index 0000000..c1c006b --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/LzBinTree.cs @@ -0,0 +1,367 @@ +// LzBinTree.cs + +using System; + +namespace SevenZip.Compression.LZ +{ + public class BinTree : InWindow, IMatchFinder + { + UInt32 _cyclicBufferPos; + UInt32 _cyclicBufferSize = 0; + UInt32 _matchMaxLen; + + UInt32[] _son; + UInt32[] _hash; + + UInt32 _cutValue = 0xFF; + UInt32 _hashMask; + UInt32 _hashSizeSum = 0; + + bool HASH_ARRAY = true; + + const UInt32 kHash2Size = 1 << 10; + const UInt32 kHash3Size = 1 << 16; + const UInt32 kBT2HashSize = 1 << 16; + const UInt32 kStartMaxLen = 1; + const UInt32 kHash3Offset = kHash2Size; + const UInt32 kEmptyHashValue = 0; + const UInt32 kMaxValForNormalize = ((UInt32)1 << 31) - 1; + + UInt32 kNumHashDirectBytes = 0; + UInt32 kMinMatchCheck = 4; + UInt32 kFixHashSize = kHash2Size + kHash3Size; + + public void SetType(int numHashBytes) + { + HASH_ARRAY = (numHashBytes > 2); + if (HASH_ARRAY) + { + kNumHashDirectBytes = 0; + kMinMatchCheck = 4; + kFixHashSize = kHash2Size + kHash3Size; + } + else + { + kNumHashDirectBytes = 2; + kMinMatchCheck = 2 + 1; + kFixHashSize = 0; + } + } + + public new void SetStream(System.IO.Stream stream) { base.SetStream(stream); } + public new void ReleaseStream() { base.ReleaseStream(); } + + public new void Init() + { + base.Init(); + for (UInt32 i = 0; i < _hashSizeSum; i++) + _hash[i] = kEmptyHashValue; + _cyclicBufferPos = 0; + ReduceOffsets(-1); + } + + public new void MovePos() + { + if (++_cyclicBufferPos >= _cyclicBufferSize) + _cyclicBufferPos = 0; + base.MovePos(); + if (_pos == kMaxValForNormalize) + Normalize(); + } + + public new Byte GetIndexByte(Int32 index) { return base.GetIndexByte(index); } + + public new UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit) + { return base.GetMatchLen(index, distance, limit); } + + public new UInt32 GetNumAvailableBytes() { return base.GetNumAvailableBytes(); } + + public void Create(UInt32 historySize, UInt32 keepAddBufferBefore, + UInt32 matchMaxLen, UInt32 keepAddBufferAfter) + { + if (historySize > kMaxValForNormalize - 256) + throw new Exception(); + _cutValue = 16 + (matchMaxLen >> 1); + + UInt32 windowReservSize = (historySize + keepAddBufferBefore + + matchMaxLen + keepAddBufferAfter) / 2 + 256; + + base.Create(historySize + keepAddBufferBefore, matchMaxLen + keepAddBufferAfter, windowReservSize); + + _matchMaxLen = matchMaxLen; + + UInt32 cyclicBufferSize = historySize + 1; + if (_cyclicBufferSize != cyclicBufferSize) + _son = new UInt32[(_cyclicBufferSize = cyclicBufferSize) * 2]; + + UInt32 hs = kBT2HashSize; + + if (HASH_ARRAY) + { + hs = historySize - 1; + hs |= (hs >> 1); + hs |= (hs >> 2); + hs |= (hs >> 4); + hs |= (hs >> 8); + hs >>= 1; + hs |= 0xFFFF; + if (hs > (1 << 24)) + hs >>= 1; + _hashMask = hs; + hs++; + hs += kFixHashSize; + } + if (hs != _hashSizeSum) + _hash = new UInt32[_hashSizeSum = hs]; + } + + public UInt32 GetMatches(UInt32[] distances) + { + UInt32 lenLimit; + if (_pos + _matchMaxLen <= _streamPos) + lenLimit = _matchMaxLen; + else + { + lenLimit = _streamPos - _pos; + if (lenLimit < kMinMatchCheck) + { + MovePos(); + return 0; + } + } + + UInt32 offset = 0; + UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0; + UInt32 cur = _bufferOffset + _pos; + UInt32 maxLen = kStartMaxLen; // to avoid items for len < hashSize; + UInt32 hashValue, hash2Value = 0, hash3Value = 0; + + if (HASH_ARRAY) + { + UInt32 temp = CRC.Table[_bufferBase[cur]] ^ _bufferBase[cur + 1]; + hash2Value = temp & (kHash2Size - 1); + temp ^= ((UInt32)(_bufferBase[cur + 2]) << 8); + hash3Value = temp & (kHash3Size - 1); + hashValue = (temp ^ (CRC.Table[_bufferBase[cur + 3]] << 5)) & _hashMask; + } + else + hashValue = _bufferBase[cur] ^ ((UInt32)(_bufferBase[cur + 1]) << 8); + + UInt32 curMatch = _hash[kFixHashSize + hashValue]; + if (HASH_ARRAY) + { + UInt32 curMatch2 = _hash[hash2Value]; + UInt32 curMatch3 = _hash[kHash3Offset + hash3Value]; + _hash[hash2Value] = _pos; + _hash[kHash3Offset + hash3Value] = _pos; + if (curMatch2 > matchMinPos) + if (_bufferBase[_bufferOffset + curMatch2] == _bufferBase[cur]) + { + distances[offset++] = maxLen = 2; + distances[offset++] = _pos - curMatch2 - 1; + } + if (curMatch3 > matchMinPos) + if (_bufferBase[_bufferOffset + curMatch3] == _bufferBase[cur]) + { + if (curMatch3 == curMatch2) + offset -= 2; + distances[offset++] = maxLen = 3; + distances[offset++] = _pos - curMatch3 - 1; + curMatch2 = curMatch3; + } + if (offset != 0 && curMatch2 == curMatch) + { + offset -= 2; + maxLen = kStartMaxLen; + } + } + + _hash[kFixHashSize + hashValue] = _pos; + + UInt32 ptr0 = (_cyclicBufferPos << 1) + 1; + UInt32 ptr1 = (_cyclicBufferPos << 1); + + UInt32 len0, len1; + len0 = len1 = kNumHashDirectBytes; + + if (kNumHashDirectBytes != 0) + { + if (curMatch > matchMinPos) + { + if (_bufferBase[_bufferOffset + curMatch + kNumHashDirectBytes] != + _bufferBase[cur + kNumHashDirectBytes]) + { + distances[offset++] = maxLen = kNumHashDirectBytes; + distances[offset++] = _pos - curMatch - 1; + } + } + } + + UInt32 count = _cutValue; + + while(true) + { + if(curMatch <= matchMinPos || count-- == 0) + { + _son[ptr0] = _son[ptr1] = kEmptyHashValue; + break; + } + UInt32 delta = _pos - curMatch; + UInt32 cyclicPos = ((delta <= _cyclicBufferPos) ? + (_cyclicBufferPos - delta) : + (_cyclicBufferPos - delta + _cyclicBufferSize)) << 1; + + UInt32 pby1 = _bufferOffset + curMatch; + UInt32 len = Math.Min(len0, len1); + if (_bufferBase[pby1 + len] == _bufferBase[cur + len]) + { + while(++len != lenLimit) + if (_bufferBase[pby1 + len] != _bufferBase[cur + len]) + break; + if (maxLen < len) + { + distances[offset++] = maxLen = len; + distances[offset++] = delta - 1; + if (len == lenLimit) + { + _son[ptr1] = _son[cyclicPos]; + _son[ptr0] = _son[cyclicPos + 1]; + break; + } + } + } + if (_bufferBase[pby1 + len] < _bufferBase[cur + len]) + { + _son[ptr1] = curMatch; + ptr1 = cyclicPos + 1; + curMatch = _son[ptr1]; + len1 = len; + } + else + { + _son[ptr0] = curMatch; + ptr0 = cyclicPos; + curMatch = _son[ptr0]; + len0 = len; + } + } + MovePos(); + return offset; + } + + public void Skip(UInt32 num) + { + do + { + UInt32 lenLimit; + if (_pos + _matchMaxLen <= _streamPos) + lenLimit = _matchMaxLen; + else + { + lenLimit = _streamPos - _pos; + if (lenLimit < kMinMatchCheck) + { + MovePos(); + continue; + } + } + + UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0; + UInt32 cur = _bufferOffset + _pos; + + UInt32 hashValue; + + if (HASH_ARRAY) + { + UInt32 temp = CRC.Table[_bufferBase[cur]] ^ _bufferBase[cur + 1]; + UInt32 hash2Value = temp & (kHash2Size - 1); + _hash[hash2Value] = _pos; + temp ^= ((UInt32)(_bufferBase[cur + 2]) << 8); + UInt32 hash3Value = temp & (kHash3Size - 1); + _hash[kHash3Offset + hash3Value] = _pos; + hashValue = (temp ^ (CRC.Table[_bufferBase[cur + 3]] << 5)) & _hashMask; + } + else + hashValue = _bufferBase[cur] ^ ((UInt32)(_bufferBase[cur + 1]) << 8); + + UInt32 curMatch = _hash[kFixHashSize + hashValue]; + _hash[kFixHashSize + hashValue] = _pos; + + UInt32 ptr0 = (_cyclicBufferPos << 1) + 1; + UInt32 ptr1 = (_cyclicBufferPos << 1); + + UInt32 len0, len1; + len0 = len1 = kNumHashDirectBytes; + + UInt32 count = _cutValue; + while (true) + { + if (curMatch <= matchMinPos || count-- == 0) + { + _son[ptr0] = _son[ptr1] = kEmptyHashValue; + break; + } + + UInt32 delta = _pos - curMatch; + UInt32 cyclicPos = ((delta <= _cyclicBufferPos) ? + (_cyclicBufferPos - delta) : + (_cyclicBufferPos - delta + _cyclicBufferSize)) << 1; + + UInt32 pby1 = _bufferOffset + curMatch; + UInt32 len = Math.Min(len0, len1); + if (_bufferBase[pby1 + len] == _bufferBase[cur + len]) + { + while (++len != lenLimit) + if (_bufferBase[pby1 + len] != _bufferBase[cur + len]) + break; + if (len == lenLimit) + { + _son[ptr1] = _son[cyclicPos]; + _son[ptr0] = _son[cyclicPos + 1]; + break; + } + } + if (_bufferBase[pby1 + len] < _bufferBase[cur + len]) + { + _son[ptr1] = curMatch; + ptr1 = cyclicPos + 1; + curMatch = _son[ptr1]; + len1 = len; + } + else + { + _son[ptr0] = curMatch; + ptr0 = cyclicPos; + curMatch = _son[ptr0]; + len0 = len; + } + } + MovePos(); + } + while (--num != 0); + } + + void NormalizeLinks(UInt32[] items, UInt32 numItems, UInt32 subValue) + { + for (UInt32 i = 0; i < numItems; i++) + { + UInt32 value = items[i]; + if (value <= subValue) + value = kEmptyHashValue; + else + value -= subValue; + items[i] = value; + } + } + + void Normalize() + { + UInt32 subValue = _pos - _cyclicBufferSize; + NormalizeLinks(_son, _cyclicBufferSize * 2, subValue); + NormalizeLinks(_hash, _hashSizeSum, subValue); + ReduceOffsets((Int32)subValue); + } + + public void SetCutValue(UInt32 cutValue) { _cutValue = cutValue; } + } +} diff --git a/Saviour Backup System/7-Zip SDK/LzInWindow.cs b/Saviour Backup System/7-Zip SDK/LzInWindow.cs new file mode 100644 index 0000000..52d23ce --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/LzInWindow.cs @@ -0,0 +1,132 @@ +// LzInWindow.cs + +using System; + +namespace SevenZip.Compression.LZ +{ + public class InWindow + { + public Byte[] _bufferBase = null; // pointer to buffer with data + System.IO.Stream _stream; + UInt32 _posLimit; // offset (from _buffer) of first byte when new block reading must be done + bool _streamEndWasReached; // if (true) then _streamPos shows real end of stream + + UInt32 _pointerToLastSafePosition; + + public UInt32 _bufferOffset; + + public UInt32 _blockSize; // Size of Allocated memory block + public UInt32 _pos; // offset (from _buffer) of curent byte + UInt32 _keepSizeBefore; // how many BYTEs must be kept in buffer before _pos + UInt32 _keepSizeAfter; // how many BYTEs must be kept buffer after _pos + public UInt32 _streamPos; // offset (from _buffer) of first not read byte from Stream + + public void MoveBlock() + { + UInt32 offset = (UInt32)(_bufferOffset) + _pos - _keepSizeBefore; + // we need one additional byte, since MovePos moves on 1 byte. + if (offset > 0) + offset--; + + UInt32 numBytes = (UInt32)(_bufferOffset) + _streamPos - offset; + + // check negative offset ???? + for (UInt32 i = 0; i < numBytes; i++) + _bufferBase[i] = _bufferBase[offset + i]; + _bufferOffset -= offset; + } + + public virtual void ReadBlock() + { + if (_streamEndWasReached) + return; + while (true) + { + int size = (int)((0 - _bufferOffset) + _blockSize - _streamPos); + if (size == 0) + return; + int numReadBytes = _stream.Read(_bufferBase, (int)(_bufferOffset + _streamPos), size); + if (numReadBytes == 0) + { + _posLimit = _streamPos; + UInt32 pointerToPostion = _bufferOffset + _posLimit; + if (pointerToPostion > _pointerToLastSafePosition) + _posLimit = (UInt32)(_pointerToLastSafePosition - _bufferOffset); + + _streamEndWasReached = true; + return; + } + _streamPos += (UInt32)numReadBytes; + if (_streamPos >= _pos + _keepSizeAfter) + _posLimit = _streamPos - _keepSizeAfter; + } + } + + void Free() { _bufferBase = null; } + + public void Create(UInt32 keepSizeBefore, UInt32 keepSizeAfter, UInt32 keepSizeReserv) + { + _keepSizeBefore = keepSizeBefore; + _keepSizeAfter = keepSizeAfter; + UInt32 blockSize = keepSizeBefore + keepSizeAfter + keepSizeReserv; + if (_bufferBase == null || _blockSize != blockSize) + { + Free(); + _blockSize = blockSize; + _bufferBase = new Byte[_blockSize]; + } + _pointerToLastSafePosition = _blockSize - keepSizeAfter; + } + + public void SetStream(System.IO.Stream stream) { _stream = stream; } + public void ReleaseStream() { _stream = null; } + + public void Init() + { + _bufferOffset = 0; + _pos = 0; + _streamPos = 0; + _streamEndWasReached = false; + ReadBlock(); + } + + public void MovePos() + { + _pos++; + if (_pos > _posLimit) + { + UInt32 pointerToPostion = _bufferOffset + _pos; + if (pointerToPostion > _pointerToLastSafePosition) + MoveBlock(); + ReadBlock(); + } + } + + public Byte GetIndexByte(Int32 index) { return _bufferBase[_bufferOffset + _pos + index]; } + + // index + limit have not to exceed _keepSizeAfter; + public UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit) + { + if (_streamEndWasReached) + if ((_pos + index) + limit > _streamPos) + limit = _streamPos - (UInt32)(_pos + index); + distance++; + // Byte *pby = _buffer + (size_t)_pos + index; + UInt32 pby = _bufferOffset + _pos + (UInt32)index; + + UInt32 i; + for (i = 0; i < limit && _bufferBase[pby + i] == _bufferBase[pby + i - distance]; i++); + return i; + } + + public UInt32 GetNumAvailableBytes() { return _streamPos - _pos; } + + public void ReduceOffsets(Int32 subValue) + { + _bufferOffset += (UInt32)subValue; + _posLimit -= (UInt32)subValue; + _pos -= (UInt32)subValue; + _streamPos -= (UInt32)subValue; + } + } +} diff --git a/Saviour Backup System/7-Zip SDK/LzOutWindow.cs b/Saviour Backup System/7-Zip SDK/LzOutWindow.cs new file mode 100644 index 0000000..c998584 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/LzOutWindow.cs @@ -0,0 +1,110 @@ +// LzOutWindow.cs + +namespace SevenZip.Compression.LZ +{ + public class OutWindow + { + byte[] _buffer = null; + uint _pos; + uint _windowSize = 0; + uint _streamPos; + System.IO.Stream _stream; + + public uint TrainSize = 0; + + public void Create(uint windowSize) + { + if (_windowSize != windowSize) + { + // System.GC.Collect(); + _buffer = new byte[windowSize]; + } + _windowSize = windowSize; + _pos = 0; + _streamPos = 0; + } + + public void Init(System.IO.Stream stream, bool solid) + { + ReleaseStream(); + _stream = stream; + if (!solid) + { + _streamPos = 0; + _pos = 0; + TrainSize = 0; + } + } + + public bool Train(System.IO.Stream stream) + { + long len = stream.Length; + uint size = (len < _windowSize) ? (uint)len : _windowSize; + TrainSize = size; + stream.Position = len - size; + _streamPos = _pos = 0; + while (size > 0) + { + uint curSize = _windowSize - _pos; + if (size < curSize) + curSize = size; + int numReadBytes = stream.Read(_buffer, (int)_pos, (int)curSize); + if (numReadBytes == 0) + return false; + size -= (uint)numReadBytes; + _pos += (uint)numReadBytes; + _streamPos += (uint)numReadBytes; + if (_pos == _windowSize) + _streamPos = _pos = 0; + } + return true; + } + + public void ReleaseStream() + { + Flush(); + _stream = null; + } + + public void Flush() + { + uint size = _pos - _streamPos; + if (size == 0) + return; + _stream.Write(_buffer, (int)_streamPos, (int)size); + if (_pos >= _windowSize) + _pos = 0; + _streamPos = _pos; + } + + public void CopyBlock(uint distance, uint len) + { + uint pos = _pos - distance - 1; + if (pos >= _windowSize) + pos += _windowSize; + for (; len > 0; len--) + { + if (pos >= _windowSize) + pos = 0; + _buffer[_pos++] = _buffer[pos++]; + if (_pos >= _windowSize) + Flush(); + } + } + + public void PutByte(byte b) + { + _buffer[_pos++] = b; + if (_pos >= _windowSize) + Flush(); + } + + public byte GetByte(uint distance) + { + uint pos = _pos - distance - 1; + if (pos >= _windowSize) + pos += _windowSize; + return _buffer[pos]; + } + } +} diff --git a/Saviour Backup System/7-Zip SDK/LzmaBase.cs b/Saviour Backup System/7-Zip SDK/LzmaBase.cs new file mode 100644 index 0000000..c7bca86 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/LzmaBase.cs @@ -0,0 +1,76 @@ +// LzmaBase.cs + +namespace SevenZip.Compression.LZMA +{ + internal abstract class Base + { + public const uint kNumRepDistances = 4; + public const uint kNumStates = 12; + + // static byte []kLiteralNextStates = {0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 4, 5}; + // static byte []kMatchNextStates = {7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10}; + // static byte []kRepNextStates = {8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11}; + // static byte []kShortRepNextStates = {9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11}; + + public struct State + { + public uint Index; + public void Init() { Index = 0; } + public void UpdateChar() + { + if (Index < 4) Index = 0; + else if (Index < 10) Index -= 3; + else Index -= 6; + } + public void UpdateMatch() { Index = (uint)(Index < 7 ? 7 : 10); } + public void UpdateRep() { Index = (uint)(Index < 7 ? 8 : 11); } + public void UpdateShortRep() { Index = (uint)(Index < 7 ? 9 : 11); } + public bool IsCharState() { return Index < 7; } + } + + public const int kNumPosSlotBits = 6; + public const int kDicLogSizeMin = 0; + // public const int kDicLogSizeMax = 30; + // public const uint kDistTableSizeMax = kDicLogSizeMax * 2; + + public const int kNumLenToPosStatesBits = 2; // it's for speed optimization + public const uint kNumLenToPosStates = 1 << kNumLenToPosStatesBits; + + public const uint kMatchMinLen = 2; + + public static uint GetLenToPosState(uint len) + { + len -= kMatchMinLen; + if (len < kNumLenToPosStates) + return len; + return (uint)(kNumLenToPosStates - 1); + } + + public const int kNumAlignBits = 4; + public const uint kAlignTableSize = 1 << kNumAlignBits; + public const uint kAlignMask = (kAlignTableSize - 1); + + public const uint kStartPosModelIndex = 4; + public const uint kEndPosModelIndex = 14; + public const uint kNumPosModels = kEndPosModelIndex - kStartPosModelIndex; + + public const uint kNumFullDistances = 1 << ((int)kEndPosModelIndex / 2); + + public const uint kNumLitPosStatesBitsEncodingMax = 4; + public const uint kNumLitContextBitsMax = 8; + + public const int kNumPosStatesBitsMax = 4; + public const uint kNumPosStatesMax = (1 << kNumPosStatesBitsMax); + public const int kNumPosStatesBitsEncodingMax = 4; + public const uint kNumPosStatesEncodingMax = (1 << kNumPosStatesBitsEncodingMax); + + public const int kNumLowLenBits = 3; + public const int kNumMidLenBits = 3; + public const int kNumHighLenBits = 8; + public const uint kNumLowLenSymbols = 1 << kNumLowLenBits; + public const uint kNumMidLenSymbols = 1 << kNumMidLenBits; + public const uint kNumLenSymbols = kNumLowLenSymbols + kNumMidLenSymbols + + (1 << kNumHighLenBits); + public const uint kMatchMaxLen = kMatchMinLen + kNumLenSymbols - 1; + } +} diff --git a/Saviour Backup System/7-Zip SDK/LzmaDecoder.cs b/Saviour Backup System/7-Zip SDK/LzmaDecoder.cs new file mode 100644 index 0000000..a9be39f --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/LzmaDecoder.cs @@ -0,0 +1,398 @@ +// LzmaDecoder.cs + +using System; + +namespace SevenZip.Compression.LZMA +{ + using RangeCoder; + + public class Decoder : ICoder, ISetDecoderProperties // ,System.IO.Stream + { + class LenDecoder + { + BitDecoder m_Choice = new BitDecoder(); + BitDecoder m_Choice2 = new BitDecoder(); + BitTreeDecoder[] m_LowCoder = new BitTreeDecoder[Base.kNumPosStatesMax]; + BitTreeDecoder[] m_MidCoder = new BitTreeDecoder[Base.kNumPosStatesMax]; + BitTreeDecoder m_HighCoder = new BitTreeDecoder(Base.kNumHighLenBits); + uint m_NumPosStates = 0; + + public void Create(uint numPosStates) + { + for (uint posState = m_NumPosStates; posState < numPosStates; posState++) + { + m_LowCoder[posState] = new BitTreeDecoder(Base.kNumLowLenBits); + m_MidCoder[posState] = new BitTreeDecoder(Base.kNumMidLenBits); + } + m_NumPosStates = numPosStates; + } + + public void Init() + { + m_Choice.Init(); + for (uint posState = 0; posState < m_NumPosStates; posState++) + { + m_LowCoder[posState].Init(); + m_MidCoder[posState].Init(); + } + m_Choice2.Init(); + m_HighCoder.Init(); + } + + public uint Decode(RangeCoder.Decoder rangeDecoder, uint posState) + { + if (m_Choice.Decode(rangeDecoder) == 0) + return m_LowCoder[posState].Decode(rangeDecoder); + else + { + uint symbol = Base.kNumLowLenSymbols; + if (m_Choice2.Decode(rangeDecoder) == 0) + symbol += m_MidCoder[posState].Decode(rangeDecoder); + else + { + symbol += Base.kNumMidLenSymbols; + symbol += m_HighCoder.Decode(rangeDecoder); + } + return symbol; + } + } + } + + class LiteralDecoder + { + struct Decoder2 + { + BitDecoder[] m_Decoders; + public void Create() { m_Decoders = new BitDecoder[0x300]; } + public void Init() { for (int i = 0; i < 0x300; i++) m_Decoders[i].Init(); } + + public byte DecodeNormal(RangeCoder.Decoder rangeDecoder) + { + uint symbol = 1; + do + symbol = (symbol << 1) | m_Decoders[symbol].Decode(rangeDecoder); + while (symbol < 0x100); + return (byte)symbol; + } + + public byte DecodeWithMatchByte(RangeCoder.Decoder rangeDecoder, byte matchByte) + { + uint symbol = 1; + do + { + uint matchBit = (uint)(matchByte >> 7) & 1; + matchByte <<= 1; + uint bit = m_Decoders[((1 + matchBit) << 8) + symbol].Decode(rangeDecoder); + symbol = (symbol << 1) | bit; + if (matchBit != bit) + { + while (symbol < 0x100) + symbol = (symbol << 1) | m_Decoders[symbol].Decode(rangeDecoder); + break; + } + } + while (symbol < 0x100); + return (byte)symbol; + } + } + + Decoder2[] m_Coders; + int m_NumPrevBits; + int m_NumPosBits; + uint m_PosMask; + + public void Create(int numPosBits, int numPrevBits) + { + if (m_Coders != null && m_NumPrevBits == numPrevBits && + m_NumPosBits == numPosBits) + return; + m_NumPosBits = numPosBits; + m_PosMask = ((uint)1 << numPosBits) - 1; + m_NumPrevBits = numPrevBits; + uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits); + m_Coders = new Decoder2[numStates]; + for (uint i = 0; i < numStates; i++) + m_Coders[i].Create(); + } + + public void Init() + { + uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits); + for (uint i = 0; i < numStates; i++) + m_Coders[i].Init(); + } + + uint GetState(uint pos, byte prevByte) + { return ((pos & m_PosMask) << m_NumPrevBits) + (uint)(prevByte >> (8 - m_NumPrevBits)); } + + public byte DecodeNormal(RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte) + { return m_Coders[GetState(pos, prevByte)].DecodeNormal(rangeDecoder); } + + public byte DecodeWithMatchByte(RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte, byte matchByte) + { return m_Coders[GetState(pos, prevByte)].DecodeWithMatchByte(rangeDecoder, matchByte); } + }; + + LZ.OutWindow m_OutWindow = new LZ.OutWindow(); + RangeCoder.Decoder m_RangeDecoder = new RangeCoder.Decoder(); + + BitDecoder[] m_IsMatchDecoders = new BitDecoder[Base.kNumStates << Base.kNumPosStatesBitsMax]; + BitDecoder[] m_IsRepDecoders = new BitDecoder[Base.kNumStates]; + BitDecoder[] m_IsRepG0Decoders = new BitDecoder[Base.kNumStates]; + BitDecoder[] m_IsRepG1Decoders = new BitDecoder[Base.kNumStates]; + BitDecoder[] m_IsRepG2Decoders = new BitDecoder[Base.kNumStates]; + BitDecoder[] m_IsRep0LongDecoders = new BitDecoder[Base.kNumStates << Base.kNumPosStatesBitsMax]; + + BitTreeDecoder[] m_PosSlotDecoder = new BitTreeDecoder[Base.kNumLenToPosStates]; + BitDecoder[] m_PosDecoders = new BitDecoder[Base.kNumFullDistances - Base.kEndPosModelIndex]; + + BitTreeDecoder m_PosAlignDecoder = new BitTreeDecoder(Base.kNumAlignBits); + + LenDecoder m_LenDecoder = new LenDecoder(); + LenDecoder m_RepLenDecoder = new LenDecoder(); + + LiteralDecoder m_LiteralDecoder = new LiteralDecoder(); + + uint m_DictionarySize; + uint m_DictionarySizeCheck; + + uint m_PosStateMask; + + public Decoder() + { + m_DictionarySize = 0xFFFFFFFF; + for (int i = 0; i < Base.kNumLenToPosStates; i++) + m_PosSlotDecoder[i] = new BitTreeDecoder(Base.kNumPosSlotBits); + } + + void SetDictionarySize(uint dictionarySize) + { + if (m_DictionarySize != dictionarySize) + { + m_DictionarySize = dictionarySize; + m_DictionarySizeCheck = Math.Max(m_DictionarySize, 1); + uint blockSize = Math.Max(m_DictionarySizeCheck, (1 << 12)); + m_OutWindow.Create(blockSize); + } + } + + void SetLiteralProperties(int lp, int lc) + { + if (lp > 8) + throw new InvalidParamException(); + if (lc > 8) + throw new InvalidParamException(); + m_LiteralDecoder.Create(lp, lc); + } + + void SetPosBitsProperties(int pb) + { + if (pb > Base.kNumPosStatesBitsMax) + throw new InvalidParamException(); + uint numPosStates = (uint)1 << pb; + m_LenDecoder.Create(numPosStates); + m_RepLenDecoder.Create(numPosStates); + m_PosStateMask = numPosStates - 1; + } + + bool _solid = false; + void Init(System.IO.Stream inStream, System.IO.Stream outStream) + { + m_RangeDecoder.Init(inStream); + m_OutWindow.Init(outStream, _solid); + + uint i; + for (i = 0; i < Base.kNumStates; i++) + { + for (uint j = 0; j <= m_PosStateMask; j++) + { + uint index = (i << Base.kNumPosStatesBitsMax) + j; + m_IsMatchDecoders[index].Init(); + m_IsRep0LongDecoders[index].Init(); + } + m_IsRepDecoders[i].Init(); + m_IsRepG0Decoders[i].Init(); + m_IsRepG1Decoders[i].Init(); + m_IsRepG2Decoders[i].Init(); + } + + m_LiteralDecoder.Init(); + for (i = 0; i < Base.kNumLenToPosStates; i++) + m_PosSlotDecoder[i].Init(); + // m_PosSpecDecoder.Init(); + for (i = 0; i < Base.kNumFullDistances - Base.kEndPosModelIndex; i++) + m_PosDecoders[i].Init(); + + m_LenDecoder.Init(); + m_RepLenDecoder.Init(); + m_PosAlignDecoder.Init(); + } + + public void Code(System.IO.Stream inStream, System.IO.Stream outStream, + Int64 inSize, Int64 outSize, ICodeProgress progress) + { + Init(inStream, outStream); + + Base.State state = new Base.State(); + state.Init(); + uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0; + + UInt64 nowPos64 = 0; + UInt64 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) + { + int 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(); + } + + public void SetDecoderProperties(byte[] properties) + { + if (properties.Length < 5) + throw new InvalidParamException(); + int lc = properties[0] % 9; + int remainder = properties[0] / 9; + int lp = remainder % 5; + int pb = remainder / 5; + if (pb > Base.kNumPosStatesBitsMax) + throw new InvalidParamException(); + UInt32 dictionarySize = 0; + for (int i = 0; i < 4; i++) + dictionarySize += ((UInt32)(properties[1 + i])) << (i * 8); + SetDictionarySize(dictionarySize); + SetLiteralProperties(lp, lc); + SetPosBitsProperties(pb); + } + + public bool Train(System.IO.Stream stream) + { + _solid = true; + return m_OutWindow.Train(stream); + } + + /* + public override bool CanRead { get { return true; }} + public override bool CanWrite { get { return true; }} + public override bool CanSeek { get { return true; }} + public override long Length { get { return 0; }} + public override long Position + { + get { return 0; } + set { } + } + public override void Flush() { } + public override int Read(byte[] buffer, int offset, int count) + { + return 0; + } + public override void Write(byte[] buffer, int offset, int count) + { + } + public override long Seek(long offset, System.IO.SeekOrigin origin) + { + return 0; + } + public override void SetLength(long value) {} + */ + } +} diff --git a/Saviour Backup System/7-Zip SDK/LzmaEncoder.cs b/Saviour Backup System/7-Zip SDK/LzmaEncoder.cs new file mode 100644 index 0000000..0237c51 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/LzmaEncoder.cs @@ -0,0 +1,1480 @@ +// LzmaEncoder.cs + +using System; + +namespace SevenZip.Compression.LZMA +{ + using RangeCoder; + + public class Encoder : ICoder, ISetCoderProperties, IWriteCoderProperties + { + enum EMatchFinderType + { + BT2, + BT4, + }; + + const UInt32 kIfinityPrice = 0xFFFFFFF; + + static Byte[] g_FastPos = new Byte[1 << 11]; + + static Encoder() + { + const Byte kFastSlots = 22; + int c = 2; + g_FastPos[0] = 0; + g_FastPos[1] = 1; + for (Byte slotFast = 2; slotFast < kFastSlots; slotFast++) + { + UInt32 k = ((UInt32)1 << ((slotFast >> 1) - 1)); + for (UInt32 j = 0; j < k; j++, c++) + g_FastPos[c] = slotFast; + } + } + + static UInt32 GetPosSlot(UInt32 pos) + { + if (pos < (1 << 11)) + return g_FastPos[pos]; + if (pos < (1 << 21)) + return (UInt32)(g_FastPos[pos >> 10] + 20); + return (UInt32)(g_FastPos[pos >> 20] + 40); + } + + static UInt32 GetPosSlot2(UInt32 pos) + { + if (pos < (1 << 17)) + return (UInt32)(g_FastPos[pos >> 6] + 12); + if (pos < (1 << 27)) + return (UInt32)(g_FastPos[pos >> 16] + 32); + return (UInt32)(g_FastPos[pos >> 26] + 52); + } + + Base.State _state = new Base.State(); + Byte _previousByte; + UInt32[] _repDistances = new UInt32[Base.kNumRepDistances]; + + void BaseInit() + { + _state.Init(); + _previousByte = 0; + for (UInt32 i = 0; i < Base.kNumRepDistances; i++) + _repDistances[i] = 0; + } + + const int kDefaultDictionaryLogSize = 22; + const UInt32 kNumFastBytesDefault = 0x20; + + class LiteralEncoder + { + public struct Encoder2 + { + BitEncoder[] m_Encoders; + + public void Create() { m_Encoders = new BitEncoder[0x300]; } + + public void Init() { for (int i = 0; i < 0x300; i++) m_Encoders[i].Init(); } + + public void Encode(RangeCoder.Encoder rangeEncoder, byte symbol) + { + uint context = 1; + for (int i = 7; i >= 0; i--) + { + uint bit = (uint)((symbol >> i) & 1); + m_Encoders[context].Encode(rangeEncoder, bit); + context = (context << 1) | bit; + } + } + + public void EncodeMatched(RangeCoder.Encoder rangeEncoder, byte matchByte, byte symbol) + { + uint context = 1; + bool same = true; + for (int i = 7; i >= 0; i--) + { + uint bit = (uint)((symbol >> i) & 1); + uint state = context; + if (same) + { + uint matchBit = (uint)((matchByte >> i) & 1); + state += ((1 + matchBit) << 8); + same = (matchBit == bit); + } + m_Encoders[state].Encode(rangeEncoder, bit); + context = (context << 1) | bit; + } + } + + public uint GetPrice(bool matchMode, byte matchByte, byte symbol) + { + uint price = 0; + uint context = 1; + int i = 7; + if (matchMode) + { + for (; i >= 0; i--) + { + uint matchBit = (uint)(matchByte >> i) & 1; + uint bit = (uint)(symbol >> i) & 1; + price += m_Encoders[((1 + matchBit) << 8) + context].GetPrice(bit); + context = (context << 1) | bit; + if (matchBit != bit) + { + i--; + break; + } + } + } + for (; i >= 0; i--) + { + uint bit = (uint)(symbol >> i) & 1; + price += m_Encoders[context].GetPrice(bit); + context = (context << 1) | bit; + } + return price; + } + } + + Encoder2[] m_Coders; + int m_NumPrevBits; + int m_NumPosBits; + uint m_PosMask; + + public void Create(int numPosBits, int numPrevBits) + { + if (m_Coders != null && m_NumPrevBits == numPrevBits && m_NumPosBits == numPosBits) + return; + m_NumPosBits = numPosBits; + m_PosMask = ((uint)1 << numPosBits) - 1; + m_NumPrevBits = numPrevBits; + uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits); + m_Coders = new Encoder2[numStates]; + for (uint i = 0; i < numStates; i++) + m_Coders[i].Create(); + } + + public void Init() + { + uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits); + for (uint i = 0; i < numStates; i++) + m_Coders[i].Init(); + } + + public Encoder2 GetSubCoder(UInt32 pos, Byte prevByte) + { return m_Coders[((pos & m_PosMask) << m_NumPrevBits) + (uint)(prevByte >> (8 - m_NumPrevBits))]; } + } + + class LenEncoder + { + RangeCoder.BitEncoder _choice = new RangeCoder.BitEncoder(); + RangeCoder.BitEncoder _choice2 = new RangeCoder.BitEncoder(); + RangeCoder.BitTreeEncoder[] _lowCoder = new RangeCoder.BitTreeEncoder[Base.kNumPosStatesEncodingMax]; + RangeCoder.BitTreeEncoder[] _midCoder = new RangeCoder.BitTreeEncoder[Base.kNumPosStatesEncodingMax]; + RangeCoder.BitTreeEncoder _highCoder = new RangeCoder.BitTreeEncoder(Base.kNumHighLenBits); + + public LenEncoder() + { + for (UInt32 posState = 0; posState < Base.kNumPosStatesEncodingMax; posState++) + { + _lowCoder[posState] = new RangeCoder.BitTreeEncoder(Base.kNumLowLenBits); + _midCoder[posState] = new RangeCoder.BitTreeEncoder(Base.kNumMidLenBits); + } + } + + public void Init(UInt32 numPosStates) + { + _choice.Init(); + _choice2.Init(); + for (UInt32 posState = 0; posState < numPosStates; posState++) + { + _lowCoder[posState].Init(); + _midCoder[posState].Init(); + } + _highCoder.Init(); + } + + public void Encode(RangeCoder.Encoder rangeEncoder, UInt32 symbol, UInt32 posState) + { + if (symbol < Base.kNumLowLenSymbols) + { + _choice.Encode(rangeEncoder, 0); + _lowCoder[posState].Encode(rangeEncoder, symbol); + } + else + { + symbol -= Base.kNumLowLenSymbols; + _choice.Encode(rangeEncoder, 1); + if (symbol < Base.kNumMidLenSymbols) + { + _choice2.Encode(rangeEncoder, 0); + _midCoder[posState].Encode(rangeEncoder, symbol); + } + else + { + _choice2.Encode(rangeEncoder, 1); + _highCoder.Encode(rangeEncoder, symbol - Base.kNumMidLenSymbols); + } + } + } + + public void SetPrices(UInt32 posState, UInt32 numSymbols, UInt32[] prices, UInt32 st) + { + UInt32 a0 = _choice.GetPrice0(); + UInt32 a1 = _choice.GetPrice1(); + UInt32 b0 = a1 + _choice2.GetPrice0(); + UInt32 b1 = a1 + _choice2.GetPrice1(); + UInt32 i = 0; + for (i = 0; i < Base.kNumLowLenSymbols; i++) + { + if (i >= numSymbols) + return; + prices[st + i] = a0 + _lowCoder[posState].GetPrice(i); + } + for (; i < Base.kNumLowLenSymbols + Base.kNumMidLenSymbols; i++) + { + if (i >= numSymbols) + return; + prices[st + i] = b0 + _midCoder[posState].GetPrice(i - Base.kNumLowLenSymbols); + } + for (; i < numSymbols; i++) + prices[st + i] = b1 + _highCoder.GetPrice(i - Base.kNumLowLenSymbols - Base.kNumMidLenSymbols); + } + }; + + const UInt32 kNumLenSpecSymbols = Base.kNumLowLenSymbols + Base.kNumMidLenSymbols; + + class LenPriceTableEncoder : LenEncoder + { + UInt32[] _prices = new UInt32[Base.kNumLenSymbols << Base.kNumPosStatesBitsEncodingMax]; + UInt32 _tableSize; + UInt32[] _counters = new UInt32[Base.kNumPosStatesEncodingMax]; + + public void SetTableSize(UInt32 tableSize) { _tableSize = tableSize; } + + public UInt32 GetPrice(UInt32 symbol, UInt32 posState) + { + return _prices[posState * Base.kNumLenSymbols + symbol]; + } + + void UpdateTable(UInt32 posState) + { + SetPrices(posState, _tableSize, _prices, posState * Base.kNumLenSymbols); + _counters[posState] = _tableSize; + } + + public void UpdateTables(UInt32 numPosStates) + { + for (UInt32 posState = 0; posState < numPosStates; posState++) + UpdateTable(posState); + } + + public new void Encode(RangeCoder.Encoder rangeEncoder, UInt32 symbol, UInt32 posState) + { + base.Encode(rangeEncoder, symbol, posState); + if (--_counters[posState] == 0) + UpdateTable(posState); + } + } + + const UInt32 kNumOpts = 1 << 12; + class Optimal + { + public Base.State State; + + public bool Prev1IsChar; + public bool Prev2; + + public UInt32 PosPrev2; + public UInt32 BackPrev2; + + public UInt32 Price; + public UInt32 PosPrev; + public UInt32 BackPrev; + + public UInt32 Backs0; + public UInt32 Backs1; + public UInt32 Backs2; + public UInt32 Backs3; + + public void MakeAsChar() { BackPrev = 0xFFFFFFFF; Prev1IsChar = false; } + public void MakeAsShortRep() { BackPrev = 0; ; Prev1IsChar = false; } + public bool IsShortRep() { return (BackPrev == 0); } + }; + Optimal[] _optimum = new Optimal[kNumOpts]; + LZ.IMatchFinder _matchFinder = null; + RangeCoder.Encoder _rangeEncoder = new RangeCoder.Encoder(); + + RangeCoder.BitEncoder[] _isMatch = new RangeCoder.BitEncoder[Base.kNumStates << Base.kNumPosStatesBitsMax]; + RangeCoder.BitEncoder[] _isRep = new RangeCoder.BitEncoder[Base.kNumStates]; + RangeCoder.BitEncoder[] _isRepG0 = new RangeCoder.BitEncoder[Base.kNumStates]; + RangeCoder.BitEncoder[] _isRepG1 = new RangeCoder.BitEncoder[Base.kNumStates]; + RangeCoder.BitEncoder[] _isRepG2 = new RangeCoder.BitEncoder[Base.kNumStates]; + RangeCoder.BitEncoder[] _isRep0Long = new RangeCoder.BitEncoder[Base.kNumStates << Base.kNumPosStatesBitsMax]; + + RangeCoder.BitTreeEncoder[] _posSlotEncoder = new RangeCoder.BitTreeEncoder[Base.kNumLenToPosStates]; + + RangeCoder.BitEncoder[] _posEncoders = new RangeCoder.BitEncoder[Base.kNumFullDistances - Base.kEndPosModelIndex]; + RangeCoder.BitTreeEncoder _posAlignEncoder = new RangeCoder.BitTreeEncoder(Base.kNumAlignBits); + + LenPriceTableEncoder _lenEncoder = new LenPriceTableEncoder(); + LenPriceTableEncoder _repMatchLenEncoder = new LenPriceTableEncoder(); + + LiteralEncoder _literalEncoder = new LiteralEncoder(); + + UInt32[] _matchDistances = new UInt32[Base.kMatchMaxLen * 2 + 2]; + + UInt32 _numFastBytes = kNumFastBytesDefault; + UInt32 _longestMatchLength; + UInt32 _numDistancePairs; + + UInt32 _additionalOffset; + + UInt32 _optimumEndIndex; + UInt32 _optimumCurrentIndex; + + bool _longestMatchWasFound; + + UInt32[] _posSlotPrices = new UInt32[1 << (Base.kNumPosSlotBits + Base.kNumLenToPosStatesBits)]; + UInt32[] _distancesPrices = new UInt32[Base.kNumFullDistances << Base.kNumLenToPosStatesBits]; + UInt32[] _alignPrices = new UInt32[Base.kAlignTableSize]; + UInt32 _alignPriceCount; + + UInt32 _distTableSize = (kDefaultDictionaryLogSize * 2); + + int _posStateBits = 2; + UInt32 _posStateMask = (4 - 1); + int _numLiteralPosStateBits = 0; + int _numLiteralContextBits = 3; + + UInt32 _dictionarySize = (1 << kDefaultDictionaryLogSize); + UInt32 _dictionarySizePrev = 0xFFFFFFFF; + UInt32 _numFastBytesPrev = 0xFFFFFFFF; + + Int64 nowPos64; + bool _finished; + System.IO.Stream _inStream; + + EMatchFinderType _matchFinderType = EMatchFinderType.BT4; + bool _writeEndMark = false; + + bool _needReleaseMFStream; + + void Create() + { + if (_matchFinder == null) + { + LZ.BinTree bt = new LZ.BinTree(); + int numHashBytes = 4; + if (_matchFinderType == EMatchFinderType.BT2) + numHashBytes = 2; + bt.SetType(numHashBytes); + _matchFinder = bt; + } + _literalEncoder.Create(_numLiteralPosStateBits, _numLiteralContextBits); + + if (_dictionarySize == _dictionarySizePrev && _numFastBytesPrev == _numFastBytes) + return; + _matchFinder.Create(_dictionarySize, kNumOpts, _numFastBytes, Base.kMatchMaxLen + 1); + _dictionarySizePrev = _dictionarySize; + _numFastBytesPrev = _numFastBytes; + } + + public Encoder() + { + for (int i = 0; i < kNumOpts; i++) + _optimum[i] = new Optimal(); + for (int i = 0; i < Base.kNumLenToPosStates; i++) + _posSlotEncoder[i] = new RangeCoder.BitTreeEncoder(Base.kNumPosSlotBits); + } + + void SetWriteEndMarkerMode(bool writeEndMarker) + { + _writeEndMark = writeEndMarker; + } + + void Init() + { + BaseInit(); + _rangeEncoder.Init(); + + uint i; + for (i = 0; i < Base.kNumStates; i++) + { + for (uint j = 0; j <= _posStateMask; j++) + { + uint complexState = (i << Base.kNumPosStatesBitsMax) + j; + _isMatch[complexState].Init(); + _isRep0Long[complexState].Init(); + } + _isRep[i].Init(); + _isRepG0[i].Init(); + _isRepG1[i].Init(); + _isRepG2[i].Init(); + } + _literalEncoder.Init(); + for (i = 0; i < Base.kNumLenToPosStates; i++) + _posSlotEncoder[i].Init(); + for (i = 0; i < Base.kNumFullDistances - Base.kEndPosModelIndex; i++) + _posEncoders[i].Init(); + + _lenEncoder.Init((UInt32)1 << _posStateBits); + _repMatchLenEncoder.Init((UInt32)1 << _posStateBits); + + _posAlignEncoder.Init(); + + _longestMatchWasFound = false; + _optimumEndIndex = 0; + _optimumCurrentIndex = 0; + _additionalOffset = 0; + } + + void ReadMatchDistances(out UInt32 lenRes, out UInt32 numDistancePairs) + { + lenRes = 0; + numDistancePairs = _matchFinder.GetMatches(_matchDistances); + if (numDistancePairs > 0) + { + lenRes = _matchDistances[numDistancePairs - 2]; + if (lenRes == _numFastBytes) + lenRes += _matchFinder.GetMatchLen((int)lenRes - 1, _matchDistances[numDistancePairs - 1], + Base.kMatchMaxLen - lenRes); + } + _additionalOffset++; + } + + + void MovePos(UInt32 num) + { + if (num > 0) + { + _matchFinder.Skip(num); + _additionalOffset += num; + } + } + + UInt32 GetRepLen1Price(Base.State state, UInt32 posState) + { + return _isRepG0[state.Index].GetPrice0() + + _isRep0Long[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice0(); + } + + UInt32 GetPureRepPrice(UInt32 repIndex, Base.State state, UInt32 posState) + { + UInt32 price; + if (repIndex == 0) + { + price = _isRepG0[state.Index].GetPrice0(); + price += _isRep0Long[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1(); + } + else + { + price = _isRepG0[state.Index].GetPrice1(); + if (repIndex == 1) + price += _isRepG1[state.Index].GetPrice0(); + else + { + price += _isRepG1[state.Index].GetPrice1(); + price += _isRepG2[state.Index].GetPrice(repIndex - 2); + } + } + return price; + } + + UInt32 GetRepPrice(UInt32 repIndex, UInt32 len, Base.State state, UInt32 posState) + { + UInt32 price = _repMatchLenEncoder.GetPrice(len - Base.kMatchMinLen, posState); + return price + GetPureRepPrice(repIndex, state, posState); + } + + UInt32 GetPosLenPrice(UInt32 pos, UInt32 len, UInt32 posState) + { + UInt32 price; + UInt32 lenToPosState = Base.GetLenToPosState(len); + if (pos < Base.kNumFullDistances) + price = _distancesPrices[(lenToPosState * Base.kNumFullDistances) + pos]; + else + price = _posSlotPrices[(lenToPosState << Base.kNumPosSlotBits) + GetPosSlot2(pos)] + + _alignPrices[pos & Base.kAlignMask]; + return price + _lenEncoder.GetPrice(len - Base.kMatchMinLen, posState); + } + + UInt32 Backward(out UInt32 backRes, UInt32 cur) + { + _optimumEndIndex = cur; + UInt32 posMem = _optimum[cur].PosPrev; + UInt32 backMem = _optimum[cur].BackPrev; + do + { + if (_optimum[cur].Prev1IsChar) + { + _optimum[posMem].MakeAsChar(); + _optimum[posMem].PosPrev = posMem - 1; + if (_optimum[cur].Prev2) + { + _optimum[posMem - 1].Prev1IsChar = false; + _optimum[posMem - 1].PosPrev = _optimum[cur].PosPrev2; + _optimum[posMem - 1].BackPrev = _optimum[cur].BackPrev2; + } + } + UInt32 posPrev = posMem; + UInt32 backCur = backMem; + + backMem = _optimum[posPrev].BackPrev; + posMem = _optimum[posPrev].PosPrev; + + _optimum[posPrev].BackPrev = backCur; + _optimum[posPrev].PosPrev = cur; + cur = posPrev; + } + while (cur > 0); + backRes = _optimum[0].BackPrev; + _optimumCurrentIndex = _optimum[0].PosPrev; + return _optimumCurrentIndex; + } + + UInt32[] reps = new UInt32[Base.kNumRepDistances]; + UInt32[] repLens = new UInt32[Base.kNumRepDistances]; + + + UInt32 GetOptimum(UInt32 position, out UInt32 backRes) + { + if (_optimumEndIndex != _optimumCurrentIndex) + { + UInt32 lenRes = _optimum[_optimumCurrentIndex].PosPrev - _optimumCurrentIndex; + backRes = _optimum[_optimumCurrentIndex].BackPrev; + _optimumCurrentIndex = _optimum[_optimumCurrentIndex].PosPrev; + return lenRes; + } + _optimumCurrentIndex = _optimumEndIndex = 0; + + UInt32 lenMain, numDistancePairs; + if (!_longestMatchWasFound) + { + ReadMatchDistances(out lenMain, out numDistancePairs); + } + else + { + lenMain = _longestMatchLength; + numDistancePairs = _numDistancePairs; + _longestMatchWasFound = false; + } + + UInt32 numAvailableBytes = _matchFinder.GetNumAvailableBytes() + 1; + if (numAvailableBytes < 2) + { + backRes = 0xFFFFFFFF; + return 1; + } + if (numAvailableBytes > Base.kMatchMaxLen) + numAvailableBytes = Base.kMatchMaxLen; + + UInt32 repMaxIndex = 0; + UInt32 i; + for (i = 0; i < Base.kNumRepDistances; i++) + { + reps[i] = _repDistances[i]; + repLens[i] = _matchFinder.GetMatchLen(0 - 1, reps[i], Base.kMatchMaxLen); + if (repLens[i] > repLens[repMaxIndex]) + repMaxIndex = i; + } + if (repLens[repMaxIndex] >= _numFastBytes) + { + backRes = repMaxIndex; + UInt32 lenRes = repLens[repMaxIndex]; + MovePos(lenRes - 1); + return lenRes; + } + + if (lenMain >= _numFastBytes) + { + backRes = _matchDistances[numDistancePairs - 1] + Base.kNumRepDistances; + MovePos(lenMain - 1); + return lenMain; + } + + Byte currentByte = _matchFinder.GetIndexByte(0 - 1); + Byte matchByte = _matchFinder.GetIndexByte((Int32)(0 - _repDistances[0] - 1 - 1)); + + if (lenMain < 2 && currentByte != matchByte && repLens[repMaxIndex] < 2) + { + backRes = (UInt32)0xFFFFFFFF; + return 1; + } + + _optimum[0].State = _state; + + UInt32 posState = (position & _posStateMask); + + _optimum[1].Price = _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice0() + + _literalEncoder.GetSubCoder(position, _previousByte).GetPrice(!_state.IsCharState(), matchByte, currentByte); + _optimum[1].MakeAsChar(); + + UInt32 matchPrice = _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1(); + UInt32 repMatchPrice = matchPrice + _isRep[_state.Index].GetPrice1(); + + if (matchByte == currentByte) + { + UInt32 shortRepPrice = repMatchPrice + GetRepLen1Price(_state, posState); + if (shortRepPrice < _optimum[1].Price) + { + _optimum[1].Price = shortRepPrice; + _optimum[1].MakeAsShortRep(); + } + } + + UInt32 lenEnd = ((lenMain >= repLens[repMaxIndex]) ? lenMain : repLens[repMaxIndex]); + + if(lenEnd < 2) + { + backRes = _optimum[1].BackPrev; + return 1; + } + + _optimum[1].PosPrev = 0; + + _optimum[0].Backs0 = reps[0]; + _optimum[0].Backs1 = reps[1]; + _optimum[0].Backs2 = reps[2]; + _optimum[0].Backs3 = reps[3]; + + UInt32 len = lenEnd; + do + _optimum[len--].Price = kIfinityPrice; + while (len >= 2); + + for (i = 0; i < Base.kNumRepDistances; i++) + { + UInt32 repLen = repLens[i]; + if (repLen < 2) + continue; + UInt32 price = repMatchPrice + GetPureRepPrice(i, _state, posState); + do + { + UInt32 curAndLenPrice = price + _repMatchLenEncoder.GetPrice(repLen - 2, posState); + Optimal optimum = _optimum[repLen]; + if (curAndLenPrice < optimum.Price) + { + optimum.Price = curAndLenPrice; + optimum.PosPrev = 0; + optimum.BackPrev = i; + optimum.Prev1IsChar = false; + } + } + while (--repLen >= 2); + } + + UInt32 normalMatchPrice = matchPrice + _isRep[_state.Index].GetPrice0(); + + len = ((repLens[0] >= 2) ? repLens[0] + 1 : 2); + if (len <= lenMain) + { + UInt32 offs = 0; + while (len > _matchDistances[offs]) + offs += 2; + for (; ; len++) + { + UInt32 distance = _matchDistances[offs + 1]; + UInt32 curAndLenPrice = normalMatchPrice + GetPosLenPrice(distance, len, posState); + Optimal optimum = _optimum[len]; + if (curAndLenPrice < optimum.Price) + { + optimum.Price = curAndLenPrice; + optimum.PosPrev = 0; + optimum.BackPrev = distance + Base.kNumRepDistances; + optimum.Prev1IsChar = false; + } + if (len == _matchDistances[offs]) + { + offs += 2; + if (offs == numDistancePairs) + break; + } + } + } + + UInt32 cur = 0; + + while (true) + { + cur++; + if (cur == lenEnd) + return Backward(out backRes, cur); + UInt32 newLen; + ReadMatchDistances(out newLen, out numDistancePairs); + if (newLen >= _numFastBytes) + { + _numDistancePairs = numDistancePairs; + _longestMatchLength = newLen; + _longestMatchWasFound = true; + return Backward(out backRes, cur); + } + position++; + UInt32 posPrev = _optimum[cur].PosPrev; + Base.State state; + if (_optimum[cur].Prev1IsChar) + { + posPrev--; + if (_optimum[cur].Prev2) + { + state = _optimum[_optimum[cur].PosPrev2].State; + if (_optimum[cur].BackPrev2 < Base.kNumRepDistances) + state.UpdateRep(); + else + state.UpdateMatch(); + } + else + state = _optimum[posPrev].State; + state.UpdateChar(); + } + else + state = _optimum[posPrev].State; + if (posPrev == cur - 1) + { + if (_optimum[cur].IsShortRep()) + state.UpdateShortRep(); + else + state.UpdateChar(); + } + else + { + UInt32 pos; + if (_optimum[cur].Prev1IsChar && _optimum[cur].Prev2) + { + posPrev = _optimum[cur].PosPrev2; + pos = _optimum[cur].BackPrev2; + state.UpdateRep(); + } + else + { + pos = _optimum[cur].BackPrev; + if (pos < Base.kNumRepDistances) + state.UpdateRep(); + else + state.UpdateMatch(); + } + Optimal opt = _optimum[posPrev]; + if (pos < Base.kNumRepDistances) + { + if (pos == 0) + { + reps[0] = opt.Backs0; + reps[1] = opt.Backs1; + reps[2] = opt.Backs2; + reps[3] = opt.Backs3; + } + else if (pos == 1) + { + reps[0] = opt.Backs1; + reps[1] = opt.Backs0; + reps[2] = opt.Backs2; + reps[3] = opt.Backs3; + } + else if (pos == 2) + { + reps[0] = opt.Backs2; + reps[1] = opt.Backs0; + reps[2] = opt.Backs1; + reps[3] = opt.Backs3; + } + else + { + reps[0] = opt.Backs3; + reps[1] = opt.Backs0; + reps[2] = opt.Backs1; + reps[3] = opt.Backs2; + } + } + else + { + reps[0] = (pos - Base.kNumRepDistances); + reps[1] = opt.Backs0; + reps[2] = opt.Backs1; + reps[3] = opt.Backs2; + } + } + _optimum[cur].State = state; + _optimum[cur].Backs0 = reps[0]; + _optimum[cur].Backs1 = reps[1]; + _optimum[cur].Backs2 = reps[2]; + _optimum[cur].Backs3 = reps[3]; + UInt32 curPrice = _optimum[cur].Price; + + currentByte = _matchFinder.GetIndexByte(0 - 1); + matchByte = _matchFinder.GetIndexByte((Int32)(0 - reps[0] - 1 - 1)); + + posState = (position & _posStateMask); + + UInt32 curAnd1Price = curPrice + + _isMatch[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice0() + + _literalEncoder.GetSubCoder(position, _matchFinder.GetIndexByte(0 - 2)). + GetPrice(!state.IsCharState(), matchByte, currentByte); + + Optimal nextOptimum = _optimum[cur + 1]; + + bool nextIsChar = false; + if (curAnd1Price < nextOptimum.Price) + { + nextOptimum.Price = curAnd1Price; + nextOptimum.PosPrev = cur; + nextOptimum.MakeAsChar(); + nextIsChar = true; + } + + matchPrice = curPrice + _isMatch[(state.Index << Base.kNumPosStatesBitsMax) + posState].GetPrice1(); + repMatchPrice = matchPrice + _isRep[state.Index].GetPrice1(); + + if (matchByte == currentByte && + !(nextOptimum.PosPrev < cur && nextOptimum.BackPrev == 0)) + { + UInt32 shortRepPrice = repMatchPrice + GetRepLen1Price(state, posState); + if (shortRepPrice <= nextOptimum.Price) + { + nextOptimum.Price = shortRepPrice; + nextOptimum.PosPrev = cur; + nextOptimum.MakeAsShortRep(); + nextIsChar = true; + } + } + + UInt32 numAvailableBytesFull = _matchFinder.GetNumAvailableBytes() + 1; + numAvailableBytesFull = Math.Min(kNumOpts - 1 - cur, numAvailableBytesFull); + numAvailableBytes = numAvailableBytesFull; + + if (numAvailableBytes < 2) + continue; + if (numAvailableBytes > _numFastBytes) + numAvailableBytes = _numFastBytes; + if (!nextIsChar && matchByte != currentByte) + { + // try Literal + rep0 + UInt32 t = Math.Min(numAvailableBytesFull - 1, _numFastBytes); + UInt32 lenTest2 = _matchFinder.GetMatchLen(0, reps[0], t); + if (lenTest2 >= 2) + { + Base.State state2 = state; + state2.UpdateChar(); + UInt32 posStateNext = (position + 1) & _posStateMask; + UInt32 nextRepMatchPrice = curAnd1Price + + _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice1() + + _isRep[state2.Index].GetPrice1(); + { + UInt32 offset = cur + 1 + lenTest2; + while (lenEnd < offset) + _optimum[++lenEnd].Price = kIfinityPrice; + UInt32 curAndLenPrice = nextRepMatchPrice + GetRepPrice( + 0, lenTest2, state2, posStateNext); + Optimal optimum = _optimum[offset]; + if (curAndLenPrice < optimum.Price) + { + optimum.Price = curAndLenPrice; + optimum.PosPrev = cur + 1; + optimum.BackPrev = 0; + optimum.Prev1IsChar = true; + optimum.Prev2 = false; + } + } + } + } + + UInt32 startLen = 2; // speed optimization + + for (UInt32 repIndex = 0; repIndex < Base.kNumRepDistances; repIndex++) + { + UInt32 lenTest = _matchFinder.GetMatchLen(0 - 1, reps[repIndex], numAvailableBytes); + if (lenTest < 2) + continue; + UInt32 lenTestTemp = lenTest; + do + { + while (lenEnd < cur + lenTest) + _optimum[++lenEnd].Price = kIfinityPrice; + UInt32 curAndLenPrice = repMatchPrice + GetRepPrice(repIndex, lenTest, state, posState); + Optimal optimum = _optimum[cur + lenTest]; + if (curAndLenPrice < optimum.Price) + { + optimum.Price = curAndLenPrice; + optimum.PosPrev = cur; + optimum.BackPrev = repIndex; + optimum.Prev1IsChar = false; + } + } + while(--lenTest >= 2); + lenTest = lenTestTemp; + + if (repIndex == 0) + startLen = lenTest + 1; + + // if (_maxMode) + if (lenTest < numAvailableBytesFull) + { + UInt32 t = Math.Min(numAvailableBytesFull - 1 - lenTest, _numFastBytes); + UInt32 lenTest2 = _matchFinder.GetMatchLen((Int32)lenTest, reps[repIndex], t); + if (lenTest2 >= 2) + { + Base.State state2 = state; + state2.UpdateRep(); + UInt32 posStateNext = (position + lenTest) & _posStateMask; + UInt32 curAndLenCharPrice = + repMatchPrice + GetRepPrice(repIndex, lenTest, state, posState) + + _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice0() + + _literalEncoder.GetSubCoder(position + lenTest, + _matchFinder.GetIndexByte((Int32)lenTest - 1 - 1)).GetPrice(true, + _matchFinder.GetIndexByte((Int32)((Int32)lenTest - 1 - (Int32)(reps[repIndex] + 1))), + _matchFinder.GetIndexByte((Int32)lenTest - 1)); + state2.UpdateChar(); + posStateNext = (position + lenTest + 1) & _posStateMask; + UInt32 nextMatchPrice = curAndLenCharPrice + _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice1(); + UInt32 nextRepMatchPrice = nextMatchPrice + _isRep[state2.Index].GetPrice1(); + + // for(; lenTest2 >= 2; lenTest2--) + { + UInt32 offset = lenTest + 1 + lenTest2; + while(lenEnd < cur + offset) + _optimum[++lenEnd].Price = kIfinityPrice; + UInt32 curAndLenPrice = nextRepMatchPrice + GetRepPrice(0, lenTest2, state2, posStateNext); + Optimal optimum = _optimum[cur + offset]; + if (curAndLenPrice < optimum.Price) + { + optimum.Price = curAndLenPrice; + optimum.PosPrev = cur + lenTest + 1; + optimum.BackPrev = 0; + optimum.Prev1IsChar = true; + optimum.Prev2 = true; + optimum.PosPrev2 = cur; + optimum.BackPrev2 = repIndex; + } + } + } + } + } + + if (newLen > numAvailableBytes) + { + newLen = numAvailableBytes; + for (numDistancePairs = 0; newLen > _matchDistances[numDistancePairs]; numDistancePairs += 2) ; + _matchDistances[numDistancePairs] = newLen; + numDistancePairs += 2; + } + if (newLen >= startLen) + { + normalMatchPrice = matchPrice + _isRep[state.Index].GetPrice0(); + while (lenEnd < cur + newLen) + _optimum[++lenEnd].Price = kIfinityPrice; + + UInt32 offs = 0; + while (startLen > _matchDistances[offs]) + offs += 2; + + for (UInt32 lenTest = startLen; ; lenTest++) + { + UInt32 curBack = _matchDistances[offs + 1]; + UInt32 curAndLenPrice = normalMatchPrice + GetPosLenPrice(curBack, lenTest, posState); + Optimal optimum = _optimum[cur + lenTest]; + if (curAndLenPrice < optimum.Price) + { + optimum.Price = curAndLenPrice; + optimum.PosPrev = cur; + optimum.BackPrev = curBack + Base.kNumRepDistances; + optimum.Prev1IsChar = false; + } + + if (lenTest == _matchDistances[offs]) + { + if (lenTest < numAvailableBytesFull) + { + UInt32 t = Math.Min(numAvailableBytesFull - 1 - lenTest, _numFastBytes); + UInt32 lenTest2 = _matchFinder.GetMatchLen((Int32)lenTest, curBack, t); + if (lenTest2 >= 2) + { + Base.State state2 = state; + state2.UpdateMatch(); + UInt32 posStateNext = (position + lenTest) & _posStateMask; + UInt32 curAndLenCharPrice = curAndLenPrice + + _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice0() + + _literalEncoder.GetSubCoder(position + lenTest, + _matchFinder.GetIndexByte((Int32)lenTest - 1 - 1)). + GetPrice(true, + _matchFinder.GetIndexByte((Int32)lenTest - (Int32)(curBack + 1) - 1), + _matchFinder.GetIndexByte((Int32)lenTest - 1)); + state2.UpdateChar(); + posStateNext = (position + lenTest + 1) & _posStateMask; + UInt32 nextMatchPrice = curAndLenCharPrice + _isMatch[(state2.Index << Base.kNumPosStatesBitsMax) + posStateNext].GetPrice1(); + UInt32 nextRepMatchPrice = nextMatchPrice + _isRep[state2.Index].GetPrice1(); + + UInt32 offset = lenTest + 1 + lenTest2; + while (lenEnd < cur + offset) + _optimum[++lenEnd].Price = kIfinityPrice; + curAndLenPrice = nextRepMatchPrice + GetRepPrice(0, lenTest2, state2, posStateNext); + optimum = _optimum[cur + offset]; + if (curAndLenPrice < optimum.Price) + { + optimum.Price = curAndLenPrice; + optimum.PosPrev = cur + lenTest + 1; + optimum.BackPrev = 0; + optimum.Prev1IsChar = true; + optimum.Prev2 = true; + optimum.PosPrev2 = cur; + optimum.BackPrev2 = curBack + Base.kNumRepDistances; + } + } + } + offs += 2; + if (offs == numDistancePairs) + break; + } + } + } + } + } + + bool ChangePair(UInt32 smallDist, UInt32 bigDist) + { + const int kDif = 7; + return (smallDist < ((UInt32)(1) << (32 - kDif)) && bigDist >= (smallDist << kDif)); + } + + void WriteEndMarker(UInt32 posState) + { + if (!_writeEndMark) + return; + + _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].Encode(_rangeEncoder, 1); + _isRep[_state.Index].Encode(_rangeEncoder, 0); + _state.UpdateMatch(); + UInt32 len = Base.kMatchMinLen; + _lenEncoder.Encode(_rangeEncoder, len - Base.kMatchMinLen, posState); + UInt32 posSlot = (1 << Base.kNumPosSlotBits) - 1; + UInt32 lenToPosState = Base.GetLenToPosState(len); + _posSlotEncoder[lenToPosState].Encode(_rangeEncoder, posSlot); + int footerBits = 30; + UInt32 posReduced = (((UInt32)1) << footerBits) - 1; + _rangeEncoder.EncodeDirectBits(posReduced >> Base.kNumAlignBits, footerBits - Base.kNumAlignBits); + _posAlignEncoder.ReverseEncode(_rangeEncoder, posReduced & Base.kAlignMask); + } + + void Flush(UInt32 nowPos) + { + ReleaseMFStream(); + WriteEndMarker(nowPos & _posStateMask); + _rangeEncoder.FlushData(); + _rangeEncoder.FlushStream(); + } + + public void CodeOneBlock(out Int64 inSize, out Int64 outSize, out bool finished) + { + inSize = 0; + outSize = 0; + finished = true; + + if (_inStream != null) + { + _matchFinder.SetStream(_inStream); + _matchFinder.Init(); + _needReleaseMFStream = true; + _inStream = null; + if (_trainSize > 0) + _matchFinder.Skip(_trainSize); + } + + if (_finished) + return; + _finished = true; + + + Int64 progressPosValuePrev = nowPos64; + if (nowPos64 == 0) + { + if (_matchFinder.GetNumAvailableBytes() == 0) + { + Flush((UInt32)nowPos64); + return; + } + UInt32 len, numDistancePairs; // it's not used + ReadMatchDistances(out len, out numDistancePairs); + UInt32 posState = (UInt32)(nowPos64) & _posStateMask; + _isMatch[(_state.Index << Base.kNumPosStatesBitsMax) + posState].Encode(_rangeEncoder, 0); + _state.UpdateChar(); + Byte curByte = _matchFinder.GetIndexByte((Int32)(0 - _additionalOffset)); + _literalEncoder.GetSubCoder((UInt32)(nowPos64), _previousByte).Encode(_rangeEncoder, curByte); + _previousByte = curByte; + _additionalOffset--; + nowPos64++; + } + if (_matchFinder.GetNumAvailableBytes() == 0) + { + Flush((UInt32)nowPos64); + return; + } + while (true) + { + UInt32 pos; + UInt32 len = GetOptimum((UInt32)nowPos64, out pos); + + UInt32 posState = ((UInt32)nowPos64) & _posStateMask; + UInt32 complexState = (_state.Index << Base.kNumPosStatesBitsMax) + posState; + if (len == 1 && pos == 0xFFFFFFFF) + { + _isMatch[complexState].Encode(_rangeEncoder, 0); + Byte curByte = _matchFinder.GetIndexByte((Int32)(0 - _additionalOffset)); + LiteralEncoder.Encoder2 subCoder = _literalEncoder.GetSubCoder((UInt32)nowPos64, _previousByte); + if (!_state.IsCharState()) + { + Byte matchByte = _matchFinder.GetIndexByte((Int32)(0 - _repDistances[0] - 1 - _additionalOffset)); + subCoder.EncodeMatched(_rangeEncoder, matchByte, curByte); + } + else + subCoder.Encode(_rangeEncoder, curByte); + _previousByte = curByte; + _state.UpdateChar(); + } + else + { + _isMatch[complexState].Encode(_rangeEncoder, 1); + if (pos < Base.kNumRepDistances) + { + _isRep[_state.Index].Encode(_rangeEncoder, 1); + if (pos == 0) + { + _isRepG0[_state.Index].Encode(_rangeEncoder, 0); + if (len == 1) + _isRep0Long[complexState].Encode(_rangeEncoder, 0); + else + _isRep0Long[complexState].Encode(_rangeEncoder, 1); + } + else + { + _isRepG0[_state.Index].Encode(_rangeEncoder, 1); + if (pos == 1) + _isRepG1[_state.Index].Encode(_rangeEncoder, 0); + else + { + _isRepG1[_state.Index].Encode(_rangeEncoder, 1); + _isRepG2[_state.Index].Encode(_rangeEncoder, pos - 2); + } + } + if (len == 1) + _state.UpdateShortRep(); + else + { + _repMatchLenEncoder.Encode(_rangeEncoder, len - Base.kMatchMinLen, posState); + _state.UpdateRep(); + } + UInt32 distance = _repDistances[pos]; + if (pos != 0) + { + for (UInt32 i = pos; i >= 1; i--) + _repDistances[i] = _repDistances[i - 1]; + _repDistances[0] = distance; + } + } + else + { + _isRep[_state.Index].Encode(_rangeEncoder, 0); + _state.UpdateMatch(); + _lenEncoder.Encode(_rangeEncoder, len - Base.kMatchMinLen, posState); + pos -= Base.kNumRepDistances; + UInt32 posSlot = GetPosSlot(pos); + UInt32 lenToPosState = Base.GetLenToPosState(len); + _posSlotEncoder[lenToPosState].Encode(_rangeEncoder, posSlot); + + if (posSlot >= Base.kStartPosModelIndex) + { + int footerBits = (int)((posSlot >> 1) - 1); + UInt32 baseVal = ((2 | (posSlot & 1)) << footerBits); + UInt32 posReduced = pos - baseVal; + + if (posSlot < Base.kEndPosModelIndex) + RangeCoder.BitTreeEncoder.ReverseEncode(_posEncoders, + baseVal - posSlot - 1, _rangeEncoder, footerBits, posReduced); + else + { + _rangeEncoder.EncodeDirectBits(posReduced >> Base.kNumAlignBits, footerBits - Base.kNumAlignBits); + _posAlignEncoder.ReverseEncode(_rangeEncoder, posReduced & Base.kAlignMask); + _alignPriceCount++; + } + } + UInt32 distance = pos; + for (UInt32 i = Base.kNumRepDistances - 1; i >= 1; i--) + _repDistances[i] = _repDistances[i - 1]; + _repDistances[0] = distance; + _matchPriceCount++; + } + _previousByte = _matchFinder.GetIndexByte((Int32)(len - 1 - _additionalOffset)); + } + _additionalOffset -= len; + nowPos64 += len; + if (_additionalOffset == 0) + { + // if (!_fastMode) + if (_matchPriceCount >= (1 << 7)) + FillDistancesPrices(); + if (_alignPriceCount >= Base.kAlignTableSize) + FillAlignPrices(); + inSize = nowPos64; + outSize = _rangeEncoder.GetProcessedSizeAdd(); + if (_matchFinder.GetNumAvailableBytes() == 0) + { + Flush((UInt32)nowPos64); + return; + } + + if (nowPos64 - progressPosValuePrev >= (1 << 12)) + { + _finished = false; + finished = false; + return; + } + } + } + } + + void ReleaseMFStream() + { + if (_matchFinder != null && _needReleaseMFStream) + { + _matchFinder.ReleaseStream(); + _needReleaseMFStream = false; + } + } + + void SetOutStream(System.IO.Stream outStream) { _rangeEncoder.SetStream(outStream); } + void ReleaseOutStream() { _rangeEncoder.ReleaseStream(); } + + void ReleaseStreams() + { + ReleaseMFStream(); + ReleaseOutStream(); + } + + void SetStreams(System.IO.Stream inStream, System.IO.Stream outStream, + Int64 inSize, Int64 outSize) + { + _inStream = inStream; + _finished = false; + Create(); + SetOutStream(outStream); + Init(); + + // if (!_fastMode) + { + FillDistancesPrices(); + FillAlignPrices(); + } + + _lenEncoder.SetTableSize(_numFastBytes + 1 - Base.kMatchMinLen); + _lenEncoder.UpdateTables((UInt32)1 << _posStateBits); + _repMatchLenEncoder.SetTableSize(_numFastBytes + 1 - Base.kMatchMinLen); + _repMatchLenEncoder.UpdateTables((UInt32)1 << _posStateBits); + + nowPos64 = 0; + } + + + public void Code(System.IO.Stream inStream, System.IO.Stream outStream, + Int64 inSize, Int64 outSize, ICodeProgress progress) + { + _needReleaseMFStream = false; + try + { + SetStreams(inStream, outStream, inSize, outSize); + while (true) + { + Int64 processedInSize; + Int64 processedOutSize; + bool finished; + CodeOneBlock(out processedInSize, out processedOutSize, out finished); + if (finished) + return; + if (progress != null) + { + progress.SetProgress(processedInSize, processedOutSize); + } + } + } + finally + { + ReleaseStreams(); + } + } + + const int kPropSize = 5; + Byte[] properties = new Byte[kPropSize]; + + public void WriteCoderProperties(System.IO.Stream outStream) + { + properties[0] = (Byte)((_posStateBits * 5 + _numLiteralPosStateBits) * 9 + _numLiteralContextBits); + for (int i = 0; i < 4; i++) + properties[1 + i] = (Byte)((_dictionarySize >> (8 * i)) & 0xFF); + outStream.Write(properties, 0, kPropSize); + } + + UInt32[] tempPrices = new UInt32[Base.kNumFullDistances]; + UInt32 _matchPriceCount; + + void FillDistancesPrices() + { + for (UInt32 i = Base.kStartPosModelIndex; i < Base.kNumFullDistances; i++) + { + UInt32 posSlot = GetPosSlot(i); + int footerBits = (int)((posSlot >> 1) - 1); + UInt32 baseVal = ((2 | (posSlot & 1)) << footerBits); + tempPrices[i] = BitTreeEncoder.ReverseGetPrice(_posEncoders, + baseVal - posSlot - 1, footerBits, i - baseVal); + } + + for (UInt32 lenToPosState = 0; lenToPosState < Base.kNumLenToPosStates; lenToPosState++) + { + UInt32 posSlot; + RangeCoder.BitTreeEncoder encoder = _posSlotEncoder[lenToPosState]; + + UInt32 st = (lenToPosState << Base.kNumPosSlotBits); + for (posSlot = 0; posSlot < _distTableSize; posSlot++) + _posSlotPrices[st + posSlot] = encoder.GetPrice(posSlot); + for (posSlot = Base.kEndPosModelIndex; posSlot < _distTableSize; posSlot++) + _posSlotPrices[st + posSlot] += ((((posSlot >> 1) - 1) - Base.kNumAlignBits) << RangeCoder.BitEncoder.kNumBitPriceShiftBits); + + UInt32 st2 = lenToPosState * Base.kNumFullDistances; + UInt32 i; + for (i = 0; i < Base.kStartPosModelIndex; i++) + _distancesPrices[st2 + i] = _posSlotPrices[st + i]; + for (; i < Base.kNumFullDistances; i++) + _distancesPrices[st2 + i] = _posSlotPrices[st + GetPosSlot(i)] + tempPrices[i]; + } + _matchPriceCount = 0; + } + + void FillAlignPrices() + { + for (UInt32 i = 0; i < Base.kAlignTableSize; i++) + _alignPrices[i] = _posAlignEncoder.ReverseGetPrice(i); + _alignPriceCount = 0; + } + + + static string[] kMatchFinderIDs = + { + "BT2", + "BT4", + }; + + static int FindMatchFinder(string s) + { + for (int m = 0; m < kMatchFinderIDs.Length; m++) + if (s == kMatchFinderIDs[m]) + return m; + return -1; + } + + public void SetCoderProperties(CoderPropID[] propIDs, object[] properties) + { + for (UInt32 i = 0; i < properties.Length; i++) + { + object prop = properties[i]; + switch (propIDs[i]) + { + case CoderPropID.NumFastBytes: + { + if (!(prop is Int32)) + throw new InvalidParamException(); + Int32 numFastBytes = (Int32)prop; + if (numFastBytes < 5 || numFastBytes > Base.kMatchMaxLen) + throw new InvalidParamException(); + _numFastBytes = (UInt32)numFastBytes; + break; + } + case CoderPropID.Algorithm: + { + /* + if (!(prop is Int32)) + throw new InvalidParamException(); + Int32 maximize = (Int32)prop; + _fastMode = (maximize == 0); + _maxMode = (maximize >= 2); + */ + break; + } + case CoderPropID.MatchFinder: + { + if (!(prop is String)) + throw new InvalidParamException(); + EMatchFinderType matchFinderIndexPrev = _matchFinderType; + int m = FindMatchFinder(((string)prop).ToUpper()); + if (m < 0) + throw new InvalidParamException(); + _matchFinderType = (EMatchFinderType)m; + if (_matchFinder != null && matchFinderIndexPrev != _matchFinderType) + { + _dictionarySizePrev = 0xFFFFFFFF; + _matchFinder = null; + } + break; + } + case CoderPropID.DictionarySize: + { + const int kDicLogSizeMaxCompress = 30; + if (!(prop is Int32)) + throw new InvalidParamException(); ; + Int32 dictionarySize = (Int32)prop; + if (dictionarySize < (UInt32)(1 << Base.kDicLogSizeMin) || + dictionarySize > (UInt32)(1 << kDicLogSizeMaxCompress)) + throw new InvalidParamException(); + _dictionarySize = (UInt32)dictionarySize; + int dicLogSize; + for (dicLogSize = 0; dicLogSize < (UInt32)kDicLogSizeMaxCompress; dicLogSize++) + if (dictionarySize <= ((UInt32)(1) << dicLogSize)) + break; + _distTableSize = (UInt32)dicLogSize * 2; + break; + } + case CoderPropID.PosStateBits: + { + if (!(prop is Int32)) + throw new InvalidParamException(); + Int32 v = (Int32)prop; + if (v < 0 || v > (UInt32)Base.kNumPosStatesBitsEncodingMax) + throw new InvalidParamException(); + _posStateBits = (int)v; + _posStateMask = (((UInt32)1) << (int)_posStateBits) - 1; + break; + } + case CoderPropID.LitPosBits: + { + if (!(prop is Int32)) + throw new InvalidParamException(); + Int32 v = (Int32)prop; + if (v < 0 || v > (UInt32)Base.kNumLitPosStatesBitsEncodingMax) + throw new InvalidParamException(); + _numLiteralPosStateBits = (int)v; + break; + } + case CoderPropID.LitContextBits: + { + if (!(prop is Int32)) + throw new InvalidParamException(); + Int32 v = (Int32)prop; + if (v < 0 || v > (UInt32)Base.kNumLitContextBitsMax) + throw new InvalidParamException(); ; + _numLiteralContextBits = (int)v; + break; + } + case CoderPropID.EndMarker: + { + if (!(prop is Boolean)) + throw new InvalidParamException(); + SetWriteEndMarkerMode((Boolean)prop); + break; + } + default: + throw new InvalidParamException(); + } + } + } + + uint _trainSize = 0; + public void SetTrainSize(uint trainSize) + { + _trainSize = trainSize; + } + + } +} diff --git a/Saviour Backup System/7-Zip SDK/OutBuffer.cs b/Saviour Backup System/7-Zip SDK/OutBuffer.cs new file mode 100644 index 0000000..2da16e1 --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/OutBuffer.cs @@ -0,0 +1,47 @@ +// OutBuffer.cs + +namespace SevenZip.Buffer +{ + public class OutBuffer + { + byte[] m_Buffer; + uint m_Pos; + uint m_BufferSize; + System.IO.Stream m_Stream; + ulong m_ProcessedSize; + + public OutBuffer(uint bufferSize) + { + m_Buffer = new byte[bufferSize]; + m_BufferSize = bufferSize; + } + + public void SetStream(System.IO.Stream stream) { m_Stream = stream; } + public void FlushStream() { m_Stream.Flush(); } + public void CloseStream() { m_Stream.Close(); } + public void ReleaseStream() { m_Stream = null; } + + public void Init() + { + m_ProcessedSize = 0; + m_Pos = 0; + } + + public void WriteByte(byte b) + { + m_Buffer[m_Pos++] = b; + if (m_Pos >= m_BufferSize) + FlushData(); + } + + public void FlushData() + { + if (m_Pos == 0) + return; + m_Stream.Write(m_Buffer, 0, (int)m_Pos); + m_Pos = 0; + } + + public ulong GetProcessedSize() { return m_ProcessedSize + m_Pos; } + } +} diff --git a/Saviour Backup System/7-Zip SDK/RangeCoder.cs b/Saviour Backup System/7-Zip SDK/RangeCoder.cs new file mode 100644 index 0000000..949c6bb --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/RangeCoder.cs @@ -0,0 +1,234 @@ +using System; + +namespace SevenZip.Compression.RangeCoder +{ + class Encoder + { + public const uint kTopValue = (1 << 24); + + System.IO.Stream Stream; + + public UInt64 Low; + public uint Range; + uint _cacheSize; + byte _cache; + + long StartPosition; + + public void SetStream(System.IO.Stream stream) + { + Stream = stream; + } + + public void ReleaseStream() + { + Stream = null; + } + + public void Init() + { + StartPosition = Stream.Position; + + Low = 0; + Range = 0xFFFFFFFF; + _cacheSize = 1; + _cache = 0; + } + + public void FlushData() + { + for (int i = 0; i < 5; i++) + ShiftLow(); + } + + public void FlushStream() + { + Stream.Flush(); + } + + public void CloseStream() + { + Stream.Close(); + } + + public void Encode(uint start, uint size, uint total) + { + Low += start * (Range /= total); + Range *= size; + while (Range < kTopValue) + { + Range <<= 8; + ShiftLow(); + } + } + + public void ShiftLow() + { + if ((uint)Low < (uint)0xFF000000 || (uint)(Low >> 32) == 1) + { + byte temp = _cache; + do + { + Stream.WriteByte((byte)(temp + (Low >> 32))); + temp = 0xFF; + } + while (--_cacheSize != 0); + _cache = (byte)(((uint)Low) >> 24); + } + _cacheSize++; + Low = ((uint)Low) << 8; + } + + public void EncodeDirectBits(uint v, int numTotalBits) + { + for (int i = numTotalBits - 1; i >= 0; i--) + { + Range >>= 1; + if (((v >> i) & 1) == 1) + Low += Range; + if (Range < kTopValue) + { + Range <<= 8; + ShiftLow(); + } + } + } + + public void EncodeBit(uint size0, int numTotalBits, uint symbol) + { + uint newBound = (Range >> numTotalBits) * size0; + if (symbol == 0) + Range = newBound; + else + { + Low += newBound; + Range -= newBound; + } + while (Range < kTopValue) + { + Range <<= 8; + ShiftLow(); + } + } + + public long GetProcessedSizeAdd() + { + return _cacheSize + + Stream.Position - StartPosition + 4; + // (long)Stream.GetProcessedSize(); + } + } + + class Decoder + { + public const uint kTopValue = (1 << 24); + public uint Range; + public uint Code; + // public Buffer.InBuffer Stream = new Buffer.InBuffer(1 << 16); + public System.IO.Stream Stream; + + public void Init(System.IO.Stream stream) + { + // Stream.Init(stream); + Stream = stream; + + Code = 0; + Range = 0xFFFFFFFF; + for (int i = 0; i < 5; i++) + Code = (Code << 8) | (byte)Stream.ReadByte(); + } + + public void ReleaseStream() + { + // Stream.ReleaseStream(); + Stream = null; + } + + public void CloseStream() + { + Stream.Close(); + } + + public void Normalize() + { + while (Range < kTopValue) + { + Code = (Code << 8) | (byte)Stream.ReadByte(); + Range <<= 8; + } + } + + public void Normalize2() + { + if (Range < kTopValue) + { + Code = (Code << 8) | (byte)Stream.ReadByte(); + Range <<= 8; + } + } + + public uint GetThreshold(uint total) + { + return Code / (Range /= total); + } + + public void Decode(uint start, uint size, uint total) + { + Code -= start * Range; + Range *= size; + Normalize(); + } + + public uint DecodeDirectBits(int numTotalBits) + { + uint range = Range; + uint code = Code; + uint result = 0; + for (int i = numTotalBits; i > 0; i--) + { + range >>= 1; + /* + result <<= 1; + if (code >= range) + { + code -= range; + result |= 1; + } + */ + uint t = (code - range) >> 31; + code -= range & (t - 1); + result = (result << 1) | (1 - t); + + if (range < kTopValue) + { + code = (code << 8) | (byte)Stream.ReadByte(); + range <<= 8; + } + } + Range = range; + Code = code; + return result; + } + + public uint DecodeBit(uint size0, int numTotalBits) + { + uint newBound = (Range >> numTotalBits) * size0; + uint symbol; + if (Code < newBound) + { + symbol = 0; + Range = newBound; + } + else + { + symbol = 1; + Code -= newBound; + Range -= newBound; + } + Normalize(); + return symbol; + } + + // ulong GetProcessedSize() {return Stream.GetProcessedSize(); } + } +} diff --git a/Saviour Backup System/7-Zip SDK/RangeCoderBit.cs b/Saviour Backup System/7-Zip SDK/RangeCoderBit.cs new file mode 100644 index 0000000..4f0346d --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/RangeCoderBit.cs @@ -0,0 +1,117 @@ +using System; + +namespace SevenZip.Compression.RangeCoder +{ + struct BitEncoder + { + public const int kNumBitModelTotalBits = 11; + public const uint kBitModelTotal = (1 << kNumBitModelTotalBits); + const int kNumMoveBits = 5; + const int kNumMoveReducingBits = 2; + public const int kNumBitPriceShiftBits = 6; + + uint Prob; + + public void Init() { Prob = kBitModelTotal >> 1; } + + public void UpdateModel(uint symbol) + { + if (symbol == 0) + Prob += (kBitModelTotal - Prob) >> kNumMoveBits; + else + Prob -= (Prob) >> kNumMoveBits; + } + + public void Encode(Encoder encoder, uint symbol) + { + // encoder.EncodeBit(Prob, kNumBitModelTotalBits, symbol); + // UpdateModel(symbol); + uint newBound = (encoder.Range >> kNumBitModelTotalBits) * Prob; + if (symbol == 0) + { + encoder.Range = newBound; + Prob += (kBitModelTotal - Prob) >> kNumMoveBits; + } + else + { + encoder.Low += newBound; + encoder.Range -= newBound; + Prob -= (Prob) >> kNumMoveBits; + } + if (encoder.Range < Encoder.kTopValue) + { + encoder.Range <<= 8; + encoder.ShiftLow(); + } + } + + private static UInt32[] ProbPrices = new UInt32[kBitModelTotal >> kNumMoveReducingBits]; + + static BitEncoder() + { + const int kNumBits = (kNumBitModelTotalBits - kNumMoveReducingBits); + for (int i = kNumBits - 1; i >= 0; i--) + { + UInt32 start = (UInt32)1 << (kNumBits - i - 1); + UInt32 end = (UInt32)1 << (kNumBits - i); + for (UInt32 j = start; j < end; j++) + ProbPrices[j] = ((UInt32)i << kNumBitPriceShiftBits) + + (((end - j) << kNumBitPriceShiftBits) >> (kNumBits - i - 1)); + } + } + + public uint GetPrice(uint symbol) + { + return ProbPrices[(((Prob - symbol) ^ ((-(int)symbol))) & (kBitModelTotal - 1)) >> kNumMoveReducingBits]; + } + public uint GetPrice0() { return ProbPrices[Prob >> kNumMoveReducingBits]; } + public uint GetPrice1() { return ProbPrices[(kBitModelTotal - Prob) >> kNumMoveReducingBits]; } + } + + struct BitDecoder + { + public const int kNumBitModelTotalBits = 11; + public const uint kBitModelTotal = (1 << kNumBitModelTotalBits); + const int kNumMoveBits = 5; + + uint Prob; + + public void UpdateModel(int numMoveBits, uint symbol) + { + if (symbol == 0) + Prob += (kBitModelTotal - Prob) >> numMoveBits; + else + Prob -= (Prob) >> numMoveBits; + } + + public void Init() { Prob = kBitModelTotal >> 1; } + + public uint Decode(RangeCoder.Decoder rangeDecoder) + { + uint newBound = (uint)(rangeDecoder.Range >> kNumBitModelTotalBits) * (uint)Prob; + if (rangeDecoder.Code < newBound) + { + rangeDecoder.Range = newBound; + Prob += (kBitModelTotal - Prob) >> kNumMoveBits; + if (rangeDecoder.Range < Decoder.kTopValue) + { + rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte(); + rangeDecoder.Range <<= 8; + } + return 0; + } + else + { + rangeDecoder.Range -= newBound; + rangeDecoder.Code -= newBound; + Prob -= (Prob) >> kNumMoveBits; + if (rangeDecoder.Range < Decoder.kTopValue) + { + rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte(); + rangeDecoder.Range <<= 8; + } + return 1; + } + } + } +} diff --git a/Saviour Backup System/7-Zip SDK/RangeCoderBitTree.cs b/Saviour Backup System/7-Zip SDK/RangeCoderBitTree.cs new file mode 100644 index 0000000..4b4506f --- /dev/null +++ b/Saviour Backup System/7-Zip SDK/RangeCoderBitTree.cs @@ -0,0 +1,157 @@ +using System; + +namespace SevenZip.Compression.RangeCoder +{ + struct BitTreeEncoder + { + BitEncoder[] Models; + int NumBitLevels; + + public BitTreeEncoder(int numBitLevels) + { + NumBitLevels = numBitLevels; + Models = new BitEncoder[1 << numBitLevels]; + } + + public void Init() + { + for (uint i = 1; i < (1 << NumBitLevels); i++) + Models[i].Init(); + } + + public void Encode(Encoder rangeEncoder, UInt32 symbol) + { + UInt32 m = 1; + for (int bitIndex = NumBitLevels; bitIndex > 0; ) + { + bitIndex--; + UInt32 bit = (symbol >> bitIndex) & 1; + Models[m].Encode(rangeEncoder, bit); + m = (m << 1) | bit; + } + } + + public void ReverseEncode(Encoder rangeEncoder, UInt32 symbol) + { + UInt32 m = 1; + for (UInt32 i = 0; i < NumBitLevels; i++) + { + UInt32 bit = symbol & 1; + Models[m].Encode(rangeEncoder, bit); + m = (m << 1) | bit; + symbol >>= 1; + } + } + + public UInt32 GetPrice(UInt32 symbol) + { + UInt32 price = 0; + UInt32 m = 1; + for (int bitIndex = NumBitLevels; bitIndex > 0; ) + { + bitIndex--; + UInt32 bit = (symbol >> bitIndex) & 1; + price += Models[m].GetPrice(bit); + m = (m << 1) + bit; + } + return price; + } + + public UInt32 ReverseGetPrice(UInt32 symbol) + { + UInt32 price = 0; + UInt32 m = 1; + for (int i = NumBitLevels; i > 0; i--) + { + UInt32 bit = symbol & 1; + symbol >>= 1; + price += Models[m].GetPrice(bit); + m = (m << 1) | bit; + } + return price; + } + + public static UInt32 ReverseGetPrice(BitEncoder[] Models, UInt32 startIndex, + int NumBitLevels, UInt32 symbol) + { + UInt32 price = 0; + UInt32 m = 1; + for (int i = NumBitLevels; i > 0; i--) + { + UInt32 bit = symbol & 1; + symbol >>= 1; + price += Models[startIndex + m].GetPrice(bit); + m = (m << 1) | bit; + } + return price; + } + + public static void ReverseEncode(BitEncoder[] Models, UInt32 startIndex, + Encoder rangeEncoder, int NumBitLevels, UInt32 symbol) + { + UInt32 m = 1; + for (int i = 0; i < NumBitLevels; i++) + { + UInt32 bit = symbol & 1; + Models[startIndex + m].Encode(rangeEncoder, bit); + m = (m << 1) | bit; + symbol >>= 1; + } + } + } + + struct BitTreeDecoder + { + BitDecoder[] Models; + int NumBitLevels; + + public BitTreeDecoder(int numBitLevels) + { + NumBitLevels = numBitLevels; + Models = new BitDecoder[1 << numBitLevels]; + } + + public void Init() + { + for (uint i = 1; i < (1 << NumBitLevels); i++) + Models[i].Init(); + } + + public uint Decode(RangeCoder.Decoder rangeDecoder) + { + uint m = 1; + for (int bitIndex = NumBitLevels; bitIndex > 0; bitIndex--) + m = (m << 1) + Models[m].Decode(rangeDecoder); + return m - ((uint)1 << NumBitLevels); + } + + public uint ReverseDecode(RangeCoder.Decoder rangeDecoder) + { + uint m = 1; + uint symbol = 0; + for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++) + { + uint bit = Models[m].Decode(rangeDecoder); + m <<= 1; + m += bit; + symbol |= (bit << bitIndex); + } + return symbol; + } + + public static uint ReverseDecode(BitDecoder[] Models, UInt32 startIndex, + RangeCoder.Decoder rangeDecoder, int NumBitLevels) + { + uint m = 1; + uint symbol = 0; + for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++) + { + uint bit = Models[startIndex + m].Decode(rangeDecoder); + m <<= 1; + m += bit; + symbol |= (bit << bitIndex); + } + return symbol; + } + } +} diff --git a/Saviour Backup System/Saviour Backup System.csproj b/Saviour Backup System/Saviour Backup System.csproj index 1789834..ceb79e7 100644 --- a/Saviour Backup System/Saviour Backup System.csproj +++ b/Saviour Backup System/Saviour Backup System.csproj @@ -97,6 +97,21 @@ + + + + + + + + + + + + + + + Form @@ -255,6 +270,7 @@ Assembly +