1 files changed, 715 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Bundles/LzmaSpec/LzmaSpec.cpp b/other-licenses/7zstub/src/CPP/7zip/Bundles/LzmaSpec/LzmaSpec.cpp
new file mode 100644
index 0000000000..67e8dfc799
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/Bundles/LzmaSpec/LzmaSpec.cpp
@@ -0,0 +1,715 @@
+/* LzmaSpec.cpp -- LZMA Reference Decoder
+2015-06-14 : Igor Pavlov : Public domain */
+
+// This code implements LZMA file decoding according to LZMA specification.
+// This code is not optimized for speed.
+
+#include <stdio.h>
+
+#ifdef _MSC_VER
+  #pragma warning(disable : 4710) // function not inlined
+  #pragma warning(disable : 4996) // This function or variable may be unsafe
+#endif
+
+typedef unsigned char Byte;
+typedef unsigned short UInt16;
+
+#ifdef _LZMA_UINT32_IS_ULONG
+  typedef unsigned long UInt32;
+#else
+  typedef unsigned int UInt32;
+#endif
+
+#if defined(_MSC_VER) || defined(__BORLANDC__)
+  typedef unsigned __int64 UInt64;
+#else
+  typedef unsigned long long int UInt64;
+#endif
+
+
+struct CInputStream
+{
+  FILE *File;
+  UInt64 Processed;
+  
+  void Init() { Processed = 0; }
+
+  Byte ReadByte()
+  {
+    int c = getc(File);
+    if (c < 0)
+      throw "Unexpected end of file";
+    Processed++;
+    return (Byte)c;
+  }
+};
+
+
+struct COutStream
+{
+  FILE *File;
+  UInt64 Processed;
+
+  void Init() { Processed = 0; }
+
+  void WriteByte(Byte b)
+  {
+    if (putc(b, File) == EOF)
+      throw "File writing error";
+    Processed++;
+  }
+};
+
+
+class COutWindow
+{
+  Byte *Buf;
+  UInt32 Pos;
+  UInt32 Size;
+  bool IsFull;
+
+public:
+  unsigned TotalPos;
+  COutStream OutStream;
+
+  COutWindow(): Buf(NULL) {}
+  ~COutWindow() { delete []Buf; }
+ 
+  void Create(UInt32 dictSize)
+  {
+    Buf = new Byte[dictSize];
+    Pos = 0;
+    Size = dictSize;
+    IsFull = false;
+    TotalPos = 0;
+  }
+
+  void PutByte(Byte b)
+  {
+    TotalPos++;
+    Buf[Pos++] = b;
+    if (Pos == Size)
+    {
+      Pos = 0;
+      IsFull = true;
+    }
+    OutStream.WriteByte(b);
+  }
+
+  Byte GetByte(UInt32 dist) const
+  {
+    return Buf[dist <= Pos ? Pos - dist : Size - dist + Pos];
+  }
+
+  void CopyMatch(UInt32 dist, unsigned len)
+  {
+    for (; len > 0; len--)
+      PutByte(GetByte(dist));
+  }
+
+  bool CheckDistance(UInt32 dist) const
+  {
+    return dist <= Pos || IsFull;
+  }
+
+  bool IsEmpty() const
+  {
+    return Pos == 0 && !IsFull;
+  }
+};
+
+
+#define kNumBitModelTotalBits 11
+#define kNumMoveBits 5
+
+typedef UInt16 CProb;
+
+#define PROB_INIT_VAL ((1 << kNumBitModelTotalBits) / 2)
+
+#define INIT_PROBS(p) \
+ { for (unsigned i = 0; i < sizeof(p) / sizeof(p[0]); i++) p[i] = PROB_INIT_VAL; }
+
+class CRangeDecoder
+{
+  UInt32 Range;
+  UInt32 Code;
+
+  void Normalize();
+
+public:
+
+  CInputStream *InStream;
+  bool Corrupted;
+
+  bool Init();
+  bool IsFinishedOK() const { return Code == 0; }
+
+  UInt32 DecodeDirectBits(unsigned numBits);
+  unsigned DecodeBit(CProb *prob);
+};
+
+bool CRangeDecoder::Init()
+{
+  Corrupted = false;
+  Range = 0xFFFFFFFF;
+  Code = 0;
+
+  Byte b = InStream->ReadByte();
+  
+  for (int i = 0; i < 4; i++)
+    Code = (Code << 8) | InStream->ReadByte();
+  
+  if (b != 0 || Code == Range)
+    Corrupted = true;
+  return b == 0;
+}
+
+#define kTopValue ((UInt32)1 << 24)
+
+void CRangeDecoder::Normalize()
+{
+  if (Range < kTopValue)
+  {
+    Range <<= 8;
+    Code = (Code << 8) | InStream->ReadByte();
+  }
+}
+
+UInt32 CRangeDecoder::DecodeDirectBits(unsigned numBits)
+{
+  UInt32 res = 0;
+  do
+  {
+    Range >>= 1;
+    Code -= Range;
+    UInt32 t = 0 - ((UInt32)Code >> 31);
+    Code += Range & t;
+    
+    if (Code == Range)
+      Corrupted = true;
+    
+    Normalize();
+    res <<= 1;
+    res += t + 1;
+  }
+  while (--numBits);
+  return res;
+}
+
+unsigned CRangeDecoder::DecodeBit(CProb *prob)
+{
+  unsigned v = *prob;
+  UInt32 bound = (Range >> kNumBitModelTotalBits) * v;
+  unsigned symbol;
+  if (Code < bound)
+  {
+    v += ((1 << kNumBitModelTotalBits) - v) >> kNumMoveBits;
+    Range = bound;
+    symbol = 0;
+  }
+  else
+  {
+    v -= v >> kNumMoveBits;
+    Code -= bound;
+    Range -= bound;
+    symbol = 1;
+  }
+  *prob = (CProb)v;
+  Normalize();
+  return symbol;
+}
+
+
+unsigned BitTreeReverseDecode(CProb *probs, unsigned numBits, CRangeDecoder *rc)
+{
+  unsigned m = 1;
+  unsigned symbol = 0;
+  for (unsigned i = 0; i < numBits; i++)
+  {
+    unsigned bit = rc->DecodeBit(&probs[m]);
+    m <<= 1;
+    m += bit;
+    symbol |= (bit << i);
+  }
+  return symbol;
+}
+
+template <unsigned NumBits>
+class CBitTreeDecoder
+{
+  CProb Probs[(unsigned)1 << NumBits];
+
+public:
+
+  void Init()
+  {
+    INIT_PROBS(Probs);
+  }
+
+  unsigned Decode(CRangeDecoder *rc)
+  {
+    unsigned m = 1;
+    for (unsigned i = 0; i < NumBits; i++)
+      m = (m << 1) + rc->DecodeBit(&Probs[m]);
+    return m - ((unsigned)1 << NumBits);
+  }
+
+  unsigned ReverseDecode(CRangeDecoder *rc)
+  {
+    return BitTreeReverseDecode(Probs, NumBits, rc);
+  }
+};
+
+#define kNumPosBitsMax 4
+
+#define kNumStates 12
+#define kNumLenToPosStates 4
+#define kNumAlignBits 4
+#define kStartPosModelIndex 4
+#define kEndPosModelIndex 14
+#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
+#define kMatchMinLen 2
+
+class CLenDecoder
+{
+  CProb Choice;
+  CProb Choice2;
+  CBitTreeDecoder<3> LowCoder[1 << kNumPosBitsMax];
+  CBitTreeDecoder<3> MidCoder[1 << kNumPosBitsMax];
+  CBitTreeDecoder<8> HighCoder;
+
+public:
+
+  void Init()
+  {
+    Choice = PROB_INIT_VAL;
+    Choice2 = PROB_INIT_VAL;
+    HighCoder.Init();
+    for (unsigned i = 0; i < (1 << kNumPosBitsMax); i++)
+    {
+      LowCoder[i].Init();
+      MidCoder[i].Init();
+    }
+  }
+
+  unsigned Decode(CRangeDecoder *rc, unsigned posState)
+  {
+    if (rc->DecodeBit(&Choice) == 0)
+      return LowCoder[posState].Decode(rc);
+    if (rc->DecodeBit(&Choice2) == 0)
+      return 8 + MidCoder[posState].Decode(rc);
+    return 16 + HighCoder.Decode(rc);
+  }
+};
+
+unsigned UpdateState_Literal(unsigned state)
+{
+  if (state < 4) return 0;
+  else if (state < 10) return state - 3;
+  else return state - 6;
+}
+unsigned UpdateState_Match   (unsigned state) { return state < 7 ? 7 : 10; }
+unsigned UpdateState_Rep     (unsigned state) { return state < 7 ? 8 : 11; }
+unsigned UpdateState_ShortRep(unsigned state) { return state < 7 ? 9 : 11; }
+
+#define LZMA_DIC_MIN (1 << 12)
+
+class CLzmaDecoder
+{
+public:
+  CRangeDecoder RangeDec;
+  COutWindow OutWindow;
+
+  bool markerIsMandatory;
+  unsigned lc, pb, lp;
+  UInt32 dictSize;
+  UInt32 dictSizeInProperties;
+
+  void DecodeProperties(const Byte *properties)
+  {
+    unsigned d = properties[0];
+    if (d >= (9 * 5 * 5))
+      throw "Incorrect LZMA properties";
+    lc = d % 9;
+    d /= 9;
+    pb = d / 5;
+    lp = d % 5;
+    dictSizeInProperties = 0;
+    for (int i = 0; i < 4; i++)
+      dictSizeInProperties |= (UInt32)properties[i + 1] << (8 * i);
+    dictSize = dictSizeInProperties;
+    if (dictSize < LZMA_DIC_MIN)
+      dictSize = LZMA_DIC_MIN;
+  }
+
+  CLzmaDecoder(): LitProbs(NULL) {}
+  ~CLzmaDecoder() { delete []LitProbs; }
+
+  void Create()
+  {
+    OutWindow.Create(dictSize);
+    CreateLiterals();
+  }
+
+  int Decode(bool unpackSizeDefined, UInt64 unpackSize);
+  
+private:
+
+  CProb *LitProbs;
+
+  void CreateLiterals()
+  {
+    LitProbs = new CProb[(UInt32)0x300 << (lc + lp)];
+  }
+  
+  void InitLiterals()
+  {
+    UInt32 num = (UInt32)0x300 << (lc + lp);
+    for (UInt32 i = 0; i < num; i++)
+      LitProbs[i] = PROB_INIT_VAL;
+  }
+  
+  void DecodeLiteral(unsigned state, UInt32 rep0)
+  {
+    unsigned prevByte = 0;
+    if (!OutWindow.IsEmpty())
+      prevByte = OutWindow.GetByte(1);
+    
+    unsigned symbol = 1;
+    unsigned litState = ((OutWindow.TotalPos & ((1 << lp) - 1)) << lc) + (prevByte >> (8 - lc));
+    CProb *probs = &LitProbs[(UInt32)0x300 * litState];
+    
+    if (state >= 7)
+    {
+      unsigned matchByte = OutWindow.GetByte(rep0 + 1);
+      do
+      {
+        unsigned matchBit = (matchByte >> 7) & 1;
+        matchByte <<= 1;
+        unsigned bit = RangeDec.DecodeBit(&probs[((1 + matchBit) << 8) + symbol]);
+        symbol = (symbol << 1) | bit;
+        if (matchBit != bit)
+          break;
+      }
+      while (symbol < 0x100);
+    }
+    while (symbol < 0x100)
+      symbol = (symbol << 1) | RangeDec.DecodeBit(&probs[symbol]);
+    OutWindow.PutByte((Byte)(symbol - 0x100));
+  }
+
+  CBitTreeDecoder<6> PosSlotDecoder[kNumLenToPosStates];
+  CBitTreeDecoder<kNumAlignBits> AlignDecoder;
+  CProb PosDecoders[1 + kNumFullDistances - kEndPosModelIndex];
+  
+  void InitDist()
+  {
+    for (unsigned i = 0; i < kNumLenToPosStates; i++)
+      PosSlotDecoder[i].Init();
+    AlignDecoder.Init();
+    INIT_PROBS(PosDecoders);
+  }
+  
+  unsigned DecodeDistance(unsigned len)
+  {
+    unsigned lenState = len;
+    if (lenState > kNumLenToPosStates - 1)
+      lenState = kNumLenToPosStates - 1;
+    
+    unsigned posSlot = PosSlotDecoder[lenState].Decode(&RangeDec);
+    if (posSlot < 4)
+      return posSlot;
+    
+    unsigned numDirectBits = (unsigned)((posSlot >> 1) - 1);
+    UInt32 dist = ((2 | (posSlot & 1)) << numDirectBits);
+    if (posSlot < kEndPosModelIndex)
+      dist += BitTreeReverseDecode(PosDecoders + dist - posSlot, numDirectBits, &RangeDec);
+    else
+    {
+      dist += RangeDec.DecodeDirectBits(numDirectBits - kNumAlignBits) << kNumAlignBits;
+      dist += AlignDecoder.ReverseDecode(&RangeDec);
+    }
+    return dist;
+  }
+
+  CProb IsMatch[kNumStates << kNumPosBitsMax];
+  CProb IsRep[kNumStates];
+  CProb IsRepG0[kNumStates];
+  CProb IsRepG1[kNumStates];
+  CProb IsRepG2[kNumStates];
+  CProb IsRep0Long[kNumStates << kNumPosBitsMax];
+
+  CLenDecoder LenDecoder;
+  CLenDecoder RepLenDecoder;
+
+  void Init()
+  {
+    InitLiterals();
+    InitDist();
+
+    INIT_PROBS(IsMatch);
+    INIT_PROBS(IsRep);
+    INIT_PROBS(IsRepG0);
+    INIT_PROBS(IsRepG1);
+    INIT_PROBS(IsRepG2);
+    INIT_PROBS(IsRep0Long);
+
+    LenDecoder.Init();
+    RepLenDecoder.Init();
+  }
+};
+    
+
+#define LZMA_RES_ERROR                   0
+#define LZMA_RES_FINISHED_WITH_MARKER    1
+#define LZMA_RES_FINISHED_WITHOUT_MARKER 2
+
+int CLzmaDecoder::Decode(bool unpackSizeDefined, UInt64 unpackSize)
+{
+  if (!RangeDec.Init())
+    return LZMA_RES_ERROR;
+
+  Init();
+
+  UInt32 rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0;
+  unsigned state = 0;
+  
+  for (;;)
+  {
+    if (unpackSizeDefined && unpackSize == 0 && !markerIsMandatory)
+      if (RangeDec.IsFinishedOK())
+        return LZMA_RES_FINISHED_WITHOUT_MARKER;
+
+    unsigned posState = OutWindow.TotalPos & ((1 << pb) - 1);
+
+    if (RangeDec.DecodeBit(&IsMatch[(state << kNumPosBitsMax) + posState]) == 0)
+    {
+      if (unpackSizeDefined && unpackSize == 0)
+        return LZMA_RES_ERROR;
+      DecodeLiteral(state, rep0);
+      state = UpdateState_Literal(state);
+      unpackSize--;
+      continue;
+    }
+    
+    unsigned len;
+    
+    if (RangeDec.DecodeBit(&IsRep[state]) != 0)
+    {
+      if (unpackSizeDefined && unpackSize == 0)
+        return LZMA_RES_ERROR;
+      if (OutWindow.IsEmpty())
+        return LZMA_RES_ERROR;
+      if (RangeDec.DecodeBit(&IsRepG0[state]) == 0)
+      {
+        if (RangeDec.DecodeBit(&IsRep0Long[(state << kNumPosBitsMax) + posState]) == 0)
+        {
+          state = UpdateState_ShortRep(state);
+          OutWindow.PutByte(OutWindow.GetByte(rep0 + 1));
+          unpackSize--;
+          continue;
+        }
+      }
+      else
+      {
+        UInt32 dist;
+        if (RangeDec.DecodeBit(&IsRepG1[state]) == 0)
+          dist = rep1;
+        else
+        {
+          if (RangeDec.DecodeBit(&IsRepG2[state]) == 0)
+            dist = rep2;
+          else
+          {
+            dist = rep3;
+            rep3 = rep2;
+          }
+          rep2 = rep1;
+        }
+        rep1 = rep0;
+        rep0 = dist;
+      }
+      len = RepLenDecoder.Decode(&RangeDec, posState);
+      state = UpdateState_Rep(state);
+    }
+    else
+    {
+      rep3 = rep2;
+      rep2 = rep1;
+      rep1 = rep0;
+      len = LenDecoder.Decode(&RangeDec, posState);
+      state = UpdateState_Match(state);
+      rep0 = DecodeDistance(len);
+      if (rep0 == 0xFFFFFFFF)
+        return RangeDec.IsFinishedOK() ?
+            LZMA_RES_FINISHED_WITH_MARKER :
+            LZMA_RES_ERROR;
+
+      if (unpackSizeDefined && unpackSize == 0)
+        return LZMA_RES_ERROR;
+      if (rep0 >= dictSize || !OutWindow.CheckDistance(rep0))
+        return LZMA_RES_ERROR;
+    }
+    len += kMatchMinLen;
+    bool isError = false;
+    if (unpackSizeDefined && unpackSize < len)
+    {
+      len = (unsigned)unpackSize;
+      isError = true;
+    }
+    OutWindow.CopyMatch(rep0 + 1, len);
+    unpackSize -= len;
+    if (isError)
+      return LZMA_RES_ERROR;
+  }
+}
+
+static void Print(const char *s)
+{
+  fputs(s, stdout);
+}
+
+static void PrintError(const char *s)
+{
+  fputs(s, stderr);
+}
+
+
+#define CONVERT_INT_TO_STR(charType, tempSize) \
+
+void ConvertUInt64ToString(UInt64 val, char *s)
+{
+  char temp[32];
+  unsigned i = 0;
+  while (val >= 10)
+  {
+    temp[i++] = (char)('0' + (unsigned)(val % 10));
+    val /= 10;
+  }
+  *s++ = (char)('0' + (unsigned)val);
+  while (i != 0)
+  {
+    i--;
+    *s++ = temp[i];
+  }
+  *s = 0;
+}
+
+void PrintUInt64(const char *title, UInt64 v)
+{
+  Print(title);
+  Print(" : ");
+  char s[32];
+  ConvertUInt64ToString(v, s);
+  Print(s);
+  Print(" bytes \n");
+}
+
+int main2(int numArgs, const char *args[])
+{
+  Print("\nLZMA Reference Decoder 15.00 : Igor Pavlov : Public domain : 2015-04-16\n");
+  if (numArgs == 1)
+    Print("\nUse: lzmaSpec a.lzma outFile");
+
+  if (numArgs != 3)
+    throw "you must specify two parameters";
+
+  CInputStream inStream;
+  inStream.File = fopen(args[1], "rb");
+  inStream.Init();
+  if (inStream.File == 0)
+    throw "Can't open input file";
+
+  CLzmaDecoder lzmaDecoder;
+  lzmaDecoder.OutWindow.OutStream.File = fopen(args[2], "wb+");
+  lzmaDecoder.OutWindow.OutStream.Init();
+  if (inStream.File == 0)
+    throw "Can't open output file";
+
+  Byte header[13];
+  int i;
+  for (i = 0; i < 13; i++)
+    header[i] = inStream.ReadByte();
+
+  lzmaDecoder.DecodeProperties(header);
+
+  printf("\nlc=%d, lp=%d, pb=%d", lzmaDecoder.lc, lzmaDecoder.lp, lzmaDecoder.pb);
+  printf("\nDictionary Size in properties = %u", lzmaDecoder.dictSizeInProperties);
+  printf("\nDictionary Size for decoding  = %u", lzmaDecoder.dictSize);
+
+  UInt64 unpackSize = 0;
+  bool unpackSizeDefined = false;
+  for (i = 0; i < 8; i++)
+  {
+    Byte b = header[5 + i];
+    if (b != 0xFF)
+      unpackSizeDefined = true;
+    unpackSize |= (UInt64)b << (8 * i);
+  }
+
+  lzmaDecoder.markerIsMandatory = !unpackSizeDefined;
+
+  Print("\n");
+  if (unpackSizeDefined)
+    PrintUInt64("Uncompressed Size", unpackSize);
+  else
+    Print("End marker is expected\n");
+  lzmaDecoder.RangeDec.InStream = &inStream;
+
+  Print("\n");
+
+  lzmaDecoder.Create();
+  
+  int res = lzmaDecoder.Decode(unpackSizeDefined, unpackSize);
+
+  PrintUInt64("Read    ", inStream.Processed);
+  PrintUInt64("Written ", lzmaDecoder.OutWindow.OutStream.Processed);
+
+  if (res == LZMA_RES_ERROR)
+    throw "LZMA decoding error";
+  else if (res == LZMA_RES_FINISHED_WITHOUT_MARKER)
+    Print("Finished without end marker");
+  else if (res == LZMA_RES_FINISHED_WITH_MARKER)
+  {
+    if (unpackSizeDefined)
+    {
+      if (lzmaDecoder.OutWindow.OutStream.Processed != unpackSize)
+        throw "Finished with end marker before than specified size";
+      Print("Warning: ");
+    }
+    Print("Finished with end marker");
+  }
+  else
+    throw "Internal Error";
+
+  Print("\n");
+  
+  if (lzmaDecoder.RangeDec.Corrupted)
+  {
+    Print("\nWarning: LZMA stream is corrupted\n");
+  }
+
+  return 0;
+}
+
+
+int
+  #ifdef _MSC_VER
+    __cdecl
+  #endif
+main(int numArgs, const char *args[])
+{
+  try { return main2(numArgs, args); }
+  catch (const char *s)
+  {
+    PrintError("\nError:\n");
+    PrintError(s);
+    PrintError("\n");
+    return 1;
+  }
+  catch(...)
+  {
+    PrintError("\nError\n");
+    return 1;
+  }
+}