1 files changed, 480 insertions, 0 deletions
diff --git a/src/libs/7zip/unix/CPP/7zip/Compress/Rar1Decoder.cpp b/src/libs/7zip/unix/CPP/7zip/Compress/Rar1Decoder.cpp
new file mode 100644
index 000000000..eadca7b3d
--- /dev/null
+++ b/src/libs/7zip/unix/CPP/7zip/Compress/Rar1Decoder.cpp
@@ -0,0 +1,480 @@
+// Rar1Decoder.cpp
+// According to unRAR license, this code may not be used to develop
+// a program that creates RAR archives
+ 
+#include "StdAfx.h"
+
+#include "Rar1Decoder.h"
+
+namespace NCompress {
+namespace NRar1 {
+
+static UInt32 PosL1[]={0,0,0,2,3,5,7,11,16,20,24,32,32, 256};
+static UInt32 PosL2[]={0,0,0,0,5,7,9,13,18,22,26,34,36, 256};
+static UInt32 PosHf0[]={0,0,0,0,0,8,16,24,33,33,33,33,33, 257};
+static UInt32 PosHf1[]={0,0,0,0,0,0,4,44,60,76,80,80,127, 257};
+static UInt32 PosHf2[]={0,0,0,0,0,0,2,7,53,117,233, 257,0};
+static UInt32 PosHf3[]={0,0,0,0,0,0,0,2,16,218,251, 257,0};
+static UInt32 PosHf4[]={0,0,0,0,0,0,0,0,0,255, 257,0,0};
+
+static const UInt32 kHistorySize = (1 << 16);
+
+class CCoderReleaser
+{
+  CDecoder *m_Coder;
+public:
+  CCoderReleaser(CDecoder *coder): m_Coder(coder) {}
+  ~CCoderReleaser() { m_Coder->ReleaseStreams(); }
+};
+
+CDecoder::CDecoder(): m_IsSolid(false) { }
+
+void CDecoder::InitStructures()
+{
+  for(int i = 0; i < kNumRepDists; i++)
+    m_RepDists[i] = 0;
+  m_RepDistPtr = 0;
+  LastLength = 0;
+  LastDist = 0;
+}
+
+UInt32 CDecoder::ReadBits(int numBits) { return m_InBitStream.ReadBits(numBits); }
+
+HRESULT CDecoder::CopyBlock(UInt32 distance, UInt32 len)
+{
+  if (len == 0)
+    return S_FALSE;
+  m_UnpackSize -= len;
+  return m_OutWindowStream.CopyBlock(distance, len) ? S_OK : S_FALSE;
+}
+
+
+UInt32 CDecoder::DecodeNum(const UInt32 *posTab)
+{
+  UInt32 startPos = 2;
+  UInt32 num = m_InBitStream.GetValue(12);
+  for (;;)
+  {
+    UInt32 cur = (posTab[startPos + 1] - posTab[startPos]) << (12 - startPos);
+    if (num < cur)
+      break;
+    startPos++;
+    num -= cur;
+  }
+  m_InBitStream.MovePos(startPos);
+  return((num >> (12 - startPos)) + posTab[startPos]);
+}
+
+static Byte kShortLen1[]  = {1,3,4,4,5,6,7,8,8,4,4,5,6,6 };
+static Byte kShortLen1a[] = {1,4,4,4,5,6,7,8,8,4,4,5,6,6,4 };
+static Byte kShortLen2[]  = {2,3,3,3,4,4,5,6,6,4,4,5,6,6 };
+static Byte kShortLen2a[] = {2,3,3,4,4,4,5,6,6,4,4,5,6,6,4 };
+static UInt32 kShortXor1[] = {0,0xa0,0xd0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,0xc0,0x80,0x90,0x98,0x9c,0xb0};
+static UInt32 kShortXor2[] = {0,0x40,0x60,0xa0,0xd0,0xe0,0xf0,0xf8,0xfc,0xc0,0x80,0x90,0x98,0x9c,0xb0};
+
+HRESULT CDecoder::ShortLZ()
+{
+  UInt32 len, saveLen, dist;
+  int distancePlace;
+  Byte *kShortLen;
+  const UInt32 *kShortXor;
+  NumHuf = 0;
+
+  if (LCount == 2)
+  {
+    if (ReadBits(1))
+      return CopyBlock(LastDist, LastLength);
+    LCount = 0;
+  }
+
+  UInt32 bitField = m_InBitStream.GetValue(8);
+
+  if (AvrLn1 < 37)
+  {
+    kShortLen = Buf60 ? kShortLen1a : kShortLen1;
+    kShortXor = kShortXor1;
+  }
+  else
+  {
+    kShortLen = Buf60 ? kShortLen2a : kShortLen2;
+    kShortXor = kShortXor2;
+  }
+
+  for (len = 0; ((bitField ^ kShortXor[len]) & (~(0xff >> kShortLen[len]))) != 0; len++);
+  m_InBitStream.MovePos(kShortLen[len]);
+
+  if (len >= 9)
+  {
+    if (len == 9)
+    {
+      LCount++;
+      return CopyBlock(LastDist, LastLength);
+    }
+    if (len == 14)
+    {
+      LCount = 0;
+      len = DecodeNum(PosL2) + 5;
+      dist = 0x8000 + ReadBits(15) - 1;
+      LastLength = len;
+      LastDist = dist;
+      return CopyBlock(dist, len);
+    }
+
+    LCount = 0;
+    saveLen = len;
+    dist = m_RepDists[(m_RepDistPtr - (len - 9)) & 3];
+    len = DecodeNum(PosL1) + 2;
+    if (len == 0x101 && saveLen == 10)
+    {
+      Buf60 ^= 1;
+      return S_OK;
+    }
+    if (dist >= 256)
+      len++;
+    if (dist >= MaxDist3 - 1)
+      len++;
+  }
+  else
+  {
+    LCount = 0;
+    AvrLn1 += len;
+    AvrLn1 -= AvrLn1 >> 4;
+    
+    distancePlace = DecodeNum(PosHf2) & 0xff;
+    dist = ChSetA[distancePlace];
+    if (--distancePlace != -1)
+    {
+      PlaceA[dist]--;
+      UInt32 lastDistance = ChSetA[distancePlace];
+      PlaceA[lastDistance]++;
+      ChSetA[distancePlace + 1] = lastDistance;
+      ChSetA[distancePlace] = dist;
+    }
+    len += 2;
+  }
+  m_RepDists[m_RepDistPtr++] = dist;
+  m_RepDistPtr &= 3;
+  LastLength = len;
+  LastDist = dist;
+  return CopyBlock(dist, len);
+}
+
+
+HRESULT CDecoder::LongLZ()
+{
+  UInt32 len;
+  UInt32 dist;
+  UInt32 distancePlace, newDistancePlace;
+  UInt32 oldAvr2, oldAvr3;
+
+  NumHuf = 0;
+  Nlzb += 16;
+  if (Nlzb > 0xff)
+  {
+    Nlzb = 0x90;
+    Nhfb >>= 1;
+  }
+  oldAvr2=AvrLn2;
+
+  if (AvrLn2 >= 122)
+    len = DecodeNum(PosL2);
+  else if (AvrLn2 >= 64)
+    len = DecodeNum(PosL1);
+  else
+  {
+    UInt32 bitField = m_InBitStream.GetValue(16);
+    if (bitField < 0x100)
+    {
+      len = bitField;
+      m_InBitStream.MovePos(16);
+    }
+    else
+    {
+      for (len = 0; ((bitField << len) & 0x8000) == 0; len++)
+        ;
+      m_InBitStream.MovePos(len + 1);
+    }
+  }
+
+  AvrLn2 += len;
+  AvrLn2 -= AvrLn2 >> 5;
+
+  if (AvrPlcB > 0x28ff)
+    distancePlace = DecodeNum(PosHf2);
+  else if (AvrPlcB > 0x6ff)
+    distancePlace = DecodeNum(PosHf1);
+  else
+    distancePlace = DecodeNum(PosHf0);
+
+  AvrPlcB += distancePlace;
+  AvrPlcB -= AvrPlcB >> 8;
+  for (;;)
+  {
+    dist = ChSetB[distancePlace & 0xff];
+    newDistancePlace = NToPlB[dist++ & 0xff]++;
+    if (!(dist & 0xff))
+      CorrHuff(ChSetB,NToPlB);
+    else
+      break;
+  }
+
+  ChSetB[distancePlace] = ChSetB[newDistancePlace];
+  ChSetB[newDistancePlace] = dist;
+
+  dist = ((dist & 0xff00) >> 1) | ReadBits(7);
+
+  oldAvr3 = AvrLn3;
+  if (len != 1 && len != 4)
+    if (len == 0 && dist <= MaxDist3)
+    {
+      AvrLn3++;
+      AvrLn3 -= AvrLn3 >> 8;
+    }
+    else
+      if (AvrLn3 > 0)
+        AvrLn3--;
+  len += 3;
+  if (dist >= MaxDist3)
+    len++;
+  if (dist <= 256)
+    len += 8;
+  if (oldAvr3 > 0xb0 || AvrPlc >= 0x2a00 && oldAvr2 < 0x40)
+    MaxDist3 = 0x7f00;
+  else
+    MaxDist3 = 0x2001;
+  m_RepDists[m_RepDistPtr++] = --dist;
+  m_RepDistPtr &= 3;
+  LastLength = len;
+  LastDist = dist;
+  return CopyBlock(dist, len);
+}
+
+
+HRESULT CDecoder::HuffDecode()
+{
+  UInt32 curByte, newBytePlace;
+  UInt32 len;
+  UInt32 dist;
+  int bytePlace;
+
+  if      (AvrPlc > 0x75ff)  bytePlace = DecodeNum(PosHf4);
+  else if (AvrPlc > 0x5dff)  bytePlace = DecodeNum(PosHf3);
+  else if (AvrPlc > 0x35ff)  bytePlace = DecodeNum(PosHf2);
+  else if (AvrPlc > 0x0dff)  bytePlace = DecodeNum(PosHf1);
+  else                       bytePlace = DecodeNum(PosHf0);
+  if (StMode)
+  {
+    if (--bytePlace == -1)
+    {
+      if (ReadBits(1))
+      {
+        NumHuf = StMode = 0;
+        return S_OK;
+      }
+      else
+      {
+        len = (ReadBits(1)) ? 4 : 3;
+        dist = DecodeNum(PosHf2);
+        dist = (dist << 5) | ReadBits(5);
+        return CopyBlock(dist - 1, len);
+      }
+    }
+  }
+  else if (NumHuf++ >= 16 && FlagsCnt == 0)
+    StMode = 1;
+  bytePlace &= 0xff;
+  AvrPlc += bytePlace;
+  AvrPlc -= AvrPlc >> 8;
+  Nhfb+=16;
+  if (Nhfb > 0xff)
+  {
+    Nhfb=0x90;
+    Nlzb >>= 1;
+  }
+
+  m_UnpackSize --;
+  m_OutWindowStream.PutByte((Byte)(ChSet[bytePlace] >> 8));
+
+  for (;;)
+  {
+    curByte = ChSet[bytePlace];
+    newBytePlace = NToPl[curByte++ & 0xff]++;
+    if ((curByte & 0xff) > 0xa1)
+      CorrHuff(ChSet, NToPl);
+    else
+      break;
+  }
+
+  ChSet[bytePlace] = ChSet[newBytePlace];
+  ChSet[newBytePlace] = curByte;
+  return S_OK;
+}
+
+
+void CDecoder::GetFlagsBuf()
+{
+  UInt32 flags, newFlagsPlace;
+  UInt32 flagsPlace = DecodeNum(PosHf2);
+
+  for (;;)
+  {
+    flags = ChSetC[flagsPlace];
+    FlagBuf = flags >> 8;
+    newFlagsPlace = NToPlC[flags++ & 0xff]++;
+    if ((flags & 0xff) != 0)
+      break;
+    CorrHuff(ChSetC, NToPlC);
+  }
+
+  ChSetC[flagsPlace] = ChSetC[newFlagsPlace];
+  ChSetC[newFlagsPlace] = flags;
+}
+
+void CDecoder::InitData()
+{
+  if (!m_IsSolid)
+  {
+    AvrPlcB = AvrLn1 = AvrLn2 = AvrLn3 = NumHuf = Buf60 = 0;
+    AvrPlc = 0x3500;
+    MaxDist3 = 0x2001;
+    Nhfb = Nlzb = 0x80;
+  }
+  FlagsCnt = 0;
+  FlagBuf = 0;
+  StMode = 0;
+  LCount = 0;
+}
+
+void CDecoder::CorrHuff(UInt32 *CharSet,UInt32 *NumToPlace)
+{
+  int i;
+  for (i = 7; i >= 0; i--)
+    for (int j = 0; j < 32; j++, CharSet++)
+      *CharSet = (*CharSet & ~0xff) | i;
+  memset(NumToPlace, 0, sizeof(NToPl));
+  for (i = 6; i >= 0; i--)
+    NumToPlace[i] = (7 - i) * 32;
+}
+
+void CDecoder::InitHuff()
+{
+  for (UInt32 i = 0; i < 256; i++)
+  {
+    Place[i] = PlaceA[i] = PlaceB[i] = i;
+    PlaceC[i] = (~i + 1) & 0xff;
+    ChSet[i] = ChSetB[i] = i << 8;
+    ChSetA[i] = i;
+    ChSetC[i] = ((~i + 1) & 0xff) << 8;
+  }
+  memset(NToPl, 0, sizeof(NToPl));
+  memset(NToPlB, 0, sizeof(NToPlB));
+  memset(NToPlC, 0, sizeof(NToPlC));
+  CorrHuff(ChSetB, NToPlB);
+}
+
+HRESULT CDecoder::CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream,
+    const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo * /* progress */)
+{
+  if (inSize == NULL || outSize == NULL)
+    return E_INVALIDARG;
+
+  if (!m_OutWindowStream.Create(kHistorySize))
+    return E_OUTOFMEMORY;
+  if (!m_InBitStream.Create(1 << 20))
+    return E_OUTOFMEMORY;
+
+  m_UnpackSize = (Int64)*outSize;
+  m_OutWindowStream.SetStream(outStream);
+  m_OutWindowStream.Init(m_IsSolid);
+  m_InBitStream.SetStream(inStream);
+  m_InBitStream.Init();
+
+  CCoderReleaser coderReleaser(this);
+  InitData();
+  if (!m_IsSolid)
+  {
+    InitStructures();
+    InitHuff();
+  }
+  if (m_UnpackSize > 0)
+  {
+    GetFlagsBuf();
+    FlagsCnt = 8;
+  }
+
+  while (m_UnpackSize > 0)
+  {
+    if (StMode)
+    {
+      RINOK(HuffDecode());
+      continue;
+    }
+
+    if (--FlagsCnt < 0)
+    {
+      GetFlagsBuf();
+      FlagsCnt=7;
+    }
+
+    if (FlagBuf & 0x80)
+    {
+      FlagBuf <<= 1;
+      if (Nlzb > Nhfb)
+      {
+        RINOK(LongLZ());
+      }
+      else
+      {
+        RINOK(HuffDecode());
+      }
+    }
+    else
+    {
+      FlagBuf <<= 1;
+      if (--FlagsCnt < 0)
+      {
+        GetFlagsBuf();
+        FlagsCnt = 7;
+      }
+      if (FlagBuf & 0x80)
+      {
+        FlagBuf <<= 1;
+        if (Nlzb > Nhfb)
+        {
+          RINOK(HuffDecode());
+        }
+        else
+        {
+          RINOK(LongLZ());
+        }
+      }
+      else
+      {
+        FlagBuf <<= 1;
+        RINOK(ShortLZ());
+      }
+    }
+  }
+  if (m_UnpackSize < 0)
+    return S_FALSE;
+  return m_OutWindowStream.Flush();
+}
+
+STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
+    const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress)
+{
+  try { return CodeReal(inStream, outStream, inSize, outSize, progress); }
+  catch(const CInBufferException &e) { return e.ErrorCode; }
+  catch(const CLzOutWindowException &e) { return e.ErrorCode; }
+  catch(...) { return S_FALSE; }
+}
+
+STDMETHODIMP CDecoder::SetDecoderProperties2(const Byte *data, UInt32 size)
+{
+  if (size < 1)
+    return E_INVALIDARG;
+  m_IsSolid = (data[0] != 0);
+  return S_OK;
+}
+
+}}