4.44 beta

CPP/7zip/Compress/Arj/ArjDecoder1.cpp

@@ -0,0 +1,319 @@
+// Arj/Decoder.cpp
+
+#include "StdAfx.h"
+
+#include "ArjDecoder1.h"
+
+#include "Windows/Defs.h"
+
+namespace NCompress{
+namespace NArj {
+namespace NDecoder1 {
+
+static const UInt32 kHistorySize = 26624;
+static const UInt32 kMatchMaxLen = 256;
+static const UInt32 kMatchMinLen = 3;
+
+static const UInt32 kNC = 255 + kMatchMaxLen + 2 - kMatchMinLen;
+
+void CCoder::MakeTable(int nchar, Byte *bitlen, int tablebits, 
+    UInt32 *table, int tablesize)
+{
+  UInt32 count[17], weight[17], start[18], *p;
+  UInt32 i, k, len, ch, jutbits, avail, nextcode, mask;
+  
+  for (i = 1; i <= 16; i++)
+    count[i] = 0;
+  for (i = 0; (int)i < nchar; i++)
+    count[bitlen[i]]++;
+  
+  start[1] = 0;
+  for (i = 1; i <= 16; i++)
+    start[i + 1] = start[i] + (count[i] << (16 - i));
+  if (start[17] != (UInt32) (1 << 16))
+    throw "Data error";
+  
+  jutbits = 16 - tablebits;
+  for (i = 1; (int)i <= tablebits; i++)
+  {
+    start[i] >>= jutbits;
+    weight[i] = 1 << (tablebits - i);
+  }
+  while (i <= 16)
+  {
+    weight[i] = 1 << (16 - i);
+    i++;
+  }
+  
+  i = start[tablebits + 1] >> jutbits;
+  if (i != (UInt32) (1 << 16))
+  {
+    k = 1 << tablebits;
+    while (i != k)
+      table[i++] = 0;
+  }
+  
+  avail = nchar;
+  mask = 1 << (15 - tablebits);
+  for (ch = 0; (int)ch < nchar; ch++)
+  {
+    if ((len = bitlen[ch]) == 0)
+      continue;
+    k = start[len];
+    nextcode = k + weight[len];
+    if ((int)len <= tablebits)
+    {
+      if (nextcode > (UInt32)tablesize)
+        throw "Data error";
+      for (i = start[len]; i < nextcode; i++)
+        table[i] = ch;
+    }
+    else
+    {
+      p = &table[k >> jutbits];
+      i = len - tablebits;
+      while (i != 0)
+      {
+        if (*p == 0)
+        {
+          right[avail] = left[avail] = 0;
+          *p = avail++;
+        }
+        if (k & mask)
+          p = &right[*p];
+        else
+          p = &left[*p];
+        k <<= 1;
+        i--;
+      }
+      *p = ch;
+    }
+    start[len] = nextcode;
+  }
+}
+
+void CCoder::read_pt_len(int nn, int nbit, int i_special)
+{
+  UInt32 n = m_InBitStream.ReadBits(nbit);
+  if (n == 0)
+  {
+    UInt32 c = m_InBitStream.ReadBits(nbit);
+    int i;
+    for (i = 0; i < nn; i++)
+      pt_len[i] = 0;
+    for (i = 0; i < 256; i++)
+      pt_table[i] = c;
+  }
+  else
+  {
+    UInt32 i = 0;
+    while (i < n)
+    {
+      UInt32 bitBuf = m_InBitStream.GetValue(16);
+      int c = bitBuf >> 13;
+      if (c == 7)
+      {
+        UInt32 mask = 1 << (12);
+        while (mask & bitBuf)
+        {
+          mask >>= 1;
+          c++;
+        }
+      }
+      m_InBitStream.MovePos((c < 7) ? 3 : (int)(c - 3));
+      pt_len[i++] = (Byte)c;
+      if (i == (UInt32)i_special)
+      {
+        c = m_InBitStream.ReadBits(2);
+        while (--c >= 0)
+          pt_len[i++] = 0;
+      }
+    }
+    while (i < (UInt32)nn)
+      pt_len[i++] = 0;
+    MakeTable(nn, pt_len, 8, pt_table, PTABLESIZE);
+  }
+}
+
+void CCoder::read_c_len()
+{
+  int i, c, n;
+  UInt32 mask;
+  
+  n = m_InBitStream.ReadBits(CBIT);
+  if (n == 0)
+  {
+    c = m_InBitStream.ReadBits(CBIT);
+    for (i = 0; i < NC; i++)
+      c_len[i] = 0;
+    for (i = 0; i < CTABLESIZE; i++)
+      c_table[i] = c;
+  }
+  else
+  {
+    i = 0;
+    while (i < n)
+    {
+      UInt32 bitBuf = m_InBitStream.GetValue(16);
+      c = pt_table[bitBuf >> (8)];
+      if (c >= NT)
+      {
+        mask = 1 << (7);
+        do
+        {
+          if (bitBuf & mask)
+            c = right[c];
+          else
+            c = left[c];
+          mask >>= 1;
+        } while (c >= NT);
+      }
+      m_InBitStream.MovePos((int)(pt_len[c]));
+      if (c <= 2)
+      {
+        if (c == 0)
+          c = 1;
+        else if (c == 1)
+          c = m_InBitStream.ReadBits(4) + 3;
+        else
+          c = m_InBitStream.ReadBits(CBIT) + 20;
+        while (--c >= 0)
+          c_len[i++] = 0;
+      }
+      else
+        c_len[i++] = (Byte)(c - 2);
+    }
+    while (i < NC)
+      c_len[i++] = 0;
+    MakeTable(NC, c_len, 12, c_table, CTABLESIZE);
+  }
+}
+
+UInt32 CCoder::decode_c()
+{
+  UInt32 j, mask;
+  UInt32 bitbuf = m_InBitStream.GetValue(16);
+  j = c_table[bitbuf >> 4];
+  if (j >= NC)
+  {
+    mask = 1 << (3);
+    do
+    {
+      if (bitbuf & mask)
+        j = right[j];
+      else
+        j = left[j];
+      mask >>= 1;
+    } while (j >= NC);
+  }
+  m_InBitStream.MovePos((int)(c_len[j]));
+  return j;
+}
+
+UInt32 CCoder::decode_p()
+{
+  UInt32 j, mask;
+  UInt32 bitbuf = m_InBitStream.GetValue(16);
+  j = pt_table[bitbuf >> (8)];
+  if (j >= NP)
+  {
+    mask = 1 << (7);
+    do
+    {
+      if (bitbuf & mask)
+        j = right[j];
+      else
+        j = left[j];
+      mask >>= 1;
+    } while (j >= NP);
+  }
+  m_InBitStream.MovePos((int)(pt_len[j]));
+  if (j != 0)
+  {
+    j--;
+    j = (1 << j) + m_InBitStream.ReadBits((int)j);
+  }
+  return j;
+}
+
+
+STDMETHODIMP CCoder::CodeReal(ISequentialInStream *inStream,
+    ISequentialOutStream *outStream, const UInt64 * /* inSize */, const UInt64 *outSize,
+    ICompressProgressInfo *progress)
+{
+  if (outSize == NULL)
+    return E_INVALIDARG;
+
+  if (!m_OutWindowStream.Create(kHistorySize))
+    return E_OUTOFMEMORY;
+  if (!m_InBitStream.Create(1 << 20))
+    return E_OUTOFMEMORY;
+
+  int size1 = sizeof(c_table) / sizeof(c_table[0]);
+  for (int i = 0; i < size1; i++)
+  {
+    if (i % 100 == 0)
+      c_table[i] = 0;
+
+    c_table[i] = 0;
+  }
+
+
+  UInt64 pos = 0;
+  m_OutWindowStream.SetStream(outStream);
+  m_OutWindowStream.Init(false);
+  m_InBitStream.SetStream(inStream);
+  m_InBitStream.Init();
+  
+  CCoderReleaser coderReleaser(this);
+
+  UInt32 blockSize = 0;
+
+  while(pos < *outSize)
+  {
+    if (blockSize == 0)
+    {
+      if (progress != NULL)
+      {
+        UInt64 packSize = m_InBitStream.GetProcessedSize();
+        RINOK(progress->SetRatioInfo(&packSize, &pos));
+      }
+      blockSize = m_InBitStream.ReadBits(16);
+      read_pt_len(NT, TBIT, 3);
+      read_c_len();
+      read_pt_len(NP, PBIT, -1);
+    }
+    blockSize--;
+
+    UInt32 number = decode_c();
+    if (number < 256)
+    {
+      m_OutWindowStream.PutByte((Byte)number);
+      pos++;
+      continue;
+    }
+    else
+    {
+      UInt32 len = number - 256 + kMatchMinLen;
+      UInt32 distance = decode_p();
+      if (distance >= pos)
+        throw "data error";
+      m_OutWindowStream.CopyBlock(distance, len);
+        pos += len;
+    }
+  }
+  coderReleaser.NeedFlush = false;
+  return m_OutWindowStream.Flush();
+}
+
+STDMETHODIMP CCoder::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; }
+}
+
+}}}

CPP/7zip/Compress/Arj/ArjDecoder1.h

@@ -0,0 +1,105 @@
+// Arj/Decoder1.h
+
+#ifndef __COMPRESS_ARJ_DECODER1_H
+#define __COMPRESS_ARJ_DECODER1_H
+
+#include "../../../Common/MyCom.h"
+#include "../../ICoder.h"
+#include "../../Common/MSBFDecoder.h"
+#include "../../Common/InBuffer.h"
+#include "../LZ/LZOutWindow.h"
+
+/*
+// {23170F69-40C1-278B-0404-010000000000}
+DEFINE_GUID(CLSID_CCompressArjDecoder, 
+0x23170F69, 0x40C1, 0x278B, 0x04, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00);
+*/
+
+namespace NCompress {
+namespace NArj {
+namespace NDecoder1 {
+
+#define CODE_BIT          16
+
+#define THRESHOLD    3
+#define DDICSIZ      26624
+#define MAXDICBIT   16
+#define MATCHBIT     8
+#define MAXMATCH   256
+#define NC          (0xFF + MAXMATCH + 2 - THRESHOLD)
+#define NP          (MAXDICBIT + 1)
+#define CBIT         9
+#define NT          (CODE_BIT + 3)
+#define PBIT         5
+#define TBIT         5
+
+#if NT > NP
+#define NPT NT
+#else
+#define NPT NP
+#endif
+
+#define CTABLESIZE  4096
+#define PTABLESIZE   256
+
+
+class CCoder :
+  public ICompressCoder,
+  public CMyUnknownImp
+{
+  CLZOutWindow m_OutWindowStream;
+  NStream::NMSBF::CDecoder<CInBuffer> m_InBitStream;
+
+  UInt32 left[2 * NC - 1];
+  UInt32 right[2 * NC - 1];
+  Byte c_len[NC];
+  Byte pt_len[NPT];
+
+  UInt32 c_table[CTABLESIZE];
+  UInt32 pt_table[PTABLESIZE];
+  
+  void ReleaseStreams()
+  {
+    m_OutWindowStream.ReleaseStream();
+    m_InBitStream.ReleaseStream();
+  }
+
+  class CCoderReleaser
+  {
+    CCoder *m_Coder;
+  public:
+    bool NeedFlush;
+    CCoderReleaser(CCoder *coder): m_Coder(coder), NeedFlush(true) {}
+    ~CCoderReleaser()
+    {
+      if (NeedFlush)
+        m_Coder->m_OutWindowStream.Flush();
+      m_Coder->ReleaseStreams();
+    }
+  };
+  friend class CCoderReleaser;
+
+  void MakeTable(int nchar, Byte *bitlen, int tablebits, UInt32 *table, int tablesize);
+  
+  void read_c_len();
+  void read_pt_len(int nn, int nbit, int i_special);
+  UInt32 decode_c();
+  UInt32 decode_p();
+
+public:
+  
+  MY_UNKNOWN_IMP
+
+  STDMETHOD(CodeReal)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
+      ICompressProgressInfo *progress);
+
+  STDMETHOD(Code)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
+      ICompressProgressInfo *progress);
+
+};
+
+}}}
+
+#endif

CPP/7zip/Compress/Arj/ArjDecoder2.cpp

@@ -0,0 +1,93 @@
+// Arj/Decoder2.cpp
+
+#include "StdAfx.h"
+
+#include "ArjDecoder2.h"
+
+namespace NCompress{
+namespace NArj {
+namespace NDecoder2 {
+
+static const UInt32 kHistorySize = 26624;
+static const UInt32 kMatchMaxLen = 256;
+static const UInt32 kMatchMinLen = 3;
+
+STDMETHODIMP CCoder::CodeReal(ISequentialInStream *inStream,
+    ISequentialOutStream *outStream, const UInt64 * /* inSize */, const UInt64 *outSize,
+    ICompressProgressInfo * /* progress */)
+{
+  if (outSize == NULL)
+    return E_INVALIDARG;
+
+  if (!m_OutWindowStream.Create(kHistorySize))
+    return E_OUTOFMEMORY; 
+  if (!m_InBitStream.Create(1 << 20))
+    return E_OUTOFMEMORY;
+
+  UInt64 pos = 0;
+  m_OutWindowStream.SetStream(outStream);
+  m_OutWindowStream.Init(false);
+  m_InBitStream.SetStream(inStream);
+  m_InBitStream.Init();
+  CCoderReleaser coderReleaser(this);
+
+  while(pos < *outSize)
+  {
+    const UInt32 kStartWidth = 0;
+    const UInt32 kStopWidth = 7;
+    UInt32 power = 1 << kStartWidth;
+    UInt32 width;
+    UInt32 len = 0;
+    for (width = kStartWidth; width < kStopWidth; width++)
+    {
+      if (m_InBitStream.ReadBits(1) == 0)
+        break;
+      len += power;
+      power <<= 1;
+    }
+    if (width != 0)
+      len += m_InBitStream.ReadBits(width);
+    if (len == 0)
+    {
+      m_OutWindowStream.PutByte((Byte)m_InBitStream.ReadBits(8));
+      pos++;
+      continue;
+    }
+    else
+    {
+      len = len - 1 + kMatchMinLen;
+      const UInt32 kStartWidth = 9;
+      const UInt32 kStopWidth = 13;
+      UInt32 power = 1 << kStartWidth;
+      UInt32 width;
+      UInt32 distance = 0;
+      for (width = kStartWidth; width < kStopWidth; width++)
+      {
+        if (m_InBitStream.ReadBits(1) == 0)
+          break;
+        distance += power;
+        power <<= 1;
+      }
+      if (width != 0)
+        distance += m_InBitStream.ReadBits(width);
+      if (distance >= pos)
+        throw "data error";
+      m_OutWindowStream.CopyBlock(distance, len);
+        pos += len;
+    }
+  }
+  coderReleaser.NeedFlush = false;
+  return m_OutWindowStream.Flush();
+}
+
+STDMETHODIMP CCoder::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; }
+}
+
+}}}

CPP/7zip/Compress/Arj/ArjDecoder2.h

@@ -0,0 +1,65 @@
+// Arj/Decoder2.h
+
+#ifndef __COMPRESS_ARJ_DECODER2_H
+#define __COMPRESS_ARJ_DECODER2_H
+
+#include "../../../Common/MyCom.h"
+#include "../../ICoder.h"
+#include "../../Common/MSBFDecoder.h"
+#include "../../Common/InBuffer.h"
+#include "../LZ/LZOutWindow.h"
+
+/*
+// {23170F69-40C1-278B-0404-020000000000}
+DEFINE_GUID(CLSID_CCompressArj2Decoder, 
+0x23170F69, 0x40C1, 0x278B, 0x04, 0x04, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00);
+*/
+
+namespace NCompress {
+namespace NArj {
+namespace NDecoder2 {
+
+class CCoder :
+  public ICompressCoder,
+  public CMyUnknownImp
+{
+  CLZOutWindow m_OutWindowStream;
+  NStream::NMSBF::CDecoder<CInBuffer> m_InBitStream;
+  
+  void ReleaseStreams()
+  {
+    m_OutWindowStream.ReleaseStream();
+    m_InBitStream.ReleaseStream();
+  }
+
+  class CCoderReleaser
+  {
+    CCoder *m_Coder;
+  public:
+    bool NeedFlush;
+    CCoderReleaser(CCoder *coder): m_Coder(coder), NeedFlush(true) {}
+    ~CCoderReleaser()
+    {
+      if (NeedFlush)
+        m_Coder->m_OutWindowStream.Flush();
+      m_Coder->ReleaseStreams();
+    }
+  };
+  friend class CCoderReleaser;
+
+public:
+  MY_UNKNOWN_IMP
+
+  STDMETHOD(CodeReal)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
+      ICompressProgressInfo *progress);
+
+  STDMETHOD(Code)(ISequentialInStream *inStream,
+      ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
+      ICompressProgressInfo *progress);
+
+};
+
+}}}
+
+#endif

CPP/7zip/Compress/Arj/StdAfx.h

@@ -0,0 +1,8 @@
+// StdAfx.h
+
+#ifndef __STDAFX_H
+#define __STDAFX_H
+
+#include "../../../Common/MyWindows.h"
+
+#endif