C++ CMyComPtr::Write方法代码示例

void encode(NCompress::NLzma::CEncoder *encoderSpec,
		CMyComPtr<ISequentialInStream> inStream,
		CMyComPtr<ISequentialOutStream> outStream,
		lzma_option encoder_options,
		UInt64 fileSize)
{
	set_encoder_properties(encoderSpec, encoder_options);

	encoderSpec->WriteCoderProperties(outStream);

	for (int i = 0; i < 8; i++)
	{
		Byte b = Byte(fileSize >> (8 * i));
		if (outStream->Write(&b, sizeof(b), 0) != S_OK)
			throw Exception("Write error while encoding");
	}

	HRESULT result = encoderSpec->Code(inStream, outStream, 0, 0, 0);

	if (result == E_OUTOFMEMORY)
		throw Exception("Cannot allocate memory");
	else if (result != S_OK) {
		char buffer[33];
		snprintf(buffer, 33, "%d", (unsigned int)result);
		throw Exception(string("Encoder error: ") + buffer);
	}
}

STDMETHODIMP COutVolumeStream::Write(const void *data, UInt32 size, UInt32 *processedSize)
{
  if(processedSize != NULL)
    *processedSize = 0;
  while(size > 0)
  {
    if (!_volumeStream)
    {
      RINOK(VolumeCallback->GetVolumeSize(_volIndex, &_volSize));
      RINOK(VolumeCallback->GetVolumeStream(_volIndex, &_volumeStream));
      _volIndex++;
      _curPos = 0;
      RINOK(_archive.Create(_volumeStream, true));
      RINOK(_archive.SkeepPrefixArchiveHeader());
      _crc.Init();
      continue;
    }
    UInt64 pureSize = COutArchive::GetVolPureSize(_volSize, _file.Name.Length());
    UInt32 curSize = (UInt32)MyMin(UInt64(size), pureSize - _curPos);

    _crc.Update(data, curSize);
    UInt32 realProcessed;
    RINOK(_volumeStream->Write(data, curSize, &realProcessed))
    data = (void *)((Byte *)data + realProcessed);
    size -= realProcessed;
    if(processedSize != NULL)
      *processedSize += realProcessed;
    _curPos += realProcessed;
    if (realProcessed != curSize && realProcessed == 0)
      return E_FAIL;
    if (_curPos == pureSize)
    {
      RINOK(Flush());
    }
  }
  return S_OK;
}

STDMETHODIMP CFolderOutStream2::Write(const void *data, UInt32 size, UInt32 *processedSize)
{
  if (processedSize != NULL)
    *processedSize = 0;
  while (size != 0)
  {
    if (_fileIsOpen)
    {
      UInt32 cur = size < _rem ? size : (UInt32)_rem;
      RINOK(_crcStream->Write(data, cur, &cur));
      if (cur == 0)
        break;
      data = (const Byte *)data + cur;
      size -= cur;
      _rem -= cur;
      if (processedSize != NULL)
        *processedSize += cur;
      if (_rem == 0)
      {
        RINOK(CloseFileAndSetResult());
        RINOK(ProcessEmptyFiles());
        continue;
      }
    }
    else
    {
      RINOK(ProcessEmptyFiles());
      if (_currentIndex == _extractStatuses->Size())
      {
        // we don't support partial extracting
        return E_FAIL;
      }
      OpenFile();
    }
  }
  return S_OK;
}

int main2(int n, const char *args[])
{
  #ifdef _WIN32
  g_IsNT = IsItWindowsNT();
  #endif

  fprintf(stderr, "\nLZMA " MY_VERSION_COPYRIGHT_DATE "\n");

  if (n == 1)
  {
	PrintHelp();
	return 0;
  }

  bool unsupportedTypes = (sizeof(Byte) != 1 || sizeof(UInt32) < 4 || sizeof(UInt64) < 4);
  if (unsupportedTypes)
  {
	fprintf(stderr, "Unsupported base types. Edit Common/Types.h and recompile");
	return 1;
  }   

  UStringVector commandStrings;
  WriteArgumentsToStringList(n, args, commandStrings);
  CParser parser(kNumSwitches);
  try
  {
	parser.ParseStrings(kSwitchForms, commandStrings);
  }
  catch(...) 
  {
	IncorrectCommand();
  }

  if(parser[NKey::kHelp1].ThereIs || parser[NKey::kHelp2].ThereIs)
  {
	PrintHelp();
	return 0;
  }
  const UStringVector &nonSwitchStrings = parser.NonSwitchStrings;

  int paramIndex = 0;
  if (paramIndex >= nonSwitchStrings.Size())
	IncorrectCommand();
  const UString &command = nonSwitchStrings[paramIndex++]; 

  bool dictionaryIsDefined = false;
  UInt32 dictionary = (UInt32)-1;
  if(parser[NKey::kDictionary].ThereIs)
  {
	UInt32 dicLog;
	if (!GetNumber(parser[NKey::kDictionary].PostStrings[0], dicLog))
	  IncorrectCommand();
	dictionary = 1 << dicLog;
	dictionaryIsDefined = true;
  }
  UString mf = L"BT4";
  if (parser[NKey::kMatchFinder].ThereIs)
	mf = parser[NKey::kMatchFinder].PostStrings[0];

  UInt32 numThreads = (UInt32)-1;

  #ifdef COMPRESS_MF_MT
  if (parser[NKey::kMultiThread].ThereIs)
  {
	UInt32 numCPUs = NWindows::NSystem::GetNumberOfProcessors();
	const UString &s = parser[NKey::kMultiThread].PostStrings[0];
	if (s.IsEmpty())
	  numThreads = numCPUs;
	else
	  if (!GetNumber(s, numThreads))
		IncorrectCommand();
  }
  #endif

  if (command.CompareNoCase(L"b") == 0)
  {
	const UInt32 kNumDefaultItereations = 1;
	UInt32 numIterations = kNumDefaultItereations;
	{
	  if (paramIndex < nonSwitchStrings.Size())
		if (!GetNumber(nonSwitchStrings[paramIndex++], numIterations))
		  numIterations = kNumDefaultItereations;
	}
	return LzmaBenchCon(stderr, numIterations, numThreads, dictionary);
  }

  if (numThreads == (UInt32)-1)
	numThreads = 1;

  bool encodeMode = false;
  if (command.CompareNoCase(L"e") == 0)
	encodeMode = true;
  else if (command.CompareNoCase(L"d") == 0)
	encodeMode = false;
  else
	IncorrectCommand();

  bool stdInMode = parser[NKey::kStdIn].ThereIs;
  bool stdOutMode = parser[NKey::kStdOut].ThereIs;

//.........这里部分代码省略.........

unsigned char *LZMAEncodeData ( unsigned char *fromData, long fromSize, long &toSize, CProgressInfo7Zip *progress )
{
	bool eos = false;

	CMyComPtr<ISequentialInStream> inStream;
	CInDataStream *inStreamSpec = new CInDataStream;
	inStream = inStreamSpec;
	inStreamSpec->LoadData ( fromData, fromSize );

	CMyComPtr<ISequentialOutStream> outStream;
	COutDataStream *outStreamSpec = new COutDataStream;
	outStream = outStreamSpec;
	outStreamSpec->Create ( toSize );

    NCompress::NLZMA::CEncoder *encoderSpec = new NCompress::NLZMA::CEncoder;
    CMyComPtr<ICompressCoder> encoder = encoderSpec;

	UInt32 dictionary = 1 << 21;
    UInt32 posStateBits = 2;
    UInt32 litContextBits = 3; // for normal files
    // UInt32 litContextBits = 0; // for 32-bit data
    UInt32 litPosBits = 0;
    // UInt32 litPosBits = 2; // for 32-bit data
    UInt32 algorithm = 2;
    UInt32 numFastBytes = 128;
    UInt32 matchFinderCycles = 16 + numFastBytes / 2;
    bool matchFinderCyclesDefined = false;

    //bool eos = parser[NKey::kEOS].ThereIs || stdInMode;
 
    PROPID propIDs[] = 
    {
      NCoderPropID::kDictionarySize,
      NCoderPropID::kPosStateBits,
      NCoderPropID::kLitContextBits,
      NCoderPropID::kLitPosBits,
      NCoderPropID::kAlgorithm,
      NCoderPropID::kNumFastBytes,
      NCoderPropID::kMatchFinder,
      NCoderPropID::kEndMarker,
      NCoderPropID::kMatchFinderCycles
    };
    const int kNumPropsMax = sizeof(propIDs) / sizeof(propIDs[0]);

	UString mf = L"BT4";

    PROPVARIANT properties[kNumPropsMax];
    for (int p = 0; p < 6; p++)
      properties[p].vt = VT_UI4;

    properties[0].ulVal = UInt32(dictionary);
    properties[1].ulVal = UInt32(posStateBits);
    properties[2].ulVal = UInt32(litContextBits);
    properties[3].ulVal = UInt32(litPosBits);
    properties[4].ulVal = UInt32(algorithm);
    properties[5].ulVal = UInt32(numFastBytes);

    properties[8].vt = VT_UI4;
    properties[8].ulVal = UInt32(matchFinderCycles);
    
    properties[6].vt = VT_BSTR;
    properties[6].bstrVal = (BSTR)(const wchar_t *)mf;

    properties[7].vt = VT_BOOL;
    properties[7].boolVal = eos ? VARIANT_TRUE : VARIANT_FALSE;

    int numProps = kNumPropsMax;
    if (!matchFinderCyclesDefined)
      numProps--;

    if ( encoderSpec->SetCoderProperties(propIDs, properties, numProps) != S_OK )
		return NULL;
    encoderSpec->WriteCoderProperties(outStream);

	UInt64 fileSize = 0;
	inStreamSpec->GetSize ( &fileSize );

    for (int i = 0; i < 8; i++)
    {
      Byte b = Byte(fileSize >> (8 * i));
      if (outStream->Write(&b, 1, 0) != S_OK)
		  return NULL;
    }

//	CProgressInfo *progressInfoSpec = new CProgressInfo;
	//CMyComPtr<ICompressProgressInfo> progressInfo = progress;

	if ( progress )
	{
		progress->ApprovedStart = 1 << 21;
		progress->SetMax ( fileSize );
		progress->SetIn ( true );
	}

    HRESULT result = encoder->Code(inStream, outStream, 0, 0, progress );

//	delete progressInfo;
    if (result == E_OUTOFMEMORY)
		return NULL;

//.........这里部分代码省略.........

// This is Write function
HRESULT CFolderOutStream::Write2(const void *data, UInt32 size, UInt32 *processedSize, bool isOK)
{
  COM_TRY_BEGIN
  UInt32 realProcessed = 0;
  if (processedSize != NULL)
   *processedSize = 0;
  while (size != 0)
  {
    if (m_FileIsOpen)
    {
      UInt32 numBytesToWrite = MyMin(m_RemainFileSize, size);
      HRESULT res = S_OK;
      if (numBytesToWrite > 0)
      {
        if (!isOK)
          m_IsOk = false;
        if (m_RealOutStream)
        {
          UInt32 processedSizeLocal = 0;
          res = m_RealOutStream->Write((const Byte *)data, numBytesToWrite, &processedSizeLocal);
          numBytesToWrite = processedSizeLocal;
        }
        if (TempBufMode && TempBuf)
          memcpy(TempBuf + (m_PosInFolder - m_BufStartFolderOffset), data, numBytesToWrite);
      }
      realProcessed += numBytesToWrite;
      if (processedSize != NULL)
        *processedSize = realProcessed;
      data = (const void *)((const Byte *)data + numBytesToWrite);
      size -= numBytesToWrite;
      m_RemainFileSize -= numBytesToWrite;
      m_PosInFolder += numBytesToWrite;
      if (res != S_OK)
        return res;
      if (m_RemainFileSize == 0)
      {
        RINOK(CloseFile());

        while (NumIdenticalFiles)
        {
          HRESULT result = OpenFile();
          m_FileIsOpen = true;
          m_CurrentIndex++;
          if (result == S_OK && m_RealOutStream && TempBuf)
            result = WriteStream(m_RealOutStream, TempBuf, (size_t)(m_PosInFolder - m_BufStartFolderOffset));
          
          if (!TempBuf && TempBufMode && m_RealOutStream)
          {
            RINOK(CloseFileWithResOp(NExtract::NOperationResult::kUnSupportedMethod));
          }
          else
          {
            RINOK(CloseFile());
          }
          RINOK(result);
        }
        TempBufMode = false;
      }
      if (realProcessed > 0)
        break; // with this break this function works as Write-Part
    }
    else
    {
      if (m_CurrentIndex >= m_ExtractStatuses->Size())
        return E_FAIL;

      const CMvItem &mvItem = m_Database->Items[m_StartIndex + m_CurrentIndex];
      const CItem &item = m_Database->Volumes[mvItem.VolumeIndex].Items[mvItem.ItemIndex];

      m_RemainFileSize = item.Size;

      UInt32 fileOffset = item.Offset;
      if (fileOffset < m_PosInFolder)
        return E_FAIL;
      if (fileOffset > m_PosInFolder)
      {
        UInt32 numBytesToWrite = MyMin(fileOffset - (UInt32)m_PosInFolder, size);
        realProcessed += numBytesToWrite;
        if (processedSize != NULL)
          *processedSize = realProcessed;
        data = (const void *)((const Byte *)data + numBytesToWrite);
        size -= numBytesToWrite;
        m_PosInFolder += numBytesToWrite;
      }
      if (fileOffset == m_PosInFolder)
      {
        RINOK(OpenFile());
        m_FileIsOpen = true;
        m_CurrentIndex++;
        m_IsOk = true;
      }
    }
  }
  return WriteEmptyFiles();
  COM_TRY_END
}

int main2(int numArgs, const char *args[])
{
  NT_CHECK

  PrintMessage("\nLZMA " MY_VERSION_COPYRIGHT_DATE "\n");

  if (numArgs == 1)
  {
    PrintHelp();
    return 0;
  }

  bool unsupportedTypes = (sizeof(Byte) != 1 || sizeof(UInt32) < 4 || sizeof(UInt64) < 4);
  if (unsupportedTypes)
  {
    PrintMessage("Unsupported base types. Edit Common/Types.h and recompile");
    return 1;
  }

  UStringVector commandStrings;
  WriteArgumentsToStringList(numArgs, args, commandStrings);
  CParser parser(kNumSwitches);
  try
  {
    parser.ParseStrings(kSwitchForms, commandStrings);
  }
  catch(...)
  {
    IncorrectCommand();
  }

  if (parser[NKey::kHelp1].ThereIs || parser[NKey::kHelp2].ThereIs)
  {
    PrintHelp();
    return 0;
  }
  const UStringVector &nonSwitchStrings = parser.NonSwitchStrings;

  int paramIndex = 0;
  if (paramIndex >= nonSwitchStrings.Size())
    IncorrectCommand();
  const UString &command = nonSwitchStrings[paramIndex++];

  CObjectVector<CProperty> props;
  bool dictDefined = false;
  UInt32 dict = (UInt32)(Int32)-1;
  if (parser[NKey::kDict].ThereIs)
  {
    UInt32 dicLog;
    const UString &s = parser[NKey::kDict].PostStrings[0];
    if (!GetNumber(s, dicLog))
      IncorrectCommand();
    dict = 1 << dicLog;
    dictDefined = true;
    CProperty prop;
    prop.Name = L"d";
    prop.Value = s;
    props.Add(prop);
  }
  if (parser[NKey::kLevel].ThereIs)
  {
    UInt32 level = 5;
    const UString &s = parser[NKey::kLevel].PostStrings[0];
    if (!GetNumber(s, level))
      IncorrectCommand();
    CProperty prop;
    prop.Name = L"x";
    prop.Value = s;
    props.Add(prop);
  }
  UString mf = L"BT4";
  if (parser[NKey::kMatchFinder].ThereIs)
    mf = parser[NKey::kMatchFinder].PostStrings[0];

  UInt32 numThreads = (UInt32)(Int32)-1;

  #ifndef _7ZIP_ST
  if (parser[NKey::kMultiThread].ThereIs)
  {
    UInt32 numCPUs = NWindows::NSystem::GetNumberOfProcessors();
    const UString &s = parser[NKey::kMultiThread].PostStrings[0];
    if (s.IsEmpty())
      numThreads = numCPUs;
    else
      if (!GetNumber(s, numThreads))
        IncorrectCommand();
    CProperty prop;
    prop.Name = L"mt";
    prop.Value = s;
    props.Add(prop);
  }
  #endif

  if (parser[NKey::kMethod].ThereIs)
  {
    UString s = parser[NKey::kMethod].PostStrings[0];
    if (s.IsEmpty() || s[0] != '=')
      IncorrectCommand();
    CProperty prop;
    prop.Name = L"m";
//.........这里部分代码省略.........

// This is WritePart function
HRESULT CChmFolderOutStream::Write2(const void *data, UInt32 size, UInt32 *processedSize, bool isOK)
{
  UInt32 realProcessed = 0;
  if (processedSize != NULL)
   *processedSize = 0;
  while(size != 0)
  {
    if (m_FileIsOpen)
    {
      UInt32 numBytesToWrite = (UInt32)MyMin(m_RemainFileSize, (UInt64)(size));
      HRESULT res = S_OK;
      if (numBytesToWrite > 0)
      {
        if (!isOK)
          m_IsOk = false;
        if (m_RealOutStream)
        {
          UInt32 processedSizeLocal = 0;
          res = m_RealOutStream->Write((const Byte *)data, numBytesToWrite, &processedSizeLocal);
          numBytesToWrite = processedSizeLocal;
        }
      }
      realProcessed += numBytesToWrite;
      if (processedSize != NULL)
        *processedSize = realProcessed;
      data = (const void *)((const Byte *)data + numBytesToWrite);
      size -= numBytesToWrite;
      m_RemainFileSize -= numBytesToWrite;
      m_PosInSection += numBytesToWrite;
      m_PosInFolder += numBytesToWrite;
      if (res != S_OK)
        return res;
      if (m_RemainFileSize == 0)
      {
        m_RealOutStream.Release();
        RINOK(m_ExtractCallback->SetOperationResult(
          m_IsOk ?
            NExtract::NOperationResult::kOK:
            NExtract::NOperationResult::kDataError));
        m_FileIsOpen = false;
      }
      if (realProcessed > 0)
        break; // with this break this function works as write part
    }
    else
    {
      if (m_CurrentIndex >= m_NumFiles)
        return E_FAIL;
      int fullIndex = m_StartIndex + m_CurrentIndex;
      m_RemainFileSize = m_Database->GetFileSize(fullIndex);
      UInt64 fileOffset = m_Database->GetFileOffset(fullIndex);
      if (fileOffset < m_PosInSection)
        return E_FAIL;
      if (fileOffset > m_PosInSection)
      {
        UInt32 numBytesToWrite = (UInt32)MyMin(fileOffset - m_PosInSection, UInt64(size));
        realProcessed += numBytesToWrite;
        if (processedSize != NULL)
          *processedSize = realProcessed;
        data = (const void *)((const Byte *)data + numBytesToWrite);
        size -= numBytesToWrite;
        m_PosInSection += numBytesToWrite;
        m_PosInFolder += numBytesToWrite;
      }
      if (fileOffset == m_PosInSection)
      {
        RINOK(OpenFile());
        m_FileIsOpen = true;
        m_CurrentIndex++;
        m_IsOk = true;
      }
    }
  }
  return WriteEmptyFiles();
}

int main2(int n, const char *args[])
{
  fprintf(stderr, "\nLZMA 4.27 Copyright (c) 1999-2005 Igor Pavlov  2005-08-07\n");

  if (n == 1)
  {
    PrintHelp();
    return 0;
  }

  if (sizeof(Byte) != 1 || sizeof(UInt32) < 4 || sizeof(UInt64) < 4)
  {
    fprintf(stderr, "Unsupported base types. Edit Common/Types.h and recompile");
    return 1;
  }   

  UStringVector commandStrings;
  WriteArgumentsToStringList(n, args, commandStrings);
  CParser parser(kNumSwitches);
  try
  {
    parser.ParseStrings(kSwitchForms, commandStrings);
  }
  catch(...) 
  {
    IncorrectCommand();
  }

  if(parser[NKey::kHelp1].ThereIs || parser[NKey::kHelp2].ThereIs)
  {
    PrintHelp();
    return 0;
  }
  const UStringVector &nonSwitchStrings = parser.NonSwitchStrings;

  int paramIndex = 0;
  if (paramIndex >= nonSwitchStrings.Size())
    IncorrectCommand();
  const UString &command = nonSwitchStrings[paramIndex++]; 

  bool dictionaryIsDefined = false;
  UInt32 dictionary = 1 << 21;
  if(parser[NKey::kDictionary].ThereIs)
  {
    UInt32 dicLog;
    if (!GetNumber(parser[NKey::kDictionary].PostStrings[0], dicLog))
      IncorrectCommand();
    dictionary = 1 << dicLog;
    dictionaryIsDefined = true;
  }
  UString mf = L"BT4";
  if (parser[NKey::kMatchFinder].ThereIs)
    mf = parser[NKey::kMatchFinder].PostStrings[0];

  if (command.CompareNoCase(L"b") == 0)
  {
    const UInt32 kNumDefaultItereations = 10;
    UInt32 numIterations = kNumDefaultItereations;
    {
      if (paramIndex < nonSwitchStrings.Size())
        if (!GetNumber(nonSwitchStrings[paramIndex++], numIterations))
          numIterations = kNumDefaultItereations;
    }
    return LzmaBenchmark(stderr, numIterations, dictionary, 
        mf.CompareNoCase(L"BT4") == 0);
  }

  bool encodeMode = false;
  if (command.CompareNoCase(L"e") == 0)
    encodeMode = true;
  else if (command.CompareNoCase(L"d") == 0)
    encodeMode = false;
  else
    IncorrectCommand();

  bool stdInMode = parser[NKey::kStdIn].ThereIs;
  bool stdOutMode = parser[NKey::kStdOut].ThereIs;

  CMyComPtr<ISequentialInStream> inStream;
  CInFileStream *inStreamSpec = 0;
  if (stdInMode)
  {
    inStream = new CStdInFileStream;
    MY_SET_BINARY_MODE(stdin);
  }
  else
  {
    if (paramIndex >= nonSwitchStrings.Size())
      IncorrectCommand();
    const UString &inputName = nonSwitchStrings[paramIndex++]; 
    inStreamSpec = new CInFileStream;
    inStream = inStreamSpec;
    if (!inStreamSpec->Open(GetSystemString(inputName)))
    {
      fprintf(stderr, "\nError: can not open input file %s\n", 
          (const char *)GetOemString(inputName));
      return 1;
    }
  }

//.........这里部分代码省略.........

int main2(int n, const char *args[])
{
	if (strcmp(args[n - 1], "-notitle") == 0)
		n--; 
	else {
		fprintf(stderr,
			"\nt5lzma 1.00 Copyright (C) 2004 H.Kawai\n"
			" --- based : LZMA 4.03 Copyright (c) 1999-2004 Igor Pavlov  2004-06-18\n"
		);
	}

  if (n == 1)
  {
    PrintHelp();
    return 0;
  }

  if (sizeof(Byte) != 1 || sizeof(UInt32) < 4 || sizeof(UInt64) < 4)
  {
    fprintf(stderr, "Unsupported base types. Edit Common/Types.h and recompile");
    return 1;
  }   

  UStringVector commandStrings;
  WriteArgumentsToStringList(n, args, commandStrings);
  CParser parser(kNumSwitches);
  try
  {
    parser.ParseStrings(kSwitchForms, commandStrings);
  }
  catch(...) 
  {
    IncorrectCommand();
  }

  if(parser[NKey::kHelp1].ThereIs || parser[NKey::kHelp2].ThereIs)
  {
    PrintHelp();
    return 0;
  }
  const UStringVector &nonSwitchStrings = parser.NonSwitchStrings;

  int paramIndex = 0;
  if (paramIndex >= nonSwitchStrings.Size())
    IncorrectCommand();
  const UString &command = nonSwitchStrings[paramIndex++]; 

  if (command.CompareNoCase(L"b") == 0)
  {
    UInt32 dictionary = 1 << 21;
    if(parser[NKey::kDictionary].ThereIs)
    {
      UInt32 dicLog;
      if (!GetNumber(parser[NKey::kDictionary].PostStrings[0], dicLog))
        IncorrectCommand();
      dictionary = 1 << dicLog;
    }
    const UInt32 kNumDefaultItereations = 10;
    UInt32 numIterations = kNumDefaultItereations;
    {
      if (paramIndex < nonSwitchStrings.Size())
        if (!GetNumber(nonSwitchStrings[paramIndex++], numIterations))
          numIterations = kNumDefaultItereations;
    }
    return LzmaBenchmark(numIterations, dictionary);
  }

  bool encodeMode;
  if (command.CompareNoCase(L"e") == 0)
    encodeMode = true;
  else if (command.CompareNoCase(L"d") == 0)
    encodeMode = false;
  else
    IncorrectCommand();

  bool stdInMode = parser[NKey::kStdIn].ThereIs;
  bool stdOutMode = parser[NKey::kStdOut].ThereIs;

  CMyComPtr<ISequentialInStream> inStream;
  CInFileStream *inStreamSpec = 0;
  if (stdInMode)
  {
    inStream = new CStdInFileStream;
    MY_SET_BINARY_MODE(stdin);
  }
  else
  {
    if (paramIndex >= nonSwitchStrings.Size())
      IncorrectCommand();
    const UString &inputName = nonSwitchStrings[paramIndex++]; 
    inStreamSpec = new CInFileStream;
    inStream = inStreamSpec;
    if (!inStreamSpec->Open(GetSystemString(inputName)))
    {
      fprintf(stderr, "\nError: can not open input file %s\n", 
          (const char *)GetOemString(inputName));
      return 1;
    }
  }

//.........这里部分代码省略.........

// This is Write function
HRESULT CCabFolderOutStream::Write2(const void *data, UInt32 size, UInt32 *processedSize, bool isOK)
{
  UInt32 realProcessed = 0;
  if (processedSize != NULL)
   *processedSize = 0;
  while(size != 0)
  {
    if (m_FileIsOpen)
    {
      UInt32 numBytesToWrite = (UInt32)MyMin(m_RemainFileSize, (UInt64)(size));
      HRESULT res = S_OK;
      if (numBytesToWrite > 0)
      {
        if (!isOK)
          m_IsOk = false;
        if (m_RealOutStream)
        {
          UInt32 processedSizeLocal = 0;
          res = m_RealOutStream->Write((const Byte *)data, numBytesToWrite, &processedSizeLocal);
          numBytesToWrite = processedSizeLocal;
        }
      }
      realProcessed += numBytesToWrite;
      if (processedSize != NULL)
        *processedSize = realProcessed;
      data = (const void *)((const Byte *)data + numBytesToWrite);
      size -= numBytesToWrite;
      m_RemainFileSize -= numBytesToWrite;
      m_PosInFolder += numBytesToWrite;
      if (res != S_OK)
        return res;
      if (m_RemainFileSize == 0)
      {
        m_RealOutStream.Release();
        RINOK(m_ExtractCallback->SetOperationResult(
          m_IsOk ?
            NArchive::NExtract::NOperationResult::kOK:
            NArchive::NExtract::NOperationResult::kDataError));
        m_FileIsOpen = false;
      }
      if (realProcessed > 0)
        break; // with this break this function works as Write-Part
    }
    else
    {
      if (m_CurrentIndex >= m_ExtractStatuses->Size())
        return E_FAIL;

      const CMvItem &mvItem = m_Database->Items[m_StartIndex + m_CurrentIndex];
      const CItem &item = m_Database->Volumes[mvItem.VolumeIndex].Items[mvItem.ItemIndex];

      m_RemainFileSize = item.Size;

      UInt32 fileOffset = item.Offset;
      if (fileOffset < m_PosInFolder)
        return E_FAIL;
      if (fileOffset > m_PosInFolder)
      {
        UInt32 numBytesToWrite = (UInt32)MyMin((UInt64)fileOffset - m_PosInFolder, UInt64(size));
        realProcessed += numBytesToWrite;
        if (processedSize != NULL)
          *processedSize = realProcessed;
        data = (const void *)((const Byte *)data + numBytesToWrite);
        size -= numBytesToWrite;
        m_PosInFolder += numBytesToWrite;
      }
      if (fileOffset == m_PosInFolder)
      {
        RINOK(OpenFile());
        m_FileIsOpen = true;
        m_CurrentIndex++;
        m_IsOk = true;
      }
    }
  }
  return WriteEmptyFiles();
}