C++ COutFileStream类代码示例

bool LZMADecodeFile ( const char *fromFile, const char *toFile, CProgressInfo7Zip *progress )
{
	CMyComPtr<ISequentialInStream> inStream;
	CInFileStream *inStreamSpec = new CInFileStream;
	inStream = inStreamSpec;

	if ( !inStreamSpec->Open ( GetSystemString(fromFile) ) )
		return false;

	CMyComPtr<ISequentialOutStream> outStream;
	COutFileStream *outStreamSpec = new COutFileStream;
	outStream = outStreamSpec;
	if ( !outStreamSpec->Create ( GetSystemString(toFile), true ) )
		return false;


	NCompress::NLZMA::CDecoder *decoderSpec = new NCompress::NLZMA::CDecoder;

	CMyComPtr<ICompressCoder> decoder = decoderSpec;

	const UInt32 kPropertiesSize = 5;
	Byte properties[kPropertiesSize];
	UInt32 processedSize;
	
	if ( ReadStream (inStream, properties, kPropertiesSize, &processedSize) != S_OK )
		return false;

	if ( processedSize != kPropertiesSize )
		return false;

	if ( decoderSpec->SetDecoderProperties2(properties, kPropertiesSize) != S_OK )
		return false;

	UInt64 fileSize = 0;
	for (int i = 0; i < 8; i++)
	{
	  Byte b;
	  if ( inStream->Read(&b, 1, &processedSize) != S_OK )
		  return false;

	  if ( processedSize != 1 )
		  return false;
	  fileSize |= ((UInt64)b) << (8 * i);
	}

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

	if ( decoder->Code(inStream, outStream, 0, &fileSize, progress) != S_OK )
		// decoder error
		return false;

	return true;
}

HRESULT CAgent::CommonUpdate(
    const wchar_t *newArchiveName,
    int numUpdateItems,
    IArchiveUpdateCallback *updateCallback)
{
  if (!CanUpdate())
    return E_NOTIMPL;
  CMyComPtr<IOutArchive> outArchive;
  RINOK(GetArchive()->QueryInterface(IID_IOutArchive, (void **)&outArchive));

  COutFileStream *outStreamSpec = new COutFileStream;
  CMyComPtr<IOutStream> outStream(outStreamSpec);

  UString archiveName = newArchiveName;
  {
    UString resultPath;
    int pos;
    if(!NFile::NDirectory::MyGetFullPathName(archiveName, resultPath, pos))
      throw 141716;
    NFile::NDirectory::CreateComplexDirectory(resultPath.Left(pos));
  }

  /*
  bool isOK = false;
  for (int i = 0; i < (1 << 16); i++)
  {
    resultName = newArchiveName;
    if (i > 0)
    {
      wchar_t s[32];
      ConvertUInt64ToString(i, s);
      resultName += s;
    }
    if (outStreamSpec->Open(realPath))
    {
      isOK = true;
      break;
    }
    if (::GetLastError() != ERROR_FILE_EXISTS)
      return ::GetLastError();
  }
  if (!isOK)
    return ::GetLastError();
  */
  if (!outStreamSpec->Create(archiveName, true))
  {
    // ShowLastErrorMessage();
    return E_FAIL;
  }
  
  RINOK(outArchive->UpdateItems(outStream, numUpdateItems, updateCallback));
  return outStreamSpec->Close();
}

int open_outstream(const string outfile,
		CMyComPtr<ISequentialOutStream> &outStream)
{
	COutFileStream *outStreamSpec = new COutFileStream;
	outStream = outStreamSpec;

	bool open_by_force = (program_mode == PM_TEST) | force;

	if (!outStreamSpec->Create(outfile.c_str(), open_by_force))
		throw Exception("Cannot open output file " + outfile);

	return outStreamSpec->File.GetHandle();
}

STDMETHODIMP P7ZipArchiveUpdateCallback::GetVolumeStream(UInt32 index, ISequentialOutStream **volumeStream)
{
  wchar_t temp[16];
  ConvertUInt32ToString(index + 1, temp);
  UString res = temp;
  while (res.Length() < 2)
    res = UString(L'0') + res;
  UString fileName = VolName;
  fileName += L'.';
  fileName += res;
  fileName += VolExt;
  COutFileStream *streamSpec = new COutFileStream;
  CMyComPtr<ISequentialOutStream> streamLoc(streamSpec);
  if (!streamSpec->Create(fileName, false))
    return ::GetLastError();
  *volumeStream = streamLoc.Detach();
  return S_OK;
}

STDMETHODIMP CArchiveUpdateCallback::GetVolumeStream(UInt32 index, ISequentialOutStream **volumeStream)
{
  COM_TRY_BEGIN
  char temp[16];
  ConvertUInt32ToString(index + 1, temp);
  FString res (temp);
  while (res.Len() < 2)
    res.InsertAtFront(FTEXT('0'));
  FString fileName = VolName;
  fileName += '.';
  fileName += res;
  fileName += VolExt;
  COutFileStream *streamSpec = new COutFileStream;
  CMyComPtr<ISequentialOutStream> streamLoc(streamSpec);
  if (!streamSpec->Create(fileName, false))
    return ::GetLastError();
  *volumeStream = streamLoc.Detach();
  return S_OK;
  COM_TRY_END
}

//.........这里部分代码省略.........
  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;
	}
  }

  CMyComPtr<ISequentialOutStream> outStream;
  COutFileStream *outStreamSpec = NULL;
  if (stdOutMode)
  {
	outStream = new CStdOutFileStream;
	MY_SET_BINARY_MODE(stdout);
  }
  else
  {
	if (paramIndex >= nonSwitchStrings.Size())
	  IncorrectCommand();
	const UString &outputName = nonSwitchStrings[paramIndex++]; 
	outStreamSpec = new COutFileStream;
	outStream = outStreamSpec;
	if (!outStreamSpec->Create(GetSystemString(outputName), true))
	{
	  fprintf(stderr, "\nError: can not open output file %s\n", 
		(const char *)GetOemString(outputName));
	  return 1;
	}
  }

  if (parser[NKey::kFilter86].ThereIs)
  {
	// -f86 switch is for x86 filtered mode: BCJ + LZMA.
	if (parser[NKey::kEOS].ThereIs || stdInMode)
	  throw "Can not use stdin in this mode";
	UInt64 fileSize;
	inStreamSpec->File.GetLength(fileSize);
	if (fileSize > 0xF0000000)
	  throw "File is too big";
	UInt32 inSize = (UInt32)fileSize;
	Byte *inBuffer = 0;
	if (inSize != 0)

bool LZMAEncodeFile ( const char *fromFile, const char *toFile, CProgressInfo7Zip *progress )
{
	bool eos = false;

	CMyComPtr<ISequentialInStream> inStream;
	CInFileStream *inStreamSpec = new CInFileStream;
	inStream = inStreamSpec;

	if ( !inStreamSpec->Open ( GetSystemString(fromFile) ) )
		return false;

	CMyComPtr<ISequentialOutStream> outStream;
	COutFileStream *outStreamSpec = new COutFileStream;
	outStream = outStreamSpec;
	if ( !outStreamSpec->Create ( GetSystemString(toFile), true ) )
		return false;

    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 false;
    encoderSpec->WriteCoderProperties(outStream);

	UInt64 fileSize = 0;
    if ( eos )
      fileSize = (UInt64)(Int64)-1;
    else
      inStreamSpec->File.GetLength(fileSize);

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

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

    HRESULT result = encoder->Code(inStream, outStream, 0, 0, progress );
    if (result == E_OUTOFMEMORY)
//.........这里部分代码省略.........

//.........这里部分代码省略.........
  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(us2fs(inputName)))
    {
      fprintf(stderr, "\nError: can not open input file %s\n",
          (const char *)GetOemString(inputName));
      return 1;
    }
  }

  CMyComPtr<ISequentialOutStream> outStream;
  COutFileStream *outStreamSpec = NULL;
  if (stdOutMode)
  {
    outStream = new CStdOutFileStream;
    MY_SET_BINARY_MODE(stdout);
  }
  else
  {
    if (paramIndex >= nonSwitchStrings.Size())
      IncorrectCommand();
    const UString &outputName = nonSwitchStrings[paramIndex++];
    outStreamSpec = new COutFileStream;
    outStream = outStreamSpec;
    if (!outStreamSpec->Create(us2fs(outputName), true))
    {
      fprintf(stderr, "\nError: can not open output file %s\n",
        (const char *)GetOemString(outputName));
      return 1;
    }
  }

  if (parser[NKey::kFilter86].ThereIs)
  {
    // -f86 switch is for x86 filtered mode: BCJ + LZMA.
    if (parser[NKey::kEOS].ThereIs || stdInMode)
      throw "Can not use stdin in this mode";
    UInt64 fileSize;
    inStreamSpec->File.GetLength(fileSize);
    if (fileSize > 0xF0000000)
      throw "File is too big";
    size_t inSize = (size_t)fileSize;
    Byte *inBuffer = 0;
    if (inSize != 0)

//.........这里部分代码省略.........
  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;
    }
  }

  CMyComPtr<ISequentialOutStream> outStream;
  if (stdOutMode)
  {
    outStream = new CStdOutFileStream;
    MY_SET_BINARY_MODE(stdout);
  }
  else
  {
    if (paramIndex >= nonSwitchStrings.Size())
      IncorrectCommand();
    const UString &outputName = nonSwitchStrings[paramIndex++]; 
    COutFileStream *outStreamSpec = new COutFileStream;
    outStream = outStreamSpec;
    if (!outStreamSpec->Create(GetSystemString(outputName), true))
    {
      fprintf(stderr, "\nError: can not open output file %s\n", 
        (const char *)GetOemString(outputName));
      return 1;
    }
  }

  if (parser[NKey::kFilter86].ThereIs)
  {
    // -f86 switch is for x86 filtered mode: BCJ + LZMA.
    if (parser[NKey::kEOS].ThereIs || stdInMode)
      throw "Can not use stdin in this mode";
    UInt64 fileSize;
    inStreamSpec->File.GetLength(fileSize);
    if (fileSize > 0xF0000000)
      throw "File is too big";
    UInt32 inSize = (UInt32)fileSize;
    Byte *inBuffer = 0;
    if (inSize != 0)
    {
      inBuffer = (Byte *)MyAlloc((size_t)inSize); 
      if (inBuffer == 0)
        throw kCantAllocate;
    }
    
    UInt32 processedSize;
    if (inStream->Read(inBuffer, (UInt32)inSize, &processedSize) != S_OK)
      throw "Can not read";
    if ((UInt32)inSize != processedSize)
      throw "Read size error";

//.........这里部分代码省略.........
  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;
    }
  }

  CMyComPtr<ISequentialOutStream> outStream;
  if (stdOutMode)
  {
    outStream = new CStdOutFileStream;
    MY_SET_BINARY_MODE(stdout);
  }
  else
  {
    if (paramIndex >= nonSwitchStrings.Size())
      IncorrectCommand();
    const UString &outputName = nonSwitchStrings[paramIndex++]; 
    COutFileStream *outStreamSpec = new COutFileStream;
    outStream = outStreamSpec;
    if (!outStreamSpec->Open(GetSystemString(outputName)))
    {
      fprintf(stderr, "\nError: can not open output file %s\n", 
        (const char *)GetOemString(outputName));
      return 1;
    }
  }

  UInt64 fileSize;
  if (encodeMode)
  {
    NCompress::NLZMA::CEncoder *encoderSpec = 
      new NCompress::NLZMA::CEncoder;
    CMyComPtr<ICompressCoder> encoder = encoderSpec;

    UInt32 dictionary = 1 << 23;
    UInt32 posStateBits = 0;
    // 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;
    UString mf = L"BT4";

    bool eos = parser[NKey::kEOS].ThereIs || stdInMode;
 
    if(parser[NKey::kMode].ThereIs)
      if (!GetNumber(parser[NKey::kMode].PostStrings[0], algorithm))
        IncorrectCommand();