C++ CMyComPtr::Read方法代码示例

本文整理汇总了C++中CMyComPtr::Read方法的典型用法代码示例。如果您正苦于以下问题：C++ CMyComPtr::Read方法的具体用法？C++ CMyComPtr::Read怎么用？C++ CMyComPtr::Read使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CMyComPtr的用法示例。

在下文中一共展示了CMyComPtr::Read方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: LZMADecodeFile

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;
}

开发者ID:donbex，项目名称:spkutils，代码行数:58，代码来源:File.cpp

示例2: decode

void decode(NCompress::NLzma::CDecoder *decoderSpec,
		CMyComPtr<ISequentialInStream> inStream,
		CMyComPtr<ISequentialOutStream> outStream)
{
	const UInt32 kPropertiesSize = 5;
	Byte properties[kPropertiesSize];
	UInt32 processedSize;
	UInt64 fileSize = 0;

	if (inStream->Read(properties, kPropertiesSize, &processedSize) != S_OK)
		throw Exception("Read error");
	if (processedSize != kPropertiesSize)
		throw Exception("Read error");
	if (decoderSpec->SetDecoderProperties2(properties, kPropertiesSize) != S_OK)
		throw Exception("SetDecoderProperties() error");

	for (int i = 0; i < 8; i++)
	{
		Byte b;

		if (inStream->Read(&b, sizeof(b), &processedSize) != S_OK)
			throw Exception("Read error");
		if (processedSize != 1)
			throw Exception("Read error");

		fileSize |= ((UInt64)b) << (8 * i);
	}

	if (decoderSpec->Code(inStream, outStream, 0, &fileSize, 0) != S_OK)
		throw Exception("Decoder error");
}

开发者ID:119，项目名称:aircam-openwrt，代码行数:31，代码来源:lzmp.cpp

示例3:

unsigned char *LZMADecodeData ( unsigned char *fromData, long fromSize, long &toSize, CProgressInfo7Zip *progress )
{
	CMyComPtr<ISequentialInStream> inStream;
	CInDataStream *inStreamSpec = new CInDataStream;
	inStream = inStreamSpec;

	inStreamSpec->LoadData ( fromData, fromSize );

	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 NULL;

	if ( processedSize != kPropertiesSize )
		return NULL;

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

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

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

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

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

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

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

	toSize = outStreamSpec->GetCurrentSize ();
	return outStreamSpec->GetData ();
}

开发者ID:donbex，项目名称:spkutils，代码行数:59，代码来源:File.cpp

示例4: ReadStream

static bool ReadStream(CMyComPtr<IInStream> & inStream, Int64 offset, UINT32 seekOrigin, CByteBuffer & signature)
{
  UInt64 savedPosition = 0;
  UInt64 newPosition = 0;
#if MY_VER_MAJOR >= 15
  UInt32 readCount = signature.Size();
#else
  UInt32 readCount = signature.GetCapacity();
#endif
  unsigned char * buf = signature;

  if (S_OK != inStream->Seek(0, FILE_CURRENT, &savedPosition))
    return false;

  if (S_OK != inStream->Seek(offset, seekOrigin, &newPosition)) {
    inStream->Seek(savedPosition, FILE_BEGIN, &newPosition); //restore pos
    return false;
  }

  while (readCount > 0) {
    UInt32 processedCount = 0;

    if (S_OK != inStream->Read(buf, readCount, &processedCount)) {
      inStream->Seek(savedPosition, FILE_BEGIN, &newPosition); //restore pos
      return false;
    }

    if (processedCount == 0)
      break;

    readCount -= processedCount;
    buf += processedCount;
  }

  inStream->Seek(savedPosition, FILE_BEGIN, &newPosition); //restore pos

  return readCount == 0;
}

开发者ID:stonewell，项目名称:lib7zip，代码行数:38，代码来源:7ZipOpenArchive.cpp

示例5: main2


//.........这里部分代码省略.........
  {
    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";

    Byte *outBuffer = 0;
    size_t outSizeProcessed;
    if (encodeMode)
    {
      // we allocate 105% of original size for output buffer
      size_t outSize = (size_t)fileSize / 20 * 21 + (1 << 16);
      if (outSize != 0)
      {
        outBuffer = (Byte *)MyAlloc((size_t)outSize); 
        if (outBuffer == 0)
          throw kCantAllocate;
      }
      if (!dictionaryIsDefined)
        dictionary = 1 << 23;
      int res = LzmaRamEncode(inBuffer, inSize, outBuffer, outSize, &outSizeProcessed, 
          dictionary, SZ_FILTER_AUTO);
      if (res != 0)
      {
        fprintf(stderr, "\nEncoder error = %d\n", (int)res);
        return 1;
      }
    }
    else
    {
      size_t outSize;
      if (LzmaRamGetUncompressedSize(inBuffer, inSize, &outSize) != 0)
        throw "data error";
      if (outSize != 0)

开发者ID:BackupTheBerlios，项目名称:sotu-svn，代码行数:67，代码来源:LzmaAlone.cpp

注：本文中的CMyComPtr::Read方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。