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C++ CMyComPtr::Attach方法代码示例

本文整理汇总了C++中CMyComPtr::Attach方法的典型用法代码示例。如果您正苦于以下问题:C++ CMyComPtr::Attach方法的具体用法?C++ CMyComPtr::Attach怎么用?C++ CMyComPtr::Attach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CMyComPtr的用法示例。


在下文中一共展示了CMyComPtr::Attach方法的1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: Decode

HRESULT CZipDecoder::Decode(
    DECL_EXTERNAL_CODECS_LOC_VARS
    CInArchive &archive, const CItemEx &item,
    ISequentialOutStream *realOutStream,
    IArchiveExtractCallback *extractCallback,
    ICompressProgressInfo *compressProgress,
    UInt32 numThreads, Int32 &res)
{
  res = NArchive::NExtract::NOperationResult::kDataError;
  CInStreamReleaser inStreamReleaser;

  bool needCRC = true;
  bool wzAesMode = false;
  bool pkAesMode = false;
  UInt16 methodId = item.CompressionMethod;
  if (item.IsEncrypted())
  {
    if (item.IsStrongEncrypted())
    {
      CStrongCryptoField f;
      if (item.CentralExtra.GetStrongCryptoField(f))
      {
        pkAesMode = true;
      }
      if (!pkAesMode)
      {
        res = NArchive::NExtract::NOperationResult::kUnSupportedMethod;
        return S_OK;
      }
    }
    if (methodId == NFileHeader::NCompressionMethod::kWzAES)
    {
      CWzAesExtraField aesField;
      if (item.CentralExtra.GetWzAesField(aesField))
      {
        wzAesMode = true;
        needCRC = aesField.NeedCrc();
      }
    }
  }
    
  COutStreamWithCRC *outStreamSpec = new COutStreamWithCRC;
  CMyComPtr<ISequentialOutStream> outStream = outStreamSpec;
  outStreamSpec->SetStream(realOutStream);
  outStreamSpec->Init(needCRC);
  
  UInt64 authenticationPos;
  
  CMyComPtr<ISequentialInStream> inStream;
  {
    UInt64 packSize = item.PackSize;
    if (wzAesMode)
    {
      if (packSize < NCrypto::NWzAes::kMacSize)
        return S_OK;
      packSize -= NCrypto::NWzAes::kMacSize;
    }
    UInt64 dataPos = item.GetDataPosition();
    inStream.Attach(archive.CreateLimitedStream(dataPos, packSize));
    authenticationPos = dataPos + packSize;
  }
  
  CMyComPtr<ICompressFilter> cryptoFilter;
  if (item.IsEncrypted())
  {
    if (wzAesMode)
    {
      CWzAesExtraField aesField;
      if (!item.CentralExtra.GetWzAesField(aesField))
        return S_OK;
      methodId = aesField.Method;
      if (!_wzAesDecoder)
      {
        _wzAesDecoderSpec = new NCrypto::NWzAes::CDecoder;
        _wzAesDecoder = _wzAesDecoderSpec;
      }
      cryptoFilter = _wzAesDecoder;
      Byte properties = aesField.Strength;
      RINOK(_wzAesDecoderSpec->SetDecoderProperties2(&properties, 1));
    }
    else if (pkAesMode)
    {
      if (!_pkAesDecoder)
      {
        _pkAesDecoderSpec = new NCrypto::NZipStrong::CDecoder;
        _pkAesDecoder = _pkAesDecoderSpec;
      }
      cryptoFilter = _pkAesDecoder;
    }
    else
    {
      if (!_zipCryptoDecoder)
      {
        _zipCryptoDecoderSpec = new NCrypto::NZip::CDecoder;
        _zipCryptoDecoder = _zipCryptoDecoderSpec;
      }
      cryptoFilter = _zipCryptoDecoder;
    }
    CMyComPtr<ICryptoSetPassword> cryptoSetPassword;
    RINOK(cryptoFilter.QueryInterface(IID_ICryptoSetPassword, &cryptoSetPassword));
//.........这里部分代码省略.........
开发者ID:Bernieboy,项目名称:nds4ios,代码行数:101,代码来源:ZipHandler.cpp


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