bzip2handler.h

7-Zip 是一款号称有着现今最高压缩比的压缩软件

// BZip2/Handler.h

#ifndef __BZIP2_HANDLER_H
#define __BZIP2_HANDLER_H

#include "Common/MyCom.h"
#include "../IArchive.h"
#include "../../Common/CreateCoder.h"
#include "BZip2Item.h"

#ifdef COMPRESS_MT
#include "../../../Windows/System.h"
#endif

namespace NArchive {
namespace NBZip2 {

class CHandler:
  public IInArchive,
  public IOutArchive,
  public ISetProperties,
  PUBLIC_ISetCompressCodecsInfo
  public CMyUnknownImp
{
  CMyComPtr<IInStream> _stream;
  NArchive::NBZip2::CItem _item;
  UInt64 _streamStartPosition;

  UInt32 _level;
  UInt32 _dicSize;
  UInt32 _numPasses;
  #ifdef COMPRESS_MT
  UInt32 _numThreads;
  #endif

  DECL_EXTERNAL_CODECS_VARS

  void InitMethodProperties()
  {
    _level = 5;
    _dicSize =
    _numPasses = 0xFFFFFFFF;
    #ifdef COMPRESS_MT
    _numThreads = NWindows::NSystem::GetNumberOfProcessors();;
    #endif
  }

public:
  MY_QUERYINTERFACE_BEGIN2(IInArchive)
  MY_QUERYINTERFACE_ENTRY(IOutArchive)
  MY_QUERYINTERFACE_ENTRY(ISetProperties)
  QUERY_ENTRY_ISetCompressCodecsInfo
  MY_QUERYINTERFACE_END
  MY_ADDREF_RELEASE

  INTERFACE_IInArchive(;)
  INTERFACE_IOutArchive(;)

  STDMETHOD(SetProperties)(const wchar_t **names, const PROPVARIANT *values, Int32 numProperties);

  DECL_ISetCompressCodecsInfo

  CHandler() { InitMethodProperties(); }
};

}}

#endif