agentproxy.h

7z一个高压缩比的压缩程序源代码,重要的是里面的算法值得学习

// AgentProxy.h

#ifndef __AGENT_PROXY_H
#define __AGENT_PROXY_H

#include "Common/MyString.h"

#include "../../Archive/IArchive.h"

class CProxyFile
{
public:
  UInt32 Index;
  UString Name;
};

class CProxyFolder: public CProxyFile
{
public:
  CProxyFolder *Parent;
  CObjectVector<CProxyFolder> Folders;
  CObjectVector<CProxyFile> Files;
  bool IsLeaf;

  bool CrcIsDefined;
  UInt64 Size;
  UInt64 PackSize;
  UInt32 Crc;
  UInt32 NumSubFolders;
  UInt32 NumSubFiles;

  CProxyFolder(): Parent(NULL) {};
  int FindDirSubItemIndex(const UString &name, int &insertPos) const;
  int FindDirSubItemIndex(const UString &name) const;
  CProxyFolder* AddDirSubItem(UInt32 index, bool leaf, const UString &name);
  void AddFileSubItem(UInt32 index, const UString &name);
  void Clear();

  void GetPathParts(UStringVector &pathParts) const;
  UString GetFullPathPrefix() const;
  UString GetItemName(UInt32 index) const;
  void AddRealIndices(CUIntVector &realIndices) const;
  void GetRealIndices(const UInt32 *indices, UInt32 numItems, CUIntVector &realIndices) const;
  void CalculateSizes(IInArchive *archive);
};

class CProxyArchive
{
  HRESULT ReadObjects(IInArchive *archive, IProgress *progress);
public:
  UString DefaultName;
  // FILETIME DefaultTime;
  // UInt32 DefaultAttributes;
  CProxyFolder RootFolder;
  HRESULT Reload(IInArchive *archive, IProgress *progress);
  HRESULT Load(IInArchive *archive,
      const UString &defaultName,
      // const FILETIME &defaultTime,
      // UInt32 defaultAttributes,
      IProgress *progress);
};

#endif