registerarc.h

一个7ZIP的解压源码。比较详细。里面含有四种语言的实现代码。

// RegisterArc.h

#ifndef __REGISTERARC_H
#define __REGISTERARC_H

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

typedef IInArchive * (*CreateInArchiveP)();
typedef IOutArchive * (*CreateOutArchiveP)();

struct CArcInfo
{
  const wchar_t *Name;
  const wchar_t *Ext;
  const wchar_t *AddExt;
  Byte ClassId;
  Byte Signature[16];
  int SignatureSize;
  bool KeepName;
  CreateInArchiveP CreateInArchive;
  CreateOutArchiveP CreateOutArchive;
};

void RegisterArc(const CArcInfo *arcInfo);

#define REGISTER_ARC_NAME(x) CRegister ## x 

#define REGISTER_ARC_DEC_SIG(x) struct REGISTER_ARC_NAME(x) { \
    REGISTER_ARC_NAME(x)() { g_ArcInfo.Signature[0]--; RegisterArc(&g_ArcInfo); }}; \
    static REGISTER_ARC_NAME(x) g_RegisterArc;

#define REGISTER_ARC(x) struct REGISTER_ARC_NAME(x) { \
    REGISTER_ARC_NAME(x)() { RegisterArc(&g_ArcInfo); }}; \
    static REGISTER_ARC_NAME(x) g_RegisterArc;

#endif