c++操作lua表

/*1.取表中的元素void lua_getfield (lua_State *L, int index, const char *k)說明：從棧中取出下標為index的表,並將此表鍵為k的值壓入棧中操作:arr = Stack[index]      取出表Stack.push( arr[k] )    將表的元素壓入棧中2.給表中的元素賦值void lua_setfield (lua_State *L, int index, const char *k)說明：從棧中取出下標為index的表,並給此表鍵為k的元素賦值value（value為棧頂元素）,最後彈出棧頂元素操作:   arr = Stack[index]       取出表arr[k] = Stack.top()     給k賦值Stack.pop()              彈出棧頂元素棧高度-1, 被彈出的是value注意, 該操作將觸發 __newindex 元方法*/table.lua文本

title=”Description of personal information”–個人資訊描述
ta_info={address=”guangdong”,name=”liuwen”,age=26,sex=1,birth=”1991-02-25”}

//1.建立Lua狀態  lua_State *L = luaL_newstate();  if (L == NULL)  {      return ;  }  //2.載入Lua檔案  int bRet = luaL_loadfile(L,"table.lua");  if(bRet)  {      OutputDebugString("lwlog::load file error");      return ;  }  //3.運行Lua檔案  bRet = lua_pcall(L,0,0,0);  if(bRet)  {      OutputDebugString("lwlog::pcall error");     return ;  }  //4.讀取變數  lua_getglobal(L,"title");  string str = lua_tostring(L,-1); CString lwlog;lwlog.Format("lwlog::title=%s",str.c_str());OutputDebugString(lwlog);    //5.讀取table  lua_getglobal(L,"ta_info");//讀取address元素lua_getfield(L,-1,"address");  str = lua_tostring(L,-1);  lwlog.Format("lwlog::ta_info::address=%s",str.c_str());OutputDebugString(lwlog);  //讀取name元素lua_getfield(L,-2,"name");  str = lua_tostring(L,-1);  lwlog.Format("lwlog::ta_info::name=%s",str.c_str());OutputDebugString(lwlog); //讀取age元素lua_getfield(L,-3,"age");    lwlog.Format("lwlog::ta_info::age=%f",lua_tonumber(L,-1));OutputDebugString(lwlog); //讀取sex元素lua_getfield(L,-4,"sex");    lwlog.Format("lwlog::ta_info::sex=%f",lua_tonumber(L,-1));OutputDebugString(lwlog); //讀取birth元素lua_getfield(L,-5,"birth");  str = lua_tostring(L,-1);lwlog.Format("lwlog::ta_info::birth=%s",str.c_str());OutputDebugString(lwlog); //改變name元素的值lua_pushstring(L,"zhangyang");lua_setfield(L,-7,"name");lua_getfield(L,-6,"name");  str = lua_tostring(L,-1);  lwlog.Format("lwlog::ta_info::name改變值=%s",str.c_str());OutputDebugString(lwlog);     lwlog.Format("lwlog::lua_gettop棧大小=%d",lua_gettop(L));OutputDebugString(lwlog);  //至此，棧中的情況是：  //=================== 棧頂 ===================   //  索引  類型      值  //  -1   string：   zhangyang//  -2   string：   1991-02-25//  -3   double：   1//  -4   double：   26 //  -5   string：   zhangyang //  -6   string：   guangdong   //  -7   table:     ta_info  //  -8   string:    Description of personal information  //=================== 棧底 ===================  //關閉state  lua_close(L); 

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