C/C++ 如何调用Lua中的数据

/*1.lua*/

luat_Test1={a=123, b=456, c=789}

luat_Test2={123, 456, 789}

luatable = {

{

Level = 1,sid = "monster"

},

{

Level = 2,sid = "man"

}

}

for i,v in pairs(luatable)do

for j,v1 in pairs(v)do

print(j,v1);

end;

end;

#include <lua.hpp>

#include<iostream>

using namespace std;

static void ReadTableFromItem(lua_State *L, const char* lpszTableName, const char* lpszTableItem)

{

//获取lua中的lpszTableName Table的值 ,并压入栈

lua_getglobal(L, lpszTableName);

//把字符串压入栈顶

lua_pushstring(L, lpszTableItem);

<span style="font-size:12px;"><span style="font-family:SimSun;">//lua_getta</span><span style="font-family:SimSun;">ble以table在栈</span><span style="font-family:SimSun;">中的索引作为参数，弹出栈顶的元素作为key，返回与key对应的value并压入栈顶。</span></span>

<span style="font-family: SimSun;font-size:12px;">//</span><span style="font-family: SimSun;font-size:12px;">lua_gettable会弹出栈顶的key，然后把对应的value压入</span>

lua_gettable(L, -2);

printf("%s.%s=%d\n", lpszTableName, lpszTableItem, (int)lua_tonumber(L, -1));

//弹出两个数据

lua_pop(L,2);

}

static void ReadTableFromIndex(lua_State *L, const char* lpszTableName, int index)

{

lua_getglobal(L, lpszTableName);

//取得table[index]并放到栈顶

lua_rawgeti(L, -1, index);

printf("%s[%d]=%d\n", lpszTableName, index, (int)lua_tonumber(L, -1));

lua_pop(L, 2);

}

static void EnumTableItem(lua_State *L, const char* lpszTableName)

{

lua_getglobal(L, lpszTableName);

int it = lua_gettop(L);//取得栈顶元素的索引，即栈中元素的个数

lua_pushnil(L);//压入nil到栈里

printf("Enum %s:", lpszTableName);

/*

lua_next() 这个函数的工作过程是：

1) 先从栈顶弹出一个 key

2) 从栈指定位置的 table 里取下一对 key-value，先将 key 入栈再将 value 入栈

3) 如果第 2 步成功则返回非 0 值，否则返回 0，并且不向栈中压入任何值

*/

while(lua_next(L, it))

{

printf(" %d", (int)lua_tonumber(L, -1));

lua_pop(L, 1);

}

printf("\n");

lua_pop(L, 1);

}

int main (int argc, char* argv[])

{

lua_State *L = luaL_newstate();

luaopen_base(L);

luaL_dofile(L, "2.lua");

ReadTableFromItem(L, "luat_Test1", "a"); // 等价与lua代码：print(luat_Test1.a)

ReadTableFromItem(L, "luat_Test1", "b");

ReadTableFromItem(L, "luat_Test1", "c");

EnumTableItem(L, "luat_Test1"); // 枚举Table

ReadTableFromIndex(L, "luat_Test2", 1); // 等价与lua代码：print(luat_Test1[1])

ReadTableFromIndex(L, "luat_Test2", 2);

ReadTableFromIndex(L, "luat_Test2", 3);

EnumTableItem(L, "luat_Test2");

lua_close(L);

getchar();

return 0;

}