runlua.cpp

// Load stdlibs onto lua interpreter instance.
luaL_openlibs(this->L);

int s = luaL_dofile(this->L, file.c_str());

if (s == 0)
{
    // Execute the script.
    s = lua_pcall(L, 0, LUA_MULTRET, 0);
}

// Report errors.
if (s != 0)
{
    cerr << "!! " << lua_tostring(this->L, -1) << endl;
    lua_pop(this->L, 1);
}

lua_close(this->L);