Function getiofile

Source/Misc/lua/src/lua.c:12104–12111

static FILE *getiofile (lua_State *L, int findex) {
FILE *f;
lua_rawgeti(L, LUA_ENVIRONINDEX, findex);
f = *(FILE **)lua_touserdata(L, -1);
if (f == NULL)
luaL_error(L, "standard %s file is closed", fnames[findex - 1]);
return f;
}


static int g_iofile (lua_State *L, int f, const char *mode) {