Function savestateobj2filename

src/lua-engine.cpp:2941–2960

Helper function to convert a savestate object to the filename it represents.

// Helper function to convert a savestate object to the filename it represents.
static const char *savestateobj2filename(lua_State *L, int offset) {

	// First we get the metatable of the indicated object
	int result = lua_getmetatable(L, offset);

	if (!result)
		luaL_error(L, "object not a savestate object");

	// Also check that the type entry is set
	lua_getfield(L, -1, "__metatable");
	if (strcmp(lua_tostring(L,-1), "FCEU Savestate") != 0)
		luaL_error(L, "object not a savestate object");
	lua_pop(L,1);

	// Now, get the field we want
	lua_getfield(L, -1, "filename");

	// Return it
	return lua_tostring(L, -1);
}

// Helper function for garbage collection.
static int savestate_gc(lua_State *L) {