package fs import ( "os" "github.com/yuin/gopher-lua" ) func Loader(L *lua.LState) int { mod := L.SetFuncs(L.NewTable(), exports) L.Push(mod) return 1 } func LuaErr(L *lua.LState, code int) { L.Error(lua.LNumber(code), 1) } var exports = map[string]lua.LGFunction{ "cd": cd, } func cd(L *lua.LState) int { path := L.ToString(1) err := os.Chdir(path) if err != nil { switch err.(*os.PathError).Err.Error() { case "no such file or directory": LuaErr(L, 2) } } return 0 }