Function LoadFile

auxiliary.go:484–523

(l *State, fileName, mode string)

}

func LoadFile(l *State, fileName, mode string) error {
	var f *os.File
	fileNameIndex := l.Top() + 1
	fileError := func(what string) error {
		fileName, _ := l.ToString(fileNameIndex)
		l.PushFString("cannot %s %s", what, fileName[1:])
		l.Remove(fileNameIndex)
		return FileError
	}
	if fileName == "" {
		l.PushString("=stdin")
		f = os.Stdin
	} else {
		l.PushString("@" + fileName)
		var err error
		if f, err = os.Open(fileName); err != nil {
			return fileError("open")
		}
	}
	r := bufio.NewReader(f)
	if skipped, err := skipComment(r); err != nil {
		l.SetTop(fileNameIndex)
		return fileError("read")
	} else if skipped {
		r = bufio.NewReader(io.MultiReader(strings.NewReader("\n"), r))
	}
	s, _ := l.ToString(-1)
	err := l.Load(r, s, mode)
	if f != os.Stdin {
		_ = f.Close()
	}
	switch err {
	case nil, SyntaxError, MemoryError: // do nothing
	default:
		l.SetTop(fileNameIndex)
		return fileError("read")
	}
	l.Remove(fileNameIndex)
	return err
}

func LoadString(l *State, s string) error { return LoadBuffer(l, s, s, "") }