package encode

func XEncode(str string, key string) string {

}

func s(origin string, b bool) (result []rune) {
	data := []rune(origin)
	dataLen := len(origin)

	resultLen := (dataLen / 4) + 1
	if b {
		result = make([]rune, resultLen+1)
		result[resultLen] = rune(resultLen)
	} else {
		result = make([]rune, resultLen)
	}

	for i := 0; i < dataLen; i += 4 {
		result[i>>2] = get(data, i, dataLen) | get(data, i+1, dataLen)<<8 | get(data, i+2, dataLen)<<16 | get(data, i+3, dataLen)<<24
	}

	return result
}

func l(a string, b bool) (result []rune) {
	d := len(a)
	data := []rune(a)

	c := d - 1<<2

	if b {
		m := int(data[d-1])
		if m < c-3 || m > c {
			return nil
		}
		c = m
	}
}

func get(str []rune, index int, length int) rune {
	if index >= length {
		return 0
	} else {
		return str[index]
	}
}