package trie

import "strings"

type SplitFunc func(string) (label, rest string)

// www.example.com -> ("com", "www.example")
func SplitTLD(domain string) (label, rest string) {
	domain = strings.TrimRight(domain, ".")

	idx := strings.LastIndexByte(domain, '.')
	if idx == -1 {
		return domain, ""
	}

	label = domain[idx+1:]
	rest = domain[:idx]

	return label, rest
}