package main

import (
	"os/user"
	"strconv"
)

func usergroupids(username string, groupname string) (int, int, error) {
	u, err := user.Lookup(username)
	if err != nil {
		return -1, -1, err
	}

	uid, _ := strconv.Atoi(u.Uid)
	gid, _ := strconv.Atoi(u.Gid)

	if groupname != "" {
		g, err := user.LookupGroup(groupname)
		if err != nil {
			return uid, -1, err
		}
		gid, _ = strconv.Atoi(g.Gid)
	}
	return uid, gid, nil
}