package main

import (
    "bytes"
    "fmt"
    "io"
    "io/ioutil"
    "os"
)

type pw struct {
    account, password string
    uid, gid          uint
    gecos
    directory, shell string
}

type gecos struct {
    fullname, office, extension, homephone, email string
}

func (p *pw) encode(w io.Writer) (int, error) {
    return fmt.Fprintf(w, "%s:%s:%d:%d:%s,%s,%s,%s,%s:%s:%s\n",
        p.account, p.password, p.uid, p.gid,
        p.fullname, p.office, p.extension, p.homephone, p.email,
        p.directory, p.shell)
}