test.go

package main

import (
	"bytes"
	"fmt"
	"time"
)

func Strappend(p string, a string) string {
	b := bytes.NewBufferString(p)
	for i := 0; i < len(a); i++ {
		b.WriteByte(a[i])
	}
	return b.String()
}

func HumanTime(s int) string {
	tdesc := map[string]int{
		"s": 1,
		"m": 60,
		"h": 60 * 60,
		"d": (60 * 60) * 24,
		"w": ((60 * 60) * 24) * 7,
		"M": ((60 * 60) * 24) * 30,
		"y": ((60 * 60) * 24) * 365,
	}
	keys := []string{"y", "M", "w", "d", "h", "m", "s"}
	retv := ""
	for _, t := range keys {
		val := (s / tdesc[t])
		tgt := (val * tdesc[t])
		if s >= tdesc[t] {
			retv = Strappend(retv, fmt.Sprintf("%02d%s", val, t))
			s = (s - tgt)
		}
	}
	return retv
}

// Starting things rolling down the hill
func main() {
	for i := 0; i <= 160; i++ {
		fmt.Printf(" %d == %s\n", i, HumanTime(i))
		time.Sleep(100 * time.Millisecond)
	}
}