gistfile1.go

package main

import (
  "flag"
  "github.com/Bowery/prompt"
  "os"
)

var (
  prefix string
  silent bool
)

func init() {
  flag.StringVar(&prefix, "p", "", "Display a prompt prefix.")
  flag.BoolVar(&silent, "s", false, "Silent mode, characters are not printed.")
}

func main() {
  flag.Parse()
  var (
    out string
    err error
  )

  if silent {
    out, err = prompt.Password(prefix)
  } else {
    out, err = prompt.Basic(prefix, false)
  }

  if err != nil {
    os.Stderr.Write([]byte(err.Error()))
    os.Exit(1)
  }

  os.Stdout.Write([]byte(out + "\n"))
}