go 控制台 根据提示选择 go-prompt

package main

import (
  "fmt"
  "github.com/c-bata/go-prompt"
  "os"
  "os/signal"
  "syscall"
)

func base(d prompt.Document) []prompt.Suggest {
  s := []prompt.Suggest{
    {Text: "1", Description: "网卡配置"},
    {Text: "2", Description: "拨号管理"},
  }
  return prompt.FilterHasPrefix(s, d.GetWordBeforeCursor(), true)
}

func network1(d prompt.Document) []prompt.Suggest {
  s := []prompt.Suggest{
    {Text: "1", Description: "网卡1"},
    {Text: "2", Description: "网卡2"},
  }
  return prompt.FilterHasPrefix(s, d.GetWordBeforeCursor(), true)
}
func network2(d prompt.Document) []prompt.Suggest {
  s := []prompt.Suggest{
    {Text: "1", Description: "自动获取"},
    {Text: "2", Description: "手动配置"},
  }
  return prompt.FilterHasPrefix(s, d.GetWordBeforeCursor(), true)
}

func input(prompt string) string {
  var text string
  fmt.Print(prompt)
  _, err := fmt.Scan(&text)
  if err != nil {
    return ""
  }
  return text
}

func exitHandle(exitChan chan os.Signal) {
  for {
    select {
    case sig := <-exitChan:
      _ = sig
      //os.Exit(1) //如果ctrl+c 关不掉程序，使用os.Exit强行关掉
    }
  }

}

func main() {

  exitChan := make(chan os.Signal)
  signal.Notify(exitChan, os.Interrupt, os.Kill, syscall.SIGTERM)
  go exitHandle(exitChan)

LOOP:
  fmt.Println("请选择 \n" +
    "1 网卡配置 \n2 拨号管理 \n0 返回")
  t := prompt.Input("> ", base)

  if t == "1" {

    fmt.Println("可选择 1  网卡1    2 网卡2")
    t1 := prompt.Input("> ", network1)
    fmt.Println("You selected 网卡" + t1)
    fmt.Println("可选择 1  自动获取    2 手动配置")
    t2 := prompt.Input("> ", network2)
    fmt.Println("You selected 网卡" + t2)
    a := input("ip:")
    b := input("network: ")
    fmt.Println(a)
    fmt.Println(b)
  }

  goto LOOP

}