mirror of https://github.com/chzyer/readline.git
121 lines
2.3 KiB
Go
121 lines
2.3 KiB
Go
package main
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import (
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"io"
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"log"
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"strconv"
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"strings"
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"time"
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"github.com/chzyer/readline"
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)
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func usage(w io.Writer) {
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io.WriteString(w, `
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login
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setprompt <prompt>
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say <hello>
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bye
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`[1:])
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}
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var completer = readline.NewPrefixCompleter(
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readline.PcItem("mode",
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readline.PcItem("vi"),
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readline.PcItem("emacs"),
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),
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readline.PcItem("login"),
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readline.PcItem("say",
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readline.PcItem("hello"),
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readline.PcItem("bye"),
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),
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readline.PcItem("setprompt"),
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readline.PcItem("bye"),
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readline.PcItem("help"),
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readline.PcItem("go",
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readline.PcItem("build", readline.PcItem("-o"), readline.PcItem("-v")),
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readline.PcItem("install",
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readline.PcItem("-v"),
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readline.PcItem("-vv"),
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readline.PcItem("-vvv"),
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),
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readline.PcItem("test"),
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),
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readline.PcItem("sleep"),
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)
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func main() {
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l, err := readline.NewEx(&readline.Config{
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Prompt: "\033[31m»\033[0m ",
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HistoryFile: "/tmp/readline.tmp",
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AutoComplete: completer,
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InterruptPrompt: "\nInterrupt, Press Ctrl+D to exit",
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EOFPrompt: "exit",
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})
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if err != nil {
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panic(err)
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}
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defer l.Close()
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log.SetOutput(l.Stderr())
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for {
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line, err := l.Readline()
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if err == io.EOF {
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break
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}
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line = strings.TrimSpace(line)
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switch {
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case strings.HasPrefix(line, "mode "):
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switch line[5:] {
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case "vi":
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l.SetVimMode(true)
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case "emacs":
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l.SetVimMode(false)
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default:
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println("invalid mode:", line[5:])
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}
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case line == "mode":
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if l.IsVimMode() {
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println("current mode: vim")
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} else {
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println("current mode: emacs")
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}
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case line == "login":
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pswd, err := l.ReadPassword("please enter your password: ")
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if err != nil {
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break
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}
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println("you enter:", strconv.Quote(string(pswd)))
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case line == "help":
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usage(l.Stderr())
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case strings.HasPrefix(line, "setprompt"):
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prompt := line[10:]
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if prompt == "" {
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log.Println("setprompt <prompt>")
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break
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}
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l.SetPrompt(prompt)
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case strings.HasPrefix(line, "say"):
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line := strings.TrimSpace(line[3:])
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if len(line) == 0 {
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log.Println("say what?")
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break
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}
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go func() {
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for _ = range time.Tick(time.Second) {
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log.Println(line)
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}
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}()
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case line == "bye":
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goto exit
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case line == "sleep":
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log.Println("sleep 4 second")
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time.Sleep(4 * time.Second)
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case line == "":
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default:
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log.Println("you said:", strconv.Quote(line))
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}
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}
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exit:
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}
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