Beispiel #1
0
func (t *Term) handleExit() (int, error) {
	fullHistoryFile, err := config.GetConfigFilePath(historyFile)
	if err != nil {
		fmt.Println("Error saving history file:", err)
	} else {
		if f, err := os.OpenFile(fullHistoryFile, os.O_RDWR, 0666); err == nil {
			_, err := t.line.WriteHistory(f)
			if err != nil {
				fmt.Println("readline history error: ", err)
			}
			f.Close()
		}
	}

	s, err := t.client.GetState()
	if err != nil {
		return 1, err
	}
	if !s.Exited {
		kill := true
		if t.client.AttachedToExistingProcess() {
			answer, err := t.line.Prompt("Would you like to kill the process? [Y/n] ")
			if err != nil {
				return 2, io.EOF
			}
			answer = strings.ToLower(strings.TrimSpace(answer))
			kill = (answer != "n" && answer != "no")
		}
		err = t.client.Detach(kill)
		if err != nil {
			return 1, err
		}
	}
	return 0, nil
}
Beispiel #2
0
// Run begins running dlv in the terminal.
func (t *Term) Run() (int, error) {
	defer t.line.Close()

	// Send the debugger a halt command on SIGINT
	ch := make(chan os.Signal)
	signal.Notify(ch, sys.SIGINT)
	go func() {
		for range ch {
			_, err := t.client.Halt()
			if err != nil {
				fmt.Fprintf(os.Stderr, "%v", err)
			}
		}
	}()

	cmds := DebugCommands(t.client)
	if t.conf != nil && t.conf.Aliases != nil {
		cmds.Merge(t.conf.Aliases)
	}
	t.line.SetCompleter(func(line string) (c []string) {
		for _, cmd := range cmds.cmds {
			for _, alias := range cmd.aliases {
				if strings.HasPrefix(alias, strings.ToLower(line)) {
					c = append(c, alias)
				}
			}
		}
		return
	})

	fullHistoryFile, err := config.GetConfigFilePath(historyFile)
	if err != nil {
		fmt.Printf("Unable to load history file: %v.", err)
	}

	f, err := os.Open(fullHistoryFile)
	if err != nil {
		f, err = os.Create(fullHistoryFile)
		if err != nil {
			fmt.Printf("Unable to open history file: %v. History will not be saved for this session.", err)
		}
	}

	t.line.ReadHistory(f)
	f.Close()
	fmt.Println("Type 'help' for list of commands.")

	if t.InitFile != "" {
		err := cmds.executeFile(t, t.InitFile)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Error executing init file: %s\n", err)
		}
	}

	var status int
	for {
		cmdstr, err := t.promptForInput()
		if err != nil {
			if err == io.EOF {
				fmt.Println("exit")
				return t.handleExit()
			}
			err, status = fmt.Errorf("Prompt for input failed.\n"), 1
			break
		}

		cmdstr, args := parseCommand(cmdstr)
		cmd := cmds.Find(cmdstr)
		if err := cmd(t, args); err != nil {
			if _, ok := err.(ExitRequestError); ok {
				return t.handleExit()
			}
			// The type information gets lost in serialization / de-serialization,
			// so we do a string compare on the error message to see if the process
			// has exited, or if the command actually failed.
			if strings.Contains(err.Error(), "exited") {
				fmt.Fprintln(os.Stderr, err.Error())
			} else {
				fmt.Fprintf(os.Stderr, "Command failed: %s\n", err)
			}
		}
	}

	return status, nil
}