Esempio n. 1
0
func tourRunFunc(req cmds.Request, res cmds.Response) {

	cfg, err := req.InvocContext().GetConfig()
	if err != nil {
		res.SetError(err, cmds.ErrNormal)
		return
	}

	id := tour.TopicID(cfg.Tour.Last)
	if len(req.Arguments()) > 0 {
		id = tour.TopicID(req.Arguments()[0])
	}

	w := new(bytes.Buffer)
	t, err := tourGet(id)
	if err != nil {

		// If no topic exists for this id, we handle this error right here.
		// To help the user achieve the task, we construct a response
		// comprised of...
		// 1) a simple error message
		// 2) the full list of topics

		fmt.Fprintln(w, "ERROR")
		fmt.Fprintln(w, err)
		fmt.Fprintln(w, "")
		fprintTourList(w, tour.TopicID(cfg.Tour.Last))
		res.SetOutput(w)

		return
	}

	fprintTourShow(w, t)
	res.SetOutput(w)
}
Esempio n. 2
0
var cmdIpfsTourNext = &cmds.Command{
	Helptext: cmds.HelpText{
		Tagline: "Show the next IPFS Tour topic",
	},

	Run: func(req cmds.Request, res cmds.Response) {
		w := new(bytes.Buffer)
		path := req.InvocContext().ConfigRoot
		cfg, err := req.InvocContext().GetConfig()
		if err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}

		id := tour.NextTopic(tour.TopicID(cfg.Tour.Last))
		topic, err := tourGet(id)
		if err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}
		if err := fprintTourShow(w, topic); err != nil {
			res.SetError(err, cmds.ErrNormal)
			return
		}

		// topic changed, not last. write it out.
		if string(id) != cfg.Tour.Last {
			cfg.Tour.Last = string(id)
			err := writeConfig(path, cfg)
			if err != nil {