Golang config.New函数代码示例

// Status is a command that allows a user to view their progress in a given
// language track.
func Status(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	args := ctx.Args()

	if len(args) != 1 {
		fmt.Fprintf(os.Stderr, "Usage: exercism status TRACK_ID")
		os.Exit(1)
	}

	client := api.NewClient(c)
	trackID := args[0]
	status, err := client.Status(trackID)
	if err != nil {
		if err == api.ErrUnknownTrack {
			log.Fatalf("There is no track with ID '%s'.", trackID)
		} else {
			log.Fatal(err)
		}
	}

	fmt.Println(status)
}

// List returns the full list of assignments for a given language
func List(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	args := ctx.Args()

	if len(args) != 1 {
		msg := "Usage: exercism list LANGUAGE"
		log.Fatal(msg)
	}

	language := args[0]
	client := api.NewClient(c)
	problems, err := client.List(language)
	if err != nil {
		if err == api.ErrUnknownLanguage {
			log.Fatalf("The requested language '%s' is unknown", language)
		}
		log.Fatal(err)
	}

	for _, p := range problems {
		fmt.Printf("%s\n", p)
	}
	fmt.Printf("\n%s\n\n", msgExplainFetch)
}

// Configure stores settings in a JSON file.
// If a setting is not passed as an argument, default
// values are used.
func Configure(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}

	key := ctx.String("key")
	host := ctx.String("host")
	dir := ctx.String("dir")
	api := ctx.String("api")

	if err := c.Update(key, host, dir, api); err != nil {
		log.Fatalf("Error updating your configuration %s\n", err)
	}

	if err := os.MkdirAll(c.Dir, os.ModePerm); err != nil {
		log.Fatalf("Error creating exercism directory %s\n", err)
	}

	if err := c.Write(); err != nil {
		log.Fatal(err)
	}

	fmt.Printf("The configuration has been written to %s\n", c.File)
	fmt.Printf("Your exercism directory can be found at %s\n", c.Dir)
}

// Demo returns one problem for each active track.
func Demo(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}

	client := api.NewClient(c)

	problems, err := client.Demo()
	if err != nil {
		log.Fatal(err)
	}

	if dirOpt := ctx.String("dir"); dirOpt != "" {
		c.SetDir(dirOpt)
	}

	fmt.Printf("Your exercises will be saved at: %s\n", c.Dir)
	hw := user.NewHomework(problems, c)
	if err := hw.Save(); err != nil {
		log.Fatal(err)
	}

	hw.Report(user.HWAll)

	fmt.Println("Next step: choose a language, read the README, and make the test suite pass.")
}

// List returns the full list of assignments for a given track.
func List(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	args := ctx.Args()

	if len(args) != 1 {
		msg := "Usage: exercism list TRACK_ID"
		log.Fatal(msg)
	}

	trackID := args[0]
	client := api.NewClient(c)
	problems, err := client.List(trackID)
	if err != nil {
		if err == api.ErrUnknownTrack {
			log.Fatalf("There is no track with ID '%s'.", trackID)
		}
		log.Fatal(err)
	}

	for _, p := range problems {
		fmt.Printf("%s\n", p)
	}
	fmt.Printf("\n%s\n\n", msgExplainFetch)
}

// Fetch downloads exercism problems and writes them to disk.
func Fetch(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	client := api.NewClient(c)

	problems, err := client.Fetch(ctx.Args())
	if err != nil {
		log.Fatal(err)
	}

	submissionInfo, err := client.Submissions()
	if err != nil {
		log.Fatal(err)
	}

	if err := setSubmissionState(problems, submissionInfo); err != nil {
		log.Fatal(err)
	}

	hw := user.NewHomework(problems, c)
	if err := hw.Save(); err != nil {
		log.Fatal(err)
	}

	hw.Summarize(user.HWAll)
}

// Tracks lists available tracks.
func Tracks(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	client := api.NewClient(c)

	tracks, err := client.Tracks()
	if err != nil {
		log.Fatal(err)
	}

	curr := user.NewCurriculum(tracks)
	fmt.Println("\nActive language tracks:")
	curr.Report(user.TrackActive)
	fmt.Println("\nInactive language tracks:")
	curr.Report(user.TrackInactive)

	msg := `
Related commands:
    exercism fetch (see 'exercism help fetch')
    exercism list (see 'exercism help list')
	`
	fmt.Println(msg)
}

// Debug provides information about the user's environment and configuration.
func Debug(ctx *cli.Context) {
	defer fmt.Printf("\nIf you are having trouble and need to file a GitHub issue (https://github.com/exercism/exercism.io/issues) please include this information (except your API key. Keep that private).\n")

	client := http.Client{Timeout: 5 * time.Second}

	fmt.Printf("\n**** Debug Information ****\n")
	fmt.Printf("Exercism CLI Version: %s\n", ctx.App.Version)

	rel, err := fetchLatestRelease(client)
	if err != nil {
		log.Println("unable to fetch latest release: " + err.Error())
	} else {
		if rel.Version() != ctx.App.Version {
			defer fmt.Printf("\nA newer version of the CLI (%s) can be downloaded here: %s\n", rel.TagName, rel.Location)
		}
		fmt.Printf("Exercism CLI Latest Release: %s\n", rel.Version())
	}

	fmt.Printf("OS/Architecture: %s/%s\n", runtime.GOOS, runtime.GOARCH)
	fmt.Printf("Build OS/Architecture %s/%s\n", BuildOS, BuildARCH)
	if BuildARM != "" {
		fmt.Printf("Build ARMv%s\n", BuildARM)
	}

	dir, err := config.Home()
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("Home Dir: %s\n", dir)

	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}

	configured := true
	if _, err = os.Stat(c.File); err != nil {
		if os.IsNotExist(err) {
			configured = false
		} else {
			log.Fatal(err)
		}
	}

	if configured {
		fmt.Printf("Config file: %s\n", c.File)
		fmt.Printf("API Key: %s\n", c.APIKey)
	} else {
		fmt.Println("Config file: <not configured>")
		fmt.Println("API Key: <not configured>")
	}

	fmt.Printf("API: %s [%s]\n", c.API, pingURL(client, c.API))
	fmt.Printf("XAPI: %s [%s]\n", c.XAPI, pingURL(client, c.XAPI))
	fmt.Printf("Exercises Directory: %s\n", c.Dir)
}

// Unsubmit deletes an iteration from the api.
// If no iteration is specified, the most recent iteration
// is deleted.
func Unsubmit(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}

	if !c.IsAuthenticated() {
		log.Fatal(msgPleaseAuthenticate)
	}

	client := api.NewClient(c)
	if err := client.Unsubmit(); err != nil {
		log.Fatal(err)
	}

	fmt.Println("Your most recent submission was successfully deleted.")
}

// Fetch downloads exercism problems and writes them to disk.
func Fetch(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	client := api.NewClient(c)

	problems, err := client.Fetch(ctx.Args())
	if err != nil {
		log.Fatal(err)
	}

	submissionInfo, err := client.Submissions()
	if err != nil {
		log.Fatal(err)
	}

	if err := setSubmissionState(problems, submissionInfo); err != nil {
		log.Fatal(err)
	}

	dirs, err := filepath.Glob(filepath.Join(c.Dir, "*"))
	if err != nil {
		log.Fatal(err)
	}

	dirMap := make(map[string]bool)
	for _, dir := range dirs {
		dirMap[dir] = true
	}
	hw := user.NewHomework(problems, c)

	if len(ctx.Args()) == 0 {
		if err := hw.RejectMissingTracks(dirMap); err != nil {
			log.Fatal(err)
		}
	}

	if err := hw.Save(); err != nil {
		log.Fatal(err)
	}

	hw.Summarize(user.HWAll)
}

// Open uses the given track and problem and opens it in the browser.
func Open(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	client := api.NewClient(c)

	args := ctx.Args()
	if len(args) != 2 {
		fmt.Fprintf(os.Stderr, "Usage: exercism open TRACK_ID PROBLEM")
		os.Exit(1)
	}

	trackID := args[0]
	slug := args[1]
	submission, err := client.SubmissionURL(trackID, slug)
	if err != nil {
		log.Fatal(err)
	}

	url := submission.URL
	// Escape characters are not allowed by cmd/bash.
	switch runtime.GOOS {
	case "windows":
		url = strings.Replace(url, "&", `^&`, -1)
	default:
		url = strings.Replace(url, "&", `\&`, -1)
	}

	// The command to open the browser is OS-dependent.
	var cmd *exec.Cmd
	switch runtime.GOOS {
	case "darwin":
		cmd = exec.Command("open", url)
	case "freebsd", "linux", "netbsd", "openbsd":
		cmd = exec.Command("xdg-open", url)
	case "windows":
		cmd = exec.Command("cmd", "/c", "start", url)
	}

	if err := cmd.Run(); err != nil {
		log.Fatal(err)
	}
}

// Restore returns a user's solved problems.
func Restore(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}

	client := api.NewClient(c)

	problems, err := client.Restore()
	if err != nil {
		log.Fatal(err)
	}

	hw := user.NewHomework(problems, c)
	if err := hw.Save(); err != nil {
		log.Fatal(err)
	}
	hw.Summarize(user.HWNotSubmitted)
}

// Status is a command that allows a user to view their progress in a given
// language track.
func Status(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	args := ctx.Args()

	if len(args) != 1 {
		log.Fatal("Usage: exercism status TRACK_ID")
	}

	client := api.NewClient(c)
	status, err := client.Status(args[0])
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(status)
}

// Unsubmit deletes the most recent submission from the API.
func Unsubmit(ctx *cli.Context) {
	if len(ctx.Args()) > 0 {
		log.Fatal("\nThe unsubmit command does not take any arguments, it deletes the most recent submission.\n\nTo delete a different submission, you'll need to do it from the website.")
	}

	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}

	if !c.IsAuthenticated() {
		log.Fatal(msgPleaseAuthenticate)
	}

	client := api.NewClient(c)
	if err := client.Unsubmit(); err != nil {
		log.Fatal(err)
	}

	fmt.Println("Your most recent submission was successfully deleted.")
}

// Download returns specified iteration with its related problem.
func Download(ctx *cli.Context) {
	c, err := config.New(ctx.GlobalString("config"))
	if err != nil {
		log.Fatal(err)
	}
	client := api.NewClient(c)

	args := ctx.Args()
	if len(args) != 1 {
		msg := "Usage: exercism download SUBMISSION_ID"
		log.Fatal(msg)
	}

	submission, err := client.Download(args[0])
	if err != nil {
		log.Fatal(err)
	}

	path := filepath.Join(c.Dir, "solutions", submission.Username, submission.TrackID, submission.Slug, args[0])

	if err := os.MkdirAll(path, 0755); err != nil {
		log.Fatal(err)
	}

	for name, contents := range submission.ProblemFiles {
		if err := ioutil.WriteFile(fmt.Sprintf("%s/%s", path, name), []byte(contents), 0755); err != nil {
			log.Fatalf("Unable to write file %s: %s", name, err)
		}
	}

	for name, contents := range submission.SolutionFiles {
		filename := strings.TrimPrefix(name, strings.ToLower("/"+submission.TrackID+"/"+submission.Slug+"/"))
		if err := ioutil.WriteFile(fmt.Sprintf("%s/%s", path, filename), []byte(contents), 0755); err != nil {
			log.Fatalf("Unable to write file %s: %s", name, err)
		}
	}

	fmt.Printf("Successfully downloaded submission.\n\nThe submission can be viewed at:\n %s\n\n", path)

}