Golang ProgressBar.NotPrint方法代碼示例

func install(l, version string) error {
	var currentStep lang.Step
	var bar *pb.ProgressBar
	var process *Process
	fmt.Printf("Installing %[email protected]%s\n", l, version)
	err := service.Install(l, version, binaryFlag, func(step lang.Step, progress, total int64) {

		if currentStep != step {
			if bar != nil {
				bar.NotPrint = true
				bar.Finish()
				fmt.Printf(ascii2.EraseLine)
				bar = nil
			}

			if process != nil {
				process.Done("")
				process = nil
			}

			if total > 0 {
				bar = pb.New64(total).Prefix("  " + stepToMsg(step) + "\t\t")
				bar.SetWidth(40)
				bar.ShowCounters = false
				//fmt.Printf("%s\n", step)
				//bar.NotPrint = true
				bar.Start()
				currentStep = step

			} else {
				process := &Process{Msg: stepToMsg(step) + "\t\t"}
				process.Start()
			}

		}
		if bar != nil {
			bar.Set64(progress)
		}

	})

	if bar != nil {
		bar.NotPrint = true
		bar.Finish()

		fmt.Printf(ascii2.EraseLines(2) + ascii2.EraseLine + fmt.Sprintf("  %s installed", l))
	}

	if process != nil {
		process.Done("\n")
	}
	//fmt.Printf(ascii2.EraseLine + ascii2.CursorUp(1) + ascii2.EraseLine)

	if err != nil {
		fmt.Printf("Could not install %[email protected]%s: \n  %s\n", l, version, err.Error())
	} else {
		fmt.Printf("  %[email protected]%s installed!\n\n", l, version)
	}

	return err
}

// PostMultipartP posts a multipart message in the MIME internet format with a callback function with a string stating the upload Progress.
func (c *Client) PostMultipartP(path string, files map[string][]byte, params Params, out interface{}, callback func(s string)) error {
	body := &bytes.Buffer{}

	writer := multipart.NewWriter(body)

	for name, source := range files {
		part, err := writer.CreateFormFile(name, "source.tgz")
		if err != nil {
			return err
		}

		_, err = io.Copy(part, bytes.NewReader(source))
		if err != nil {
			return err
		}
	}

	for name, value := range params {
		writer.WriteField(name, value)
	}

	err := writer.Close()
	if err != nil {
		return err
	}

	var bodyReader io.Reader
	bodyReader = body

	var bar *pb.ProgressBar

	if callback != nil {
		bar = pb.New(body.Len()).SetUnits(pb.U_BYTES)
		bar.NotPrint = true
		bar.ShowBar = false
		bar.Callback = callback

		bar.Start()
		bodyReader = bar.NewProxyReader(body)
	}

	req, err := c.request("POST", path, bodyReader)

	if err != nil {
		return err
	}

	req.SetBasicAuth("convox", string(c.Password))

	req.Header.Set("Content-Type", writer.FormDataContentType())

	res, err := c.client().Do(req)

	if err != nil {
		return err
	}

	defer res.Body.Close()

	if err := responseError(res); err != nil {
		return err
	}

	data, err := ioutil.ReadAll(res.Body)

	if err != nil {
		return err
	}

	if out != nil {
		err = json.Unmarshal(data, out)

		if err != nil {
			return err
		}
	}

	if callback != nil {
		bar.Finish()
	}

	return nil
}

Cobra is a CLI library for Go that empowers applications.
This application is a tool to generate the needed files
to quickly create a Cobra application.`,
	Run: func(cmd *cobra.Command, args []string) {
		// TODO: Work your own magic here
		fmt.Println("test called")

		var currentStep lang.Step
		var bar *pb.ProgressBar
		var process *Process

		testSteps(func(step lang.Step, progress, total int64) {
			if currentStep != step {

				if bar != nil {
					bar.NotPrint = true
					bar.Finish()
					fmt.Printf(ascii2.EraseLine)

					bar = nil
				}

				if process != nil {
					process.Done("")
					process = nil
				}

				if total > 0 {
					bar = pb.New64(total).Prefix("  " + stepToMsg(step) + "\t\t")
					bar.SetWidth(40)
					bar.ShowCounters = false