Golang ProgressBar.ShowCounters方法代碼示例

func customizeBar(bar *pb.ProgressBar) {
	bar.ShowCounters = true
	bar.ShowTimeLeft = false
	bar.ShowSpeed = true
	bar.SetMaxWidth(80)
	bar.SetUnits(pb.U_BYTES)
}

// CheckMetadata downloads the metadata about all of the files currently
// stored on Drive and compares it with the local cache.
func (gd *GDrive) CheckMetadata(filename string, report func(string)) error {
	idToFile, err := gd.getIdToFile(filename)
	if err != nil {
		return err
	}

	// This will almost certainly take a while, so put up a progress bar.
	var bar *pb.ProgressBar
	if !gd.quiet {
		bar = pb.New(len(idToFile))
		bar.ShowBar = true
		bar.ShowCounters = false
		bar.Output = os.Stderr
		bar.Prefix("Checking metadata cache: ")
		bar.Start()
	}

	err = gd.runQuery("trashed=false", func(f *drive.File) {
		if file, ok := idToFile[f.Id]; ok {
			df := newFile(f.Title, f)
			if !filesEqual(df, file) {
				report(fmt.Sprintf("%s: metadata mismatch.\nLocal: %+v\nDrive: %+v",
					file.Path, file, df))
			}
			if bar != nil {
				bar.Increment()
			}
			delete(idToFile, f.Id)
		} else {
			// It'd be preferable to have "sharedWithMe=false" included in
			// the query string above, but the combination of that with
			// "trashed=false" seems to lead to no results being returned.
			if f.Shared == false {
				report(fmt.Sprintf("%s: found on Drive, not in local cache [%+v]",
					f.Title, f))
			}
		}
	})

	for _, f := range idToFile {
		report(fmt.Sprintf("%s: found in local cache, not on Drive [%+v]",
			f.Path, f))
	}

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

// processSystemArchives processes archives for given system
func (h *Harvester) processSystemArchives(s *system.System, archives []string) error {
	var bar *pb.ProgressBar

	nb := len(archives)

	// extract archives
	if !s.Options.Quiet {
		fmt.Printf("[%s] Extracting %v archive(s)\n", s.Infos.Name, nb)

		if !s.Options.Debug {
			bar = pb.StartNew(nb)
			bar.ShowCounters = true
			bar.ShowPercent = false
			bar.ShowTimeLeft = true
			bar.SetMaxWidth(80)
		}
	}

	for _, archive := range archives {
		if !s.Options.Quiet && !s.Options.Debug {
			bar.Increment()
		}

		if err := s.ProcessArchive(archive, h.Options.Output); err != nil {
			return err
		}
	}

	if !s.Options.Quiet && !s.Options.Debug {
		bar.Finish()
		fmt.Printf("[%s] Processed %v files (skipped: %v)\n", s.Infos.Name, s.Processed, s.Skipped)
	}

	fmt.Printf("[%s] Selected %v games\n", s.Infos.Name, len(s.Games))

	return nil
}

func (gd *GDrive) getMetadataChanges(svc *drive.Service, startChangeId int64,
	changeChan chan<- []*drive.Change, errorChan chan<- error) {
	var about *drive.About
	var err error

	// Get the Drive About information in order to figure out how many
	// changes we need to download to get up to date.
	for try := 0; ; try++ {
		about, err = svc.About.Get().Do()
		if err == nil {
			break
		} else {
			err = gd.tryToHandleDriveAPIError(err, try)
		}
		if err != nil {
			errorChan <- err
			return
		}
	}

	// Don't clutter the output with a progress bar unless it looks like
	// downloading changes may take a while.
	// TODO: consider using timer.AfterFunc to put up the progress bar if
	// we're not done after a few seconds?  It's not clear if this is worth
	// the trouble.
	var bar *pb.ProgressBar
	numChanges := about.LargestChangeId - startChangeId
	if numChanges > 1000 && !gd.quiet {
		bar = pb.New64(numChanges)
		bar.ShowBar = true
		bar.ShowCounters = false
		bar.Output = os.Stderr
		bar.Prefix("Updating metadata cache: ")
		bar.Start()
	}

	pageToken := ""
	try := 0
	// Keep asking Drive for more changes until we get through them all.
	for {
		// Only ask for the fields in the drive.Change structure that we
		// actually to be filled in to save some bandwidth...
		fields := []googleapi.Field{"nextPageToken",
			"items/id", "items/fileId", "items/deleted",
			"items/file/id", "items/file/parents", "items/file/title",
			"items/file/fileSize", "items/file/mimeType", "items/file/properties",
			"items/file/modifiedDate", "items/file/md5Checksum", "items/file/labels"}
		q := svc.Changes.List().MaxResults(1000).IncludeSubscribed(false).Fields(fields...)
		if startChangeId >= 0 {
			q = q.StartChangeId(startChangeId + 1)
		}
		if pageToken != "" {
			q = q.PageToken(pageToken)
		}

		r, err := q.Do()
		if err != nil {
			err = gd.tryToHandleDriveAPIError(err, try)
			if err != nil {
				errorChan <- err
				return
			}
			try++
			continue
		}

		// Success. Reset the try counter in case we had errors leading up
		// to this.
		try = 0

		if len(r.Items) > 0 {
			// Send the changes along to the goroutine that's updating the
			// local cache.
			changeChan <- r.Items

			if bar != nil {
				bar.Set(int(r.Items[len(r.Items)-1].Id - startChangeId))
			}
		}

		pageToken = string(r.NextPageToken)
		if pageToken == "" {
			break
		}
	}
	// Signal that no more changes are coming.
	close(changeChan)

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

	gd.debug("Done updating metadata from Drive")
}

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
}

func main() {
	flag.Usage = usage

	help := flag.Bool("help", false, "show this message")
	version := flag.Bool("version", false, "show version")

	failpath := flag.String("faildir", "", "dir where failed torrentzips should be copied")

	flag.Parse()

	if *help {
		flag.Usage()
		os.Exit(0)
	}

	if *version {
		fmt.Fprintf(os.Stdout, "%s version %s, Copyright (c) 2013 Uwe Hoffmann. All rights reserved.\n", os.Args[0], versionStr)
		os.Exit(0)
	}

	if *failpath == "" {
		flag.Usage()
		os.Exit(0)
	}

	cv := new(countVisitor)

	for _, name := range flag.Args() {
		fmt.Fprintf(os.Stdout, "initial scan of %s to determine amount of work\n", name)

		err := filepath.Walk(name, cv.visit)
		if err != nil {
			fmt.Fprintf(os.Stderr, "failed to count in dir %s: %v\n", name, err)
			os.Exit(1)
		}
	}

	mg := int(cv.numBytes / megabyte)

	fmt.Fprintf(os.Stdout, "found %d files and %d MB to do. starting work...\n", cv.numFiles, mg)

	var byteProgress *pb.ProgressBar

	if mg > 10 {
		pb.BarStart = "MB ["

		byteProgress = pb.New(mg)
		byteProgress.RefreshRate = 5 * time.Second
		byteProgress.ShowCounters = true
		byteProgress.Start()
	}

	inwork := make(chan *workUnit)

	sv := &scanVisitor{
		inwork: inwork,
	}

	wg := new(sync.WaitGroup)
	wg.Add(cv.numFiles)

	for i := 0; i < 8; i++ {
		worker := &testWorker{
			byteProgress: byteProgress,
			failpath:     *failpath,
			inwork:       inwork,
			wg:           wg,
		}

		go worker.run()
	}

	for _, name := range flag.Args() {
		err := filepath.Walk(name, sv.visit)
		if err != nil {
			fmt.Fprintf(os.Stderr, "failed to scan dir %s: %v\n", name, err)
			os.Exit(1)
		}
	}

	wg.Wait()
	close(inwork)

	if byteProgress != nil {
		byteProgress.Set(int(byteProgress.Total))
		byteProgress.Finish()
	}

	fmt.Fprintf(os.Stdout, "Done.\n")
}

					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)
			}