Exemplo n.º 1
0
// Fetch http file url to destination dest, with or without progress.
func FetchHTTPFile(url string, dest string, progress bool) (err error) {
	gologit.Debugf("Creating file: %s\n", dest)
	out, err := os.Create(dest)
	if err != nil {
		return err
	}
	defer out.Close()

	var r io.Reader

	gologit.Debugf("Fetching url: %s\n", url)
	resp, err := http.Get(url)
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return fmt.Errorf("Server return non-200 status: %v", resp.Status)
	}

	msgPrefix := fmt.Sprintf("%s: ", path.Base(dest))
	var bar *pb.ProgressBar
	i, _ := strconv.Atoi(resp.Header.Get("Content-Length"))
	if i > 0 && progress {
		bar = pb.New(i).Prefix(msgPrefix).SetUnits(pb.U_BYTES)
		bar.ShowSpeed = true
		bar.RefreshRate = time.Millisecond * 700
		bar.ShowFinalTime = false
		bar.ShowTimeLeft = false
		bar.Start()
		defer bar.Finish()
		r = bar.NewProxyReader(resp.Body)
	} else {
		r = resp.Body
	}
	_, err = io.Copy(out, r)
	return err
}