func progressBarForReader(out io.Writer, r io.Reader) (*pb.ProgressBar, *pb.Reader) {
// setup bar reader
// TODO: get total length of files
bar := pb.New(0).SetUnits(pb.U_BYTES)
bar.Output = out
barR := bar.NewProxyReader(r)
return bar, barR
}
func main() {
count := 5000
bar := pb.New(count)
// show percents (by default already true)
bar.ShowPercent = true
// show bar (by default already true)
bar.ShowPercent = true
// no need counters
bar.ShowCounters = true
bar.ShowTimeLeft = true
// and start
bar.Start()
for i := 0; i < count; i++ {
bar.Increment()
time.Sleep(time.Millisecond)
}
bar.FinishPrint("The End!")
}
func main() {
// check args
if len(os.Args) < 3 {
printUsage()
return
}
sourceName, destName := os.Args[1], os.Args[2]
// check source
var source io.Reader
var sourceSize int64
if strings.HasPrefix(sourceName, "http://") {
// open as url
resp, err := http.Get(sourceName)
if err != nil {
fmt.Printf("Can't get %s: %v\n", sourceName, err)
return
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
fmt.Printf("Server return non-200 status: %v\n", resp.Status)
return
}
i, _ := strconv.Atoi(resp.Header.Get("Content-Length"))
sourceSize = int64(i)
source = resp.Body
} else {
// open as file
s, err := os.Open(sourceName)
if err != nil {
fmt.Printf("Can't open %s: %v\n", sourceName, err)
return
}
defer s.Close()
// get source size
sourceStat, err := s.Stat()
if err != nil {
fmt.Printf("Can't stat %s: %v\n", sourceName, err)
return
}
sourceSize = sourceStat.Size()
source = s
}
// create dest
dest, err := os.Create(destName)
if err != nil {
fmt.Printf("Can't create %s: %v\n", destName, err)
return
}
defer dest.Close()
// create bar
bar := pb.New(int(sourceSize)).SetUnits(pb.U_BYTES).SetRefreshRate(time.Millisecond * 10)
bar.ShowSpeed = true
bar.Start()
// create multi writer
writer := io.MultiWriter(dest, bar)
// and copy
io.Copy(writer, source)
bar.Finish()
}
if err != nil {
res.SetError(err, cmds.ErrNormal)
return
}
res.SetLength(length)
reader := io.MultiReader(readers...)
res.SetOutput(reader)
},
PostRun: func(req cmds.Request, res cmds.Response) {
if res.Length() < progressBarMinSize {
return
}
bar := pb.New(int(res.Length())).SetUnits(pb.U_BYTES)
bar.Output = res.Stderr()
bar.Start()
reader := bar.NewProxyReader(res.Output().(io.Reader))
res.SetOutput(&clearlineReader{reader, res.Stderr()})
},
}
func cat(ctx context.Context, node *core.IpfsNode, paths []string) ([]io.Reader, uint64, error) {
readers := make([]io.Reader, 0, len(paths))
length := uint64(0)
for _, fpath := range paths {
read, err := coreunix.Cat(node, fpath)
if err != nil {
return nil, 0, err