// emitProgress will keep emitting progress until a value is send into the
// returned channel.
func emitProgress(counter *util.CounterReader, total int64, logger *util.Logger) chan<- bool {
stop := make(chan bool)
go func(stop chan bool, counter *util.CounterReader, total int64) {
prev := int64(-1)
for {
current := counter.Count()
percentage := (100 * current) / total
select {
case <-stop:
logger.Infof("\rDownloading: %3d%%\n", percentage)
return
default:
if percentage != prev {
logger.Infof("\rDownloading: %3d%%", percentage)
prev = percentage
}
time.Sleep(1 * time.Second)
}
}
}(stop, counter, total)
return stop
}
