Struct progressTracker

io.go:18–26

progressTracker helps display loading progress

// progressTracker helps display loading progress
type progressTracker struct {
	total        int64
	current      int64
	lastUpdate   time.Time
	updateEvery  int
	lineCount    int
	showProgress bool
	startTime    time.Time
}

func newProgressTracker(total int64, showProgress bool) *progressTracker {
	return &progressTracker{