func showUsage(store *storage.Storage, tx *storage.Tx, colour bool) error {
tagUsages, err := store.TagUsage(tx)
if err != nil {
return fmt.Errorf("could not retrieve tag usage: %v", err)
}
maxLength := 0
maxCountWidth := 0
for _, tagUsage := range tagUsages {
countWidth := int(math.Log(float64(tagUsage.FileCount)))
if countWidth > maxCountWidth {
maxCountWidth = countWidth
}
if len(tagUsage.Name) > maxLength {
maxLength = len(tagUsage.Name)
}
}
fmt.Println()
for _, tagUsage := range tagUsages {
fileCount := strconv.FormatUint(uint64(tagUsage.FileCount), 10)
if colour {
fileCount = ansi.Yellow(fileCount)
}
fmt.Printf(" %*s %*v\n", -maxLength, tagUsage.Name, maxCountWidth, fileCount)
}
return nil
}
