func showStatistics(store *storage.Storage, tx *storage.Tx, colour bool) error {
tagCount, err := store.TagCount(tx)
if err != nil {
return fmt.Errorf("could not retrieve tag count: %v", err)
}
valueCount, err := store.ValueCount(tx)
if err != nil {
return fmt.Errorf("could not retrieve value count: %v", err)
}
fileCount, err := store.FileCount(tx)
if err != nil {
return fmt.Errorf("could not retrieve file count: %v", err)
}
fileTagCount, err := store.FileTagCount(tx)
if err != nil {
return fmt.Errorf("could not retrieve taggings count: %v", err)
}
var averageTagsPerFile float32
if fileCount > 0 {
averageTagsPerFile = float32(fileTagCount) / float32(fileCount)
}
var averageFilesPerTag float32
if tagCount > 0 {
averageFilesPerTag = float32(fileTagCount) / float32(tagCount)
}
fmt.Println()
printInfo("Tags", tagCount, colour)
printInfo("Values", valueCount, colour)
printInfo("Files", fileCount, colour)
printInfo("Taggings", fileTagCount, colour)
printInfof("Mean tags per file", "%1.2f", averageTagsPerFile, colour)
printInfof("Mean files per tag", "%1.2f", averageFilesPerTag, colour)
return nil
}