package metadata import ( "regexp" "strings" ) type addedExtractor struct { re *regexp.Regexp } func (e addedExtractor) Matches(line string) bool { return e.re.MatchString(line) } func (e addedExtractor) Extract(metadata *BackupLogMetadata, line string) { // Sample line: "Added to the repo: 0 B" metadata.AddedSize = strings.TrimSpace(e.re.ReplaceAllString(line, "")) } func NewAddedExtractor() MetadatExtractor { return addedExtractor{regexp.MustCompile(`(?i)^Added to the repo:`)} }