package meta import ( "encoding/json" "regexp" "strings" "github.com/photoprism/photoprism/pkg/fs" "github.com/photoprism/photoprism/pkg/txt" ) var UnwantedDescriptions = map[string]bool{ "OLYMPUS DIGITAL CAMERA": true, // Olympus "SAMSUNG": true, // Samsung "rhdr": true, // Huawei "hdrpl": true, "fbt": true, "mon": true, "nor": true, "dav": true, "mde": true, "mde_soft": true, "edf": true, "btfmdn": true, "btf": true, "btfhdr": true, "frem": true, "oznor": true, "rpt": true, "burst": true, "sdr_HDRB": true, "cof": true, "qrf": true, } var LowerCaseRegexp = regexp.MustCompile("[a-z0-9_\\-]+") // SanitizeString removes unwanted character from an exif value string. func SanitizeString(s string) string { if s == "" { return "" } s = strings.TrimSpace(s) return strings.Replace(s, "\"", "", -1) } // SanitizeUID normalizes unique IDs found in XMP or Exif metadata. func SanitizeUID(value string) string { value = SanitizeString(value) if start := strings.LastIndex(value, ":"); start != -1 { value = value[start+1:] } // Not a unique ID? if len(value) < 15 || len(value) > 36 { value = "" } return strings.ToLower(value) } // SanitizeTitle normalizes titles and removes unwanted information. func SanitizeTitle(title string) string { s := SanitizeString(title) if s == "" { return "" } result := fs.StripKnownExt(s) if fs.IsGenerated(result) || txt.IsTime(result) { result = "" } else if result == s { // Do nothing. } else if found := LowerCaseRegexp.FindString(result); found != result { result = strings.ReplaceAll(strings.ReplaceAll(result, "_", " "), " ", " ") } else if formatted := txt.FileTitle(s); formatted != "" { result = formatted } else { result = txt.Title(strings.ReplaceAll(result, "-", " ")) } return result } // SanitizeDescription normalizes descriptions and removes unwanted information. func SanitizeDescription(s string) string { s = SanitizeString(s) if s == "" { return "" } else if remove := UnwantedDescriptions[s]; remove { s = "" } else if strings.HasPrefix(s, "DCIM\\") && !strings.Contains(s, " ") { s = "" } return s } // SanitizeMeta normalizes metadata fields that may contain JSON arrays like keywords and subject. func SanitizeMeta(s string) string { if s == "" { return "" } else if strings.HasPrefix(s, "[") && strings.HasSuffix(s, "]") { var words []string if err := json.Unmarshal([]byte(s), &words); err != nil { return s } s = strings.Join(words, ", ") } else { s = SanitizeString(s) } return s }