photoprism/pkg/rnd/uuid.go

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package rnd
import (
"strings"
uuid "github.com/satori/go.uuid"
)
// UUID returns a standard, random UUID as string.
func UUID() string {
return uuid.NewV4().String()
}
// Returns true if the string looks like a standard UUID.
func IsUUID(s string) bool {
return len(s) == 36 && IsHex(s)
}
// SanitizeUUID normalizes UUIDs found in XMP or Exif metadata.
func SanitizeUUID(s string) string {
if s == "" {
return ""
}
s = strings.Replace(strings.TrimSpace(s), "\"", "", -1)
if start := strings.LastIndex(s, ":"); start != -1 {
s = s[start+1:]
}
if !IsUUID(s) {
return ""
}
return strings.ToLower(s)
}