Function validIdentifier

x/secrets/identifiers.go:36–60

validIdentifier checks if an identifier is valid without using regexp or unicode. Rules: - Components separated by '/' - Each component is non-empty - Only characters A-Z, a-z, 0-9, '.', '_', '-' or ':' - No leading, trailing, or double slashes

(s string)

// - Only characters A-Z, a-z, 0-9, '.', '_', '-' or ':'
// - No leading, trailing, or double slashes
func validIdentifier(s string) bool {
	if len(s) == 0 {
		return false
	}

	componentLen := 0

	for _, r := range s {
		switch {
		case r == '/':
			if componentLen == 0 {
				// Empty component (leading, trailing, or double slash)
				return false
			}
			componentLen = 0
		case isValidRune(r):
			componentLen++
		default:
			return false
		}
	}

	// Final component must not be empty
	return componentLen > 0
}

func isValidRune(c rune) bool {
	return (c >= 'A' && c <= 'Z') ||