Function SanitizeIdentifierName

pkg/stringutil/sanitize.go:218–235

SanitizeIdentifierName sanitizes a name for use as a programming-language identifier by replacing disallowed characters with underscores. Use this function for code identifiers (for example JavaScript and Python variable names). It preserves [a-zA-Z0-9_] plus optional extraAllowed runes and prepend

(name string, extraAllowed func(rune) bool)

// For workflow artifact and user-agent identifiers, use workflow.SanitizeArtifactIdentifier
// instead, which produces hyphen-separated lowercase output.
func SanitizeIdentifierName(name string, extraAllowed func(rune) bool) string {
	result := strings.Map(func(r rune) rune {
		if (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z') || (r >= '0' && r <= '9') || r == '_' {
			return r
		}
		if extraAllowed != nil && extraAllowed(r) {
			return r
		}
		return '_'
	}, name)

	// Ensure it doesn't start with a number
	if result != "" && result[0] >= '0' && result[0] <= '9' {
		result = "_" + result
	}

	return result
}

// SanitizeParameterName converts a parameter name to a safe JavaScript identifier
// by replacing non-alphanumeric characters with underscores.