Function Equal

framework/dns/norm.go:62–72

Equal reports whether domain1 and domain2 are equivalent as defined by IDNA2008 (RFC 5890). TL;DR Use this instead of strings.EqualFold to compare domains. Equivalence for malformed A-label domains is defined using regular byte-string comparison with case-folding applied.

(domain1, domain2 string)

// Equivalence for malformed A-label domains is defined using regular
// byte-string comparison with case-folding applied.
func Equal(domain1, domain2 string) bool {
	// Short circult. If they are bit-equivalent, then they are also semantically
	// equivalent.
	if domain1 == domain2 {
		return true
	}

	uDomain1, _ := ForLookup(domain1)
	uDomain2, _ := ForLookup(domain2)
	return uDomain1 == uDomain2
}