func Compare(x, y string) int { return compare(stripGo(x), stripGo(y)) }

// IsValid reports whether the version x is valid.
func IsValid(x string) bool { return isValid(stripGo(x)) }

// stripGo converts from a "go1.21" version to a "1.21" version.
// If v does not start with "go", stripGo returns the empty string (a known invalid version).
func stripGo(v string) string {
	v, _, _ = strings.Cut(v, "-") // strip -bigcorp suffix.

apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: invalid-filter-wrong-field
spec:
  rules:
  - filters:
    - type: RequestHeaderModifier
      requestRedirect: 

apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: invalid-filter-duplicate-header
spec:
  rules:
  - filters:
    - type: RequestHeaderModifier
      requestHeaderModifier:
        remove:
        - foo

apiVersion: gateway.networking.k8s.io/v1beta1
kind: HTTPRoute
metadata:
  name: invalid-path-alphanum-specialchars-mix
spec:
  rules:
  - matches:
    - path:
        type: PathPrefix

// contain release numbers ("go1.20.1" is not a valid goVersion).
type goVersion string

// asGoVersion returns v as a goVersion (e.g., "go1.20.1" becomes "go1.20").
// If v is not a valid Go version, the result is the empty string.
func asGoVersion(v string) goVersion {
	return goVersion(version.Lang(v))
}

// isValid reports whether v is a valid Go version.
func (v goVersion) isValid() bool {
	return v != ""
}

Carlos Amedee <******@****.***> 1715265901 -0400

Anis Eleuch <******@****.***> 1701941636 -0800

Anis Eleuch <******@****.***> 1701941636 -0800

// contain release numbers ("go1.20.1" is not a valid goVersion).
type goVersion string

// asGoVersion returns v as a goVersion (e.g., "go1.20.1" becomes "go1.20").
// If v is not a valid Go version, the result is the empty string.
func asGoVersion(v string) goVersion {
	return goVersion(version.Lang(v))
}

// isValid reports whether v is a valid Go version.
func (v goVersion) isValid() bool {
	return v != ""
}

Monis Khan <******@****.***> 1715877522 -0400