kubernetes/vendor/github.com/pquerna/cachecontrol/cacheobject/lex.go

func isSeparator(c byte) bool { … }

func isCtl(c byte) bool { … }

func isChar(c byte) bool { … }

func isAnyText(c byte) bool { … }

func isQdText(c byte) bool { … }

func isToken(c byte) bool { … }

// Valid escaped sequences are not specified in RFC 2616, so for now, we assume
// that they coincide with the common sense ones used by GO. Malformed
// characters should probably not be treated as errors by a robust (forgiving)
// parser, so we replace them with the '?' character.
func httpUnquotePair(b byte) byte { … }

// raw must begin with a valid quoted string. Only the first quoted string is
// parsed and is unquoted in result. eaten is the number of bytes parsed, or -1
// upon failure.
func httpUnquote(raw string) (eaten int, result string) { … }