Function parseBinary

binary.go:31–59

parseBinary parses as defined in https://httpwg.org/specs/rfc9651.html#parse-binary.

(s *scanner)

// parseBinary parses as defined in
// https://httpwg.org/specs/rfc9651.html#parse-binary.
func parseBinary(s *scanner) ([]byte, error) {
	if s.eof() || s.data[s.off] != ':' {
		return nil, &UnmarshalError{s.off, ErrInvalidBinaryFormat}
	}
	s.off++

	start := s.off

	for !s.eof() {
		c := s.data[s.off]
		if c == ':' {
			// base64decode
			decoded, err := base64.StdEncoding.DecodeString(s.data[start:s.off])
			if err != nil {
				return nil, &UnmarshalError{s.off, err}
			}
			s.off++

			return decoded, nil
		}

		if !isAlpha(c) && !isDigit(c) && c != '+' && c != '/' && c != '=' {
			return nil, &UnmarshalError{s.off, ErrInvalidBinaryFormat}
		}
		s.off++
	}

	return nil, &UnmarshalError{s.off, ErrInvalidBinaryFormat}
}