func readErrorNumbers()

in auparse/mk_audit_exit_codes.go [103:143]

36 lines of code
7 McCabe index (conditional complexity)


func readErrorNumbers() ([]ErrorNumber, error) {
	cmd := exec.Command("gcc", "-E", "-dD", "-")
	cmd.Stdin = bytes.NewBufferString(includeErrno)
	out, err := cmd.Output()
	if err != nil {
		return nil, err
	}

	errorToNum := map[string]int{}
	s := bufio.NewScanner(bytes.NewReader(out))
	for s.Scan() {
		matches := errnoDefRegex.FindStringSubmatch(s.Text())
		if len(matches) != 3 {
			continue
		}
		errno, err := strconv.Atoi(matches[2])
		if err != nil {
			errorToNum[matches[1]] = -1
			continue
		}

		errorToNum[matches[1]] = errno
	}

	var errnos []ErrorNumber
	for name, value := range errorToNum {
		errnos = append(errnos, ErrorNumber{
			Name:  name,
			Value: value,
		})
	}

	sort.Slice(errnos, func(i, j int) bool {
		if errnos[i].Value == errnos[j].Value {
			return errnos[i].Name < errnos[j].Name
		}
		return errnos[i].Value < errnos[j].Value
	})

	return errnos, nil
}