func addUser()

in cmd/git-sync/main.go [619:642]

• 21 lines of code
• 5 McCabe index (conditional complexity)

func addUser() error {
	// Skip if the UID already exists. The Dockerfile already adds the default UID/GID.
	if _, err := user.LookupId(strconv.Itoa(os.Getuid())); err == nil {
		return nil
	}
	home := os.Getenv("HOME")
	if home == "" {
		cwd, err := os.Getwd()
		if err != nil {
			return fmt.Errorf("can't get working directory and $HOME is not set: %w", err)
		}
		home = cwd
	}

	f, err := os.OpenFile("/etc/passwd", os.O_APPEND|os.O_WRONLY, 0644)
	if err != nil {
		return err
	}
	defer f.Close()

	str := fmt.Sprintf("git-sync:x:%d:%d::%s:/sbin/nologin\n", os.Getuid(), os.Getgid(), home)
	_, err = f.WriteString(str)
	return err
}