Class Colorize

src/backward.h:3971–4006

} // namespace Color

class Colorize {
public:
    Colorize(std::ostream& os) : _os(os), _reset(false), _enabled(false) {}

    void activate(ColorMode::type mode) { _enabled = mode == ColorMode::always; }

    void activate(ColorMode::type mode, FILE* fp) { activate(mode, fileno(fp)); }

    void set_color(Color::type ccode)
    {
        if (!_enabled)
            return;

        // I assume that the terminal can handle basic colors. Seriously I
        // don't want to deal with all the termcap shit.
        _os << "\033[" << static_cast<int>(ccode) << "m";
        _reset = (ccode != Color::reset);
    }

    ~Colorize()
    {
        if (_reset) {
            set_color(Color::reset);
        }
    }

private:
    void activate(ColorMode::type mode, int fd)
    {
        activate(mode == ColorMode::automatic && isatty(fd) ? ColorMode::always : mode);
    }

    std::ostream& _os;
    bool _reset;
    bool _enabled;
};

#else // ndef BACKWARD_SYSTEM_LINUX