Class OutStream

include/cli/cli.h:76–109

this class provides a global output stream

    // this class provides a global output stream
    class OutStream : public std::basic_ostream<char>, public std::streambuf
    {
    public:
        OutStream() : std::basic_ostream<char>(this)
        {
        }

        // std::streambuf overrides
        std::streamsize xsputn(const char* s, std::streamsize n) override
        {
            for (auto os: ostreams)
                os->rdbuf()->sputn(s, n);
            return n;
        }
        int overflow(int c) override
        {
            for (auto os: ostreams)
                *os << static_cast<char>(c);
            return c;
        }            

        void Register(std::ostream& o)
        {
            ostreams.push_back(&o);
        }
        void UnRegister(std::ostream& o)
        {
            ostreams.erase(std::remove(ostreams.begin(), ostreams.end(), &o), ostreams.end());
        }

    private:

        std::vector<std::ostream*> ostreams;
    };
    
    // forward declarations
    class Menu;