public:

explicit Gen_spaces(int s) { m_spaces.assign(s, ' '); }

std::ostream &operator<<(std::ostream &os) { return os; }

friend std::ostream &operator<<(std::ostream &os, const Gen_spaces &gen);

private:

std::string m_spaces;

public:

Log(std::ostream &str, std::string logclass)

: std::ostream(nullptr), m_buffer(str, logclass) {

this->init(&m_buffer);

}

void enabled(bool s) { m_buffer.enabled(s); }

private:

class Log_buff : public std::stringbuf {

public:

Log_buff(std::ostream &str, std::string &logc)

: m_os(str), m_logc(logc), m_enabled(true) {}

void set_log_class(std::string &s) { m_logc = s; }

void enabled(bool s) { m_enabled = s; }

bool is_enabled() { return m_enabled; }

int sync() override;

private:

std::ostream &m_os;

std::string m_logc;

bool m_enabled;

};

Log_buff m_buffer;