progress_bar.hpp

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/***************************************************************************
*                                                                          *
*   Copyright (C) 2018 by David B. Blumenthal                              *
*                                                                          *
*   This file is part of GEDLIB.                                           *
*                                                                          *
*   GEDLIB is free software: you can redistribute it and/or modify it      *
*   under the terms of the GNU Lesser General Public License as published  *
*   by the Free Software Foundation, either version 3 of the License, or   *
*   (at your option) any later version.                                    *
*                                                                          *
*   GEDLIB is distributed in the hope that it will be useful,              *
*   but WITHOUT ANY WARRANTY; without even the implied warranty of         *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the           *
*   GNU Lesser General Public License for more details.                    *
*                                                                          *
*   You should have received a copy of the GNU Lesser General Public       *
*   License along with GEDLIB. If not, see <http://www.gnu.org/licenses/>. *
*                                                                          *
***************************************************************************/

#ifndef SRC_ENV_PROGRESS_BAR_HPP_
#define SRC_ENV_PROGRESS_BAR_HPP_

#include <iostream>
#include <iomanip>
#include <chrono>

namespace ged {

class ProgressBar {

public:

    friend std::ostream & operator<<(std::ostream &, const ProgressBar &);

    ProgressBar(std::size_t num_tasks);

    void increment();

    void reset();

private:

    std::size_t num_solved_tasks_;

    const std::size_t num_tasks_;

    const std::chrono::high_resolution_clock::time_point start_time_;
};

std::ostream &
operator<<(std::ostream & os, const ProgressBar & progress_bar);

}

#include "progress_bar.ipp"

#endif /* SRC_ENV_PROGRESS_BAR_HPP_ */