capture_time_rules.h

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/*
 * Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * DEALINGS IN THE SOFTWARE.
 */
 
#pragma once
 
#include <string>
#include <iostream>
#include <chrono>
#include <vector>
 
class CaptureTimeRules {
    typedef std::chrono::time_point<std::chrono::system_clock> t_time_pt;
    typedef std::chrono::duration<unsigned long long> t_duration;
public:
    void init(const std::string &path, unsigned default_second_interval);
 
    t_duration getCurrentTimeInterval();
 
    bool is_init_();
 
private:
    struct TimeRule {
        unsigned begin_time_hour;
        unsigned begin_time_minute;
        unsigned end_time_hour;
        unsigned end_time_minute;
        unsigned interval_between_frame_capture_seconds;
        bool end_time_is_next_day;
    };
 
    static bool isInTimeRule(const TimeRule &t, const tm &now);
 
    enum ParseResult{
        PARSE_RESULT_OK,
        PARSE_RESULT_BAD_CHARS,
        PARSE_RESULT_OUT_OF_BOUND,
        PARSE_RESULT_EMPTY
    };
 
    static ParseResult stoi_err_handling(unsigned& dst, const std::string &src, unsigned max_bound);
    static bool parsing_contains_error(const std::vector<ParseResult>& parse_res_list,
            const std::vector<std::string>& str_list, const std::string& curr_line,
                             unsigned line_number);
    bool single_time_rule_parser(const std::string &path, const std::string &line,
                                 unsigned line_number);
 
    std::chrono::seconds default_duration_;
    t_time_pt end_of_current_time_interval_;
    t_duration current_time_interval_;
    std::vector<TimeRule> rules_;
    bool init_ = false;
};