mgl_chrono_defs.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_CHRONO_DEFS_H_1614107959
#define INCGUARD_MGL_CHRONO_DEFS_H_1614107959
 
#include <cstdint>
#include <ctime>
 
#include <mgl/mgl_environment.h>
 
namespace MGL::System
{
using EpochTime = time_t;
static_assert(sizeof(EpochTime) >= 8);    // 64ビット以上を必須にする
 
struct DateTime
{
    uint16_t year;             
    uint8_t month;             
    uint8_t day;               
    uint8_t hour;              
    uint8_t minute;            
    uint8_t second;            
    int32_t timeDifference;    
 
    constexpr DateTime() noexcept
        : year(1970)
        , month(1)
        , day(1)
        , hour(0)
        , minute(0)
        , second(0)
        , timeDifference(0)
    {}
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    DateTime(EpochTime epochTime, int32_t inTimeDifference = 0) noexcept
        : timeDifference(inTimeDifference)
    {
        epochTime += inTimeDifference;
 
        // TODO:
#if defined(MGL_TARGET_WIN32)
        struct tm temp;
        gmtime_s(&temp, &epochTime);
        struct tm *time = &temp;
#else
        struct tm *time = gmtime(&epochTime);
#endif
 
        year = static_cast<uint16_t>(time->tm_year + 1900);
        month = static_cast<uint8_t>(time->tm_mon + 1);
        day = static_cast<uint8_t>(time->tm_mday);
        hour = static_cast<uint8_t>(time->tm_hour);
        minute = static_cast<uint8_t>(time->tm_min);
        second = static_cast<uint8_t>(time->tm_sec);
    }
};
 
using TickTime = uint64_t;
 
}    // namespace MGL::System
 
#endif    // INCGUARD_MGL_CHRONO_DEFS_H_1614107959
 
// vim: et ts=4 sw=4 sts=4