Средства и методы разработки

Заголовочник date.h компилируется с Libc++, если сделать undef HAS_STRING_VIEW. Давно хотел поиграться с датами: version.h 

#pragma once

#ifndef _VERSION_H_

#define _VERSION_H_

#include <stdint.h>

#include <date.h>

// Hours.

#define HOURHI ( __TIME__[0] == ' ' ? 0 : __TIME__[0] - '0' )

#define HOURLO ( __TIME__[1] == ' ' ? 0 : __TIME__[1] - '0' )

#define HOUR ( HOURHI * 10u + HOURLO )

// Minutes.

#define MINHI ( __TIME__[3] == ' ' ? 0 : __TIME__[3] - '0' )

#define MINLO ( __TIME__[4] == ' ' ? 0 : __TIME__[4] - '0' )

#define MIN ( MINHI * 10u + MINLO )

// Seconds.

#define SECHI ( __TIME__[6] == ' ' ? 0 : __TIME__[6] - '0' )

#define SECLO ( __TIME__[7] == ' ' ? 0 : __TIME__[7] - '0' )

#define SEC ( SECHI * 10u + SECLO )

// Day.

#define DAYHI ( __DATE__[4] == ' ' ? 0 : __DATE__[4] - '0' )

#define DAYLO ( __DATE__[5] - '0' )

#define DAY ( DAYHI * 10u + DAYLO )

// Month.

#define MON (\

__DATE__ [2] == 'n' ? (__DATE__ [1] == 'a' ? 1u : 6u) \

: __DATE__ [2] == 'b' ? 2u \

: __DATE__ [2] == 'r' ? (__DATE__ [0] == 'M' ? 3u : 4u) \

: __DATE__ [2] == 'y' ? 5u \

: __DATE__ [2] == 'l' ? 7u \

: __DATE__ [2] == 'g' ? 8u \

: __DATE__ [2] == 'p' ? 9u \

: __DATE__ [2] == 't' ? 10u \

: __DATE__ [2] == 'v' ? 11u \

: 12u)

// Year.

#define YEARHI ( ( ( __DATE__[7] - '0' ) * 10u ) + ( __DATE__[8] - '0' ) )

#define YEARLO ( ( ( __DATE__[9] - '0' ) * 10u ) + ( __DATE__[10] - '0' ) )

#define YEAR ( YEARHI * 100u + YEARLO )

#define MAJOR (0)

#define MINOR (1)

/*

constexpr int rdn( int y, int m, int d )

{

if ( m < 3 ) y--, m += 12;

return 365 * y + y / 4 - y / 100 + y / 400 + ( 153 * m - 457 ) / 5 + d - 306;

}

// Microsoft .Net style.

struct _VERSION

{

uint8_t Major;

uint8_t Minor;

uint16_t Build;

uint16_t Revision;

} Version =

{

MAJOR, MINOR, ( uint16_t ) ( rdn( YEAR, MON, DAY ) - rdn( 2000, 1, 1 ) ), ( HOUR * 3600 + MIN * 60 + SEC ) / 2

};

*/

using namespace date;

using namespace std::chrono;

// Microsoft .Net style.

constexpr struct _VERSION

{

uint8_t Major;

uint8_t Minor;

uint16_t Build;

uint16_t Revision;

} Version =

{

MAJOR, MINOR,

( sys_days( date::year_month_day( date::year{ YEAR } / MON / DAY ) ) - sys_days( date::year_month_day( date::year{ 2000 } / 1 / 1 ) ) ).count(),

( uint16_t ) ( hours( HOUR ) + minutes( MIN ) + seconds( SEC ) ).count() / 2u

};

#endif