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/*
* Copyright (c) 2009 Rozhuk Ivan <rozhuk.im@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#if !defined(AFX_TIME_FUNCS__H__INCLUDED_)
#define AFX_TIME_FUNCS__H__INCLUDED_
#pragma once
#include <windows.h>
#include <time.h>
#define _MAX__TIME32_T 0x7fffd27f // number of seconds from
// 00:00:00, 01/01/1970 UTC to
// 23:59:59, 01/18/2038 UTC
// Number of 100 nanosecond units from 1/1/1601 to 1/1/1970
#define EPOCH_BIAS 116444736000000000i64
//nion to facilitate converting from FILETIME to unsigned __int64
typedef union {
unsigned __int64 ft_scalar;
FILETIME ft_struct;
} FT;
static inline __time32_t __cdecl _time32(__time32_t *timeptr)
{
__time64_t tim;
FT nt_time;
GetSystemTimeAsFileTime(&(nt_time.ft_struct));
tim=(__time64_t)((nt_time.ft_scalar-EPOCH_BIAS)/10000000i64);
if (tim > (__time64_t)(_MAX__TIME32_T)) tim=(__time64_t)(-1);
if (timeptr) *timeptr = (__time32_t)(tim);// store time if requested
return(__time32_t)(tim);
}
inline __time32_t MakeTime32FromLocalSystemTime(CONST PSYSTEMTIME pcstSystemTime)
{
__time64_t tim=0;
FT nt_time;
if (SystemTimeToFileTime(pcstSystemTime,&(nt_time.ft_struct)))
{
if (LocalFileTimeToFileTime(&(nt_time.ft_struct),&(nt_time.ft_struct)))
{
tim=(__time64_t)((nt_time.ft_scalar-EPOCH_BIAS)/10000000i64);
if (tim > (__time64_t)(_MAX__TIME32_T)) tim=(__time64_t)(-1);
}
}
return(__time32_t)(tim);
}
inline BOOL MakeLocalSystemTimeFromTime32(__time32_t tim32,PSYSTEMTIME pstSystemTime)
{
BOOL bRet=FALSE;
if (pstSystemTime)
{
__time64_t tim=(__time64_t)tim32;
FT nt_time;
//if (tim==(__time64_t)(-1)) tim=(__time64_t)(_MAX__TIME32_T);
nt_time.ft_scalar=(__time64_t)((tim*10000000i64)+EPOCH_BIAS);
if (FileTimeToLocalFileTime(&(nt_time.ft_struct),&(nt_time.ft_struct)))
{
bRet=FileTimeToSystemTime(&(nt_time.ft_struct),pstSystemTime);
}
}
return(bRet);
}
#endif // !defined(AFX_TIME_FUNCS__H__INCLUDED_)
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