time2-win.cpp revision ab79888f2d6b4c61dd9ed587aec2bd70dcc17966
/* $Id$ */
/** @file
* IPRT - Time, Windows.
*/
/*
* Copyright (C) 2006-2014 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP RTLOGGROUP_TIME
#include <Windows.h>
#include <iprt/time.h>
#include "internal/iprt.h"
#include <iprt/assert.h>
#include <iprt/err.h>
#include "internal/time.h"
RTDECL(int) RTTimeSet(PCRTTIMESPEC pTime)
{
FILETIME FileTime;
SYSTEMTIME SysTime;
if (FileTimeToSystemTime(RTTimeSpecGetNtFileTime(pTime, &FileTime), &SysTime))
{
if (SetSystemTime(&SysTime))
return VINF_SUCCESS;
}
return RTErrConvertFromWin32(GetLastError());
}
RTDECL(PRTTIME) RTTimeLocalExplode(PRTTIME pTime, PCRTTIMESPEC pTimeSpec)
{
/*
* FileTimeToLocalFileTime does not do the right thing, so we'll have
* to convert to system time and SystemTimeToTzSpecificLocalTime instead.
*/
RTTIMESPEC LocalTime;
SYSTEMTIME SystemTimeIn;
FILETIME FileTime;
if (FileTimeToSystemTime(RTTimeSpecGetNtFileTime(pTimeSpec, &FileTime), &SystemTimeIn))
{
SYSTEMTIME SystemTimeOut;
if (SystemTimeToTzSpecificLocalTime(NULL /* use current TZI */,
&SystemTimeIn,
&SystemTimeOut))
{
if (SystemTimeToFileTime(&SystemTimeOut, &FileTime))
{
RTTimeSpecSetNtFileTime(&LocalTime, &FileTime);
pTime = RTTimeExplode(pTime, &LocalTime);
if (pTime)
pTime->fFlags = (pTime->fFlags & ~RTTIME_FLAGS_TYPE_MASK) | RTTIME_FLAGS_TYPE_LOCAL;
return pTime;
}
}
}
/*
* The fallback is to use the current offset.
* (A better fallback would be to use the offset of the same time of the year.)
*/
LocalTime = *pTimeSpec;
RTTimeSpecAddNano(&LocalTime, RTTimeLocalDeltaNano());
pTime = RTTimeExplode(pTime, &LocalTime);
if (pTime)
pTime->fFlags = (pTime->fFlags & ~RTTIME_FLAGS_TYPE_MASK) | RTTIME_FLAGS_TYPE_LOCAL;
return pTime;
}