2 * Copyright (C) 2012 Patrick Gansterer <paroga@paroga.com>
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 #include "GregorianDateTime.h"
38 void GregorianDateTime::setToCurrentLocalTime()
41 SYSTEMTIME systemTime;
42 GetLocalTime(&systemTime);
43 TIME_ZONE_INFORMATION timeZoneInformation;
44 DWORD timeZoneId = GetTimeZoneInformation(&timeZoneInformation);
46 LONG bias = timeZoneInformation.Bias;
47 if (timeZoneId == TIME_ZONE_ID_DAYLIGHT)
48 bias += timeZoneInformation.DaylightBias;
49 else if (timeZoneId == TIME_ZONE_ID_STANDARD)
50 bias += timeZoneInformation.StandardBias;
52 ASSERT(timeZoneId == TIME_ZONE_ID_UNKNOWN);
54 m_year = systemTime.wYear;
55 m_month = systemTime.wMonth - 1;
56 m_monthDay = systemTime.wDay;
57 m_yearDay = dayInYear(m_year, m_month, m_monthDay);
58 m_weekDay = systemTime.wDayOfWeek;
59 m_hour = systemTime.wHour;
60 m_minute = systemTime.wMinute;
61 m_second = systemTime.wSecond;
62 m_utcOffset = -bias * secondsPerMinute;
63 m_isDST = timeZoneId == TIME_ZONE_ID_DAYLIGHT ? 1 : 0;
66 time_t localTime = time(0);
67 localtime_r(&localTime, &localTM);
69 m_year = localTM.tm_year + 1900;
70 m_month = localTM.tm_mon;
71 m_monthDay = localTM.tm_mday;
72 m_yearDay = localTM.tm_yday;
73 m_weekDay = localTM.tm_wday;
74 m_hour = localTM.tm_hour;
75 m_minute = localTM.tm_min;
76 m_second = localTM.tm_sec;
77 m_isDST = localTM.tm_isdst;
79 m_utcOffset = localTM.tm_gmtoff;
81 int utcOffset = calculateUTCOffset();
82 utcOffset += calculateDSTOffset(localTime * msPerSecond, utcOffset);
83 m_utcOffset = utcOffset / msPerSecond;