1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/*
* Copyright (C) 2012, 2014 Patrick Gansterer <paroga@paroga.com>
*
* 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 APPLE AND ITS 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 APPLE OR ITS 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.
*/
#include "config.h"
#include <wtf/GregorianDateTime.h>
#include <wtf/DateMath.h>
#if OS(WINDOWS)
#include <windows.h>
#else
#include <time.h>
#endif
namespace WTF {
GregorianDateTime::GregorianDateTime(double ms, LocalTimeOffset localTime)
{
if (ms >= 0
#if OS(WINDOWS) && CPU(X86)
// The VS Compiler for 32-bit builds generates a floating point error when attempting to cast
// from an infinity to a 64-bit integer. We leave this routine with the floating point error
// left in a register, causing undefined behavior in later floating point operations.
//
// To avoid this issue, we check for infinity here, and return false in that case.
&& !std::isinf(ms)
#endif
) {
int64_t integer = static_cast<int64_t>(ms);
if (static_cast<double>(integer) == ms && integer <= maxECMAScriptTime) {
// Positive integer fast path.
WTF::TimeClippedPositiveMilliseconds timeClipped(integer);
const int year = msToYear(ms);
setSecond(msToSeconds(timeClipped));
setMinute(msToMinutes(timeClipped));
setHour(msToHours(timeClipped));
setWeekDay(msToWeekDay(timeClipped));
int yearDay = dayInYear(timeClipped, year);
bool leapYear = isLeapYear(year);
setYearDay(yearDay);
setMonthDay(dayInMonthFromDayInYear(yearDay, leapYear));
setMonth(monthFromDayInYear(yearDay, leapYear));
setYear(year);
setIsDST(localTime.isDST);
setUTCOffsetInMinute(localTime.offset / WTF::msPerMinute);
return;
}
}
const int year = msToYear(ms);
setSecond(msToSeconds(ms));
setMinute(msToMinutes(ms));
setHour(msToHours(ms));
setWeekDay(msToWeekDay(ms));
int yearDay = dayInYear(ms, year);
bool leapYear = isLeapYear(year);
setYearDay(yearDay);
setMonthDay(dayInMonthFromDayInYear(yearDay, leapYear));
setMonth(monthFromDayInYear(yearDay, leapYear));
setYear(year);
setIsDST(localTime.isDST);
setUTCOffsetInMinute(localTime.offset / WTF::msPerMinute);
}
void GregorianDateTime::setToCurrentLocalTime()
{
#if OS(WINDOWS)
SYSTEMTIME systemTime;
GetLocalTime(&systemTime);
TIME_ZONE_INFORMATION timeZoneInformation;
DWORD timeZoneId = GetTimeZoneInformation(&timeZoneInformation);
LONG bias = 0;
if (timeZoneId != TIME_ZONE_ID_INVALID) {
bias = timeZoneInformation.Bias;
if (timeZoneId == TIME_ZONE_ID_DAYLIGHT)
bias += timeZoneInformation.DaylightBias;
else if ((timeZoneId == TIME_ZONE_ID_STANDARD) || (timeZoneId == TIME_ZONE_ID_UNKNOWN))
bias += timeZoneInformation.StandardBias;
else
ASSERT(0);
}
m_year = systemTime.wYear;
m_month = systemTime.wMonth - 1;
m_monthDay = systemTime.wDay;
m_yearDay = dayInYear(m_year, m_month, m_monthDay);
m_weekDay = systemTime.wDayOfWeek;
m_hour = systemTime.wHour;
m_minute = systemTime.wMinute;
m_second = systemTime.wSecond;
m_utcOffsetInMinute = -bias;
m_isDST = timeZoneId == TIME_ZONE_ID_DAYLIGHT ? 1 : 0;
#else
tm localTM;
time_t localTime = time(0);
#if HAVE(LOCALTIME_R)
localtime_r(&localTime, &localTM);
#else
localtime_s(&localTime, &localTM);
#endif
m_year = localTM.tm_year + 1900;
m_month = localTM.tm_mon;
m_monthDay = localTM.tm_mday;
m_yearDay = localTM.tm_yday;
m_weekDay = localTM.tm_wday;
m_hour = localTM.tm_hour;
m_minute = localTM.tm_min;
m_second = localTM.tm_sec;
m_isDST = localTM.tm_isdst;
#if HAVE(TM_GMTOFF)
m_utcOffsetInMinute = localTM.tm_gmtoff / secondsPerMinute;
#else
m_utcOffsetInMinute = calculateLocalTimeOffset(localTime * msPerSecond).offset / msPerMinute;
#endif
#endif
}
} // namespace WTF
|
