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-rw-r--r--src/corelib/tools/qdatetime.cpp115
1 files changed, 46 insertions, 69 deletions
diff --git a/src/corelib/tools/qdatetime.cpp b/src/corelib/tools/qdatetime.cpp
index e5fbf5af5e..505a6f863b 100644
--- a/src/corelib/tools/qdatetime.cpp
+++ b/src/corelib/tools/qdatetime.cpp
@@ -560,22 +560,6 @@ int QDate::daysInYear() const
January 2000 has week number 52 in the year 1999, and 31 December
2002 has week number 1 in the year 2003.
- \legalese
- Copyright (c) 1989 The Regents of the University of California.
- All rights reserved.
-
- Redistribution and use in source and binary forms are permitted
- provided that the above copyright notice and this paragraph are
- duplicated in all such forms and that any documentation,
- advertising materials, and other materials related to such
- distribution and use acknowledge that the software was developed
- by the University of California, Berkeley. The name of the
- University may not be used to endorse or promote products derived
- from this software without specific prior written permission.
- THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
- IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
\sa isValid()
*/
@@ -585,46 +569,29 @@ int QDate::weekNumber(int *yearNumber) const
return 0;
int year = QDate::year();
- int yday = dayOfYear() - 1;
+ int yday = dayOfYear();
int wday = dayOfWeek();
- if (wday == 7)
- wday = 0;
- int w;
-
- for (;;) {
- int len;
- int bot;
- int top;
-
- len = isLeapYear(year) ? 366 : 365;
- /*
- ** What yday (-3 ... 3) does
- ** the ISO year begin on?
- */
- bot = ((yday + 11 - wday) % 7) - 3;
- /*
- ** What yday does the NEXT
- ** ISO year begin on?
- */
- top = bot - (len % 7);
- if (top < -3)
- top += 7;
- top += len;
- if (yday >= top) {
+
+ int week = (yday - wday + 10) / 7;
+
+ if (week == 0) {
+ // last week of previous year
+ --year;
+ week = (yday + 365 + (QDate::isLeapYear(year) ? 1 : 0) - wday + 10) / 7;
+ Q_ASSERT(week == 52 || week == 53);
+ } else if (week == 53) {
+ // maybe first week of next year
+ int w = (yday - 365 - (QDate::isLeapYear(year + 1) ? 1 : 0) - wday + 10) / 7;
+ if (w > 0) {
++year;
- w = 1;
- break;
+ week = w;
}
- if (yday >= bot) {
- w = 1 + ((yday - bot) / 7);
- break;
- }
- --year;
- yday += isLeapYear(year) ? 366 : 365;
+ Q_ASSERT(week == 53 || week == 1);
}
+
if (yearNumber != 0)
*yearNumber = year;
- return w;
+ return week;
}
#ifndef QT_NO_TEXTDATE
@@ -2473,11 +2440,12 @@ static bool epochMSecsToLocalTime(qint64 msecs, QDate *localDate, QTime *localTi
}
}
-// Convert a LocalTime expressed in local msecs encoding into a UTC epoch msecs
-// Optionally populate the returned values from mktime for the adjusted local
-// date and time and daylight status. Uses daylightStatus in calculation if populated.
-static qint64 localMSecsToEpochMSecs(qint64 localMsecs, QDate *localDate = 0, QTime *localTime = 0,
- QDateTimePrivate::DaylightStatus *daylightStatus = 0,
+// Convert a LocalTime expressed in local msecs encoding and the corresponding
+// daylight status into a UTC epoch msecs. Optionally populate the returned
+// values from mktime for the adjusted local date and time.
+static qint64 localMSecsToEpochMSecs(qint64 localMsecs,
+ QDateTimePrivate::DaylightStatus *daylightStatus,
+ QDate *localDate = 0, QTime *localTime = 0,
QString *abbreviation = 0, bool *ok = 0)
{
QDate dt;
@@ -2713,9 +2681,11 @@ qint64 QDateTimePrivate::toMSecsSinceEpoch() const
case Qt::UTC:
return (m_msecs - (m_offsetFromUtc * 1000));
- case Qt::LocalTime:
+ case Qt::LocalTime: {
// recalculate the local timezone
- return localMSecsToEpochMSecs(m_msecs);
+ DaylightStatus status = daylightStatus();
+ return localMSecsToEpochMSecs(m_msecs, &status);
+ }
case Qt::TimeZone:
#ifndef QT_BOOTSTRAPPED
@@ -2785,7 +2755,7 @@ void QDateTimePrivate::refreshDateTime()
qint64 epochMSecs = 0;
if (m_spec == Qt::LocalTime) {
DaylightStatus status = daylightStatus();
- epochMSecs = localMSecsToEpochMSecs(m_msecs, &testDate, &testTime, &status);
+ epochMSecs = localMSecsToEpochMSecs(m_msecs, &status, &testDate, &testTime);
#ifndef QT_BOOTSTRAPPED
} else {
epochMSecs = zoneMSecsToEpochMSecs(m_msecs, m_timeZone, &testDate, &testTime);
@@ -3223,7 +3193,7 @@ QString QDateTime::timeZoneAbbreviation() const
case Qt::LocalTime: {
QString abbrev;
QDateTimePrivate::DaylightStatus status = d->daylightStatus();
- localMSecsToEpochMSecs(d->m_msecs, 0, 0, &status, &abbrev);
+ localMSecsToEpochMSecs(d->m_msecs, &status, 0, 0, &abbrev);
return abbrev;
}
}
@@ -3254,7 +3224,7 @@ bool QDateTime::isDaylightTime() const
case Qt::LocalTime: {
QDateTimePrivate::DaylightStatus status = d->daylightStatus();
if (status == QDateTimePrivate::UnknownDaylightTime)
- localMSecsToEpochMSecs(d->m_msecs, 0, 0, &status, 0);
+ localMSecsToEpochMSecs(d->m_msecs, &status);
return (status == QDateTimePrivate::DaylightTime);
}
}
@@ -3469,6 +3439,7 @@ void QDateTime::setMSecsSinceEpoch(qint64 msecs)
epochMSecsToLocalTime(msecs, &dt, &tm, &status);
d->setDateTime(dt, tm);
d->setDaylightStatus(status);
+ d->refreshDateTime();
break;
}
}
@@ -3708,12 +3679,14 @@ QDateTime QDateTime::addDays(qint64 ndays) const
date = date.addDays(ndays);
// Result might fall into "missing" DaylightTime transition hour,
// so call conversion and use the adjusted returned time
- if (d->m_spec == Qt::LocalTime)
- localMSecsToEpochMSecs(timeToMSecs(date, time), &date, &time);
+ if (d->m_spec == Qt::LocalTime) {
+ QDateTimePrivate::DaylightStatus status = d->daylightStatus();
+ localMSecsToEpochMSecs(timeToMSecs(date, time), &status, &date, &time);
#ifndef QT_BOOTSTRAPPED
- else if (d->m_spec == Qt::TimeZone)
+ } else if (d->m_spec == Qt::TimeZone) {
QDateTimePrivate::zoneMSecsToEpochMSecs(timeToMSecs(date, time), d->m_timeZone, &date, &time);
#endif // QT_BOOTSTRAPPED
+ }
dt.d->setDateTime(date, time);
return dt;
}
@@ -3742,12 +3715,14 @@ QDateTime QDateTime::addMonths(int nmonths) const
date = date.addMonths(nmonths);
// Result might fall into "missing" DaylightTime transition hour,
// so call conversion and use the adjusted returned time
- if (d->m_spec == Qt::LocalTime)
- localMSecsToEpochMSecs(timeToMSecs(date, time), &date, &time);
+ if (d->m_spec == Qt::LocalTime) {
+ QDateTimePrivate::DaylightStatus status = d->daylightStatus();
+ localMSecsToEpochMSecs(timeToMSecs(date, time), &status, &date, &time);
#ifndef QT_BOOTSTRAPPED
- else if (d->m_spec == Qt::TimeZone)
+ } else if (d->m_spec == Qt::TimeZone) {
QDateTimePrivate::zoneMSecsToEpochMSecs(timeToMSecs(date, time), d->m_timeZone, &date, &time);
#endif // QT_BOOTSTRAPPED
+ }
dt.d->setDateTime(date, time);
return dt;
}
@@ -3776,12 +3751,14 @@ QDateTime QDateTime::addYears(int nyears) const
date = date.addYears(nyears);
// Result might fall into "missing" DaylightTime transition hour,
// so call conversion and use the adjusted returned time
- if (d->m_spec == Qt::LocalTime)
- localMSecsToEpochMSecs(timeToMSecs(date, time), &date, &time);
+ if (d->m_spec == Qt::LocalTime) {
+ QDateTimePrivate::DaylightStatus status = d->daylightStatus();
+ localMSecsToEpochMSecs(timeToMSecs(date, time), &status, &date, &time);
#ifndef QT_BOOTSTRAPPED
- else if (d->m_spec == Qt::TimeZone)
+ } else if (d->m_spec == Qt::TimeZone) {
QDateTimePrivate::zoneMSecsToEpochMSecs(timeToMSecs(date, time), d->m_timeZone, &date, &time);
#endif // QT_BOOTSTRAPPED
+ }
dt.d->setDateTime(date, time);
return dt;
}
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