kits/support/DateTime.cpp

480 	Please note that a date before 1.1.4713 BC, a date with year 0 and a date
482 	date is invalid, the date is not set and IsValid() returns false. Also note
556 	Returns true if the date is valid, otherwise false.
558 	Please note that a date before 1.1.4713 BC, a date with year 0 and a date
572 BDate::IsValid(const BDate& date)
574 	return IsValid(date.fYear, date.fMonth, date.fDay);
603 	Returns the current date as reported by the system depending on the given
627 BDate::SetDate(const BDate& date)
629 	return _SetDate(date.fYear, date.fMonth, date.fDay);
634 	Set the date to \c year \c month and \c day.
636 	Returns true if the date is valid; otherwise false. If the specified date is
637 	invalid, the date is not set and the function returns false.
648 	representative values of this date. The pointers can be NULL. If the date is
667 	Adds \c days to the current date. If the passed value is negative it will
668 	become earlier. If the current date is invalid, the \c days are not added.
679 	Adds \c years to the current date. If the passed value is negativ it will
680 	become earlier. If the current date is invalid, the \c years are not added.
682 	resulting year, so this function will then return the latest valid date.
700 	Adds \c months to the current date. If the passed value is negativ it will
701 	become earlier. If the current date is invalid, the \c months are not added.
703 	resulting year, so this function will then return the latest valid date.
734 	Returns the day fragment of the date. The return value will be in the range
735 	of 1 to 31, in case the date is invalid it will be -1.
745 	Returns the year fragment of the date. If the date is invalid, the function
756 	Returns the month fragment of the date. The return value will be in the
757 	range of 1 to 12, in case the date is invalid it will be -1.
767 	Returns the difference in days between this date and the given BDate \c date.
768 	If \c date is earlier the return value will be negativ. If the calculation
769 	is done with an invalid date, the result is undefined.
772 BDate::Difference(const BDate& date) const
774 	return date.DateToJulianDay() - DateToJulianDay();
800 	Returns the week number of the date, if the date is invalid it will return
802 	calendar, thus a date before 15.10.1582 will return B_ERROR.
861 	monday. If the date is invalid, the function will return B_ERROR.
873 	the date is invalid, the function will return B_ERROR.
913 	Returns the number of days in the year of the current date. If the date is
927 	Returns the number of days in the month of the current date. If the date is
1065 	Converts the date to Julian day. If your date is invalid, the function will
1077 	the function will return an invalid date. Because of the switch from Julian
1083 	BDate date;
1095 		date.fYear = ((j / 146097) * 400 + c * 100 + (dc / 1461) * 4 + a)
1097 		date.fMonth = (m + 2) % 12 + 1;
1098 		date.fDay = int32((da - (m + 4) * 153 / 5 + 122) + 1.5);
1105 		date.fDay = e - (153 * m + 2) / 5 + 1;
1106 		date.fMonth = m + 3 - 12 * (m / 10);
1110 		date.fYear = year;
1112 	return date;
1117 	Returns true if this date is different from \c date, otherwise false.
1120 BDate::operator!=(const BDate& date) const
1122 	return DateToJulianDay() != date.DateToJulianDay();
1127 	Returns true if this date is equal to \c date, otherwise false.
1130 BDate::operator==(const BDate& date) const
1132 	return DateToJulianDay() == date.DateToJulianDay();
1137 	Returns true if this date is earlier than \c date, otherwise false.
1140 BDate::operator<(const BDate& date) const
1142 	return DateToJulianDay() < date.DateToJulianDay();
1147 	Returns true if this date is earlier than or equal to \c date, otherwise
1151 BDate::operator<=(const BDate& date) const
1153 	return DateToJulianDay() <= date.DateToJulianDay();
1158 	Returns true if this date is later than \c date, otherwise false.
1161 BDate::operator>(const BDate& date) const
1163 	return DateToJulianDay() > date.DateToJulianDay();
1168 	Returns true if this date is later than or equal to \c date, otherwise
1172 BDate::operator>=(const BDate& date) const
1174 	return DateToJulianDay() >= date.DateToJulianDay();
1255 	Constructs a BDateTime object with \c date and \c time. The return value
1258 BDateTime::BDateTime(const BDate& date, const BTime& time)
1259 	: fDate(date),
1301 	Returns true if the date time is valid, otherwise false.
1311 	Returns the current date and time as reported by the system depending on the
1322 	Sets the current date and time of this object to \c date and \c time.
1325 BDateTime::SetDateTime(const BDate& date, const BTime& time)
1327 	fDate = date;
1333 	Returns the current date of this object.
1343 	Returns the current date of this object.
1353 	Set the current date of this object to \c date.
1356 BDateTime::SetDate(const BDate& date)
1358 	fDate = date;
1393 	Returns the current date and time converted to seconds since
1394 	1.1.1970 - 00:00:00. If the current date is before 1.1.1970 the function
1400 	BDate date(1970, 1, 1);
1401 	if (date.Difference(fDate) < 0)
1423 	Sets the current date and time converted from seconds since
1439 	BDate date(1970, 1, 1);
1440 	date.AddDays(seconds / kSecondsPerDay);
1441 	fDate.SetDate(date);