// Ok
int KCalendarSystemHebrew::daysInYear(const TQDate & date) const
{
TQDate first, last;
setYMD(first, year(date), 1, 1); // 1 Tishrey
setYMD(last, year(date) + 1, 1, 1); // 1 Tishrey the year later
return first.daysTo(last);
}
// Ok
int KCalendarSystemHebrew::dayOfYear(const TQDate & date) const
{
TQDate first;
setYMD(first, year(date), 1, 1);
return first.daysTo(date) + 1;
}
// Ok
int KCalendarSystemHebrew::weeksInYear(int year) const
{
TQDate temp;
setYMD(temp, year, 1, 1); // don't pass an uninitialized TQDate to
// monthsInYear in the next call
setYMD(temp, year, monthsInYear(temp), hndays(monthsInYear(temp), year) );
int nWeekNumber = weekNumber(temp);
if(nWeekNumber == 1) // last week belongs to next year
{
temp = TQT_TQDATE_OBJECT(temp.addDays(-7));
nWeekNumber = weekNumber(temp);
}
return nWeekNumber;
}
int KCalendarSystemHebrew::weekNumber(const TQDate& date, int * yearNum) const
{
TQDate firstDayWeek1, lastDayOfYear;
int y = year(date);
int week;
int weekDay1, dayOfWeek1InYear;
// let's guess 1st day of 1st week
setYMD(firstDayWeek1, y, 1, 1);
weekDay1 = dayOfWeek(firstDayWeek1);
// iso 8601: week 1 is the first containing thursday and week starts on
// monday
if (weekDay1 > 4 /*Thursday*/)
firstDayWeek1 = addDays(firstDayWeek1 , 7 - weekDay1 + 1); // next monday
dayOfWeek1InYear = dayOfYear(firstDayWeek1);
if ( dayOfYear(date) < dayOfWeek1InYear ) // our date in prev year's week
{
if ( yearNum )
*yearNum = y - 1;
return weeksInYear(y - 1);
}
// let's check if its last week belongs to next year
setYMD(lastDayOfYear, y + 1, 1, 1);
lastDayOfYear = addDays(lastDayOfYear, -1);
if ( (dayOfYear(date) >= daysInYear(date) - dayOfWeek(lastDayOfYear) + 1)
// our date is in last week
&& dayOfWeek(lastDayOfYear) < 4) // 1st week in next year has thursday
{
if ( yearNum )
*yearNum = y + 1;
week = 1;
}
else
{
if( weekDay1 < 5 ) // To calculate properly the number of weeks
// from day a to x let's make a day 1 of week
firstDayWeek1 = addDays( firstDayWeek1, -( weekDay1 - 1));
week = firstDayWeek1.daysTo(date) / 7 + 1;
}
return week;
}
// Ok
TQDate KCalendarSystemHebrew::addYears( const TQDate & date, int nyears ) const
{
TQDate result = date;
int y = year(date) + nyears;
setYMD( result, y, month(date), day(date) );
return result;
}
QDate KCalendarSystemJalali::addMonths( const QDate &date, int nmonths ) const
{
QDate result = date;
int m = month( date );
int y = year( date );
if ( nmonths < 0 ) {
m += 12;
y -= 1;
}
--m; // this only works if we start counting at zero
m += nmonths;
y += m / 12;
m %= 12;
++m;
setYMD( result, y, m, day( date ) );
return result;
}
QDate::QDate( int y, int m, int d )
{
jd = 0;
setYMD( y, m, d );
}
