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<?php
class qCal_DateTime_Recur_Yearly extends qCal_DateTime_Recur {
/**
* @todo This is a god method that really should be split out into each
* of the qCal_DateTime_Recur_Rule_ByXXX classes. For now I did all the logic
* here to keep it simple and not confuse myself more than necessary.
*/
protected function doGetRecurrences($rules, $start, $end) {
// an array to store recurrences
$recurrences = array();
// start day, year, and month
$sday = $start->format('d');
$smonth = $start->format('m');
$syear = $start->format('Y');
// end day, year, and month
$eday = $end->format('d');
$emonth = $end->format('m');
$eyear = $end->format('Y');
// loop over years, by increment
$year = $syear;
while ($year <= $eyear) {
// if byMonth is specified...
if (count($this->byMonth())) {
// loop over each month
for ($month = 1; $month <= 12; $month++) {
// if this is the start year still and we haven't reached the start month, skip ahead
if ($year == $syear && $month < $smonth) {
continue;
}
// if this is the end year and we have passed the end month, break out of loop
if ($year == $eyear && $month > $emonth) {
break;
}
// if this is not one of the bymonths, continue as well
if (!in_array($month, $this->byMonth())) {
continue;
}
// now we need to loop over each day of the month to look for byday or bymonthday
$thismonth = new qCal_Date(); // used to determine total days in the current month
$thismonth->setDate($year, $month, 1);
$weekdays = array(
'MO' => 0,
'TU' => 0,
'WE' => 0,
'TH' => 0,
'FR' => 0,
'SA' => 0,
'SU' => 0,
);
// @todo For now this only allows 1SU, SU, but not -1SU (no negatives for now)
for ($day = 1; $day <= $thismonth->format('t'); $day++) {
$alreadyadded = false;
$date = new qCal_Date;
$date->setDate($year, $month, $day);
$date->setTime(0, 0, 0);
$wdname = strtoupper(substr($date->format('l'), 0, 2));
// keep track of how many of each day of the week have gone by
$weekdays[$wdname]++;
// if byDay is specified...
// @todo this is inconsistent, I don't use the getter here because of its special functionality.
// I need to either remove the special functionality or not use getters elsewhere in this method
$byday = $this->byday;
if (count($byday)) {
// by day is broken into an array of arrays like array('TH' => 0), array('FR' => 1), array('MO' => -2) etc.
// with zero meaning every instance of that particular day should be included and number meaning the Nth of that day
foreach ($byday as $val) {
// if at least one of this wday has gone by...
$num = current($val);
if ($weekdays[$wdname] > 0) {
// check if it is the right week day and if a digit is specified (like 1SU) that it is checked as well
if ($wdname == key($val) && ($weekdays[$wdname] == $num || $num == 0)) {
$recurrences[] = $date;
$alreadyadded = true;
}
}
}
}
// if byMonthDay is specified...
if (count($this->byMonthDay())) {
foreach ($this->byMonthDay() as $mday) {
// only add this day if it hasn't been added already
if ($mday == $day && !$alreadyadded) {
$recurrences[] = $date;
}
}
}
// now loop over each hour and add hours
if (count($this->byHour())) {
$hourrecurrences = array();
foreach ($this->byHour() as $hour) {
$new = new qCal_Date();
$new = $new->copy($date);
$new->setTime($hour, 0, 0);
$hourrecurrences[] = $new;
}
}
// now loop over byHours and add byMinutes
if (count($this->byMinute())) {
if (!isset($minuterecurrences)) $minuterecurrences = array();
foreach ($this->byMinute() as $minute) {
$new = new qCal_Date();
$new = $new->copy($date);
$new->setTime(0, $minute, 0);
}
}
// now loop over byMinutes and add bySeconds
}
}
}
// if in the first year we don't find an instance, don't do the interval, just increment a year
if ($year == $syear && count($recurrences)) $year += $this->interval();
else ($year++);
}
// now loop over weeks to get byWeekNo
foreach ($recurrences as $date) {
// pr($date->format("r"));
}
// exit;
return $recurrences;
// for bymonth, it would make the most sense to loop over each month until the specified one
// is found. Then loop over each day to find its sub-rules.
// for byweekno, it would make the most sense to loop over each week until the specified one
// is found. Then apply any sub-rules (actually I'm not sure how byhour and its ilk would be applied in this situation... need to read the rfc)
}
}