public function overlaps(TimeRange $range)
{
if ($range->get_start() >= $this->end) {
return FALSE;
} elseif ($range->get_end() <= $this->start) {
return FALSE;
} else {
return TRUE;
}
}
public static function formatDateRange(TimeRange $range, $dateStyle, $timeStyle)
{
$string = '';
if ($range instanceof DayRange) {
$timeStyle = self::NO_STYLE;
}
$string = self::formatDate($range->get_start(), $dateStyle, $timeStyle);
if ($range->get_end() && $range->get_end() != $range->get_start()) {
if (date('Ymd', $range->get_start()) == date('Ymd', $range->get_end())) {
$dateStyle = self::NO_STYLE;
}
if ($dateStyle != self::NO_STYLE || $timeStyle != self::NO_STYLE) {
$string .= ($dateStyle ? ' - ' : '-') . self::formatDate($range->get_end(), $dateStyle, $timeStyle);
}
}
return $string;
}
function occurrences(ICalEvent $event, TimeRange $range = null, $max = null)
{
$occurrences = array();
$time = $event->get_start();
$diff = $event->get_end() - $event->get_start();
$limitType = $this->limitType;
$limit = $this->limit;
$count = 0;
// echo date('m/d/Y H:i:s', $time) . "<br>\n";
$time = $this->nextIncrement($time, $this->type, $this->interval);
while ($time <= $range->get_end()) {
// echo date('m/d/Y H:i:s', $time) . "<br>\n";
if ($limitType == 'UNTIL' && $time > $limit) {
break;
}
$occurrence_range = new TimeRange($time, $time + $diff);
if ($occurrence_range->overlaps($range)) {
if ($recurrence_exception = $event->getRecurrenceException($time)) {
$occurrence = clone $recurrence_exception;
} else {
$occurrence = clone $event;
$occurrence->setRange($occurrence_range);
$occurrence->clear_rrules();
$recurrence_id = strftime("%Y%m%dT%H%M%S", $time);
if ($tzid = $occurrence->get_tzid()) {
$recurrence_id = sprintf("TZID=%s:%s", $tzid, $recurrence_id);
}
$occurrence->set_attribute('RECURRENCE-ID', $recurrence_id);
}
$occurrences[] = $occurrence;
}
if ($limitType == 'COUNT' && $count < $limit) {
break;
}
if ($count > ICalRecurrenceRule::MAX_OCCURRENCES) {
break;
}
if (!is_null($max) && count($occurrences) >= $max) {
break;
}
$time = $this->nextIncrement($time, $this->type, $this->interval);
$count++;
}
return $occurrences;
}
