Differential D536 Diff 1244 plugins/libcalendaring/lib/libcalendaring_recurrence.php

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plugins/libcalendaring/lib/libcalendaring_recurrence.php

Show First 20 Lines • Show All 146 Lines • ▼ Show 20 Lines	public function end()
$last = $next;		$last = $next;
$c++;		$c++;
}		}
}		}

return $last;		return $last;
}		}

		/**
		* Find date/time of the first occurrence (excluding start date)
		*/
		public function first_occurrence()
		{
		$start = clone $this->start;
		$orig_start = clone $this->start;
		$r = $this->recurrence;
		$interval = intval($r['INTERVAL'] ?: 1);

		switch ($this->recurrence['FREQ']) {
		case 'WEEKLY':
		if (empty($this->recurrence['BYDAY'])) {
		return $start;
		}

		$start->sub(new DateInterval("P{$interval}W"));
		break;

		case 'MONTHLY':
		if (empty($this->recurrence['BYDAY']) && empty($this->recurrence['BYMONTHDAY'])) {
		return $start;
		}

		$start->sub(new DateInterval("P{$interval}M"));
		break;

		case 'YEARLY':
		if (empty($this->recurrence['BYDAY']) && empty($this->recurrence['BYMONTH'])) {
		return $start;
		}

		$start->sub(new DateInterval("P{$interval}Y"));
		break;

		default:
		return $start;
		}

		$r = $this->recurrence;
		$r['INTERVAL'] = $interval;
		if ($r['COUNT']) {
		// Increase count so we do not stop the loop to early
		$r['COUNT'] += 100;
		}

		// Create recurrence that starts in the past
		$recurrence = new self($this->lib);
		$recurrence->init($r, $start);

		// find the first occurrence
		$found = false;
		while ($next = $recurrence->next()) {
		$start = $next;
		if ($next >= $orig_start) {
		$found = true;
		break;
		}
		}

		if (!$found) {
		rcube::raise_error(array(
		'file' => __FILE__,
		'line' => __LINE__,
		'message' => sprintf("Failed to find a first occurrence. Start: %s, Recurrence: %s",
		$orig_start->format(DateTime::ISO8601), json_encode($r)),
		), true);

		return null;
		}

		if ($start Instanceof Horde_Date) {
		$start = $start->toDateTime();
		}

		$start->_dateonly = $this->dateonly;

		return $start;
		}
}		}