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calendar_recurrence.php
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calendar_recurrence.php
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<?php
require_once realpath(__DIR__ . '/../../libcalendaring/lib/libcalendaring_recurrence.php');
/**
* Recurrence computation class for the Calendar plugin
*
* Uitility class to compute instances of recurring events.
*
* @author Thomas Bruederli <bruederli@kolabsys.com>
*
* Copyright (C) 2012-2014, Kolab Systems AG <contact@kolabsys.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
class calendar_recurrence extends libcalendaring_recurrence
{
private $event;
private $duration;
/**
* Default constructor
*
* @param calendar $cal The calendar plugin instance
* @param array $event The event object to operate on
*/
function __construct($cal, $event)
{
parent::__construct($cal->lib);
$this->event = $event;
if (is_object($event['start']) && is_object($event['end'])) {
$this->duration = $event['start']->diff($event['end']);
}
$event['start']->_dateonly = !empty($event['allday']);
$this->init($event['recurrence'], $event['start']);
}
/**
* Alias of libcalendaring_recurrence::next()
*
* @return mixed DateTime object or False if recurrence ended
*/
public function next_start()
{
return $this->next();
}
/**
* Get the next recurring instance of this event
*
* @return mixed Array with event properties or False if recurrence ended
*/
public function next_instance()
{
if ($next_start = $this->next()) {
$next = $this->event;
$next['start'] = $next_start;
if ($this->duration) {
$next['end'] = clone $next_start;
$next['end']->add($this->duration);
}
$next['recurrence_date'] = clone $next_start;
$next['_instance'] = libcalendaring::recurrence_instance_identifier($next, $this->event['allday']);
unset($next['_formatobj']);
return $next;
}
return false;
}
}

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