95 lines
2.9 KiB
PHP
95 lines
2.9 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Georg Ehrke <ownclouddev@georgswebsite.de>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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/**
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* This class does export and converts all times to UTC
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*/
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class OC_Calendar_Export{
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/**
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* @brief Use one of these constants as second parameter if you call OC_Calendar_Export::export()
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*/
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const CALENDAR = 'calendar';
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const EVENT = 'event';
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/**
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* @brief export a calendar or an event
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* @param integer $id id of calendar / event
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* @param string $type use OC_Calendar_Export constants
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* @return string
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*/
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public static function export($id, $type) {
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if($type == self::EVENT) {
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$return = self::event($id);
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}else{
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$return = self::calendar($id);
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}
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return self::fixLineBreaks($return);
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}
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/**
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* @brief exports a calendar and convert all times to UTC
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* @param integer $id id of the calendar
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* @return string
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*/
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private static function calendar($id) {
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$events = OC_Calendar_Object::all($id);
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$calendar = OC_Calendar_Calendar::find($id);
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$return = "BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:ownCloud Calendar " . OCP\App::getAppVersion('calendar') . "\nX-WR-CALNAME:" . $calendar['displayname'] . "\n";
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foreach($events as $event) {
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$return .= self::generateEvent($event);
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}
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$return .= "END:VCALENDAR";
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return $return;
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}
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/**
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* @brief exports an event and convert all times to UTC
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* @param integer $id id of the event
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* @return string
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*/
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private static function event($id) {
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$event = OC_Calendar_Object::find($id);
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$return = "BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:ownCloud Calendar " . OCP\App::getAppVersion('calendar') . "\nX-WR-CALNAME:" . $event['summary'] . "\n";
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$return .= self::generateEvent($event);
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$return .= "END:VCALENDAR";
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return $return;
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}
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/**
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* @brief generates the VEVENT with UTC dates
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* @param array $event
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* @return string
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*/
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private static function generateEvent($event) {
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$object = OC_VObject::parse($event['calendardata']);
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$dtstart = $object->VEVENT->DTSTART;
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$start_dt = $dtstart->getDateTime();
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$dtend = OC_Calendar_Object::getDTEndFromVEvent($object->VEVENT);
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$end_dt = $dtend->getDateTime();
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if($dtstart->getDateType() !== Sabre_VObject_Element_DateTime::DATE) {
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$start_dt->setTimezone(new DateTimeZone('UTC'));
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$end_dt->setTimezone(new DateTimeZone('UTC'));
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$object->VEVENT->setDateTime('DTSTART', $start_dt, Sabre_VObject_Property_DateTime::UTC);
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$object->VEVENT->setDateTime('DTEND', $end_dt, Sabre_VObject_Property_DateTime::UTC);
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}
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return $object->VEVENT->serialize();
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}
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/**
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* @brief fixes new line breaks
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* (fixes problems with Apple iCal)
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* @param string $string to fix
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* @return string
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*/
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private static function fixLineBreaks($string) {
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$string = str_replace("\r\n", "\n", $string);
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$string = str_replace("\r", "\n", $string);
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$string = str_replace("\n", "\r\n", $string);
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return $string;
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}
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}
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