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comparison plugins/libcalendaring/lib/Sabre/VObject/Component/VFreeBusy.php @ 4:888e774ee983

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libcalendar plugin as distributed
author Charlie Root
date Sat, 13 Jan 2018 08:57:56 -0500
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3:f6fe4b6ae66a 4:888e774ee983
1 <?php
2
3 namespace Sabre\VObject\Component;
4
5 use Sabre\VObject;
6
7 /**
8 * The VFreeBusy component
9 *
10 * This component adds functionality to a component, specific for VFREEBUSY
11 * components.
12 *
13 * @copyright Copyright (C) 2007-2013 fruux GmbH (https://fruux.com/).
14 * @author Evert Pot (http://evertpot.com/)
15 * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
16 */
17 class VFreeBusy extends VObject\Component {
18
19 /**
20 * Checks based on the contained FREEBUSY information, if a timeslot is
21 * available.
22 *
23 * @param DateTime $start
24 * @param Datetime $end
25 * @return bool
26 */
27 public function isFree(\DateTime $start, \Datetime $end) {
28
29 foreach($this->select('FREEBUSY') as $freebusy) {
30
31 // We are only interested in FBTYPE=BUSY (the default),
32 // FBTYPE=BUSY-TENTATIVE or FBTYPE=BUSY-UNAVAILABLE.
33 if (isset($freebusy['FBTYPE']) && strtoupper(substr((string)$freebusy['FBTYPE'],0,4))!=='BUSY') {
34 continue;
35 }
36
37 // The freebusy component can hold more than 1 value, separated by
38 // commas.
39 $periods = explode(',', (string)$freebusy);
40
41 foreach($periods as $period) {
42 // Every period is formatted as [start]/[end]. The start is an
43 // absolute UTC time, the end may be an absolute UTC time, or
44 // duration (relative) value.
45 list($busyStart, $busyEnd) = explode('/', $period);
46
47 $busyStart = VObject\DateTimeParser::parse($busyStart);
48 $busyEnd = VObject\DateTimeParser::parse($busyEnd);
49 if ($busyEnd instanceof \DateInterval) {
50 $tmp = clone $busyStart;
51 $tmp->add($busyEnd);
52 $busyEnd = $tmp;
53 }
54
55 if($start < $busyEnd && $end > $busyStart) {
56 return false;
57 }
58
59 }
60
61 }
62
63 return true;
64
65 }
66
67 }
68