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comparison vendor/sabre/vobject/lib/Splitter/ICalendar.php @ 7:430dbd5346f7

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vendor sabre as distributed
author Charlie Root
date Sat, 13 Jan 2018 09:06:10 -0500
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6:cec75ba50afc 7:430dbd5346f7
1 <?php
2
3 namespace Sabre\VObject\Splitter;
4
5 use
6 Sabre\VObject,
7 Sabre\VObject\Component\VCalendar;
8
9 /**
10 * Splitter
11 *
12 * This class is responsible for splitting up iCalendar objects.
13 *
14 * This class expects a single VCALENDAR object with one or more
15 * calendar-objects inside. Objects with identical UID's will be combined into
16 * a single object.
17 *
18 * @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
19 * @author Dominik Tobschall
20 * @author Armin Hackmann
21 * @license http://sabre.io/license/ Modified BSD License
22 */
23 class ICalendar implements SplitterInterface {
24
25 /**
26 * Timezones
27 *
28 * @var array
29 */
30 protected $vtimezones = array();
31
32 /**
33 * iCalendar objects
34 *
35 * @var array
36 */
37 protected $objects = array();
38
39 /**
40 * Constructor
41 *
42 * The splitter should receive an readable file stream as it's input.
43 *
44 * @param resource $input
45 * @param int $options Parser options, see the OPTIONS constants.
46 */
47 public function __construct($input, $options = 0) {
48
49 $data = VObject\Reader::read($input, $options);
50 $vtimezones = array();
51 $components = array();
52
53 if (!$data instanceof VObject\Component\VCalendar) {
54 throw new VObject\ParseException('Supplied input could not be parsed as VCALENDAR.');
55 }
56
57 foreach($data->children() as $component) {
58 if (!$component instanceof VObject\Component) {
59 continue;
60 }
61
62 // Get all timezones
63 if ($component->name === 'VTIMEZONE') {
64 $this->vtimezones[(string)$component->TZID] = $component;
65 continue;
66 }
67
68 // Get component UID for recurring Events search
69 if(!$component->UID) {
70 $component->UID = sha1(microtime()) . '-vobjectimport';
71 }
72 $uid = (string)$component->UID;
73
74 // Take care of recurring events
75 if (!array_key_exists($uid, $this->objects)) {
76 $this->objects[$uid] = new VCalendar();
77 }
78
79 $this->objects[$uid]->add(clone $component);
80 }
81
82 }
83
84 /**
85 * Every time getNext() is called, a new object will be parsed, until we
86 * hit the end of the stream.
87 *
88 * When the end is reached, null will be returned.
89 *
90 * @return Sabre\VObject\Component|null
91 */
92 public function getNext() {
93
94 if($object=array_shift($this->objects)) {
95
96 // create our baseobject
97 $object->version = '2.0';
98 $object->prodid = '-//Sabre//Sabre VObject ' . VObject\Version::VERSION . '//EN';
99 $object->calscale = 'GREGORIAN';
100
101 // add vtimezone information to obj (if we have it)
102 foreach ($this->vtimezones as $vtimezone) {
103 $object->add($vtimezone);
104 }
105
106 return $object;
107
108 } else {
109
110 return null;
111
112 }
113
114 }
115
116 }