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Diffstat (limited to 'libcalendaring/lib/OldSabre/VObject/Splitter/ICalendar.php')
-rw-r--r--libcalendaring/lib/OldSabre/VObject/Splitter/ICalendar.php111
1 files changed, 111 insertions, 0 deletions
diff --git a/libcalendaring/lib/OldSabre/VObject/Splitter/ICalendar.php b/libcalendaring/lib/OldSabre/VObject/Splitter/ICalendar.php
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+++ b/libcalendaring/lib/OldSabre/VObject/Splitter/ICalendar.php
@@ -0,0 +1,111 @@
+<?php
+
+namespace OldSabre\VObject\Splitter;
+
+use OldSabre\VObject;
+
+/**
+ * Splitter
+ *
+ * This class is responsible for splitting up iCalendar objects.
+ *
+ * This class expects a single VCALENDAR object with one or more
+ * calendar-objects inside. Objects with identical UID's will be combined into
+ * a single object.
+ *
+ * @copyright Copyright (C) 2011-2015 fruux GmbH (https://fruux.com/).
+ * @author Dominik Tobschall
+ * @author Armin Hackmann
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class ICalendar implements SplitterInterface {
+
+ /**
+ * Timezones
+ *
+ * @var array
+ */
+ protected $vtimezones = array();
+
+ /**
+ * iCalendar objects
+ *
+ * @var array
+ */
+ protected $objects = array();
+
+ /**
+ * Constructor
+ *
+ * The splitter should receive an readable file stream as it's input.
+ *
+ * @param resource $input
+ */
+ public function __construct($input) {
+
+ $data = VObject\Reader::read(stream_get_contents($input));
+ $vtimezones = array();
+ $components = array();
+
+ foreach($data->children as $component) {
+ if (!$component instanceof VObject\Component) {
+ continue;
+ }
+
+ // Get all timezones
+ if ($component->name === 'VTIMEZONE') {
+ $this->vtimezones[(string)$component->TZID] = $component;
+ continue;
+ }
+
+ // Get component UID for recurring Events search
+ if($component->UID) {
+ $uid = (string)$component->UID;
+ } else {
+ // Generating a random UID
+ $uid = sha1(microtime()) . '-vobjectimport';
+ }
+
+ // Take care of recurring events
+ if (!array_key_exists($uid, $this->objects)) {
+ $this->objects[$uid] = VObject\Component::create('VCALENDAR');
+ }
+
+ $this->objects[$uid]->add(clone $component);
+ }
+
+ }
+
+ /**
+ * Every time getNext() is called, a new object will be parsed, until we
+ * hit the end of the stream.
+ *
+ * When the end is reached, null will be returned.
+ *
+ * @return OldSabre\VObject\Component|null
+ */
+ public function getNext() {
+
+ if($object=array_shift($this->objects)) {
+
+ // create our baseobject
+ $object->version = '2.0';
+ $object->prodid = '-//Sabre//Sabre VObject ' . VObject\Version::VERSION . '//EN';
+ $object->calscale = 'GREGORIAN';
+
+ // add vtimezone information to obj (if we have it)
+ foreach ($this->vtimezones as $vtimezone) {
+ $object->add($vtimezone);
+ }
+
+ return $object;
+
+ } else {
+
+ return null;
+
+ }
+
+ }
+
+}

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