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