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sources/3rdparty/sabre/vobject/lib/Sabre/VObject/Splitter/ICalendar.php 2.75 KB
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03e52840d   Kload   Init 
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  <?php
  
  namespace Sabre\VObject\Splitter;
  
  use Sabre\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.
   *
6d9380f96   Cédric Dupont   Update sources OC... 
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   * @copyright Copyright (C) 2007-2013 fruux GmbH (https://fruux.com/).
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   * @author Dominik Tobschall
   * @author Armin Hackmann
   * @license http://code.google.com/p/sabredav/wiki/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 Sabre\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;
  
          }
  
     }
  
  }