adding an iterator for iCal files to minimize memory footprint on import of huge iCal files (not yet used for iCal data supplied as string, eg. from SyncML, as calendar_ical::importVCal uses count() and array access to returned components/events, and not just looping over it via foreach)

calendar/inc/class.calendar_ical.inc.php

@@ -127,11 +127,11 @@ class calendar_ical extends calendar_boupdate
 	/**
 	 * user preference: Use this timezone for import from and export to device
 	 *
-	 * @var mixed
 	 * === false => use event's TZ
 	 * === null  => export in UTC
 	 * string    => device TZ
 	 *
+	 * @var string|boolean
 	 */
 	var $tzid = null;
 
@@ -980,6 +980,13 @@ class calendar_ical extends calendar_boupdate
 		return $time->format('Ymd\THis');
 	}
 
+	/**
+	 * Number of events imported in last call to importVCal
+	 *
+	 * @var int
+	 */
+	var $events_imported;
+
 	/**
 	 * Import an iCal
 	 *
@@ -997,12 +1004,15 @@ class calendar_ical extends calendar_boupdate
 	 */
 	function importVCal($_vcalData, $cal_id=-1, $etag=null, $merge=false, $recur_date=0, $principalURL='', $user=null, $charset=null)
 	{
+		$this->events_imported = 0;
+
 		if (!is_array($this->supportedFields)) $this->setSupportedFields();
 
 		if (!($events = $this->icaltoegw($_vcalData, $principalURL, $charset)))
 		{
 			return false;
 		}
+		if (!is_array($events)) $cal_id = -1;	// just to be sure, as iterator does NOT allow array access (eg. $events[0])
 
 		if ($cal_id > 0)
 		{
@@ -1036,6 +1046,8 @@ class calendar_ical extends calendar_boupdate
 		}
 		foreach ($events as $event)
 		{
+			++$this->events_imported;
+
 			if ($this->so->isWholeDay($event)) $event['whole_day'] = true;
 			if (is_array($event['category']))
 			{
@@ -1648,6 +1660,10 @@ class calendar_ical extends calendar_boupdate
 					array2string($event_info['stored_event'])."\n",3,$this->logfile);
 			}
 		}
+		if (is_resource($_vcalData))
+		{
+			date_default_timezone_set($GLOBALS['egw_info']['server']['server_timezone']);
+		}
 		return $return_id;
 	}
 
@@ -2020,11 +2036,11 @@ class calendar_ical extends calendar_boupdate
 	/**
 	 * Convert vCalendar data in EGw events
 	 *
-	 * @param string $_vcalData
+	 * @param string|resource $_vcalData
 	 * @param string $principalURL='' Used for CalDAV imports
 	 * @param string $charset  The encoding charset for $text. Defaults to
      *                         utf-8 for new format, iso-8859-1 for old format.
-	 * @return array|boolean events on success, false on failure
+	 * @return Iterator|array|boolean Iterator if resource given or array of events on success, false on failure
 	 */
 	function icaltoegw($_vcalData, $principalURL='', $charset=null)
 	{
@@ -2034,8 +2050,6 @@ class calendar_ical extends calendar_boupdate
 				array2string($_vcalData)."\n",3,$this->logfile);
 		}
 
-		$events = array();
-
 		if ($this->tzid)
 		{
 			$tzid = $this->tzid;
@@ -2047,6 +2061,14 @@ class calendar_ical extends calendar_boupdate
 
 		date_default_timezone_set($tzid);
 
+		if (!is_array($this->supportedFields)) $this->setSupportedFields();
+
+		// we use egw_ical_iterator only on resources, as calling importVCal() accesses single events like an array (eg. $events[0])
+		if (is_resource($_vcalData))
+		{
+			return new egw_ical_iterator($_vcalData,'VCALENDAR',$charset,array($this,'_ical2egw_callback'),array($tzid,$principalURL));
+		}
+		$events = array();
 		$vcal = new Horde_iCalendar;
 		if (!$vcal->parsevCalendar($_vcalData, 'VCALENDAR', $charset))
 		{
@@ -2062,60 +2084,69 @@ class calendar_ical extends calendar_boupdate
 			return false;
 		}
 		$version = $vcal->getAttribute('VERSION');
-		if (!is_array($this->supportedFields)) $this->setSupportedFields();
 
-		foreach ($vcal->getComponents() as $component)
+		foreach ($vcal->getComponents() as $n => $component)
 		{
-			if (is_a($component, 'Horde_iCalendar_vevent'))
+			if (($event = $this->_ical2egw_callback($component,$tzid,$principalURL)))
 			{
-				if (($event = $this->vevent2egw($component, $version, $this->supportedFields, $principalURL)))
-				{
-					//common adjustments
-					if ($this->productManufacturer == '' && $this->productName == ''
-						&& !empty($event['recur_enddate']))
-					{
-						// syncevolution needs an adjusted recur_enddate
-						$event['recur_enddate'] = (int)$event['recur_enddate'] + 86400;
-					}
- 					if ($event['recur_type'] != MCAL_RECUR_NONE)
- 					{
- 						// No reference or RECURRENCE-ID for the series master
- 						$event['reference'] = $event['recurrence'] = 0;
- 					}
-
- 					// handle the alarms
- 					$alarms = $event['alarm'];
-					foreach ($component->getComponents() as $valarm)
-					{
-						if (is_a($valarm, 'Horde_iCalendar_valarm'))
-						{
-							$this->valarm2egw($alarms, $valarm);
-						}
-					}
-					$event['alarm'] = $alarms;
-					if ($this->tzid || empty($event['tzid']))
-					{
-						$event['tzid'] = $tzid;
-					}
-
 					$events[] = $event;
-				}
-			}
-			else
-			{
-				if ($this->log)
-				{
-					error_log(__FILE__.'['.__LINE__.'] '.__METHOD__.'()' .
-						get_class($component)." found\n",3,$this->logfile);
-				}
 			}
 		}
-
 		date_default_timezone_set($GLOBALS['egw_info']['server']['server_timezone']);
 
 		return $events;
 	}
 
+	/**
+	 * Callback for egw_ical_iterator to convert Horde_iCalendar_vevent to EGw event array
+	 *
+	 * @param Horde_iCalendar $component
+	 * @param string $tzid timezone
+	 * @param string $principalURL='' Used for CalDAV imports
+	 * @return array|boolean event array or false if $component is no Horde_iCalendar_vevent
+	 */
+	function _ical2egw_callback(Horde_iCalendar $component,$tzid,$principalURL='')
+	{
+		//unset($component->_container); _debug_array($component);
+
+		if (!is_a($component, 'Horde_iCalendar_vevent') ||
+			!($event = $this->vevent2egw($component, $component->getAttribute('VERSION'), $this->supportedFields, $principalURL)))
+		{
+			if ($this->log)
+			{
+				error_log(__FILE__.'['.__LINE__.'] '.__METHOD__.'() '.get_class($component)." found\n",3,$this->logfile);
+			}
+			return false;
+		}
+		//common adjustments
+		if ($this->productManufacturer == '' && $this->productName == '' && !empty($event['recur_enddate']))
+		{
+			// syncevolution needs an adjusted recur_enddate
+			$event['recur_enddate'] = (int)$event['recur_enddate'] + 86400;
+		}
+		if ($event['recur_type'] != MCAL_RECUR_NONE)
+		{
+			// No reference or RECURRENCE-ID for the series master
+			$event['reference'] = $event['recurrence'] = 0;
+		}
+
+		// handle the alarms
+		$alarms = $event['alarm'];
+		foreach ($component->getComponents() as $valarm)
+		{
+			if (is_a($valarm, 'Horde_iCalendar_valarm'))
+			{
+				$this->valarm2egw($alarms, $valarm);
+			}
+		}
+		$event['alarm'] = $alarms;
+		if ($this->tzid || empty($event['tzid']))
+		{
+			$event['tzid'] = $tzid;
+		}
+		return $event;
+	}
+
 	/**
 	 * Parse a VEVENT
 	 *
@@ -2138,7 +2169,8 @@ class calendar_ical extends calendar_boupdate
 			return false;
 		}
 
-		if (isset($GLOBALS['egw_info']['user']['preferences']['syncml']['minimum_uid_length'])) {
+		if (!empty($GLOBALS['egw_info']['user']['preferences']['syncml']['minimum_uid_length']))
+		{
 			$minimum_uid_length = $GLOBALS['egw_info']['user']['preferences']['syncml']['minimum_uid_length'];
 		}
 		else
@@ -2780,7 +2812,6 @@ class calendar_ical extends calendar_boupdate
 					$event['modified'] = $attributes['value'];
 			}
 		}
-
 		// check if the entry is a birthday
 		// this field is only set from NOKIA clients
 		$agendaEntryType = $component->getAttribute('X-EPOCAGENDAENTRYTYPE');

calendar/inc/class.calendar_uiforms.inc.php

@@ -1642,14 +1642,20 @@ class calendar_uiforms extends calendar_ui
 		{
 			if (is_array($content['ical_file']) && is_uploaded_file($content['ical_file']['tmp_name']))
 			{
-				if (!ExecMethod('calendar.calendar_ical.importVCal',file_get_contents($content['ical_file']['tmp_name'])))
+				@set_time_limit(0);	// try switching execution time limit off
+				$start = microtime(true);
+
+				$calendar_ical = new calendar_ical;
+				if (!$calendar_ical->importVCal($f=fopen($content['ical_file']['tmp_name'],'r')))
 				{
 					$msg = lang('Error: importing the iCal');
 				}
 				else
 				{
-					$msg = lang('iCal successful imported');
+					$msg = lang('iCal successful imported').' '.lang('(%1 events in %2 seconds)',
+						$calendar_ical->events_imported,number_format(microtime(true)-$start,1));
 				}
+				if ($f) fclose($f);
 			}
 			else
 			{
@@ -1660,7 +1666,7 @@ class calendar_uiforms extends calendar_ui
 			'msg' => $msg,
 		);
 		$GLOBALS['egw_info']['flags']['app_header'] = lang('calendar') . ' - ' . lang('iCal Import');
-		$etpl = CreateObject('etemplate.etemplate','calendar.import');
+		$etpl = new etemplate('calendar.import');
 
 		$etpl->exec('calendar.calendar_uiforms.import',$content);
 	}

phpgwapi/inc/class.egw_ical_iterator.inc.php

@@ -0,0 +1,439 @@
+<?php
+/**
+ * EGroupware: Iterator for iCal files
+ *
+ * @link http://www.egroupware.org
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @package api
+ * @subpackage groupdav
+ * @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @copyright (c) 2010 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @version $Id$
+ */
+
+// required for tests at the end of this file (run if file called directly)
+if (isset($_SERVER['SCRIPT_FILENAME']) && $_SERVER['SCRIPT_FILENAME'] == __FILE__)
+{
+	$GLOBALS['egw_info'] = array(
+		'flags' => array(
+			'currentapp' => 'calendar',
+		),
+	);
+	include('../../header.inc.php');
+}
+require_once EGW_API_INC.'/horde/lib/core.php';
+
+/**
+ * Iterator for iCal files
+ *
+ * try {
+ * 		$ical_file = fopen($path,'r');
+ * 		$ical_it = new egw_ical_iterator($ical_file,'VCALENDAR');
+ * }
+ * catch (Exception $e)
+ * {
+ * 		// could not open $path or no valid iCal file
+ * }
+ * foreach($ical_it as $vevent)
+ * {
+ * 		// do something with $vevent
+ * }
+ * fclose($ical_file)
+ */
+class egw_ical_iterator extends Horde_iCalendar implements Iterator
+{
+	/**
+	 * File we work on
+	 *
+	 * @var resource
+	 */
+	protected $ical_file;
+
+	/**
+	 * Base name of container, eg. 'VCALENDAR', as passed to the constructor
+	 *
+	 * @var string
+	 */
+	protected $base;
+
+	/**
+	 * Does ical_file contain a container: BEGIN:$base ... END:$base
+	 *
+	 * @var boolean
+	 */
+	protected $container;
+
+	/**
+	 * Charset passed to the constructor
+	 *
+	 * @var string
+	 */
+	protected $charset;
+
+	/**
+	 * Current component, as it get's returned by current() method
+	 *
+	 * @var Horde_iCalendar
+	 */
+	protected $component;
+
+	/**
+	 * Callback to call with component in current() method, if returning false, item get's ignored
+	 *
+	 * @var callback
+	 */
+	protected $callback;
+
+	/**
+	 * Further parameters for the callback, 1. parameter is component
+	 *
+	 * @var array
+	 */
+	protected $callback_params = array();
+
+	/**
+	 * Constructor
+	 *
+	 * @param string|resource $ical_file file opened for reading or string
+	 * @param string $base='VCALENDAR' container
+	 * @param string $charset=null
+	 * @param callback $callback=null callback to call with component in current() method, if returning false, item get's ignored
+	 * @param array $callback_params=array() further parameters for the callback, 1. parameter is component
+	 */
+	public function __construct($ical_file,$base='VCALENDAR',$charset=null,$callback=null,array $callback_params=array())
+	{
+		// call parent constructor
+		parent::Horde_iCalendar();
+
+		$this->base = $base;
+		$this->charset = $charset;
+		if (is_callable($callback))
+		{
+			$this->callback = $callback;
+			$this->callback_params = $callback_params;
+		}
+		if (is_string($ical_file))
+		{
+			$GLOBALS[$name = md5(microtime(true))] =& $ical_file;
+			require_once(EGW_API_INC.'/class.global_stream_wrapper.inc.php');
+			$this->ical_file = fopen('global://'.$name,'r');
+			unset($GLOBALS[$name]);
+			// alternative: $this->unread_lines = explode("\n",$ical_file); return;
+			// uses less memory, but it can NOT rewind
+
+			//error_log(__METHOD__."(,'$base','$charset') using global stream wrapper fopen('global://$name')=".array2string($this->ical_file));
+		}
+		else
+		{
+			$this->ical_file = $ical_file;
+		}
+		if (!is_resource($this->ical_file))
+		{
+			throw new egw_exception_wrong_parameter(__METHOD__.'($ical_file, ...) NO resource! $ical_file='.substr(array2string($ical_file),0,100));
+		}
+	}
+
+	/**
+	 * Stack with not yet processed lines
+	 *
+	 * @var string
+	 */
+	protected $unread_lines = array();
+
+	/**
+	 * Read and return one line from file (or line-buffer)
+	 *
+	 * We do NOT handle folding, that's done by Horde_iCalendar and not necessary for us as BEGIN: or END: component is never folded
+	 *
+	 * @return string|boolean string with line or false if end-of-file or end-of-container reached
+	 */
+	protected function read_line()
+	{
+		if ($this->unread_lines)
+		{
+			$line = array_shift($this->unread_lines);
+		}
+		elseif(feof($this->ical_file))
+		{
+			$line = false;
+		}
+		else
+		{
+			$line = fgets($this->ical_file);
+		}
+		// check if end of container reached
+		if ($this->container && $line && substr($line,0,4+strlen($this->base)) === 'END:'.$this->base)
+		{
+			$this->unread_line($line);	// put back end-of-container, to continue to return false
+			$line = false;
+		}
+		//error_log(__METHOD__."() returning ".($line === false ? 'FALSE' : "'$line'"));
+
+		return $line;
+	}
+
+	/**
+	 * Take back on line, already read with read_line
+	 *
+	 * @param string $line
+	 */
+	protected function unread_line($line)
+	{
+		//error_log(__METHOD__."('$line')");
+		array_unshift($this->unread_lines,$line);
+	}
+
+	/**
+	 * Return the current element
+	 *
+	 * @return Horde_iCalendar or whatever a given callback returns
+	 */
+	public function current()
+	{
+		//error_log(__METHOD__."() returning a ".gettype($this->component));
+		if ($this->callback)
+		{
+			do {
+				if ($ret === false) $this->next();
+				$params = $this->callback_params;
+				array_unshift($params,$this->component);
+			}
+			while(($ret = call_user_func_array($this->callback,$params)) === false);
+
+			return $ret;
+		}
+		return $this->component;
+	}
+
+	/**
+	 * Return the key of the current element
+	 *
+	 * @return int|string
+	 */
+	public function key()
+	{
+		//error_log(__METHOD__."() returning ".$this->component->getAttribute('UID'));
+		return $this->component ? $this->component->getAttribute('UID') : false;
+	}
+
+	/**
+	 * Move forward to next component (called after each foreach loop)
+	 */
+	public function next()
+	{
+		unset($this->component);
+
+		while (($line = $this->read_line()) && substr($line,0,6) !== 'BEGIN:')
+		{
+			// ignore it
+		}
+		if ($line === false)	// end-of-file or end-of-container
+		{
+			$this->component = false;
+			return;
+		}
+		$type = substr(trim($line),6);
+
+		//error_log(__METHOD__."() found $type component");
+
+		$data = $line;
+		while (($line = $this->read_line()) && substr($line,0,4+strlen($type)) !== 'END:'.$type)
+		{
+			$data .= $line;
+		}
+		$data .= $line;
+
+		$this->component = &Horde_iCalendar::newComponent($type, $this);
+		//error_log(__METHOD__."() this->component = Horde_iCalendar::newComponent('$type', \$this) = ".array2string($this->component));
+        if ($this->component === false)
+        {
+        	error_log(__METHOD__."() Horde_iCalendar::newComponent('$type', \$this) returned FALSE");
+            //return PEAR::raiseError("Unable to create object for type $type");
+        }
+		//error_log(__METHOD__."() about to call parsevCalendar('".substr($data,0,100)."...','$type','$this->charset')");
+		$this->component->parsevCalendar($data, $type, $this->charset);
+
+		// VTIMEZONE components are NOT returned, they are only processed internally
+		if ($type == 'VTIMEZONE')
+		{
+			$this->addComponent($this->component);
+			// calling ourself recursive, to set next non-VTIMEZONE component
+			$this->next();
+		}
+	}
+
+	/**
+	 * Rewind the Iterator to the first element (called at beginning of foreach loop)
+	 */
+	public function rewind()
+	{
+		fseek($this->ical_file,0,SEEK_SET);
+
+		// advance to begin of container
+		while(($line = $this->read_line()) && substr($line,0,6+strlen($this->base)) !== 'BEGIN:'.$this->base)
+		{
+
+		}
+		// if no container start found --> use whole file (rewind) and set container marker
+		if (!($this->container = $line !== false))
+		{
+			fseek($this->ical_file,0,SEEK_SET);
+		}
+		//error_log(__METHOD__."() $this->base container ".($this->container ? 'found' : 'NOT found'));
+
+		$data = $line;
+		// advance to first component
+		while (($line = $this->read_line()) && substr($line,0,6) !== 'BEGIN:')
+		{
+			if (preg_match('/^VERSION:(\d\.\d)\s*$/ism', $line, $matches))
+			{
+				// define the version asap
+				$this->setAttribute('VERSION', $matches[1]);
+			}
+			$data .= $line;
+		}
+		// fake end of container, to get it parsed by Horde code
+		if ($this->container)
+		{
+			$data .= "END:$this->base\n";
+			//error_log(__METHOD__."() about to call this->parsevCalendar('$data','$this->base','$this->charset')");
+			$this->parsevCalendar($data,$this->base,$this->charset);
+		}
+		if ($line) $this->unread_line($line);
+
+		// advance to first element
+		$this->next();
+	}
+
+	/**
+	 * Checks if current position is valid
+	 *
+	 * @return boolean
+	 */
+	public function valid ()
+	{
+		//error_log(__METHOD__."() returning ".(is_a($this->component,'Horde_iCalendar') ? 'TRUE' : 'FALSE').' get_class($this->component)='.get_class($this->component));
+		return is_a($this->component,'Horde_iCalendar');
+	}
+}
+
+// some tests run if file called directly
+if (isset($_SERVER['SCRIPT_FILENAME']) && $_SERVER['SCRIPT_FILENAME'] == __FILE__)
+{
+	$ical_file = 'BEGIN:VCALENDAR
+PRODID:-//Microsoft Corporation//Outlook 12.0 MIMEDIR//EN
+VERSION:2.0
+METHOD:PUBLISH
+X-CALSTART:19980101T000000
+X-WR-RELCALID:{0000002E-1BB2-8F0F-1203-47B98FEEF211}
+X-WR-CALNAME:Fxlxcxtxsxxxxxxxxxxxxx
+X-PRIMARY-CALENDAR:TRUE
+X-OWNER;CN="Fxlxcxtxsxxxxxxx":mailto:xexixixax.xuxaxa@xxxxxxxxxxxxxxx-berli
+        n.de
+X-MS-OLK-WKHRSTART;TZID="Westeuropäische Normalzeit":080000
+X-MS-OLK-WKHREND;TZID="Westeuropäische Normalzeit":170000
+X-MS-OLK-WKHRDAYS:MO,TU,WE,TH,FR
+BEGIN:VTIMEZONE
+TZID:Westeuropäische Normalzeit
+BEGIN:STANDARD
+DTSTART:16011028T030000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+END:STANDARD
+BEGIN:DAYLIGHT
+DTSTART:16010325T020000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+END:DAYLIGHT
+END:VTIMEZONE
+BEGIN:VEVENT
+ATTENDEE;CN=Vorstand;RSVP=TRUE:mailto:xoxsxaxd@xxxxxxxxxxxxxxx-berlin.de
+ATTENDEE;CN=\'voxrxtx@xxxxxxxx.de\';RSVP=TRUE:mailto:voxrxtx@xxxxxxxx.de
+ATTENDEE;CN=Pressestelle;RSVP=TRUE:mailto:xrxsxexxexlx@xxxxxxxxxxxxxxx-berl
+        in.de
+ATTENDEE;CN="Dxuxe Nxcxxlxxx";ROLE=OPT-PARTICIPANT;RSVP=TRUE:mailto:xjxkx.x
+        ixkxxsxn@xxxxxxxxxxxxxxx-berlin.de
+ATTENDEE;CN="Mxxxaxx Sxxäxxr";ROLE=OPT-PARTICIPANT;RSVP=TRUE:mailto:xixhxe
+        x.xcxaxfxr@xxxxxxxxxxxxxxx-berlin.de
+CLASS:PUBLIC
+CREATED:20100408T232652Z
+DESCRIPTION:\n
+DTEND;TZID="Westeuropäische Normalzeit":20100414T210000
+DTSTAMP:20100406T125856Z
+DTSTART;TZID="Westeuropäische Normalzeit":20100414T190000
+LAST-MODIFIED:20100408T232653Z
+LOCATION:Axtx Fxuxrxaxhx\, Axex-Sxrxnxxxxxxxxxxxxxx
+ORGANIZER;CN="Exixaxexhxxxxxxxxxxxräxx":mailto:xxx.xxxxxxxxxxx@xxxxxxxxxxx
+        xxxx-berlin.de
+PRIORITY:5
+RECURRENCE-ID;TZID="Westeuropäische Normalzeit":20100414T190000
+SEQUENCE:0
+SUMMARY;LANGUAGE=de:Aktualisiert: LA  - mit Ramona
+TRANSP:OPAQUE
+UID:040000008200E00074C5B7101A82E00800000000D0AFE96CB462CA01000000000000000
+        01000000019F8AF4D13C91844AA9CE63190D3408D
+X-ALT-DESC;FMTTYPE=text/html:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//E
+        N">\n<HTML>\n<HEAD>\n<META NAME="Generator" CONTENT="MS Exchange Server ve
+        rsion 08.00.0681.000">\n<TITLE></TITLE>\n</HEAD>\n<BODY>\n<!-- Converted f
+        rom text/rtf format -->\n<BR>\n\n</BODY>\n</HTML>
+X-MICROSOFT-CDO-BUSYSTATUS:TENTATIVE
+X-MICROSOFT-CDO-IMPORTANCE:1
+X-MICROSOFT-DISALLOW-COUNTER:FALSE
+X-MS-OLK-ALLOWEXTERNCHECK:TRUE
+X-MS-OLK-APPTSEQTIME:20091111T085039Z
+X-MS-OLK-AUTOSTARTCHECK:FALSE
+X-MS-OLK-CONFTYPE:0
+END:VEVENT
+BEGIN:VEVENT
+CLASS:PUBLIC
+CREATED:20100331T125400Z
+DTEND:20100409T110000Z
+DTSTAMP:20100409T123209Z
+DTSTART:20100409T080000Z
+LAST-MODIFIED:20100331T125400Z
+PRIORITY:5
+SEQUENCE:0
+SUMMARY;LANGUAGE=de:Marissa
+TRANSP:OPAQUE
+UID:AAAAAEyulq85HfZCtWDOITo5tZQHABE65KS0gg5Fu6X1g2z9eWUAAAAA3BAAABE65KS0gg5
+        Fu6X1g2z9eWUAAAIQ6D0AAA==
+X-MICROSOFT-CDO-BUSYSTATUS:BUSY
+X-MICROSOFT-CDO-IMPORTANCE:1
+X-MS-OLK-ALLOWEXTERNCHECK:TRUE
+X-MS-OLK-AUTOSTARTCHECK:FALSE
+X-MS-OLK-CONFTYPE:0
+END:VEVENT
+BEGIN:VEVENT
+CLASS:PUBLIC
+CREATED:20100331T124848Z
+DTEND;VALUE=DATE:20100415
+DTSTAMP:20100409T123209Z
+DTSTART;VALUE=DATE:20100414
+LAST-MODIFIED:20100331T124907Z
+PRIORITY:5
+SEQUENCE:0
+SUMMARY;LANGUAGE=de:MELANIE wieder da
+TRANSP:TRANSPARENT
+UID:AAAAAEyulq85HfZCtWDOITo5tZQHABE65KS0gg5Fu6X1g2z9eWUAAAAA3BAAABE65KS0gg5
+        Fu6X1g2z9eWUAAAIQ6DsAAA==
+X-MICROSOFT-CDO-BUSYSTATUS:FREE
+X-MICROSOFT-CDO-IMPORTANCE:1
+X-MS-OLK-ALLOWEXTERNCHECK:TRUE
+X-MS-OLK-AUTOSTARTCHECK:FALSE
+X-MS-OLK-CONFTYPE:0
+END:VEVENT
+END:VCALENDAR
+';
+	//$ical_file = fopen('/tmp/KalenderFelicitasKubala.ics');
+	if (!is_resource($ical_file)) echo "<pre>$ical_file</pre>\n";
+	//$calendar_ical = new calendar_ical();
+	//$calendar_ical->setSupportedFields('file');
+	$ical_it = new egw_ical_iterator($ical_file);//,'VCALENDAR','iso-8859-1',array($calendar_ical,'_ical2egw_callback'),array('Europe/Berlin'));
+	foreach($ical_it as $uid => $vevent)
+	{
+		echo "$uid<pre>".print_r($vevent,true)."</pre>\n";
+	}
+	if (is_resource($ical_file)) fclose($ical_file);
+}