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