egroupware_official/calendar/inc/class.vCalendar.inc.php

315 lines
6.8 KiB
PHP
Executable File

<?php
/**************************************************************************\
* phpGroupWare - vCalendar *
* http://www.phpgroupware.org *
* Modified by Mark Peters <skeeter@phpgroupware.org> *
* -------------------------------------------- *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
\**************************************************************************/
/* $Id$ */
define('NONE',0);
define('CHAIR',1);
define('REQ-PARTICIPANT',2);
define('OPT-PARTICIPANT',3);
define('NON-PARTICIPANT',4);
define('INDIVIDUAL',1);
define('GROUP',2);
define('RESOURCE',4);
define('ROOM',8);
define('UNKNOWN',16);
class mailto
{
var $user;
var $host;
}
class attendee
{
var $cn = 'Unknown';
var $cutype = 1;
var $role = 2;
var $rsvp = False;
var $mailto;
var $sent_by;
var $delegated_from;
var $delegated_to;
var $member;
var $partstat;
}
class organizer
{
var $cn;
var $cutype = 1;
var $delegated_from;
var $delegated_to;
var $member;
var $partstat;
var $mailto;
var $sent_by;
}
class vCalendar_time {
var $year;
var $month;
var $mday;
var $hour;
var $min;
var $sec;
var $date;
var $allday = False;
}
class vCalendar_event
{
var $prodid;
var $version;
var $method;
var $type;
var $attendee = Array();
var $organizer;
var $dtstart;
var $dtend;
var $location;
var $transp;
var $sequence;
var $uid;
var $dtstamp;
var $description;
var $summary;
var $priority;
var $class;
}
class vCalendar
{
var $event;
function splitdate($value)
{
$dtime = new vCalendar_time;
$dtime->year = intval(substr($value,0,4));
$dtime->month = intval(substr($value,5,2));
$dtime->mday = intval(substr($value,7,2));
$dtime->hour = intval(substr($value,10,2));
$dtime->min = intval(substr($value,12,2));
$dtime->sec = intval(substr($value,14,2));
return $dtime;
}
function split_address($address)
{
$parts = explode('@',$address);
if(count($parts) == 2)
{
$temp_address = new mailto;
$temp_address->user = $parts[0];
$temp_address->host = $parts[1];
return $temp_address;
}
else
{
return False;
}
}
function set_var_subtype(&$event,$majortype,$subtype,$value)
{
if($value != False)
{
$event->${strtolower($majortype)}->${strtolower($subtype)} = $value;
}
}
function unfold(&$vcal_text,$current_line)
{
$next_line = $current_line;
while(ereg("^[ \t]",substr($vcal_text[$next_line + 1],0,1)))
{
$vcal_text[$current_line] = str_replace("\r\n",'',$vcal_text[$current_line]);
$vcal_text[$current_line] .= substr($vcal_text[$next_line + 1],1);
$next_line++;
}
if($next_line != $current_line)
{
for($i=$next_line;$i>$current_line;$i--)
{
unset($vcal_text[$i]);
}
}
}
function strip_quotes($str)
{
if(strpos(' '.$str.' ','"'))
{
$str = substr($str,1,strlen($str)-2);
}
return $str;
}
function strip_param($str)
{
$extra_param = explode(':',$str);
if(count($extra_param) == 1)
{
return $str;
}
else
{
return $extra_param[1];
}
}
function read($vcal_text)
{
for($i=0;$i<count($vcal_text);$i++)
{
if(strlen($vcal_text[$i]) > 75)
{
continue;
}
unfold($vcal_text,$i);
// Example #1
//vcal_text[$i] = 'BEGIN:VCALENDAR'
// Example #2
//vcal_text[$i] = 'METHOD:REQUEST'
// Example #3
//vcal_text[$i] = 'ATTENDEE;CN="John Doe";ROLE=REQ-PARTICIPANT;RSVP=TRUE:MAILTO:john.doe@somewhere.com'
// Example #4
//vcal_text[$i] = 'ORGANIZER:MAILTO:jim.smith@elsewhere.com'
// Example #5
//vcal_text[$i] = 'DTSTART:20010302T150000Z'
// Example #6
//vcal_text[$i] = 'UID:040000008200E00074C5B7101A82E0080000000040A12C0042A2C0010000000000000000100'
//vcal_text[$i+1] = ' 000009BDFF7C7650ED5118DD700805FA71291'
// When unfolded becomes,
//vcal_text[$i] = 'UID:040000008200E00074C5B7101A82E0080000000040A12C0042A2C0010000000000000000100000009BDFF7C7650ED5118DD700805FA71291'
$colon = pos($vcal_text[$i],':');
if($colon == 0)
{
$colon = 65535;
}
$semi_colon = pos($vcal_text[$i],';');
if($semi_colon == 0)
{
$semi_colon = 65535;
}
if($colon == 65535 && $semi_colon == 65535)
{
continue;
}
else
{
$min_value = min($colon,$semi_colon);
$majortype = substr($vcal_text[$i],0,$min_value - 1);
$vcal_text[$i] = substr($vcal_text[$i],$min_value + 1);
$value = $vcal_text[$i];
}
switch(strtolower($majortype))
{
case 'begin':
$event = new vCalendar_event;
if($value != 'VCALENDAR')
{
$event->type = $value;
}
break;
/*
case 'attendee':
$attendee = new attendee;
$att_data = explode(';',substr($vcal_text[$i],9,strlen($vcal_text[$i])));
$c_att_data = count($att_data);
for($k=0;$k<$c_att_data;$k++)
{
if(strpos($att_data[$k],':'))
{
}
elseif(strpos($att_data[$k],'='))
{
$att_att = explode('=',$att_data[$k])
}
}
$event->attendee[] = $attendee;
unset($attendee);
break;
*/
case 'organizer':
$event->${strtolower($majortype)} = new ${strtolower($majortype)};
$param = explode(':',$value);
for($j=0;$j<count($param);$j++)
{
if(strpos($param[$j],'='))
{
$subtype = explode('=',$param[$j]);
$this->set_var_subtype($event,$majortype,$subtype[0],$this->strip_quotes($subtype[1]));
}
else
{
if(strpos($param[$j],'@'))
{
$this->set_var_subtype($event,$majortype,'mailto',$this->split_address($param[$j]));
}
else
{
switch(strtolower($param[$j]))
{
case 'mailto':
$email_addy = $param[$j + 1];
$this->set_var_subtype($event,$majortype,$param[$j++],$this->split_address($email_addy));
break;
default:
$var = $this->strip_param($this->strip_quotes($param[$j + 1]));
$this->set_var_subtype($event,$majortype,$param[$j++],$var);
break;
}
}
}
}
break;
case 'end':
switch(strtolower($value))
{
case 'vevent':
$this->event[] = $event;
unset($event);
break;
case 'vcalendar':
break 2;
}
break;
case 'dtstart':
case 'dtend':
case 'dtstamp':
$event->${strtolower($majortype)} = new vCalendar_time;
$event->${strtolower($majortype)} = $this->splitdate($value);
break;
default:
$event->${strtolower($majortype)} = $value;
break;
}
}
}
}
?>