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<?php
/**
* ownCloud
*
* @author Bart Visscher
* @copyright 2011 Bart Visscher bartv@thisnet.nl
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This class provides a streamlined interface to the Sabre VObject classes
*/
class OC_VObject{
/** @var Sabre_VObject_Component */
protected $vobject;
/**
* @returns Sabre_VObject_Component
*/
public function getVObject(){
return $this->vobject;
}
/**
* @brief Parses the VObject
* @param string VObject as string
* @returns Sabre_VObject or null
*/
public static function parse($data){
try {
Sabre_VObject_Reader::$elementMap['LAST-MODIFIED'] = 'Sabre_VObject_Element_DateTime';
$vobject = Sabre_VObject_Reader::read($data);
if ($vobject instanceof Sabre_VObject_Component){
$vobject = new OC_VObject($vobject);
}
return $vobject;
} catch (Exception $e) {
OC_Log::write('vobject', $e->getMessage(), OC_Log::ERROR);
return null;
}
}
/**
* @brief Escapes semicolons
* @param string $value
* @return string
*/
public static function escapeSemicolons($value){
foreach($value as &$i ){
$i = implode("\\\\;", explode(';', $i));
}
return implode(';',$value);
}
/**
* @brief Creates an array out of a multivalue property
* @param string $value
* @return array
*/
public static function unescapeSemicolons($value){
$array = explode(';',$value);
for($i=0;$i<count($array);$i++){
if(substr($array[$i],-2,2)=="\\\\"){
if(isset($array[$i+1])){
$array[$i] = substr($array[$i],0,count($array[$i])-2).';'.$array[$i+1];
unset($array[$i+1]);
}
else{
$array[$i] = substr($array[$i],0,count($array[$i])-2).';';
}
$i = $i - 1;
}
}
return $array;
}
/**
* Constuctor
* @param Sabre_VObject_Component or string
*/
public function __construct($vobject_or_name){
if (is_object($vobject_or_name)){
$this->vobject = $vobject_or_name;
} else {
$this->vobject = new Sabre_VObject_Component($vobject_or_name);
}
}
public function add($item, $itemValue = null){
if ($item instanceof OC_VObject){
$item = $item->getVObject();
}
$this->vobject->add($item, $itemValue);
}
/**
* @brief Add property to vobject
* @param object $name of property
* @param object $value of property
* @param object $parameters of property
* @returns Sabre_VObject_Property newly created
*/
public function addProperty($name, $value, $parameters=array()){
if(is_array($value)){
$value = OC_VObject::escapeSemicolons($value);
}
$property = new Sabre_VObject_Property( $name, $value );
foreach($parameters as $name => $value){
$property->parameters[] = new Sabre_VObject_Parameter($name, $value);
}
$this->vobject->add($property);
return $property;
}
public function setUID(){
$uid = substr(md5(rand().time()),0,10);
$this->vobject->add('UID',$uid);
}
public function setString($name, $string){
if ($string != ''){
$string = strtr($string, array("\r\n"=>"\n"));
$this->vobject->__set($name, $string);
}else{
$this->vobject->__unset($name);
}
}
/**
* Sets or unsets the Date and Time for a property.
* When $datetime is set to 'now', use the current time
* When $datetime is null, unset the property
*
* @param string property name
* @param DateTime $datetime
* @param int $dateType
* @return void
*/
public function setDateTime($name, $datetime, $dateType=Sabre_VObject_Element_DateTime::LOCALTZ){
if ($datetime == 'now'){
$datetime = new DateTime();
}
if ($datetime instanceof DateTime){
$datetime_element = new Sabre_VObject_Element_DateTime($name);
$datetime_element->setDateTime($datetime, $dateType);
$this->vobject->__set($name, $datetime_element);
}else{
$this->vobject->__unset($name);
}
}
public function getAsString($name){
return $this->vobject->__isset($name) ?
$this->vobject->__get($name)->value :
'';
}
public function getAsArray($name){
$values = array();
if ($this->vobject->__isset($name)){
$values = explode(',', $this->getAsString($name));
$values = array_map('trim', $values);
}
return $values;
}
public function &__get($name){
if ($name == 'children'){
return $this->vobject->children;
}
$return = $this->vobject->__get($name);
if ($return instanceof Sabre_VObject_Component){
$return = new OC_VObject($return);
}
return $return;
}
public function __set($name, $value){
return $this->vobject->__set($name, $value);
}
public function __unset($name){
return $this->vobject->__unset($name);
}
public function __isset($name){
return $this->vobject->__isset($name);
}
public function __call($function,$arguments){
return call_user_func_array(array($this->vobject, $function), $arguments);
}
}
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