Revert "remove the 3rdparty files. everything is now in https://gitorious.org/owncloud/3rdparty"

This reverts commit dccdeca2581f705c69eb4266aa646173f588a9de.

12 files changed, 1629 insertions, 0 deletions

diff --git a/3rdparty/Sabre/VObject/Component.php b/3rdparty/Sabre/VObject/Component.php
new file mode 100644
index 00000000000..47cf9f3d812
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Component.php
@@ -0,0 +1,254 @@
+<?php
+
+/**
+ * VObject Component
+ *
+ * This class represents a VCALENDAR/VCARD component. A component is for example
+ * VEVENT, VTODO and also VCALENDAR. It starts with BEGIN:COMPONENTNAME and 
+ * ends with END:COMPONENTNAME
+ *
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_Component extends Sabre_VObject_Element {
+
+    /**
+     * Name, for example VEVENT 
+     * 
+     * @var string 
+     */
+    public $name;
+
+    /**
+     * Children properties and components 
+     * 
+     * @var array
+     */
+    public $children = array();
+
+
+    /**
+     * Creates a new component.
+     *
+     * By default this object will iterate over its own children, but this can 
+     * be overridden with the iterator argument
+     * 
+     * @param string $name 
+     * @param Sabre_VObject_ElementList $iterator
+     */
+    public function __construct($name, Sabre_VObject_ElementList $iterator = null) {
+
+        $this->name = strtoupper($name);
+        if (!is_null($iterator)) $this->iterator = $iterator;
+
+    }
+
+    /**
+     * Turns the object back into a serialized blob. 
+     * 
+     * @return string 
+     */
+    public function serialize() {
+
+        $str = "BEGIN:" . $this->name . "\r\n";
+        foreach($this->children as $child) $str.=$child->serialize();
+        $str.= "END:" . $this->name . "\r\n";
+        
+        return $str;
+
+    }
+
+
+    /**
+     * Adds a new componenten or element
+     *
+     * You can call this method with the following syntaxes:
+     *
+     * add(Sabre_VObject_Element $element)
+     * add(string $name, $value)
+     *
+     * The first version adds an Element
+     * The second adds a property as a string. 
+     * 
+     * @param mixed $item 
+     * @param mixed $itemValue 
+     * @return void
+     */
+    public function add($item, $itemValue = null) {
+
+        if ($item instanceof Sabre_VObject_Element) {
+            if (!is_null($itemValue)) {
+                throw new InvalidArgumentException('The second argument must not be specified, when passing a VObject');
+            }
+            $item->parent = $this;
+            $this->children[] = $item;
+        } elseif(is_string($item)) {
+
+            if (!is_scalar($itemValue)) {
+                throw new InvalidArgumentException('The second argument must be scalar');
+            }
+            $item = new Sabre_VObject_Property($item,$itemValue);
+            $item->parent = $this;
+            $this->children[] = $item;
+
+        } else {
+            
+            throw new InvalidArgumentException('The first argument must either be a Sabre_VObject_Element or a string');
+
+        }
+
+    }
+
+    /**
+     * Returns an iterable list of children 
+     * 
+     * @return Sabre_VObject_ElementList 
+     */
+    public function children() {
+
+        return new Sabre_VObject_ElementList($this->children);
+
+    }
+
+    /**
+     * Returns an array with elements that match the specified name.
+     *
+     * This function is also aware of MIME-Directory groups (as they appear in 
+     * vcards). This means that if a property is grouped as "HOME.EMAIL", it 
+     * will also be returned when searching for just "EMAIL". If you want to 
+     * search for a property in a specific group, you can select on the entire 
+     * string ("HOME.EMAIL"). If you want to search on a specific property that 
+     * has not been assigned a group, specify ".EMAIL".
+     *
+     * Keys are retained from the 'children' array, which may be confusing in 
+     * certain cases. 
+     *
+     * @param string $name 
+     * @return array 
+     */
+    public function select($name) {
+
+        $group = null;
+        $name = strtoupper($name);
+        if (strpos($name,'.')!==false) {
+            list($group,$name) = explode('.', $name, 2);
+        }
+
+        $result = array();
+        foreach($this->children as $key=>$child) {
+
+            if (
+                strtoupper($child->name) === $name &&
+                (is_null($group) || ( $child instanceof Sabre_VObject_Property && strtoupper($child->group) === $group))
+            ) {
+                
+                $result[$key] = $child;
+
+            }
+        }
+
+        reset($result);
+        return $result;
+
+    }
+
+    /* Magic property accessors {{{ */
+
+    /**
+     * Using 'get' you will either get a propery or component, 
+     *
+     * If there were no child-elements found with the specified name,
+     * null is returned.
+     * 
+     * @param string $name 
+     * @return void
+     */
+    public function __get($name) {
+
+        $matches = $this->select($name);
+        if (count($matches)===0) {
+            return null;
+        } else {
+            $firstMatch = current($matches);
+            $firstMatch->setIterator(new Sabre_VObject_ElementList(array_values($matches)));
+            return $firstMatch;
+        }
+
+    }
+
+    /**
+     * This method checks if a sub-element with the specified name exists. 
+     * 
+     * @param string $name 
+     * @return bool 
+     */
+    public function __isset($name) {
+
+        $matches = $this->select($name);
+        return count($matches)>0;
+
+    }
+
+    /**
+     * Using the setter method you can add properties or subcomponents
+     *
+     * You can either pass a Sabre_VObject_Component, Sabre_VObject_Property
+     * object, or a string to automatically create a Property.
+     *
+     * If the item already exists, it will be removed. If you want to add
+     * a new item with the same name, always use the add() method.
+     * 
+     * @param string $name
+     * @param mixed $value
+     * @return void
+     */
+    public function __set($name, $value) {
+
+        $matches = $this->select($name);
+        $overWrite = count($matches)?key($matches):null;
+
+        if ($value instanceof Sabre_VObject_Component || $value instanceof Sabre_VObject_Property) {
+            $value->parent = $this;
+            if (!is_null($overWrite)) {
+                $this->children[$overWrite] = $value;
+            } else {
+                $this->children[] = $value;
+            }
+        } elseif (is_scalar($value)) {
+            $property = new Sabre_VObject_Property($name,$value);
+            $property->parent = $this;
+            if (!is_null($overWrite)) {
+                $this->children[$overWrite] = $property;
+            } else {
+                $this->children[] = $property;
+            }
+        } else {
+            throw new InvalidArgumentException('You must pass a Sabre_VObject_Component, Sabre_VObject_Property or scalar type');
+        }
+
+    }
+
+    /**
+     * Removes all properties and components within this component. 
+     * 
+     * @param string $name 
+     * @return void
+     */
+    public function __unset($name) {
+
+        $matches = $this->select($name);
+        foreach($matches as $k=>$child) {
+
+            unset($this->children[$k]);
+            $child->parent = null;
+
+        }
+
+    }
+
+    /* }}} */
+
+}
diff --git a/3rdparty/Sabre/VObject/Element.php b/3rdparty/Sabre/VObject/Element.php
new file mode 100644
index 00000000000..8d2b0aaacd1
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Element.php
@@ -0,0 +1,15 @@
+<?php
+
+/**
+ * Base class for all elements
+ * 
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+abstract class Sabre_VObject_Element extends Sabre_VObject_Node {
+
+
+}
diff --git a/3rdparty/Sabre/VObject/Element/DateTime.php b/3rdparty/Sabre/VObject/Element/DateTime.php
new file mode 100644
index 00000000000..3350ec02c88
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Element/DateTime.php
@@ -0,0 +1,245 @@
+<?php
+
+/**
+ * DateTime property 
+ *
+ * This element is used for iCalendar properties such as the DTSTART property. 
+ * It basically provides a few helper functions that make it easier to deal 
+ * with these. It supports both DATE-TIME and DATE values.
+ *
+ * In order to use this correctly, you must call setDateTime and getDateTime to 
+ * retrieve and modify dates respectively.
+ *
+ * If you use the 'value' or properties directly, this object does not keep 
+ * reference and results might appear incorrectly.
+ * 
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_Element_DateTime extends Sabre_VObject_Property {
+
+    /**
+     * Local 'floating' time
+     */
+    const LOCAL = 1;
+
+    /**
+     * UTC-based time
+     */
+    const UTC = 2;
+
+    /**
+     * Local time plus timezone
+     */
+    const LOCALTZ = 3;
+
+    /**
+     * Only a date, time is ignored
+     */
+    const DATE = 4;
+
+    /**
+     * DateTime representation
+     *
+     * @var DateTime
+     */
+    protected $dateTime;
+
+    /**
+     * dateType 
+     * 
+     * @var int 
+     */
+    protected $dateType;
+
+    /**
+     * Updates the Date and Time. 
+     * 
+     * @param DateTime $dt 
+     * @param int $dateType 
+     * @return void
+     */
+    public function setDateTime(DateTime $dt, $dateType = self::LOCALTZ) {
+
+        switch($dateType) {
+
+            case self::LOCAL :
+                $this->setValue($dt->format('Ymd\\THis'));
+                $this->offsetUnset('VALUE');
+                $this->offsetUnset('TZID');
+                $this->offsetSet('VALUE','DATE-TIME'); 
+                break;
+            case self::UTC :
+                $dt->setTimeZone(new DateTimeZone('UTC'));
+                $this->setValue($dt->format('Ymd\\THis\\Z'));
+                $this->offsetUnset('VALUE');
+                $this->offsetUnset('TZID');
+                $this->offsetSet('VALUE','DATE-TIME');
+                break;
+            case self::LOCALTZ :
+                $this->setValue($dt->format('Ymd\\THis'));
+                $this->offsetUnset('VALUE');
+                $this->offsetUnset('TZID');
+                $this->offsetSet('VALUE','DATE-TIME');
+                $this->offsetSet('TZID', $dt->getTimeZone()->getName());
+                break; 
+            case self::DATE :
+                $this->setValue($dt->format('Ymd'));
+                $this->offsetUnset('VALUE');
+                $this->offsetUnset('TZID');
+                $this->offsetSet('VALUE','DATE');
+                break;
+            default :
+                throw new InvalidArgumentException('You must pass a valid dateType constant');
+
+        }
+        $this->dateTime = $dt;
+        $this->dateType = $dateType;
+
+    }
+
+    /**
+     * Returns the current DateTime value.
+     *
+     * If no value was set, this method returns null.
+     *
+     * @return DateTime|null 
+     */
+    public function getDateTime() {
+
+        if ($this->dateTime)
+            return $this->dateTime;
+
+        list(
+            $this->dateType,
+            $this->dateTime
+        ) = self::parseData($this->value, $this);
+        return $this->dateTime;
+
+    }
+
+    /**
+     * Returns the type of Date format.
+     *
+     * This method returns one of the format constants. If no date was set, 
+     * this method will return null.
+     *
+     * @return int|null
+     */
+    public function getDateType() {
+
+        if ($this->dateType)
+            return $this->dateType;
+
+        list(
+            $this->dateType,
+            $this->dateTime,
+        ) = self::parseData($this->value, $this);
+        return $this->dateType;
+
+    }
+
+    /**
+     * Parses the internal data structure to figure out what the current date 
+     * and time is.
+     *
+     * The returned array contains two elements:
+     *   1. A 'DateType' constant (as defined on this class), or null. 
+     *   2. A DateTime object (or null)
+     *
+     * @param string|null $propertyValue The string to parse (yymmdd or 
+     *                                   ymmddThhmmss, etc..)
+     * @param Sabre_VObject_Property|null $property The instance of the 
+     *                                              property we're parsing. 
+     * @return array 
+     */
+    static public function parseData($propertyValue, Sabre_VObject_Property $property = null) {
+
+        if (is_null($propertyValue)) {
+            return array(null, null);
+        }
+
+        $date = '(?P<year>[1-2][0-9]{3})(?P<month>[0-1][0-9])(?P<date>[0-3][0-9])';
+        $time = '(?P<hour>[0-2][0-9])(?P<minute>[0-5][0-9])(?P<second>[0-5][0-9])';
+        $regex = "/^$date(T$time(?P<isutc>Z)?)?$/";
+
+        if (!preg_match($regex, $propertyValue, $matches)) {
+            throw new InvalidArgumentException($propertyValue . ' is not a valid DateTime or Date string');
+        }
+
+        if (!isset($matches['hour'])) {
+            // Date-only
+            return array(
+                self::DATE,
+                new DateTime($matches['year'] . '-' . $matches['month'] . '-' . $matches['date'] . ' 00:00:00'),
+            );
+        }
+
+        $dateStr = 
+            $matches['year'] .'-' . 
+            $matches['month'] . '-' . 
+            $matches['date'] . ' ' .
+            $matches['hour'] . ':' .
+            $matches['minute'] . ':' .
+            $matches['second']; 
+
+        if (isset($matches['isutc'])) {
+            $dt = new DateTime($dateStr,new DateTimeZone('UTC'));
+            $dt->setTimeZone(new DateTimeZone('UTC'));
+            return array(
+                self::UTC,
+                $dt
+            );
+        }
+
+        // Finding the timezone.
+        $tzid = $property['TZID'];
+        if (!$tzid) {
+            return array(
+                self::LOCAL,
+                new DateTime($dateStr)
+            );
+        }
+
+        try {
+            $tz = new DateTimeZone($tzid->value);
+        } catch (Exception $e) {
+
+            // The id was invalid, we're going to try to find the information 
+            // through the VTIMEZONE object.
+
+            // First we find the root object
+            $root = $property;
+            while($root->parent) {
+                $root = $root->parent;
+            }
+
+            if (isset($root->VTIMEZONE)) {
+                foreach($root->VTIMEZONE as $vtimezone) {
+                    if (((string)$vtimezone->TZID) == $tzid) {
+                        if (isset($vtimezone->{'X-LIC-LOCATION'})) {
+                            $tzid = (string)$vtimezone->{'X-LIC-LOCATION'};
+                        }
+                    }
+                }
+            }
+
+            $tz = new DateTimeZone($tzid);
+            
+        }
+        $dt = new DateTime($dateStr, $tz);
+        $dt->setTimeZone($tz);
+
+        return array(
+            self::LOCALTZ,
+            $dt
+        );
+
+    }
+
+}
+
+?>
diff --git a/3rdparty/Sabre/VObject/Element/MultiDateTime.php b/3rdparty/Sabre/VObject/Element/MultiDateTime.php
new file mode 100644
index 00000000000..dc6ca5abb80
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Element/MultiDateTime.php
@@ -0,0 +1,168 @@
+<?php
+
+/**
+ * Multi-DateTime property 
+ *
+ * This element is used for iCalendar properties such as the EXDATE property. 
+ * It basically provides a few helper functions that make it easier to deal 
+ * with these. It supports both DATE-TIME and DATE values.
+ *
+ * In order to use this correctly, you must call setDateTimes and getDateTimes 
+ * to retrieve and modify dates respectively.
+ *
+ * If you use the 'value' or properties directly, this object does not keep 
+ * reference and results might appear incorrectly.
+ * 
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_Element_MultiDateTime extends Sabre_VObject_Property {
+
+    /**
+     * DateTime representation
+     *
+     * @var DateTime[]
+     */
+    protected $dateTimes;
+
+    /**
+     * dateType
+     *
+     * This is one of the Sabre_VObject_Element_DateTime constants.
+     *
+     * @var int 
+     */
+    protected $dateType;
+
+    /**
+     * Updates the value 
+     * 
+     * @param array $dt Must be an array of DateTime objects. 
+     * @param int $dateType 
+     * @return void
+     */
+    public function setDateTimes(array $dt, $dateType = Sabre_VObject_Element_DateTime::LOCALTZ) {
+
+        foreach($dt as $i) 
+            if (!$i instanceof DateTime) 
+                throw new InvalidArgumentException('You must pass an array of DateTime objects');
+
+        $this->offsetUnset('VALUE');
+        $this->offsetUnset('TZID');
+        switch($dateType) {
+
+            case Sabre_VObject_Element_DateTime::LOCAL :
+                $val = array();
+                foreach($dt as $i) {
+                    $val[] = $i->format('Ymd\\THis');
+                }
+                $this->setValue(implode(',',$val));
+                $this->offsetSet('VALUE','DATE-TIME'); 
+                break;
+            case Sabre_VObject_Element_DateTime::UTC :
+                $val = array();
+                foreach($dt as $i) {
+                    $i->setTimeZone(new DateTimeZone('UTC'));
+                    $val[] = $i->format('Ymd\\THis\\Z');
+                }
+                $this->setValue(implode(',',$val));
+                $this->offsetSet('VALUE','DATE-TIME');
+                break;
+            case Sabre_VObject_Element_DateTime::LOCALTZ :
+                $val = array();
+                foreach($dt as $i) {
+                    $val[] = $i->format('Ymd\\THis');
+                }
+                $this->setValue(implode(',',$val));
+                $this->offsetSet('VALUE','DATE-TIME');
+                $this->offsetSet('TZID', $dt[0]->getTimeZone()->getName());
+                break; 
+            case Sabre_VObject_Element_DateTime::DATE :
+                $val = array();
+                foreach($dt as $i) {
+                    $val[] = $i->format('Ymd');
+                }
+                $this->setValue(implode(',',$val));
+                $this->offsetSet('VALUE','DATE');
+                break;
+            default :
+                throw new InvalidArgumentException('You must pass a valid dateType constant');
+
+        }
+        $this->dateTimes = $dt;
+        $this->dateType = $dateType;
+
+    }
+
+    /**
+     * Returns the current DateTime value.
+     *
+     * If no value was set, this method returns null.
+     *
+     * @return array|null 
+     */
+    public function getDateTimes() {
+
+        if ($this->dateTimes)
+            return $this->dateTimes;
+
+        $dts = array();
+    
+        if (!$this->value) {
+            $this->dateTimes = null;
+            $this->dateType = null;
+            return null;
+        }
+
+        foreach(explode(',',$this->value) as $val) {
+            list(
+                $type,
+                $dt
+            ) = Sabre_VObject_Element_DateTime::parseData($val, $this);
+            $dts[] = $dt;
+            $this->dateType = $type;
+        }
+        $this->dateTimes = $dts;
+        return $this->dateTimes;
+
+    }
+
+    /**
+     * Returns the type of Date format.
+     *
+     * This method returns one of the format constants. If no date was set, 
+     * this method will return null.
+     *
+     * @return int|null
+     */
+    public function getDateType() {
+
+        if ($this->dateType)
+            return $this->dateType;
+    
+        if (!$this->value) {
+            $this->dateTimes = null;
+            $this->dateType = null;
+            return null;
+        }
+
+        $dts = array();
+        foreach(explode(',',$this->value) as $val) {
+            list(
+                $type,
+                $dt
+            ) = Sabre_VObject_Element_DateTime::parseData($val, $this);
+            $dts[] = $dt;
+            $this->dateType = $type; 
+        }
+        $this->dateTimes = $dts;
+        return $this->dateType;
+
+    }
+
+}
+
+?>
diff --git a/3rdparty/Sabre/VObject/ElementList.php b/3rdparty/Sabre/VObject/ElementList.php
new file mode 100644
index 00000000000..9922cd587bc
--- /dev/null
+++ b/3rdparty/Sabre/VObject/ElementList.php
@@ -0,0 +1,172 @@
+<?php
+
+/**
+ * VObject ElementList
+ *
+ * This class represents a list of elements. Lists are the result of queries,
+ * such as doing $vcalendar->vevent where there's multiple VEVENT objects.
+ *
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_ElementList implements Iterator, Countable, ArrayAccess {
+
+    /**
+     * Inner elements 
+     * 
+     * @var array
+     */
+    protected $elements = array();
+
+    /**
+     * Creates the element list.
+     *
+     * @param array $elements 
+     */
+    public function __construct(array $elements) {
+
+        $this->elements = $elements;
+
+    } 
+
+    /* {{{ Iterator interface */
+
+    /**
+     * Current position  
+     * 
+     * @var int 
+     */
+    private $key = 0;
+
+    /**
+     * Returns current item in iteration 
+     * 
+     * @return Sabre_VObject_Element 
+     */
+    public function current() {
+
+        return $this->elements[$this->key];
+
+    }
+   
+    /**
+     * To the next item in the iterator 
+     * 
+     * @return void
+     */
+    public function next() {
+
+        $this->key++;
+
+    }
+
+    /**
+     * Returns the current iterator key 
+     * 
+     * @return int
+     */
+    public function key() {
+
+        return $this->key;
+
+    }
+
+    /**
+     * Returns true if the current position in the iterator is a valid one 
+     * 
+     * @return bool 
+     */
+    public function valid() {
+
+        return isset($this->elements[$this->key]);
+
+    }
+
+    /**
+     * Rewinds the iterator 
+     * 
+     * @return void 
+     */
+    public function rewind() {
+
+        $this->key = 0;
+
+    }
+
+    /* }}} */
+
+    /* {{{ Countable interface */
+
+    /**
+     * Returns the number of elements 
+     * 
+     * @return int 
+     */
+    public function count() {
+
+        return count($this->elements);
+
+    }
+
+    /* }}} */
+
+    /* {{{ ArrayAccess Interface */
+
+    
+    /**
+     * Checks if an item exists through ArrayAccess.
+     *
+     * @param int $offset 
+     * @return bool 
+     */
+    public function offsetExists($offset) {
+
+        return isset($this->elements[$offset]);
+
+    }
+
+    /**
+     * Gets an item through ArrayAccess.
+     *
+     * @param int $offset 
+     * @return mixed 
+     */
+    public function offsetGet($offset) {
+
+        return $this->elements[$offset];
+
+    }
+
+    /**
+     * Sets an item through ArrayAccess.
+     *
+     * @param int $offset 
+     * @param mixed $value 
+     * @return void
+     */
+    public function offsetSet($offset,$value) {
+
+        throw new LogicException('You can not add new objects to an ElementList');
+
+    }
+
+    /**
+     * Sets an item through ArrayAccess.
+     *
+     * This method just forwards the request to the inner iterator
+     *
+     * @param int $offset 
+     * @return void
+     */
+    public function offsetUnset($offset) {
+
+        throw new LogicException('You can not remove objects from an ElementList');
+
+    }
+
+    /* }}} */
+
+}
diff --git a/3rdparty/Sabre/VObject/Node.php b/3rdparty/Sabre/VObject/Node.php
new file mode 100644
index 00000000000..7100b62f1cb
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Node.php
@@ -0,0 +1,149 @@
+<?php
+
+/**
+ * Base class for all nodes 
+ * 
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+abstract class Sabre_VObject_Node implements IteratorAggregate, ArrayAccess, Countable {
+
+    /**
+     * Turns the object back into a serialized blob. 
+     * 
+     * @return string 
+     */
+    abstract function serialize();
+
+    /**
+     * Iterator override 
+     * 
+     * @var Sabre_VObject_ElementList 
+     */
+    protected $iterator = null;
+
+    /**
+     * A link to the parent node
+     * 
+     * @var Sabre_VObject_Node 
+     */
+    protected $parent = null;
+
+    /* {{{ IteratorAggregator interface */
+
+    /**
+     * Returns the iterator for this object 
+     * 
+     * @return Sabre_VObject_ElementList 
+     */
+    public function getIterator() {
+
+        if (!is_null($this->iterator)) 
+            return $this->iterator;
+
+        return new Sabre_VObject_ElementList(array($this));
+
+    }
+
+    /**
+     * Sets the overridden iterator
+     *
+     * Note that this is not actually part of the iterator interface
+     * 
+     * @param Sabre_VObject_ElementList $iterator 
+     * @return void
+     */
+    public function setIterator(Sabre_VObject_ElementList $iterator) {
+
+        $this->iterator = $iterator;
+
+    }
+
+    /* }}} */
+
+    /* {{{ Countable interface */
+
+    /**
+     * Returns the number of elements 
+     * 
+     * @return int 
+     */
+    public function count() {
+
+        $it = $this->getIterator();
+        return $it->count();
+
+    }
+
+    /* }}} */
+
+    /* {{{ ArrayAccess Interface */
+
+    
+    /**
+     * Checks if an item exists through ArrayAccess.
+     *
+     * This method just forwards the request to the inner iterator
+     * 
+     * @param int $offset 
+     * @return bool 
+     */
+    public function offsetExists($offset) {
+
+        $iterator = $this->getIterator();
+        return $iterator->offsetExists($offset);
+
+    }
+
+    /**
+     * Gets an item through ArrayAccess.
+     *
+     * This method just forwards the request to the inner iterator
+     *
+     * @param int $offset 
+     * @return mixed 
+     */
+    public function offsetGet($offset) {
+
+        $iterator = $this->getIterator();
+        return $iterator->offsetGet($offset);
+
+    }
+
+    /**
+     * Sets an item through ArrayAccess.
+     *
+     * This method just forwards the request to the inner iterator
+     *
+     * @param int $offset 
+     * @param mixed $value 
+     * @return void
+     */
+    public function offsetSet($offset,$value) {
+
+        $iterator = $this->getIterator();
+        return $iterator->offsetSet($offset,$value);
+
+    }
+
+    /**
+     * Sets an item through ArrayAccess.
+     *
+     * This method just forwards the request to the inner iterator
+     *
+     * @param int $offset 
+     * @return void
+     */
+    public function offsetUnset($offset) {
+
+        $iterator = $this->getIterator();
+        return $iterator->offsetUnset($offset);
+
+    }
+
+    /* }}} */
+
+}
diff --git a/3rdparty/Sabre/VObject/Parameter.php b/3rdparty/Sabre/VObject/Parameter.php
new file mode 100644
index 00000000000..9ebab6ec69b
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Parameter.php
@@ -0,0 +1,81 @@
+<?php
+
+/**
+ * VObject Parameter
+ *
+ * This class represents a parameter. A parameter is always tied to a property.
+ * In the case of:
+ *   DTSTART;VALUE=DATE:20101108 
+ * VALUE=DATE would be the parameter name and value.
+ * 
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_Parameter extends Sabre_VObject_Node {
+
+    /**
+     * Parameter name 
+     * 
+     * @var string 
+     */
+    public $name;
+
+    /**
+     * Parameter value 
+     * 
+     * @var string 
+     */
+    public $value;
+
+    /**
+     * Sets up the object 
+     * 
+     * @param string $name 
+     * @param string $value 
+     */
+    public function __construct($name, $value = null) {
+
+        $this->name = strtoupper($name);
+        $this->value = $value;
+
+    } 
+
+    /**
+     * Turns the object back into a serialized blob. 
+     * 
+     * @return string 
+     */
+    public function serialize() {
+
+        $src = array(
+            '\\',
+            "\n",
+            ';',
+            ',',
+        );
+        $out = array(
+            '\\\\',
+            '\n',
+            '\;',
+            '\,',
+        );
+
+        return $this->name . '=' . str_replace($src, $out, $this->value);
+
+    }
+
+    /**
+     * Called when this object is being cast to a string 
+     * 
+     * @return string 
+     */
+    public function __toString() {
+
+        return $this->value;
+
+    }
+
+}
diff --git a/3rdparty/Sabre/VObject/ParseException.php b/3rdparty/Sabre/VObject/ParseException.php
new file mode 100644
index 00000000000..ed4ef2e8592
--- /dev/null
+++ b/3rdparty/Sabre/VObject/ParseException.php
@@ -0,0 +1,12 @@
+<?php
+
+/**
+ * Exception thrown by Sabre_VObject_Reader if an invalid object was attempted to be parsed.
+ * 
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_ParseException extends Exception { }
diff --git a/3rdparty/Sabre/VObject/Property.php b/3rdparty/Sabre/VObject/Property.php
new file mode 100644
index 00000000000..06058229043
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Property.php
@@ -0,0 +1,289 @@
+<?php
+
+/**
+ * VObject Property
+ *
+ * A property in VObject is usually in the form PARAMNAME:paramValue.
+ * An example is : SUMMARY:Weekly meeting 
+ *
+ * Properties can also have parameters:
+ * SUMMARY;LANG=en:Weekly meeting.
+ *
+ * Parameters can be accessed using the ArrayAccess interface. 
+ *
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_Property extends Sabre_VObject_Element {
+
+    /**
+     * Propertyname 
+     * 
+     * @var string 
+     */
+    public $name;
+
+    /**
+     * Group name
+     * 
+     * This may be something like 'HOME' for vcards.
+     *
+     * @var string 
+     */
+    public $group;
+
+    /**
+     * Property parameters 
+     * 
+     * @var array 
+     */
+    public $parameters = array();
+
+    /**
+     * Property value 
+     * 
+     * @var string 
+     */
+    public $value;
+
+    /**
+     * Creates a new property object
+     * 
+     * By default this object will iterate over its own children, but this can 
+     * be overridden with the iterator argument
+     * 
+     * @param string $name 
+     * @param string $value
+     * @param Sabre_VObject_ElementList $iterator
+     */
+    public function __construct($name, $value = null, $iterator = null) {
+
+        $name = strtoupper($name);
+        $group = null;
+        if (strpos($name,'.')!==false) {
+            list($group, $name) = explode('.', $name);
+        }
+        $this->name = $name;
+        $this->group = $group;
+        if (!is_null($iterator)) $this->iterator = $iterator;
+        $this->setValue($value);
+
+    }
+
+    /**
+     * Updates the internal value 
+     * 
+     * @param string $value 
+     * @return void
+     */
+    public function setValue($value) {
+
+        $this->value = $value;
+
+    }
+
+    /**
+     * Turns the object back into a serialized blob. 
+     * 
+     * @return string 
+     */
+    public function serialize() {
+
+        $str = $this->name;
+        if ($this->group) $str = $this->group . '.' . $this->name;
+
+        if (count($this->parameters)) {
+            foreach($this->parameters as $param) {
+                
+                $str.=';' . $param->serialize();
+
+            }
+        }
+        $src = array(
+            '\\',
+            "\n",
+        );
+        $out = array(
+            '\\\\',
+            '\n',
+        );
+        $str.=':' . str_replace($src, $out, $this->value);
+
+        $out = '';
+        while(strlen($str)>0) {
+            if (strlen($str)>75) {
+                $out.= substr($str,0,75) . "\r\n";
+                $str = ' ' . substr($str,75);
+            } else {
+                $out.=$str . "\r\n";
+                $str='';
+                break;
+            }
+        }
+
+        return $out;
+
+    }
+
+    /**
+     * Adds a new componenten or element
+     *
+     * You can call this method with the following syntaxes:
+     *
+     * add(Sabre_VObject_Parameter $element)
+     * add(string $name, $value)
+     *
+     * The first version adds an Parameter 
+     * The second adds a property as a string. 
+     * 
+     * @param mixed $item 
+     * @param mixed $itemValue 
+     * @return void
+     */
+    public function add($item, $itemValue = null) {
+
+        if ($item instanceof Sabre_VObject_Parameter) {
+            if (!is_null($itemValue)) {
+                throw new InvalidArgumentException('The second argument must not be specified, when passing a VObject');
+            }
+            $item->parent = $this;
+            $this->parameters[] = $item;
+        } elseif(is_string($item)) {
+
+            if (!is_scalar($itemValue)) {
+                throw new InvalidArgumentException('The second argument must be scalar');
+            }
+            $parameter = new Sabre_VObject_Parameter($item,$itemValue);
+            $parameter->parent = $this;
+            $this->parameters[] = $parameter;
+
+        } else {
+            
+            throw new InvalidArgumentException('The first argument must either be a Sabre_VObject_Element or a string');
+
+        }
+
+    }
+
+
+    /* ArrayAccess interface {{{ */
+
+    /**
+     * Checks if an array element exists
+     * 
+     * @param mixed $name 
+     * @return bool 
+     */
+    public function offsetExists($name) {
+
+        if (is_int($name)) return parent::offsetExists($name);
+
+        $name = strtoupper($name);
+
+        foreach($this->parameters as $parameter) {
+            if ($parameter->name == $name) return true;
+        }
+        return false;
+
+    }
+
+    /**
+     * Returns a parameter, or parameter list. 
+     * 
+     * @param string $name 
+     * @return Sabre_VObject_Element 
+     */
+    public function offsetGet($name) {
+
+        if (is_int($name)) return parent::offsetGet($name);
+        $name = strtoupper($name);
+        
+        $result = array();
+        foreach($this->parameters as $parameter) {
+            if ($parameter->name == $name)
+                $result[] = $parameter;
+        }
+
+        if (count($result)===0) {
+            return null;
+        } elseif (count($result)===1) {
+            return $result[0];
+        } else {
+            $result[0]->setIterator(new Sabre_VObject_ElementList($result));
+            return $result[0];
+        }
+
+    }
+
+    /**
+     * Creates a new parameter 
+     * 
+     * @param string $name
+     * @param mixed $value
+     * @return void
+     */
+    public function offsetSet($name, $value) {
+
+        if (is_int($name)) return parent::offsetSet($name, $value);
+
+        if (is_scalar($value)) {
+            if (!is_string($name)) 
+                throw new InvalidArgumentException('A parameter name must be specified. This means you cannot use the $array[]="string" to add parameters.');
+
+            $this->offsetUnset($name);
+            $parameter = new Sabre_VObject_Parameter($name, $value);
+            $parameter->parent = $this;
+            $this->parameters[] = $parameter;
+
+        } elseif ($value instanceof Sabre_VObject_Parameter) {
+            if (!is_null($name))
+                throw new InvalidArgumentException('Don\'t specify a parameter name if you\'re passing a Sabre_VObject_Parameter. Add using $array[]=$parameterObject.');
+
+            $value->parent = $this; 
+            $this->parameters[] = $value;
+        } else {
+            throw new InvalidArgumentException('You can only add parameters to the property object');
+        }
+
+    }
+
+    /**
+     * Removes one or more parameters with the specified name 
+     * 
+     * @param string $name 
+     * @return void 
+     */
+    public function offsetUnset($name) {
+
+        if (is_int($name)) return parent::offsetUnset($name, $value);
+        $name = strtoupper($name);
+        
+        $result = array();
+        foreach($this->parameters as $key=>$parameter) {
+            if ($parameter->name == $name) {
+                $parameter->parent = null;
+                unset($this->parameters[$key]);
+            }
+
+        }
+
+    }
+
+    /* }}} */
+
+    /**
+     * Called when this object is being cast to a string 
+     * 
+     * @return string 
+     */
+    public function __toString() {
+
+        return $this->value;
+
+    }
+
+
+}
diff --git a/3rdparty/Sabre/VObject/Reader.php b/3rdparty/Sabre/VObject/Reader.php
new file mode 100644
index 00000000000..7d1c282838e
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Reader.php
@@ -0,0 +1,191 @@
+<?php
+
+/**
+ * VCALENDAR/VCARD reader
+ *
+ * This class reads the vobject file, and returns a full element tree.
+ *
+ *
+ * TODO: this class currently completely works 'statically'. This is pointless, 
+ * and defeats OOP principals. Needs refaxtoring in a future version.
+ * 
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_Reader {
+
+    /**
+     * This array contains a list of Property names that are automatically 
+     * mapped to specific class names.
+     *
+     * Adding to this list allows you to specify custom property classes, 
+     * adding extra functionality. 
+     * 
+     * @var array
+     */
+    static public $elementMap = array(
+        'DTSTART'   => 'Sabre_VObject_Element_DateTime',
+        'DTEND'     => 'Sabre_VObject_Element_DateTime',
+        'COMPLETED' => 'Sabre_VObject_Element_DateTime',
+        'DUE'       => 'Sabre_VObject_Element_DateTime',
+        'EXDATE'    => 'Sabre_VObject_Element_MultiDateTime',
+    );
+
+    /**
+     * Parses the file and returns the top component 
+     * 
+     * @param string $data 
+     * @return Sabre_VObject_Element 
+     */
+    static function read($data) {
+
+        // Normalizing newlines
+        $data = str_replace(array("\r","\n\n"), array("\n","\n"), $data);
+
+        $lines = explode("\n", $data);
+
+        // Unfolding lines
+        $lines2 = array();
+        foreach($lines as $line) {
+
+            // Skipping empty lines
+            if (!$line) continue;
+
+            if ($line[0]===" " || $line[0]==="\t") {
+                $lines2[count($lines2)-1].=substr($line,1);
+            } else {
+                $lines2[] = $line;
+            }
+
+        }
+
+        unset($lines);
+        
+        reset($lines2);
+
+        return self::readLine($lines2);
+       
+    }
+
+    /**
+     * Reads and parses a single line.
+     *
+     * This method receives the full array of lines. The array pointer is used
+     * to traverse.
+     * 
+     * @param array $lines 
+     * @return Sabre_VObject_Element 
+     */
+    static private function readLine(&$lines) {
+
+        $line = current($lines);
+        $lineNr = key($lines);
+        next($lines);
+
+        // Components
+        if (stripos($line,"BEGIN:")===0) {
+
+            // This is a component
+            $obj = new Sabre_VObject_Component(strtoupper(substr($line,6)));
+
+            $nextLine = current($lines);
+
+            while(stripos($nextLine,"END:")!==0) {
+
+                $obj->add(self::readLine($lines));
+                $nextLine = current($lines);
+
+                if ($nextLine===false) 
+                    throw new Sabre_VObject_ParseException('Invalid VObject. Document ended prematurely.');
+
+            }
+
+            // Checking component name of the 'END:' line. 
+            if (substr($nextLine,4)!==$obj->name) {
+                throw new Sabre_VObject_ParseException('Invalid VObject, expected: "END:' . $obj->name . '" got: "' . $nextLine . '"');
+            }
+            next($lines);
+
+            return $obj;
+
+        }
+
+        // Properties
+        //$result = preg_match('/(?P<name>[A-Z0-9-]+)(?:;(?P<parameters>^(?<!:):))(.*)$/',$line,$matches);
+
+
+        $token = '[A-Z0-9-\/\.]+';
+        $parameters = "(?:;(?P<parameters>([^:^\"]|\"([^\"]*)\")*))?";
+        $regex = "/^(?P<name>$token)$parameters:(?P<value>.*)$/i";
+
+        $result = preg_match($regex,$line,$matches);
+
+        if (!$result) {
+            throw new Sabre_VObject_ParseException('Invalid VObject, line ' . ($lineNr+1) . ' did not follow the icalendar/vcard format');
+        }
+
+        $propertyName = strtoupper($matches['name']);
+        $propertyValue = stripcslashes($matches['value']);
+
+        if (isset(self::$elementMap[$propertyName])) {
+            $className = self::$elementMap[$propertyName];
+        } else {
+            $className = 'Sabre_VObject_Property';
+        }
+
+        $obj = new $className($propertyName, $propertyValue);
+
+        if ($matches['parameters']) {
+
+            foreach(self::readParameters($matches['parameters']) as $param) {
+                $obj->add($param);
+            }
+        } 
+
+        return $obj;
+
+
+    }
+
+    /**
+     * Reads a parameter list from a property 
+     *
+     * This method returns an array of Sabre_VObject_Parameter
+     *
+     * @param string $parameters 
+     * @return array 
+     */
+    static private function readParameters($parameters) {
+
+        $token = '[A-Z0-9-]+';
+
+        $paramValue = '(?P<paramValue>[^\"^;]*|"[^"]*")';
+
+        $regex = "/(?<=^|;)(?P<paramName>$token)(=$paramValue(?=$|;))?/i";
+        preg_match_all($regex, $parameters, $matches,  PREG_SET_ORDER);
+
+        $params = array();
+        foreach($matches as $match) {
+
+            $value = isset($match['paramValue'])?$match['paramValue']:null;
+
+            if (isset($value[0])) {
+                // Stripping quotes, if needed
+                if ($value[0] === '"') $value = substr($value,1,strlen($value)-2);
+            } else {
+                $value = '';
+            }
+
+            $params[] = new Sabre_VObject_Parameter($match['paramName'], stripcslashes($value));
+
+        }
+
+        return $params;
+
+    }
+
+
+}
diff --git a/3rdparty/Sabre/VObject/Version.php b/3rdparty/Sabre/VObject/Version.php
new file mode 100644
index 00000000000..937c367e222
--- /dev/null
+++ b/3rdparty/Sabre/VObject/Version.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * This class contains the version number for the VObject package
+ * 
+ * @package Sabre
+ * @subpackage VObject 
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class Sabre_VObject_Version {
+
+    /**
+     * Full version number
+     */
+    const VERSION = '1.2.4';
+
+    /**
+     * Stability : alpha, beta, stable
+     */
+    const STABILITY = 'stable';
+
+}
diff --git a/3rdparty/Sabre/VObject/includes.php b/3rdparty/Sabre/VObject/includes.php
new file mode 100644
index 00000000000..f21010fb275
--- /dev/null
+++ b/3rdparty/Sabre/VObject/includes.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * VObject includes 
+ *
+ * This file automatically includes all VObject classes 
+ *
+ * @package Sabre
+ * @subpackage VObject
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/) 
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+
+
+include dirname(__FILE__) . '/ParseException.php';
+
+include dirname(__FILE__) . '/Node.php';
+include dirname(__FILE__) . '/Element.php';
+include dirname(__FILE__) . '/ElementList.php';
+include dirname(__FILE__) . '/Parameter.php';
+include dirname(__FILE__) . '/Property.php';
+include dirname(__FILE__) . '/Component.php';
+
+include dirname(__FILE__) . '/Element/DateTime.php';
+include dirname(__FILE__) . '/Element/MultiDateTime.php';
+
+include dirname(__FILE__) . '/Reader.php';
+include dirname(__FILE__) . '/Version.php';