fix for escaping categories

appinfo/app.php

@@ -33,7 +33,7 @@
 		'order' => 1,
 		'name' => $c->query('L10N')->t('Calendar+'),
 		'href' => $c->query('URLGenerator')->linkToRoute($c->getAppName().'.page.index'),
-		'icon' => $c->query('URLGenerator')->imagePath($c->getAppName(), 'calendar.svg'),
+		'icon' => $c->query('URLGenerator')->imagePath($c->getAppName(), 'calendarplus.svg'),
 	];
 };
 $c->getServer()->getNavigationManager()->add($navigationEntry);
@@ -50,6 +50,8 @@
 
 \OCA\CalendarPlus\Hooks::register();
 
+\Sabre\VObject\Component\VCalendar::$propertyMap['CATEGORIES'] = '\OCA\CalendarPlus\VObject\StringPropertyCategories';
+
 \OCP\Util::addScript($appName,'alarm');
 
 if (\OCP\User::isLoggedIn() && !\OCP\App::isEnabled('calendar')) {

lib/vobject/stringpropertycategories.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace OCA\CalendarPlus\VObject;
+
+use \Sabre\VObject;
+
+class StringPropertyCategories extends \Sabre\VObject\Property\Text {
+
+
+	/**
+	* Turns the object back into a serialized blob.
+	*
+	* @return string
+	*/
+	public function serialize() {
+
+			$str = $this->name;
+			if ($this->group) {
+				$str = $this->group . '.' . $this->name;
+			}
+
+
+			$src = array(
+				';',
+			);
+			$out = array(
+				',',
+			);
+
+			if(is_array($this->value)){
+				$this->value = implode(',',$this->value);
+			}
+
+			$value = strtr($this->value, array('\,' => ',', '\;' => ';'));
+			$str.=':' . str_replace($src, $out, $value);
+
+			$out = '';
+			while(strlen($str) > 0) {
+				if (strlen($str) > 75) {
+					$out .= mb_strcut($str, 0, 75, 'utf-8') . "\r\n";
+					$str = ' ' . mb_strcut($str, 75, strlen($str), 'utf-8');
+				} else {
+					$out .= $str . "\r\n";
+					$str = '';
+					break;
+				}
+			}
+
+		return $out;
+
+	}
+
+
+}

service/objectparser.php

@@ -660,7 +660,7 @@ public  function updateVCalendarFromRequest($request, $vcalendar) {
 		$vevent->setString('CLASS', $accessclass);
 		$vevent->setString('LOCATION', $location);
 		$vevent->setString('DESCRIPTION', $description);
-		$vevent->setString('CATEGORIES', $categories);
+		$vevent->CATEGORIES = $categories;
 		$vevent->setString('URL', $link);