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<?php
/**
* ownCloud
*
* @author Thomas Tanghus
* @copyright 2012 Thomas Tanghus <thomas@tanghus.net>
* @copyright 2012 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/>.
*
*/
/**
* Class for easy access to categories in VCARD, VEVENT, VTODO and VJOURNAL.
* A Category can be e.g. 'Family', 'Work', 'Chore', 'Special Occation' or
* anything else that is either parsed from a vobject or that the user chooses
* to add.
* Category names are not case-sensitive, but will be saved with the case they
* are entered in. If a user already has a category 'family' for an app, and
* tries to add a category named 'Family' it will be silently ignored.
* NOTE: There is a limitation in that the the configvalue field in the
* preferences table is a varchar(255).
*/
class OC_VCategories {
const PREF_CATEGORIES_LABEL = 'extra_categories';
/**
* Categories
*/
private $categories = array();
private $app = null;
private $user = null;
/**
* @brief Constructor.
* @param $app The application identifier e.g. 'contacts' or 'calendar'.
* @param $user The user whos data the object will operate on. This
* parameter should normally be omitted but to make an app able to
* update categories for all users it is made possible to provide it.
* @param $defcategories An array of default categories to be used if none is stored.
*/
public function __construct($app, $user=null, $defcategories=array()) {
$this->app = $app;
$this->user = is_null($user) ? OC_User::getUser() : $user;
$categories = trim(OC_Preferences::getValue($this->user, $app, self::PREF_CATEGORIES_LABEL, ''));
$this->categories = $categories != '' ? @unserialize($categories) : $defcategories;
}
/**
* @brief Get the categories for a specific user.
* @returns array containing the categories as strings.
*/
public function categories() {
//OC_Log::write('core','OC_VCategories::categories: '.print_r($this->categories, true), OC_Log::DEBUG);
if(!$this->categories) {
return array();
}
usort($this->categories, 'strnatcasecmp'); // usort to also renumber the keys
return $this->categories;
}
/**
* @brief Checks whether a category is already saved.
* @param $name The name to check for.
* @returns bool
*/
public function hasCategory($name) {
return $this->in_arrayi($name, $this->categories);
}
/**
* @brief Add a new category name.
* @param $names A string with a name or an array of strings containing
* the name(s) of the categor(y|ies) to add.
* @param $sync bool When true, save the categories
* @returns bool Returns false on error.
*/
public function add($names, $sync=false) {
if(!is_array($names)) {
$names = array($names);
}
$names = array_map('trim', $names);
$newones = array();
foreach($names as $name) {
if(($this->in_arrayi($name, $this->categories) == false) && $name != '') {
$newones[] = $name;
}
}
if(count($newones) > 0) {
$this->categories = array_merge($this->categories, $newones);
if($sync === true) {
$this->save();
}
}
return true;
}
/**
* @brief Extracts categories from a vobject and add the ones not already present.
* @param $vobject The instance of OC_VObject to load the categories from.
*/
public function loadFromVObject($vobject, $sync=false) {
$this->add($vobject->getAsArray('CATEGORIES'), $sync);
}
/**
* @brief Reset saved categories and rescan supplied vobjects for categories.
* @param $objects An array of vobjects (as text).
* To get the object array, do something like:
* // For Addressbook:
* $categories = new OC_VCategories('contacts');
* $stmt = OC_DB::prepare( 'SELECT carddata FROM *PREFIX*contacts_cards' );
* $result = $stmt->execute();
* $objects = array();
* if(!is_null($result)) {
* while( $row = $result->fetchRow()){
* $objects[] = $row['carddata'];
* }
* }
* $categories->rescan($objects);
*/
public function rescan($objects, $sync=true, $reset=true) {
if($reset === true) {
$this->categories = array();
}
foreach($objects as $object) {
//OC_Log::write('core','OC_VCategories::rescan: '.substr($object, 0, 100).'(...)', OC_Log::DEBUG);
$vobject = OC_VObject::parse($object);
if(!is_null($vobject)) {
$this->loadFromVObject($vobject, $sync);
} else {
OC_Log::write('core','OC_VCategories::rescan, unable to parse. ID: '.', '.substr($object, 0, 100).'(...)', OC_Log::DEBUG);
}
}
$this->save();
}
/**
* @brief Save the list with categories
*/
private function save() {
if(is_array($this->categories)) {
usort($this->categories, 'strnatcasecmp'); // usort to also renumber the keys
$escaped_categories = serialize($this->categories);
OC_Preferences::setValue($this->user, $this->app, self::PREF_CATEGORIES_LABEL, $escaped_categories);
OC_Log::write('core','OC_VCategories::save: '.print_r($this->categories, true), OC_Log::DEBUG);
} else {
OC_Log::write('core','OC_VCategories::save: $this->categories is not an array! '.print_r($this->categories, true), OC_Log::ERROR);
}
}
/**
* @brief Delete categories from the db and from all the vobject supplied
* @param $names An array of categories to delete
* @param $objects An array of arrays with [id,vobject] (as text) pairs suitable for updating the apps object table.
*/
public function delete($names, array &$objects=null) {
if(!is_array($names)) {
$names = array($names);
}
OC_Log::write('core','OC_VCategories::delete, before: '.print_r($this->categories, true), OC_Log::DEBUG);
foreach($names as $name) {
OC_Log::write('core','OC_VCategories::delete: '.$name, OC_Log::DEBUG);
if($this->hasCategory($name)) {
//OC_Log::write('core','OC_VCategories::delete: '.$name.' got it', OC_Log::DEBUG);
unset($this->categories[$this->array_searchi($name, $this->categories)]);
}
}
$this->save();
OC_Log::write('core','OC_VCategories::delete, after: '.print_r($this->categories, true), OC_Log::DEBUG);
if(!is_null($objects)) {
foreach($objects as $key=>&$value) {
$vobject = OC_VObject::parse($value[1]);
if(!is_null($vobject)){
$categories = $vobject->getAsArray('CATEGORIES');
//OC_Log::write('core','OC_VCategories::delete, before: '.$key.': '.print_r($categories, true), OC_Log::DEBUG);
foreach($names as $name) {
$idx = $this->array_searchi($name, $categories);
//OC_Log::write('core','OC_VCategories::delete, loop: '.$name.', '.print_r($idx, true), OC_Log::DEBUG);
if($idx !== false) {
OC_Log::write('core','OC_VCategories::delete, unsetting: '.$categories[$this->array_searchi($name, $categories)], OC_Log::DEBUG);
unset($categories[$this->array_searchi($name, $categories)]);
//unset($categories[$idx]);
}
}
//OC_Log::write('core','OC_VCategories::delete, after: '.$key.': '.print_r($categories, true), OC_Log::DEBUG);
$vobject->setString('CATEGORIES', implode(',', $categories));
$value[1] = $vobject->serialize();
$objects[$key] = $value;
} else {
OC_Log::write('core','OC_VCategories::delete, unable to parse. ID: '.$value[0].', '.substr($value[1], 0, 50).'(...)', OC_Log::DEBUG);
}
}
}
}
// case-insensitive in_array
private function in_arrayi($needle, $haystack) {
if(!is_array($haystack)) {
return false;
}
return in_array(strtolower($needle), array_map('strtolower', $haystack));
}
// case-insensitive array_search
private function array_searchi($needle, $haystack) {
if(!is_array($haystack)) {
return false;
}
return array_search(strtolower($needle),array_map('strtolower',$haystack));
}
}
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