3 * Implements Special:Unusedcategories
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
18 * http://www.gnu.org/copyleft/gpl.html
21 * @ingroup SpecialPage
25 * @ingroup SpecialPage
27 class UnusedCategoriesPage
extends QueryPage
{
29 function isExpensive() { return true; }
32 return 'Unusedcategories';
35 function getPageHeader() {
36 return wfMsgExt( 'unusedcategoriestext', array( 'parse' ) );
41 $dbr = wfGetDB( DB_SLAVE
);
42 list( $categorylinks, $page ) = $dbr->tableNamesN( 'categorylinks', 'page' );
43 return "SELECT 'Unusedcategories' as type,
44 {$NScat} as namespace, page_title as title, page_title as value
46 LEFT JOIN $categorylinks ON page_title=cl_to
48 AND page_namespace = {$NScat}
49 AND page_is_redirect = 0";
52 function formatResult( $skin, $result ) {
53 $title = Title
::makeTitle( NS_CATEGORY
, $result->title
);
54 return $skin->link( $title, $title->getText() );
59 function wfSpecialUnusedCategories() {
60 list( $limit, $offset ) = wfCheckLimits();
61 $uc = new UnusedCategoriesPage();
62 return $uc->doQuery( $offset, $limit );