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<?php
/**
* Implements Special:Unusedcategories
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup SpecialPage
*/
/**
* @ingroup SpecialPage
*/
class UnusedCategoriesPage extends QueryPage {
function isExpensive() {
return true;
}
function __construct( $name = 'Unusedcategories' ) {
parent::__construct( $name );
}
function getPageHeader() {
return $this->msg( 'unusedcategoriestext' )->parseAsBlock();
}
function getQueryInfo() {
return array(
'tables' => array( 'page', 'categorylinks' ),
'fields' => array( 'namespace' => 'page_namespace',
'title' => 'page_title',
'value' => 'page_title' ),
'conds' => array( 'cl_from IS NULL',
'page_namespace' => NS_CATEGORY,
'page_is_redirect' => 0 ),
'join_conds' => array( 'categorylinks' => array(
'LEFT JOIN', 'cl_to = page_title' ) )
);
}
/**
* A should come before Z (bug 30907)
* @return bool
*/
function sortDescending() {
return false;
}
/**
* @param Skin $skin
* @param object $result Result row
* @return string
*/
function formatResult( $skin, $result ) {
$title = Title::makeTitle( NS_CATEGORY, $result->title );
return Linker::link( $title, htmlspecialchars( $title->getText() ) );
}
protected function getGroupName() {
return 'maintenance';
}
}
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