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<?php
/**
* Implements Special:Unusedimages
*
* 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
*/
/**
* A special page that lists unused images
*
* @ingroup SpecialPage
*/
class UnusedimagesPage extends ImageQueryPage {
function isExpensive() { return true; }
function getName() {
return 'Unusedimages';
}
function sortDescending() {
return false;
}
function isSyndicated() { return false; }
function getSQL() {
global $wgCountCategorizedImagesAsUsed;
$dbr = wfGetDB( DB_SLAVE );
$epoch = $dbr->unixTimestamp( 'img_timestamp' );
if ( $wgCountCategorizedImagesAsUsed ) {
list( $page, $image, $imagelinks, $categorylinks ) = $dbr->tableNamesN( 'page', 'image', 'imagelinks', 'categorylinks' );
return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, $epoch as value,
img_user, img_user_text, img_description
FROM ((($page AS I LEFT JOIN $categorylinks AS L ON I.page_id = L.cl_from)
LEFT JOIN $imagelinks AS P ON I.page_title = P.il_to)
INNER JOIN $image AS G ON I.page_title = G.img_name)
WHERE I.page_namespace = ".NS_FILE." AND L.cl_from IS NULL AND P.il_to IS NULL";
} else {
list( $image, $imagelinks ) = $dbr->tableNamesN( 'image','imagelinks' );
return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, $epoch as value,
img_user, img_user_text, img_description
FROM $image LEFT JOIN $imagelinks ON img_name=il_to WHERE il_to IS NULL ";
}
}
function getPageHeader() {
return wfMsgExt( 'unusedimagestext', array( 'parse' ) );
}
}
/**
* Entry point
*/
function wfSpecialUnusedimages() {
list( $limit, $offset ) = wfCheckLimits();
$uip = new UnusedimagesPage();
return $uip->doQuery( $offset, $limit );
}
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