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<?php
/**
* @file
* @ingroup SpecialPage
*/
/**
* implements Special:Unusedimages
* @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, $wgDBtype;
$dbr = wfGetDB( DB_SLAVE );
switch ($wgDBtype) {
case 'mysql':
$epoch = 'UNIX_TIMESTAMP(img_timestamp)';
break;
case 'oracle':
$epoch = '((trunc(img_timestamp) - to_date(\'19700101\',\'YYYYMMDD\')) * 86400)';
break;
case 'sqlite':
$epoch = 'img_timestamp';
break;
default:
$epoch = 'EXTRACT(epoch FROM 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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