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<?php
/**
*
* @package MediaWiki
* @subpackage SpecialPage
*/
/**
*
*/
require_once('QueryPage.php');
/**
*
* @package MediaWiki
* @subpackage SpecialPage
*/
class DoubleRedirectsPage extends PageQueryPage {
function getName() {
return 'DoubleRedirects';
}
function isExpensive( ) { return true; }
function isSyndicated() { return false; }
function getPageHeader( ) {
#FIXME : probably need to add a backlink to the maintenance page.
return '<p>'.wfMsg("doubleredirectstext")."</p><br />\n";
}
function getSQL() {
$dbr =& wfGetDB( DB_SLAVE );
extract( $dbr->tableNames( 'page', 'links' ) );
$sql = "SELECT 'DoubleRedirects' as type," .
" pa.page_namespace as namespace, pa.page_title as title," .
" pb.page_namespace as nsb, pb.page_title as tb," .
" pc.page_namespace as nsc, pc.page_title as tc" .
" FROM $links AS la, $links AS lb, $page AS pa, $page AS pb, $page AS pc" .
" WHERE pa.page_is_redirect=1 AND pb.page_is_redirect=1" .
" AND la.l_from=pa.page_id" .
" AND la.l_to=pb.page_id" .
" AND lb.l_from=pb.page_id" .
" AND lb.l_to=pc.page_id";
return $sql;
}
function getOrder() {
return '';
}
function formatResult( $skin, $result ) {
$fname = 'DoubleRedirectsPage::formatResult';
$titleA = Title::makeTitle( $result->namespace, $result->title );
if ( $result && !isset( $result->nsb ) ) {
$dbr =& wfGetDB( DB_SLAVE );
extract( $dbr->tableNames( 'page', 'links' ) );
$encTitle = $dbr->addQuotes( $result->title );
$sql = "SELECT pa.page_namespace as namespace, pa.page_title as title," .
" pb.page_namespace as nsb, pb.page_title as tb," .
" pc.page_namespace as nsc, pc.page_title as tc" .
" FROM $links AS la, $links AS lb, $page AS pa, $page AS pb, $page AS pc" .
" WHERE pa.page_is_redirect=1 AND pb.page_is_redirect=1" .
" AND la.l_from=pa.page_id" .
" AND la.l_to=pb.page_id" .
" AND lb.l_from=pb.page_id" .
" AND lb.l_to=pc.page_id" .
" AND pa.page_namespace={$result->namespace}" .
" AND pa.page_title=$encTitle";
$res = $dbr->query( $sql, $fname );
if ( $res ) {
$result = $dbr->fetchObject( $res );
}
}
if ( !$result ) {
return '';
}
$titleB = Title::makeTitle( $result->nsb, $result->tb );
$titleC = Title::makeTitle( $result->nsc, $result->tc );
$linkA = $skin->makeKnownLinkObj( $titleA,'', 'redirect=no' );
$edit = $skin->makeBrokenLinkObj( $titleA, "(".wfMsg("qbedit").")" , 'redirect=no');
$linkB = $skin->makeKnownLinkObj( $titleB, '', 'redirect=no' );
$linkC = $skin->makeKnownLinkObj( $titleC );
return "$linkA $edit → $linkB → $linkC";
}
}
/**
* constructor
*/
function wfSpecialDoubleRedirects() {
list( $limit, $offset ) = wfCheckLimits();
$sdr = new DoubleRedirectsPage();
return $sdr->doQuery( $offset, $limit );
}
?>
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