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path: root/includes/specials/SpecialListredirects.php
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<?php
/**
 * Implements Special:Listredirects
 *
 * Copyright © 2006 Rob Church
 *
 * 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
 * @author Rob Church <robchur@gmail.com>
 */

/**
 * Special:Listredirects - Lists all the redirects on the wiki.
 * @ingroup SpecialPage
 */
class ListredirectsPage extends QueryPage {

	function getName() { return( 'Listredirects' ); }
	function isExpensive() { return( true ); }
	function isSyndicated() { return( false ); }
	function sortDescending() { return( false ); }

	function getSQL() {
		$dbr = wfGetDB( DB_SLAVE );
		$page = $dbr->tableName( 'page' );
		$sql = "SELECT 'Listredirects' AS type, page_title AS title, page_namespace AS namespace, 
			0 AS value FROM $page WHERE page_is_redirect = 1";
		return( $sql );
	}

	function formatResult( $skin, $result ) {
		global $wgContLang;

		# Make a link to the redirect itself
		$rd_title = Title::makeTitle( $result->namespace, $result->title );
		$rd_link = $skin->link(
			$rd_title,
			null,
			array(),
			array( 'redirect' => 'no' )
		);

		# Find out where the redirect leads
		$revision = Revision::newFromTitle( $rd_title );
		if( $revision ) {
			# Make a link to the destination page
			$target = Title::newFromRedirect( $revision->getText() );
			if( $target ) {
				$arr = $wgContLang->getArrow() . $wgContLang->getDirMark();
				$targetLink = $skin->link( $target );
				return "$rd_link $arr $targetLink";
			} else {
				return "<del>$rd_link</del>";
			}
		} else {
			return "<del>$rd_link</del>";
		}
	}
}

function wfSpecialListredirects() {
	list( $limit, $offset ) = wfCheckLimits();
	$lrp = new ListredirectsPage();
	$lrp->doQuery( $offset, $limit );
}