X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/mediawiki.git/blobdiff_plain/d75ce11339b35963b5f8c3d53190819c1c025716..6932310fd58ebef145fa01eb76edf7150284d8ea:/includes/specials/SpecialUnusedimages.php

diff --git a/includes/specials/SpecialUnusedimages.php b/includes/specials/SpecialUnusedimages.php
index 9d9868f6..9fcbf15f 100644
--- a/includes/specials/SpecialUnusedimages.php
+++ b/includes/specials/SpecialUnusedimages.php
@@ -1,74 +1,85 @@
 <?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
  */
 
 /**
- * implements Special:Unusedimages
+ * A special page that lists unused images
+ *
  * @ingroup SpecialPage
  */
 class UnusedimagesPage extends ImageQueryPage {
+	function __construct( $name = 'Unusedimages' ) {
+		parent::__construct( $name );
+	}
 
-	function isExpensive() { return true; }
-
-	function getName() {
-		return 'Unusedimages';
+	function isExpensive() {
+		return true;
 	}
 
 	function sortDescending() {
 		return false;
 	}
-	function isSyndicated() { return false; }
 
-	function getSQL() {
-		global $wgCountCategorizedImagesAsUsed, $wgDBtype;
-		$dbr = wfGetDB( DB_SLAVE );
+	function isSyndicated() {
+		return false;
+	}
 
-		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)';
-		}
+	function getQueryInfo() {
+		$retval = [
+			'tables' => [ 'image', 'imagelinks' ],
+			'fields' => [
+				'namespace' => NS_FILE,
+				'title' => 'img_name',
+				'value' => 'img_timestamp',
+			],
+			'conds' => [ 'il_to IS NULL' ],
+			'join_conds' => [ 'imagelinks' => [ 'LEFT JOIN', 'il_to = img_name' ] ]
+		];
 
-		if ( $wgCountCategorizedImagesAsUsed ) {
-			list( $page, $image, $imagelinks, $categorylinks ) = $dbr->tableNamesN( 'page', 'image', 'imagelinks', 'categorylinks' );
+		if ( $this->getConfig()->get( 'CountCategorizedImagesAsUsed' ) ) {
+			// Order is significant
+			$retval['tables'] = [ 'image', 'page', 'categorylinks',
+				'imagelinks' ];
+			$retval['conds']['page_namespace'] = NS_FILE;
+			$retval['conds'][] = 'cl_from IS NULL';
+			$retval['conds'][] = 'img_name = page_title';
+			$retval['join_conds']['categorylinks'] = [
+				'LEFT JOIN', 'cl_from = page_id' ];
+			$retval['join_conds']['imagelinks'] = [
+				'LEFT JOIN', 'il_to = page_title' ];
+		}
 
-			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 $retval;
+	}
 
-			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 usesTimestamps() {
+		return true;
 	}
 
 	function getPageHeader() {
-		return wfMsgExt( 'unusedimagestext', array( 'parse' ) );
+		return $this->msg( 'unusedimagestext' )->parseAsBlock();
 	}
 
-}
-
-/**
- * Entry point
- */
-function wfSpecialUnusedimages() {
-	list( $limit, $offset ) = wfCheckLimits();
-	$uip = new UnusedimagesPage();
-
-	return $uip->doQuery( $offset, $limit );
+	protected function getGroupName() {
+		return 'maintenance';
+	}
 }