1 files changed, 94 insertions, 0 deletions
diff --git a/www/wiki/includes/specials/SpecialDeadendpages.php b/www/wiki/includes/specials/SpecialDeadendpages.php
new file mode 100644
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+++ b/www/wiki/includes/specials/SpecialDeadendpages.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * Implements Special:Deadenpages
+ *
+ * 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 list pages that contain no link to other pages
+ *
+ * @ingroup SpecialPage
+ */
+class DeadendPagesPage extends PageQueryPage {
+
+	function __construct( $name = 'Deadendpages' ) {
+		parent::__construct( $name );
+	}
+
+	function getPageHeader() {
+		return $this->msg( 'deadendpagestext' )->parseAsBlock();
+	}
+
+	/**
+	 * LEFT JOIN is expensive
+	 *
+	 * @return bool
+	 */
+	function isExpensive() {
+		return true;
+	}
+
+	function isSyndicated() {
+		return false;
+	}
+
+	/**
+	 * @return bool
+	 */
+	function sortDescending() {
+		return false;
+	}
+
+	function getQueryInfo() {
+		return [
+			'tables' => [ 'page', 'pagelinks' ],
+			'fields' => [
+				'namespace' => 'page_namespace',
+				'title' => 'page_title',
+				'value' => 'page_title'
+			],
+			'conds' => [
+				'pl_from IS NULL',
+				'page_namespace' => MWNamespace::getContentNamespaces(),
+				'page_is_redirect' => 0
+			],
+			'join_conds' => [
+				'pagelinks' => [
+					'LEFT JOIN',
+					[ 'page_id=pl_from' ]
+				]
+			]
+		];
+	}
+
+	function getOrderFields() {
+		// For some crazy reason ordering by a constant
+		// causes a filesort
+		if ( count( MWNamespace::getContentNamespaces() ) > 1 ) {
+			return [ 'page_namespace', 'page_title' ];
+		} else {
+			return [ 'page_title' ];
+		}
+	}
+
+	protected function getGroupName() {
+		return 'maintenance';
+	}
+}