From 37484d2d3e4a4bbba2151fd441c526b7607c5eff Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aaron@users.mediawiki.org>
Date: Wed, 12 Mar 2008 22:27:25 +0000
Subject: [PATCH] * Merge in log_deleted constants * Add userCan() and
 isDeleted()

---
 includes/LogPage.php | 40 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/includes/LogPage.php b/includes/LogPage.php
index 0f7c169ecd..8522980eec 100644
--- a/includes/LogPage.php
+++ b/includes/LogPage.php
@@ -30,6 +30,10 @@
  *
  */
 class LogPage {
+	const DELETED_ACTION = 1;
+	const DELETED_COMMENT = 2;
+	const DELETED_USER = 4;
+    const DELETED_RESTRICTED = 8;
 	/* @access private */
 	var $type, $action, $comment, $params, $target;
 	/* @acess public */
@@ -311,6 +315,40 @@ class LogPage {
 		return $messages[$flag];
 	}
 	
-}
+	/**
+	 * Determine if the current user is allowed to view a particular
+	 * field of this log row, if it's marked as deleted.
+	 * @param Row $row
+	 * @param int $field
+	 * @return bool
+	 */
+	public static function userCan( $row, $field ) {
+		if( ( $row->log_deleted & $field ) == $field ) {
+			global $wgUser;
+			$permission = ( $row->log_deleted & self::DELETED_RESTRICTED ) == self::DELETED_RESTRICTED
+				? 'hiderevision'
+				: 'deleterevision';
+			wfDebug( "Checking for $permission due to $field match on $event->log_deleted\n" );
+			return $wgUser->isAllowed( $permission );
+		} else {
+			return true;
+		}
+	}
 
+	/**
+	 * int $field one of DELETED_* bitfield constants
+	 * @param Row $row
+	 * @return bool
+	 */
+	public static function isDeleted( $row, $field ) {
+		return ($row->log_deleted & $field) == $field;
+	}
+}
 
+/**
+ * Aliases for backwards compatibility with 1.6
+ */
+define( 'MW_LOG_DELETED_ACTION', LogPage::DELETED_ACTION );
+define( 'MW_LOG_DELETED_USER', LogPage::DELETED_USER );
+define( 'MW_LOG_DELETED_COMMENT', LogPage::DELETED_COMMENT );
+define( 'MW_LOG_DELETED_RESTRICTED', LogPage::DELETED_RESTRICTED );
-- 
2.20.1