Merge "(bug 40098) Don't parse the section's name in the summary when creating a...

[lhc/web/wiklou.git] / includes / Revision.php

diff --git a/includes/Revision.php b/includes/Revision.php
index 9da031e..20cc8f5 100644 (file)
--- a/includes/Revision.php
+++ b/includes/Revision.php
@@ -1290,4 +1290,42 @@ class Revision implements IDBAccessObject {
                }
                return 0;
        }
-}
+
+       /**
+        * Check if no edits were made by other users since
+        * the time a user started editing the page. Limit to
+        * 50 revisions for the sake of performance.
+        *
+        * @since 1.20
+        *
+        * @param DatabaseBase|int $db the Database to perform the check on. May be given as a Database object or
+        *        a database identifier usable with wfGetDB.
+        * @param int $pageId the ID of the page in question
+        * @param int $userId the ID of the user in question
+        * @param string $since look at edits since this time
+        *
+        * @return bool True if the given user was the only one to edit since the given timestamp
+        */
+       public static function userWasLastToEdit( $db, $pageId, $userId, $since ) {
+               if ( !$userId ) return false;
+
+               if ( is_int( $db ) ) {
+                       $db = wfGetDB( $db );
+               }
+
+               $res = $db->select( 'revision',
+                       'rev_user',
+                       array(
+                               'rev_page' => $pageId,
+                               'rev_timestamp > ' . $db->addQuotes( $db->timestamp( $since ) )
+                       ),
+                       __METHOD__,
+                       array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
+               foreach ( $res as $row ) {
+                       if ( $row->rev_user != $userId ) {
+                               return false;
+                       }
+               }
+               return true;
+       }
+}
\ No newline at end of file