Put diffs into the RecentChanges RSS/Atom feed to make it more useful for offline...

Probably will want to do caching of diffs before pushing this one out the door, but it's not as bad as all that; nothing has to be parsed, just diffed.

diff --git a/includes/SpecialRecentchanges.php b/includes/SpecialRecentchanges.php
index 4d468a7..d227aa0 100644 (file)
--- a/includes/SpecialRecentchanges.php
+++ b/includes/SpecialRecentchanges.php
@@ -135,7 +135,7 @@ function wfSpecialRecentchanges( $par ) {
                        $talkpage = $title->getTalkPage();
                        $item = new FeedItem(
                                $title->getPrefixedText(),
-                               htmlspecialchars( $obj->rc_comment ),
+                               rcFormatDiff( $obj ),
                                $title->getFullURL(),
                                $obj->rc_timestamp,
                                $obj->rc_user_text,
@@ -226,4 +226,45 @@ function rcLimitLinks( $page='Recentchanges', $more='', $doall = false ) {
        return $note;
 }
 
+function rcFormatDiff( $row ) {
+       require_once( 'DifferenceEngine.php' );
+       $comment = "<p>" . htmlspecialchars( $row->rc_comment ) . "</p>\n";
+       
+       if( $row->rc_namespace >= 0 ) {
+               global $wgContLang;
+               
+               #$diff =& new DifferenceEngine( $row->rc_this_oldid, $row->rc_last_oldid, $row->rc_id );
+               #$diff->showDiffPage();
+               
+               $dbr =& wfGetDB( DB_SLAVE );
+               if( $row->rc_this_oldid ) {
+                       $newrow = $dbr->selectRow( 'old',
+                               array( 'old_flags', 'old_text' ),
+                               array( 'old_id' => $row->rc_this_oldid ) );
+                       $newtext = Article::getRevisionText( $newrow );
+               } else {
+                       $newrow = $dbr->selectRow( 'cur',
+                               array( 'cur_text' ),
+                               array( 'cur_id' => $row->rc_cur_id ) );
+                       $newtext = $newrow->cur_text;
+               }
+               if( $row->rc_last_oldid ) {
+                       $oldrow = $dbr->selectRow( 'old',
+                               array( 'old_flags', 'old_text' ),
+                               array( 'old_id' => $row->rc_last_oldid ) );
+                       $oldtext = Article::getRevisionText( $oldrow );
+                       $diffText = DifferenceEngine::getDiff( $oldtext, $newtext,
+                         wfMsg( 'revisionasof', $wgContLang->timeanddate( $row->rc_timestamp ) ),
+                         wfMsg( 'currentrev' ) );
+               } else {
+                       $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' . 
+                               '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
+               }
+               
+               return $comment . $diffText;
+       }
+       
+       return $comment;        
+}
+
 ?>