includes/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'Feed.php' );
  12 require_once( 'ChangesList.php' );
  13 require_once( 'Revision.php' );
  14
  15 /**
  16  * Constructor
  17  */
  18 function wfSpecialRecentchanges( $par ) {
  19         global $wgUser, $wgOut, $wgLang, $wgContLang, $wgTitle, $wgMemc, $wgDBname;
  20         global $wgRequest, $wgSitename, $wgLanguageCode, $wgContLanguageCode;
  21         global $wgFeedClasses, $wgUseRCPatrol;
  22         global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
  23         global $wgLinkCache;
  24         $fname = 'wfSpecialRecentchanges';
  25
  26         # Get query parameters
  27         $feedFormat = $wgRequest->getVal( 'feed' );
  28
  29         $defaultDays = $wgUser->getOption( 'rcdays' );
  30         if ( !$defaultDays ) { $defaultDays = 3; }
  31
  32         $days = $wgRequest->getInt( 'days', $defaultDays );
  33         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor' ) ) ? 1 : 0;
  34         list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  35
  36         # As a feed, use limited settings only
  37         if( $feedFormat ) {
  38                 $from = null;
  39                 $hidebots = 1;
  40                 $hideliu = 0;
  41                 $hidepatrolled = 0;
  42                 $invert = 0;
  43                 $namespace = '';
  44                 global $wgFeedLimit;
  45                 if( $limit > $wgFeedLimit ) {
  46                         $limit = $wgFeedLimit;
  47                 }
  48         } else {
  49                 $from = $wgRequest->getText( 'from' );
  50                 $hidebots = $wgRequest->getBool( 'hidebots', true );
  51                 $hideliu = $wgRequest->getBool( 'hideliu' );
  52                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled' );
  53                 $namespace = $wgRequest->getVal( 'namespace', '' );
  54                 $namespace = $namespace === '' ? NULL : $namespace;
  55                 $invert = $wgRequest->getBool( 'invert' );
  56
  57                 # Get query parameters from path
  58                 if( $par ) {
  59                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  60                         if( in_array( 'hidebots', $bits ) ) $hidebots = 1;
  61                         if( in_array( 'bots', $bits ) ) $hidebots = 0;
  62                         if( in_array( 'hideminor', $bits ) ) $hideminor = 1;
  63                         if( in_array( 'minor', $bits ) ) $hideminor = 0;
  64                         if( in_array( 'hideliu', $bits) ) $hideliu = 1;
  65                         if( in_array( 'hidepatrolled', $bits) ) $hidepatrolled = 1;
  66                 }
  67         }
  68
  69
  70         # Database connection and caching
  71         $dbr =& wfGetDB( DB_SLAVE );
  72         extract( $dbr->tableNames( 'recentchanges', 'watchlist' ) );
  73
  74
  75         # 10 seconds server-side caching max
  76         $wgOut->setSquidMaxage( 10 );
  77
  78         # Get last modified date, for client caching
  79         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
  80         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
  81         if ( $feedFormat || !$wgUseRCPatrol ) {
  82                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
  83                         # Client cache fresh and headers sent, nothing more to do.
  84                         return;
  85                 }
  86         }
  87
  88         # Output header
  89         $rctext = wfMsgForContent( "recentchangestext" );
  90         $wgOut->addWikiText( $rctext );
  91
  92
  93         $cutoff_unixtime = time() - ( $days * 86400 );
  94         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
  95         $cutoff = $dbr->timestamp( $cutoff_unixtime );
  96         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
  97                 $cutoff = $dbr->timestamp($from);
  98         } else {
  99                 $from = '';
 100         }
 101
 102         $sk = $wgUser->getSkin();
 103
 104         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 105
 106         $hidem  = $hideminor ? 'AND rc_minor=0' : '';
 107         $hidem .= $hidebots ? ' AND rc_bot=0' : '';
 108         $hidem .= $hideliu ? ' AND rc_user=0' : '';
 109         $hidem .= $hidepatrolled ? ' AND rc_patrolled=0' : '';
 110         $hidem .= is_null($namespace) ? '' : ' AND rc_namespace' . ($invert ? '!=' : '=') . $namespace;
 111
 112         $options = array(
 113                 'hideminor'     => $hideminor,
 114                 'hideliu'       => $hideliu,
 115                 'hidebots'      => $hidebots,
 116                 'hidepatrolled' => $hidepatrolled,
 117                 'days'          => $days,
 118                 'limit'         => $limit,
 119                 'from'          => $from,
 120                 'namespace'     => $namespace,
 121                 'invert'        => $invert,
 122         );
 123
 124         $uid = $wgUser->getID();
 125
 126         // Perform query
 127         $sql2 = "SELECT $recentchanges.*" . ($uid ? ",wl_user,wl_notificationtimestamp" : "") . " FROM $recentchanges " .
 128           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
 129           "WHERE rc_timestamp > '{$cutoff}' {$hidem} " .
 130           "ORDER BY rc_timestamp DESC LIMIT {$limit}";
 131         $res = $dbr->query( $sql2, $fname );
 132
 133         // Fetch results, prepare a batch link existence check query
 134         $rows = array();
 135         $batch = new LinkBatch;
 136         while( $row = $dbr->fetchObject( $res ) ){
 137                 $rows[] = $row;
 138                 // User page link
 139                 $title = Title::makeTitleSafe( NS_USER, $row->rc_user_text );
 140                 $batch->addObj( $title );
 141
 142                 // User talk
 143                 $title = Title::makeTitleSafe( NS_USER_TALK, $row->rc_user_text );
 144                 $batch->addObj( $title );
 145
 146         }
 147         $dbr->freeResult( $res );
 148
 149         // Run existence checks
 150         $batch->execute( $wgLinkCache );
 151
 152         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $options ) . '</div>' );
 153         $wgOut->addHTML( namespaceForm( $namespace, $invert) );
 154         foreach ( $options as $key => $value ) {
 155         if ($value != 'namespace' && $value != 'invert')
 156                 $wgOut->addHTML( "<input type='hidden' name='$key' value='$value' />" );
 157         }
 158
 159
 160         if( $feedFormat ) {
 161                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 162         } else {
 163 # Web output...
 164                 $wgOut->setSyndicated( true );
 165                 $list =& new ChangesList( $sk );
 166                 $s = $list->beginRecentChangesList();
 167                 $counter = 1;
 168                 foreach( $rows as $obj ){
 169                         if( $limit == 0) {
 170                                 break;
 171                         }
 172
 173                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 174                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 175                                 $rc = RecentChange::newFromRow( $obj );
 176                                 $rc->counter = $counter++;
 177
 178                                 if ($wgShowUpdatedMarker
 179                                         && $wgUser->getOption( 'showupdated' )
 180                                         && !empty( $obj->wl_notificationtimestamp )
 181                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 182                                                 $rc->notificationtimestamp = true;
 183                                 } else {
 184                                         $rc->notificationtimestamp = false;
 185                                 }
 186
 187                                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 188                                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" . $dbr->strencode($obj->rc_title) ."' AND wl_namespace=$obj->rc_namespace" ;
 189                                         $res3 = $dbr->query( $sql3, 'wfSpecialRecentChanges');
 190                                         $x = $dbr->fetchObject( $res3 );
 191                                         $rc->numberofWatchingusers = $x->n;
 192                                 } else {
 193                                         $rc->numberofWatchingusers = 0;
 194                                 }
 195                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 196                                 --$limit;
 197                         }
 198                 }
 199                 $s .= $list->endRecentChangesList();
 200                 $wgOut->addHTML( $s );
 201         }
 202 }
 203
 204 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 205         global $messageMemc, $wgDBname, $wgFeedCacheTimeout;
 206         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 207
 208         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 209                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 210                 return false;
 211         }
 212
 213         $timekey = "$wgDBname:rcfeed:$feedFormat:timestamp";
 214         $key = "$wgDBname:rcfeed:$feedFormat:limit:$limit:minor:$hideminor";
 215
 216         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 217                 ' [' . $wgContLanguageCode . ']';
 218         $feed = new $wgFeedClasses[$feedFormat](
 219                 $feedTitle,
 220                 htmlspecialchars( wfMsgForContent( 'recentchangestext' ) ),
 221                 $wgTitle->getFullUrl() );
 222
 223         /**
 224          * Bumping around loading up diffs can be pretty slow, so where
 225          * possible we want to cache the feed output so the next visitor
 226          * gets it quick too.
 227          */
 228         $cachedFeed = false;
 229         if( $feedLastmod = $messageMemc->get( $timekey ) ) {
 230                 /**
 231                  * If the cached feed was rendered very recently, we may
 232                  * go ahead and use it even if there have been edits made
 233                  * since it was rendered. This keeps a swarm of requests
 234                  * from being too bad on a super-frequently edited wiki.
 235                  */
 236                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 237                                 < $wgFeedCacheTimeout
 238                         || wfTimestamp( TS_UNIX, $feedLastmod )
 239                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 240                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 241                         $cachedFeed = $messageMemc->get( $key );
 242                 } else {
 243                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 244                 }
 245         }
 246         if( is_string( $cachedFeed ) ) {
 247                 wfDebug( "RC: Outputting cached feed\n" );
 248                 $feed->httpHeaders();
 249                 echo $cachedFeed;
 250         } else {
 251                 wfDebug( "RC: rendering new feed and caching it\n" );
 252                 ob_start();
 253                 rcDoOutputFeed( $rows, $feed );
 254                 $cachedFeed = ob_get_contents();
 255                 ob_end_flush();
 256
 257                 $expire = 3600 * 24; # One day
 258                 $messageMemc->set( $key, $cachedFeed );
 259                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 260         }
 261         return true;
 262 }
 263
 264 function rcDoOutputFeed( $rows, &$feed ) {
 265         global $wgSitename, $wgFeedClasses, $wgContLanguageCode;
 266
 267         $feed->outHeader();
 268
 269         # Merge adjacent edits by one user
 270         $sorted = array();
 271         $n = 0;
 272         foreach( $rows as $obj ) {
 273                 if( $n > 0 &&
 274                         $obj->rc_namespace >= 0 &&
 275                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 276                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 277                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 278                 } else {
 279                         $sorted[$n] = $obj;
 280                         $n++;
 281                 }
 282                 $first = false;
 283         }
 284
 285         foreach( $sorted as $obj ) {
 286                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 287                 $talkpage = $title->getTalkPage();
 288                 $item = new FeedItem(
 289                         $title->getPrefixedText(),
 290                         rcFormatDiff( $obj ),
 291                         $title->getFullURL(),
 292                         $obj->rc_timestamp,
 293                         $obj->rc_user_text,
 294                         $talkpage->getFullURL()
 295                         );
 296                 $feed->outItem( $item );
 297         }
 298         $feed->outFooter();
 299 }
 300
 301 /**
 302  *
 303  */
 304 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 305         global $wgUser, $wgLang, $wgContLang;
 306         $sk = $wgUser->getSkin();
 307         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 308           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 309           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 310         return $s;
 311 }
 312
 313 /**
 314  *
 315  */
 316 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 317         global $wgUser, $wgLang, $wgContLang;
 318         $sk = $wgUser->getSkin();
 319         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 320           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 321           ($lim ? '&limit='.$lim : '') );
 322         return $s;
 323 }
 324
 325 /**
 326  * Used by Recentchangeslinked
 327  */
 328 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 329         $botLink = '', $liuLink = '', $patrLink = '' ) {
 330         if ($more != '') $more .= '&';
 331         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 332           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 333           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 334           rcCountLink( 500, $days, $page, $more  ) .
 335           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 336         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 337           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 338           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 339           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 340           rcDaysLink( $limit, 30, $page, $more  ) .
 341           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 342         $shm = wfMsg( 'showhideminor', $minorLink, $botLink, $liuLink, $patrLink );
 343         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 344         return $note;
 345 }
 346
 347
 348 /**
 349  * Makes change an option link which carries all the other options
 350  */
 351 function makeOptionsLink( $title, $override, $options ) {
 352         global $wgUser, $wgLang, $wgContLang;
 353         $sk = $wgUser->getSkin();
 354         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 355                 $title, wfArrayToCGI( $override, $options ) );
 356 }
 357
 358 /**
 359  * Creates the options panel
 360  */
 361 function rcOptionsPanel( $options ) {
 362         global $wgLang;
 363
 364         if( $options['from'] )
 365                 $note = wfMsg( 'rcnotefrom', $wgLang->formatNum( $options['limit'] ), $wgLang->timeanddate( $options['from'], true ) );
 366         else
 367                 $note = wfMsg( 'rcnote', $wgLang->formatNum( $options['limit'] ), $wgLang->formatNum( $options['days'] ) );
 368
 369         // limit links
 370         $cl = '';
 371         $options_limit = array(50, 100, 250, 500);
 372         $i = 0;
 373         while ( $i+1 < count($options_limit) ) {
 374                 $cl .=  makeOptionsLink( $options_limit[$i], array( 'limit' => $options_limit[$i] ), $options) . ' | ' ;
 375                 $i++;
 376         }
 377         $cl .=  makeOptionsLink( $options_limit[$i], array( 'limit' => $options_limit[$i] ), $options) ;
 378
 379         // day links, reset 'from' to none
 380         $dl = '';
 381         $options_days = array(1, 3, 7, 14, 30);
 382         $i = 0;
 383         while ( $i+1 < count($options_days) ) {
 384                 $dl .=  makeOptionsLink( $options_days[$i], array( 'days' => $options_days[$i], 'from' => '' ), $options) . ' | ' ;
 385                 $i++;
 386         }
 387         $dl .=  makeOptionsLink( $options_days[$i], array( 'days' => $options_days[$i], 'from' => '' ), $options) ;
 388
 389         // show/hide links
 390         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 391         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 392                 array( 'hideminor' => 1-$options['hideminor'] ), $options);
 393         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 394                 array( 'hidebots' => 1-$options['hidebots'] ), $options);
 395         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 396                 array( 'hideliu' => 1-$options['hideliu'] ), $options);
 397         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 398                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $options);
 399
 400         $hl = wfMsg( 'showhideminor', $minorLink, $botLink, $liuLink, $patrLink );
 401
 402         // show from this onward link
 403         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 404         $tl =  makeOptionsLink( $now, array( 'from' => $now), $options );
 405
 406         $rclinks = wfMsg( 'rclinks', $cl, $dl, $hl );
 407         $rclistfrom = wfMsg( 'rclistfrom', $tl );
 408         return "$note<br />$rclinks<br />$rclistfrom";
 409
 410 }
 411
 412 /**<F2>
 413  * Creates the choose namespace selection
 414  *
 415  * @access private
 416  *
 417  * @param mixed $namespace The key of the currently selected namespace, NULL
 418  *              if there is none
 419  * @param bool $invert Whether to invert the namespace selection
 420  *
 421  * @return string
 422  */
 423 function namespaceForm ( $namespace, $invert ) {
 424         global $wgContLang, $wgScript;
 425         $t = Title::makeTitle( NS_SPECIAL, 'Recentchanges' );
 426
 427         $namespaceselect = "<select name='namespace' id='nsselectbox'>";
 428         $namespaceselect .= '<option value="" ' . (is_null($namespace) ? ' selected="selected"' : '') . '>' . wfMsg( 'contributionsall' ) . '</option>';
 429         $arr =  $wgContLang->getFormattedNamespaces();
 430         foreach ( $arr as $ns => $name ) {
 431                 if( $ns < NS_MAIN )
 432                         continue;
 433                 $n = $ns === NS_MAIN ? wfMsg ( 'blanknamespace' ) : $name;
 434                 $sel = $namespace === (string)$ns ? ' selected="selected"' : '';
 435                 $namespaceselect .= "<option value='$ns'$sel>$n</option>";
 436         }
 437         $namespaceselect .= '</select>';
 438
 439         $submitbutton = '<input type="submit" value="' . wfMsg( 'allpagessubmit' ) . '" />';
 440         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 441
 442         $out = "<div class='namespaceselector'><form method='get' action='{$wgScript}'>\n";
 443         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 444         $out .= "
 445 <table id='nsselect' class='recentchanges'>
 446         <tr>
 447                 <td align='right'><label for='nsselectbox'>" . wfMsg('namespace') . "</label></td>
 448                 <td align='left'>$namespaceselect $invertbox <label for='nsinvert'>" . wfMsg('invert') . "</label> $submitbutton </td>
 449         </tr>
 450 </table>";
 451         $out .= '</form></div>';
 452         return $out;
 453 }
 454
 455
 456 /**
 457  * Format a diff for the newsfeed
 458  */
 459 function rcFormatDiff( $row ) {
 460         $fname = 'rcFormatDiff';
 461         wfProfileIn( $fname );
 462
 463         require_once( 'DifferenceEngine.php' );
 464         $comment = "<p>" . htmlspecialchars( $row->rc_comment ) . "</p>\n";
 465
 466         if( $row->rc_namespace >= 0 ) {
 467                 global $wgContLang;
 468
 469                 #$diff =& new DifferenceEngine( $row->rc_this_oldid, $row->rc_last_oldid, $row->rc_id );
 470                 #$diff->showDiffPage();
 471
 472                 $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 473                 $dbr =& wfGetDB( DB_SLAVE );
 474                 $newrev =& Revision::newFromTitle( $titleObj, $row->rc_this_oldid );
 475                 if( $newrev ) {
 476                         $newtext = $newrev->getText();
 477                 } else {
 478                         $diffText = "<p>Can't load revision $row->rc_this_oldid</p>";
 479                         wfProfileOut( $fname );
 480                         return $comment . $diffText;
 481                 }
 482
 483                 if( $row->rc_last_oldid ) {
 484                         wfProfileIn( "$fname-dodiff" );
 485                         $oldrev =& Revision::newFromId( $row->rc_last_oldid );
 486                         if( !$oldrev ) {
 487                                 $diffText = "<p>Can't load old revision $row->rc_last_oldid</p>";
 488                                 wfProfileOut( $fname );
 489                                 return $comment . $diffText;
 490                         }
 491                         $oldtext = $oldrev->getText();
 492
 493                         # Old entries may contain illegal characters
 494                         # which will damage output
 495                         $oldtext = UtfNormal::cleanUp( $oldtext );
 496
 497                         global $wgFeedDiffCutoff;
 498                         if( strlen( $newtext ) > $wgFeedDiffCutoff ||
 499                                 strlen( $oldtext ) > $wgFeedDiffCutoff ) {
 500                                 $diffLink = $titleObj->escapeFullUrl(
 501                                         'diff=' . $row->rc_this_oldid .
 502                                         '&oldid=' . $row->rc_last_oldid );
 503                                 $diffText = '<a href="' .
 504                                         $diffLink .
 505                                         '">' .
 506                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 507                                         '</a>';
 508                         } else {
 509                                 $diffText = DifferenceEngine::getDiff( $oldtext, $newtext,
 510                                   wfMsg( 'revisionasof', $wgContLang->timeanddate( $row->rc_timestamp ) ),
 511                                   wfMsg( 'currentrev' ) );
 512                         }
 513                         wfProfileOut( "$fname-dodiff" );
 514                 } else {
 515                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 516                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 517                 }
 518
 519                 wfProfileOut( $fname );
 520                 return $comment . $diffText;
 521         }
 522
 523         wfProfileOut( $fname );
 524         return $comment;
 525 }
 526
 527 ?>