includes/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  *
   4  * @addtogroup SpecialPage
   5  */
   6
   7 /**
   8  *
   9  */
  10 require_once( dirname(__FILE__) . '/ChangesList.php' );
  11
  12 /**
  13  * Constructor
  14  */
  15 function wfSpecialRecentchanges( $par, $specialPage ) {
  16         global $wgUser, $wgOut, $wgRequest, $wgUseRCPatrol;
  17         global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
  18         global $wgAllowCategorizedRecentChanges ;
  19         $fname = 'wfSpecialRecentchanges';
  20
  21         # Get query parameters
  22         $feedFormat = $wgRequest->getVal( 'feed' );
  23
  24         /* Checkbox values can't be true by default, because
  25          * we cannot differentiate between unset and not set at all
  26          */
  27         $defaults = array(
  28         /* int  */ 'days' => $wgUser->getDefaultOption('rcdays'),
  29         /* int  */ 'limit' => $wgUser->getDefaultOption('rclimit'),
  30         /* bool */ 'hideminor' => false,
  31         /* bool */ 'hidebots' => true,
  32         /* bool */ 'hideanons' => false,
  33         /* bool */ 'hideliu' => false,
  34         /* bool */ 'hidepatrolled' => false,
  35         /* bool */ 'hidemyself' => false,
  36         /* text */ 'from' => '',
  37         /* text */ 'namespace' => null,
  38         /* bool */ 'invert' => false,
  39         /* bool */ 'categories_any' => false,
  40         );
  41
  42         extract($defaults);
  43
  44
  45         $days = $wgUser->getOption( 'rcdays', $defaults['days']);
  46         $days = $wgRequest->getInt( 'days', $days );
  47
  48         $limit = $wgUser->getOption( 'rclimit', $defaults['limit'] );
  49
  50         #       list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  51         $limit = $wgRequest->getInt( 'limit', $limit );
  52
  53         /* order of selection: url > preferences > default */
  54         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor') ? true : $defaults['hideminor'] );
  55
  56         # As a feed, use limited settings only
  57         if( $feedFormat ) {
  58                 global $wgFeedLimit;
  59                 if( $limit > $wgFeedLimit ) {
  60                         $limit = $wgFeedLimit;
  61                 }
  62
  63         } else {
  64
  65                 $namespace = $wgRequest->getIntOrNull( 'namespace' );
  66                 $invert = $wgRequest->getBool( 'invert', $defaults['invert'] );
  67                 $hidebots = $wgRequest->getBool( 'hidebots', $defaults['hidebots'] );
  68                 $hideanons = $wgRequest->getBool( 'hideanons', $defaults['hideanons'] );
  69                 $hideliu = $wgRequest->getBool( 'hideliu', $defaults['hideliu'] );
  70                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled', $defaults['hidepatrolled'] );
  71                 $hidemyself = $wgRequest->getBool ( 'hidemyself', $defaults['hidemyself'] );
  72                 $from = $wgRequest->getVal( 'from', $defaults['from'] );
  73
  74                 # Get query parameters from path
  75                 if( $par ) {
  76                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  77                         foreach ( $bits as $bit ) {
  78                                 if ( 'hidebots' == $bit ) $hidebots = 1;
  79                                 if ( 'bots' == $bit ) $hidebots = 0;
  80                                 if ( 'hideminor' == $bit ) $hideminor = 1;
  81                                 if ( 'minor' == $bit ) $hideminor = 0;
  82                                 if ( 'hideliu' == $bit ) $hideliu = 1;
  83                                 if ( 'hidepatrolled' == $bit ) $hidepatrolled = 1;
  84                                 if ( 'hideanons' == $bit ) $hideanons = 1;
  85                                 if ( 'hidemyself' == $bit ) $hidemyself = 1;
  86
  87                                 if ( is_numeric( $bit ) ) {
  88                                         $limit = $bit;
  89                                 }
  90
  91                                 $m = array();
  92                                 if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
  93                                         $limit = $m[1];
  94                                 }
  95
  96                                 if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
  97                                         $days = $m[1];
  98                                 }
  99                         }
 100                 }
 101         }
 102
 103         if ( $limit < 0 || $limit > 5000 ) $limit = $defaults['limit'];
 104
 105
 106         # Database connection and caching
 107         $dbr = wfGetDB( DB_SLAVE );
 108         list( $recentchanges, $watchlist ) = $dbr->tableNamesN( 'recentchanges', 'watchlist' );
 109
 110
 111         $cutoff_unixtime = time() - ( $days * 86400 );
 112         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 113         $cutoff = $dbr->timestamp( $cutoff_unixtime );
 114         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
 115                 $cutoff = $dbr->timestamp($from);
 116         } else {
 117                 $from = $defaults['from'];
 118         }
 119
 120         # 10 seconds server-side caching max
 121         $wgOut->setSquidMaxage( 10 );
 122
 123         # Get last modified date, for client caching
 124         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
 125         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
 126         if ( $feedFormat || !$wgUseRCPatrol ) {
 127                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
 128                         # Client cache fresh and headers sent, nothing more to do.
 129                         return;
 130                 }
 131         }
 132
 133         # It makes no sense to hide both anons and logged-in users
 134         # Where this occurs, force anons to be shown
 135         if( $hideanons && $hideliu )
 136                 $hideanons = false;
 137
 138         # Form WHERE fragments for all the options
 139         $hidem  = $hideminor ? 'AND rc_minor = 0' : '';
 140         $hidem .= $hidebots ? ' AND rc_bot = 0' : '';
 141         $hidem .= $hideliu ? ' AND rc_user = 0' : '';
 142         $hidem .= ( $wgUseRCPatrol && $hidepatrolled ) ? ' AND rc_patrolled = 0' : '';
 143         $hidem .= $hideanons ? ' AND rc_user != 0' : '';
 144
 145         if( $hidemyself ) {
 146                 if( $wgUser->getID() ) {
 147                         $hidem .= ' AND rc_user != ' . $wgUser->getID();
 148                 } else {
 149                         $hidem .= ' AND rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 150                 }
 151         }
 152
 153         # Namespace filtering
 154         $hidem .= is_null( $namespace ) ?  '' : ' AND rc_namespace' . ($invert ? '!=' : '=') . $namespace;
 155
 156         // This is the big thing!
 157
 158         $uid = $wgUser->getID();
 159
 160         // Perform query
 161         $forceclause = $dbr->useIndexClause("rc_timestamp");
 162         $sql2 = "SELECT * FROM $recentchanges $forceclause".
 163           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
 164           "WHERE rc_timestamp >= '{$cutoff}' {$hidem} " .
 165           "ORDER BY rc_timestamp DESC";
 166         $sql2 = $dbr->limitResult($sql2, $limit, 0);
 167         $res = $dbr->query( $sql2, $fname );
 168
 169         // Fetch results, prepare a batch link existence check query
 170         $rows = array();
 171         $batch = new LinkBatch;
 172         while( $row = $dbr->fetchObject( $res ) ){
 173                 $rows[] = $row;
 174                 if ( !$feedFormat ) {
 175                         // User page link
 176                         $title = Title::makeTitleSafe( NS_USER, $row->rc_user_text );
 177                         $batch->addObj( $title );
 178
 179                         // User talk
 180                         $title = Title::makeTitleSafe( NS_USER_TALK, $row->rc_user_text );
 181                         $batch->addObj( $title );
 182                 }
 183
 184         }
 185         $dbr->freeResult( $res );
 186
 187         if( $feedFormat ) {
 188                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 189         } else {
 190
 191                 # Web output...
 192
 193                 // Run existence checks
 194                 $batch->execute();
 195                 $any = $wgRequest->getBool( 'categories_any', $defaults['categories_any']);
 196
 197                 // Output header
 198                 if ( !$specialPage->including() ) {
 199                         $wgOut->addWikiText( wfMsgForContentNoTrans( "recentchangestext" ) );
 200
 201                         // Dump everything here
 202                         $nondefaults = array();
 203
 204                         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 205                         wfAppendToArrayIfNotDefault( 'limit', $limit , $defaults, $nondefaults);
 206                         wfAppendToArrayIfNotDefault( 'hideminor', $hideminor, $defaults, $nondefaults);
 207                         wfAppendToArrayIfNotDefault( 'hidebots', $hidebots, $defaults, $nondefaults);
 208                         wfAppendToArrayIfNotDefault( 'hideanons', $hideanons, $defaults, $nondefaults );
 209                         wfAppendToArrayIfNotDefault( 'hideliu', $hideliu, $defaults, $nondefaults);
 210                         wfAppendToArrayIfNotDefault( 'hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
 211                         wfAppendToArrayIfNotDefault( 'hidemyself', $hidemyself, $defaults, $nondefaults);
 212                         wfAppendToArrayIfNotDefault( 'from', $from, $defaults, $nondefaults);
 213                         wfAppendToArrayIfNotDefault( 'namespace', $namespace, $defaults, $nondefaults);
 214                         wfAppendToArrayIfNotDefault( 'invert', $invert, $defaults, $nondefaults);
 215                         wfAppendToArrayIfNotDefault( 'categories_any', $any, $defaults, $nondefaults);
 216
 217                         // Add end of the texts
 218                         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $defaults, $nondefaults ) . "\n" );
 219                         $wgOut->addHTML( rcNamespaceForm( $namespace, $invert, $nondefaults, $any ) . '</div>'."\n");
 220                 }
 221
 222                 // And now for the content
 223                 $wgOut->setSyndicated( true );
 224
 225                 $list = ChangesList::newFromUser( $wgUser );
 226
 227                 if ( $wgAllowCategorizedRecentChanges ) {
 228                         $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 229                         $categories = str_replace ( "|" , "\n" , $categories ) ;
 230                         $categories = explode ( "\n" , $categories ) ;
 231                         rcFilterByCategories ( $rows , $categories , $any ) ;
 232                 }
 233
 234                 $s = $list->beginRecentChangesList();
 235                 $counter = 1;
 236                 foreach( $rows as $obj ){
 237                         if( $limit == 0) {
 238                                 break;
 239                         }
 240
 241                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 242                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 243                                 $rc = RecentChange::newFromRow( $obj );
 244                                 $rc->counter = $counter++;
 245
 246                                 if ($wgShowUpdatedMarker
 247                                         && !empty( $obj->wl_notificationtimestamp )
 248                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 249                                                 $rc->notificationtimestamp = true;
 250                                 } else {
 251                                         $rc->notificationtimestamp = false;
 252                                 }
 253
 254                                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 255                                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" . $dbr->strencode($obj->rc_title) ."' AND wl_namespace=$obj->rc_namespace" ;
 256                                         $res3 = $dbr->query( $sql3, 'wfSpecialRecentChanges');
 257                                         $x = $dbr->fetchObject( $res3 );
 258                                         $rc->numberofWatchingusers = $x->n;
 259                                 } else {
 260                                         $rc->numberofWatchingusers = 0;
 261                                 }
 262                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 263                                 --$limit;
 264                         }
 265                 }
 266                 $s .= $list->endRecentChangesList();
 267                 $wgOut->addHTML( $s );
 268         }
 269 }
 270
 271 function rcFilterByCategories ( &$rows , $categories , $any ) {
 272         # Filter categories
 273         $cats = array () ;
 274         foreach ( $categories AS $cat ) {
 275                 $cat = trim ( $cat ) ;
 276                 if ( $cat == "" ) continue ;
 277                 $cats[] = $cat ;
 278         }
 279
 280         # Filter articles
 281         $articles = array () ;
 282         $a2r = array () ;
 283         foreach ( $rows AS $k => $r ) {
 284                 $nt = Title::newFromText ( $r->rc_title , $r->rc_namespace ) ;
 285                 $id = $nt->getArticleID() ;
 286                 if ( $id == 0 ) continue ; # Page might have been deleted...
 287                 if ( !in_array ( $id , $articles ) ) {
 288                         $articles[] = $id ;
 289                 }
 290                 if ( !isset ( $a2r[$id] ) ) {
 291                         $a2r[$id] = array() ;
 292                 }
 293                 $a2r[$id][] = $k ;
 294         }
 295
 296         # Shortcut?
 297         if ( count ( $articles ) == 0 OR count ( $cats ) == 0 )
 298                 return ;
 299
 300         # Look up
 301         $c = new Categoryfinder ;
 302         $c->seed ( $articles , $cats , $any ? "OR" : "AND" ) ;
 303         $match = $c->run () ;
 304
 305         # Filter
 306         $newrows = array () ;
 307         foreach ( $match AS $id ) {
 308                 foreach ( $a2r[$id] AS $rev ) {
 309                         $k = $rev ;
 310                         $newrows[$k] = $rows[$k] ;
 311                 }
 312         }
 313         $rows = $newrows ;
 314 }
 315
 316 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 317         global $messageMemc, $wgFeedCacheTimeout;
 318         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 319
 320         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 321                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 322                 return false;
 323         }
 324
 325         $timekey = wfMemcKey( 'rcfeed', $feedFormat, 'timestamp' );
 326         $key = wfMemcKey( 'rcfeed', $feedFormat, 'limit', $limit, 'minor', $hideminor );
 327
 328         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 329                 ' [' . $wgContLanguageCode . ']';
 330         $feed = new $wgFeedClasses[$feedFormat](
 331                 $feedTitle,
 332                 htmlspecialchars( wfMsgForContent( 'recentchanges-feed-description' ) ),
 333                 $wgTitle->getFullUrl() );
 334
 335         /**
 336          * Bumping around loading up diffs can be pretty slow, so where
 337          * possible we want to cache the feed output so the next visitor
 338          * gets it quick too.
 339          */
 340         $cachedFeed = false;
 341         if( ( $wgFeedCacheTimeout > 0 ) && ( $feedLastmod = $messageMemc->get( $timekey ) ) ) {
 342                 /**
 343                  * If the cached feed was rendered very recently, we may
 344                  * go ahead and use it even if there have been edits made
 345                  * since it was rendered. This keeps a swarm of requests
 346                  * from being too bad on a super-frequently edited wiki.
 347                  */
 348                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 349                                 < $wgFeedCacheTimeout
 350                         || wfTimestamp( TS_UNIX, $feedLastmod )
 351                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 352                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 353                         $cachedFeed = $messageMemc->get( $key );
 354                 } else {
 355                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 356                 }
 357         }
 358         if( is_string( $cachedFeed ) ) {
 359                 wfDebug( "RC: Outputting cached feed\n" );
 360                 $feed->httpHeaders();
 361                 echo $cachedFeed;
 362         } else {
 363                 wfDebug( "RC: rendering new feed and caching it\n" );
 364                 ob_start();
 365                 rcDoOutputFeed( $rows, $feed );
 366                 $cachedFeed = ob_get_contents();
 367                 ob_end_flush();
 368
 369                 $expire = 3600 * 24; # One day
 370                 $messageMemc->set( $key, $cachedFeed );
 371                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 372         }
 373         return true;
 374 }
 375
 376 function rcDoOutputFeed( $rows, &$feed ) {
 377         $fname = 'rcDoOutputFeed';
 378         wfProfileIn( $fname );
 379
 380         $feed->outHeader();
 381
 382         # Merge adjacent edits by one user
 383         $sorted = array();
 384         $n = 0;
 385         foreach( $rows as $obj ) {
 386                 if( $n > 0 &&
 387                         $obj->rc_namespace >= 0 &&
 388                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 389                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 390                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 391                 } else {
 392                         $sorted[$n] = $obj;
 393                         $n++;
 394                 }
 395         }
 396
 397         foreach( $sorted as $obj ) {
 398                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 399                 $talkpage = $title->getTalkPage();
 400                 $item = new FeedItem(
 401                         $title->getPrefixedText(),
 402                         rcFormatDiff( $obj ),
 403                         $title->getFullURL(),
 404                         $obj->rc_timestamp,
 405                         $obj->rc_user_text,
 406                         $talkpage->getFullURL()
 407                         );
 408                 $feed->outItem( $item );
 409         }
 410         $feed->outFooter();
 411         wfProfileOut( $fname );
 412 }
 413
 414 /**
 415  *
 416  */
 417 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 418         global $wgUser, $wgLang, $wgContLang;
 419         $sk = $wgUser->getSkin();
 420         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 421           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 422           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 423         return $s;
 424 }
 425
 426 /**
 427  *
 428  */
 429 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 430         global $wgUser, $wgLang, $wgContLang;
 431         $sk = $wgUser->getSkin();
 432         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 433           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 434           ($lim ? '&limit='.$lim : '') );
 435         return $s;
 436 }
 437
 438 /**
 439  * Used by Recentchangeslinked
 440  */
 441 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 442         $botLink = '', $liuLink = '', $patrLink = '', $myselfLink = '' ) {
 443         if ($more != '') $more .= '&';
 444         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 445           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 446           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 447           rcCountLink( 500, $days, $page, $more  ) .
 448           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 449         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 450           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 451           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 452           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 453           rcDaysLink( $limit, 30, $page, $more  ) .
 454           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 455
 456         $linkParts = array( 'minorLink' => 'minor', 'botLink' => 'bots', 'liuLink' => 'liu', 'patrLink' => 'patr', 'myselfLink' => 'mine' );
 457         foreach( $linkParts as $linkVar => $linkMsg ) {
 458                 if( $$linkVar != '' )
 459                         $links[] = wfMsgHtml( 'rcshowhide' . $linkMsg, $$linkVar );
 460         }
 461
 462         $shm = implode( ' | ', $links );
 463         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 464         return $note;
 465 }
 466
 467
 468 /**
 469  * Makes change an option link which carries all the other options
 470  * @param $title see Title
 471  * @param $override
 472  * @param $options
 473  */
 474 function makeOptionsLink( $title, $override, $options ) {
 475         global $wgUser, $wgContLang;
 476         $sk = $wgUser->getSkin();
 477         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 478                 htmlspecialchars( $title ), wfArrayToCGI( $override, $options ) );
 479 }
 480
 481 /**
 482  * Creates the options panel.
 483  * @param $defaults
 484  * @param $nondefaults
 485  */
 486 function rcOptionsPanel( $defaults, $nondefaults ) {
 487         global $wgLang, $wgUseRCPatrol;
 488
 489         $options = $nondefaults + $defaults;
 490
 491         if( $options['from'] )
 492                 $note = wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 493                         $wgLang->formatNum( $options['limit'] ),
 494                         $wgLang->timeanddate( $options['from'], true ) );
 495         else
 496                 $note = wfMsgExt( 'rcnote', array( 'parseinline' ),
 497                         $wgLang->formatNum( $options['limit'] ),
 498                         $wgLang->formatNum( $options['days'] ),
 499                         $wgLang->timeAndDate( wfTimestampNow(), true ) );
 500
 501         // limit links
 502         $options_limit = array(50, 100, 250, 500);
 503         foreach( $options_limit as $value ) {
 504                 $cl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 505                         array( 'limit' => $value ), $nondefaults) ;
 506         }
 507         $cl = implode( ' | ', $cl);
 508
 509         // day links, reset 'from' to none
 510         $options_days = array(1, 3, 7, 14, 30);
 511         foreach( $options_days as $value ) {
 512                 $dl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 513                         array( 'days' => $value, 'from' => ''  ), $nondefaults) ;
 514         }
 515         $dl = implode( ' | ', $dl);
 516
 517
 518         // show/hide links
 519         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 520         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 521                 array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 522         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 523                 array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 524         $anonsLink = makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 525                 array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 526         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 527                 array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 528         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 529                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 530         $myselfLink = makeOptionsLink( $showhide[1-$options['hidemyself']],
 531                 array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 532
 533         $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 534         $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 535         $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 536         $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 537         if( $wgUseRCPatrol )
 538                 $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 539         $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 540         $hl = implode( ' | ', $links );
 541
 542         // show from this onward link
 543         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 544         $tl =  makeOptionsLink( $now, array( 'from' => wfTimestampNow()), $nondefaults );
 545
 546         $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter'),
 547                 $cl, $dl, $hl );
 548         $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter'), $tl );
 549         return "$note<br />$rclinks<br />$rclistfrom";
 550
 551 }
 552
 553 /**
 554  * Creates the choose namespace selection
 555  *
 556  * @private
 557  *
 558  * @param $namespace Mixed: the key of the currently selected namespace, empty string
 559  *              if there is none
 560  * @param $invert Bool: whether to invert the namespace selection
 561  * @param $nondefaults Array: an array of non default options to be remembered
 562  * @param $categories_any Bool: Default value for the checkbox
 563  *
 564  * @return string
 565  */
 566 function rcNamespaceForm( $namespace, $invert, $nondefaults, $categories_any ) {
 567         global $wgScript, $wgAllowCategorizedRecentChanges, $wgRequest;
 568         $t = SpecialPage::getTitleFor( 'Recentchanges' );
 569
 570         $namespaceselect = HTMLnamespaceselector($namespace, '');
 571         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . "\" />\n";
 572         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 573
 574         if ( $wgAllowCategorizedRecentChanges ) {
 575                 $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 576                 $cb_arr = array( 'type' => 'checkbox', 'name' => 'categories_any', 'value' => "1" ) ;
 577                 if ( $categories_any ) $cb_arr['checked'] = "checked" ;
 578                 $catbox = "<br />" ;
 579                 $catbox .= wfMsgExt('rc_categories', array('parseinline')) . " ";
 580                 $catbox .= wfElement('input', array( 'type' => 'text', 'name' => 'categories', 'value' => $categories));
 581                 $catbox .= " &nbsp;" ;
 582                 $catbox .= wfElement('input', $cb_arr );
 583                 $catbox .= wfMsgExt('rc_categories_any', array('parseinline'));
 584         } else {
 585                 $catbox = "" ;
 586         }
 587
 588         $out = "<div class='namespacesettings'><form method='get' action='{$wgScript}'>\n";
 589
 590         foreach ( $nondefaults as $key => $value ) {
 591                 if ($key != 'namespace' && $key != 'invert')
 592                         $out .= wfElement('input', array( 'type' => 'hidden', 'name' => $key, 'value' => $value));
 593         }
 594
 595         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 596         $out .= "
 597 <div id='nsselect' class='recentchanges'>
 598         <label for='namespace'>" . wfMsgHtml('namespace') . "</label>
 599         {$namespaceselect}{$submitbutton}{$invertbox} <label for='nsinvert'>" . wfMsgHtml('invert') . "</label>{$catbox}\n</div>";
 600         $out .= '</form></div>';
 601         return $out;
 602 }
 603
 604
 605 /**
 606  * Format a diff for the newsfeed
 607  */
 608 function rcFormatDiff( $row ) {
 609         $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 610         $timestamp = wfTimestamp( TS_MW, $row->rc_timestamp );
 611         return rcFormatDiffRow( $titleObj,
 612                 $row->rc_last_oldid, $row->rc_this_oldid,
 613                 $timestamp,
 614                 $row->rc_comment );
 615 }
 616
 617 function rcFormatDiffRow( $title, $oldid, $newid, $timestamp, $comment ) {
 618         global $wgFeedDiffCutoff, $wgContLang, $wgUser;
 619         $fname = 'rcFormatDiff';
 620         wfProfileIn( $fname );
 621
 622         $skin = $wgUser->getSkin();
 623         $completeText = '<p>' . $skin->formatComment( $comment ) . "</p>\n";
 624
 625         if( $title->getNamespace() >= 0 && $title->userCan( 'read' ) ) {
 626                 if( $oldid ) {
 627                         wfProfileIn( "$fname-dodiff" );
 628
 629                         $de = new DifferenceEngine( $title, $oldid, $newid );
 630                         #$diffText = $de->getDiff( wfMsg( 'revisionasof',
 631                         #       $wgContLang->timeanddate( $timestamp ) ),
 632                         #       wfMsg( 'currentrev' ) );
 633                         $diffText = $de->getDiff(
 634                                 wfMsg( 'previousrevision' ), // hack
 635                                 wfMsg( 'revisionasof',
 636                                         $wgContLang->timeanddate( $timestamp ) ) );
 637
 638
 639                         if ( strlen( $diffText ) > $wgFeedDiffCutoff ) {
 640                                 // Omit large diffs
 641                                 $diffLink = $title->escapeFullUrl(
 642                                         'diff=' . $newid .
 643                                         '&oldid=' . $oldid );
 644                                 $diffText = '<a href="' .
 645                                         $diffLink .
 646                                         '">' .
 647                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 648                                         '</a>';
 649                         } elseif ( $diffText === false ) {
 650                                 // Error in diff engine, probably a missing revision
 651                                 $diffText = "<p>Can't load revision $newid</p>";
 652                         } else {
 653                                 // Diff output fine, clean up any illegal UTF-8
 654                                 $diffText = UtfNormal::cleanUp( $diffText );
 655                                 $diffText = rcApplyDiffStyle( $diffText );
 656                         }
 657                         wfProfileOut( "$fname-dodiff" );
 658                 } else {
 659                         $rev = Revision::newFromId( $newid );
 660                         if( is_null( $rev ) ) {
 661                                 $newtext = '';
 662                         } else {
 663                                 $newtext = $rev->getText();
 664                         }
 665                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 666                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 667                 }
 668                 $completeText .= $diffText;
 669         }
 670
 671         wfProfileOut( $fname );
 672         return $completeText;
 673 }
 674
 675 /**
 676  * Hacky application of diff styles for the feeds.
 677  * Might be 'cleaner' to use DOM or XSLT or something,
 678  * but *gack* it's a pain in the ass.
 679  *
 680  * @param $text String:
 681  * @return string
 682  * @private
 683  */
 684 function rcApplyDiffStyle( $text ) {
 685         $styles = array(
 686                 'diff'             => 'background-color: white; color:black;',
 687                 'diff-otitle'      => 'background-color: white; color:black;',
 688                 'diff-ntitle'      => 'background-color: white; color:black;',
 689                 'diff-addedline'   => 'background: #cfc; color:black; font-size: smaller;',
 690                 'diff-deletedline' => 'background: #ffa; color:black; font-size: smaller;',
 691                 'diff-context'     => 'background: #eee; color:black; font-size: smaller;',
 692                 'diffchange'       => 'color: red; font-weight: bold; text-decoration: none;',
 693         );
 694
 695         foreach( $styles as $class => $style ) {
 696                 $text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
 697                         "\\1style=\"$style\"\\3", $text );
 698         }
 699
 700         return $text;
 701 }
 702
 703