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 and talk links
 176                         $batch->add( NS_USER, $row->rc_user_text  );
 177                         $batch->add( NS_USER_TALK, $row->rc_user_text  );
 178                 }
 179
 180         }
 181         $dbr->freeResult( $res );
 182
 183         if( $feedFormat ) {
 184                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 185         } else {
 186
 187                 # Web output...
 188
 189                 // Run existence checks
 190                 $batch->execute();
 191                 $any = $wgRequest->getBool( 'categories_any', $defaults['categories_any']);
 192
 193                 // Output header
 194                 if ( !$specialPage->including() ) {
 195                         $wgOut->addWikiText( wfMsgForContentNoTrans( "recentchangestext" ) );
 196
 197                         // Dump everything here
 198                         $nondefaults = array();
 199
 200                         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 201                         wfAppendToArrayIfNotDefault( 'limit', $limit , $defaults, $nondefaults);
 202                         wfAppendToArrayIfNotDefault( 'hideminor', $hideminor, $defaults, $nondefaults);
 203                         wfAppendToArrayIfNotDefault( 'hidebots', $hidebots, $defaults, $nondefaults);
 204                         wfAppendToArrayIfNotDefault( 'hideanons', $hideanons, $defaults, $nondefaults );
 205                         wfAppendToArrayIfNotDefault( 'hideliu', $hideliu, $defaults, $nondefaults);
 206                         wfAppendToArrayIfNotDefault( 'hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
 207                         wfAppendToArrayIfNotDefault( 'hidemyself', $hidemyself, $defaults, $nondefaults);
 208                         wfAppendToArrayIfNotDefault( 'from', $from, $defaults, $nondefaults);
 209                         wfAppendToArrayIfNotDefault( 'namespace', $namespace, $defaults, $nondefaults);
 210                         wfAppendToArrayIfNotDefault( 'invert', $invert, $defaults, $nondefaults);
 211                         wfAppendToArrayIfNotDefault( 'categories_any', $any, $defaults, $nondefaults);
 212
 213                         // Add end of the texts
 214                         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $defaults, $nondefaults ) . "\n" );
 215                         $wgOut->addHTML( rcNamespaceForm( $namespace, $invert, $nondefaults, $any ) . '</div>'."\n");
 216                 }
 217
 218                 // And now for the content
 219                 $wgOut->setSyndicated( true );
 220
 221                 $list = ChangesList::newFromUser( $wgUser );
 222
 223                 if ( $wgAllowCategorizedRecentChanges ) {
 224                         $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 225                         $categories = str_replace ( "|" , "\n" , $categories ) ;
 226                         $categories = explode ( "\n" , $categories ) ;
 227                         rcFilterByCategories ( $rows , $categories , $any ) ;
 228                 }
 229
 230                 $s = $list->beginRecentChangesList();
 231                 $counter = 1;
 232
 233                 $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
 234                 $watcherCache = array();
 235
 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                                 $rc->numberofWatchingusers = 0; // Default
 255                                 if ($showWatcherCount && $obj->rc_namespace >= 0) {
 256                                         if (!isset($watcherCache[$obj->rc_namespace][$obj->rc_title])) {
 257                                                 $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 258                                                         $dbr->selectField( 'watchlist',
 259                                                                 'COUNT(*)',
 260                                                                 array(
 261                                                                         'wl_namespace' => $obj->rc_namespace,
 262                                                                         'wl_title' => $obj->rc_title,
 263                                                                 ),
 264                                                                 __METHOD__ . '-watchers' );
 265                                         }
 266                                         $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 267                                 }
 268                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 269                                 --$limit;
 270                         }
 271                 }
 272                 $s .= $list->endRecentChangesList();
 273                 $wgOut->addHTML( $s );
 274         }
 275 }
 276
 277 function rcFilterByCategories ( &$rows , $categories , $any ) {
 278         if( empty( $categories ) ) {
 279                 return;
 280         }
 281
 282         # Filter categories
 283         $cats = array () ;
 284         foreach ( $categories AS $cat ) {
 285                 $cat = trim ( $cat ) ;
 286                 if ( $cat == "" ) continue ;
 287                 $cats[] = $cat ;
 288         }
 289
 290         # Filter articles
 291         $articles = array () ;
 292         $a2r = array () ;
 293         foreach ( $rows AS $k => $r ) {
 294                 $nt = Title::makeTitle( $r->rc_title , $r->rc_namespace );
 295                 $id = $nt->getArticleID() ;
 296                 if ( $id == 0 ) continue ; # Page might have been deleted...
 297                 if ( !in_array ( $id , $articles ) ) {
 298                         $articles[] = $id ;
 299                 }
 300                 if ( !isset ( $a2r[$id] ) ) {
 301                         $a2r[$id] = array() ;
 302                 }
 303                 $a2r[$id][] = $k ;
 304         }
 305
 306         # Shortcut?
 307         if ( count ( $articles ) == 0 OR count ( $cats ) == 0 )
 308                 return ;
 309
 310         # Look up
 311         $c = new Categoryfinder ;
 312         $c->seed ( $articles , $cats , $any ? "OR" : "AND" ) ;
 313         $match = $c->run () ;
 314
 315         # Filter
 316         $newrows = array () ;
 317         foreach ( $match AS $id ) {
 318                 foreach ( $a2r[$id] AS $rev ) {
 319                         $k = $rev ;
 320                         $newrows[$k] = $rows[$k] ;
 321                 }
 322         }
 323         $rows = $newrows ;
 324 }
 325
 326 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 327         global $messageMemc, $wgFeedCacheTimeout;
 328         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 329         global $wgFeed;
 330
 331         if ( !$wgFeed ) {
 332                 global $wgOut;
 333                 $wgOut->addWikiMsg( 'feed-unavailable' );
 334                 return;
 335         }
 336
 337         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 338                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 339                 return false;
 340         }
 341
 342         $timekey = wfMemcKey( 'rcfeed', $feedFormat, 'timestamp' );
 343         $key = wfMemcKey( 'rcfeed', $feedFormat, 'limit', $limit, 'minor', $hideminor );
 344
 345         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 346                 ' [' . $wgContLanguageCode . ']';
 347         $feed = new $wgFeedClasses[$feedFormat](
 348                 $feedTitle,
 349                 htmlspecialchars( wfMsgForContent( 'recentchanges-feed-description' ) ),
 350                 $wgTitle->getFullUrl() );
 351
 352         //purge cache if requested
 353         global $wgRequest, $wgUser;
 354         $purge = $wgRequest->getVal( 'action' ) == 'purge';
 355         if ( $purge && $wgUser->isAllowed('purge') ) {
 356                 $messageMemc->delete( $timekey );
 357                 $messageMemc->delete( $key );
 358         }
 359
 360         /**
 361          * Bumping around loading up diffs can be pretty slow, so where
 362          * possible we want to cache the feed output so the next visitor
 363          * gets it quick too.
 364          */
 365         $cachedFeed = false;
 366         if( ( $wgFeedCacheTimeout > 0 ) && ( $feedLastmod = $messageMemc->get( $timekey ) ) ) {
 367                 /**
 368                  * If the cached feed was rendered very recently, we may
 369                  * go ahead and use it even if there have been edits made
 370                  * since it was rendered. This keeps a swarm of requests
 371                  * from being too bad on a super-frequently edited wiki.
 372                  */
 373                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 374                                 < $wgFeedCacheTimeout
 375                         || wfTimestamp( TS_UNIX, $feedLastmod )
 376                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 377                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 378                         $cachedFeed = $messageMemc->get( $key );
 379                 } else {
 380                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 381                 }
 382         }
 383         if( is_string( $cachedFeed ) ) {
 384                 wfDebug( "RC: Outputting cached feed\n" );
 385                 $feed->httpHeaders();
 386                 echo $cachedFeed;
 387         } else {
 388                 wfDebug( "RC: rendering new feed and caching it\n" );
 389                 ob_start();
 390                 rcDoOutputFeed( $rows, $feed );
 391                 $cachedFeed = ob_get_contents();
 392                 ob_end_flush();
 393
 394                 $expire = 3600 * 24; # One day
 395                 $messageMemc->set( $key, $cachedFeed );
 396                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 397         }
 398         return true;
 399 }
 400
 401 /**
 402  * @todo document
 403  * @param $rows Database resource with recentchanges rows
 404  */
 405 function rcDoOutputFeed( $rows, &$feed ) {
 406         wfProfileIn( __METHOD__ );
 407
 408         $feed->outHeader();
 409
 410         # Merge adjacent edits by one user
 411         $sorted = array();
 412         $n = 0;
 413         foreach( $rows as $obj ) {
 414                 if( $n > 0 &&
 415                         $obj->rc_namespace >= 0 &&
 416                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 417                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 418                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 419                 } else {
 420                         $sorted[$n] = $obj;
 421                         $n++;
 422                 }
 423         }
 424
 425         foreach( $sorted as $obj ) {
 426                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 427                 $talkpage = $title->getTalkPage();
 428                 $item = new FeedItem(
 429                         $title->getPrefixedText(),
 430                         rcFormatDiff( $obj ),
 431                         $title->getFullURL( 'diff=' . $obj->rc_this_oldid . '&oldid=prev' ),
 432                         $obj->rc_timestamp,
 433                         ($obj->rc_deleted & Revision::DELETED_USER) ? wfMsgHtml('rev-deleted-user') : $obj->rc_user_text,
 434                         $talkpage->getFullURL()
 435                         );
 436                 $feed->outItem( $item );
 437         }
 438         $feed->outFooter();
 439         wfProfileOut( __METHOD__ );
 440 }
 441
 442 /**
 443  *
 444  */
 445 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 446         global $wgUser, $wgLang, $wgContLang;
 447         $sk = $wgUser->getSkin();
 448         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 449           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 450           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 451         return $s;
 452 }
 453
 454 /**
 455  *
 456  */
 457 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 458         global $wgUser, $wgLang, $wgContLang;
 459         $sk = $wgUser->getSkin();
 460         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 461           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 462           ($lim ? '&limit='.$lim : '') );
 463         return $s;
 464 }
 465
 466 /**
 467  * Used by Recentchangeslinked
 468  */
 469 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 470         $botLink = '', $liuLink = '', $patrLink = '', $myselfLink = '' ) {
 471         if ($more != '') $more .= '&';
 472         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 473           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 474           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 475           rcCountLink( 500, $days, $page, $more  ) .
 476           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 477         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 478           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 479           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 480           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 481           rcDaysLink( $limit, 30, $page, $more  ) .
 482           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 483
 484         $linkParts = array( 'minorLink' => 'minor', 'botLink' => 'bots', 'liuLink' => 'liu', 'patrLink' => 'patr', 'myselfLink' => 'mine' );
 485         foreach( $linkParts as $linkVar => $linkMsg ) {
 486                 if( $$linkVar != '' )
 487                         $links[] = wfMsgHtml( 'rcshowhide' . $linkMsg, $$linkVar );
 488         }
 489
 490         $shm = implode( ' | ', $links );
 491         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 492         return $note;
 493 }
 494
 495
 496 /**
 497  * Makes change an option link which carries all the other options
 498  * @param $title see Title
 499  * @param $override
 500  * @param $options
 501  */
 502 function makeOptionsLink( $title, $override, $options ) {
 503         global $wgUser, $wgContLang;
 504         $sk = $wgUser->getSkin();
 505         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 506                 htmlspecialchars( $title ), wfArrayToCGI( $override, $options ) );
 507 }
 508
 509 /**
 510  * Creates the options panel.
 511  * @param $defaults
 512  * @param $nondefaults
 513  */
 514 function rcOptionsPanel( $defaults, $nondefaults ) {
 515         global $wgLang, $wgUseRCPatrol;
 516
 517         $options = $nondefaults + $defaults;
 518
 519         if( $options['from'] )
 520                 $note = wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 521                         $wgLang->formatNum( $options['limit'] ),
 522                         $wgLang->timeanddate( $options['from'], true ) );
 523         else
 524                 $note = wfMsgExt( 'rcnote', array( 'parseinline' ),
 525                         $wgLang->formatNum( $options['limit'] ),
 526                         $wgLang->formatNum( $options['days'] ),
 527                         $wgLang->timeAndDate( wfTimestampNow(), true ) );
 528
 529         // limit links
 530         $options_limit = array(50, 100, 250, 500);
 531         foreach( $options_limit as $value ) {
 532                 $cl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 533                         array( 'limit' => $value ), $nondefaults) ;
 534         }
 535         $cl = implode( ' | ', $cl);
 536
 537         // day links, reset 'from' to none
 538         $options_days = array(1, 3, 7, 14, 30);
 539         foreach( $options_days as $value ) {
 540                 $dl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 541                         array( 'days' => $value, 'from' => ''  ), $nondefaults) ;
 542         }
 543         $dl = implode( ' | ', $dl);
 544
 545
 546         // show/hide links
 547         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 548         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 549                 array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 550         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 551                 array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 552         $anonsLink = makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 553                 array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 554         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 555                 array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 556         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 557                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 558         $myselfLink = makeOptionsLink( $showhide[1-$options['hidemyself']],
 559                 array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 560
 561         $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 562         $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 563         $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 564         $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 565         if( $wgUseRCPatrol )
 566                 $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 567         $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 568         $hl = implode( ' | ', $links );
 569
 570         // show from this onward link
 571         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 572         $tl =  makeOptionsLink( $now, array( 'from' => wfTimestampNow()), $nondefaults );
 573
 574         $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter'),
 575                 $cl, $dl, $hl );
 576         $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter'), $tl );
 577         return "$note<br />$rclinks<br />$rclistfrom";
 578
 579 }
 580
 581 /**
 582  * Creates the choose namespace selection
 583  *
 584  * @private
 585  *
 586  * @param $namespace Mixed: the key of the currently selected namespace, empty string
 587  *              if there is none
 588  * @param $invert Bool: whether to invert the namespace selection
 589  * @param $nondefaults Array: an array of non default options to be remembered
 590  * @param $categories_any Bool: Default value for the checkbox
 591  *
 592  * @return string
 593  */
 594 function rcNamespaceForm( $namespace, $invert, $nondefaults, $categories_any ) {
 595         global $wgScript, $wgAllowCategorizedRecentChanges, $wgRequest;
 596         $t = SpecialPage::getTitleFor( 'Recentchanges' );
 597
 598         $namespaceselect = HTMLnamespaceselector($namespace, '');
 599         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . "\" />\n";
 600         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 601
 602         if ( $wgAllowCategorizedRecentChanges ) {
 603                 $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 604                 $cb_arr = array( 'type' => 'checkbox', 'name' => 'categories_any', 'value' => "1" ) ;
 605                 if ( $categories_any ) $cb_arr['checked'] = "checked" ;
 606                 $catbox = "<br />" ;
 607                 $catbox .= wfMsgExt('rc_categories', array('parseinline')) . " ";
 608                 $catbox .= wfElement('input', array( 'type' => 'text', 'name' => 'categories', 'value' => $categories));
 609                 $catbox .= " &nbsp;" ;
 610                 $catbox .= wfElement('input', $cb_arr );
 611                 $catbox .= wfMsgExt('rc_categories_any', array('parseinline'));
 612         } else {
 613                 $catbox = "" ;
 614         }
 615
 616         $out = "<div class='namespacesettings'><form method='get' action='{$wgScript}'>\n";
 617
 618         foreach ( $nondefaults as $key => $value ) {
 619                 if ($key != 'namespace' && $key != 'invert')
 620                         $out .= wfElement('input', array( 'type' => 'hidden', 'name' => $key, 'value' => $value));
 621         }
 622
 623         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 624         $out .= "
 625 <div id='nsselect' class='recentchanges'>
 626         <label for='namespace'>" . wfMsgHtml('namespace') . "</label>
 627         {$namespaceselect}{$submitbutton}{$invertbox} <label for='nsinvert'>" . wfMsgHtml('invert') . "</label>{$catbox}\n</div>";
 628         $out .= '</form></div>';
 629         return $out;
 630 }
 631
 632
 633 /**
 634  * Format a diff for the newsfeed
 635  */
 636 function rcFormatDiff( $row ) {
 637         global $wgUser;
 638
 639         $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 640         $timestamp = wfTimestamp( TS_MW, $row->rc_timestamp );
 641         $actiontext = '';
 642         if( $row->rc_type == RC_LOG ) {
 643                 if( $row->rc_deleted & LogPage::DELETED_ACTION ) {
 644                         $actiontext = wfMsgHtml('rev-deleted-event');
 645                 } else {
 646                         $actiontext = LogPage::actionText( $row->rc_log_type, $row->rc_log_action,
 647                                 $titleObj, $wgUser->getSkin(), LogPage::extractParams($row->rc_params,true,true) );
 648                 }
 649         }
 650         return rcFormatDiffRow( $titleObj,
 651                 $row->rc_last_oldid, $row->rc_this_oldid,
 652                 $timestamp,
 653                 ($row->rc_deleted & Revision::DELETED_COMMENT) ? wfMsgHtml('rev-deleted-comment') : $row->rc_comment,
 654                 $actiontext );
 655 }
 656
 657 function rcFormatDiffRow( $title, $oldid, $newid, $timestamp, $comment, $actiontext='' ) {
 658         global $wgFeedDiffCutoff, $wgContLang, $wgUser;
 659         $fname = 'rcFormatDiff';
 660         wfProfileIn( $fname );
 661
 662         $skin = $wgUser->getSkin();
 663         # log enties
 664         if( $actiontext ) {
 665                 $comment = "$actiontext $comment";
 666         }
 667         $completeText = '<p>' . $skin->formatComment( $comment ) . "</p>\n";
 668
 669         //NOTE: Check permissions for anonymous users, not current user.
 670         //      No "privileged" version should end up in the cache.
 671         //      Most feed readers will not log in anway.
 672         $anon = new User();
 673         $accErrors = $title->getUserPermissionsErrors( 'read', $anon, true );
 674
 675         if( $title->getNamespace() >= 0 && !$accErrors ) {
 676                 if( $oldid ) {
 677                         wfProfileIn( "$fname-dodiff" );
 678
 679                         $de = new DifferenceEngine( $title, $oldid, $newid );
 680                         #$diffText = $de->getDiff( wfMsg( 'revisionasof',
 681                         #       $wgContLang->timeanddate( $timestamp ) ),
 682                         #       wfMsg( 'currentrev' ) );
 683                         $diffText = $de->getDiff(
 684                                 wfMsg( 'previousrevision' ), // hack
 685                                 wfMsg( 'revisionasof',
 686                                         $wgContLang->timeanddate( $timestamp ) ) );
 687
 688
 689                         if ( strlen( $diffText ) > $wgFeedDiffCutoff ) {
 690                                 // Omit large diffs
 691                                 $diffLink = $title->escapeFullUrl(
 692                                         'diff=' . $newid .
 693                                         '&oldid=' . $oldid );
 694                                 $diffText = '<a href="' .
 695                                         $diffLink .
 696                                         '">' .
 697                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 698                                         '</a>';
 699                         } elseif ( $diffText === false ) {
 700                                 // Error in diff engine, probably a missing revision
 701                                 $diffText = "<p>Can't load revision $newid</p>";
 702                         } else {
 703                                 // Diff output fine, clean up any illegal UTF-8
 704                                 $diffText = UtfNormal::cleanUp( $diffText );
 705                                 $diffText = rcApplyDiffStyle( $diffText );
 706                         }
 707                         wfProfileOut( "$fname-dodiff" );
 708                 } else {
 709                         $rev = Revision::newFromId( $newid );
 710                         if( is_null( $rev ) ) {
 711                                 $newtext = '';
 712                         } else {
 713                                 $newtext = $rev->getText();
 714                         }
 715                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 716                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 717                 }
 718                 $completeText .= $diffText;
 719         }
 720
 721         wfProfileOut( $fname );
 722         return $completeText;
 723 }
 724
 725 /**
 726  * Hacky application of diff styles for the feeds.
 727  * Might be 'cleaner' to use DOM or XSLT or something,
 728  * but *gack* it's a pain in the ass.
 729  *
 730  * @param $text String:
 731  * @return string
 732  * @private
 733  */
 734 function rcApplyDiffStyle( $text ) {
 735         $styles = array(
 736                 'diff'             => 'background-color: white; color:black;',
 737                 'diff-otitle'      => 'background-color: white; color:black;',
 738                 'diff-ntitle'      => 'background-color: white; color:black;',
 739                 'diff-addedline'   => 'background: #cfc; color:black; font-size: smaller;',
 740                 'diff-deletedline' => 'background: #ffa; color:black; font-size: smaller;',
 741                 'diff-context'     => 'background: #eee; color:black; font-size: smaller;',
 742                 'diffchange'       => 'color: red; font-weight: bold; text-decoration: none;',
 743         );
 744
 745         foreach( $styles as $class => $style ) {
 746                 $text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
 747                         "\\1style=\"$style\"\\3", $text );
 748         }
 749
 750         return $text;
 751 }
 752
 753