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         $forcebot = false;
 136         if( $hideanons && $hideliu ){
 137                 # Check if the user wants to show bots only
 138                 if( $hidebots ){
 139                         $hideanons = 0;
 140                 } else {
 141                         $forcebot = true;
 142                         $hidebots = 0;
 143                 }
 144         }
 145
 146         # Form WHERE fragments for all the options
 147         $hidem  = $hideminor ? 'AND rc_minor = 0' : '';
 148         $hidem .= $hidebots ? ' AND rc_bot = 0' : '';
 149         $hidem .= $hideliu && !$forcebot ? ' AND rc_user = 0' : '';
 150         $hidem .= ($wgUser->useRCPatrol() && $hidepatrolled ) ? ' AND rc_patrolled = 0' : '';
 151         $hidem .= $hideanons && !$forcebot ? ' AND rc_user != 0' : '';
 152         $hidem .= $forcebot ? ' AND rc_bot = 1' : '';
 153
 154         if( $hidemyself ) {
 155                 if( $wgUser->getID() ) {
 156                         $hidem .= ' AND rc_user != ' . $wgUser->getID();
 157                 } else {
 158                         $hidem .= ' AND rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 159                 }
 160         }
 161
 162         # Namespace filtering
 163         $hidem .= is_null( $namespace ) ?  '' : ' AND rc_namespace' . ($invert ? '!=' : '=') . $namespace;
 164
 165         // This is the big thing!
 166
 167         $uid = $wgUser->getID();
 168
 169         // Perform query
 170         $forceclause = $dbr->useIndexClause("rc_timestamp");
 171         $sql2 = "SELECT * FROM $recentchanges $forceclause".
 172           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
 173           "WHERE rc_timestamp >= '{$cutoff}' {$hidem} " .
 174           "ORDER BY rc_timestamp DESC";
 175         $sql2 = $dbr->limitResult($sql2, $limit, 0);
 176         $res = $dbr->query( $sql2, $fname );
 177
 178         // Fetch results, prepare a batch link existence check query
 179         $rows = array();
 180         $batch = new LinkBatch;
 181         while( $row = $dbr->fetchObject( $res ) ){
 182                 $rows[] = $row;
 183                 if ( !$feedFormat ) {
 184                         // User page and talk links
 185                         $batch->add( NS_USER, $row->rc_user_text  );
 186                         $batch->add( NS_USER_TALK, $row->rc_user_text  );
 187                 }
 188
 189         }
 190         $dbr->freeResult( $res );
 191
 192         if( $feedFormat ) {
 193                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 194         } else {
 195
 196                 # Web output...
 197
 198                 // Run existence checks
 199                 $batch->execute();
 200                 $any = $wgRequest->getBool( 'categories_any', $defaults['categories_any']);
 201
 202                 // Output header
 203                 if ( !$specialPage->including() ) {
 204                         $wgOut->addWikiText( wfMsgForContentNoTrans( "recentchangestext" ) );
 205
 206                         // Dump everything here
 207                         $nondefaults = array();
 208
 209                         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 210                         wfAppendToArrayIfNotDefault( 'limit', $limit , $defaults, $nondefaults);
 211                         wfAppendToArrayIfNotDefault( 'hideminor', $hideminor, $defaults, $nondefaults);
 212                         wfAppendToArrayIfNotDefault( 'hidebots', $hidebots, $defaults, $nondefaults);
 213                         wfAppendToArrayIfNotDefault( 'hideanons', $hideanons, $defaults, $nondefaults );
 214                         wfAppendToArrayIfNotDefault( 'hideliu', $hideliu, $defaults, $nondefaults);
 215                         wfAppendToArrayIfNotDefault( 'hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
 216                         wfAppendToArrayIfNotDefault( 'hidemyself', $hidemyself, $defaults, $nondefaults);
 217                         wfAppendToArrayIfNotDefault( 'from', $from, $defaults, $nondefaults);
 218                         wfAppendToArrayIfNotDefault( 'namespace', $namespace, $defaults, $nondefaults);
 219                         wfAppendToArrayIfNotDefault( 'invert', $invert, $defaults, $nondefaults);
 220                         wfAppendToArrayIfNotDefault( 'categories_any', $any, $defaults, $nondefaults);
 221
 222                         // Add end of the texts
 223                         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $defaults, $nondefaults ) . "\n" );
 224                         $wgOut->addHTML( rcNamespaceForm( $namespace, $invert, $nondefaults, $any ) . '</div>'."\n");
 225                 }
 226
 227                 // And now for the content
 228                 $wgOut->setSyndicated( true );
 229
 230                 $list = ChangesList::newFromUser( $wgUser );
 231
 232                 if ( $wgAllowCategorizedRecentChanges ) {
 233                         $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 234                         $categories = str_replace ( "|" , "\n" , $categories ) ;
 235                         $categories = explode ( "\n" , $categories ) ;
 236                         rcFilterByCategories ( $rows , $categories , $any ) ;
 237                 }
 238
 239                 $s = $list->beginRecentChangesList();
 240                 $counter = 1;
 241
 242                 $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
 243                 $watcherCache = array();
 244
 245                 foreach( $rows as $obj ){
 246                         if( $limit == 0) {
 247                                 break;
 248                         }
 249
 250                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 251                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 252                                 $rc = RecentChange::newFromRow( $obj );
 253                                 $rc->counter = $counter++;
 254
 255                                 if ($wgShowUpdatedMarker
 256                                         && !empty( $obj->wl_notificationtimestamp )
 257                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 258                                                 $rc->notificationtimestamp = true;
 259                                 } else {
 260                                         $rc->notificationtimestamp = false;
 261                                 }
 262
 263                                 $rc->numberofWatchingusers = 0; // Default
 264                                 if ($showWatcherCount && $obj->rc_namespace >= 0) {
 265                                         if (!isset($watcherCache[$obj->rc_namespace][$obj->rc_title])) {
 266                                                 $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 267                                                         $dbr->selectField( 'watchlist',
 268                                                                 'COUNT(*)',
 269                                                                 array(
 270                                                                         'wl_namespace' => $obj->rc_namespace,
 271                                                                         'wl_title' => $obj->rc_title,
 272                                                                 ),
 273                                                                 __METHOD__ . '-watchers' );
 274                                         }
 275                                         $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 276                                 }
 277                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 278                                 --$limit;
 279                         }
 280                 }
 281                 $s .= $list->endRecentChangesList();
 282                 $wgOut->addHTML( $s );
 283         }
 284 }
 285
 286 function rcFilterByCategories ( &$rows , $categories , $any ) {
 287         if( empty( $categories ) ) {
 288                 return;
 289         }
 290
 291         # Filter categories
 292         $cats = array () ;
 293         foreach ( $categories AS $cat ) {
 294                 $cat = trim ( $cat ) ;
 295                 if ( $cat == "" ) continue ;
 296                 $cats[] = $cat ;
 297         }
 298
 299         # Filter articles
 300         $articles = array () ;
 301         $a2r = array () ;
 302         foreach ( $rows AS $k => $r ) {
 303                 $nt = Title::makeTitle( $r->rc_title , $r->rc_namespace );
 304                 $id = $nt->getArticleID() ;
 305                 if ( $id == 0 ) continue ; # Page might have been deleted...
 306                 if ( !in_array ( $id , $articles ) ) {
 307                         $articles[] = $id ;
 308                 }
 309                 if ( !isset ( $a2r[$id] ) ) {
 310                         $a2r[$id] = array() ;
 311                 }
 312                 $a2r[$id][] = $k ;
 313         }
 314
 315         # Shortcut?
 316         if ( count ( $articles ) == 0 OR count ( $cats ) == 0 )
 317                 return ;
 318
 319         # Look up
 320         $c = new Categoryfinder ;
 321         $c->seed ( $articles , $cats , $any ? "OR" : "AND" ) ;
 322         $match = $c->run () ;
 323
 324         # Filter
 325         $newrows = array () ;
 326         foreach ( $match AS $id ) {
 327                 foreach ( $a2r[$id] AS $rev ) {
 328                         $k = $rev ;
 329                         $newrows[$k] = $rows[$k] ;
 330                 }
 331         }
 332         $rows = $newrows ;
 333 }
 334
 335 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 336         global $messageMemc, $wgFeedCacheTimeout;
 337         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 338         global $wgFeed;
 339
 340         if ( !$wgFeed ) {
 341                 global $wgOut;
 342                 $wgOut->addWikiMsg( 'feed-unavailable' );
 343                 return;
 344         }
 345
 346         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 347                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 348                 return false;
 349         }
 350
 351         $timekey = wfMemcKey( 'rcfeed', $feedFormat, 'timestamp' );
 352         $key = wfMemcKey( 'rcfeed', $feedFormat, 'limit', $limit, 'minor', $hideminor );
 353
 354         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 355                 ' [' . $wgContLanguageCode . ']';
 356         $feed = new $wgFeedClasses[$feedFormat](
 357                 $feedTitle,
 358                 htmlspecialchars( wfMsgForContent( 'recentchanges-feed-description' ) ),
 359                 $wgTitle->getFullUrl() );
 360
 361         //purge cache if requested
 362         global $wgRequest, $wgUser;
 363         $purge = $wgRequest->getVal( 'action' ) == 'purge';
 364         if ( $purge && $wgUser->isAllowed('purge') ) {
 365                 $messageMemc->delete( $timekey );
 366                 $messageMemc->delete( $key );
 367         }
 368
 369         /**
 370          * Bumping around loading up diffs can be pretty slow, so where
 371          * possible we want to cache the feed output so the next visitor
 372          * gets it quick too.
 373          */
 374         $cachedFeed = false;
 375         if( ( $wgFeedCacheTimeout > 0 ) && ( $feedLastmod = $messageMemc->get( $timekey ) ) ) {
 376                 /**
 377                  * If the cached feed was rendered very recently, we may
 378                  * go ahead and use it even if there have been edits made
 379                  * since it was rendered. This keeps a swarm of requests
 380                  * from being too bad on a super-frequently edited wiki.
 381                  */
 382                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 383                                 < $wgFeedCacheTimeout
 384                         || wfTimestamp( TS_UNIX, $feedLastmod )
 385                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 386                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 387                         $cachedFeed = $messageMemc->get( $key );
 388                 } else {
 389                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 390                 }
 391         }
 392         if( is_string( $cachedFeed ) ) {
 393                 wfDebug( "RC: Outputting cached feed\n" );
 394                 $feed->httpHeaders();
 395                 echo $cachedFeed;
 396         } else {
 397                 wfDebug( "RC: rendering new feed and caching it\n" );
 398                 ob_start();
 399                 rcDoOutputFeed( $rows, $feed );
 400                 $cachedFeed = ob_get_contents();
 401                 ob_end_flush();
 402
 403                 $expire = 3600 * 24; # One day
 404                 $messageMemc->set( $key, $cachedFeed );
 405                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 406         }
 407         return true;
 408 }
 409
 410 /**
 411  * @todo document
 412  * @param $rows Database resource with recentchanges rows
 413  */
 414 function rcDoOutputFeed( $rows, &$feed ) {
 415         wfProfileIn( __METHOD__ );
 416
 417         $feed->outHeader();
 418
 419         # Merge adjacent edits by one user
 420         $sorted = array();
 421         $n = 0;
 422         foreach( $rows as $obj ) {
 423                 if( $n > 0 &&
 424                         $obj->rc_namespace >= 0 &&
 425                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 426                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 427                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 428                 } else {
 429                         $sorted[$n] = $obj;
 430                         $n++;
 431                 }
 432         }
 433
 434         foreach( $sorted as $obj ) {
 435                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 436                 $talkpage = $title->getTalkPage();
 437                 $item = new FeedItem(
 438                         $title->getPrefixedText(),
 439                         rcFormatDiff( $obj ),
 440                         $title->getFullURL( 'diff=' . $obj->rc_this_oldid . '&oldid=prev' ),
 441                         $obj->rc_timestamp,
 442                         ($obj->rc_deleted & Revision::DELETED_USER) ? wfMsgHtml('rev-deleted-user') : $obj->rc_user_text,
 443                         $talkpage->getFullURL()
 444                         );
 445                 $feed->outItem( $item );
 446         }
 447         $feed->outFooter();
 448         wfProfileOut( __METHOD__ );
 449 }
 450
 451 /**
 452  *
 453  */
 454 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 455         global $wgUser, $wgLang, $wgContLang;
 456         $sk = $wgUser->getSkin();
 457         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 458           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 459           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 460         return $s;
 461 }
 462
 463 /**
 464  *
 465  */
 466 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 467         global $wgUser, $wgLang, $wgContLang;
 468         $sk = $wgUser->getSkin();
 469         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 470           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 471           ($lim ? '&limit='.$lim : '') );
 472         return $s;
 473 }
 474
 475 /**
 476  * Used by Recentchangeslinked
 477  */
 478 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 479         $botLink = '', $liuLink = '', $patrLink = '', $myselfLink = '' ) {
 480         if ($more != '') $more .= '&';
 481         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 482           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 483           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 484           rcCountLink( 500, $days, $page, $more  ) .
 485           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 486         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 487           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 488           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 489           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 490           rcDaysLink( $limit, 30, $page, $more  ) .
 491           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 492
 493         $linkParts = array( 'minorLink' => 'minor', 'botLink' => 'bots', 'liuLink' => 'liu', 'patrLink' => 'patr', 'myselfLink' => 'mine' );
 494         foreach( $linkParts as $linkVar => $linkMsg ) {
 495                 if( $$linkVar != '' )
 496                         $links[] = wfMsgHtml( 'rcshowhide' . $linkMsg, $$linkVar );
 497         }
 498
 499         $shm = implode( ' | ', $links );
 500         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 501         return $note;
 502 }
 503
 504
 505 /**
 506  * Makes change an option link which carries all the other options
 507  * @param $title see Title
 508  * @param $override
 509  * @param $options
 510  */
 511 function makeOptionsLink( $title, $override, $options ) {
 512         global $wgUser, $wgContLang;
 513         $sk = $wgUser->getSkin();
 514         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 515                 htmlspecialchars( $title ), wfArrayToCGI( $override, $options ) );
 516 }
 517
 518 /**
 519  * Creates the options panel.
 520  * @param $defaults
 521  * @param $nondefaults
 522  */
 523 function rcOptionsPanel( $defaults, $nondefaults ) {
 524         global $wgLang, $wgUser;
 525
 526         $options = $nondefaults + $defaults;
 527
 528         if( $options['from'] )
 529                 $note = wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 530                         $wgLang->formatNum( $options['limit'] ),
 531                         $wgLang->timeanddate( $options['from'], true ) );
 532         else
 533                 $note = wfMsgExt( 'rcnote', array( 'parseinline' ),
 534                         $wgLang->formatNum( $options['limit'] ),
 535                         $wgLang->formatNum( $options['days'] ),
 536                         $wgLang->timeAndDate( wfTimestampNow(), true ) );
 537
 538         // limit links
 539         $options_limit = array(50, 100, 250, 500);
 540         foreach( $options_limit as $value ) {
 541                 $cl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 542                         array( 'limit' => $value ), $nondefaults) ;
 543         }
 544         $cl = implode( ' | ', $cl);
 545
 546         // day links, reset 'from' to none
 547         $options_days = array(1, 3, 7, 14, 30);
 548         foreach( $options_days as $value ) {
 549                 $dl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 550                         array( 'days' => $value, 'from' => ''  ), $nondefaults) ;
 551         }
 552         $dl = implode( ' | ', $dl);
 553
 554
 555         // show/hide links
 556         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 557         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 558                 array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 559         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 560                 array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 561         $anonsLink = makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 562                 array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 563         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 564                 array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 565         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 566                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 567         $myselfLink = makeOptionsLink( $showhide[1-$options['hidemyself']],
 568                 array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 569
 570         $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 571         $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 572         $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 573         $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 574         if( $wgUser->useRCPatrol() )
 575                 $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 576         $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 577         $hl = implode( ' | ', $links );
 578
 579         // show from this onward link
 580         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 581         $tl =  makeOptionsLink( $now, array( 'from' => wfTimestampNow()), $nondefaults );
 582
 583         $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter'),
 584                 $cl, $dl, $hl );
 585         $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter'), $tl );
 586         return "$note<br />$rclinks<br />$rclistfrom";
 587
 588 }
 589
 590 /**
 591  * Creates the choose namespace selection
 592  *
 593  * @private
 594  *
 595  * @param $namespace Mixed: the key of the currently selected namespace, empty string
 596  *              if there is none
 597  * @param $invert Bool: whether to invert the namespace selection
 598  * @param $nondefaults Array: an array of non default options to be remembered
 599  * @param $categories_any Bool: Default value for the checkbox
 600  *
 601  * @return string
 602  */
 603 function rcNamespaceForm( $namespace, $invert, $nondefaults, $categories_any ) {
 604         global $wgScript, $wgAllowCategorizedRecentChanges, $wgRequest;
 605         $t = SpecialPage::getTitleFor( 'Recentchanges' );
 606
 607         $namespaceselect = HTMLnamespaceselector($namespace, '');
 608         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . "\" />\n";
 609         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 610
 611         if ( $wgAllowCategorizedRecentChanges ) {
 612                 $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 613                 $cb_arr = array( 'type' => 'checkbox', 'name' => 'categories_any', 'value' => "1" ) ;
 614                 if ( $categories_any ) $cb_arr['checked'] = "checked" ;
 615                 $catbox = "<br />" ;
 616                 $catbox .= wfMsgExt('rc_categories', array('parseinline')) . " ";
 617                 $catbox .= wfElement('input', array( 'type' => 'text', 'name' => 'categories', 'value' => $categories));
 618                 $catbox .= " &nbsp;" ;
 619                 $catbox .= wfElement('input', $cb_arr );
 620                 $catbox .= wfMsgExt('rc_categories_any', array('parseinline'));
 621         } else {
 622                 $catbox = "" ;
 623         }
 624
 625         $out = "<div class='namespacesettings'><form method='get' action='{$wgScript}'>\n";
 626
 627         foreach ( $nondefaults as $key => $value ) {
 628                 if ($key != 'namespace' && $key != 'invert')
 629                         $out .= wfElement('input', array( 'type' => 'hidden', 'name' => $key, 'value' => $value));
 630         }
 631
 632         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 633         $out .= "
 634 <div id='nsselect' class='recentchanges'>
 635         <label for='namespace'>" . wfMsgHtml('namespace') . "</label>
 636         {$namespaceselect}{$submitbutton}{$invertbox} <label for='nsinvert'>" . wfMsgHtml('invert') . "</label>{$catbox}\n</div>";
 637         $out .= '</form></div>';
 638         return $out;
 639 }
 640
 641
 642 /**
 643  * Format a diff for the newsfeed
 644  */
 645 function rcFormatDiff( $row ) {
 646         global $wgUser;
 647
 648         $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 649         $timestamp = wfTimestamp( TS_MW, $row->rc_timestamp );
 650         $actiontext = '';
 651         if( $row->rc_type == RC_LOG ) {
 652                 if( $row->rc_deleted & LogPage::DELETED_ACTION ) {
 653                         $actiontext = wfMsgHtml('rev-deleted-event');
 654                 } else {
 655                         $actiontext = LogPage::actionText( $row->rc_log_type, $row->rc_log_action,
 656                                 $titleObj, $wgUser->getSkin(), LogPage::extractParams($row->rc_params,true,true) );
 657                 }
 658         }
 659         return rcFormatDiffRow( $titleObj,
 660                 $row->rc_last_oldid, $row->rc_this_oldid,
 661                 $timestamp,
 662                 ($row->rc_deleted & Revision::DELETED_COMMENT) ? wfMsgHtml('rev-deleted-comment') : $row->rc_comment,
 663                 $actiontext );
 664 }
 665
 666 function rcFormatDiffRow( $title, $oldid, $newid, $timestamp, $comment, $actiontext='' ) {
 667         global $wgFeedDiffCutoff, $wgContLang, $wgUser;
 668         $fname = 'rcFormatDiff';
 669         wfProfileIn( $fname );
 670
 671         $skin = $wgUser->getSkin();
 672         # log enties
 673         if( $actiontext ) {
 674                 $comment = "$actiontext $comment";
 675         }
 676         $completeText = '<p>' . $skin->formatComment( $comment ) . "</p>\n";
 677
 678         //NOTE: Check permissions for anonymous users, not current user.
 679         //      No "privileged" version should end up in the cache.
 680         //      Most feed readers will not log in anway.
 681         $anon = new User();
 682         $accErrors = $title->getUserPermissionsErrors( 'read', $anon, true );
 683
 684         if( $title->getNamespace() >= 0 && !$accErrors ) {
 685                 if( $oldid ) {
 686                         wfProfileIn( "$fname-dodiff" );
 687
 688                         $de = new DifferenceEngine( $title, $oldid, $newid );
 689                         #$diffText = $de->getDiff( wfMsg( 'revisionasof',
 690                         #       $wgContLang->timeanddate( $timestamp ) ),
 691                         #       wfMsg( 'currentrev' ) );
 692                         $diffText = $de->getDiff(
 693                                 wfMsg( 'previousrevision' ), // hack
 694                                 wfMsg( 'revisionasof',
 695                                         $wgContLang->timeanddate( $timestamp ) ) );
 696
 697
 698                         if ( strlen( $diffText ) > $wgFeedDiffCutoff ) {
 699                                 // Omit large diffs
 700                                 $diffLink = $title->escapeFullUrl(
 701                                         'diff=' . $newid .
 702                                         '&oldid=' . $oldid );
 703                                 $diffText = '<a href="' .
 704                                         $diffLink .
 705                                         '">' .
 706                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 707                                         '</a>';
 708                         } elseif ( $diffText === false ) {
 709                                 // Error in diff engine, probably a missing revision
 710                                 $diffText = "<p>Can't load revision $newid</p>";
 711                         } else {
 712                                 // Diff output fine, clean up any illegal UTF-8
 713                                 $diffText = UtfNormal::cleanUp( $diffText );
 714                                 $diffText = rcApplyDiffStyle( $diffText );
 715                         }
 716                         wfProfileOut( "$fname-dodiff" );
 717                 } else {
 718                         $rev = Revision::newFromId( $newid );
 719                         if( is_null( $rev ) ) {
 720                                 $newtext = '';
 721                         } else {
 722                                 $newtext = $rev->getText();
 723                         }
 724                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 725                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 726                 }
 727                 $completeText .= $diffText;
 728         }
 729
 730         wfProfileOut( $fname );
 731         return $completeText;
 732 }
 733
 734 /**
 735  * Hacky application of diff styles for the feeds.
 736  * Might be 'cleaner' to use DOM or XSLT or something,
 737  * but *gack* it's a pain in the ass.
 738  *
 739  * @param $text String:
 740  * @return string
 741  * @private
 742  */
 743 function rcApplyDiffStyle( $text ) {
 744         $styles = array(
 745                 'diff'             => 'background-color: white; color:black;',
 746                 'diff-otitle'      => 'background-color: white; color:black;',
 747                 'diff-ntitle'      => 'background-color: white; color:black;',
 748                 'diff-addedline'   => 'background: #cfc; color:black; font-size: smaller;',
 749                 'diff-deletedline' => 'background: #ffa; color:black; font-size: smaller;',
 750                 'diff-context'     => 'background: #eee; color:black; font-size: smaller;',
 751                 'diffchange'       => 'color: red; font-weight: bold; text-decoration: none;',
 752         );
 753
 754         foreach( $styles as $class => $style ) {
 755                 $text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
 756                         "\\1style=\"$style\"\\3", $text );
 757         }
 758
 759         return $text;
 760 }