includes/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'ChangesList.php' );
  12
  13 /**
  14  * Constructor
  15  */
  16 function wfSpecialRecentchanges( $par, $specialPage ) {
  17         global $wgUser, $wgOut, $wgRequest, $wgUseRCPatrol;
  18         global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
  19         global $wgAllowCategorizedRecentChanges ;
  20         $fname = 'wfSpecialRecentchanges';
  21
  22         # Get query parameters
  23         $feedFormat = $wgRequest->getVal( 'feed' );
  24
  25         /* Checkbox values can't be true be default, because
  26          * we cannot differentiate between unset and not set at all
  27          */
  28         $defaults = array(
  29         /* int  */ 'days' => $wgUser->getDefaultOption('rcdays'),
  30         /* int  */ 'limit' => $wgUser->getDefaultOption('rclimit'),
  31         /* bool */ 'hideminor' => false,
  32         /* bool */ 'hidebots' => true,
  33         /* bool */ 'hideanons' => false,
  34         /* bool */ 'hideliu' => false,
  35         /* bool */ 'hidepatrolled' => false,
  36         /* bool */ 'hidemyself' => false,
  37         /* text */ 'from' => '',
  38         /* text */ 'namespace' => null,
  39         /* bool */ 'invert' => false,
  40         /* bool */ 'categories_any' => false,
  41         );
  42
  43         extract($defaults);
  44
  45
  46         $days = $wgUser->getOption( 'rcdays', $defaults['days']);
  47         $days = $wgRequest->getInt( 'days', $days );
  48
  49         $limit = $wgUser->getOption( 'rclimit', $defaults['limit'] );
  50
  51         #       list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  52         $limit = $wgRequest->getInt( 'limit', $limit );
  53
  54         /* order of selection: url > preferences > default */
  55         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor') ? true : $defaults['hideminor'] );
  56
  57         # As a feed, use limited settings only
  58         if( $feedFormat ) {
  59                 global $wgFeedLimit;
  60                 if( $limit > $wgFeedLimit ) {
  61                         $options['limit'] = $wgFeedLimit;
  62                 }
  63
  64         } else {
  65
  66                 $namespace = $wgRequest->getIntOrNull( 'namespace' );
  67                 $invert = $wgRequest->getBool( 'invert', $defaults['invert'] );
  68                 $hidebots = $wgRequest->getBool( 'hidebots', $defaults['hidebots'] );
  69                 $hideanons = $wgRequest->getBool( 'hideanons', $defaults['hideanons'] );
  70                 $hideliu = $wgRequest->getBool( 'hideliu', $defaults['hideliu'] );
  71                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled', $defaults['hidepatrolled'] );
  72                 $hidemyself = $wgRequest->getBool ( 'hidemyself', $defaults['hidemyself'] );
  73                 $from = $wgRequest->getVal( 'from', $defaults['from'] );
  74
  75                 # Get query parameters from path
  76                 if( $par ) {
  77                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  78                         foreach ( $bits as $bit ) {
  79                                 if ( 'hidebots' == $bit ) $hidebots = 1;
  80                                 if ( 'bots' == $bit ) $hidebots = 0;
  81                                 if ( 'hideminor' == $bit ) $hideminor = 1;
  82                                 if ( 'minor' == $bit ) $hideminor = 0;
  83                                 if ( 'hideliu' == $bit ) $hideliu = 1;
  84                                 if ( 'hidepatrolled' == $bit ) $hidepatrolled = 1;
  85                                 if ( 'hideanons' == $bit ) $hideanons = 1;
  86                                 if ( 'hidemyself' == $bit ) $hidemyself = 1;
  87
  88                                 if ( is_numeric( $bit ) ) {
  89                                         $limit = $bit;
  90                                 }
  91
  92                                 $m = array();
  93                                 if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
  94                                         $limit = $m[1];
  95                                 }
  96
  97                                 if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
  98                                         $days = $m[1];
  99                                 }
 100                         }
 101                 }
 102         }
 103
 104         if ( $limit < 0 || $limit > 5000 ) $limit = $defaults['limit'];
 105
 106
 107         # Database connection and caching
 108         $dbr =& wfGetDB( DB_SLAVE );
 109         list( $recentchanges, $watchlist ) = $dbr->tableNamesN( 'recentchanges', 'watchlist' );
 110
 111
 112         $cutoff_unixtime = time() - ( $days * 86400 );
 113         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 114         $cutoff = $dbr->timestamp( $cutoff_unixtime );
 115         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
 116                 $cutoff = $dbr->timestamp($from);
 117         } else {
 118                 $from = $defaults['from'];
 119         }
 120
 121         # 10 seconds server-side caching max
 122         $wgOut->setSquidMaxage( 10 );
 123
 124         # Get last modified date, for client caching
 125         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
 126         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
 127         if ( $feedFormat || !$wgUseRCPatrol ) {
 128                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
 129                         # Client cache fresh and headers sent, nothing more to do.
 130                         return;
 131                 }
 132         }
 133
 134         # It makes no sense to hide both anons and logged-in users
 135         # Where this occurs, force anons to be shown
 136         if( $hideanons && $hideliu )
 137                 $hideanons = false;
 138
 139         # Form WHERE fragments for all the options
 140         $hidem  = $hideminor ? 'AND rc_minor = 0' : '';
 141         $hidem .= $hidebots ? ' AND rc_bot = 0' : '';
 142         $hidem .= $hideliu ? ' AND rc_user = 0' : '';
 143         $hidem .= ( $wgUseRCPatrol && $hidepatrolled ) ? ' AND rc_patrolled = 0' : '';
 144         $hidem .= $hideanons ? ' AND rc_user != 0' : '';
 145
 146         if( $hidemyself ) {
 147                 if( $wgUser->getID() ) {
 148                         $hidem .= ' AND rc_user != ' . $wgUser->getID();
 149                 } else {
 150                         $hidem .= ' AND rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 151                 }
 152         }
 153
 154         # Namespace filtering
 155         $hidem .= is_null( $namespace ) ?  '' : ' AND rc_namespace' . ($invert ? '!=' : '=') . $namespace;
 156
 157         // This is the big thing!
 158
 159         $uid = $wgUser->getID();
 160
 161         // Perform query
 162         $forceclause = $dbr->useIndexClause("rc_timestamp");
 163         $sql2 = "SELECT * FROM $recentchanges $forceclause".
 164           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
 165           "WHERE rc_timestamp >= '{$cutoff}' {$hidem} " .
 166           "ORDER BY rc_timestamp DESC";
 167         $sql2 = $dbr->limitResult($sql2, $limit, 0);
 168         $res = $dbr->query( $sql2, $fname );
 169
 170         // Fetch results, prepare a batch link existence check query
 171         $rows = array();
 172         $batch = new LinkBatch;
 173         while( $row = $dbr->fetchObject( $res ) ){
 174                 $rows[] = $row;
 175                 if ( !$feedFormat ) {
 176                         // User page link
 177                         $title = Title::makeTitleSafe( NS_USER, $row->rc_user_text );
 178                         $batch->addObj( $title );
 179
 180                         // User talk
 181                         $title = Title::makeTitleSafe( NS_USER_TALK, $row->rc_user_text );
 182                         $batch->addObj( $title );
 183                 }
 184
 185         }
 186         $dbr->freeResult( $res );
 187
 188         if( $feedFormat ) {
 189                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 190         } else {
 191
 192                 # Web output...
 193
 194                 // Run existence checks
 195                 $batch->execute();
 196                 $any = $wgRequest->getBool( 'categories_any', $defaults['categories_any']);
 197
 198                 // Output header
 199                 if ( !$specialPage->including() ) {
 200                         $wgOut->addWikiText( wfMsgForContentNoTrans( "recentchangestext" ) );
 201
 202                         // Dump everything here
 203                         $nondefaults = array();
 204
 205                         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 206                         wfAppendToArrayIfNotDefault( 'limit', $limit , $defaults, $nondefaults);
 207                         wfAppendToArrayIfNotDefault( 'hideminor', $hideminor, $defaults, $nondefaults);
 208                         wfAppendToArrayIfNotDefault( 'hidebots', $hidebots, $defaults, $nondefaults);
 209                         wfAppendToArrayIfNotDefault( 'hideanons', $hideanons, $defaults, $nondefaults );
 210                         wfAppendToArrayIfNotDefault( 'hideliu', $hideliu, $defaults, $nondefaults);
 211                         wfAppendToArrayIfNotDefault( 'hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
 212                         wfAppendToArrayIfNotDefault( 'hidemyself', $hidemyself, $defaults, $nondefaults);
 213                         wfAppendToArrayIfNotDefault( 'from', $from, $defaults, $nondefaults);
 214                         wfAppendToArrayIfNotDefault( 'namespace', $namespace, $defaults, $nondefaults);
 215                         wfAppendToArrayIfNotDefault( 'invert', $invert, $defaults, $nondefaults);
 216                         wfAppendToArrayIfNotDefault( 'categories_any', $any, $defaults, $nondefaults);
 217
 218                         // Add end of the texts
 219                         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $defaults, $nondefaults ) . "\n" );
 220                         $wgOut->addHTML( rcNamespaceForm( $namespace, $invert, $nondefaults, $any ) . '</div>'."\n");
 221                 }
 222
 223                 // And now for the content
 224                 $wgOut->setSyndicated( true );
 225
 226                 $list = ChangesList::newFromUser( $wgUser );
 227
 228                 if ( $wgAllowCategorizedRecentChanges ) {
 229                         $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 230                         $categories = str_replace ( "|" , "\n" , $categories ) ;
 231                         $categories = explode ( "\n" , $categories ) ;
 232                         rcFilterByCategories ( $rows , $categories , $any ) ;
 233                 }
 234
 235                 $s = $list->beginRecentChangesList();
 236                 $counter = 1;
 237                 foreach( $rows as $obj ){
 238                         if( $limit == 0) {
 239                                 break;
 240                         }
 241
 242                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 243                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 244                                 $rc = RecentChange::newFromRow( $obj );
 245                                 $rc->counter = $counter++;
 246
 247                                 if ($wgShowUpdatedMarker
 248                                         && !empty( $obj->wl_notificationtimestamp )
 249                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 250                                                 $rc->notificationtimestamp = true;
 251                                 } else {
 252                                         $rc->notificationtimestamp = false;
 253                                 }
 254
 255                                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 256                                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" . $dbr->strencode($obj->rc_title) ."' AND wl_namespace=$obj->rc_namespace" ;
 257                                         $res3 = $dbr->query( $sql3, 'wfSpecialRecentChanges');
 258                                         $x = $dbr->fetchObject( $res3 );
 259                                         $rc->numberofWatchingusers = $x->n;
 260                                 } else {
 261                                         $rc->numberofWatchingusers = 0;
 262                                 }
 263                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 264                                 --$limit;
 265                         }
 266                 }
 267                 $s .= $list->endRecentChangesList();
 268                 $wgOut->addHTML( $s );
 269         }
 270 }
 271
 272 function rcFilterByCategories ( &$rows , $categories , $any ) {
 273         require_once ( 'Categoryfinder.php' ) ;
 274
 275         # Filter categories
 276         $cats = array () ;
 277         foreach ( $categories AS $cat ) {
 278                 $cat = trim ( $cat ) ;
 279                 if ( $cat == "" ) continue ;
 280                 $cats[] = $cat ;
 281         }
 282
 283         # Filter articles
 284         $articles = array () ;
 285         $a2r = array () ;
 286         foreach ( $rows AS $k => $r ) {
 287                 $nt = Title::newFromText ( $r->rc_title , $r->rc_namespace ) ;
 288                 $id = $nt->getArticleID() ;
 289                 if ( $id == 0 ) continue ; # Page might have been deleted...
 290                 if ( !in_array ( $id , $articles ) ) {
 291                         $articles[] = $id ;
 292                 }
 293                 if ( !isset ( $a2r[$id] ) ) {
 294                         $a2r[$id] = array() ;
 295                 }
 296                 $a2r[$id][] = $k ;
 297         }
 298
 299         # Shortcut?
 300         if ( count ( $articles ) == 0 OR count ( $cats ) == 0 )
 301                 return ;
 302
 303         # Look up
 304         $c = new Categoryfinder ;
 305         $c->seed ( $articles , $cats , $any ? "OR" : "AND" ) ;
 306         $match = $c->run () ;
 307
 308         # Filter
 309         $newrows = array () ;
 310         foreach ( $match AS $id ) {
 311                 foreach ( $a2r[$id] AS $rev ) {
 312                         $k = $rev ;
 313                         $newrows[$k] = $rows[$k] ;
 314                 }
 315         }
 316         $rows = $newrows ;
 317 }
 318
 319 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 320         global $messageMemc, $wgFeedCacheTimeout;
 321         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 322
 323         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 324                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 325                 return false;
 326         }
 327
 328         $timekey = wfMemcKey( 'rcfeed', $feedFormat, 'timestamp' );
 329         $key = wfMemcKey( 'rcfeed', $feedFormat, 'limit', $limit, 'minor', $hideminor );
 330
 331         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 332                 ' [' . $wgContLanguageCode . ']';
 333         $feed = new $wgFeedClasses[$feedFormat](
 334                 $feedTitle,
 335                 htmlspecialchars( wfMsgForContent( 'recentchanges-feed-description' ) ),
 336                 $wgTitle->getFullUrl() );
 337
 338         /**
 339          * Bumping around loading up diffs can be pretty slow, so where
 340          * possible we want to cache the feed output so the next visitor
 341          * gets it quick too.
 342          */
 343         $cachedFeed = false;
 344         if( ( $wgFeedCacheTimeout > 0 ) && ( $feedLastmod = $messageMemc->get( $timekey ) ) ) {
 345                 /**
 346                  * If the cached feed was rendered very recently, we may
 347                  * go ahead and use it even if there have been edits made
 348                  * since it was rendered. This keeps a swarm of requests
 349                  * from being too bad on a super-frequently edited wiki.
 350                  */
 351                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 352                                 < $wgFeedCacheTimeout
 353                         || wfTimestamp( TS_UNIX, $feedLastmod )
 354                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 355                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 356                         $cachedFeed = $messageMemc->get( $key );
 357                 } else {
 358                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 359                 }
 360         }
 361         if( is_string( $cachedFeed ) ) {
 362                 wfDebug( "RC: Outputting cached feed\n" );
 363                 $feed->httpHeaders();
 364                 echo $cachedFeed;
 365         } else {
 366                 wfDebug( "RC: rendering new feed and caching it\n" );
 367                 ob_start();
 368                 rcDoOutputFeed( $rows, $feed );
 369                 $cachedFeed = ob_get_contents();
 370                 ob_end_flush();
 371
 372                 $expire = 3600 * 24; # One day
 373                 $messageMemc->set( $key, $cachedFeed );
 374                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 375         }
 376         return true;
 377 }
 378
 379 function rcDoOutputFeed( $rows, &$feed ) {
 380         $fname = 'rcDoOutputFeed';
 381         wfProfileIn( $fname );
 382
 383         $feed->outHeader();
 384
 385         # Merge adjacent edits by one user
 386         $sorted = array();
 387         $n = 0;
 388         foreach( $rows as $obj ) {
 389                 if( $n > 0 &&
 390                         $obj->rc_namespace >= 0 &&
 391                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 392                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 393                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 394                 } else {
 395                         $sorted[$n] = $obj;
 396                         $n++;
 397                 }
 398         }
 399
 400         foreach( $sorted as $obj ) {
 401                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 402                 $talkpage = $title->getTalkPage();
 403                 $item = new FeedItem(
 404                         $title->getPrefixedText(),
 405                         rcFormatDiff( $obj ),
 406                         $title->getFullURL(),
 407                         $obj->rc_timestamp,
 408                         $obj->rc_user_text,
 409                         $talkpage->getFullURL()
 410                         );
 411                 $feed->outItem( $item );
 412         }
 413         $feed->outFooter();
 414         wfProfileOut( $fname );
 415 }
 416
 417 /**
 418  *
 419  */
 420 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 421         global $wgUser, $wgLang, $wgContLang;
 422         $sk = $wgUser->getSkin();
 423         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 424           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 425           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 426         return $s;
 427 }
 428
 429 /**
 430  *
 431  */
 432 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 433         global $wgUser, $wgLang, $wgContLang;
 434         $sk = $wgUser->getSkin();
 435         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 436           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 437           ($lim ? '&limit='.$lim : '') );
 438         return $s;
 439 }
 440
 441 /**
 442  * Used by Recentchangeslinked
 443  */
 444 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 445         $botLink = '', $liuLink = '', $patrLink = '', $myselfLink = '' ) {
 446         if ($more != '') $more .= '&';
 447         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 448           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 449           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 450           rcCountLink( 500, $days, $page, $more  ) .
 451           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 452         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 453           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 454           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 455           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 456           rcDaysLink( $limit, 30, $page, $more  ) .
 457           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 458
 459         $linkParts = array( 'minorLink' => 'minor', 'botLink' => 'bots', 'liuLink' => 'liu', 'patrLink' => 'patr', 'myselfLink' => 'mine' );
 460         foreach( $linkParts as $linkVar => $linkMsg ) {
 461                 if( $$linkVar != '' )
 462                         $links[] = wfMsgHtml( 'rcshowhide' . $linkMsg, $$linkVar );
 463         }
 464
 465         $shm = implode( ' | ', $links );
 466         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 467         return $note;
 468 }
 469
 470
 471 /**
 472  * Makes change an option link which carries all the other options
 473  * @param $title @see Title
 474  * @param $override
 475  * @param $options
 476  */
 477 function makeOptionsLink( $title, $override, $options ) {
 478         global $wgUser, $wgContLang;
 479         $sk = $wgUser->getSkin();
 480         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 481                 htmlspecialchars( $title ), wfArrayToCGI( $override, $options ) );
 482 }
 483
 484 /**
 485  * Creates the options panel.
 486  * @param $defaults
 487  * @param $nondefaults
 488  */
 489 function rcOptionsPanel( $defaults, $nondefaults ) {
 490         global $wgLang, $wgUseRCPatrol;
 491
 492         $options = $nondefaults + $defaults;
 493
 494         if( $options['from'] )
 495                 $note = wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 496                         $wgLang->formatNum( $options['limit'] ),
 497                         $wgLang->timeanddate( $options['from'], true ) );
 498         else
 499                 $note = wfMsgExt( 'rcnote', array( 'parseinline' ),
 500                         $wgLang->formatNum( $options['limit'] ),
 501                         $wgLang->formatNum( $options['days'] ),
 502                         $wgLang->timeAndDate( wfTimestampNow(), true ) );
 503
 504         // limit links
 505         $options_limit = array(50, 100, 250, 500);
 506         foreach( $options_limit as $value ) {
 507                 $cl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 508                         array( 'limit' => $value ), $nondefaults) ;
 509         }
 510         $cl = implode( ' | ', $cl);
 511
 512         // day links, reset 'from' to none
 513         $options_days = array(1, 3, 7, 14, 30);
 514         foreach( $options_days as $value ) {
 515                 $dl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 516                         array( 'days' => $value, 'from' => ''  ), $nondefaults) ;
 517         }
 518         $dl = implode( ' | ', $dl);
 519
 520
 521         // show/hide links
 522         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 523         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 524                 array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 525         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 526                 array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 527         $anonsLink = makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 528                 array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 529         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 530                 array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 531         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 532                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 533         $myselfLink = makeOptionsLink( $showhide[1-$options['hidemyself']],
 534                 array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 535
 536         $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 537         $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 538         $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 539         $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 540         if( $wgUseRCPatrol )
 541                 $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 542         $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 543         $hl = implode( ' | ', $links );
 544
 545         // show from this onward link
 546         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 547         $tl =  makeOptionsLink( $now, array( 'from' => wfTimestampNow()), $nondefaults );
 548
 549         $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter'),
 550                 $cl, $dl, $hl );
 551         $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter'), $tl );
 552         return "$note<br />$rclinks<br />$rclistfrom";
 553
 554 }
 555
 556 /**
 557  * Creates the choose namespace selection
 558  *
 559  * @private
 560  *
 561  * @param $namespace Mixed: the key of the currently selected namespace, empty string
 562  *              if there is none
 563  * @param $invert Bool: whether to invert the namespace selection
 564  * @param $nondefaults Array: an array of non default options to be remembered
 565  * @param $categories_any Bool: Default value for the checkbox
 566  *
 567  * @return string
 568  */
 569 function rcNamespaceForm( $namespace, $invert, $nondefaults, $categories_any ) {
 570         global $wgScript, $wgAllowCategorizedRecentChanges, $wgRequest;
 571         $t = SpecialPage::getTitleFor( 'Recentchanges' );
 572
 573         $namespaceselect = HTMLnamespaceselector($namespace, '');
 574         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . "\" />\n";
 575         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 576
 577         if ( $wgAllowCategorizedRecentChanges ) {
 578                 $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 579                 $cb_arr = array( 'type' => 'checkbox', 'name' => 'categories_any', 'value' => "1" ) ;
 580                 if ( $categories_any ) $cb_arr['checked'] = "checked" ;
 581                 $catbox = "<br />" ;
 582                 $catbox .= wfMsgExt('rc_categories', array('parseinline')) . " ";
 583                 $catbox .= wfElement('input', array( 'type' => 'text', 'name' => 'categories', 'value' => $categories));
 584                 $catbox .= " &nbsp;" ;
 585                 $catbox .= wfElement('input', $cb_arr );
 586                 $catbox .= wfMsgExt('rc_categories_any', array('parseinline'));
 587         } else {
 588                 $catbox = "" ;
 589         }
 590
 591         $out = "<div class='namespacesettings'><form method='get' action='{$wgScript}'>\n";
 592
 593         foreach ( $nondefaults as $key => $value ) {
 594                 if ($key != 'namespace' && $key != 'invert')
 595                         $out .= wfElement('input', array( 'type' => 'hidden', 'name' => $key, 'value' => $value));
 596         }
 597
 598         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 599         $out .= "
 600 <div id='nsselect' class='recentchanges'>
 601         <label for='namespace'>" . wfMsgHtml('namespace') . "</label>
 602         {$namespaceselect}{$submitbutton}{$invertbox} <label for='nsinvert'>" . wfMsgHtml('invert') . "</label>{$catbox}\n</div>";
 603         $out .= '</form></div>';
 604         return $out;
 605 }
 606
 607
 608 /**
 609  * Format a diff for the newsfeed
 610  */
 611 function rcFormatDiff( $row ) {
 612         $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 613         $timestamp = wfTimestamp( TS_MW, $row->rc_timestamp );
 614         return rcFormatDiffRow( $titleObj,
 615                 $row->rc_last_oldid, $row->rc_this_oldid,
 616                 $timestamp,
 617                 $row->rc_comment );
 618 }
 619
 620 function rcFormatDiffRow( $title, $oldid, $newid, $timestamp, $comment ) {
 621         global $wgFeedDiffCutoff, $wgContLang, $wgUser;
 622         $fname = 'rcFormatDiff';
 623         wfProfileIn( $fname );
 624
 625         $skin = $wgUser->getSkin();
 626         $completeText = '<p>' . $skin->formatComment( $comment ) . "</p>\n";
 627
 628         if( $title->getNamespace() >= 0 ) {
 629                 if( $oldid ) {
 630                         wfProfileIn( "$fname-dodiff" );
 631
 632                         $de = new DifferenceEngine( $title, $oldid, $newid );
 633                         #$diffText = $de->getDiff( wfMsg( 'revisionasof',
 634                         #       $wgContLang->timeanddate( $timestamp ) ),
 635                         #       wfMsg( 'currentrev' ) );
 636                         $diffText = $de->getDiff(
 637                                 wfMsg( 'previousrevision' ), // hack
 638                                 wfMsg( 'revisionasof',
 639                                         $wgContLang->timeanddate( $timestamp ) ) );
 640
 641
 642                         if ( strlen( $diffText ) > $wgFeedDiffCutoff ) {
 643                                 // Omit large diffs
 644                                 $diffLink = $title->escapeFullUrl(
 645                                         'diff=' . $newid .
 646                                         '&oldid=' . $oldid );
 647                                 $diffText = '<a href="' .
 648                                         $diffLink .
 649                                         '">' .
 650                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 651                                         '</a>';
 652                         } elseif ( $diffText === false ) {
 653                                 // Error in diff engine, probably a missing revision
 654                                 $diffText = "<p>Can't load revision $newid</p>";
 655                         } else {
 656                                 // Diff output fine, clean up any illegal UTF-8
 657                                 $diffText = UtfNormal::cleanUp( $diffText );
 658                                 $diffText = rcApplyDiffStyle( $diffText );
 659                         }
 660                         wfProfileOut( "$fname-dodiff" );
 661                 } else {
 662                         $rev = Revision::newFromId( $newid );
 663                         if( is_null( $rev ) ) {
 664                                 $newtext = '';
 665                         } else {
 666                                 $newtext = $rev->getText();
 667                         }
 668                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 669                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 670                 }
 671                 $completeText .= $diffText;
 672         }
 673
 674         wfProfileOut( $fname );
 675         return $completeText;
 676 }
 677
 678 /**
 679  * Hacky application of diff styles for the feeds.
 680  * Might be 'cleaner' to use DOM or XSLT or something,
 681  * but *gack* it's a pain in the ass.
 682  *
 683  * @param $text String:
 684  * @return string
 685  * @private
 686  */
 687 function rcApplyDiffStyle( $text ) {
 688         $styles = array(
 689                 'diff'             => 'background-color: white;',
 690                 'diff-otitle'      => 'background-color: white;',
 691                 'diff-ntitle'      => 'background-color: white;',
 692                 'diff-addedline'   => 'background: #cfc; font-size: smaller;',
 693                 'diff-deletedline' => 'background: #ffa; font-size: smaller;',
 694                 'diff-context'     => 'background: #eee; font-size: smaller;',
 695                 'diffchange'       => 'color: red; font-weight: bold;',
 696         );
 697
 698         foreach( $styles as $class => $style ) {
 699                 $text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
 700                         "\\1style=\"$style\"\\3", $text );
 701         }
 702
 703         return $text;
 704 }
 705
 706 ?>