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