includes/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'Feed.php' );
  12 require_once( 'ChangesList.php' );
  13 require_once( 'Revision.php' );
  14
  15 /**
  16  * Constructor
  17  */
  18 function wfSpecialRecentchanges( $par, $specialPage ) {
  19         global $wgUser, $wgOut, $wgRequest, $wgUseRCPatrol;
  20         global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
  21         global $wgAllowCategorizedRecentChanges ;
  22         $fname = 'wfSpecialRecentchanges';
  23
  24         # Get query parameters
  25         $feedFormat = $wgRequest->getVal( 'feed' );
  26
  27         /* Checkbox values can't be true be default, because
  28          * we cannot differentiate between unset and not set at all
  29          */
  30         $defaults = array(
  31         /* int  */ 'days' => $wgUser->getDefaultOption('rcdays'),
  32         /* int  */ 'limit' => $wgUser->getDefaultOption('rclimit'),
  33         /* bool */ 'hideminor' => false,
  34         /* bool */ 'hidebots' => true,
  35         /* bool */ 'hideanons' => false,
  36         /* bool */ 'hideliu' => false,
  37         /* bool */ 'hidepatrolled' => false,
  38         /* bool */ 'hidemyself' => false,
  39         /* text */ 'from' => '',
  40         /* text */ 'namespace' => null,
  41         /* bool */ 'invert' => false,
  42         /* bool */ 'categories_any' => false,
  43         );
  44
  45         extract($defaults);
  46
  47
  48         $days = $wgUser->getOption( 'rcdays' );
  49         if ( !$days ) { $days = $defaults['days']; }
  50         $days = $wgRequest->getInt( 'days', $days );
  51
  52         $limit = $wgUser->getOption( 'rclimit' );
  53         if ( !$limit ) { $limit = $defaults['limit']; }
  54
  55         #       list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  56         $limit = $wgRequest->getInt( 'limit', $limit );
  57
  58         /* order of selection: url > preferences > default */
  59         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor') ? true : $defaults['hideminor'] );
  60
  61         # As a feed, use limited settings only
  62         if( $feedFormat ) {
  63                 global $wgFeedLimit;
  64                 if( $limit > $wgFeedLimit ) {
  65                         $options['limit'] = $wgFeedLimit;
  66                 }
  67
  68         } else {
  69
  70                 $namespace = $wgRequest->getIntOrNull( 'namespace' );
  71                 $invert = $wgRequest->getBool( 'invert', $defaults['invert'] );
  72                 $hidebots = $wgRequest->getBool( 'hidebots', $defaults['hidebots'] );
  73                 $hideanons = $wgRequest->getBool( 'hideanons', $defaults['hideanons'] );
  74                 $hideliu = $wgRequest->getBool( 'hideliu', $defaults['hideliu'] );
  75                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled', $defaults['hidepatrolled'] );
  76                 $hidemyself = $wgRequest->getBool ( 'hidemyself', $defaults['hidemyself'] );
  77                 $from = $wgRequest->getVal( 'from', $defaults['from'] );
  78
  79                 # Get query parameters from path
  80                 if( $par ) {
  81                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  82                         foreach ( $bits as $bit ) {
  83                                 if ( 'hidebots' == $bit ) $hidebots = 1;
  84                                 if ( 'bots' == $bit ) $hidebots = 0;
  85                                 if ( 'hideminor' == $bit ) $hideminor = 1;
  86                                 if ( 'minor' == $bit ) $hideminor = 0;
  87                                 if ( 'hideliu' == $bit ) $hideliu = 1;
  88                                 if ( 'hidepatrolled' == $bit ) $hidepatrolled = 1;
  89                                 if ( 'hideanons' == $bit ) $hideanons = 1;
  90                                 if ( 'hidemyself' == $bit ) $hidemyself = 1;
  91
  92                                 if ( is_numeric( $bit ) ) {
  93                                         $limit = $bit;
  94                                 }
  95
  96                                 if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
  97                                         $limit = $m[1];
  98                                 }
  99
 100                                 if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
 101                                         $days = $m[1];
 102                                 }
 103                         }
 104                 }
 105         }
 106
 107         if ( $limit < 0 || $limit > 5000 ) $limit = $defaults['limit'];
 108
 109
 110         # Database connection and caching
 111         $dbr =& wfGetDB( DB_SLAVE );
 112         extract( $dbr->tableNames( 'recentchanges', 'watchlist' ) );
 113
 114
 115         $cutoff_unixtime = time() - ( $days * 86400 );
 116         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 117         $cutoff = $dbr->timestamp( $cutoff_unixtime );
 118         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
 119                 $cutoff = $dbr->timestamp($from);
 120         } else {
 121                 $from = $defaults['from'];
 122         }
 123
 124         # 10 seconds server-side caching max
 125         $wgOut->setSquidMaxage( 10 );
 126
 127         # Get last modified date, for client caching
 128         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
 129         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
 130         if ( $feedFormat || !$wgUseRCPatrol ) {
 131                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
 132                         # Client cache fresh and headers sent, nothing more to do.
 133                         return;
 134                 }
 135         }
 136
 137         $hidem  = $hideminor ? 'AND rc_minor=0' : '';
 138         $hidem .= $hidebots ? ' AND rc_bot=0' : '';
 139         $hidem .= ( $hideliu && !$hidemyself ) ? ' AND rc_user=0' : '';
 140         $hidem .= $hidepatrolled ? ' AND rc_patrolled=0' : '';
 141         $hidem .= ( $hideanons && !$hideliu ) ? ' AND rc_user <> 0' : '';
 142         if ( $hidemyself ) {
 143                 if ( $wgUser->getID() ) {
 144                         $hidem .= ' AND rc_user <> '.$wgUser->getID();
 145                 } else {
 146                         $hidem .= ' AND rc_user_text<>' . $dbr->addQuotes( $wgUser->getName() );
 147                 }
 148         }
 149         $hidem .= is_null( $namespace ) ?  '' : ' AND rc_namespace' . ($invert ? '!=' : '=') . $namespace;
 150
 151         // This is the big thing!
 152
 153         $uid = $wgUser->getID();
 154
 155         // Perform query
 156         $sql2 = "SELECT * FROM $recentchanges FORCE INDEX (rc_timestamp) " .
 157           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
 158           "WHERE rc_timestamp >= '{$cutoff}' {$hidem} " .
 159           "ORDER BY rc_timestamp DESC";
 160         $sql2 = $dbr->limitResult($sql2, $limit, 0);
 161         $res = $dbr->query( $sql2, $fname );
 162
 163         // Fetch results, prepare a batch link existence check query
 164         $rows = array();
 165         $batch = new LinkBatch;
 166         while( $row = $dbr->fetchObject( $res ) ){
 167                 $rows[] = $row;
 168                 if ( !$feedFormat ) {
 169                         // User page link
 170                         $title = Title::makeTitleSafe( NS_USER, $row->rc_user_text );
 171                         $batch->addObj( $title );
 172
 173                         // User talk
 174                         $title = Title::makeTitleSafe( NS_USER_TALK, $row->rc_user_text );
 175                         $batch->addObj( $title );
 176                 }
 177
 178         }
 179         $dbr->freeResult( $res );
 180
 181         if( $feedFormat ) {
 182                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 183         } else {
 184
 185                 # Web output...
 186
 187                 // Run existence checks
 188                 $batch->execute();
 189                 $any = $wgRequest->getBool( 'categories_any', $defaults['categories_any']);
 190
 191                 // Output header
 192                 if ( !$specialPage->including() ) {
 193                         $wgOut->addWikiText( wfMsgForContent( "recentchangestext" ) );
 194
 195                         // Dump everything here
 196                         $nondefaults = array();
 197
 198                         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 199                         wfAppendToArrayIfNotDefault( 'limit', $limit , $defaults, $nondefaults);
 200                         wfAppendToArrayIfNotDefault( 'hideminor', $hideminor, $defaults, $nondefaults);
 201                         wfAppendToArrayIfNotDefault( 'hidebots', $hidebots, $defaults, $nondefaults);
 202                         wfAppendToArrayIfNotDefault( 'hideanons', $hideanons, $defaults, $nondefaults );
 203                         wfAppendToArrayIfNotDefault( 'hideliu', $hideliu, $defaults, $nondefaults);
 204                         wfAppendToArrayIfNotDefault( 'hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
 205                         wfAppendToArrayIfNotDefault( 'hidemyself', $hidemyself, $defaults, $nondefaults);
 206                         wfAppendToArrayIfNotDefault( 'from', $from, $defaults, $nondefaults);
 207                         wfAppendToArrayIfNotDefault( 'namespace', $namespace, $defaults, $nondefaults);
 208                         wfAppendToArrayIfNotDefault( 'invert', $invert, $defaults, $nondefaults);
 209                         wfAppendToArrayIfNotDefault( 'categories_any', $any, $defaults, $nondefaults);
 210
 211                         // Add end of the texts
 212                         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $defaults, $nondefaults ) . "\n" );
 213                         $wgOut->addHTML( rcNamespaceForm( $namespace, $invert, $nondefaults, $any ) . '</div>'."\n");
 214                 }
 215
 216                 // And now for the content
 217                 $sk = $wgUser->getSkin();
 218                 $wgOut->setSyndicated( true );
 219
 220                 $list = ChangesList::newFromUser( $wgUser );
 221
 222                 if ( $wgAllowCategorizedRecentChanges ) {
 223                         $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 224                         $categories = str_replace ( "|" , "\n" , $categories ) ;
 225                         $categories = explode ( "\n" , $categories ) ;
 226                         rcFilterByCategories ( $rows , $categories , $any ) ;
 227                 }
 228
 229                 $s = $list->beginRecentChangesList();
 230                 $counter = 1;
 231                 foreach( $rows as $obj ){
 232                         if( $limit == 0) {
 233                                 break;
 234                         }
 235
 236                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 237                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 238                                 $rc = RecentChange::newFromRow( $obj );
 239                                 $rc->counter = $counter++;
 240
 241                                 if ($wgShowUpdatedMarker
 242                                         && !empty( $obj->wl_notificationtimestamp )
 243                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 244                                                 $rc->notificationtimestamp = true;
 245                                 } else {
 246                                         $rc->notificationtimestamp = false;
 247                                 }
 248
 249                                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 250                                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" . $dbr->strencode($obj->rc_title) ."' AND wl_namespace=$obj->rc_namespace" ;
 251                                         $res3 = $dbr->query( $sql3, 'wfSpecialRecentChanges');
 252                                         $x = $dbr->fetchObject( $res3 );
 253                                         $rc->numberofWatchingusers = $x->n;
 254                                 } else {
 255                                         $rc->numberofWatchingusers = 0;
 256                                 }
 257                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 258                                 --$limit;
 259                         }
 260                 }
 261                 $s .= $list->endRecentChangesList();
 262                 $wgOut->addHTML( $s );
 263         }
 264 }
 265
 266 function rcFilterByCategories ( &$rows , $categories , $any ) {
 267         require_once ( 'Categoryfinder.php' ) ;
 268
 269         # Filter categories
 270         $cats = array () ;
 271         foreach ( $categories AS $cat ) {
 272                 $cat = trim ( $cat ) ;
 273                 if ( $cat == "" ) continue ;
 274                 $cats[] = $cat ;
 275         }
 276
 277         # Filter articles
 278         $articles = array () ;
 279         $a2r = array () ;
 280         foreach ( $rows AS $k => $r ) {
 281                 $nt = Title::newFromText ( $r->rc_title , $r->rc_namespace ) ;
 282                 $id = $nt->getArticleID() ;
 283                 if ( $id == 0 ) continue ; # Page might have been deleted...
 284                 if ( !in_array ( $id , $articles ) ) {
 285                         $articles[] = $id ;
 286                 }
 287                 if ( !isset ( $a2r[$id] ) ) {
 288                         $a2r[$id] = array() ;
 289                 }
 290                 $a2r[$id][] = $k ;
 291         }
 292
 293         # Shortcut?
 294         if ( count ( $articles ) == 0 OR count ( $cats ) == 0 )
 295                 return ;
 296
 297         # Look up
 298         $c = new Categoryfinder ;
 299         $c->seed ( $articles , $cats , $any ? "OR" : "AND" ) ;
 300         $match = $c->run () ;
 301
 302         # Filter
 303         $newrows = array () ;
 304         foreach ( $match AS $id ) {
 305                 foreach ( $a2r[$id] AS $rev ) {
 306                         $k = $rev ;
 307                         $newrows[$k] = $rows[$k] ;
 308                 }
 309         }
 310         $rows = $newrows ;
 311 }
 312
 313 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 314         global $messageMemc, $wgDBname, $wgFeedCacheTimeout;
 315         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 316
 317         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 318                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 319                 return false;
 320         }
 321
 322         $timekey = "$wgDBname:rcfeed:$feedFormat:timestamp";
 323         $key = "$wgDBname:rcfeed:$feedFormat:limit:$limit:minor:$hideminor";
 324
 325         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 326                 ' [' . $wgContLanguageCode . ']';
 327         $feed = new $wgFeedClasses[$feedFormat](
 328                 $feedTitle,
 329                 htmlspecialchars( wfMsgForContent( 'recentchangestext' ) ),
 330                 $wgTitle->getFullUrl() );
 331
 332         /**
 333          * Bumping around loading up diffs can be pretty slow, so where
 334          * possible we want to cache the feed output so the next visitor
 335          * gets it quick too.
 336          */
 337         $cachedFeed = false;
 338         if( ( $wgFeedCacheTimeout > 0 ) && ( $feedLastmod = $messageMemc->get( $timekey ) ) ) {
 339                 /**
 340                  * If the cached feed was rendered very recently, we may
 341                  * go ahead and use it even if there have been edits made
 342                  * since it was rendered. This keeps a swarm of requests
 343                  * from being too bad on a super-frequently edited wiki.
 344                  */
 345                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 346                                 < $wgFeedCacheTimeout
 347                         || wfTimestamp( TS_UNIX, $feedLastmod )
 348                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 349                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 350                         $cachedFeed = $messageMemc->get( $key );
 351                 } else {
 352                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 353                 }
 354         }
 355         if( is_string( $cachedFeed ) ) {
 356                 wfDebug( "RC: Outputting cached feed\n" );
 357                 $feed->httpHeaders();
 358                 echo $cachedFeed;
 359         } else {
 360                 wfDebug( "RC: rendering new feed and caching it\n" );
 361                 ob_start();
 362                 rcDoOutputFeed( $rows, $feed );
 363                 $cachedFeed = ob_get_contents();
 364                 ob_end_flush();
 365
 366                 $expire = 3600 * 24; # One day
 367                 $messageMemc->set( $key, $cachedFeed );
 368                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 369         }
 370         return true;
 371 }
 372
 373 function rcDoOutputFeed( $rows, &$feed ) {
 374         $fname = 'rcDoOutputFeed';
 375         wfProfileIn( $fname );
 376
 377         $feed->outHeader();
 378
 379         # Merge adjacent edits by one user
 380         $sorted = array();
 381         $n = 0;
 382         foreach( $rows as $obj ) {
 383                 if( $n > 0 &&
 384                         $obj->rc_namespace >= 0 &&
 385                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 386                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 387                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 388                 } else {
 389                         $sorted[$n] = $obj;
 390                         $n++;
 391                 }
 392                 $first = false;
 393         }
 394
 395         foreach( $sorted as $obj ) {
 396                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 397                 $talkpage = $title->getTalkPage();
 398                 $item = new FeedItem(
 399                         $title->getPrefixedText(),
 400                         rcFormatDiff( $obj ),
 401                         $title->getFullURL(),
 402                         $obj->rc_timestamp,
 403                         $obj->rc_user_text,
 404                         $talkpage->getFullURL()
 405                         );
 406                 $feed->outItem( $item );
 407         }
 408         $feed->outFooter();
 409         wfProfileOut( $fname );
 410 }
 411
 412 /**
 413  *
 414  */
 415 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 416         global $wgUser, $wgLang, $wgContLang;
 417         $sk = $wgUser->getSkin();
 418         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 419           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 420           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 421         return $s;
 422 }
 423
 424 /**
 425  *
 426  */
 427 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 428         global $wgUser, $wgLang, $wgContLang;
 429         $sk = $wgUser->getSkin();
 430         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 431           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 432           ($lim ? '&limit='.$lim : '') );
 433         return $s;
 434 }
 435
 436 /**
 437  * Used by Recentchangeslinked
 438  */
 439 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 440         $botLink = '', $liuLink = '', $patrLink = '', $myselfLink = '' ) {
 441         if ($more != '') $more .= '&';
 442         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 443           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 444           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 445           rcCountLink( 500, $days, $page, $more  ) .
 446           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 447         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 448           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 449           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 450           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 451           rcDaysLink( $limit, 30, $page, $more  ) .
 452           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 453         $shm = wfMsg( 'showhideminor', $minorLink, $botLink, $liuLink, $patrLink, $myselfLink );
 454         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 455         return $note;
 456 }
 457
 458
 459 /**
 460  * Makes change an option link which carries all the other options
 461  */
 462 function makeOptionsLink( $title, $override, $options ) {
 463         global $wgUser, $wgContLang;
 464         $sk = $wgUser->getSkin();
 465         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 466                 $title, wfArrayToCGI( $override, $options ) );
 467 }
 468
 469 /**
 470  * Creates the options panel
 471  */
 472 function rcOptionsPanel( $defaults, $nondefaults ) {
 473         global $wgLang;
 474
 475         $options = $nondefaults + $defaults;
 476
 477         if( $options['from'] )
 478                 $note = wfMsg( 'rcnotefrom', $wgLang->formatNum( $options['limit'] ), $wgLang->timeanddate( $options['from'], true ) );
 479         else
 480                 $note = wfMsg( 'rcnote', $wgLang->formatNum( $options['limit'] ), $wgLang->formatNum( $options['days'] ) );
 481
 482         // limit links
 483         $cl = '';
 484         $options_limit = array(50, 100, 250, 500);
 485         $i = 0;
 486         while ( $i+1 < count($options_limit) ) {
 487                 $cl .=  makeOptionsLink( $options_limit[$i], array( 'limit' => $options_limit[$i] ), $nondefaults) . ' | ' ;
 488                 $i++;
 489         }
 490         $cl .=  makeOptionsLink( $options_limit[$i], array( 'limit' => $options_limit[$i] ), $nondefaults) ;
 491
 492         // day links, reset 'from' to none
 493         $dl = '';
 494         $options_days = array(1, 3, 7, 14, 30);
 495         $i = 0;
 496         while ( $i+1 < count($options_days) ) {
 497                 $dl .=  makeOptionsLink( $options_days[$i], array( 'days' => $options_days[$i], 'from' => '' ), $nondefaults) . ' | ' ;
 498                 $i++;
 499         }
 500         $dl .=  makeOptionsLink( $options_days[$i], array( 'days' => $options_days[$i], 'from' => '' ), $nondefaults) ;
 501
 502         // show/hide links
 503         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 504         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 505                 array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 506         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 507                 array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 508         $anonsLink = makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 509                 array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 510         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 511                 array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 512         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 513                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 514         $myselfLink = makeOptionsLink( $showhide[1-$options['hidemyself']],
 515                 array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 516         $hl = wfMsg( 'showhideminor', $minorLink, $botLink, $liuLink, $patrLink, $myselfLink, $anonsLink );
 517
 518         // show from this onward link
 519         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 520         $tl =  makeOptionsLink( $now, array( 'from' => wfTimestampNow()), $nondefaults );
 521
 522         $rclinks = wfMsg( 'rclinks', $cl, $dl, $hl );
 523         $rclistfrom = wfMsg( 'rclistfrom', $tl );
 524         return "$note<br />$rclinks<br />$rclistfrom";
 525
 526 }
 527
 528 /**<F2>
 529  * Creates the choose namespace selection
 530  *
 531  * @access private
 532  *
 533  * @param mixed $namespace The key of the currently selected namespace, empty string
 534  *              if there is none
 535  * @param bool $invert Whether to invert the namespace selection
 536  * @param array $nondefaults An array of non default options to be remembered
 537  * @param bool $categories_any Default value for the checkbox
 538  *
 539  * @return string
 540  */
 541 function rcNamespaceForm( $namespace, $invert, $nondefaults, $categories_any ) {
 542         global $wgScript, $wgAllowCategorizedRecentChanges, $wgRequest;
 543         $t = Title::makeTitle( NS_SPECIAL, 'Recentchanges' );
 544
 545         $namespaceselect = HTMLnamespaceselector($namespace, '');
 546         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . "\" />\n";
 547         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 548
 549         if ( $wgAllowCategorizedRecentChanges ) {
 550                 $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 551                 $cb_arr = array( 'type' => 'checkbox', 'name' => 'categories_any', 'value' => "1" ) ;
 552                 if ( $categories_any ) $cb_arr['checked'] = "checked" ;
 553                 $catbox = "<br/>" ;
 554                 $catbox .= wfMsg('rc_categories') . " ";
 555                 $catbox .= wfElement('input', array( 'type' => 'text', 'name' => 'categories', 'value' => $categories));
 556                 $catbox .= " &nbsp;" ;
 557                 $catbox .= wfElement('input', $cb_arr );
 558                 $catbox .= wfMsg('rc_categories_any');
 559         } else {
 560                 $catbox = "" ;
 561         }
 562
 563         $out = "<div class='namespacesettings'><form method='get' action='{$wgScript}'>\n";
 564
 565         foreach ( $nondefaults as $key => $value ) {
 566                 if ($key != 'namespace' && $key != 'invert')
 567                         $out .= wfElement('input', array( 'type' => 'hidden', 'name' => $key, 'value' => $value));
 568         }
 569
 570         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 571         $out .= "
 572 <div id='nsselect' class='recentchanges'>
 573         <label for='namespace'>" . wfMsgHtml('namespace') . "</label>
 574         {$namespaceselect}{$submitbutton}{$invertbox} <label for='nsinvert'>" . wfMsgHtml('invert') . "</label>{$catbox}\n</div>";
 575         $out .= '</form></div>';
 576         return $out;
 577 }
 578
 579
 580 /**
 581  * Format a diff for the newsfeed
 582  */
 583 function rcFormatDiff( $row ) {
 584         global $wgFeedDiffCutoff, $wgContLang;
 585         $fname = 'rcFormatDiff';
 586         wfProfileIn( $fname );
 587
 588         require_once( 'DifferenceEngine.php' );
 589         $completeText = '<p>' . htmlspecialchars( $row->rc_comment ) . "</p>\n";
 590
 591         if( $row->rc_namespace >= 0 ) {
 592                 if( $row->rc_last_oldid ) {
 593                         wfProfileIn( "$fname-dodiff" );
 594
 595                         $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 596                         $de = new DifferenceEngine( $titleObj, $row->rc_last_oldid, $row->rc_this_oldid );
 597                         $diffText = $de->getDiff( wfMsg( 'revisionasof', $wgContLang->timeanddate( $row->rc_timestamp ) ),
 598                                 wfMsg( 'currentrev' ) );
 599
 600                         if ( strlen( $diffText ) > $wgFeedDiffCutoff ) {
 601                                 // Omit large diffs
 602                                 $diffLink = $titleObj->escapeFullUrl(
 603                                         'diff=' . $row->rc_this_oldid .
 604                                         '&oldid=' . $row->rc_last_oldid );
 605                                 $diffText = '<a href="' .
 606                                         $diffLink .
 607                                         '">' .
 608                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 609                                         '</a>';
 610                         } elseif ( $diffText === false ) {
 611                                 // Error in diff engine, probably a missing revision
 612                                 $diffText = "<p>Can't load revision $row->rc_this_oldid</p>";
 613                         } else {
 614                                 // Diff output fine, clean up any illegal UTF-8
 615                                 $diffText = UtfNormal::cleanUp( $diffText );
 616                                 $diffText = rcApplyDiffStyle( $diffText );
 617                         }
 618                         wfProfileOut( "$fname-dodiff" );
 619                 } else {
 620                         $rev = Revision::newFromId( $row->rc_this_oldid );
 621                         if( is_null( $rev ) ) {
 622                                 $newtext = '';
 623                         } else {
 624                                 $newtext = $rev->getText();
 625                         }
 626                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 627                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 628                 }
 629                 $completeText .= $diffText;
 630         }
 631
 632         wfProfileOut( $fname );
 633         return $completeText;
 634 }
 635
 636 /**
 637  * Hacky application of diff styles for the feeds.
 638  * Might be 'cleaner' to use DOM or XSLT or something,
 639  * but *gack* it's a pain in the ass.
 640  *
 641  * @param string $text
 642  * @return string
 643  * @access private
 644  */
 645 function rcApplyDiffStyle( $text ) {
 646         $styles = array(
 647                 'diff'             => 'background-color: white;',
 648                 'diff-otitle'      => 'background-color: white;',
 649                 'diff-ntitle'      => 'background-color: white;',
 650                 'diff-addedline'   => 'background: #cfc; font-size: smaller;',
 651                 'diff-deletedline' => 'background: #ffa; font-size: smaller;',
 652                 'diff-context'     => 'background: #eee; font-size: smaller;',
 653                 'diffchange'       => 'color: red; font-weight: bold;',
 654         );
 655
 656         foreach( $styles as $class => $style ) {
 657                 $text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
 658                         "\\1style=\"$style\"\\3", $text );
 659         }
 660
 661         return $text;
 662 }
 663
 664 ?>