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