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