includes/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  *
   9  */
  10 require_once( dirname(__FILE__) . '/ChangesList.php' );
  11
  12 /**
  13  * Constructor
  14  */
  15 function wfSpecialRecentchanges( $par, $specialPage ) {
  16         global $wgUser, $wgOut, $wgRequest, $wgUseRCPatrol;
  17         global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
  18         global $wgAllowCategorizedRecentChanges ;
  19         $fname = 'wfSpecialRecentchanges';
  20
  21         # Get query parameters
  22         $feedFormat = $wgRequest->getVal( 'feed' );
  23
  24         /* Checkbox values can't be true by default, because
  25          * we cannot differentiate between unset and not set at all
  26          */
  27         $defaults = array(
  28         /* int  */ 'days' => $wgUser->getDefaultOption('rcdays'),
  29         /* int  */ 'limit' => $wgUser->getDefaultOption('rclimit'),
  30         /* bool */ 'hideminor' => false,
  31         /* bool */ 'hidebots' => true,
  32         /* bool */ 'hideanons' => false,
  33         /* bool */ 'hideliu' => false,
  34         /* bool */ 'hidepatrolled' => false,
  35         /* bool */ 'hidemyself' => false,
  36         /* text */ 'from' => '',
  37         /* text */ 'namespace' => null,
  38         /* bool */ 'invert' => false,
  39         /* bool */ 'categories_any' => false,
  40         );
  41
  42         extract($defaults);
  43
  44
  45         $days = $wgUser->getOption( 'rcdays', $defaults['days']);
  46         $days = $wgRequest->getInt( 'days', $days );
  47
  48         $limit = $wgUser->getOption( 'rclimit', $defaults['limit'] );
  49
  50         #       list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  51         $limit = $wgRequest->getInt( 'limit', $limit );
  52
  53         /* order of selection: url > preferences > default */
  54         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor') ? true : $defaults['hideminor'] );
  55
  56         # As a feed, use limited settings only
  57         if( $feedFormat ) {
  58                 global $wgFeedLimit;
  59                 $limit = min( $wgFeedLimit, $limit );
  60         } else {
  61
  62                 $namespace = $wgRequest->getIntOrNull( 'namespace' );
  63                 $invert = $wgRequest->getBool( 'invert', $defaults['invert'] );
  64                 $hidebots = $wgRequest->getBool( 'hidebots', $defaults['hidebots'] );
  65                 $hideanons = $wgRequest->getBool( 'hideanons', $defaults['hideanons'] );
  66                 $hideliu = $wgRequest->getBool( 'hideliu', $defaults['hideliu'] );
  67                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled', $defaults['hidepatrolled'] );
  68                 $hidemyself = $wgRequest->getBool ( 'hidemyself', $defaults['hidemyself'] );
  69                 $from = $wgRequest->getVal( 'from', $defaults['from'] );
  70
  71                 # Get query parameters from path
  72                 if( $par ) {
  73                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  74                         foreach ( $bits as $bit ) {
  75                                 if ( 'hidebots' == $bit ) $hidebots = 1;
  76                                 if ( 'bots' == $bit ) $hidebots = 0;
  77                                 if ( 'hideminor' == $bit ) $hideminor = 1;
  78                                 if ( 'minor' == $bit ) $hideminor = 0;
  79                                 if ( 'hideliu' == $bit ) $hideliu = 1;
  80                                 if ( 'hidepatrolled' == $bit ) $hidepatrolled = 1;
  81                                 if ( 'hideanons' == $bit ) $hideanons = 1;
  82                                 if ( 'hidemyself' == $bit ) $hidemyself = 1;
  83
  84                                 if ( is_numeric( $bit ) ) {
  85                                         $limit = $bit;
  86                                 }
  87
  88                                 $m = array();
  89                                 if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
  90                                         $limit = $m[1];
  91                                 }
  92
  93                                 if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
  94                                         $days = $m[1];
  95                                 }
  96                         }
  97                 }
  98         }
  99
 100         if ( $limit < 0 || $limit > 5000 ) $limit = $defaults['limit'];
 101
 102         # Database connection and caching
 103         $dbr = wfGetDB( DB_SLAVE );
 104
 105         $cutoff_unixtime = time() - ( $days * 86400 );
 106         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 107         $cutoff = $dbr->timestamp( $cutoff_unixtime );
 108         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
 109                 $cutoff = $dbr->timestamp($from);
 110         } else {
 111                 $from = $defaults['from'];
 112         }
 113
 114         # 10 seconds server-side caching max
 115         $wgOut->setSquidMaxage( 10 );
 116
 117         # Get last modified date, for client caching
 118         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
 119         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
 120         if ( $feedFormat || !$wgUseRCPatrol ) {
 121                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
 122                         # Client cache fresh and headers sent, nothing more to do.
 123                         return;
 124                 }
 125         }
 126
 127         # It makes no sense to hide both anons and logged-in users
 128         # Where this occurs, force anons to be shown
 129         $forcebot = false;
 130         if( $hideanons && $hideliu ){
 131                 # Check if the user wants to show bots only
 132                 if( $hidebots ){
 133                         $hideanons = 0;
 134                 } else {
 135                         $forcebot = true;
 136                         $hidebots = 0;
 137                 }
 138         }
 139
 140         # Form WHERE fragments for all the options
 141         $hidem  = $hideminor ? 'AND rc_minor = 0' : '';
 142         $hidem .= $hidebots ? ' AND rc_bot = 0' : '';
 143         $hidem .= $hideliu && !$forcebot ? ' AND rc_user = 0' : '';
 144         $hidem .= ($wgUser->useRCPatrol() && $hidepatrolled ) ? ' AND rc_patrolled = 0' : '';
 145         $hidem .= $hideanons && !$forcebot ? ' AND rc_user != 0' : '';
 146         $hidem .= $forcebot ? ' AND rc_bot = 1' : '';
 147
 148         if( $hidemyself ) {
 149                 if( $wgUser->getId() ) {
 150                         $hidem .= ' AND rc_user != ' . $wgUser->getId();
 151                 } else {
 152                         $hidem .= ' AND rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 153                 }
 154         }
 155
 156         // JOIN on watchlist for users
 157         $uid = $wgUser->getId();
 158         if( $uid ) {
 159                 $tables = array( 'recentchanges', 'watchlist' );
 160                 $join_conds = array( 'watchlist' => array('LEFT JOIN',"wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace") );
 161         } else {
 162                 $tables = array( 'recentchanges' );
 163                 $join_conds = array();
 164         }
 165
 166         # Namespace filtering
 167         $hidem .= is_null($namespace) ?  '' : ' AND rc_namespace' . ($invert ? '!=' : '=') . $namespace;
 168
 169         // Is there either one namespace selected or excluded?
 170         // Also, if this is "all" or main namespace, just use timestamp index.
 171         if( is_null($namespace) || $invert || $namespace == NS_MAIN ) {
 172                 $res = $dbr->select( $tables, '*',
 173                         array( "rc_timestamp >= '{$cutoff}' {$hidem}" ),
 174                         __METHOD__,
 175                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 176                                 'USE INDEX' => array('recentchanges' => 'rc_timestamp') ),
 177                         $join_conds );
 178         // We have a new_namespace_time index! UNION over new=(0,1) and sort result set!
 179         } else {
 180                 // New pages
 181                 $sqlNew = $dbr->selectSQLText( $tables, '*',
 182                         array( 'rc_new' => 1,
 183                                 "rc_timestamp >= '{$cutoff}' {$hidem}" ),
 184                         __METHOD__,
 185                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 186                                 'USE INDEX' =>  array('recentchanges' => 'new_name_timestamp') ),
 187                         $join_conds );
 188                 // Old pages
 189                 $sqlOld = $dbr->selectSQLText( $tables, '*',
 190                         array( 'rc_new' => 0,
 191                                 "rc_timestamp >= '{$cutoff}' {$hidem}" ),
 192                         __METHOD__,
 193                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 194                                 'USE INDEX' =>  array('recentchanges' => 'new_name_timestamp') ),
 195                         $join_conds );
 196                 # Join the two fast queries, and sort the result set
 197                 $sql = "($sqlNew) UNION ($sqlOld) ORDER BY rc_timestamp DESC LIMIT $limit";
 198                 $res = $dbr->query( $sql, __METHOD__ );
 199         }
 200
 201         // Fetch results, prepare a batch link existence check query
 202         $rows = array();
 203         $batch = new LinkBatch;
 204         while( $row = $dbr->fetchObject( $res ) ){
 205                 $rows[] = $row;
 206                 if ( !$feedFormat ) {
 207                         // User page and talk links
 208                         $batch->add( NS_USER, $row->rc_user_text  );
 209                         $batch->add( NS_USER_TALK, $row->rc_user_text  );
 210                 }
 211
 212         }
 213         $dbr->freeResult( $res );
 214
 215         if( $feedFormat ) {
 216                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 217         } else {
 218
 219                 # Web output...
 220
 221                 // Run existence checks
 222                 $batch->execute();
 223                 $any = $wgRequest->getBool( 'categories_any', $defaults['categories_any']);
 224
 225                 // Output header
 226                 if ( !$specialPage->including() ) {
 227                         $wgOut->addWikiText( wfMsgForContentNoTrans( "recentchangestext" ) );
 228
 229                         // Dump everything here
 230                         $nondefaults = array();
 231
 232                         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 233                         wfAppendToArrayIfNotDefault( 'limit', $limit , $defaults, $nondefaults);
 234                         wfAppendToArrayIfNotDefault( 'hideminor', $hideminor, $defaults, $nondefaults);
 235                         wfAppendToArrayIfNotDefault( 'hidebots', $hidebots, $defaults, $nondefaults);
 236                         wfAppendToArrayIfNotDefault( 'hideanons', $hideanons, $defaults, $nondefaults );
 237                         wfAppendToArrayIfNotDefault( 'hideliu', $hideliu, $defaults, $nondefaults);
 238                         wfAppendToArrayIfNotDefault( 'hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
 239                         wfAppendToArrayIfNotDefault( 'hidemyself', $hidemyself, $defaults, $nondefaults);
 240                         wfAppendToArrayIfNotDefault( 'from', $from, $defaults, $nondefaults);
 241                         wfAppendToArrayIfNotDefault( 'namespace', $namespace, $defaults, $nondefaults);
 242                         wfAppendToArrayIfNotDefault( 'invert', $invert, $defaults, $nondefaults);
 243                         wfAppendToArrayIfNotDefault( 'categories_any', $any, $defaults, $nondefaults);
 244
 245                         // Add end of the texts
 246                         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $defaults, $nondefaults ) . "\n" );
 247                         $wgOut->addHTML( rcNamespaceForm( $namespace, $invert, $nondefaults, $any ) . '</div>'."\n");
 248                 }
 249
 250                 // And now for the content
 251                 $wgOut->setSyndicated( true );
 252
 253                 $list = ChangesList::newFromUser( $wgUser );
 254
 255                 if ( $wgAllowCategorizedRecentChanges ) {
 256                         $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 257                         $categories = str_replace ( "|" , "\n" , $categories ) ;
 258                         $categories = explode ( "\n" , $categories ) ;
 259                         rcFilterByCategories ( $rows , $categories , $any ) ;
 260                 }
 261
 262                 $s = $list->beginRecentChangesList();
 263                 $counter = 1;
 264
 265                 $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
 266                 $watcherCache = array();
 267
 268                 foreach( $rows as $obj ){
 269                         if( $limit == 0) {
 270                                 break;
 271                         }
 272
 273                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 274                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 275                                 $rc = RecentChange::newFromRow( $obj );
 276                                 $rc->counter = $counter++;
 277
 278                                 if ($wgShowUpdatedMarker
 279                                         && !empty( $obj->wl_notificationtimestamp )
 280                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 281                                                 $rc->notificationtimestamp = true;
 282                                 } else {
 283                                         $rc->notificationtimestamp = false;
 284                                 }
 285
 286                                 $rc->numberofWatchingusers = 0; // Default
 287                                 if ($showWatcherCount && $obj->rc_namespace >= 0) {
 288                                         if (!isset($watcherCache[$obj->rc_namespace][$obj->rc_title])) {
 289                                                 $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 290                                                         $dbr->selectField( 'watchlist',
 291                                                                 'COUNT(*)',
 292                                                                 array(
 293                                                                         'wl_namespace' => $obj->rc_namespace,
 294                                                                         'wl_title' => $obj->rc_title,
 295                                                                 ),
 296                                                                 __METHOD__ . '-watchers' );
 297                                         }
 298                                         $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 299                                 }
 300                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 301                                 --$limit;
 302                         }
 303                 }
 304                 $s .= $list->endRecentChangesList();
 305                 $wgOut->addHTML( $s );
 306         }
 307 }
 308
 309 function rcFilterByCategories ( &$rows , $categories , $any ) {
 310         if( empty( $categories ) ) {
 311                 return;
 312         }
 313
 314         # Filter categories
 315         $cats = array () ;
 316         foreach ( $categories AS $cat ) {
 317                 $cat = trim ( $cat ) ;
 318                 if ( $cat == "" ) continue ;
 319                 $cats[] = $cat ;
 320         }
 321
 322         # Filter articles
 323         $articles = array () ;
 324         $a2r = array () ;
 325         foreach ( $rows AS $k => $r ) {
 326                 $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 327                 $id = $nt->getArticleID() ;
 328                 if ( $id == 0 ) continue ; # Page might have been deleted...
 329                 if ( !in_array ( $id , $articles ) ) {
 330                         $articles[] = $id ;
 331                 }
 332                 if ( !isset ( $a2r[$id] ) ) {
 333                         $a2r[$id] = array() ;
 334                 }
 335                 $a2r[$id][] = $k ;
 336         }
 337
 338         # Shortcut?
 339         if ( count ( $articles ) == 0 OR count ( $cats ) == 0 )
 340                 return ;
 341
 342         # Look up
 343         $c = new Categoryfinder ;
 344         $c->seed ( $articles , $cats , $any ? "OR" : "AND" ) ;
 345         $match = $c->run () ;
 346
 347         # Filter
 348         $newrows = array () ;
 349         foreach ( $match AS $id ) {
 350                 foreach ( $a2r[$id] AS $rev ) {
 351                         $k = $rev ;
 352                         $newrows[$k] = $rows[$k] ;
 353                 }
 354         }
 355         $rows = $newrows ;
 356 }
 357
 358 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 359         global $messageMemc, $wgFeedCacheTimeout;
 360         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 361         global $wgFeed;
 362
 363         if ( !$wgFeed ) {
 364                 global $wgOut;
 365                 $wgOut->addWikiMsg( 'feed-unavailable' );
 366                 return;
 367         }
 368
 369         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 370                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 371                 return false;
 372         }
 373
 374         $timekey = wfMemcKey( 'rcfeed', $feedFormat, 'timestamp' );
 375         $key = wfMemcKey( 'rcfeed', $feedFormat, 'limit', $limit, 'minor', $hideminor );
 376
 377         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 378                 ' [' . $wgContLanguageCode . ']';
 379         $feed = new $wgFeedClasses[$feedFormat](
 380                 $feedTitle,
 381                 htmlspecialchars( wfMsgForContent( 'recentchanges-feed-description' ) ),
 382                 $wgTitle->getFullUrl() );
 383
 384         //purge cache if requested
 385         global $wgRequest, $wgUser;
 386         $purge = $wgRequest->getVal( 'action' ) == 'purge';
 387         if ( $purge && $wgUser->isAllowed('purge') ) {
 388                 $messageMemc->delete( $timekey );
 389                 $messageMemc->delete( $key );
 390         }
 391
 392         /**
 393          * Bumping around loading up diffs can be pretty slow, so where
 394          * possible we want to cache the feed output so the next visitor
 395          * gets it quick too.
 396          */
 397         $cachedFeed = false;
 398         if( ( $wgFeedCacheTimeout > 0 ) && ( $feedLastmod = $messageMemc->get( $timekey ) ) ) {
 399                 /**
 400                  * If the cached feed was rendered very recently, we may
 401                  * go ahead and use it even if there have been edits made
 402                  * since it was rendered. This keeps a swarm of requests
 403                  * from being too bad on a super-frequently edited wiki.
 404                  */
 405                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 406                                 < $wgFeedCacheTimeout
 407                         || wfTimestamp( TS_UNIX, $feedLastmod )
 408                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 409                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 410                         $cachedFeed = $messageMemc->get( $key );
 411                 } else {
 412                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 413                 }
 414         }
 415         if( is_string( $cachedFeed ) ) {
 416                 wfDebug( "RC: Outputting cached feed\n" );
 417                 $feed->httpHeaders();
 418                 echo $cachedFeed;
 419         } else {
 420                 wfDebug( "RC: rendering new feed and caching it\n" );
 421                 ob_start();
 422                 rcDoOutputFeed( $rows, $feed );
 423                 $cachedFeed = ob_get_contents();
 424                 ob_end_flush();
 425
 426                 $expire = 3600 * 24; # One day
 427                 $messageMemc->set( $key, $cachedFeed );
 428                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 429         }
 430         return true;
 431 }
 432
 433 /**
 434  * @todo document
 435  * @param $rows Database resource with recentchanges rows
 436  */
 437 function rcDoOutputFeed( $rows, &$feed ) {
 438         wfProfileIn( __METHOD__ );
 439
 440         $feed->outHeader();
 441
 442         # Merge adjacent edits by one user
 443         $sorted = array();
 444         $n = 0;
 445         foreach( $rows as $obj ) {
 446                 if( $n > 0 &&
 447                         $obj->rc_namespace >= 0 &&
 448                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 449                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 450                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 451                 } else {
 452                         $sorted[$n] = $obj;
 453                         $n++;
 454                 }
 455         }
 456
 457         foreach( $sorted as $obj ) {
 458                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 459                 $talkpage = $title->getTalkPage();
 460                 $item = new FeedItem(
 461                         $title->getPrefixedText(),
 462                         rcFormatDiff( $obj ),
 463                         $title->getFullURL( 'diff=' . $obj->rc_this_oldid . '&oldid=prev' ),
 464                         $obj->rc_timestamp,
 465                         ($obj->rc_deleted & Revision::DELETED_USER) ? wfMsgHtml('rev-deleted-user') : $obj->rc_user_text,
 466                         $talkpage->getFullURL()
 467                         );
 468                 $feed->outItem( $item );
 469         }
 470         $feed->outFooter();
 471         wfProfileOut( __METHOD__ );
 472 }
 473
 474 /**
 475  *
 476  */
 477 function rcCountLink( $lim, $d, $page='Recentchanges', $more='', $active = false ) {
 478         global $wgUser, $wgLang, $wgContLang;
 479         $sk = $wgUser->getSkin();
 480         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 481           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 482           ($d ? "days={$d}&" : '') . 'limit='.$lim, '', '',
 483           $active ? 'style="font-weight: bold;"' : '' );
 484         return $s;
 485 }
 486
 487 /**
 488  *
 489  */
 490 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='', $active = false ) {
 491         global $wgUser, $wgLang, $wgContLang;
 492         $sk = $wgUser->getSkin();
 493         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 494           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 495           ($lim ? '&limit='.$lim : ''), '', '',
 496           $active ? 'style="font-weight: bold;"' : '' );
 497         return $s;
 498 }
 499
 500 /**
 501  * Used by Recentchangeslinked
 502  */
 503 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 504         $botLink = '', $liuLink = '', $patrLink = '', $myselfLink = '' ) {
 505         global $wgRCLinkLimits, $wgRCLinkDays;
 506         if ($more != '') $more .= '&';
 507
 508         # Sort data for display and make sure it's unique after we've added user data.
 509         # FIXME: why does this piss around with globals like this? Why is $limit added on globally?
 510         $wgRCLinkLimits[] = $limit;
 511         $wgRCLinkDays[] = $days;
 512         sort($wgRCLinkLimits);
 513         sort($wgRCLinkDays);
 514         $wgRCLinkLimits = array_unique($wgRCLinkLimits);
 515         $wgRCLinkDays = array_unique($wgRCLinkDays);
 516
 517         $cl = array();
 518         foreach( $wgRCLinkLimits as $countLink ) {
 519                 $cl[] = rcCountLink( $countLink, $days, $page, $more, $countLink == $limit );
 520         }
 521         if( $doall ) $cl[] = rcCountLink( 0, $days, $page, $more );
 522         $cl = implode( ' | ', $cl);
 523
 524         $dl = array();
 525         foreach( $wgRCLinkDays as $daysLink ) {
 526                 $dl[] = rcDaysLink( $limit, $daysLink, $page, $more, $daysLink == $days );
 527         }
 528         if( $doall ) $dl[] = rcDaysLink( $limit, 0, $page, $more );
 529         $dl = implode( ' | ', $dl);
 530
 531         $linkParts = array( 'minorLink' => 'minor', 'botLink' => 'bots', 'liuLink' => 'liu', 'patrLink' => 'patr', 'myselfLink' => 'mine' );
 532         foreach( $linkParts as $linkVar => $linkMsg ) {
 533                 if( $$linkVar != '' )
 534                         $links[] = wfMsgHtml( 'rcshowhide' . $linkMsg, $$linkVar );
 535         }
 536
 537         $shm = implode( ' | ', $links );
 538         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 539         return $note;
 540 }
 541
 542
 543 /**
 544  * Makes change an option link which carries all the other options
 545  * @param $title see Title
 546  * @param $override
 547  * @param $options
 548  */
 549 function makeOptionsLink( $title, $override, $options, $active = false ) {
 550         global $wgUser, $wgContLang;
 551         $sk = $wgUser->getSkin();
 552         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 553                 htmlspecialchars( $title ), wfArrayToCGI( $override, $options ), '', '',
 554                 $active ? 'style="font-weight: bold;"' : '' );
 555 }
 556
 557 /**
 558  * Creates the options panel.
 559  * @param $defaults
 560  * @param $nondefaults
 561  */
 562 function rcOptionsPanel( $defaults, $nondefaults ) {
 563         global $wgLang, $wgUser, $wgRCLinkLimits, $wgRCLinkDays;
 564
 565         $options = $nondefaults + $defaults;
 566
 567         if( $options['from'] )
 568                 $note = wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 569                         $wgLang->formatNum( $options['limit'] ),
 570                         $wgLang->timeanddate( $options['from'], true ) );
 571         else
 572                 $note = wfMsgExt( 'rcnote', array( 'parseinline' ),
 573                         $wgLang->formatNum( $options['limit'] ),
 574                         $wgLang->formatNum( $options['days'] ),
 575                         $wgLang->timeAndDate( wfTimestampNow(), true ) );
 576
 577         # Sort data for display and make sure it's unique after we've added user data.
 578         $wgRCLinkLimits[] = $options['limit'];
 579         $wgRCLinkDays[] = $options['days'];
 580         sort($wgRCLinkLimits);
 581         sort($wgRCLinkDays);
 582         $wgRCLinkLimits = array_unique($wgRCLinkLimits);
 583         $wgRCLinkDays = array_unique($wgRCLinkDays);
 584
 585         // limit links
 586         foreach( $wgRCLinkLimits as $value ) {
 587                 $cl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 588                         array( 'limit' => $value ), $nondefaults, $value == $options['limit'] ) ;
 589         }
 590         $cl = implode( ' | ', $cl);
 591
 592         // day links, reset 'from' to none
 593         foreach( $wgRCLinkDays as $value ) {
 594                 $dl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 595                         array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] ) ;
 596         }
 597         $dl = implode( ' | ', $dl);
 598
 599
 600         // show/hide links
 601         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 602         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 603                 array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 604         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 605                 array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 606         $anonsLink = makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 607                 array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 608         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 609                 array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 610         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 611                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 612         $myselfLink = makeOptionsLink( $showhide[1-$options['hidemyself']],
 613                 array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 614
 615         $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 616         $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 617         $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 618         $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 619         if( $wgUser->useRCPatrol() )
 620                 $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 621         $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 622         $hl = implode( ' | ', $links );
 623
 624         // show from this onward link
 625         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 626         $tl =  makeOptionsLink( $now, array( 'from' => wfTimestampNow()), $nondefaults );
 627
 628         $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter'),
 629                 $cl, $dl, $hl );
 630         $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter'), $tl );
 631         return "$note<br />$rclinks<br />$rclistfrom";
 632
 633 }
 634
 635 /**
 636  * Creates the choose namespace selection
 637  *
 638  * @private
 639  *
 640  * @param $namespace Mixed: the key of the currently selected namespace, empty string
 641  *              if there is none
 642  * @param $invert Bool: whether to invert the namespace selection
 643  * @param $nondefaults Array: an array of non default options to be remembered
 644  * @param $categories_any Bool: Default value for the checkbox
 645  *
 646  * @return string
 647  */
 648 function rcNamespaceForm( $namespace, $invert, $nondefaults, $categories_any ) {
 649         global $wgScript, $wgAllowCategorizedRecentChanges, $wgRequest;
 650         $t = SpecialPage::getTitleFor( 'Recentchanges' );
 651
 652         $namespaceselect = HTMLnamespaceselector($namespace, '');
 653         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . "\" />\n";
 654         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 655
 656         if ( $wgAllowCategorizedRecentChanges ) {
 657                 $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 658                 $cb_arr = array( 'type' => 'checkbox', 'name' => 'categories_any', 'value' => "1" ) ;
 659                 if ( $categories_any ) $cb_arr['checked'] = "checked" ;
 660                 $catbox = "<br />" ;
 661                 $catbox .= wfMsgExt('rc_categories', array('parseinline')) . " ";
 662                 $catbox .= wfElement('input', array( 'type' => 'text', 'name' => 'categories', 'value' => $categories));
 663                 $catbox .= " &nbsp;" ;
 664                 $catbox .= wfElement('input', $cb_arr );
 665                 $catbox .= wfMsgExt('rc_categories_any', array('parseinline'));
 666         } else {
 667                 $catbox = "" ;
 668         }
 669
 670         $out = "<div class='namespacesettings'><form method='get' action='{$wgScript}'>\n";
 671
 672         foreach ( $nondefaults as $key => $value ) {
 673                 if ($key != 'namespace' && $key != 'invert')
 674                         $out .= wfElement('input', array( 'type' => 'hidden', 'name' => $key, 'value' => $value));
 675         }
 676
 677         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 678         $out .= "
 679 <div id='nsselect' class='recentchanges'>
 680         <label for='namespace'>" . wfMsgHtml('namespace') . "</label>
 681         {$namespaceselect}{$submitbutton}{$invertbox} <label for='nsinvert'>" . wfMsgHtml('invert') . "</label>{$catbox}\n</div>";
 682         $out .= '</form></div>';
 683         return $out;
 684 }
 685
 686
 687 /**
 688  * Format a diff for the newsfeed
 689  */
 690 function rcFormatDiff( $row ) {
 691         global $wgUser;
 692
 693         $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 694         $timestamp = wfTimestamp( TS_MW, $row->rc_timestamp );
 695         $actiontext = '';
 696         if( $row->rc_type == RC_LOG ) {
 697                 if( $row->rc_deleted & LogPage::DELETED_ACTION ) {
 698                         $actiontext = wfMsgHtml('rev-deleted-event');
 699                 } else {
 700                         $actiontext = LogPage::actionText( $row->rc_log_type, $row->rc_log_action,
 701                                 $titleObj, $wgUser->getSkin(), LogPage::extractParams($row->rc_params,true,true) );
 702                 }
 703         }
 704         return rcFormatDiffRow( $titleObj,
 705                 $row->rc_last_oldid, $row->rc_this_oldid,
 706                 $timestamp,
 707                 ($row->rc_deleted & Revision::DELETED_COMMENT) ? wfMsgHtml('rev-deleted-comment') : $row->rc_comment,
 708                 $actiontext );
 709 }
 710
 711 function rcFormatDiffRow( $title, $oldid, $newid, $timestamp, $comment, $actiontext='' ) {
 712         global $wgFeedDiffCutoff, $wgContLang, $wgUser;
 713         $fname = 'rcFormatDiff';
 714         wfProfileIn( $fname );
 715
 716         $skin = $wgUser->getSkin();
 717         # log enties
 718         if( $actiontext ) {
 719                 $comment = "$actiontext $comment";
 720         }
 721         $completeText = '<p>' . $skin->formatComment( $comment ) . "</p>\n";
 722
 723         //NOTE: Check permissions for anonymous users, not current user.
 724         //      No "privileged" version should end up in the cache.
 725         //      Most feed readers will not log in anway.
 726         $anon = new User();
 727         $accErrors = $title->getUserPermissionsErrors( 'read', $anon, true );
 728
 729         if( $title->getNamespace() >= 0 && !$accErrors ) {
 730                 if( $oldid ) {
 731                         wfProfileIn( "$fname-dodiff" );
 732
 733                         $de = new DifferenceEngine( $title, $oldid, $newid );
 734                         #$diffText = $de->getDiff( wfMsg( 'revisionasof',
 735                         #       $wgContLang->timeanddate( $timestamp ) ),
 736                         #       wfMsg( 'currentrev' ) );
 737                         $diffText = $de->getDiff(
 738                                 wfMsg( 'previousrevision' ), // hack
 739                                 wfMsg( 'revisionasof',
 740                                         $wgContLang->timeanddate( $timestamp ) ) );
 741
 742
 743                         if ( strlen( $diffText ) > $wgFeedDiffCutoff ) {
 744                                 // Omit large diffs
 745                                 $diffLink = $title->escapeFullUrl(
 746                                         'diff=' . $newid .
 747                                         '&oldid=' . $oldid );
 748                                 $diffText = '<a href="' .
 749                                         $diffLink .
 750                                         '">' .
 751                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 752                                         '</a>';
 753                         } elseif ( $diffText === false ) {
 754                                 // Error in diff engine, probably a missing revision
 755                                 $diffText = "<p>Can't load revision $newid</p>";
 756                         } else {
 757                                 // Diff output fine, clean up any illegal UTF-8
 758                                 $diffText = UtfNormal::cleanUp( $diffText );
 759                                 $diffText = rcApplyDiffStyle( $diffText );
 760                         }
 761                         wfProfileOut( "$fname-dodiff" );
 762                 } else {
 763                         $rev = Revision::newFromId( $newid );
 764                         if( is_null( $rev ) ) {
 765                                 $newtext = '';
 766                         } else {
 767                                 $newtext = $rev->getText();
 768                         }
 769                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 770                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 771                 }
 772                 $completeText .= $diffText;
 773         }
 774
 775         wfProfileOut( $fname );
 776         return $completeText;
 777 }
 778
 779 /**
 780  * Hacky application of diff styles for the feeds.
 781  * Might be 'cleaner' to use DOM or XSLT or something,
 782  * but *gack* it's a pain in the ass.
 783  *
 784  * @param $text String:
 785  * @return string
 786  * @private
 787  */
 788 function rcApplyDiffStyle( $text ) {
 789         $styles = array(
 790                 'diff'             => 'background-color: white; color:black;',
 791                 'diff-otitle'      => 'background-color: white; color:black;',
 792                 'diff-ntitle'      => 'background-color: white; color:black;',
 793                 'diff-addedline'   => 'background: #cfc; color:black; font-size: smaller;',
 794                 'diff-deletedline' => 'background: #ffa; color:black; font-size: smaller;',
 795                 'diff-context'     => 'background: #eee; color:black; font-size: smaller;',
 796                 'diffchange'       => 'color: red; font-weight: bold; text-decoration: none;',
 797         );
 798
 799         foreach( $styles as $class => $style ) {
 800                 $text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
 801                         "\\1style=\"$style\"\\3", $text );
 802         }
 803
 804         return $text;
 805 }