includes/QueryPage.php

   1 <?php
   2 /**
   3  * Contain a class for special pages
   4  * @file
   5  * @ingroup SpecialPages
   6  */
   7
   8 /**
   9  * List of query page classes and their associated special pages,
  10  * for periodic updates.
  11  *
  12  * DO NOT CHANGE THIS LIST without testing that
  13  * maintenance/updateSpecialPages.php still works.
  14  */
  15 global $wgQueryPages; // not redundant
  16 $wgQueryPages = array(
  17 //         QueryPage subclass           Special page name         Limit (false for none, none for the default)
  18 //----------------------------------------------------------------------------
  19         array( 'AncientPagesPage',              'Ancientpages'                  ),
  20         array( 'BrokenRedirectsPage',           'BrokenRedirects'               ),
  21         array( 'DeadendPagesPage',              'Deadendpages'                  ),
  22         array( 'DisambiguationsPage',           'Disambiguations'               ),
  23         array( 'DoubleRedirectsPage',           'DoubleRedirects'               ),
  24         array( 'LinkSearchPage',                'LinkSearch'                    ),
  25         array( 'ListredirectsPage',             'Listredirects'                                 ),
  26         array( 'LonelyPagesPage',               'Lonelypages'                   ),
  27         array( 'LongPagesPage',                 'Longpages'                     ),
  28         array( 'MostcategoriesPage',            'Mostcategories'                ),
  29         array( 'MostimagesPage',                'Mostimages'                    ),
  30         array( 'MostlinkedCategoriesPage',      'Mostlinkedcategories'          ),
  31         array( 'SpecialMostlinkedtemplates',    'Mostlinkedtemplates'                   ),
  32         array( 'MostlinkedPage',                'Mostlinked'                    ),
  33         array( 'MostrevisionsPage',             'Mostrevisions'                 ),
  34         array( 'FewestrevisionsPage',           'Fewestrevisions'               ),
  35         array( 'ShortPagesPage',                'Shortpages'                    ),
  36         array( 'UncategorizedCategoriesPage',   'Uncategorizedcategories'       ),
  37         array( 'UncategorizedPagesPage',        'Uncategorizedpages'            ),
  38         array( 'UncategorizedImagesPage',       'Uncategorizedimages'                   ),
  39         array( 'UncategorizedTemplatesPage',    'Uncategorizedtemplates'                ),
  40         array( 'UnusedCategoriesPage',          'Unusedcategories'              ),
  41         array( 'UnusedimagesPage',              'Unusedimages'                  ),
  42         array( 'WantedCategoriesPage',          'Wantedcategories'              ),
  43         array( 'WantedFilesPage',               'Wantedfiles'                   ),
  44         array( 'WantedPagesPage',               'Wantedpages'                   ),
  45         array( 'WantedTemplatesPage',          'Wantedtemplates'              ),
  46         array( 'UnwatchedPagesPage',            'Unwatchedpages'                ),
  47         array( 'UnusedtemplatesPage',           'Unusedtemplates'                               ),
  48         array( 'WithoutInterwikiPage',                  'Withoutinterwiki'                              ),
  49 );
  50 wfRunHooks( 'wgQueryPages', array( &$wgQueryPages ) );
  51
  52 global $wgDisableCounters;
  53 if ( !$wgDisableCounters )
  54         $wgQueryPages[] = array( 'PopularPagesPage',            'Popularpages'          );
  55
  56
  57 /**
  58  * This is a class for doing query pages; since they're almost all the same,
  59  * we factor out some of the functionality into a superclass, and let
  60  * subclasses derive from it.
  61  * @ingroup SpecialPage
  62  */
  63 class QueryPage {
  64         /**
  65          * Whether or not we want plain listoutput rather than an ordered list
  66          *
  67          * @var bool
  68          */
  69         var $listoutput = false;
  70
  71         /**
  72          * The offset and limit in use, as passed to the query() function
  73          *
  74          * @var integer
  75          */
  76         var $offset = 0;
  77         var $limit = 0;
  78
  79         /**
  80          * A mutator for $this->listoutput;
  81          *
  82          * @param bool $bool
  83          */
  84         function setListoutput( $bool ) {
  85                 $this->listoutput = $bool;
  86         }
  87
  88         /**
  89          * Subclasses return their name here. Make sure the name is also
  90          * specified in SpecialPage.php and in Language.php as a language message
  91          * param.
  92          */
  93         function getName() {
  94                 return '';
  95         }
  96
  97         /**
  98          * Return title object representing this page
  99          *
 100          * @return Title
 101          */
 102         function getTitle() {
 103                 return SpecialPage::getTitleFor( $this->getName() );
 104         }
 105
 106         /**
 107          * Subclasses return an SQL query here.
 108          *
 109          * Note that the query itself should return the following four columns:
 110          * 'type' (your special page's name), 'namespace', 'title', and 'value'
 111          * *in that order*. 'value' is used for sorting.
 112          *
 113          * These may be stored in the querycache table for expensive queries,
 114          * and that cached data will be returned sometimes, so the presence of
 115          * extra fields can't be relied upon. The cached 'value' column will be
 116          * an integer; non-numeric values are useful only for sorting the initial
 117          * query.
 118          *
 119          * Don't include an ORDER or LIMIT clause, this will be added.
 120          */
 121         function getSQL() {
 122                 return "SELECT 'sample' as type, 0 as namespace, 'Sample result' as title, 42 as value";
 123         }
 124
 125         /**
 126          * Override to sort by increasing values
 127          */
 128         function sortDescending() {
 129                 return true;
 130         }
 131
 132         function getOrder() {
 133                 return ' ORDER BY value ' .
 134                         ($this->sortDescending() ? 'DESC' : '');
 135         }
 136
 137         /**
 138          * Is this query expensive (for some definition of expensive)? Then we
 139          * don't let it run in miser mode. $wgDisableQueryPages causes all query
 140          * pages to be declared expensive. Some query pages are always expensive.
 141          */
 142         function isExpensive( ) {
 143                 global $wgDisableQueryPages;
 144                 return $wgDisableQueryPages;
 145         }
 146
 147         /**
 148          * Whether or not the output of the page in question is retrived from
 149          * the database cache.
 150          *
 151          * @return bool
 152          */
 153         function isCached() {
 154                 global $wgMiserMode;
 155
 156                 return $this->isExpensive() && $wgMiserMode;
 157         }
 158
 159         /**
 160          * Sometime we dont want to build rss / atom feeds.
 161          */
 162         function isSyndicated() {
 163                 return true;
 164         }
 165
 166         /**
 167          * Formats the results of the query for display. The skin is the current
 168          * skin; you can use it for making links. The result is a single row of
 169          * result data. You should be able to grab SQL results off of it.
 170          * If the function return "false", the line output will be skipped.
 171          */
 172         function formatResult( $skin, $result ) {
 173                 return '';
 174         }
 175         /**
 176          * Formats the result as something that can be understood by the API.
 177          * Defaults to setting id, ns and title
 178          */
 179         function formatApiResult( $row ) {
 180                 $title = Title::makeTitle( $row->namespace, $row->title );
 181                 return array(
 182                         'ns' => intval( $title->getNamespace() ),
 183                         'title' => $title->getPrefixedText(),
 184                 );
 185         }
 186
 187         /**
 188          * The content returned by this function will be output before any result
 189          */
 190         function getPageHeader( ) {
 191                 return '';
 192         }
 193
 194         /**
 195          * If using extra form wheely-dealies, return a set of parameters here
 196          * as an associative array. They will be encoded and added to the paging
 197          * links (prev/next/lengths).
 198          * @return array
 199          */
 200         function linkParameters() {
 201                 return array();
 202         }
 203
 204         /**
 205          * Some special pages (for example SpecialListusers) might not return the
 206          * current object formatted, but return the previous one instead.
 207          * Setting this to return true, will call one more time wfFormatResult to
 208          * be sure that the very last result is formatted and shown.
 209          */
 210         function tryLastResult( ) {
 211                 return false;
 212         }
 213
 214         /**
 215          * Clear the cache and save new results
 216          */
 217         function recache( $limit, $ignoreErrors = true ) {
 218                 $fname = get_class( $this ) . '::recache';
 219                 $dbw = wfGetDB( DB_MASTER );
 220                 $dbr = wfGetDB( DB_SLAVE, array( $this->getName(), __METHOD__, 'vslow' ) );
 221                 if ( !$dbw || !$dbr ) {
 222                         return false;
 223                 }
 224
 225                 $querycache = $dbr->tableName( 'querycache' );
 226
 227                 if ( $ignoreErrors ) {
 228                         $ignoreW = $dbw->ignoreErrors( true );
 229                         $ignoreR = $dbr->ignoreErrors( true );
 230                 }
 231
 232                 # Clear out any old cached data
 233                 $dbw->delete( 'querycache', array( 'qc_type' => $this->getName() ), $fname );
 234                 # Do query
 235                 $sql = $this->getSQL() . $this->getOrder();
 236                 if ( $limit !== false )
 237                         $sql = $dbr->limitResult( $sql, $limit, 0 );
 238                 $res = $dbr->query( $sql, $fname );
 239                 $num = false;
 240                 if ( $res ) {
 241                         $num = $dbr->numRows( $res );
 242                         # Fetch results
 243                         $vals = array();
 244                         while ( $res && $row = $dbr->fetchObject( $res ) ) {
 245                                 if ( isset( $row->value ) ) {
 246                                         $value = intval( $row->value ); // @bug 14414
 247                                 } else {
 248                                         $value = 0;
 249                                 }
 250
 251                                 $vals[] = array('qc_type' => $row->type,
 252                                                 'qc_namespace' => $row->namespace,
 253                                                 'qc_title' => $row->title,
 254                                                 'qc_value' => $value);
 255                         }
 256
 257                         # Save results into the querycache table on the master
 258                         if ( count( $vals ) ) {
 259                                 if ( !$dbw->insert( 'querycache', $vals, __METHOD__ ) ) {
 260                                         // Set result to false to indicate error
 261                                         $dbr->freeResult( $res );
 262                                         $res = false;
 263                                 }
 264                         }
 265                         if ( $res ) {
 266                                 $dbr->freeResult( $res );
 267                         }
 268                         if ( $ignoreErrors ) {
 269                                 $dbw->ignoreErrors( $ignoreW );
 270                                 $dbr->ignoreErrors( $ignoreR );
 271                         }
 272
 273                         # Update the querycache_info record for the page
 274                         $dbw->delete( 'querycache_info', array( 'qci_type' => $this->getName() ), $fname );
 275                         $dbw->insert( 'querycache_info', array( 'qci_type' => $this->getName(), 'qci_timestamp' => $dbw->timestamp() ), $fname );
 276
 277                 }
 278                 return $num;
 279         }
 280
 281         /**
 282          * This is the actual workhorse. It does everything needed to make a
 283          * real, honest-to-gosh query page.
 284          *
 285          * @param $offset database query offset
 286          * @param $limit database query limit
 287          * @param $shownavigation show navigation like "next 200"?
 288          */
 289         function doQuery( $offset, $limit, $shownavigation=true ) {
 290                 global $wgUser, $wgOut, $wgLang, $wgContLang;
 291
 292                 $wgOut->setSyndicated( $this->isSyndicated() );
 293
 294                 # Really really do the query now
 295                 $result = $this->reallyDoQuery( $offset, $limit );
 296
 297                 # Tell about cachiness
 298                 if ( $result['cached'] !== false ) {
 299                         if ( $result['cached'] === true ) {
 300                                 $wgOut->addWikiMsg( 'perfcached' );
 301                         } else {
 302                                 $updated = $wgLang->timeAndDate( $result['cached'], true, true );
 303                                 $wgOut->addMeta( 'Data-Cache-Time', $result['cached'] );
 304                                 $wgOut->addInlineScript( "var dataCacheTime = '{$result['cached']}';" );
 305                                 $wgOut->addWikiMsg( 'perfcachedts', $updated );
 306                         }
 307                 }
 308                 if ( $result['disabled'] ) {
 309                         # If updates on this page have been disabled, let the user know
 310                         # that the data set won't be refreshed for now
 311
 312                         $wgOut->addWikiMsg( 'querypage-no-updates' );
 313                 }
 314
 315                 $wgOut->addHTML( XML::openElement( 'div', array('class' => 'mw-spcontent') ) );
 316
 317                 # Top header and navigation
 318                 if( $shownavigation ) {
 319                         $wgOut->addHTML( $this->getPageHeader() );
 320                         if( $result['count'] > 0 ) {
 321                                 $wgOut->addHTML( '<p>' . wfShowingResults( $offset, $result['count'] ) . '</p>' );
 322                                 # Disable the "next" link when we reach the end
 323                                 $paging = wfViewPrevNext( $offset, $limit, $wgContLang->specialPage( $this->getName() ),
 324                                         wfArrayToCGI( $this->linkParameters() ), ( $result['count'] < $limit ) );
 325                                 $wgOut->addHTML( '<p>' . $paging . '</p>' );
 326                         } else {
 327                                 # No results to show, so don't bother with "showing X of Y" etc.
 328                                 # -- just let the user know and give up now
 329                                 $wgOut->addHTML( '<p>' . wfMsgHtml( 'specialpage-empty' ) . '</p>' );
 330                                 $wgOut->addHTML( XML::closeElement( 'div' ) );
 331                                 return;
 332                         }
 333                 }
 334
 335                 # The actual results; specialist subclasses will want to handle this
 336                 # with more than a straight list, so we hand them the info, plus
 337                 # an OutputPage, and let them get on with it
 338                 $this->outputResults( $wgOut,
 339                         $wgUser->getSkin(),
 340                         $result['dbr'], # Should use a ResultWrapper for this
 341                         $result['result'],
 342                         $result['count'],
 343                         $offset );
 344
 345                 # Repeat the paging links at the bottom
 346                 if( $shownavigation ) {
 347                         $wgOut->addHTML( '<p>' . $paging . '</p>' );
 348                 }
 349
 350                 $wgOut->addHTML( XML::closeElement( 'div' ) );
 351
 352                 return $result['count'];
 353         }
 354
 355         /**
 356          * Really really do the query. Returns an array with:
 357          *              'disabled'      => true if the data will not be further refreshed,
 358          *              'cached'        => false if uncached, the timestamp of the last cache if known, else simply true,
 359          *              'result'        => the real result object,
 360          *              'count'         => number of results,
 361          *              'dbr'           => the database used for fetching the data
 362          */
 363         public function reallyDoQuery( $offset, $limit ) {
 364                 $result = array( 'disabled' => false );
 365
 366                 $this->offset = $offset;
 367                 $this->limit = $limit;
 368
 369                 $fname = get_class($this) . '::reallyDoQuery';
 370                 $dbr = wfGetDB( DB_SLAVE );
 371
 372
 373                 if ( !$this->isCached() ) {
 374                         $sql = $this->getSQL();
 375                         $result['cached'] = false;
 376                 } else {
 377                         # Get the cached result
 378                         $querycache = $dbr->tableName( 'querycache' );
 379                         $type = $dbr->strencode( $this->getName() );
 380                         $sql =
 381                                 "SELECT qc_type as type, qc_namespace as namespace,qc_title as title, qc_value as value
 382                                  FROM $querycache WHERE qc_type='$type'";
 383
 384                         if( !$this->listoutput ) {
 385
 386                                 # Fetch the timestamp of this update
 387                                 $tRes = $dbr->select( 'querycache_info', array( 'qci_timestamp' ), array( 'qci_type' => $type ), $fname );
 388                                 $tRow = $dbr->fetchObject( $tRes );
 389
 390                                 if( $tRow ) {
 391                                         $result['cached'] = $tRow->qci_timestamp;
 392                                 } else {
 393                                         $result['cached'] = true;
 394                                 }
 395
 396                                 # If updates on this page have been disabled, let the user know
 397                                 # that the data set won't be refreshed for now
 398                                 global $wgDisableQueryPageUpdate;
 399                                 if( is_array( $wgDisableQueryPageUpdate ) && in_array( $this->getName(), $wgDisableQueryPageUpdate ) ) {
 400                                         $result['disabled'] = true;
 401                                 }
 402                         }
 403
 404                 }
 405
 406                 $sql .= $this->getOrder();
 407                 $sql = $dbr->limitResult($sql, $limit, $offset);
 408                 $res = $dbr->query( $sql );
 409                 $num = $dbr->numRows($res);
 410
 411                 $this->preprocessResults( $dbr, $res );
 412
 413                 $result['result'] = $res;
 414                 $result['count'] = $num;
 415                 $result['dbr'] = $dbr;
 416                 return $result;
 417         }
 418
 419         /**
 420          * Format and output report results using the given information plus
 421          * OutputPage
 422          *
 423          * @param OutputPage $out OutputPage to print to
 424          * @param Skin $skin User skin to use
 425          * @param Database $dbr Database (read) connection to use
 426          * @param int $res Result pointer
 427          * @param int $num Number of available result rows
 428          * @param int $offset Paging offset
 429          */
 430         protected function outputResults( $out, $skin, $dbr, $res, $num, $offset ) {
 431                 global $wgContLang;
 432
 433                 if( $num > 0 ) {
 434                         $html = array();
 435                         if( !$this->listoutput )
 436                                 $html[] = $this->openList( $offset );
 437
 438                         # $res might contain the whole 1,000 rows, so we read up to
 439                         # $num [should update this to use a Pager]
 440                         for ( $i = 0; $i < $num && $row = $dbr->fetchObject( $res ); $i++ ) {
 441                                 $line = $this->formatResult( $skin, $row );
 442                                 if( $line ) {
 443                                         $attr = ( isset( $row->usepatrol ) && $row->usepatrol && $row->patrolled == 0 )
 444                                                 ? ' class="not-patrolled"'
 445                                                 : '';
 446                                         $html[] = $this->listoutput
 447                                                 ? $line
 448                                                 : "<li{$attr}>{$line}</li>\n";
 449                                 }
 450                         }
 451
 452                         # Flush the final result
 453                         if( $this->tryLastResult() ) {
 454                                 $row = null;
 455                                 $line = $this->formatResult( $skin, $row );
 456                                 if( $line ) {
 457                                         $attr = ( isset( $row->usepatrol ) && $row->usepatrol && $row->patrolled == 0 )
 458                                                 ? ' class="not-patrolled"'
 459                                                 : '';
 460                                         $html[] = $this->listoutput
 461                                                 ? $line
 462                                                 : "<li{$attr}>{$line}</li>\n";
 463                                 }
 464                         }
 465
 466                         if( !$this->listoutput )
 467                                 $html[] = $this->closeList();
 468
 469                         $html = $this->listoutput
 470                                 ? $wgContLang->listToText( $html )
 471                                 : implode( '', $html );
 472
 473                         $out->addHTML( $html );
 474                 }
 475         }
 476
 477
 478         function openList( $offset ) {
 479                 return "\n<ol start='" . ( $offset + 1 ) . "' class='special'>\n";
 480         }
 481
 482         function closeList() {
 483                 return "</ol>\n";
 484         }
 485
 486         /**
 487          * Do any necessary preprocessing of the result object.
 488          */
 489         function preprocessResults( $db, $res ) {}
 490
 491         /**
 492          * Similar to above, but packaging in a syndicated feed instead of a web page
 493          */
 494         function doFeed( $class = '', $limit = 50 ) {
 495                 global $wgFeed, $wgFeedClasses;
 496
 497                 if ( !$wgFeed ) {
 498                         global $wgOut;
 499                         $wgOut->addWikiMsg( 'feed-unavailable' );
 500                         return;
 501                 }
 502
 503                 global $wgFeedLimit;
 504                 if( $limit > $wgFeedLimit ) {
 505                         $limit = $wgFeedLimit;
 506                 }
 507
 508                 if( isset($wgFeedClasses[$class]) ) {
 509                         $feed = new $wgFeedClasses[$class](
 510                                 $this->feedTitle(),
 511                                 $this->feedDesc(),
 512                                 $this->feedUrl() );
 513                         $feed->outHeader();
 514
 515                         $dbr = wfGetDB( DB_SLAVE );
 516                         $sql = $this->getSQL() . $this->getOrder();
 517                         $sql = $dbr->limitResult( $sql, $limit, 0 );
 518                         $res = $dbr->query( $sql, 'QueryPage::doFeed' );
 519                         while( $obj = $dbr->fetchObject( $res ) ) {
 520                                 $item = $this->feedResult( $obj );
 521                                 if( $item ) $feed->outItem( $item );
 522                         }
 523                         $dbr->freeResult( $res );
 524
 525                         $feed->outFooter();
 526                         return true;
 527                 } else {
 528                         return false;
 529                 }
 530         }
 531
 532         /**
 533          * Override for custom handling. If the titles/links are ok, just do
 534          * feedItemDesc()
 535          */
 536         function feedResult( $row ) {
 537                 if( !isset( $row->title ) ) {
 538                         return NULL;
 539                 }
 540                 $title = Title::MakeTitle( intval( $row->namespace ), $row->title );
 541                 if( $title ) {
 542                         $date = isset( $row->timestamp ) ? $row->timestamp : '';
 543                         $comments = '';
 544                         if( $title ) {
 545                                 $talkpage = $title->getTalkPage();
 546                                 $comments = $talkpage->getFullURL();
 547                         }
 548
 549                         return new FeedItem(
 550                                 $title->getPrefixedText(),
 551                                 $this->feedItemDesc( $row ),
 552                                 $title->getFullURL(),
 553                                 $date,
 554                                 $this->feedItemAuthor( $row ),
 555                                 $comments);
 556                 } else {
 557                         return NULL;
 558                 }
 559         }
 560
 561         function feedItemDesc( $row ) {
 562                 return isset( $row->comment ) ? htmlspecialchars( $row->comment ) : '';
 563         }
 564
 565         function feedItemAuthor( $row ) {
 566                 return isset( $row->user_text ) ? $row->user_text : '';
 567         }
 568
 569         function feedTitle() {
 570                 global $wgContLanguageCode, $wgSitename;
 571                 $page = SpecialPage::getPage( $this->getName() );
 572                 $desc = $page->getDescription();
 573                 return "$wgSitename - $desc [$wgContLanguageCode]";
 574         }
 575
 576         function feedDesc() {
 577                 return wfMsgExt( 'tagline', 'parsemag' );
 578         }
 579
 580         function feedUrl() {
 581                 $title = SpecialPage::getTitleFor( $this->getName() );
 582                 return $title->getFullURL();
 583         }
 584 }
 585
 586 /**
 587  * Class definition for a wanted query page like
 588  * WantedPages, WantedTemplates, etc
 589  */
 590 abstract class WantedQueryPage extends QueryPage {
 591
 592         function isExpensive() {
 593                 return true;
 594         }
 595
 596         function isSyndicated() {
 597                 return false;
 598         }
 599
 600         /**
 601          * Cache page existence for performance
 602          */
 603         function preprocessResults( $db, $res ) {
 604                 $batch = new LinkBatch;
 605                 while ( $row = $db->fetchObject( $res ) )
 606                         $batch->add( $row->namespace, $row->title );
 607                 $batch->execute();
 608
 609                 // Back to start for display
 610                 if ( $db->numRows( $res ) > 0 )
 611                         // If there are no rows we get an error seeking.
 612                         $db->dataSeek( $res, 0 );
 613         }
 614
 615         /**
 616          * Format an individual result
 617          *
 618          * @param $skin Skin to use for UI elements
 619          * @param $result Result row
 620          * @return string
 621          */
 622         public function formatResult( $skin, $result ) {
 623                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
 624                 if( $title instanceof Title ) {
 625                         if( $this->isCached() ) {
 626                                 $pageLink = $title->exists()
 627                                         ? '<s>' . $skin->link( $title ) . '</s>'
 628                                         : $skin->link(
 629                                                 $title,
 630                                                 null,
 631                                                 array(),
 632                                                 array(),
 633                                                 array( 'broken' )
 634                                         );
 635                         } else {
 636                                 $pageLink = $skin->link(
 637                                         $title,
 638                                         null,
 639                                         array(),
 640                                         array(),
 641                                         array( 'broken' )
 642                                 );
 643                         }
 644                         return wfSpecialList( $pageLink, $this->makeWlhLink( $title, $skin, $result ) );
 645                 } else {
 646                         $tsafe = htmlspecialchars( $result->title );
 647                         return wfMsgHtml( 'wantedpages-badtitle', $tsafe );
 648                 }
 649         }
 650
 651         /**
 652          * Make a "what links here" link for a given title
 653          *
 654          * @param Title $title Title to make the link for
 655          * @param Skin $skin Skin to use
 656          * @param object $result Result row
 657          * @return string
 658          */
 659         private function makeWlhLink( $title, $skin, $result ) {
 660                 global $wgLang;
 661                 $wlh = SpecialPage::getTitleFor( 'Whatlinkshere' );
 662                 $label = wfMsgExt( 'nlinks', array( 'parsemag', 'escape' ),
 663                 $wgLang->formatNum( $result->value ) );
 664                 return $skin->link( $wlh, $label, array(), array( 'target' => $title->getPrefixedText() ) );
 665         }
 666 }