includes/CategoryPage.php

   1 <?php
   2 /**
   3  * Special handling for category description pages.
   4  * Modelled after ImagePage.php.
   5  *
   6  * @file
   7  */
   8
   9 if ( !defined( 'MEDIAWIKI' ) )
  10         die( 1 );
  11
  12 /**
  13  * Special handling for category description pages, showing pages,
  14  * subcategories and file that belong to the category
  15  */
  16 class CategoryPage extends Article {
  17         # Subclasses can change this to override the viewer class.
  18         protected $mCategoryViewerClass = 'CategoryViewer';
  19
  20         function view() {
  21                 global $wgRequest, $wgUser;
  22
  23                 $diff = $wgRequest->getVal( 'diff' );
  24                 $diffOnly = $wgRequest->getBool( 'diffonly', $wgUser->getOption( 'diffonly' ) );
  25
  26                 if ( isset( $diff ) && $diffOnly ) {
  27                         return parent::view();
  28                 }
  29
  30                 if ( !wfRunHooks( 'CategoryPageView', array( &$this ) ) ) {
  31                         return;
  32                 }
  33
  34                 if ( NS_CATEGORY == $this->mTitle->getNamespace() ) {
  35                         $this->openShowCategory();
  36                 }
  37
  38                 parent::view();
  39
  40                 if ( NS_CATEGORY == $this->mTitle->getNamespace() ) {
  41                         $this->closeShowCategory();
  42                 }
  43         }
  44
  45         /**
  46          * Don't return a 404 for categories in use.
  47          * In use defined as: either the actual page exists
  48          * or the category currently has members.
  49          */
  50         function hasViewableContent() {
  51                 if ( parent::hasViewableContent() ) {
  52                         return true;
  53                 } else {
  54                         $cat = Category::newFromTitle( $this->mTitle );
  55                         // If any of these are not 0, then has members
  56                         if ( $cat->getPageCount()
  57                                 || $cat->getSubcatCount()
  58                                 || $cat->getFileCount()
  59                         ) {
  60                                 return true;
  61                         }
  62                 }
  63                 return false;
  64         }
  65
  66         function openShowCategory() {
  67                 # For overloading
  68         }
  69
  70         function closeShowCategory() {
  71                 global $wgOut, $wgRequest;
  72
  73                 $from = $until = array();
  74                 foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
  75                         $from[$type] = $wgRequest->getVal( "{$type}from" );
  76                         $until[$type] = $wgRequest->getVal( "{$type}until" );
  77                 }
  78
  79                 $viewer = new $this->mCategoryViewerClass( $this->mTitle, $from, $until, $wgRequest->getValues() );
  80                 $wgOut->addHTML( $viewer->getHTML() );
  81         }
  82 }
  83
  84 class CategoryViewer {
  85         var $limit, $from, $until,
  86                 $articles, $articles_start_char,
  87                 $children, $children_start_char,
  88                 $showGallery, $imgsNoGalley,
  89                 $imgsNoGallery_start_char,
  90                 $skin, $imgsNoGallery;
  91
  92         /**
  93          * @var
  94          */
  95         var $nextPage;
  96
  97         /**
  98          * @var Array
  99          */
 100         var $flip;
 101
 102         /**
 103          * @var Title
 104          */
 105         var $title;
 106
 107         /**
 108          * @var Collation
 109          */
 110         var $collation;
 111
 112         /**
 113          * @var ImageGallery
 114          */
 115         var $gallery;
 116
 117         /**
 118          * Category object for this page
 119          * @var Category
 120          */
 121         private $cat;
 122
 123         /**
 124          * The original query array, to be used in generating paging links.
 125          * @var array
 126          */
 127         private $query;
 128
 129         function __construct( $title, $from = '', $until = '', $query = array() ) {
 130                 global $wgCategoryPagingLimit;
 131                 $this->title = $title;
 132                 $this->from = $from;
 133                 $this->until = $until;
 134                 $this->limit = $wgCategoryPagingLimit;
 135                 $this->cat = Category::newFromTitle( $title );
 136                 $this->query = $query;
 137                 $this->collation = Collation::singleton();
 138                 unset( $this->query['title'] );
 139         }
 140
 141         /**
 142          * Format the category data list.
 143          *
 144          * @return string HTML output
 145          */
 146         public function getHTML() {
 147                 global $wgOut, $wgCategoryMagicGallery, $wgContLang;
 148                 wfProfileIn( __METHOD__ );
 149
 150                 $this->showGallery = $wgCategoryMagicGallery && !$wgOut->mNoGallery;
 151
 152                 $this->clearCategoryState();
 153                 $this->doCategoryQuery();
 154                 $this->finaliseCategoryState();
 155
 156                 $r = $this->getSubcategorySection() .
 157                         $this->getPagesSection() .
 158                         $this->getImageSection();
 159
 160                 if ( $r == '' ) {
 161                         // If there is no category content to display, only
 162                         // show the top part of the navigation links.
 163                         // FIXME: cannot be completely suppressed because it
 164                         //        is unknown if 'until' or 'from' makes this
 165                         //        give 0 results.
 166                         $r = $r . $this->getCategoryTop();
 167                 } else {
 168                         $r = $this->getCategoryTop() .
 169                                 $r .
 170                                 $this->getCategoryBottom();
 171                 }
 172
 173                 // Give a proper message if category is empty
 174                 if ( $r == '' ) {
 175                         $r = wfMsgExt( 'category-empty', array( 'parse' ) );
 176                 }
 177
 178                 wfProfileOut( __METHOD__ );
 179                 return $wgContLang->convert( $r );
 180         }
 181
 182         function clearCategoryState() {
 183                 $this->articles = array();
 184                 $this->articles_start_char = array();
 185                 $this->children = array();
 186                 $this->children_start_char = array();
 187                 if ( $this->showGallery ) {
 188                         $this->gallery = new ImageGallery();
 189                         $this->gallery->setHideBadImages();
 190                 } else {
 191                         $this->imgsNoGallery = array();
 192                         $this->imgsNoGallery_start_char = array();
 193                 }
 194         }
 195
 196         /**
 197          * @return Skin
 198          */
 199         function getSkin() {
 200                 if ( !$this->skin ) {
 201                         global $wgUser;
 202                         $this->skin = $wgUser->getSkin();
 203                 }
 204                 return $this->skin;
 205         }
 206
 207         /**
 208          * Add a subcategory to the internal lists, using a Category object
 209          */
 210         function addSubcategoryObject( Category $cat, $sortkey, $pageLength ) {
 211                 // Subcategory; strip the 'Category' namespace from the link text.
 212                 $title = $cat->getTitle();
 213
 214                 $link = $this->getSkin()->link( $title, $title->getText() );
 215                 if ( $title->isRedirect() ) {
 216                         // This didn't used to add redirect-in-category, but might
 217                         // as well be consistent with the rest of the sections
 218                         // on a category page.
 219                         $link = '<span class="redirect-in-category">' . $link . '</span>';
 220                 }
 221                 $this->children[] = $link;
 222
 223                 $this->children_start_char[] =
 224                         $this->getSubcategorySortChar( $cat->getTitle(), $sortkey );
 225         }
 226
 227         /**
 228          * Add a subcategory to the internal lists, using a title object
 229          * @deprecated kept for compatibility, please use addSubcategoryObject instead
 230          */
 231         function addSubcategory( Title $title, $sortkey, $pageLength ) {
 232                 $this->addSubcategoryObject( Category::newFromTitle( $title ), $sortkey, $pageLength );
 233         }
 234
 235         /**
 236         * Get the character to be used for sorting subcategories.
 237         * If there's a link from Category:A to Category:B, the sortkey of the resulting
 238         * entry in the categorylinks table is Category:A, not A, which it SHOULD be.
 239         * Workaround: If sortkey == "Category:".$title, than use $title for sorting,
 240         * else use sortkey...
 241         *
 242         * @param Title $title
 243         * @param string $sortkey
 244         */
 245         function getSubcategorySortChar( $title, $sortkey ) {
 246                 global $wgContLang;
 247
 248                 if ( $title->getPrefixedText() == $sortkey ) {
 249                         $word = $title->getDBkey();
 250                 } else {
 251                         $word = $sortkey;
 252                 }
 253
 254                 $firstChar = $this->collation->getFirstLetter( $word );
 255
 256                 return $wgContLang->convert( $firstChar );
 257         }
 258
 259         /**
 260          * Add a page in the image namespace
 261          */
 262         function addImage( Title $title, $sortkey, $pageLength, $isRedirect = false ) {
 263                 global $wgContLang;
 264                 if ( $this->showGallery ) {
 265                         $flip = $this->flip['file'];
 266                         if ( $flip ) {
 267                                 $this->gallery->insert( $title );
 268                         } else {
 269                                 $this->gallery->add( $title );
 270                         }
 271                 } else {
 272                         $link = $this->getSkin()->link( $title );
 273                         if ( $isRedirect ) {
 274                                 // This seems kind of pointless given 'mw-redirect' class,
 275                                 // but keeping for back-compatibility with user css.
 276                                 $link = '<span class="redirect-in-category">' . $link . '</span>';
 277                         }
 278                         $this->imgsNoGallery[] = $link;
 279
 280                         $this->imgsNoGallery_start_char[] = $wgContLang->convert(
 281                                 $this->collation->getFirstLetter( $sortkey ) );
 282                 }
 283         }
 284
 285         /**
 286          * Add a miscellaneous page
 287          */
 288         function addPage( $title, $sortkey, $pageLength, $isRedirect = false ) {
 289                 global $wgContLang;
 290
 291                 $link = $this->getSkin()->link( $title );
 292                 if ( $isRedirect ) {
 293                         // This seems kind of pointless given 'mw-redirect' class,
 294                         // but keeping for back-compatiability with user css.
 295                         $link = '<span class="redirect-in-category">' . $link . '</span>';
 296                 }
 297                 $this->articles[] = $link;
 298
 299                 $this->articles_start_char[] = $wgContLang->convert(
 300                         $this->collation->getFirstLetter( $sortkey ) );
 301         }
 302
 303         function finaliseCategoryState() {
 304                 if ( $this->flip['subcat'] ) {
 305                         $this->children            = array_reverse( $this->children );
 306                         $this->children_start_char = array_reverse( $this->children_start_char );
 307                 }
 308                 if ( $this->flip['page'] ) {
 309                         $this->articles            = array_reverse( $this->articles );
 310                         $this->articles_start_char = array_reverse( $this->articles_start_char );
 311                 }
 312                 if ( !$this->showGallery && $this->flip['file'] ) {
 313                         $this->imgsNoGallery            = array_reverse( $this->imgsNoGallery );
 314                         $this->imgsNoGallery_start_char = array_reverse( $this->imgsNoGallery_start_char );
 315                 }
 316         }
 317
 318         function doCategoryQuery() {
 319                 $dbr = wfGetDB( DB_SLAVE, 'category' );
 320
 321                 $this->nextPage = array(
 322                         'page' => null,
 323                         'subcat' => null,
 324                         'file' => null,
 325                 );
 326                 $this->flip = array( 'page' => false, 'subcat' => false, 'file' => false );
 327
 328                 foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
 329                         # Get the sortkeys for start/end, if applicable.  Note that if
 330                         # the collation in the database differs from the one
 331                         # set in $wgCategoryCollation, pagination might go totally haywire.
 332                         $extraConds = array( 'cl_type' => $type );
 333                         if ( $this->from[$type] !== null ) {
 334                                 $extraConds[] = 'cl_sortkey >= '
 335                                         . $dbr->addQuotes( $this->collation->getSortKey( $this->from[$type] ) );
 336                         } elseif ( $this->until[$type] !== null ) {
 337                                 $extraConds[] = 'cl_sortkey < '
 338                                         . $dbr->addQuotes( $this->collation->getSortKey( $this->until[$type] ) );
 339                                 $this->flip[$type] = true;
 340                         }
 341
 342                         $res = $dbr->select(
 343                                 array( 'page', 'categorylinks', 'category' ),
 344                                 array( 'page_id', 'page_title', 'page_namespace', 'page_len',
 345                                         'page_is_redirect', 'cl_sortkey', 'cat_id', 'cat_title',
 346                                         'cat_subcats', 'cat_pages', 'cat_files', 'cl_sortkey_prefix' ),
 347                                 array( 'cl_to' => $this->title->getDBkey() ) + $extraConds,
 348                                 __METHOD__,
 349                                 array(
 350                                         'USE INDEX' => array( 'categorylinks' => 'cl_sortkey' ),
 351                                         'LIMIT' => $this->limit + 1,
 352                                         'ORDER BY' => $this->flip[$type] ? 'cl_sortkey DESC' : 'cl_sortkey',
 353                                 ),
 354                                 array(
 355                                         'categorylinks'  => array( 'INNER JOIN', 'cl_from = page_id' ),
 356                                         'category' => array( 'LEFT JOIN', 'cat_title = page_title AND page_namespace = ' . NS_CATEGORY )
 357                                 )
 358                         );
 359
 360                         $count = 0;
 361                         foreach ( $res as $row ) {
 362                                 $title = Title::newFromRow( $row );
 363                                 $rawSortkey = $row->cl_sortkey;
 364
 365                                 if ( ++$count > $this->limit ) {
 366                                         # We've reached the one extra which shows that there
 367                                         # are additional pages to be had. Stop here...
 368                                         $this->nextPage[$type] = $rawSortkey;
 369                                         break;
 370                                 }
 371
 372                                 if ( $title->getNamespace() == NS_CATEGORY ) {
 373                                         $cat = Category::newFromRow( $row, $title );
 374                                         $this->addSubcategoryObject( $cat, $rawSortkey, $row->page_len );
 375                                 } elseif ( $title->getNamespace() == NS_FILE ) {
 376                                         $this->addImage( $title, $rawSortkey, $row->page_len, $row->page_is_redirect );
 377                                 } else {
 378                                         $this->addPage( $title, $rawSortkey, $row->page_len, $row->page_is_redirect );
 379                                 }
 380                         }
 381                 }
 382         }
 383
 384         function getCategoryTop() {
 385                 $r = $this->getCategoryBottom();
 386                 return $r === ''
 387                         ? $r
 388                         : "<br style=\"clear:both;\"/>\n" . $r;
 389         }
 390
 391         function getSubcategorySection() {
 392                 # Don't show subcategories section if there are none.
 393                 $r = '';
 394                 $rescnt = count( $this->children );
 395                 $dbcnt = $this->cat->getSubcatCount();
 396                 $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'subcat' );
 397
 398                 if ( $rescnt > 0 ) {
 399                         # Showing subcategories
 400                         $r .= "<div id=\"mw-subcategories\">\n";
 401                         $r .= '<h2>' . wfMsg( 'subcategories' ) . "</h2>\n";
 402                         $r .= $countmsg;
 403                         $r .= $this->getSectionPagingLinks( 'subcat' );
 404                         $r .= $this->formatList( $this->children, $this->children_start_char );
 405                         $r .= $this->getSectionPagingLinks( 'subcat' );
 406                         $r .= "\n</div>";
 407                 }
 408                 return $r;
 409         }
 410
 411         function getPagesSection() {
 412                 $ti = htmlspecialchars( $this->title->getText() );
 413                 # Don't show articles section if there are none.
 414                 $r = '';
 415
 416                 # FIXME, here and in the other two sections: we don't need to bother
 417                 # with this rigamarole if the entire category contents fit on one page
 418                 # and have already been retrieved.  We can just use $rescnt in that
 419                 # case and save a query and some logic.
 420                 $dbcnt = $this->cat->getPageCount() - $this->cat->getSubcatCount()
 421                         - $this->cat->getFileCount();
 422                 $rescnt = count( $this->articles );
 423                 $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'article' );
 424
 425                 if ( $rescnt > 0 ) {
 426                         $r = "<div id=\"mw-pages\">\n";
 427                         $r .= '<h2>' . wfMsg( 'category_header', $ti ) . "</h2>\n";
 428                         $r .= $countmsg;
 429                         $r .= $this->getSectionPagingLinks( 'page' );
 430                         $r .= $this->formatList( $this->articles, $this->articles_start_char );
 431                         $r .= $this->getSectionPagingLinks( 'page' );
 432                         $r .= "\n</div>";
 433                 }
 434                 return $r;
 435         }
 436
 437         function getImageSection() {
 438                 $r = '';
 439                 $rescnt = $this->showGallery ? $this->gallery->count() : count( $this->imgsNoGallery );
 440                 if ( $rescnt > 0 ) {
 441                         $dbcnt = $this->cat->getFileCount();
 442                         $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'file' );
 443
 444                         $r .= "<div id=\"mw-category-media\">\n";
 445                         $r .= '<h2>' . wfMsg( 'category-media-header', htmlspecialchars( $this->title->getText() ) ) . "</h2>\n";
 446                         $r .= $countmsg;
 447                         $r .= $this->getSectionPagingLinks( 'file' );
 448                         if ( $this->showGallery ) {
 449                                 $r .= $this->gallery->toHTML();
 450                         } else {
 451                                 $r .= $this->formatList( $this->imgsNoGallery, $this->imgsNoGallery_start_char );
 452                         }
 453                         $r .= $this->getSectionPagingLinks( 'file' );
 454                         $r .= "\n</div>";
 455                 }
 456                 return $r;
 457         }
 458
 459         /**
 460          * Get the paging links for a section (subcats/pages/files), to go at the top and bottom
 461          * of the output.
 462          *
 463          * @param $type String: 'page', 'subcat', or 'file'
 464          * @return String: HTML output, possibly empty if there are no other pages
 465          */
 466         private function getSectionPagingLinks( $type ) {
 467                 if ( $this->until[$type] !== null ) {
 468                         return $this->pagingLinks( $this->nextPage[$type], $this->until[$type], $type );
 469                 } elseif ( $this->nextPage[$type] !== null || $this->from[$type] !== null ) {
 470                         return $this->pagingLinks( $this->from[$type], $this->nextPage[$type], $type );
 471                 } else {
 472                         return '';
 473                 }
 474         }
 475
 476         function getCategoryBottom() {
 477                 return '';
 478         }
 479
 480         /**
 481          * Format a list of articles chunked by letter, either as a
 482          * bullet list or a columnar format, depending on the length.
 483          *
 484          * @param $articles Array
 485          * @param $articles_start_char Array
 486          * @param $cutoff Int
 487          * @return String
 488          * @private
 489          */
 490         function formatList( $articles, $articles_start_char, $cutoff = 6 ) {
 491                 if ( count ( $articles ) > $cutoff ) {
 492                         return self::columnList( $articles, $articles_start_char );
 493                 } elseif ( count( $articles ) > 0 ) {
 494                         // for short lists of articles in categories.
 495                         return self::shortList( $articles, $articles_start_char );
 496                 }
 497                 return '';
 498         }
 499
 500         /**
 501          * Format a list of articles chunked by letter in a three-column
 502          * list, ordered vertically.
 503          *
 504          * TODO: Take the headers into account when creating columns, so they're
 505          * more visually equal.
 506          *
 507          * More distant TODO: Scrap this and use CSS columns, whenever IE finally
 508          * supports those.
 509          *
 510          * @param $articles Array
 511          * @param $articles_start_char Array
 512          * @return String
 513          * @private
 514          */
 515         static function columnList( $articles, $articles_start_char ) {
 516                 $columns = array_combine( $articles, $articles_start_char );
 517                 # Split into three columns
 518                 $columns = array_chunk( $columns, ceil( count( $columns ) / 3 ), true /* preserve keys */ );
 519
 520                 $ret = '<table width="100%"><tr valign="top"><td>';
 521                 $prevchar = null;
 522
 523                 foreach ( $columns as $column ) {
 524                         $colContents = array();
 525
 526                         # Kind of like array_flip() here, but we keep duplicates in an
 527                         # array instead of dropping them.
 528                         foreach ( $column as $article => $char ) {
 529                                 if ( !isset( $colContents[$char] ) ) {
 530                                         $colContents[$char] = array();
 531                                 }
 532                                 $colContents[$char][] = $article;
 533                         }
 534
 535                         $first = true;
 536                         foreach ( $colContents as $char => $articles ) {
 537                                 $ret .= '<h3>' . htmlspecialchars( $char );
 538                                 if ( $first && $char === $prevchar ) {
 539                                         # We're continuing a previous chunk at the top of a new
 540                                         # column, so add " cont." after the letter.
 541                                         $ret .= ' ' . wfMsgHtml( 'listingcontinuesabbrev' );
 542                                 }
 543                                 $ret .= "</h3>\n";
 544
 545                                 $ret .= '<ul><li>';
 546                                 $ret .= implode( "</li>\n<li>", $articles );
 547                                 $ret .= '</li></ul>';
 548
 549                                 $first = false;
 550                                 $prevchar = $char;
 551                         }
 552
 553                         $ret .= "</td>\n<td>";
 554                 }
 555
 556                 $ret .= '</td></tr></table>';
 557                 return $ret;
 558         }
 559
 560         /**
 561          * Format a list of articles chunked by letter in a bullet list.
 562          * @param $articles Array
 563          * @param $articles_start_char Array
 564          * @return String
 565          * @private
 566          */
 567         static function shortList( $articles, $articles_start_char ) {
 568                 $r = '<h3>' . htmlspecialchars( $articles_start_char[0] ) . "</h3>\n";
 569                 $r .= '<ul><li>' . $articles[0] . '</li>';
 570                 for ( $index = 1; $index < count( $articles ); $index++ ) {
 571                         if ( $articles_start_char[$index] != $articles_start_char[$index - 1] ) {
 572                                 $r .= "</ul><h3>" . htmlspecialchars( $articles_start_char[$index] ) . "</h3>\n<ul>";
 573                         }
 574
 575                         $r .= "<li>{$articles[$index]}</li>";
 576                 }
 577                 $r .= '</ul>';
 578                 return $r;
 579         }
 580
 581         /**
 582          * Create paging links, as a helper method to getSectionPagingLinks().
 583          *
 584          * @param $first String The 'until' parameter for the generated URL
 585          * @param $last String The 'from' parameter for the genererated URL
 586          * @param $type String A prefix for parameters, 'page' or 'subcat' or
 587          *     'file'
 588          * @return String HTML
 589          */
 590         private function pagingLinks( $first, $last, $type = '' ) {
 591                 global $wgLang;
 592                 $sk = $this->getSkin();
 593                 $limitText = $wgLang->formatNum( $this->limit );
 594
 595                 $prevLink = wfMsgExt( 'prevn', array( 'escape', 'parsemag' ), $limitText );
 596
 597                 if ( $first != '' ) {
 598                         $prevQuery = $this->query;
 599                         $prevQuery["{$type}until"] = $first;
 600                         unset( $prevQuery["{$type}from"] );
 601                         $prevLink = $sk->linkKnown(
 602                                 $this->title,
 603                                 $prevLink,
 604                                 array(),
 605                                 $prevQuery
 606                         );
 607                 }
 608
 609                 $nextLink = wfMsgExt( 'nextn', array( 'escape', 'parsemag' ), $limitText );
 610
 611                 if ( $last != '' ) {
 612                         $lastQuery = $this->query;
 613                         $lastQuery["{$type}from"] = $last;
 614                         unset( $lastQuery["{$type}until"] );
 615                         $nextLink = $sk->linkKnown(
 616                                 $this->title,
 617                                 $nextLink,
 618                                 array(),
 619                                 $lastQuery
 620                         );
 621                 }
 622
 623                 return "($prevLink) ($nextLink)";
 624         }
 625
 626         /**
 627          * What to do if the category table conflicts with the number of results
 628          * returned?  This function says what. Each type is considered independently
 629          * of the other types.
 630          *
 631          * Note for grepping: uses the messages category-article-count,
 632          * category-article-count-limited, category-subcat-count,
 633          * category-subcat-count-limited, category-file-count,
 634          * category-file-count-limited.
 635          *
 636          * @param $rescnt Int: The number of items returned by our database query.
 637          * @param $dbcnt Int: The number of items according to the category table.
 638          * @param $type String: 'subcat', 'article', or 'file'
 639          * @return String: A message giving the number of items, to output to HTML.
 640          */
 641         private function getCountMessage( $rescnt, $dbcnt, $type ) {
 642                 global $wgLang;
 643                 # There are three cases:
 644                 #   1) The category table figure seems sane.  It might be wrong, but
 645                 #      we can't do anything about it if we don't recalculate it on ev-
 646                 #      ery category view.
 647                 #   2) The category table figure isn't sane, like it's smaller than the
 648                 #      number of actual results, *but* the number of results is less
 649                 #      than $this->limit and there's no offset.  In this case we still
 650                 #      know the right figure.
 651                 #   3) We have no idea.
 652
 653                 # Check if there's a "from" or "until" for anything
 654
 655                 // This is a little ugly, but we seem to use different names
 656                 // for the paging types then for the messages.
 657                 if ( $type === 'article' ) {
 658                         $pagingType = 'page';
 659                 } else {
 660                         $pagingType = $type;
 661                 }
 662
 663                 $fromOrUntil = false;
 664                 if ( $this->from[$pagingType] !== null || $this->until[$pagingType] !== null ) {
 665                         $fromOrUntil = true;
 666                 }
 667
 668                 if ( $dbcnt == $rescnt || ( ( $rescnt == $this->limit || $fromOrUntil )
 669                         && $dbcnt > $rescnt ) ) {
 670                         # Case 1: seems sane.
 671                         $totalcnt = $dbcnt;
 672                 } elseif ( $rescnt < $this->limit && !$fromOrUntil ) {
 673                         # Case 2: not sane, but salvageable.  Use the number of results.
 674                         # Since there are fewer than 200, we can also take this opportunity
 675                         # to refresh the incorrect category table entry -- which should be
 676                         # quick due to the small number of entries.
 677                         $totalcnt = $rescnt;
 678                         $this->cat->refreshCounts();
 679                 } else {
 680                         # Case 3: hopeless.  Don't give a total count at all.
 681                         return wfMsgExt( "category-$type-count-limited", 'parse',
 682                                 $wgLang->formatNum( $rescnt ) );
 683                 }
 684                 return wfMsgExt(
 685                         "category-$type-count",
 686                         'parse',
 687                         $wgLang->formatNum( $rescnt ),
 688                         $wgLang->formatNum( $totalcnt )
 689                 );
 690         }
 691 }