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 $title, $limit, $from, $until,
  86                 $articles, $articles_start_char,
  87                 $children, $children_start_char,
  88                 $showGallery, $gallery,
  89                 $imgsNoGalley, $imgsNoGallery_start_char,
  90                 $skin, $collation;
  91         # Category object for this page
  92         private $cat;
  93         # The original query array, to be used in generating paging links.
  94         private $query;
  95
  96         function __construct( $title, $from = '', $until = '', $query = array() ) {
  97                 global $wgCategoryPagingLimit;
  98                 $this->title = $title;
  99                 $this->from = $from;
 100                 $this->until = $until;
 101                 $this->limit = $wgCategoryPagingLimit;
 102                 $this->cat = Category::newFromTitle( $title );
 103                 $this->query = $query;
 104                 $this->collation = Collation::singleton();
 105                 unset( $this->query['title'] );
 106         }
 107
 108         /**
 109          * Format the category data list.
 110          *
 111          * @return string HTML output
 112          */
 113         public function getHTML() {
 114                 global $wgOut, $wgCategoryMagicGallery, $wgContLang;
 115                 wfProfileIn( __METHOD__ );
 116
 117                 $this->showGallery = $wgCategoryMagicGallery && !$wgOut->mNoGallery;
 118
 119                 $this->clearCategoryState();
 120                 $this->doCategoryQuery();
 121                 $this->finaliseCategoryState();
 122
 123                 $r = $this->getSubcategorySection() .
 124                         $this->getPagesSection() .
 125                         $this->getImageSection();
 126
 127                 if ( $r == '' ) {
 128                         // If there is no category content to display, only
 129                         // show the top part of the navigation links.
 130                         // FIXME: cannot be completely suppressed because it
 131                         //        is unknown if 'until' or 'from' makes this
 132                         //        give 0 results.
 133                         $r = $r . $this->getCategoryTop();
 134                 } else {
 135                         $r = $this->getCategoryTop() .
 136                                 $r .
 137                                 $this->getCategoryBottom();
 138                 }
 139
 140                 // Give a proper message if category is empty
 141                 if ( $r == '' ) {
 142                         $r = wfMsgExt( 'category-empty', array( 'parse' ) );
 143                 }
 144
 145                 wfProfileOut( __METHOD__ );
 146                 return $wgContLang->convert( $r );
 147         }
 148
 149         function clearCategoryState() {
 150                 $this->articles = array();
 151                 $this->articles_start_char = array();
 152                 $this->children = array();
 153                 $this->children_start_char = array();
 154                 if ( $this->showGallery ) {
 155                         $this->gallery = new ImageGallery();
 156                         $this->gallery->setHideBadImages();
 157                 } else {
 158                         $this->imgsNoGallery = array();
 159                         $this->imgsNoGallery_start_char = array();
 160                 }
 161         }
 162
 163         function getSkin() {
 164                 if ( !$this->skin ) {
 165                         global $wgUser;
 166                         $this->skin = $wgUser->getSkin();
 167                 }
 168                 return $this->skin;
 169         }
 170
 171         /**
 172          * Add a subcategory to the internal lists, using a Category object
 173          */
 174         function addSubcategoryObject( Category $cat, $sortkey, $pageLength ) {
 175                 // Subcategory; strip the 'Category' namespace from the link text.
 176                 $title = $cat->getTitle();
 177
 178                 $link = $this->getSkin()->link( $title, $title->getText() );
 179                 if ( $title->isRedirect() ) {
 180                         // This didn't used to add redirect-in-category, but might
 181                         // as well be consistent with the rest of the sections
 182                         // on a category page.
 183                         $link = '<span class="redirect-in-category">' . $link . '</span>';
 184                 }
 185                 $this->children[] = $link;
 186
 187                 $this->children_start_char[] =
 188                         $this->getSubcategorySortChar( $cat->getTitle(), $sortkey );
 189         }
 190
 191         /**
 192          * Add a subcategory to the internal lists, using a title object
 193          * @deprecated kept for compatibility, please use addSubcategoryObject instead
 194          */
 195         function addSubcategory( Title $title, $sortkey, $pageLength ) {
 196                 $this->addSubcategoryObject( Category::newFromTitle( $title ), $sortkey, $pageLength );
 197         }
 198
 199         /**
 200         * Get the character to be used for sorting subcategories.
 201         * If there's a link from Category:A to Category:B, the sortkey of the resulting
 202         * entry in the categorylinks table is Category:A, not A, which it SHOULD be.
 203         * Workaround: If sortkey == "Category:".$title, than use $title for sorting,
 204         * else use sortkey...
 205         *
 206         * @param Title $title
 207         * @param string $sortkey The human-readable sortkey (before transforming to icu or whatever).
 208         */
 209         function getSubcategorySortChar( $title, $sortkey ) {
 210                 global $wgContLang;
 211
 212                 if ( $title->getPrefixedText() == $sortkey ) {
 213                         $word = $title->getDBkey();
 214                 } else {
 215                         $word = $sortkey;
 216                 }
 217
 218                 $firstChar = $this->collation->getFirstLetter( $word );
 219
 220                 return $wgContLang->convert( $firstChar );
 221         }
 222
 223         /**
 224          * Add a page in the image namespace
 225          */
 226         function addImage( Title $title, $sortkey, $pageLength, $isRedirect = false ) {
 227                 global $wgContLang;
 228                 if ( $this->showGallery ) {
 229                         $flip = $this->flip['file'];
 230                         if ( $flip ) {
 231                                 $this->gallery->insert( $title );
 232                         } else {
 233                                 $this->gallery->add( $title );
 234                         }
 235                 } else {
 236                         $link = $this->getSkin()->link( $title );
 237                         if ( $isRedirect ) {
 238                                 // This seems kind of pointless given 'mw-redirect' class,
 239                                 // but keeping for back-compatibility with user css.
 240                                 $link = '<span class="redirect-in-category">' . $link . '</span>';
 241                         }
 242                         $this->imgsNoGallery[] = $link;
 243
 244                         $this->imgsNoGallery_start_char[] = $wgContLang->convert(
 245                                 $this->collation->getFirstLetter( $sortkey ) );
 246                 }
 247         }
 248
 249         /**
 250          * Add a miscellaneous page
 251          */
 252         function addPage( $title, $sortkey, $pageLength, $isRedirect = false ) {
 253                 global $wgContLang;
 254
 255                 $link = $this->getSkin()->link( $title );
 256                 if ( $isRedirect ) {
 257                         // This seems kind of pointless given 'mw-redirect' class,
 258                         // but keeping for back-compatiability with user css.
 259                         $link = '<span class="redirect-in-category">' . $link . '</span>';
 260                 }
 261                 $this->articles[] = $link;
 262
 263                 $this->articles_start_char[] = $wgContLang->convert(
 264                         $this->collation->getFirstLetter( $sortkey ) );
 265         }
 266
 267         function finaliseCategoryState() {
 268                 if ( $this->flip['subcat'] ) {
 269                         $this->children            = array_reverse( $this->children );
 270                         $this->children_start_char = array_reverse( $this->children_start_char );
 271                 }
 272                 if ( $this->flip['page'] ) {
 273                         $this->articles            = array_reverse( $this->articles );
 274                         $this->articles_start_char = array_reverse( $this->articles_start_char );
 275                 }
 276                 if ( !$this->showGallery && $this->flip['file'] ) {
 277                         $this->imgsNoGallery            = array_reverse( $this->imgsNoGallery );
 278                         $this->imgsNoGallery_start_char = array_reverse( $this->imgsNoGallery_start_char );
 279                 }
 280         }
 281
 282         function doCategoryQuery() {
 283                 $dbr = wfGetDB( DB_SLAVE, 'category' );
 284
 285                 $this->nextPage = array(
 286                         'page' => null,
 287                         'subcat' => null,
 288                         'file' => null,
 289                 );
 290                 $this->flip = array( 'page' => false, 'subcat' => false, 'file' => false );
 291
 292                 foreach ( array( 'page', 'subcat', 'file' ) as $type ) {
 293                         # Get the sortkeys for start/end, if applicable.  Note that if
 294                         # the collation in the database differs from the one
 295                         # set in $wgCategoryCollation, pagination might go totally haywire.
 296                         $extraConds = array( 'cl_type' => $type );
 297                         if ( $this->from[$type] !== null ) {
 298                                 $extraConds[] = 'cl_sortkey >= '
 299                                         . $dbr->addQuotes( $this->collation->getSortKey( $this->from[$type] ) );
 300                         } elseif ( $this->until[$type] !== null ) {
 301                                 $extraConds[] = 'cl_sortkey < '
 302                                         . $dbr->addQuotes( $this->collation->getSortKey( $this->until[$type] ) );
 303                                 $this->flip[$type] = true;
 304                         }
 305
 306                         $res = $dbr->select(
 307                                 array( 'page', 'categorylinks', 'category' ),
 308                                 array( 'page_id', 'page_title', 'page_namespace', 'page_len',
 309                                         'page_is_redirect', 'cl_sortkey', 'cat_id', 'cat_title',
 310                                         'cat_subcats', 'cat_pages', 'cat_files',
 311                                         'cl_sortkey_prefix', 'cl_collation' ),
 312                                 array( 'cl_to' => $this->title->getDBkey() ) + $extraConds,
 313                                 __METHOD__,
 314                                 array(
 315                                         'USE INDEX' => array( 'categorylinks' => 'cl_sortkey' ),
 316                                         'LIMIT' => $this->limit + 1,
 317                                         'ORDER BY' => $this->flip[$type] ? 'cl_sortkey DESC' : 'cl_sortkey',
 318                                 ),
 319                                 array(
 320                                         'categorylinks'  => array( 'INNER JOIN', 'cl_from = page_id' ),
 321                                         'category' => array( 'LEFT JOIN', 'cat_title = page_title AND page_namespace = ' . NS_CATEGORY )
 322                                 )
 323                         );
 324
 325                         $count = 0;
 326                         foreach ( $res as $row ) {
 327                                 $title = Title::newFromRow( $row );
 328                                 if ( $row->cl_collation === '' ) {
 329                                         // Hack to make sure that while updating from 1.16 schema
 330                                         // and db is inconsistent, that the sky doesn't fall.
 331                                         // See r83544. Could perhaps be removed in a couple decades...
 332                                         $humanSortkey = $row->cl_sortkey;
 333                                 } else {
 334                                         $humanSortkey = $title->getCategorySortkey( $row->cl_sortkey_prefix );
 335                                 }
 336
 337                                 if ( ++$count > $this->limit ) {
 338                                         # We've reached the one extra which shows that there
 339                                         # are additional pages to be had. Stop here...
 340                                         $this->nextPage[$type] = $humanSortkey;
 341                                         break;
 342                                 }
 343
 344                                 if ( $title->getNamespace() == NS_CATEGORY ) {
 345                                         $cat = Category::newFromRow( $row, $title );
 346                                         $this->addSubcategoryObject( $cat, $humanSortkey, $row->page_len );
 347                                 } elseif ( $title->getNamespace() == NS_FILE ) {
 348                                         $this->addImage( $title, $humanSortkey, $row->page_len, $row->page_is_redirect );
 349                                 } else {
 350                                         $this->addPage( $title, $humanSortkey, $row->page_len, $row->page_is_redirect );
 351                                 }
 352                         }
 353                 }
 354         }
 355
 356         function getCategoryTop() {
 357                 $r = $this->getCategoryBottom();
 358                 return $r === ''
 359                         ? $r
 360                         : "<br style=\"clear:both;\"/>\n" . $r;
 361         }
 362
 363         function getSubcategorySection() {
 364                 # Don't show subcategories section if there are none.
 365                 $r = '';
 366                 $rescnt = count( $this->children );
 367                 $dbcnt = $this->cat->getSubcatCount();
 368                 $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'subcat' );
 369
 370                 if ( $rescnt > 0 ) {
 371                         # Showing subcategories
 372                         $r .= "<div id=\"mw-subcategories\">\n";
 373                         $r .= '<h2>' . wfMsg( 'subcategories' ) . "</h2>\n";
 374                         $r .= $countmsg;
 375                         $r .= $this->getSectionPagingLinks( 'subcat' );
 376                         $r .= $this->formatList( $this->children, $this->children_start_char );
 377                         $r .= $this->getSectionPagingLinks( 'subcat' );
 378                         $r .= "\n</div>";
 379                 }
 380                 return $r;
 381         }
 382
 383         function getPagesSection() {
 384                 $ti = htmlspecialchars( $this->title->getText() );
 385                 # Don't show articles section if there are none.
 386                 $r = '';
 387
 388                 # FIXME, here and in the other two sections: we don't need to bother
 389                 # with this rigamarole if the entire category contents fit on one page
 390                 # and have already been retrieved.  We can just use $rescnt in that
 391                 # case and save a query and some logic.
 392                 $dbcnt = $this->cat->getPageCount() - $this->cat->getSubcatCount()
 393                         - $this->cat->getFileCount();
 394                 $rescnt = count( $this->articles );
 395                 $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'article' );
 396
 397                 if ( $rescnt > 0 ) {
 398                         $r = "<div id=\"mw-pages\">\n";
 399                         $r .= '<h2>' . wfMsg( 'category_header', $ti ) . "</h2>\n";
 400                         $r .= $countmsg;
 401                         $r .= $this->getSectionPagingLinks( 'page' );
 402                         $r .= $this->formatList( $this->articles, $this->articles_start_char );
 403                         $r .= $this->getSectionPagingLinks( 'page' );
 404                         $r .= "\n</div>";
 405                 }
 406                 return $r;
 407         }
 408
 409         function getImageSection() {
 410                 $r = '';
 411                 $rescnt = $this->showGallery ? $this->gallery->count() : count( $this->imgsNoGallery );
 412                 if ( $rescnt > 0 ) {
 413                         $dbcnt = $this->cat->getFileCount();
 414                         $countmsg = $this->getCountMessage( $rescnt, $dbcnt, 'file' );
 415
 416                         $r .= "<div id=\"mw-category-media\">\n";
 417                         $r .= '<h2>' . wfMsg( 'category-media-header', htmlspecialchars( $this->title->getText() ) ) . "</h2>\n";
 418                         $r .= $countmsg;
 419                         $r .= $this->getSectionPagingLinks( 'file' );
 420                         if ( $this->showGallery ) {
 421                                 $r .= $this->gallery->toHTML();
 422                         } else {
 423                                 $r .= $this->formatList( $this->imgsNoGallery, $this->imgsNoGallery_start_char );
 424                         }
 425                         $r .= $this->getSectionPagingLinks( 'file' );
 426                         $r .= "\n</div>";
 427                 }
 428                 return $r;
 429         }
 430
 431         /**
 432          * Get the paging links for a section (subcats/pages/files), to go at the top and bottom
 433          * of the output.
 434          *
 435          * @param $type String: 'page', 'subcat', or 'file'
 436          * @return String: HTML output, possibly empty if there are no other pages
 437          */
 438         private function getSectionPagingLinks( $type ) {
 439                 if ( $this->until[$type] !== null ) {
 440                         return $this->pagingLinks( $this->nextPage[$type], $this->until[$type], $type );
 441                 } elseif ( $this->nextPage[$type] !== null || $this->from[$type] !== null ) {
 442                         return $this->pagingLinks( $this->from[$type], $this->nextPage[$type], $type );
 443                 } else {
 444                         return '';
 445                 }
 446         }
 447
 448         function getCategoryBottom() {
 449                 return '';
 450         }
 451
 452         /**
 453          * Format a list of articles chunked by letter, either as a
 454          * bullet list or a columnar format, depending on the length.
 455          *
 456          * @param $articles Array
 457          * @param $articles_start_char Array
 458          * @param $cutoff Int
 459          * @return String
 460          * @private
 461          */
 462         function formatList( $articles, $articles_start_char, $cutoff = 6 ) {
 463                 if ( count ( $articles ) > $cutoff ) {
 464                         return self::columnList( $articles, $articles_start_char );
 465                 } elseif ( count( $articles ) > 0 ) {
 466                         // for short lists of articles in categories.
 467                         return self::shortList( $articles, $articles_start_char );
 468                 }
 469                 return '';
 470         }
 471
 472         /**
 473          * Format a list of articles chunked by letter in a three-column
 474          * list, ordered vertically.
 475          *
 476          * TODO: Take the headers into account when creating columns, so they're
 477          * more visually equal.
 478          *
 479          * More distant TODO: Scrap this and use CSS columns, whenever IE finally
 480          * supports those.
 481          *
 482          * @param $articles Array
 483          * @param $articles_start_char Array
 484          * @return String
 485          * @private
 486          */
 487         static function columnList( $articles, $articles_start_char ) {
 488                 $columns = array_combine( $articles, $articles_start_char );
 489                 # Split into three columns
 490                 $columns = array_chunk( $columns, ceil( count( $columns ) / 3 ), true /* preserve keys */ );
 491
 492                 $ret = '<table width="100%"><tr valign="top"><td>';
 493                 $prevchar = null;
 494
 495                 foreach ( $columns as $column ) {
 496                         $colContents = array();
 497
 498                         # Kind of like array_flip() here, but we keep duplicates in an
 499                         # array instead of dropping them.
 500                         foreach ( $column as $article => $char ) {
 501                                 if ( !isset( $colContents[$char] ) ) {
 502                                         $colContents[$char] = array();
 503                                 }
 504                                 $colContents[$char][] = $article;
 505                         }
 506
 507                         $first = true;
 508                         foreach ( $colContents as $char => $articles ) {
 509                                 $ret .= '<h3>' . htmlspecialchars( $char );
 510                                 if ( $first && $char === $prevchar ) {
 511                                         # We're continuing a previous chunk at the top of a new
 512                                         # column, so add " cont." after the letter.
 513                                         $ret .= ' ' . wfMsgHtml( 'listingcontinuesabbrev' );
 514                                 }
 515                                 $ret .= "</h3>\n";
 516
 517                                 $ret .= '<ul><li>';
 518                                 $ret .= implode( "</li>\n<li>", $articles );
 519                                 $ret .= '</li></ul>';
 520
 521                                 $first = false;
 522                                 $prevchar = $char;
 523                         }
 524
 525                         $ret .= "</td>\n<td>";
 526                 }
 527
 528                 $ret .= '</td></tr></table>';
 529                 return $ret;
 530         }
 531
 532         /**
 533          * Format a list of articles chunked by letter in a bullet list.
 534          * @param $articles Array
 535          * @param $articles_start_char Array
 536          * @return String
 537          * @private
 538          */
 539         static function shortList( $articles, $articles_start_char ) {
 540                 $r = '<h3>' . htmlspecialchars( $articles_start_char[0] ) . "</h3>\n";
 541                 $r .= '<ul><li>' . $articles[0] . '</li>';
 542                 for ( $index = 1; $index < count( $articles ); $index++ )
 543                 {
 544                         if ( $articles_start_char[$index] != $articles_start_char[$index - 1] )
 545                         {
 546                                 $r .= "</ul><h3>" . htmlspecialchars( $articles_start_char[$index] ) . "</h3>\n<ul>";
 547                         }
 548
 549                         $r .= "<li>{$articles[$index]}</li>";
 550                 }
 551                 $r .= '</ul>';
 552                 return $r;
 553         }
 554
 555         /**
 556          * Create paging links, as a helper method to getSectionPagingLinks().
 557          *
 558          * @param $first String The 'until' parameter for the generated URL
 559          * @param $last String The 'from' parameter for the genererated URL
 560          * @param $type String A prefix for parameters, 'page' or 'subcat' or
 561          *     'file'
 562          * @return String HTML
 563          */
 564         private function pagingLinks( $first, $last, $type = '' ) {
 565                 global $wgLang;
 566                 $sk = $this->getSkin();
 567                 $limitText = $wgLang->formatNum( $this->limit );
 568
 569                 $prevLink = wfMsgExt( 'prevn', array( 'escape', 'parsemag' ), $limitText );
 570
 571                 if ( $first != '' ) {
 572                         $prevQuery = $this->query;
 573                         $prevQuery["{$type}until"] = $first;
 574                         unset( $prevQuery["{$type}from"] );
 575                         $prevLink = $sk->linkKnown(
 576                                 $this->title,
 577                                 $prevLink,
 578                                 array(),
 579                                 $prevQuery
 580                         );
 581                 }
 582
 583                 $nextLink = wfMsgExt( 'nextn', array( 'escape', 'parsemag' ), $limitText );
 584
 585                 if ( $last != '' ) {
 586                         $lastQuery = $this->query;
 587                         $lastQuery["{$type}from"] = $last;
 588                         unset( $lastQuery["{$type}until"] );
 589                         $nextLink = $sk->linkKnown(
 590                                 $this->title,
 591                                 $nextLink,
 592                                 array(),
 593                                 $lastQuery
 594                         );
 595                 }
 596
 597                 return "($prevLink) ($nextLink)";
 598         }
 599
 600         /**
 601          * What to do if the category table conflicts with the number of results
 602          * returned?  This function says what. Each type is considered independantly
 603          * of the other types.
 604          *
 605          * Note for grepping: uses the messages category-article-count,
 606          * category-article-count-limited, category-subcat-count,
 607          * category-subcat-count-limited, category-file-count,
 608          * category-file-count-limited.
 609          *
 610          * @param $rescnt Int: The number of items returned by our database query.
 611          * @param $dbcnt Int: The number of items according to the category table.
 612          * @param $type String: 'subcat', 'article', or 'file'
 613          * @return String: A message giving the number of items, to output to HTML.
 614          */
 615         private function getCountMessage( $rescnt, $dbcnt, $type ) {
 616                 global $wgLang;
 617                 # There are three cases:
 618                 #   1) The category table figure seems sane.  It might be wrong, but
 619                 #      we can't do anything about it if we don't recalculate it on ev-
 620                 #      ery category view.
 621                 #   2) The category table figure isn't sane, like it's smaller than the
 622                 #      number of actual results, *but* the number of results is less
 623                 #      than $this->limit and there's no offset.  In this case we still
 624                 #      know the right figure.
 625                 #   3) We have no idea.
 626
 627                 # Check if there's a "from" or "until" for anything
 628
 629                 // This is a little ugly, but we seem to use different names
 630                 // for the paging types then for the messages.
 631                 if ( $type === 'article' ) {
 632                         $pagingType = 'page';
 633                 } else {
 634                         $pagingType = $type;
 635                 }
 636
 637                 $fromOrUntil = false;
 638                 if ( $this->from[$pagingType] !== null || $this->until[$pagingType] !== null ) {
 639                         $fromOrUntil = true;
 640                 }
 641
 642                 if ( $dbcnt == $rescnt || ( ( $rescnt == $this->limit || $fromOrUntil )
 643                         && $dbcnt > $rescnt ) )
 644                 {
 645                         # Case 1: seems sane.
 646                         $totalcnt = $dbcnt;
 647                 } elseif ( $rescnt < $this->limit && !$fromOrUntil ) {
 648                         # Case 2: not sane, but salvageable.  Use the number of results.
 649                         # Since there are fewer than 200, we can also take this opportunity
 650                         # to refresh the incorrect category table entry -- which should be
 651                         # quick due to the small number of entries.
 652                         $totalcnt = $rescnt;
 653                         $this->cat->refreshCounts();
 654                 } else {
 655                         # Case 3: hopeless.  Don't give a total count at all.
 656                         return wfMsgExt( "category-$type-count-limited", 'parse',
 657                                 $wgLang->formatNum( $rescnt ) );
 658                 }
 659                 return wfMsgExt(
 660                         "category-$type-count",
 661                         'parse',
 662                         $wgLang->formatNum( $rescnt ),
 663                         $wgLang->formatNum( $totalcnt )
 664                 );
 665         }
 666 }