includes/specials/SpecialSearch.php

   1 <?php
   2 /**
   3  * Implements Special:Search
   4  *
   5  * Copyright © 2004 Brion Vibber <brion@pobox.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  * @ingroup SpecialPage
  24  */
  25
  26 /**
  27  * implements Special:Search - Run text & title search and display the output
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialSearch extends SpecialPage {
  31         /**
  32          * Current search profile. Search profile is just a name that identifies
  33          * the active search tab on the search page (content, discussions...)
  34          * For users tt replaces the set of enabled namespaces from the query
  35          * string when applicable. Extensions can add new profiles with hooks
  36          * with custom search options just for that profile.
  37          * @var null|string
  38          */
  39         protected $profile;
  40
  41         /** @var SearchEngine Search engine */
  42         protected $searchEngine;
  43
  44         /** @var string Search engine type, if not default */
  45         protected $searchEngineType;
  46
  47         /** @var array For links */
  48         protected $extraParams = array();
  49
  50         /** @var string No idea, apparently used by some other classes */
  51         protected $mPrefix;
  52
  53         /**
  54          * @var int
  55          */
  56         protected $limit, $offset;
  57
  58         /**
  59          * @var array
  60          */
  61         protected $namespaces;
  62
  63         /**
  64          * @var string
  65          */
  66         protected $didYouMeanHtml, $fulltext;
  67
  68         const NAMESPACES_CURRENT = 'sense';
  69
  70         public function __construct() {
  71                 parent::__construct( 'Search' );
  72         }
  73
  74         /**
  75          * Entry point
  76          *
  77          * @param string $par
  78          */
  79         public function execute( $par ) {
  80                 $this->setHeaders();
  81                 $this->outputHeader();
  82                 $out = $this->getOutput();
  83                 $out->allowClickjacking();
  84                 $out->addModuleStyles( array(
  85                         'mediawiki.special', 'mediawiki.special.search', 'mediawiki.ui', 'mediawiki.ui.button'
  86                 ) );
  87
  88                 // Strip underscores from title parameter; most of the time we'll want
  89                 // text form here. But don't strip underscores from actual text params!
  90                 $titleParam = str_replace( '_', ' ', $par );
  91
  92                 $request = $this->getRequest();
  93
  94                 // Fetch the search term
  95                 $search = str_replace( "\n", " ", $request->getText( 'search', $titleParam ) );
  96
  97                 $this->load();
  98
  99                 $this->searchEngineType = $request->getVal( 'srbackend' );
 100
 101                 if ( $request->getVal( 'fulltext' )
 102                         || !is_null( $request->getVal( 'offset' ) )
 103                 ) {
 104                         $this->showResults( $search );
 105                 } else {
 106                         $this->goResult( $search );
 107                 }
 108         }
 109
 110         /**
 111          * Set up basic search parameters from the request and user settings.
 112          *
 113          * @see tests/phpunit/includes/specials/SpecialSearchTest.php
 114          */
 115         public function load() {
 116                 $request = $this->getRequest();
 117                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, '' );
 118                 $this->mPrefix = $request->getVal( 'prefix', '' );
 119
 120                 $user = $this->getUser();
 121
 122                 # Extract manually requested namespaces
 123                 $nslist = $this->powerSearch( $request );
 124                 if ( !count( $nslist ) ) {
 125                         # Fallback to user preference
 126                         $nslist = SearchEngine::userNamespaces( $user );
 127                 }
 128
 129                 $profile = null;
 130                 if ( !count( $nslist ) ) {
 131                         $profile = 'default';
 132                 }
 133
 134                 $profile = $request->getVal( 'profile', $profile );
 135                 $profiles = $this->getSearchProfiles();
 136                 if ( $profile === null ) {
 137                         // BC with old request format
 138                         $profile = 'advanced';
 139                         foreach ( $profiles as $key => $data ) {
 140                                 if ( $nslist === $data['namespaces'] && $key !== 'advanced' ) {
 141                                         $profile = $key;
 142                                 }
 143                         }
 144                         $this->namespaces = $nslist;
 145                 } elseif ( $profile === 'advanced' ) {
 146                         $this->namespaces = $nslist;
 147                 } else {
 148                         if ( isset( $profiles[$profile]['namespaces'] ) ) {
 149                                 $this->namespaces = $profiles[$profile]['namespaces'];
 150                         } else {
 151                                 // Unknown profile requested
 152                                 $profile = 'default';
 153                                 $this->namespaces = $profiles['default']['namespaces'];
 154                         }
 155                 }
 156
 157                 $this->didYouMeanHtml = ''; # html of did you mean... link
 158                 $this->fulltext = $request->getVal( 'fulltext' );
 159                 $this->profile = $profile;
 160         }
 161
 162         /**
 163          * If an exact title match can be found, jump straight ahead to it.
 164          *
 165          * @param string $term
 166          */
 167         public function goResult( $term ) {
 168                 $this->setupPage( $term );
 169                 # Try to go to page as entered.
 170                 $title = Title::newFromText( $term );
 171                 # If the string cannot be used to create a title
 172                 if ( is_null( $title ) ) {
 173                         $this->showResults( $term );
 174
 175                         return;
 176                 }
 177                 # If there's an exact or very near match, jump right there.
 178                 $title = SearchEngine::getNearMatch( $term );
 179
 180                 if ( !is_null( $title ) ) {
 181                         $this->getOutput()->redirect( $title->getFullURL() );
 182
 183                         return;
 184                 }
 185                 # No match, generate an edit URL
 186                 $title = Title::newFromText( $term );
 187                 if ( !is_null( $title ) ) {
 188                         global $wgGoToEdit;
 189                         wfRunHooks( 'SpecialSearchNogomatch', array( &$title ) );
 190                         wfDebugLog( 'nogomatch', $title->getFullText(), 'private' );
 191
 192                         # If the feature is enabled, go straight to the edit page
 193                         if ( $wgGoToEdit ) {
 194                                 $this->getOutput()->redirect( $title->getFullURL( array( 'action' => 'edit' ) ) );
 195
 196                                 return;
 197                         }
 198                 }
 199                 $this->showResults( $term );
 200         }
 201
 202         /**
 203          * @param string $term
 204          */
 205         public function showResults( $term ) {
 206                 global $wgDisableTextSearch, $wgSearchForwardUrl, $wgContLang, $wgScript;
 207
 208                 $profile = new ProfileSection( __METHOD__ );
 209                 $search = $this->getSearchEngine();
 210                 $search->setLimitOffset( $this->limit, $this->offset );
 211                 $search->setNamespaces( $this->namespaces );
 212                 $this->saveNamespaces();
 213                 $search->prefix = $this->mPrefix;
 214                 $term = $search->transformSearchTerm( $term );
 215
 216                 wfRunHooks( 'SpecialSearchSetupEngine', array( $this, $this->profile, $search ) );
 217
 218                 $this->setupPage( $term );
 219
 220                 $out = $this->getOutput();
 221
 222                 if ( $wgDisableTextSearch ) {
 223                         if ( $wgSearchForwardUrl ) {
 224                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 225                                 $out->redirect( $url );
 226                         } else {
 227                                 $out->addHTML(
 228                                         Xml::openElement( 'fieldset' ) .
 229                                         Xml::element( 'legend', null, $this->msg( 'search-external' )->text() ) .
 230                                         Xml::element(
 231                                                 'p',
 232                                                 array( 'class' => 'mw-searchdisabled' ),
 233                                                 $this->msg( 'searchdisabled' )->text()
 234                                         ) .
 235                                         $this->msg( 'googlesearch' )->rawParams(
 236                                                 htmlspecialchars( $term ),
 237                                                 'UTF-8',
 238                                                 $this->msg( 'searchbutton' )->escaped()
 239                                         )->text() .
 240                                         Xml::closeElement( 'fieldset' )
 241                                 );
 242                         }
 243
 244                         return;
 245                 }
 246
 247                 $title = Title::newFromText( $term );
 248                 $showSuggestion = $title === null || !$title->isKnown();
 249                 $search->setShowSuggestion( $showSuggestion );
 250
 251                 // fetch search results
 252                 $rewritten = $search->replacePrefixes( $term );
 253
 254                 $titleMatches = $search->searchTitle( $rewritten );
 255                 $textMatches = $search->searchText( $rewritten );
 256
 257                 $textStatus = null;
 258                 if ( $textMatches instanceof Status ) {
 259                         $textStatus = $textMatches;
 260                         $textMatches = null;
 261                 }
 262
 263                 // did you mean... suggestions
 264                 if ( $showSuggestion && $textMatches && !$textStatus && $textMatches->hasSuggestion() ) {
 265                         # mirror Go/Search behavior of original request ..
 266                         $didYouMeanParams = array( 'search' => $textMatches->getSuggestionQuery() );
 267
 268                         if ( $this->fulltext != null ) {
 269                                 $didYouMeanParams['fulltext'] = $this->fulltext;
 270                         }
 271
 272                         $stParams = array_merge(
 273                                 $didYouMeanParams,
 274                                 $this->powerSearchOptions()
 275                         );
 276
 277                         $suggestionSnippet = $textMatches->getSuggestionSnippet();
 278
 279                         if ( $suggestionSnippet == '' ) {
 280                                 $suggestionSnippet = null;
 281                         }
 282
 283                         $suggestLink = Linker::linkKnown(
 284                                 $this->getPageTitle(),
 285                                 $suggestionSnippet,
 286                                 array(),
 287                                 $stParams
 288                         );
 289
 290                         $this->didYouMeanHtml = '<div class="searchdidyoumean">'
 291                                 . $this->msg( 'search-suggest' )->rawParams( $suggestLink )->text() . '</div>';
 292                 }
 293
 294                 if ( !wfRunHooks( 'SpecialSearchResultsPrepend', array( $this, $out, $term ) ) ) {
 295                         # Hook requested termination
 296                         return;
 297                 }
 298
 299                 // start rendering the page
 300                 $out->addHtml(
 301                         Xml::openElement(
 302                                 'form',
 303                                 array(
 304                                         'id' => ( $this->profile === 'advanced' ? 'powersearch' : 'search' ),
 305                                         'method' => 'get',
 306                                         'action' => $wgScript
 307                                 )
 308                         )
 309                 );
 310
 311                 // Get number of results
 312                 $titleMatchesNum = $textMatchesNum = $numTitleMatches = $numTextMatches = 0;
 313                 if ( $titleMatches ) {
 314                         $titleMatchesNum = $titleMatches->numRows();
 315                         $numTitleMatches = $titleMatches->getTotalHits();
 316                 }
 317                 if ( $textMatches ) {
 318                         $textMatchesNum = $textMatches->numRows();
 319                         $numTextMatches = $textMatches->getTotalHits();
 320                 }
 321                 $num = $titleMatchesNum + $textMatchesNum;
 322                 $totalRes = $numTitleMatches + $numTextMatches;
 323
 324                 $out->addHtml(
 325                         # This is an awful awful ID name. It's not a table, but we
 326                         # named it poorly from when this was a table so now we're
 327                         # stuck with it
 328                         Xml::openElement( 'div', array( 'id' => 'mw-search-top-table' ) ) .
 329                         $this->shortDialog( $term, $num, $totalRes ) .
 330                         Xml::closeElement( 'div' ) .
 331                         $this->formHeader( $term ) .
 332                         Xml::closeElement( 'form' )
 333                 );
 334
 335                 $filePrefix = $wgContLang->getFormattedNsText( NS_FILE ) . ':';
 336                 if ( trim( $term ) === '' || $filePrefix === trim( $term ) ) {
 337                         // Empty query -- straight view of search form
 338                         return;
 339                 }
 340
 341                 $out->addHtml( "<div class='searchresults'>" );
 342
 343                 // prev/next links
 344                 $prevnext = null;
 345                 if ( $num || $this->offset ) {
 346                         // Show the create link ahead
 347                         $this->showCreateLink( $title, $num, $titleMatches, $textMatches );
 348                         if ( $totalRes > $this->limit || $this->offset ) {
 349                                 $prevnext = $this->getLanguage()->viewPrevNext(
 350                                         $this->getPageTitle(),
 351                                         $this->offset,
 352                                         $this->limit,
 353                                         $this->powerSearchOptions() + array( 'search' => $term ),
 354                                         $this->limit + $this->offset >= $totalRes
 355                                 );
 356                         }
 357                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 358                 } else {
 359                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 360                 }
 361
 362                 $out->parserOptions()->setEditSection( false );
 363                 if ( $titleMatches ) {
 364                         if ( $numTitleMatches > 0 ) {
 365                                 $out->wrapWikiMsg( "==$1==\n", 'titlematches' );
 366                                 $out->addHTML( $this->showMatches( $titleMatches ) );
 367                         }
 368                         $titleMatches->free();
 369                 }
 370                 if ( $textMatches && !$textStatus ) {
 371                         // output appropriate heading
 372                         if ( $numTextMatches > 0 && $numTitleMatches > 0 ) {
 373                                 // if no title matches the heading is redundant
 374                                 $out->wrapWikiMsg( "==$1==\n", 'textmatches' );
 375                         }
 376
 377                         // show interwiki results if any
 378                         if ( $textMatches->hasInterwikiResults() ) {
 379                                 $out->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
 380                         }
 381                         // show results
 382                         if ( $numTextMatches > 0 ) {
 383                                 $out->addHTML( $this->showMatches( $textMatches ) );
 384                         }
 385
 386                         $textMatches->free();
 387                 }
 388                 if ( $num === 0 ) {
 389                         if ( $textStatus ) {
 390                                 $out->addHTML( '<div class="error">' .
 391                                         $textStatus->getMessage( 'search-error' ) . '</div>' );
 392                         } else {
 393                                 $out->wrapWikiMsg( "<p class=\"mw-search-nonefound\">\n$1</p>",
 394                                         array( 'search-nonefound', wfEscapeWikiText( $term ) ) );
 395                                 $this->showCreateLink( $title, $num, $titleMatches, $textMatches );
 396                         }
 397                 }
 398                 $out->addHtml( "</div>" );
 399
 400                 if ( $prevnext ) {
 401                         $out->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 402                 }
 403         }
 404
 405         /**
 406          * @param Title $title
 407          * @param int $num The number of search results found
 408          * @param null|SearchResultSet $titleMatches Results from title search
 409          * @param null|SearchResultSet $textMatches  Results from text search
 410          */
 411         protected function showCreateLink( $title, $num, $titleMatches, $textMatches ) {
 412                 // show direct page/create link if applicable
 413
 414                 // Check DBkey !== '' in case of fragment link only.
 415                 if ( is_null( $title ) || $title->getDBkey() === ''
 416                         || ( $titleMatches !== null && $titleMatches->searchContainedSyntax() )
 417                         || ( $textMatches !== null && $textMatches->searchContainedSyntax() )
 418                 ) {
 419                         // invalid title
 420                         // preserve the paragraph for margins etc...
 421                         $this->getOutput()->addHtml( '<p></p>' );
 422
 423                         return;
 424                 }
 425
 426                 if ( $title->isKnown() ) {
 427                         $messageName = 'searchmenu-exists';
 428                 } elseif ( $title->quickUserCan( 'create', $this->getUser() ) ) {
 429                         $messageName = 'searchmenu-new';
 430                 } else {
 431                         $messageName = 'searchmenu-new-nocreate';
 432                 }
 433                 $params = array(
 434                         $messageName,
 435                         wfEscapeWikiText( $title->getPrefixedText() ),
 436                         Message::numParam( $num )
 437                 );
 438                 wfRunHooks( 'SpecialSearchCreateLink', array( $title, &$params ) );
 439
 440                 // Extensions using the hook might still return an empty $messageName
 441                 if ( $messageName ) {
 442                         $this->getOutput()->wrapWikiMsg( "<p class=\"mw-search-createlink\">\n$1</p>", $params );
 443                 } else {
 444                         // preserve the paragraph for margins etc...
 445                         $this->getOutput()->addHtml( '<p></p>' );
 446                 }
 447         }
 448
 449         /**
 450          * @param string $term
 451          */
 452         protected function setupPage( $term ) {
 453                 # Should advanced UI be used?
 454                 $this->searchAdvanced = ( $this->profile === 'advanced' );
 455                 $out = $this->getOutput();
 456                 if ( strval( $term ) !== '' ) {
 457                         $out->setPageTitle( $this->msg( 'searchresults' ) );
 458                         $out->setHTMLTitle( $this->msg( 'pagetitle' )
 459                                 ->rawParams( $this->msg( 'searchresults-title' )->rawParams( $term )->text() )
 460                                 ->inContentLanguage()->text()
 461                         );
 462                 }
 463                 // add javascript specific to special:search
 464                 $out->addModules( 'mediawiki.special.search' );
 465         }
 466
 467         /**
 468          * Extract "power search" namespace settings from the request object,
 469          * returning a list of index numbers to search.
 470          *
 471          * @param WebRequest $request
 472          * @return array
 473          */
 474         protected function powerSearch( &$request ) {
 475                 $arr = array();
 476                 foreach ( SearchEngine::searchableNamespaces() as $ns => $name ) {
 477                         if ( $request->getCheck( 'ns' . $ns ) ) {
 478                                 $arr[] = $ns;
 479                         }
 480                 }
 481
 482                 return $arr;
 483         }
 484
 485         /**
 486          * Reconstruct the 'power search' options for links
 487          *
 488          * @return array
 489          */
 490         protected function powerSearchOptions() {
 491                 $opt = array();
 492                 if ( $this->profile !== 'advanced' ) {
 493                         $opt['profile'] = $this->profile;
 494                 } else {
 495                         foreach ( $this->namespaces as $n ) {
 496                                 $opt['ns' . $n] = 1;
 497                         }
 498                 }
 499
 500                 return $opt + $this->extraParams;
 501         }
 502
 503         /**
 504          * Save namespace preferences when we're supposed to
 505          *
 506          * @return bool Whether we wrote something
 507          */
 508         protected function saveNamespaces() {
 509                 $user = $this->getUser();
 510                 $request = $this->getRequest();
 511
 512                 if ( $user->isLoggedIn() &&
 513                         !is_null( $request->getVal( 'nsRemember' ) ) &&
 514                         $user->matchEditToken(
 515                                 $request->getVal( 'nsToken' ),
 516                                 'searchnamespace',
 517                                 $request
 518                         )
 519                 ) {
 520                         // Reset namespace preferences: namespaces are not searched
 521                         // when they're not mentioned in the URL parameters.
 522                         foreach ( MWNamespace::getValidNamespaces() as $n ) {
 523                                 $user->setOption( 'searchNs' . $n, false );
 524                         }
 525                         // The request parameters include all the namespaces we just searched.
 526                         // Even if they're the same as an existing profile, they're not eaten.
 527                         foreach ( $this->namespaces as $n ) {
 528                                 $user->setOption( 'searchNs' . $n, true );
 529                         }
 530
 531                         $user->saveSettings();
 532                         return true;
 533                 }
 534
 535                 return false;
 536         }
 537
 538         /**
 539          * Show whole set of results
 540          *
 541          * @param SearchResultSet $matches
 542          *
 543          * @return string
 544          */
 545         protected function showMatches( &$matches ) {
 546                 global $wgContLang;
 547
 548                 $profile = new ProfileSection( __METHOD__ );
 549                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 550
 551                 $out = "<ul class='mw-search-results'>\n";
 552                 $result = $matches->next();
 553                 while ( $result ) {
 554                         $out .= $this->showHit( $result, $terms );
 555                         $result = $matches->next();
 556                 }
 557                 $out .= "</ul>\n";
 558
 559                 // convert the whole thing to desired language variant
 560                 $out = $wgContLang->convert( $out );
 561
 562                 return $out;
 563         }
 564
 565         /**
 566          * Format a single hit result
 567          *
 568          * @param SearchResult $result
 569          * @param array $terms Terms to highlight
 570          *
 571          * @return string
 572          */
 573         protected function showHit( $result, $terms ) {
 574                 $profile = new ProfileSection( __METHOD__ );
 575
 576                 if ( $result->isBrokenTitle() ) {
 577                         return '';
 578                 }
 579
 580                 $title = $result->getTitle();
 581
 582                 $titleSnippet = $result->getTitleSnippet( $terms );
 583
 584                 if ( $titleSnippet == '' ) {
 585                         $titleSnippet = null;
 586                 }
 587
 588                 $link_t = clone $title;
 589
 590                 wfRunHooks( 'ShowSearchHitTitle',
 591                         array( &$link_t, &$titleSnippet, $result, $terms, $this ) );
 592
 593                 $link = Linker::linkKnown(
 594                         $link_t,
 595                         $titleSnippet
 596                 );
 597
 598                 //If page content is not readable, just return the title.
 599                 //This is not quite safe, but better than showing excerpts from non-readable pages
 600                 //Note that hiding the entry entirely would screw up paging.
 601                 if ( !$title->userCan( 'read', $this->getUser() ) ) {
 602                         return "<li>{$link}</li>\n";
 603                 }
 604
 605                 // If the page doesn't *exist*... our search index is out of date.
 606                 // The least confusing at this point is to drop the result.
 607                 // You may get less results, but... oh well. :P
 608                 if ( $result->isMissingRevision() ) {
 609                         return '';
 610                 }
 611
 612                 // format redirects / relevant sections
 613                 $redirectTitle = $result->getRedirectTitle();
 614                 $redirectText = $result->getRedirectSnippet( $terms );
 615                 $sectionTitle = $result->getSectionTitle();
 616                 $sectionText = $result->getSectionSnippet( $terms );
 617                 $redirect = '';
 618
 619                 if ( !is_null( $redirectTitle ) ) {
 620                         if ( $redirectText == '' ) {
 621                                 $redirectText = null;
 622                         }
 623
 624                         $redirect = "<span class='searchalttitle'>" .
 625                                 $this->msg( 'search-redirect' )->rawParams(
 626                                         Linker::linkKnown( $redirectTitle, $redirectText ) )->text() .
 627                                 "</span>";
 628                 }
 629
 630                 $section = '';
 631
 632                 if ( !is_null( $sectionTitle ) ) {
 633                         if ( $sectionText == '' ) {
 634                                 $sectionText = null;
 635                         }
 636
 637                         $section = "<span class='searchalttitle'>" .
 638                                 $this->msg( 'search-section' )->rawParams(
 639                                         Linker::linkKnown( $sectionTitle, $sectionText ) )->text() .
 640                                 "</span>";
 641                 }
 642
 643                 // format text extract
 644                 $extract = "<div class='searchresult'>" . $result->getTextSnippet( $terms ) . "</div>";
 645
 646                 $lang = $this->getLanguage();
 647
 648                 // format score
 649                 if ( is_null( $result->getScore() ) ) {
 650                         // Search engine doesn't report scoring info
 651                         $score = '';
 652                 } else {
 653                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 654                         $score = $this->msg( 'search-result-score' )->numParams( $percent )->text()
 655                                 . ' - ';
 656                 }
 657
 658                 // format description
 659                 $byteSize = $result->getByteSize();
 660                 $wordCount = $result->getWordCount();
 661                 $timestamp = $result->getTimestamp();
 662                 $size = $this->msg( 'search-result-size', $lang->formatSize( $byteSize ) )
 663                         ->numParams( $wordCount )->escaped();
 664
 665                 if ( $title->getNamespace() == NS_CATEGORY ) {
 666                         $cat = Category::newFromTitle( $title );
 667                         $size = $this->msg( 'search-result-category-size' )
 668                                 ->numParams( $cat->getPageCount(), $cat->getSubcatCount(), $cat->getFileCount() )
 669                                 ->escaped();
 670                 }
 671
 672                 $date = $lang->userTimeAndDate( $timestamp, $this->getUser() );
 673
 674                 // link to related articles if supported
 675                 $related = '';
 676                 if ( $result->hasRelated() ) {
 677                         $stParams = array_merge(
 678                                 $this->powerSearchOptions(),
 679                                 array(
 680                                         'search' => $this->msg( 'searchrelated' )->inContentLanguage()->text() .
 681                                                 ':' . $title->getPrefixedText(),
 682                                         'fulltext' => $this->msg( 'search' )->text()
 683                                 )
 684                         );
 685
 686                         $related = ' -- ' . Linker::linkKnown(
 687                                 $this->getPageTitle(),
 688                                 $this->msg( 'search-relatedarticle' )->text(),
 689                                 array(),
 690                                 $stParams
 691                         );
 692                 }
 693
 694                 $fileMatch = '';
 695                 // Include a thumbnail for media files...
 696                 if ( $title->getNamespace() == NS_FILE ) {
 697                         $img = $result->getFile();
 698                         $img = $img ?: wfFindFile( $title );
 699                         if ( $result->isFileMatch() ) {
 700                                 $fileMatch = "<span class='searchalttitle'>" .
 701                                         $this->msg( 'search-file-match' )->escaped() . "</span>";
 702                         }
 703                         if ( $img ) {
 704                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 705                                 if ( $thumb ) {
 706                                         $desc = $this->msg( 'parentheses' )->rawParams( $img->getShortDesc() )->escaped();
 707                                         // Float doesn't seem to interact well with the bullets.
 708                                         // Table messes up vertical alignment of the bullets.
 709                                         // Bullets are therefore disabled (didn't look great anyway).
 710                                         return "<li>" .
 711                                                 '<table class="searchResultImage">' .
 712                                                 '<tr>' .
 713                                                 '<td style="width: 120px; text-align: center; vertical-align: top;">' .
 714                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 715                                                 '</td>' .
 716                                                 '<td style="vertical-align: top;">' .
 717                                                 "{$link} {$fileMatch}" .
 718                                                 $extract .
 719                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 720                                                 '</td>' .
 721                                                 '</tr>' .
 722                                                 '</table>' .
 723                                                 "</li>\n";
 724                                 }
 725                         }
 726                 }
 727
 728                 $html = null;
 729
 730                 if ( wfRunHooks( 'ShowSearchHit', array(
 731                         $this, $result, $terms,
 732                         &$link, &$redirect, &$section, &$extract,
 733                         &$score, &$size, &$date, &$related,
 734                         &$html
 735                 ) ) ) {
 736                         $html = "<li><div class='mw-search-result-heading'>" .
 737                                 "{$link} {$redirect} {$section} {$fileMatch}</div> {$extract}\n" .
 738                                 "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 739                                 "</li>\n";
 740                 }
 741
 742                 return $html;
 743         }
 744
 745         /**
 746          * Show results from other wikis
 747          *
 748          * @param SearchResultSet|array $matches
 749          * @param string $query
 750          *
 751          * @return string
 752          */
 753         protected function showInterwiki( $matches, $query ) {
 754                 global $wgContLang;
 755                 $profile = new ProfileSection( __METHOD__ );
 756
 757                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>" .
 758                         $this->msg( 'search-interwiki-caption' )->text() . "</div>\n";
 759                 $out .= "<ul class='mw-search-iwresults'>\n";
 760
 761                 // work out custom project captions
 762                 $customCaptions = array();
 763                 // format per line <iwprefix>:<caption>
 764                 $customLines = explode( "\n", $this->msg( 'search-interwiki-custom' )->text() );
 765                 foreach ( $customLines as $line ) {
 766                         $parts = explode( ":", $line, 2 );
 767                         if ( count( $parts ) == 2 ) { // validate line
 768                                 $customCaptions[$parts[0]] = $parts[1];
 769                         }
 770                 }
 771
 772                 if ( !is_array( $matches ) ) {
 773                         $matches = array( $matches );
 774                 }
 775
 776                 foreach ( $matches as $set ) {
 777                         $prev = null;
 778                         $result = $set->next();
 779                         while ( $result ) {
 780                                 $out .= $this->showInterwikiHit( $result, $prev, $query, $customCaptions );
 781                                 $prev = $result->getInterwikiPrefix();
 782                                 $result = $set->next();
 783                         }
 784                 }
 785
 786                 // @todo Should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 787                 $out .= "</ul></div>\n";
 788
 789                 // convert the whole thing to desired language variant
 790                 $out = $wgContLang->convert( $out );
 791
 792                 return $out;
 793         }
 794
 795         /**
 796          * Show single interwiki link
 797          *
 798          * @param SearchResult $result
 799          * @param string $lastInterwiki
 800          * @param string $query
 801          * @param array $customCaptions iw prefix -> caption
 802          *
 803          * @return string
 804          */
 805         protected function showInterwikiHit( $result, $lastInterwiki, $query, $customCaptions ) {
 806                 $profile = new ProfileSection( __METHOD__ );
 807
 808                 if ( $result->isBrokenTitle() ) {
 809                         return '';
 810                 }
 811
 812                 $title = $result->getTitle();
 813
 814                 $titleSnippet = $result->getTitleSnippet();
 815
 816                 if ( $titleSnippet == '' ) {
 817                         $titleSnippet = null;
 818                 }
 819
 820                 $link = Linker::linkKnown(
 821                         $title,
 822                         $titleSnippet
 823                 );
 824
 825                 // format redirect if any
 826                 $redirectTitle = $result->getRedirectTitle();
 827                 $redirectText = $result->getRedirectSnippet();
 828                 $redirect = '';
 829                 if ( !is_null( $redirectTitle ) ) {
 830                         if ( $redirectText == '' ) {
 831                                 $redirectText = null;
 832                         }
 833
 834                         $redirect = "<span class='searchalttitle'>" .
 835                                 $this->msg( 'search-redirect' )->rawParams(
 836                                         Linker::linkKnown( $redirectTitle, $redirectText ) )->text() .
 837                                 "</span>";
 838                 }
 839
 840                 $out = "";
 841                 // display project name
 842                 if ( is_null( $lastInterwiki ) || $lastInterwiki != $title->getInterwiki() ) {
 843                         if ( array_key_exists( $title->getInterwiki(), $customCaptions ) ) {
 844                                 // captions from 'search-interwiki-custom'
 845                                 $caption = $customCaptions[$title->getInterwiki()];
 846                         } else {
 847                                 // default is to show the hostname of the other wiki which might suck
 848                                 // if there are many wikis on one hostname
 849                                 $parsed = wfParseUrl( $title->getFullURL() );
 850                                 $caption = $this->msg( 'search-interwiki-default', $parsed['host'] )->text();
 851                         }
 852                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 853                         $searchTitle = Title::newFromText( $title->getInterwiki() . ":Special:Search" );
 854                         $searchLink = Linker::linkKnown(
 855                                 $searchTitle,
 856                                 $this->msg( 'search-interwiki-more' )->text(),
 857                                 array(),
 858                                 array(
 859                                         'search' => $query,
 860                                         'fulltext' => 'Search'
 861                                 )
 862                         );
 863                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
 864                                 {$searchLink}</span>{$caption}</div>\n<ul>";
 865                 }
 866
 867                 $out .= "<li>{$link} {$redirect}</li>\n";
 868
 869                 return $out;
 870         }
 871
 872         /**
 873          * Generates the power search box at [[Special:Search]]
 874          *
 875          * @param string $term Search term
 876          * @param array $opts
 877          * @return string HTML form
 878          */
 879         protected function powerSearchBox( $term, $opts ) {
 880                 global $wgContLang;
 881
 882                 // Groups namespaces into rows according to subject
 883                 $rows = array();
 884                 foreach ( SearchEngine::searchableNamespaces() as $namespace => $name ) {
 885                         $subject = MWNamespace::getSubject( $namespace );
 886                         if ( !array_key_exists( $subject, $rows ) ) {
 887                                 $rows[$subject] = "";
 888                         }
 889
 890                         $name = $wgContLang->getConverter()->convertNamespace( $namespace );
 891                         if ( $name == '' ) {
 892                                 $name = $this->msg( 'blanknamespace' )->text();
 893                         }
 894
 895                         $rows[$subject] .=
 896                                 Xml::openElement(
 897                                         'td', array( 'style' => 'white-space: nowrap' )
 898                                 ) .
 899                                 Xml::checkLabel(
 900                                         $name,
 901                                         "ns{$namespace}",
 902                                         "mw-search-ns{$namespace}",
 903                                         in_array( $namespace, $this->namespaces )
 904                                 ) .
 905                                 Xml::closeElement( 'td' );
 906                 }
 907
 908                 $rows = array_values( $rows );
 909                 $numRows = count( $rows );
 910
 911                 // Lays out namespaces in multiple floating two-column tables so they'll
 912                 // be arranged nicely while still accommodating different screen widths
 913                 $namespaceTables = '';
 914                 for ( $i = 0; $i < $numRows; $i += 4 ) {
 915                         $namespaceTables .= Xml::openElement(
 916                                 'table',
 917                                 array( 'cellpadding' => 0, 'cellspacing' => 0 )
 918                         );
 919
 920                         for ( $j = $i; $j < $i + 4 && $j < $numRows; $j++ ) {
 921                                 $namespaceTables .= Xml::tags( 'tr', null, $rows[$j] );
 922                         }
 923
 924                         $namespaceTables .= Xml::closeElement( 'table' );
 925                 }
 926
 927                 $showSections = array( 'namespaceTables' => $namespaceTables );
 928
 929                 wfRunHooks( 'SpecialSearchPowerBox', array( &$showSections, $term, $opts ) );
 930
 931                 $hidden = '';
 932                 foreach ( $opts as $key => $value ) {
 933                         $hidden .= Html::hidden( $key, $value );
 934                 }
 935
 936                 # Stuff to feed saveNamespaces()
 937                 $remember = '';
 938                 $user = $this->getUser();
 939                 if ( $user->isLoggedIn() ) {
 940                         $remember .= Html::hidden(
 941                                 'nsToken',
 942                                 $user->getEditToken(
 943                                         'searchnamespace',
 944                                         $this->getRequest()
 945                                 )
 946                         ) .
 947                         Xml::checkLabel(
 948                                 wfMessage( 'powersearch-remember' )->text(),
 949                                 'nsRemember',
 950                                 'mw-search-powersearch-remember',
 951                                 false
 952                         );
 953                 }
 954
 955                 // Return final output
 956                 return Xml::openElement(
 957                         'fieldset',
 958                         array( 'id' => 'mw-searchoptions', 'style' => 'margin:0em;' )
 959                 ) .
 960                         Xml::element( 'legend', null, $this->msg( 'powersearch-legend' )->text() ) .
 961                         Xml::tags( 'h4', null, $this->msg( 'powersearch-ns' )->parse() ) .
 962                         Html::element( 'div', array( 'id' => 'mw-search-togglebox' ) ) .
 963                         Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
 964                         implode( Xml::element( 'div', array( 'class' => 'divider' ), '', false ), $showSections ) .
 965                         $hidden .
 966                         Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
 967                         $remember .
 968                         Xml::closeElement( 'fieldset' );
 969         }
 970
 971         /**
 972          * @return array
 973          */
 974         protected function getSearchProfiles() {
 975                 // Builds list of Search Types (profiles)
 976                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 977
 978                 $profiles = array(
 979                         'default' => array(
 980                                 'message' => 'searchprofile-articles',
 981                                 'tooltip' => 'searchprofile-articles-tooltip',
 982                                 'namespaces' => SearchEngine::defaultNamespaces(),
 983                                 'namespace-messages' => SearchEngine::namespacesAsText(
 984                                         SearchEngine::defaultNamespaces()
 985                                 ),
 986                         ),
 987                         'images' => array(
 988                                 'message' => 'searchprofile-images',
 989                                 'tooltip' => 'searchprofile-images-tooltip',
 990                                 'namespaces' => array( NS_FILE ),
 991                         ),
 992                         'all' => array(
 993                                 'message' => 'searchprofile-everything',
 994                                 'tooltip' => 'searchprofile-everything-tooltip',
 995                                 'namespaces' => $nsAllSet,
 996                         ),
 997                         'advanced' => array(
 998                                 'message' => 'searchprofile-advanced',
 999                                 'tooltip' => 'searchprofile-advanced-tooltip',
1000                                 'namespaces' => self::NAMESPACES_CURRENT,
1001                         )
1002                 );
1003
1004                 wfRunHooks( 'SpecialSearchProfiles', array( &$profiles ) );
1005
1006                 foreach ( $profiles as &$data ) {
1007                         if ( !is_array( $data['namespaces'] ) ) {
1008                                 continue;
1009                         }
1010                         sort( $data['namespaces'] );
1011                 }
1012
1013                 return $profiles;
1014         }
1015
1016         /**
1017          * @param string $term
1018          * @return string
1019          */
1020         protected function formHeader( $term ) {
1021                 $out = Xml::openElement( 'div', array( 'class' => 'mw-search-formheader' ) );
1022
1023                 $bareterm = $term;
1024                 if ( $this->startsWithImage( $term ) ) {
1025                         // Deletes prefixes
1026                         $bareterm = substr( $term, strpos( $term, ':' ) + 1 );
1027                 }
1028
1029                 $profiles = $this->getSearchProfiles();
1030                 $lang = $this->getLanguage();
1031
1032                 // Outputs XML for Search Types
1033                 $out .= Xml::openElement( 'div', array( 'class' => 'search-types' ) );
1034                 $out .= Xml::openElement( 'ul' );
1035                 foreach ( $profiles as $id => $profile ) {
1036                         if ( !isset( $profile['parameters'] ) ) {
1037                                 $profile['parameters'] = array();
1038                         }
1039                         $profile['parameters']['profile'] = $id;
1040
1041                         $tooltipParam = isset( $profile['namespace-messages'] ) ?
1042                                 $lang->commaList( $profile['namespace-messages'] ) : null;
1043                         $out .= Xml::tags(
1044                                 'li',
1045                                 array(
1046                                         'class' => $this->profile === $id ? 'current' : 'normal'
1047                                 ),
1048                                 $this->makeSearchLink(
1049                                         $bareterm,
1050                                         array(),
1051                                         $this->msg( $profile['message'] )->text(),
1052                                         $this->msg( $profile['tooltip'], $tooltipParam )->text(),
1053                                         $profile['parameters']
1054                                 )
1055                         );
1056                 }
1057                 $out .= Xml::closeElement( 'ul' );
1058                 $out .= Xml::closeElement( 'div' );
1059                 $out .= Xml::element( 'div', array( 'style' => 'clear:both' ), '', false );
1060                 $out .= Xml::closeElement( 'div' );
1061
1062                 // Hidden stuff
1063                 $opts = array();
1064                 $opts['profile'] = $this->profile;
1065
1066                 if ( $this->profile === 'advanced' ) {
1067                         $out .= $this->powerSearchBox( $term, $opts );
1068                 } else {
1069                         $form = '';
1070                         wfRunHooks( 'SpecialSearchProfileForm', array( $this, &$form, $this->profile, $term, $opts ) );
1071                         $out .= $form;
1072                 }
1073
1074                 return $out;
1075         }
1076
1077         /**
1078          * @param string $term
1079          * @return string
1080          */
1081         protected function shortDialog( $term, $resultsShown, $totalNum ) {
1082                 $out = Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );
1083                 $out .= Html::hidden( 'profile', $this->profile ) . "\n";
1084                 // Term box
1085                 $out .= Html::input( 'search', $term, 'search', array(
1086                         'id' => $this->profile === 'advanced' ? 'powerSearchText' : 'searchText',
1087                         'size' => '50',
1088                         'autofocus',
1089                         'class' => 'mw-ui-input',
1090                 ) ) . "\n";
1091                 $out .= Html::hidden( 'fulltext', 'Search' ) . "\n";
1092                 $out .= Xml::submitButton(
1093                         $this->msg( 'searchbutton' )->text(),
1094                         array( 'class' => array( 'mw-ui-button', 'mw-ui-progressive' ) )
1095                 ) . "\n";
1096
1097                 // Results-info
1098                 if ( $totalNum > 0 ) {
1099                         $top = $this->msg( 'showingresultsheader' )
1100                                 ->numParams( $this->offset + 1, $this->offset + $resultsShown, $totalNum )
1101                                 ->params( wfEscapeWikiText( $term ) )
1102                                 ->numParams( $resultsShown )
1103                                 ->parse();
1104                         $out .= Xml::tags( 'div', array( 'class' => 'results-info' ), $top );
1105                 }
1106
1107                 return $out . $this->didYouMeanHtml;
1108         }
1109
1110         /**
1111          * Make a search link with some target namespaces
1112          *
1113          * @param string $term
1114          * @param array $namespaces Ignored
1115          * @param string $label Link's text
1116          * @param string $tooltip Link's tooltip
1117          * @param array $params Query string parameters
1118          * @return string HTML fragment
1119          */
1120         protected function makeSearchLink( $term, $namespaces, $label, $tooltip, $params = array() ) {
1121                 $opt = $params;
1122                 foreach ( $namespaces as $n ) {
1123                         $opt['ns' . $n] = 1;
1124                 }
1125
1126                 $stParams = array_merge(
1127                         array(
1128                                 'search' => $term,
1129                                 'fulltext' => $this->msg( 'search' )->text()
1130                         ),
1131                         $opt
1132                 );
1133
1134                 return Xml::element(
1135                         'a',
1136                         array(
1137                                 'href' => $this->getPageTitle()->getLocalURL( $stParams ),
1138                                 'title' => $tooltip
1139                         ),
1140                         $label
1141                 );
1142         }
1143
1144         /**
1145          * Check if query starts with image: prefix
1146          *
1147          * @param string $term The string to check
1148          * @return bool
1149          */
1150         protected function startsWithImage( $term ) {
1151                 global $wgContLang;
1152
1153                 $parts = explode( ':', $term );
1154                 if ( count( $parts ) > 1 ) {
1155                         return $wgContLang->getNsIndex( $parts[0] ) == NS_FILE;
1156                 }
1157
1158                 return false;
1159         }
1160
1161         /**
1162          * Check if query starts with all: prefix
1163          *
1164          * @param string $term The string to check
1165          * @return bool
1166          */
1167         protected function startsWithAll( $term ) {
1168
1169                 $allkeyword = $this->msg( 'searchall' )->inContentLanguage()->text();
1170
1171                 $parts = explode( ':', $term );
1172                 if ( count( $parts ) > 1 ) {
1173                         return $parts[0] == $allkeyword;
1174                 }
1175
1176                 return false;
1177         }
1178
1179         /**
1180          * @since 1.18
1181          *
1182          * @return SearchEngine
1183          */
1184         public function getSearchEngine() {
1185                 if ( $this->searchEngine === null ) {
1186                         $this->searchEngine = $this->searchEngineType ?
1187                                 SearchEngine::create( $this->searchEngineType ) : SearchEngine::create();
1188                 }
1189
1190                 return $this->searchEngine;
1191         }
1192
1193         /**
1194          * Current search profile.
1195          * @return null|string
1196          */
1197         function getProfile() {
1198                 return $this->profile;
1199         }
1200
1201         /**
1202          * Current namespaces.
1203          * @return array
1204          */
1205         function getNamespaces() {
1206                 return $this->namespaces;
1207         }
1208
1209         /**
1210          * Users of hook SpecialSearchSetupEngine can use this to
1211          * add more params to links to not lose selection when
1212          * user navigates search results.
1213          * @since 1.18
1214          *
1215          * @param string $key
1216          * @param mixed $value
1217          */
1218         public function setExtraParam( $key, $value ) {
1219                 $this->extraParams[$key] = $value;
1220         }
1221
1222         protected function getGroupName() {
1223                 return 'pages';
1224         }
1225 }