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         public function __construct() {
  33                 parent::__construct( 'Search' );
  34         }
  35
  36         /**
  37          * Entry point
  38          *
  39          * @param $par String or null
  40          */
  41         public function execute( $par ) {
  42                 global $wgRequest, $wgUser, $wgOut;
  43
  44                 $this->setHeaders();
  45                 $this->outputHeader();
  46                 $wgOut->allowClickjacking();
  47
  48                 // Strip underscores from title parameter; most of the time we'll want
  49                 // text form here. But don't strip underscores from actual text params!
  50                 $titleParam = str_replace( '_', ' ', $par );
  51
  52                 // Fetch the search term
  53                 $search = str_replace( "\n", " ", $wgRequest->getText( 'search', $titleParam ) );
  54
  55                 $this->load( $wgRequest, $wgUser );
  56
  57                 if ( $wgRequest->getVal( 'fulltext' )
  58                         || !is_null( $wgRequest->getVal( 'offset' ) )
  59                         || !is_null( $wgRequest->getVal( 'searchx' ) ) )
  60                 {
  61                         $this->showResults( $search );
  62                 } else {
  63                         $this->goResult( $search );
  64                 }
  65         }
  66
  67         /**
  68          * Set up basic search parameters from the request and user settings.
  69          * Typically you'll pass $wgRequest and $wgUser.
  70          *
  71          * @param $request WebRequest
  72          * @param $user User
  73          */
  74         public function load( &$request, &$user ) {
  75                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
  76                 $this->mPrefix = $request->getVal('prefix', '');
  77                 # Extract requested namespaces
  78                 $this->namespaces = $this->powerSearch( $request );
  79                 if( empty( $this->namespaces ) ) {
  80                         $this->namespaces = SearchEngine::userNamespaces( $user );
  81                 }
  82                 $this->searchRedirects = $request->getCheck( 'redirs' );
  83                 $this->searchAdvanced = $request->getVal( 'advanced' );
  84                 $this->active = 'advanced';
  85                 $this->sk = $user->getSkin();
  86                 $this->didYouMeanHtml = ''; # html of did you mean... link
  87                 $this->fulltext = $request->getVal('fulltext');
  88         }
  89
  90         /**
  91          * If an exact title match can be found, jump straight ahead to it.
  92          *
  93          * @param $term String
  94          */
  95         public function goResult( $term ) {
  96                 global $wgOut;
  97                 $this->setupPage( $term );
  98                 # Try to go to page as entered.
  99                 $t = Title::newFromText( $term );
 100                 # If the string cannot be used to create a title
 101                 if( is_null( $t ) ) {
 102                         return $this->showResults( $term );
 103                 }
 104                 # If there's an exact or very near match, jump right there.
 105                 $t = SearchEngine::getNearMatch( $term );
 106
 107                 if ( !wfRunHooks( 'SpecialSearchGo', array( &$t, &$term ) ) ) {
 108                         # Hook requested termination
 109                         return;
 110                 }
 111
 112                 if( !is_null( $t ) ) {
 113                         $wgOut->redirect( $t->getFullURL() );
 114                         return;
 115                 }
 116                 # No match, generate an edit URL
 117                 $t = Title::newFromText( $term );
 118                 if( !is_null( $t ) ) {
 119                         global $wgGoToEdit;
 120                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 121                         wfDebugLog( 'nogomatch', $t->getText(), false );
 122
 123                         # If the feature is enabled, go straight to the edit page
 124                         if( $wgGoToEdit ) {
 125                                 $wgOut->redirect( $t->getFullURL( array( 'action' => 'edit' ) ) );
 126                                 return;
 127                         }
 128                 }
 129                 return $this->showResults( $term );
 130         }
 131
 132         /**
 133          * @param $term String
 134          */
 135         public function showResults( $term ) {
 136                 global $wgOut, $wgUser, $wgDisableTextSearch, $wgContLang, $wgScript;
 137                 wfProfileIn( __METHOD__ );
 138
 139                 $sk = $wgUser->getSkin();
 140
 141                 $this->searchEngine = SearchEngine::create();
 142                 $search =& $this->searchEngine;
 143                 $search->setLimitOffset( $this->limit, $this->offset );
 144                 $search->setNamespaces( $this->namespaces );
 145                 $search->showRedirects = $this->searchRedirects;
 146                 $search->prefix = $this->mPrefix;
 147                 $term = $search->transformSearchTerm($term);
 148
 149                 $this->setupPage( $term );
 150
 151                 if( $wgDisableTextSearch ) {
 152                         global $wgSearchForwardUrl;
 153                         if( $wgSearchForwardUrl ) {
 154                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 155                                 $wgOut->redirect( $url );
 156                                 wfProfileOut( __METHOD__ );
 157                                 return;
 158                         }
 159                         global $wgInputEncoding;
 160                         $wgOut->addHTML(
 161                                 Xml::openElement( 'fieldset' ) .
 162                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 163                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 164                                 wfMsg( 'googlesearch',
 165                                         htmlspecialchars( $term ),
 166                                         htmlspecialchars( $wgInputEncoding ),
 167                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 168                                 ) .
 169                                 Xml::closeElement( 'fieldset' )
 170                         );
 171                         wfProfileOut( __METHOD__ );
 172                         return;
 173                 }
 174
 175                 $t = Title::newFromText( $term );
 176
 177                 // fetch search results
 178                 $rewritten = $search->replacePrefixes($term);
 179
 180                 $titleMatches = $search->searchTitle( $rewritten );
 181                 if( !($titleMatches instanceof SearchResultTooMany))
 182                         $textMatches = $search->searchText( $rewritten );
 183
 184                 // did you mean... suggestions
 185                 if( $textMatches && $textMatches->hasSuggestion() ) {
 186                         $st = SpecialPage::getTitleFor( 'Search' );
 187
 188                         # mirror Go/Search behaviour of original request ..
 189                         $didYouMeanParams = array( 'search' => $textMatches->getSuggestionQuery() );
 190
 191                         if($this->fulltext != null)
 192                                 $didYouMeanParams['fulltext'] = $this->fulltext;
 193
 194                         $stParams = array_merge(
 195                                 $didYouMeanParams,
 196                                 $this->powerSearchOptions()
 197                         );
 198
 199                         $suggestionSnippet = $textMatches->getSuggestionSnippet();
 200
 201                         if( $suggestionSnippet == '' )
 202                                 $suggestionSnippet = null;
 203
 204                         $suggestLink = $sk->linkKnown(
 205                                 $st,
 206                                 $suggestionSnippet,
 207                                 array(),
 208                                 $stParams
 209                         );
 210
 211                         $this->didYouMeanHtml = '<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>';
 212                 }
 213                 // start rendering the page
 214                 $wgOut->addHtml(
 215                         Xml::openElement(
 216                                 'form',
 217                                 array(
 218                                         'id' => ( $this->searchAdvanced ? 'powersearch' : 'search' ),
 219                                         'method' => 'get',
 220                                         'action' => $wgScript
 221                                 )
 222                         )
 223                 );
 224                 $wgOut->addHtml(
 225                         Xml::openElement( 'table', array( 'id'=>'mw-search-top-table', 'border'=>0, 'cellpadding'=>0, 'cellspacing'=>0 ) ) .
 226                         Xml::openElement( 'tr' ) .
 227                         Xml::openElement( 'td' ) . "\n" .
 228                         $this->shortDialog( $term ) .
 229                         Xml::closeElement('td') .
 230                         Xml::closeElement('tr') .
 231                         Xml::closeElement('table')
 232                 );
 233
 234                 // Sometimes the search engine knows there are too many hits
 235                 if( $titleMatches instanceof SearchResultTooMany ) {
 236                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 237                         wfProfileOut( __METHOD__ );
 238                         return;
 239                 }
 240
 241                 $filePrefix = $wgContLang->getFormattedNsText(NS_FILE).':';
 242                 if( trim( $term ) === '' || $filePrefix === trim( $term ) ) {
 243                         $wgOut->addHTML( $this->formHeader($term, 0, 0));
 244                         if( $this->searchAdvanced ) {
 245                                 $wgOut->addHTML( $this->powerSearchBox( $term ) );
 246                         }
 247                         $wgOut->addHTML( '</form>' );
 248                         // Empty query -- straight view of search form
 249                         wfProfileOut( __METHOD__ );
 250                         return;
 251                 }
 252
 253                 // Get number of results
 254                 $titleMatchesNum = $titleMatches ? $titleMatches->numRows() : 0;
 255                 $textMatchesNum = $textMatches ? $textMatches->numRows() : 0;
 256                 // Total initial query matches (possible false positives)
 257                 $num = $titleMatchesNum + $textMatchesNum;
 258
 259                 // Get total actual results (after second filtering, if any)
 260                 $numTitleMatches = $titleMatches && !is_null( $titleMatches->getTotalHits() ) ?
 261                         $titleMatches->getTotalHits() : $titleMatchesNum;
 262                 $numTextMatches = $textMatches && !is_null( $textMatches->getTotalHits() ) ?
 263                         $textMatches->getTotalHits() : $textMatchesNum;
 264
 265                 // get total number of results if backend can calculate it
 266                 $totalRes = 0;
 267                 if($titleMatches && !is_null( $titleMatches->getTotalHits() ) )
 268                         $totalRes += $titleMatches->getTotalHits();
 269                 if($textMatches && !is_null( $textMatches->getTotalHits() ))
 270                         $totalRes += $textMatches->getTotalHits();
 271
 272                 // show number of results and current offset
 273                 $wgOut->addHTML( $this->formHeader($term, $num, $totalRes));
 274                 if( $this->searchAdvanced ) {
 275                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 276                 }
 277
 278                 $wgOut->addHtml( Xml::closeElement( 'form' ) );
 279                 $wgOut->addHtml( "<div class='searchresults'>" );
 280
 281                 // prev/next links
 282                 if( $num || $this->offset ) {
 283                         // Show the create link ahead
 284                         $this->showCreateLink( $t );
 285                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
 286                                 SpecialPage::getTitleFor( 'Search' ),
 287                                 wfArrayToCGI( $this->powerSearchOptions(), array( 'search' => $term ) ),
 288                                 max( $titleMatchesNum, $textMatchesNum ) < $this->limit
 289                         );
 290                         //$wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
 291                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 292                 } else {
 293                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 294                 }
 295
 296                 $wgOut->parserOptions()->setEditSection( false );
 297                 if( $titleMatches ) {
 298                         if( $numTitleMatches > 0 ) {
 299                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
 300                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
 301                         }
 302                         $titleMatches->free();
 303                 }
 304                 if( $textMatches ) {
 305                         // output appropriate heading
 306                         if( $numTextMatches > 0 && $numTitleMatches > 0 ) {
 307                                 // if no title matches the heading is redundant
 308                                 $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
 309                         } elseif( $totalRes == 0 ) {
 310                                 # Don't show the 'no text matches' if we received title matches
 311                                 # $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
 312                         }
 313                         // show interwiki results if any
 314                         if( $textMatches->hasInterwikiResults() ) {
 315                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
 316                         }
 317                         // show results
 318                         if( $numTextMatches > 0 ) {
 319                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
 320                         }
 321
 322                         $textMatches->free();
 323                 }
 324                 if( $num === 0 ) {
 325                         $wgOut->wrapWikiMsg( "<p class=\"mw-search-nonefound\">\n$1</p>", array( 'search-nonefound', wfEscapeWikiText( $term ) ) );
 326                         $this->showCreateLink( $t );
 327                 }
 328                 $wgOut->addHtml( "</div>" );
 329
 330                 if( $num || $this->offset ) {
 331                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 332                 }
 333                 wfProfileOut( __METHOD__ );
 334         }
 335
 336         protected function showCreateLink( $t ) {
 337                 global $wgOut;
 338
 339                 // show direct page/create link if applicable
 340                 $messageName = null;
 341                 if( !is_null($t) ) {
 342                         if( $t->isKnown() ) {
 343                                 $messageName = 'searchmenu-exists';
 344                         } elseif( $t->userCan( 'create' ) ) {
 345                                 $messageName = 'searchmenu-new';
 346                         } else {
 347                                 $messageName = 'searchmenu-new-nocreate';
 348                         }
 349                 }
 350                 if( $messageName ) {
 351                         $wgOut->wrapWikiMsg( "<p class=\"mw-search-createlink\">\n$1</p>", array( $messageName, wfEscapeWikiText( $t->getPrefixedText() ) ) );
 352                 } else {
 353                         // preserve the paragraph for margins etc...
 354                         $wgOut->addHtml( '<p></p>' );
 355                 }
 356         }
 357
 358         /**
 359          *
 360          */
 361         protected function setupPage( $term ) {
 362                 global $wgOut;
 363                 // Figure out the active search profile header
 364                 if( $this->searchAdvanced ) {
 365                         $this->active = 'advanced';
 366                 } else {
 367                         $profiles = $this->getSearchProfiles();
 368
 369                         foreach( $profiles as $key => $data ) {
 370                                 if ( $this->namespaces == $data['namespaces'] && $key != 'advanced')
 371                                         $this->active = $key;
 372                         }
 373
 374                 }
 375                 # Should advanced UI be used?
 376                 $this->searchAdvanced = ($this->active === 'advanced');
 377                 if( !empty( $term ) ) {
 378                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
 379                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term ) ) );
 380                 }
 381                 // add javascript specific to special:search
 382                 $wgOut->addModules( 'mediawiki.legacy.search' );
 383                 $wgOut->addModules( 'mediawiki.special.search' );
 384         }
 385
 386         /**
 387          * Extract "power search" namespace settings from the request object,
 388          * returning a list of index numbers to search.
 389          *
 390          * @param $request WebRequest
 391          * @return Array
 392          */
 393         protected function powerSearch( &$request ) {
 394                 $arr = array();
 395                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 396                         if( $request->getCheck( 'ns' . $ns ) ) {
 397                                 $arr[] = $ns;
 398                         }
 399                 }
 400                 return $arr;
 401         }
 402
 403         /**
 404          * Reconstruct the 'power search' options for links
 405          *
 406          * @return Array
 407          */
 408         protected function powerSearchOptions() {
 409                 $opt = array();
 410                 foreach( $this->namespaces as $n ) {
 411                         $opt['ns' . $n] = 1;
 412                 }
 413                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 414                 if( $this->searchAdvanced ) {
 415                         $opt['advanced'] = $this->searchAdvanced;
 416                 }
 417                 return $opt;
 418         }
 419
 420         /**
 421          * Show whole set of results
 422          *
 423          * @param $matches SearchResultSet
 424          */
 425         protected function showMatches( &$matches ) {
 426                 global $wgContLang;
 427                 wfProfileIn( __METHOD__ );
 428
 429                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 430
 431                 $out = "";
 432                 $infoLine = $matches->getInfo();
 433                 if( !is_null($infoLine) ) {
 434                         $out .= "\n<!-- {$infoLine} -->\n";
 435                 }
 436                 $out .= "<ul class='mw-search-results'>\n";
 437                 while( $result = $matches->next() ) {
 438                         $out .= $this->showHit( $result, $terms );
 439                 }
 440                 $out .= "</ul>\n";
 441
 442                 // convert the whole thing to desired language variant
 443                 $out = $wgContLang->convert( $out );
 444                 wfProfileOut( __METHOD__ );
 445                 return $out;
 446         }
 447
 448         /**
 449          * Format a single hit result
 450          *
 451          * @param $result SearchResult
 452          * @param $terms Array: terms to highlight
 453          */
 454         protected function showHit( $result, $terms ) {
 455                 global $wgLang, $wgUser;
 456                 wfProfileIn( __METHOD__ );
 457
 458                 if( $result->isBrokenTitle() ) {
 459                         wfProfileOut( __METHOD__ );
 460                         return "<!-- Broken link in search result -->\n";
 461                 }
 462
 463                 $sk = $wgUser->getSkin();
 464                 $t = $result->getTitle();
 465
 466                 $titleSnippet = $result->getTitleSnippet($terms);
 467
 468                 if( $titleSnippet == '' )
 469                         $titleSnippet = null;
 470
 471                 $link_t = clone $t;
 472
 473                 wfRunHooks( 'ShowSearchHitTitle',
 474                                         array( &$link_t, &$titleSnippet, $result, $terms, $this ) );
 475
 476                 $link = $this->sk->linkKnown(
 477                         $link_t,
 478                         $titleSnippet
 479                 );
 480
 481                 //If page content is not readable, just return the title.
 482                 //This is not quite safe, but better than showing excerpts from non-readable pages
 483                 //Note that hiding the entry entirely would screw up paging.
 484                 if( !$t->userCanRead() ) {
 485                         wfProfileOut( __METHOD__ );
 486                         return "<li>{$link}</li>\n";
 487                 }
 488
 489                 // If the page doesn't *exist*... our search index is out of date.
 490                 // The least confusing at this point is to drop the result.
 491                 // You may get less results, but... oh well. :P
 492                 if( $result->isMissingRevision() ) {
 493                         wfProfileOut( __METHOD__ );
 494                         return "<!-- missing page " . htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
 495                 }
 496
 497                 // format redirects / relevant sections
 498                 $redirectTitle = $result->getRedirectTitle();
 499                 $redirectText = $result->getRedirectSnippet($terms);
 500                 $sectionTitle = $result->getSectionTitle();
 501                 $sectionText = $result->getSectionSnippet($terms);
 502                 $redirect = '';
 503
 504                 if( !is_null($redirectTitle) ) {
 505                         if( $redirectText == '' )
 506                                 $redirectText = null;
 507
 508                         $redirect = "<span class='searchalttitle'>" .
 509                                 wfMsg(
 510                                         'search-redirect',
 511                                         $this->sk->linkKnown(
 512                                                 $redirectTitle,
 513                                                 $redirectText
 514                                         )
 515                                 ) .
 516                                 "</span>";
 517                 }
 518
 519                 $section = '';
 520
 521
 522                 if( !is_null($sectionTitle) ) {
 523                         if( $sectionText == '' )
 524                                 $sectionText = null;
 525
 526                         $section = "<span class='searchalttitle'>" .
 527                                 wfMsg(
 528                                         'search-section', $this->sk->linkKnown(
 529                                                 $sectionTitle,
 530                                                 $sectionText
 531                                         )
 532                                 ) .
 533                                 "</span>";
 534                 }
 535
 536                 // format text extract
 537                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
 538
 539                 // format score
 540                 if( is_null( $result->getScore() ) ) {
 541                         // Search engine doesn't report scoring info
 542                         $score = '';
 543                 } else {
 544                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 545                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
 546                                 . ' - ';
 547                 }
 548
 549                 // format description
 550                 $byteSize = $result->getByteSize();
 551                 $wordCount = $result->getWordCount();
 552                 $timestamp = $result->getTimestamp();
 553                 $size = wfMsgExt(
 554                         'search-result-size',
 555                         array( 'parsemag', 'escape' ),
 556                         $this->sk->formatSize( $byteSize ),
 557                         $wgLang->formatNum( $wordCount )
 558                 );
 559
 560                 if( $t->getNamespace() == NS_CATEGORY ) {
 561                         $cat = Category::newFromTitle( $t );
 562                         $size = wfMsgExt(
 563                                 'search-result-category-size',
 564                                 array( 'parsemag', 'escape' ),
 565                                 $wgLang->formatNum( $cat->getPageCount() ),
 566                                 $wgLang->formatNum( $cat->getSubcatCount() ),
 567                                 $wgLang->formatNum( $cat->getFileCount() )
 568                         );
 569                 }
 570
 571                 $date = $wgLang->timeanddate( $timestamp );
 572
 573                 // link to related articles if supported
 574                 $related = '';
 575                 if( $result->hasRelated() ) {
 576                         $st = SpecialPage::getTitleFor( 'Search' );
 577                         $stParams = array_merge(
 578                                 $this->powerSearchOptions(),
 579                                 array(
 580                                         'search' => wfMsgForContent( 'searchrelated' ) . ':' . $t->getPrefixedText(),
 581                                         'fulltext' => wfMsg( 'search' )
 582                                 )
 583                         );
 584
 585                         $related = ' -- ' . $sk->linkKnown(
 586                                 $st,
 587                                 wfMsg('search-relatedarticle'),
 588                                 array(),
 589                                 $stParams
 590                         );
 591                 }
 592
 593                 // Include a thumbnail for media files...
 594                 if( $t->getNamespace() == NS_FILE ) {
 595                         $img = wfFindFile( $t );
 596                         if( $img ) {
 597                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 598                                 if( $thumb ) {
 599                                         $desc = wfMsgExt( 'parentheses', 'parseinline', $img->getShortDesc() );
 600                                         wfProfileOut( __METHOD__ );
 601                                         // Float doesn't seem to interact well with the bullets.
 602                                         // Table messes up vertical alignment of the bullets.
 603                                         // Bullets are therefore disabled (didn't look great anyway).
 604                                         return "<li>" .
 605                                                 '<table class="searchResultImage">' .
 606                                                 '<tr>' .
 607                                                 '<td width="120" align="center" valign="top">' .
 608                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 609                                                 '</td>' .
 610                                                 '<td valign="top">' .
 611                                                 $link .
 612                                                 $extract .
 613                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 614                                                 '</td>' .
 615                                                 '</tr>' .
 616                                                 '</table>' .
 617                                                 "</li>\n";
 618                                 }
 619                         }
 620                 }
 621
 622                 wfProfileOut( __METHOD__ );
 623                 return "<li><div class='mw-search-result-heading'>{$link} {$redirect} {$section}</div> {$extract}\n" .
 624                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 625                         "</li>\n";
 626
 627         }
 628
 629         /**
 630          * Show results from other wikis
 631          *
 632          * @param $matches SearchResultSet
 633          * @param $query String
 634          */
 635         protected function showInterwiki( &$matches, $query ) {
 636                 global $wgContLang;
 637                 wfProfileIn( __METHOD__ );
 638                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 639
 640                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".
 641                         wfMsg('search-interwiki-caption')."</div>\n";
 642                 $out .= "<ul class='mw-search-iwresults'>\n";
 643
 644                 // work out custom project captions
 645                 $customCaptions = array();
 646                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
 647                 foreach($customLines as $line) {
 648                         $parts = explode(":",$line,2);
 649                         if(count($parts) == 2) // validate line
 650                                 $customCaptions[$parts[0]] = $parts[1];
 651                 }
 652
 653                 $prev = null;
 654                 while( $result = $matches->next() ) {
 655                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
 656                         $prev = $result->getInterwikiPrefix();
 657                 }
 658                 // TODO: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 659                 $out .= "</ul></div>\n";
 660
 661                 // convert the whole thing to desired language variant
 662                 $out = $wgContLang->convert( $out );
 663                 wfProfileOut( __METHOD__ );
 664                 return $out;
 665         }
 666
 667         /**
 668          * Show single interwiki link
 669          *
 670          * @param $result SearchResult
 671          * @param $lastInterwiki String
 672          * @param $terms Array
 673          * @param $query String
 674          * @param $customCaptions Array: iw prefix -> caption
 675          */
 676         protected function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
 677                 wfProfileIn( __METHOD__ );
 678
 679                 if( $result->isBrokenTitle() ) {
 680                         wfProfileOut( __METHOD__ );
 681                         return "<!-- Broken link in search result -->\n";
 682                 }
 683
 684                 $t = $result->getTitle();
 685
 686                 $titleSnippet = $result->getTitleSnippet($terms);
 687
 688                 if( $titleSnippet == '' )
 689                         $titleSnippet = null;
 690
 691                 $link = $this->sk->linkKnown(
 692                         $t,
 693                         $titleSnippet
 694                 );
 695
 696                 // format redirect if any
 697                 $redirectTitle = $result->getRedirectTitle();
 698                 $redirectText = $result->getRedirectSnippet($terms);
 699                 $redirect = '';
 700                 if( !is_null($redirectTitle) ) {
 701                         if( $redirectText == '' )
 702                                 $redirectText = null;
 703
 704                         $redirect = "<span class='searchalttitle'>" .
 705                                 wfMsg(
 706                                         'search-redirect',
 707                                         $this->sk->linkKnown(
 708                                                 $redirectTitle,
 709                                                 $redirectText
 710                                         )
 711                                 ) .
 712                                 "</span>";
 713                 }
 714
 715                 $out = "";
 716                 // display project name
 717                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()) {
 718                         if( key_exists($t->getInterwiki(),$customCaptions) )
 719                                 // captions from 'search-interwiki-custom'
 720                                 $caption = $customCaptions[$t->getInterwiki()];
 721                         else{
 722                                 // default is to show the hostname of the other wiki which might suck
 723                                 // if there are many wikis on one hostname
 724                                 $parsed = parse_url($t->getFullURL());
 725                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
 726                         }
 727                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 728                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
 729                         $searchLink = $this->sk->linkKnown(
 730                                 $searchTitle,
 731                                 wfMsg('search-interwiki-more'),
 732                                 array(),
 733                                 array(
 734                                         'search' => $query,
 735                                         'fulltext' => 'Search'
 736                                 )
 737                         );
 738                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
 739                                 {$searchLink}</span>{$caption}</div>\n<ul>";
 740                 }
 741
 742                 $out .= "<li>{$link} {$redirect}</li>\n";
 743                 wfProfileOut( __METHOD__ );
 744                 return $out;
 745         }
 746
 747
 748         /**
 749          * Generates the power search box at bottom of [[Special:Search]]
 750          *
 751          * @param $term String: search term
 752          * @return String: HTML form
 753          */
 754         protected function powerSearchBox( $term ) {
 755                 // Groups namespaces into rows according to subject
 756                 $rows = array();
 757                 foreach( SearchEngine::searchableNamespaces() as $namespace => $name ) {
 758                         $subject = MWNamespace::getSubject( $namespace );
 759                         if( !array_key_exists( $subject, $rows ) ) {
 760                                 $rows[$subject] = "";
 761                         }
 762                         $name = str_replace( '_', ' ', $name );
 763                         if( $name == '' ) {
 764                                 $name = wfMsg( 'blanknamespace' );
 765                         }
 766                         $rows[$subject] .=
 767                                 Xml::openElement(
 768                                         'td', array( 'style' => 'white-space: nowrap' )
 769                                 ) .
 770                                 Xml::checkLabel(
 771                                         $name,
 772                                         "ns{$namespace}",
 773                                         "mw-search-ns{$namespace}",
 774                                         in_array( $namespace, $this->namespaces )
 775                                 ) .
 776                                 Xml::closeElement( 'td' );
 777                 }
 778                 $rows = array_values( $rows );
 779                 $numRows = count( $rows );
 780
 781                 // Lays out namespaces in multiple floating two-column tables so they'll
 782                 // be arranged nicely while still accommodating different screen widths
 783                 $namespaceTables = '';
 784                 for( $i = 0; $i < $numRows; $i += 4 ) {
 785                         $namespaceTables .= Xml::openElement(
 786                                 'table',
 787                                 array( 'cellpadding' => 0, 'cellspacing' => 0, 'border' => 0 )
 788                         );
 789                         for( $j = $i; $j < $i + 4 && $j < $numRows; $j++ ) {
 790                                 $namespaceTables .= Xml::tags( 'tr', null, $rows[$j] );
 791                         }
 792                         $namespaceTables .= Xml::closeElement( 'table' );
 793                 }
 794                 // Show redirects check only if backend supports it
 795                 $redirects = '';
 796                 if( $this->searchEngine->acceptListRedirects() ) {
 797                         $redirects =
 798                                 Xml::check(
 799                                         'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' )
 800                                 ) .
 801                                 ' ' .
 802                                 Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
 803                 }
 804                 // Return final output
 805                 return
 806                         Xml::openElement(
 807                                 'fieldset',
 808                                 array( 'id' => 'mw-searchoptions', 'style' => 'margin:0em;' )
 809                         ) .
 810                         Xml::element( 'legend', null, wfMsg('powersearch-legend') ) .
 811                         Xml::tags( 'h4', null, wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) ) .
 812                         Xml::tags(
 813                                 'div',
 814                                 array( 'id' => 'mw-search-togglebox' ),
 815                                 Xml::label( wfMsg( 'powersearch-togglelabel' ), 'mw-search-togglelabel' ) .
 816                                         Xml::element(
 817                                                 'input',
 818                                                 array(
 819                                                         'type'=>'button',
 820                                                         'id' => 'mw-search-toggleall',
 821                                                         'onclick' => 'mwToggleSearchCheckboxes("all");',
 822                                                         'value' => wfMsg( 'powersearch-toggleall' )
 823                                                 )
 824                                         ) .
 825                                         Xml::element(
 826                                                 'input',
 827                                                 array(
 828                                                         'type'=>'button',
 829                                                         'id' => 'mw-search-togglenone',
 830                                                         'onclick' => 'mwToggleSearchCheckboxes("none");',
 831                                                         'value' => wfMsg( 'powersearch-togglenone' )
 832                                                 )
 833                                         )
 834                         ) .
 835                         Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
 836                         $namespaceTables .
 837                         Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
 838                         $redirects .
 839                         Html::hidden( 'title', SpecialPage::getTitleFor( 'Search' )->getPrefixedText() ) .
 840                         Html::hidden( 'advanced', $this->searchAdvanced ) .
 841                         Html::hidden( 'fulltext', 'Advanced search' ) .
 842                         Xml::closeElement( 'fieldset' );
 843         }
 844
 845         protected function getSearchProfiles() {
 846                 // Builds list of Search Types (profiles)
 847                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 848
 849                 $profiles = array(
 850                         'default' => array(
 851                                 'message' => 'searchprofile-articles',
 852                                 'tooltip' => 'searchprofile-articles-tooltip',
 853                                 'namespaces' => SearchEngine::defaultNamespaces(),
 854                                 'namespace-messages' => SearchEngine::namespacesAsText(
 855                                         SearchEngine::defaultNamespaces()
 856                                 ),
 857                         ),
 858                         'images' => array(
 859                                 'message' => 'searchprofile-images',
 860                                 'tooltip' => 'searchprofile-images-tooltip',
 861                                 'namespaces' => array( NS_FILE ),
 862                         ),
 863                         'help' => array(
 864                                 'message' => 'searchprofile-project',
 865                                 'tooltip' => 'searchprofile-project-tooltip',
 866                                 'namespaces' => SearchEngine::helpNamespaces(),
 867                                 'namespace-messages' => SearchEngine::namespacesAsText(
 868                                         SearchEngine::helpNamespaces()
 869                                 ),
 870                         ),
 871                         'all' => array(
 872                                 'message' => 'searchprofile-everything',
 873                                 'tooltip' => 'searchprofile-everything-tooltip',
 874                                 'namespaces' => $nsAllSet,
 875                         ),
 876                         'advanced' => array(
 877                                 'message' => 'searchprofile-advanced',
 878                                 'tooltip' => 'searchprofile-advanced-tooltip',
 879                                 'namespaces' => $this->namespaces,
 880                                 'parameters' => array( 'advanced' => 1 ),
 881                         )
 882                 );
 883
 884                 wfRunHooks( 'SpecialSearchProfiles', array( &$profiles ) );
 885
 886                 foreach( $profiles as &$data ) {
 887                         sort($data['namespaces']);
 888                 }
 889
 890                 return $profiles;
 891         }
 892
 893         protected function formHeader( $term, $resultsShown, $totalNum ) {
 894                 global $wgLang;
 895
 896                 $out = Xml::openElement('div', array( 'class' =>  'mw-search-formheader' ) );
 897
 898                 $bareterm = $term;
 899                 if( $this->startsWithImage( $term ) ) {
 900                         // Deletes prefixes
 901                         $bareterm = substr( $term, strpos( $term, ':' ) + 1 );
 902                 }
 903
 904                 $profiles = $this->getSearchProfiles();
 905
 906                 // Outputs XML for Search Types
 907                 $out .= Xml::openElement( 'div', array( 'class' => 'search-types' ) );
 908                 $out .= Xml::openElement( 'ul' );
 909                 foreach ( $profiles as $id => $profile ) {
 910                         $tooltipParam = isset( $profile['namespace-messages'] ) ?
 911                                 $wgLang->commaList( $profile['namespace-messages'] ) : null;
 912                         $out .= Xml::tags(
 913                                 'li',
 914                                 array(
 915                                         'class' => $this->active == $id ? 'current' : 'normal'
 916                                 ),
 917                                 $this->makeSearchLink(
 918                                         $bareterm,
 919                                         $profile['namespaces'],
 920                                         wfMsg( $profile['message'] ),
 921                                         wfMsg( $profile['tooltip'], $tooltipParam ),
 922                                         isset( $profile['parameters'] ) ? $profile['parameters'] : array()
 923                                 )
 924                         );
 925                 }
 926                 $out .= Xml::closeElement( 'ul' );
 927                 $out .= Xml::closeElement('div') ;
 928
 929                 // Results-info
 930                 if ( $resultsShown > 0 ) {
 931                         if ( $totalNum > 0 ){
 932                                 $top = wfMsgExt( 'showingresultsheader', array( 'parseinline' ),
 933                                         $wgLang->formatNum( $this->offset + 1 ),
 934                                         $wgLang->formatNum( $this->offset + $resultsShown ),
 935                                         $wgLang->formatNum( $totalNum ),
 936                                         wfEscapeWikiText( $term ),
 937                                         $wgLang->formatNum( $resultsShown )
 938                                 );
 939                         } elseif ( $resultsShown >= $this->limit ) {
 940                                 $top = wfShowingResults( $this->offset, $this->limit );
 941                         } else {
 942                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $resultsShown );
 943                         }
 944                         $out .= Xml::tags( 'div', array( 'class' => 'results-info' ),
 945                                 Xml::tags( 'ul', null, Xml::tags( 'li', null, $top ) )
 946                         );
 947                 }
 948
 949                 $out .= Xml::element( 'div', array( 'style' => 'clear:both' ), '', false );
 950                 $out .= Xml::closeElement('div');
 951
 952                 // Adds hidden namespace fields
 953                 if ( !$this->searchAdvanced ) {
 954                         foreach( $this->namespaces as $ns ) {
 955                                 $out .= Html::hidden( "ns{$ns}", '1' );
 956                         }
 957                 }
 958
 959                 return $out;
 960         }
 961
 962         protected function shortDialog( $term ) {
 963                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 964                 $out = Html::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n";
 965                 // Keep redirect setting
 966                 $out .= Html::hidden( "redirs", (int)$this->searchRedirects ) . "\n";
 967                 // Term box
 968                 $out .= Html::input( 'search', $term, 'search', array(
 969                         'id' => $this->searchAdvanced ? 'powerSearchText' : 'searchText',
 970                         'size' => '50',
 971                         'autofocus'
 972                 ) ) . "\n";
 973                 $out .= Html::hidden( 'fulltext', 'Search' ) . "\n";
 974                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ) ) . "\n";
 975                 return $out . $this->didYouMeanHtml;
 976         }
 977
 978         /**
 979          * Make a search link with some target namespaces
 980          *
 981          * @param $term String
 982          * @param $namespaces Array
 983          * @param $label String: link's text
 984          * @param $tooltip String: link's tooltip
 985          * @param $params Array: query string parameters
 986          * @return String: HTML fragment
 987          */
 988         protected function makeSearchLink( $term, $namespaces, $label, $tooltip, $params=array() ) {
 989                 $opt = $params;
 990                 foreach( $namespaces as $n ) {
 991                         $opt['ns' . $n] = 1;
 992                 }
 993                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 994
 995                 $st = SpecialPage::getTitleFor( 'Search' );
 996                 $stParams = array_merge(
 997                         array(
 998                                 'search' => $term,
 999                                 'fulltext' => wfMsg( 'search' )
1000                         ),
1001                         $opt
1002                 );
1003
1004                 return Xml::element(
1005                         'a',
1006                         array(
1007                                 'href' => $st->getLocalURL( $stParams ),
1008                                 'title' => $tooltip,
1009                                 'onmousedown' => 'mwSearchHeaderClick(this);',
1010                                 'onkeydown' => 'mwSearchHeaderClick(this);'),
1011                         $label
1012                 );
1013         }
1014
1015         /**
1016          * Check if query starts with image: prefix
1017          *
1018          * @param $term String: the string to check
1019          * @return Boolean
1020          */
1021         protected function startsWithImage( $term ) {
1022                 global $wgContLang;
1023
1024                 $p = explode( ':', $term );
1025                 if( count( $p ) > 1 ) {
1026                         return $wgContLang->getNsIndex( $p[0] ) == NS_FILE;
1027                 }
1028                 return false;
1029         }
1030
1031         /**
1032          * Check if query starts with all: prefix
1033          *
1034          * @param $term String: the string to check
1035          * @return Boolean
1036          */
1037         protected function startsWithAll( $term ) {
1038
1039                 $allkeyword = wfMsgForContent('searchall');
1040
1041                 $p = explode( ':', $term );
1042                 if( count( $p ) > 1 ) {
1043                         return $p[0]  == $allkeyword;
1044                 }
1045                 return false;
1046         }
1047 }
1048