includes/specials/SpecialSearch.php

   1 <?php
   2 /**
   3  * Copyright (C) 2004 Brion Vibber <brion@pobox.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  */
  20
  21 /**
  22  * Run text & title search and display the output
  23  * @file
  24  * @ingroup SpecialPage
  25  */
  26
  27 /**
  28  * Entry point
  29  *
  30  * @param $par String: (default '')
  31  */
  32 function wfSpecialSearch( $par = '' ) {
  33         global $wgRequest, $wgUser;
  34         // Strip underscores from title parameter; most of the time we'll want
  35         // text form here. But don't strip underscores from actual text params!
  36         $titleParam = str_replace( '_', ' ', $par );
  37         // Fetch the search term
  38         $search = str_replace( "\n", " ", $wgRequest->getText( 'search', $titleParam ) );
  39         $searchPage = new SpecialSearch( $wgRequest, $wgUser );
  40         if( $wgRequest->getVal( 'fulltext' )
  41                 || !is_null( $wgRequest->getVal( 'offset' ))
  42                 || !is_null( $wgRequest->getVal( 'searchx' )) )
  43         {
  44                 $searchPage->showResults( $search );
  45         } else {
  46                 $searchPage->goResult( $search );
  47         }
  48 }
  49
  50 /**
  51  * implements Special:Search - Run text & title search and display the output
  52  * @ingroup SpecialPage
  53  */
  54 class SpecialSearch {
  55
  56         /**
  57          * Set up basic search parameters from the request and user settings.
  58          * Typically you'll pass $wgRequest and $wgUser.
  59          *
  60          * @param $request WebRequest
  61          * @param $user User
  62          */
  63         public function __construct( &$request, &$user ) {
  64                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
  65                 $this->mPrefix = $request->getVal('prefix', '');
  66                 # Extract requested namespaces
  67                 $this->namespaces = $this->powerSearch( $request );
  68                 if( empty( $this->namespaces ) ) {
  69                         $this->namespaces = SearchEngine::userNamespaces( $user );
  70                 }
  71                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
  72                 $this->searchAdvanced = $request->getVal( 'advanced' );
  73                 $this->active = 'advanced';
  74                 $this->sk = $user->getSkin();
  75                 $this->didYouMeanHtml = ''; # html of did you mean... link
  76                 $this->fulltext = $request->getVal('fulltext');
  77         }
  78
  79         /**
  80          * If an exact title match can be found, jump straight ahead to it.
  81          *
  82          * @param $term String
  83          */
  84         public function goResult( $term ) {
  85                 global $wgOut;
  86                 $this->setupPage( $term );
  87                 # Try to go to page as entered.
  88                 $t = Title::newFromText( $term );
  89                 # If the string cannot be used to create a title
  90                 if( is_null( $t ) ) {
  91                         return $this->showResults( $term );
  92                 }
  93                 # If there's an exact or very near match, jump right there.
  94                 $t = SearchEngine::getNearMatch( $term );
  95                 if( !is_null( $t ) ) {
  96                         wfRunHooks( 'SpecialSearchGomatch', array( &$t ) );
  97                         $wgOut->redirect( $t->getFullURL() );
  98                         return;
  99                 }
 100                 # No match, generate an edit URL
 101                 $t = Title::newFromText( $term );
 102                 if( !is_null( $t ) ) {
 103                         global $wgGoToEdit;
 104                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 105                         # If the feature is enabled, go straight to the edit page
 106                         if( $wgGoToEdit ) {
 107                                 $wgOut->redirect( $t->getFullURL( array( 'action' => 'edit' ) ) );
 108                                 return;
 109                         }
 110                 }
 111                 return $this->showResults( $term );
 112         }
 113
 114         /**
 115          * @param $term String
 116          */
 117         public function showResults( $term ) {
 118                 global $wgOut, $wgUser, $wgDisableTextSearch, $wgContLang, $wgScript;
 119                 wfProfileIn( __METHOD__ );
 120
 121                 $sk = $wgUser->getSkin();
 122
 123                 $this->searchEngine = SearchEngine::create();
 124                 $search =& $this->searchEngine;
 125                 $search->setLimitOffset( $this->limit, $this->offset );
 126                 $search->setNamespaces( $this->namespaces );
 127                 $search->showRedirects = $this->searchRedirects;
 128                 $search->prefix = $this->mPrefix;
 129                 $term = $search->transformSearchTerm($term);
 130
 131                 $this->setupPage( $term );
 132
 133                 if( $wgDisableTextSearch ) {
 134                         global $wgSearchForwardUrl;
 135                         if( $wgSearchForwardUrl ) {
 136                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 137                                 $wgOut->redirect( $url );
 138                                 wfProfileOut( __METHOD__ );
 139                                 return;
 140                         }
 141                         global $wgInputEncoding;
 142                         $wgOut->addHTML(
 143                                 Xml::openElement( 'fieldset' ) .
 144                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 145                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 146                                 wfMsg( 'googlesearch',
 147                                         htmlspecialchars( $term ),
 148                                         htmlspecialchars( $wgInputEncoding ),
 149                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 150                                 ) .
 151                                 Xml::closeElement( 'fieldset' )
 152                         );
 153                         wfProfileOut( __METHOD__ );
 154                         return;
 155                 }
 156
 157                 $t = Title::newFromText( $term );
 158
 159                 // fetch search results
 160                 $rewritten = $search->replacePrefixes($term);
 161
 162                 $titleMatches = $search->searchTitle( $rewritten );
 163                 if( !($titleMatches instanceof SearchResultTooMany))
 164                         $textMatches = $search->searchText( $rewritten );
 165
 166                 // did you mean... suggestions
 167                 if( $textMatches && $textMatches->hasSuggestion() ) {
 168                         $st = SpecialPage::getTitleFor( 'Search' );
 169
 170                         # mirror Go/Search behaviour of original request ..
 171                         $didYouMeanParams = array( 'search' => $textMatches->getSuggestionQuery() );
 172
 173                         if($this->fulltext != null)
 174                                 $didYouMeanParams['fulltext'] = $this->fulltext;
 175
 176                         $stParams = array_merge(
 177                                 $didYouMeanParams,
 178                                 $this->powerSearchOptions()
 179                         );
 180
 181                         $suggestionSnippet = $textMatches->getSuggestionSnippet();
 182
 183                         if( $suggestionSnippet == '' )
 184                                 $suggestionSnippet = null;
 185
 186                         $suggestLink = $sk->linkKnown(
 187                                 $st,
 188                                 $suggestionSnippet,
 189                                 array(),
 190                                 $stParams
 191                         );
 192
 193                         $this->didYouMeanHtml = '<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>';
 194                 }
 195                 // start rendering the page
 196                 $wgOut->addHtml(
 197                         Xml::openElement(
 198                                 'form',
 199                                 array(
 200                                         'id' => ( $this->searchAdvanced ? 'powersearch' : 'search' ),
 201                                         'method' => 'get',
 202                                         'action' => $wgScript
 203                                 )
 204                         )
 205                 );
 206                 $wgOut->addHtml(
 207                         Xml::openElement( 'table', array( 'id'=>'mw-search-top-table', 'border'=>0, 'cellpadding'=>0, 'cellspacing'=>0 ) ) .
 208                         Xml::openElement( 'tr' ) .
 209                         Xml::openElement( 'td' ) . "\n" .
 210                         $this->shortDialog( $term ) .
 211                         Xml::closeElement('td') .
 212                         Xml::closeElement('tr') .
 213                         Xml::closeElement('table')
 214                 );
 215
 216                 // Sometimes the search engine knows there are too many hits
 217                 if( $titleMatches instanceof SearchResultTooMany ) {
 218                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 219                         wfProfileOut( __METHOD__ );
 220                         return;
 221                 }
 222
 223                 $filePrefix = $wgContLang->getFormattedNsText(NS_FILE).':';
 224                 if( trim( $term ) === '' || $filePrefix === trim( $term ) ) {
 225                         $wgOut->addHTML( $this->searchFocus() );
 226                         $wgOut->addHTML( $this->formHeader($term, 0, 0));
 227                         if( $this->searchAdvanced ) {
 228                                 $wgOut->addHTML( $this->powerSearchBox( $term ) );
 229                         }
 230                         $wgOut->addHTML( '</form>' );
 231                         // Empty query -- straight view of search form
 232                         wfProfileOut( __METHOD__ );
 233                         return;
 234                 }
 235
 236                 // Get number of results
 237                 $titleMatchesNum = $titleMatches ? $titleMatches->numRows() : 0;
 238                 $textMatchesNum = $textMatches ? $textMatches->numRows() : 0;
 239                 // Total initial query matches (possible false positives)
 240                 $num = $titleMatchesNum + $textMatchesNum;
 241
 242                 // Get total actual results (after second filtering, if any)
 243                 $numTitleMatches = $titleMatches && !is_null( $titleMatches->getTotalHits() ) ?
 244                         $titleMatches->getTotalHits() : $titleMatchesNum;
 245                 $numTextMatches = $textMatches && !is_null( $textMatches->getTotalHits() ) ?
 246                         $textMatches->getTotalHits() : $textMatchesNum;
 247
 248                 // get total number of results if backend can calculate it
 249                 $totalRes = 0;
 250                 if($titleMatches && !is_null( $titleMatches->getTotalHits() ) )
 251                         $totalRes += $titleMatches->getTotalHits();
 252                 if($textMatches && !is_null( $textMatches->getTotalHits() ))
 253                         $totalRes += $textMatches->getTotalHits();
 254
 255                 // show number of results and current offset
 256                 $wgOut->addHTML( $this->formHeader($term, $num, $totalRes));
 257                 if( $this->searchAdvanced ) {
 258                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 259                 }
 260
 261                 $wgOut->addHtml( Xml::closeElement( 'form' ) );
 262                 $wgOut->addHtml( "<div class='searchresults'>" );
 263
 264                 // prev/next links
 265                 if( $num || $this->offset ) {
 266                         // Show the create link ahead
 267                         $this->showCreateLink( $t );
 268                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
 269                                 SpecialPage::getTitleFor( 'Search' ),
 270                                 wfArrayToCGI( $this->powerSearchOptions(), array( 'search' => $term ) ),
 271                                 max( $titleMatchesNum, $textMatchesNum ) < $this->limit
 272                         );
 273                         //$wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
 274                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 275                 } else {
 276                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 277                 }
 278
 279                 if( $titleMatches ) {
 280                         if( $numTitleMatches > 0 ) {
 281                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
 282                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
 283                         }
 284                         $titleMatches->free();
 285                 }
 286                 if( $textMatches ) {
 287                         // output appropriate heading
 288                         if( $numTextMatches > 0 && $numTitleMatches > 0 ) {
 289                                 // if no title matches the heading is redundant
 290                                 $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
 291                         } elseif( $totalRes == 0 ) {
 292                                 # Don't show the 'no text matches' if we received title matches
 293                                 # $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
 294                         }
 295                         // show interwiki results if any
 296                         if( $textMatches->hasInterwikiResults() ) {
 297                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
 298                         }
 299                         // show results
 300                         if( $numTextMatches > 0 ) {
 301                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
 302                         }
 303
 304                         $textMatches->free();
 305                 }
 306                 if( $num === 0 ) {
 307                         $wgOut->addWikiMsg( 'search-nonefound', wfEscapeWikiText( $term ) );
 308                         $this->showCreateLink( $t );
 309                 }
 310                 $wgOut->addHtml( "</div>" );
 311                 if( $num === 0 ) {
 312                         $wgOut->addHTML( $this->searchFocus() );
 313                 }
 314
 315                 if( $num || $this->offset ) {
 316                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 317                 }
 318                 wfProfileOut( __METHOD__ );
 319         }
 320
 321         protected function showCreateLink( $t ) {
 322                 global $wgOut;
 323
 324                 // show direct page/create link if applicable
 325                 $messageName = null;
 326                 if( !is_null($t) ) {
 327                         if( $t->isKnown() ) {
 328                                 $messageName = 'searchmenu-exists';
 329                         } elseif( $t->userCan( 'create' ) ) {
 330                                 $messageName = 'searchmenu-new';
 331                         } else {
 332                                 $messageName = 'searchmenu-new-nocreate';
 333                         }
 334                 }
 335                 if( $messageName ) {
 336                         $wgOut->addWikiMsg( $messageName, wfEscapeWikiText( $t->getPrefixedText() ) );
 337                 } else {
 338                         // preserve the paragraph for margins etc...
 339                         $wgOut->addHtml( '<p></p>' );
 340                 }
 341         }
 342
 343         /**
 344          *
 345          */
 346         protected function setupPage( $term ) {
 347                 global $wgOut;
 348                 // Figure out the active search profile header
 349                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 350                 if( $this->searchAdvanced )
 351                         $this->active = 'advanced';
 352                 else {
 353                         $profiles = $this->getSearchProfiles();
 354
 355                         foreach( $profiles as $key => $data ) {
 356                                 if ( $this->namespaces == $data['namespaces'] && $key != 'advanced')
 357                                         $this->active = $key;
 358                         }
 359
 360                 }
 361                 # Should advanced UI be used?
 362                 $this->searchAdvanced = ($this->active === 'advanced');
 363                 if( !empty( $term ) ) {
 364                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
 365                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term ) ) );
 366                 }
 367                 $wgOut->setArticleRelated( false );
 368                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 369                 // add javascript specific to special:search
 370                 $wgOut->addScriptFile( 'search.js' );
 371
 372                 // Bug #16886: Sister projects box moves down the first extract on IE7
 373                 $wgOut->addStyle( 'common/IE70Fixes.css', 'screen', 'IE 7' );
 374         }
 375
 376         /**
 377          * Extract "power search" namespace settings from the request object,
 378          * returning a list of index numbers to search.
 379          *
 380          * @param $request WebRequest
 381          * @return Array
 382          */
 383         protected function powerSearch( &$request ) {
 384                 $arr = array();
 385                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 386                         if( $request->getCheck( 'ns' . $ns ) ) {
 387                                 $arr[] = $ns;
 388                         }
 389                 }
 390                 return $arr;
 391         }
 392
 393         /**
 394          * Reconstruct the 'power search' options for links
 395          *
 396          * @return Array
 397          */
 398         protected function powerSearchOptions() {
 399                 $opt = array();
 400                 foreach( $this->namespaces as $n ) {
 401                         $opt['ns' . $n] = 1;
 402                 }
 403                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 404                 if( $this->searchAdvanced ) {
 405                         $opt['advanced'] = $this->searchAdvanced;
 406                 }
 407                 return $opt;
 408         }
 409
 410         /**
 411          * Show whole set of results
 412          *
 413          * @param $matches SearchResultSet
 414          */
 415         protected function showMatches( &$matches ) {
 416                 global $wgContLang;
 417                 wfProfileIn( __METHOD__ );
 418
 419                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 420
 421                 $out = "";
 422                 $infoLine = $matches->getInfo();
 423                 if( !is_null($infoLine) ) {
 424                         $out .= "\n<!-- {$infoLine} -->\n";
 425                 }
 426                 $off = $this->offset + 1;
 427                 $out .= "<ul class='mw-search-results'>\n";
 428                 while( $result = $matches->next() ) {
 429                         $out .= $this->showHit( $result, $terms );
 430                 }
 431                 $out .= "</ul>\n";
 432
 433                 // convert the whole thing to desired language variant
 434                 $out = $wgContLang->convert( $out );
 435                 wfProfileOut( __METHOD__ );
 436                 return $out;
 437         }
 438
 439         /**
 440          * Format a single hit result
 441          *
 442          * @param $result SearchResult
 443          * @param $terms Array: terms to highlight
 444          */
 445         protected function showHit( $result, $terms ) {
 446                 global $wgLang, $wgUser;
 447                 wfProfileIn( __METHOD__ );
 448
 449                 if( $result->isBrokenTitle() ) {
 450                         wfProfileOut( __METHOD__ );
 451                         return "<!-- Broken link in search result -->\n";
 452                 }
 453
 454                 $sk = $wgUser->getSkin();
 455                 $t = $result->getTitle();
 456
 457                 $titleSnippet = $result->getTitleSnippet($terms);
 458
 459                 if( $titleSnippet == '' )
 460                         $titleSnippet = null;
 461
 462                 $link_t = clone $t;
 463
 464                 wfRunHooks( 'ShowSearchHitTitle',
 465                                         array( &$link_t, &$titleSnippet, $result, $terms, $this ) );
 466
 467                 $link = $this->sk->linkKnown(
 468                         $link_t,
 469                         $titleSnippet
 470                 );
 471
 472                 //If page content is not readable, just return the title.
 473                 //This is not quite safe, but better than showing excerpts from non-readable pages
 474                 //Note that hiding the entry entirely would screw up paging.
 475                 if( !$t->userCanRead() ) {
 476                         wfProfileOut( __METHOD__ );
 477                         return "<li>{$link}</li>\n";
 478                 }
 479
 480                 // If the page doesn't *exist*... our search index is out of date.
 481                 // The least confusing at this point is to drop the result.
 482                 // You may get less results, but... oh well. :P
 483                 if( $result->isMissingRevision() ) {
 484                         wfProfileOut( __METHOD__ );
 485                         return "<!-- missing page " . htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
 486                 }
 487
 488                 // format redirects / relevant sections
 489                 $redirectTitle = $result->getRedirectTitle();
 490                 $redirectText = $result->getRedirectSnippet($terms);
 491                 $sectionTitle = $result->getSectionTitle();
 492                 $sectionText = $result->getSectionSnippet($terms);
 493                 $redirect = '';
 494
 495                 if( !is_null($redirectTitle) ) {
 496                         if( $redirectText == '' )
 497                                 $redirectText = null;
 498
 499                         $redirect = "<span class='searchalttitle'>" .
 500                                 wfMsg(
 501                                         'search-redirect',
 502                                         $this->sk->linkKnown(
 503                                                 $redirectTitle,
 504                                                 $redirectText
 505                                         )
 506                                 ) .
 507                                 "</span>";
 508                 }
 509
 510                 $section = '';
 511
 512
 513                 if( !is_null($sectionTitle) ) {
 514                         if( $sectionText == '' )
 515                                 $sectionText = null;
 516
 517                         $section = "<span class='searchalttitle'>" .
 518                                 wfMsg(
 519                                         'search-section', $this->sk->linkKnown(
 520                                                 $sectionTitle,
 521                                                 $sectionText
 522                                         )
 523                                 ) .
 524                                 "</span>";
 525                 }
 526
 527                 // format text extract
 528                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
 529
 530                 // format score
 531                 if( is_null( $result->getScore() ) ) {
 532                         // Search engine doesn't report scoring info
 533                         $score = '';
 534                 } else {
 535                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 536                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
 537                                 . ' - ';
 538                 }
 539
 540                 // format description
 541                 $byteSize = $result->getByteSize();
 542                 $wordCount = $result->getWordCount();
 543                 $timestamp = $result->getTimestamp();
 544                 $size = wfMsgExt(
 545                         'search-result-size',
 546                         array( 'parsemag', 'escape' ),
 547                         $this->sk->formatSize( $byteSize ),
 548                         $wgLang->formatNum( $wordCount )
 549                 );
 550
 551                 if( $t->getNamespace() == NS_CATEGORY ) {
 552                         $cat = Category::newFromTitle( $t );
 553                         $size = wfMsgExt(
 554                                 'search-result-category-size',
 555                                 array( 'parsemag', 'escape' ),
 556                                 $wgLang->formatNum( $cat->getPageCount() ),
 557                                 $wgLang->formatNum( $cat->getSubcatCount() ),
 558                                 $wgLang->formatNum( $cat->getFileCount() )
 559                         );
 560                 }
 561
 562                 $date = $wgLang->timeanddate( $timestamp );
 563
 564                 // link to related articles if supported
 565                 $related = '';
 566                 if( $result->hasRelated() ) {
 567                         $st = SpecialPage::getTitleFor( 'Search' );
 568                         $stParams = array_merge(
 569                                 $this->powerSearchOptions(),
 570                                 array(
 571                                         'search' => wfMsgForContent( 'searchrelated' ) . ':' . $t->getPrefixedText(),
 572                                         'fulltext' => wfMsg( 'search' )
 573                                 )
 574                         );
 575
 576                         $related = ' -- ' . $sk->linkKnown(
 577                                 $st,
 578                                 wfMsg('search-relatedarticle'),
 579                                 array(),
 580                                 $stParams
 581                         );
 582                 }
 583
 584                 // Include a thumbnail for media files...
 585                 if( $t->getNamespace() == NS_FILE ) {
 586                         $img = wfFindFile( $t );
 587                         if( $img ) {
 588                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 589                                 if( $thumb ) {
 590                                         $desc = $img->getShortDesc();
 591                                         wfProfileOut( __METHOD__ );
 592                                         // Float doesn't seem to interact well with the bullets.
 593                                         // Table messes up vertical alignment of the bullets.
 594                                         // Bullets are therefore disabled (didn't look great anyway).
 595                                         return "<li>" .
 596                                                 '<table class="searchResultImage">' .
 597                                                 '<tr>' .
 598                                                 '<td width="120" align="center" valign="top">' .
 599                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 600                                                 '</td>' .
 601                                                 '<td valign="top">' .
 602                                                 $link .
 603                                                 $extract .
 604                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 605                                                 '</td>' .
 606                                                 '</tr>' .
 607                                                 '</table>' .
 608                                                 "</li>\n";
 609                                 }
 610                         }
 611                 }
 612
 613                 wfProfileOut( __METHOD__ );
 614                 return "<li><div class='mw-search-result-heading'>{$link} {$redirect} {$section}</div> {$extract}\n" .
 615                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 616                         "</li>\n";
 617
 618         }
 619
 620         /**
 621          * Show results from other wikis
 622          *
 623          * @param $matches SearchResultSet
 624          * @param $query String
 625          */
 626         protected function showInterwiki( &$matches, $query ) {
 627                 global $wgContLang;
 628                 wfProfileIn( __METHOD__ );
 629                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 630
 631                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".
 632                         wfMsg('search-interwiki-caption')."</div>\n";
 633                 $off = $this->offset + 1;
 634                 $out .= "<ul class='mw-search-iwresults'>\n";
 635
 636                 // work out custom project captions
 637                 $customCaptions = array();
 638                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
 639                 foreach($customLines as $line) {
 640                         $parts = explode(":",$line,2);
 641                         if(count($parts) == 2) // validate line
 642                                 $customCaptions[$parts[0]] = $parts[1];
 643                 }
 644
 645                 $prev = null;
 646                 while( $result = $matches->next() ) {
 647                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
 648                         $prev = $result->getInterwikiPrefix();
 649                 }
 650                 // TODO: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 651                 $out .= "</ul></div>\n";
 652
 653                 // convert the whole thing to desired language variant
 654                 $out = $wgContLang->convert( $out );
 655                 wfProfileOut( __METHOD__ );
 656                 return $out;
 657         }
 658
 659         /**
 660          * Show single interwiki link
 661          *
 662          * @param $result SearchResult
 663          * @param $lastInterwiki String
 664          * @param $terms Array
 665          * @param $query String
 666          * @param $customCaptions Array: iw prefix -> caption
 667          */
 668         protected function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
 669                 wfProfileIn( __METHOD__ );
 670
 671                 if( $result->isBrokenTitle() ) {
 672                         wfProfileOut( __METHOD__ );
 673                         return "<!-- Broken link in search result -->\n";
 674                 }
 675
 676                 $t = $result->getTitle();
 677
 678                 $titleSnippet = $result->getTitleSnippet($terms);
 679
 680                 if( $titleSnippet == '' )
 681                         $titleSnippet = null;
 682
 683                 $link = $this->sk->linkKnown(
 684                         $t,
 685                         $titleSnippet
 686                 );
 687
 688                 // format redirect if any
 689                 $redirectTitle = $result->getRedirectTitle();
 690                 $redirectText = $result->getRedirectSnippet($terms);
 691                 $redirect = '';
 692                 if( !is_null($redirectTitle) ) {
 693                         if( $redirectText == '' )
 694                                 $redirectText = null;
 695
 696                         $redirect = "<span class='searchalttitle'>" .
 697                                 wfMsg(
 698                                         'search-redirect',
 699                                         $this->sk->linkKnown(
 700                                                 $redirectTitle,
 701                                                 $redirectText
 702                                         )
 703                                 ) .
 704                                 "</span>";
 705                 }
 706
 707                 $out = "";
 708                 // display project name
 709                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()) {
 710                         if( key_exists($t->getInterwiki(),$customCaptions) )
 711                                 // captions from 'search-interwiki-custom'
 712                                 $caption = $customCaptions[$t->getInterwiki()];
 713                         else{
 714                                 // default is to show the hostname of the other wiki which might suck
 715                                 // if there are many wikis on one hostname
 716                                 $parsed = parse_url($t->getFullURL());
 717                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
 718                         }
 719                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 720                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
 721                         $searchLink = $this->sk->linkKnown(
 722                                 $searchTitle,
 723                                 wfMsg('search-interwiki-more'),
 724                                 array(),
 725                                 array(
 726                                         'search' => $query,
 727                                         'fulltext' => 'Search'
 728                                 )
 729                         );
 730                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
 731                                 {$searchLink}</span>{$caption}</div>\n<ul>";
 732                 }
 733
 734                 $out .= "<li>{$link} {$redirect}</li>\n";
 735                 wfProfileOut( __METHOD__ );
 736                 return $out;
 737         }
 738
 739
 740         /**
 741          * Generates the power search box at bottom of [[Special:Search]]
 742          *
 743          * @param $term String: search term
 744          * @return String: HTML form
 745          */
 746         protected function powerSearchBox( $term ) {
 747                 // Groups namespaces into rows according to subject
 748                 $rows = array();
 749                 foreach( SearchEngine::searchableNamespaces() as $namespace => $name ) {
 750                         $subject = MWNamespace::getSubject( $namespace );
 751                         if( !array_key_exists( $subject, $rows ) ) {
 752                                 $rows[$subject] = "";
 753                         }
 754                         $name = str_replace( '_', ' ', $name );
 755                         if( $name == '' ) {
 756                                 $name = wfMsg( 'blanknamespace' );
 757                         }
 758                         $rows[$subject] .=
 759                                 Xml::openElement(
 760                                         'td', array( 'style' => 'white-space: nowrap' )
 761                                 ) .
 762                                 Xml::checkLabel(
 763                                         $name,
 764                                         "ns{$namespace}",
 765                                         "mw-search-ns{$namespace}",
 766                                         in_array( $namespace, $this->namespaces )
 767                                 ) .
 768                                 Xml::closeElement( 'td' );
 769                 }
 770                 $rows = array_values( $rows );
 771                 $numRows = count( $rows );
 772
 773                 // Lays out namespaces in multiple floating two-column tables so they'll
 774                 // be arranged nicely while still accommodating different screen widths
 775                 $namespaceTables = '';
 776                 for( $i = 0; $i < $numRows; $i += 4 ) {
 777                         $namespaceTables .= Xml::openElement(
 778                                 'table',
 779                                 array( 'cellpadding' => 0, 'cellspacing' => 0, 'border' => 0 )
 780                         );
 781                         for( $j = $i; $j < $i + 4 && $j < $numRows; $j++ ) {
 782                                 $namespaceTables .= Xml::tags( 'tr', null, $rows[$j] );
 783                         }
 784                         $namespaceTables .= Xml::closeElement( 'table' );
 785                 }
 786                 // Show redirects check only if backend supports it
 787                 $redirects = '';
 788                 if( $this->searchEngine->acceptListRedirects() ) {
 789                         $redirects =
 790                                 Xml::check(
 791                                         'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' )
 792                                 ) .
 793                                 ' ' .
 794                                 Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
 795                 }
 796                 // Return final output
 797                 return
 798                         Xml::openElement(
 799                                 'fieldset',
 800                                 array( 'id' => 'mw-searchoptions', 'style' => 'margin:0em;' )
 801                         ) .
 802                         Xml::element( 'legend', null, wfMsg('powersearch-legend') ) .
 803                         Xml::tags( 'h4', null, wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) ) .
 804                         Xml::tags(
 805                                 'div',
 806                                 array( 'id' => 'mw-search-togglebox' ),
 807                                 Xml::label( wfMsg( 'powersearch-togglelabel' ), 'mw-search-togglelabel' ) .
 808                                         Xml::element(
 809                                                 'input',
 810                                                 array(
 811                                                         'type'=>'button',
 812                                                         'id' => 'mw-search-toggleall',
 813                                                         'onclick' => 'mwToggleSearchCheckboxes("all");',
 814                                                         'value' => wfMsg( 'powersearch-toggleall' )
 815                                                 )
 816                                         ) .
 817                                         Xml::element(
 818                                                 'input',
 819                                                 array(
 820                                                         'type'=>'button',
 821                                                         'id' => 'mw-search-togglenone',
 822                                                         'onclick' => 'mwToggleSearchCheckboxes("none");',
 823                                                         'value' => wfMsg( 'powersearch-togglenone' )
 824                                                 )
 825                                         )
 826                         ) .
 827                         Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
 828                         $namespaceTables .
 829                         Xml::element( 'div', array( 'class' => 'divider' ), '', false ) .
 830                         $redirects .
 831                         Xml::hidden( 'title', SpecialPage::getTitleFor( 'Search' )->getPrefixedText() ) .
 832                         Xml::hidden( 'advanced', $this->searchAdvanced ) .
 833                         Xml::hidden( 'fulltext', 'Advanced search' ) .
 834                         Xml::closeElement( 'fieldset' );
 835         }
 836
 837         protected function searchFocus() {
 838                 $id = $this->searchAdvanced ? 'powerSearchText' : 'searchText';
 839                 return Html::inlineScript(
 840                         "hookEvent(\"load\", function() {" .
 841                                 "document.getElementById('$id').focus();" .
 842                         "});" );
 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 $key => &$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                                 $out .= Xml::hidden( "ns{$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