includes/specials/SpecialSearch.php

   1 <?php
   2 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>
   3 # http://www.mediawiki.org/
   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  * Run text & title search and display the output
  22  * @file
  23  * @ingroup SpecialPage
  24  */
  25
  26 /**
  27  * Entry point
  28  *
  29  * @param $par String: (default '')
  30  */
  31 function wfSpecialSearch( $par = '' ) {
  32         global $wgRequest, $wgUser, $wgUseOldSearchUI;
  33         // Strip underscores from title parameter; most of the time we'll want
  34         // text form here. But don't strip underscores from actual text params!
  35         $titleParam = str_replace( '_', ' ', $par );
  36         // Fetch the search term
  37         $search = str_replace( "\n", " ", $wgRequest->getText( 'search', $titleParam ) );
  38         $class = $wgUseOldSearchUI ? 'SpecialSearchOld' : 'SpecialSearch';
  39         $searchPage = new $class( $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 WebRequest $request
  61          * @param User $user
  62          * @public
  63          */
  64         function __construct( &$request, &$user ) {
  65                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
  66                 $this->mPrefix = $request->getVal('prefix', '');
  67                 # Extract requested namespaces
  68                 $this->namespaces = $this->powerSearch( $request );
  69                 if( empty( $this->namespaces ) ) {
  70                         $this->namespaces = SearchEngine::userNamespaces( $user );
  71                 }
  72                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
  73                 $this->searchAdvanced = $request->getVal( 'advanced' );
  74                 $this->active = 'advanced';
  75                 $this->sk = $user->getSkin();
  76                 $this->didYouMeanHtml = ''; # html of did you mean... link
  77                 $this->fulltext = $request->getVal('fulltext');
  78         }
  79
  80         /**
  81          * If an exact title match can be found, jump straight ahead to it.
  82          * @param string $term
  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                         $wgOut->redirect( $t->getFullURL() );
  97                         return;
  98                 }
  99                 # No match, generate an edit URL
 100                 $t = Title::newFromText( $term );
 101                 if( !is_null( $t ) ) {
 102                         global $wgGoToEdit;
 103                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 104                         # If the feature is enabled, go straight to the edit page
 105                         if( $wgGoToEdit ) {
 106                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 107                                 return;
 108                         }
 109                 }
 110                 return $this->showResults( $term );
 111         }
 112
 113         /**
 114          * @param string $term
 115          */
 116         public function showResults( $term ) {
 117                 global $wgOut, $wgUser, $wgDisableTextSearch, $wgContLang;
 118                 wfProfileIn( __METHOD__ );
 119
 120                 $sk = $wgUser->getSkin();
 121
 122                 $this->searchEngine = SearchEngine::create();
 123                 $search =& $this->searchEngine;
 124                 $search->setLimitOffset( $this->limit, $this->offset );
 125                 $search->setNamespaces( $this->namespaces );
 126                 $search->showRedirects = $this->searchRedirects;
 127                 $search->prefix = $this->mPrefix;
 128                 $term = $search->transformSearchTerm($term);
 129
 130                 $this->setupPage( $term );
 131
 132                 if( $wgDisableTextSearch ) {
 133                         global $wgSearchForwardUrl;
 134                         if( $wgSearchForwardUrl ) {
 135                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 136                                 $wgOut->redirect( $url );
 137                                 wfProfileOut( __METHOD__ );
 138                                 return;
 139                         }
 140                         global $wgInputEncoding;
 141                         $wgOut->addHTML(
 142                                 Xml::openElement( 'fieldset' ) .
 143                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 144                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 145                                 wfMsg( 'googlesearch',
 146                                         htmlspecialchars( $term ),
 147                                         htmlspecialchars( $wgInputEncoding ),
 148                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 149                                 ) .
 150                                 Xml::closeElement( 'fieldset' )
 151                         );
 152                         wfProfileOut( __METHOD__ );
 153                         return;
 154                 }
 155
 156                 $t = Title::newFromText( $term );
 157
 158                 // fetch search results
 159                 $rewritten = $search->replacePrefixes($term);
 160
 161                 $titleMatches = $search->searchTitle( $rewritten );
 162                 if( !($titleMatches instanceof SearchResultTooMany))
 163                         $textMatches = $search->searchText( $rewritten );
 164
 165                 // did you mean... suggestions
 166                 if( $textMatches && $textMatches->hasSuggestion() ) {
 167                         $st = SpecialPage::getTitleFor( 'Search' );
 168                         # mirror Go/Search behaviour of original request ..
 169                         $didYouMeanParams = array( 'search' => $textMatches->getSuggestionQuery() );
 170                         if($this->fulltext != NULL)
 171                                 $didYouMeanParams['fulltext'] = $this->fulltext;
 172                         $stParams = wfArrayToCGI(
 173                                 $didYouMeanParams,
 174                                 $this->powerSearchOptions()
 175                         );
 176                         $suggestLink = $sk->makeKnownLinkObj( $st,
 177                                 $textMatches->getSuggestionSnippet(),
 178                                 $stParams );
 179
 180                         $this->didYouMeanHtml = '<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>';
 181                 }
 182
 183                 // start rendering the page
 184                 $wgOut->addHtml(
 185                         Xml::openElement( 'table', array( 'border'=>0, 'cellpadding'=>0, 'cellspacing'=>0 ) ) .
 186                         Xml::openElement( 'tr' ) .
 187                         Xml::openElement( 'td' ) . "\n" .
 188                         ( $this->searchAdvanced ? $this->powerSearchBox( $term ) : $this->shortDialog( $term ) ) .
 189                         Xml::closeElement('td') .
 190                         Xml::closeElement('tr') .
 191                         Xml::closeElement('table')
 192                 );
 193
 194                 // Sometimes the search engine knows there are too many hits
 195                 if( $titleMatches instanceof SearchResultTooMany ) {
 196                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 197                         wfProfileOut( __METHOD__ );
 198                         return;
 199                 }
 200
 201                 $filePrefix = $wgContLang->getFormattedNsText(NS_FILE).':';
 202                 if( '' === trim( $term ) || $filePrefix === trim( $term ) ) {
 203                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 204                         // Empty query -- straight view of search form
 205                         wfProfileOut( __METHOD__ );
 206                         return;
 207                 }
 208
 209
 210                 // Get number of results
 211                 $titleMatchesNum = $titleMatches ? $titleMatches->numRows() : 0;
 212                 $textMatchesNum = $textMatches ? $textMatches->numRows() : 0;
 213                 // Total initial query matches (possible false positives)
 214                 $num = $titleMatchesNum + $textMatchesNum;
 215
 216                 // Get total actual results (after second filtering, if any)
 217                 $numTitleMatches = $titleMatches && !is_null( $titleMatches->getTotalHits() ) ?
 218                         $titleMatches->getTotalHits() : $titleMatchesNum;
 219                 $numTextMatches = $textMatches && !is_null( $textMatches->getTotalHits() ) ?
 220                         $textMatches->getTotalHits() : $textMatchesNum;
 221
 222                 // get total number of results if backend can calculate it
 223                 $totalRes = 0;
 224                 if($titleMatches && !is_null( $titleMatches->getTotalHits() ) )
 225                         $totalRes += $titleMatches->getTotalHits();
 226                 if($textMatches && !is_null( $textMatches->getTotalHits() ))
 227                         $totalRes += $textMatches->getTotalHits();
 228
 229                 // show number of results and current offset
 230                 $wgOut->addHTML( $this->formHeader($term, $num, $totalRes));
 231
 232                 $wgOut->addHtml( "<div class='searchresults'>" );
 233
 234                 // show direct page/create link
 235                 if( !is_null($t) ) {
 236                         if( !$t->exists() ) {
 237                                 $wgOut->addWikiMsg( 'searchmenu-new', wfEscapeWikiText( $t->getPrefixedText() ) );
 238                         } else {
 239                                 $wgOut->addWikiMsg( 'searchmenu-exists', wfEscapeWikiText( $t->getPrefixedText() ) );
 240                         }
 241                 }
 242
 243                 // prev/next links
 244                 if( $num || $this->offset ) {
 245                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
 246                                 SpecialPage::getTitleFor( 'Search' ),
 247                                 wfArrayToCGI( $this->powerSearchOptions(), array( 'search' => $term ) ),
 248                                 max( $titleMatchesNum, $textMatchesNum ) < $this->limit
 249                         );
 250                         //$wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
 251                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 252                 } else {
 253                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 254                 }
 255
 256
 257                 if( $titleMatches ) {
 258                         if( $numTitleMatches > 0 ) {
 259                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
 260                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
 261                         }
 262                         $titleMatches->free();
 263                 }
 264                 if( $textMatches ) {
 265                         // output appropriate heading
 266                         if( $numTextMatches > 0 && $numTitleMatches > 0 ) {
 267                                 // if no title matches the heading is redundant
 268                                 $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
 269                         } elseif( $totalRes == 0 ) {
 270                                 # Don't show the 'no text matches' if we received title matches
 271                                 # $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
 272                         }
 273                         // show interwiki results if any
 274                         if( $textMatches->hasInterwikiResults() ) {
 275                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
 276                         }
 277                         // show results
 278                         if( $numTextMatches > 0 ) {
 279                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
 280                         }
 281
 282                         $textMatches->free();
 283                 }
 284                 if( $num === 0 ) {
 285                         $wgOut->addWikiMsg( 'search-nonefound' );
 286                 }
 287                 $wgOut->addHtml( "</div>" );
 288                 if( $num === 0 ) {
 289                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 290                 }
 291
 292                 if( $num || $this->offset ) {
 293                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 294                 }
 295                 wfProfileOut( __METHOD__ );
 296         }
 297
 298         /**
 299          *
 300          */
 301         protected function setupPage( $term ) {
 302                 global $wgOut;
 303                 // Figure out the active search profile header
 304                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 305                 if( $this->searchAdvanced )
 306                         $this->active = 'advanced';
 307                 else if( $this->namespaces === array(NS_FILE) || $this->startsWithImage( $term ) )
 308                         $this->active = 'images';
 309                 elseif( $this->namespaces === $nsAllSet || $this->startsWithAll( $term ) )
 310                         $this->active = 'all';
 311                 elseif( $this->namespaces === SearchEngine::defaultNamespaces() )
 312                         $this->active = 'default';
 313                 elseif( $this->namespaces === SearchEngine::helpNamespaces() )
 314                         $this->active = 'help';
 315                 else
 316                         $this->active = 'advanced';
 317                 # Should advanced UI be used?
 318                 $this->searchAdvanced = ($this->active === 'advanced');
 319                 if( !empty( $term ) ) {
 320                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
 321                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term ) ) );
 322                 }
 323                 $wgOut->setArticleRelated( false );
 324                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 325         }
 326
 327         /**
 328          * Extract "power search" namespace settings from the request object,
 329          * returning a list of index numbers to search.
 330          *
 331          * @param WebRequest $request
 332          * @return array
 333          */
 334         protected function powerSearch( &$request ) {
 335                 $arr = array();
 336                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 337                         if( $request->getCheck( 'ns' . $ns ) ) {
 338                                 $arr[] = $ns;
 339                         }
 340                 }
 341                 return $arr;
 342         }
 343
 344         /**
 345          * Reconstruct the 'power search' options for links
 346          * @return array
 347          */
 348         protected function powerSearchOptions() {
 349                 $opt = array();
 350                 foreach( $this->namespaces as $n ) {
 351                         $opt['ns' . $n] = 1;
 352                 }
 353                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 354                 if( $this->searchAdvanced ) {
 355                         $opt['advanced'] = $this->searchAdvanced;
 356                 }
 357                 return $opt;
 358         }
 359
 360         /**
 361          * Show whole set of results
 362          *
 363          * @param SearchResultSet $matches
 364          */
 365         protected function showMatches( &$matches ) {
 366                 global $wgContLang;
 367                 wfProfileIn( __METHOD__ );
 368
 369                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 370
 371                 $out = "";
 372                 $infoLine = $matches->getInfo();
 373                 if( !is_null($infoLine) ) {
 374                         $out .= "\n<!-- {$infoLine} -->\n";
 375                 }
 376                 $off = $this->offset + 1;
 377                 $out .= "<ul class='mw-search-results'>\n";
 378                 while( $result = $matches->next() ) {
 379                         $out .= $this->showHit( $result, $terms );
 380                 }
 381                 $out .= "</ul>\n";
 382
 383                 // convert the whole thing to desired language variant
 384                 $out = $wgContLang->convert( $out );
 385                 wfProfileOut( __METHOD__ );
 386                 return $out;
 387         }
 388
 389         /**
 390          * Format a single hit result
 391          * @param SearchResult $result
 392          * @param array $terms terms to highlight
 393          */
 394         protected function showHit( $result, $terms ) {
 395                 global $wgContLang, $wgLang, $wgUser;
 396                 wfProfileIn( __METHOD__ );
 397
 398                 if( $result->isBrokenTitle() ) {
 399                         wfProfileOut( __METHOD__ );
 400                         return "<!-- Broken link in search result -->\n";
 401                 }
 402
 403                 $sk = $wgUser->getSkin();
 404                 $t = $result->getTitle();
 405
 406                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 407
 408                 //If page content is not readable, just return the title.
 409                 //This is not quite safe, but better than showing excerpts from non-readable pages
 410                 //Note that hiding the entry entirely would screw up paging.
 411                 if( !$t->userCanRead() ) {
 412                         wfProfileOut( __METHOD__ );
 413                         return "<li>{$link}</li>\n";
 414                 }
 415
 416                 // If the page doesn't *exist*... our search index is out of date.
 417                 // The least confusing at this point is to drop the result.
 418                 // You may get less results, but... oh well. :P
 419                 if( $result->isMissingRevision() ) {
 420                         wfProfileOut( __METHOD__ );
 421                         return "<!-- missing page " . htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
 422                 }
 423
 424                 // format redirects / relevant sections
 425                 $redirectTitle = $result->getRedirectTitle();
 426                 $redirectText = $result->getRedirectSnippet($terms);
 427                 $sectionTitle = $result->getSectionTitle();
 428                 $sectionText = $result->getSectionSnippet($terms);
 429                 $redirect = '';
 430                 if( !is_null($redirectTitle) )
 431                         $redirect = "<span class='searchalttitle'>"
 432                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 433                                 ."</span>";
 434                 $section = '';
 435                 if( !is_null($sectionTitle) )
 436                         $section = "<span class='searchalttitle'>"
 437                                 .wfMsg('search-section', $this->sk->makeKnownLinkObj( $sectionTitle, $sectionText))
 438                                 ."</span>";
 439
 440                 // format text extract
 441                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
 442
 443                 // format score
 444                 if( is_null( $result->getScore() ) ) {
 445                         // Search engine doesn't report scoring info
 446                         $score = '';
 447                 } else {
 448                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 449                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
 450                                 . ' - ';
 451                 }
 452
 453                 // format description
 454                 $byteSize = $result->getByteSize();
 455                 $wordCount = $result->getWordCount();
 456                 $timestamp = $result->getTimestamp();
 457                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
 458                         $this->sk->formatSize( $byteSize ), $wordCount );
 459                 $date = $wgLang->timeanddate( $timestamp );
 460
 461                 // link to related articles if supported
 462                 $related = '';
 463                 if( $result->hasRelated() ) {
 464                         $st = SpecialPage::getTitleFor( 'Search' );
 465                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
 466                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
 467                                       'fulltext'  => wfMsg('search') ));
 468
 469                         $related = ' -- ' . $sk->makeKnownLinkObj( $st,
 470                                 wfMsg('search-relatedarticle'), $stParams );
 471                 }
 472
 473                 // Include a thumbnail for media files...
 474                 if( $t->getNamespace() == NS_FILE ) {
 475                         $img = wfFindFile( $t );
 476                         if( $img ) {
 477                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 478                                 if( $thumb ) {
 479                                         $desc = $img->getShortDesc();
 480                                         wfProfileOut( __METHOD__ );
 481                                         // Float doesn't seem to interact well with the bullets.
 482                                         // Table messes up vertical alignment of the bullets.
 483                                         // Bullets are therefore disabled (didn't look great anyway).
 484                                         return "<li>" .
 485                                                 '<table class="searchResultImage">' .
 486                                                 '<tr>' .
 487                                                 '<td width="120" align="center" valign="top">' .
 488                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 489                                                 '</td>' .
 490                                                 '<td valign="top">' .
 491                                                 $link .
 492                                                 $extract .
 493                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 494                                                 '</td>' .
 495                                                 '</tr>' .
 496                                                 '</table>' .
 497                                                 "</li>\n";
 498                                 }
 499                         }
 500                 }
 501
 502                 wfProfileOut( __METHOD__ );
 503                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
 504                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 505                         "</li>\n";
 506
 507         }
 508
 509         /**
 510          * Show results from other wikis
 511          *
 512          * @param SearchResultSet $matches
 513          */
 514         protected function showInterwiki( &$matches, $query ) {
 515                 global $wgContLang;
 516                 wfProfileIn( __METHOD__ );
 517                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 518
 519                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".
 520                         wfMsg('search-interwiki-caption')."</div>\n";
 521                 $off = $this->offset + 1;
 522                 $out .= "<ul class='mw-search-iwresults'>\n";
 523
 524                 // work out custom project captions
 525                 $customCaptions = array();
 526                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
 527                 foreach($customLines as $line) {
 528                         $parts = explode(":",$line,2);
 529                         if(count($parts) == 2) // validate line
 530                                 $customCaptions[$parts[0]] = $parts[1];
 531                 }
 532
 533                 $prev = null;
 534                 while( $result = $matches->next() ) {
 535                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
 536                         $prev = $result->getInterwikiPrefix();
 537                 }
 538                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 539                 $out .= "</ul></div>\n";
 540
 541                 // convert the whole thing to desired language variant
 542                 $out = $wgContLang->convert( $out );
 543                 wfProfileOut( __METHOD__ );
 544                 return $out;
 545         }
 546
 547         /**
 548          * Show single interwiki link
 549          *
 550          * @param SearchResult $result
 551          * @param string $lastInterwiki
 552          * @param array $terms
 553          * @param string $query
 554          * @param array $customCaptions iw prefix -> caption
 555          */
 556         protected function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
 557                 wfProfileIn( __METHOD__ );
 558                 global $wgContLang, $wgLang;
 559
 560                 if( $result->isBrokenTitle() ) {
 561                         wfProfileOut( __METHOD__ );
 562                         return "<!-- Broken link in search result -->\n";
 563                 }
 564
 565                 $t = $result->getTitle();
 566
 567                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 568
 569                 // format redirect if any
 570                 $redirectTitle = $result->getRedirectTitle();
 571                 $redirectText = $result->getRedirectSnippet($terms);
 572                 $redirect = '';
 573                 if( !is_null($redirectTitle) )
 574                         $redirect = "<span class='searchalttitle'>"
 575                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 576                                 ."</span>";
 577
 578                 $out = "";
 579                 // display project name
 580                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()) {
 581                         if( key_exists($t->getInterwiki(),$customCaptions) )
 582                                 // captions from 'search-interwiki-custom'
 583                                 $caption = $customCaptions[$t->getInterwiki()];
 584                         else{
 585                                 // default is to show the hostname of the other wiki which might suck
 586                                 // if there are many wikis on one hostname
 587                                 $parsed = parse_url($t->getFullURL());
 588                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
 589                         }
 590                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 591                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
 592                         $searchLink = $this->sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
 593                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
 594                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
 595                                 {$searchLink}</span>{$caption}</div>\n<ul>";
 596                 }
 597
 598                 $out .= "<li>{$link} {$redirect}</li>\n";
 599                 wfProfileOut( __METHOD__ );
 600                 return $out;
 601         }
 602
 603
 604         /**
 605          * Generates the power search box at bottom of [[Special:Search]]
 606          * @param $term string: search term
 607          * @return $out string: HTML form
 608          */
 609         protected function powerSearchBox( $term ) {
 610                 global $wgScript;
 611
 612                 $namespaces = SearchEngine::searchableNamespaces();
 613
 614                 $tables = $this->namespaceTables( $namespaces );
 615
 616                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
 617                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
 618                 $searchField = Xml::inputLabel( wfMsg('powersearch-field'), 'search', 'powerSearchText', 50, $term,
 619                         array( 'type' => 'text') );
 620                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ) ) . "\n";
 621                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 622
 623                 $redirectText = '';
 624                 // show redirects check only if backend supports it
 625                 if( $this->searchEngine->acceptListRedirects() ) {
 626                         $redirectText = "<p>". $redirect . " " . $redirectLabel ."</p>";
 627                 }
 628
 629                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
 630                         Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n" .
 631                         "<p>" .
 632                         wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
 633                         "</p>\n" .
 634                         '<input type="hidden" name="advanced" value="'.$this->searchAdvanced."\"/>\n".
 635                         $tables .
 636                         "<hr style=\"clear: both;\" />\n".
 637                         $redirectText ."\n".
 638                         "<div style=\"padding-top:2px;padding-bottom:2px;\">".
 639                         $searchField .
 640                         "&nbsp;" .
 641                         Xml::hidden( 'fulltext', 'Advanced search' ) . "\n" .
 642                         $searchButton .
 643                         "</div>".
 644                         "</form>";
 645                 $t = Title::newFromText( $term );
 646                 /* if( $t != null && count($this->namespaces) === 1 ) {
 647                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 648                 } */
 649                 return Xml::openElement( 'fieldset', array('id' => 'mw-searchoptions','style' => 'margin:0em;') ) .
 650                         Xml::element( 'legend', null, wfMsg('powersearch-legend') ) .
 651                         $out . $this->didYouMeanHtml .
 652                         Xml::closeElement( 'fieldset' );
 653         }
 654
 655         protected function searchFocus() {
 656                 global $wgJsMimeType;
 657                 return "<script type=\"$wgJsMimeType\">" .
 658                         "hookEvent(\"load\", function() {" .
 659                                 "document.getElementById('searchText').focus();" .
 660                         "});" .
 661                         "</script>";
 662         }
 663
 664         protected function powerSearchFocus() {
 665                 global $wgJsMimeType;
 666                 return "<script type=\"$wgJsMimeType\">" .
 667                         "hookEvent(\"load\", function() {" .
 668                                 "document.getElementById('powerSearchText').focus();" .
 669                         "});" .
 670                         "</script>";
 671         }
 672
 673         protected function formHeader( $term, $resultsShown, $totalNum ) {
 674                 global $wgContLang, $wgCanonicalNamespaceNames, $wgLang;
 675
 676                 $sep = '&nbsp;&nbsp;&nbsp;';
 677                 $out = Xml::openElement('div', array( 'class' =>  'mw-search-formheader' ) );
 678                 $out .= Xml::openElement('div');
 679
 680                 $bareterm = $term;
 681                 if( $this->startsWithImage( $term ) )
 682                         $bareterm = substr( $term, strpos( $term, ':' ) + 1 ); // delete all/image prefix
 683
 684                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 685
 686                 // search profiles headers
 687                 $m = wfMsg( 'searchprofile-articles' );
 688                 $tt = wfMsg( 'searchprofile-articles-tooltip',
 689                         $wgLang->commaList( SearchEngine::namespacesAsText( SearchEngine::defaultNamespaces() ) ) );
 690                 $tt = Sanitizer::decodeCharReferences( $tt ); // need to allow entities
 691                 if( $this->active == 'default' ) {
 692                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 693                 } else {
 694                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::defaultNamespaces(), $m, $tt );
 695                 }
 696                 $out .= $sep;
 697
 698                 $m = wfMsg( 'searchprofile-images' );
 699                 $tt = wfMsg( 'searchprofile-images-tooltip' );
 700                 if( $this->active == 'images' ) {
 701                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 702                 } else {
 703                         $out .= $this->makeSearchLink( $bareterm, array( NS_FILE ) , $m, $tt );
 704                 }
 705                 $out .= $sep;
 706
 707                 $m = wfMsg( 'searchprofile-project' );
 708                 $tt = wfMsg( 'searchprofile-project-tooltip',
 709                         $wgLang->commaList( SearchEngine::namespacesAsText( SearchEngine::helpNamespaces() ) ) );
 710                 $tt = Sanitizer::decodeCharReferences( $tt ); // need to allow entities
 711                 if( $this->active == 'help' ) {
 712                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 713                 } else {
 714                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::helpNamespaces(), $m, $tt );
 715                 }
 716                 $out .= $sep;
 717
 718                 $m = wfMsg( 'searchprofile-everything' );
 719                 $tt = wfMsg( 'searchprofile-everything-tooltip' );
 720                 if( $this->active == 'all' ) {
 721                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 722                 } else {
 723                         $out .= $this->makeSearchLink( $bareterm, $nsAllSet, $m, $tt );
 724                 }
 725                 $out .= $sep;
 726
 727                 $m = wfMsg( 'searchprofile-advanced' );
 728                 $tt = wfMsg( 'searchprofile-advanced-tooltip' );
 729                 if( $this->active == 'advanced' ) {
 730                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 731                 } else {
 732                         $out .= $this->makeSearchLink( $bareterm, $this->namespaces, $m, $tt, array( 'advanced' => '1' ) );
 733                 }
 734                 $out .= Xml::closeElement('div') ;
 735
 736                 if ( $resultsShown > 0 ) {
 737                         if ( $totalNum > 0 ){
 738                                 $top = wfMsgExt('showingresultsheader', array( 'parseinline' ),
 739                                         $this->offset+1, $this->offset+$resultsShown, $totalNum, $term, $resultsShown );
 740                         } elseif ( $resultsShown >= $this->limit ) {
 741                                 $top = wfShowingResults( $this->offset, $this->limit );
 742                         } else {
 743                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $resultsShown );
 744                         }
 745                         $out .= "<p>{$top}</p>\n";
 746                 } else
 747                         $out .= "<p>&nbsp;</p>\n";
 748
 749                 $out .= Xml::closeElement('div') ;
 750
 751                 return $out;
 752         }
 753
 754         protected function shortDialog( $term ) {
 755                 global $wgScript;
 756                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 757                 $searchable = SearchEngine::searchableNamespaces();
 758                 $out = Xml::openElement( 'form', array( 'id' => 'search', 'method' => 'get', 'action' => $wgScript ) );
 759                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n";
 760                 // show namespaces only for advanced search
 761                 if( $this->active == 'advanced' ) {
 762                         $active = array();
 763                         foreach( $this->namespaces as $ns ) {
 764                                 $active[$ns] = $searchable[$ns];
 765                         }
 766                         $out .= wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) . "<br/>\n";
 767                         $out .= $this->namespaceTables( $active, 1 )."<br/>\n";
 768                 // Still keep namespace settings otherwise, but don't show them
 769                 } else {
 770                         foreach( $this->namespaces as $ns ) {
 771                                 $out .= Xml::hidden( "ns{$ns}", '1' );
 772                         }
 773                 }
 774                 // Keep redirect setting
 775                 $out .= Xml::hidden( "redirs", (int)$this->searchRedirects );
 776                 // Term box
 777                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . "\n";
 778                 $out .= Xml::hidden( 'fulltext', 'Search' );
 779                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ) );
 780                 //$out .= ' (' . wfMsgExt('searchmenu-help',array('parseinline') ) . ')';
 781                 $out .= Xml::closeElement( 'form' );
 782                 // Add prefix link for single-namespace searches
 783                 $t = Title::newFromText( $term );
 784                 /*if( $t != null && count($this->namespaces) === 1 ) {
 785                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 786                 }*/
 787                 return $out . $this->didYouMeanHtml;
 788         }
 789
 790         /** Make a search link with some target namespaces */
 791         protected function makeSearchLink( $term, $namespaces, $label, $tooltip, $params=array() ) {
 792                 $opt = $params;
 793                 foreach( $namespaces as $n ) {
 794                         $opt['ns' . $n] = 1;
 795                 }
 796                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 797
 798                 $st = SpecialPage::getTitleFor( 'Search' );
 799                 $stParams = wfArrayToCGI( array( 'search' => $term, 'fulltext' => wfMsg( 'search' ) ), $opt );
 800
 801                 return Xml::element( 'a',
 802                         array( 'href'=> $st->getLocalURL( $stParams ), 'title' => $tooltip ),
 803                         $label );
 804         }
 805
 806         /** Check if query starts with image: prefix */
 807         protected function startsWithImage( $term ) {
 808                 global $wgContLang;
 809
 810                 $p = explode( ':', $term );
 811                 if( count( $p ) > 1 ) {
 812                         return $wgContLang->getNsIndex( $p[0] ) == NS_FILE;
 813                 }
 814                 return false;
 815         }
 816
 817         /** Check if query starts with all: prefix */
 818         protected function startsWithAll( $term ) {
 819
 820                 $allkeyword = wfMsgForContent('searchall');
 821
 822                 $p = explode( ':', $term );
 823                 if( count( $p ) > 1 ) {
 824                         return $p[0]  == $allkeyword;
 825                 }
 826                 return false;
 827         }
 828
 829         protected function namespaceTables( $namespaces, $rowsPerTable = 3 ) {
 830                 global $wgContLang;
 831                 // Group namespaces into rows according to subject.
 832                 // Try not to make too many assumptions about namespace numbering.
 833                 $rows = array();
 834                 $tables = "";
 835                 foreach( $namespaces as $ns => $name ) {
 836                         $subj = MWNamespace::getSubject( $ns );
 837                         if( !array_key_exists( $subj, $rows ) ) {
 838                                 $rows[$subj] = "";
 839                         }
 840                         $name = str_replace( '_', ' ', $name );
 841                         if( '' == $name ) {
 842                                 $name = wfMsg( 'blanknamespace' );
 843                         }
 844                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
 845                                 Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
 846                                 Xml::closeElement( 'td' ) . "\n";
 847                 }
 848                 $rows = array_values( $rows );
 849                 $numRows = count( $rows );
 850                 // Lay out namespaces in multiple floating two-column tables so they'll
 851                 // be arranged nicely while still accommodating different screen widths
 852                 // Float to the right on RTL wikis
 853                 $tableStyle = $wgContLang->isRTL() ?
 854                         'float: right; margin: 0 0 0em 1em' : 'float: left; margin: 0 1em 0em 0';
 855                 // Build the final HTML table...
 856                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
 857                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
 858                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
 859                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
 860                         }
 861                         $tables .= Xml::closeElement( 'table' ) . "\n";
 862                 }
 863                 return $tables;
 864         }
 865 }
 866
 867 /**
 868  * implements Special:Search - Run text & title search and display the output
 869  * @ingroup SpecialPage
 870  */
 871 class SpecialSearchOld {
 872
 873         /**
 874          * Set up basic search parameters from the request and user settings.
 875          * Typically you'll pass $wgRequest and $wgUser.
 876          *
 877          * @param WebRequest $request
 878          * @param User $user
 879          * @public
 880          */
 881         function __construct( &$request, &$user ) {
 882                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
 883                 $this->mPrefix = $request->getVal('prefix', '');
 884                 $this->namespaces = $this->powerSearch( $request );
 885                 if( empty( $this->namespaces ) ) {
 886                         $this->namespaces = SearchEngine::userNamespaces( $user );
 887                 }
 888
 889                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
 890                 $this->fulltext = $request->getVal('fulltext');
 891         }
 892
 893         /**
 894          * If an exact title match can be found, jump straight ahead to it.
 895          * @param string $term
 896          * @public
 897          */
 898         function goResult( $term ) {
 899                 global $wgOut;
 900                 global $wgGoToEdit;
 901
 902                 $this->setupPage( $term );
 903
 904                 # Try to go to page as entered.
 905                 $t = Title::newFromText( $term );
 906
 907                 # If the string cannot be used to create a title
 908                 if( is_null( $t ) ){
 909                         return $this->showResults( $term );
 910                 }
 911
 912                 # If there's an exact or very near match, jump right there.
 913                 $t = SearchEngine::getNearMatch( $term );
 914                 if( !is_null( $t ) ) {
 915                         $wgOut->redirect( $t->getFullURL() );
 916                         return;
 917                 }
 918
 919                 # No match, generate an edit URL
 920                 $t = Title::newFromText( $term );
 921                 if( ! is_null( $t ) ) {
 922                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 923                         # If the feature is enabled, go straight to the edit page
 924                         if ( $wgGoToEdit ) {
 925                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 926                                 return;
 927                         }
 928                 }
 929
 930                 $extra = $wgOut->parse( '=='.wfMsgNoTrans( 'notitlematches' )."==\n" );
 931                 if( $t->quickUserCan( 'create' ) && $t->quickUserCan( 'edit' ) ) {
 932                         $extra .= wfMsgExt( 'noexactmatch', 'parse', wfEscapeWikiText( $term ) );
 933                 } else {
 934                         $extra .= wfMsgExt( 'noexactmatch-nocreate', 'parse', wfEscapeWikiText( $term ) );
 935                 }
 936
 937                 $this->showResults( $term, $extra );
 938         }
 939
 940         /**
 941          * @param string $term
 942          * @param string $extra Extra HTML to add after "did you mean"
 943          */
 944         public function showResults( $term, $extra = '' ) {
 945                 wfProfileIn( __METHOD__ );
 946                 global $wgOut, $wgUser;
 947                 $sk = $wgUser->getSkin();
 948
 949                 $search = SearchEngine::create();
 950                 $search->setLimitOffset( $this->limit, $this->offset );
 951                 $search->setNamespaces( $this->namespaces );
 952                 $search->showRedirects = $this->searchRedirects;
 953                 $search->prefix = $this->mPrefix;
 954                 $term = $search->transformSearchTerm($term);
 955
 956                 $this->setupPage( $term );
 957
 958                 $rewritten = $search->replacePrefixes($term);
 959                 $titleMatches = $search->searchTitle( $rewritten );
 960                 $textMatches = $search->searchText( $rewritten );
 961
 962                 // did you mean... suggestions
 963                 if($textMatches && $textMatches->hasSuggestion()){
 964                         $st = SpecialPage::getTitleFor( 'Search' );
 965
 966                         # mirror Go/Search behaviour of original request
 967                         $didYouMeanParams = array( 'search' => $textMatches->getSuggestionQuery() );
 968                         if($this->fulltext != NULL)
 969                                 $didYouMeanParams['fulltext'] = $this->fulltext;
 970                         $stParams = wfArrayToCGI(
 971                                 $didYouMeanParams,
 972                                 $this->powerSearchOptions()
 973                         );
 974
 975                         $suggestLink = $sk->makeKnownLinkObj( $st,
 976                                 $textMatches->getSuggestionSnippet(),
 977                                 $stParams );
 978
 979                         $wgOut->addHTML('<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>');
 980                 }
 981
 982                 $wgOut->addHTML( $extra );
 983
 984                 $wgOut->wrapWikiMsg( "<div class='mw-searchresult'>\n$1</div>", 'searchresulttext' );
 985
 986                 if( '' === trim( $term ) ) {
 987                         // Empty query -- straight view of search form
 988                         $wgOut->setSubtitle( '' );
 989                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 990                         $wgOut->addHTML( $this->powerSearchFocus() );
 991                         wfProfileOut( __METHOD__ );
 992                         return;
 993                 }
 994
 995                 global $wgDisableTextSearch;
 996                 if ( $wgDisableTextSearch ) {
 997                         global $wgSearchForwardUrl;
 998                         if( $wgSearchForwardUrl ) {
 999                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
1000                                 $wgOut->redirect( $url );
1001                                 wfProfileOut( __METHOD__ );
1002                                 return;
1003                         }
1004                         global $wgInputEncoding;
1005                         $wgOut->addHTML(
1006                                 Xml::openElement( 'fieldset' ) .
1007                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
1008                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
1009                                 wfMsg( 'googlesearch',
1010                                         htmlspecialchars( $term ),
1011                                         htmlspecialchars( $wgInputEncoding ),
1012                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
1013                                 ) .
1014                                 Xml::closeElement( 'fieldset' )
1015                         );
1016                         wfProfileOut( __METHOD__ );
1017                         return;
1018                 }
1019
1020                 $wgOut->addHTML( $this->shortDialog( $term ) );
1021
1022                 // Sometimes the search engine knows there are too many hits
1023                 if ($titleMatches instanceof SearchResultTooMany) {
1024                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
1025                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
1026                         $wgOut->addHTML( $this->powerSearchFocus() );
1027                         wfProfileOut( __METHOD__ );
1028                         return;
1029                 }
1030
1031                 // show number of results
1032                 $num = ( $titleMatches ? $titleMatches->numRows() : 0 )
1033                         + ( $textMatches ? $textMatches->numRows() : 0);
1034                 $totalNum = 0;
1035                 if($titleMatches && !is_null($titleMatches->getTotalHits()))
1036                         $totalNum += $titleMatches->getTotalHits();
1037                 if($textMatches && !is_null($textMatches->getTotalHits()))
1038                         $totalNum += $textMatches->getTotalHits();
1039                 if ( $num > 0 ) {
1040                         if ( $totalNum > 0 ){
1041                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
1042                                         $this->offset+1, $this->offset+$num, $totalNum, $num );
1043                         } elseif ( $num >= $this->limit ) {
1044                                 $top = wfShowingResults( $this->offset, $this->limit );
1045                         } else {
1046                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $num );
1047                         }
1048                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
1049                 }
1050
1051                 // prev/next links
1052                 if( $num || $this->offset ) {
1053                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
1054                                 SpecialPage::getTitleFor( 'Search' ),
1055                                 wfArrayToCGI(
1056                                         $this->powerSearchOptions(),
1057                                         array( 'search' => $term ) ),
1058                                         ($num < $this->limit) );
1059                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
1060                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
1061                 } else {
1062                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
1063                 }
1064
1065                 if( $titleMatches ) {
1066                         if( $titleMatches->numRows() ) {
1067                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
1068                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
1069                         }
1070                         $titleMatches->free();
1071                 }
1072
1073                 if( $textMatches ) {
1074                         // output appropriate heading
1075                         if( $textMatches->numRows() ) {
1076                                 if($titleMatches)
1077                                         $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
1078                                 else // if no title matches the heading is redundant
1079                                         $wgOut->addHTML("<hr/>");
1080                         } elseif( $num == 0 ) {
1081                                 # Don't show the 'no text matches' if we received title matches
1082                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
1083                         }
1084                         // show interwiki results if any
1085                         if( $textMatches->hasInterwikiResults() )
1086                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ));
1087                         // show results
1088                         if( $textMatches->numRows() )
1089                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
1090
1091                         $textMatches->free();
1092                 }
1093
1094                 if ( $num == 0 ) {
1095                         $wgOut->addWikiMsg( 'nonefound' );
1096                 }
1097                 if( $num || $this->offset ) {
1098                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
1099                 }
1100                 $wgOut->addHTML( $this->powerSearchBox( $term ) );
1101                 wfProfileOut( __METHOD__ );
1102         }
1103
1104         #------------------------------------------------------------------
1105         # Private methods below this line
1106
1107         /**
1108          *
1109          */
1110         function setupPage( $term ) {
1111                 global $wgOut;
1112                 if( !empty( $term ) ){
1113                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
1114                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term) ) );
1115                 }
1116                 $subtitlemsg = ( Title::newFromText( $term ) ? 'searchsubtitle' : 'searchsubtitleinvalid' );
1117                 $wgOut->setSubtitle( $wgOut->parse( wfMsg( $subtitlemsg, wfEscapeWikiText($term) ) ) );
1118                 $wgOut->setArticleRelated( false );
1119                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1120         }
1121
1122         /**
1123          * Extract "power search" namespace settings from the request object,
1124          * returning a list of index numbers to search.
1125          *
1126          * @param WebRequest $request
1127          * @return array
1128          * @private
1129          */
1130         function powerSearch( &$request ) {
1131                 $arr = array();
1132                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1133                         if( $request->getCheck( 'ns' . $ns ) ) {
1134                                 $arr[] = $ns;
1135                         }
1136                 }
1137                 return $arr;
1138         }
1139
1140         /**
1141          * Reconstruct the 'power search' options for links
1142          * @return array
1143          * @private
1144          */
1145         function powerSearchOptions() {
1146                 $opt = array();
1147                 foreach( $this->namespaces as $n ) {
1148                         $opt['ns' . $n] = 1;
1149                 }
1150                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
1151                 return $opt;
1152         }
1153
1154         /**
1155          * Show whole set of results
1156          *
1157          * @param SearchResultSet $matches
1158          */
1159         function showMatches( &$matches ) {
1160                 wfProfileIn( __METHOD__ );
1161
1162                 global $wgContLang;
1163                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1164
1165                 $out = "";
1166
1167                 $infoLine = $matches->getInfo();
1168                 if( !is_null($infoLine) )
1169                         $out .= "\n<!-- {$infoLine} -->\n";
1170
1171
1172                 $off = $this->offset + 1;
1173                 $out .= "<ul class='mw-search-results'>\n";
1174
1175                 while( $result = $matches->next() ) {
1176                         $out .= $this->showHit( $result, $terms );
1177                 }
1178                 $out .= "</ul>\n";
1179
1180                 // convert the whole thing to desired language variant
1181                 global $wgContLang;
1182                 $out = $wgContLang->convert( $out );
1183                 wfProfileOut( __METHOD__ );
1184                 return $out;
1185         }
1186
1187         /**
1188          * Format a single hit result
1189          * @param SearchResult $result
1190          * @param array $terms terms to highlight
1191          */
1192         function showHit( $result, $terms ) {
1193                 wfProfileIn( __METHOD__ );
1194                 global $wgUser, $wgContLang, $wgLang;
1195
1196                 if( $result->isBrokenTitle() ) {
1197                         wfProfileOut( __METHOD__ );
1198                         return "<!-- Broken link in search result -->\n";
1199                 }
1200
1201                 $t = $result->getTitle();
1202                 $sk = $wgUser->getSkin();
1203
1204                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1205
1206                 //If page content is not readable, just return the title.
1207                 //This is not quite safe, but better than showing excerpts from non-readable pages
1208                 //Note that hiding the entry entirely would screw up paging.
1209                 if (!$t->userCanRead()) {
1210                         wfProfileOut( __METHOD__ );
1211                         return "<li>{$link}</li>\n";
1212                 }
1213
1214                 // If the page doesn't *exist*... our search index is out of date.
1215                 // The least confusing at this point is to drop the result.
1216                 // You may get less results, but... oh well. :P
1217                 if( $result->isMissingRevision() ) {
1218                         wfProfileOut( __METHOD__ );
1219                         return "<!-- missing page " .
1220                                 htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
1221                 }
1222
1223                 // format redirects / relevant sections
1224                 $redirectTitle = $result->getRedirectTitle();
1225                 $redirectText = $result->getRedirectSnippet($terms);
1226                 $sectionTitle = $result->getSectionTitle();
1227                 $sectionText = $result->getSectionSnippet($terms);
1228                 $redirect = '';
1229                 if( !is_null($redirectTitle) )
1230                         $redirect = "<span class='searchalttitle'>"
1231                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1232                                 ."</span>";
1233                 $section = '';
1234                 if( !is_null($sectionTitle) )
1235                         $section = "<span class='searchalttitle'>"
1236                                 .wfMsg('search-section', $sk->makeKnownLinkObj( $sectionTitle, $sectionText))
1237                                 ."</span>";
1238
1239                 // format text extract
1240                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
1241
1242                 // format score
1243                 if( is_null( $result->getScore() ) ) {
1244                         // Search engine doesn't report scoring info
1245                         $score = '';
1246                 } else {
1247                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
1248                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
1249                                 . ' - ';
1250                 }
1251
1252                 // format description
1253                 $byteSize = $result->getByteSize();
1254                 $wordCount = $result->getWordCount();
1255                 $timestamp = $result->getTimestamp();
1256                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
1257                         $sk->formatSize( $byteSize ),
1258                         $wordCount );
1259                 $date = $wgLang->timeanddate( $timestamp );
1260
1261                 // link to related articles if supported
1262                 $related = '';
1263                 if( $result->hasRelated() ){
1264                         $st = SpecialPage::getTitleFor( 'Search' );
1265                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
1266                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
1267                                       'fulltext'  => wfMsg('search') ));
1268
1269                         $related = ' -- ' . $sk->makeKnownLinkObj( $st,
1270                                 wfMsg('search-relatedarticle'), $stParams );
1271                 }
1272
1273                 // Include a thumbnail for media files...
1274                 if( $t->getNamespace() == NS_FILE ) {
1275                         $img = wfFindFile( $t );
1276                         if( $img ) {
1277                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
1278                                 if( $thumb ) {
1279                                         $desc = $img->getShortDesc();
1280                                         wfProfileOut( __METHOD__ );
1281                                         // Ugly table. :D
1282                                         // Float doesn't seem to interact well with the bullets.
1283                                         // Table messes up vertical alignment of the bullet, but I'm
1284                                         // not sure what more I can do about that. :(
1285                                         return "<li>" .
1286                                                 '<table class="searchResultImage">' .
1287                                                 '<tr>' .
1288                                                 '<td width="120" align="center">' .
1289                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
1290                                                 '</td>' .
1291                                                 '<td valign="top">' .
1292                                                 $link .
1293                                                 $extract .
1294                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
1295                                                 '</td>' .
1296                                                 '</tr>' .
1297                                                 '</table>' .
1298                                                 "</li>\n";
1299                                 }
1300                         }
1301                 }
1302
1303                 wfProfileOut( __METHOD__ );
1304                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
1305                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
1306                         "</li>\n";
1307
1308         }
1309
1310         /**
1311          * Show results from other wikis
1312          *
1313          * @param SearchResultSet $matches
1314          */
1315         function showInterwiki( &$matches, $query ) {
1316                 wfProfileIn( __METHOD__ );
1317
1318                 global $wgContLang;
1319                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1320
1321                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".wfMsg('search-interwiki-caption')."</div>\n";
1322                 $off = $this->offset + 1;
1323                 $out .= "<ul start='{$off}' class='mw-search-iwresults'>\n";
1324
1325                 // work out custom project captions
1326                 $customCaptions = array();
1327                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
1328                 foreach($customLines as $line){
1329                         $parts = explode(":",$line,2);
1330                         if(count($parts) == 2) // validate line
1331                                 $customCaptions[$parts[0]] = $parts[1];
1332                 }
1333
1334
1335                 $prev = null;
1336                 while( $result = $matches->next() ) {
1337                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
1338                         $prev = $result->getInterwikiPrefix();
1339                 }
1340                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
1341                 $out .= "</ul></div>\n";
1342
1343                 // convert the whole thing to desired language variant
1344                 global $wgContLang;
1345                 $out = $wgContLang->convert( $out );
1346                 wfProfileOut( __METHOD__ );
1347                 return $out;
1348         }
1349
1350         /**
1351          * Show single interwiki link
1352          *
1353          * @param SearchResult $result
1354          * @param string $lastInterwiki
1355          * @param array $terms
1356          * @param string $query
1357          * @param array $customCaptions iw prefix -> caption
1358          */
1359         function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
1360                 wfProfileIn( __METHOD__ );
1361                 global $wgUser, $wgContLang, $wgLang;
1362
1363                 if( $result->isBrokenTitle() ) {
1364                         wfProfileOut( __METHOD__ );
1365                         return "<!-- Broken link in search result -->\n";
1366                 }
1367
1368                 $t = $result->getTitle();
1369                 $sk = $wgUser->getSkin();
1370
1371                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1372
1373                 // format redirect if any
1374                 $redirectTitle = $result->getRedirectTitle();
1375                 $redirectText = $result->getRedirectSnippet($terms);
1376                 $redirect = '';
1377                 if( !is_null($redirectTitle) )
1378                         $redirect = "<span class='searchalttitle'>"
1379                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1380                                 ."</span>";
1381
1382                 $out = "";
1383                 // display project name
1384                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()){
1385                         if( key_exists($t->getInterwiki(),$customCaptions) )
1386                                 // captions from 'search-interwiki-custom'
1387                                 $caption = $customCaptions[$t->getInterwiki()];
1388                         else{
1389                                 // default is to show the hostname of the other wiki which might suck
1390                                 // if there are many wikis on one hostname
1391                                 $parsed = parse_url($t->getFullURL());
1392                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
1393                         }
1394                         // "more results" link (special page stuff could be localized, but we might not know target lang)
1395                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
1396                         $searchLink = $sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
1397                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
1398                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>{$searchLink}</span>{$caption}</div>\n<ul>";
1399                 }
1400
1401                 $out .= "<li>{$link} {$redirect}</li>\n";
1402                 wfProfileOut( __METHOD__ );
1403                 return $out;
1404         }
1405
1406
1407         /**
1408          * Generates the power search box at bottom of [[Special:Search]]
1409          * @param $term string: search term
1410          * @return $out string: HTML form
1411          */
1412         function powerSearchBox( $term ) {
1413                 global $wgScript, $wgContLang;
1414
1415                 $namespaces = SearchEngine::searchableNamespaces();
1416
1417                 // group namespaces into rows according to subject; try not to make too
1418                 // many assumptions about namespace numbering
1419                 $rows = array();
1420                 foreach( $namespaces as $ns => $name ) {
1421                         $subj = MWNamespace::getSubject( $ns );
1422                         if( !array_key_exists( $subj, $rows ) ) {
1423                                 $rows[$subj] = "";
1424                         }
1425                         $name = str_replace( '_', ' ', $name );
1426                         if( '' == $name ) {
1427                                 $name = wfMsg( 'blanknamespace' );
1428                         }
1429                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
1430                                         Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
1431                                         Xml::closeElement( 'td' ) . "\n";
1432                 }
1433                 $rows = array_values( $rows );
1434                 $numRows = count( $rows );
1435
1436                 // lay out namespaces in multiple floating two-column tables so they'll
1437                 // be arranged nicely while still accommodating different screen widths
1438                 $rowsPerTable = 3;  // seems to look nice
1439
1440                 // float to the right on RTL wikis
1441                 $tableStyle = ( $wgContLang->isRTL() ?
1442                                 'float: right; margin: 0 0 1em 1em' :
1443                                 'float: left; margin: 0 1em 1em 0' );
1444
1445                 $tables = "";
1446                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
1447                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
1448                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
1449                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
1450                         }
1451                         $tables .= Xml::closeElement( 'table' ) . "\n";
1452                 }
1453
1454                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
1455                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
1456                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
1457                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ) ) . "\n";
1458                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1459                 $searchHiddens = Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n";
1460                 $searchHiddens .= Xml::hidden( 'fulltext', 'Advanced search' ) . "\n";
1461
1462                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
1463                         Xml::fieldset( wfMsg( 'powersearch-legend' ),
1464                                 "<p>" .
1465                                 wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
1466                                 "</p>\n" .
1467                                 $tables .
1468                                 "<hr style=\"clear: both\" />\n" .
1469                                 "<p>" .
1470                                 $redirect . " " . $redirectLabel .
1471                                 "</p>\n" .
1472                                 wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
1473                                 "&nbsp;" .
1474                                 $searchField .
1475                                 "&nbsp;" .
1476                                 $searchHiddens .
1477                                 $searchButton ) .
1478                         "</form>";
1479
1480                 return $out;
1481         }
1482
1483         function powerSearchFocus() {
1484                 global $wgJsMimeType;
1485                 return "<script type=\"$wgJsMimeType\">" .
1486                         "hookEvent(\"load\", function(){" .
1487                                 "document.getElementById('powerSearchText').focus();" .
1488                         "});" .
1489                         "</script>";
1490         }
1491
1492         function shortDialog($term) {
1493                 global $wgScript;
1494
1495                 $out  = Xml::openElement( 'form', array(
1496                         'id' => 'search',
1497                         'method' => 'get',
1498                         'action' => $wgScript
1499                 ));
1500                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1501                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . ' ';
1502                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1503                         if( in_array( $ns, $this->namespaces ) ) {
1504                                 $out .= Xml::hidden( "ns{$ns}", '1' );
1505                         }
1506                 }
1507                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() );
1508                 $out .= Xml::hidden( 'fulltext', 'Search' );
1509                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ) );
1510                 $out .= Xml::closeElement( 'form' );
1511
1512                 return $out;
1513         }
1514 }