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, '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                 # 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         }
  77
  78         /**
  79          * If an exact title match can be found, jump straight ahead to it.
  80          * @param string $term
  81          */
  82         public function goResult( $term ) {
  83                 global $wgOut;
  84                 $this->setupPage( $term );
  85                 # Try to go to page as entered.
  86                 $t = Title::newFromText( $term );
  87                 # If the string cannot be used to create a title
  88                 if( is_null( $t ) ) {
  89                         return $this->showResults( $term );
  90                 }
  91                 # If there's an exact or very near match, jump right there.
  92                 $t = SearchEngine::getNearMatch( $term );
  93                 if( !is_null( $t ) ) {
  94                         $wgOut->redirect( $t->getFullURL() );
  95                         return;
  96                 }
  97                 # No match, generate an edit URL
  98                 $t = Title::newFromText( $term );
  99                 if( !is_null( $t ) ) {
 100                         global $wgGoToEdit;
 101                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 102                         # If the feature is enabled, go straight to the edit page
 103                         if( $wgGoToEdit ) {
 104                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 105                                 return;
 106                         }
 107                 }
 108                 return $this->showResults( $term );
 109         }
 110
 111         /**
 112          * @param string $term
 113          */
 114         public function showResults( $term ) {
 115                 global $wgOut, $wgDisableTextSearch, $wgContLang;
 116                 wfProfileIn( __METHOD__ );
 117
 118                 $this->setupPage( $term );
 119                 $this->searchEngine = SearchEngine::create();
 120
 121                 if( $wgDisableTextSearch ) {
 122                         global $wgSearchForwardUrl;
 123                         if( $wgSearchForwardUrl ) {
 124                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 125                                 $wgOut->redirect( $url );
 126                                 wfProfileOut( __METHOD__ );
 127                                 return;
 128                         }
 129                         global $wgInputEncoding;
 130                         $wgOut->addHTML(
 131                                 Xml::openElement( 'fieldset' ) .
 132                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 133                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 134                                 wfMsg( 'googlesearch',
 135                                         htmlspecialchars( $term ),
 136                                         htmlspecialchars( $wgInputEncoding ),
 137                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 138                                 ) .
 139                                 Xml::closeElement( 'fieldset' )
 140                         );
 141                         wfProfileOut( __METHOD__ );
 142                         return;
 143                 }
 144
 145                 $t = Title::newFromText( $term );
 146                 // fetch search results
 147                 $search =& $this->searchEngine;
 148                 $search->setLimitOffset( $this->limit, $this->offset );
 149                 $search->setNamespaces( $this->namespaces );
 150                 $search->showRedirects = $this->searchRedirects;
 151                 $rewritten = $search->replacePrefixes($term);
 152
 153                 $titleMatches = $search->searchTitle( $rewritten );
 154                 if( !($titleMatches instanceof SearchResultTooMany))
 155                         $textMatches = $search->searchText( $rewritten );
 156
 157                 // did you mean... suggestions
 158                 if( $textMatches && $textMatches->hasSuggestion() ) {
 159                         $st = SpecialPage::getTitleFor( 'Search' );
 160                         $stParams = wfArrayToCGI(
 161                                 array( 'search' => $textMatches->getSuggestionQuery(), 'fulltext'       => wfMsg('search') ),
 162                                 $this->powerSearchOptions()
 163                         );
 164                         $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
 165                                 $textMatches->getSuggestionSnippet().'</a>';
 166
 167                         $this->didYouMeanHtml = '<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>';
 168                 }
 169
 170                 // start rendering the page
 171                 $wgOut->addHtml(
 172                         Xml::openElement( 'table', array( 'border'=>0, 'cellpadding'=>0, 'cellspacing'=>0 ) ) .
 173                         Xml::openElement( 'tr' ) .
 174                         Xml::openElement( 'td' ) . "\n" .
 175                         ( $this->searchAdvanced ? $this->powerSearchBox( $term ) : $this->shortDialog( $term ) ) .
 176                         Xml::closeElement('td') .
 177                         Xml::closeElement('tr') .
 178                         Xml::closeElement('table')
 179                 );
 180
 181                 // Sometimes the search engine knows there are too many hits
 182                 if( $titleMatches instanceof SearchResultTooMany ) {
 183                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 184                         wfProfileOut( __METHOD__ );
 185                         return;
 186                 }
 187
 188                 $filePrefix = $wgContLang->getFormattedNsText(NS_FILE).':';
 189                 if( '' === trim( $term ) || $filePrefix === trim( $term ) ) {
 190                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 191                         // Empty query -- straight view of search form
 192                         wfProfileOut( __METHOD__ );
 193                         return;
 194                 }
 195
 196                 // show direct page/create link
 197                 if( !is_null($t) ) {
 198                         if( !$t->exists() ) {
 199                                 $wgOut->addWikiMsg( 'searchmenu-new', wfEscapeWikiText( $t->getPrefixedText() ) );
 200                         } else {
 201                                 $wgOut->addWikiMsg( 'searchmenu-exists', wfEscapeWikiText( $t->getPrefixedText() ) );
 202                         }
 203                 }
 204
 205                 // Get number of results
 206                 $titleMatchesSQL = $titleMatches ? $titleMatches->numRows() : 0;
 207                 $textMatchesSQL = $textMatches ? $textMatches->numRows() : 0;
 208                 // Total initial query matches (possible false positives)
 209                 $numSQL = $titleMatchesSQL + $textMatchesSQL;
 210                 // Get total actual results (after second filtering, if any)
 211                 $numTitleMatches = $titleMatches && !is_null( $titleMatches->getTotalHits() ) ?
 212                         $titleMatches->getTotalHits() : $titleMatchesSQL;
 213                 $numTextMatches = $textMatches && !is_null( $textMatches->getTotalHits() ) ?
 214                         $textMatches->getTotalHits() : $textMatchesSQL;
 215                 $totalRes = $numTitleMatches + $numTextMatches;
 216
 217                 // show number of results and current offset
 218                 if( $numSQL > 0 ) {
 219                         if( $numSQL > 0 ) {
 220                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
 221                                         $this->offset+1, $this->offset+$numSQL, $totalRes, $numSQL );
 222                         } elseif( $numSQL >= $this->limit ) {
 223                                 $top = wfShowingResults( $this->offset, $this->limit );
 224                         } else {
 225                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $numSQL );
 226                         }
 227                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
 228                 }
 229
 230                 // prev/next links
 231                 if( $numSQL || $this->offset ) {
 232                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
 233                                 SpecialPage::getTitleFor( 'Search' ),
 234                                 wfArrayToCGI( $this->powerSearchOptions(), array( 'search' => $term ) ),
 235                                 max( $titleMatchesSQL, $textMatchesSQL ) < $this->limit
 236                         );
 237                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
 238                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 239                 } else {
 240                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 241                 }
 242
 243                 $wgOut->addHtml( "<div class='searchresults'>" );
 244                 if( $titleMatches ) {
 245                         if( $numTitleMatches > 0 ) {
 246                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
 247                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
 248                         }
 249                         $titleMatches->free();
 250                 }
 251                 if( $textMatches ) {
 252                         // output appropriate heading
 253                         if( $numTextMatches > 0 && $numTitleMatches > 0 ) {
 254                                 // if no title matches the heading is redundant
 255                                 $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
 256                         } elseif( $totalRes == 0 ) {
 257                                 # Don't show the 'no text matches' if we received title matches
 258                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
 259                         }
 260                         // show interwiki results if any
 261                         if( $textMatches->hasInterwikiResults() ) {
 262                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
 263                         }
 264                         // show results
 265                         if( $numTextMatches > 0 ) {
 266                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
 267                         }
 268
 269                         $textMatches->free();
 270                 }
 271                 if( $totalRes === 0 ) {
 272                         $wgOut->addWikiMsg( 'search-nonefound' );
 273                 }
 274                 $wgOut->addHtml( "</div>" );
 275                 if( $totalRes === 0 ) {
 276                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 277                 }
 278
 279                 if( $numSQL || $this->offset ) {
 280                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 281                 }
 282                 wfProfileOut( __METHOD__ );
 283         }
 284
 285         /**
 286          *
 287          */
 288         protected function setupPage( $term ) {
 289                 global $wgOut;
 290                 // Figure out the active search profile header
 291                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 292                 if( $this->searchAdvanced )
 293                         $this->active = 'advanced';
 294                 else if( $this->namespaces === NS_FILE || $this->startsWithImage( $term ) )
 295                         $this->active = 'images';
 296                 elseif( $this->namespaces === $nsAllSet )
 297                         $this->active = 'all';
 298                 elseif( $this->namespaces === SearchEngine::defaultNamespaces() )
 299                         $this->active = 'default';
 300                 elseif( $this->namespaces === SearchEngine::projectNamespaces() )
 301                         $this->active = 'project';
 302                 else
 303                         $this->active = 'advanced';
 304                 # Should advanced UI be used?
 305                 $this->searchAdvanced = ($this->active === 'advanced');
 306                 if( !empty( $term ) ) {
 307                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
 308                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term ) ) );
 309                 }
 310                 $wgOut->setArticleRelated( false );
 311                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 312         }
 313
 314         /**
 315          * Extract "power search" namespace settings from the request object,
 316          * returning a list of index numbers to search.
 317          *
 318          * @param WebRequest $request
 319          * @return array
 320          */
 321         protected function powerSearch( &$request ) {
 322                 $arr = array();
 323                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 324                         if( $request->getCheck( 'ns' . $ns ) ) {
 325                                 $arr[] = $ns;
 326                         }
 327                 }
 328                 return $arr;
 329         }
 330
 331         /**
 332          * Reconstruct the 'power search' options for links
 333          * @return array
 334          */
 335         protected function powerSearchOptions() {
 336                 $opt = array();
 337                 foreach( $this->namespaces as $n ) {
 338                         $opt['ns' . $n] = 1;
 339                 }
 340                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 341                 if( $this->searchAdvanced ) {
 342                         $opt['advanced'] = $this->searchAdvanced;
 343                 }
 344                 return $opt;
 345         }
 346
 347         /**
 348          * Show whole set of results
 349          *
 350          * @param SearchResultSet $matches
 351          */
 352         protected function showMatches( &$matches ) {
 353                 global $wgContLang;
 354                 wfProfileIn( __METHOD__ );
 355
 356                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 357
 358                 $out = "";
 359                 $infoLine = $matches->getInfo();
 360                 if( !is_null($infoLine) ) {
 361                         $out .= "\n<!-- {$infoLine} -->\n";
 362                 }
 363                 $off = $this->offset + 1;
 364                 $out .= "<ul class='mw-search-results'>\n";
 365                 while( $result = $matches->next() ) {
 366                         $out .= $this->showHit( $result, $terms );
 367                 }
 368                 $out .= "</ul>\n";
 369
 370                 // convert the whole thing to desired language variant
 371                 $out = $wgContLang->convert( $out );
 372                 wfProfileOut( __METHOD__ );
 373                 return $out;
 374         }
 375
 376         /**
 377          * Format a single hit result
 378          * @param SearchResult $result
 379          * @param array $terms terms to highlight
 380          */
 381         protected function showHit( $result, $terms ) {
 382                 global $wgContLang, $wgLang;
 383                 wfProfileIn( __METHOD__ );
 384
 385                 if( $result->isBrokenTitle() ) {
 386                         wfProfileOut( __METHOD__ );
 387                         return "<!-- Broken link in search result -->\n";
 388                 }
 389
 390                 $t = $result->getTitle();
 391
 392                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 393
 394                 //If page content is not readable, just return the title.
 395                 //This is not quite safe, but better than showing excerpts from non-readable pages
 396                 //Note that hiding the entry entirely would screw up paging.
 397                 if( !$t->userCanRead() ) {
 398                         wfProfileOut( __METHOD__ );
 399                         return "<li>{$link}</li>\n";
 400                 }
 401
 402                 // If the page doesn't *exist*... our search index is out of date.
 403                 // The least confusing at this point is to drop the result.
 404                 // You may get less results, but... oh well. :P
 405                 if( $result->isMissingRevision() ) {
 406                         wfProfileOut( __METHOD__ );
 407                         return "<!-- missing page " . htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
 408                 }
 409
 410                 // format redirects / relevant sections
 411                 $redirectTitle = $result->getRedirectTitle();
 412                 $redirectText = $result->getRedirectSnippet($terms);
 413                 $sectionTitle = $result->getSectionTitle();
 414                 $sectionText = $result->getSectionSnippet($terms);
 415                 $redirect = '';
 416                 if( !is_null($redirectTitle) )
 417                         $redirect = "<span class='searchalttitle'>"
 418                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 419                                 ."</span>";
 420                 $section = '';
 421                 if( !is_null($sectionTitle) )
 422                         $section = "<span class='searchalttitle'>"
 423                                 .wfMsg('search-section', $this->sk->makeKnownLinkObj( $sectionTitle, $sectionText))
 424                                 ."</span>";
 425
 426                 // format text extract
 427                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
 428
 429                 // format score
 430                 if( is_null( $result->getScore() ) ) {
 431                         // Search engine doesn't report scoring info
 432                         $score = '';
 433                 } else {
 434                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 435                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
 436                                 . ' - ';
 437                 }
 438
 439                 // format description
 440                 $byteSize = $result->getByteSize();
 441                 $wordCount = $result->getWordCount();
 442                 $timestamp = $result->getTimestamp();
 443                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
 444                         $this->sk->formatSize( $byteSize ), $wordCount );
 445                 $date = $wgLang->timeanddate( $timestamp );
 446
 447                 // link to related articles if supported
 448                 $related = '';
 449                 if( $result->hasRelated() ) {
 450                         $st = SpecialPage::getTitleFor( 'Search' );
 451                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
 452                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
 453                                       'fulltext'  => wfMsg('search') ));
 454
 455                         $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'.
 456                                 wfMsg('search-relatedarticle').'</a>';
 457                 }
 458
 459                 // Include a thumbnail for media files...
 460                 if( $t->getNamespace() == NS_FILE ) {
 461                         $img = wfFindFile( $t );
 462                         if( $img ) {
 463                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 464                                 if( $thumb ) {
 465                                         $desc = $img->getShortDesc();
 466                                         wfProfileOut( __METHOD__ );
 467                                         // Float doesn't seem to interact well with the bullets.
 468                                         // Table messes up vertical alignment of the bullets.
 469                                         // Bullets are therefore disabled (didn't look great anyway).
 470                                         return "<li>" .
 471                                                 '<table class="searchResultImage">' .
 472                                                 '<tr>' .
 473                                                 '<td width="120" align="center" valign="top">' .
 474                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 475                                                 '</td>' .
 476                                                 '<td valign="top">' .
 477                                                 $link .
 478                                                 $extract .
 479                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 480                                                 '</td>' .
 481                                                 '</tr>' .
 482                                                 '</table>' .
 483                                                 "</li>\n";
 484                                 }
 485                         }
 486                 }
 487
 488                 wfProfileOut( __METHOD__ );
 489                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
 490                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 491                         "</li>\n";
 492
 493         }
 494
 495         /**
 496          * Show results from other wikis
 497          *
 498          * @param SearchResultSet $matches
 499          */
 500         protected function showInterwiki( &$matches, $query ) {
 501                 global $wgContLang;
 502                 wfProfileIn( __METHOD__ );
 503                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 504
 505                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".
 506                         wfMsg('search-interwiki-caption')."</div>\n";
 507                 $off = $this->offset + 1;
 508                 $out .= "<ul class='mw-search-iwresults'>\n";
 509
 510                 // work out custom project captions
 511                 $customCaptions = array();
 512                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
 513                 foreach($customLines as $line) {
 514                         $parts = explode(":",$line,2);
 515                         if(count($parts) == 2) // validate line
 516                                 $customCaptions[$parts[0]] = $parts[1];
 517                 }
 518
 519                 $prev = null;
 520                 while( $result = $matches->next() ) {
 521                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
 522                         $prev = $result->getInterwikiPrefix();
 523                 }
 524                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 525                 $out .= "</ul></div>\n";
 526
 527                 // convert the whole thing to desired language variant
 528                 $out = $wgContLang->convert( $out );
 529                 wfProfileOut( __METHOD__ );
 530                 return $out;
 531         }
 532
 533         /**
 534          * Show single interwiki link
 535          *
 536          * @param SearchResult $result
 537          * @param string $lastInterwiki
 538          * @param array $terms
 539          * @param string $query
 540          * @param array $customCaptions iw prefix -> caption
 541          */
 542         protected function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
 543                 wfProfileIn( __METHOD__ );
 544                 global $wgContLang, $wgLang;
 545
 546                 if( $result->isBrokenTitle() ) {
 547                         wfProfileOut( __METHOD__ );
 548                         return "<!-- Broken link in search result -->\n";
 549                 }
 550
 551                 $t = $result->getTitle();
 552
 553                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 554
 555                 // format redirect if any
 556                 $redirectTitle = $result->getRedirectTitle();
 557                 $redirectText = $result->getRedirectSnippet($terms);
 558                 $redirect = '';
 559                 if( !is_null($redirectTitle) )
 560                         $redirect = "<span class='searchalttitle'>"
 561                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 562                                 ."</span>";
 563
 564                 $out = "";
 565                 // display project name
 566                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()) {
 567                         if( key_exists($t->getInterwiki(),$customCaptions) )
 568                                 // captions from 'search-interwiki-custom'
 569                                 $caption = $customCaptions[$t->getInterwiki()];
 570                         else{
 571                                 // default is to show the hostname of the other wiki which might suck
 572                                 // if there are many wikis on one hostname
 573                                 $parsed = parse_url($t->getFullURL());
 574                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
 575                         }
 576                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 577                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
 578                         $searchLink = $this->sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
 579                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
 580                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
 581                                 {$searchLink}</span>{$caption}</div>\n<ul>";
 582                 }
 583
 584                 $out .= "<li>{$link} {$redirect}</li>\n";
 585                 wfProfileOut( __METHOD__ );
 586                 return $out;
 587         }
 588
 589
 590         /**
 591          * Generates the power search box at bottom of [[Special:Search]]
 592          * @param $term string: search term
 593          * @return $out string: HTML form
 594          */
 595         protected function powerSearchBox( $term ) {
 596                 global $wgScript;
 597
 598                 $namespaces = SearchEngine::searchableNamespaces();
 599
 600                 $tables = $this->namespaceTables( $namespaces );
 601
 602                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
 603                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
 604                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
 605                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' )) . "\n";
 606                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 607
 608                 $redirectText = '';
 609                 // show redirects check only if backend supports it
 610                 if($this->searchEngine->acceptListRedirects()){
 611                         "<p>".
 612                         $redirectText =  $redirect . " " . $redirectLabel
 613                         ."</p>";
 614                 }
 615
 616                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
 617                         Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n" .
 618                         "<p>" .
 619                         wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
 620                         "</p>\n" .
 621                         '<input type="hidden" name="advanced" value="'.$this->searchAdvanced."\"/>\n".
 622                         $tables .
 623                         "<hr style=\"clear: both;\" />\n".
 624                         $redirectText ."\n".
 625                         "<div style=\"padding-top:2px;padding-bottom:2px;\">".
 626                         wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
 627                         "&nbsp;" .
 628                         $searchField .
 629                         "&nbsp;" .
 630                         $searchButton .
 631                         "</div>".
 632                         "</form>";
 633                 $t = Title::newFromText( $term );
 634                 /* if( $t != null && count($this->namespaces) === 1 ) {
 635                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 636                 } */
 637                 return Xml::openElement( 'fieldset', array('id' => 'mw-searchoptions','style' => 'margin:0em;') ) .
 638                         Xml::element( 'legend', null, wfMsg('powersearch-legend') ) .
 639                         $this->formHeader($term) . $out . $this->didYouMeanHtml .
 640                         Xml::closeElement( 'fieldset' );
 641         }
 642
 643         protected function searchFocus() {
 644                 global $wgJsMimeType;
 645                 return "<script type=\"$wgJsMimeType\">" .
 646                         "hookEvent(\"load\", function() {" .
 647                                 "document.getElementById('searchText').focus();" .
 648                         "});" .
 649                         "</script>";
 650         }
 651
 652         protected function powerSearchFocus() {
 653                 global $wgJsMimeType;
 654                 return "<script type=\"$wgJsMimeType\">" .
 655                         "hookEvent(\"load\", function() {" .
 656                                 "document.getElementById('powerSearchText').focus();" .
 657                         "});" .
 658                         "</script>";
 659         }
 660
 661         protected function formHeader( $term ) {
 662                 global $wgContLang, $wgCanonicalNamespaceNames;
 663
 664                 $sep = '&nbsp;&nbsp;&nbsp;';
 665                 $out = Xml::openElement('div', array( 'style' => 'padding-bottom:0.5em;' ) );
 666
 667                 $bareterm = $term;
 668                 if( $this->startsWithImage( $term ) )
 669                         $bareterm = substr( $term, strpos( $term, ':' ) + 1 ); // delete all/image prefix
 670
 671                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 672
 673                 // search profiles headers
 674                 $m = wfMsg( 'searchprofile-articles' );
 675                 $tt = wfMsg( 'searchprofile-articles-tooltip',
 676                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::defaultNamespaces() ) ) );
 677                 if( $this->active == 'default' ) {
 678                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 679                 } else {
 680                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::defaultNamespaces(), $m, $tt );
 681                 }
 682                 $out .= $sep;
 683
 684                 $m = wfMsg( 'searchprofile-images' );
 685                 $tt = wfMsg( 'searchprofile-images-tooltip' );
 686                 if( $this->active == 'images' ) {
 687                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 688                 } else {
 689                         $imageTextForm = $wgContLang->getFormattedNsText(NS_FILE).':'.$bareterm;
 690                         $out .= $this->makeSearchLink( $imageTextForm, array( NS_FILE ) , $m, $tt );
 691                 }
 692                 $out .= $sep;
 693
 694                 /*
 695                 $m = wfMsg( 'searchprofile-articles-and-proj' );
 696                 $tt = wfMsg( 'searchprofile-project-tooltip',
 697                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::defaultAndProjectNamespaces() ) ) );
 698                 if( $this->active == 'withproject' ) {
 699                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 700                 } else {
 701                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::defaultAndProjectNamespaces(), $m, $tt );
 702                 }
 703                 $out .= $sep;
 704                 */
 705
 706                 $m = wfMsg( 'searchprofile-project' );
 707                 $tt = wfMsg( 'searchprofile-project-tooltip',
 708                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::projectNamespaces() ) ) );
 709                 if( $this->active == 'project' ) {
 710                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 711                 } else {
 712                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::projectNamespaces(), $m, $tt );
 713                 }
 714                 $out .= $sep;
 715
 716                 $m = wfMsg( 'searchprofile-everything' );
 717                 $tt = wfMsg( 'searchprofile-everything-tooltip' );
 718                 if( $this->active == 'all' ) {
 719                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 720                 } else {
 721                         $out .= $this->makeSearchLink( $bareterm, $nsAllSet, $m, $tt );
 722                 }
 723                 $out .= $sep;
 724
 725                 $m = wfMsg( 'searchprofile-advanced' );
 726                 $tt = wfMsg( 'searchprofile-advanced-tooltip' );
 727                 if( $this->active == 'advanced' ) {
 728                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 729                 } else {
 730                         $out .= $this->makeSearchLink( $bareterm, $this->namespaces, $m, $tt, array( 'advanced' => '1' ) );
 731                 }
 732                 $out .= Xml::closeElement('div') ;
 733
 734                 return $out;
 735         }
 736
 737         protected function shortDialog( $term ) {
 738                 global $wgScript;
 739                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 740                 $searchable = SearchEngine::searchableNamespaces();
 741                 $out = Xml::openElement( 'form', array( 'id' => 'search', 'method' => 'get', 'action' => $wgScript ) );
 742                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n";
 743                 // show namespaces only for advanced search
 744                 if( $this->active == 'advanced' ) {
 745                         $active = array();
 746                         foreach( $this->namespaces as $ns ) {
 747                                 $active[$ns] = $searchable[$ns];
 748                         }
 749                         $out .= wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) . "<br/>\n";
 750                         $out .= $this->namespaceTables( $active, 1 )."<br/>\n";
 751                 // Still keep namespace settings otherwise, but don't show them
 752                 } else {
 753                         foreach( $this->namespaces as $ns ) {
 754                                 $out .= Xml::hidden( "ns{$ns}", '1' );
 755                         }
 756                 }
 757                 // Keep redirect setting
 758                 $out .= Xml::hidden( "redirs", (int)$this->searchRedirects );
 759                 // Term box
 760                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . "\n";
 761                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
 762                 $out .= ' (' . wfMsgExt('searchmenu-help',array('parseinline') ) . ')';
 763                 $out .= Xml::closeElement( 'form' );
 764                 // Add prefix link for single-namespace searches
 765                 $t = Title::newFromText( $term );
 766                 /*if( $t != null && count($this->namespaces) === 1 ) {
 767                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 768                 }*/
 769                 return Xml::openElement( 'fieldset', array('id' => 'mw-searchoptions','style' => 'margin:0em;') ) .
 770                         Xml::element( 'legend', null, wfMsg('searchmenu-legend') ) .
 771                         $this->formHeader($term) . $out . $this->didYouMeanHtml .
 772                         Xml::closeElement( 'fieldset' );
 773         }
 774
 775         /** Make a search link with some target namespaces */
 776         protected function makeSearchLink( $term, $namespaces, $label, $tooltip, $params=array() ) {
 777                 $opt = $params;
 778                 foreach( $namespaces as $n ) {
 779                         $opt['ns' . $n] = 1;
 780                 }
 781                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 782
 783                 $st = SpecialPage::getTitleFor( 'Search' );
 784                 $stParams = wfArrayToCGI( array( 'search' => $term, 'fulltext' => wfMsg( 'search' ) ), $opt );
 785
 786                 return Xml::element( 'a',
 787                         array( 'href'=> $st->getLocalURL( $stParams ), 'title' => $tooltip ),
 788                         $label );
 789         }
 790
 791         /** Check if query starts with image: prefix */
 792         protected function startsWithImage( $term ) {
 793                 global $wgContLang;
 794
 795                 $p = explode( ':', $term );
 796                 if( count( $p ) > 1 ) {
 797                         return $wgContLang->getNsIndex( $p[0] ) == NS_FILE;
 798                 }
 799                 return false;
 800         }
 801
 802         protected function namespaceTables( $namespaces, $rowsPerTable = 3 ) {
 803                 global $wgContLang;
 804                 // Group namespaces into rows according to subject.
 805                 // Try not to make too many assumptions about namespace numbering.
 806                 $rows = array();
 807                 $tables = "";
 808                 foreach( $namespaces as $ns => $name ) {
 809                         $subj = Namespace::getSubject( $ns );
 810                         if( !array_key_exists( $subj, $rows ) ) {
 811                                 $rows[$subj] = "";
 812                         }
 813                         $name = str_replace( '_', ' ', $name );
 814                         if( '' == $name ) {
 815                                 $name = wfMsg( 'blanknamespace' );
 816                         }
 817                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
 818                                 Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
 819                                 Xml::closeElement( 'td' ) . "\n";
 820                 }
 821                 $rows = array_values( $rows );
 822                 $numRows = count( $rows );
 823                 // Lay out namespaces in multiple floating two-column tables so they'll
 824                 // be arranged nicely while still accommodating different screen widths
 825                 // Float to the right on RTL wikis
 826                 $tableStyle = $wgContLang->isRTL() ?
 827                         'float: right; margin: 0 0 0em 1em' : 'float: left; margin: 0 1em 0em 0';
 828                 // Build the final HTML table...
 829                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
 830                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
 831                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
 832                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
 833                         }
 834                         $tables .= Xml::closeElement( 'table' ) . "\n";
 835                 }
 836                 return $tables;
 837         }
 838 }
 839
 840 /**
 841  * implements Special:Search - Run text & title search and display the output
 842  * @ingroup SpecialPage
 843  */
 844 class SpecialSearchOld {
 845
 846         /**
 847          * Set up basic search parameters from the request and user settings.
 848          * Typically you'll pass $wgRequest and $wgUser.
 849          *
 850          * @param WebRequest $request
 851          * @param User $user
 852          * @public
 853          */
 854         function __construct( &$request, &$user ) {
 855                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
 856
 857                 $this->namespaces = $this->powerSearch( $request );
 858                 if( empty( $this->namespaces ) ) {
 859                         $this->namespaces = SearchEngine::userNamespaces( $user );
 860                 }
 861
 862                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
 863         }
 864
 865         /**
 866          * If an exact title match can be found, jump straight ahead to it.
 867          * @param string $term
 868          * @public
 869          */
 870         function goResult( $term ) {
 871                 global $wgOut;
 872                 global $wgGoToEdit;
 873
 874                 $this->setupPage( $term );
 875
 876                 # Try to go to page as entered.
 877                 $t = Title::newFromText( $term );
 878
 879                 # If the string cannot be used to create a title
 880                 if( is_null( $t ) ){
 881                         return $this->showResults( $term );
 882                 }
 883
 884                 # If there's an exact or very near match, jump right there.
 885                 $t = SearchEngine::getNearMatch( $term );
 886                 if( !is_null( $t ) ) {
 887                         $wgOut->redirect( $t->getFullURL() );
 888                         return;
 889                 }
 890
 891                 # No match, generate an edit URL
 892                 $t = Title::newFromText( $term );
 893                 if( ! is_null( $t ) ) {
 894                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 895                         # If the feature is enabled, go straight to the edit page
 896                         if ( $wgGoToEdit ) {
 897                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 898                                 return;
 899                         }
 900                 }
 901
 902                 $wgOut->wrapWikiMsg( "==$1==\n", 'notitlematches' );
 903                 if( $t->quickUserCan( 'create' ) && $t->quickUserCan( 'edit' ) ) {
 904                         $wgOut->addWikiMsg( 'noexactmatch', wfEscapeWikiText( $term ) );
 905                 } else {
 906                         $wgOut->addWikiMsg( 'noexactmatch-nocreate', wfEscapeWikiText( $term ) );
 907                 }
 908
 909                 return $this->showResults( $term );
 910         }
 911
 912         /**
 913          * @param string $term
 914          * @public
 915          */
 916         function showResults( $term ) {
 917                 wfProfileIn( __METHOD__ );
 918                 global $wgOut, $wgUser;
 919                 $sk = $wgUser->getSkin();
 920
 921                 $this->setupPage( $term );
 922
 923                 $wgOut->addWikiMsg( 'searchresulttext' );
 924
 925                 if( '' === trim( $term ) ) {
 926                         // Empty query -- straight view of search form
 927                         $wgOut->setSubtitle( '' );
 928                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 929                         $wgOut->addHTML( $this->powerSearchFocus() );
 930                         wfProfileOut( __METHOD__ );
 931                         return;
 932                 }
 933
 934                 global $wgDisableTextSearch;
 935                 if ( $wgDisableTextSearch ) {
 936                         global $wgSearchForwardUrl;
 937                         if( $wgSearchForwardUrl ) {
 938                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 939                                 $wgOut->redirect( $url );
 940                                 wfProfileOut( __METHOD__ );
 941                                 return;
 942                         }
 943                         global $wgInputEncoding;
 944                         $wgOut->addHTML(
 945                                 Xml::openElement( 'fieldset' ) .
 946                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 947                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 948                                 wfMsg( 'googlesearch',
 949                                         htmlspecialchars( $term ),
 950                                         htmlspecialchars( $wgInputEncoding ),
 951                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 952                                 ) .
 953                                 Xml::closeElement( 'fieldset' )
 954                         );
 955                         wfProfileOut( __METHOD__ );
 956                         return;
 957                 }
 958
 959                 $wgOut->addHTML( $this->shortDialog( $term ) );
 960
 961                 $search = SearchEngine::create();
 962                 $search->setLimitOffset( $this->limit, $this->offset );
 963                 $search->setNamespaces( $this->namespaces );
 964                 $search->showRedirects = $this->searchRedirects;
 965                 $rewritten = $search->replacePrefixes($term);
 966
 967                 $titleMatches = $search->searchTitle( $rewritten );
 968
 969                 // Sometimes the search engine knows there are too many hits
 970                 if ($titleMatches instanceof SearchResultTooMany) {
 971                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 972                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 973                         $wgOut->addHTML( $this->powerSearchFocus() );
 974                         wfProfileOut( __METHOD__ );
 975                         return;
 976                 }
 977
 978                 $textMatches = $search->searchText( $rewritten );
 979
 980                 // did you mean... suggestions
 981                 if($textMatches && $textMatches->hasSuggestion()){
 982                         $st = SpecialPage::getTitleFor( 'Search' );
 983                         $stParams = wfArrayToCGI( array(
 984                                         'search'        => $textMatches->getSuggestionQuery(),
 985                                         'fulltext'      => wfMsg('search')),
 986                                         $this->powerSearchOptions());
 987
 988                         $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
 989                                         $textMatches->getSuggestionSnippet().'</a>';
 990
 991                         $wgOut->addHTML('<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>');
 992                 }
 993
 994                 // show number of results
 995                 $num = ( $titleMatches ? $titleMatches->numRows() : 0 )
 996                         + ( $textMatches ? $textMatches->numRows() : 0);
 997                 $totalNum = 0;
 998                 if($titleMatches && !is_null($titleMatches->getTotalHits()))
 999                         $totalNum += $titleMatches->getTotalHits();
1000                 if($textMatches && !is_null($textMatches->getTotalHits()))
1001                         $totalNum += $textMatches->getTotalHits();
1002                 if ( $num > 0 ) {
1003                         if ( $totalNum > 0 ){
1004                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
1005                                         $this->offset+1, $this->offset+$num, $totalNum, $num );
1006                         } elseif ( $num >= $this->limit ) {
1007                                 $top = wfShowingResults( $this->offset, $this->limit );
1008                         } else {
1009                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $num );
1010                         }
1011                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
1012                 }
1013
1014                 // prev/next links
1015                 if( $num || $this->offset ) {
1016                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
1017                                 SpecialPage::getTitleFor( 'Search' ),
1018                                 wfArrayToCGI(
1019                                         $this->powerSearchOptions(),
1020                                         array( 'search' => $term ) ),
1021                                         ($num < $this->limit) );
1022                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
1023                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
1024                 } else {
1025                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
1026                 }
1027
1028                 if( $titleMatches ) {
1029                         if( $titleMatches->numRows() ) {
1030                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
1031                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
1032                         }
1033                         $titleMatches->free();
1034                 }
1035
1036                 if( $textMatches ) {
1037                         // output appropriate heading
1038                         if( $textMatches->numRows() ) {
1039                                 if($titleMatches)
1040                                         $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
1041                                 else // if no title matches the heading is redundant
1042                                         $wgOut->addHTML("<hr/>");
1043                         } elseif( $num == 0 ) {
1044                                 # Don't show the 'no text matches' if we received title matches
1045                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
1046                         }
1047                         // show interwiki results if any
1048                         if( $textMatches->hasInterwikiResults() )
1049                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ));
1050                         // show results
1051                         if( $textMatches->numRows() )
1052                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
1053
1054                         $textMatches->free();
1055                 }
1056
1057                 if ( $num == 0 ) {
1058                         $wgOut->addWikiMsg( 'nonefound' );
1059                 }
1060                 if( $num || $this->offset ) {
1061                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
1062                 }
1063                 $wgOut->addHTML( $this->powerSearchBox( $term ) );
1064                 wfProfileOut( __METHOD__ );
1065         }
1066
1067         #------------------------------------------------------------------
1068         # Private methods below this line
1069
1070         /**
1071          *
1072          */
1073         function setupPage( $term ) {
1074                 global $wgOut;
1075                 if( !empty( $term ) ){
1076                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
1077                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term) ) );
1078                 }
1079                 $subtitlemsg = ( Title::newFromText( $term ) ? 'searchsubtitle' : 'searchsubtitleinvalid' );
1080                 $wgOut->setSubtitle( $wgOut->parse( wfMsg( $subtitlemsg, wfEscapeWikiText($term) ) ) );
1081                 $wgOut->setArticleRelated( false );
1082                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1083         }
1084
1085         /**
1086          * Extract "power search" namespace settings from the request object,
1087          * returning a list of index numbers to search.
1088          *
1089          * @param WebRequest $request
1090          * @return array
1091          * @private
1092          */
1093         function powerSearch( &$request ) {
1094                 $arr = array();
1095                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1096                         if( $request->getCheck( 'ns' . $ns ) ) {
1097                                 $arr[] = $ns;
1098                         }
1099                 }
1100                 return $arr;
1101         }
1102
1103         /**
1104          * Reconstruct the 'power search' options for links
1105          * @return array
1106          * @private
1107          */
1108         function powerSearchOptions() {
1109                 $opt = array();
1110                 foreach( $this->namespaces as $n ) {
1111                         $opt['ns' . $n] = 1;
1112                 }
1113                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
1114                 return $opt;
1115         }
1116
1117         /**
1118          * Show whole set of results
1119          *
1120          * @param SearchResultSet $matches
1121          */
1122         function showMatches( &$matches ) {
1123                 wfProfileIn( __METHOD__ );
1124
1125                 global $wgContLang;
1126                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1127
1128                 $out = "";
1129
1130                 $infoLine = $matches->getInfo();
1131                 if( !is_null($infoLine) )
1132                         $out .= "\n<!-- {$infoLine} -->\n";
1133
1134
1135                 $off = $this->offset + 1;
1136                 $out .= "<ul class='mw-search-results'>\n";
1137
1138                 while( $result = $matches->next() ) {
1139                         $out .= $this->showHit( $result, $terms );
1140                 }
1141                 $out .= "</ul>\n";
1142
1143                 // convert the whole thing to desired language variant
1144                 global $wgContLang;
1145                 $out = $wgContLang->convert( $out );
1146                 wfProfileOut( __METHOD__ );
1147                 return $out;
1148         }
1149
1150         /**
1151          * Format a single hit result
1152          * @param SearchResult $result
1153          * @param array $terms terms to highlight
1154          */
1155         function showHit( $result, $terms ) {
1156                 wfProfileIn( __METHOD__ );
1157                 global $wgUser, $wgContLang, $wgLang;
1158
1159                 if( $result->isBrokenTitle() ) {
1160                         wfProfileOut( __METHOD__ );
1161                         return "<!-- Broken link in search result -->\n";
1162                 }
1163
1164                 $t = $result->getTitle();
1165                 $sk = $wgUser->getSkin();
1166
1167                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1168
1169                 //If page content is not readable, just return the title.
1170                 //This is not quite safe, but better than showing excerpts from non-readable pages
1171                 //Note that hiding the entry entirely would screw up paging.
1172                 if (!$t->userCanRead()) {
1173                         wfProfileOut( __METHOD__ );
1174                         return "<li>{$link}</li>\n";
1175                 }
1176
1177                 // If the page doesn't *exist*... our search index is out of date.
1178                 // The least confusing at this point is to drop the result.
1179                 // You may get less results, but... oh well. :P
1180                 if( $result->isMissingRevision() ) {
1181                         wfProfileOut( __METHOD__ );
1182                         return "<!-- missing page " .
1183                                 htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
1184                 }
1185
1186                 // format redirects / relevant sections
1187                 $redirectTitle = $result->getRedirectTitle();
1188                 $redirectText = $result->getRedirectSnippet($terms);
1189                 $sectionTitle = $result->getSectionTitle();
1190                 $sectionText = $result->getSectionSnippet($terms);
1191                 $redirect = '';
1192                 if( !is_null($redirectTitle) )
1193                         $redirect = "<span class='searchalttitle'>"
1194                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1195                                 ."</span>";
1196                 $section = '';
1197                 if( !is_null($sectionTitle) )
1198                         $section = "<span class='searchalttitle'>"
1199                                 .wfMsg('search-section', $sk->makeKnownLinkObj( $sectionTitle, $sectionText))
1200                                 ."</span>";
1201
1202                 // format text extract
1203                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
1204
1205                 // format score
1206                 if( is_null( $result->getScore() ) ) {
1207                         // Search engine doesn't report scoring info
1208                         $score = '';
1209                 } else {
1210                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
1211                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
1212                                 . ' - ';
1213                 }
1214
1215                 // format description
1216                 $byteSize = $result->getByteSize();
1217                 $wordCount = $result->getWordCount();
1218                 $timestamp = $result->getTimestamp();
1219                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
1220                         $sk->formatSize( $byteSize ),
1221                         $wordCount );
1222                 $date = $wgLang->timeanddate( $timestamp );
1223
1224                 // link to related articles if supported
1225                 $related = '';
1226                 if( $result->hasRelated() ){
1227                         $st = SpecialPage::getTitleFor( 'Search' );
1228                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
1229                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
1230                                       'fulltext'  => wfMsg('search') ));
1231
1232                         $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'.
1233                                 wfMsg('search-relatedarticle').'</a>';
1234                 }
1235
1236                 // Include a thumbnail for media files...
1237                 if( $t->getNamespace() == NS_FILE ) {
1238                         $img = wfFindFile( $t );
1239                         if( $img ) {
1240                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
1241                                 if( $thumb ) {
1242                                         $desc = $img->getShortDesc();
1243                                         wfProfileOut( __METHOD__ );
1244                                         // Ugly table. :D
1245                                         // Float doesn't seem to interact well with the bullets.
1246                                         // Table messes up vertical alignment of the bullet, but I'm
1247                                         // not sure what more I can do about that. :(
1248                                         return "<li>" .
1249                                                 '<table class="searchResultImage">' .
1250                                                 '<tr>' .
1251                                                 '<td width="120" align="center">' .
1252                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
1253                                                 '</td>' .
1254                                                 '<td valign="top">' .
1255                                                 $link .
1256                                                 $extract .
1257                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
1258                                                 '</td>' .
1259                                                 '</tr>' .
1260                                                 '</table>' .
1261                                                 "</li>\n";
1262                                 }
1263                         }
1264                 }
1265
1266                 wfProfileOut( __METHOD__ );
1267                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
1268                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
1269                         "</li>\n";
1270
1271         }
1272
1273         /**
1274          * Show results from other wikis
1275          *
1276          * @param SearchResultSet $matches
1277          */
1278         function showInterwiki( &$matches, $query ) {
1279                 wfProfileIn( __METHOD__ );
1280
1281                 global $wgContLang;
1282                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1283
1284                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".wfMsg('search-interwiki-caption')."</div>\n";
1285                 $off = $this->offset + 1;
1286                 $out .= "<ul start='{$off}' class='mw-search-iwresults'>\n";
1287
1288                 // work out custom project captions
1289                 $customCaptions = array();
1290                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
1291                 foreach($customLines as $line){
1292                         $parts = explode(":",$line,2);
1293                         if(count($parts) == 2) // validate line
1294                                 $customCaptions[$parts[0]] = $parts[1];
1295                 }
1296
1297
1298                 $prev = null;
1299                 while( $result = $matches->next() ) {
1300                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
1301                         $prev = $result->getInterwikiPrefix();
1302                 }
1303                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
1304                 $out .= "</ul></div>\n";
1305
1306                 // convert the whole thing to desired language variant
1307                 global $wgContLang;
1308                 $out = $wgContLang->convert( $out );
1309                 wfProfileOut( __METHOD__ );
1310                 return $out;
1311         }
1312
1313         /**
1314          * Show single interwiki link
1315          *
1316          * @param SearchResult $result
1317          * @param string $lastInterwiki
1318          * @param array $terms
1319          * @param string $query
1320          * @param array $customCaptions iw prefix -> caption
1321          */
1322         function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
1323                 wfProfileIn( __METHOD__ );
1324                 global $wgUser, $wgContLang, $wgLang;
1325
1326                 if( $result->isBrokenTitle() ) {
1327                         wfProfileOut( __METHOD__ );
1328                         return "<!-- Broken link in search result -->\n";
1329                 }
1330
1331                 $t = $result->getTitle();
1332                 $sk = $wgUser->getSkin();
1333
1334                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1335
1336                 // format redirect if any
1337                 $redirectTitle = $result->getRedirectTitle();
1338                 $redirectText = $result->getRedirectSnippet($terms);
1339                 $redirect = '';
1340                 if( !is_null($redirectTitle) )
1341                         $redirect = "<span class='searchalttitle'>"
1342                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1343                                 ."</span>";
1344
1345                 $out = "";
1346                 // display project name
1347                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()){
1348                         if( key_exists($t->getInterwiki(),$customCaptions) )
1349                                 // captions from 'search-interwiki-custom'
1350                                 $caption = $customCaptions[$t->getInterwiki()];
1351                         else{
1352                                 // default is to show the hostname of the other wiki which might suck
1353                                 // if there are many wikis on one hostname
1354                                 $parsed = parse_url($t->getFullURL());
1355                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
1356                         }
1357                         // "more results" link (special page stuff could be localized, but we might not know target lang)
1358                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
1359                         $searchLink = $sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
1360                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
1361                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>{$searchLink}</span>{$caption}</div>\n<ul>";
1362                 }
1363
1364                 $out .= "<li>{$link} {$redirect}</li>\n";
1365                 wfProfileOut( __METHOD__ );
1366                 return $out;
1367         }
1368
1369
1370         /**
1371          * Generates the power search box at bottom of [[Special:Search]]
1372          * @param $term string: search term
1373          * @return $out string: HTML form
1374          */
1375         function powerSearchBox( $term ) {
1376                 global $wgScript, $wgContLang;
1377
1378                 $namespaces = SearchEngine::searchableNamespaces();
1379
1380                 // group namespaces into rows according to subject; try not to make too
1381                 // many assumptions about namespace numbering
1382                 $rows = array();
1383                 foreach( $namespaces as $ns => $name ) {
1384                         $subj = Namespace::getSubject( $ns );
1385                         if( !array_key_exists( $subj, $rows ) ) {
1386                                 $rows[$subj] = "";
1387                         }
1388                         $name = str_replace( '_', ' ', $name );
1389                         if( '' == $name ) {
1390                                 $name = wfMsg( 'blanknamespace' );
1391                         }
1392                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
1393                                         Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
1394                                         Xml::closeElement( 'td' ) . "\n";
1395                 }
1396                 $rows = array_values( $rows );
1397                 $numRows = count( $rows );
1398
1399                 // lay out namespaces in multiple floating two-column tables so they'll
1400                 // be arranged nicely while still accommodating different screen widths
1401                 $rowsPerTable = 3;  // seems to look nice
1402
1403                 // float to the right on RTL wikis
1404                 $tableStyle = ( $wgContLang->isRTL() ?
1405                                 'float: right; margin: 0 0 1em 1em' :
1406                                 'float: left; margin: 0 1em 1em 0' );
1407
1408                 $tables = "";
1409                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
1410                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
1411                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
1412                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
1413                         }
1414                         $tables .= Xml::closeElement( 'table' ) . "\n";
1415                 }
1416
1417                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
1418                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
1419                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
1420                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' ) ) . "\n";
1421                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1422
1423                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
1424                         Xml::fieldset( wfMsg( 'powersearch-legend' ),
1425                                 Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n" .
1426                                 "<p>" .
1427                                 wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
1428                                 "</p>\n" .
1429                                 $tables .
1430                                 "<hr style=\"clear: both\" />\n" .
1431                                 "<p>" .
1432                                 $redirect . " " . $redirectLabel .
1433                                 "</p>\n" .
1434                                 wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
1435                                 "&nbsp;" .
1436                                 $searchField .
1437                                 "&nbsp;" .
1438                                 $searchButton ) .
1439                         "</form>";
1440
1441                 return $out;
1442         }
1443
1444         function powerSearchFocus() {
1445                 global $wgJsMimeType;
1446                 return "<script type=\"$wgJsMimeType\">" .
1447                         "hookEvent(\"load\", function(){" .
1448                                 "document.getElementById('powerSearchText').focus();" .
1449                         "});" .
1450                         "</script>";
1451         }
1452
1453         function shortDialog($term) {
1454                 global $wgScript;
1455
1456                 $out  = Xml::openElement( 'form', array(
1457                         'id' => 'search',
1458                         'method' => 'get',
1459                         'action' => $wgScript
1460                 ));
1461                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1462                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() );
1463                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . ' ';
1464                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1465                         if( in_array( $ns, $this->namespaces ) ) {
1466                                 $out .= Xml::hidden( "ns{$ns}", '1' );
1467                         }
1468                 }
1469                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
1470                 $out .= Xml::closeElement( 'form' );
1471
1472                 return $out;
1473         }
1474 }