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         }
  76
  77         /**
  78          * If an exact title match can be found, jump straight ahead to it.
  79          * @param string $term
  80          */
  81         public function goResult( $term ) {
  82                 global $wgOut;
  83                 $this->setupPage( $term );
  84                 # Try to go to page as entered.
  85                 $t = Title::newFromText( $term );
  86                 # If the string cannot be used to create a title
  87                 if( is_null( $t ) ) {
  88                         return $this->showResults( $term );
  89                 }
  90                 # If there's an exact or very near match, jump right there.
  91                 $t = SearchEngine::getNearMatch( $term );
  92                 if( !is_null( $t ) ) {
  93                         $wgOut->redirect( $t->getFullURL() );
  94                         return;
  95                 }
  96                 # No match, generate an edit URL
  97                 $t = Title::newFromText( $term );
  98                 if( !is_null( $t ) ) {
  99                         global $wgGoToEdit;
 100                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 101                         # If the feature is enabled, go straight to the edit page
 102                         if( $wgGoToEdit ) {
 103                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 104                                 return;
 105                         }
 106                 }
 107                 return $this->showResults( $term );
 108         }
 109
 110         /**
 111          * @param string $term
 112          */
 113         public function showResults( $term ) {
 114                 global $wgOut, $wgDisableTextSearch, $wgContLang;
 115                 wfProfileIn( __METHOD__ );
 116
 117                 $this->setupPage( $term );
 118                 $this->searchEngine = SearchEngine::create();
 119
 120                 $t = Title::newFromText( $term );
 121
 122                 $wgOut->addHtml(
 123                         Xml::openElement( 'table', array( 'border'=>0, 'cellpadding'=>0, 'cellspacing'=>0 ) ) .
 124                         Xml::openElement( 'tr' ) .
 125                         Xml::openElement( 'td' ) . "\n" .
 126                         ( $this->searchAdvanced ? $this->powerSearchBox( $term ) : $this->shortDialog( $term ) ) .
 127                         Xml::closeElement('td') .
 128                         Xml::closeElement('tr') .
 129                         Xml::closeElement('table')
 130                 );
 131
 132                 $filePrefix = $wgContLang->getFormattedNsText(NS_FILE).':';
 133                 if( '' === trim( $term ) || $filePrefix === trim( $term ) ) {
 134                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 135                         // Empty query -- straight view of search form
 136                         wfProfileOut( __METHOD__ );
 137                         return;
 138                 }
 139
 140                 if( $wgDisableTextSearch ) {
 141                         global $wgSearchForwardUrl;
 142                         if( $wgSearchForwardUrl ) {
 143                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 144                                 $wgOut->redirect( $url );
 145                                 wfProfileOut( __METHOD__ );
 146                                 return;
 147                         }
 148                         global $wgInputEncoding;
 149                         $wgOut->addHTML(
 150                                 Xml::openElement( 'fieldset' ) .
 151                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 152                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 153                                 wfMsg( 'googlesearch',
 154                                         htmlspecialchars( $term ),
 155                                         htmlspecialchars( $wgInputEncoding ),
 156                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 157                                 ) .
 158                                 Xml::closeElement( 'fieldset' )
 159                         );
 160                         wfProfileOut( __METHOD__ );
 161                         return;
 162                 }
 163
 164                 $search =& $this->searchEngine;
 165                 $search->setLimitOffset( $this->limit, $this->offset );
 166                 $search->setNamespaces( $this->namespaces );
 167                 $search->showRedirects = $this->searchRedirects;
 168                 $rewritten = $search->replacePrefixes($term);
 169
 170                 $titleMatches = $search->searchTitle( $rewritten );
 171
 172                 // Sometimes the search engine knows there are too many hits
 173                 if( $titleMatches instanceof SearchResultTooMany ) {
 174                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 175                         wfProfileOut( __METHOD__ );
 176                         return;
 177                 }
 178
 179                 $textMatches = $search->searchText( $rewritten );
 180
 181                 // did you mean... suggestions
 182                 if( $textMatches && $textMatches->hasSuggestion() ) {
 183                         $st = SpecialPage::getTitleFor( 'Search' );
 184                         $stParams = wfArrayToCGI(
 185                                 array( 'search' => $textMatches->getSuggestionQuery(), 'fulltext'       => wfMsg('search') ),
 186                                 $this->powerSearchOptions()
 187                         );
 188                         $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
 189                                 $textMatches->getSuggestionSnippet().'</a>';
 190
 191                         $wgOut->addHTML('<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>');
 192                 }
 193
 194                 // show direct page/create link
 195                 if( !is_null($t) ) {
 196                         if( !$t->exists() ) {
 197                                 $wgOut->addWikiMsg( 'searchmenu-new', wfEscapeWikiText( $t->getPrefixedText() ) );
 198                         } else {
 199                                 $wgOut->addWikiMsg( 'searchmenu-exists', wfEscapeWikiText( $t->getPrefixedText() ) );
 200                         }
 201                 }
 202
 203                 // Get number of results
 204                 $titleMatchesSQL = $titleMatches ? $titleMatches->numRows() : 0;
 205                 $textMatchesSQL = $textMatches ? $textMatches->numRows() : 0;
 206                 // Total initial query matches (possible false positives)
 207                 $numSQL = $titleMatchesSQL + $textMatchesSQL;
 208                 // Get total actual results (after second filtering, if any)
 209                 $numTitleMatches = $titleMatches && !is_null( $titleMatches->getTotalHits() ) ?
 210                         $titleMatches->getTotalHits() : $titleMatchesSQL;
 211                 $numTextMatches = $textMatches && !is_null( $textMatches->getTotalHits() ) ?
 212                         $textMatches->getTotalHits() : $textMatchesSQL;
 213                 $totalRes = $numTitleMatches + $numTextMatches;
 214
 215                 // show number of results and current offset
 216                 if( $numSQL > 0 ) {
 217                         if( $numSQL > 0 ) {
 218                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
 219                                         $this->offset+1, $this->offset+$numSQL, $totalRes, $numSQL );
 220                         } elseif( $numSQL >= $this->limit ) {
 221                                 $top = wfShowingResults( $this->offset, $this->limit );
 222                         } else {
 223                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $numSQL );
 224                         }
 225                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
 226                 }
 227
 228                 // prev/next links
 229                 if( $numSQL || $this->offset ) {
 230                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
 231                                 SpecialPage::getTitleFor( 'Search' ),
 232                                 wfArrayToCGI( $this->powerSearchOptions(), array( 'search' => $term ) ),
 233                                 max( $titleMatchesSQL, $textMatchesSQL ) < $this->limit
 234                         );
 235                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
 236                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 237                 } else {
 238                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 239                 }
 240
 241                 $wgOut->addHtml( "<div class='searchresults'>" );
 242                 if( $titleMatches ) {
 243                         if( $numTitleMatches > 0 ) {
 244                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
 245                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
 246                         }
 247                         $titleMatches->free();
 248                 }
 249                 if( $textMatches ) {
 250                         // output appropriate heading
 251                         if( $numTextMatches > 0 && $numTitleMatches > 0 ) {
 252                                 // if no title matches the heading is redundant
 253                                 $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
 254                         } elseif( $totalRes == 0 ) {
 255                                 # Don't show the 'no text matches' if we received title matches
 256                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
 257                         }
 258                         // show interwiki results if any
 259                         if( $textMatches->hasInterwikiResults() ) {
 260                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
 261                         }
 262                         // show results
 263                         if( $numTextMatches > 0 ) {
 264                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
 265                         }
 266
 267                         $textMatches->free();
 268                 }
 269                 if( $totalRes === 0 ) {
 270                         $wgOut->addWikiMsg( 'search-nonefound' );
 271                 }
 272                 $wgOut->addHtml( "</div>" );
 273                 if( $totalRes === 0 ) {
 274                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 275                 }
 276
 277                 if( $numSQL || $this->offset ) {
 278                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 279                 }
 280                 wfProfileOut( __METHOD__ );
 281         }
 282
 283         /**
 284          *
 285          */
 286         protected function setupPage( $term ) {
 287                 global $wgOut;
 288                 // Figure out the active search profile header
 289                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 290                 if( $this->searchAdvanced )
 291                         $this->active = 'advanced';
 292                 else if( $this->namespaces === NS_FILE || $this->startsWithImage( $term ) )
 293                         $this->active = 'images';
 294                 elseif( $this->namespaces === $nsAllSet )
 295                         $this->active = 'all';
 296                 elseif( $this->namespaces === SearchEngine::defaultNamespaces() )
 297                         $this->active = 'default';
 298                 elseif( $this->namespaces === SearchEngine::projectNamespaces() )
 299                         $this->active = 'project';
 300                 else
 301                         $this->active = 'advanced';
 302                 # Should advanced UI be used?
 303                 $this->searchAdvanced = ($this->active === 'advanced');
 304                 if( !empty( $term ) ) {
 305                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
 306                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term ) ) );
 307                 }
 308                 $wgOut->setArticleRelated( false );
 309                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 310         }
 311
 312         /**
 313          * Extract "power search" namespace settings from the request object,
 314          * returning a list of index numbers to search.
 315          *
 316          * @param WebRequest $request
 317          * @return array
 318          */
 319         protected function powerSearch( &$request ) {
 320                 $arr = array();
 321                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 322                         if( $request->getCheck( 'ns' . $ns ) ) {
 323                                 $arr[] = $ns;
 324                         }
 325                 }
 326                 return $arr;
 327         }
 328
 329         /**
 330          * Reconstruct the 'power search' options for links
 331          * @return array
 332          */
 333         protected function powerSearchOptions() {
 334                 $opt = array();
 335                 foreach( $this->namespaces as $n ) {
 336                         $opt['ns' . $n] = 1;
 337                 }
 338                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 339                 if( $this->searchAdvanced ) {
 340                         $opt['advanced'] = $this->searchAdvanced;
 341                 }
 342                 return $opt;
 343         }
 344
 345         /**
 346          * Show whole set of results
 347          *
 348          * @param SearchResultSet $matches
 349          */
 350         protected function showMatches( &$matches ) {
 351                 global $wgContLang;
 352                 wfProfileIn( __METHOD__ );
 353
 354                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 355
 356                 $out = "";
 357                 $infoLine = $matches->getInfo();
 358                 if( !is_null($infoLine) ) {
 359                         $out .= "\n<!-- {$infoLine} -->\n";
 360                 }
 361                 $off = $this->offset + 1;
 362                 $out .= "<ul class='mw-search-results'>\n";
 363                 while( $result = $matches->next() ) {
 364                         $out .= $this->showHit( $result, $terms );
 365                 }
 366                 $out .= "</ul>\n";
 367
 368                 // convert the whole thing to desired language variant
 369                 $out = $wgContLang->convert( $out );
 370                 wfProfileOut( __METHOD__ );
 371                 return $out;
 372         }
 373
 374         /**
 375          * Format a single hit result
 376          * @param SearchResult $result
 377          * @param array $terms terms to highlight
 378          */
 379         protected function showHit( $result, $terms ) {
 380                 global $wgContLang, $wgLang;
 381                 wfProfileIn( __METHOD__ );
 382
 383                 if( $result->isBrokenTitle() ) {
 384                         wfProfileOut( __METHOD__ );
 385                         return "<!-- Broken link in search result -->\n";
 386                 }
 387
 388                 $t = $result->getTitle();
 389
 390                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 391
 392                 //If page content is not readable, just return the title.
 393                 //This is not quite safe, but better than showing excerpts from non-readable pages
 394                 //Note that hiding the entry entirely would screw up paging.
 395                 if( !$t->userCanRead() ) {
 396                         wfProfileOut( __METHOD__ );
 397                         return "<li>{$link}</li>\n";
 398                 }
 399
 400                 // If the page doesn't *exist*... our search index is out of date.
 401                 // The least confusing at this point is to drop the result.
 402                 // You may get less results, but... oh well. :P
 403                 if( $result->isMissingRevision() ) {
 404                         wfProfileOut( __METHOD__ );
 405                         return "<!-- missing page " . htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
 406                 }
 407
 408                 // format redirects / relevant sections
 409                 $redirectTitle = $result->getRedirectTitle();
 410                 $redirectText = $result->getRedirectSnippet($terms);
 411                 $sectionTitle = $result->getSectionTitle();
 412                 $sectionText = $result->getSectionSnippet($terms);
 413                 $redirect = '';
 414                 if( !is_null($redirectTitle) )
 415                         $redirect = "<span class='searchalttitle'>"
 416                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 417                                 ."</span>";
 418                 $section = '';
 419                 if( !is_null($sectionTitle) )
 420                         $section = "<span class='searchalttitle'>"
 421                                 .wfMsg('search-section', $this->sk->makeKnownLinkObj( $sectionTitle, $sectionText))
 422                                 ."</span>";
 423
 424                 // format text extract
 425                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
 426
 427                 // format score
 428                 if( is_null( $result->getScore() ) ) {
 429                         // Search engine doesn't report scoring info
 430                         $score = '';
 431                 } else {
 432                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 433                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
 434                                 . ' - ';
 435                 }
 436
 437                 // format description
 438                 $byteSize = $result->getByteSize();
 439                 $wordCount = $result->getWordCount();
 440                 $timestamp = $result->getTimestamp();
 441                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
 442                         $this->sk->formatSize( $byteSize ), $wordCount );
 443                 $date = $wgLang->timeanddate( $timestamp );
 444
 445                 // link to related articles if supported
 446                 $related = '';
 447                 if( $result->hasRelated() ) {
 448                         $st = SpecialPage::getTitleFor( 'Search' );
 449                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
 450                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
 451                                       'fulltext'  => wfMsg('search') ));
 452
 453                         $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'.
 454                                 wfMsg('search-relatedarticle').'</a>';
 455                 }
 456
 457                 // Include a thumbnail for media files...
 458                 if( $t->getNamespace() == NS_FILE ) {
 459                         $img = wfFindFile( $t );
 460                         if( $img ) {
 461                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 462                                 if( $thumb ) {
 463                                         $desc = $img->getShortDesc();
 464                                         wfProfileOut( __METHOD__ );
 465                                         // Float doesn't seem to interact well with the bullets.
 466                                         // Table messes up vertical alignment of the bullets.
 467                                         // Bullets are therefore disabled (didn't look great anyway).
 468                                         return "<li>" .
 469                                                 '<table class="searchResultImage">' .
 470                                                 '<tr>' .
 471                                                 '<td width="120" align="center" valign="top">' .
 472                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 473                                                 '</td>' .
 474                                                 '<td valign="top">' .
 475                                                 $link .
 476                                                 $extract .
 477                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 478                                                 '</td>' .
 479                                                 '</tr>' .
 480                                                 '</table>' .
 481                                                 "</li>\n";
 482                                 }
 483                         }
 484                 }
 485
 486                 wfProfileOut( __METHOD__ );
 487                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
 488                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 489                         "</li>\n";
 490
 491         }
 492
 493         /**
 494          * Show results from other wikis
 495          *
 496          * @param SearchResultSet $matches
 497          */
 498         protected function showInterwiki( &$matches, $query ) {
 499                 global $wgContLang;
 500                 wfProfileIn( __METHOD__ );
 501                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 502
 503                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".
 504                         wfMsg('search-interwiki-caption')."</div>\n";
 505                 $off = $this->offset + 1;
 506                 $out .= "<ul start='{$off}' class='mw-search-iwresults'>\n";
 507
 508                 // work out custom project captions
 509                 $customCaptions = array();
 510                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
 511                 foreach($customLines as $line) {
 512                         $parts = explode(":",$line,2);
 513                         if(count($parts) == 2) // validate line
 514                                 $customCaptions[$parts[0]] = $parts[1];
 515                 }
 516
 517                 $prev = null;
 518                 while( $result = $matches->next() ) {
 519                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
 520                         $prev = $result->getInterwikiPrefix();
 521                 }
 522                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 523                 $out .= "</ul></div>\n";
 524
 525                 // convert the whole thing to desired language variant
 526                 $out = $wgContLang->convert( $out );
 527                 wfProfileOut( __METHOD__ );
 528                 return $out;
 529         }
 530
 531         /**
 532          * Show single interwiki link
 533          *
 534          * @param SearchResult $result
 535          * @param string $lastInterwiki
 536          * @param array $terms
 537          * @param string $query
 538          * @param array $customCaptions iw prefix -> caption
 539          */
 540         protected function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
 541                 wfProfileIn( __METHOD__ );
 542                 global $wgContLang, $wgLang;
 543
 544                 if( $result->isBrokenTitle() ) {
 545                         wfProfileOut( __METHOD__ );
 546                         return "<!-- Broken link in search result -->\n";
 547                 }
 548
 549                 $t = $result->getTitle();
 550
 551                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 552
 553                 // format redirect if any
 554                 $redirectTitle = $result->getRedirectTitle();
 555                 $redirectText = $result->getRedirectSnippet($terms);
 556                 $redirect = '';
 557                 if( !is_null($redirectTitle) )
 558                         $redirect = "<span class='searchalttitle'>"
 559                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 560                                 ."</span>";
 561
 562                 $out = "";
 563                 // display project name
 564                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()) {
 565                         if( key_exists($t->getInterwiki(),$customCaptions) )
 566                                 // captions from 'search-interwiki-custom'
 567                                 $caption = $customCaptions[$t->getInterwiki()];
 568                         else{
 569                                 // default is to show the hostname of the other wiki which might suck
 570                                 // if there are many wikis on one hostname
 571                                 $parsed = parse_url($t->getFullURL());
 572                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
 573                         }
 574                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 575                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
 576                         $searchLink = $this->sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
 577                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
 578                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
 579                                 {$searchLink}</span>{$caption}</div>\n<ul>";
 580                 }
 581
 582                 $out .= "<li>{$link} {$redirect}</li>\n";
 583                 wfProfileOut( __METHOD__ );
 584                 return $out;
 585         }
 586
 587
 588         /**
 589          * Generates the power search box at bottom of [[Special:Search]]
 590          * @param $term string: search term
 591          * @return $out string: HTML form
 592          */
 593         protected function powerSearchBox( $term ) {
 594                 global $wgScript;
 595
 596                 $namespaces = SearchEngine::searchableNamespaces();
 597
 598                 $tables = $this->namespaceTables( $namespaces );
 599
 600                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
 601                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
 602                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
 603                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' ) ) . "\n";
 604                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 605
 606                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
 607                         Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n" .
 608                         "<p>" .
 609                         wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
 610                         "</p>\n" .
 611                         $tables .
 612                         "<hr style=\"clear: both\" />\n" .
 613                         "<p>" .
 614                         $redirect . " " . $redirectLabel .
 615                         "</p>\n" .
 616                         wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
 617                         "&nbsp;" .
 618                         $searchField .
 619                         "&nbsp;" .
 620                         $searchButton .
 621                         "</form>";
 622                 $t = Title::newFromText( $term );
 623                 if( $t != null && count($this->namespaces) === 1 ) {
 624                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 625                 }
 626                 return Xml::openElement( 'fieldset', array('id' => 'mw-searchoptions','style' => 'margin:0em;') ) .
 627                         Xml::element( 'legend', null, wfMsg('powersearch-legend') ) .
 628                         $this->formHeader($term) . $out .
 629                         Xml::closeElement( 'fieldset' );
 630         }
 631
 632         protected function searchFocus() {
 633                 global $wgJsMimeType;
 634                 return "<script type=\"$wgJsMimeType\">" .
 635                         "hookEvent(\"load\", function() {" .
 636                                 "document.getElementById('searchText').focus();" .
 637                         "});" .
 638                         "</script>";
 639         }
 640
 641         protected function powerSearchFocus() {
 642                 global $wgJsMimeType;
 643                 return "<script type=\"$wgJsMimeType\">" .
 644                         "hookEvent(\"load\", function() {" .
 645                                 "document.getElementById('powerSearchText').focus();" .
 646                         "});" .
 647                         "</script>";
 648         }
 649
 650         protected function formHeader( $term ) {
 651                 global $wgContLang, $wgCanonicalNamespaceNames;
 652
 653                 $sep = '&nbsp;&nbsp;&nbsp;';
 654                 $out = Xml::openElement('div', array( 'style' => 'padding-bottom:0.5em;' ) );
 655
 656                 $bareterm = $term;
 657                 if( $this->startsWithImage( $term ) )
 658                         $bareterm = substr( $term, strpos( $term, ':' ) + 1 ); // delete all/image prefix
 659
 660                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 661
 662                 // search profiles headers
 663                 $m = wfMsg( 'searchprofile-articles' );
 664                 $tt = wfMsg( 'searchprofile-articles-tooltip',
 665                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::defaultNamespaces() ) ) );
 666                 if( $this->active == 'default' ) {
 667                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 668                 } else {
 669                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::defaultNamespaces(), $m, $tt );
 670                 }
 671                 $out .= $sep;
 672
 673                 $m = wfMsg( 'searchprofile-images' );
 674                 $tt = wfMsg( 'searchprofile-images-tooltip' );
 675                 if( $this->active == 'images' ) {
 676                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 677                 } else {
 678                         $imageTextForm = $wgContLang->getFormattedNsText(NS_FILE).':'.$bareterm;
 679                         $out .= $this->makeSearchLink( $imageTextForm, array( NS_FILE ) , $m, $tt );
 680                 }
 681                 $out .= $sep;
 682
 683                 /*
 684                 $m = wfMsg( 'searchprofile-articles-and-proj' );
 685                 $tt = wfMsg( 'searchprofile-project-tooltip',
 686                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::defaultAndProjectNamespaces() ) ) );
 687                 if( $this->active == 'withproject' ) {
 688                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 689                 } else {
 690                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::defaultAndProjectNamespaces(), $m, $tt );
 691                 }
 692                 $out .= $sep;
 693                 */
 694
 695                 $m = wfMsg( 'searchprofile-project' );
 696                 $tt = wfMsg( 'searchprofile-project-tooltip',
 697                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::projectNamespaces() ) ) );
 698                 if( $this->active == 'project' ) {
 699                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 700                 } else {
 701                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::projectNamespaces(), $m, $tt );
 702                 }
 703                 $out .= $sep;
 704
 705                 $m = wfMsg( 'searchprofile-everything' );
 706                 $tt = wfMsg( 'searchprofile-everything-tooltip' );
 707                 if( $this->active == 'all' ) {
 708                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 709                 } else {
 710                         $out .= $this->makeSearchLink( $bareterm, $nsAllSet, $m, $tt );
 711                 }
 712                 $out .= $sep;
 713
 714                 $m = wfMsg( 'searchprofile-advanced' );
 715                 $tt = wfMsg( 'searchprofile-advanced-tooltip' );
 716                 if( $this->active == 'advanced' ) {
 717                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 718                 } else {
 719                         $out .= $this->makeSearchLink( $bareterm, $this->namespaces, $m, $tt, array( 'advanced' => '1' ) );
 720                 }
 721                 $out .= Xml::closeElement('div') ;
 722
 723                 return $out;
 724         }
 725
 726         protected function shortDialog( $term ) {
 727                 global $wgScript;
 728                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 729                 $searchable = SearchEngine::searchableNamespaces();
 730                 $out = Xml::openElement( 'form', array( 'id' => 'search', 'method' => 'get', 'action' => $wgScript ) );
 731                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n";
 732                 // If searching several, but not all namespaces, show what we are searching.
 733                 if( count($this->namespaces) > 1 && $this->namespaces !== array_keys($searchable) ) {
 734                         $active = array();
 735                         foreach( $this->namespaces as $ns ) {
 736                                 $active[$ns] = $searchable[$ns];
 737                         }
 738                         $out .= wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) . "<br/>\n";
 739                         $out .= $this->namespaceTables( $active, 1 )."<br/>\n";
 740                 // Still keep namespace settings otherwise, but don't show them
 741                 } else {
 742                         foreach( $this->namespaces as $ns ) {
 743                                 $out .= Xml::hidden( "ns{$ns}", '1' );
 744                         }
 745                 }
 746                 // Keep redirect setting
 747                 $out .= Xml::hidden( "redirs", (int)$this->searchRedirects );
 748                 // Term box
 749                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . "\n";
 750                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
 751                 $out .= ' (' . wfMsgExt('searchmenu-help',array('parseinline') ) . ')';
 752                 $out .= Xml::closeElement( 'form' );
 753                 // Add prefix link for single-namespace searches
 754                 $t = Title::newFromText( $term );
 755                 if( $t != null && count($this->namespaces) === 1 ) {
 756                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 757                 }
 758                 return Xml::openElement( 'fieldset', array('id' => 'mw-searchoptions','style' => 'margin:0em;') ) .
 759                         Xml::element( 'legend', null, wfMsg('searchmenu-legend') ) .
 760                         $this->formHeader($term) . $out .
 761                         Xml::closeElement( 'fieldset' );
 762         }
 763
 764         /** Make a search link with some target namespaces */
 765         protected function makeSearchLink( $term, $namespaces, $label, $tooltip, $params=array() ) {
 766                 $opt = $params;
 767                 foreach( $namespaces as $n ) {
 768                         $opt['ns' . $n] = 1;
 769                 }
 770                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 771
 772                 $st = SpecialPage::getTitleFor( 'Search' );
 773                 $stParams = wfArrayToCGI( array( 'search' => $term, 'fulltext' => wfMsg( 'search' ) ), $opt );
 774
 775                 return Xml::element( 'a',
 776                         array( 'href'=> $st->getLocalURL( $stParams ), 'title' => $tooltip ),
 777                         $label );
 778         }
 779
 780         /** Check if query starts with image: prefix */
 781         protected function startsWithImage( $term ) {
 782                 global $wgContLang;
 783
 784                 $p = explode( ':', $term );
 785                 if( count( $p ) > 1 ) {
 786                         return $wgContLang->getNsIndex( $p[0] ) == NS_FILE;
 787                 }
 788                 return false;
 789         }
 790
 791         protected function namespaceTables( $namespaces, $rowsPerTable = 3 ) {
 792                 global $wgContLang;
 793                 // Group namespaces into rows according to subject.
 794                 // Try not to make too many assumptions about namespace numbering.
 795                 $rows = array();
 796                 $tables = "";
 797                 foreach( $namespaces as $ns => $name ) {
 798                         $subj = Namespace::getSubject( $ns );
 799                         if( !array_key_exists( $subj, $rows ) ) {
 800                                 $rows[$subj] = "";
 801                         }
 802                         $name = str_replace( '_', ' ', $name );
 803                         if( '' == $name ) {
 804                                 $name = wfMsg( 'blanknamespace' );
 805                         }
 806                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
 807                                 Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
 808                                 Xml::closeElement( 'td' ) . "\n";
 809                 }
 810                 $rows = array_values( $rows );
 811                 $numRows = count( $rows );
 812                 // Lay out namespaces in multiple floating two-column tables so they'll
 813                 // be arranged nicely while still accommodating different screen widths
 814                 // Float to the right on RTL wikis
 815                 $tableStyle = $wgContLang->isRTL() ?
 816                         'float: right; margin: 0 0 0em 1em' : 'float: left; margin: 0 1em 0em 0';
 817                 // Build the final HTML table...
 818                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
 819                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
 820                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
 821                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
 822                         }
 823                         $tables .= Xml::closeElement( 'table' ) . "\n";
 824                 }
 825                 return $tables;
 826         }
 827 }
 828
 829 /**
 830  * implements Special:Search - Run text & title search and display the output
 831  * @ingroup SpecialPage
 832  */
 833 class SpecialSearchOld {
 834
 835         /**
 836          * Set up basic search parameters from the request and user settings.
 837          * Typically you'll pass $wgRequest and $wgUser.
 838          *
 839          * @param WebRequest $request
 840          * @param User $user
 841          * @public
 842          */
 843         function __construct( &$request, &$user ) {
 844                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
 845
 846                 $this->namespaces = $this->powerSearch( $request );
 847                 if( empty( $this->namespaces ) ) {
 848                         $this->namespaces = SearchEngine::userNamespaces( $user );
 849                 }
 850
 851                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
 852         }
 853
 854         /**
 855          * If an exact title match can be found, jump straight ahead to it.
 856          * @param string $term
 857          * @public
 858          */
 859         function goResult( $term ) {
 860                 global $wgOut;
 861                 global $wgGoToEdit;
 862
 863                 $this->setupPage( $term );
 864
 865                 # Try to go to page as entered.
 866                 $t = Title::newFromText( $term );
 867
 868                 # If the string cannot be used to create a title
 869                 if( is_null( $t ) ){
 870                         return $this->showResults( $term );
 871                 }
 872
 873                 # If there's an exact or very near match, jump right there.
 874                 $t = SearchEngine::getNearMatch( $term );
 875                 if( !is_null( $t ) ) {
 876                         $wgOut->redirect( $t->getFullURL() );
 877                         return;
 878                 }
 879
 880                 # No match, generate an edit URL
 881                 $t = Title::newFromText( $term );
 882                 if( ! is_null( $t ) ) {
 883                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 884                         # If the feature is enabled, go straight to the edit page
 885                         if ( $wgGoToEdit ) {
 886                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 887                                 return;
 888                         }
 889                 }
 890
 891                 $wgOut->wrapWikiMsg( "==$1==\n", 'notitlematches' );
 892                 if( $t->quickUserCan( 'create' ) && $t->quickUserCan( 'edit' ) ) {
 893                         $wgOut->addWikiMsg( 'noexactmatch', wfEscapeWikiText( $term ) );
 894                 } else {
 895                         $wgOut->addWikiMsg( 'noexactmatch-nocreate', wfEscapeWikiText( $term ) );
 896                 }
 897
 898                 return $this->showResults( $term );
 899         }
 900
 901         /**
 902          * @param string $term
 903          * @public
 904          */
 905         function showResults( $term ) {
 906                 wfProfileIn( __METHOD__ );
 907                 global $wgOut, $wgUser;
 908                 $sk = $wgUser->getSkin();
 909
 910                 $this->setupPage( $term );
 911
 912                 $wgOut->addWikiMsg( 'searchresulttext' );
 913
 914                 if( '' === trim( $term ) ) {
 915                         // Empty query -- straight view of search form
 916                         $wgOut->setSubtitle( '' );
 917                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 918                         $wgOut->addHTML( $this->powerSearchFocus() );
 919                         wfProfileOut( __METHOD__ );
 920                         return;
 921                 }
 922
 923                 global $wgDisableTextSearch;
 924                 if ( $wgDisableTextSearch ) {
 925                         global $wgSearchForwardUrl;
 926                         if( $wgSearchForwardUrl ) {
 927                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 928                                 $wgOut->redirect( $url );
 929                                 wfProfileOut( __METHOD__ );
 930                                 return;
 931                         }
 932                         global $wgInputEncoding;
 933                         $wgOut->addHTML(
 934                                 Xml::openElement( 'fieldset' ) .
 935                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 936                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 937                                 wfMsg( 'googlesearch',
 938                                         htmlspecialchars( $term ),
 939                                         htmlspecialchars( $wgInputEncoding ),
 940                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 941                                 ) .
 942                                 Xml::closeElement( 'fieldset' )
 943                         );
 944                         wfProfileOut( __METHOD__ );
 945                         return;
 946                 }
 947
 948                 $wgOut->addHTML( $this->shortDialog( $term ) );
 949
 950                 $search = SearchEngine::create();
 951                 $search->setLimitOffset( $this->limit, $this->offset );
 952                 $search->setNamespaces( $this->namespaces );
 953                 $search->showRedirects = $this->searchRedirects;
 954                 $rewritten = $search->replacePrefixes($term);
 955
 956                 $titleMatches = $search->searchTitle( $rewritten );
 957
 958                 // Sometimes the search engine knows there are too many hits
 959                 if ($titleMatches instanceof SearchResultTooMany) {
 960                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 961                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 962                         $wgOut->addHTML( $this->powerSearchFocus() );
 963                         wfProfileOut( __METHOD__ );
 964                         return;
 965                 }
 966
 967                 $textMatches = $search->searchText( $rewritten );
 968
 969                 // did you mean... suggestions
 970                 if($textMatches && $textMatches->hasSuggestion()){
 971                         $st = SpecialPage::getTitleFor( 'Search' );
 972                         $stParams = wfArrayToCGI( array(
 973                                         'search'        => $textMatches->getSuggestionQuery(),
 974                                         'fulltext'      => wfMsg('search')),
 975                                         $this->powerSearchOptions());
 976
 977                         $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
 978                                         $textMatches->getSuggestionSnippet().'</a>';
 979
 980                         $wgOut->addHTML('<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>');
 981                 }
 982
 983                 // show number of results
 984                 $num = ( $titleMatches ? $titleMatches->numRows() : 0 )
 985                         + ( $textMatches ? $textMatches->numRows() : 0);
 986                 $totalNum = 0;
 987                 if($titleMatches && !is_null($titleMatches->getTotalHits()))
 988                         $totalNum += $titleMatches->getTotalHits();
 989                 if($textMatches && !is_null($textMatches->getTotalHits()))
 990                         $totalNum += $textMatches->getTotalHits();
 991                 if ( $num > 0 ) {
 992                         if ( $totalNum > 0 ){
 993                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
 994                                         $this->offset+1, $this->offset+$num, $totalNum, $num );
 995                         } elseif ( $num >= $this->limit ) {
 996                                 $top = wfShowingResults( $this->offset, $this->limit );
 997                         } else {
 998                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $num );
 999                         }
1000                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
1001                 }
1002
1003                 // prev/next links
1004                 if( $num || $this->offset ) {
1005                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
1006                                 SpecialPage::getTitleFor( 'Search' ),
1007                                 wfArrayToCGI(
1008                                         $this->powerSearchOptions(),
1009                                         array( 'search' => $term ) ),
1010                                         ($num < $this->limit) );
1011                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
1012                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
1013                 } else {
1014                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
1015                 }
1016
1017                 if( $titleMatches ) {
1018                         if( $titleMatches->numRows() ) {
1019                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
1020                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
1021                         }
1022                         $titleMatches->free();
1023                 }
1024
1025                 if( $textMatches ) {
1026                         // output appropriate heading
1027                         if( $textMatches->numRows() ) {
1028                                 if($titleMatches)
1029                                         $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
1030                                 else // if no title matches the heading is redundant
1031                                         $wgOut->addHTML("<hr/>");
1032                         } elseif( $num == 0 ) {
1033                                 # Don't show the 'no text matches' if we received title matches
1034                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
1035                         }
1036                         // show interwiki results if any
1037                         if( $textMatches->hasInterwikiResults() )
1038                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ));
1039                         // show results
1040                         if( $textMatches->numRows() )
1041                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
1042
1043                         $textMatches->free();
1044                 }
1045
1046                 if ( $num == 0 ) {
1047                         $wgOut->addWikiMsg( 'nonefound' );
1048                 }
1049                 if( $num || $this->offset ) {
1050                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
1051                 }
1052                 $wgOut->addHTML( $this->powerSearchBox( $term ) );
1053                 wfProfileOut( __METHOD__ );
1054         }
1055
1056         #------------------------------------------------------------------
1057         # Private methods below this line
1058
1059         /**
1060          *
1061          */
1062         function setupPage( $term ) {
1063                 global $wgOut;
1064                 if( !empty( $term ) ){
1065                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
1066                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term) ) );
1067                 }
1068                 $subtitlemsg = ( Title::newFromText( $term ) ? 'searchsubtitle' : 'searchsubtitleinvalid' );
1069                 $wgOut->setSubtitle( $wgOut->parse( wfMsg( $subtitlemsg, wfEscapeWikiText($term) ) ) );
1070                 $wgOut->setArticleRelated( false );
1071                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1072         }
1073
1074         /**
1075          * Extract "power search" namespace settings from the request object,
1076          * returning a list of index numbers to search.
1077          *
1078          * @param WebRequest $request
1079          * @return array
1080          * @private
1081          */
1082         function powerSearch( &$request ) {
1083                 $arr = array();
1084                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1085                         if( $request->getCheck( 'ns' . $ns ) ) {
1086                                 $arr[] = $ns;
1087                         }
1088                 }
1089                 return $arr;
1090         }
1091
1092         /**
1093          * Reconstruct the 'power search' options for links
1094          * @return array
1095          * @private
1096          */
1097         function powerSearchOptions() {
1098                 $opt = array();
1099                 foreach( $this->namespaces as $n ) {
1100                         $opt['ns' . $n] = 1;
1101                 }
1102                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
1103                 return $opt;
1104         }
1105
1106         /**
1107          * Show whole set of results
1108          *
1109          * @param SearchResultSet $matches
1110          */
1111         function showMatches( &$matches ) {
1112                 wfProfileIn( __METHOD__ );
1113
1114                 global $wgContLang;
1115                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1116
1117                 $out = "";
1118
1119                 $infoLine = $matches->getInfo();
1120                 if( !is_null($infoLine) )
1121                         $out .= "\n<!-- {$infoLine} -->\n";
1122
1123
1124                 $off = $this->offset + 1;
1125                 $out .= "<ul class='mw-search-results'>\n";
1126
1127                 while( $result = $matches->next() ) {
1128                         $out .= $this->showHit( $result, $terms );
1129                 }
1130                 $out .= "</ul>\n";
1131
1132                 // convert the whole thing to desired language variant
1133                 global $wgContLang;
1134                 $out = $wgContLang->convert( $out );
1135                 wfProfileOut( __METHOD__ );
1136                 return $out;
1137         }
1138
1139         /**
1140          * Format a single hit result
1141          * @param SearchResult $result
1142          * @param array $terms terms to highlight
1143          */
1144         function showHit( $result, $terms ) {
1145                 wfProfileIn( __METHOD__ );
1146                 global $wgUser, $wgContLang, $wgLang;
1147
1148                 if( $result->isBrokenTitle() ) {
1149                         wfProfileOut( __METHOD__ );
1150                         return "<!-- Broken link in search result -->\n";
1151                 }
1152
1153                 $t = $result->getTitle();
1154                 $sk = $wgUser->getSkin();
1155
1156                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1157
1158                 //If page content is not readable, just return the title.
1159                 //This is not quite safe, but better than showing excerpts from non-readable pages
1160                 //Note that hiding the entry entirely would screw up paging.
1161                 if (!$t->userCanRead()) {
1162                         wfProfileOut( __METHOD__ );
1163                         return "<li>{$link}</li>\n";
1164                 }
1165
1166                 // If the page doesn't *exist*... our search index is out of date.
1167                 // The least confusing at this point is to drop the result.
1168                 // You may get less results, but... oh well. :P
1169                 if( $result->isMissingRevision() ) {
1170                         wfProfileOut( __METHOD__ );
1171                         return "<!-- missing page " .
1172                                 htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
1173                 }
1174
1175                 // format redirects / relevant sections
1176                 $redirectTitle = $result->getRedirectTitle();
1177                 $redirectText = $result->getRedirectSnippet($terms);
1178                 $sectionTitle = $result->getSectionTitle();
1179                 $sectionText = $result->getSectionSnippet($terms);
1180                 $redirect = '';
1181                 if( !is_null($redirectTitle) )
1182                         $redirect = "<span class='searchalttitle'>"
1183                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1184                                 ."</span>";
1185                 $section = '';
1186                 if( !is_null($sectionTitle) )
1187                         $section = "<span class='searchalttitle'>"
1188                                 .wfMsg('search-section', $sk->makeKnownLinkObj( $sectionTitle, $sectionText))
1189                                 ."</span>";
1190
1191                 // format text extract
1192                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
1193
1194                 // format score
1195                 if( is_null( $result->getScore() ) ) {
1196                         // Search engine doesn't report scoring info
1197                         $score = '';
1198                 } else {
1199                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
1200                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
1201                                 . ' - ';
1202                 }
1203
1204                 // format description
1205                 $byteSize = $result->getByteSize();
1206                 $wordCount = $result->getWordCount();
1207                 $timestamp = $result->getTimestamp();
1208                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
1209                         $sk->formatSize( $byteSize ),
1210                         $wordCount );
1211                 $date = $wgLang->timeanddate( $timestamp );
1212
1213                 // link to related articles if supported
1214                 $related = '';
1215                 if( $result->hasRelated() ){
1216                         $st = SpecialPage::getTitleFor( 'Search' );
1217                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
1218                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
1219                                       'fulltext'  => wfMsg('search') ));
1220
1221                         $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'.
1222                                 wfMsg('search-relatedarticle').'</a>';
1223                 }
1224
1225                 // Include a thumbnail for media files...
1226                 if( $t->getNamespace() == NS_FILE ) {
1227                         $img = wfFindFile( $t );
1228                         if( $img ) {
1229                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
1230                                 if( $thumb ) {
1231                                         $desc = $img->getShortDesc();
1232                                         wfProfileOut( __METHOD__ );
1233                                         // Ugly table. :D
1234                                         // Float doesn't seem to interact well with the bullets.
1235                                         // Table messes up vertical alignment of the bullet, but I'm
1236                                         // not sure what more I can do about that. :(
1237                                         return "<li>" .
1238                                                 '<table class="searchResultImage">' .
1239                                                 '<tr>' .
1240                                                 '<td width="120" align="center">' .
1241                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
1242                                                 '</td>' .
1243                                                 '<td valign="top">' .
1244                                                 $link .
1245                                                 $extract .
1246                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
1247                                                 '</td>' .
1248                                                 '</tr>' .
1249                                                 '</table>' .
1250                                                 "</li>\n";
1251                                 }
1252                         }
1253                 }
1254
1255                 wfProfileOut( __METHOD__ );
1256                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
1257                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
1258                         "</li>\n";
1259
1260         }
1261
1262         /**
1263          * Show results from other wikis
1264          *
1265          * @param SearchResultSet $matches
1266          */
1267         function showInterwiki( &$matches, $query ) {
1268                 wfProfileIn( __METHOD__ );
1269
1270                 global $wgContLang;
1271                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1272
1273                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".wfMsg('search-interwiki-caption')."</div>\n";
1274                 $off = $this->offset + 1;
1275                 $out .= "<ul start='{$off}' class='mw-search-iwresults'>\n";
1276
1277                 // work out custom project captions
1278                 $customCaptions = array();
1279                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
1280                 foreach($customLines as $line){
1281                         $parts = explode(":",$line,2);
1282                         if(count($parts) == 2) // validate line
1283                                 $customCaptions[$parts[0]] = $parts[1];
1284                 }
1285
1286
1287                 $prev = null;
1288                 while( $result = $matches->next() ) {
1289                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
1290                         $prev = $result->getInterwikiPrefix();
1291                 }
1292                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
1293                 $out .= "</ul></div>\n";
1294
1295                 // convert the whole thing to desired language variant
1296                 global $wgContLang;
1297                 $out = $wgContLang->convert( $out );
1298                 wfProfileOut( __METHOD__ );
1299                 return $out;
1300         }
1301
1302         /**
1303          * Show single interwiki link
1304          *
1305          * @param SearchResult $result
1306          * @param string $lastInterwiki
1307          * @param array $terms
1308          * @param string $query
1309          * @param array $customCaptions iw prefix -> caption
1310          */
1311         function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
1312                 wfProfileIn( __METHOD__ );
1313                 global $wgUser, $wgContLang, $wgLang;
1314
1315                 if( $result->isBrokenTitle() ) {
1316                         wfProfileOut( __METHOD__ );
1317                         return "<!-- Broken link in search result -->\n";
1318                 }
1319
1320                 $t = $result->getTitle();
1321                 $sk = $wgUser->getSkin();
1322
1323                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1324
1325                 // format redirect if any
1326                 $redirectTitle = $result->getRedirectTitle();
1327                 $redirectText = $result->getRedirectSnippet($terms);
1328                 $redirect = '';
1329                 if( !is_null($redirectTitle) )
1330                         $redirect = "<span class='searchalttitle'>"
1331                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1332                                 ."</span>";
1333
1334                 $out = "";
1335                 // display project name
1336                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()){
1337                         if( key_exists($t->getInterwiki(),$customCaptions) )
1338                                 // captions from 'search-interwiki-custom'
1339                                 $caption = $customCaptions[$t->getInterwiki()];
1340                         else{
1341                                 // default is to show the hostname of the other wiki which might suck
1342                                 // if there are many wikis on one hostname
1343                                 $parsed = parse_url($t->getFullURL());
1344                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
1345                         }
1346                         // "more results" link (special page stuff could be localized, but we might not know target lang)
1347                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
1348                         $searchLink = $sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
1349                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
1350                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>{$searchLink}</span>{$caption}</div>\n<ul>";
1351                 }
1352
1353                 $out .= "<li>{$link} {$redirect}</li>\n";
1354                 wfProfileOut( __METHOD__ );
1355                 return $out;
1356         }
1357
1358
1359         /**
1360          * Generates the power search box at bottom of [[Special:Search]]
1361          * @param $term string: search term
1362          * @return $out string: HTML form
1363          */
1364         function powerSearchBox( $term ) {
1365                 global $wgScript, $wgContLang;
1366
1367                 $namespaces = SearchEngine::searchableNamespaces();
1368
1369                 // group namespaces into rows according to subject; try not to make too
1370                 // many assumptions about namespace numbering
1371                 $rows = array();
1372                 foreach( $namespaces as $ns => $name ) {
1373                         $subj = Namespace::getSubject( $ns );
1374                         if( !array_key_exists( $subj, $rows ) ) {
1375                                 $rows[$subj] = "";
1376                         }
1377                         $name = str_replace( '_', ' ', $name );
1378                         if( '' == $name ) {
1379                                 $name = wfMsg( 'blanknamespace' );
1380                         }
1381                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
1382                                         Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
1383                                         Xml::closeElement( 'td' ) . "\n";
1384                 }
1385                 $rows = array_values( $rows );
1386                 $numRows = count( $rows );
1387
1388                 // lay out namespaces in multiple floating two-column tables so they'll
1389                 // be arranged nicely while still accommodating different screen widths
1390                 $rowsPerTable = 3;  // seems to look nice
1391
1392                 // float to the right on RTL wikis
1393                 $tableStyle = ( $wgContLang->isRTL() ?
1394                                 'float: right; margin: 0 0 1em 1em' :
1395                                 'float: left; margin: 0 1em 1em 0' );
1396
1397                 $tables = "";
1398                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
1399                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
1400                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
1401                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
1402                         }
1403                         $tables .= Xml::closeElement( 'table' ) . "\n";
1404                 }
1405
1406                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
1407                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
1408                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
1409                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' ) ) . "\n";
1410                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1411
1412                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
1413                         Xml::fieldset( wfMsg( 'powersearch-legend' ),
1414                                 Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n" .
1415                                 "<p>" .
1416                                 wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
1417                                 "</p>\n" .
1418                                 $tables .
1419                                 "<hr style=\"clear: both\" />\n" .
1420                                 "<p>" .
1421                                 $redirect . " " . $redirectLabel .
1422                                 "</p>\n" .
1423                                 wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
1424                                 "&nbsp;" .
1425                                 $searchField .
1426                                 "&nbsp;" .
1427                                 $searchButton ) .
1428                         "</form>";
1429
1430                 return $out;
1431         }
1432
1433         function powerSearchFocus() {
1434                 global $wgJsMimeType;
1435                 return "<script type=\"$wgJsMimeType\">" .
1436                         "hookEvent(\"load\", function(){" .
1437                                 "document.getElementById('powerSearchText').focus();" .
1438                         "});" .
1439                         "</script>";
1440         }
1441
1442         function shortDialog($term) {
1443                 global $wgScript;
1444
1445                 $out  = Xml::openElement( 'form', array(
1446                         'id' => 'search',
1447                         'method' => 'get',
1448                         'action' => $wgScript
1449                 ));
1450                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1451                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() );
1452                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . ' ';
1453                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1454                         if( in_array( $ns, $this->namespaces ) ) {
1455                                 $out .= Xml::hidden( "ns{$ns}", '1' );
1456                         }
1457                 }
1458                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
1459                 $out .= Xml::closeElement( 'form' );
1460
1461                 return $out;
1462         }
1463 }