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                 $this->mPrefix = $request->getVal('prefix', '');
  67                 # Extract requested namespaces
  68                 $this->namespaces = $this->powerSearch( $request );
  69                 if( empty( $this->namespaces ) ) {
  70                         $this->namespaces = SearchEngine::userNamespaces( $user );
  71                 }
  72                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
  73                 $this->searchAdvanced = $request->getVal( 'advanced' );
  74                 $this->active = 'advanced';
  75                 $this->sk = $user->getSkin();
  76                 $this->didYouMeanHtml = ''; # html of did you mean... link
  77         }
  78
  79         /**
  80          * If an exact title match can be found, jump straight ahead to it.
  81          * @param string $term
  82          */
  83         public function goResult( $term ) {
  84                 global $wgOut;
  85                 $this->setupPage( $term );
  86                 # Try to go to page as entered.
  87                 $t = Title::newFromText( $term );
  88                 # If the string cannot be used to create a title
  89                 if( is_null( $t ) ) {
  90                         return $this->showResults( $term );
  91                 }
  92                 # If there's an exact or very near match, jump right there.
  93                 $t = SearchEngine::getNearMatch( $term );
  94                 if( !is_null( $t ) ) {
  95                         $wgOut->redirect( $t->getFullURL() );
  96                         return;
  97                 }
  98                 # No match, generate an edit URL
  99                 $t = Title::newFromText( $term );
 100                 if( !is_null( $t ) ) {
 101                         global $wgGoToEdit;
 102                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 103                         # If the feature is enabled, go straight to the edit page
 104                         if( $wgGoToEdit ) {
 105                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 106                                 return;
 107                         }
 108                 }
 109                 return $this->showResults( $term );
 110         }
 111
 112         /**
 113          * @param string $term
 114          */
 115         public function showResults( $term ) {
 116                 global $wgOut, $wgDisableTextSearch, $wgContLang;
 117                 wfProfileIn( __METHOD__ );
 118
 119                 $this->setupPage( $term );
 120                 $this->searchEngine = SearchEngine::create();
 121
 122                 if( $wgDisableTextSearch ) {
 123                         global $wgSearchForwardUrl;
 124                         if( $wgSearchForwardUrl ) {
 125                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 126                                 $wgOut->redirect( $url );
 127                                 wfProfileOut( __METHOD__ );
 128                                 return;
 129                         }
 130                         global $wgInputEncoding;
 131                         $wgOut->addHTML(
 132                                 Xml::openElement( 'fieldset' ) .
 133                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 134                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 135                                 wfMsg( 'googlesearch',
 136                                         htmlspecialchars( $term ),
 137                                         htmlspecialchars( $wgInputEncoding ),
 138                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 139                                 ) .
 140                                 Xml::closeElement( 'fieldset' )
 141                         );
 142                         wfProfileOut( __METHOD__ );
 143                         return;
 144                 }
 145
 146                 $t = Title::newFromText( $term );
 147                 // fetch search results
 148                 $search =& $this->searchEngine;
 149                 $search->setLimitOffset( $this->limit, $this->offset );
 150                 $search->setNamespaces( $this->namespaces );
 151                 $search->showRedirects = $this->searchRedirects;
 152                 $search->prefix = $this->mPrefix;
 153                 $term = $search->transformSearchTerm($term);
 154                 $rewritten = $search->replacePrefixes($term);
 155
 156                 $titleMatches = $search->searchTitle( $rewritten );
 157                 if( !($titleMatches instanceof SearchResultTooMany))
 158                         $textMatches = $search->searchText( $rewritten );
 159
 160                 // did you mean... suggestions
 161                 if( $textMatches && $textMatches->hasSuggestion() ) {
 162                         $st = SpecialPage::getTitleFor( 'Search' );
 163                         $stParams = wfArrayToCGI(
 164                                 array( 'search' => $textMatches->getSuggestionQuery(), 'fulltext'       => wfMsg('search') ),
 165                                 $this->powerSearchOptions()
 166                         );
 167                         $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
 168                                 $textMatches->getSuggestionSnippet().'</a>';
 169
 170                         $this->didYouMeanHtml = '<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>';
 171                 }
 172
 173                 // start rendering the page
 174                 $wgOut->addHtml(
 175                         Xml::openElement( 'table', array( 'border'=>0, 'cellpadding'=>0, 'cellspacing'=>0 ) ) .
 176                         Xml::openElement( 'tr' ) .
 177                         Xml::openElement( 'td' ) . "\n" .
 178                         ( $this->searchAdvanced ? $this->powerSearchBox( $term ) : $this->shortDialog( $term ) ) .
 179                         Xml::closeElement('td') .
 180                         Xml::closeElement('tr') .
 181                         Xml::closeElement('table')
 182                 );
 183
 184                 // Sometimes the search engine knows there are too many hits
 185                 if( $titleMatches instanceof SearchResultTooMany ) {
 186                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 187                         wfProfileOut( __METHOD__ );
 188                         return;
 189                 }
 190
 191                 $filePrefix = $wgContLang->getFormattedNsText(NS_FILE).':';
 192                 if( '' === trim( $term ) || $filePrefix === trim( $term ) ) {
 193                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 194                         // Empty query -- straight view of search form
 195                         wfProfileOut( __METHOD__ );
 196                         return;
 197                 }
 198
 199                 // show direct page/create link
 200                 if( !is_null($t) ) {
 201                         if( !$t->exists() ) {
 202                                 $wgOut->addWikiMsg( 'searchmenu-new', wfEscapeWikiText( $t->getPrefixedText() ) );
 203                         } else {
 204                                 $wgOut->addWikiMsg( 'searchmenu-exists', wfEscapeWikiText( $t->getPrefixedText() ) );
 205                         }
 206                 }
 207
 208                 // Get number of results
 209                 $titleMatchesSQL = $titleMatches ? $titleMatches->numRows() : 0;
 210                 $textMatchesSQL = $textMatches ? $textMatches->numRows() : 0;
 211                 // Total initial query matches (possible false positives)
 212                 $numSQL = $titleMatchesSQL + $textMatchesSQL;
 213                 // Get total actual results (after second filtering, if any)
 214                 $numTitleMatches = $titleMatches && !is_null( $titleMatches->getTotalHits() ) ?
 215                         $titleMatches->getTotalHits() : $titleMatchesSQL;
 216                 $numTextMatches = $textMatches && !is_null( $textMatches->getTotalHits() ) ?
 217                         $textMatches->getTotalHits() : $textMatchesSQL;
 218                 $totalRes = $numTitleMatches + $numTextMatches;
 219
 220                 // show number of results and current offset
 221                 if( $numSQL > 0 ) {
 222                         if( $numSQL > 0 ) {
 223                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
 224                                         $this->offset+1, $this->offset+$numSQL, $totalRes, $numSQL );
 225                         } elseif( $numSQL >= $this->limit ) {
 226                                 $top = wfShowingResults( $this->offset, $this->limit );
 227                         } else {
 228                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $numSQL );
 229                         }
 230                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
 231                 }
 232
 233                 // prev/next links
 234                 if( $numSQL || $this->offset ) {
 235                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
 236                                 SpecialPage::getTitleFor( 'Search' ),
 237                                 wfArrayToCGI( $this->powerSearchOptions(), array( 'search' => $term ) ),
 238                                 max( $titleMatchesSQL, $textMatchesSQL ) < $this->limit
 239                         );
 240                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
 241                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
 242                 } else {
 243                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
 244                 }
 245
 246                 $wgOut->addHtml( "<div class='searchresults'>" );
 247                 if( $titleMatches ) {
 248                         if( $numTitleMatches > 0 ) {
 249                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
 250                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
 251                         }
 252                         $titleMatches->free();
 253                 }
 254                 if( $textMatches ) {
 255                         // output appropriate heading
 256                         if( $numTextMatches > 0 && $numTitleMatches > 0 ) {
 257                                 // if no title matches the heading is redundant
 258                                 $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
 259                         } elseif( $totalRes == 0 ) {
 260                                 # Don't show the 'no text matches' if we received title matches
 261                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
 262                         }
 263                         // show interwiki results if any
 264                         if( $textMatches->hasInterwikiResults() ) {
 265                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ) );
 266                         }
 267                         // show results
 268                         if( $numTextMatches > 0 ) {
 269                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
 270                         }
 271
 272                         $textMatches->free();
 273                 }
 274                 if( $totalRes === 0 ) {
 275                         $wgOut->addWikiMsg( 'search-nonefound' );
 276                 }
 277                 $wgOut->addHtml( "</div>" );
 278                 if( $totalRes === 0 ) {
 279                         $wgOut->addHTML( $this->searchAdvanced ? $this->powerSearchFocus() : $this->searchFocus() );
 280                 }
 281
 282                 if( $numSQL || $this->offset ) {
 283                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
 284                 }
 285                 wfProfileOut( __METHOD__ );
 286         }
 287
 288         /**
 289          *
 290          */
 291         protected function setupPage( $term ) {
 292                 global $wgOut;
 293                 // Figure out the active search profile header
 294                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 295                 if( $this->searchAdvanced )
 296                         $this->active = 'advanced';
 297                 else if( $this->namespaces === NS_FILE || $this->startsWithImage( $term ) )
 298                         $this->active = 'images';
 299                 elseif( $this->namespaces === $nsAllSet )
 300                         $this->active = 'all';
 301                 elseif( $this->namespaces === SearchEngine::defaultNamespaces() )
 302                         $this->active = 'default';
 303                 elseif( $this->namespaces === SearchEngine::projectNamespaces() )
 304                         $this->active = 'project';
 305                 else
 306                         $this->active = 'advanced';
 307                 # Should advanced UI be used?
 308                 $this->searchAdvanced = ($this->active === 'advanced');
 309                 if( !empty( $term ) ) {
 310                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
 311                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term ) ) );
 312                 }
 313                 $wgOut->setArticleRelated( false );
 314                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
 315         }
 316
 317         /**
 318          * Extract "power search" namespace settings from the request object,
 319          * returning a list of index numbers to search.
 320          *
 321          * @param WebRequest $request
 322          * @return array
 323          */
 324         protected function powerSearch( &$request ) {
 325                 $arr = array();
 326                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
 327                         if( $request->getCheck( 'ns' . $ns ) ) {
 328                                 $arr[] = $ns;
 329                         }
 330                 }
 331                 return $arr;
 332         }
 333
 334         /**
 335          * Reconstruct the 'power search' options for links
 336          * @return array
 337          */
 338         protected function powerSearchOptions() {
 339                 $opt = array();
 340                 foreach( $this->namespaces as $n ) {
 341                         $opt['ns' . $n] = 1;
 342                 }
 343                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 344                 if( $this->searchAdvanced ) {
 345                         $opt['advanced'] = $this->searchAdvanced;
 346                 }
 347                 return $opt;
 348         }
 349
 350         /**
 351          * Show whole set of results
 352          *
 353          * @param SearchResultSet $matches
 354          */
 355         protected function showMatches( &$matches ) {
 356                 global $wgContLang;
 357                 wfProfileIn( __METHOD__ );
 358
 359                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 360
 361                 $out = "";
 362                 $infoLine = $matches->getInfo();
 363                 if( !is_null($infoLine) ) {
 364                         $out .= "\n<!-- {$infoLine} -->\n";
 365                 }
 366                 $off = $this->offset + 1;
 367                 $out .= "<ul class='mw-search-results'>\n";
 368                 while( $result = $matches->next() ) {
 369                         $out .= $this->showHit( $result, $terms );
 370                 }
 371                 $out .= "</ul>\n";
 372
 373                 // convert the whole thing to desired language variant
 374                 $out = $wgContLang->convert( $out );
 375                 wfProfileOut( __METHOD__ );
 376                 return $out;
 377         }
 378
 379         /**
 380          * Format a single hit result
 381          * @param SearchResult $result
 382          * @param array $terms terms to highlight
 383          */
 384         protected function showHit( $result, $terms ) {
 385                 global $wgContLang, $wgLang;
 386                 wfProfileIn( __METHOD__ );
 387
 388                 if( $result->isBrokenTitle() ) {
 389                         wfProfileOut( __METHOD__ );
 390                         return "<!-- Broken link in search result -->\n";
 391                 }
 392
 393                 $t = $result->getTitle();
 394
 395                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 396
 397                 //If page content is not readable, just return the title.
 398                 //This is not quite safe, but better than showing excerpts from non-readable pages
 399                 //Note that hiding the entry entirely would screw up paging.
 400                 if( !$t->userCanRead() ) {
 401                         wfProfileOut( __METHOD__ );
 402                         return "<li>{$link}</li>\n";
 403                 }
 404
 405                 // If the page doesn't *exist*... our search index is out of date.
 406                 // The least confusing at this point is to drop the result.
 407                 // You may get less results, but... oh well. :P
 408                 if( $result->isMissingRevision() ) {
 409                         wfProfileOut( __METHOD__ );
 410                         return "<!-- missing page " . htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
 411                 }
 412
 413                 // format redirects / relevant sections
 414                 $redirectTitle = $result->getRedirectTitle();
 415                 $redirectText = $result->getRedirectSnippet($terms);
 416                 $sectionTitle = $result->getSectionTitle();
 417                 $sectionText = $result->getSectionSnippet($terms);
 418                 $redirect = '';
 419                 if( !is_null($redirectTitle) )
 420                         $redirect = "<span class='searchalttitle'>"
 421                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 422                                 ."</span>";
 423                 $section = '';
 424                 if( !is_null($sectionTitle) )
 425                         $section = "<span class='searchalttitle'>"
 426                                 .wfMsg('search-section', $this->sk->makeKnownLinkObj( $sectionTitle, $sectionText))
 427                                 ."</span>";
 428
 429                 // format text extract
 430                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
 431
 432                 // format score
 433                 if( is_null( $result->getScore() ) ) {
 434                         // Search engine doesn't report scoring info
 435                         $score = '';
 436                 } else {
 437                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
 438                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
 439                                 . ' - ';
 440                 }
 441
 442                 // format description
 443                 $byteSize = $result->getByteSize();
 444                 $wordCount = $result->getWordCount();
 445                 $timestamp = $result->getTimestamp();
 446                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
 447                         $this->sk->formatSize( $byteSize ), $wordCount );
 448                 $date = $wgLang->timeanddate( $timestamp );
 449
 450                 // link to related articles if supported
 451                 $related = '';
 452                 if( $result->hasRelated() ) {
 453                         $st = SpecialPage::getTitleFor( 'Search' );
 454                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
 455                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
 456                                       'fulltext'  => wfMsg('search') ));
 457
 458                         $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'.
 459                                 wfMsg('search-relatedarticle').'</a>';
 460                 }
 461
 462                 // Include a thumbnail for media files...
 463                 if( $t->getNamespace() == NS_FILE ) {
 464                         $img = wfFindFile( $t );
 465                         if( $img ) {
 466                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
 467                                 if( $thumb ) {
 468                                         $desc = $img->getShortDesc();
 469                                         wfProfileOut( __METHOD__ );
 470                                         // Float doesn't seem to interact well with the bullets.
 471                                         // Table messes up vertical alignment of the bullets.
 472                                         // Bullets are therefore disabled (didn't look great anyway).
 473                                         return "<li>" .
 474                                                 '<table class="searchResultImage">' .
 475                                                 '<tr>' .
 476                                                 '<td width="120" align="center" valign="top">' .
 477                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
 478                                                 '</td>' .
 479                                                 '<td valign="top">' .
 480                                                 $link .
 481                                                 $extract .
 482                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
 483                                                 '</td>' .
 484                                                 '</tr>' .
 485                                                 '</table>' .
 486                                                 "</li>\n";
 487                                 }
 488                         }
 489                 }
 490
 491                 wfProfileOut( __METHOD__ );
 492                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
 493                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
 494                         "</li>\n";
 495
 496         }
 497
 498         /**
 499          * Show results from other wikis
 500          *
 501          * @param SearchResultSet $matches
 502          */
 503         protected function showInterwiki( &$matches, $query ) {
 504                 global $wgContLang;
 505                 wfProfileIn( __METHOD__ );
 506                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
 507
 508                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".
 509                         wfMsg('search-interwiki-caption')."</div>\n";
 510                 $off = $this->offset + 1;
 511                 $out .= "<ul class='mw-search-iwresults'>\n";
 512
 513                 // work out custom project captions
 514                 $customCaptions = array();
 515                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
 516                 foreach($customLines as $line) {
 517                         $parts = explode(":",$line,2);
 518                         if(count($parts) == 2) // validate line
 519                                 $customCaptions[$parts[0]] = $parts[1];
 520                 }
 521
 522                 $prev = null;
 523                 while( $result = $matches->next() ) {
 524                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
 525                         $prev = $result->getInterwikiPrefix();
 526                 }
 527                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
 528                 $out .= "</ul></div>\n";
 529
 530                 // convert the whole thing to desired language variant
 531                 $out = $wgContLang->convert( $out );
 532                 wfProfileOut( __METHOD__ );
 533                 return $out;
 534         }
 535
 536         /**
 537          * Show single interwiki link
 538          *
 539          * @param SearchResult $result
 540          * @param string $lastInterwiki
 541          * @param array $terms
 542          * @param string $query
 543          * @param array $customCaptions iw prefix -> caption
 544          */
 545         protected function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
 546                 wfProfileIn( __METHOD__ );
 547                 global $wgContLang, $wgLang;
 548
 549                 if( $result->isBrokenTitle() ) {
 550                         wfProfileOut( __METHOD__ );
 551                         return "<!-- Broken link in search result -->\n";
 552                 }
 553
 554                 $t = $result->getTitle();
 555
 556                 $link = $this->sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
 557
 558                 // format redirect if any
 559                 $redirectTitle = $result->getRedirectTitle();
 560                 $redirectText = $result->getRedirectSnippet($terms);
 561                 $redirect = '';
 562                 if( !is_null($redirectTitle) )
 563                         $redirect = "<span class='searchalttitle'>"
 564                                 .wfMsg('search-redirect',$this->sk->makeKnownLinkObj( $redirectTitle, $redirectText))
 565                                 ."</span>";
 566
 567                 $out = "";
 568                 // display project name
 569                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()) {
 570                         if( key_exists($t->getInterwiki(),$customCaptions) )
 571                                 // captions from 'search-interwiki-custom'
 572                                 $caption = $customCaptions[$t->getInterwiki()];
 573                         else{
 574                                 // default is to show the hostname of the other wiki which might suck
 575                                 // if there are many wikis on one hostname
 576                                 $parsed = parse_url($t->getFullURL());
 577                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
 578                         }
 579                         // "more results" link (special page stuff could be localized, but we might not know target lang)
 580                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
 581                         $searchLink = $this->sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
 582                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
 583                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>
 584                                 {$searchLink}</span>{$caption}</div>\n<ul>";
 585                 }
 586
 587                 $out .= "<li>{$link} {$redirect}</li>\n";
 588                 wfProfileOut( __METHOD__ );
 589                 return $out;
 590         }
 591
 592
 593         /**
 594          * Generates the power search box at bottom of [[Special:Search]]
 595          * @param $term string: search term
 596          * @return $out string: HTML form
 597          */
 598         protected function powerSearchBox( $term ) {
 599                 global $wgScript;
 600
 601                 $namespaces = SearchEngine::searchableNamespaces();
 602
 603                 $tables = $this->namespaceTables( $namespaces );
 604
 605                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
 606                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
 607                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
 608                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' )) . "\n";
 609                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 610
 611                 $redirectText = '';
 612                 // show redirects check only if backend supports it
 613                 if( $this->searchEngine->acceptListRedirects() ) {
 614                         $redirectText = "<p>". $redirect . " " . $redirectLabel ."</p>";
 615                 }
 616
 617                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
 618                         Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n" .
 619                         "<p>" .
 620                         wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
 621                         "</p>\n" .
 622                         '<input type="hidden" name="advanced" value="'.$this->searchAdvanced."\"/>\n".
 623                         $tables .
 624                         "<hr style=\"clear: both;\" />\n".
 625                         $redirectText ."\n".
 626                         "<div style=\"padding-top:2px;padding-bottom:2px;\">".
 627                         wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
 628                         "&nbsp;" .
 629                         $searchField .
 630                         "&nbsp;" .
 631                         $searchButton .
 632                         "</div>".
 633                         "</form>";
 634                 $t = Title::newFromText( $term );
 635                 /* if( $t != null && count($this->namespaces) === 1 ) {
 636                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 637                 } */
 638                 return Xml::openElement( 'fieldset', array('id' => 'mw-searchoptions','style' => 'margin:0em;') ) .
 639                         Xml::element( 'legend', null, wfMsg('powersearch-legend') ) .
 640                         $this->formHeader($term) . $out . $this->didYouMeanHtml .
 641                         Xml::closeElement( 'fieldset' );
 642         }
 643
 644         protected function searchFocus() {
 645                 global $wgJsMimeType;
 646                 return "<script type=\"$wgJsMimeType\">" .
 647                         "hookEvent(\"load\", function() {" .
 648                                 "document.getElementById('searchText').focus();" .
 649                         "});" .
 650                         "</script>";
 651         }
 652
 653         protected function powerSearchFocus() {
 654                 global $wgJsMimeType;
 655                 return "<script type=\"$wgJsMimeType\">" .
 656                         "hookEvent(\"load\", function() {" .
 657                                 "document.getElementById('powerSearchText').focus();" .
 658                         "});" .
 659                         "</script>";
 660         }
 661
 662         protected function formHeader( $term ) {
 663                 global $wgContLang, $wgCanonicalNamespaceNames;
 664
 665                 $sep = '&nbsp;&nbsp;&nbsp;';
 666                 $out = Xml::openElement('div', array( 'style' => 'padding-bottom:0.5em;' ) );
 667
 668                 $bareterm = $term;
 669                 if( $this->startsWithImage( $term ) )
 670                         $bareterm = substr( $term, strpos( $term, ':' ) + 1 ); // delete all/image prefix
 671
 672                 $nsAllSet = array_keys( SearchEngine::searchableNamespaces() );
 673
 674                 // search profiles headers
 675                 $m = wfMsg( 'searchprofile-articles' );
 676                 $tt = wfMsg( 'searchprofile-articles-tooltip',
 677                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::defaultNamespaces() ) ) );
 678                 if( $this->active == 'default' ) {
 679                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 680                 } else {
 681                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::defaultNamespaces(), $m, $tt );
 682                 }
 683                 $out .= $sep;
 684
 685                 $m = wfMsg( 'searchprofile-images' );
 686                 $tt = wfMsg( 'searchprofile-images-tooltip' );
 687                 if( $this->active == 'images' ) {
 688                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 689                 } else {
 690                         $imageTextForm = $wgContLang->getFormattedNsText(NS_FILE).':'.$bareterm;
 691                         $out .= $this->makeSearchLink( $imageTextForm, array( NS_FILE ) , $m, $tt );
 692                 }
 693                 $out .= $sep;
 694
 695                 /*
 696                 $m = wfMsg( 'searchprofile-articles-and-proj' );
 697                 $tt = wfMsg( 'searchprofile-project-tooltip',
 698                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::defaultAndProjectNamespaces() ) ) );
 699                 if( $this->active == 'withproject' ) {
 700                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 701                 } else {
 702                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::defaultAndProjectNamespaces(), $m, $tt );
 703                 }
 704                 $out .= $sep;
 705                 */
 706
 707                 $m = wfMsg( 'searchprofile-project' );
 708                 $tt = wfMsg( 'searchprofile-project-tooltip',
 709                         implode( ', ', SearchEngine::namespacesAsText( SearchEngine::projectNamespaces() ) ) );
 710                 if( $this->active == 'project' ) {
 711                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 712                 } else {
 713                         $out .= $this->makeSearchLink( $bareterm, SearchEngine::projectNamespaces(), $m, $tt );
 714                 }
 715                 $out .= $sep;
 716
 717                 $m = wfMsg( 'searchprofile-everything' );
 718                 $tt = wfMsg( 'searchprofile-everything-tooltip' );
 719                 if( $this->active == 'all' ) {
 720                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 721                 } else {
 722                         $out .= $this->makeSearchLink( $bareterm, $nsAllSet, $m, $tt );
 723                 }
 724                 $out .= $sep;
 725
 726                 $m = wfMsg( 'searchprofile-advanced' );
 727                 $tt = wfMsg( 'searchprofile-advanced-tooltip' );
 728                 if( $this->active == 'advanced' ) {
 729                         $out .= Xml::element( 'strong', array( 'title'=>$tt ), $m );
 730                 } else {
 731                         $out .= $this->makeSearchLink( $bareterm, $this->namespaces, $m, $tt, array( 'advanced' => '1' ) );
 732                 }
 733                 $out .= Xml::closeElement('div') ;
 734
 735                 return $out;
 736         }
 737
 738         protected function shortDialog( $term ) {
 739                 global $wgScript;
 740                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
 741                 $searchable = SearchEngine::searchableNamespaces();
 742                 $out = Xml::openElement( 'form', array( 'id' => 'search', 'method' => 'get', 'action' => $wgScript ) );
 743                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n";
 744                 // show namespaces only for advanced search
 745                 if( $this->active == 'advanced' ) {
 746                         $active = array();
 747                         foreach( $this->namespaces as $ns ) {
 748                                 $active[$ns] = $searchable[$ns];
 749                         }
 750                         $out .= wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) . "<br/>\n";
 751                         $out .= $this->namespaceTables( $active, 1 )."<br/>\n";
 752                 // Still keep namespace settings otherwise, but don't show them
 753                 } else {
 754                         foreach( $this->namespaces as $ns ) {
 755                                 $out .= Xml::hidden( "ns{$ns}", '1' );
 756                         }
 757                 }
 758                 // Keep redirect setting
 759                 $out .= Xml::hidden( "redirs", (int)$this->searchRedirects );
 760                 // Term box
 761                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . "\n";
 762                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
 763                 $out .= ' (' . wfMsgExt('searchmenu-help',array('parseinline') ) . ')';
 764                 $out .= Xml::closeElement( 'form' );
 765                 // Add prefix link for single-namespace searches
 766                 $t = Title::newFromText( $term );
 767                 /*if( $t != null && count($this->namespaces) === 1 ) {
 768                         $out .= wfMsgExt( 'searchmenu-prefix', array('parseinline'), $term );
 769                 }*/
 770                 return Xml::openElement( 'fieldset', array('id' => 'mw-searchoptions','style' => 'margin:0em;') ) .
 771                         Xml::element( 'legend', null, wfMsg('searchmenu-legend') ) .
 772                         $this->formHeader($term) . $out . $this->didYouMeanHtml .
 773                         Xml::closeElement( 'fieldset' );
 774         }
 775
 776         /** Make a search link with some target namespaces */
 777         protected function makeSearchLink( $term, $namespaces, $label, $tooltip, $params=array() ) {
 778                 $opt = $params;
 779                 foreach( $namespaces as $n ) {
 780                         $opt['ns' . $n] = 1;
 781                 }
 782                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
 783
 784                 $st = SpecialPage::getTitleFor( 'Search' );
 785                 $stParams = wfArrayToCGI( array( 'search' => $term, 'fulltext' => wfMsg( 'search' ) ), $opt );
 786
 787                 return Xml::element( 'a',
 788                         array( 'href'=> $st->getLocalURL( $stParams ), 'title' => $tooltip ),
 789                         $label );
 790         }
 791
 792         /** Check if query starts with image: prefix */
 793         protected function startsWithImage( $term ) {
 794                 global $wgContLang;
 795
 796                 $p = explode( ':', $term );
 797                 if( count( $p ) > 1 ) {
 798                         return $wgContLang->getNsIndex( $p[0] ) == NS_FILE;
 799                 }
 800                 return false;
 801         }
 802
 803         protected function namespaceTables( $namespaces, $rowsPerTable = 3 ) {
 804                 global $wgContLang;
 805                 // Group namespaces into rows according to subject.
 806                 // Try not to make too many assumptions about namespace numbering.
 807                 $rows = array();
 808                 $tables = "";
 809                 foreach( $namespaces as $ns => $name ) {
 810                         $subj = MWNamespace::getSubject( $ns );
 811                         if( !array_key_exists( $subj, $rows ) ) {
 812                                 $rows[$subj] = "";
 813                         }
 814                         $name = str_replace( '_', ' ', $name );
 815                         if( '' == $name ) {
 816                                 $name = wfMsg( 'blanknamespace' );
 817                         }
 818                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
 819                                 Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
 820                                 Xml::closeElement( 'td' ) . "\n";
 821                 }
 822                 $rows = array_values( $rows );
 823                 $numRows = count( $rows );
 824                 // Lay out namespaces in multiple floating two-column tables so they'll
 825                 // be arranged nicely while still accommodating different screen widths
 826                 // Float to the right on RTL wikis
 827                 $tableStyle = $wgContLang->isRTL() ?
 828                         'float: right; margin: 0 0 0em 1em' : 'float: left; margin: 0 1em 0em 0';
 829                 // Build the final HTML table...
 830                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
 831                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
 832                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
 833                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
 834                         }
 835                         $tables .= Xml::closeElement( 'table' ) . "\n";
 836                 }
 837                 return $tables;
 838         }
 839 }
 840
 841 /**
 842  * implements Special:Search - Run text & title search and display the output
 843  * @ingroup SpecialPage
 844  */
 845 class SpecialSearchOld {
 846
 847         /**
 848          * Set up basic search parameters from the request and user settings.
 849          * Typically you'll pass $wgRequest and $wgUser.
 850          *
 851          * @param WebRequest $request
 852          * @param User $user
 853          * @public
 854          */
 855         function __construct( &$request, &$user ) {
 856                 list( $this->limit, $this->offset ) = $request->getLimitOffset( 20, 'searchlimit' );
 857
 858                 $this->namespaces = $this->powerSearch( $request );
 859                 if( empty( $this->namespaces ) ) {
 860                         $this->namespaces = SearchEngine::userNamespaces( $user );
 861                 }
 862
 863                 $this->searchRedirects = $request->getcheck( 'redirs' ) ? true : false;
 864         }
 865
 866         /**
 867          * If an exact title match can be found, jump straight ahead to it.
 868          * @param string $term
 869          * @public
 870          */
 871         function goResult( $term ) {
 872                 global $wgOut;
 873                 global $wgGoToEdit;
 874
 875                 $this->setupPage( $term );
 876
 877                 # Try to go to page as entered.
 878                 $t = Title::newFromText( $term );
 879
 880                 # If the string cannot be used to create a title
 881                 if( is_null( $t ) ){
 882                         return $this->showResults( $term );
 883                 }
 884
 885                 # If there's an exact or very near match, jump right there.
 886                 $t = SearchEngine::getNearMatch( $term );
 887                 if( !is_null( $t ) ) {
 888                         $wgOut->redirect( $t->getFullURL() );
 889                         return;
 890                 }
 891
 892                 # No match, generate an edit URL
 893                 $t = Title::newFromText( $term );
 894                 if( ! is_null( $t ) ) {
 895                         wfRunHooks( 'SpecialSearchNogomatch', array( &$t ) );
 896                         # If the feature is enabled, go straight to the edit page
 897                         if ( $wgGoToEdit ) {
 898                                 $wgOut->redirect( $t->getFullURL( 'action=edit' ) );
 899                                 return;
 900                         }
 901                 }
 902
 903                 $wgOut->wrapWikiMsg( "==$1==\n", 'notitlematches' );
 904                 if( $t->quickUserCan( 'create' ) && $t->quickUserCan( 'edit' ) ) {
 905                         $wgOut->addWikiMsg( 'noexactmatch', wfEscapeWikiText( $term ) );
 906                 } else {
 907                         $wgOut->addWikiMsg( 'noexactmatch-nocreate', wfEscapeWikiText( $term ) );
 908                 }
 909
 910                 return $this->showResults( $term );
 911         }
 912
 913         /**
 914          * @param string $term
 915          * @public
 916          */
 917         function showResults( $term ) {
 918                 wfProfileIn( __METHOD__ );
 919                 global $wgOut, $wgUser;
 920                 $sk = $wgUser->getSkin();
 921
 922                 $this->setupPage( $term );
 923
 924                 $wgOut->addWikiMsg( 'searchresulttext' );
 925
 926                 if( '' === trim( $term ) ) {
 927                         // Empty query -- straight view of search form
 928                         $wgOut->setSubtitle( '' );
 929                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 930                         $wgOut->addHTML( $this->powerSearchFocus() );
 931                         wfProfileOut( __METHOD__ );
 932                         return;
 933                 }
 934
 935                 global $wgDisableTextSearch;
 936                 if ( $wgDisableTextSearch ) {
 937                         global $wgSearchForwardUrl;
 938                         if( $wgSearchForwardUrl ) {
 939                                 $url = str_replace( '$1', urlencode( $term ), $wgSearchForwardUrl );
 940                                 $wgOut->redirect( $url );
 941                                 wfProfileOut( __METHOD__ );
 942                                 return;
 943                         }
 944                         global $wgInputEncoding;
 945                         $wgOut->addHTML(
 946                                 Xml::openElement( 'fieldset' ) .
 947                                 Xml::element( 'legend', null, wfMsg( 'search-external' ) ) .
 948                                 Xml::element( 'p', array( 'class' => 'mw-searchdisabled' ), wfMsg( 'searchdisabled' ) ) .
 949                                 wfMsg( 'googlesearch',
 950                                         htmlspecialchars( $term ),
 951                                         htmlspecialchars( $wgInputEncoding ),
 952                                         htmlspecialchars( wfMsg( 'searchbutton' ) )
 953                                 ) .
 954                                 Xml::closeElement( 'fieldset' )
 955                         );
 956                         wfProfileOut( __METHOD__ );
 957                         return;
 958                 }
 959
 960                 $wgOut->addHTML( $this->shortDialog( $term ) );
 961
 962                 $search = SearchEngine::create();
 963                 $search->setLimitOffset( $this->limit, $this->offset );
 964                 $search->setNamespaces( $this->namespaces );
 965                 $search->showRedirects = $this->searchRedirects;
 966                 $rewritten = $search->replacePrefixes($term);
 967
 968                 $titleMatches = $search->searchTitle( $rewritten );
 969
 970                 // Sometimes the search engine knows there are too many hits
 971                 if ($titleMatches instanceof SearchResultTooMany) {
 972                         $wgOut->addWikiText( '==' . wfMsg( 'toomanymatches' ) . "==\n" );
 973                         $wgOut->addHTML( $this->powerSearchBox( $term ) );
 974                         $wgOut->addHTML( $this->powerSearchFocus() );
 975                         wfProfileOut( __METHOD__ );
 976                         return;
 977                 }
 978
 979                 $textMatches = $search->searchText( $rewritten );
 980
 981                 // did you mean... suggestions
 982                 if($textMatches && $textMatches->hasSuggestion()){
 983                         $st = SpecialPage::getTitleFor( 'Search' );
 984                         $stParams = wfArrayToCGI( array(
 985                                         'search'        => $textMatches->getSuggestionQuery(),
 986                                         'fulltext'      => wfMsg('search')),
 987                                         $this->powerSearchOptions());
 988
 989                         $suggestLink = '<a href="'.$st->escapeLocalURL($stParams).'">'.
 990                                         $textMatches->getSuggestionSnippet().'</a>';
 991
 992                         $wgOut->addHTML('<div class="searchdidyoumean">'.wfMsg('search-suggest',$suggestLink).'</div>');
 993                 }
 994
 995                 // show number of results
 996                 $num = ( $titleMatches ? $titleMatches->numRows() : 0 )
 997                         + ( $textMatches ? $textMatches->numRows() : 0);
 998                 $totalNum = 0;
 999                 if($titleMatches && !is_null($titleMatches->getTotalHits()))
1000                         $totalNum += $titleMatches->getTotalHits();
1001                 if($textMatches && !is_null($textMatches->getTotalHits()))
1002                         $totalNum += $textMatches->getTotalHits();
1003                 if ( $num > 0 ) {
1004                         if ( $totalNum > 0 ){
1005                                 $top = wfMsgExt('showingresultstotal', array( 'parseinline' ),
1006                                         $this->offset+1, $this->offset+$num, $totalNum, $num );
1007                         } elseif ( $num >= $this->limit ) {
1008                                 $top = wfShowingResults( $this->offset, $this->limit );
1009                         } else {
1010                                 $top = wfShowingResultsNum( $this->offset, $this->limit, $num );
1011                         }
1012                         $wgOut->addHTML( "<p class='mw-search-numberresults'>{$top}</p>\n" );
1013                 }
1014
1015                 // prev/next links
1016                 if( $num || $this->offset ) {
1017                         $prevnext = wfViewPrevNext( $this->offset, $this->limit,
1018                                 SpecialPage::getTitleFor( 'Search' ),
1019                                 wfArrayToCGI(
1020                                         $this->powerSearchOptions(),
1021                                         array( 'search' => $term ) ),
1022                                         ($num < $this->limit) );
1023                         $wgOut->addHTML( "<p class='mw-search-pager-top'>{$prevnext}</p>\n" );
1024                         wfRunHooks( 'SpecialSearchResults', array( $term, &$titleMatches, &$textMatches ) );
1025                 } else {
1026                         wfRunHooks( 'SpecialSearchNoResults', array( $term ) );
1027                 }
1028
1029                 if( $titleMatches ) {
1030                         if( $titleMatches->numRows() ) {
1031                                 $wgOut->wrapWikiMsg( "==$1==\n", 'titlematches' );
1032                                 $wgOut->addHTML( $this->showMatches( $titleMatches ) );
1033                         }
1034                         $titleMatches->free();
1035                 }
1036
1037                 if( $textMatches ) {
1038                         // output appropriate heading
1039                         if( $textMatches->numRows() ) {
1040                                 if($titleMatches)
1041                                         $wgOut->wrapWikiMsg( "==$1==\n", 'textmatches' );
1042                                 else // if no title matches the heading is redundant
1043                                         $wgOut->addHTML("<hr/>");
1044                         } elseif( $num == 0 ) {
1045                                 # Don't show the 'no text matches' if we received title matches
1046                                 $wgOut->wrapWikiMsg( "==$1==\n", 'notextmatches' );
1047                         }
1048                         // show interwiki results if any
1049                         if( $textMatches->hasInterwikiResults() )
1050                                 $wgOut->addHTML( $this->showInterwiki( $textMatches->getInterwikiResults(), $term ));
1051                         // show results
1052                         if( $textMatches->numRows() )
1053                                 $wgOut->addHTML( $this->showMatches( $textMatches ) );
1054
1055                         $textMatches->free();
1056                 }
1057
1058                 if ( $num == 0 ) {
1059                         $wgOut->addWikiMsg( 'nonefound' );
1060                 }
1061                 if( $num || $this->offset ) {
1062                         $wgOut->addHTML( "<p class='mw-search-pager-bottom'>{$prevnext}</p>\n" );
1063                 }
1064                 $wgOut->addHTML( $this->powerSearchBox( $term ) );
1065                 wfProfileOut( __METHOD__ );
1066         }
1067
1068         #------------------------------------------------------------------
1069         # Private methods below this line
1070
1071         /**
1072          *
1073          */
1074         function setupPage( $term ) {
1075                 global $wgOut;
1076                 if( !empty( $term ) ){
1077                         $wgOut->setPageTitle( wfMsg( 'searchresults') );
1078                         $wgOut->setHTMLTitle( wfMsg( 'pagetitle', wfMsg( 'searchresults-title', $term) ) );
1079                 }
1080                 $subtitlemsg = ( Title::newFromText( $term ) ? 'searchsubtitle' : 'searchsubtitleinvalid' );
1081                 $wgOut->setSubtitle( $wgOut->parse( wfMsg( $subtitlemsg, wfEscapeWikiText($term) ) ) );
1082                 $wgOut->setArticleRelated( false );
1083                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1084         }
1085
1086         /**
1087          * Extract "power search" namespace settings from the request object,
1088          * returning a list of index numbers to search.
1089          *
1090          * @param WebRequest $request
1091          * @return array
1092          * @private
1093          */
1094         function powerSearch( &$request ) {
1095                 $arr = array();
1096                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1097                         if( $request->getCheck( 'ns' . $ns ) ) {
1098                                 $arr[] = $ns;
1099                         }
1100                 }
1101                 return $arr;
1102         }
1103
1104         /**
1105          * Reconstruct the 'power search' options for links
1106          * @return array
1107          * @private
1108          */
1109         function powerSearchOptions() {
1110                 $opt = array();
1111                 foreach( $this->namespaces as $n ) {
1112                         $opt['ns' . $n] = 1;
1113                 }
1114                 $opt['redirs'] = $this->searchRedirects ? 1 : 0;
1115                 return $opt;
1116         }
1117
1118         /**
1119          * Show whole set of results
1120          *
1121          * @param SearchResultSet $matches
1122          */
1123         function showMatches( &$matches ) {
1124                 wfProfileIn( __METHOD__ );
1125
1126                 global $wgContLang;
1127                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1128
1129                 $out = "";
1130
1131                 $infoLine = $matches->getInfo();
1132                 if( !is_null($infoLine) )
1133                         $out .= "\n<!-- {$infoLine} -->\n";
1134
1135
1136                 $off = $this->offset + 1;
1137                 $out .= "<ul class='mw-search-results'>\n";
1138
1139                 while( $result = $matches->next() ) {
1140                         $out .= $this->showHit( $result, $terms );
1141                 }
1142                 $out .= "</ul>\n";
1143
1144                 // convert the whole thing to desired language variant
1145                 global $wgContLang;
1146                 $out = $wgContLang->convert( $out );
1147                 wfProfileOut( __METHOD__ );
1148                 return $out;
1149         }
1150
1151         /**
1152          * Format a single hit result
1153          * @param SearchResult $result
1154          * @param array $terms terms to highlight
1155          */
1156         function showHit( $result, $terms ) {
1157                 wfProfileIn( __METHOD__ );
1158                 global $wgUser, $wgContLang, $wgLang;
1159
1160                 if( $result->isBrokenTitle() ) {
1161                         wfProfileOut( __METHOD__ );
1162                         return "<!-- Broken link in search result -->\n";
1163                 }
1164
1165                 $t = $result->getTitle();
1166                 $sk = $wgUser->getSkin();
1167
1168                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1169
1170                 //If page content is not readable, just return the title.
1171                 //This is not quite safe, but better than showing excerpts from non-readable pages
1172                 //Note that hiding the entry entirely would screw up paging.
1173                 if (!$t->userCanRead()) {
1174                         wfProfileOut( __METHOD__ );
1175                         return "<li>{$link}</li>\n";
1176                 }
1177
1178                 // If the page doesn't *exist*... our search index is out of date.
1179                 // The least confusing at this point is to drop the result.
1180                 // You may get less results, but... oh well. :P
1181                 if( $result->isMissingRevision() ) {
1182                         wfProfileOut( __METHOD__ );
1183                         return "<!-- missing page " .
1184                                 htmlspecialchars( $t->getPrefixedText() ) . "-->\n";
1185                 }
1186
1187                 // format redirects / relevant sections
1188                 $redirectTitle = $result->getRedirectTitle();
1189                 $redirectText = $result->getRedirectSnippet($terms);
1190                 $sectionTitle = $result->getSectionTitle();
1191                 $sectionText = $result->getSectionSnippet($terms);
1192                 $redirect = '';
1193                 if( !is_null($redirectTitle) )
1194                         $redirect = "<span class='searchalttitle'>"
1195                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1196                                 ."</span>";
1197                 $section = '';
1198                 if( !is_null($sectionTitle) )
1199                         $section = "<span class='searchalttitle'>"
1200                                 .wfMsg('search-section', $sk->makeKnownLinkObj( $sectionTitle, $sectionText))
1201                                 ."</span>";
1202
1203                 // format text extract
1204                 $extract = "<div class='searchresult'>".$result->getTextSnippet($terms)."</div>";
1205
1206                 // format score
1207                 if( is_null( $result->getScore() ) ) {
1208                         // Search engine doesn't report scoring info
1209                         $score = '';
1210                 } else {
1211                         $percent = sprintf( '%2.1f', $result->getScore() * 100 );
1212                         $score = wfMsg( 'search-result-score', $wgLang->formatNum( $percent ) )
1213                                 . ' - ';
1214                 }
1215
1216                 // format description
1217                 $byteSize = $result->getByteSize();
1218                 $wordCount = $result->getWordCount();
1219                 $timestamp = $result->getTimestamp();
1220                 $size = wfMsgExt( 'search-result-size', array( 'parsemag', 'escape' ),
1221                         $sk->formatSize( $byteSize ),
1222                         $wordCount );
1223                 $date = $wgLang->timeanddate( $timestamp );
1224
1225                 // link to related articles if supported
1226                 $related = '';
1227                 if( $result->hasRelated() ){
1228                         $st = SpecialPage::getTitleFor( 'Search' );
1229                         $stParams = wfArrayToCGI( $this->powerSearchOptions(),
1230                                 array('search'    => wfMsgForContent('searchrelated').':'.$t->getPrefixedText(),
1231                                       'fulltext'  => wfMsg('search') ));
1232
1233                         $related = ' -- <a href="'.$st->escapeLocalURL($stParams).'">'.
1234                                 wfMsg('search-relatedarticle').'</a>';
1235                 }
1236
1237                 // Include a thumbnail for media files...
1238                 if( $t->getNamespace() == NS_FILE ) {
1239                         $img = wfFindFile( $t );
1240                         if( $img ) {
1241                                 $thumb = $img->transform( array( 'width' => 120, 'height' => 120 ) );
1242                                 if( $thumb ) {
1243                                         $desc = $img->getShortDesc();
1244                                         wfProfileOut( __METHOD__ );
1245                                         // Ugly table. :D
1246                                         // Float doesn't seem to interact well with the bullets.
1247                                         // Table messes up vertical alignment of the bullet, but I'm
1248                                         // not sure what more I can do about that. :(
1249                                         return "<li>" .
1250                                                 '<table class="searchResultImage">' .
1251                                                 '<tr>' .
1252                                                 '<td width="120" align="center">' .
1253                                                 $thumb->toHtml( array( 'desc-link' => true ) ) .
1254                                                 '</td>' .
1255                                                 '<td valign="top">' .
1256                                                 $link .
1257                                                 $extract .
1258                                                 "<div class='mw-search-result-data'>{$score}{$desc} - {$date}{$related}</div>" .
1259                                                 '</td>' .
1260                                                 '</tr>' .
1261                                                 '</table>' .
1262                                                 "</li>\n";
1263                                 }
1264                         }
1265                 }
1266
1267                 wfProfileOut( __METHOD__ );
1268                 return "<li>{$link} {$redirect} {$section} {$extract}\n" .
1269                         "<div class='mw-search-result-data'>{$score}{$size} - {$date}{$related}</div>" .
1270                         "</li>\n";
1271
1272         }
1273
1274         /**
1275          * Show results from other wikis
1276          *
1277          * @param SearchResultSet $matches
1278          */
1279         function showInterwiki( &$matches, $query ) {
1280                 wfProfileIn( __METHOD__ );
1281
1282                 global $wgContLang;
1283                 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
1284
1285                 $out = "<div id='mw-search-interwiki'><div id='mw-search-interwiki-caption'>".wfMsg('search-interwiki-caption')."</div>\n";
1286                 $off = $this->offset + 1;
1287                 $out .= "<ul start='{$off}' class='mw-search-iwresults'>\n";
1288
1289                 // work out custom project captions
1290                 $customCaptions = array();
1291                 $customLines = explode("\n",wfMsg('search-interwiki-custom')); // format per line <iwprefix>:<caption>
1292                 foreach($customLines as $line){
1293                         $parts = explode(":",$line,2);
1294                         if(count($parts) == 2) // validate line
1295                                 $customCaptions[$parts[0]] = $parts[1];
1296                 }
1297
1298
1299                 $prev = null;
1300                 while( $result = $matches->next() ) {
1301                         $out .= $this->showInterwikiHit( $result, $prev, $terms, $query, $customCaptions );
1302                         $prev = $result->getInterwikiPrefix();
1303                 }
1304                 // FIXME: should support paging in a non-confusing way (not sure how though, maybe via ajax)..
1305                 $out .= "</ul></div>\n";
1306
1307                 // convert the whole thing to desired language variant
1308                 global $wgContLang;
1309                 $out = $wgContLang->convert( $out );
1310                 wfProfileOut( __METHOD__ );
1311                 return $out;
1312         }
1313
1314         /**
1315          * Show single interwiki link
1316          *
1317          * @param SearchResult $result
1318          * @param string $lastInterwiki
1319          * @param array $terms
1320          * @param string $query
1321          * @param array $customCaptions iw prefix -> caption
1322          */
1323         function showInterwikiHit( $result, $lastInterwiki, $terms, $query, $customCaptions) {
1324                 wfProfileIn( __METHOD__ );
1325                 global $wgUser, $wgContLang, $wgLang;
1326
1327                 if( $result->isBrokenTitle() ) {
1328                         wfProfileOut( __METHOD__ );
1329                         return "<!-- Broken link in search result -->\n";
1330                 }
1331
1332                 $t = $result->getTitle();
1333                 $sk = $wgUser->getSkin();
1334
1335                 $link = $sk->makeKnownLinkObj( $t, $result->getTitleSnippet($terms));
1336
1337                 // format redirect if any
1338                 $redirectTitle = $result->getRedirectTitle();
1339                 $redirectText = $result->getRedirectSnippet($terms);
1340                 $redirect = '';
1341                 if( !is_null($redirectTitle) )
1342                         $redirect = "<span class='searchalttitle'>"
1343                                 .wfMsg('search-redirect',$sk->makeKnownLinkObj( $redirectTitle, $redirectText))
1344                                 ."</span>";
1345
1346                 $out = "";
1347                 // display project name
1348                 if(is_null($lastInterwiki) || $lastInterwiki != $t->getInterwiki()){
1349                         if( key_exists($t->getInterwiki(),$customCaptions) )
1350                                 // captions from 'search-interwiki-custom'
1351                                 $caption = $customCaptions[$t->getInterwiki()];
1352                         else{
1353                                 // default is to show the hostname of the other wiki which might suck
1354                                 // if there are many wikis on one hostname
1355                                 $parsed = parse_url($t->getFullURL());
1356                                 $caption = wfMsg('search-interwiki-default', $parsed['host']);
1357                         }
1358                         // "more results" link (special page stuff could be localized, but we might not know target lang)
1359                         $searchTitle = Title::newFromText($t->getInterwiki().":Special:Search");
1360                         $searchLink = $sk->makeKnownLinkObj( $searchTitle, wfMsg('search-interwiki-more'),
1361                                 wfArrayToCGI(array('search' => $query, 'fulltext' => 'Search')));
1362                         $out .= "</ul><div class='mw-search-interwiki-project'><span class='mw-search-interwiki-more'>{$searchLink}</span>{$caption}</div>\n<ul>";
1363                 }
1364
1365                 $out .= "<li>{$link} {$redirect}</li>\n";
1366                 wfProfileOut( __METHOD__ );
1367                 return $out;
1368         }
1369
1370
1371         /**
1372          * Generates the power search box at bottom of [[Special:Search]]
1373          * @param $term string: search term
1374          * @return $out string: HTML form
1375          */
1376         function powerSearchBox( $term ) {
1377                 global $wgScript, $wgContLang;
1378
1379                 $namespaces = SearchEngine::searchableNamespaces();
1380
1381                 // group namespaces into rows according to subject; try not to make too
1382                 // many assumptions about namespace numbering
1383                 $rows = array();
1384                 foreach( $namespaces as $ns => $name ) {
1385                         $subj = MWNamespace::getSubject( $ns );
1386                         if( !array_key_exists( $subj, $rows ) ) {
1387                                 $rows[$subj] = "";
1388                         }
1389                         $name = str_replace( '_', ' ', $name );
1390                         if( '' == $name ) {
1391                                 $name = wfMsg( 'blanknamespace' );
1392                         }
1393                         $rows[$subj] .= Xml::openElement( 'td', array( 'style' => 'white-space: nowrap' ) ) .
1394                                         Xml::checkLabel( $name, "ns{$ns}", "mw-search-ns{$ns}", in_array( $ns, $this->namespaces ) ) .
1395                                         Xml::closeElement( 'td' ) . "\n";
1396                 }
1397                 $rows = array_values( $rows );
1398                 $numRows = count( $rows );
1399
1400                 // lay out namespaces in multiple floating two-column tables so they'll
1401                 // be arranged nicely while still accommodating different screen widths
1402                 $rowsPerTable = 3;  // seems to look nice
1403
1404                 // float to the right on RTL wikis
1405                 $tableStyle = ( $wgContLang->isRTL() ?
1406                                 'float: right; margin: 0 0 1em 1em' :
1407                                 'float: left; margin: 0 1em 1em 0' );
1408
1409                 $tables = "";
1410                 for( $i = 0; $i < $numRows; $i += $rowsPerTable ) {
1411                         $tables .= Xml::openElement( 'table', array( 'style' => $tableStyle ) );
1412                         for( $j = $i; $j < $i + $rowsPerTable && $j < $numRows; $j++ ) {
1413                                 $tables .= "<tr>\n" . $rows[$j] . "</tr>";
1414                         }
1415                         $tables .= Xml::closeElement( 'table' ) . "\n";
1416                 }
1417
1418                 $redirect = Xml::check( 'redirs', $this->searchRedirects, array( 'value' => '1', 'id' => 'redirs' ) );
1419                 $redirectLabel = Xml::label( wfMsg( 'powersearch-redir' ), 'redirs' );
1420                 $searchField = Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'powerSearchText' ) );
1421                 $searchButton = Xml::submitButton( wfMsg( 'powersearch' ), array( 'name' => 'fulltext' ) ) . "\n";
1422                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1423
1424                 $out = Xml::openElement( 'form', array( 'id' => 'powersearch', 'method' => 'get', 'action' => $wgScript ) ) .
1425                         Xml::fieldset( wfMsg( 'powersearch-legend' ),
1426                                 Xml::hidden( 'title', $searchTitle->getPrefixedText() ) . "\n" .
1427                                 "<p>" .
1428                                 wfMsgExt( 'powersearch-ns', array( 'parseinline' ) ) .
1429                                 "</p>\n" .
1430                                 $tables .
1431                                 "<hr style=\"clear: both\" />\n" .
1432                                 "<p>" .
1433                                 $redirect . " " . $redirectLabel .
1434                                 "</p>\n" .
1435                                 wfMsgExt( 'powersearch-field', array( 'parseinline' ) ) .
1436                                 "&nbsp;" .
1437                                 $searchField .
1438                                 "&nbsp;" .
1439                                 $searchButton ) .
1440                         "</form>";
1441
1442                 return $out;
1443         }
1444
1445         function powerSearchFocus() {
1446                 global $wgJsMimeType;
1447                 return "<script type=\"$wgJsMimeType\">" .
1448                         "hookEvent(\"load\", function(){" .
1449                                 "document.getElementById('powerSearchText').focus();" .
1450                         "});" .
1451                         "</script>";
1452         }
1453
1454         function shortDialog($term) {
1455                 global $wgScript;
1456
1457                 $out  = Xml::openElement( 'form', array(
1458                         'id' => 'search',
1459                         'method' => 'get',
1460                         'action' => $wgScript
1461                 ));
1462                 $searchTitle = SpecialPage::getTitleFor( 'Search' );
1463                 $out .= Xml::hidden( 'title', $searchTitle->getPrefixedText() );
1464                 $out .= Xml::input( 'search', 50, $term, array( 'type' => 'text', 'id' => 'searchText' ) ) . ' ';
1465                 foreach( SearchEngine::searchableNamespaces() as $ns => $name ) {
1466                         if( in_array( $ns, $this->namespaces ) ) {
1467                                 $out .= Xml::hidden( "ns{$ns}", '1' );
1468                         }
1469                 }
1470                 $out .= Xml::submitButton( wfMsg( 'searchbutton' ), array( 'name' => 'fulltext' ) );
1471                 $out .= Xml::closeElement( 'form' );
1472
1473                 return $out;
1474         }
1475 }