includes/OutputPage.php

   1 <?php
   2 if ( ! defined( 'MEDIAWIKI' ) )
   3         die( 1 );
   4
   5 /**
   6  * @todo document
   7  */
   8 class OutputPage {
   9         var $mMetatags = array(), $mKeywords = array(), $mLinktags = array();
  10         var $mExtStyles = array();
  11         var $mPagetitle = '', $mBodytext = '', $mDebugtext = '';
  12         var $mHTMLtitle = '', $mIsarticle = true, $mPrintable = false;
  13         var $mSubtitle = '', $mRedirect = '', $mStatusCode;
  14         var $mLastModified = '', $mETag = false;
  15         var $mCategoryLinks = array(), $mLanguageLinks = array();
  16
  17         var $mScriptLoaderClassList = array();
  18
  19         var $mScripts = '', $mLinkColours, $mPageLinkTitle = '', $mHeadItems = array();
  20         var $mInlineMsg = array();
  21
  22         var $mTemplateIds = array();
  23
  24         var $mAllowUserJs;
  25         var $mSuppressQuickbar = false;
  26         var $mOnloadHandler = '';
  27         var $mDoNothing = false;
  28         var $mContainsOldMagic = 0, $mContainsNewMagic = 0;
  29         var $mIsArticleRelated = true;
  30         protected $mParserOptions = null; // lazy initialised, use parserOptions()
  31         var $mShowFeedLinks = false;
  32         var $mFeedLinksAppendQuery = false;
  33         var $mEnableClientCache = true;
  34         var $mArticleBodyOnly = false;
  35
  36         var $mNewSectionLink = false;
  37         var $mHideNewSectionLink = false;
  38         var $mNoGallery = false;
  39         var $mPageTitleActionText = '';
  40         var $mParseWarnings = array();
  41         var $mSquidMaxage = 0;
  42         var $mRevisionId = null;
  43         protected $mTitle = null;
  44
  45         /**
  46          * An array of stylesheet filenames (relative from skins path), with options
  47          * for CSS media, IE conditions, and RTL/LTR direction.
  48          * For internal use; add settings in the skin via $this->addStyle()
  49          */
  50         var $styles = array();
  51
  52         private $mIndexPolicy = 'index';
  53         private $mFollowPolicy = 'follow';
  54
  55         /**
  56          * Constructor
  57          * Initialise private variables
  58          */
  59         function __construct() {
  60                 global $wgAllowUserJs;
  61                 $this->mAllowUserJs = $wgAllowUserJs;
  62         }
  63
  64         public function redirect( $url, $responsecode = '302' ) {
  65                 # Strip newlines as a paranoia check for header injection in PHP<5.1.2
  66                 $this->mRedirect = str_replace( "\n", '', $url );
  67                 $this->mRedirectCode = $responsecode;
  68         }
  69
  70         public function getRedirect() {
  71                 return $this->mRedirect;
  72         }
  73
  74         /**
  75          * Set the HTTP status code to send with the output.
  76          *
  77          * @param int $statusCode
  78          * @return nothing
  79          */
  80         function setStatusCode( $statusCode ) { $this->mStatusCode = $statusCode; }
  81
  82         /**
  83          * Add a new <meta> tag
  84          * To add an http-equiv meta tag, precede the name with "http:"
  85          *
  86          * @param $name tag name
  87          * @param $val tag value
  88          */
  89         function addMeta( $name, $val ) {
  90                 array_push( $this->mMetatags, array( $name, $val ) );
  91         }
  92
  93         function addKeyword( $text ) {
  94                 if( is_array( $text )) {
  95                         $this->mKeywords = array_merge( $this->mKeywords, $text );
  96                 } else {
  97                         array_push( $this->mKeywords, $text );
  98                 }
  99         }
 100         function addScript( $script ) {
 101                 $this->mScripts .= $script . "\n";
 102         }
 103
 104         /**
 105          * Register and add a stylesheet from an extension directory.
 106          * @param $url String path to sheet.  Provide either a full url (beginning
 107          *             with 'http', etc) or a relative path from the document root
 108          *             (beginning with '/').  Otherwise it behaves identically to
 109          *             addStyle() and draws from the /skins folder.
 110          */
 111         public function addExtensionStyle( $url ) {
 112                 array_push( $this->mExtStyles, $url );
 113         }
 114
 115         /**
 116          * Add a JavaScript file out of skins/common, or a given relative path.
 117          * @param string $file filename in skins/common or complete on-server path (/foo/bar.js)
 118          */
 119         function addScriptFile( $file ) {
 120                 global $wgStylePath, $wgScript, $wgUser;
 121                 global $wgEnableScriptLoader, $wgScriptPath;
 122
 123                 if( substr( $file, 0, 1 ) == '/' ) {
 124                         $path = $file;
 125                 } else {
 126                         $path = "{$wgStylePath}/common/{$file}";
 127                 }
 128
 129                 // If the class can be determined, use the addScriptClass method
 130                 $js_class = $this->getJsClassFromPath( $path );
 131                 if( $js_class ) {
 132                         $this->addScriptClass( $js_class );
 133                         return true;
 134                 }
 135
 136                 //do checks for wiki-titles
 137                 if( strpos( $path, $wgScript ) !== false ) {
 138                         $reqPath = str_replace( $wgScript . '?', '', $path );
 139                         $reqArgs = explode( '&', $reqPath );
 140                         $reqSet = array();
 141
 142                         foreach( $reqArgs as $arg ) {
 143                                 list( $key, $var ) = explode( '=', $arg );
 144                                 $reqSet[$key] = $var;
 145                         }
 146
 147                         if( isset( $reqSet['title'] ) && $reqSet != '' ) {
 148                                 $jsTitleClass = 'WT:' . $reqSet['title'];
 149                                 if( $wgEnableScriptLoader ) {
 150                                         // Extract any extra parameters (for now just skin)
 151                                         $ext_param = ( isset( $reqSet['useskin'] ) && $reqSet['useskin'] != '' )
 152                                                 ? '|useskin=' . ucfirst( $reqSet['useskin'] ) : '';
 153                                         $this->mScriptLoaderClassList[] = $jsTitleClass . $ext_param ;
 154                                         return true;
 155                                 }else{
 156                                         $this->addScript( Html::linkedScript(
 157                                                                 wfAppendQuery( $path, $this->getURIDparam( $jsTitleClass ) )
 158                                                         )
 159                                                 );
 160                                         return true;
 161                                 }
 162                         }
 163                 }
 164                 // If the script loader could not be used, just add the script to the header
 165                 $this->addScript( Html::linkedScript( wfAppendQuery( $path, $this->getURIDparam() ) ) );
 166         }
 167
 168         /**
 169          * Add the core scripts that are included on every page, for later output into the header
 170          */
 171         function addCoreScripts2Top(){
 172                 global $wgEnableScriptLoader, $wgJSAutoloadLocalClasses, $wgScriptPath, $wgEnableJS2system;
 173                 // @todo We should deprecate wikibits in favor of mv_embed and jQuery
 174
 175                 if( $wgEnableJS2system ){
 176                         $core_classes = array( 'window.jQuery', 'mv_embed', 'wikibits' );
 177                 } else {
 178                         $core_classes = array( 'wikibits' );
 179                 }
 180
 181                 if( $wgEnableScriptLoader ){
 182                         //add core to top of mScripts
 183                         $this->mScripts = $this->getScriptLoaderJs( $core_classes ) . $this->mScripts;
 184                 } else {
 185                         $so = '';
 186                         //make sure scripts are on top:
 187                         $postMscripts = $this->mScripts;
 188                         $this->mScripts = '';
 189                         foreach( $core_classes as $js_class ){
 190                                 $this->addScriptClass( $js_class );
 191                         }
 192                         $this->mScripts .= $postMscripts;
 193                 }
 194         }
 195
 196         /**
 197          * @param string $js_class Name of the JavaScript class
 198          * @return boolean False if the class wasn't found, true on success
 199          */
 200         function addScriptClass( $js_class ){
 201                 global $wgDebugJavaScript, $wgJSAutoloadLocalClasses, $wgJSAutoloadClasses,
 202                                 $wgEnableScriptLoader, $wgStyleVersion, $wgScriptPath;
 203
 204                 $path = jsScriptLoader::getJsPathFromClass( $js_class );
 205                 if( $path !== false ){
 206                         if( $wgEnableScriptLoader ) {
 207                                 // Register it with the script loader
 208                                 if( !in_array( $js_class, $this->mScriptLoaderClassList ) ) {
 209                                         $this->mScriptLoaderClassList[] = $js_class;
 210                                 }
 211                         } else {
 212                                 // Source the script directly
 213                                 $path = $wgScriptPath . '/' . $path;
 214                                 $urlAppend = ( $wgDebugJavaScript ) ? time() : $this->getURIDparam( $js_class );
 215                                 $this->addScript( Html::linkedScript( "$path?$urlAppend" ) );
 216
 217                                 //merge in language text:
 218                                 $inlineMsg = jsScriptLoader::getLocalizedMsgsFromClass( $js_class );
 219                                 if( $inlineMsg != '' )
 220                                         $this->addScript( Html::inlineScript( $inlineMsg ));
 221                         }
 222                         return true;
 223                 }
 224                 print "could not find: $js_class\n";
 225                 wfDebug( __METHOD__ . ' could not find js_class: ' . $js_class );
 226                 return false; // could not find the class
 227         }
 228
 229         /**
 230          * Get the <script> tag which will invoke the script loader
 231          * @param $classAry A class array which, if given, overrides $this->mScriptLoaderClassList
 232          */
 233         function getScriptLoaderJs( $classAry = array() ) {
 234                 global $wgRequest, $wgDebugJavaScript;
 235                 // If no class array was provided, use mScriptLoaderClassList
 236                 if( !count( $classAry ) ) {
 237                         $classAry = $this->mScriptLoaderClassList;
 238                 }
 239                 $class_list = implode( ',', $classAry );
 240
 241                 $debug_param = ( $wgDebugJavaScript ||
 242                                                  $wgRequest->getVal( 'debug' ) == 'true' ||
 243                                                  $wgRequest->getVal( 'debug' ) == '1' )
 244                                          ? '&debug=true' : '';
 245
 246                 return Html::linkedScript( wfScript( 'mwScriptLoader' ) .
 247                         "?class={$class_list}{$debug_param}&" . $this->getURIDparam( $classAry) );
 248         }
 249
 250         /**
 251          * Get the unique request ID parameter for the script-loader request
 252          */
 253         function getURIDparam( $classAry = array() ) {
 254                 global $wgDebugJavaScript, $wgStyleVersion, $IP, $wgScriptModifiedCheck;
 255                 if( $wgDebugJavaScript ) {
 256                         return 'urid=' . time();
 257                 } else {
 258                         //support single class_name attr
 259                         if( gettype( $classAry) == 'string'  ){
 260                                 $classAry = array( $classAry );
 261                         }
 262                         $ftime =  $frev = 0;
 263                         foreach( $classAry as $class ) {
 264                                 if( $wgScriptModifiedCheck ) {
 265                                         $js_path =  jsScriptLoader::getJsPathFromClass( $class );
 266                                         if( $js_path ) {
 267                                                 $cur_ftime = filemtime ( $IP ."/". $js_path );
 268                                                 if( $cur_ftime > $ftime )
 269                                                         $ftime = $cur_ftime;
 270                                         }
 271                                 }
 272                                 // Add the latest revision ID if the class set includes a WT (wiki title)
 273                                 if( substr($class, 0, 3) == 'WT:'){
 274                                         $title_str = substr($class, 3);
 275                                         $t = Title::newFromText( $title_str );
 276                                         if( $t && $t->exists() ) {
 277                                                 if( $t->getLatestRevID() > $frev  )
 278                                                         $frev = $t->getLatestRevID();
 279                                         }
 280                                 }
 281                         }
 282                         //build the actual unique request id:
 283                         $urid = "urid={$wgStyleVersion}";
 284
 285                         // Add the file modification time if set
 286                         if( $ftime != 0 )
 287                                 $urid .= "_" . $ftime;
 288
 289                         //add the wiki rev id if set
 290                         if( $frev != 0 )
 291                                 $urid.= "_" . $frev;
 292
 293                         return $urid;
 294                 }
 295         }
 296
 297         /**
 298          * Given a script path, get the JS class name, or false if no such path is registered.
 299          * @param $path string
 300          */
 301         function getJsClassFromPath( $path ) {
 302                 global $wgJSAutoloadClasses, $wgJSAutoloadLocalClasses, $wgScriptPath;
 303
 304                 $scriptLoaderPaths = array_merge( $wgJSAutoloadClasses,  $wgJSAutoloadLocalClasses );
 305                 foreach( $scriptLoaderPaths as $js_class => $js_path ) {
 306                         $js_path = "{$wgScriptPath}/{$js_path}";
 307                         if( $path == $js_path )
 308                                 return $js_class;
 309                 }
 310                 return false;
 311         }
 312
 313         /**
 314          * Add a self-contained script tag with the given contents
 315          * @param string $script JavaScript text, no <script> tags
 316          */
 317         function addInlineScript( $script ) {
 318                 $this->mScripts .= Html::inlineScript( "\n$script\n" ) . "\n";
 319         }
 320
 321         /**
 322          * Get all registered JS and CSS tags for the header.
 323          */
 324         function getScript() {
 325                 global $wgEnableScriptLoader;
 326                 if( $wgEnableScriptLoader ){
 327                         return $this->mScripts . "\n" . $this->getScriptLoaderJs() . $this->getHeadItems();
 328                 } else {
 329                         return $this->mScripts . $this->getHeadItems();
 330                 }
 331         }
 332
 333         function getHeadItems() {
 334                 $s = '';
 335                 foreach ( $this->mHeadItems as $item ) {
 336                         $s .= $item;
 337                 }
 338                 return $s;
 339         }
 340
 341         function addHeadItem( $name, $value ) {
 342                 $this->mHeadItems[$name] = $value;
 343         }
 344
 345         function hasHeadItem( $name ) {
 346                 return isset( $this->mHeadItems[$name] );
 347         }
 348
 349         function setETag($tag) { $this->mETag = $tag; }
 350         function setArticleBodyOnly($only) { $this->mArticleBodyOnly = $only; }
 351         function getArticleBodyOnly() { return $this->mArticleBodyOnly; }
 352
 353         function addLink( $linkarr ) {
 354                 # $linkarr should be an associative array of attributes. We'll escape on output.
 355                 array_push( $this->mLinktags, $linkarr );
 356         }
 357
 358         # Get all links added by extensions
 359         function getExtStyle() {
 360                 return $this->mExtStyles;
 361         }
 362
 363         function addMetadataLink( $linkarr ) {
 364                 # note: buggy CC software only reads first "meta" link
 365                 static $haveMeta = false;
 366                 $linkarr['rel'] = ($haveMeta) ? 'alternate meta' : 'meta';
 367                 $this->addLink( $linkarr );
 368                 $haveMeta = true;
 369         }
 370
 371         /**
 372          * checkLastModified tells the client to use the client-cached page if
 373          * possible. If sucessful, the OutputPage is disabled so that
 374          * any future call to OutputPage->output() have no effect.
 375          *
 376          * Side effect: sets mLastModified for Last-Modified header
 377          *
 378          * @return bool True iff cache-ok headers was sent.
 379          */
 380         function checkLastModified( $timestamp ) {
 381                 global $wgCachePages, $wgCacheEpoch, $wgUser, $wgRequest;
 382
 383                 if ( !$timestamp || $timestamp == '19700101000000' ) {
 384                         wfDebug( __METHOD__ . ": CACHE DISABLED, NO TIMESTAMP\n" );
 385                         return false;
 386                 }
 387                 if( !$wgCachePages ) {
 388                         wfDebug( __METHOD__ . ": CACHE DISABLED\n", false );
 389                         return false;
 390                 }
 391                 if( $wgUser->getOption( 'nocache' ) ) {
 392                         wfDebug( __METHOD__ . ": USER DISABLED CACHE\n", false );
 393                         return false;
 394                 }
 395
 396                 $timestamp = wfTimestamp( TS_MW, $timestamp );
 397                 $modifiedTimes = array(
 398                         'page' => $timestamp,
 399                         'user' => $wgUser->getTouched(),
 400                         'epoch' => $wgCacheEpoch
 401                 );
 402                 wfRunHooks( 'OutputPageCheckLastModified', array( &$modifiedTimes ) );
 403
 404                 $maxModified = max( $modifiedTimes );
 405                 $this->mLastModified = wfTimestamp( TS_RFC2822, $maxModified );
 406
 407                 if( empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
 408                         wfDebug( __METHOD__ . ": client did not send If-Modified-Since header\n", false );
 409                         return false;
 410                 }
 411
 412                 # Make debug info
 413                 $info = '';
 414                 foreach ( $modifiedTimes as $name => $value ) {
 415                         if ( $info !== '' ) {
 416                                 $info .= ', ';
 417                         }
 418                         $info .= "$name=" . wfTimestamp( TS_ISO_8601, $value );
 419                 }
 420
 421                 # IE sends sizes after the date like this:
 422                 # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
 423                 # this breaks strtotime().
 424                 $clientHeader = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
 425
 426                 wfSuppressWarnings(); // E_STRICT system time bitching
 427                 $clientHeaderTime = strtotime( $clientHeader );
 428                 wfRestoreWarnings();
 429                 if ( !$clientHeaderTime ) {
 430                         wfDebug( __METHOD__ . ": unable to parse the client's If-Modified-Since header: $clientHeader\n" );
 431                         return false;
 432                 }
 433                 $clientHeaderTime = wfTimestamp( TS_MW, $clientHeaderTime );
 434
 435                 wfDebug( __METHOD__ . ": client sent If-Modified-Since: " .
 436                         wfTimestamp( TS_ISO_8601, $clientHeaderTime ) . "\n", false );
 437                 wfDebug( __METHOD__ . ": effective Last-Modified: " .
 438                         wfTimestamp( TS_ISO_8601, $maxModified ) . "\n", false );
 439                 if( $clientHeaderTime < $maxModified ) {
 440                         wfDebug( __METHOD__ . ": STALE, $info\n", false );
 441                         return false;
 442                 }
 443
 444                 # Not modified
 445                 # Give a 304 response code and disable body output
 446                 wfDebug( __METHOD__ . ": NOT MODIFIED, $info\n", false );
 447                 ini_set('zlib.output_compression', 0);
 448                 $wgRequest->response()->header( "HTTP/1.1 304 Not Modified" );
 449                 $this->sendCacheControl();
 450                 $this->disable();
 451
 452                 // Don't output a compressed blob when using ob_gzhandler;
 453                 // it's technically against HTTP spec and seems to confuse
 454                 // Firefox when the response gets split over two packets.
 455                 wfClearOutputBuffers();
 456
 457                 return true;
 458         }
 459
 460         function setPageTitleActionText( $text ) {
 461                 $this->mPageTitleActionText = $text;
 462         }
 463
 464         function getPageTitleActionText () {
 465                 if ( isset( $this->mPageTitleActionText ) ) {
 466                         return $this->mPageTitleActionText;
 467                 }
 468         }
 469
 470         /**
 471          * Set the robot policy for the page: <http://www.robotstxt.org/meta.html>
 472          *
 473          * @param $policy string The literal string to output as the contents of
 474          *   the meta tag.  Will be parsed according to the spec and output in
 475          *   standardized form.
 476          * @return null
 477          */
 478         public function setRobotPolicy( $policy ) {
 479                 $policy = Article::formatRobotPolicy( $policy );
 480
 481                 if( isset( $policy['index'] ) ){
 482                         $this->setIndexPolicy( $policy['index'] );
 483                 }
 484                 if( isset( $policy['follow'] ) ){
 485                         $this->setFollowPolicy( $policy['follow'] );
 486                 }
 487         }
 488
 489         /**
 490          * Set the index policy for the page, but leave the follow policy un-
 491          * touched.
 492          *
 493          * @param $policy string Either 'index' or 'noindex'.
 494          * @return null
 495          */
 496         public function setIndexPolicy( $policy ) {
 497                 $policy = trim( $policy );
 498                 if( in_array( $policy, array( 'index', 'noindex' ) ) ) {
 499                         $this->mIndexPolicy = $policy;
 500                 }
 501         }
 502
 503         /**
 504          * Set the follow policy for the page, but leave the index policy un-
 505          * touched.
 506          *
 507          * @param $policy string Either 'follow' or 'nofollow'.
 508          * @return null
 509          */
 510         public function setFollowPolicy( $policy ) {
 511                 $policy = trim( $policy );
 512                 if( in_array( $policy, array( 'follow', 'nofollow' ) ) ) {
 513                         $this->mFollowPolicy = $policy;
 514                 }
 515         }
 516
 517         /**
 518          * "HTML title" means the contents of <title>. It is stored as plain, unescaped text and will be run through htmlspecialchars in the skin file.
 519          */
 520         public function setHTMLTitle( $name ) {
 521                 $this->mHTMLtitle = $name;
 522         }
 523
 524         /**
 525          * "Page title" means the contents of <h1>. It is stored as a valid HTML fragment.
 526          * This function allows good tags like <sup> in the <h1> tag, but not bad tags like <script>.
 527          * This function automatically sets <title> to the same content as <h1> but with all tags removed.
 528          * Bad tags that were escaped in <h1> will still be escaped in <title>, and good tags like <i> will be dropped entirely.
 529          */
 530         public function setPageTitle( $name ) {
 531                 global $wgContLang;
 532                 $name = $wgContLang->convert( $name, true );
 533                 # change "<script>foo&bar</script>" to "&lt;script&gt;foo&amp;bar&lt;/script&gt;"
 534                 # but leave "<i>foobar</i>" alone
 535                 $nameWithTags = Sanitizer::normalizeCharReferences( Sanitizer::removeHTMLtags( $name ) );
 536                 $this->mPagetitle = $nameWithTags;
 537
 538                 $taction =  $this->getPageTitleActionText();
 539                 if( !empty( $taction ) ) {
 540                         $name .= ' - '.$taction;
 541                 }
 542
 543                 # change "<i>foo&amp;bar</i>" to "foo&bar"
 544                 $this->setHTMLTitle( wfMsg( 'pagetitle', Sanitizer::stripAllTags( $nameWithTags ) ) );
 545         }
 546
 547         public function setTitle( $t ) {
 548                 $this->mTitle = $t;
 549         }
 550
 551         public function getTitle() {
 552                 if ( $this->mTitle instanceof Title ) {
 553                         return $this->mTitle;
 554                 }
 555                 else {
 556                         wfDebug( __METHOD__ . ' called and $mTitle is null. Return $wgTitle for sanity' );
 557                         global $wgTitle;
 558                         return $wgTitle;
 559                 }
 560         }
 561
 562         public function getHTMLTitle() { return $this->mHTMLtitle; }
 563         public function getPageTitle() { return $this->mPagetitle; }
 564         public function setSubtitle( $str ) { $this->mSubtitle = /*$this->parse(*/$str/*)*/; } // @bug 2514
 565         public function appendSubtitle( $str ) { $this->mSubtitle .= /*$this->parse(*/$str/*)*/; } // @bug 2514
 566         public function getSubtitle() { return $this->mSubtitle; }
 567         public function isArticle() { return $this->mIsarticle; }
 568         public function setPrintable() { $this->mPrintable = true; }
 569         public function isPrintable() { return $this->mPrintable; }
 570         public function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 571         public function isSyndicated() { return $this->mShowFeedLinks; }
 572         public function setFeedAppendQuery( $val ) { $this->mFeedLinksAppendQuery = $val; }
 573         public function getFeedAppendQuery() { return $this->mFeedLinksAppendQuery; }
 574         public function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 575         public function getOnloadHandler() { return $this->mOnloadHandler; }
 576         public function disable() { $this->mDoNothing = true; }
 577         public function isDisabled() { return $this->mDoNothing; }
 578
 579         public function setArticleRelated( $v ) {
 580                 $this->mIsArticleRelated = $v;
 581                 if ( !$v ) {
 582                         $this->mIsarticle = false;
 583                 }
 584         }
 585         public function setArticleFlag( $v ) {
 586                 $this->mIsarticle = $v;
 587                 if ( $v ) {
 588                         $this->mIsArticleRelated = $v;
 589                 }
 590         }
 591
 592         public function isArticleRelated() { return $this->mIsArticleRelated; }
 593
 594         public function getLanguageLinks() { return $this->mLanguageLinks; }
 595         public function addLanguageLinks($newLinkArray) {
 596                 $this->mLanguageLinks += $newLinkArray;
 597         }
 598         public function setLanguageLinks($newLinkArray) {
 599                 $this->mLanguageLinks = $newLinkArray;
 600         }
 601
 602         public function getCategoryLinks() {
 603                 return $this->mCategoryLinks;
 604         }
 605
 606         /**
 607          * Add an array of categories, with names in the keys
 608          */
 609         public function addCategoryLinks( $categories ) {
 610                 global $wgUser, $wgContLang;
 611
 612                 if ( !is_array( $categories ) || count( $categories ) == 0 ) {
 613                         return;
 614                 }
 615
 616                 # Add the links to a LinkBatch
 617                 $arr = array( NS_CATEGORY => $categories );
 618                 $lb = new LinkBatch;
 619                 $lb->setArray( $arr );
 620
 621                 # Fetch existence plus the hiddencat property
 622                 $dbr = wfGetDB( DB_SLAVE );
 623                 $pageTable = $dbr->tableName( 'page' );
 624                 $where = $lb->constructSet( 'page', $dbr );
 625                 $propsTable = $dbr->tableName( 'page_props' );
 626                 $sql = "SELECT page_id, page_namespace, page_title, page_len, page_is_redirect, pp_value
 627                         FROM $pageTable LEFT JOIN $propsTable ON pp_propname='hiddencat' AND pp_page=page_id WHERE $where";
 628                 $res = $dbr->query( $sql, __METHOD__ );
 629
 630                 # Add the results to the link cache
 631                 $lb->addResultToCache( LinkCache::singleton(), $res );
 632
 633                 # Set all the values to 'normal'. This can be done with array_fill_keys in PHP 5.2.0+
 634                 $categories = array_combine( array_keys( $categories ),
 635                         array_fill( 0, count( $categories ), 'normal' ) );
 636
 637                 # Mark hidden categories
 638                 foreach ( $res as $row ) {
 639                         if ( isset( $row->pp_value ) ) {
 640                                 $categories[$row->page_title] = 'hidden';
 641                         }
 642                 }
 643
 644                 # Add the remaining categories to the skin
 645                 if ( wfRunHooks( 'OutputPageMakeCategoryLinks', array( &$this, $categories, &$this->mCategoryLinks ) ) ) {
 646                         $sk = $wgUser->getSkin();
 647                         foreach ( $categories as $category => $type ) {
 648                                 $origcategory = $category;
 649                                 $title = Title::makeTitleSafe( NS_CATEGORY, $category );
 650                                 $wgContLang->findVariantLink( $category, $title, true );
 651                                 if ( $category != $origcategory )
 652                                         if ( array_key_exists( $category, $categories ) )
 653                                                 continue;
 654                                 $text = $wgContLang->convertHtml( $title->getText() );
 655                                 $this->mCategoryLinks[$type][] = $sk->link( $title, $text );
 656                         }
 657                 }
 658         }
 659
 660         public function setCategoryLinks($categories) {
 661                 $this->mCategoryLinks = array();
 662                 $this->addCategoryLinks($categories);
 663         }
 664
 665         public function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 666         public function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 667
 668         public function disallowUserJs() { $this->mAllowUserJs = false; }
 669         public function isUserJsAllowed() { return $this->mAllowUserJs; }
 670
 671         public function prependHTML( $text ) { $this->mBodytext = $text . $this->mBodytext; }
 672         public function addHTML( $text ) { $this->mBodytext .= $text; }
 673         public function clearHTML() { $this->mBodytext = ''; }
 674         public function getHTML() { return $this->mBodytext; }
 675         public function debug( $text ) { $this->mDebugtext .= $text; }
 676
 677         /* @deprecated */
 678         public function setParserOptions( $options ) {
 679                 wfDeprecated( __METHOD__ );
 680                 return $this->parserOptions( $options );
 681         }
 682
 683         public function parserOptions( $options = null ) {
 684                 if ( !$this->mParserOptions ) {
 685                         $this->mParserOptions = new ParserOptions;
 686                 }
 687                 return wfSetVar( $this->mParserOptions, $options );
 688         }
 689
 690         /**
 691          * Set the revision ID which will be seen by the wiki text parser
 692          * for things such as embedded {{REVISIONID}} variable use.
 693          * @param mixed $revid an integer, or NULL
 694          * @return mixed previous value
 695          */
 696         public function setRevisionId( $revid ) {
 697                 $val = is_null( $revid ) ? null : intval( $revid );
 698                 return wfSetVar( $this->mRevisionId, $val );
 699         }
 700
 701         public function getRevisionId() {
 702                 return $this->mRevisionId;
 703         }
 704
 705         /**
 706          * Convert wikitext to HTML and add it to the buffer
 707          * Default assumes that the current page title will
 708          * be used.
 709          *
 710          * @param string $text
 711          * @param bool   $linestart
 712          */
 713         public function addWikiText( $text, $linestart = true ) {
 714                 $title = $this->getTitle(); // Work arround E_STRICT
 715                 $this->addWikiTextTitle( $text, $title, $linestart );
 716         }
 717
 718         public function addWikiTextWithTitle($text, &$title, $linestart = true) {
 719                 $this->addWikiTextTitle($text, $title, $linestart);
 720         }
 721
 722         function addWikiTextTitleTidy($text, &$title, $linestart = true) {
 723                 $this->addWikiTextTitle( $text, $title, $linestart, true );
 724         }
 725
 726         public function addWikiTextTitle($text, &$title, $linestart, $tidy = false) {
 727                 global $wgParser;
 728
 729                 wfProfileIn( __METHOD__ );
 730
 731                 wfIncrStats( 'pcache_not_possible' );
 732
 733                 $popts = $this->parserOptions();
 734                 $oldTidy = $popts->setTidy( $tidy );
 735
 736                 $parserOutput = $wgParser->parse( $text, $title, $popts,
 737                         $linestart, true, $this->mRevisionId );
 738
 739                 $popts->setTidy( $oldTidy );
 740
 741                 $this->addParserOutput( $parserOutput );
 742
 743                 wfProfileOut( __METHOD__ );
 744         }
 745
 746         /**
 747          * @todo document
 748          * @param ParserOutput object &$parserOutput
 749          */
 750         public function addParserOutputNoText( &$parserOutput ) {
 751                 global $wgExemptFromUserRobotsControl, $wgContentNamespaces;
 752
 753                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 754                 $this->addCategoryLinks( $parserOutput->getCategories() );
 755                 $this->mNewSectionLink = $parserOutput->getNewSection();
 756                 $this->mHideNewSectionLink = $parserOutput->getHideNewSection();
 757
 758                 $this->mParseWarnings = $parserOutput->getWarnings();
 759                 if ( $parserOutput->getCacheTime() == -1 ) {
 760                         $this->enableClientCache( false );
 761                 }
 762                 $this->mNoGallery = $parserOutput->getNoGallery();
 763                 $this->mHeadItems = array_merge( $this->mHeadItems, (array)$parserOutput->mHeadItems );
 764                 // Versioning...
 765                 foreach ( (array)$parserOutput->mTemplateIds as $ns => $dbks ) {
 766                         if ( isset( $this->mTemplateIds[$ns] ) ) {
 767                                 $this->mTemplateIds[$ns] = $dbks + $this->mTemplateIds[$ns];
 768                         } else {
 769                                 $this->mTemplateIds[$ns] = $dbks;
 770                         }
 771                 }
 772                 // Page title
 773                 if( ( $dt = $parserOutput->getDisplayTitle() ) !== false )
 774                         $this->setPageTitle( $dt );
 775                 else if ( ( $title = $parserOutput->getTitleText() ) != '' )
 776                         $this->setPageTitle( $title );
 777
 778                 // Hooks registered in the object
 779                 global $wgParserOutputHooks;
 780                 foreach ( $parserOutput->getOutputHooks() as $hookInfo ) {
 781                         list( $hookName, $data ) = $hookInfo;
 782                         if ( isset( $wgParserOutputHooks[$hookName] ) ) {
 783                                 call_user_func( $wgParserOutputHooks[$hookName], $this, $parserOutput, $data );
 784                         }
 785                 }
 786
 787                 wfRunHooks( 'OutputPageParserOutput', array( &$this, $parserOutput ) );
 788         }
 789
 790         /**
 791          * @todo document
 792          * @param ParserOutput &$parserOutput
 793          */
 794         function addParserOutput( &$parserOutput ) {
 795                 $this->addParserOutputNoText( $parserOutput );
 796                 $text = $parserOutput->getText();
 797                 wfRunHooks( 'OutputPageBeforeHTML',array( &$this, &$text ) );
 798                 $this->addHTML( $text );
 799         }
 800
 801         /**
 802          * Add wikitext to the buffer, assuming that this is the primary text for a page view
 803          * Saves the text into the parser cache if possible.
 804          *
 805          * @param string  $text
 806          * @param Article $article
 807          * @param bool    $cache
 808          * @deprecated Use Article::outputWikitext
 809          */
 810         public function addPrimaryWikiText( $text, $article, $cache = true ) {
 811                 global $wgParser;
 812
 813                 wfDeprecated( __METHOD__ );
 814
 815                 $popts = $this->parserOptions();
 816                 $popts->setTidy(true);
 817                 $parserOutput = $wgParser->parse( $text, $article->mTitle,
 818                         $popts, true, true, $this->mRevisionId );
 819                 $popts->setTidy(false);
 820                 if ( $cache && $article && $parserOutput->getCacheTime() != -1 ) {
 821                         $parserCache = ParserCache::singleton();
 822                         $parserCache->save( $parserOutput, $article, $popts);
 823                 }
 824
 825                 $this->addParserOutput( $parserOutput );
 826         }
 827
 828         /**
 829          * @deprecated use addWikiTextTidy()
 830          */
 831         public function addSecondaryWikiText( $text, $linestart = true ) {
 832                 wfDeprecated( __METHOD__ );
 833                 $this->addWikiTextTitleTidy($text, $this->getTitle(), $linestart);
 834         }
 835
 836         /**
 837          * Add wikitext with tidy enabled
 838          */
 839         public function addWikiTextTidy(  $text, $linestart = true ) {
 840                 $title = $this->getTitle();
 841                 $this->addWikiTextTitleTidy($text, $title, $linestart);
 842         }
 843
 844
 845         /**
 846          * Add the output of a QuickTemplate to the output buffer
 847          *
 848          * @param QuickTemplate $template
 849          */
 850         public function addTemplate( &$template ) {
 851                 ob_start();
 852                 $template->execute();
 853                 $this->addHTML( ob_get_contents() );
 854                 ob_end_clean();
 855         }
 856
 857         /**
 858          * Parse wikitext and return the HTML.
 859          *
 860          * @param string $text
 861          * @param bool   $linestart Is this the start of a line?
 862          * @param bool   $interface ??
 863          */
 864         public function parse( $text, $linestart = true, $interface = false ) {
 865                 global $wgParser;
 866                 if( is_null( $this->getTitle() ) ) {
 867                         throw new MWException( 'Empty $mTitle in ' . __METHOD__ );
 868                 }
 869                 $popts = $this->parserOptions();
 870                 if ( $interface) { $popts->setInterfaceMessage(true); }
 871                 $parserOutput = $wgParser->parse( $text, $this->getTitle(), $popts,
 872                         $linestart, true, $this->mRevisionId );
 873                 if ( $interface) { $popts->setInterfaceMessage(false); }
 874                 return $parserOutput->getText();
 875         }
 876
 877         /** Parse wikitext, strip paragraphs, and return the HTML. */
 878         public function parseInline( $text, $linestart = true, $interface = false ) {
 879                 $parsed = $this->parse( $text, $linestart, $interface );
 880
 881                 $m = array();
 882                 if ( preg_match( '/^<p>(.*)\n?<\/p>\n?/sU', $parsed, $m ) ) {
 883                         $parsed = $m[1];
 884                 }
 885
 886                 return $parsed;
 887         }
 888
 889         /**
 890          * @param Article $article
 891          * @param User    $user
 892          *
 893          * @deprecated
 894          *
 895          * @return bool True if successful, else false.
 896          */
 897         public function tryParserCache( &$article ) {
 898                 wfDeprecated( __METHOD__ );
 899                 $parserOutput = ParserCache::singleton()->get( $article, $article->getParserOptions() );
 900
 901                 if ($parserOutput !== false) {
 902                         $this->addParserOutput( $parserOutput );
 903                         return true;
 904                 } else {
 905                         return false;
 906                 }
 907         }
 908
 909         /**
 910          * @param int $maxage Maximum cache time on the Squid, in seconds.
 911          */
 912         public function setSquidMaxage( $maxage ) {
 913                 $this->mSquidMaxage = $maxage;
 914         }
 915
 916         /**
 917          * Use enableClientCache(false) to force it to send nocache headers
 918          * @param $state ??
 919          */
 920         public function enableClientCache( $state ) {
 921                 return wfSetVar( $this->mEnableClientCache, $state );
 922         }
 923
 924         function getCacheVaryCookies() {
 925                 global $wgCookiePrefix, $wgCacheVaryCookies;
 926                 static $cookies;
 927                 if ( $cookies === null ) {
 928                         $cookies = array_merge(
 929                                 array(
 930                                         "{$wgCookiePrefix}Token",
 931                                         "{$wgCookiePrefix}LoggedOut",
 932                                         session_name()
 933                                 ),
 934                                 $wgCacheVaryCookies
 935                         );
 936                         wfRunHooks('GetCacheVaryCookies', array( $this, &$cookies ) );
 937                 }
 938                 return $cookies;
 939         }
 940
 941         function uncacheableBecauseRequestVars() {
 942                 global $wgRequest;
 943                 return  $wgRequest->getText('useskin', false) === false
 944                         && $wgRequest->getText('uselang', false) === false;
 945         }
 946
 947         /**
 948          * Check if the request has a cache-varying cookie header
 949          * If it does, it's very important that we don't allow public caching
 950          */
 951         function haveCacheVaryCookies() {
 952                 global $wgRequest;
 953                 $cookieHeader = $wgRequest->getHeader( 'cookie' );
 954                 if ( $cookieHeader === false ) {
 955                         return false;
 956                 }
 957                 $cvCookies = $this->getCacheVaryCookies();
 958                 foreach ( $cvCookies as $cookieName ) {
 959                         # Check for a simple string match, like the way squid does it
 960                         if ( strpos( $cookieHeader, $cookieName ) ) {
 961                                 wfDebug( __METHOD__.": found $cookieName\n" );
 962                                 return true;
 963                         }
 964                 }
 965                 wfDebug( __METHOD__.": no cache-varying cookies found\n" );
 966                 return false;
 967         }
 968
 969         /** Get a complete X-Vary-Options header */
 970         public function getXVO() {
 971                 $cvCookies = $this->getCacheVaryCookies();
 972                 $xvo = 'X-Vary-Options: Accept-Encoding;list-contains=gzip,Cookie;';
 973                 $first = true;
 974                 foreach ( $cvCookies as $cookieName ) {
 975                         if ( $first ) {
 976                                 $first = false;
 977                         } else {
 978                                 $xvo .= ';';
 979                         }
 980                         $xvo .= 'string-contains=' . $cookieName;
 981                 }
 982                 return $xvo;
 983         }
 984
 985         public function sendCacheControl() {
 986                 global $wgUseSquid, $wgUseESI, $wgUseETag, $wgSquidMaxage, $wgRequest, $wgUseXVO;
 987
 988                 $response = $wgRequest->response();
 989                 if ($wgUseETag && $this->mETag)
 990                         $response->header("ETag: $this->mETag");
 991
 992                 # don't serve compressed data to clients who can't handle it
 993                 # maintain different caches for logged-in users and non-logged in ones
 994                 $response->header( 'Vary: Accept-Encoding, Cookie' );
 995
 996                 if ( $wgUseXVO ) {
 997                         # Add an X-Vary-Options header for Squid with Wikimedia patches
 998                         $response->header( $this->getXVO() );
 999                 }
1000
1001                 if( !$this->uncacheableBecauseRequestVars() && $this->mEnableClientCache ) {
1002                         if( $wgUseSquid && session_id() == '' &&
1003                           ! $this->isPrintable() && $this->mSquidMaxage != 0 && !$this->haveCacheVaryCookies() )
1004                         {
1005                                 if ( $wgUseESI ) {
1006                                         # We'll purge the proxy cache explicitly, but require end user agents
1007                                         # to revalidate against the proxy on each visit.
1008                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
1009                                         wfDebug( __METHOD__ . ": proxy caching with ESI; {$this->mLastModified} **\n", false );
1010                                         # start with a shorter timeout for initial testing
1011                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
1012                                         $response->header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
1013                                         $response->header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
1014                                 } else {
1015                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
1016                                         # to revalidate against the proxy on each visit.
1017                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
1018                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
1019                                         wfDebug( __METHOD__ . ": local proxy caching; {$this->mLastModified} **\n", false );
1020                                         # start with a shorter timeout for initial testing
1021                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
1022                                         $response->header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
1023                                 }
1024                         } else {
1025                                 # We do want clients to cache if they can, but they *must* check for updates
1026                                 # on revisiting the page.
1027                                 wfDebug( __METHOD__ . ": private caching; {$this->mLastModified} **\n", false );
1028                                 $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1029                                 $response->header( "Cache-Control: private, must-revalidate, max-age=0" );
1030                         }
1031                         if($this->mLastModified) {
1032                                 $response->header( "Last-Modified: {$this->mLastModified}" );
1033                         }
1034                 } else {
1035                         wfDebug( __METHOD__ . ": no caching **\n", false );
1036
1037                         # In general, the absence of a last modified header should be enough to prevent
1038                         # the client from using its cache. We send a few other things just to make sure.
1039                         $response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
1040                         $response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
1041                         $response->header( 'Pragma: no-cache' );
1042                 }
1043         }
1044
1045         /**
1046          * Finally, all the text has been munged and accumulated into
1047          * the object, let's actually output it:
1048          */
1049         public function output() {
1050                 global $wgUser, $wgOutputEncoding, $wgRequest;
1051                 global $wgContLanguageCode, $wgDebugRedirects, $wgMimeType;
1052                 global $wgUseAjax, $wgAjaxWatch;
1053                 global $wgEnableMWSuggest, $wgUniversalEditButton;
1054                 global $wgArticle;
1055
1056                 if( $this->mDoNothing ){
1057                         return;
1058                 }
1059                 wfProfileIn( __METHOD__ );
1060                 if ( '' != $this->mRedirect ) {
1061                         # Standards require redirect URLs to be absolute
1062                         $this->mRedirect = wfExpandUrl( $this->mRedirect );
1063                         if( $this->mRedirectCode == '301') {
1064                                 if( !$wgDebugRedirects ) {
1065                                         $wgRequest->response()->header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
1066                                 }
1067                                 $this->mLastModified = wfTimestamp( TS_RFC2822 );
1068                         }
1069                         $this->sendCacheControl();
1070
1071                         $wgRequest->response()->header("Content-Type: text/html; charset=utf-8");
1072                         if( $wgDebugRedirects ) {
1073                                 $url = htmlspecialchars( $this->mRedirect );
1074                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
1075                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
1076                                 print "</body>\n</html>\n";
1077                         } else {
1078                                 $wgRequest->response()->header( 'Location: '.$this->mRedirect );
1079                         }
1080                         wfProfileOut( __METHOD__ );
1081                         return;
1082                 }
1083                 elseif ( $this->mStatusCode )
1084                 {
1085                         $statusMessage = array(
1086                                 100 => 'Continue',
1087                                 101 => 'Switching Protocols',
1088                                 102 => 'Processing',
1089                                 200 => 'OK',
1090                                 201 => 'Created',
1091                                 202 => 'Accepted',
1092                                 203 => 'Non-Authoritative Information',
1093                                 204 => 'No Content',
1094                                 205 => 'Reset Content',
1095                                 206 => 'Partial Content',
1096                                 207 => 'Multi-Status',
1097                                 300 => 'Multiple Choices',
1098                                 301 => 'Moved Permanently',
1099                                 302 => 'Found',
1100                                 303 => 'See Other',
1101                                 304 => 'Not Modified',
1102                                 305 => 'Use Proxy',
1103                                 307 => 'Temporary Redirect',
1104                                 400 => 'Bad Request',
1105                                 401 => 'Unauthorized',
1106                                 402 => 'Payment Required',
1107                                 403 => 'Forbidden',
1108                                 404 => 'Not Found',
1109                                 405 => 'Method Not Allowed',
1110                                 406 => 'Not Acceptable',
1111                                 407 => 'Proxy Authentication Required',
1112                                 408 => 'Request Timeout',
1113                                 409 => 'Conflict',
1114                                 410 => 'Gone',
1115                                 411 => 'Length Required',
1116                                 412 => 'Precondition Failed',
1117                                 413 => 'Request Entity Too Large',
1118                                 414 => 'Request-URI Too Large',
1119                                 415 => 'Unsupported Media Type',
1120                                 416 => 'Request Range Not Satisfiable',
1121                                 417 => 'Expectation Failed',
1122                                 422 => 'Unprocessable Entity',
1123                                 423 => 'Locked',
1124                                 424 => 'Failed Dependency',
1125                                 500 => 'Internal Server Error',
1126                                 501 => 'Not Implemented',
1127                                 502 => 'Bad Gateway',
1128                                 503 => 'Service Unavailable',
1129                                 504 => 'Gateway Timeout',
1130                                 505 => 'HTTP Version Not Supported',
1131                                 507 => 'Insufficient Storage'
1132                         );
1133
1134                         if ( $statusMessage[$this->mStatusCode] )
1135                                 $wgRequest->response()->header( 'HTTP/1.1 ' . $this->mStatusCode . ' ' . $statusMessage[$this->mStatusCode] );
1136                 }
1137
1138                 $sk = $wgUser->getSkin();
1139
1140                 // Add our core scripts to output
1141                 $this->addCoreScripts2Top();
1142
1143                 if ( $wgUseAjax ) {
1144                         $this->addScriptFile( 'ajax.js' );
1145
1146                         wfRunHooks( 'AjaxAddScript', array( &$this ) );
1147
1148                         if( $wgAjaxWatch && $wgUser->isLoggedIn() ) {
1149                                 $this->addScriptFile( 'ajaxwatch.js' );
1150                         }
1151
1152                         if ( $wgEnableMWSuggest && !$wgUser->getOption( 'disablesuggest', false ) ){
1153                                 $this->addScriptFile( 'mwsuggest.js' );
1154                         }
1155                 }
1156
1157                 if( $wgUser->getBoolOption( 'editsectiononrightclick' ) ) {
1158                         $this->addScriptFile( 'rightclickedit.js' );
1159                 }
1160
1161                 global $wgUseAJAXCategories;
1162                 if ($wgUseAJAXCategories) {
1163                         $this->addScriptClass( 'ajaxCategories' );
1164                 }
1165
1166                 if( $wgUniversalEditButton ) {
1167                         if( isset( $wgArticle ) && $this->getTitle() && $this->getTitle()->quickUserCan( 'edit' )
1168                                 && ( $this->getTitle()->exists() || $this->getTitle()->quickUserCan( 'create' ) ) ) {
1169                                 // Original UniversalEditButton
1170                                 $msg = wfMsg('edit');
1171                                 $this->addLink( array(
1172                                         'rel' => 'alternate',
1173                                         'type' => 'application/x-wiki',
1174                                         'title' => $msg,
1175                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1176                                 ) );
1177                                 // Alternate edit link
1178                                 $this->addLink( array(
1179                                         'rel' => 'edit',
1180                                         'title' => $msg,
1181                                         'href' => $this->getTitle()->getLocalURL( 'action=edit' )
1182                                 ) );
1183                         }
1184                 }
1185
1186                 # Buffer output; final headers may depend on later processing
1187                 ob_start();
1188
1189                 $wgRequest->response()->header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
1190                 $wgRequest->response()->header( 'Content-language: '.$wgContLanguageCode );
1191
1192                 if ($this->mArticleBodyOnly) {
1193                         $this->out($this->mBodytext);
1194                 } else {
1195                         // Hook that allows last minute changes to the output page, e.g.
1196                         // adding of CSS or Javascript by extensions.
1197                         wfRunHooks( 'BeforePageDisplay', array( &$this, &$sk ) );
1198
1199                         wfProfileIn( 'Output-skin' );
1200                         $sk->outputPage( $this );
1201                         wfProfileOut( 'Output-skin' );
1202                 }
1203
1204                 $this->sendCacheControl();
1205                 ob_end_flush();
1206                 wfProfileOut( __METHOD__ );
1207         }
1208
1209         /**
1210          * Actually output something with print(). Performs an iconv to the
1211          * output encoding, if needed.
1212          * @param string $ins The string to output
1213          */
1214         public function out( $ins ) {
1215                 global $wgInputEncoding, $wgOutputEncoding, $wgContLang;
1216                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
1217                         $outs = $ins;
1218                 } else {
1219                         $outs = $wgContLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
1220                         if ( false === $outs ) { $outs = $ins; }
1221                 }
1222                 print $outs;
1223         }
1224
1225         /**
1226          * @todo document
1227          */
1228         public static function setEncodings() {
1229                 global $wgInputEncoding, $wgOutputEncoding;
1230                 global $wgContLang;
1231
1232                 $wgInputEncoding = strtolower( $wgInputEncoding );
1233
1234                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
1235                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
1236                         return;
1237                 }
1238                 $wgOutputEncoding = $wgInputEncoding;
1239         }
1240
1241         /**
1242          * Deprecated, use wfReportTime() instead.
1243          * @return string
1244          * @deprecated
1245          */
1246         public function reportTime() {
1247                 wfDeprecated( __METHOD__ );
1248                 $time = wfReportTime();
1249                 return $time;
1250         }
1251
1252         /**
1253          * Produce a "user is blocked" page.
1254          *
1255          * @param bool $return Whether to have a "return to $wgTitle" message or not.
1256          * @return nothing
1257          */
1258         function blockedPage( $return = true ) {
1259                 global $wgUser, $wgContLang, $wgLang;
1260
1261                 $this->setPageTitle( wfMsg( 'blockedtitle' ) );
1262                 $this->setRobotPolicy( 'noindex,nofollow' );
1263                 $this->setArticleRelated( false );
1264
1265                 $name = User::whoIs( $wgUser->blockedBy() );
1266                 $reason = $wgUser->blockedFor();
1267                 if( $reason == '' ) {
1268                         $reason = wfMsg( 'blockednoreason' );
1269                 }
1270                 $blockTimestamp = $wgLang->timeanddate( wfTimestamp( TS_MW, $wgUser->mBlock->mTimestamp ), true );
1271                 $ip = wfGetIP();
1272
1273                 $link = '[[' . $wgContLang->getNsText( NS_USER ) . ":{$name}|{$name}]]";
1274
1275                 $blockid = $wgUser->mBlock->mId;
1276
1277                 $blockExpiry = $wgUser->mBlock->mExpiry;
1278                 if ( $blockExpiry == 'infinity' ) {
1279                         // Entry in database (table ipblocks) is 'infinity' but 'ipboptions' uses 'infinite' or 'indefinite'
1280                         // Search for localization in 'ipboptions'
1281                         $scBlockExpiryOptions = wfMsg( 'ipboptions' );
1282                         foreach ( explode( ',', $scBlockExpiryOptions ) as $option ) {
1283                                 if ( strpos( $option, ":" ) === false )
1284                                         continue;
1285                                 list( $show, $value ) = explode( ":", $option );
1286                                 if ( $value == 'infinite' || $value == 'indefinite' ) {
1287                                         $blockExpiry = $show;
1288                                         break;
1289                                 }
1290                         }
1291                 } else {
1292                         $blockExpiry = $wgLang->timeanddate( wfTimestamp( TS_MW, $blockExpiry ), true );
1293                 }
1294
1295                 if ( $wgUser->mBlock->mAuto ) {
1296                         $msg = 'autoblockedtext';
1297                 } else {
1298                         $msg = 'blockedtext';
1299                 }
1300
1301                 /* $ip returns who *is* being blocked, $intended contains who was meant to be blocked.
1302                  * This could be a username, an ip range, or a single ip. */
1303                 $intended = $wgUser->mBlock->mAddress;
1304
1305                 $this->addWikiMsg( $msg, $link, $reason, $ip, $name, $blockid, $blockExpiry, $intended, $blockTimestamp );
1306
1307                 # Don't auto-return to special pages
1308                 if( $return ) {
1309                         $return = $this->getTitle()->getNamespace() > -1 ? $this->getTitle() : null;
1310                         $this->returnToMain( null, $return );
1311                 }
1312         }
1313
1314         /**
1315          * Output a standard error page
1316          *
1317          * @param string $title Message key for page title
1318          * @param string $msg Message key for page text
1319          * @param array $params Message parameters
1320          */
1321         public function showErrorPage( $title, $msg, $params = array() ) {
1322                 if ( $this->getTitle() ) {
1323                         $this->mDebugtext .= 'Original title: ' . $this->getTitle()->getPrefixedText() . "\n";
1324                 }
1325                 $this->setPageTitle( wfMsg( $title ) );
1326                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1327                 $this->setRobotPolicy( 'noindex,nofollow' );
1328                 $this->setArticleRelated( false );
1329                 $this->enableClientCache( false );
1330                 $this->mRedirect = '';
1331                 $this->mBodytext = '';
1332
1333                 array_unshift( $params, 'parse' );
1334                 array_unshift( $params, $msg );
1335                 $this->addHTML( call_user_func_array( 'wfMsgExt', $params ) );
1336
1337                 $this->returnToMain();
1338         }
1339
1340         /**
1341          * Output a standard permission error page
1342          *
1343          * @param array $errors Error message keys
1344          */
1345         public function showPermissionsErrorPage( $errors, $action = null )
1346         {
1347                 $this->mDebugtext .= 'Original title: ' .
1348                 $this->getTitle()->getPrefixedText() . "\n";
1349                 $this->setPageTitle( wfMsg( 'permissionserrors' ) );
1350                 $this->setHTMLTitle( wfMsg( 'permissionserrors' ) );
1351                 $this->setRobotPolicy( 'noindex,nofollow' );
1352                 $this->setArticleRelated( false );
1353                 $this->enableClientCache( false );
1354                 $this->mRedirect = '';
1355                 $this->mBodytext = '';
1356                 $this->addWikiText( $this->formatPermissionsErrorMessage( $errors, $action ) );
1357         }
1358
1359         /** @deprecated */
1360         public function errorpage( $title, $msg ) {
1361                 wfDeprecated( __METHOD__ );
1362                 throw new ErrorPageError( $title, $msg );
1363         }
1364
1365         /**
1366          * Display an error page indicating that a given version of MediaWiki is
1367          * required to use it
1368          *
1369          * @param mixed $version The version of MediaWiki needed to use the page
1370          */
1371         public function versionRequired( $version ) {
1372                 $this->setPageTitle( wfMsg( 'versionrequired', $version ) );
1373                 $this->setHTMLTitle( wfMsg( 'versionrequired', $version ) );
1374                 $this->setRobotPolicy( 'noindex,nofollow' );
1375                 $this->setArticleRelated( false );
1376                 $this->mBodytext = '';
1377
1378                 $this->addWikiMsg( 'versionrequiredtext', $version );
1379                 $this->returnToMain();
1380         }
1381
1382         /**
1383          * Display an error page noting that a given permission bit is required.
1384          *
1385          * @param string $permission key required
1386          */
1387         public function permissionRequired( $permission ) {
1388                 global $wgLang;
1389
1390                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1391                 $this->setHTMLTitle( wfMsg( 'errorpagetitle' ) );
1392                 $this->setRobotPolicy( 'noindex,nofollow' );
1393                 $this->setArticleRelated( false );
1394                 $this->mBodytext = '';
1395
1396                 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
1397                         User::getGroupsWithPermission( $permission ) );
1398                 if( $groups ) {
1399                         $this->addWikiMsg( 'badaccess-groups',
1400                                 $wgLang->commaList( $groups ),
1401                                 count( $groups) );
1402                 } else {
1403                         $this->addWikiMsg( 'badaccess-group0' );
1404                 }
1405                 $this->returnToMain();
1406         }
1407
1408         /**
1409          * Use permissionRequired.
1410          * @deprecated
1411          */
1412         public function sysopRequired() {
1413                 throw new MWException( "Call to deprecated OutputPage::sysopRequired() method\n" );
1414         }
1415
1416         /**
1417          * Use permissionRequired.
1418          * @deprecated
1419          */
1420         public function developerRequired() {
1421                 throw new MWException( "Call to deprecated OutputPage::developerRequired() method\n" );
1422         }
1423
1424         /**
1425          * Produce the stock "please login to use the wiki" page
1426          */
1427         public function loginToUse() {
1428                 global $wgUser, $wgContLang;
1429
1430                 if( $wgUser->isLoggedIn() ) {
1431                         $this->permissionRequired( 'read' );
1432                         return;
1433                 }
1434
1435                 $skin = $wgUser->getSkin();
1436
1437                 $this->setPageTitle( wfMsg( 'loginreqtitle' ) );
1438                 $this->setHtmlTitle( wfMsg( 'errorpagetitle' ) );
1439                 $this->setRobotPolicy( 'noindex,nofollow' );
1440                 $this->setArticleFlag( false );
1441
1442                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1443                 $loginLink = $skin->link(
1444                         $loginTitle,
1445                         wfMsgHtml( 'loginreqlink' ),
1446                         array(),
1447                         array( 'returnto' => $this->getTitle()->getPrefixedText() ),
1448                         array( 'known', 'noclasses' )
1449                 );
1450                 $this->addHTML( wfMsgWikiHtml( 'loginreqpagetext', $loginLink ) );
1451                 $this->addHTML( "\n<!--" . $this->getTitle()->getPrefixedUrl() . "-->" );
1452
1453                 # Don't return to the main page if the user can't read it
1454                 # otherwise we'll end up in a pointless loop
1455                 $mainPage = Title::newMainPage();
1456                 if( $mainPage->userCanRead() )
1457                         $this->returnToMain( null, $mainPage );
1458         }
1459
1460         /** @deprecated */
1461         public function databaseError( $fname, $sql, $error, $errno ) {
1462                 throw new MWException( "OutputPage::databaseError is obsolete\n" );
1463         }
1464
1465         /**
1466          * @param array $errors An array of arrays returned by Title::getUserPermissionsErrors
1467          * @return string The wikitext error-messages, formatted into a list.
1468          */
1469         public function formatPermissionsErrorMessage( $errors, $action = null ) {
1470                 if ($action == null) {
1471                         $text = wfMsgNoTrans( 'permissionserrorstext', count($errors)). "\n\n";
1472                 } else {
1473                         global $wgLang;
1474                         $action_desc = wfMsgNoTrans( "action-$action" );
1475                         $text = wfMsgNoTrans( 'permissionserrorstext-withaction', count($errors), $action_desc ) . "\n\n";
1476                 }
1477
1478                 if (count( $errors ) > 1) {
1479                         $text .= '<ul class="permissions-errors">' . "\n";
1480
1481                         foreach( $errors as $error )
1482                         {
1483                                 $text .= '<li>';
1484                                 $text .= call_user_func_array( 'wfMsgNoTrans', $error );
1485                                 $text .= "</li>\n";
1486                         }
1487                         $text .= '</ul>';
1488                 } else {
1489                         $text .= "<div class=\"permissions-errors\">\n" . call_user_func_array( 'wfMsgNoTrans', reset( $errors ) ) . "\n</div>";
1490                 }
1491
1492                 return $text;
1493         }
1494
1495         /**
1496          * Display a page stating that the Wiki is in read-only mode,
1497          * and optionally show the source of the page that the user
1498          * was trying to edit.  Should only be called (for this
1499          * purpose) after wfReadOnly() has returned true.
1500          *
1501          * For historical reasons, this function is _also_ used to
1502          * show the error message when a user tries to edit a page
1503          * they are not allowed to edit.  (Unless it's because they're
1504          * blocked, then we show blockedPage() instead.)  In this
1505          * case, the second parameter should be set to true and a list
1506          * of reasons supplied as the third parameter.
1507          *
1508          * @todo Needs to be split into multiple functions.
1509          *
1510          * @param string $source    Source code to show (or null).
1511          * @param bool   $protected Is this a permissions error?
1512          * @param array  $reasons   List of reasons for this error, as returned by Title::getUserPermissionsErrors().
1513          */
1514         public function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
1515                 global $wgUser;
1516                 $skin = $wgUser->getSkin();
1517
1518                 $this->setRobotPolicy( 'noindex,nofollow' );
1519                 $this->setArticleRelated( false );
1520
1521                 // If no reason is given, just supply a default "I can't let you do
1522                 // that, Dave" message.  Should only occur if called by legacy code.
1523                 if ( $protected && empty($reasons) ) {
1524                         $reasons[] = array( 'badaccess-group0' );
1525                 }
1526
1527                 if ( !empty($reasons) ) {
1528                         // Permissions error
1529                         if( $source ) {
1530                                 $this->setPageTitle( wfMsg( 'viewsource' ) );
1531                                 $this->setSubtitle(
1532                                         wfMsg(
1533                                                 'viewsourcefor',
1534                                                 $skin->link(
1535                                                         $this->getTitle(),
1536                                                         null,
1537                                                         array(),
1538                                                         array(),
1539                                                         array( 'known', 'noclasses' )
1540                                                 )
1541                                         )
1542                                 );
1543                         } else {
1544                                 $this->setPageTitle( wfMsg( 'badaccess' ) );
1545                         }
1546                         $this->addWikiText( $this->formatPermissionsErrorMessage( $reasons, $action ) );
1547                 } else {
1548                         // Wiki is read only
1549                         $this->setPageTitle( wfMsg( 'readonly' ) );
1550                         $reason = wfReadOnlyReason();
1551                         $this->wrapWikiMsg( '<div class="mw-readonly-error">$1</div>', array( 'readonlytext', $reason ) );
1552                 }
1553
1554                 // Show source, if supplied
1555                 if( is_string( $source ) ) {
1556                         $this->addWikiMsg( 'viewsourcetext' );
1557                         $text = Xml::openElement( 'textarea',
1558                                                 array( 'id'   => 'wpTextbox1',
1559                                                        'name' => 'wpTextbox1',
1560                                                        'cols' => $wgUser->getOption( 'cols' ),
1561                                                        'rows' => $wgUser->getOption( 'rows' ),
1562                                                        'readonly' => 'readonly' ) );
1563                         $text .= htmlspecialchars( $source );
1564                         $text .= Xml::closeElement( 'textarea' );
1565                         $this->addHTML( $text );
1566
1567                         // Show templates used by this article
1568                         $skin = $wgUser->getSkin();
1569                         $article = new Article( $this->getTitle() );
1570                         $this->addHTML( "<div class='templatesUsed'>
1571 {$skin->formatTemplates( $article->getUsedTemplates() )}
1572 </div>
1573 " );
1574                 }
1575
1576                 # If the title doesn't exist, it's fairly pointless to print a return
1577                 # link to it.  After all, you just tried editing it and couldn't, so
1578                 # what's there to do there?
1579                 if( $this->getTitle()->exists() ) {
1580                         $this->returnToMain( null, $this->getTitle() );
1581                 }
1582         }
1583
1584         /** @deprecated */
1585         public function fatalError( $message ) {
1586                 wfDeprecated( __METHOD__ );
1587                 throw new FatalError( $message );
1588         }
1589
1590         /** @deprecated */
1591         public function unexpectedValueError( $name, $val ) {
1592                 wfDeprecated( __METHOD__ );
1593                 throw new FatalError( wfMsg( 'unexpected', $name, $val ) );
1594         }
1595
1596         /** @deprecated */
1597         public function fileCopyError( $old, $new ) {
1598                 wfDeprecated( __METHOD__ );
1599                 throw new FatalError( wfMsg( 'filecopyerror', $old, $new ) );
1600         }
1601
1602         /** @deprecated */
1603         public function fileRenameError( $old, $new ) {
1604                 wfDeprecated( __METHOD__ );
1605                 throw new FatalError( wfMsg( 'filerenameerror', $old, $new ) );
1606         }
1607
1608         /** @deprecated */
1609         public function fileDeleteError( $name ) {
1610                 wfDeprecated( __METHOD__ );
1611                 throw new FatalError( wfMsg( 'filedeleteerror', $name ) );
1612         }
1613
1614         /** @deprecated */
1615         public function fileNotFoundError( $name ) {
1616                 wfDeprecated( __METHOD__ );
1617                 throw new FatalError( wfMsg( 'filenotfound', $name ) );
1618         }
1619
1620         public function showFatalError( $message ) {
1621                 $this->setPageTitle( wfMsg( "internalerror" ) );
1622                 $this->setRobotPolicy( "noindex,nofollow" );
1623                 $this->setArticleRelated( false );
1624                 $this->enableClientCache( false );
1625                 $this->mRedirect = '';
1626                 $this->mBodytext = $message;
1627         }
1628
1629         public function showUnexpectedValueError( $name, $val ) {
1630                 $this->showFatalError( wfMsg( 'unexpected', $name, $val ) );
1631         }
1632
1633         public function showFileCopyError( $old, $new ) {
1634                 $this->showFatalError( wfMsg( 'filecopyerror', $old, $new ) );
1635         }
1636
1637         public function showFileRenameError( $old, $new ) {
1638                 $this->showFatalError( wfMsg( 'filerenameerror', $old, $new ) );
1639         }
1640
1641         public function showFileDeleteError( $name ) {
1642                 $this->showFatalError( wfMsg( 'filedeleteerror', $name ) );
1643         }
1644
1645         public function showFileNotFoundError( $name ) {
1646                 $this->showFatalError( wfMsg( 'filenotfound', $name ) );
1647         }
1648
1649         /**
1650          * Add a "return to" link pointing to a specified title
1651          *
1652          * @param Title $title Title to link
1653          * @param string $query Query string
1654          */
1655         public function addReturnTo( $title, $query = array() ) {
1656                 global $wgUser;
1657                 $this->addLink( array( 'rel' => 'next', 'href' => $title->getFullUrl() ) );
1658                 $link = wfMsgHtml( 'returnto', $wgUser->getSkin()->link(
1659                         $title, null, array(), $query ) );
1660                 $this->addHTML( "<p id=\"mw-returnto\">{$link}</p>\n" );
1661         }
1662
1663         /**
1664          * Add a "return to" link pointing to a specified title,
1665          * or the title indicated in the request, or else the main page
1666          *
1667          * @param null $unused No longer used
1668          * @param Title $returnto Title to return to
1669          */
1670         public function returnToMain( $unused = null, $returnto = null, $returntoquery = null ) {
1671                 global $wgRequest;
1672
1673                 if ( $returnto == null ) {
1674                         $returnto = $wgRequest->getText( 'returnto' );
1675                 }
1676
1677                 if ( $returntoquery == null ) {
1678                         $returntoquery = $wgRequest->getText( 'returntoquery' );
1679                 }
1680
1681                 if ( '' === $returnto ) {
1682                         $returnto = Title::newMainPage();
1683                 }
1684
1685                 if ( is_object( $returnto ) ) {
1686                         $titleObj = $returnto;
1687                 } else {
1688                         $titleObj = Title::newFromText( $returnto );
1689                 }
1690                 if ( !is_object( $titleObj ) ) {
1691                         $titleObj = Title::newMainPage();
1692                 }
1693
1694                 $this->addReturnTo( $titleObj, $returntoquery );
1695         }
1696
1697         /**
1698          * @return string The doctype, opening <html>, and head element.
1699          *
1700          * @param $sk Skin The given Skin
1701          */
1702         public function headElement( Skin $sk , $includeStyle = true ) {
1703                 global $wgDocType, $wgDTD, $wgContLanguageCode, $wgOutputEncoding, $wgMimeType;
1704                 global $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
1705                 global $wgContLang, $wgUseTrackbacks, $wgStyleVersion, $wgEnableScriptLoader, $wgHtml5;
1706
1707                 $this->addMeta( "http:Content-Type", "$wgMimeType; charset={$wgOutputEncoding}" );
1708                 if ( $sk->commonPrintStylesheet() ) {
1709                         $this->addStyle( 'common/wikiprintable.css', 'print' );
1710                 }
1711                 $sk->setupUserCss( $this );
1712
1713                 $ret = '';
1714
1715                 if( $wgMimeType == 'text/xml' || $wgMimeType == 'application/xhtml+xml' || $wgMimeType == 'application/xml' ) {
1716                         $ret .= "<?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
1717                 }
1718
1719                 if ( '' == $this->getHTMLTitle() ) {
1720                         $this->setHTMLTitle(  wfMsg( 'pagetitle', $this->getPageTitle() ));
1721                 }
1722
1723                 $dir = $wgContLang->getDir();
1724
1725                 if ( $wgHtml5 ) {
1726                         $ret .= "<!doctype html>\n";
1727                         $ret .= "<html lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1728                 } else {
1729                         $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\" \"$wgDTD\">\n";
1730                         $ret .= "<html xmlns=\"{$wgXhtmlDefaultNamespace}\" ";
1731                         foreach($wgXhtmlNamespaces as $tag => $ns) {
1732                                 $ret .= "xmlns:{$tag}=\"{$ns}\" ";
1733                         }
1734                         $ret .= "xml:lang=\"$wgContLanguageCode\" lang=\"$wgContLanguageCode\" dir=\"$dir\">\n";
1735                 }
1736
1737                 $ret .= "<head>\n";
1738                 $ret .= "<title>" . htmlspecialchars( $this->getHTMLTitle() ) . "</title>\n";
1739                 $ret .= implode( "\n", array(
1740                         $this->getHeadLinks(),
1741                         $this->buildCssLinks(),
1742                         $sk->getHeadScripts( $this ),
1743                         $this->getHeadItems(),
1744                 ));
1745                 if( $sk->usercss ){
1746                         $ret .= Html::inlineStyle( $sk->usercss );
1747                 }
1748
1749                 if( $wgEnableScriptLoader )
1750                         $ret .= $this->getScriptLoaderJs();
1751
1752                 if ($wgUseTrackbacks && $this->isArticleRelated())
1753                         $ret .= $this->getTitle()->trackbackRDF();
1754
1755                 $ret .= "</head>\n";
1756                 return $ret;
1757         }
1758
1759         protected function addDefaultMeta() {
1760                 global $wgVersion, $wgHtml5;
1761
1762                 static $called = false;
1763                 if ( $called ) {
1764                         # Don't run this twice
1765                         return;
1766                 }
1767                 $called = true;
1768
1769                 if ( !$wgHtml5 ) {
1770                         $this->addMeta( 'http:Content-Style-Type', 'text/css' ); //bug 15835
1771                 }
1772                 $this->addMeta( 'generator', "MediaWiki $wgVersion" );
1773
1774                 $p = "{$this->mIndexPolicy},{$this->mFollowPolicy}";
1775                 if( $p !== 'index,follow' ) {
1776                         // http://www.robotstxt.org/wc/meta-user.html
1777                         // Only show if it's different from the default robots policy
1778                         $this->addMeta( 'robots', $p );
1779                 }
1780
1781                 if ( count( $this->mKeywords ) > 0 ) {
1782                         $strip = array(
1783                                 "/<.*?" . ">/" => '',
1784                                 "/_/" => ' '
1785                         );
1786                         $this->addMeta( 'keywords', preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ) ) );
1787                 }
1788         }
1789
1790         /**
1791          * @return string HTML tag links to be put in the header.
1792          */
1793         public function getHeadLinks() {
1794                 global $wgRequest, $wgFeed;
1795
1796                 // Ideally this should happen earlier, somewhere. :P
1797                 $this->addDefaultMeta();
1798
1799                 $tags = array();
1800
1801                 foreach ( $this->mMetatags as $tag ) {
1802                         if ( 0 == strcasecmp( 'http:', substr( $tag[0], 0, 5 ) ) ) {
1803                                 $a = 'http-equiv';
1804                                 $tag[0] = substr( $tag[0], 5 );
1805                         } else {
1806                                 $a = 'name';
1807                         }
1808                         $tags[] = Xml::element( 'meta',
1809                                 array(
1810                                         $a => $tag[0],
1811                                         'content' => $tag[1] ) );
1812                 }
1813                 foreach ( $this->mLinktags as $tag ) {
1814                         $tags[] = Xml::element( 'link', $tag );
1815                 }
1816
1817                 if( $wgFeed ) {
1818                         foreach( $this->getSyndicationLinks() as $format => $link ) {
1819                                 # Use the page name for the title (accessed through $wgTitle since
1820                                 # there's no other way).  In principle, this could lead to issues
1821                                 # with having the same name for different feeds corresponding to
1822                                 # the same page, but we can't avoid that at this low a level.
1823
1824                                 $tags[] = $this->feedLink(
1825                                         $format,
1826                                         $link,
1827                                         wfMsg( "page-{$format}-feed", $this->getTitle()->getPrefixedText() ) ); # Used messages: 'page-rss-feed' and 'page-atom-feed' (for an easier grep)
1828                         }
1829
1830                         # Recent changes feed should appear on every page (except recentchanges,
1831                         # that would be redundant). Put it after the per-page feed to avoid
1832                         # changing existing behavior. It's still available, probably via a
1833                         # menu in your browser. Some sites might have a different feed they'd
1834                         # like to promote instead of the RC feed (maybe like a "Recent New Articles"
1835                         # or "Breaking news" one). For this, we see if $wgOverrideSiteFeed is defined.
1836                         # If so, use it instead.
1837
1838                         global $wgOverrideSiteFeed, $wgSitename, $wgFeedClasses;
1839                         $rctitle = SpecialPage::getTitleFor( 'Recentchanges' );
1840
1841                         if ( $wgOverrideSiteFeed ) {
1842                                 foreach ( $wgOverrideSiteFeed as $type => $feedUrl ) {
1843                                         $tags[] = $this->feedLink (
1844                                                 $type,
1845                                                 htmlspecialchars( $feedUrl ),
1846                                                 wfMsg( "site-{$type}-feed", $wgSitename ) );
1847                                 }
1848                         }
1849                         else if ( $this->getTitle()->getPrefixedText() != $rctitle->getPrefixedText() ) {
1850                                 foreach( $wgFeedClasses as $format => $class ) {
1851                                         $tags[] = $this->feedLink(
1852                                                 $format,
1853                                                 $rctitle->getLocalURL( "feed={$format}" ),
1854                                                 wfMsg( "site-{$format}-feed", $wgSitename ) ); # For grep: 'site-rss-feed', 'site-atom-feed'.
1855                                 }
1856                         }
1857                 }
1858
1859                 return implode( "\n", $tags ) . "\n";
1860         }
1861
1862         /**
1863          * Return URLs for each supported syndication format for this page.
1864          * @return array associating format keys with URLs
1865          */
1866         public function getSyndicationLinks() {
1867                 global $wgFeedClasses;
1868                 $links = array();
1869
1870                 if( $this->isSyndicated() ) {
1871                         if( is_string( $this->getFeedAppendQuery() ) ) {
1872                                 $appendQuery = "&" . $this->getFeedAppendQuery();
1873                         } else {
1874                                 $appendQuery = "";
1875                         }
1876
1877                         foreach( $wgFeedClasses as $format => $class ) {
1878                                 $links[$format] = $this->getTitle()->getLocalUrl( "feed=$format{$appendQuery}" );
1879                         }
1880                 }
1881                 return $links;
1882         }
1883
1884         /**
1885          * Generate a <link rel/> for an RSS feed.
1886          */
1887         private function feedLink( $type, $url, $text ) {
1888                 return Xml::element( 'link', array(
1889                         'rel' => 'alternate',
1890                         'type' => "application/$type+xml",
1891                         'title' => $text,
1892                         'href' => $url ) );
1893         }
1894
1895         /**
1896          * Add a local or specified stylesheet, with the given media options.
1897          * Meant primarily for internal use...
1898          *
1899          * @param $media -- to specify a media type, 'screen', 'printable', 'handheld' or any.
1900          * @param $conditional -- for IE conditional comments, specifying an IE version
1901          * @param $dir -- set to 'rtl' or 'ltr' for direction-specific sheets
1902          */
1903         public function addStyle( $style, $media='', $condition='', $dir='' ) {
1904                 $options = array();
1905                 // Even though we expect the media type to be lowercase, but here we
1906                 // force it to lowercase to be safe.
1907                 if( $media )
1908                         $options['media'] = $media;
1909                 if( $condition )
1910                         $options['condition'] = $condition;
1911                 if( $dir )
1912                         $options['dir'] = $dir;
1913                 $this->styles[$style] = $options;
1914         }
1915
1916         /**
1917          * Adds inline CSS styles
1918          * @param $style_css Mixed: inline CSS
1919          */
1920         public function addInlineStyle( $style_css ){
1921                 $this->mScripts .= Html::inlineStyle( $style_css );
1922         }
1923
1924         /**
1925          * Build a set of <link>s for the stylesheets specified in the $this->styles array.
1926          * These will be applied to various media & IE conditionals.
1927          */
1928         public function buildCssLinks() {
1929                 $links = array();
1930                 foreach( $this->styles as $file => $options ) {
1931                         $link = $this->styleLink( $file, $options );
1932                         if( $link )
1933                                 $links[] = $link;
1934                 }
1935
1936                 return implode( "\n", $links );
1937         }
1938
1939         protected function styleLink( $style, $options ) {
1940                 global $wgRequest;
1941
1942                 if( isset( $options['dir'] ) ) {
1943                         global $wgContLang;
1944                         $siteDir = $wgContLang->getDir();
1945                         if( $siteDir != $options['dir'] )
1946                                 return '';
1947                 }
1948
1949                 if( isset( $options['media'] ) ) {
1950                         $media = $this->transformCssMedia( $options['media'] );
1951                         if( is_null( $media ) ) {
1952                                 return '';
1953                         }
1954                 } else {
1955                         $media = 'all';
1956                 }
1957
1958                 if( substr( $style, 0, 1 ) == '/' ||
1959                         substr( $style, 0, 5 ) == 'http:' ||
1960                         substr( $style, 0, 6 ) == 'https:' ) {
1961                         $url = $style;
1962                 } else {
1963                         global $wgStylePath, $wgStyleVersion;
1964                         $url = $wgStylePath . '/' . $style . '?' . $wgStyleVersion;
1965                 }
1966
1967                 $link = Html::linkedStyle( $url, $media );
1968
1969                 if( isset( $options['condition'] ) ) {
1970                         $condition = htmlspecialchars( $options['condition'] );
1971                         $link = "<!--[if $condition]>$link<![endif]-->";
1972                 }
1973                 return $link;
1974         }
1975
1976         function transformCssMedia( $media ) {
1977                 global $wgRequest, $wgHandheldForIPhone;
1978
1979                 // Switch in on-screen display for media testing
1980                 $switches = array(
1981                         'printable' => 'print',
1982                         'handheld' => 'handheld',
1983                 );
1984                 foreach( $switches as $switch => $targetMedia ) {
1985                         if( $wgRequest->getBool( $switch ) ) {
1986                                 if( $media == $targetMedia ) {
1987                                         $media = '';
1988                                 } elseif( $media == 'screen' ) {
1989                                         return null;
1990                                 }
1991                         }
1992                 }
1993
1994                 // Expand longer media queries as iPhone doesn't grok 'handheld'
1995                 if( $wgHandheldForIPhone ) {
1996                         $mediaAliases = array(
1997                                 'screen' => 'screen and (min-device-width: 481px)',
1998                                 'handheld' => 'handheld, only screen and (max-device-width: 480px)',
1999                         );
2000
2001                         if( isset( $mediaAliases[$media] ) ) {
2002                                 $media = $mediaAliases[$media];
2003                         }
2004                 }
2005
2006                 return $media;
2007         }
2008
2009         /**
2010          * Turn off regular page output and return an error reponse
2011          * for when rate limiting has triggered.
2012          */
2013         public function rateLimited() {
2014
2015                 $this->setPageTitle(wfMsg('actionthrottled'));
2016                 $this->setRobotPolicy( 'noindex,follow' );
2017                 $this->setArticleRelated( false );
2018                 $this->enableClientCache( false );
2019                 $this->mRedirect = '';
2020                 $this->clearHTML();
2021                 $this->setStatusCode(503);
2022                 $this->addWikiMsg( 'actionthrottledtext' );
2023
2024                 $this->returnToMain( null, $this->getTitle() );
2025         }
2026
2027         /**
2028          * Show an "add new section" link?
2029          *
2030          * @return bool
2031          */
2032         public function showNewSectionLink() {
2033                 return $this->mNewSectionLink;
2034         }
2035
2036         /**
2037         * Forcibly hide the new section link?
2038         *
2039         * @return bool
2040         */
2041         public function forceHideNewSectionLink() {
2042                 return $this->mHideNewSectionLink;
2043         }
2044
2045         /**
2046          * Show a warning about slave lag
2047          *
2048          * If the lag is higher than $wgSlaveLagCritical seconds,
2049          * then the warning is a bit more obvious. If the lag is
2050          * lower than $wgSlaveLagWarning, then no warning is shown.
2051          *
2052          * @param int $lag Slave lag
2053          */
2054         public function showLagWarning( $lag ) {
2055                 global $wgSlaveLagWarning, $wgSlaveLagCritical;
2056                 if( $lag >= $wgSlaveLagWarning ) {
2057                         $message = $lag < $wgSlaveLagCritical
2058                                 ? 'lag-warn-normal'
2059                                 : 'lag-warn-high';
2060                         $warning = wfMsgExt( $message, 'parse', $lag );
2061                         $this->addHTML( "<div class=\"mw-{$message}\">\n{$warning}\n</div>\n" );
2062                 }
2063         }
2064
2065         /**
2066          * Add a wikitext-formatted message to the output.
2067          * This is equivalent to:
2068          *
2069          *    $wgOut->addWikiText( wfMsgNoTrans( ... ) )
2070          */
2071         public function addWikiMsg( /*...*/ ) {
2072                 $args = func_get_args();
2073                 $name = array_shift( $args );
2074                 $this->addWikiMsgArray( $name, $args );
2075         }
2076
2077         /**
2078          * Add a wikitext-formatted message to the output.
2079          * Like addWikiMsg() except the parameters are taken as an array
2080          * instead of a variable argument list.
2081          *
2082          * $options is passed through to wfMsgExt(), see that function for details.
2083          */
2084         public function addWikiMsgArray( $name, $args, $options = array() ) {
2085                 $options[] = 'parse';
2086                 $text = wfMsgExt( $name, $options, $args );
2087                 $this->addHTML( $text );
2088         }
2089
2090         /**
2091          * This function takes a number of message/argument specifications, wraps them in
2092          * some overall structure, and then parses the result and adds it to the output.
2093          *
2094          * In the $wrap, $1 is replaced with the first message, $2 with the second, and so
2095          * on. The subsequent arguments may either be strings, in which case they are the
2096          * message names, or arrays, in which case the first element is the message name,
2097          * and subsequent elements are the parameters to that message.
2098          *
2099          * The special named parameter 'options' in a message specification array is passed
2100          * through to the $options parameter of wfMsgExt().
2101          *
2102          * Don't use this for messages that are not in users interface language.
2103          *
2104          * For example:
2105          *
2106          *    $wgOut->wrapWikiMsg( '<div class="error">$1</div>', 'some-error' );
2107          *
2108          * Is equivalent to:
2109          *
2110          *    $wgOut->addWikiText( '<div class="error">' . wfMsgNoTrans( 'some-error' ) . '</div>' );
2111          */
2112         public function wrapWikiMsg( $wrap /*, ...*/ ) {
2113                 $msgSpecs = func_get_args();
2114                 array_shift( $msgSpecs );
2115                 $msgSpecs = array_values( $msgSpecs );
2116                 $s = $wrap;
2117                 foreach ( $msgSpecs as $n => $spec ) {
2118                         $options = array();
2119                         if ( is_array( $spec ) ) {
2120                                 $args = $spec;
2121                                 $name = array_shift( $args );
2122                                 if ( isset( $args['options'] ) ) {
2123                                         $options = $args['options'];
2124                                         unset( $args['options'] );
2125                                 }
2126                         }  else {
2127                                 $args = array();
2128                                 $name = $spec;
2129                         }
2130                         $s = str_replace( '$' . ( $n + 1 ), wfMsgExt( $name, $options, $args ), $s );
2131                 }
2132                 $this->addHTML( $this->parse( $s, /*linestart*/true, /*uilang*/true ) );
2133         }
2134 }