includes/OutputPage.php

   1 <?
   2 # See design.doc
   3
   4 if($wgUseTeX) include_once( "Math.php" );
   5
   6 class OutputPage {
   7         var $mHeaders, $mCookies, $mMetatags, $mKeywords;
   8         var $mLinktags, $mPagetitle, $mBodytext, $mDebugtext;
   9         var $mHTMLtitle, $mRobotpolicy, $mIsarticle, $mPrintable;
  10         var $mSubtitle, $mRedirect, $mAutonumber, $mHeadtext;
  11         var $mLastModified, $mCategoryLinks;
  12
  13         var $mDTopen, $mLastSection; # Used for processing DL, PRE
  14         var $mLanguageLinks, $mSupressQuickbar;
  15         var $mOnloadHandler;
  16
  17         function OutputPage()
  18         {
  19                 $this->mHeaders = $this->mCookies = $this->mMetatags =
  20                 $this->mKeywords = $this->mLinktags = array();
  21                 $this->mHTMLtitle = $this->mPagetitle = $this->mBodytext =
  22                 $this->mLastSection = $this->mRedirect = $this->mLastModified =
  23                 $this->mSubtitle = $this->mDebugtext = $this->mRobotpolicy =
  24                 $this->mOnloadHandler = "";
  25                 $this->mIsarticle = $this->mPrintable = true;
  26                 $this->mSupressQuickbar = $this->mDTopen = $this->mPrintable = false;
  27                 $this->mLanguageLinks = array();
  28                 $this->mCategoryLinks = array() ;
  29                 $this->mAutonumber = 0;
  30         }
  31
  32         function addHeader( $name, $val ) { array_push( $this->mHeaders, "$name: $val" ) ; }
  33         function addCookie( $name, $val ) { array_push( $this->mCookies, array( $name, $val ) ); }
  34         function redirect( $url ) { $this->mRedirect = $url; }
  35
  36         # To add an http-equiv meta tag, precede the name with "http:"
  37         function addMeta( $name, $val ) { array_push( $this->mMetatags, array( $name, $val ) ); }
  38         function addKeyword( $text ) { array_push( $this->mKeywords, $text ); }
  39         function addLink( $rel, $rev, $target ) { array_push( $this->mLinktags, array( $rel, $rev, $target ) ); }
  40
  41         function checkLastModified ( $timestamp )
  42         {
  43                 global $wgLang, $wgCachePages, $wgUser;
  44                 if( !$wgCachePages ) {
  45                         wfDebug( "CACHE DISABLED\n", false );
  46                         return;
  47                 }
  48                 if( preg_match( '/MSIE ([1-4]|5\.0)/', $_SERVER["HTTP_USER_AGENT"] ) ) {
  49                         # IE 5.0 has probs with our caching
  50                         wfDebug( "-- bad client, not caching\n", false );
  51                         return;
  52                 }
  53                 if( $wgUser->getOption( "nocache" ) ) {
  54                         wfDebug( "USER DISABLED CACHE\n", false );
  55                         return;
  56                 }
  57
  58                 $lastmod = gmdate( "D, j M Y H:i:s", wfTimestamp2Unix(
  59                         max( $timestamp, $wgUser->mTouched ) ) ) . " GMT";
  60
  61                 if( !empty( $_SERVER["HTTP_IF_MODIFIED_SINCE"] ) ) {
  62                         # IE sends sizes after the date like this:
  63                         # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
  64                         # this breaks strtotime().
  65                         $modsince = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
  66                         $ismodsince = wfUnix2Timestamp( strtotime( $modsince ) );
  67                         wfDebug( "-- client send If-Modified-Since: " . $modsince . "\n", false );
  68                         wfDebug( "--  we might send Last-Modified : $lastmod\n", false );
  69
  70                         if( ($ismodsince >= $timestamp ) and $wgUser->validateCache( $ismodsince ) ) {
  71                                 # Make sure you're in a place you can leave when you call us!
  72                                 header( "HTTP/1.0 304 Not Modified" );
  73                                 header( "Expires: Mon, 15 Jan 2001 00:00:00 GMT" ); # Cachers always validate the page!
  74                                 header( "Cache-Control: private, must-revalidate, max-age=0" );
  75                                 header( "Last-Modified: {$lastmod}" );
  76                                 wfDebug( "CACHED client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp\n", false );
  77                                 $this->reportTime(); # For profiling
  78                                 exit;
  79                         } else {
  80                                 wfDebug( "READY  client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp\n", false );
  81                                 $this->mLastModified = $lastmod;
  82                         }
  83                 } else {
  84                         wfDebug( "We're confused.\n", false );
  85                         $this->mLastModified = $lastmod;
  86                 }
  87         }
  88
  89         function setRobotpolicy( $str ) { $this->mRobotpolicy = $str; }
  90         function setHTMLtitle( $name ) { $this->mHTMLtitle = $name; }
  91         function setPageTitle( $name ) { $this->mPagetitle = $name; }
  92         function getPageTitle() { return $this->mPagetitle; }
  93         function setSubtitle( $str ) { $this->mSubtitle = $str; }
  94         function getSubtitle() { return $this->mSubtitle; }
  95         function setArticleFlag( $v ) { $this->mIsarticle = $v; }
  96         function isArticle() { return $this->mIsarticle; }
  97         function setPrintable() { $this->mPrintable = true; }
  98         function isPrintable() { return $this->mPrintable; }
  99         function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 100         function getOnloadHandler() { return $this->mOnloadHandler; }
 101
 102         function getLanguageLinks() {
 103                 global $wgTitle, $wgLanguageCode;
 104                 global $wgDBconnection, $wgDBname;
 105                 return $this->mLanguageLinks;
 106         }
 107         function supressQuickbar() { $this->mSupressQuickbar = true; }
 108         function isQuickbarSupressed() { return $this->mSupressQuickbar; }
 109
 110         function addHTML( $text ) { $this->mBodytext .= $text; }
 111         function addHeadtext( $text ) { $this->mHeadtext .= $text; }
 112         function debug( $text ) { $this->mDebugtext .= $text; }
 113
 114         # First pass--just handle <nowiki> sections, pass the rest off
 115         # to doWikiPass2() which does all the real work.
 116         #
 117
 118         function addWikiText( $text, $linestart = true )
 119         {
 120                 global $wgUseTeX;
 121                 $fname = "OutputPage::addWikiText";
 122                 wfProfileIn( $fname );
 123                 $unique  = "3iyZiyA7iMwg5rhxP0Dcc9oTnj8qD1jm1Sfv4";
 124                 $unique2 = "4LIQ9nXtiYFPCSfitVwDw7EYwQlL4GeeQ7qSO";
 125                 $unique3 = "fPaA8gDfdLBqzj68Yjg9Hil3qEF8JGO0uszIp";
 126                 $nwlist = array();
 127                 $nwsecs = 0;
 128                 $mathlist = array();
 129                 $mathsecs = 0;
 130                 $prelist = array ();
 131                 $presecs = 0;
 132                 $stripped = "";
 133                 $stripped2 = "";
 134                 $stripped3 = "";
 135
 136                 while ( "" != $text ) {
 137                         $p = preg_split( "/<\\s*nowiki\\s*>/i", $text, 2 );
 138                         $stripped .= $p[0];
 139                         if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { $text = ""; }
 140                         else {
 141                                 $q = preg_split( "/<\\/\\s*nowiki\\s*>/i", $p[1], 2 );
 142                                 ++$nwsecs;
 143                                 $nwlist[$nwsecs] = wfEscapeHTMLTagsOnly($q[0]);
 144                                 $stripped .= $unique . $nwsecs . "s";
 145                                 $text = $q[1];
 146                         }
 147                 }
 148
 149                 if( $wgUseTeX ) {
 150                         while ( "" != $stripped ) {
 151                                 $p = preg_split( "/<\\s*math\\s*>/i", $stripped, 2 );
 152                                 $stripped2 .= $p[0];
 153                                 if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { $stripped = ""; }
 154                                 else {
 155                                         $q = preg_split( "/<\\/\\s*math\\s*>/i", $p[1], 2 );
 156                                         ++$mathsecs;
 157                                         $mathlist[$mathsecs] = renderMath($q[0]);
 158                                         $stripped2 .= $unique2 . $mathsecs . "s";
 159                                         $stripped = $q[1];
 160                                 }
 161                         }
 162                 } else {
 163                         $stripped2 = $stripped;
 164                 }
 165
 166                 while ( "" != $stripped2 ) {
 167                         $p = preg_split( "/<\\s*pre\\s*>/i", $stripped2, 2 );
 168                         $stripped3 .= $p[0];
 169                         if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { $stripped2 = ""; }
 170                         else {
 171                                 $q = preg_split( "/<\\/\\s*pre\\s*>/i", $p[1], 2 );
 172                                 ++$presecs;
 173                                 $prelist[$presecs] = "<pre>". wfEscapeHTMLTagsOnly($q[0]). "</pre>";
 174                                 $stripped3 .= $unique3 . $presecs . "s";
 175                                 $stripped2 = $q[1];
 176                         }
 177                 }
 178
 179                 $text = $this->doWikiPass2( $stripped3, $linestart );
 180
 181                 $specialChars = array("\\", "$");
 182                 $escapedChars = array("\\\\", "\\$");
 183                 for ( $i = 1; $i <= $presecs; ++$i ) {
 184                         $text = preg_replace( "/{$unique3}{$i}s/", str_replace( $specialChars,
 185                                 $escapedChars, $prelist[$i] ), $text );
 186                 }
 187
 188                 for ( $i = 1; $i <= $mathsecs; ++$i ) {
 189                         $text = preg_replace( "/{$unique2}{$i}s/", str_replace( $specialChars,
 190                                 $escapedChars, $mathlist[$i] ), $text );
 191                 }
 192
 193                 for ( $i = 1; $i <= $nwsecs; ++$i ) {
 194                         $text = preg_replace( "/{$unique}{$i}s/", str_replace( $specialChars,
 195                                 $escapedChars, $nwlist[$i] ), $text );
 196                 }
 197                 $this->addHTML( $text );
 198                 wfProfileOut( $fname );
 199         }
 200
 201         function sendCacheControl() {
 202                 global $wgUseGzip;
 203                 if( $this->mLastModified != "" ) {
 204                         wfDebug( "** private caching; {$this->mLastModified} **\n", false );
 205                         header( "Cache-Control: private, must-revalidate, max-age=0" );
 206                         header( "Last-modified: {$this->mLastModified}" );
 207                         if( $wgUseGzip ) {
 208                                 # We should put in Accept-Encoding, but IE chokes on anything but
 209                                 # User-Agent in a Vary: header (at least through 6.0)
 210                                 header( "Vary: User-Agent" );
 211                         }
 212                 } else {
 213                         wfDebug( "** no caching **\n", false );
 214                         header( "Cache-Control: no-cache" ); # Experimental - see below
 215                         header( "Pragma: no-cache" );
 216                         header( "Last-modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
 217                 }
 218                 header( "Expires: Mon, 15 Jan 2001 00:00:00 GMT" ); # Cachers always validate the page!
 219         }
 220
 221         # Finally, all the text has been munged and accumulated into
 222         # the object, let's actually output it:
 223         #
 224         function output()
 225         {
 226                 global $wgUser, $wgLang, $wgDebugComments, $wgCookieExpiration;
 227                 global $wgInputEncoding, $wgOutputEncoding, $wgLanguageCode;
 228
 229                 $fname = "OutputPage::output";
 230                 wfProfileIn( $fname );
 231
 232                 $sk = $wgUser->getSkin();
 233
 234                 $this->sendCacheControl();
 235
 236                 header( "Content-type: text/html; charset={$wgOutputEncoding}" );
 237                 header( "Content-language: {$wgLanguageCode}" );
 238
 239                 if ( "" != $this->mRedirect ) {
 240                         header( "Location: {$this->mRedirect}" );
 241                         return;
 242                 }
 243
 244                 $exp = time() + $wgCookieExpiration;
 245                 foreach( $this->mCookies as $name => $val ) {
 246                         setcookie( $name, $val, $exp, "/" );
 247                 }
 248
 249                 $sk->outputPage( $this );
 250                 flush();
 251         }
 252
 253         function out( $ins )
 254         {
 255                 global $wgInputEncoding, $wgOutputEncoding, $wgLang;
 256                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
 257                         $outs = $ins;
 258                 } else {
 259                         $outs = $wgLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
 260                         if ( false === $outs ) { $outs = $ins; }
 261                 }
 262                 print $outs;
 263         }
 264
 265         function setEncodings()
 266         {
 267                 global $wgInputEncoding, $wgOutputEncoding;
 268                 global $wgUser, $wgLang;
 269
 270                 $wgInputEncoding = strtolower( $wgInputEncoding );
 271
 272                 if( $wgUser->getOption( 'altencoding' ) ) {
 273                         $wgLang->setAltEncoding();
 274                         return;
 275                 }
 276
 277                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
 278                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
 279                         return;
 280                 }
 281
 282                 /*
 283                 # This code is unused anyway!
 284                 # Commenting out. --bv 2003-11-15
 285
 286                 $a = explode( ",", $_SERVER['HTTP_ACCEPT_CHARSET'] );
 287                 $best = 0.0;
 288                 $bestset = "*";
 289
 290                 foreach ( $a as $s ) {
 291                         if ( preg_match( "/(.*);q=(.*)/", $s, $m ) ) {
 292                                 $set = $m[1];
 293                                 $q = (float)($m[2]);
 294                         } else {
 295                                 $set = $s;
 296                                 $q = 1.0;
 297                         }
 298                         if ( $q > $best ) {
 299                                 $bestset = $set;
 300                                 $best = $q;
 301                         }
 302                 }
 303                 #if ( "*" == $bestset ) { $bestset = "iso-8859-1"; }
 304                 if ( "*" == $bestset ) { $bestset = $wgOutputEncoding; }
 305                 $wgOutputEncoding = strtolower( $bestset );
 306
 307 # Disable for now
 308 #
 309                 */
 310                 $wgOutputEncoding = $wgInputEncoding;
 311         }
 312
 313         function reportTime()
 314         {
 315                 global $wgRequestTime, $wgDebugLogFile;
 316                 global $wgProfiling, $wgProfileStack, $wgProfileLimit, $wgUser;
 317
 318                 list( $usec, $sec ) = explode( " ", microtime() );
 319                 $now = (float)$sec + (float)$usec;
 320
 321                 list( $usec, $sec ) = explode( " ", $wgRequestTime );
 322                 $start = (float)$sec + (float)$usec;
 323                 $elapsed = $now - $start;
 324
 325                 if ( "" != $wgDebugLogFile ) {
 326                         $prof = wfGetProfilingOutput( $start, $elapsed );
 327                         if( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) )
 328                                 $forward = " forwarded for " . $_SERVER['HTTP_X_FORWARDED_FOR'];
 329                         if( !empty( $_SERVER['HTTP_CLIENT_IP'] ) )
 330                                 $forward .= " client IP " . $_SERVER['HTTP_CLIENT_IP'];
 331                         if( !empty( $_SERVER['HTTP_FROM'] ) )
 332                                 $forward .= " from " . $_SERVER['HTTP_FROM'];
 333                         if( $forward )
 334                                 $forward = "\t(proxied via {$_SERVER['REMOTE_ADDR']}{$forward})";
 335                         if($wgUser->getId() == 0)
 336                                 $forward .= " anon";
 337                         $log = sprintf( "%s\t%04.3f\t%s\n",
 338                           gmdate( "YmdHis" ), $elapsed,
 339                           urldecode( $_SERVER['REQUEST_URI'] . $forward ) );
 340                         error_log( $log . $prof, 3, $wgDebugLogFile );
 341                 }
 342                 $com = sprintf( "<!-- Time since request: %01.2f secs. -->",
 343                   $elapsed );
 344                 return $com;
 345         }
 346
 347         # Note: these arguments are keys into wfMsg(), not text!
 348         #
 349         function errorpage( $title, $msg )
 350         {
 351                 global $wgTitle;
 352
 353                 $this->mDebugtext .= "Original title: " .
 354                   $wgTitle->getPrefixedText() . "\n";
 355                 $this->setHTMLTitle( wfMsg( "errorpagetitle" ) );
 356                 $this->setPageTitle( wfMsg( $title ) );
 357                 $this->setRobotpolicy( "noindex,nofollow" );
 358                 $this->setArticleFlag( false );
 359
 360                 $this->mBodytext = "";
 361                 $this->addHTML( "<p>" . wfMsg( $msg ) . "\n" );
 362                 $this->returnToMain( false );
 363
 364                 $this->output();
 365                 exit;
 366         }
 367
 368         function sysopRequired()
 369         {
 370                 global $wgUser;
 371
 372                 $this->setHTMLTitle( wfMsg( "errorpagetitle" ) );
 373                 $this->setPageTitle( wfMsg( "sysoptitle" ) );
 374                 $this->setRobotpolicy( "noindex,nofollow" );
 375                 $this->setArticleFlag( false );
 376                 $this->mBodytext = "";
 377
 378                 $sk = $wgUser->getSkin();
 379                 $ap = $sk->makeKnownLink( wfMsg( "administrators" ), "" );
 380                 $this->addHTML( wfMsg( "sysoptext", $ap ) );
 381                 $this->returnToMain();
 382         }
 383
 384         function developerRequired()
 385         {
 386                 global $wgUser;
 387
 388                 $this->setHTMLTitle( wfMsg( "errorpagetitle" ) );
 389                 $this->setPageTitle( wfMsg( "developertitle" ) );
 390                 $this->setRobotpolicy( "noindex,nofollow" );
 391                 $this->setArticleFlag( false );
 392                 $this->mBodytext = "";
 393
 394                 $sk = $wgUser->getSkin();
 395                 $ap = $sk->makeKnownLink( wfMsg( "administrators" ), "" );
 396                 $this->addHTML( wfMsg( "developertext", $ap ) );
 397                 $this->returnToMain();
 398         }
 399
 400         function databaseError( $fname )
 401         {
 402                 global $wgUser, $wgCommandLineMode;
 403
 404                 $this->setPageTitle( wfMsgNoDB( "databaseerror" ) );
 405                 $this->setRobotpolicy( "noindex,nofollow" );
 406                 $this->setArticleFlag( false );
 407
 408                 if ( $wgCommandLineMode ) {
 409                         $msg = wfMsgNoDB( "dberrortextcl" );
 410                 } else {
 411                         $msg = wfMsgNoDB( "dberrortext" );
 412                 }
 413
 414                 $msg = str_replace( "$1", htmlspecialchars( wfLastDBquery() ), $msg );
 415                 $msg = str_replace( "$2", htmlspecialchars( $fname ), $msg );
 416                 $msg = str_replace( "$3", wfLastErrno(), $msg );
 417                 $msg = str_replace( "$4", htmlspecialchars( wfLastError() ), $msg );
 418
 419                 if ( $wgCommandLineMode ) {
 420                         print "$msg\n";
 421                         exit();
 422                 }
 423                 $sk = $wgUser->getSkin();
 424                 $shlink = $sk->makeKnownLink( wfMsgNoDB( "searchhelppage" ),
 425                   wfMsgNoDB( "searchingwikipedia" ) );
 426                 $msg = str_replace( "$5", $shlink, $msg );
 427
 428                 $this->mBodytext = $msg;
 429                 $this->output();
 430                 exit();
 431         }
 432
 433         function readOnlyPage( $source = "", $protected = false )
 434         {
 435                 global $wgUser, $wgReadOnlyFile;
 436
 437                 $this->setRobotpolicy( "noindex,nofollow" );
 438                 $this->setArticleFlag( false );
 439
 440                 if( $protected ) {
 441                         $this->setPageTitle( wfMsg( "viewsource" ) );
 442                         $this->addWikiText( wfMsg( "protectedtext" ) );
 443                 } else {
 444                         $this->setPageTitle( wfMsg( "readonly" ) );
 445                         $reason = file_get_contents( $wgReadOnlyFile );
 446                         $this->addHTML( wfMsg( "readonlytext", $reason ) );
 447                 }
 448
 449                 if($source) {
 450                         $rows = $wgUser->getOption( "rows" );
 451                         $cols = $wgUser->getOption( "cols" );
 452                         $text .= "</p>\n<textarea cols='$cols' rows='$rows' readonly>" .
 453                                 htmlspecialchars( $source ) . "\n</textarea>";
 454                         $this->addHTML( $text );
 455                 }
 456
 457                 $this->returnToMain( false );
 458         }
 459
 460         function fatalError( $message )
 461         {
 462                 $this->setPageTitle( wfMsg( "internalerror" ) );
 463                 $this->setRobotpolicy( "noindex,nofollow" );
 464                 $this->setArticleFlag( false );
 465
 466                 $this->mBodytext = $message;
 467                 $this->output();
 468                 exit;
 469         }
 470
 471         function unexpectedValueError( $name, $val )
 472         {
 473                 $this->fatalError( wfMsg( "unexpected", $name, $val ) );
 474         }
 475
 476         function fileCopyError( $old, $new )
 477         {
 478                 $this->fatalError( wfMsg( "filecopyerror", $old, $new ) );
 479         }
 480
 481         function fileRenameError( $old, $new )
 482         {
 483                 $this->fatalError( wfMsg( "filerenameerror", $old, $new ) );
 484         }
 485
 486         function fileDeleteError( $name )
 487         {
 488                 $this->fatalError( wfMsg( "filedeleteerror", $name ) );
 489         }
 490
 491         function fileNotFoundError( $name )
 492         {
 493                 $this->fatalError( wfMsg( "filenotfound", $name ) );
 494         }
 495
 496         function returnToMain( $auto = true )
 497         {
 498                 global $wgUser, $wgOut, $returnto;
 499
 500                 $sk = $wgUser->getSkin();
 501                 if ( "" == $returnto ) {
 502                         $returnto = wfMsg( "mainpage" );
 503                 }
 504                 $link = $sk->makeKnownLink( $returnto, "" );
 505
 506                 $r = wfMsg( "returnto", $link );
 507                 if ( $auto ) {
 508                         $wgOut->addMeta( "http:Refresh", "10;url=" .
 509                           wfLocalUrlE( wfUrlencode( $returnto ) ) );
 510                 }
 511                 $wgOut->addHTML( "\n<p>$r\n" );
 512         }
 513
 514
 515         function categoryMagic ()
 516         {
 517                 global $wgTitle , $wgUseCategoryMagic ;
 518                 if ( !isset ( $wgUseCategoryMagic ) || !$wgUseCategoryMagic ) return ;
 519                 $id = $wgTitle->getArticleID() ;
 520                 $cat = ucfirst ( wfMsg ( "category" ) ) ;
 521                 $ti = $wgTitle->getText() ;
 522                 $ti = explode ( ":" , $ti , 2 ) ;
 523                 if ( $cat != $ti[0] ) return "" ;
 524                 $r = "<br break=all>\n" ;
 525
 526                 $articles = array() ;
 527                 $parents = array () ;
 528                 $children = array() ;
 529
 530
 531                 global $wgUser ;
 532                 $sk = $wgUser->getSkin() ;
 533                 $sql = "SELECT l_from FROM links WHERE l_to={$id}" ;
 534                 $res = wfQuery ( $sql, DB_READ ) ;
 535                 while ( $x = wfFetchObject ( $res ) )
 536                 {
 537                 #  $t = new Title ;
 538                 #  $t->newFromDBkey ( $x->l_from ) ;
 539                 #  $t = $t->getText() ;
 540                         $t = $x->l_from ;
 541                         $y = explode ( ":" , $t , 2 ) ;
 542                         if ( count ( $y ) == 2 && $y[0] == $cat ) {
 543                                 array_push ( $children , $sk->makeLink ( $t , $y[1] ) ) ;
 544                         } else {
 545                                 array_push ( $articles , $sk->makeLink ( $t ) ) ;
 546                         }
 547                 }
 548                 wfFreeResult ( $res ) ;
 549
 550                 # Children
 551                 if ( count ( $children ) > 0 )
 552                 {
 553                         asort ( $children ) ;
 554                         $r .= "<h2>".wfMsg("subcategories")."</h2>\n" ;
 555                         $r .= implode ( ", " , $children ) ;
 556                 }
 557
 558                 # Articles
 559                 if ( count ( $articles ) > 0 )
 560                 {
 561                         asort ( $articles ) ;
 562                         $h =  wfMsg( "category_header", $ti[1] );
 563                         $r .= "<h2>{$h}</h2>\n" ;
 564                         $r .= implode ( ", " , $articles ) ;
 565                 }
 566
 567
 568                 return $r ;
 569         }
 570
 571 function getHTMLattrs ()
 572 {
 573                 $htmlattrs = array( # Allowed attributes--no scripting, etc.
 574                         "title", "align", "lang", "dir", "width", "height",
 575                         "bgcolor", "clear", /* BR */ "noshade", /* HR */
 576                         "cite", /* BLOCKQUOTE, Q */ "size", "face", "color",
 577                         /* FONT */ "type", "start", "value", "compact",
 578                         /* For various lists, mostly deprecated but safe */
 579                         "summary", "width", "border", "frame", "rules",
 580                         "cellspacing", "cellpadding", "valign", "char",
 581                         "charoff", "colgroup", "col", "span", "abbr", "axis",
 582                         "headers", "scope", "rowspan", "colspan", /* Tables */
 583                         "id", "class", "name", "style" /* For CSS */
 584                 );
 585 return $htmlattrs ;
 586 }
 587
 588 function fixTableTags ( $t )
 589 {
 590   if ( trim ( $t ) == "" ) return "" ; # Saves runtime ;-)
 591   $htmlattrs = $this->getHTMLattrs() ;
 592
 593 # Strip non-approved attributes from the tag
 594   $t = preg_replace(
 595                     "/(\\w+)(\\s*=\\s*([^\\s\">]+|\"[^\">]*\"))?/e",
 596                     "(in_array(strtolower(\"\$1\"),\$htmlattrs)?(\"\$1\".((\"x\$3\" != \"x\")?\"=\$3\":'')):'')",
 597                     $t);
 598
 599   return trim ( $t ) ;
 600 }
 601
 602 function doTableStuff ( $t )
 603 {
 604   $t = explode ( "\n" , $t ) ;
 605   $td = array () ; # Is currently a td tag open?
 606   $ltd = array () ; # Was it TD or TH?
 607   $tr = array () ; # Is currently a tr tag open?
 608   $ltr = array () ; # tr attributes
 609   foreach ( $t AS $k => $x )
 610     {
 611       $x = rtrim ( $x ) ;
 612       $fc = substr ( $x , 0 , 1 ) ;
 613       if ( "{|" == substr ( $x , 0 , 2 ) )
 614         {
 615           $t[$k] = "<table " . $this->fixTableTags ( substr ( $x , 3 ) ) . ">" ;
 616           array_push ( $td , false ) ;
 617           array_push ( $ltd , "" ) ;
 618           array_push ( $tr , false ) ;
 619           array_push ( $ltr , "" ) ;
 620         }
 621       else if ( count ( $td ) == 0 ) { } # Don't do any of the following
 622       else if ( "|}" == substr ( $x , 0 , 2 ) )
 623         {
 624           $z = "</table>\n" ;
 625           $l = array_pop ( $ltd ) ;
 626           if ( array_pop ( $tr ) ) $z = "</tr>" . $z ;
 627           if ( array_pop ( $td ) ) $z = "</{$l}>" . $z ;
 628           array_pop ( $ltr ) ;
 629           $t[$k] = $z ;
 630         }
 631 /*      else if ( "|_" == substr ( $x , 0 , 2 ) ) # Caption
 632         {
 633         $z = trim ( substr ( $x , 2 ) ) ;
 634         $t[$k] = "<caption>{$z}</caption>\n" ;
 635         }*/
 636       else if ( "|-" == substr ( $x , 0 , 2 ) ) # Allows for |---------------
 637         {
 638           $x = substr ( $x , 1 ) ;
 639           while ( $x != "" && substr ( $x , 0 , 1 ) == '-' ) $x = substr ( $x , 1 ) ;
 640           $z = "" ;
 641           $l = array_pop ( $ltd ) ;
 642           if ( array_pop ( $tr ) ) $z = "</tr>" . $z ;
 643           if ( array_pop ( $td ) ) $z = "</{$l}>" . $z ;
 644           array_pop ( $ltr ) ;
 645           $t[$k] = $z ;
 646           array_push ( $tr , false ) ;
 647           array_push ( $td , false ) ;
 648           array_push ( $ltd , "" ) ;
 649           array_push ( $ltr , $this->fixTableTags ( $x ) ) ;
 650         }
 651       else if ( "|" == $fc || "!" == $fc || "|+" == substr ( $x , 0 , 2 ) ) # Caption
 652         {
 653           if ( "|+" == substr ( $x , 0 , 2 ) )
 654               {
 655               $fc = "+" ;
 656               $x = substr ( $x , 1 ) ;
 657               }
 658           $after = substr ( $x , 1 ) ;
 659           if ( $fc == "!" ) $after = str_replace ( "!!" , "||" , $after ) ;
 660           $after = explode ( "||" , $after ) ;
 661           $t[$k] = "" ;
 662           foreach ( $after AS $theline )
 663              {
 664           $z = "" ;
 665           $tra = array_pop ( $ltr ) ;
 666           if ( !array_pop ( $tr ) ) $z = "<tr {$tra}>\n" ;
 667           array_push ( $tr , true ) ;
 668           array_push ( $ltr , "" ) ;
 669
 670           $l = array_pop ( $ltd ) ;
 671           if ( array_pop ( $td ) ) $z = "</{$l}>" . $z ;
 672           if ( $fc == "|" ) $l = "TD" ;
 673           else if ( $fc == "!" ) $l = "TH" ;
 674           else if ( $fc == "+" ) $l = "CAPTION" ;
 675           else $l = "" ;
 676           array_push ( $ltd , $l ) ;
 677           $y = explode ( "|" , $theline , 2 ) ;
 678           if ( count ( $y ) == 1 ) $y = "{$z}<{$l}>{$y[0]}" ;
 679           else $y = $y = "{$z}<{$l} ".$this->fixTableTags($y[0]).">{$y[1]}" ;
 680           $t[$k] .= $y ;
 681           array_push ( $td , true ) ;
 682              }
 683         }
 684     }
 685
 686 # Closing open td, tr && table
 687 while ( count ( $td ) > 0 )
 688 {
 689 if ( array_pop ( $td ) ) $t[] = "</td>" ;
 690 if ( array_pop ( $tr ) ) $t[] = "</tr>" ;
 691 $t[] = "</table>" ;
 692 }
 693
 694   $t = implode ( "\n" , $t ) ;
 695 #               $t = $this->removeHTMLtags( $t );
 696   return $t ;
 697 }
 698
 699         # Well, OK, it's actually about 14 passes.  But since all the
 700         # hard lifting is done inside PHP's regex code, it probably
 701         # wouldn't speed things up much to add a real parser.
 702         #
 703         function doWikiPass2( $text, $linestart )
 704         {
 705                 global $wgUser, $wgLang, $wgUseDynamicDates;
 706                 $fname = "OutputPage::doWikiPass2";
 707                 wfProfileIn( $fname );
 708
 709                 $text = $this->removeHTMLtags( $text );
 710                 $text = $this->replaceVariables( $text );
 711
 712                 $text = preg_replace( "/(^|\n)-----*/", "\\1<hr>", $text );
 713                 $text = str_replace ( "<HR>", "<hr>", $text );
 714
 715                 $text = $this->doAllQuotes( $text );
 716                 $text = $this->doHeadings( $text );
 717                 $text = $this->doBlockLevels( $text, $linestart );
 718
 719                 if($wgUseDynamicDates) {
 720                         global $wgDateFormatter;
 721                         $text = $wgDateFormatter->reformat( $wgUser->getOption("date"), $text );
 722                 }
 723
 724                 $text = $this->replaceExternalLinks( $text );
 725                 $text = $this->replaceInternalLinks ( $text );
 726                 $text = $this->doTableStuff ( $text ) ;
 727
 728                 $text = $this->magicISBN( $text );
 729                 $text = $this->magicRFC( $text );
 730                 $text = $this->formatHeadings( $text );
 731
 732                 $sk = $wgUser->getSkin();
 733                 $text = $sk->transformContent( $text );
 734                 $text .= $this->categoryMagic () ;
 735
 736                 wfProfileOut( $fname );
 737                 return $text;
 738         }
 739
 740         /* private */ function doAllQuotes( $text )
 741         {
 742                 $outtext = "";
 743                 $lines = explode( "\r\n", $text );
 744                 foreach ( $lines as $line ) {
 745                         $outtext .= $this->doQuotes ( "", $line, "" ) . "\r\n";
 746                 }
 747                 return $outtext;
 748         }
 749
 750         /* private */ function doQuotes( $pre, $text, $mode )
 751         {
 752                 if ( preg_match( "/^(.*)''(.*)$/sU", $text, $m ) ) {
 753                         $m1_strong = ($m[1] == "") ? "" : "<strong>{$m[1]}</strong>";
 754                         $m1_em = ($m[1] == "") ? "" : "<em>{$m[1]}</em>";
 755                         if ( substr ($m[2], 0, 1) == "'" ) {
 756                                 $m[2] = substr ($m[2], 1);
 757                                 if ($mode == "em") {
 758                                         return $this->doQuotes ( $m[1], $m[2], ($m[1] == "") ? "both" : "emstrong" );
 759                                 } else if ($mode == "strong") {
 760                                         return $m1_strong . $this->doQuotes ( "", $m[2], "" );
 761                                 } else if (($mode == "emstrong") || ($mode == "both")) {
 762                                         return $this->doQuotes ( "", $pre.$m1_strong.$m[2], "em" );
 763                                 } else if ($mode == "strongem") {
 764                                         return "<strong>{$pre}{$m1_em}</strong>" . $this->doQuotes ( "", $m[2], "em" );
 765                                 } else {
 766                                         return $m[1] . $this->doQuotes ( "", $m[2], "strong" );
 767                                 }
 768                         } else {
 769                                 if ($mode == "strong") {
 770                                         return $this->doQuotes ( $m[1], $m[2], ($m[1] == "") ? "both" : "strongem" );
 771                                 } else if ($mode == "em") {
 772                                         return $m1_em . $this->doQuotes ( "", $m[2], "" );
 773                                 } else if ($mode == "emstrong") {
 774                                         return "<em>{$pre}{$m1_strong}</em>" . $this->doQuotes ( "", $m[2], "strong" );
 775                                 } else if (($mode == "strongem") || ($mode == "both")) {
 776                                         return $this->doQuotes ( "", $pre.$m1_em.$m[2], "strong" );
 777                                 } else {
 778                                         return $m[1] . $this->doQuotes ( "", $m[2], "em" );
 779                                 }
 780                         }
 781                 } else {
 782                         $text_strong = ($text == "") ? "" : "<strong>{$text}</strong>";
 783                         $text_em = ($text == "") ? "" : "<em>{$text}</em>";
 784                         if ($mode == "") {
 785                                 return $pre . $text;
 786                         } else if ($mode == "em") {
 787                                 return $pre . $text_em;
 788                         } else if ($mode == "strong") {
 789                                 return $pre . $text_strong;
 790                         } else if ($mode == "strongem") {
 791                                 return (($pre == "") && ($text == "")) ? "" : "<strong>{$pre}{$text_em}</strong>";
 792                         } else {
 793                                 return (($pre == "") && ($text == "")) ? "" : "<em>{$pre}{$text_strong}</em>";
 794                         }
 795                 }
 796         }
 797
 798         /* private */ function doHeadings( $text )
 799         {
 800                 for ( $i = 6; $i >= 1; --$i ) {
 801                         $h = substr( "======", 0, $i );
 802                         $text = preg_replace( "/^{$h}([^=]+){$h}(\\s|$)/m",
 803                           "<h{$i}>\\1</h{$i}>\\2", $text );
 804                 }
 805                 return $text;
 806         }
 807
 808         # Note: we have to do external links before the internal ones,
 809         # and otherwise take great care in the order of things here, so
 810         # that we don't end up interpreting some URLs twice.
 811
 812         /* private */ function replaceExternalLinks( $text )
 813         {
 814                 $fname = "OutputPage::replaceExternalLinks";
 815                 wfProfileIn( $fname );
 816                 $text = $this->subReplaceExternalLinks( $text, "http", true );
 817                 $text = $this->subReplaceExternalLinks( $text, "https", true );
 818                 $text = $this->subReplaceExternalLinks( $text, "ftp", false );
 819                 $text = $this->subReplaceExternalLinks( $text, "gopher", false );
 820                 $text = $this->subReplaceExternalLinks( $text, "news", false );
 821                 $text = $this->subReplaceExternalLinks( $text, "mailto", false );
 822                 wfProfileOut( $fname );
 823                 return $text;
 824         }
 825
 826         /* private */ function subReplaceExternalLinks( $s, $protocol, $autonumber )
 827         {
 828                 global $wgUser, $printable;
 829                 global $wgAllowExternalImages;
 830
 831
 832                 $unique = "4jzAfzB8hNvf4sqyO9Edd8pSmk9rE2in0Tgw3";
 833                 $uc = "A-Za-z0-9_\\/~%\\-+&*#?!=()@\\x80-\\xFF";
 834
 835                 # this is  the list of separators that should be ignored if they
 836                 # are the last character of an URL but that should be included
 837                 # if they occur within the URL, e.g. "go to www.foo.com, where .."
 838                 # in this case, the last comma should not become part of the URL,
 839                 # but in "www.foo.com/123,2342,32.htm" it should.
 840                 $sep = ",;\.:";
 841                 $fnc = "A-Za-z0-9_.,~%\\-+&;#*?!=()@\\x80-\\xFF";
 842                 $images = "gif|png|jpg|jpeg";
 843
 844                 # PLEASE NOTE: The curly braces { } are not part of the regex,
 845                 # they are interpreted as part of the string (used to tell PHP
 846                 # that the content of the string should be inserted there).
 847                 $e1 = "/(^|[^\\[])({$protocol}:)([{$uc}{$sep}]+)\\/([{$fnc}]+)\\." .
 848                   "((?i){$images})([^{$uc}]|$)/";
 849
 850                 $e2 = "/(^|[^\\[])({$protocol}:)(([".$uc."]|[".$sep."][".$uc."])+)([^". $uc . $sep. "]|[".$sep."]|$)/";
 851                 $sk = $wgUser->getSkin();
 852
 853                 if ( $autonumber and $wgAllowExternalImages) { # Use img tags only for HTTP urls
 854                         $s = preg_replace( $e1, "\\1" . $sk->makeImage( "{$unique}:\\3" .
 855                           "/\\4.\\5", "\\4.\\5" ) . "\\6", $s );
 856                 }
 857                 $s = preg_replace( $e2, "\\1" . "<a href=\"{$unique}:\\3\"" .
 858                   $sk->getExternalLinkAttributes( "{$unique}:\\3", wfEscapeHTML(
 859                   "{$unique}:\\3" ) ) . ">" . wfEscapeHTML( "{$unique}:\\3" ) .
 860                   "</a>\\5", $s );
 861                 $s = str_replace( $unique, $protocol, $s );
 862
 863                 $a = explode( "[{$protocol}:", " " . $s );
 864                 $s = array_shift( $a );
 865                 $s = substr( $s, 1 );
 866
 867                 $e1 = "/^([{$uc}"."{$sep}]+)](.*)\$/sD";
 868                 $e2 = "/^([{$uc}"."{$sep}]+)\\s+([^\\]]+)](.*)\$/sD";
 869
 870                 foreach ( $a as $line ) {
 871                         if ( preg_match( $e1, $line, $m ) ) {
 872                                 $link = "{$protocol}:{$m[1]}";
 873                                 $trail = $m[2];
 874                                 if ( $autonumber ) { $text = "[" . ++$this->mAutonumber . "]"; }
 875                                 else { $text = wfEscapeHTML( $link ); }
 876                         } else if ( preg_match( $e2, $line, $m ) ) {
 877                                 $link = "{$protocol}:{$m[1]}";
 878                                 $text = $m[2];
 879                                 $trail = $m[3];
 880                         } else {
 881                                 $s .= "[{$protocol}:" . $line;
 882                                 continue;
 883                         }
 884                         if ( $printable == "yes") $paren = " (<i>" . htmlspecialchars ( $link ) . "</i>)";
 885                         else $paren = "";
 886                         $la = $sk->getExternalLinkAttributes( $link, $text );
 887                         $s .= "<a href='{$link}'{$la}>{$text}</a>{$paren}{$trail}";
 888
 889                 }
 890                 return $s;
 891         }
 892
 893         /* private */ function replaceInternalLinks( $s )
 894         {
 895                 global $wgTitle, $wgUser, $wgLang;
 896                 global $wgLinkCache, $wgInterwikiMagic, $wgUseCategoryMagic;
 897                 global $wgNamespacesWithSubpages, $wgLanguageCode;
 898                 wfProfileIn( $fname = "OutputPage::replaceInternalLinks" );
 899
 900                 wfProfileIn( "$fname-setup" );
 901                 $tc = Title::legalChars() . "#";
 902                 $sk = $wgUser->getSkin();
 903
 904                 $a = explode( "[[", " " . $s );
 905                 $s = array_shift( $a );
 906                 $s = substr( $s, 1 );
 907
 908                 $e1 = "/^([{$tc}]+)(?:\\|([^]]+))?]](.*)\$/sD";
 909
 910                 # Special and Media are pseudo-namespaces; no pages actually exist in them
 911                 $image = Namespace::getImage();
 912                 $special = Namespace::getSpecial();
 913                 $media = Namespace::getMedia();
 914                 $nottalk = !Namespace::isTalk( $wgTitle->getNamespace() );
 915                 wfProfileOut( "$fname-setup" );
 916
 917                 foreach ( $a as $line ) {
 918                         if ( preg_match( $e1, $line, $m ) ) { # page with normal text or alt
 919                                 $text = $m[2];
 920                                 $trail = $m[3];
 921                         } else { # Invalid form; output directly
 922                                 $s .= "[[" . $line ;
 923                                 continue;
 924                         }
 925
 926                         /* Valid link forms:
 927                         Foobar -- normal
 928                         :Foobar -- override special treatment of prefix (images, language links)
 929                         /Foobar -- convert to CurrentPage/Foobar
 930                         /Foobar/ -- convert to CurrentPage/Foobar, strip the initial / from text
 931                         */
 932                         $c = substr($m[1],0,1);
 933                         $noforce = ($c != ":");
 934                         if( $c == "/" ) { # subpage
 935                                 if(substr($m[1],-1,1)=="/") {                 # / at end means we don't want the slash to be shown
 936                                         $m[1]=substr($m[1],1,strlen($m[1])-2);
 937                                         $noslash=$m[1];
 938                                 } else {
 939                                         $noslash=substr($m[1],1);
 940                                 }
 941                                 if($wgNamespacesWithSubpages[$wgTitle->getNamespace()]) { # subpages allowed here
 942                                         $link = $wgTitle->getPrefixedText(). "/" . trim($noslash);
 943                                         if(!$text) {
 944                                                 $text= $m[1];
 945                                         } # this might be changed for ugliness reasons
 946                                 } else {
 947                                         $link = $noslash; # no subpage allowed, use standard link
 948                                 }
 949                         } elseif( $noforce ) { # no subpage
 950                                 $link = $m[1];
 951                         } else {
 952                                 $link = substr( $m[1], 1 );
 953                         }
 954                         if( empty( $text ) )
 955                                 $text = $link;
 956
 957                         $nt = Title::newFromText( $link );
 958                         if( !$nt ) {
 959                                 $s .= "[[" . $line;
 960                                 continue;
 961                         }
 962                         $ns = $nt->getNamespace();
 963                         $iw = $nt->getInterWiki();
 964                         if( $noforce ) {
 965                                 if( $iw && $wgInterwikiMagic && $nottalk && $wgLang->getLanguageName( $iw ) ) {
 966                                         array_push( $this->mLanguageLinks, $nt->getPrefixedText() );
 967                                         $s .= $trail;
 968 /* CHECK MERGE @@@
 969                                 } else if ( "media" == $pre ) {
 970                                         $nt = Title::newFromText( $suf );
 971                                         $name = $nt->getDBkey();
 972                                         if ( "" == $text ) { $text = $nt->GetText(); }
 973
 974                                         $wgLinkCache->addImageLink( $name );
 975                                         $s .= $sk->makeMediaLink( $name,
 976                                           wfImageUrl( $name ), $text );
 977                                         $s .= $trail;
 978                                 } else if ( isset($wgUseCategoryMagic) && $wgUseCategoryMagic && $pre == wfMsg ( "category" ) ) {
 979                                         $l = $sk->makeLink ( $pre.":".ucfirst( $m[2] ), ucfirst ( $m[2] ) ) ;
 980                                         array_push ( $this->mCategoryLinks , $l ) ;
 981                                         $s .= $trail ;
 982                                 } else {
 983                                         $l = $wgLang->getLanguageName( $pre );
 984                                         if ( "" == $l or !$wgInterwikiMagic or Namespace::isTalk( $wgTitle->getNamespace() ) ) {
 985                                                 if ( "" == $text ) {
 986                                                         $text = $link;
 987                                                 }
 988                                                 $s .= $sk->makeLink( $link, $text, "", $trail );
 989                                         } else if ( $pre != $wgLanguageCode ) {
 990                                                 array_push( $this->mLanguageLinks, "$pre:$suf" );
 991                                                 $s .= $trail;
 992                                         }
 993 */
 994                                         continue;
 995                                 }
 996                                 if( $ns == $image ) {
 997                                         $s .= $sk->makeImageLinkObj( $nt, $text ) . $trail;
 998                                         $wgLinkCache->addImageLinkObj( $nt );
 999                                         continue;
1000                                 }
1001 /* CHECK MERGE @@@
1002 #                       } else if ( 0 == strcmp( "##", substr( $link, 0, 2 ) ) ) {
1003 #                               $link = substr( $link, 2 );
1004 #                               $s .= "<a name=\"{$link}\">{$text}</a>{$trail}";
1005                         } else {
1006                                 if ( "" == $text ) { $text = $link; }
1007                                 # Hotspot:
1008                                 $s .= $sk->makeLink( $link, $text, "", $trail );
1009 */
1010                         }
1011                         if( $ns == $media ) {
1012                                 $s .= $sk->makeMediaLinkObj( $nt, $text ) . $trail;
1013                                 $wgLinkCache->addImageLinkObj( $nt );
1014                                 continue;
1015                         } elseif( $ns == $special ) {
1016                                 $s .= $sk->makeKnownLinkObj( $nt, $text, "", $trail );
1017                                 continue;
1018                         }
1019                         $s .= $sk->makeLinkObj( $nt, $text, "", $trail );
1020                 }
1021                 wfProfileOut( $fname );
1022                 return $s;
1023         }
1024
1025         # Some functions here used by doBlockLevels()
1026         #
1027         /* private */ function closeParagraph()
1028         {
1029                 $result = "";
1030                 if ( 0 != strcmp( "p", $this->mLastSection ) &&
1031                   0 != strcmp( "", $this->mLastSection ) ) {
1032                         $result = "</" . $this->mLastSection  . ">";
1033                 }
1034                 $this->mLastSection = "";
1035                 return $result;
1036         }
1037         # getCommon() returns the length of the longest common substring
1038         # of both arguments, starting at the beginning of both.
1039         #
1040         /* private */ function getCommon( $st1, $st2 )
1041         {
1042                 $fl = strlen( $st1 );
1043                 $shorter = strlen( $st2 );
1044                 if ( $fl < $shorter ) { $shorter = $fl; }
1045
1046                 for ( $i = 0; $i < $shorter; ++$i ) {
1047                         if ( $st1{$i} != $st2{$i} ) { break; }
1048                 }
1049                 return $i;
1050         }
1051         # These next three functions open, continue, and close the list
1052         # element appropriate to the prefix character passed into them.
1053         #
1054         /* private */ function openList( $char )
1055     {
1056                 $result = $this->closeParagraph();
1057
1058                 if ( "*" == $char ) { $result .= "<ul><li>"; }
1059                 else if ( "#" == $char ) { $result .= "<ol><li>"; }
1060                 else if ( ":" == $char ) { $result .= "<dl><dd>"; }
1061                 else if ( ";" == $char ) {
1062                         $result .= "<dl><dt>";
1063                         $this->mDTopen = true;
1064                 }
1065                 else { $result = "<!-- ERR 1 -->"; }
1066
1067                 return $result;
1068         }
1069
1070         /* private */ function nextItem( $char )
1071         {
1072                 if ( "*" == $char || "#" == $char ) { return "</li><li>"; }
1073                 else if ( ":" == $char || ";" == $char ) {
1074                         $close = "</dd>";
1075                         if ( $this->mDTopen ) { $close = "</dt>"; }
1076                         if ( ";" == $char ) {
1077                                 $this->mDTopen = true;
1078                                 return $close . "<dt>";
1079                         } else {
1080                                 $this->mDTopen = false;
1081                                 return $close . "<dd>";
1082                         }
1083                 }
1084                 return "<!-- ERR 2 -->";
1085         }
1086
1087         /* private */function closeList( $char )
1088         {
1089                 if ( "*" == $char ) { return "</li></ul>"; }
1090                 else if ( "#" == $char ) { return "</li></ol>"; }
1091                 else if ( ":" == $char ) {
1092                         if ( $this->mDTopen ) {
1093                                 $this->mDTopen = false;
1094                                 return "</dt></dl>";
1095                         } else {
1096                                 return "</dd></dl>";
1097                         }
1098                 }
1099                 return "<!-- ERR 3 -->";
1100         }
1101
1102         /* private */ function doBlockLevels( $text, $linestart )
1103         {
1104                 $fname = "OutputPage::doBlockLevels";
1105                 wfProfileIn( $fname );
1106                 # Parsing through the text line by line.  The main thing
1107                 # happening here is handling of block-level elements p, pre,
1108                 # and making lists from lines starting with * # : etc.
1109                 #
1110                 $a = explode( "\n", $text );
1111                 $text = $lastPref = "";
1112                 $this->mDTopen = $inBlockElem = false;
1113
1114                 if ( ! $linestart ) { $text .= array_shift( $a ); }
1115                 foreach ( $a as $t ) {
1116                         if ( "" != $text ) { $text .= "\n"; }
1117
1118                         $oLine = $t;
1119                         $opl = strlen( $lastPref );
1120                         $npl = strspn( $t, "*#:;" );
1121                         $pref = substr( $t, 0, $npl );
1122                         $pref2 = str_replace( ";", ":", $pref );
1123                         $t = substr( $t, $npl );
1124
1125                         if ( 0 != $npl && 0 == strcmp( $lastPref, $pref2 ) ) {
1126                                 $text .= $this->nextItem( substr( $pref, -1 ) );
1127
1128                                 if ( ";" == substr( $pref, -1 ) ) {
1129                                         $cpos = strpos( $t, ":" );
1130                                         if ( ! ( false === $cpos ) ) {
1131                                                 $term = substr( $t, 0, $cpos );
1132                                                 $text .= $term . $this->nextItem( ":" );
1133                                                 $t = substr( $t, $cpos + 1 );
1134                                         }
1135                                 }
1136                         } else if (0 != $npl || 0 != $opl) {
1137                                 $cpl = $this->getCommon( $pref, $lastPref );
1138
1139                                 while ( $cpl < $opl ) {
1140                                         $text .= $this->closeList( $lastPref{$opl-1} );
1141                                         --$opl;
1142                                 }
1143                                 if ( $npl <= $cpl && $cpl > 0 ) {
1144                                         $text .= $this->nextItem( $pref{$cpl-1} );
1145                                 }
1146                                 while ( $npl > $cpl ) {
1147                                         $char = substr( $pref, $cpl, 1 );
1148                                         $text .= $this->openList( $char );
1149
1150                                         if ( ";" == $char ) {
1151                                                 $cpos = strpos( $t, ":" );
1152                                                 if ( ! ( false === $cpos ) ) {
1153                                                         $term = substr( $t, 0, $cpos );
1154                                                         $text .= $term . $this->nextItem( ":" );
1155                                                         $t = substr( $t, $cpos + 1 );
1156                                                 }
1157                                         }
1158                                         ++$cpl;
1159                                 }
1160                                 $lastPref = $pref2;
1161                         }
1162                         if ( 0 == $npl ) { # No prefix--go to paragraph mode
1163                                 if ( preg_match(
1164                                   "/(<table|<blockquote|<h1|<h2|<h3|<h4|<h5|<h6)/i", $t ) ) {
1165                                         $text .= $this->closeParagraph();
1166                                         $inBlockElem = true;
1167                                 }
1168                                 if ( ! $inBlockElem ) {
1169                                         if ( " " == $t{0} ) {
1170                                                 $newSection = "pre";
1171                                                 # $t = wfEscapeHTML( $t );
1172                                         }
1173                                         else { $newSection = "p"; }
1174
1175                                         if ( 0 == strcmp( "", trim( $oLine ) ) ) {
1176                                                 $text .= $this->closeParagraph();
1177                                                 $text .= "<" . $newSection . ">";
1178                                         } else if ( 0 != strcmp( $this->mLastSection,
1179                                           $newSection ) ) {
1180                                                 $text .= $this->closeParagraph();
1181                                                 if ( 0 != strcmp( "p", $newSection ) ) {
1182                                                         $text .= "<" . $newSection . ">";
1183                                                 }
1184                                         }
1185                                         $this->mLastSection = $newSection;
1186                                 }
1187                                 if ( $inBlockElem &&
1188                                   preg_match( "/(<\\/table|<\\/blockquote|<\\/h1|<\\/h2|<\\/h3|<\\/h4|<\\/h5|<\\/h6)/i", $t ) ) {
1189                                         $inBlockElem = false;
1190                                 }
1191                         }
1192                         $text .= $t;
1193                 }
1194                 while ( $npl ) {
1195                         $text .= $this->closeList( $pref2{$npl-1} );
1196                         --$npl;
1197                 }
1198                 if ( "" != $this->mLastSection ) {
1199                         if ( "p" != $this->mLastSection ) {
1200                                 $text .= "</" . $this->mLastSection . ">";
1201                         }
1202                         $this->mLastSection = "";
1203                 }
1204                 wfProfileOut( $fname );
1205                 return $text;
1206         }
1207
1208         /* private */ function replaceVariables( $text )
1209         {
1210                 global $wgLang;
1211                 $fname = "OutputPage::replaceVariables";
1212                 wfProfileIn( $fname );
1213
1214
1215                 # Basic variables
1216                 # See Language.php for the definition of each magic word
1217
1218                 # As with sigs, this uses the server's local time -- ensure
1219                 # this is appropriate for your audience!
1220                 $v = date( "m" );
1221                 $mw =& MagicWord::get( MAG_CURRENTMONTH );
1222                 $text = $mw->replace( $v, $text );
1223
1224                 $v = $wgLang->getMonthName( date( "n" ) );
1225                 $mw =& MagicWord::get( MAG_CURRENTMONTHNAME );
1226                 $text = $mw->replace( $v, $text );
1227
1228                 $v = $wgLang->getMonthNameGen( date( "n" ) );
1229                 $mw =& MagicWord::get( MAG_CURRENTMONTHNAMEGEN );
1230                 $text = $mw->replace( $v, $text );
1231
1232                 $v = date( "j" );
1233                 $mw = MagicWord::get( MAG_CURRENTDAY );
1234                 $text = $mw->replace( $v, $text );
1235
1236                 $v = $wgLang->getWeekdayName( date( "w" )+1 );
1237                 $mw =& MagicWord::get( MAG_CURRENTDAYNAME );
1238                 $text = $mw->replace( $v, $text );
1239
1240                 $v = date( "Y" );
1241                 $mw =& MagicWord::get( MAG_CURRENTYEAR );
1242                 $text = $mw->replace( $v, $text );
1243
1244                 $v = $wgLang->time( wfTimestampNow(), false );
1245                 $mw =& MagicWord::get( MAG_CURRENTTIME );
1246                 $text = $mw->replace( $v, $text );
1247
1248                 $mw =& MagicWord::get( MAG_NUMBEROFARTICLES );
1249                 if ( $mw->match( $text ) ) {
1250                         $v = wfNumberOfArticles();
1251                         $text = $mw->replace( $v, $text );
1252                 }
1253
1254                 # "Variables" with an additional parameter e.g. {{MSG:wikipedia}}
1255                 # The callbacks are at the bottom of this file
1256                 $mw =& MagicWord::get( MAG_MSG );
1257                 $text = $mw->substituteCallback( $text, "wfReplaceMsgVar" );
1258
1259                 $mw =& MagicWord::get( MAG_MSGNW );
1260                 $text = $mw->substituteCallback( $text, "wfReplaceMsgnwVar" );
1261
1262                 wfProfileOut( $fname );
1263                 return $text;
1264         }
1265
1266         # Cleans up HTML, removes dangerous tags and attributes
1267         /* private */ function removeHTMLtags( $text )
1268         {
1269                 $fname = "OutputPage::removeHTMLtags";
1270                 wfProfileIn( $fname );
1271                 $htmlpairs = array( # Tags that must be closed
1272                         "b", "i", "u", "font", "big", "small", "sub", "sup", "h1",
1273                         "h2", "h3", "h4", "h5", "h6", "cite", "code", "em", "s",
1274                         "strike", "strong", "tt", "var", "div", "center",
1275                         "blockquote", "ol", "ul", "dl", "table", "caption", "pre",
1276                         "ruby", "rt" , "rb" , "rp"
1277                 );
1278                 $htmlsingle = array(
1279                         "br", "p", "hr", "li", "dt", "dd"
1280                 );
1281                 $htmlnest = array( # Tags that can be nested--??
1282                         "table", "tr", "td", "th", "div", "blockquote", "ol", "ul",
1283                         "dl", "font", "big", "small", "sub", "sup"
1284                 );
1285                 $tabletags = array( # Can only appear inside table
1286                         "td", "th", "tr"
1287                 );
1288
1289                 $htmlsingle = array_merge( $tabletags, $htmlsingle );
1290                 $htmlelements = array_merge( $htmlsingle, $htmlpairs );
1291
1292                 $htmlattrs = $this->getHTMLattrs () ;
1293
1294                 # Remove HTML comments
1295                 $text = preg_replace( "/<!--.*-->/sU", "", $text );
1296
1297                 $bits = explode( "<", $text );
1298                 $text = array_shift( $bits );
1299                 $tagstack = array(); $tablestack = array();
1300
1301                 foreach ( $bits as $x ) {
1302                         $prev = error_reporting( E_ALL & ~( E_NOTICE | E_WARNING ) );
1303                         preg_match( "/^(\\/?)(\\w+)([^>]*)(\\/{0,1}>)([^<]*)$/",
1304                           $x, $regs );
1305                         list( $qbar, $slash, $t, $params, $brace, $rest ) = $regs;
1306                         error_reporting( $prev );
1307
1308                         $badtag = 0 ;
1309                         if ( in_array( $t = strtolower( $t ), $htmlelements ) ) {
1310                                 # Check our stack
1311                                 if ( $slash ) {
1312                                         # Closing a tag...
1313                                         if ( ! in_array( $t, $htmlsingle ) &&
1314                                           ( $ot = array_pop( $tagstack ) ) != $t ) {
1315                                                 array_push( $tagstack, $ot );
1316                                                 $badtag = 1;
1317                                         } else {
1318                                                 if ( $t == "table" ) {
1319                                                         $tagstack = array_pop( $tablestack );
1320                                                 }
1321                                                 $newparams = "";
1322                                         }
1323                                 } else {
1324                                         # Keep track for later
1325                                         if ( in_array( $t, $tabletags ) &&
1326                                           ! in_array( "table", $tagstack ) ) {
1327                                                 $badtag = 1;
1328                                         } else if ( in_array( $t, $tagstack ) &&
1329                                           ! in_array ( $t , $htmlnest ) ) {
1330                                                 $badtag = 1 ;
1331                                         } else if ( ! in_array( $t, $htmlsingle ) ) {
1332                                                 if ( $t == "table" ) {
1333                                                         array_push( $tablestack, $tagstack );
1334                                                         $tagstack = array();
1335                                                 }
1336                                                 array_push( $tagstack, $t );
1337                                         }
1338                                         # Strip non-approved attributes from the tag
1339                                         $newparams = preg_replace(
1340                                           "/(\\w+)(\\s*=\\s*([^\\s\">]+|\"[^\">]*\"))?/e",
1341                                           "(in_array(strtolower(\"\$1\"),\$htmlattrs)?(\"\$1\".((\"x\$3\" != \"x\")?\"=\$3\":'')):'')",
1342                                           $params);
1343                                 }
1344                                 if ( ! $badtag ) {
1345                                         $rest = str_replace( ">", "&gt;", $rest );
1346                                         $text .= "<$slash$t$newparams$brace$rest";
1347                                         continue;
1348                                 }
1349                         }
1350                         $text .= "&lt;" . str_replace( ">", "&gt;", $x);
1351                 }
1352                 # Close off any remaining tags
1353                 while ( $t = array_pop( $tagstack ) ) {
1354                         $text .= "</$t>\n";
1355                         if ( $t == "table" ) { $tagstack = array_pop( $tablestack ); }
1356                 }
1357                 wfProfileOut( $fname );
1358                 return $text;
1359         }
1360
1361
1362 /*
1363  *
1364  * This function accomplishes several tasks:
1365  * 1) Auto-number headings if that option is enabled
1366  * 2) Add an [edit] link to sections for logged in users who have enabled the option
1367  * 3) Add a Table of contents on the top for users who have enabled the option
1368  * 4) Auto-anchor headings
1369  *
1370  * It loops through all headlines, collects the necessary data, then splits up the
1371  * string and re-inserts the newly formatted headlines.
1372  *
1373  * */
1374         /* private */ function formatHeadings( $text )
1375         {
1376                 global $wgUser,$wgArticle,$wgTitle,$wpPreview;
1377                 $nh=$wgUser->getOption( "numberheadings" );
1378                 $st=$wgUser->getOption( "showtoc" );
1379                 if(!$wgTitle->userCanEdit()) {
1380                         $es=0;
1381                         $esr=0;
1382                 } else {
1383                         $es=$wgUser->getID() && $wgUser->getOption( "editsection" );
1384                         $esr=$wgUser->getID() && $wgUser->getOption( "editsectiononrightclick" );
1385                 }
1386
1387                 # Inhibit editsection links if requested in the page
1388                 if ($es) {
1389                         $esw=& MagicWord::get(MAG_NOEDITSECTION);
1390                         if ($esw->matchAndRemove( $text )) {
1391                                 $es=0;
1392                         }
1393                 }
1394                 # if the string __NOTOC__ (not case-sensitive) occurs in the HTML,
1395                 # do not add TOC
1396                 $mw =& MagicWord::get( MAG_NOTOC );
1397                 if ($mw->matchAndRemove( $text ))
1398                 {
1399                         $st = 0;
1400                 }
1401
1402                 # never add the TOC to the Main Page. This is an entry page that should not
1403                 # be more than 1-2 screens large anyway
1404                 if($wgTitle->getPrefixedText()==wfMsg("mainpage")) {$st=0;}
1405
1406                 # We need this to perform operations on the HTML
1407                 $sk=$wgUser->getSkin();
1408
1409                 # Get all headlines for numbering them and adding funky stuff like [edit]
1410                 # links
1411                 preg_match_all("/<H([1-6])(.*?>)(.*?)<\/H[1-6]>/i",$text,$matches);
1412
1413                 # headline counter
1414                 $c=0;
1415
1416                 # Ugh .. the TOC should have neat indentation levels which can be
1417                 # passed to the skin functions. These are determined here
1418                 foreach($matches[3] as $headline) {
1419                         if($level) { $prevlevel=$level;}
1420                         $level=$matches[1][$c];
1421                         if(($nh||$st) && $prevlevel && $level>$prevlevel) {
1422
1423                                 $h[$level]=0; // reset when we enter a new level
1424                                 $toc.=$sk->tocIndent($level-$prevlevel);
1425                                 $toclevel+=$level-$prevlevel;
1426
1427                         }
1428                         if(($nh||$st) && $level<$prevlevel) {
1429                                 $h[$level+1]=0; // reset when we step back a level
1430                                 $toc.=$sk->tocUnindent($prevlevel-$level);
1431                                 $toclevel-=$prevlevel-$level;
1432
1433                         }
1434                         $h[$level]++; // count number of headlines for each level
1435
1436                         if($nh||$st) {
1437                                 for($i=1;$i<=$level;$i++) {
1438                                         if($h[$i]) {
1439                                                 if($dot) {$numbering.=".";}
1440                                                 $numbering.=$h[$i];
1441                                                 $dot=1;
1442                                         }
1443                                 }
1444                         }
1445
1446                         // The canonized header is a version of the header text safe to use for links
1447
1448                         $canonized_headline=preg_replace("/<.*?>/","",$headline); // strip out HTML
1449                         $tocline=$canonized_headline;
1450                         $canonized_headline=str_replace('"',"",$canonized_headline);
1451                         $canonized_headline=str_replace(" ","_",trim($canonized_headline));
1452                         $refer[$c]=$canonized_headline;
1453                         $refers[$canonized_headline]++;  // count how many in assoc. array so we can track dupes in anchors
1454                         $refcount[$c]=$refers[$canonized_headline];
1455
1456             // Prepend the number to the heading text
1457
1458                         if($nh||$st) {
1459                                 $tocline=$numbering ." ". $tocline;
1460
1461                                 // Don't number the heading if it is the only one (looks silly)
1462                                 if($nh && count($matches[3]) > 1) {
1463                                         $headline=$numbering . " " . $headline; // the two are different if the line contains a link
1464                                 }
1465                         }
1466
1467                         // Create the anchor for linking from the TOC to the section
1468
1469                         $anchor=$canonized_headline;
1470                         if($refcount[$c]>1) {$anchor.="_".$refcount[$c];}
1471                         if($st) {
1472                                 $toc.=$sk->tocLine($anchor,$tocline,$toclevel);
1473                         }
1474                         if($es && !isset($wpPreview)) {
1475                                 $head[$c].=$sk->editSectionLink($c+1);
1476                         }
1477
1478                         // Put it all together
1479
1480                         $head[$c].="<h".$level.$matches[2][$c]
1481                          ."<a name=\"".$anchor."\">"
1482                          .$headline
1483                          ."</a>"
1484                          ."</h".$level.">";
1485
1486                         // Add the edit section link
1487
1488                         if($esr && !isset($wpPreview)) {
1489                                 $head[$c]=$sk->editSectionScript($c+1,$head[$c]);
1490                         }
1491
1492                         $numbering="";
1493                         $c++;
1494                         $dot=0;
1495                 }
1496
1497                 if($st) {
1498                         $toclines=$c;
1499                         $toc.=$sk->tocUnindent($toclevel);
1500                         $toc=$sk->tocTable($toc);
1501                 }
1502
1503                 // split up and insert constructed headlines
1504
1505                 $blocks=preg_split("/<H[1-6].*?>.*?<\/H[1-6]>/i",$text);
1506                 $i=0;
1507
1508                 foreach($blocks as $block) {
1509                         if(($es) && !isset($wpPreview) && $c>0 && $i==0) {
1510                             # This is the [edit] link that appears for the top block of text when
1511                                 # section editing is enabled
1512                                 $full.=$sk->editSectionLink(0);
1513                         }
1514                         $full.=$block;
1515                         if($st && $toclines>3 && !$i) {
1516                                 # Let's add a top anchor just in case we want to link to the top of the page
1517                                 $full="<a name=\"top\"></a>".$full.$toc;
1518                         }
1519
1520                         $full.=$head[$i];
1521                         $i++;
1522                 }
1523
1524                 return $full;
1525         }
1526
1527         /* private */ function magicISBN( $text )
1528         {
1529                 global $wgLang;
1530
1531                 $a = split( "ISBN ", " $text" );
1532                 if ( count ( $a ) < 2 ) return $text;
1533                 $text = substr( array_shift( $a ), 1);
1534                 $valid = "0123456789-ABCDEFGHIJKLMNOPQRSTUVWXYZ";
1535
1536                 foreach ( $a as $x ) {
1537                         $isbn = $blank = "" ;
1538                         while ( " " == $x{0} ) {
1539                                 $blank .= " ";
1540                                 $x = substr( $x, 1 );
1541                         }
1542                         while ( strstr( $valid, $x{0} ) != false ) {
1543                                 $isbn .= $x{0};
1544                                 $x = substr( $x, 1 );
1545                         }
1546                         $num = str_replace( "-", "", $isbn );
1547                         $num = str_replace( " ", "", $num );
1548
1549                         if ( "" == $num ) {
1550                                 $text .= "ISBN $blank$x";
1551                         } else {
1552                                 $text .= "<a href=\"" . wfLocalUrlE( $wgLang->specialPage(
1553                                   "Booksources"), "isbn={$num}" ) . "\" class=\"internal\">ISBN $isbn</a>";
1554                                 $text .= $x;
1555                         }
1556                 }
1557                 return $text;
1558         }
1559
1560         /* private */ function magicRFC( $text )
1561         {
1562                 return $text;
1563         }
1564
1565         /* private */ function headElement()
1566         {
1567                 global $wgDocType, $wgDTD, $wgUser, $wgLanguageCode, $wgOutputEncoding, $wgLang;
1568
1569                 $ret = "<!DOCTYPE HTML PUBLIC \"$wgDocType\"\n        \"$wgDTD\">\n";
1570
1571                 if ( "" == $this->mHTMLtitle ) {
1572                         $this->mHTMLtitle = $this->mPagetitle;
1573                 }
1574                 $rtl = $wgLang->isRTL() ? " dir='RTL'" : "";
1575                 $ret .= "<html lang=\"$wgLanguageCode\"$rtl><head><title>{$this->mHTMLtitle}</title>\n";
1576                 array_push( $this->mMetatags, array( "http:Content-type", "text/html; charset={$wgOutputEncoding}" ) );
1577                 foreach ( $this->mMetatags as $tag ) {
1578                         if ( 0 == strcasecmp( "http:", substr( $tag[0], 0, 5 ) ) ) {
1579                                 $a = "http-equiv";
1580                                 $tag[0] = substr( $tag[0], 5 );
1581                         } else {
1582                                 $a = "name";
1583                         }
1584                         $ret .= "<meta $a=\"{$tag[0]}\" content=\"{$tag[1]}\">\n";
1585                 }
1586                 $p = $this->mRobotpolicy;
1587                 if ( "" == $p ) { $p = "index,follow"; }
1588                 $ret .= "<meta name=\"robots\" content=\"$p\">\n";
1589
1590                 if ( count( $this->mKeywords ) > 0 ) {
1591                         $ret .= "<meta name=\"keywords\" content=\"" .
1592                           implode( ",", $this->mKeywords ) . "\">\n";
1593                 }
1594                 foreach ( $this->mLinktags as $tag ) {
1595                         $ret .= "<link ";
1596                         if ( "" != $tag[0] ) { $ret .= "rel=\"{$tag[0]}\" "; }
1597                         if ( "" != $tag[1] ) { $ret .= "rev=\"{$tag[1]}\" "; }
1598                         $ret .= "href=\"{$tag[2]}\">\n";
1599                 }
1600                 $sk = $wgUser->getSkin();
1601                 $ret .= $sk->getHeadScripts();
1602                 $ret .= $sk->getUserStyles();
1603
1604                 $ret .= "</head>\n";
1605                 return $ret;
1606         }
1607 }
1608
1609 # Regex callbacks, used in OutputPage::replaceVariables
1610
1611 # Just get rid of the dangerous stuff
1612 # Necessary because replaceVariables is called after removeHTMLtags,
1613 # and message text can come from any user
1614 function wfReplaceMsgVar( $matches ) {
1615         global $wgOut;
1616         $text = $wgOut->removeHTMLtags( wfMsg( $matches[1] ) );
1617         return $text;
1618 }
1619
1620 # Effective <nowiki></nowiki>
1621 # Not real <nowiki> because this is called after nowiki sections are processed
1622 function wfReplaceMsgnwVar( $matches ) {
1623         $text = wfEscapeWikiText( wfMsg( $matches[1] ) );
1624         return $text;
1625 }
1626
1627 ?>