includes/Title.php

   1 <?php
   2 # See title.doc
   3
   4 $wgTitleInterwikiCache = array();
   5
   6 # Title class
   7 #
   8 # * Represents a title, which may contain an interwiki designation or namespace
   9 # * Can fetch various kinds of data from the database, albeit inefficiently.
  10 #
  11 class Title {
  12         # All member variables should be considered private
  13         # Please use the accessor functions
  14
  15         var $mTextform;           # Text form (spaces not underscores) of the main part
  16         var $mUrlform;            # URL-encoded form of the main part
  17         var $mDbkeyform;          # Main part with underscores
  18         var $mNamespace;          # Namespace index, i.e. one of the NS_xxxx constants
  19         var $mInterwiki;          # Interwiki prefix (or null string)
  20         var $mFragment;           # Title fragment (i.e. the bit after the #)
  21         var $mArticleID;          # Article ID, fetched from the link cache on demand
  22         var $mRestrictions;       # Array of groups allowed to edit this article
  23                               # Only null or "sysop" are supported
  24         var $mRestrictionsLoaded; # Boolean for initialisation on demand
  25         var $mPrefixedText;       # Text form including namespace/interwiki, initialised on demand
  26         var $mDefaultNamespace;   # Namespace index when there is no namespace
  27                               # Zero except in {{transclusion}} tags
  28
  29 #----------------------------------------------------------------------------
  30 #   Construction
  31 #----------------------------------------------------------------------------
  32
  33         /* private */ function Title()
  34         {
  35                 $this->mInterwiki = $this->mUrlform =
  36                 $this->mTextform = $this->mDbkeyform = "";
  37                 $this->mArticleID = -1;
  38                 $this->mNamespace = 0;
  39                 $this->mRestrictionsLoaded = false;
  40                 $this->mRestrictions = array();
  41         $this->mDefaultNamespace = 0;
  42         }
  43
  44         # From a prefixed DB key
  45         /* static */ function newFromDBkey( $key )
  46         {
  47                 $t = new Title();
  48                 $t->mDbkeyform = $key;
  49                 if( $t->secureAndSplit() )
  50                         return $t;
  51                 else
  52                         return NULL;
  53         }
  54
  55         # From text, such as what you would find in a link
  56         /* static */ function newFromText( $text, $defaultNamespace = 0 )
  57         {
  58                 $fname = "Title::newFromText";
  59                 wfProfileIn( $fname );
  60
  61                 if( is_object( $text ) ) {
  62                         wfDebugDieBacktrace( "Called with object instead of string." );
  63                 }
  64                 global $wgInputEncoding;
  65                 $text = do_html_entity_decode( $text, ENT_COMPAT, $wgInputEncoding );
  66
  67                 $text = wfMungeToUtf8( $text );
  68
  69
  70                 # What was this for? TS 2004-03-03
  71                 # $text = urldecode( $text );
  72
  73                 $t = new Title();
  74                 $t->mDbkeyform = str_replace( " ", "_", $text );
  75                 $t->mDefaultNamespace = $defaultNamespace;
  76
  77                 wfProfileOut( $fname );
  78                 if ( !is_object( $t ) ) {
  79                         var_dump( debug_backtrace() );
  80                 }
  81                 if( $t->secureAndSplit() ) {
  82                         return $t;
  83                 } else {
  84                         return NULL;
  85                 }
  86         }
  87
  88         # From a URL-encoded title
  89         /* static */ function newFromURL( $url )
  90         {
  91                 global $wgLang, $wgServer, $wgIsMySQL, $wgIsPg;
  92                 $t = new Title();
  93
  94                 # For compatibility with old buggy URLs. "+" is not valid in titles,
  95                 # but some URLs used it as a space replacement and they still come
  96                 # from some external search tools.
  97                 $s = str_replace( "+", " ", $url );
  98
  99                 # For links that came from outside, check for alternate/legacy
 100                 # character encoding.
 101                 wfDebug( "Servr: $wgServer\n" );
 102                 if( empty( $_SERVER["HTTP_REFERER"] ) ||
 103                         strncmp($wgServer, $_SERVER["HTTP_REFERER"], strlen( $wgServer ) ) )
 104                 {
 105                         $s = $wgLang->checkTitleEncoding( $s );
 106                 } else {
 107                         wfDebug( "Refer: {$_SERVER['HTTP_REFERER']}\n" );
 108                 }
 109
 110                 $t->mDbkeyform = str_replace( " ", "_", $s );
 111                 if( $t->secureAndSplit() ) {
 112                         # check that lenght of title is < cur_title size
 113                         if ($wgIsMySQL) {
 114                                 $sql = "SHOW COLUMNS FROM cur LIKE \"cur_title\";";
 115                                 $cur_title_object = wfFetchObject(wfQuery( $sql, DB_READ ));
 116
 117                                 preg_match( "/\((.*)\)/", $cur_title_object->Type, $cur_title_type);
 118                                 $cur_title_size=$cur_title_type[1];
 119                         } else {
 120                                 /* midom:FIXME pg_field_type does not return varchar length
 121                                    assume 255 */
 122                                 $cur_title_size=255;
 123                         }
 124
 125                         if (strlen($t->mDbkeyform) > $cur_title_size ) {
 126                                 return NULL;
 127                         }
 128
 129                         return $t;
 130                 } else {
 131                         return NULL;
 132                 }
 133         }
 134
 135         # From a cur_id
 136         # This is inefficiently implemented, the cur row is requested but not
 137         # used for anything else
 138         /* static */ function newFromID( $id )
 139         {
 140                 $fname = "Title::newFromID";
 141                 $row = wfGetArray( "cur", array( "cur_namespace", "cur_title" ),
 142                         array( "cur_id" => $id ), $fname );
 143                 if ( $row !== false ) {
 144                         $title = Title::makeTitle( $row->cur_namespace, $row->cur_title );
 145                 } else {
 146                         $title = NULL;
 147                 }
 148                 return $title;
 149         }
 150
 151         # From a namespace index and a DB key
 152         /* static */ function makeTitle( $ns, $title )
 153         {
 154                 $t = new Title();
 155                 $t->mDbkeyform = Title::makeName( $ns, $title );
 156                 if( $t->secureAndSplit() ) {
 157                         return $t;
 158                 } else {
 159                         return NULL;
 160                 }
 161         }
 162
 163         function newMainPage()
 164         {
 165                 return Title::newFromText( wfMsg( "mainpage" ) );
 166         }
 167
 168 #----------------------------------------------------------------------------
 169 #       Static functions
 170 #----------------------------------------------------------------------------
 171
 172         # Get the prefixed DB key associated with an ID
 173         /* static */ function nameOf( $id )
 174         {
 175                 $sql = "SELECT cur_namespace,cur_title FROM cur WHERE " .
 176                   "cur_id={$id}";
 177                 $res = wfQuery( $sql, DB_READ, "Article::nameOf" );
 178                 if ( 0 == wfNumRows( $res ) ) { return NULL; }
 179
 180                 $s = wfFetchObject( $res );
 181                 $n = Title::makeName( $s->cur_namespace, $s->cur_title );
 182                 return $n;
 183         }
 184
 185         # Get a regex character class describing the legal characters in a link
 186         /* static */ function legalChars()
 187         {
 188                 # Missing characters:
 189                 #  * []|# Needed for link syntax
 190                 #  * % and + are corrupted by Apache when they appear in the path
 191                 #  * % seems to work though
 192                 #
 193                 # Theoretically 0x80-0x9F of ISO 8859-1 should be disallowed, but
 194                 # this breaks interlanguage links
 195
 196                 $set = " %!\"$&'()*,\\-.\\/0-9:;<=>?@A-Z\\\\^_`a-z{}~\\x80-\\xFF";
 197                 return $set;
 198         }
 199
 200         # Returns a stripped-down a title string ready for the search index
 201         # Takes a namespace index and a text-form main part
 202         /* static */ function indexTitle( $ns, $title )
 203         {
 204                 global $wgDBminWordLen, $wgLang;
 205
 206                 $lc = SearchEngine::legalSearchChars() . "&#;";
 207                 $t = $wgLang->stripForSearch( $title );
 208                 $t = preg_replace( "/[^{$lc}]+/", " ", $t );
 209                 $t = strtolower( $t );
 210
 211                 # Handle 's, s'
 212                 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
 213                 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
 214
 215                 $t = preg_replace( "/\\s+/", " ", $t );
 216
 217                 if ( $ns == Namespace::getImage() ) {
 218                         $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
 219                 }
 220                 return trim( $t );
 221         }
 222
 223         # Make a prefixed DB key from a DB key and a namespace index
 224         /* static */ function makeName( $ns, $title )
 225         {
 226                 global $wgLang;
 227
 228                 $n = $wgLang->getNsText( $ns );
 229                 if ( "" == $n ) { return $title; }
 230                 else { return "{$n}:{$title}"; }
 231         }
 232
 233         # Arguably static
 234         # Returns the URL associated with an interwiki prefix
 235         # The URL contains $1, which is replaced by the title
 236         function getInterwikiLink( $key )
 237         {
 238                 global $wgMemc, $wgDBname, $wgInterwikiExpiry, $wgTitleInterwikiCache;
 239
 240                 $k = "$wgDBname:interwiki:$key";
 241
 242                 if( array_key_exists( $k, $wgTitleInterwikiCache ) )
 243                         return $wgTitleInterwikiCache[$k]->iw_url;
 244
 245                 $s = $wgMemc->get( $k );
 246                 # Ignore old keys with no iw_local
 247                 if( $s && isset( $s->iw_local ) ) {
 248                         $wgTitleInterwikiCache[$k] = $s;
 249                         return $s->iw_url;
 250                 }
 251                 $dkey = wfStrencode( $key );
 252                 $query = "SELECT iw_url,iw_local FROM interwiki WHERE iw_prefix='$dkey'";
 253                 $res = wfQuery( $query, DB_READ, "Title::getInterwikiLink" );
 254                 if(!$res) return "";
 255
 256                 $s = wfFetchObject( $res );
 257                 if(!$s) {
 258                         $s = (object)false;
 259                         $s->iw_url = "";
 260                 }
 261                 $wgMemc->set( $k, $s, $wgInterwikiExpiry );
 262                 $wgTitleInterwikiCache[$k] = $s;
 263                 return $s->iw_url;
 264         }
 265
 266         function isLocal() {
 267                 global $wgTitleInterwikiCache, $wgDBname;
 268
 269                 if ( $this->mInterwiki != "" ) {
 270                         # Make sure key is loaded into cache
 271                         $this->getInterwikiLink( $this->mInterwiki );
 272                         $k = "$wgDBname:interwiki:" . $this->mInterwiki;
 273                         return (bool)($wgTitleInterwikiCache[$k]->iw_local);
 274                 } else {
 275                         return true;
 276                 }
 277         }
 278
 279         # Update the cur_touched field for an array of title objects
 280         # Inefficient unless the IDs are already loaded into the link cache
 281         /* static */ function touchArray( $titles, $timestamp = "" ) {
 282                 if ( count( $titles ) == 0 ) {
 283                         return;
 284                 }
 285                 if ( $timestamp == "" ) {
 286                         $timestamp = wfTimestampNow();
 287                 }
 288                 $sql = "UPDATE cur SET cur_touched='{$timestamp}' WHERE cur_id IN (";
 289                 $first = true;
 290
 291                 foreach ( $titles as $title ) {
 292                         if ( ! $first ) {
 293                                 $sql .= ",";
 294                         }
 295
 296                         $first = false;
 297                         $sql .= $title->getArticleID();
 298                 }
 299                 $sql .= ")";
 300                 if ( ! $first ) {
 301                         wfQuery( $sql, DB_WRITE, "Title::touchArray" );
 302                 }
 303         }
 304
 305 #----------------------------------------------------------------------------
 306 #       Other stuff
 307 #----------------------------------------------------------------------------
 308
 309         # Simple accessors
 310         # See the definitions at the top of this file
 311
 312         function getText() { return $this->mTextform; }
 313         function getPartialURL() { return $this->mUrlform; }
 314         function getDBkey() { return $this->mDbkeyform; }
 315         function getNamespace() { return $this->mNamespace; }
 316         function setNamespace( $n ) { $this->mNamespace = $n; }
 317         function getInterwiki() { return $this->mInterwiki; }
 318         function getFragment() { return $this->mFragment; }
 319         function getDefaultNamespace() { return $this->mDefaultNamespace; }
 320
 321         # Get title for search index
 322         function getIndexTitle()
 323         {
 324                 return Title::indexTitle( $this->mNamespace, $this->mTextform );
 325         }
 326
 327         # Get prefixed title with underscores
 328         function getPrefixedDBkey()
 329         {
 330                 $s = $this->prefix( $this->mDbkeyform );
 331                 $s = str_replace( " ", "_", $s );
 332                 return $s;
 333         }
 334
 335         # Get prefixed title with spaces
 336         # This is the form usually used for display
 337         function getPrefixedText()
 338         {
 339                 if ( empty( $this->mPrefixedText ) ) {
 340                         $s = $this->prefix( $this->mTextform );
 341                         $s = str_replace( "_", " ", $s );
 342                         $this->mPrefixedText = $s;
 343                 }
 344                 return $this->mPrefixedText;
 345         }
 346
 347         # Get a URL-encoded title (not an actual URL) including interwiki
 348         function getPrefixedURL()
 349         {
 350                 $s = $this->prefix( $this->mDbkeyform );
 351                 $s = str_replace( " ", "_", $s );
 352
 353                 $s = wfUrlencode ( $s ) ;
 354
 355                 # Cleaning up URL to make it look nice -- is this safe?
 356                 $s = preg_replace( "/%3[Aa]/", ":", $s );
 357                 $s = preg_replace( "/%2[Ff]/", "/", $s );
 358                 $s = str_replace( "%28", "(", $s );
 359                 $s = str_replace( "%29", ")", $s );
 360
 361                 return $s;
 362         }
 363
 364         # Get a real URL referring to this title, with interwiki link and fragment
 365         function getFullURL( $query = "" )
 366         {
 367                 global $wgLang, $wgArticlePath, $wgServer, $wgScript;
 368
 369                 if ( "" == $this->mInterwiki ) {
 370                         $p = $wgArticlePath;
 371                         return $wgServer . $this->getLocalUrl( $query );
 372                 }
 373
 374                 $p = $this->getInterwikiLink( $this->mInterwiki );
 375                 $n = $wgLang->getNsText( $this->mNamespace );
 376                 if ( "" != $n ) { $n .= ":"; }
 377                 $u = str_replace( "$1", $n . $this->mUrlform, $p );
 378                 if ( "" != $this->mFragment ) {
 379                         $u .= "#" . wfUrlencode( $this->mFragment );
 380                 }
 381                 return $u;
 382         }
 383
 384         # Get a URL with an optional query string, no fragment
 385         # * If $query=="", it will use $wgArticlePath
 386         # * Returns a full for an interwiki link, loses any query string
 387         # * Optionally adds the server and escapes for HTML
 388         # * Setting $query to "-" makes an old-style URL with nothing in the
 389         #   query except a title
 390
 391         function getURL() {
 392                 die( "Call to obsolete obsolete function Title::getURL()" );
 393         }
 394
 395         function getLocalURL( $query = "" )
 396         {
 397                 global $wgLang, $wgArticlePath, $wgScript;
 398
 399                 if ( $this->isExternal() ) {
 400                         return $this->getFullURL();
 401                 }
 402
 403                 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
 404                 if ( $query == "" ) {
 405                         $url = str_replace( "$1", $dbkey, $wgArticlePath );
 406                 } else {
 407                         if ( $query == "-" ) {
 408                                 $query = "";
 409                         }
 410                         if ( $wgScript != "" ) {
 411                                 $url = "{$wgScript}?title={$dbkey}&{$query}";
 412                         } else {
 413                                 # Top level wiki
 414                                 $url = "/{$dbkey}?{$query}";
 415                         }
 416                 }
 417                 return $url;
 418         }
 419
 420         function escapeLocalURL( $query = "" ) {
 421                 return wfEscapeHTML( $this->getLocalURL( $query ) );
 422         }
 423
 424         function escapeFullURL( $query = "" ) {
 425                 return wfEscapeHTML( $this->getFullURL( $query ) );
 426         }
 427
 428         function getInternalURL( $query = "" ) {
 429                 # Used in various Squid-related code, in case we have a different
 430                 # internal hostname for the server than the exposed one.
 431                 global $wgInternalServer;
 432                 return $wgInternalServer . $this->getLocalURL( $query );
 433         }
 434
 435         # Get the edit URL, or a null string if it is an interwiki link
 436         function getEditURL()
 437         {
 438                 global $wgServer, $wgScript;
 439
 440                 if ( "" != $this->mInterwiki ) { return ""; }
 441                 $s = $this->getLocalURL( "action=edit" );
 442
 443                 return $s;
 444         }
 445
 446         # Get HTML-escaped displayable text
 447         # For the title field in <a> tags
 448         function getEscapedText()
 449         {
 450                 return wfEscapeHTML( $this->getPrefixedText() );
 451         }
 452
 453         # Is the title interwiki?
 454         function isExternal() { return ( "" != $this->mInterwiki ); }
 455
 456         # Does the title correspond to a protected article?
 457         function isProtected()
 458         {
 459                 if ( -1 == $this->mNamespace ) { return true; }
 460                 $a = $this->getRestrictions();
 461                 if ( in_array( "sysop", $a ) ) { return true; }
 462                 return false;
 463         }
 464
 465         # Is the page a log page, i.e. one where the history is messed up by
 466         # LogPage.php? This used to be used for suppressing diff links in recent
 467         # changes, but now that's done by setting a flag in the recentchanges
 468         # table. Hence, this probably is no longer used.
 469         function isLog()
 470         {
 471                 if ( $this->mNamespace != Namespace::getWikipedia() ) {
 472                         return false;
 473                 }
 474                 if ( ( 0 == strcmp( wfMsg( "uploadlogpage" ), $this->mDbkeyform ) ) ||
 475                   ( 0 == strcmp( wfMsg( "dellogpage" ), $this->mDbkeyform ) ) ) {
 476                         return true;
 477                 }
 478                 return false;
 479         }
 480
 481         # Is $wgUser is watching this page?
 482         function userIsWatching()
 483         {
 484                 global $wgUser;
 485
 486                 if ( -1 == $this->mNamespace ) { return false; }
 487                 if ( 0 == $wgUser->getID() ) { return false; }
 488
 489                 return $wgUser->isWatched( $this );
 490         }
 491
 492         # Can $wgUser edit this page?
 493         function userCanEdit()
 494         {
 495                 global $wgUser;
 496                 if ( -1 == $this->mNamespace ) { return false; }
 497                 if ( NS_MEDIAWIKI == $this->mNamespace && !$wgUser->isSysop() ) { return false; }
 498                 # if ( 0 == $this->getArticleID() ) { return false; }
 499                 if ( $this->mDbkeyform == "_" ) { return false; }
 500                 # protect global styles and js
 501                 if ( NS_MEDIAWIKI == $this->mNamespace
 502                      && preg_match("/\\.(css|js)$/", $this->mTextform )
 503                      && !$wgUser->isSysop() )
 504                 { return false; }
 505                 //if ( $this->isCssJsSubpage() and !$this->userCanEditCssJsSubpage() ) { return false; }
 506                 # protect css/js subpages of user pages
 507                 # XXX: this might be better using restrictions
 508                 # XXX: Find a way to work around the php bug that prevents using $this->userCanEditCssJsSubpage() from working
 509                 if( Namespace::getUser() == $this->mNamespace
 510                         and preg_match("/\\.(css|js)$/", $this->mTextform )
 511                         and !$wgUser->isSysop()
 512                         and !preg_match("/^".preg_quote($wgUser->getName(), '/')."/", $this->mTextform) )
 513                 { return false; }
 514                 $ur = $wgUser->getRights();
 515                 foreach ( $this->getRestrictions() as $r ) {
 516                         if ( "" != $r && ( ! in_array( $r, $ur ) ) ) {
 517                                 return false;
 518                         }
 519                 }
 520                 return true;
 521         }
 522
 523         function userCanRead() {
 524                 global $wgUser;
 525                 global $wgWhitelistRead;
 526
 527                 if( 0 != $wgUser->getID() ) return true;
 528                 if( !is_array( $wgWhitelistRead ) ) return true;
 529
 530                 $name = $this->getPrefixedText();
 531                 if( in_array( $name, $wgWhitelistRead ) ) return true;
 532
 533                 # Compatibility with old settings
 534                 if( $this->getNamespace() == NS_ARTICLE ) {
 535                         if( in_array( ":" . $name, $wgWhitelistRead ) ) return true;
 536                 }
 537                 return false;
 538         }
 539
 540         function isCssJsSubpage() {
 541                 return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.(css|js)$/", $this->mTextform ) );
 542         }
 543         function isCssSubpage() {
 544                 return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.css$/", $this->mTextform ) );
 545         }
 546         function isJsSubpage() {
 547                 return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.js$/", $this->mTextform ) );
 548         }
 549         function userCanEditCssJsSubpage() {
 550                 # protect css/js subpages of user pages
 551                 # XXX: this might be better using restrictions
 552                 global $wgUser;
 553                 return ( $wgUser->isSysop() or preg_match("/^".preg_quote($wgUser->getName())."/", $this->mTextform) );
 554         }
 555
 556         # Accessor/initialisation for mRestrictions
 557         function getRestrictions()
 558         {
 559                 $id = $this->getArticleID();
 560                 if ( 0 == $id ) { return array(); }
 561
 562                 if ( ! $this->mRestrictionsLoaded ) {
 563                         $res = wfGetSQL( "cur", "cur_restrictions", "cur_id=$id" );
 564                         $this->mRestrictions = explode( ",", trim( $res ) );
 565                         $this->mRestrictionsLoaded = true;
 566                 }
 567                 return $this->mRestrictions;
 568         }
 569
 570         # Is there a version of this page in the deletion archive?
 571         function isDeleted() {
 572                 $ns = $this->getNamespace();
 573                 $t = wfStrencode( $this->getDBkey() );
 574                 $sql = "SELECT COUNT(*) AS n FROM archive WHERE ar_namespace=$ns AND ar_title='$t'";
 575                 if( $res = wfQuery( $sql, DB_READ ) ) {
 576                         $s = wfFetchObject( $res );
 577                         return $s->n;
 578                 }
 579                 return 0;
 580         }
 581
 582         # Get the article ID from the link cache
 583         # Used very heavily, e.g. in Parser::replaceInternalLinks()
 584         function getArticleID()
 585         {
 586                 global $wgLinkCache;
 587
 588                 if ( -1 != $this->mArticleID ) { return $this->mArticleID; }
 589                 $this->mArticleID = $wgLinkCache->addLinkObj( $this );
 590                 return $this->mArticleID;
 591         }
 592
 593         # This clears some fields in this object, and clears any associated keys in the
 594         # "bad links" section of $wgLinkCache. This is called from Article::insertNewArticle()
 595         # to allow loading of the new cur_id. It's also called from Article::doDeleteArticle()
 596         function resetArticleID( $newid )
 597         {
 598                 global $wgLinkCache;
 599                 $wgLinkCache->clearBadLink( $this->getPrefixedDBkey() );
 600
 601                 if ( 0 == $newid ) { $this->mArticleID = -1; }
 602                 else { $this->mArticleID = $newid; }
 603                 $this->mRestrictionsLoaded = false;
 604                 $this->mRestrictions = array();
 605         }
 606
 607         # Updates cur_touched
 608         # Called from LinksUpdate.php
 609         function invalidateCache() {
 610                 $now = wfTimestampNow();
 611                 $ns = $this->getNamespace();
 612                 $ti = wfStrencode( $this->getDBkey() );
 613                 $sql = "UPDATE cur SET cur_touched='$now' WHERE cur_namespace=$ns AND cur_title='$ti'";
 614                 return wfQuery( $sql, DB_WRITE, "Title::invalidateCache" );
 615         }
 616
 617         # Prefixes some arbitrary text with the namespace or interwiki prefix of this object
 618         /* private */ function prefix( $name )
 619         {
 620                 global $wgLang;
 621
 622                 $p = "";
 623                 if ( "" != $this->mInterwiki ) {
 624                         $p = $this->mInterwiki . ":";
 625                 }
 626                 if ( 0 != $this->mNamespace ) {
 627                         $p .= $wgLang->getNsText( $this->mNamespace ) . ":";
 628                 }
 629                 return $p . $name;
 630         }
 631
 632         # Secure and split - main initialisation function for this object
 633         #
 634         # Assumes that mDbkeyform has been set, and is urldecoded
 635     # and uses undersocres, but not otherwise munged.  This function
 636     # removes illegal characters, splits off the winterwiki and
 637     # namespace prefixes, sets the other forms, and canonicalizes
 638     # everything.
 639         #
 640         /* private */ function secureAndSplit()
 641         {
 642                 global $wgLang, $wgLocalInterwiki, $wgCapitalLinks;
 643                 $fname = "Title::secureAndSplit";
 644                 wfProfileIn( $fname );
 645
 646                 static $imgpre = false;
 647                 static $rxTc = false;
 648
 649                 # Initialisation
 650                 if ( $imgpre === false ) {
 651                         $imgpre = ":" . $wgLang->getNsText( Namespace::getImage() ) . ":";
 652                         # % is needed as well
 653                         $rxTc = "/[^" . Title::legalChars() . "]/";
 654                 }
 655
 656                 $this->mInterwiki = $this->mFragment = "";
 657                 $this->mNamespace = $this->mDefaultNamespace; # Usually NS_MAIN
 658
 659                 # Clean up whitespace
 660                 #
 661                 $t = preg_replace( "/[\\s_]+/", "_", $this->mDbkeyform );
 662                 $t = preg_replace( '/^_*(.*?)_*$/', '$1', $t );
 663
 664                 if ( "" == $t ) {
 665                         wfProfileOut( $fname );
 666                         return false;
 667                 }
 668
 669                 $this->mDbkeyform = $t;
 670                 $done = false;
 671
 672                 # :Image: namespace
 673                 if ( 0 == strncasecmp( $imgpre, $t, strlen( $imgpre ) ) ) {
 674                         $t = substr( $t, 1 );
 675                 }
 676
 677                 # Initial colon indicating main namespace
 678                 if ( ":" == $t{0} ) {
 679                         $r = substr( $t, 1 );
 680                         $this->mNamespace = NS_MAIN;
 681                 } else {
 682                         # Namespace or interwiki prefix
 683                         if ( preg_match( "/^((?:i|x|[a-z]{2,3})(?:-[a-z0-9]+)?|[A-Za-z0-9_\\x80-\\xff]+?)_*:_*(.*)$/", $t, $m ) ) {
 684                                 #$p = strtolower( $m[1] );
 685                                 $p = $m[1];
 686                                 $lowerNs = strtolower( $p );
 687                                 if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) {
 688                                         # Canonical namespace
 689                                         $t = $m[2];
 690                                         $this->mNamespace = $ns;
 691                                 } elseif ( $ns = $wgLang->getNsIndex( $lowerNs )) {
 692                                         # Ordinary namespace
 693                                         $t = $m[2];
 694                                         $this->mNamespace = $ns;
 695                                 } elseif ( $this->getInterwikiLink( $p ) ) {
 696                                         # Interwiki link
 697                                         $t = $m[2];
 698                                         $this->mInterwiki = $p;
 699
 700                                         if ( !preg_match( "/^([A-Za-z0-9_\\x80-\\xff]+):(.*)$/", $t, $m ) ) {
 701                                                 $done = true;
 702                                         } elseif($this->mInterwiki != $wgLocalInterwiki) {
 703                                                 $done = true;
 704                                         }
 705                                 }
 706                         }
 707                         $r = $t;
 708                 }
 709
 710                 # Redundant interwiki prefix to the local wiki
 711                 if ( 0 == strcmp( $this->mInterwiki, $wgLocalInterwiki ) ) {
 712                         $this->mInterwiki = "";
 713                 }
 714                 # We already know that some pages won't be in the database!
 715                 #
 716                 if ( "" != $this->mInterwiki || -1 == $this->mNamespace ) {
 717                         $this->mArticleID = 0;
 718                 }
 719                 $f = strstr( $r, "#" );
 720                 if ( false !== $f ) {
 721                         $this->mFragment = substr( $f, 1 );
 722                         $r = substr( $r, 0, strlen( $r ) - strlen( $f ) );
 723                 }
 724
 725                 # Reject illegal characters.
 726                 #
 727                 if( preg_match( $rxTc, $r ) ) {
 728                         return false;
 729                 }
 730
 731                 # "." and ".." conflict with the directories of those namesa
 732                 if ( $r === "." || $r === ".." || strpos( $r, "./" ) !== false ) {
 733                         return false;
 734                 }
 735
 736                 # Initial capital letter
 737                 if( $wgCapitalLinks && $this->mInterwiki == "") {
 738                         $t = $wgLang->ucfirst( $r );
 739                 }
 740
 741                 # Fill fields
 742                 $this->mDbkeyform = $t;
 743                 $this->mUrlform = wfUrlencode( $t );
 744
 745                 $this->mTextform = str_replace( "_", " ", $t );
 746
 747                 wfProfileOut( $fname );
 748                 return true;
 749         }
 750
 751         # Get a title object associated with the talk page of this article
 752         function getTalkPage() {
 753                 return Title::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
 754         }
 755
 756         # Get a title object associated with the subject page of this talk page
 757         function getSubjectPage() {
 758                 return Title::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() );
 759         }
 760
 761         # Get an array of Title objects linking to this title
 762         # Also stores the IDs in the link cache
 763         function getLinksTo() {
 764                 global $wgLinkCache;
 765                 $id = $this->getArticleID();
 766                 $sql = "SELECT cur_namespace,cur_title,cur_id FROM cur,links WHERE l_from=cur_id AND l_to={$id}";
 767                 $res = wfQuery( $sql, DB_READ, "Title::getLinksTo" );
 768                 $retVal = array();
 769                 if ( wfNumRows( $res ) ) {
 770                         while ( $row = wfFetchObject( $res ) ) {
 771                                 if ( $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title ) ) {
 772                                         $wgLinkCache->addGoodLink( $row->cur_id, $titleObj->getPrefixedDBkey() );
 773                                         $retVal[] = $titleObj;
 774                                 }
 775                         }
 776                 }
 777                 wfFreeResult( $res );
 778                 return $retVal;
 779         }
 780
 781         # Get an array of Title objects linking to this non-existent title
 782         # Also stores the IDs in the link cache
 783         function getBrokenLinksTo() {
 784                 global $wgLinkCache;
 785                 $encTitle = wfStrencode( $this->getPrefixedDBkey() );
 786                 $sql = "SELECT cur_namespace,cur_title,cur_id FROM brokenlinks,cur " .
 787                   "WHERE bl_from=cur_id AND bl_to='$encTitle'";
 788                 $res = wfQuery( $sql, DB_READ, "Title::getBrokenLinksTo" );
 789                 $retVal = array();
 790                 if ( wfNumRows( $res ) ) {
 791                         while ( $row = wfFetchObject( $res ) ) {
 792                                 $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title );
 793                                 $wgLinkCache->addGoodLink( $row->cur_id, $titleObj->getPrefixedDBkey() );
 794                                 $retVal[] = $titleObj;
 795                         }
 796                 }
 797                 wfFreeResult( $res );
 798                 return $retVal;
 799         }
 800
 801         function getSquidURLs() {
 802                 return array(
 803                         $this->getInternalURL(),
 804                         $this->getInternalURL( "action=history" )
 805                 );
 806         }
 807
 808         function moveNoAuth( &$nt ) {
 809                 return $this->moveTo( $nt, false );
 810         }
 811
 812         # Move a title to a new location
 813         # Returns true on success, message name on failure
 814         # auth indicates whether wgUser's permissions should be checked
 815         function moveTo( &$nt, $auth = true ) {
 816                 if( !$this or !$nt ) {
 817                         return "badtitletext";
 818                 }
 819
 820                 $fname = "Title::move";
 821                 $oldid = $this->getArticleID();
 822                 $newid = $nt->getArticleID();
 823
 824                 if ( strlen( $nt->getDBkey() ) < 1 ) {
 825                         return "articleexists";
 826                 }
 827                 if ( ( ! Namespace::isMovable( $this->getNamespace() ) ) ||
 828                          ( "" == $this->getDBkey() ) ||
 829                          ( "" != $this->getInterwiki() ) ||
 830                          ( !$oldid ) ||
 831                      ( ! Namespace::isMovable( $nt->getNamespace() ) ) ||
 832                          ( "" == $nt->getDBkey() ) ||
 833                          ( "" != $nt->getInterwiki() ) ) {
 834                         return "badarticleerror";
 835                 }
 836
 837                 if ( $auth && ( !$this->userCanEdit() || !$nt->userCanEdit() ) ) {
 838                         return "protectedpage";
 839                 }
 840
 841                 # The move is allowed only if (1) the target doesn't exist, or
 842                 # (2) the target is a redirect to the source, and has no history
 843                 # (so we can undo bad moves right after they're done).
 844
 845                 if ( 0 != $newid ) { # Target exists; check for validity
 846                         if ( ! $this->isValidMoveTarget( $nt ) ) {
 847                                 return "articleexists";
 848                         }
 849                         $this->moveOverExistingRedirect( $nt );
 850                 } else { # Target didn't exist, do normal move.
 851                         $this->moveToNewTitle( $nt, $newid );
 852                 }
 853
 854                 # Update watchlists
 855
 856                 $oldnamespace = $this->getNamespace() & ~1;
 857                 $newnamespace = $nt->getNamespace() & ~1;
 858                 $oldtitle = $this->getDBkey();
 859                 $newtitle = $nt->getDBkey();
 860
 861                 if( $oldnamespace != $newnamespace && $oldtitle != $newtitle ) {
 862                         WatchedItem::duplicateEntries( $this, $nt );
 863                 }
 864
 865                 # Update search engine
 866                 $u = new SearchUpdate( $oldid, $nt->getPrefixedDBkey() );
 867                 $u->doUpdate();
 868                 $u = new SearchUpdate( $newid, $this->getPrefixedDBkey(), "" );
 869                 $u->doUpdate();
 870
 871                 return true;
 872         }
 873
 874         # Move page to title which is presently a redirect to the source page
 875
 876         /* private */ function moveOverExistingRedirect( &$nt )
 877         {
 878                 global $wgUser, $wgLinkCache, $wgUseSquid, $wgMwRedir;
 879                 $fname = "Title::moveOverExistingRedirect";
 880                 $comment = wfMsg( "1movedto2", $this->getPrefixedText(), $nt->getPrefixedText() );
 881
 882         $now = wfTimestampNow();
 883         $won = wfInvertTimestamp( $now );
 884                 $newid = $nt->getArticleID();
 885                 $oldid = $this->getArticleID();
 886
 887                 # Change the name of the target page:
 888                 wfUpdateArray(
 889                         /* table */ 'cur',
 890                         /* SET */ array(
 891                                 'cur_touched' => $now,
 892                                 'cur_namespace' => $nt->getNamespace(),
 893                                 'cur_title' => $nt->getDBkey()
 894                         ),
 895                         /* WHERE */ array( 'cur_id' => $oldid ),
 896                         $fname
 897                 );
 898                 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
 899
 900                 # Repurpose the old redirect. We don't save it to history since
 901                 # by definition if we've got here it's rather uninteresting.
 902
 903                 $redirectText = $wgMwRedir->getSynonym( 0 ) . " [[" . $nt->getPrefixedText() . "]]\n";
 904                 wfUpdateArray(
 905                         /* table */ 'cur',
 906                         /* SET */ array(
 907                                 'cur_touched' => $now,
 908                                 'cur_timestamp' => $now,
 909                                 'inverse_timestamp' => $won,
 910                                 'cur_namespace' => $this->getNamespace(),
 911                                 'cur_title' => $this->getDBkey(),
 912                                 'cur_text' => $wgMwRedir->getSynonym( 0 ) . " [[" . $nt->getPrefixedText() . "]]\n",
 913                                 'cur_comment' => $comment,
 914                                 'cur_user' => $wgUser->getID(),
 915                                 'cur_minor_edit' => 0,
 916                                 'cur_counter' => 0,
 917                                 'cur_restrictions' => '',
 918                                 'cur_user_text' => $wgUser->getName(),
 919                                 'cur_is_redirect' => 1,
 920                                 'cur_is_new' => 1
 921                         ),
 922                         /* WHERE */ array( 'cur_id' => $newid ),
 923                         $fname
 924                 );
 925
 926                 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
 927
 928                 # Fix the redundant names for the past revisions of the target page.
 929                 # The redirect should have no old revisions.
 930                 wfUpdateArray(
 931                         /* table */ 'old',
 932                         /* SET */ array(
 933                                 'old_namespace' => $nt->getNamespace(),
 934                                 'old_title' => $nt->getDBkey(),
 935                         ),
 936                         /* WHERE */ array(
 937                                 'old_namespace' => $this->getNamespace(),
 938                                 'old_title' => $this->getDBkey(),
 939                         ),
 940                         $fname
 941                 );
 942
 943                 RecentChange::notifyMove( $now, $this, $nt, $wgUser, $comment );
 944
 945                 # Swap links
 946
 947                 # Load titles and IDs
 948                 $linksToOld = $this->getLinksTo();
 949                 $linksToNew = $nt->getLinksTo();
 950
 951                 # Delete them all
 952                 $sql = "DELETE FROM links WHERE l_to=$oldid OR l_to=$newid";
 953                 wfQuery( $sql, DB_WRITE, $fname );
 954
 955                 # Reinsert
 956                 if ( count( $linksToOld ) || count( $linksToNew )) {
 957                         $sql = "INSERT INTO links (l_from,l_to) VALUES ";
 958                         $first = true;
 959
 960                         # Insert links to old title
 961                         foreach ( $linksToOld as $linkTitle ) {
 962                                 if ( $first ) {
 963                                         $first = false;
 964                                 } else {
 965                                         $sql .= ",";
 966                                 }
 967                                 $id = $linkTitle->getArticleID();
 968                                 $sql .= "($id,$newid)";
 969                         }
 970
 971                         # Insert links to new title
 972                         foreach ( $linksToNew as $linkTitle ) {
 973                                 if ( $first ) {
 974                                         $first = false;
 975                                 } else {
 976                                         $sql .= ",";
 977                                 }
 978                                 $id = $linkTitle->getArticleID();
 979                                 $sql .= "($id, $oldid)";
 980                         }
 981
 982                         wfQuery( $sql, DB_WRITE, $fname );
 983                 }
 984
 985                 # Now, we record the link from the redirect to the new title.
 986                 # It should have no other outgoing links...
 987                 $sql = "DELETE FROM links WHERE l_from={$newid}";
 988                 wfQuery( $sql, DB_WRITE, $fname );
 989                 $sql = "INSERT INTO links (l_from,l_to) VALUES ({$newid},{$oldid})";
 990                 wfQuery( $sql, DB_WRITE, $fname );
 991
 992                 # Clear linkscc
 993                 LinkCache::linksccClearLinksTo( $oldid );
 994                 LinkCache::linksccClearLinksTo( $newid );
 995
 996                 # Purge squid
 997                 if ( $wgUseSquid ) {
 998                         $urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() );
 999                         $u = new SquidUpdate( $urls );
1000                         $u->doUpdate();
1001                 }
1002         }
1003
1004         # Move page to non-existing title.
1005         # Sets $newid to be the new article ID
1006
1007         /* private */ function moveToNewTitle( &$nt, &$newid )
1008         {
1009                 global $wgUser, $wgLinkCache, $wgUseSquid;
1010                 $fname = "MovePageForm::moveToNewTitle";
1011                 $comment = wfMsg( "1movedto2", $this->getPrefixedText(), $nt->getPrefixedText() );
1012
1013                 $now = wfTimestampNow();
1014                 $won = wfInvertTimestamp( $now );
1015                 $newid = $nt->getArticleID();
1016                 $oldid = $this->getArticleID();
1017
1018                 # Rename cur entry
1019                 wfUpdateArray(
1020                         /* table */ 'cur',
1021                         /* SET */ array(
1022                                 'cur_touched' => $now,
1023                                 'cur_namespace' => $nt->getNamespace(),
1024                                 'cur_title' => $nt->getDBkey()
1025                         ),
1026                         /* WHERE */ array( 'cur_id' => $oldid ),
1027                         $fname
1028                 );
1029
1030                 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
1031
1032                 # Insert redirct
1033                 wfInsertArray( 'cur', array(
1034                         'cur_namespace' => $this->getNamespace(),
1035                         'cur_title' => $this->getDBkey(),
1036                         'cur_comment' => $comment,
1037                         'cur_user' => $wgUser->getID(),
1038                         'cur_user_text' => $wgUser->getName(),
1039                         'cur_timestamp' => $now,
1040                         'inverse_timestamp' => $won,
1041                         'cur_touched' => $now,
1042                         'cur_is_redirect' => 1,
1043                         'cur_is_new' => 1,
1044                         'cur_text' => "#REDIRECT [[" . $nt->getPrefixedText() . "]]\n" )
1045                 );
1046                 $newid = wfInsertId();
1047                 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
1048
1049                 # Rename old entries
1050                 wfUpdateArray(
1051                         /* table */ 'old',
1052                         /* SET */ array(
1053                                 'old_namespace' => $nt->getNamespace(),
1054                                 'old_title' => $nt->getDBkey()
1055                         ),
1056                         /* WHERE */ array(
1057                                 'old_namespace' => $this->getNamespace(),
1058                                 'old_title' => $this->getDBkey()
1059                         ), $fname
1060                 );
1061
1062                 # Record in RC
1063                 RecentChange::notifyMove( $now, $this, $nt, $wgUser, $comment );
1064
1065                 # Purge squid and linkscc as per article creation
1066                 Article::onArticleCreate( $nt );
1067
1068                 # Any text links to the old title must be reassigned to the redirect
1069                 $sql = "UPDATE links SET l_to={$newid} WHERE l_to={$oldid}";
1070                 wfQuery( $sql, DB_WRITE, $fname );
1071                 LinkCache::linksccClearLinksTo( $oldid );
1072
1073                 # Record the just-created redirect's linking to the page
1074                 $sql = "INSERT INTO links (l_from,l_to) VALUES ({$newid},{$oldid})";
1075                 wfQuery( $sql, DB_WRITE, $fname );
1076
1077                 # Non-existent target may have had broken links to it; these must
1078                 # now be removed and made into good links.
1079                 $update = new LinksUpdate( $oldid, $nt->getPrefixedDBkey() );
1080                 $update->fixBrokenLinks();
1081
1082                 # Purge old title from squid
1083                 # The new title, and links to the new title, are purged in Article::onArticleCreate()
1084                 $titles = $nt->getLinksTo();
1085                 if ( $wgUseSquid ) {
1086                         $urls = $this->getSquidURLs();
1087                         foreach ( $titles as $linkTitle ) {
1088                                 $urls[] = $linkTitle->getInternalURL();
1089                         }
1090                         $u = new SquidUpdate( $urls );
1091                         $u->doUpdate();
1092                 }
1093         }
1094
1095         # Checks if $this can be moved to $nt
1096         # Both titles must exist in the database, otherwise it will blow up
1097         function isValidMoveTarget( $nt )
1098         {
1099                 $fname = "Title::isValidMoveTarget";
1100
1101                 # Is it a redirect?
1102                 $id  = $nt->getArticleID();
1103                 $sql = "SELECT cur_is_redirect,cur_text FROM cur " .
1104                   "WHERE cur_id={$id}";
1105                 $res = wfQuery( $sql, DB_READ, $fname );
1106                 $obj = wfFetchObject( $res );
1107
1108                 if ( 0 == $obj->cur_is_redirect ) {
1109                         # Not a redirect
1110                         return false;
1111                 }
1112
1113                 # Does the redirect point to the source?
1114                 if ( preg_match( "/\\[\\[\\s*([^\\]]*)]]/", $obj->cur_text, $m ) ) {
1115                         $redirTitle = Title::newFromText( $m[1] );
1116                         if ( 0 != strcmp( $redirTitle->getPrefixedDBkey(), $this->getPrefixedDBkey() ) ) {
1117                                 return false;
1118                         }
1119                 }
1120
1121                 # Does the article have a history?
1122                 $row = wfGetArray( 'old', array( 'old_id' ), array(
1123                         'old_namespace' => $nt->getNamespace(),
1124                         'old_title' => $nt->getDBkey() )
1125                 );
1126
1127                 # Return true if there was no history
1128                 return $row === false;
1129         }
1130
1131         # Create a redirect, fails if the title already exists, does not notify RC
1132         # Returns success
1133         function createRedirect( $dest, $comment ) {
1134                 global $wgUser;
1135                 if ( $this->getArticleID() ) {
1136                         return false;
1137                 }
1138
1139                 $now = wfTimestampNow();
1140                 $won = wfInvertTimestamp( $now );
1141
1142                 wfInsertArray( 'cur', array(
1143                         'cur_namespace' => $this->getNamespace(),
1144                         'cur_title' => $this->getDBkey(),
1145                         'cur_comment' => $comment,
1146                         'cur_user' => $wgUser->getID(),
1147                         'cur_user_text' => $wgUser->getName(),
1148                         'cur_timestamp' => $now,
1149                         'inverse_timestamp' => $won,
1150                         'cur_touched' => $now,
1151                         'cur_is_redirect' => 1,
1152                         'cur_is_new' => 1,
1153                         'cur_text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n"
1154                 ));
1155                 $newid = wfInsertId();
1156                 $this->resetArticleID( $newid );
1157
1158                 # Link table
1159                 if ( $dest->getArticleID() ) {
1160                         wfInsertArray( 'links', array(
1161                                 'l_to' => $dest->getArticleID(),
1162                                 'l_from' => $newid
1163                         ));
1164                 } else {
1165                         wfInsertArray( 'brokenlinks', array(
1166                                 'bl_to' => $dest->getPrefixedDBkey(),
1167                                 'bl_from' => $newid
1168                         ));
1169                 }
1170
1171                 Article::onArticleCreate( $this );
1172                 return true;
1173         }
1174
1175         # Get categories to wich belong this title and return an array of
1176         # categories names.
1177         function getParentCategories( )
1178         {
1179                 global $wgLang,$wgUser;
1180
1181                 #$titlekey = wfStrencode( $this->getArticleID() );
1182                 $titlekey = $this->getArticleId();
1183                 $cns = Namespace::getCategory();
1184                 $sk =& $wgUser->getSkin();
1185                 $parents = array();
1186
1187                 # get the parents categories of this title from the database
1188                 $sql = "SELECT DISTINCT cur_id FROM cur,categorylinks
1189                         WHERE cl_from='$titlekey' AND cl_to=cur_title AND cur_namespace='$cns'
1190                                 ORDER BY cl_sortkey" ;
1191                 $res = wfQuery ( $sql, DB_READ ) ;
1192
1193                 if(wfNumRows($res) > 0) {
1194                         while ( $x = wfFetchObject ( $res ) ) $data[] = $x ;
1195                         wfFreeResult ( $res ) ;
1196                 } else {
1197                         $data = '';
1198                 }
1199                 return $data;
1200         }
1201
1202         # will get the parents and grand-parents
1203         # TODO : not sure what's happening when a loop happen like:
1204         #       Encyclopedia > Astronomy > Encyclopedia
1205         function getAllParentCategories(&$stack)
1206         {
1207                 global $wgUser,$wgLang;
1208                 $result = '';
1209
1210                 # getting parents
1211                 $parents = $this->getParentCategories( );
1212
1213                 if($parents == '')
1214                 {
1215                         # The current element has no more parent so we dump the stack
1216                         # and make a clean line of categories
1217                         $sk =& $wgUser->getSkin() ;
1218
1219                         foreach ( array_reverse($stack) as $child => $parent )
1220                         {
1221                                 # make a link of that parent
1222                                 $result .= $sk->makeLink($wgLang->getNSText ( Namespace::getCategory() ).":".$parent,$parent);
1223                                 $result .= ' &gt; ';
1224                                 $lastchild = $child;
1225                         }
1226                         # append the last child.
1227                         # TODO : We should have a last child unless there is an error in the
1228                         # "categorylinks" table.
1229                         if(isset($lastchild)) { $result .= $lastchild; }
1230
1231                         $result .= "<br/>\n";
1232
1233                         # now we can empty the stack
1234                         $stack = array();
1235
1236                 } else {
1237                         # look at parents of current category
1238                         foreach($parents as $parent)
1239                         {
1240                                 # create a title object for the parent
1241                                 $tpar = Title::newFromID($parent->cur_id);
1242                                 # add it to the stack
1243                                 $stack[$this->getText()] = $tpar->getText();
1244                                 # grab its parents
1245                                 $result .= $tpar->getAllParentCategories($stack);
1246                         }
1247                 }
1248
1249                 if(isset($result)) { return $result; }
1250                 else { return ''; };
1251         }
1252
1253
1254 }
1255 ?>