languages/LanguageConverter.php

   1 <?php
   2 /**
   3   * @package MediaWiki
   4   * @subpackage Language
   5   *
   6   * @author Zhengzhu Feng <zhengzhu@gmail.com>
   7   * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License
   8   */
   9
  10 class LanguageConverter {
  11         var $mPreferredVariant='';
  12         var $mMainLanguageCode;
  13         var $mVariants, $mVariantFallbacks;
  14         var $mTablesLoaded = false;
  15         var $mTables;
  16         var $mTitleDisplay='';
  17         var $mDoTitleConvert=true, $mDoContentConvert=true;
  18         var $mCacheKey;
  19         var $mLangObj;
  20         var $mMarkup;
  21         var $mFlags;
  22         var $mUcfirst = false;
  23         var $mNoTitleConvert = false;
  24         /**
  25      * Constructor
  26          *
  27      * @param string $maincode the main language code of this language
  28      * @param array $variants the supported variants of this language
  29      * @param array $variantfallback the fallback language of each variant
  30      * @param array $markup array defining the markup used for manual conversion
  31          * @param array $flags array defining the custom strings that maps to the flags
  32      * @access public
  33      */
  34         function __construct($langobj, $maincode,
  35                                                                 $variants=array(),
  36                                                                 $variantfallbacks=array(),
  37                                                                 $markup=array(),
  38                                                                 $flags = array()) {
  39                 global $wgLegalTitleChars;
  40                 $this->mLangObj = $langobj;
  41                 $this->mMainLanguageCode = $maincode;
  42                 $this->mVariants = $variants;
  43                 $this->mVariantFallbacks = $variantfallbacks;
  44                 $this->mCacheKey = wfMemcKey( 'conversiontables' );
  45                 $m = array('begin'=>'-{', 'flagsep'=>'|', 'codesep'=>':',
  46                                    'varsep'=>';', 'end'=>'}-');
  47                 $this->mMarkup = array_merge($m, $markup);
  48                 $f = array('A'=>'A', 'T'=>'T');
  49                 $this->mFlags = array_merge($f, $flags);
  50         }
  51
  52         /**
  53      * @access public
  54      */
  55         function getVariants() {
  56                 return $this->mVariants;
  57         }
  58
  59         /**
  60          * in case some variant is not defined in the markup, we need
  61          * to have some fallback. for example, in zh, normally people
  62          * will define zh-cn and zh-tw, but less so for zh-sg or zh-hk.
  63          * when zh-sg is preferred but not defined, we will pick zh-cn
  64          * in this case. right now this is only used by zh.
  65          *
  66          * @param string $v the language code of the variant
  67          * @return string the code of the fallback language or false if there is no fallback
  68      * @private
  69         */
  70         function getVariantFallback($v) {
  71                 return $this->mVariantFallbacks[$v];
  72         }
  73
  74
  75         /**
  76          * get preferred language variants.
  77          * @param boolean $fromUser Get it from $wgUser's preferences
  78      * @return string the preferred language code
  79      * @access public
  80         */
  81         function getPreferredVariant( $fromUser = true ) {
  82                 global $wgUser, $wgRequest;
  83
  84                 if($this->mPreferredVariant)
  85                         return $this->mPreferredVariant;
  86
  87                 // see if the preference is set in the request
  88                 $req = $wgRequest->getText( 'variant' );
  89                 if( in_array( $req, $this->mVariants ) ) {
  90                         $this->mPreferredVariant = $req;
  91                         return $req;
  92                 }
  93
  94                 // check the syntax /code/ArticleTitle
  95                 $scriptBase = basename( $_SERVER['SCRIPT_NAME'] );
  96                 if(in_array($scriptBase,$this->mVariants)){
  97                         $this->mPreferredVariant = $scriptBase;
  98                         return $this->mPreferredVariant;
  99                 }
 100
 101                 // get language variant preference from logged in users
 102                 // Don't call this on stub objects because that causes infinite
 103                 // recursion during initialisation
 104                 if( $fromUser && $wgUser->isLoggedIn() )  {
 105                         $this->mPreferredVariant = $wgUser->getOption('variant');
 106                         return $this->mPreferredVariant;
 107                 }
 108
 109                 # FIXME rewrite code for parsing http header. The current code
 110                 # is written specific for detecting zh- variants
 111                 if( !$this->mPreferredVariant ) {
 112                         // see if some supported language variant is set in the
 113                         // http header, but we don't set the mPreferredVariant
 114                         // variable in case this is called before the user's
 115                         // preference is loaded
 116                         $pv=$this->mMainLanguageCode;
 117                         if(array_key_exists('HTTP_ACCEPT_LANGUAGE', $_SERVER)) {
 118                                 $header = str_replace( '_', '-', strtolower($_SERVER["HTTP_ACCEPT_LANGUAGE"]));
 119                                 $zh = strstr($header, $pv.'-');
 120                                 if($zh) {
 121                                         $pv = substr($zh,0,5);
 122                                 }
 123                         }
 124                         return $pv;
 125                 }
 126         }
 127
 128         /**
 129      * dictionary-based conversion
 130      *
 131      * @param string $text the text to be converted
 132      * @param string $toVariant the target language code
 133      * @return string the converted text
 134      * @private
 135      */
 136         function autoConvert($text, $toVariant=false) {
 137                 $fname="LanguageConverter::autoConvert";
 138
 139                 wfProfileIn( $fname );
 140
 141                 if(!$this->mTablesLoaded)
 142                         $this->loadTables();
 143
 144                 if(!$toVariant)
 145                         $toVariant = $this->getPreferredVariant();
 146                 if(!in_array($toVariant, $this->mVariants))
 147                         return $text;
 148
 149                 /* we convert everything except:
 150                    1. html markups (anything between < and >)
 151                    2. html entities
 152                    3. place holders created by the parser
 153                 */
 154                 global $wgParser;
 155                 if (isset($wgParser))
 156                         $marker = '|' . $wgParser->UniqPrefix() . '[\-a-zA-Z0-9]+';
 157                 else
 158                         $marker = "";
 159
 160                 // this one is needed when the text is inside an html markup
 161                 $htmlfix = '|<[^>]+$|^[^<>]*>';
 162
 163                 // disable convert to variants between <code></code> tags
 164                 $codefix = '<code>.+?<\/code>|';
 165
 166                 $reg = '/'.$codefix.'<[^>]+>|&[a-zA-Z#][a-z0-9]+;' . $marker . $htmlfix . '/s';
 167
 168                 $matches = preg_split($reg, $text, -1, PREG_SPLIT_OFFSET_CAPTURE);
 169
 170                 $m = array_shift($matches);
 171
 172                 $ret = $this->translate($m[0], $toVariant);
 173                 $mstart = $m[1]+strlen($m[0]);
 174                 foreach($matches as $m) {
 175                         $ret .= substr($text, $mstart, $m[1]-$mstart);
 176                         $ret .= $this->translate($m[0], $toVariant);
 177                         $mstart = $m[1] + strlen($m[0]);
 178                 }
 179                 wfProfileOut( $fname );
 180                 return $ret;
 181         }
 182
 183         /**
 184          * Translate a string to a variant
 185          * Doesn't process markup or do any of that other stuff, for that use convert()
 186          *
 187          * @param string $text Text to convert
 188          * @param string $variant Variant language code
 189          * @return string Translated text
 190          */
 191         function translate( $text, $variant ) {
 192                 wfProfileIn( __METHOD__ );
 193                 if( !$this->mTablesLoaded )
 194                         $this->loadTables();
 195                 $text = $this->mTables[$variant]->replace( $text );
 196                 wfProfileOut( __METHOD__ );
 197                 return $text;
 198         }
 199
 200         /**
 201      * convert text to all supported variants
 202      *
 203      * @param string $text the text to be converted
 204      * @return array of string
 205      * @public
 206      */
 207         function autoConvertToAllVariants($text) {
 208                 $fname="LanguageConverter::autoConvertToAllVariants";
 209                 wfProfileIn( $fname );
 210                 if( !$this->mTablesLoaded )
 211                         $this->loadTables();
 212
 213                 $ret = array();
 214                 foreach($this->mVariants as $variant) {
 215                         $ret[$variant] = $this->translate($text, $variant);
 216                 }
 217
 218                 wfProfileOut( $fname );
 219                 return $ret;
 220         }
 221
 222         /**
 223      * convert link text to all supported variants
 224      *
 225      * @param string $text the text to be converted
 226      * @return array of string
 227      * @public
 228      */
 229         function convertLinkToAllVariants($text) {
 230                 if( !$this->mTablesLoaded )
 231                         $this->loadTables();
 232
 233                 $ret = array();
 234                 $tarray = explode($this->mMarkup['begin'], $text);
 235                 $tfirst = array_shift($tarray);
 236
 237                 foreach($this->mVariants as $variant)
 238                         $ret[$variant] = $this->translate($tfirst,$variant);
 239
 240                 foreach($tarray as $txt) {
 241                         $marked = explode($this->mMarkup['end'], $txt, 2);
 242
 243                         foreach($this->mVariants as $variant){
 244                                 $ret[$variant] .= $this->mMarkup['begin'].$marked[0].$this->mMarkup['end'];
 245                                 if(array_key_exists(1, $marked))
 246                                         $ret[$variant] .= $this->translate($marked[1],$variant);
 247                         }
 248
 249                 }
 250
 251                 return $ret;
 252         }
 253
 254
 255         /**
 256          * Convert text using a parser object for context
 257          */
 258         function parserConvert( $text, &$parser ) {
 259                 global $wgDisableLangConversion;
 260                 /* don't do anything if this is the conversion table */
 261                 if ( $parser->mTitle->getNamespace() == NS_MEDIAWIKI &&
 262                                  strpos($parser->mTitle->getText(), "Conversiontable") !== false )
 263                 {
 264                         return $text;
 265                 }
 266
 267                 if($wgDisableLangConversion)
 268                         return $text;
 269
 270                 $text = $this->convert( $text );
 271                 $parser->mOutput->setTitleText( $this->mTitleDisplay );
 272                 return $text;
 273         }
 274
 275         /**
 276          * convert text to different variants of a language. the automatic
 277          * conversion is done in autoConvert(). here we parse the text
 278          * marked with -{}-, which specifies special conversions of the
 279          * text that can not be accomplished in autoConvert()
 280          *
 281          * syntax of the markup:
 282          * -{code1:text1;code2:text2;...}-  or
 283          * -{text}- in which case no conversion should take place for text
 284      *
 285      * @param string $text text to be converted
 286      * @param bool $isTitle whether this conversion is for the article title
 287      * @return string converted text
 288      * @access public
 289      */
 290         function convert( $text , $isTitle=false) {
 291                 $mw =& MagicWord::get( 'notitleconvert'   );
 292                 if( $mw->matchAndRemove( $text ) )
 293                         $this->mDoTitleConvert = false;
 294
 295                 $mw =& MagicWord::get( 'nocontentconvert'   );
 296                 if( $mw->matchAndRemove( $text ) ) {
 297                         $this->mDoContentConvert = false;
 298                 }
 299
 300                 // no conversion if redirecting
 301                 $mw =& MagicWord::get( 'redirect'   );
 302                 if( $mw->matchStart( $text ))
 303                         return $text;
 304
 305                 if( $isTitle ) {
 306                         if($this->mNoTitleConvert){
 307                                 $this->mTitleDisplay = $text;
 308                                 return $text;
 309                         }
 310
 311                         if( !$this->mDoTitleConvert ) {
 312                                 $this->mTitleDisplay = $text;
 313                                 return $text;
 314                         }
 315
 316                         global $wgRequest;
 317                         $isredir = $wgRequest->getText( 'redirect', 'yes' );
 318                         $action = $wgRequest->getText( 'action' );
 319                         if ( $isredir == 'no' || $action == 'edit' ) {
 320                                 return $text;
 321                         }
 322                         else {
 323                                 $this->mTitleDisplay = $this->convert($text);
 324                                 return $this->mTitleDisplay;
 325                         }
 326                 }
 327
 328                 if( !$this->mDoContentConvert )
 329                         return $text;
 330
 331                 $plang = $this->getPreferredVariant();
 332                 if( isset( $this->mVariantFallbacks[$plang] ) ) {
 333                         $fallback = $this->mVariantFallbacks[$plang];
 334                 } else {
 335                         // This sounds... bad?
 336                         $fallback = '';
 337                 }
 338
 339                 $tarray = explode($this->mMarkup['begin'], $text);
 340                 $tfirst = array_shift($tarray);
 341                 $text = $this->autoConvert($tfirst);
 342                 foreach($tarray as $txt) {
 343                         $marked = explode($this->mMarkup['end'], $txt, 2);
 344                         $flags = array();
 345                         $tt = explode($this->mMarkup['flagsep'], $marked[0], 2);
 346
 347                         if(sizeof($tt) == 2) {
 348                                 $f = explode($this->mMarkup['varsep'], $tt[0]);
 349                                 foreach($f as $ff) {
 350                                         $ff = trim($ff);
 351                                         if(array_key_exists($ff, $this->mFlags) &&
 352                                                 !array_key_exists($this->mFlags[$ff], $flags))
 353                                                 $flags[] = $this->mFlags[$ff];
 354                                 }
 355                                 $rules = $tt[1];
 356                         }
 357                         else
 358                                 $rules = $marked[0];
 359
 360                         //FIXME: may cause trouble here...
 361                         //strip &nbsp; since it interferes with the parsing, plus,
 362                         //all spaces should be stripped in this tag anyway.
 363                         $rules = str_replace('&nbsp;', '', $rules);
 364
 365                         $carray = $this->parseManualRule($rules, $flags);
 366                         $disp = '';
 367                         if(array_key_exists($plang, $carray))
 368                                 $disp = $carray[$plang];
 369                         else if(array_key_exists($fallback, $carray))
 370                                 $disp = $carray[$fallback];
 371                         if($disp) {
 372                                 if(in_array('T',  $flags))
 373                                         $this->mTitleDisplay = $disp;
 374                                 else
 375                                         $text .= $disp;
 376
 377                                 if(in_array('A', $flags)) {
 378                                         /* modify the conversion table for this session*/
 379
 380                                         /* fill in the missing variants, if any,
 381                                             with fallbacks */
 382                                         foreach($this->mVariants as $v) {
 383                                                 if(!array_key_exists($v, $carray)) {
 384                                                         $vf = $this->getVariantFallback($v);
 385                                                         if(array_key_exists($vf, $carray))
 386                                                                 $carray[$v] = $carray[$vf];
 387                                                 }
 388                                         }
 389
 390                                         foreach($this->mVariants as $vfrom) {
 391                                                 if(!array_key_exists($vfrom, $carray))
 392                                                         continue;
 393                                                 foreach($this->mVariants as $vto) {
 394                                                         if($vfrom == $vto)
 395                                                                 continue;
 396                                                         if(!array_key_exists($vto, $carray))
 397                                                                 continue;
 398                                                         $this->mTables[$vto]->setPair($carray[$vfrom], $carray[$vto]);
 399                                                 }
 400                                         }
 401                                 }
 402                         }
 403                         else {
 404                                 $text .= $marked[0];
 405                         }
 406                         if(array_key_exists(1, $marked))
 407                                 $text .= $this->autoConvert($marked[1]);
 408                 }
 409
 410                 return $text;
 411         }
 412
 413         /**
 414          * parse the manually marked conversion rule
 415          * @param string $rule the text of the rule
 416          * @return array of the translation in each variant
 417          * @private
 418          */
 419         function parseManualRule($rules, $flags=array()) {
 420
 421                 $choice = explode($this->mMarkup['varsep'], $rules);
 422                 $carray = array();
 423                 if(sizeof($choice) == 1) {
 424                         /* a single choice */
 425                         foreach($this->mVariants as $v)
 426                                 $carray[$v] = $choice[0];
 427                 }
 428                 else {
 429                         foreach($choice as $c) {
 430                                 $v = explode($this->mMarkup['codesep'], $c);
 431                                 if(sizeof($v) != 2) // syntax error, skip
 432                                         continue;
 433                                 $carray[trim($v[0])] = trim($v[1]);
 434                         }
 435                 }
 436                 return $carray;
 437         }
 438
 439         /**
 440          * if a language supports multiple variants, it is
 441          * possible that non-existing link in one variant
 442          * actually exists in another variant. this function
 443          * tries to find it. See e.g. LanguageZh.php
 444          *
 445          * @param string $link the name of the link
 446          * @param mixed $nt the title object of the link
 447          * @return null the input parameters may be modified upon return
 448      * @access public
 449          */
 450         function findVariantLink( &$link, &$nt ) {
 451                 global $wgDisableLangConversion;
 452                 $pref = $this->getPreferredVariant();
 453                 $ns=0;
 454                 if(is_object($nt))
 455                         $ns = $nt->getNamespace();
 456
 457                 $variants = $this->autoConvertToAllVariants($link);
 458                 if($variants == false) //give up
 459                         return;
 460                 foreach( $variants as $v ) {
 461                         $varnt = Title::newFromText( $v, $ns );
 462                         if( $varnt && $varnt->getArticleID() > 0 ) {
 463                                 $nt = $varnt;
 464                                 if( !$wgDisableLangConversion )
 465                                         $link = $v;
 466                                 break;
 467                         }
 468                 }
 469         }
 470
 471     /**
 472      * returns language specific hash options
 473      *
 474      * @access public
 475      */
 476         function getExtraHashOptions() {
 477                 $variant = $this->getPreferredVariant();
 478                 return '!' . $variant ;
 479         }
 480
 481     /**
 482      * get title text as defined in the body of the article text
 483      *
 484      * @access public
 485      */
 486         function getParsedTitle() {
 487                 return $this->mTitleDisplay;
 488         }
 489
 490         /**
 491      * a write lock to the cache
 492      *
 493      * @private
 494      */
 495         function lockCache() {
 496                 global $wgMemc;
 497                 $success = false;
 498                 for($i=0; $i<30; $i++) {
 499                         if($success = $wgMemc->add($this->mCacheKey . "lock", 1, 10))
 500                                 break;
 501                         sleep(1);
 502                 }
 503                 return $success;
 504         }
 505
 506         /**
 507      * unlock cache
 508      *
 509      * @private
 510      */
 511         function unlockCache() {
 512                 global $wgMemc;
 513                 $wgMemc->delete($this->mCacheKey . "lock");
 514         }
 515
 516
 517         /**
 518      * Load default conversion tables
 519      * This method must be implemented in derived class
 520      *
 521      * @private
 522      */
 523         function loadDefaultTables() {
 524                 $name = get_class($this);
 525                 wfDie("Must implement loadDefaultTables() method in class $name");
 526         }
 527
 528         /**
 529      * load conversion tables either from the cache or the disk
 530      * @private
 531      */
 532         function loadTables($fromcache=true) {
 533                 global $wgMemc;
 534                 if( $this->mTablesLoaded )
 535                         return;
 536                 wfProfileIn( __METHOD__ );
 537                 $this->mTablesLoaded = true;
 538                 $this->mTables = false;
 539                 if($fromcache) {
 540                         wfProfileIn( __METHOD__.'-cache' );
 541                         $this->mTables = $wgMemc->get( $this->mCacheKey );
 542                         wfProfileOut( __METHOD__.'-cache' );
 543                 }
 544                 if ( !$this->mTables || !isset( $this->mTables['VERSION 2'] ) ) {
 545                         wfProfileIn( __METHOD__.'-recache' );
 546                         // not in cache, or we need a fresh reload.
 547                         // we will first load the default tables
 548                         // then update them using things in MediaWiki:Zhconversiontable/*
 549                         global $wgMessageCache;
 550                         $this->loadDefaultTables();
 551                         foreach($this->mVariants as $var) {
 552                                 $cached = $this->parseCachedTable($var);
 553                                 $this->mTables[$var]->mergeArray($cached);
 554                         }
 555
 556                         $this->postLoadTables();
 557                         $this->mTables['VERSION 2'] = true;
 558
 559                         if($this->lockCache()) {
 560                                 $wgMemc->set($this->mCacheKey, $this->mTables, 43200);
 561                                 $this->unlockCache();
 562                         }
 563                         wfProfileOut( __METHOD__.'-recache' );
 564                 }
 565                 wfProfileOut( __METHOD__ );
 566         }
 567
 568     /**
 569      * Hook for post processig after conversion tables are loaded
 570      *
 571      */
 572         function postLoadTables() {}
 573
 574     /**
 575      * Reload the conversion tables
 576      *
 577      * @private
 578      */
 579         function reloadTables() {
 580                 if($this->mTables)
 581                         unset($this->mTables);
 582                 $this->mTablesLoaded = false;
 583                 $this->loadTables(false);
 584         }
 585
 586
 587         /**
 588      * parse the conversion table stored in the cache
 589      *
 590      * the tables should be in blocks of the following form:
 591
 592      *          -{
 593      *                  word => word ;
 594      *                  word => word ;
 595      *                  ...
 596      *          }-
 597      *
 598      *  to make the tables more manageable, subpages are allowed
 599      *  and will be parsed recursively if $recursive=true
 600      *
 601      * @private
 602          */
 603         function parseCachedTable($code, $subpage='', $recursive=true) {
 604                 global $wgMessageCache;
 605                 static $parsed = array();
 606
 607                 if(!is_object($wgMessageCache))
 608                         return array();
 609
 610                 $key = 'Conversiontable/'.$code;
 611                 if($subpage)
 612                         $key .= '/' . $subpage;
 613
 614                 if(array_key_exists($key, $parsed))
 615                         return array();
 616
 617
 618                 $txt = $wgMessageCache->get( $key, true, true, true );
 619
 620                 // get all subpage links of the form
 621                 // [[MediaWiki:conversiontable/zh-xx/...|...]]
 622                 $linkhead = $this->mLangObj->getNsText(NS_MEDIAWIKI) . ':Conversiontable';
 623                 $subs = explode('[[', $txt);
 624                 $sublinks = array();
 625                 foreach( $subs as $sub ) {
 626                         $link = explode(']]', $sub, 2);
 627                         if(count($link) != 2)
 628                                 continue;
 629                         $b = explode('|', $link[0]);
 630                         $b = explode('/', trim($b[0]), 3);
 631                         if(count($b)==3)
 632                                 $sublink = $b[2];
 633                         else
 634                                 $sublink = '';
 635
 636                         if($b[0] == $linkhead && $b[1] == $code) {
 637                                 $sublinks[] = $sublink;
 638                         }
 639                 }
 640
 641
 642                 // parse the mappings in this page
 643                 $blocks = explode($this->mMarkup['begin'], $txt);
 644                 array_shift($blocks);
 645                 $ret = array();
 646                 foreach($blocks as $block) {
 647                         $mappings = explode($this->mMarkup['end'], $block, 2);
 648                         $stripped = str_replace(array("'", '"', '*','#'), '', $mappings[0]);
 649                         $table = explode( ';', $stripped );
 650                         foreach( $table as $t ) {
 651                                 $m = explode( '=>', $t );
 652                                 if( count( $m ) != 2)
 653                                         continue;
 654                                 // trim any trailling comments starting with '//'
 655                                 $tt = explode('//', $m[1], 2);
 656                                 $ret[trim($m[0])] = trim($tt[0]);
 657                         }
 658                 }
 659                 $parsed[$key] = true;
 660
 661
 662                 // recursively parse the subpages
 663                 if($recursive) {
 664                         foreach($sublinks as $link) {
 665                                 $s = $this->parseCachedTable($code, $link, $recursive);
 666                                 $ret = array_merge($ret, $s);
 667                         }
 668                 }
 669
 670                 if ($this->mUcfirst) {
 671                         foreach ($ret as $k => $v) {
 672                                 $ret[Language::ucfirst($k)] = Language::ucfirst($v);
 673                         }
 674                 }
 675                 return $ret;
 676         }
 677
 678         /**
 679          * Enclose a string with the "no conversion" tag. This is used by
 680          * various functions in the Parser
 681          *
 682          * @param string $text text to be tagged for no conversion
 683          * @return string the tagged text
 684         */
 685         function markNoConversion($text, $noParse=false) {
 686                 # don't mark if already marked
 687                 if(strpos($text, $this->mMarkup['begin']) ||
 688                    strpos($text, $this->mMarkup['end']))
 689                         return $text;
 690
 691                 $ret = $this->mMarkup['begin'] . $text . $this->mMarkup['end'];
 692                 return $ret;
 693         }
 694
 695         /**
 696          * convert the sorting key for category links. this should make different
 697          * keys that are variants of each other map to the same key
 698         */
 699         function convertCategoryKey( $key ) {
 700                 return $key;
 701         }
 702         /**
 703      * hook to refresh the cache of conversion tables when
 704      * MediaWiki:conversiontable* is updated
 705      * @private
 706         */
 707         function OnArticleSaveComplete($article, $user, $text, $summary, $isminor, $iswatch, $section) {
 708                 $titleobj = $article->getTitle();
 709                 if($titleobj->getNamespace() == NS_MEDIAWIKI) {
 710             /*
 711                         global $wgContLang; // should be an LanguageZh.
 712                         if(get_class($wgContLang) != 'languagezh')
 713                                 return true;
 714             */
 715                         $title = $titleobj->getDBkey();
 716                         $t = explode('/', $title, 3);
 717                         $c = count($t);
 718                         if( $c > 1 && $t[0] == 'Conversiontable' ) {
 719                                 if(in_array($t[1], $this->mVariants)) {
 720                                         $this->reloadTables();
 721                                 }
 722                         }
 723                 }
 724                 return true;
 725         }
 726
 727         function setNoTitleConvert(){
 728                 $this->mNoTitleConvert = true;
 729         }
 730
 731 }
 732
 733 ?>