languages/LanguageConverter.php

   1 <?php
   2
   3 /**
   4  * Contains the LanguageConverter class and ConverterRule class
   5  * @ingroup Language
   6  *
   7  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License
   8  * @file
   9  */
  10
  11 /**
  12  * Base class for language conversion.
  13  * @ingroup Language
  14  *
  15  * @author Zhengzhu Feng <zhengzhu@gmail.com>
  16  * @maintainers fdcn <fdcn64@gmail.com>, shinjiman <shinjiman@gmail.com>, PhiLiP <philip.npc@gmail.com>
  17  */
  18 class LanguageConverter {
  19         var $mPreferredVariant = '';
  20         var $mMainLanguageCode;
  21         var $mVariants, $mVariantFallbacks, $mVariantNames;
  22         var $mTablesLoaded = false;
  23         var $mTables;
  24         var $mNamespaceTables;
  25         var $mDoTitleConvert = true, $mDoContentConvert = true;
  26         // 'bidirectional' 'unidirectional' 'disable' for each variant
  27         var $mManualLevel;
  28         var $mTitleFromFlag = false;
  29         var $mCacheKey;
  30         var $mLangObj;
  31         var $mMarkup;
  32         var $mFlags;
  33         var $mDescCodeSep = ':', $mDescVarSep = ';';
  34         var $mUcfirst = false;
  35         var $mTitleOriginal = '';
  36         var $mTitleDisplay = '';
  37
  38         const CACHE_VERSION_KEY = 'VERSION 6';
  39
  40         /**
  41          * Constructor
  42          *
  43          * @param $langobj The Language Object
  44          * @param string $maincode the main language code of this language
  45          * @param array $variants the supported variants of this language
  46          * @param array $variantfallback the fallback language of each variant
  47          * @param array $markup array defining the markup used for manual conversion
  48          * @param array $flags array defining the custom strings that maps to the
  49          *              flags
  50          * @param array $manualLevel limit for supported variants
  51          * @public
  52          */
  53         function __construct( $langobj, $maincode,
  54                                                                 $variants = array(),
  55                                                                 $variantfallbacks = array(),
  56                                                                 $markup = array(),
  57                                                                 $flags = array(),
  58                                                                 $manualLevel = array() ) {
  59                 $this->mLangObj = $langobj;
  60                 $this->mMainLanguageCode = $maincode;
  61
  62                 global $wgDisabledVariants;
  63                 $this->mVariants = array();
  64                 foreach ( $variants as $variant ) {
  65                         if ( !in_array( $variant, $wgDisabledVariants ) ) {
  66                                 $this->mVariants[] = $variant;
  67                         }
  68                 }
  69                 $this->mVariantFallbacks = $variantfallbacks;
  70                 global $wgLanguageNames;
  71                 $this->mVariantNames = $wgLanguageNames;
  72                 $this->mCacheKey = wfMemcKey( 'conversiontables', $maincode );
  73                 $m = array(
  74                         'begin' => '-{',
  75                         'flagsep' => '|',
  76                         'unidsep' => '=>', // for unidirectional conversion
  77                         'codesep' => ':',
  78                         'varsep' => ';',
  79                         'end' => '}-'
  80                 );
  81                 $this->mMarkup = array_merge( $m, $markup );
  82                 $f = array(
  83                         // 'S' show converted text
  84                         // '+' add rules for alltext
  85                         // 'E' the gave flags is error
  86                         // these flags above are reserved for program
  87                         'A' => 'A',       // add rule for convert code (all text convert)
  88                         'T' => 'T',       // title convert
  89                         'R' => 'R',       // raw content
  90                         'D' => 'D',       // convert description (subclass implement)
  91                         '-' => '-',       // remove convert (not implement)
  92                         'H' => 'H',       // add rule for convert code
  93                                       // (but no display in placed code )
  94                         'N' => 'N'        // current variant name
  95                 );
  96                 $this->mFlags = array_merge( $f, $flags );
  97                 foreach ( $this->mVariants as $v ) {
  98                         if ( array_key_exists( $v, $manualLevel ) ) {
  99                                 $this->mManualLevel[$v] = $manualLevel[$v];
 100                         } else {
 101                                 $this->mManualLevel[$v] = 'bidirectional';
 102                         }
 103                         $this->mNamespaceTables[$v] = array();
 104                         $this->mFlags[$v] = $v;
 105                 }
 106         }
 107
 108         /**
 109          * @public
 110          */
 111         function getVariants() {
 112                 return $this->mVariants;
 113         }
 114
 115         /**
 116          * In case some variant is not defined in the markup, we need
 117          * to have some fallback. For example, in zh, normally people
 118          * will define zh-hans and zh-hant, but less so for zh-sg or zh-hk.
 119          * when zh-sg is preferred but not defined, we will pick zh-hans
 120          * in this case. Right now this is only used by zh.
 121          *
 122          * @param string $v The language code of the variant
 123          * @return string array The code of the fallback language or false if there
 124          *                      is no fallback
 125          * @public
 126          */
 127         function getVariantFallbacks( $v ) {
 128                 if ( isset( $this->mVariantFallbacks[$v] ) ) {
 129                         return $this->mVariantFallbacks[$v];
 130                 }
 131                 return $this->mMainLanguageCode;
 132         }
 133
 134         /**
 135          * Get preferred language variants.
 136          * @param boolean $fromUser Get it from $wgUser's preferences
 137          * @param boolean $fromHeader Get it from Accept-Language
 138          * @return string the preferred language code
 139          * @public
 140          */
 141         function getPreferredVariant( $fromUser = true, $fromHeader = false ) {
 142                 global $wgUser, $wgRequest, $wgVariantArticlePath,
 143                         $wgDefaultLanguageVariant, $wgOut;
 144
 145                 // bug 21974, don't return $this->mPreferredVariant if $fromUser = false
 146                 if ( $fromUser && $this->mPreferredVariant ) {
 147                         return $this->mPreferredVariant;
 148                 }
 149
 150                 // figure out user lang without constructing wgLang to avoid
 151         // infinite recursion
 152                 if ( $fromUser ) {
 153                         $defaultUserLang = $wgUser->getOption( 'language' );
 154                 } else {
 155                         $defaultUserLang = $this->mMainLanguageCode;
 156                 }
 157
 158                 $userLang = $wgRequest->getVal( 'uselang', $defaultUserLang );
 159                 // see if interface language is same as content, if not, prevent
 160                 // conversion
 161
 162                 if ( ! in_array( $userLang, $this->mVariants ) ) {
 163                         // no conversion
 164                         $this->mPreferredVariant = $this->mMainLanguageCode;
 165                         return $this->mPreferredVariant;
 166                 }
 167
 168                 // see if the preference is set in the request
 169                 $req = $wgRequest->getText( 'variant' );
 170                 if ( in_array( $req, $this->mVariants ) ) {
 171                         $this->mPreferredVariant = $req;
 172                         return $this->mPreferredVariant;
 173                 }
 174
 175                 // get language variant preference from logged in users
 176                 // Don't call this on stub objects because that causes infinite
 177                 // recursion during initialisation
 178                 if ( $fromUser && $wgUser->isLoggedIn() )  {
 179                         $this->mPreferredVariant = $wgUser->getOption( 'variant' );
 180                         return $this->mPreferredVariant;
 181                 }
 182
 183                 // see if default variant is globaly set
 184                 if ( $wgDefaultLanguageVariant != false
 185                          && in_array( $wgDefaultLanguageVariant, $this->mVariants ) ) {
 186                         $this->mPreferredVariant = $wgDefaultLanguageVariant;
 187                         return $this->mPreferredVariant;
 188                 }
 189
 190                 if ( !$this->mPreferredVariant ) {
 191                         // see if some supported language variant is set in the
 192                         // http header, but we don't set the mPreferredVariant
 193                         // variable in case this is called before the user's
 194                         // preference is loaded
 195
 196                         $acceptLanguage = $wgRequest->getHeader( 'Accept-Language' );
 197                         if ( $fromHeader && $acceptLanguage ) {
 198                                 // explode by comma
 199                                 $result = explode( ',', strtolower( $acceptLanguage ) );
 200
 201                                 $languages = array();
 202
 203                                 foreach ( $result as $elem ) {
 204                                         // if $elem likes 'zh-cn;q=0.9'
 205                                         if ( ( $posi = strpos( $elem, ';' ) ) !== false ) {
 206                                                 // get the real language code likes 'zh-cn'
 207                                                 $languages[] = substr( $elem, 0, $posi );
 208                                         } else {
 209                                                 $languages[] = $elem;
 210                                         }
 211                                 }
 212
 213                                 $fallback_languages = array();
 214                                 foreach ( $languages as $language ) {
 215                                         // strip whitespace
 216                                         $language = trim( $language );
 217                                         if ( in_array( $language, $this->mVariants ) ) {
 218                                                 return $language;
 219                                         } else {
 220                                                 // To see if there are fallbacks of current language.
 221                                                 // We record these fallback variants, and process
 222                                                 // them later.
 223                                                 $fallbacks = $this->getVariantFallbacks( $language );
 224                                                 if ( is_string( $fallbacks ) ) {
 225                                                         $fallback_languages[] = $fallbacks;
 226                                                 } elseif ( is_array( $fallbacks ) ) {
 227                                                         $fallback_languages =
 228                                                                 array_merge( $fallback_languages,
 229                                                                                          $fallbacks );
 230                                                 }
 231                                         }
 232                                 }
 233
 234                                 // process fallback languages now
 235                                 $fallback_languages = array_unique( $fallback_languages );
 236                                 foreach ( $fallback_languages as $language ) {
 237                                         if ( in_array( $language, $this->mVariants ) ) {
 238                                                 return $language;
 239                                         }
 240                                 }
 241                         }
 242                 }
 243                 return $this->mMainLanguageCode;
 244         }
 245
 246         /**
 247          * Caption convert, base on preg_replace_callback.
 248          *
 249          * To convert text in "title" or "alt", like '<img alt="text" ... '
 250          * or '<span title="text" ... '
 251          *
 252          * @return string like ' alt="yyyy"' or ' title="yyyy"'
 253          * @private
 254          */
 255         function captionConvert( $matches ) {
 256                 $toVariant = $this->getPreferredVariant();
 257                 $title = $matches[1];
 258                 $text  = $matches[2];
 259                 // we convert captions except URL
 260                 if ( !strpos( $text, '://' ) ) {
 261                         $text = $this->translate( $text, $toVariant );
 262                 }
 263                 return " $title=\"$text\"";
 264         }
 265
 266         /**
 267          * Dictionary-based conversion.
 268          *
 269          * @param string $text the text to be converted
 270          * @param string $toVariant the target language code
 271          * @return string the converted text
 272          * @private
 273          */
 274         function autoConvert( $text, $toVariant = false ) {
 275                 $fname = 'LanguageConverter::autoConvert';
 276
 277                 wfProfileIn( $fname );
 278
 279                 if ( !$this->mTablesLoaded ) {
 280                         $this->loadTables();
 281                 }
 282
 283                 if ( !$toVariant ) {
 284                         $toVariant = $this->getPreferredVariant();
 285                 }
 286                 if ( !in_array( $toVariant, $this->mVariants ) ) {
 287                         return $text;
 288                 }
 289
 290                 /* we convert everything except:
 291                    1. html markups (anything between < and >)
 292                    2. html entities
 293                    3. place holders created by the parser
 294                 */
 295                 global $wgParser;
 296                 if ( isset( $wgParser ) && $wgParser->UniqPrefix() != '' ) {
 297                         $marker = '|' . $wgParser->UniqPrefix() . '[\-a-zA-Z0-9]+';
 298                 } else {
 299                         $marker = '';
 300                 }
 301
 302                 // this one is needed when the text is inside an html markup
 303                 $htmlfix = '|<[^>]+$|^[^<>]*>';
 304
 305                 // disable convert to variants between <code></code> tags
 306                 $codefix = '<code>.+?<\/code>|';
 307                 // disable convertsion of <script type="text/javascript"> ... </script>
 308                 $scriptfix = '<script.*?>.*?<\/script>|';
 309                 // disable conversion of <pre xxxx> ... </pre>
 310                 $prefix = '<pre.*?>.*?<\/pre>|';
 311
 312                 $reg = '/' . $codefix . $scriptfix . $prefix .
 313                         '<[^>]+>|&[a-zA-Z#][a-z0-9]+;' . $marker . $htmlfix . '/s';
 314
 315                 $matches = preg_split( $reg, $text, - 1, PREG_SPLIT_OFFSET_CAPTURE );
 316
 317                 $m = array_shift( $matches );
 318
 319                 $ret = $this->translate( $m[0], $toVariant );
 320                 $mstart = $m[1] + strlen( $m[0] );
 321
 322                 // enable convertsion of '<img alt="xxxx" ... '
 323                 // or '<span title="xxxx" ... '
 324                 $captionpattern  = '/\s(title|alt)\s*=\s*"([\s\S]*?)"/';
 325
 326                 $trtext = '';
 327                 $trtextmark = "\0";
 328                 $notrtext = array();
 329                 foreach ( $matches as $m ) {
 330                         $mark = substr( $text, $mstart, $m[1] - $mstart );
 331                         $mark = preg_replace_callback( $captionpattern,
 332                                                                                    array( &$this, 'captionConvert' ),
 333                                                                                    $mark );
 334                         // Let's convert the trtext only once,
 335                         // it would give us more performance improvement
 336                         $notrtext[] = $mark;
 337                         $trtext .= $m[0] . $trtextmark;
 338                         $mstart = $m[1] + strlen( $m[0] );
 339                 }
 340                 $notrtext[] = '';
 341                 $trtext = $this->translate( $trtext, $toVariant );
 342                 $trtext = StringUtils::explode( $trtextmark, $trtext );
 343                 foreach ( $trtext as $t ) {
 344                         $ret .= array_shift( $notrtext );
 345                         $ret .= $t;
 346                 }
 347                 wfProfileOut( $fname );
 348                 return $ret;
 349         }
 350
 351         /**
 352          * Translate a string to a variant.
 353          * Doesn't process markup or do any of that other stuff, for that use
 354          * convert().
 355          *
 356          * @param string $text Text to convert
 357          * @param string $variant Variant language code
 358          * @return string Translated text
 359          * @private
 360          */
 361         function translate( $text, $variant ) {
 362                 wfProfileIn( __METHOD__ );
 363                 // If $text is empty or only includes spaces, do nothing
 364                 // Otherwise translate it
 365                 if ( trim( $text ) ) {
 366                         if ( !$this->mTablesLoaded ) {
 367                                 $this->loadTables();
 368                         }
 369                         $text = $this->mTables[$variant]->replace( $text );
 370                 }
 371                 wfProfileOut( __METHOD__ );
 372                 return $text;
 373         }
 374
 375         /**
 376          * Convert text to all supported variants.
 377          *
 378          * @param string $text the text to be converted
 379          * @return array of string
 380          * @public
 381          */
 382         function autoConvertToAllVariants( $text ) {
 383                 $fname = 'LanguageConverter::autoConvertToAllVariants';
 384                 wfProfileIn( $fname );
 385                 if ( !$this->mTablesLoaded ) {
 386                         $this->loadTables();
 387                 }
 388
 389                 $ret = array();
 390                 foreach ( $this->mVariants as $variant ) {
 391                         $ret[$variant] = $this->translate( $text, $variant );
 392                 }
 393
 394                 wfProfileOut( $fname );
 395                 return $ret;
 396         }
 397
 398         /**
 399          * Convert link text to all supported variants.
 400          *
 401          * @param string $text the text to be converted
 402          * @return array of string
 403          * @public
 404          */
 405         function convertLinkToAllVariants( $text ) {
 406                 if ( !$this->mTablesLoaded ) {
 407                         $this->loadTables();
 408                 }
 409
 410                 $ret = array();
 411                 $tarray = explode( $this->mMarkup['begin'], $text );
 412                 $tfirst = array_shift( $tarray );
 413
 414                 foreach ( $this->mVariants as $variant ) {
 415                         $ret[$variant] = $this->translate( $tfirst, $variant );
 416                 }
 417
 418                 foreach ( $tarray as $txt ) {
 419                         $marked = explode( $this->mMarkup['end'], $txt, 2 );
 420
 421                         foreach ( $this->mVariants as $variant ) {
 422                                 $ret[$variant] .= $this->mMarkup['begin'] . $marked[0] .
 423                                         $this->mMarkup['end'];
 424                                 if ( array_key_exists( 1, $marked ) ) {
 425                                         $ret[$variant] .= $this->translate( $marked[1], $variant );
 426                                 }
 427                         }
 428
 429                 }
 430
 431                 return $ret;
 432         }
 433
 434         /**
 435          * Prepare manual conversion table.
 436          * @private
 437          */
 438         function applyManualConv( $convRule ) {
 439                 // use syntax -{T|zh:TitleZh;zh-tw:TitleTw}- for custom
 440         // conversion in title
 441                 $title = $convRule->getTitle();
 442                 if ( $title ) {
 443                         $this->mTitleFromFlag = true;
 444                         $this->mTitleDisplay =  $title;
 445                 }
 446
 447                 // apply manual conversion table to global table
 448                 $convTable = $convRule->getConvTable();
 449                 $action = $convRule->getRulesAction();
 450                 foreach ( $convTable as $variant => $pair ) {
 451                         if ( !in_array( $variant, $this->mVariants ) ) {
 452                                 continue;
 453                         }
 454
 455                         if ( $action == 'add' ) {
 456                                 foreach ( $pair as $from => $to ) {
 457                                         // to ensure that $from and $to not be left blank
 458                                         // so $this->translate() could always return a string
 459                                         if ( $from || $to ) {
 460                                                 // more efficient than array_merge(), about 2.5 times.
 461                                                 $this->mTables[$variant]->setPair( $from, $to );
 462                                         }
 463                                 }
 464                         } elseif ( $action == 'remove' ) {
 465                                 $this->mTables[$variant]->removeArray( $pair );
 466                         }
 467                 }
 468         }
 469
 470         /**
 471          * Convert text using a parser object for context.
 472          * @public
 473          */
 474         function parserConvert( $text, &$parser ) {
 475                 global $wgDisableLangConversion;
 476                 /* don't do anything if this is the conversion table */
 477                 if ( $parser->getTitle()->getNamespace() == NS_MEDIAWIKI
 478                          && strpos( $parser->mTitle->getText(),
 479                                                 'Conversiontable' ) !== false ) {
 480                         return $text;
 481                 }
 482
 483                 if ( $wgDisableLangConversion ) {
 484                         return $text;
 485                 }
 486
 487                 $text = $this->convert( $text );
 488
 489                 $this->convertTitle();
 490                 $parser->mOutput->setTitleText( $this->mTitleDisplay );
 491
 492                 return $text;
 493         }
 494
 495         /**
 496          * Convert namespace.
 497          * @param string $title the title included namespace
 498          * @return array of string
 499          * @private
 500          */
 501         function convertNamespace( $title, $variant ) {
 502                 $splittitle = explode( ':', $title );
 503                 if ( count( $splittitle ) < 2 ) {
 504                         return $title;
 505                 }
 506                 if ( isset( $this->mNamespaceTables[$variant][$splittitle[0]] ) ) {
 507                         $splittitle[0] = $this->mNamespaceTables[$variant][$splittitle[0]];
 508                 }
 509                 $ret = implode( ':', $splittitle );
 510                 return $ret;
 511         }
 512
 513         /**
 514          * Pre convert title. Store the original title $this->mTitleOrginal;
 515          * store the default converted title to $this->mTitleDisplay.
 516          * @private
 517          */
 518         function preConvertTitle( $text, $variant ) {
 519                 $this->mTitleOriginal = $text;
 520
 521                 $text = $this->convertNamespace( $text, $variant );
 522                 $this->mTitleDisplay = $this->convert( $text );
 523         }
 524
 525         /**
 526          * Convert title.
 527          * @private
 528          */
 529         function convertTitle() {
 530                 global $wgDisableTitleConversion, $wgUser, $wgRequest;
 531                 $isredir = $wgRequest->getText( 'redirect', 'yes' );
 532                 $action = $wgRequest->getText( 'action' );
 533                 $linkconvert = $wgRequest->getText( 'linkconvert', 'yes' );
 534
 535                 // check for the global variable, __NOTC__ magic word, and user setting
 536                 if ( $wgDisableTitleConversion || !$this->mDoTitleConvert ||
 537                     $wgUser->getOption( 'noconvertlink' ) == 1 ) {
 538                         $this->mTitleDisplay = $this->mTitleOriginal;
 539                 } elseif ( $isredir == 'no'
 540                                    || $action == 'edit'
 541                                    || $linkconvert == 'no' ) {
 542                         // check for GET params
 543                         $this->mTitleDisplay = $this->mTitleOriginal;
 544                 }
 545         }
 546
 547         /**
 548          * Convert text to different variants of a language. The automatic
 549          * conversion is done in autoConvert(). Here we parse the text
 550          * marked with -{}-, which specifies special conversions of the
 551          * text that can not be accomplished in autoConvert().
 552          *
 553          * Syntax of the markup:
 554          * -{code1:text1;code2:text2;...}-  or
 555          * -{flags|code1:text1;code2:text2;...}-  or
 556          * -{text}- in which case no conversion should take place for text
 557          *
 558          * @param string $text text to be converted
 559          * @param bool $isTitle whether this conversion is for the article title
 560          * @return string converted text
 561          * @public
 562          */
 563         function convert( $text, $isTitle = false ) {
 564
 565                 $mw =& MagicWord::get( 'notitleconvert' );
 566                 if ( $mw->matchAndRemove( $text ) ) {
 567                         $this->mDoTitleConvert = false;
 568                 }
 569                 $mw =& MagicWord::get( 'nocontentconvert' );
 570                 if ( $mw->matchAndRemove( $text ) ) {
 571                         $this->mDoContentConvert = false;
 572                 }
 573
 574                 // no conversion if redirecting
 575                 $mw =& MagicWord::get( 'redirect' );
 576                 if ( $mw->matchStart( $text ) ) {
 577                         return $text;
 578                 }
 579
 580                 $plang = $this->getPreferredVariant();
 581
 582                 // for title convertion
 583                 if ( $isTitle ) {
 584                         $this->preConvertTitle( $text, $plang );
 585                         return $text;
 586                 }
 587
 588                 $tarray = StringUtils::explode( $this->mMarkup['end'], $text );
 589                 $text = '';
 590
 591                 foreach ( $tarray as $txt ) {
 592
 593                         $marked = explode( $this->mMarkup['begin'], $txt, 2 );
 594
 595                         if ( $this->mDoContentConvert ) {
 596                                 // Bug 19620: should convert a string immediately after a
 597                 // new rule added.
 598                                 $text .= $this->autoConvert( $marked[0], $plang );
 599                         } else {
 600                                 $text .= $marked[0];
 601                         }
 602
 603                         if ( array_key_exists( 1, $marked ) ) {
 604                                 $crule = new ConverterRule( $marked[1], $this );
 605                                 $crule->parse( $plang );
 606                                 $text .= $crule->getDisplay();
 607                                 $this->applyManualConv( $crule );
 608                         } else {
 609                                 $text .= $this->mMarkup['end'];
 610                         }
 611                 }
 612
 613                 // Remove the last delimiter (wasn't real)
 614                 $text = substr( $text, 0, - strlen( $this->mMarkup['end'] ) );
 615                 return $text;
 616         }
 617
 618         /**
 619          * If a language supports multiple variants, it is
 620          * possible that non-existing link in one variant
 621          * actually exists in another variant. This function
 622          * tries to find it. See e.g. LanguageZh.php
 623          *
 624          * @param string $link the name of the link
 625          * @param mixed $nt the title object of the link
 626          * @param boolean $ignoreOtherCond: to disable other conditions when
 627          *      we need to transclude a template or update a category's link
 628          * @return null the input parameters may be modified upon return
 629          * @public
 630          */
 631         function findVariantLink( &$link, &$nt, $ignoreOtherCond = false ) {
 632                 # If the article has already existed, there is no need to
 633                 # check it again, otherwise it may cause a fault.
 634                 if ( is_object( $nt ) && $nt->exists() ) {
 635                         return;
 636                 }
 637
 638                 global $wgDisableLangConversion, $wgDisableTitleConversion, $wgRequest,
 639                         $wgUser;
 640                 $isredir = $wgRequest->getText( 'redirect', 'yes' );
 641                 $action = $wgRequest->getText( 'action' );
 642                 $linkconvert = $wgRequest->getText( 'linkconvert', 'yes' );
 643                 $disableLinkConversion = $wgDisableLangConversion
 644                         || $wgDisableTitleConversion;
 645                 $linkBatch = new LinkBatch();
 646
 647                 $ns = NS_MAIN;
 648
 649                 if ( $disableLinkConversion ||
 650                          ( !$ignoreOtherCond &&
 651                            ( $isredir == 'no'
 652                                  || $action == 'edit'
 653                                  || $action == 'submit'
 654                                  || $linkconvert == 'no'
 655                                  || $wgUser->getOption( 'noconvertlink' ) == 1 ) ) ) {
 656                         return;
 657                 }
 658
 659                 if ( is_object( $nt ) ) {
 660                         $ns = $nt->getNamespace();
 661                 }
 662
 663                 $variants = $this->autoConvertToAllVariants( $link );
 664                 if ( $variants == false ) { // give up
 665                         return;
 666                 }
 667
 668                 $titles = array();
 669
 670                 foreach ( $variants as $v ) {
 671                         if ( $v != $link ) {
 672                                 $varnt = Title::newFromText( $v, $ns );
 673                                 if ( !is_null( $varnt ) ) {
 674                                         $linkBatch->addObj( $varnt );
 675                                         $titles[] = $varnt;
 676                                 }
 677                         }
 678                 }
 679
 680                 // fetch all variants in single query
 681                 $linkBatch->execute();
 682
 683                 foreach ( $titles as $varnt ) {
 684                         if ( $varnt->getArticleID() > 0 ) {
 685                                 $nt = $varnt;
 686                                 $link = $varnt->getText();
 687                                 break;
 688                         }
 689                 }
 690         }
 691
 692     /**
 693          * Returns language specific hash options.
 694          *
 695          * @public
 696          */
 697         function getExtraHashOptions() {
 698                 $variant = $this->getPreferredVariant();
 699                 return '!' . $variant ;
 700         }
 701
 702     /**
 703          * Get title text as defined in the body of the article text.
 704          *
 705          * @public
 706          */
 707         function getParsedTitle() {
 708                 return $this->mTitleDisplay;
 709         }
 710
 711         /**
 712          * Load default conversion tables.
 713          * This method must be implemented in derived class.
 714          *
 715          * @private
 716          */
 717         function loadDefaultTables() {
 718                 $name = get_class( $this );
 719                 wfDie( "Must implement loadDefaultTables() method in class $name" );
 720         }
 721
 722         /**
 723          * Load conversion tables either from the cache or the disk.
 724          * @private
 725          */
 726         function loadTables( $fromcache = true ) {
 727                 global $wgMemc;
 728                 if ( $this->mTablesLoaded ) {
 729                         return;
 730                 }
 731                 wfProfileIn( __METHOD__ );
 732                 $this->mTablesLoaded = true;
 733                 $this->mTables = false;
 734                 if ( $fromcache ) {
 735                         wfProfileIn( __METHOD__ . '-cache' );
 736                         $this->mTables = $wgMemc->get( $this->mCacheKey );
 737                         wfProfileOut( __METHOD__ . '-cache' );
 738                 }
 739                 if ( !$this->mTables
 740                          || !isset( $this->mTables[self::CACHE_VERSION_KEY] ) ) {
 741                         wfProfileIn( __METHOD__ . '-recache' );
 742                         // not in cache, or we need a fresh reload.
 743                         // we will first load the default tables
 744                         // then update them using things in MediaWiki:Zhconversiontable/*
 745                         $this->loadDefaultTables();
 746                         foreach ( $this->mVariants as $var ) {
 747                                 $cached = $this->parseCachedTable( $var );
 748                                 $this->mTables[$var]->mergeArray( $cached );
 749                         }
 750
 751                         $this->postLoadTables();
 752                         $this->mTables[self::CACHE_VERSION_KEY] = true;
 753
 754                         $wgMemc->set( $this->mCacheKey, $this->mTables, 43200 );
 755                         wfProfileOut( __METHOD__ . '-recache' );
 756                 }
 757                 wfProfileOut( __METHOD__ );
 758         }
 759
 760     /**
 761          * Hook for post processig after conversion tables are loaded.
 762          *
 763          */
 764         function postLoadTables() { }
 765
 766     /**
 767          * Reload the conversion tables.
 768          *
 769          * @private
 770          */
 771         function reloadTables() {
 772                 if ( $this->mTables ) {
 773                         unset( $this->mTables );
 774                 }
 775                 $this->mTablesLoaded = false;
 776                 $this->loadTables( false );
 777         }
 778
 779
 780         /**
 781          * Parse the conversion table stored in the cache.
 782          *
 783          * The tables should be in blocks of the following form:
 784          *              -{
 785          *                      word => word ;
 786          *                      word => word ;
 787          *                      ...
 788          *              }-
 789          *
 790          *      To make the tables more manageable, subpages are allowed
 791          *      and will be parsed recursively if $recursive == true.
 792          *
 793          */
 794         function parseCachedTable( $code, $subpage = '', $recursive = true ) {
 795                 global $wgMessageCache;
 796                 static $parsed = array();
 797
 798                 if ( !is_object( $wgMessageCache ) ) {
 799                         return array();
 800                 }
 801
 802                 $key = 'Conversiontable/' . $code;
 803                 if ( $subpage ) {
 804                         $key .= '/' . $subpage;
 805                 }
 806                 if ( array_key_exists( $key, $parsed ) ) {
 807                         return array();
 808                 }
 809
 810                 if ( strpos( $code, '/' ) === false ) {
 811                         $txt = $wgMessageCache->get( 'Conversiontable', true, $code );
 812                 } else {
 813                         $title = Title::makeTitleSafe( NS_MEDIAWIKI,
 814                                                                                    "Conversiontable/$code" );
 815                         if ( $title && $title->exists() ) {
 816                                 $article = new Article( $title );
 817                                 $txt = $article->getContents();
 818                         } else {
 819                                 $txt = '';
 820                         }
 821                 }
 822
 823                 // get all subpage links of the form
 824                 // [[MediaWiki:conversiontable/zh-xx/...|...]]
 825                 $linkhead = $this->mLangObj->getNsText( NS_MEDIAWIKI ) .
 826                         ':Conversiontable';
 827                 $subs = explode( '[[', $txt );
 828                 $sublinks = array();
 829                 foreach ( $subs as $sub ) {
 830                         $link = explode( ']]', $sub, 2 );
 831                         if ( count( $link ) != 2 ) {
 832                                 continue;
 833                         }
 834                         $b = explode( '|', $link[0] );
 835                         $b = explode( '/', trim( $b[0] ), 3 );
 836                         if ( count( $b ) == 3 ) {
 837                                 $sublink = $b[2];
 838                         } else {
 839                                 $sublink = '';
 840                         }
 841
 842                         if ( $b[0] == $linkhead && $b[1] == $code ) {
 843                                 $sublinks[] = $sublink;
 844                         }
 845                 }
 846
 847
 848                 // parse the mappings in this page
 849                 $blocks = explode( $this->mMarkup['begin'], $txt );
 850                 array_shift( $blocks );
 851                 $ret = array();
 852                 foreach ( $blocks as $block ) {
 853                         $mappings = explode( $this->mMarkup['end'], $block, 2 );
 854                         $stripped = str_replace( array( "'", '"', '*', '#' ), '',
 855                                                                          $mappings[0] );
 856                         $table = explode( ';', $stripped );
 857                         foreach ( $table as $t ) {
 858                                 $m = explode( '=>', $t );
 859                                 if ( count( $m ) != 2 )
 860                                         continue;
 861                                 // trim any trailling comments starting with '//'
 862                                 $tt = explode( '//', $m[1], 2 );
 863                                 $ret[trim( $m[0] )] = trim( $tt[0] );
 864                         }
 865                 }
 866                 $parsed[$key] = true;
 867
 868
 869                 // recursively parse the subpages
 870                 if ( $recursive ) {
 871                         foreach ( $sublinks as $link ) {
 872                                 $s = $this->parseCachedTable( $code, $link, $recursive );
 873                                 $ret = array_merge( $ret, $s );
 874                         }
 875                 }
 876
 877                 if ( $this->mUcfirst ) {
 878                         foreach ( $ret as $k => $v ) {
 879                                 $ret[Language::ucfirst( $k )] = Language::ucfirst( $v );
 880                         }
 881                 }
 882                 return $ret;
 883         }
 884
 885         /**
 886          * Enclose a string with the "no conversion" tag. This is used by
 887          * various functions in the Parser.
 888          *
 889          * @param string $text text to be tagged for no conversion
 890          * @return string the tagged text
 891          * @public
 892          */
 893         function markNoConversion( $text, $noParse = false ) {
 894                 # don't mark if already marked
 895                 if ( strpos( $text, $this->mMarkup['begin'] )
 896                         || strpos( $text, $this->mMarkup['end'] ) ) {
 897                         return $text;
 898                 }
 899
 900                 $ret = $this->mMarkup['begin'] . 'R|' . $text . $this->mMarkup['end'];
 901                 return $ret;
 902         }
 903
 904         /**
 905          * Convert the sorting key for category links. This should make different
 906          * keys that are variants of each other map to the same key.
 907          */
 908         function convertCategoryKey( $key ) {
 909                 return $key;
 910         }
 911
 912         /**
 913          * Hook to refresh the cache of conversion tables when
 914          * MediaWiki:conversiontable* is updated.
 915          * @private
 916          */
 917         function OnArticleSaveComplete( $article, $user, $text, $summary, $isminor,
 918                         $iswatch, $section, $flags, $revision ) {
 919                 $titleobj = $article->getTitle();
 920                 if ( $titleobj->getNamespace() == NS_MEDIAWIKI ) {
 921                         $title = $titleobj->getDBkey();
 922                         $t = explode( '/', $title, 3 );
 923                         $c = count( $t );
 924                         if ( $c > 1 && $t[0] == 'Conversiontable' ) {
 925                                 if ( in_array( $t[1], $this->mVariants ) ) {
 926                                         $this->reloadTables();
 927                                 }
 928                         }
 929                 }
 930                 return true;
 931         }
 932
 933         /**
 934          * Armour rendered math against conversion.
 935          * Wrap math into rawoutput -{R| math }- syntax.
 936          * @public
 937          */
 938         function armourMath( $text ) {
 939                 // we need to convert '-{' and '}-' to '-&#123;' and '&#125;-'
 940                 // to avoid a unwanted '}-' appeared after the math-image.
 941                 $text = strtr( $text, array( '-{' => '-&#123;', '}-' => '&#125;-' ) );
 942                 $ret = $this->mMarkup['begin'] . 'R|' . $text . $this->mMarkup['end'];
 943                 return $ret;
 944         }
 945 }
 946
 947 /**
 948  * Parser for rules of language conversion , parse rules in -{ }- tag.
 949  * @ingroup Language
 950  * @author fdcn <fdcn64@gmail.com>, PhiLiP <philip.npc@gmail.com>
 951  */
 952 class ConverterRule {
 953         var $mText; // original text in -{text}-
 954         var $mConverter; // LanguageConverter object
 955         var $mManualCodeError = '<strong class="error">code error!</strong>';
 956         var $mRuleDisplay = '';
 957         var $mRuleTitle = false;
 958         var $mRules = '';// string : the text of the rules
 959         var $mRulesAction = 'none';
 960         var $mFlags = array();
 961         var $mConvTable = array();
 962         var $mBidtable = array();// array of the translation in each variant
 963         var $mUnidtable = array();// array of the translation in each variant
 964
 965         /**
 966          * Constructor
 967          *
 968          * @param string $text the text between -{ and }-
 969          * @param object $converter a  LanguageConverter object
 970          * @access public
 971          */
 972         function __construct( $text, $converter ) {
 973                 $this->mText = $text;
 974                 $this->mConverter = $converter;
 975                 foreach ( $converter->mVariants as $v ) {
 976                         $this->mConvTable[$v] = array();
 977                 }
 978         }
 979
 980         /**
 981          * Check if variants array in convert array.
 982          *
 983          * @param string $variant Variant language code
 984          * @return string Translated text
 985          * @public
 986          */
 987         function getTextInBidtable( $variants ) {
 988                 if ( is_string( $variants ) ) {
 989                         $variants = array( $variants );
 990                 }
 991                 if ( !is_array( $variants ) ) {
 992                         return false;
 993                 }
 994                 foreach ( $variants as $variant ) {
 995                         if ( array_key_exists( $variant, $this->mBidtable ) ) {
 996                                 return $this->mBidtable[$variant];
 997                         }
 998                 }
 999                 return false;
1000         }
1001
1002         /**
1003          * Parse flags with syntax -{FLAG| ... }-
1004          * @private
1005          */
1006         function parseFlags() {
1007                 $text = $this->mText;
1008                 if ( strlen( $text ) < 2 ) {
1009                         $this->mFlags = array( 'R' );
1010                         $this->mRules = $text;
1011                         return;
1012                 }
1013
1014                 $flags = array();
1015                 $markup = $this->mConverter->mMarkup;
1016                 $validFlags = $this->mConverter->mFlags;
1017                 $variants = $this->mConverter->mVariants;
1018
1019                 $tt = explode( $markup['flagsep'], $text, 2 );
1020                 if ( count( $tt ) == 2 ) {
1021                         $f = explode( $markup['varsep'], $tt[0] );
1022                         foreach ( $f as $ff ) {
1023                                 $ff = trim( $ff );
1024                                 if ( array_key_exists( $ff, $validFlags )
1025                                          && !in_array( $validFlags[$ff], $flags ) ) {
1026                                         $flags[] = $validFlags[$ff];
1027                                 }
1028                         }
1029                         $rules = $tt[1];
1030                 } else {
1031                         $rules = $text;
1032                 }
1033
1034                 // check flags
1035                 if ( in_array( 'R', $flags ) ) {
1036                         $flags = array( 'R' );// remove other flags
1037                 } elseif ( in_array( 'N', $flags ) ) {
1038                         $flags = array( 'N' );// remove other flags
1039                 } elseif ( in_array( '-', $flags ) ) {
1040                         $flags = array( '-' );// remove other flags
1041                 } elseif ( count( $flags ) == 1 && $flags[0] == 'T' ) {
1042                         $flags[] = 'H';
1043                 } elseif ( in_array( 'H', $flags ) ) {
1044                         // replace A flag, and remove other flags except T
1045                         $temp = array( '+', 'H' );
1046                         if ( in_array( 'T', $flags ) ) {
1047                                 $temp[] = 'T';
1048                         }
1049                         if ( in_array( 'D', $flags ) ) {
1050                                 $temp[] = 'D';
1051                         }
1052                         $flags = $temp;
1053                 } else {
1054                         if ( in_array( 'A', $flags ) ) {
1055                                 $flags[] = '+';
1056                                 $flags[] = 'S';
1057                         }
1058                         if ( in_array( 'D', $flags ) ) {
1059                                 $flags = array_diff( $flags, array( 'S' ) );
1060                         }
1061                         $flags_temp = array();
1062                         foreach ( $variants as $variant ) {
1063                                 // try to find flags like "zh-hans", "zh-hant"
1064                                 // allow syntaxes like "-{zh-hans;zh-hant|XXXX}-"
1065                                 if ( in_array( $variant, $flags ) )
1066                                         $flags_temp[] = $variant;
1067                         }
1068                         if ( count( $flags_temp ) !== 0 ) {
1069                                 $flags = $flags_temp;
1070                         }
1071                 }
1072                 if ( count( $flags ) == 0 ) {
1073                         $flags = array( 'S' );
1074                 }
1075                 $this->mRules = $rules;
1076                 $this->mFlags = $flags;
1077         }
1078
1079         /**
1080          * Generate conversion table.
1081          * @private
1082          */
1083         function parseRules() {
1084                 $rules = $this->mRules;
1085                 $flags = $this->mFlags;
1086                 $bidtable = array();
1087                 $unidtable = array();
1088                 $markup = $this->mConverter->mMarkup;
1089                 $variants = $this->mConverter->mVariants;
1090
1091                 // varsep_pattern for preg_split:
1092                 // text should be splited by ";" only if a valid variant
1093                 // name exist after the markup, for example:
1094                 //  -{zh-hans:<span style="font-size:120%;">xxx</span>;zh-hant:\
1095         //    <span style="font-size:120%;">yyy</span>;}-
1096                 // we should split it as:
1097                 //  array(
1098                 //        [0] => 'zh-hans:<span style="font-size:120%;">xxx</span>'
1099                 //        [1] => 'zh-hant:<span style="font-size:120%;">yyy</span>'
1100                 //        [2] => ''
1101                 //       )
1102                 $varsep_pattern = '/' . $markup['varsep'] . '\s*' . '(?=';
1103                 foreach ( $variants as $variant ) {
1104                         // zh-hans:xxx;zh-hant:yyy
1105                         $varsep_pattern .= $variant . '\s*' . $markup['codesep'] . '|';
1106                         // xxx=>zh-hans:yyy; xxx=>zh-hant:zzz
1107                         $varsep_pattern .= '[^;]*?' . $markup['unidsep'] . '\s*' . $variant
1108                                                         . '\s*' . $markup['codesep'] . '|';
1109                 }
1110                 $varsep_pattern .= '\s*$)/';
1111
1112                 $choice = preg_split( $varsep_pattern, $rules );
1113
1114                 foreach ( $choice as $c ) {
1115                         $v  = explode( $markup['codesep'], $c, 2 );
1116                         if ( count( $v ) != 2 ) {
1117                                 // syntax error, skip
1118                                 continue;
1119                         }
1120                         $to = trim( $v[1] );
1121                         $v  = trim( $v[0] );
1122                         $u  = explode( $markup['unidsep'], $v, 2 );
1123                         // if $to is empty, strtr() could return a wrong result
1124                         if ( count( $u ) == 1 && $to && in_array( $v, $variants ) ) {
1125                                 $bidtable[$v] = $to;
1126                         } elseif ( count( $u ) == 2 ) {
1127                                 $from = trim( $u[0] );
1128                                 $v    = trim( $u[1] );
1129                                 if ( array_key_exists( $v, $unidtable )
1130                                          && !is_array( $unidtable[$v] )
1131                                          && $to
1132                                          && in_array( $v, $variants ) ) {
1133                                         $unidtable[$v] = array( $from => $to );
1134                                 } elseif ( $to && in_array( $v, $variants ) ) {
1135                                         $unidtable[$v][$from] = $to;
1136                                 }
1137                         }
1138                         // syntax error, pass
1139                         if ( !array_key_exists( $v, $this->mConverter->mVariantNames ) ) {
1140                                 $bidtable = array();
1141                                 $unidtable = array();
1142                                 break;
1143                         }
1144                 }
1145                 $this->mBidtable = $bidtable;
1146                 $this->mUnidtable = $unidtable;
1147         }
1148
1149         /**
1150          * @private
1151          */
1152         function getRulesDesc() {
1153                 $codesep = $this->mConverter->mDescCodeSep;
1154                 $varsep = $this->mConverter->mDescVarSep;
1155                 $text = '';
1156                 foreach ( $this->mBidtable as $k => $v ) {
1157                         $text .= $this->mConverter->mVariantNames[$k] . "$codesep$v$varsep";
1158                 }
1159                 foreach ( $this->mUnidtable as $k => $a ) {
1160                         foreach ( $a as $from => $to ) {
1161                                 $text .= $from . '⇒' . $this->mConverter->mVariantNames[$k] .
1162                                         "$codesep$to$varsep";
1163                         }
1164                 }
1165                 return $text;
1166         }
1167
1168         /**
1169          * Parse rules conversion.
1170          * @private
1171          */
1172         function getRuleConvertedStr( $variant, $doConvert ) {
1173                 $bidtable = $this->mBidtable;
1174                 $unidtable = $this->mUnidtable;
1175
1176                 if ( count( $bidtable ) + count( $unidtable ) == 0 ) {
1177                         return $this->mRules;
1178                 } elseif ( $doConvert ) { // the text converted
1179                         // display current variant in bidirectional array
1180                         $disp = $this->getTextInBidtable( $variant );
1181                         // or display current variant in fallbacks
1182                         if ( !$disp ) {
1183                                 $disp = $this->getTextInBidtable(
1184                                                 $this->mConverter->getVariantFallbacks( $variant ) );
1185                         }
1186                         // or display current variant in unidirectional array
1187                         if ( !$disp && array_key_exists( $variant, $unidtable ) ) {
1188                                 $disp = array_values( $unidtable[$variant] );
1189                                 $disp = $disp[0];
1190                         }
1191                         // or display frist text under disable manual convert
1192                         if ( !$disp
1193                                  && $this->mConverter->mManualLevel[$variant] == 'disable' ) {
1194                                 if ( count( $bidtable ) > 0 ) {
1195                                         $disp = array_values( $bidtable );
1196                                         $disp = $disp[0];
1197                                 } else {
1198                                         $disp = array_values( $unidtable );
1199                                         $disp = array_values( $disp[0] );
1200                                         $disp = $disp[0];
1201                                 }
1202                         }
1203                         return $disp;
1204                 } else { // no convert
1205                         return $this->mRules;
1206                 }
1207         }
1208
1209         /**
1210          * Generate conversion table for all text.
1211          * @private
1212          */
1213         function generateConvTable() {
1214                 $flags = $this->mFlags;
1215                 $bidtable = $this->mBidtable;
1216                 $unidtable = $this->mUnidtable;
1217                 $manLevel = $this->mConverter->mManualLevel;
1218
1219                 $vmarked = array();
1220                 foreach ( $this->mConverter->mVariants as $v ) {
1221                         /* for bidirectional array
1222                                 fill in the missing variants, if any,
1223                                 with fallbacks */
1224                         if ( !array_key_exists( $v, $bidtable ) ) {
1225                                 $variantFallbacks =
1226                                         $this->mConverter->getVariantFallbacks( $v );
1227                                 $vf = $this->getTextInBidtable( $variantFallbacks );
1228                                 if ( $vf ) {
1229                                         $bidtable[$v] = $vf;
1230                                 }
1231                         }
1232
1233                         if ( array_key_exists( $v, $bidtable ) ) {
1234                                 foreach ( $vmarked as $vo ) {
1235                                         // use syntax: -{A|zh:WordZh;zh-tw:WordTw}-
1236                                         // or -{H|zh:WordZh;zh-tw:WordTw}-
1237                                         // or -{-|zh:WordZh;zh-tw:WordTw}-
1238                                         // to introduce a custom mapping between
1239                                         // words WordZh and WordTw in the whole text
1240                                         if ( $manLevel[$v] == 'bidirectional' ) {
1241                                                 $this->mConvTable[$v][$bidtable[$vo]] = $bidtable[$v];
1242                                         }
1243                                         if ( $manLevel[$vo] == 'bidirectional' ) {
1244                                                 $this->mConvTable[$vo][$bidtable[$v]] = $bidtable[$vo];
1245                                         }
1246                                 }
1247                                 $vmarked[] = $v;
1248                         }
1249                         /*for unidirectional array fill to convert tables */
1250                         if ( ( $manLevel[$v] == 'bidirectional'
1251                                    || $manLevel[$v] == 'unidirectional' )
1252                                  && array_key_exists( $v, $unidtable ) ) {
1253                                 $ct = $this->mConvTable[$v];
1254                                 $this->mConvTable[$v] = array_merge( $ct, $unidtable[$v] );
1255                         }
1256                 }
1257         }
1258
1259         /**
1260          * Parse rules and flags.
1261          * @public
1262          */
1263         function parse( $variant = NULL ) {
1264                 if ( !$variant ) {
1265                         $variant = $this->mConverter->getPreferredVariant();
1266                 }
1267
1268                 $variants = $this->mConverter->mVariants;
1269                 $this->parseFlags();
1270                 $flags = $this->mFlags;
1271
1272                 // convert to specified variant
1273                 // syntax: -{zh-hans;zh-hant[;...]|<text to convert>}-
1274                 if ( count( array_diff( $flags, $variants ) ) == 0
1275                          and count( $flags ) != 0 ) {
1276                         // check if current variant in flags
1277                         if ( in_array( $variant, $flags ) ) {
1278                                 // then convert <text to convert> to current language
1279                                 $this->mRules = $this->mConverter->autoConvert( $this->mRules,
1280                                                                                                                                 $variant );
1281                         } else { // if current variant no in flags,
1282                                    // then we check its fallback variants.
1283                                 $variantFallbacks =
1284                                         $this->mConverter->getVariantFallbacks( $variant );
1285                                 foreach ( $variantFallbacks as $variantFallback ) {
1286                                         // if current variant's fallback exist in flags
1287                                         if ( in_array( $variantFallback, $flags ) ) {
1288                                                 // then convert <text to convert> to fallback language
1289                                                 $this->mRules =
1290                                                         $this->mConverter->autoConvert( $this->mRules,
1291                                                                                                                         $variantFallback );
1292                                                 break;
1293                                         }
1294                                 }
1295                         }
1296                         $this->mFlags = $flags = array( 'R' );
1297                 }
1298
1299                 if ( !in_array( 'R', $flags ) || !in_array( 'N', $flags ) ) {
1300                         // decode => HTML entities modified by Sanitizer::removeHTMLtags
1301                         $this->mRules = str_replace( '=&gt;', '=>', $this->mRules );
1302
1303                         $this->parseRules();
1304                 }
1305                 $rules = $this->mRules;
1306
1307                 if ( count( $this->mBidtable ) == 0
1308                          && count( $this->mUnidtable ) == 0 ) {
1309                         if ( in_array( '+', $flags ) || in_array( '-', $flags ) ) {
1310                                 // fill all variants if text in -{A/H/-|text} without rules
1311                                 foreach ( $this->mConverter->mVariants as $v ) {
1312                                         $this->mBidtable[$v] = $rules;
1313                                 }
1314                         } elseif ( !in_array( 'N', $flags ) && !in_array( 'T', $flags ) ) {
1315                                 $this->mFlags = $flags = array( 'R' );
1316                         }
1317                 }
1318
1319                 if ( in_array( 'R', $flags ) ) {
1320                         // if we don't do content convert, still strip the -{}- tags
1321                         $this->mRuleDisplay = $rules;
1322                 } elseif ( in_array( 'N', $flags ) ) {
1323                         // proces N flag: output current variant name
1324                         $this->mRuleDisplay =
1325                                 $this->mConverter->mVariantNames[ trim( $rules ) ];
1326                 } elseif ( in_array( 'D', $flags ) ) {
1327                         // proces D flag: output rules description
1328                         $this->mRuleDisplay = $this->getRulesDesc();
1329                 } elseif ( in_array( 'H', $flags ) || in_array( '-', $flags ) ) {
1330                         // proces H,- flag or T only: output nothing
1331                         $this->mRuleDisplay = '';
1332                 } elseif ( in_array( 'S', $flags ) ) {
1333                         $this->mRuleDisplay = $this->getRuleConvertedStr( $variant,
1334                                                         $this->mConverter->mDoContentConvert );
1335                 } else {
1336                         $this->mRuleDisplay = $this->mManualCodeError;
1337                 }
1338                 // proces T flag
1339                 if ( in_array( 'T', $flags ) ) {
1340                         $this->mRuleTitle = $this->getRuleConvertedStr( $variant,
1341                                                         $this->mConverter->mDoTitleConvert );
1342                 }
1343
1344                 if ( in_array( '-', $flags ) ) {
1345                         $this->mRulesAction = 'remove';
1346                 }
1347                 if ( in_array( '+', $flags ) ) {
1348                         $this->mRulesAction = 'add';
1349                 }
1350
1351                 $this->generateConvTable();
1352         }
1353
1354         /**
1355          * @public
1356          */
1357         function hasRules() {
1358                 // TODO:
1359         }
1360
1361         /**
1362          * Get display text on markup -{...}-
1363          * @public
1364          */
1365         function getDisplay() {
1366                 return $this->mRuleDisplay;
1367         }
1368
1369         /**
1370          * Get converted title.
1371          * @public
1372          */
1373         function getTitle() {
1374                 return $this->mRuleTitle;
1375         }
1376
1377         /**
1378          * Return how deal with conversion rules.
1379          * @public
1380          */
1381         function getRulesAction() {
1382                 return $this->mRulesAction;
1383         }
1384
1385         /**
1386          * Get conversion table. ( bidirectional and unidirectional
1387          * conversion table )
1388          * @public
1389          */
1390         function getConvTable() {
1391                 return $this->mConvTable;
1392         }
1393
1394         /**
1395          * Get conversion rules string.
1396          * @public
1397          */
1398         function getRules() {
1399                 return $this->mRules;
1400         }
1401
1402         /**
1403          * Get conversion flags.
1404          * @public
1405          */
1406         function getFlags() {
1407                 return $this->mFlags;
1408         }
1409 }