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