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