functions/i18n.php

   1 <?php
   2
   3 /**
   4  * SquirrelMail internationalization functions
   5  *
   6  * Copyright (c) 1999-2004 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * This file contains variuos functions that are needed to do
  10  * internationalization of SquirrelMail.
  11  *
  12  * Internally the output character set is used. Other characters are
  13  * encoded using Unicode entities according to HTML 4.0.
  14  *
  15  * @version $Id$
  16  * @package squirrelmail
  17  * @subpackage i18n
  18  */
  19
  20 /** Everything uses global.php... */
  21 require_once(SM_PATH . 'functions/global.php');
  22
  23 /**
  24  * Converts string from given charset to charset, that can be displayed by user translation.
  25  *
  26  * Function by default returns html encoded strings, if translation uses different encoding.
  27  * If Japanese translation is used - function returns string converted to euc-jp
  28  * If iconv or recode functions are enabled and translation uses utf-8 - function returns utf-8 encoded string.
  29  * If $charset is not supported - function returns unconverted string.
  30  *
  31  * sanitizing of html tags is also done by this function.
  32  *
  33  * @param string $charset
  34  * @param string $string Text to be decoded
  35  * @return string decoded string
  36  */
  37 function charset_decode ($charset, $string) {
  38     global $languages, $squirrelmail_language, $default_charset;
  39     global $use_php_recode, $use_php_iconv, $aggressive_decoding;
  40
  41     if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
  42         function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
  43         $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode', $string);
  44     }
  45
  46     $charset = strtolower($charset);
  47
  48     set_my_charset();
  49
  50     // Variables that allow to use functions without function_exist() calls
  51     if (! isset($use_php_recode) || $use_php_recode=="" ) {
  52       $use_php_recode=false; }
  53     if (! isset($use_php_iconv) || $use_php_iconv=="" ) {
  54          $use_php_iconv=false; }
  55
  56     // Don't do conversion if charset is the same.
  57     if ( $charset == strtolower($default_charset) )
  58           return htmlspecialchars($string);
  59
  60     // catch iso-8859-8-i thing
  61     if ( $charset == "iso-8859-8-i" )
  62               $charset = "iso-8859-8";
  63
  64     /*
  65      * Recode converts html special characters automatically if you use
  66      * 'charset..html' decoding. There is no documented way to put -d option
  67      * into php recode function call.
  68      */
  69     if ( $use_php_recode ) {
  70       if ( $default_charset == "utf-8" ) {
  71         // other charsets can be converted to utf-8 without loss.
  72         // and output string is smaller
  73         $string = recode_string($charset . "..utf-8",$string);
  74         return htmlspecialchars($string);
  75       } else {
  76         $string = recode_string($charset . "..html",$string);
  77         // recode does not convert single quote, htmlspecialchars does.
  78         $string = str_replace("'", '&#039;', $string);
  79         return $string;
  80       }
  81     }
  82
  83     // iconv functions does not have html target and can be used only with utf-8
  84     if ( $use_php_iconv && $default_charset=='utf-8') {
  85       $string = iconv($charset,$default_charset,$string);
  86       return htmlspecialchars($string);
  87     }
  88
  89     // If we don't use recode and iconv, we'll do it old way.
  90
  91     /* All HTML special characters are 7 bit and can be replaced first */
  92
  93     $string = htmlspecialchars ($string);
  94
  95     /* controls cpu and memory intensive decoding cycles */
  96     if (! isset($aggressive_decoding) || $aggressive_decoding=="" ) {
  97          $aggressive_decoding=false; }
  98
  99     $decode=fixcharset($charset);
 100     $decodefile=SM_PATH . 'functions/decode/' . $decode . '.php';
 101     if (file_exists($decodefile)) {
 102       include_once($decodefile);
 103       $ret = call_user_func('charset_decode_'.$decode, $string);
 104     } else {
 105       $ret = $string;
 106     }
 107     return( $ret );
 108 }
 109
 110 /**
 111  * Converts html string to given charset
 112  * @param string $string
 113  * @param string $charset
 114  * @param boolean $htmlencode keep htmlspecialchars encoding
 115  * @param string
 116  */
 117 function charset_encode($string,$charset,$htmlencode=true) {
 118   global $default_charset;
 119
 120   // Undo html special chars
 121   if (! $htmlencode ) {
 122       $string = str_replace(array('&amp;','&gt;','&lt;','&quot;'),array('&','>','<','"'),$string);
 123   }
 124
 125   $encode=fixcharset($charset);
 126   $encodefile=SM_PATH . 'functions/encode/' . $encode . '.php';
 127   if (file_exists($encodefile)) {
 128       include_once($encodefile);
 129       $ret = call_user_func('charset_encode_'.$encode, $string);
 130   } else {
 131       include_once(SM_PATH . 'functions/encode/us_ascii.php');
 132       $ret = charset_encode_us_ascii($string);
 133   }
 134   return( $ret );
 135 }
 136
 137 /**
 138  * Combined decoding and encoding functions
 139  *
 140  * If conversion is done to charset different that utf-8, unsupported symbols
 141  * will be replaced with question marks.
 142  * @param string $in_charset initial charset
 143  * @param string $string string that has to be converted
 144  * @param string $out_charset final charset
 145  * @param boolean $htmlencode keep htmlspecialchars encoding
 146  * @return string converted string
 147  */
 148 function charset_convert($in_charset,$string,$out_charset,$htmlencode=true) {
 149     $string=charset_decode($in_charset,$string);
 150     $string=charset_encode($string,$out_charset,$htmlencode);
 151     return $string;
 152 }
 153
 154 /**
 155  * Makes charset name suitable for decoding cycles
 156  *
 157  * @param string $charset Name of charset
 158  * @return string $charset Adjusted name of charset
 159  */
 160 function fixcharset($charset) {
 161     // minus removed from function names
 162     $charset=str_replace('-','_',$charset);
 163
 164     // windows-125x and cp125x charsets
 165     $charset=str_replace('windows_','cp',$charset);
 166
 167     // ibm > cp
 168     $charset=str_replace('ibm','cp',$charset);
 169
 170     // iso-8859-8-i -> iso-8859-8
 171     // use same cycle until I'll find differences
 172     $charset=str_replace('iso_8859_8_i','iso_8859_8',$charset);
 173
 174     return $charset;
 175 }
 176
 177 /**
 178  * Set up the language to be output
 179  * if $do_search is true, then scan the browser information
 180  * for a possible language that we know
 181  *
 182  * Function sets system locale environment (LC_ALL, LANG, LANGUAGE),
 183  * gettext translation bindings and html header information.
 184  *
 185  * Function returns error codes, if there is some fatal error.
 186  *  0 = no error,
 187  *  1 = mbstring support is not present,
 188  *  2 = mbstring support is not present, user's translation reverted to en_US.
 189  *
 190  * @param string $sm_language translation used by user's interface
 191  * @param bool $do_search use browser's preferred language detection functions. Defaults to false.
 192  * @param bool $default set $sm_language to $squirrelmail_default_language if language detection fails or language is not set. Defaults to false.
 193  * @return int function execution error codes.
 194  */
 195 function set_up_language($sm_language, $do_search = false, $default = false) {
 196
 197     static $SetupAlready = 0;
 198     global $use_gettext, $languages,
 199            $squirrelmail_language, $squirrelmail_default_language, $default_charset,
 200            $sm_notAlias, $username, $data_dir;
 201
 202     if ($SetupAlready) {
 203         return;
 204     }
 205
 206     $SetupAlready = TRUE;
 207     sqgetGlobalVar('HTTP_ACCEPT_LANGUAGE',  $accept_lang, SQ_SERVER);
 208
 209     if ($do_search && ! $sm_language && isset($accept_lang)) {
 210         $sm_language = substr($accept_lang, 0, 2);
 211     }
 212
 213     if ((!$sm_language||$default) && isset($squirrelmail_default_language)) {
 214         $squirrelmail_language = $squirrelmail_default_language;
 215         $sm_language = $squirrelmail_default_language;
 216     }
 217     $sm_notAlias = $sm_language;
 218
 219     // Catching removed translation
 220     // System reverts to English translation if user prefs contain translation
 221     // that is not available in $languages array
 222     if (!isset($languages[$sm_notAlias])) {
 223       $sm_notAlias="en_US";
 224     }
 225
 226     while (isset($languages[$sm_notAlias]['ALIAS'])) {
 227         $sm_notAlias = $languages[$sm_notAlias]['ALIAS'];
 228     }
 229
 230     if ( isset($sm_language) &&
 231          $use_gettext &&
 232          $sm_language != '' &&
 233          isset($languages[$sm_notAlias]['CHARSET']) ) {
 234         bindtextdomain( 'squirrelmail', SM_PATH . 'locale/' );
 235         textdomain( 'squirrelmail' );
 236         if (function_exists('bind_textdomain_codeset')) {
 237           if ($sm_notAlias == 'ja_JP') {
 238             bind_textdomain_codeset ("squirrelmail", 'EUC-JP');
 239             } else {
 240               bind_textdomain_codeset ("squirrelmail", $languages[$sm_notAlias]['CHARSET'] );
 241             }
 242         }
 243         if (isset($languages[$sm_notAlias]['LOCALE'])){
 244           $longlocale=$languages[$sm_notAlias]['LOCALE'];
 245         } else {
 246           $longlocale=$sm_notAlias;
 247         }
 248         if ( !ini_get('safe_mode') &&
 249              getenv( 'LC_ALL' ) != $longlocale ) {
 250             putenv( "LC_ALL=$longlocale" );
 251             putenv( "LANG=$longlocale" );
 252             putenv( "LANGUAGE=$longlocale" );
 253         }
 254         setlocale(LC_ALL, $longlocale);
 255
 256         // Set text direction/alignment variables
 257         if (isset($languages[$sm_notAlias]['DIR']) &&
 258             $languages[$sm_notAlias]['DIR'] == 'rtl') {
 259           /**
 260            * Text direction
 261            * @global string $text_direction
 262            */
 263           $text_direction='rtl';
 264           /**
 265            * Left alignment
 266            * @global string $left_align
 267            */
 268           $left_align='right';
 269           /**
 270            * Right alignment
 271            * @global string $right_align
 272            */
 273           $right_align='left';
 274         } else {
 275           $text_direction='ltr';
 276           $left_align='left';
 277           $right_align='right';
 278         }
 279
 280         $squirrelmail_language = $sm_notAlias;
 281         if ($squirrelmail_language == 'ja_JP') {
 282             header ('Content-Type: text/html; charset=EUC-JP');
 283             if (!function_exists('mb_internal_encoding')) {
 284               // Error messages can't be displayed here
 285               $error = 1;
 286               // Revert to English if possible.
 287               if (function_exists('setPref')  && $username!='' && $data_dir!="") {
 288                 setPref($data_dir, $username, 'language', "en_US");
 289                 $error = 2;
 290               }
 291               // stop further execution in order not to get php errors on mb_internal_encoding().
 292               return $error;
 293             }
 294             if (function_exists('mb_language')) {
 295                 mb_language('Japanese');
 296             }
 297             mb_internal_encoding('EUC-JP');
 298             mb_http_output('pass');
 299         } elseif ($squirrelmail_language == 'en_US') {
 300             header( 'Content-Type: text/html; charset=' . $default_charset );
 301         } else {
 302             header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] );
 303         }
 304     }
 305     return 0;
 306 }
 307
 308 /**
 309  * Sets default_charset variable according to the one that is used by user's translations.
 310  *
 311  * Function changes global $default_charset variable in order to be sure, that it
 312  * contains charset used by user's translation. Sanity of $squirrelmail_default_language
 313  * and $default_charset combination provided in SquirrelMail config is also tested.
 314  *
 315  * There can be a $default_charset setting in the
 316  * config.php file, but the user may have a different language
 317  * selected for a user interface. This function checks the
 318  * language selected by the user and tags the outgoing messages
 319  * with the appropriate charset corresponding to the language
 320  * selection. This is "more right" (tm), than just stamping the
 321  * message blindly with the system-wide $default_charset.
 322  */
 323 function set_my_charset(){
 324     global $data_dir, $username, $default_charset, $languages, $squirrelmail_default_language;
 325
 326     $my_language = getPref($data_dir, $username, 'language');
 327     if (!$my_language) {
 328         $my_language = $squirrelmail_default_language ;
 329     }
 330     // Catch removed translation
 331     if (!isset($languages[$my_language])) {
 332       $my_language="en_US";
 333     }
 334     while (isset($languages[$my_language]['ALIAS'])) {
 335         $my_language = $languages[$my_language]['ALIAS'];
 336     }
 337     $my_charset = $languages[$my_language]['CHARSET'];
 338     if ($my_language!='en_US') {
 339         $default_charset = $my_charset;
 340     }
 341 }
 342
 343 /* ------------------------------ main --------------------------- */
 344
 345 global $squirrelmail_language, $languages, $use_gettext;
 346
 347 if (! isset($squirrelmail_language)) {
 348     $squirrelmail_language = '';
 349 }
 350
 351 /**
 352  * Array specifies the available translations.
 353  *
 354  * Structure of array:
 355  * $languages['language']['variable'] = 'value'
 356  *
 357  * Possible 'variable' names:
 358  *  NAME      - Translation name in English
 359  *  CHARSET   - Encoding used by translation
 360  *  ALIAS     - used when 'language' is only short name and 'value' should provide long language name
 361  *  ALTNAME   - Native translation name. Any 8bit symbols must be html encoded.
 362  *  LOCALE    - Full locale name (in xx_XX.charset format)
 363  *  DIR       - Text direction. Used to define Right-to-Left languages. Possible values 'rtl' or 'ltr'. If undefined - defaults to 'ltr'
 364  *  XTRA_CODE - translation uses special functions. See doc/i18n.txt
 365  *
 366  * Each 'language' definition requires NAME+CHARSET or ALIAS variables.
 367  *
 368  * @name $languages
 369  * @global array $languages
 370  */
 371 $languages['bg_BG']['NAME']    = 'Bulgarian';
 372 $languages['bg_BG']['ALTNAME'] = '&#1041;&#1098;&#1083;&#1075;&#1072;&#1088;&#1089;&#1082;&#1080;';
 373 $languages['bg_BG']['CHARSET'] = 'windows-1251';
 374 $languages['bg_BG']['LOCALE']  = 'bg_BG.CP1251';
 375 $languages['bg']['ALIAS'] = 'bg_BG';
 376
 377 $languages['ca_ES']['NAME']    = 'Catalan';
 378 $languages['ca_ES']['CHARSET'] = 'iso-8859-1';
 379 $languages['ca_ES']['LOCALE']  = 'ca_ES.ISO8859-1';
 380 $languages['ca']['ALIAS'] = 'ca_ES';
 381
 382 $languages['cs_CZ']['NAME']    = 'Czech';
 383 $languages['cs_CZ']['ALTNAME'] = '&#268;e&scaron;tina';
 384 $languages['cs_CZ']['CHARSET'] = 'iso-8859-2';
 385 $languages['cs_CZ']['LOCALE']  = 'cs_CZ.ISO8859-2';
 386 $languages['cs']['ALIAS']      = 'cs_CZ';
 387
 388 $languages['cy_GB']['NAME']    = 'Welsh';
 389 $languages['cy_GB']['ALTNAME'] = 'Cymraeg';
 390 $languages['cy_GB']['CHARSET'] = 'iso-8859-1';
 391 $languages['cy_GB']['LOCALE']  = 'cy_GB.ISO8859-1';
 392 $languages['cy']['ALIAS'] = 'cy_GB';
 393
 394 // Danish locale is da_DK.
 395 $languages['da_DK']['NAME']    = 'Danish';
 396 $languages['da_DK']['ALTNAME'] = 'Dansk';
 397 $languages['da_DK']['CHARSET'] = 'iso-8859-1';
 398 $languages['da_DK']['LOCALE']  = 'da_DK.ISO8859-1';
 399 $languages['da']['ALIAS'] = 'da_DK';
 400
 401 $languages['de_DE']['NAME']    = 'German';
 402 $languages['de_DE']['ALTNAME']    = 'Deutsch';
 403 $languages['de_DE']['CHARSET'] = 'iso-8859-1';
 404 $languages['de_DE']['LOCALE']  = 'de_DE.ISO8859-1';
 405 $languages['de']['ALIAS'] = 'de_DE';
 406
 407 $languages['el_GR']['NAME']    = 'Greek';
 408 $languages['el_GR']['ALTNAME'] = '&Epsilon;&lambda;&lambda;&eta;&nu;&iota;&kappa;&#940;';
 409 $languages['el_GR']['CHARSET'] = 'iso-8859-7';
 410 $languages['el_GR']['LOCALE']  = 'el_GR.ISO8859-7';
 411 $languages['el']['ALIAS'] = 'el_GR';
 412
 413 $languages['en_GB']['NAME']    = 'British';
 414 $languages['en_GB']['CHARSET'] = 'iso-8859-15';
 415 $languages['en_GB']['LOCALE']  = 'en_GB.ISO8859-15';
 416
 417 $languages['en_US']['NAME']    = 'English';
 418 $languages['en_US']['CHARSET'] = 'iso-8859-1';
 419 $languages['en_US']['LOCALE']  = 'en_US.ISO8859-1';
 420 $languages['en']['ALIAS'] = 'en_US';
 421
 422 $languages['es_ES']['NAME']    = 'Spanish';
 423 $languages['es_ES']['ALTNAME'] = 'Espa&ntilde;ol';
 424 $languages['es_ES']['CHARSET'] = 'iso-8859-1';
 425 $languages['es_ES']['LOCALE']  = 'es_ES.ISO8859-1';
 426 $languages['es']['ALIAS'] = 'es_ES';
 427
 428 $languages['et_EE']['NAME']    = 'Estonian';
 429 $languages['et_EE']['CHARSET'] = 'iso-8859-15';
 430 $languages['et_EE']['LOCALE']  = 'et_EE.ISO8859-15';
 431 $languages['et']['ALIAS'] = 'et_EE';
 432
 433 $languages['eu_ES']['NAME']    = 'Basque';
 434 $languages['eu_ES']['CHARSET'] = 'iso-8859-1';
 435 $languages['eu_ES']['LOCALE']  = 'eu_ES.ISO8859-1';
 436 $languages['eu']['ALIAS'] = 'eu_ES';
 437
 438 $languages['fo_FO']['NAME']    = 'Faroese';
 439 $languages['fo_FO']['CHARSET'] = 'iso-8859-1';
 440 $languages['fo_FO']['LOCALE']  = 'fo_FO.ISO8859-1';
 441 $languages['fo']['ALIAS'] = 'fo_FO';
 442
 443 $languages['fi_FI']['NAME']    = 'Finnish';
 444 $languages['fi_FI']['ALTNAME'] = 'Suomi';
 445 $languages['fi_FI']['CHARSET'] = 'iso-8859-1';
 446 $languages['fi_FI']['LOCALE']  = 'fi_FI.ISO8859-1';
 447 $languages['fi']['ALIAS'] = 'fi_FI';
 448
 449 $languages['fr_FR']['NAME']    = 'French';
 450 $languages['fr_FR']['ALTNAME'] = 'Fran&#231;ais';
 451 $languages['fr_FR']['CHARSET'] = 'iso-8859-1';
 452 $languages['fr_FR']['LOCALE']  = 'fr_FR.ISO8859-1';
 453 $languages['fr']['ALIAS'] = 'fr_FR';
 454
 455 $languages['hr_HR']['NAME']    = 'Croatian';
 456 $languages['hr_HR']['CHARSET'] = 'iso-8859-2';
 457 $languages['hr_HR']['LOCALE']  = 'hr_HR.ISO8859-2';
 458 $languages['hr']['ALIAS'] = 'hr_HR';
 459
 460 $languages['hu_HU']['NAME']    = 'Hungarian';
 461 $languages['hu_HU']['ALTNAME'] = 'Magyar';
 462 $languages['hu_HU']['CHARSET'] = 'iso-8859-2';
 463 $languages['hu_HU']['LOCALE']  = 'hu_HU.ISO8859-2';
 464 $languages['hu']['ALIAS'] = 'hu_HU';
 465
 466 $languages['id_ID']['NAME']    = 'Indonesian';
 467 $languages['id_ID']['ALTNAME'] = 'Bahasa Indonesia';
 468 $languages['id_ID']['CHARSET'] = 'iso-8859-1';
 469 $languages['id_ID']['LOCALE']  = 'id_ID.ISO8859-1';
 470 $languages['id']['ALIAS'] = 'id_ID';
 471
 472 $languages['is_IS']['NAME']    = 'Icelandic';
 473 $languages['is_IS']['ALTNAME'] = '&Iacute;slenska';
 474 $languages['is_IS']['CHARSET'] = 'iso-8859-1';
 475 $languages['is_IS']['LOCALE']  = 'is_IS.ISO8859-1';
 476 $languages['is']['ALIAS'] = 'is_IS';
 477
 478 $languages['it_IT']['NAME']    = 'Italian';
 479 $languages['it_IT']['CHARSET'] = 'iso-8859-1';
 480 $languages['it_IT']['LOCALE']  = 'it_IT.ISO8859-1';
 481 $languages['it']['ALIAS'] = 'it_IT';
 482
 483 $languages['ja_JP']['NAME']    = 'Japanese';
 484 $languages['ja_JP']['ALTNAME'] = '&#26085;&#26412;&#35486;';
 485 $languages['ja_JP']['CHARSET'] = 'iso-2022-jp';
 486 $languages['ja_JP']['LOCALE'] = 'ja_JP.EUC-JP';
 487 $languages['ja_JP']['XTRA_CODE'] = 'japanese_xtra';
 488 $languages['ja']['ALIAS'] = 'ja_JP';
 489
 490 $languages['ko_KR']['NAME']    = 'Korean';
 491 $languages['ko_KR']['CHARSET'] = 'euc-KR';
 492 $languages['ko_KR']['LOCALE']  = 'ko_KR.EUC-KR';
 493 $languages['ko_KR']['XTRA_CODE'] = 'korean_xtra';
 494 $languages['ko']['ALIAS'] = 'ko_KR';
 495
 496 $languages['lt_LT']['NAME']    = 'Lithuanian';
 497 $languages['lt_LT']['ALTNAME'] = 'Lietuvi&#371;';
 498 $languages['lt_LT']['CHARSET'] = 'utf-8';
 499 $languages['lt_LT']['LOCALE'] = 'lt_LT.UTF-8';
 500 $languages['lt']['ALIAS'] = 'lt_LT';
 501
 502 $languages['nl_NL']['NAME']    = 'Dutch';
 503 $languages['nl_NL']['ALTNAME'] = 'Nederlands';
 504 $languages['nl_NL']['CHARSET'] = 'iso-8859-1';
 505 $languages['nl_NL']['LOCALE']  = 'nl_NL.ISO8859-1';
 506 $languages['nl']['ALIAS'] = 'nl_NL';
 507
 508 $languages['ms_MY']['NAME']    = 'Malay';
 509 $languages['ms_MY']['ALTNAME'] = 'Bahasa Melayu';
 510 $languages['ms_MY']['CHARSET'] = 'iso-8859-1';
 511 $languages['ms_MY']['LOCALE']  = 'ms_MY.ISO8859-1';
 512 $languages['my']['ALIAS'] = 'ms_MY';
 513
 514 $languages['nb_NO']['NAME']    = 'Norwegian (Bokm&aring;l)';
 515 $languages['nb_NO']['ALTNAME'] = 'Norsk (Bokm&aring;l)';
 516 $languages['nb_NO']['CHARSET'] = 'iso-8859-1';
 517 $languages['nb_NO']['LOCALE']  = 'nb_NO.ISO8859-1';
 518 $languages['nb']['ALIAS'] = 'nb_NO';
 519
 520 $languages['nn_NO']['NAME']    = 'Norwegian (Nynorsk)';
 521 $languages['nn_NO']['ALTNAME'] = 'Norsk (Nynorsk)';
 522 $languages['nn_NO']['CHARSET'] = 'iso-8859-1';
 523 $languages['nn_NO']['LOCALE']  = 'nn_NO.ISO8859-1';
 524
 525 $languages['pl_PL']['NAME']    = 'Polish';
 526 $languages['pl_PL']['ALTNAME'] = 'Polski';
 527 $languages['pl_PL']['CHARSET'] = 'iso-8859-2';
 528 $languages['pl_PL']['LOCALE']  = 'pl_PL.ISO8859-2';
 529 $languages['pl']['ALIAS'] = 'pl_PL';
 530
 531 $languages['pt_PT']['NAME'] = 'Portuguese (Portugal)';
 532 $languages['pt_PT']['CHARSET'] = 'iso-8859-1';
 533 $languages['pt_PT']['LOCALE']  = 'pt_PT.ISO8859-1';
 534 $languages['pt']['ALIAS'] = 'pt_PT';
 535
 536 $languages['pt_BR']['NAME']    = 'Portuguese (Brazil)';
 537 $languages['pt_BR']['ALTNAME'] = 'Portugu&ecirc;s do Brasil';
 538 $languages['pt_BR']['CHARSET'] = 'iso-8859-1';
 539 $languages['pt_BR']['LOCALE']  = 'pt_BR.ISO8859-1';
 540
 541 $languages['ro_RO']['NAME']    = 'Romanian';
 542 $languages['ro_RO']['ALTNAME'] = 'Rom&acirc;n&#259;';
 543 $languages['ro_RO']['CHARSET'] = 'iso-8859-2';
 544 $languages['ro_RO']['LOCALE']  = 'ro_RO.ISO8859-2';
 545 $languages['ro']['ALIAS'] = 'ro_RO';
 546
 547 $languages['ru_RU']['NAME']    = 'Russian';
 548 $languages['ru_RU']['ALTNAME'] = '&#1056;&#1091;&#1089;&#1089;&#1082;&#1080;&#1081;';
 549 $languages['ru_RU']['CHARSET'] = 'utf-8';
 550 $languages['ru_RU']['LOCALE']  = 'ru_RU.UTF-8';
 551 $languages['ru']['ALIAS'] = 'ru_RU';
 552
 553 $languages['sk_SK']['NAME']    = 'Slovak';
 554 $languages['sk_SK']['CHARSET'] = 'iso-8859-2';
 555 $languages['sk_SK']['LOCALE']  = 'sk_SK.ISO8859-2';
 556 $languages['sk']['ALIAS'] = 'sk_SK';
 557
 558 $languages['sl_SI']['NAME']    = 'Slovenian';
 559 $languages['sl_SI']['ALTNAME'] = 'Sloven&scaron;&#269;ina';
 560 $languages['sl_SI']['CHARSET'] = 'iso-8859-2';
 561 $languages['sl_SI']['LOCALE']  = 'sl_SI.ISO8859-2';
 562 $languages['sl']['ALIAS'] = 'sl_SI';
 563
 564 $languages['sr_YU']['NAME']    = 'Serbian';
 565 $languages['sr_YU']['ALTNAME'] = 'Srpski';
 566 $languages['sr_YU']['CHARSET'] = 'iso-8859-2';
 567 $languages['sr_YU']['LOCALE']  = 'sr_YU.ISO8859-2';
 568 $languages['sr']['ALIAS'] = 'sr_YU';
 569
 570 $languages['sv_SE']['NAME']    = 'Swedish';
 571 $languages['sv_SE']['ALTNAME'] = 'Svenska';
 572 $languages['sv_SE']['CHARSET'] = 'iso-8859-1';
 573 $languages['sv_SE']['LOCALE']  = 'sv_SE.ISO8859-1';
 574 $languages['sv']['ALIAS'] = 'sv_SE';
 575
 576 $languages['th_TH']['NAME']    = 'Thai';
 577 $languages['th_TH']['CHARSET'] = 'tis-620';
 578 $languages['th_TH']['LOCALE']  = 'th_TH.TIS-620';
 579 $languages['th']['ALIAS'] = 'th_TH';
 580
 581 $languages['tl_PH']['NAME']    = 'Tagalog';
 582 $languages['tl_PH']['CHARSET'] = 'iso-8859-1';
 583 $languages['tl_PH']['LOCALE']  = 'tl_PH.ISO8859-1';
 584 $languages['tl']['ALIAS'] = 'tl_PH';
 585
 586 $languages['tr_TR']['NAME']    = 'Turkish';
 587 $languages['tr_TR']['CHARSET'] = 'iso-8859-9';
 588 $languages['tr_TR']['LOCALE']  = 'tr_TR.ISO8859-9';
 589 $languages['tr']['ALIAS'] = 'tr_TR';
 590
 591 $languages['zh_TW']['NAME']    = 'Chinese Trad';
 592 $languages['zh_TW']['CHARSET'] = 'big5';
 593 $languages['zh_TW']['LOCALE']  = 'zh_TW.BIG5';
 594 $languages['tw']['ALIAS'] = 'zh_TW';
 595
 596 $languages['zh_CN']['NAME']    = 'Chinese Simp';
 597 $languages['zh_CN']['CHARSET'] = 'gb2312';
 598 $languages['zh_CN']['LOCALE']  = 'zh_CN.GB2312';
 599 $languages['cn']['ALIAS'] = 'zh_CN';
 600
 601 $languages['uk_UA']['NAME']    = 'Ukrainian';
 602 $languages['uk_UA']['CHARSET'] = 'koi8-u';
 603 $languages['uk_UA']['LOCALE']  = 'uk_UA.KOI8-U';
 604 $languages['uk']['ALIAS'] = 'uk_UA';
 605
 606 $languages['ru_UA']['NAME']    = 'Russian (Ukrainian)';
 607 $languages['ru_UA']['CHARSET'] = 'koi8-r';
 608 $languages['ru_UA']['LOCALE']  = 'ru_UA.KOI8-R';
 609
 610 /*
 611 $languages['vi_VN']['NAME']    = 'Vietnamese';
 612 $languages['vi_VN']['CHARSET'] = 'utf-8';
 613 $languages['vi']['ALIAS'] = 'vi_VN';
 614 */
 615
 616 // Right to left languages
 617 $languages['ar']['NAME']    = 'Arabic';
 618 $languages['ar']['CHARSET'] = 'windows-1256';
 619 $languages['ar']['DIR']     = 'rtl';
 620
 621 $languages['fa_IR']['NAME']    = 'Farsi';
 622 $languages['fa_IR']['CHARSET'] = 'utf-8';
 623 $languages['fa_IR']['DIR']     = 'rtl';
 624 $languages['fa_IR']['LOCALE']  = 'fa_IR.UTF-8';
 625 $languages['fa']['ALIAS']      = 'fa_IR';
 626
 627 $languages['he_IL']['NAME']    = 'Hebrew';
 628 $languages['he_IL']['CHARSET'] = 'windows-1255';
 629 $languages['he_IL']['LOCALE']  = 'he_IL.CP1255';
 630 $languages['he_IL']['DIR']     = 'rtl';
 631 $languages['he']['ALIAS']      = 'he_IL';
 632
 633 $languages['ug']['NAME']    = 'Uighur';
 634 $languages['ug']['CHARSET'] = 'utf-8';
 635 $languages['ug']['DIR']     = 'rtl';
 636
 637 /* Detect whether gettext is installed. */
 638 $gettext_flags = 0;
 639 if (function_exists('_')) {
 640     $gettext_flags += 1;
 641 }
 642 if (function_exists('bindtextdomain')) {
 643     $gettext_flags += 2;
 644 }
 645 if (function_exists('textdomain')) {
 646     $gettext_flags += 4;
 647 }
 648
 649 /* If gettext is fully loaded, cool */
 650 if ($gettext_flags == 7) {
 651     $use_gettext = true;
 652 }
 653 /* If we can fake gettext, try that */
 654 elseif ($gettext_flags == 0) {
 655     $use_gettext = true;
 656     include_once(SM_PATH . 'functions/gettext.php');
 657 } else {
 658     /* Uh-ho.  A weird install */
 659     if (! $gettext_flags & 1) {
 660       /**
 661        * Function is used as replacement in broken installs
 662        * @ignore
 663        */
 664         function _($str) {
 665             return $str;
 666         }
 667     }
 668     if (! $gettext_flags & 2) {
 669       /**
 670        * Function is used as replacement in broken installs
 671        * @ignore
 672        */
 673         function bindtextdomain() {
 674             return;
 675         }
 676     }
 677     if (! $gettext_flags & 4) {
 678       /**
 679        * Function is used as replacemet in broken installs
 680        * @ignore
 681        */
 682         function textdomain() {
 683             return;
 684         }
 685     }
 686 }
 687
 688
 689 /**
 690  * Japanese charset extra function
 691  *
 692  * Action performed by function is defined by first argument.
 693  * Default return value is defined by second argument.
 694  * Use of third argument depends on action.
 695  *
 696  * @param string $action action performed by this function.
 697  *    possible values:
 698  *  decode - convert returned string to euc-jp. third argument unused
 699  *  encode - convert returned string to jis. third argument unused
 700  *  strimwidth - third argument=$width. trims string to $width symbols.
 701  *  encodeheader - create base64 encoded header in iso-2022-jp. third argument unused
 702  *  decodeheader - return human readable string from mime header. string is returned in euc-jp. third argument unused
 703  *  downloadfilename - third argument $useragent. Arguments provide browser info. Returns shift-jis or euc-jp encoded file name
 704  *  wordwrap - third argument=$wrap. wraps text at $wrap symbols
 705  *  utf7-imap_encode - returns string converted from euc-jp to utf7-imap. third argument unused
 706  *  utf7-imap_decode - returns string converted from utf7-imap to euc-jp. third argument unused
 707  * @param string $ret default return value
 708  */
 709 function japanese_xtra() {
 710     $ret = func_get_arg(1);  /* default return value */
 711     if (function_exists('mb_detect_encoding')) {
 712         switch (func_get_arg(0)) { /* action */
 713         case 'decode':
 714             $detect_encoding = @mb_detect_encoding($ret);
 715             if ($detect_encoding == 'JIS' ||
 716                 $detect_encoding == 'EUC-JP' ||
 717                 $detect_encoding == 'SJIS' ||
 718                 $detect_encoding == 'UTF-8') {
 719
 720                 $ret = mb_convert_kana(mb_convert_encoding($ret, 'EUC-JP', 'AUTO'), "KV");
 721             }
 722             break;
 723         case 'encode':
 724             $detect_encoding = @mb_detect_encoding($ret);
 725             if ($detect_encoding == 'JIS' ||
 726                 $detect_encoding == 'EUC-JP' ||
 727                 $detect_encoding == 'SJIS' ||
 728                 $detect_encoding == 'UTF-8') {
 729
 730                 $ret = mb_convert_encoding(mb_convert_kana($ret, "KV"), 'JIS', 'AUTO');
 731             }
 732             break;
 733         case 'strimwidth':
 734             $width = func_get_arg(2);
 735             $ret = mb_strimwidth($ret, 0, $width, '...');
 736             break;
 737         case 'encodeheader':
 738             $result = '';
 739             if (strlen($ret) > 0) {
 740                 $tmpstr = mb_substr($ret, 0, 1);
 741                 $prevcsize = strlen($tmpstr);
 742                 for ($i = 1; $i < mb_strlen($ret); $i++) {
 743                     $tmp = mb_substr($ret, $i, 1);
 744                     if (strlen($tmp) == $prevcsize) {
 745                         $tmpstr .= $tmp;
 746                     } else {
 747                         if ($prevcsize == 1) {
 748                             $result .= $tmpstr;
 749                         } else {
 750                             $result .= str_replace(' ', '',
 751                                                    mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
 752                         }
 753                         $tmpstr = $tmp;
 754                         $prevcsize = strlen($tmp);
 755                     }
 756                 }
 757                 if (strlen($tmpstr)) {
 758                     if (strlen(mb_substr($tmpstr, 0, 1)) == 1)
 759                         $result .= $tmpstr;
 760                     else
 761                         $result .= str_replace(' ', '',
 762                                                mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
 763                 }
 764             }
 765             $ret = $result;
 766             break;
 767         case 'decodeheader':
 768             $ret = str_replace("\t", "", $ret);
 769             if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $ret))
 770                 $ret = @mb_decode_mimeheader($ret);
 771             $ret = @mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
 772             break;
 773         case 'downloadfilename':
 774             $useragent = func_get_arg(2);
 775             if (strstr($useragent, 'Windows') !== false ||
 776                 strstr($useragent, 'Mac_') !== false) {
 777                 $ret = mb_convert_encoding($ret, 'SJIS', 'AUTO');
 778             } else {
 779                 $ret = mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
 780 }
 781             break;
 782         case 'wordwrap':
 783             $no_begin = "\x21\x25\x29\x2c\x2e\x3a\x3b\x3f\x5d\x7d\xa1\xf1\xa1\xeb\xa1" .
 784                 "\xc7\xa1\xc9\xa2\xf3\xa1\xec\xa1\xed\xa1\xee\xa1\xa2\xa1\xa3\xa1\xb9" .
 785                 "\xa1\xd3\xa1\xd5\xa1\xd7\xa1\xd9\xa1\xdb\xa1\xcd\xa4\xa1\xa4\xa3\xa4" .
 786                 "\xa5\xa4\xa7\xa4\xa9\xa4\xc3\xa4\xe3\xa4\xe5\xa4\xe7\xa4\xee\xa1\xab" .
 787                 "\xa1\xac\xa1\xb5\xa1\xb6\xa5\xa1\xa5\xa3\xa5\xa5\xa5\xa7\xa5\xa9\xa5" .
 788                 "\xc3\xa5\xe3\xa5\xe5\xa5\xe7\xa5\xee\xa5\xf5\xa5\xf6\xa1\xa6\xa1\xbc" .
 789                 "\xa1\xb3\xa1\xb4\xa1\xaa\xa1\xf3\xa1\xcb\xa1\xa4\xa1\xa5\xa1\xa7\xa1" .
 790                 "\xa8\xa1\xa9\xa1\xcf\xa1\xd1";
 791             $no_end = "\x5c\x24\x28\x5b\x7b\xa1\xf2\x5c\xa1\xc6\xa1\xc8\xa1\xd2\xa1" .
 792                 "\xd4\xa1\xd6\xa1\xd8\xa1\xda\xa1\xcc\xa1\xf0\xa1\xca\xa1\xce\xa1\xd0\xa1\xef";
 793             $wrap = func_get_arg(2);
 794
 795             if (strlen($ret) >= $wrap &&
 796                 substr($ret, 0, 1) != '>' &&
 797                 strpos($ret, 'http://') === FALSE &&
 798                 strpos($ret, 'https://') === FALSE &&
 799                 strpos($ret, 'ftp://') === FALSE) {
 800
 801                 $ret = mb_convert_kana($ret, "KV");
 802
 803                 $line_new = '';
 804                 $ptr = 0;
 805
 806                 while ($ptr < strlen($ret) - 1) {
 807                     $l = mb_strcut($ret, $ptr, $wrap);
 808                     $ptr += strlen($l);
 809                     $tmp = $l;
 810
 811                     $l = mb_strcut($ret, $ptr, 2);
 812                     while (strlen($l) != 0 && mb_strpos($no_begin, $l) !== FALSE ) {
 813                         $tmp .= $l;
 814                         $ptr += strlen($l);
 815                         $l = mb_strcut($ret, $ptr, 1);
 816                     }
 817                     $line_new .= $tmp;
 818                     if ($ptr < strlen($ret) - 1)
 819                         $line_new .= "\n";
 820                 }
 821                 $ret = $line_new;
 822             }
 823             break;
 824         case 'utf7-imap_encode':
 825             $ret = mb_convert_encoding($ret, 'UTF7-IMAP', 'EUC-JP');
 826             break;
 827         case 'utf7-imap_decode':
 828             $ret = mb_convert_encoding($ret, 'EUC-JP', 'UTF7-IMAP');
 829             break;
 830         }
 831     }
 832     return $ret;
 833 }
 834
 835 /**************************
 836  * Japanese extra functions
 837  **************************/
 838
 839 /**
 840  * Japanese decoding function
 841  *
 842  * converts string to euc-jp, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
 843  * charset. Needs mbstring support in php.
 844  * @param string $ret text, that has to be converted
 845  * @return string converted string
 846  * @since 1.5.1
 847  */
 848 function japanese_xtra_decode($ret) {
 849     if (function_exists('mb_detect_encoding')) {
 850         $detect_encoding = @mb_detect_encoding($ret);
 851         if ($detect_encoding == 'JIS' ||
 852             $detect_encoding == 'EUC-JP' ||
 853             $detect_encoding == 'SJIS' ||
 854             $detect_encoding == 'UTF-8') {
 855
 856             $ret = mb_convert_kana(mb_convert_encoding($ret, 'EUC-JP', 'AUTO'), "KV");
 857         }
 858     }
 859     return $ret;
 860 }
 861
 862 /**
 863  * Japanese encoding function
 864  *
 865  * converts string to jis, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
 866  * charset. Needs mbstring support in php.
 867  * @param string $ret text, that has to be converted
 868  * @return string converted text
 869  * @since 1.5.1
 870  */
 871 function japanese_xtra_encode($ret) {
 872     if (function_exists('mb_detect_encoding')) {
 873         $detect_encoding = @mb_detect_encoding($ret);
 874         if ($detect_encoding == 'JIS' ||
 875             $detect_encoding == 'EUC-JP' ||
 876             $detect_encoding == 'SJIS' ||
 877             $detect_encoding == 'UTF-8') {
 878
 879             $ret = mb_convert_encoding(mb_convert_kana($ret, "KV"), 'JIS', 'AUTO');
 880         }
 881     }
 882     return $ret;
 883 }
 884
 885 /**
 886  * Japanese header encoding function
 887  *
 888  * creates base64 encoded header in iso-2022-jp charset
 889  * @param string $ret text, that has to be converted
 890  * @return string mime base64 encoded string
 891  * @since 1.5.1
 892  */
 893 function japanese_xtra_encodeheader($ret) {
 894     if (function_exists('mb_detect_encoding')) {
 895         $result = '';
 896         if (strlen($ret) > 0) {
 897             $tmpstr = mb_substr($ret, 0, 1);
 898             $prevcsize = strlen($tmpstr);
 899             for ($i = 1; $i < mb_strlen($ret); $i++) {
 900                 $tmp = mb_substr($ret, $i, 1);
 901                 if (strlen($tmp) == $prevcsize) {
 902                     $tmpstr .= $tmp;
 903                 } else {
 904                     if ($prevcsize == 1) {
 905                         $result .= $tmpstr;
 906                     } else {
 907                         $result .= str_replace(' ', '',
 908                                                mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
 909                     }
 910                     $tmpstr = $tmp;
 911                     $prevcsize = strlen($tmp);
 912                 }
 913             }
 914             if (strlen($tmpstr)) {
 915                 if (strlen(mb_substr($tmpstr, 0, 1)) == 1)
 916                     $result .= $tmpstr;
 917                 else
 918                     $result .= str_replace(' ', '',
 919                                            mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
 920             }
 921         }
 922         $ret = $result;
 923     }
 924     return $ret;
 925 }
 926
 927 /**
 928  * Japanese header decoding function
 929  *
 930  * return human readable string from mime header. string is returned in euc-jp
 931  * charset.
 932  * @param string $ret header string
 933  * @return string decoded header string
 934  * @since 1.5.1
 935  */
 936 function japanese_xtra_decodeheader($ret) {
 937     if (function_exists('mb_detect_encoding')) {
 938         $ret = str_replace("\t", "", $ret);
 939         if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $ret))
 940             $ret = @mb_decode_mimeheader($ret);
 941         $ret = @mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
 942     }
 943     return $ret;
 944 }
 945
 946 /**
 947  * Japanese downloaded filename processing function
 948  *
 949  * Returns shift-jis or euc-jp encoded file name
 950  * @param string $ret string
 951  * @param string $useragent browser
 952  * @return string converted string
 953  * @since 1.5.1
 954  */
 955 function japanese_xtra_downloadfilename($ret,$useragent) {
 956     if (function_exists('mb_detect_encoding')) {
 957         if (strstr($useragent, 'Windows') !== false ||
 958             strstr($useragent, 'Mac_') !== false) {
 959             $ret = mb_convert_encoding($ret, 'SJIS', 'AUTO');
 960         } else {
 961             $ret = mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
 962         }
 963     }
 964     return $ret;
 965 }
 966
 967 /**
 968  * Japanese wordwrap function
 969  *
 970  * wraps text at set number of symbols
 971  * @param string $ret text
 972  * @param integer $wrap number of symbols per line
 973  * @return string wrapped text
 974  * @since 1.5.1
 975  */
 976 function japanese_xtra_wordwrap($ret,$wrap) {
 977     if (function_exists('mb_detect_encoding')) {
 978         $no_begin = "\x21\x25\x29\x2c\x2e\x3a\x3b\x3f\x5d\x7d\xa1\xf1\xa1\xeb\xa1" .
 979             "\xc7\xa1\xc9\xa2\xf3\xa1\xec\xa1\xed\xa1\xee\xa1\xa2\xa1\xa3\xa1\xb9" .
 980             "\xa1\xd3\xa1\xd5\xa1\xd7\xa1\xd9\xa1\xdb\xa1\xcd\xa4\xa1\xa4\xa3\xa4" .
 981             "\xa5\xa4\xa7\xa4\xa9\xa4\xc3\xa4\xe3\xa4\xe5\xa4\xe7\xa4\xee\xa1\xab" .
 982             "\xa1\xac\xa1\xb5\xa1\xb6\xa5\xa1\xa5\xa3\xa5\xa5\xa5\xa7\xa5\xa9\xa5" .
 983             "\xc3\xa5\xe3\xa5\xe5\xa5\xe7\xa5\xee\xa5\xf5\xa5\xf6\xa1\xa6\xa1\xbc" .
 984             "\xa1\xb3\xa1\xb4\xa1\xaa\xa1\xf3\xa1\xcb\xa1\xa4\xa1\xa5\xa1\xa7\xa1" .
 985             "\xa8\xa1\xa9\xa1\xcf\xa1\xd1";
 986         $no_end = "\x5c\x24\x28\x5b\x7b\xa1\xf2\x5c\xa1\xc6\xa1\xc8\xa1\xd2\xa1" .
 987             "\xd4\xa1\xd6\xa1\xd8\xa1\xda\xa1\xcc\xa1\xf0\xa1\xca\xa1\xce\xa1\xd0\xa1\xef";
 988
 989         if (strlen($ret) >= $wrap &&
 990             substr($ret, 0, 1) != '>' &&
 991             strpos($ret, 'http://') === FALSE &&
 992             strpos($ret, 'https://') === FALSE &&
 993             strpos($ret, 'ftp://') === FALSE) {
 994
 995             $ret = mb_convert_kana($ret, "KV");
 996
 997             $line_new = '';
 998             $ptr = 0;
 999
1000             while ($ptr < strlen($ret) - 1) {
1001                 $l = mb_strcut($ret, $ptr, $wrap);
1002                 $ptr += strlen($l);
1003                 $tmp = $l;
1004
1005                 $l = mb_strcut($ret, $ptr, 2);
1006                 while (strlen($l) != 0 && mb_strpos($no_begin, $l) !== FALSE ) {
1007                     $tmp .= $l;
1008                     $ptr += strlen($l);
1009                     $l = mb_strcut($ret, $ptr, 1);
1010                 }
1011                 $line_new .= $tmp;
1012                 if ($ptr < strlen($ret) - 1)
1013                     $line_new .= "\n";
1014             }
1015             $ret = $line_new;
1016         }
1017     }
1018     return $ret;
1019 }
1020
1021 /**
1022  * Japanese imap folder name encoding function
1023  *
1024  * converts folder name from euc-jp to utf7-imap
1025  * @param string $ret folder name
1026  * @return string converted folder name
1027  * @since 1.5.1
1028  */
1029 function japanese_xtra_utf7_imap_encode($ret){
1030     if (function_exists('mb_detect_encoding')) {
1031         $ret = mb_convert_encoding($ret, 'UTF7-IMAP', 'EUC-JP');
1032     }
1033     return $ret;
1034 }
1035
1036 /**
1037  * Japanese imap folder name decoding function
1038  *
1039  * converts folder name from utf7-imap to euc-jp.
1040  * @param string $ret folder name in utf7-imap
1041  * @return string converted folder name
1042  * @since 1.5.1
1043  */
1044 function japanese_xtra_utf7_imap_decode($ret) {
1045     if (function_exists('mb_detect_encoding')) {
1046         $ret = mb_convert_encoding($ret, 'EUC-JP', 'UTF7-IMAP');
1047     }
1048     return $ret;
1049 }
1050
1051 /**
1052  * Japanese string trimming function
1053  *
1054  * trims string to defined number of symbols
1055  * @param string $ret string
1056  * @param integer $width number of symbols
1057  * @return string trimmed string
1058  * @since 1.5.1
1059  */
1060 function japanese_xtra_strimwidth($ret,$width) {
1061     if (function_exists('mb_detect_encoding')) {
1062         $ret = mb_strimwidth($ret, 0, $width, '...');
1063     }
1064     return $ret;
1065 }
1066
1067 /********************************
1068  * Korean charset extra functions
1069  ********************************/
1070
1071 /**
1072  * Korean downloaded filename processing functions
1073  *
1074  * @param string default return value
1075  * @return string
1076  */
1077 function korean_xtra_downloadfilename($ret) {
1078     $ret = str_replace("\x0D\x0A", '', $ret);  /* Hanmail's CR/LF Clear */
1079     for ($i=0;$i<strlen($ret);$i++) {
1080         if ($ret[$i] >= "\xA1" && $ret[$i] <= "\xFE") {   /* 0xA1 - 0XFE are Valid */
1081             $i++;
1082             continue;
1083         } else if (($ret[$i] >= 'a' && $ret[$i] <= 'z') || /* From Original ereg_replace in download.php */
1084                    ($ret[$i] >= 'A' && $ret[$i] <= 'Z') ||
1085                    ($ret[$i] == '.') || ($ret[$i] == '-')) {
1086             continue;
1087         } else {
1088             $ret[$i] = '_';
1089         }
1090     }
1091     return $ret;
1092 }
1093
1094 /**
1095  * Replaces non-braking spaces inserted by some browsers with regular space
1096  *
1097  * This function can be used to replace non-braking space symbols
1098  * that are inserted in forms by some browsers instead of normal
1099  * space symbol.
1100  *
1101  * @param string $string Text that needs to be cleaned
1102  * @param string $charset Charset used in text
1103  * @return string Cleaned text
1104  */
1105 function cleanup_nbsp($string,$charset) {
1106
1107   // reduce number of case statements
1108   if (stristr('iso-8859-',substr($charset,0,9))){
1109     $output_charset="iso-8859-x";
1110   }
1111   if (stristr('windows-125',substr($charset,0,11))){
1112     $output_charset="cp125x";
1113   }
1114   if (stristr('koi8',substr($charset,0,4))){
1115     $output_charset="koi8-x";
1116   }
1117   if (! isset($output_charset)){
1118     $output_charset=strtolower($charset);
1119   }
1120
1121 // where is non-braking space symbol
1122 switch($output_charset):
1123  case "iso-8859-x":
1124  case "cp125x":
1125  case "iso-2022-jp":
1126   $nbsp="\xA0";
1127   break;
1128  case "koi8-x":
1129    $nbsp="\x9A";
1130    break;
1131  case "utf-8":
1132    $nbsp="\xC2\xA0";
1133    break;
1134  default:
1135    // don't change string if charset is unmatched
1136    return $string;
1137 endswitch;
1138
1139 // return space instead of non-braking space.
1140  return str_replace($nbsp,' ',$string);
1141 }
1142
1143 /**
1144  * Function informs if it is safe to convert given charset to the one that is used by user.
1145  *
1146  * It is safe to use conversion only if user uses utf-8 encoding and when
1147  * converted charset is similar to the one that is used by user.
1148  *
1149  * @param string $input_charset Charset of text that needs to be converted
1150  * @return bool is it possible to convert to user's charset
1151  */
1152 function is_conversion_safe($input_charset) {
1153   global $languages, $sm_notAlias, $default_charset, $loosy_encoding;
1154
1155     if (isset($loosy_encoding) && $loosy_encoding )
1156         return true;
1157
1158  // convert to lower case
1159  $input_charset = strtolower($input_charset);
1160
1161  // Is user's locale Unicode based ?
1162  if ( $default_charset == "utf-8" ) {
1163    return true;
1164  }
1165
1166  // Charsets that are similar
1167 switch ($default_charset):
1168 case "windows-1251":
1169       if ( $input_charset == "iso-8859-5" ||
1170            $input_charset == "koi8-r" ||
1171            $input_charset == "koi8-u" ) {
1172         return true;
1173      } else {
1174         return false;
1175      }
1176 case "windows-1257":
1177   if ( $input_charset == "iso-8859-13" ||
1178        $input_charset == "iso-8859-4" ) {
1179     return true;
1180   } else {
1181     return false;
1182   }
1183 case "iso-8859-4":
1184   if ( $input_charset == "iso-8859-13" ||
1185        $input_charset == "windows-1257" ) {
1186      return true;
1187   } else {
1188      return false;
1189   }
1190 case "iso-8859-5":
1191   if ( $input_charset == "windows-1251" ||
1192        $input_charset == "koi8-r" ||
1193        $input_charset == "koi8-u" ) {
1194      return true;
1195   } else {
1196      return false;
1197   }
1198 case "iso-8859-13":
1199   if ( $input_charset == "iso-8859-4" ||
1200        $input_charset == "windows-1257" ) {
1201      return true;
1202   } else {
1203      return false;
1204   }
1205 case "koi8-r":
1206   if ( $input_charset == "windows-1251" ||
1207        $input_charset == "iso-8859-5" ||
1208        $input_charset == "koi8-u" ) {
1209      return true;
1210   } else {
1211      return false;
1212   }
1213 case "koi8-u":
1214   if ( $input_charset == "windows-1251" ||
1215        $input_charset == "iso-8859-5" ||
1216        $input_charset == "koi8-r" ) {
1217      return true;
1218   } else {
1219      return false;
1220   }
1221 default:
1222    return false;
1223 endswitch;
1224 }
1225 ?>