functions/i18n.php

   1 <?php
   2 /**
   3  * SquirrelMail internationalization functions
   4  *
   5  * Copyright (c) 1999-2005 The SquirrelMail Project Team
   6  * Licensed under the GNU GPL. For full terms see the file COPYING.
   7  *
   8  * This file contains variuos functions that are needed to do
   9  * internationalization of SquirrelMail.
  10  *
  11  * Internally the output character set is used. Other characters are
  12  * encoded using Unicode entities according to HTML 4.0.
  13  *
  14  * @version $Id$
  15  * @package squirrelmail
  16  * @subpackage i18n
  17  */
  18
  19 /** Everything uses global.php... */
  20 require_once(SM_PATH . 'functions/global.php');
  21
  22 /**
  23  * Gettext bindtextdomain wrapper.
  24  *
  25  * Wrapper solves differences between php versions in order to provide
  26  * ngettext support. Should be used if translation uses ngettext
  27  * functions.
  28  * @since 1.5.1
  29  * @param string $domain gettext domain name
  30  * @param string $dir directory that contains all translations
  31  * @return string path to translation directory
  32  */
  33 function sq_bindtextdomain($domain,$dir) {
  34     global $l10n, $gettext_flags, $sm_notAlias;
  35
  36     if ($gettext_flags==7) {
  37         // gettext extension without ngettext
  38         if (substr($dir, -1) != '/') $dir .= '/';
  39         $mofile=$dir . $sm_notAlias . '/LC_MESSAGES/' . $domain . '.mo';
  40         $input = new FileReader($mofile);
  41         $l10n[$domain] = new gettext_reader($input);
  42     }
  43
  44     $dir=bindtextdomain($domain,$dir);
  45
  46     return $dir;
  47 }
  48
  49 /**
  50  * Gettext textdomain wrapper.
  51  * Makes sure that gettext_domain global is modified.
  52  * @since 1.5.1
  53  * @param string $name gettext domain name
  54  * @return string gettext domain name
  55  */
  56 function sq_textdomain($domain) {
  57     global $gettext_domain;
  58     $gettext_domain=textdomain($domain);
  59     return $gettext_domain;
  60 }
  61
  62 /**
  63  * php setlocale function wrapper
  64  *
  65  * From php 4.3.0 it is possible to use arrays in order to set locale.
  66  * php gettext extension works only when locale is set. This wrapper
  67  * function allows to use more than one locale name.
  68  *
  69  * @param int $category locale category name. Use php named constants
  70  *     (LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, LC_NUMERIC, LC_TIME)
  71  * @param mixed $locale option contains array with possible locales or string with one locale
  72  * @return string name of set locale or false, if all locales fail.
  73  * @since 1.5.1
  74  * @see http://www.php.net/setlocale
  75  */
  76 function sq_setlocale($category,$locale) {
  77     // string with only one locale
  78     if (is_string($locale))
  79         return setlocale($category,$locale);
  80
  81     if (! check_php_version(4,3)) {
  82         $ret=false;
  83         $index=0;
  84         while ( ! $ret && $index<count($locale)) {
  85             $ret=setlocale($category,$locale[$index]);
  86             $index++;
  87         }
  88     } else {
  89         // php 4.3.0 or better, use entire array
  90         $ret=setlocale($category,$locale);
  91     }
  92     return $ret;
  93 }
  94
  95 /**
  96  * Converts string from given charset to charset, that can be displayed by user translation.
  97  *
  98  * Function by default returns html encoded strings, if translation uses different encoding.
  99  * If Japanese translation is used - function returns string converted to euc-jp
 100  * If iconv or recode functions are enabled and translation uses utf-8 - function returns utf-8 encoded string.
 101  * If $charset is not supported - function returns unconverted string.
 102  *
 103  * sanitizing of html tags is also done by this function.
 104  *
 105  * @param string $charset
 106  * @param string $string Text to be decoded
 107  * @return string decoded string
 108  */
 109 function charset_decode ($charset, $string) {
 110     global $languages, $squirrelmail_language, $default_charset;
 111     global $use_php_recode, $use_php_iconv, $aggressive_decoding;
 112
 113     if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
 114         function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
 115         $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode', $string);
 116     }
 117
 118     $charset = strtolower($charset);
 119
 120     set_my_charset();
 121
 122     // Variables that allow to use functions without function_exist() calls
 123     if (! isset($use_php_recode) || $use_php_recode=="" ) {
 124         $use_php_recode=false; }
 125     if (! isset($use_php_iconv) || $use_php_iconv=="" ) {
 126         $use_php_iconv=false; }
 127
 128     // Don't do conversion if charset is the same.
 129     if ( $charset == strtolower($default_charset) )
 130         return htmlspecialchars($string);
 131
 132     // catch iso-8859-8-i thing
 133     if ( $charset == "iso-8859-8-i" )
 134         $charset = "iso-8859-8";
 135
 136     /*
 137      * Recode converts html special characters automatically if you use
 138      * 'charset..html' decoding. There is no documented way to put -d option
 139      * into php recode function call.
 140      */
 141     if ( $use_php_recode ) {
 142         if ( $default_charset == "utf-8" ) {
 143             // other charsets can be converted to utf-8 without loss.
 144             // and output string is smaller
 145             $string = recode_string($charset . "..utf-8",$string);
 146             return htmlspecialchars($string);
 147         } else {
 148             $string = recode_string($charset . "..html",$string);
 149             // recode does not convert single quote, htmlspecialchars does.
 150             $string = str_replace("'", '&#039;', $string);
 151             return $string;
 152         }
 153     }
 154
 155     // iconv functions does not have html target and can be used only with utf-8
 156     if ( $use_php_iconv && $default_charset=='utf-8') {
 157         $string = iconv($charset,$default_charset,$string);
 158         return htmlspecialchars($string);
 159     }
 160
 161     // If we don't use recode and iconv, we'll do it old way.
 162
 163     /* All HTML special characters are 7 bit and can be replaced first */
 164
 165     $string = htmlspecialchars ($string);
 166
 167     /* controls cpu and memory intensive decoding cycles */
 168     if (! isset($aggressive_decoding) || $aggressive_decoding=="" ) {
 169         $aggressive_decoding=false; }
 170
 171     $decode=fixcharset($charset);
 172     $decodefile=SM_PATH . 'functions/decode/' . $decode . '.php';
 173     if (file_exists($decodefile)) {
 174         include_once($decodefile);
 175         $ret = call_user_func('charset_decode_'.$decode, $string);
 176     } else {
 177         $ret = $string;
 178     }
 179     return( $ret );
 180 }
 181
 182 /**
 183  * Converts html string to given charset
 184  * @since 1.5.1
 185  * @param string $string
 186  * @param string $charset
 187  * @param boolean $htmlencode keep htmlspecialchars encoding
 188  * @param string
 189  */
 190 function charset_encode($string,$charset,$htmlencode=true) {
 191     global $default_charset;
 192
 193     $encode=fixcharset($charset);
 194     $encodefile=SM_PATH . 'functions/encode/' . $encode . '.php';
 195     if (file_exists($encodefile)) {
 196         include_once($encodefile);
 197         $ret = call_user_func('charset_encode_'.$encode, $string);
 198     } else {
 199         include_once(SM_PATH . 'functions/encode/us_ascii.php');
 200         $ret = charset_encode_us_ascii($string);
 201     }
 202
 203     /**
 204      * Undo html special chars, some places (like compose form) have
 205      * own sanitizing functions and don't need html symbols.
 206      * Undo chars only after encoding in order to prevent conversion of
 207      * html entities in plain text emails.
 208      */
 209     if (! $htmlencode ) {
 210         $ret = str_replace(array('&amp;','&gt;','&lt;','&quot;'),array('&','>','<','"'),$ret);
 211     }
 212     return( $ret );
 213 }
 214
 215 /**
 216  * Combined decoding and encoding functions
 217  *
 218  * If conversion is done to charset different that utf-8, unsupported symbols
 219  * will be replaced with question marks.
 220  * @since 1.5.1
 221  * @param string $in_charset initial charset
 222  * @param string $string string that has to be converted
 223  * @param string $out_charset final charset
 224  * @param boolean $htmlencode keep htmlspecialchars encoding
 225  * @return string converted string
 226  */
 227 function charset_convert($in_charset,$string,$out_charset,$htmlencode=true) {
 228     $string=charset_decode($in_charset,$string);
 229     $string=charset_encode($string,$out_charset,$htmlencode);
 230     return $string;
 231 }
 232
 233 /**
 234  * Makes charset name suitable for decoding cycles
 235  *
 236  * @since 1.5.0
 237  * @param string $charset Name of charset
 238  * @return string $charset Adjusted name of charset
 239  */
 240 function fixcharset($charset) {
 241     /* remove minus and characters that might be used in paths from charset
 242      * name in order to be able to use it in function names and include calls.
 243      */
 244     $charset=preg_replace("/[-:.\/\\\]/",'_',$charset);
 245
 246     // windows-125x and cp125x charsets
 247     $charset=str_replace('windows_','cp',$charset);
 248
 249     // ibm > cp
 250     $charset=str_replace('ibm','cp',$charset);
 251
 252     // iso-8859-8-i -> iso-8859-8
 253     // use same cycle until I'll find differences
 254     $charset=str_replace('iso_8859_8_i','iso_8859_8',$charset);
 255
 256     return $charset;
 257 }
 258
 259 /**
 260  * Set up the language to be output
 261  * if $do_search is true, then scan the browser information
 262  * for a possible language that we know
 263  *
 264  * Function sets system locale environment (LC_ALL, LANG, LANGUAGE),
 265  * gettext translation bindings and html header information.
 266  *
 267  * Function returns error codes, if there is some fatal error.
 268  *  0 = no error,
 269  *  1 = mbstring support is not present,
 270  *  2 = mbstring support is not present, user's translation reverted to en_US.
 271  *
 272  * @param string $sm_language translation used by user's interface
 273  * @param bool $do_search use browser's preferred language detection functions. Defaults to false.
 274  * @param bool $default set $sm_language to $squirrelmail_default_language if language detection fails or language is not set. Defaults to false.
 275  * @return int function execution error codes.
 276  */
 277 function set_up_language($sm_language, $do_search = false, $default = false) {
 278
 279     static $SetupAlready = 0;
 280     global $use_gettext, $languages,
 281            $squirrelmail_language, $squirrelmail_default_language, $default_charset,
 282            $sm_notAlias, $username, $data_dir;
 283
 284     if ($SetupAlready) {
 285         return;
 286     }
 287
 288     $SetupAlready = TRUE;
 289     sqgetGlobalVar('HTTP_ACCEPT_LANGUAGE',  $accept_lang, SQ_SERVER);
 290
 291     if ($do_search && ! $sm_language && isset($accept_lang)) {
 292         $sm_language = substr($accept_lang, 0, 2);
 293     }
 294
 295     if ((!$sm_language||$default) && isset($squirrelmail_default_language)) {
 296         $squirrelmail_language = $squirrelmail_default_language;
 297         $sm_language = $squirrelmail_default_language;
 298     }
 299     $sm_notAlias = $sm_language;
 300
 301     // Catching removed translation
 302     // System reverts to English translation if user prefs contain translation
 303     // that is not available in $languages array
 304     if (!isset($languages[$sm_notAlias])) {
 305         $sm_notAlias="en_US";
 306     }
 307
 308     while (isset($languages[$sm_notAlias]['ALIAS'])) {
 309         $sm_notAlias = $languages[$sm_notAlias]['ALIAS'];
 310     }
 311
 312     if ( isset($sm_language) &&
 313          $use_gettext &&
 314          $sm_language != '' &&
 315          isset($languages[$sm_notAlias]['CHARSET']) ) {
 316         sq_bindtextdomain( 'squirrelmail', SM_PATH . 'locale/' );
 317         sq_textdomain( 'squirrelmail' );
 318
 319         // set codeset in order to avoid gettext charset conversions
 320         if (function_exists('bind_textdomain_codeset')) {
 321             // Japanese translation uses different internal charset
 322             if ($sm_notAlias == 'ja_JP') {
 323                 bind_textdomain_codeset ('squirrelmail', 'EUC-JP');
 324             } else {
 325                 bind_textdomain_codeset ('squirrelmail', $languages[$sm_notAlias]['CHARSET'] );
 326             }
 327         }
 328
 329         // Use LOCALE key, if it is set.
 330         if (isset($languages[$sm_notAlias]['LOCALE'])){
 331             $longlocale=$languages[$sm_notAlias]['LOCALE'];
 332         } else {
 333             $longlocale=$sm_notAlias;
 334         }
 335
 336         // try setting locale
 337         $retlocale=sq_setlocale(LC_ALL, $longlocale);
 338
 339         // check if locale is set and assign that locale to $longlocale
 340         // in order to use it in putenv calls.
 341         if (! is_bool($retlocale)) {
 342             $longlocale=$retlocale;
 343         } elseif (is_array($longlocale)) {
 344             // setting of all locales failed.
 345             // we need string instead of array used in LOCALE key.
 346             $longlocale=$sm_notAlias;
 347         }
 348
 349         if ( !((bool)ini_get('safe_mode')) &&
 350              getenv( 'LC_ALL' ) != $longlocale ) {
 351             putenv( "LC_ALL=$longlocale" );
 352             putenv( "LANG=$longlocale" );
 353             putenv( "LANGUAGE=$longlocale" );
 354             putenv( "LC_NUMERIC=C" );
 355             if ($sm_notAlias=='tr_TR') putenv( "LC_CTYPE=C" );
 356         }
 357         // Workaround for plugins that use numbers with floating point
 358         // It might be removed if plugins use correct decimal delimiters
 359         // according to locale settings.
 360         setlocale(LC_NUMERIC, 'C');
 361         // Workaround for specific Turkish strtolower/strtoupper rules.
 362         // Many functions expect English conversion rules.
 363         if ($sm_notAlias=='tr_TR') setlocale(LC_CTYPE,'C');
 364
 365         // Set text direction/alignment variables
 366         // These don't appear to be used... are they safe to remove?
 367         if (isset($languages[$sm_notAlias]['DIR']) &&
 368             $languages[$sm_notAlias]['DIR'] == 'rtl') {
 369             /**
 370              * Text direction
 371              * @global string $text_direction
 372              */
 373             $text_direction='rtl';
 374             /**
 375              * Left alignment
 376              * @global string $left_align
 377              */
 378             $left_align='right';
 379             /**
 380              * Right alignment
 381              * @global string $right_align
 382              */
 383             $right_align='left';
 384         } else {
 385             $text_direction='ltr';
 386             $left_align='left';
 387             $right_align='right';
 388         }
 389
 390         $squirrelmail_language = $sm_notAlias;
 391         if ($squirrelmail_language == 'ja_JP') {
 392             header ('Content-Type: text/html; charset=EUC-JP');
 393             if (!function_exists('mb_internal_encoding')) {
 394                 // Error messages can't be displayed here
 395                 $error = 1;
 396                 // Revert to English if possible.
 397                 if (function_exists('setPref')  && $username!='' && $data_dir!="") {
 398                     setPref($data_dir, $username, 'language', "en_US");
 399                     $error = 2;
 400                 }
 401                 // stop further execution in order not to get php errors on mb_internal_encoding().
 402                 return $error;
 403             }
 404             if (function_exists('mb_language')) {
 405                 mb_language('Japanese');
 406             }
 407             mb_internal_encoding('EUC-JP');
 408             mb_http_output('pass');
 409         } elseif ($squirrelmail_language == 'en_US') {
 410             header( 'Content-Type: text/html; charset=' . $default_charset );
 411         } else {
 412             header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] );
 413         }
 414     }
 415     return 0;
 416 }
 417
 418 /**
 419  * Sets default_charset variable according to the one that is used by user's translations.
 420  *
 421  * Function changes global $default_charset variable in order to be sure, that it
 422  * contains charset used by user's translation. Sanity of $squirrelmail_default_language
 423  * and $default_charset combination provided in SquirrelMail config is also tested.
 424  *
 425  * There can be a $default_charset setting in the
 426  * config.php file, but the user may have a different language
 427  * selected for a user interface. This function checks the
 428  * language selected by the user and tags the outgoing messages
 429  * with the appropriate charset corresponding to the language
 430  * selection. This is "more right" (tm), than just stamping the
 431  * message blindly with the system-wide $default_charset.
 432  */
 433 function set_my_charset(){
 434     global $data_dir, $username, $default_charset, $languages, $squirrelmail_default_language;
 435
 436     $my_language = getPref($data_dir, $username, 'language');
 437     if (!$my_language) {
 438         $my_language = $squirrelmail_default_language ;
 439     }
 440     // Catch removed translation
 441     if (!isset($languages[$my_language])) {
 442         $my_language="en_US";
 443     }
 444     while (isset($languages[$my_language]['ALIAS'])) {
 445         $my_language = $languages[$my_language]['ALIAS'];
 446     }
 447     $my_charset = $languages[$my_language]['CHARSET'];
 448     if ($my_language!='en_US') {
 449         $default_charset = $my_charset;
 450     }
 451 }
 452
 453 /**************************
 454  * Japanese extra functions
 455  **************************/
 456
 457 /**
 458  * Japanese decoding function
 459  *
 460  * converts string to euc-jp, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
 461  * charset. Needs mbstring support in php.
 462  * @param string $ret text, that has to be converted
 463  * @return string converted string
 464  * @since 1.5.1
 465  */
 466 function japanese_xtra_decode($ret) {
 467     if (function_exists('mb_detect_encoding')) {
 468         $detect_encoding = @mb_detect_encoding($ret);
 469         if ($detect_encoding == 'JIS' ||
 470             $detect_encoding == 'EUC-JP' ||
 471             $detect_encoding == 'SJIS' ||
 472             $detect_encoding == 'UTF-8') {
 473
 474             $ret = mb_convert_kana(mb_convert_encoding($ret, 'EUC-JP', 'AUTO'), "KV");
 475         }
 476     }
 477     return $ret;
 478 }
 479
 480 /**
 481  * Japanese encoding function
 482  *
 483  * converts string to jis, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
 484  * charset. Needs mbstring support in php.
 485  * @param string $ret text, that has to be converted
 486  * @return string converted text
 487  * @since 1.5.1
 488  */
 489 function japanese_xtra_encode($ret) {
 490     if (function_exists('mb_detect_encoding')) {
 491         $detect_encoding = @mb_detect_encoding($ret);
 492         if ($detect_encoding == 'JIS' ||
 493             $detect_encoding == 'EUC-JP' ||
 494             $detect_encoding == 'SJIS' ||
 495             $detect_encoding == 'UTF-8') {
 496
 497             $ret = mb_convert_encoding(mb_convert_kana($ret, "KV"), 'JIS', 'AUTO');
 498         }
 499     }
 500     return $ret;
 501 }
 502
 503 /**
 504  * Japanese header encoding function
 505  *
 506  * creates base64 encoded header in iso-2022-jp charset
 507  * @param string $ret text, that has to be converted
 508  * @return string mime base64 encoded string
 509  * @since 1.5.1
 510  */
 511 function japanese_xtra_encodeheader($ret) {
 512     if (function_exists('mb_detect_encoding')) {
 513         $result = '';
 514         if (strlen($ret) > 0) {
 515             $tmpstr = mb_substr($ret, 0, 1);
 516             $prevcsize = strlen($tmpstr);
 517             for ($i = 1; $i < mb_strlen($ret); $i++) {
 518                 $tmp = mb_substr($ret, $i, 1);
 519                 if (strlen($tmp) == $prevcsize) {
 520                     $tmpstr .= $tmp;
 521                 } else {
 522                     if ($prevcsize == 1) {
 523                         $result .= $tmpstr;
 524                     } else {
 525                         $result .= str_replace(' ', '',
 526                                                mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
 527                     }
 528                     $tmpstr = $tmp;
 529                     $prevcsize = strlen($tmp);
 530                 }
 531             }
 532             if (strlen($tmpstr)) {
 533                 if (strlen(mb_substr($tmpstr, 0, 1)) == 1)
 534                     $result .= $tmpstr;
 535                 else
 536                     $result .= str_replace(' ', '',
 537                                            mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
 538             }
 539         }
 540         $ret = $result;
 541     }
 542     return $ret;
 543 }
 544
 545 /**
 546  * Japanese header decoding function
 547  *
 548  * return human readable string from mime header. string is returned in euc-jp
 549  * charset.
 550  * @param string $ret header string
 551  * @return string decoded header string
 552  * @since 1.5.1
 553  */
 554 function japanese_xtra_decodeheader($ret) {
 555     if (function_exists('mb_detect_encoding')) {
 556         $ret = str_replace("\t", "", $ret);
 557         if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $ret))
 558             $ret = @mb_decode_mimeheader($ret);
 559         $ret = @mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
 560     }
 561     return $ret;
 562 }
 563
 564 /**
 565  * Japanese downloaded filename processing function
 566  *
 567  * Returns shift-jis or euc-jp encoded file name
 568  * @param string $ret string
 569  * @param string $useragent browser
 570  * @return string converted string
 571  * @since 1.5.1
 572  */
 573 function japanese_xtra_downloadfilename($ret,$useragent) {
 574     if (function_exists('mb_detect_encoding')) {
 575         if (strstr($useragent, 'Windows') !== false ||
 576             strstr($useragent, 'Mac_') !== false) {
 577             $ret = mb_convert_encoding($ret, 'SJIS', 'AUTO');
 578         } else {
 579             $ret = mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
 580         }
 581     }
 582     return $ret;
 583 }
 584
 585 /**
 586  * Japanese wordwrap function
 587  *
 588  * wraps text at set number of symbols
 589  * @param string $ret text
 590  * @param integer $wrap number of symbols per line
 591  * @return string wrapped text
 592  * @since 1.5.1
 593  */
 594 function japanese_xtra_wordwrap($ret,$wrap) {
 595     if (function_exists('mb_detect_encoding')) {
 596         $no_begin = "\x21\x25\x29\x2c\x2e\x3a\x3b\x3f\x5d\x7d\xa1\xf1\xa1\xeb\xa1" .
 597             "\xc7\xa1\xc9\xa2\xf3\xa1\xec\xa1\xed\xa1\xee\xa1\xa2\xa1\xa3\xa1\xb9" .
 598             "\xa1\xd3\xa1\xd5\xa1\xd7\xa1\xd9\xa1\xdb\xa1\xcd\xa4\xa1\xa4\xa3\xa4" .
 599             "\xa5\xa4\xa7\xa4\xa9\xa4\xc3\xa4\xe3\xa4\xe5\xa4\xe7\xa4\xee\xa1\xab" .
 600             "\xa1\xac\xa1\xb5\xa1\xb6\xa5\xa1\xa5\xa3\xa5\xa5\xa5\xa7\xa5\xa9\xa5" .
 601             "\xc3\xa5\xe3\xa5\xe5\xa5\xe7\xa5\xee\xa5\xf5\xa5\xf6\xa1\xa6\xa1\xbc" .
 602             "\xa1\xb3\xa1\xb4\xa1\xaa\xa1\xf3\xa1\xcb\xa1\xa4\xa1\xa5\xa1\xa7\xa1" .
 603             "\xa8\xa1\xa9\xa1\xcf\xa1\xd1";
 604         // This don't appear to be used... is it safe to remove?
 605         $no_end = "\x5c\x24\x28\x5b\x7b\xa1\xf2\x5c\xa1\xc6\xa1\xc8\xa1\xd2\xa1" .
 606             "\xd4\xa1\xd6\xa1\xd8\xa1\xda\xa1\xcc\xa1\xf0\xa1\xca\xa1\xce\xa1\xd0\xa1\xef";
 607
 608         if (strlen($ret) >= $wrap &&
 609             substr($ret, 0, 1) != '>' &&
 610             strpos($ret, 'http://') === FALSE &&
 611             strpos($ret, 'https://') === FALSE &&
 612             strpos($ret, 'ftp://') === FALSE) {
 613
 614             $ret = mb_convert_kana($ret, "KV");
 615
 616             $line_new = '';
 617             $ptr = 0;
 618
 619             while ($ptr < strlen($ret) - 1) {
 620                 $l = mb_strcut($ret, $ptr, $wrap);
 621                 $ptr += strlen($l);
 622                 $tmp = $l;
 623
 624                 $l = mb_strcut($ret, $ptr, 2);
 625                 while (strlen($l) != 0 && mb_strpos($no_begin, $l) !== FALSE ) {
 626                     $tmp .= $l;
 627                     $ptr += strlen($l);
 628                     $l = mb_strcut($ret, $ptr, 1);
 629                 }
 630                 $line_new .= $tmp;
 631                 if ($ptr < strlen($ret) - 1)
 632                     $line_new .= "\n";
 633             }
 634             $ret = $line_new;
 635         }
 636     }
 637     return $ret;
 638 }
 639
 640 /**
 641  * Japanese imap folder name encoding function
 642  *
 643  * converts folder name from euc-jp to utf7-imap
 644  * @param string $ret folder name
 645  * @return string converted folder name
 646  * @since 1.5.1
 647  */
 648 function japanese_xtra_utf7_imap_encode($ret){
 649     if (function_exists('mb_detect_encoding')) {
 650         $ret = mb_convert_encoding($ret, 'UTF7-IMAP', 'EUC-JP');
 651     }
 652     return $ret;
 653 }
 654
 655 /**
 656  * Japanese imap folder name decoding function
 657  *
 658  * converts folder name from utf7-imap to euc-jp.
 659  * @param string $ret folder name in utf7-imap
 660  * @return string converted folder name
 661  * @since 1.5.1
 662  */
 663 function japanese_xtra_utf7_imap_decode($ret) {
 664     if (function_exists('mb_detect_encoding')) {
 665         $ret = mb_convert_encoding($ret, 'EUC-JP', 'UTF7-IMAP');
 666     }
 667     return $ret;
 668 }
 669
 670 /**
 671  * Japanese string trimming function
 672  *
 673  * trims string to defined number of symbols
 674  * @param string $ret string
 675  * @param integer $width number of symbols
 676  * @return string trimmed string
 677  * @since 1.5.1
 678  */
 679 function japanese_xtra_strimwidth($ret,$width) {
 680     if (function_exists('mb_detect_encoding')) {
 681         $ret = mb_strimwidth($ret, 0, $width, '...');
 682     }
 683     return $ret;
 684 }
 685
 686 /********************************
 687  * Korean charset extra functions
 688  ********************************/
 689
 690 /**
 691  * Korean downloaded filename processing functions
 692  *
 693  * @param string default return value
 694  * @return string
 695  * @since 1.5.1
 696  */
 697 function korean_xtra_downloadfilename($ret) {
 698     $ret = str_replace("\x0D\x0A", '', $ret);  /* Hanmail's CR/LF Clear */
 699     for ($i=0;$i<strlen($ret);$i++) {
 700         if ($ret[$i] >= "\xA1" && $ret[$i] <= "\xFE") {   /* 0xA1 - 0XFE are Valid */
 701             $i++;
 702             continue;
 703         } else if (($ret[$i] >= 'a' && $ret[$i] <= 'z') || /* From Original ereg_replace in download.php */
 704                    ($ret[$i] >= 'A' && $ret[$i] <= 'Z') ||
 705                    ($ret[$i] == '.') || ($ret[$i] == '-')) {
 706             continue;
 707         } else {
 708             $ret[$i] = '_';
 709         }
 710     }
 711     return $ret;
 712 }
 713
 714 /**
 715  * Replaces non-braking spaces inserted by some browsers with regular space
 716  *
 717  * This function can be used to replace non-braking space symbols
 718  * that are inserted in forms by some browsers instead of normal
 719  * space symbol.
 720  *
 721  * @param string $string Text that needs to be cleaned
 722  * @param string $charset Charset used in text
 723  * @return string Cleaned text
 724  */
 725 function cleanup_nbsp($string,$charset) {
 726
 727   // reduce number of case statements
 728   if (stristr('iso-8859-',substr($charset,0,9))){
 729     $output_charset="iso-8859-x";
 730   }
 731   if (stristr('windows-125',substr($charset,0,11))){
 732     $output_charset="cp125x";
 733   }
 734   if (stristr('koi8',substr($charset,0,4))){
 735     $output_charset="koi8-x";
 736   }
 737   if (! isset($output_charset)){
 738     $output_charset=strtolower($charset);
 739   }
 740
 741 // where is non-braking space symbol
 742 switch($output_charset):
 743  case "iso-8859-x":
 744  case "cp125x":
 745  case "iso-2022-jp":
 746   $nbsp="\xA0";
 747   break;
 748  case "koi8-x":
 749    $nbsp="\x9A";
 750    break;
 751  case "utf-8":
 752    $nbsp="\xC2\xA0";
 753    break;
 754  default:
 755    // don't change string if charset is unmatched
 756    return $string;
 757 endswitch;
 758
 759 // return space instead of non-braking space.
 760  return str_replace($nbsp,' ',$string);
 761 }
 762
 763 /**
 764  * Function informs if it is safe to convert given charset to the one that is used by user.
 765  *
 766  * It is safe to use conversion only if user uses utf-8 encoding and when
 767  * converted charset is similar to the one that is used by user.
 768  *
 769  * @param string $input_charset Charset of text that needs to be converted
 770  * @return bool is it possible to convert to user's charset
 771  */
 772 function is_conversion_safe($input_charset) {
 773   global $languages, $sm_notAlias, $default_charset, $lossy_encoding;
 774
 775     if (isset($lossy_encoding) && $lossy_encoding )
 776         return true;
 777
 778  // convert to lower case
 779  $input_charset = strtolower($input_charset);
 780
 781  // Is user's locale Unicode based ?
 782  if ( $default_charset == "utf-8" ) {
 783    return true;
 784  }
 785
 786  // Charsets that are similar
 787 switch ($default_charset):
 788 case "windows-1251":
 789       if ( $input_charset == "iso-8859-5" ||
 790            $input_charset == "koi8-r" ||
 791            $input_charset == "koi8-u" ) {
 792         return true;
 793      } else {
 794         return false;
 795      }
 796 case "windows-1257":
 797   if ( $input_charset == "iso-8859-13" ||
 798        $input_charset == "iso-8859-4" ) {
 799     return true;
 800   } else {
 801     return false;
 802   }
 803 case "iso-8859-4":
 804   if ( $input_charset == "iso-8859-13" ||
 805        $input_charset == "windows-1257" ) {
 806      return true;
 807   } else {
 808      return false;
 809   }
 810 case "iso-8859-5":
 811   if ( $input_charset == "windows-1251" ||
 812        $input_charset == "koi8-r" ||
 813        $input_charset == "koi8-u" ) {
 814      return true;
 815   } else {
 816      return false;
 817   }
 818 case "iso-8859-13":
 819   if ( $input_charset == "iso-8859-4" ||
 820        $input_charset == "windows-1257" ) {
 821      return true;
 822   } else {
 823      return false;
 824   }
 825 case "koi8-r":
 826   if ( $input_charset == "windows-1251" ||
 827        $input_charset == "iso-8859-5" ||
 828        $input_charset == "koi8-u" ) {
 829      return true;
 830   } else {
 831      return false;
 832   }
 833 case "koi8-u":
 834   if ( $input_charset == "windows-1251" ||
 835        $input_charset == "iso-8859-5" ||
 836        $input_charset == "koi8-r" ) {
 837      return true;
 838   } else {
 839      return false;
 840   }
 841 default:
 842    return false;
 843 endswitch;
 844 }
 845
 846
 847 /* ------------------------------ main --------------------------- */
 848
 849 global $squirrelmail_language, $languages, $use_gettext;
 850
 851 if (! isset($squirrelmail_language)) {
 852     $squirrelmail_language = '';
 853 }
 854
 855 /**
 856  * Array specifies the available translations.
 857  *
 858  * Structure of array:
 859  * $languages['language']['variable'] = 'value'
 860  *
 861  * Possible 'variable' names:
 862  *  NAME      - Translation name in English
 863  *  CHARSET   - Encoding used by translation
 864  *  ALIAS     - used when 'language' is only short name and 'value' should provide long language name
 865  *  ALTNAME   - Native translation name. Any 8bit symbols must be html encoded.
 866  *  LOCALE    - Full locale name (in xx_XX.charset format)
 867  *  DIR       - Text direction. Used to define Right-to-Left languages. Possible values 'rtl' or 'ltr'. If undefined - defaults to 'ltr'
 868  *  XTRA_CODE - translation uses special functions. See doc/i18n.txt
 869  *
 870  * Each 'language' definition requires NAME+CHARSET or ALIAS variables.
 871  *
 872  * @name $languages
 873  * @global array $languages
 874  */
 875 $languages['bg_BG']['NAME']    = 'Bulgarian';
 876 $languages['bg_BG']['ALTNAME'] = '&#1041;&#1098;&#1083;&#1075;&#1072;&#1088;&#1089;&#1082;&#1080;';
 877 $languages['bg_BG']['CHARSET'] = 'windows-1251';
 878 $languages['bg_BG']['LOCALE']  = 'bg_BG.CP1251';
 879 $languages['bg']['ALIAS'] = 'bg_BG';
 880
 881 $languages['bn_IN']['NAME']    = 'Bengali';
 882 $languages['bn_IN']['CHARSET'] = 'utf-8';
 883 $languages['bn_IN']['LOCALE']  = 'bn_IN.UTF-8';
 884 $languages['bn_BD']['ALIAS'] = 'bn_IN';
 885 $languages['bn']['ALIAS'] = 'bn_IN';
 886
 887 $languages['ca_ES']['NAME']    = 'Catalan';
 888 $languages['ca_ES']['CHARSET'] = 'iso-8859-1';
 889 $languages['ca_ES']['LOCALE']  = array('ca_ES.ISO8859-1','ca_ES.ISO-8859-1','ca_ES');
 890 $languages['ca']['ALIAS'] = 'ca_ES';
 891
 892 $languages['cs_CZ']['NAME']    = 'Czech';
 893 $languages['cs_CZ']['ALTNAME'] = '&#268;e&scaron;tina';
 894 $languages['cs_CZ']['CHARSET'] = 'iso-8859-2';
 895 $languages['cs_CZ']['LOCALE']  = array('cs_CZ.ISO8859-2','cs_CZ.ISO-8859-2','cs_CZ');
 896 $languages['cs']['ALIAS']      = 'cs_CZ';
 897
 898 $languages['cy_GB']['NAME']    = 'Welsh';
 899 $languages['cy_GB']['ALTNAME'] = 'Cymraeg';
 900 $languages['cy_GB']['CHARSET'] = 'iso-8859-1';
 901 $languages['cy_GB']['LOCALE']  = array('cy_GB.ISO8859-1','cy_GB.ISO-8859-1','cy_GB');
 902 $languages['cy']['ALIAS'] = 'cy_GB';
 903
 904 // Danish locale is da_DK.
 905 $languages['da_DK']['NAME']    = 'Danish';
 906 $languages['da_DK']['ALTNAME'] = 'Dansk';
 907 $languages['da_DK']['CHARSET'] = 'iso-8859-1';
 908 $languages['da_DK']['LOCALE']  = array('da_DK.ISO8859-1','da_DK.ISO-8859-1','da_DK');
 909 $languages['da']['ALIAS'] = 'da_DK';
 910
 911 $languages['de_DE']['NAME']    = 'German';
 912 $languages['de_DE']['ALTNAME'] = 'Deutsch';
 913 $languages['de_DE']['CHARSET'] = 'iso-8859-1';
 914 $languages['de_DE']['LOCALE']  = array('de_DE.ISO8859-1','de_DE.ISO-8859-1','de_DE');
 915 $languages['de']['ALIAS'] = 'de_DE';
 916
 917 $languages['el_GR']['NAME']    = 'Greek';
 918 $languages['el_GR']['ALTNAME'] = '&Epsilon;&lambda;&lambda;&eta;&nu;&iota;&kappa;&#940;';
 919 $languages['el_GR']['CHARSET'] = 'iso-8859-7';
 920 $languages['el_GR']['LOCALE']  = array('el_GR.ISO8859-7','el_GR.ISO-8859-7','el_GR');
 921 $languages['el']['ALIAS'] = 'el_GR';
 922
 923 $languages['en_GB']['NAME']    = 'British';
 924 $languages['en_GB']['CHARSET'] = 'iso-8859-15';
 925 $languages['en_GB']['LOCALE']  = array('en_GB.ISO8859-15','en_GB.ISO-8859-15','en_GB');
 926
 927 $languages['en_US']['NAME']    = 'English';
 928 $languages['en_US']['CHARSET'] = 'iso-8859-1';
 929 $languages['en_US']['LOCALE']  = 'en_US.ISO8859-1';
 930 $languages['en']['ALIAS'] = 'en_US';
 931
 932 $languages['es_ES']['NAME']    = 'Spanish';
 933 $languages['es_ES']['ALTNAME'] = 'Espa&ntilde;ol';
 934 $languages['es_ES']['CHARSET'] = 'iso-8859-1';
 935 $languages['es_ES']['LOCALE']  = array('es_ES.ISO8859-1','es_ES.ISO-8859-1','es_ES');
 936 $languages['es']['ALIAS'] = 'es_ES';
 937
 938 $languages['et_EE']['NAME']    = 'Estonian';
 939 $languages['et_EE']['CHARSET'] = 'iso-8859-15';
 940 $languages['et_EE']['LOCALE']  = array('et_EE.ISO8859-15','et_EE.ISO-8859-15','et_EE');
 941 $languages['et']['ALIAS'] = 'et_EE';
 942
 943 $languages['eu_ES']['NAME']    = 'Basque';
 944 $languages['eu_ES']['CHARSET'] = 'iso-8859-1';
 945 $languages['eu_ES']['LOCALE']  = array('eu_ES.ISO8859-1','eu_ES.ISO-8859-1','eu_ES');
 946 $languages['eu']['ALIAS'] = 'eu_ES';
 947
 948 $languages['fo_FO']['NAME']    = 'Faroese';
 949 $languages['fo_FO']['CHARSET'] = 'iso-8859-1';
 950 $languages['fo_FO']['LOCALE']  = array('fo_FO.ISO8859-1','fo_FO.ISO-8859-1','fo_FO');
 951 $languages['fo']['ALIAS'] = 'fo_FO';
 952
 953 $languages['fi_FI']['NAME']    = 'Finnish';
 954 $languages['fi_FI']['ALTNAME'] = 'Suomi';
 955 $languages['fi_FI']['CHARSET'] = 'iso-8859-1';
 956 $languages['fi_FI']['LOCALE']  = array('fi_FI.ISO8859-1','fi_FI.ISO-8859-1','fi_FI');
 957 $languages['fi']['ALIAS'] = 'fi_FI';
 958
 959 $languages['fr_FR']['NAME']    = 'French';
 960 $languages['fr_FR']['ALTNAME'] = 'Fran&#231;ais';
 961 $languages['fr_FR']['CHARSET'] = 'iso-8859-1';
 962 $languages['fr_FR']['LOCALE']  = array('fr_FR.ISO8859-1','fr_FR.ISO-8859-1','fr_FR');
 963 $languages['fr']['ALIAS'] = 'fr_FR';
 964
 965 $languages['hr_HR']['NAME']    = 'Croatian';
 966 $languages['hr_HR']['CHARSET'] = 'iso-8859-2';
 967 $languages['hr_HR']['LOCALE']  = array('hr_HR.ISO8859-2','hr_HR.ISO-8859-2','hr_HR');
 968 $languages['hr']['ALIAS'] = 'hr_HR';
 969
 970 $languages['hu_HU']['NAME']    = 'Hungarian';
 971 $languages['hu_HU']['ALTNAME'] = 'Magyar';
 972 $languages['hu_HU']['CHARSET'] = 'iso-8859-2';
 973 $languages['hu_HU']['LOCALE']  = array('hu_HU.ISO8859-2','hu_HU.ISO-8859-2','hu_HU');
 974 $languages['hu']['ALIAS'] = 'hu_HU';
 975
 976 $languages['id_ID']['NAME']    = 'Indonesian';
 977 $languages['id_ID']['ALTNAME'] = 'Bahasa Indonesia';
 978 $languages['id_ID']['CHARSET'] = 'iso-8859-1';
 979 $languages['id_ID']['LOCALE']  = array('id_ID.ISO8859-1','id_ID.ISO-8859-1','id_ID');
 980 $languages['id']['ALIAS'] = 'id_ID';
 981
 982 $languages['is_IS']['NAME']    = 'Icelandic';
 983 $languages['is_IS']['ALTNAME'] = '&Iacute;slenska';
 984 $languages['is_IS']['CHARSET'] = 'iso-8859-1';
 985 $languages['is_IS']['LOCALE']  = array('is_IS.ISO8859-1','is_IS.ISO-8859-1','is_IS');
 986 $languages['is']['ALIAS'] = 'is_IS';
 987
 988 $languages['it_IT']['NAME']    = 'Italian';
 989 $languages['it_IT']['CHARSET'] = 'iso-8859-1';
 990 $languages['it_IT']['LOCALE']  = array('it_IT.ISO8859-1','it_IT.ISO-8859-1','it_IT');
 991 $languages['it']['ALIAS'] = 'it_IT';
 992
 993 $languages['ja_JP']['NAME']    = 'Japanese';
 994 $languages['ja_JP']['ALTNAME'] = '&#26085;&#26412;&#35486;';
 995 $languages['ja_JP']['CHARSET'] = 'iso-2022-jp';
 996 $languages['ja_JP']['LOCALE'] = 'ja_JP.EUC-JP';
 997 $languages['ja_JP']['XTRA_CODE'] = 'japanese_xtra';
 998 $languages['ja']['ALIAS'] = 'ja_JP';
 999
1000 $languages['ko_KR']['NAME']    = 'Korean';
1001 $languages['ko_KR']['CHARSET'] = 'euc-KR';
1002 $languages['ko_KR']['LOCALE']  = 'ko_KR.EUC-KR';
1003 $languages['ko_KR']['XTRA_CODE'] = 'korean_xtra';
1004 $languages['ko']['ALIAS'] = 'ko_KR';
1005
1006 $languages['lt_LT']['NAME']    = 'Lithuanian';
1007 $languages['lt_LT']['ALTNAME'] = 'Lietuvi&#371;';
1008 $languages['lt_LT']['CHARSET'] = 'utf-8';
1009 $languages['lt_LT']['LOCALE'] = 'lt_LT.UTF-8';
1010 $languages['lt']['ALIAS'] = 'lt_LT';
1011
1012 $languages['nl_NL']['NAME']    = 'Dutch';
1013 $languages['nl_NL']['ALTNAME'] = 'Nederlands';
1014 $languages['nl_NL']['CHARSET'] = 'iso-8859-1';
1015 $languages['nl_NL']['LOCALE']  = array('nl_NL.ISO8859-1','nl_NL.ISO-8859-1','nl_NL');
1016 $languages['nl']['ALIAS'] = 'nl_NL';
1017
1018 $languages['ms_MY']['NAME']    = 'Malay';
1019 $languages['ms_MY']['ALTNAME'] = 'Bahasa Melayu';
1020 $languages['ms_MY']['CHARSET'] = 'iso-8859-1';
1021 $languages['ms_MY']['LOCALE']  = array('ms_MY.ISO8859-1','ms_MY.ISO-8859-1','ms_MY');
1022 $languages['my']['ALIAS'] = 'ms_MY';
1023
1024 $languages['nb_NO']['NAME']    = 'Norwegian (Bokm&aring;l)';
1025 $languages['nb_NO']['ALTNAME'] = 'Norsk (Bokm&aring;l)';
1026 $languages['nb_NO']['CHARSET'] = 'iso-8859-1';
1027 $languages['nb_NO']['LOCALE']  = array('nb_NO.ISO8859-1','nb_NO.ISO-8859-1','nb_NO');
1028 $languages['nb']['ALIAS'] = 'nb_NO';
1029
1030 $languages['nn_NO']['NAME']    = 'Norwegian (Nynorsk)';
1031 $languages['nn_NO']['ALTNAME'] = 'Norsk (Nynorsk)';
1032 $languages['nn_NO']['CHARSET'] = 'iso-8859-1';
1033 $languages['nn_NO']['LOCALE']  = array('nn_NO.ISO8859-1','nn_NO.ISO-8859-1','nn_NO');
1034
1035 $languages['pl_PL']['NAME']    = 'Polish';
1036 $languages['pl_PL']['ALTNAME'] = 'Polski';
1037 $languages['pl_PL']['CHARSET'] = 'iso-8859-2';
1038 $languages['pl_PL']['LOCALE']  = array('pl_PL.ISO8859-2','pl_PL.ISO-8859-2','pl_PL');
1039 $languages['pl']['ALIAS'] = 'pl_PL';
1040
1041 $languages['pt_PT']['NAME'] = 'Portuguese (Portugal)';
1042 $languages['pt_PT']['CHARSET'] = 'iso-8859-1';
1043 $languages['pt_PT']['LOCALE']  = array('pt_PT.ISO8859-1','pt_PT.ISO-8859-1','pt_PT');
1044 $languages['pt']['ALIAS'] = 'pt_PT';
1045
1046 $languages['pt_BR']['NAME']    = 'Portuguese (Brazil)';
1047 $languages['pt_BR']['ALTNAME'] = 'Portugu&ecirc;s do Brasil';
1048 $languages['pt_BR']['CHARSET'] = 'iso-8859-1';
1049 $languages['pt_BR']['LOCALE']  = array('pt_BR.ISO8859-1','pt_BR.ISO-8859-1','pt_BR');
1050
1051 $languages['ro_RO']['NAME']    = 'Romanian';
1052 $languages['ro_RO']['ALTNAME'] = 'Rom&acirc;n&#259;';
1053 $languages['ro_RO']['CHARSET'] = 'iso-8859-2';
1054 $languages['ro_RO']['LOCALE']  = array('ro_RO.ISO8859-2','ro_RO.ISO-8859-2','ro_RO');
1055 $languages['ro']['ALIAS'] = 'ro_RO';
1056
1057 $languages['ru_RU']['NAME']    = 'Russian';
1058 $languages['ru_RU']['ALTNAME'] = '&#1056;&#1091;&#1089;&#1089;&#1082;&#1080;&#1081;';
1059 $languages['ru_RU']['CHARSET'] = 'utf-8';
1060 $languages['ru_RU']['LOCALE']  = 'ru_RU.UTF-8';
1061 $languages['ru']['ALIAS'] = 'ru_RU';
1062
1063 $languages['sk_SK']['NAME']    = 'Slovak';
1064 $languages['sk_SK']['CHARSET'] = 'iso-8859-2';
1065 $languages['sk_SK']['LOCALE']  = array('sk_SK.ISO8859-2','sk_SK.ISO-8859-2','sk_SK');
1066 $languages['sk']['ALIAS'] = 'sk_SK';
1067
1068 $languages['sl_SI']['NAME']    = 'Slovenian';
1069 $languages['sl_SI']['ALTNAME'] = 'Sloven&scaron;&#269;ina';
1070 $languages['sl_SI']['CHARSET'] = 'iso-8859-2';
1071 $languages['sl_SI']['LOCALE']  = array('sl_SI.ISO8859-2','sl_SI.ISO-8859-2','sl_SI');
1072 $languages['sl']['ALIAS'] = 'sl_SI';
1073
1074 $languages['sr_YU']['NAME']    = 'Serbian';
1075 $languages['sr_YU']['ALTNAME'] = 'Srpski';
1076 $languages['sr_YU']['CHARSET'] = 'iso-8859-2';
1077 $languages['sr_YU']['LOCALE']  = array('sr_YU.ISO8859-2','sr_YU.ISO-8859-2','sr_YU');
1078 $languages['sr']['ALIAS'] = 'sr_YU';
1079
1080 $languages['sv_SE']['NAME']    = 'Swedish';
1081 $languages['sv_SE']['ALTNAME'] = 'Svenska';
1082 $languages['sv_SE']['CHARSET'] = 'iso-8859-1';
1083 $languages['sv_SE']['LOCALE']  = array('sv_SE.ISO8859-1','sv_SE.ISO-8859-1','sv_SE');
1084 $languages['sv']['ALIAS'] = 'sv_SE';
1085
1086 $languages['th_TH']['NAME']    = 'Thai';
1087 $languages['th_TH']['CHARSET'] = 'tis-620';
1088 $languages['th_TH']['LOCALE']  = 'th_TH.TIS-620';
1089 $languages['th']['ALIAS'] = 'th_TH';
1090
1091 $languages['tl_PH']['NAME']    = 'Tagalog';
1092 $languages['tl_PH']['CHARSET'] = 'iso-8859-1';
1093 $languages['tl_PH']['LOCALE']  = array('tl_PH.ISO8859-1','tl_PH.ISO-8859-1','tl_PH');
1094 $languages['tl']['ALIAS'] = 'tl_PH';
1095
1096 $languages['tr_TR']['NAME']    = 'Turkish';
1097 $languages['tr_TR']['CHARSET'] = 'iso-8859-9';
1098 $languages['tr_TR']['LOCALE']  = array('tr_TR.ISO8859-9','tr_TR.ISO-8859-9','tr_TR');
1099 $languages['tr']['ALIAS'] = 'tr_TR';
1100
1101 $languages['zh_TW']['NAME']    = 'Chinese Trad';
1102 $languages['zh_TW']['CHARSET'] = 'big5';
1103 $languages['zh_TW']['LOCALE']  = 'zh_TW.BIG5';
1104 $languages['tw']['ALIAS'] = 'zh_TW';
1105
1106 $languages['zh_CN']['NAME']    = 'Chinese Simp';
1107 $languages['zh_CN']['CHARSET'] = 'gb2312';
1108 $languages['zh_CN']['LOCALE']  = 'zh_CN.GB2312';
1109 $languages['cn']['ALIAS'] = 'zh_CN';
1110
1111 $languages['uk_UA']['NAME']    = 'Ukrainian';
1112 $languages['uk_UA']['CHARSET'] = 'koi8-u';
1113 $languages['uk_UA']['LOCALE']  = 'uk_UA.KOI8-U';
1114 $languages['uk']['ALIAS'] = 'uk_UA';
1115
1116 $languages['ru_UA']['NAME']    = 'Russian (Ukrainian)';
1117 $languages['ru_UA']['CHARSET'] = 'koi8-r';
1118 $languages['ru_UA']['LOCALE']  = 'ru_UA.KOI8-R';
1119
1120 /*
1121 $languages['vi_VN']['NAME']    = 'Vietnamese';
1122 $languages['vi_VN']['CHARSET'] = 'utf-8';
1123 $languages['vi']['ALIAS'] = 'vi_VN';
1124 */
1125
1126 // Right to left languages
1127 $languages['ar']['NAME']    = 'Arabic';
1128 $languages['ar']['CHARSET'] = 'windows-1256';
1129 $languages['ar']['DIR']     = 'rtl';
1130
1131 $languages['fa_IR']['NAME']    = 'Farsi';
1132 $languages['fa_IR']['CHARSET'] = 'utf-8';
1133 $languages['fa_IR']['DIR']     = 'rtl';
1134 $languages['fa_IR']['LOCALE']  = 'fa_IR.UTF-8';
1135 $languages['fa']['ALIAS']      = 'fa_IR';
1136
1137 $languages['he_IL']['NAME']    = 'Hebrew';
1138 $languages['he_IL']['CHARSET'] = 'windows-1255';
1139 $languages['he_IL']['LOCALE']  = 'he_IL.CP1255';
1140 $languages['he_IL']['DIR']     = 'rtl';
1141 $languages['he']['ALIAS']      = 'he_IL';
1142
1143 $languages['ug']['NAME']    = 'Uighur';
1144 $languages['ug']['CHARSET'] = 'utf-8';
1145 $languages['ug']['DIR']     = 'rtl';
1146
1147 /* Detect whether gettext is installed. */
1148 $gettext_flags = 0;
1149 if (function_exists('_')) {
1150     $gettext_flags += 1;
1151 }
1152 if (function_exists('bindtextdomain')) {
1153     $gettext_flags += 2;
1154 }
1155 if (function_exists('textdomain')) {
1156     $gettext_flags += 4;
1157 }
1158 if (function_exists('ngettext')) {
1159     $gettext_flags += 8;
1160 }
1161
1162 /* If gettext is fully loaded, cool */
1163 if ($gettext_flags == 15) {
1164     $use_gettext = true;
1165 }
1166
1167 /* If ngettext support is missing, load it */
1168 elseif ($gettext_flags == 7) {
1169     $use_gettext = true;
1170     // load internal ngettext functions
1171     include_once(SM_PATH . 'class/l10n.class.php');
1172     include_once(SM_PATH . 'functions/ngettext.php');
1173 }
1174
1175 /* If we can fake gettext, try that */
1176 elseif ($gettext_flags == 0) {
1177     $use_gettext = true;
1178     include_once(SM_PATH . 'functions/gettext.php');
1179 } else {
1180     /* Uh-ho.  A weird install */
1181     if (! $gettext_flags & 1) {
1182       /**
1183        * Function is used as replacement in broken installs
1184        * @ignore
1185        */
1186         function _($str) {
1187             return $str;
1188         }
1189     }
1190     if (! $gettext_flags & 2) {
1191       /**
1192        * Function is used as replacement in broken installs
1193        * @ignore
1194        */
1195         function bindtextdomain() {
1196             return;
1197         }
1198     }
1199     if (! $gettext_flags & 4) {
1200       /**
1201        * Function is used as replacemet in broken installs
1202        * @ignore
1203        */
1204         function textdomain() {
1205             return;
1206         }
1207     }
1208     if (! $gettext_flags & 8) {
1209         /**
1210          * Function is used as replacemet in broken installs
1211          * @ignore
1212          */
1213         function ngettext($str,$str2,$number) {
1214             if ($number>1) {
1215                 return $str2;
1216             } else {
1217                 return $str;
1218             }
1219         }
1220     }
1221 }
1222 ?>