| 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 | /** @ignore */ |
| 20 | if (! defined('SM_PATH')) define('SM_PATH','../'); |
| 21 | |
| 22 | /** Everything uses global.php... */ |
| 23 | require_once(SM_PATH . 'functions/global.php'); |
| 24 | |
| 25 | /** |
| 26 | * Gettext bindtextdomain wrapper. |
| 27 | * |
| 28 | * Wrapper solves differences between php versions in order to provide |
| 29 | * ngettext support. Should be used if translation uses ngettext |
| 30 | * functions. |
| 31 | * @since 1.5.1 |
| 32 | * @param string $domain gettext domain name |
| 33 | * @param string $dir directory that contains all translations |
| 34 | * @return string path to translation directory |
| 35 | */ |
| 36 | function sq_bindtextdomain($domain,$dir) { |
| 37 | global $l10n, $gettext_flags, $sm_notAlias; |
| 38 | |
| 39 | if ($gettext_flags==7) { |
| 40 | // gettext extension without ngettext |
| 41 | if (substr($dir, -1) != '/') $dir .= '/'; |
| 42 | $mofile=$dir . $sm_notAlias . '/LC_MESSAGES/' . $domain . '.mo'; |
| 43 | $input = new FileReader($mofile); |
| 44 | $l10n[$domain] = new gettext_reader($input); |
| 45 | } |
| 46 | |
| 47 | $dir=bindtextdomain($domain,$dir); |
| 48 | |
| 49 | return $dir; |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Gettext textdomain wrapper. |
| 54 | * Makes sure that gettext_domain global is modified. |
| 55 | * @since 1.5.1 |
| 56 | * @param string $name gettext domain name |
| 57 | * @return string gettext domain name |
| 58 | */ |
| 59 | function sq_textdomain($domain) { |
| 60 | global $gettext_domain; |
| 61 | $gettext_domain=textdomain($domain); |
| 62 | return $gettext_domain; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * php setlocale function wrapper |
| 67 | * |
| 68 | * From php 4.3.0 it is possible to use arrays in order to set locale. |
| 69 | * php gettext extension works only when locale is set. This wrapper |
| 70 | * function allows to use more than one locale name. |
| 71 | * |
| 72 | * @param int $category locale category name. Use php named constants |
| 73 | * (LC_ALL, LC_COLLATE, LC_CTYPE, LC_MONETARY, LC_NUMERIC, LC_TIME) |
| 74 | * @param mixed $locale option contains array with possible locales or string with one locale |
| 75 | * @return string name of set locale or false, if all locales fail. |
| 76 | * @since 1.5.1 and 1.4.5 |
| 77 | * @see http://www.php.net/setlocale |
| 78 | */ |
| 79 | function sq_setlocale($category,$locale) { |
| 80 | // string with only one locale |
| 81 | if (is_string($locale)) |
| 82 | return setlocale($category,$locale); |
| 83 | |
| 84 | if (! check_php_version(4,3)) { |
| 85 | $ret=false; |
| 86 | $index=0; |
| 87 | while ( ! $ret && $index<count($locale)) { |
| 88 | $ret=setlocale($category,$locale[$index]); |
| 89 | $index++; |
| 90 | } |
| 91 | } else { |
| 92 | // php 4.3.0 or better, use entire array |
| 93 | $ret=setlocale($category,$locale); |
| 94 | } |
| 95 | return $ret; |
| 96 | } |
| 97 | |
| 98 | /** |
| 99 | * Converts string from given charset to charset, that can be displayed by user translation. |
| 100 | * |
| 101 | * Function by default returns html encoded strings, if translation uses different encoding. |
| 102 | * If Japanese translation is used - function returns string converted to euc-jp |
| 103 | * If iconv or recode functions are enabled and translation uses utf-8 - function returns utf-8 encoded string. |
| 104 | * If $charset is not supported - function returns unconverted string. |
| 105 | * |
| 106 | * sanitizing of html tags is also done by this function. |
| 107 | * |
| 108 | * @param string $charset |
| 109 | * @param string $string Text to be decoded |
| 110 | * @param boolean $force_decode converts string to html without $charset!=$default_charset check. |
| 111 | * Argument is available since 1.5.1 and 1.4.5. |
| 112 | * @return string decoded string |
| 113 | */ |
| 114 | function charset_decode ($charset, $string, $force_decode=false) { |
| 115 | global $languages, $squirrelmail_language, $default_charset; |
| 116 | global $use_php_recode, $use_php_iconv, $aggressive_decoding; |
| 117 | |
| 118 | if (isset($languages[$squirrelmail_language]['XTRA_CODE']) && |
| 119 | function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) { |
| 120 | $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode', $string); |
| 121 | } |
| 122 | |
| 123 | $charset = strtolower($charset); |
| 124 | |
| 125 | set_my_charset(); |
| 126 | |
| 127 | // Variables that allow to use functions without function_exist() calls |
| 128 | if (! isset($use_php_recode) || $use_php_recode=="" ) { |
| 129 | $use_php_recode=false; } |
| 130 | if (! isset($use_php_iconv) || $use_php_iconv=="" ) { |
| 131 | $use_php_iconv=false; } |
| 132 | |
| 133 | // Don't do conversion if charset is the same. |
| 134 | if ( ! $force_decode && $charset == strtolower($default_charset) ) |
| 135 | return htmlspecialchars($string); |
| 136 | |
| 137 | // catch iso-8859-8-i thing |
| 138 | if ( $charset == "iso-8859-8-i" ) |
| 139 | $charset = "iso-8859-8"; |
| 140 | |
| 141 | /* |
| 142 | * Recode converts html special characters automatically if you use |
| 143 | * 'charset..html' decoding. There is no documented way to put -d option |
| 144 | * into php recode function call. |
| 145 | */ |
| 146 | if ( $use_php_recode ) { |
| 147 | if ( $default_charset == "utf-8" ) { |
| 148 | // other charsets can be converted to utf-8 without loss. |
| 149 | // and output string is smaller |
| 150 | $string = recode_string($charset . "..utf-8",$string); |
| 151 | return htmlspecialchars($string); |
| 152 | } else { |
| 153 | $string = recode_string($charset . "..html",$string); |
| 154 | // recode does not convert single quote, htmlspecialchars does. |
| 155 | $string = str_replace("'", ''', $string); |
| 156 | return $string; |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | // iconv functions does not have html target and can be used only with utf-8 |
| 161 | if ( $use_php_iconv && $default_charset=='utf-8') { |
| 162 | $string = iconv($charset,$default_charset,$string); |
| 163 | return htmlspecialchars($string); |
| 164 | } |
| 165 | |
| 166 | // If we don't use recode and iconv, we'll do it old way. |
| 167 | |
| 168 | /* All HTML special characters are 7 bit and can be replaced first */ |
| 169 | |
| 170 | $string = htmlspecialchars ($string); |
| 171 | |
| 172 | /* controls cpu and memory intensive decoding cycles */ |
| 173 | if (! isset($aggressive_decoding) || $aggressive_decoding=="" ) { |
| 174 | $aggressive_decoding=false; } |
| 175 | |
| 176 | $decode=fixcharset($charset); |
| 177 | $decodefile=SM_PATH . 'functions/decode/' . $decode . '.php'; |
| 178 | if (file_exists($decodefile)) { |
| 179 | include_once($decodefile); |
| 180 | $ret = call_user_func('charset_decode_'.$decode, $string); |
| 181 | } else { |
| 182 | $ret = $string; |
| 183 | } |
| 184 | return( $ret ); |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Converts html string to given charset |
| 189 | * @since 1.5.1 and 1.4.4 |
| 190 | * @param string $string |
| 191 | * @param string $charset |
| 192 | * @param boolean $htmlencode keep htmlspecialchars encoding |
| 193 | * @param string |
| 194 | */ |
| 195 | function charset_encode($string,$charset,$htmlencode=true) { |
| 196 | global $default_charset; |
| 197 | |
| 198 | $encode=fixcharset($charset); |
| 199 | $encodefile=SM_PATH . 'functions/encode/' . $encode . '.php'; |
| 200 | if (file_exists($encodefile)) { |
| 201 | include_once($encodefile); |
| 202 | $ret = call_user_func('charset_encode_'.$encode, $string); |
| 203 | } elseif(file_exists(SM_PATH . 'functions/encode/us_ascii.php')) { |
| 204 | // function replaces all 8bit html entities with question marks. |
| 205 | // it is used when other encoding functions are unavailable |
| 206 | include_once(SM_PATH . 'functions/encode/us_ascii.php'); |
| 207 | $ret = charset_encode_us_ascii($string); |
| 208 | } else { |
| 209 | /** |
| 210 | * fix for yahoo users that remove all us-ascii related things |
| 211 | */ |
| 212 | $ret = $string; |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Undo html special chars, some places (like compose form) have |
| 217 | * own sanitizing functions and don't need html symbols. |
| 218 | * Undo chars only after encoding in order to prevent conversion of |
| 219 | * html entities in plain text emails. |
| 220 | */ |
| 221 | if (! $htmlencode ) { |
| 222 | $ret = str_replace(array('&','>','<','"'),array('&','>','<','"'),$ret); |
| 223 | } |
| 224 | return( $ret ); |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Combined decoding and encoding functions |
| 229 | * |
| 230 | * If conversion is done to charset different that utf-8, unsupported symbols |
| 231 | * will be replaced with question marks. |
| 232 | * @since 1.5.1 and 1.4.4 |
| 233 | * @param string $in_charset initial charset |
| 234 | * @param string $string string that has to be converted |
| 235 | * @param string $out_charset final charset |
| 236 | * @param boolean $htmlencode keep htmlspecialchars encoding |
| 237 | * @return string converted string |
| 238 | */ |
| 239 | function charset_convert($in_charset,$string,$out_charset,$htmlencode=true) { |
| 240 | $string=charset_decode($in_charset,$string,true); |
| 241 | $string=charset_encode($string,$out_charset,$htmlencode); |
| 242 | return $string; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * Makes charset name suitable for decoding cycles |
| 247 | * |
| 248 | * @since 1.5.0 and 1.4.4 |
| 249 | * @param string $charset Name of charset |
| 250 | * @return string $charset Adjusted name of charset |
| 251 | */ |
| 252 | function fixcharset($charset) { |
| 253 | /* remove minus and characters that might be used in paths from charset |
| 254 | * name in order to be able to use it in function names and include calls. |
| 255 | */ |
| 256 | $charset=preg_replace("/[-:.\/\\\]/",'_',$charset); |
| 257 | |
| 258 | // windows-125x and cp125x charsets |
| 259 | $charset=str_replace('windows_','cp',$charset); |
| 260 | |
| 261 | // ibm > cp |
| 262 | $charset=str_replace('ibm','cp',$charset); |
| 263 | |
| 264 | // iso-8859-8-i -> iso-8859-8 |
| 265 | // use same cycle until I'll find differences |
| 266 | $charset=str_replace('iso_8859_8_i','iso_8859_8',$charset); |
| 267 | |
| 268 | return $charset; |
| 269 | } |
| 270 | |
| 271 | /** |
| 272 | * Set up the language to be output |
| 273 | * if $do_search is true, then scan the browser information |
| 274 | * for a possible language that we know |
| 275 | * |
| 276 | * Function sets system locale environment (LC_ALL, LANG, LANGUAGE), |
| 277 | * gettext translation bindings and html header information. |
| 278 | * |
| 279 | * Function returns error codes, if there is some fatal error. |
| 280 | * 0 = no error, |
| 281 | * 1 = mbstring support is not present, |
| 282 | * 2 = mbstring support is not present, user's translation reverted to en_US. |
| 283 | * |
| 284 | * @param string $sm_language translation used by user's interface |
| 285 | * @param bool $do_search use browser's preferred language detection functions. Defaults to false. |
| 286 | * @param bool $default set $sm_language to $squirrelmail_default_language if language detection fails or language is not set. Defaults to false. |
| 287 | * @return int function execution error codes. |
| 288 | */ |
| 289 | function set_up_language($sm_language, $do_search = false, $default = false) { |
| 290 | |
| 291 | static $SetupAlready = 0; |
| 292 | global $use_gettext, $languages, |
| 293 | $squirrelmail_language, $squirrelmail_default_language, $default_charset, |
| 294 | $sm_notAlias, $username, $data_dir; |
| 295 | |
| 296 | if ($SetupAlready) { |
| 297 | return; |
| 298 | } |
| 299 | |
| 300 | $SetupAlready = TRUE; |
| 301 | sqgetGlobalVar('HTTP_ACCEPT_LANGUAGE', $accept_lang, SQ_SERVER); |
| 302 | |
| 303 | /** |
| 304 | * If function is asked to detect preferred language |
| 305 | * OR squirrelmail default language is set to empty string |
| 306 | * AND |
| 307 | * squirrelmail language ($sm_language) is empty string |
| 308 | * (not set in user's prefs and no cookie with language info) |
| 309 | * AND |
| 310 | * browser provides list of preferred languages |
| 311 | * THEN |
| 312 | * get preferred language from HTTP_ACCEPT_LANGUAGE header |
| 313 | */ |
| 314 | if (($do_search || empty($squirrelmail_default_language)) && |
| 315 | ! $sm_language && |
| 316 | isset($accept_lang)) { |
| 317 | // TODO: use more than one language, if first language is not available |
| 318 | // FIXME: function assumes that string contains two or more characters. |
| 319 | // FIXME: some languages use 5 chars |
| 320 | $sm_language = substr($accept_lang, 0, 2); |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | * If language preference is not set OR script asks to use default language |
| 325 | * AND |
| 326 | * default squirrelmail language is not set to empty string |
| 327 | * THEN |
| 328 | * use default squirrelmail language value from configuration. |
| 329 | */ |
| 330 | if ((!$sm_language||$default) && |
| 331 | ! empty($squirrelmail_default_language)) { |
| 332 | $squirrelmail_language = $squirrelmail_default_language; |
| 333 | $sm_language = $squirrelmail_default_language; |
| 334 | } |
| 335 | |
| 336 | /** provide failsafe language when detection fails */ |
| 337 | if (! $sm_language) $sm_language='en_US'; |
| 338 | |
| 339 | $sm_notAlias = $sm_language; |
| 340 | |
| 341 | // Catching removed translation |
| 342 | // System reverts to English translation if user prefs contain translation |
| 343 | // that is not available in $languages array |
| 344 | if (!isset($languages[$sm_notAlias])) { |
| 345 | $sm_notAlias="en_US"; |
| 346 | } |
| 347 | |
| 348 | while (isset($languages[$sm_notAlias]['ALIAS'])) { |
| 349 | $sm_notAlias = $languages[$sm_notAlias]['ALIAS']; |
| 350 | } |
| 351 | |
| 352 | if ( isset($sm_language) && |
| 353 | $use_gettext && |
| 354 | $sm_language != '' && |
| 355 | isset($languages[$sm_notAlias]['CHARSET']) ) { |
| 356 | sq_bindtextdomain( 'squirrelmail', SM_PATH . 'locale/' ); |
| 357 | sq_textdomain( 'squirrelmail' ); |
| 358 | |
| 359 | // set codeset in order to avoid gettext charset conversions |
| 360 | if (function_exists('bind_textdomain_codeset')) { |
| 361 | // Japanese translation uses different internal charset |
| 362 | if ($sm_notAlias == 'ja_JP') { |
| 363 | bind_textdomain_codeset ('squirrelmail', 'EUC-JP'); |
| 364 | } else { |
| 365 | bind_textdomain_codeset ('squirrelmail', $languages[$sm_notAlias]['CHARSET'] ); |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | // Use LOCALE key, if it is set. |
| 370 | if (isset($languages[$sm_notAlias]['LOCALE'])){ |
| 371 | $longlocale=$languages[$sm_notAlias]['LOCALE']; |
| 372 | } else { |
| 373 | $longlocale=$sm_notAlias; |
| 374 | } |
| 375 | |
| 376 | // try setting locale |
| 377 | $retlocale=sq_setlocale(LC_ALL, $longlocale); |
| 378 | |
| 379 | // check if locale is set and assign that locale to $longlocale |
| 380 | // in order to use it in putenv calls. |
| 381 | if (! is_bool($retlocale)) { |
| 382 | $longlocale=$retlocale; |
| 383 | } elseif (is_array($longlocale)) { |
| 384 | // setting of all locales failed. |
| 385 | // we need string instead of array used in LOCALE key. |
| 386 | $longlocale=$sm_notAlias; |
| 387 | } |
| 388 | |
| 389 | if ( !((bool)ini_get('safe_mode')) && |
| 390 | getenv( 'LC_ALL' ) != $longlocale ) { |
| 391 | putenv( "LC_ALL=$longlocale" ); |
| 392 | putenv( "LANG=$longlocale" ); |
| 393 | putenv( "LANGUAGE=$longlocale" ); |
| 394 | putenv( "LC_NUMERIC=C" ); |
| 395 | if ($sm_notAlias=='tr_TR') putenv( "LC_CTYPE=C" ); |
| 396 | } |
| 397 | // Workaround for plugins that use numbers with floating point |
| 398 | // It might be removed if plugins use correct decimal delimiters |
| 399 | // according to locale settings. |
| 400 | setlocale(LC_NUMERIC, 'C'); |
| 401 | // Workaround for specific Turkish strtolower/strtoupper rules. |
| 402 | // Many functions expect English conversion rules. |
| 403 | if ($sm_notAlias=='tr_TR') setlocale(LC_CTYPE,'C'); |
| 404 | |
| 405 | // Set text direction/alignment variables |
| 406 | // These don't appear to be used... are they safe to remove? |
| 407 | if (isset($languages[$sm_notAlias]['DIR']) && |
| 408 | $languages[$sm_notAlias]['DIR'] == 'rtl') { |
| 409 | /** |
| 410 | * Text direction |
| 411 | * @global string $text_direction |
| 412 | */ |
| 413 | $text_direction='rtl'; |
| 414 | /** |
| 415 | * Left alignment |
| 416 | * @global string $left_align |
| 417 | */ |
| 418 | $left_align='right'; |
| 419 | /** |
| 420 | * Right alignment |
| 421 | * @global string $right_align |
| 422 | */ |
| 423 | $right_align='left'; |
| 424 | } else { |
| 425 | $text_direction='ltr'; |
| 426 | $left_align='left'; |
| 427 | $right_align='right'; |
| 428 | } |
| 429 | |
| 430 | $squirrelmail_language = $sm_notAlias; |
| 431 | if ($squirrelmail_language == 'ja_JP') { |
| 432 | header ('Content-Type: text/html; charset=EUC-JP'); |
| 433 | if (!function_exists('mb_internal_encoding')) { |
| 434 | // Error messages can't be displayed here |
| 435 | $error = 1; |
| 436 | // Revert to English if possible. |
| 437 | if (function_exists('setPref') && $username!='' && $data_dir!="") { |
| 438 | setPref($data_dir, $username, 'language', "en_US"); |
| 439 | $error = 2; |
| 440 | } |
| 441 | // stop further execution in order not to get php errors on mb_internal_encoding(). |
| 442 | return $error; |
| 443 | } |
| 444 | if (function_exists('mb_language')) { |
| 445 | mb_language('Japanese'); |
| 446 | } |
| 447 | mb_internal_encoding('EUC-JP'); |
| 448 | mb_http_output('pass'); |
| 449 | } elseif ($squirrelmail_language == 'en_US') { |
| 450 | header( 'Content-Type: text/html; charset=' . $default_charset ); |
| 451 | } else { |
| 452 | header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] ); |
| 453 | } |
| 454 | /** |
| 455 | * mbstring.func_overload fix (#929644). |
| 456 | * |
| 457 | * php mbstring extension can replace standard string functions with their multibyte |
| 458 | * equivalents. See http://www.php.net/ref.mbstring#mbstring.overload. This feature |
| 459 | * was added in php v.4.2.0 |
| 460 | * |
| 461 | * Some SquirrelMail functions work with 8bit strings in bytes. If interface is forced |
| 462 | * to use mbstring functions and mbstring internal encoding is set to multibyte charset, |
| 463 | * interface can't trust regular string functions. Due to mbstring overloading design |
| 464 | * limits php scripts can't control this setting. |
| 465 | * |
| 466 | * This hack should fix some issues related to 8bit strings in passwords. Correct fix is |
| 467 | * to disable mbstring overloading. Japanese translation uses different internal encoding. |
| 468 | */ |
| 469 | if ($squirrelmail_language != 'ja_JP' && |
| 470 | function_exists('mb_internal_encoding') && |
| 471 | check_php_version(4,2,0) && |
| 472 | (int)ini_get('mbstring.func_overload')!=0) { |
| 473 | mb_internal_encoding('pass'); |
| 474 | } |
| 475 | } |
| 476 | return 0; |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * Sets default_charset variable according to the one that is used by user's translations. |
| 481 | * |
| 482 | * Function changes global $default_charset variable in order to be sure, that it |
| 483 | * contains charset used by user's translation. Sanity of $squirrelmail_language |
| 484 | * and $default_charset combination is also tested. |
| 485 | * |
| 486 | * There can be a $default_charset setting in the |
| 487 | * config.php file, but the user may have a different language |
| 488 | * selected for a user interface. This function checks the |
| 489 | * language selected by the user and tags the outgoing messages |
| 490 | * with the appropriate charset corresponding to the language |
| 491 | * selection. This is "more right" (tm), than just stamping the |
| 492 | * message blindly with the system-wide $default_charset. |
| 493 | */ |
| 494 | function set_my_charset(){ |
| 495 | global $data_dir, $username, $default_charset, $languages, $squirrelmail_language; |
| 496 | |
| 497 | $my_language = getPref($data_dir, $username, 'language'); |
| 498 | if (!$my_language) { |
| 499 | $my_language = $squirrelmail_language ; |
| 500 | } |
| 501 | // Catch removed translation |
| 502 | if (!isset($languages[$my_language])) { |
| 503 | $my_language="en_US"; |
| 504 | } |
| 505 | while (isset($languages[$my_language]['ALIAS'])) { |
| 506 | $my_language = $languages[$my_language]['ALIAS']; |
| 507 | } |
| 508 | $my_charset = $languages[$my_language]['CHARSET']; |
| 509 | if ($my_language!='en_US') { |
| 510 | $default_charset = $my_charset; |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | /** |
| 515 | * Replaces non-braking spaces inserted by some browsers with regular space |
| 516 | * |
| 517 | * This function can be used to replace non-braking space symbols |
| 518 | * that are inserted in forms by some browsers instead of normal |
| 519 | * space symbol. |
| 520 | * |
| 521 | * @param string $string Text that needs to be cleaned |
| 522 | * @param string $charset Charset used in text |
| 523 | * @return string Cleaned text |
| 524 | */ |
| 525 | function cleanup_nbsp($string,$charset) { |
| 526 | |
| 527 | // reduce number of case statements |
| 528 | if (stristr('iso-8859-',substr($charset,0,9))){ |
| 529 | $output_charset="iso-8859-x"; |
| 530 | } |
| 531 | if (stristr('windows-125',substr($charset,0,11))){ |
| 532 | $output_charset="cp125x"; |
| 533 | } |
| 534 | if (stristr('koi8',substr($charset,0,4))){ |
| 535 | $output_charset="koi8-x"; |
| 536 | } |
| 537 | if (! isset($output_charset)){ |
| 538 | $output_charset=strtolower($charset); |
| 539 | } |
| 540 | |
| 541 | // where is non-braking space symbol |
| 542 | switch($output_charset): |
| 543 | case "iso-8859-x": |
| 544 | case "cp125x": |
| 545 | case "iso-2022-jp": |
| 546 | $nbsp="\xA0"; |
| 547 | break; |
| 548 | case "koi8-x": |
| 549 | $nbsp="\x9A"; |
| 550 | break; |
| 551 | case "utf-8": |
| 552 | $nbsp="\xC2\xA0"; |
| 553 | break; |
| 554 | default: |
| 555 | // don't change string if charset is unmatched |
| 556 | return $string; |
| 557 | endswitch; |
| 558 | |
| 559 | // return space instead of non-braking space. |
| 560 | return str_replace($nbsp,' ',$string); |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * Function informs if it is safe to convert given charset to the one that is used by user. |
| 565 | * |
| 566 | * It is safe to use conversion only if user uses utf-8 encoding and when |
| 567 | * converted charset is similar to the one that is used by user. |
| 568 | * |
| 569 | * @param string $input_charset Charset of text that needs to be converted |
| 570 | * @return bool is it possible to convert to user's charset |
| 571 | */ |
| 572 | function is_conversion_safe($input_charset) { |
| 573 | global $languages, $sm_notAlias, $default_charset, $lossy_encoding; |
| 574 | |
| 575 | if (isset($lossy_encoding) && $lossy_encoding ) |
| 576 | return true; |
| 577 | |
| 578 | // convert to lower case |
| 579 | $input_charset = strtolower($input_charset); |
| 580 | |
| 581 | // Is user's locale Unicode based ? |
| 582 | if ( $default_charset == "utf-8" ) { |
| 583 | return true; |
| 584 | } |
| 585 | |
| 586 | // Charsets that are similar |
| 587 | switch ($default_charset): |
| 588 | case "windows-1251": |
| 589 | if ( $input_charset == "iso-8859-5" || |
| 590 | $input_charset == "koi8-r" || |
| 591 | $input_charset == "koi8-u" ) { |
| 592 | return true; |
| 593 | } else { |
| 594 | return false; |
| 595 | } |
| 596 | case "windows-1257": |
| 597 | if ( $input_charset == "iso-8859-13" || |
| 598 | $input_charset == "iso-8859-4" ) { |
| 599 | return true; |
| 600 | } else { |
| 601 | return false; |
| 602 | } |
| 603 | case "iso-8859-4": |
| 604 | if ( $input_charset == "iso-8859-13" || |
| 605 | $input_charset == "windows-1257" ) { |
| 606 | return true; |
| 607 | } else { |
| 608 | return false; |
| 609 | } |
| 610 | case "iso-8859-5": |
| 611 | if ( $input_charset == "windows-1251" || |
| 612 | $input_charset == "koi8-r" || |
| 613 | $input_charset == "koi8-u" ) { |
| 614 | return true; |
| 615 | } else { |
| 616 | return false; |
| 617 | } |
| 618 | case "iso-8859-13": |
| 619 | if ( $input_charset == "iso-8859-4" || |
| 620 | $input_charset == "windows-1257" ) { |
| 621 | return true; |
| 622 | } else { |
| 623 | return false; |
| 624 | } |
| 625 | case "koi8-r": |
| 626 | if ( $input_charset == "windows-1251" || |
| 627 | $input_charset == "iso-8859-5" || |
| 628 | $input_charset == "koi8-u" ) { |
| 629 | return true; |
| 630 | } else { |
| 631 | return false; |
| 632 | } |
| 633 | case "koi8-u": |
| 634 | if ( $input_charset == "windows-1251" || |
| 635 | $input_charset == "iso-8859-5" || |
| 636 | $input_charset == "koi8-r" ) { |
| 637 | return true; |
| 638 | } else { |
| 639 | return false; |
| 640 | } |
| 641 | default: |
| 642 | return false; |
| 643 | endswitch; |
| 644 | } |
| 645 | |
| 646 | |
| 647 | /* ------------------------------ main --------------------------- */ |
| 648 | |
| 649 | global $squirrelmail_language, $languages, $use_gettext; |
| 650 | |
| 651 | if (! sqgetGlobalVar('squirrelmail_language',$squirrelmail_language,SQ_COOKIE)) { |
| 652 | $squirrelmail_language = ''; |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Array specifies the available translations. |
| 657 | * |
| 658 | * Structure of array: |
| 659 | * $languages['language']['variable'] = 'value' |
| 660 | * |
| 661 | * Possible 'variable' names: |
| 662 | * NAME - Translation name in English |
| 663 | * CHARSET - Encoding used by translation |
| 664 | * ALIAS - used when 'language' is only short name and 'value' should provide long language name |
| 665 | * ALTNAME - Native translation name. Any 8bit symbols must be html encoded. |
| 666 | * LOCALE - Full locale name (in xx_XX.charset format). It can use array with more than one locale name since 1.4.5 and 1.5.1 |
| 667 | * DIR - Text direction. Used to define Right-to-Left languages. Possible values 'rtl' or 'ltr'. If undefined - defaults to 'ltr' |
| 668 | * XTRA_CODE - translation uses special functions. See doc/i18n.txt |
| 669 | * |
| 670 | * Each 'language' definition requires NAME+CHARSET or ALIAS variables. |
| 671 | * |
| 672 | * @name $languages |
| 673 | * @global array $languages |
| 674 | */ |
| 675 | $languages['en_US']['NAME'] = 'English'; |
| 676 | $languages['en_US']['CHARSET'] = 'iso-8859-1'; |
| 677 | $languages['en_US']['LOCALE'] = 'en_US.ISO8859-1'; |
| 678 | $languages['en']['ALIAS'] = 'en_US'; |
| 679 | |
| 680 | /** |
| 681 | * Automatic translation loading from setup.php files. |
| 682 | * Solution for bug. 1240889. |
| 683 | * setup.php file can contain $languages array entries and XTRA_CODE functions. |
| 684 | */ |
| 685 | if (is_dir(SM_PATH . 'locale') && |
| 686 | is_readable(SM_PATH . 'locale')) { |
| 687 | $localedir = dir(SM_PATH . 'locale'); |
| 688 | while($lang_dir=$localedir->read()) { |
| 689 | // remove trailing slash, if present |
| 690 | if (substr($lang_dir,-1)=='/') { |
| 691 | $lang_dir = substr($lang_dir,0,-1); |
| 692 | } |
| 693 | if ($lang_dir != '..' && $lang_dir != '.' && $lang_dir != 'CVS' && |
| 694 | is_dir(SM_PATH.'locale/'.$lang_dir) && |
| 695 | file_exists(SM_PATH.'locale/'.$lang_dir.'/setup.php')) { |
| 696 | include_once(SM_PATH.'locale/'.$lang_dir.'/setup.php'); |
| 697 | } |
| 698 | } |
| 699 | $localedir->close(); |
| 700 | } |
| 701 | |
| 702 | /* Detect whether gettext is installed. */ |
| 703 | $gettext_flags = 0; |
| 704 | if (function_exists('_')) { |
| 705 | $gettext_flags += 1; |
| 706 | } |
| 707 | if (function_exists('bindtextdomain')) { |
| 708 | $gettext_flags += 2; |
| 709 | } |
| 710 | if (function_exists('textdomain')) { |
| 711 | $gettext_flags += 4; |
| 712 | } |
| 713 | if (function_exists('ngettext')) { |
| 714 | $gettext_flags += 8; |
| 715 | } |
| 716 | |
| 717 | /* If gettext is fully loaded, cool */ |
| 718 | if ($gettext_flags == 15) { |
| 719 | $use_gettext = true; |
| 720 | } |
| 721 | |
| 722 | /* If ngettext support is missing, load it */ |
| 723 | elseif ($gettext_flags == 7) { |
| 724 | $use_gettext = true; |
| 725 | // load internal ngettext functions |
| 726 | include_once(SM_PATH . 'class/l10n.class.php'); |
| 727 | include_once(SM_PATH . 'functions/ngettext.php'); |
| 728 | } |
| 729 | |
| 730 | /* If we can fake gettext, try that */ |
| 731 | elseif ($gettext_flags == 0) { |
| 732 | $use_gettext = true; |
| 733 | include_once(SM_PATH . 'functions/gettext.php'); |
| 734 | } else { |
| 735 | /* Uh-ho. A weird install */ |
| 736 | if (! $gettext_flags & 1) { |
| 737 | /** |
| 738 | * Function is used as replacement in broken installs |
| 739 | * @ignore |
| 740 | */ |
| 741 | function _($str) { |
| 742 | return $str; |
| 743 | } |
| 744 | } |
| 745 | if (! $gettext_flags & 2) { |
| 746 | /** |
| 747 | * Function is used as replacement in broken installs |
| 748 | * @ignore |
| 749 | */ |
| 750 | function bindtextdomain() { |
| 751 | return; |
| 752 | } |
| 753 | } |
| 754 | if (! $gettext_flags & 4) { |
| 755 | /** |
| 756 | * Function is used as replacemet in broken installs |
| 757 | * @ignore |
| 758 | */ |
| 759 | function textdomain() { |
| 760 | return; |
| 761 | } |
| 762 | } |
| 763 | if (! $gettext_flags & 8) { |
| 764 | /** |
| 765 | * Function is used as replacemet in broken installs |
| 766 | * @ignore |
| 767 | */ |
| 768 | function ngettext($str,$str2,$number) { |
| 769 | if ($number>1) { |
| 770 | return $str2; |
| 771 | } else { |
| 772 | return $str; |
| 773 | } |
| 774 | } |
| 775 | } |
| 776 | if (! function_exists('dgettext')) { |
| 777 | /** |
| 778 | * Replacement for broken setups. |
| 779 | * @ignore |
| 780 | */ |
| 781 | function dgettext($domain,$str) { |
| 782 | return $str; |
| 783 | } |
| 784 | } |
| 785 | if (! function_exists('dngettext')) { |
| 786 | /** |
| 787 | * Replacement for broken setups |
| 788 | * @ignore |
| 789 | */ |
| 790 | function dngettext($domain,$str1,$strn,$number) { |
| 791 | return ($number==1 ? $str1 : $strn); |
| 792 | } |
| 793 | } |
| 794 | } |
| 795 | ?> |