use C floating point
[squirrelmail.git] / functions / i18n.php
1 <?php
2 /**
3 * SquirrelMail internationalization functions
4 *
5 * Copyright (c) 1999-2004 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 * Converts string from given charset to charset, that can be displayed by user translation.
64 *
65 * Function by default returns html encoded strings, if translation uses different encoding.
66 * If Japanese translation is used - function returns string converted to euc-jp
67 * If iconv or recode functions are enabled and translation uses utf-8 - function returns utf-8 encoded string.
68 * If $charset is not supported - function returns unconverted string.
69 *
70 * sanitizing of html tags is also done by this function.
71 *
72 * @param string $charset
73 * @param string $string Text to be decoded
74 * @return string decoded string
75 */
76 function charset_decode ($charset, $string) {
77 global $languages, $squirrelmail_language, $default_charset;
78 global $use_php_recode, $use_php_iconv, $aggressive_decoding;
79
80 if (isset($languages[$squirrelmail_language]['XTRA_CODE']) &&
81 function_exists($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode')) {
82 $string = call_user_func($languages[$squirrelmail_language]['XTRA_CODE'] . '_decode', $string);
83 }
84
85 $charset = strtolower($charset);
86
87 set_my_charset();
88
89 // Variables that allow to use functions without function_exist() calls
90 if (! isset($use_php_recode) || $use_php_recode=="" ) {
91 $use_php_recode=false; }
92 if (! isset($use_php_iconv) || $use_php_iconv=="" ) {
93 $use_php_iconv=false; }
94
95 // Don't do conversion if charset is the same.
96 if ( $charset == strtolower($default_charset) )
97 return htmlspecialchars($string);
98
99 // catch iso-8859-8-i thing
100 if ( $charset == "iso-8859-8-i" )
101 $charset = "iso-8859-8";
102
103 /*
104 * Recode converts html special characters automatically if you use
105 * 'charset..html' decoding. There is no documented way to put -d option
106 * into php recode function call.
107 */
108 if ( $use_php_recode ) {
109 if ( $default_charset == "utf-8" ) {
110 // other charsets can be converted to utf-8 without loss.
111 // and output string is smaller
112 $string = recode_string($charset . "..utf-8",$string);
113 return htmlspecialchars($string);
114 } else {
115 $string = recode_string($charset . "..html",$string);
116 // recode does not convert single quote, htmlspecialchars does.
117 $string = str_replace("'", '&#039;', $string);
118 return $string;
119 }
120 }
121
122 // iconv functions does not have html target and can be used only with utf-8
123 if ( $use_php_iconv && $default_charset=='utf-8') {
124 $string = iconv($charset,$default_charset,$string);
125 return htmlspecialchars($string);
126 }
127
128 // If we don't use recode and iconv, we'll do it old way.
129
130 /* All HTML special characters are 7 bit and can be replaced first */
131
132 $string = htmlspecialchars ($string);
133
134 /* controls cpu and memory intensive decoding cycles */
135 if (! isset($aggressive_decoding) || $aggressive_decoding=="" ) {
136 $aggressive_decoding=false; }
137
138 $decode=fixcharset($charset);
139 $decodefile=SM_PATH . 'functions/decode/' . $decode . '.php';
140 if (file_exists($decodefile)) {
141 include_once($decodefile);
142 $ret = call_user_func('charset_decode_'.$decode, $string);
143 } else {
144 $ret = $string;
145 }
146 return( $ret );
147 }
148
149 /**
150 * Converts html string to given charset
151 * @since 1.5.1
152 * @param string $string
153 * @param string $charset
154 * @param boolean $htmlencode keep htmlspecialchars encoding
155 * @param string
156 */
157 function charset_encode($string,$charset,$htmlencode=true) {
158 global $default_charset;
159
160 // Undo html special chars
161 if (! $htmlencode ) {
162 $string = str_replace(array('&amp;','&gt;','&lt;','&quot;'),array('&','>','<','"'),$string);
163 }
164
165 $encode=fixcharset($charset);
166 $encodefile=SM_PATH . 'functions/encode/' . $encode . '.php';
167 if (file_exists($encodefile)) {
168 include_once($encodefile);
169 $ret = call_user_func('charset_encode_'.$encode, $string);
170 } else {
171 include_once(SM_PATH . 'functions/encode/us_ascii.php');
172 $ret = charset_encode_us_ascii($string);
173 }
174 return( $ret );
175 }
176
177 /**
178 * Combined decoding and encoding functions
179 *
180 * If conversion is done to charset different that utf-8, unsupported symbols
181 * will be replaced with question marks.
182 * @since 1.5.1
183 * @param string $in_charset initial charset
184 * @param string $string string that has to be converted
185 * @param string $out_charset final charset
186 * @param boolean $htmlencode keep htmlspecialchars encoding
187 * @return string converted string
188 */
189 function charset_convert($in_charset,$string,$out_charset,$htmlencode=true) {
190 $string=charset_decode($in_charset,$string);
191 $string=charset_encode($string,$out_charset,$htmlencode);
192 return $string;
193 }
194
195 /**
196 * Makes charset name suitable for decoding cycles
197 *
198 * @since 1.5.0
199 * @param string $charset Name of charset
200 * @return string $charset Adjusted name of charset
201 */
202 function fixcharset($charset) {
203 // minus removed from function names
204 $charset=str_replace('-','_',$charset);
205
206 // windows-125x and cp125x charsets
207 $charset=str_replace('windows_','cp',$charset);
208
209 // ibm > cp
210 $charset=str_replace('ibm','cp',$charset);
211
212 // iso-8859-8-i -> iso-8859-8
213 // use same cycle until I'll find differences
214 $charset=str_replace('iso_8859_8_i','iso_8859_8',$charset);
215
216 return $charset;
217 }
218
219 /**
220 * Set up the language to be output
221 * if $do_search is true, then scan the browser information
222 * for a possible language that we know
223 *
224 * Function sets system locale environment (LC_ALL, LANG, LANGUAGE),
225 * gettext translation bindings and html header information.
226 *
227 * Function returns error codes, if there is some fatal error.
228 * 0 = no error,
229 * 1 = mbstring support is not present,
230 * 2 = mbstring support is not present, user's translation reverted to en_US.
231 *
232 * @param string $sm_language translation used by user's interface
233 * @param bool $do_search use browser's preferred language detection functions. Defaults to false.
234 * @param bool $default set $sm_language to $squirrelmail_default_language if language detection fails or language is not set. Defaults to false.
235 * @return int function execution error codes.
236 */
237 function set_up_language($sm_language, $do_search = false, $default = false) {
238
239 static $SetupAlready = 0;
240 global $use_gettext, $languages,
241 $squirrelmail_language, $squirrelmail_default_language, $default_charset,
242 $sm_notAlias, $username, $data_dir;
243
244 if ($SetupAlready) {
245 return;
246 }
247
248 $SetupAlready = TRUE;
249 sqgetGlobalVar('HTTP_ACCEPT_LANGUAGE', $accept_lang, SQ_SERVER);
250
251 if ($do_search && ! $sm_language && isset($accept_lang)) {
252 $sm_language = substr($accept_lang, 0, 2);
253 }
254
255 if ((!$sm_language||$default) && isset($squirrelmail_default_language)) {
256 $squirrelmail_language = $squirrelmail_default_language;
257 $sm_language = $squirrelmail_default_language;
258 }
259 $sm_notAlias = $sm_language;
260
261 // Catching removed translation
262 // System reverts to English translation if user prefs contain translation
263 // that is not available in $languages array
264 if (!isset($languages[$sm_notAlias])) {
265 $sm_notAlias="en_US";
266 }
267
268 while (isset($languages[$sm_notAlias]['ALIAS'])) {
269 $sm_notAlias = $languages[$sm_notAlias]['ALIAS'];
270 }
271
272 if ( isset($sm_language) &&
273 $use_gettext &&
274 $sm_language != '' &&
275 isset($languages[$sm_notAlias]['CHARSET']) ) {
276 sq_bindtextdomain( 'squirrelmail', SM_PATH . 'locale/' );
277 sq_textdomain( 'squirrelmail' );
278 if (function_exists('bind_textdomain_codeset')) {
279 if ($sm_notAlias == 'ja_JP') {
280 bind_textdomain_codeset ("squirrelmail", 'EUC-JP');
281 } else {
282 bind_textdomain_codeset ("squirrelmail", $languages[$sm_notAlias]['CHARSET'] );
283 }
284 }
285 if (isset($languages[$sm_notAlias]['LOCALE'])){
286 $longlocale=$languages[$sm_notAlias]['LOCALE'];
287 } else {
288 $longlocale=$sm_notAlias;
289 }
290 if ( !ini_get('safe_mode') &&
291 getenv( 'LC_ALL' ) != $longlocale ) {
292 putenv( "LC_ALL=$longlocale" );
293 putenv( "LANG=$longlocale" );
294 putenv( "LANGUAGE=$longlocale" );
295 putenv( "LC_NUMERIC=C" );
296 if ($sm_notAlias=='tr_TR') putenv( "LC_CTYPE=C" );
297 }
298 setlocale(LC_ALL, $longlocale);
299 // Workaround for plugins that use numbers with floating point
300 // It might be removed if plugins use correct decimal delimiters
301 // according to locale settings.
302 setlocale(LC_NUMERIC, 'C');
303 // Workaround for specific Turkish strtolower/strtoupper rules.
304 // Many functions expect English conversion rules.
305 if ($sm_notAlias=='tr_TR') setlocale(LC_CTYPE,'C');
306
307 // Set text direction/alignment variables
308 if (isset($languages[$sm_notAlias]['DIR']) &&
309 $languages[$sm_notAlias]['DIR'] == 'rtl') {
310 /**
311 * Text direction
312 * @global string $text_direction
313 */
314 $text_direction='rtl';
315 /**
316 * Left alignment
317 * @global string $left_align
318 */
319 $left_align='right';
320 /**
321 * Right alignment
322 * @global string $right_align
323 */
324 $right_align='left';
325 } else {
326 $text_direction='ltr';
327 $left_align='left';
328 $right_align='right';
329 }
330
331 $squirrelmail_language = $sm_notAlias;
332 if ($squirrelmail_language == 'ja_JP') {
333 header ('Content-Type: text/html; charset=EUC-JP');
334 if (!function_exists('mb_internal_encoding')) {
335 // Error messages can't be displayed here
336 $error = 1;
337 // Revert to English if possible.
338 if (function_exists('setPref') && $username!='' && $data_dir!="") {
339 setPref($data_dir, $username, 'language', "en_US");
340 $error = 2;
341 }
342 // stop further execution in order not to get php errors on mb_internal_encoding().
343 return $error;
344 }
345 if (function_exists('mb_language')) {
346 mb_language('Japanese');
347 }
348 mb_internal_encoding('EUC-JP');
349 mb_http_output('pass');
350 } elseif ($squirrelmail_language == 'en_US') {
351 header( 'Content-Type: text/html; charset=' . $default_charset );
352 } else {
353 header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] );
354 }
355 }
356 return 0;
357 }
358
359 /**
360 * Sets default_charset variable according to the one that is used by user's translations.
361 *
362 * Function changes global $default_charset variable in order to be sure, that it
363 * contains charset used by user's translation. Sanity of $squirrelmail_default_language
364 * and $default_charset combination provided in SquirrelMail config is also tested.
365 *
366 * There can be a $default_charset setting in the
367 * config.php file, but the user may have a different language
368 * selected for a user interface. This function checks the
369 * language selected by the user and tags the outgoing messages
370 * with the appropriate charset corresponding to the language
371 * selection. This is "more right" (tm), than just stamping the
372 * message blindly with the system-wide $default_charset.
373 */
374 function set_my_charset(){
375 global $data_dir, $username, $default_charset, $languages, $squirrelmail_default_language;
376
377 $my_language = getPref($data_dir, $username, 'language');
378 if (!$my_language) {
379 $my_language = $squirrelmail_default_language ;
380 }
381 // Catch removed translation
382 if (!isset($languages[$my_language])) {
383 $my_language="en_US";
384 }
385 while (isset($languages[$my_language]['ALIAS'])) {
386 $my_language = $languages[$my_language]['ALIAS'];
387 }
388 $my_charset = $languages[$my_language]['CHARSET'];
389 if ($my_language!='en_US') {
390 $default_charset = $my_charset;
391 }
392 }
393
394 /**************************
395 * Japanese extra functions
396 **************************/
397
398 /**
399 * Japanese decoding function
400 *
401 * converts string to euc-jp, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
402 * charset. Needs mbstring support in php.
403 * @param string $ret text, that has to be converted
404 * @return string converted string
405 * @since 1.5.1
406 */
407 function japanese_xtra_decode($ret) {
408 if (function_exists('mb_detect_encoding')) {
409 $detect_encoding = @mb_detect_encoding($ret);
410 if ($detect_encoding == 'JIS' ||
411 $detect_encoding == 'EUC-JP' ||
412 $detect_encoding == 'SJIS' ||
413 $detect_encoding == 'UTF-8') {
414
415 $ret = mb_convert_kana(mb_convert_encoding($ret, 'EUC-JP', 'AUTO'), "KV");
416 }
417 }
418 return $ret;
419 }
420
421 /**
422 * Japanese encoding function
423 *
424 * converts string to jis, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
425 * charset. Needs mbstring support in php.
426 * @param string $ret text, that has to be converted
427 * @return string converted text
428 * @since 1.5.1
429 */
430 function japanese_xtra_encode($ret) {
431 if (function_exists('mb_detect_encoding')) {
432 $detect_encoding = @mb_detect_encoding($ret);
433 if ($detect_encoding == 'JIS' ||
434 $detect_encoding == 'EUC-JP' ||
435 $detect_encoding == 'SJIS' ||
436 $detect_encoding == 'UTF-8') {
437
438 $ret = mb_convert_encoding(mb_convert_kana($ret, "KV"), 'JIS', 'AUTO');
439 }
440 }
441 return $ret;
442 }
443
444 /**
445 * Japanese header encoding function
446 *
447 * creates base64 encoded header in iso-2022-jp charset
448 * @param string $ret text, that has to be converted
449 * @return string mime base64 encoded string
450 * @since 1.5.1
451 */
452 function japanese_xtra_encodeheader($ret) {
453 if (function_exists('mb_detect_encoding')) {
454 $result = '';
455 if (strlen($ret) > 0) {
456 $tmpstr = mb_substr($ret, 0, 1);
457 $prevcsize = strlen($tmpstr);
458 for ($i = 1; $i < mb_strlen($ret); $i++) {
459 $tmp = mb_substr($ret, $i, 1);
460 if (strlen($tmp) == $prevcsize) {
461 $tmpstr .= $tmp;
462 } else {
463 if ($prevcsize == 1) {
464 $result .= $tmpstr;
465 } else {
466 $result .= str_replace(' ', '',
467 mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
468 }
469 $tmpstr = $tmp;
470 $prevcsize = strlen($tmp);
471 }
472 }
473 if (strlen($tmpstr)) {
474 if (strlen(mb_substr($tmpstr, 0, 1)) == 1)
475 $result .= $tmpstr;
476 else
477 $result .= str_replace(' ', '',
478 mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
479 }
480 }
481 $ret = $result;
482 }
483 return $ret;
484 }
485
486 /**
487 * Japanese header decoding function
488 *
489 * return human readable string from mime header. string is returned in euc-jp
490 * charset.
491 * @param string $ret header string
492 * @return string decoded header string
493 * @since 1.5.1
494 */
495 function japanese_xtra_decodeheader($ret) {
496 if (function_exists('mb_detect_encoding')) {
497 $ret = str_replace("\t", "", $ret);
498 if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $ret))
499 $ret = @mb_decode_mimeheader($ret);
500 $ret = @mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
501 }
502 return $ret;
503 }
504
505 /**
506 * Japanese downloaded filename processing function
507 *
508 * Returns shift-jis or euc-jp encoded file name
509 * @param string $ret string
510 * @param string $useragent browser
511 * @return string converted string
512 * @since 1.5.1
513 */
514 function japanese_xtra_downloadfilename($ret,$useragent) {
515 if (function_exists('mb_detect_encoding')) {
516 if (strstr($useragent, 'Windows') !== false ||
517 strstr($useragent, 'Mac_') !== false) {
518 $ret = mb_convert_encoding($ret, 'SJIS', 'AUTO');
519 } else {
520 $ret = mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
521 }
522 }
523 return $ret;
524 }
525
526 /**
527 * Japanese wordwrap function
528 *
529 * wraps text at set number of symbols
530 * @param string $ret text
531 * @param integer $wrap number of symbols per line
532 * @return string wrapped text
533 * @since 1.5.1
534 */
535 function japanese_xtra_wordwrap($ret,$wrap) {
536 if (function_exists('mb_detect_encoding')) {
537 $no_begin = "\x21\x25\x29\x2c\x2e\x3a\x3b\x3f\x5d\x7d\xa1\xf1\xa1\xeb\xa1" .
538 "\xc7\xa1\xc9\xa2\xf3\xa1\xec\xa1\xed\xa1\xee\xa1\xa2\xa1\xa3\xa1\xb9" .
539 "\xa1\xd3\xa1\xd5\xa1\xd7\xa1\xd9\xa1\xdb\xa1\xcd\xa4\xa1\xa4\xa3\xa4" .
540 "\xa5\xa4\xa7\xa4\xa9\xa4\xc3\xa4\xe3\xa4\xe5\xa4\xe7\xa4\xee\xa1\xab" .
541 "\xa1\xac\xa1\xb5\xa1\xb6\xa5\xa1\xa5\xa3\xa5\xa5\xa5\xa7\xa5\xa9\xa5" .
542 "\xc3\xa5\xe3\xa5\xe5\xa5\xe7\xa5\xee\xa5\xf5\xa5\xf6\xa1\xa6\xa1\xbc" .
543 "\xa1\xb3\xa1\xb4\xa1\xaa\xa1\xf3\xa1\xcb\xa1\xa4\xa1\xa5\xa1\xa7\xa1" .
544 "\xa8\xa1\xa9\xa1\xcf\xa1\xd1";
545 $no_end = "\x5c\x24\x28\x5b\x7b\xa1\xf2\x5c\xa1\xc6\xa1\xc8\xa1\xd2\xa1" .
546 "\xd4\xa1\xd6\xa1\xd8\xa1\xda\xa1\xcc\xa1\xf0\xa1\xca\xa1\xce\xa1\xd0\xa1\xef";
547
548 if (strlen($ret) >= $wrap &&
549 substr($ret, 0, 1) != '>' &&
550 strpos($ret, 'http://') === FALSE &&
551 strpos($ret, 'https://') === FALSE &&
552 strpos($ret, 'ftp://') === FALSE) {
553
554 $ret = mb_convert_kana($ret, "KV");
555
556 $line_new = '';
557 $ptr = 0;
558
559 while ($ptr < strlen($ret) - 1) {
560 $l = mb_strcut($ret, $ptr, $wrap);
561 $ptr += strlen($l);
562 $tmp = $l;
563
564 $l = mb_strcut($ret, $ptr, 2);
565 while (strlen($l) != 0 && mb_strpos($no_begin, $l) !== FALSE ) {
566 $tmp .= $l;
567 $ptr += strlen($l);
568 $l = mb_strcut($ret, $ptr, 1);
569 }
570 $line_new .= $tmp;
571 if ($ptr < strlen($ret) - 1)
572 $line_new .= "\n";
573 }
574 $ret = $line_new;
575 }
576 }
577 return $ret;
578 }
579
580 /**
581 * Japanese imap folder name encoding function
582 *
583 * converts folder name from euc-jp to utf7-imap
584 * @param string $ret folder name
585 * @return string converted folder name
586 * @since 1.5.1
587 */
588 function japanese_xtra_utf7_imap_encode($ret){
589 if (function_exists('mb_detect_encoding')) {
590 $ret = mb_convert_encoding($ret, 'UTF7-IMAP', 'EUC-JP');
591 }
592 return $ret;
593 }
594
595 /**
596 * Japanese imap folder name decoding function
597 *
598 * converts folder name from utf7-imap to euc-jp.
599 * @param string $ret folder name in utf7-imap
600 * @return string converted folder name
601 * @since 1.5.1
602 */
603 function japanese_xtra_utf7_imap_decode($ret) {
604 if (function_exists('mb_detect_encoding')) {
605 $ret = mb_convert_encoding($ret, 'EUC-JP', 'UTF7-IMAP');
606 }
607 return $ret;
608 }
609
610 /**
611 * Japanese string trimming function
612 *
613 * trims string to defined number of symbols
614 * @param string $ret string
615 * @param integer $width number of symbols
616 * @return string trimmed string
617 * @since 1.5.1
618 */
619 function japanese_xtra_strimwidth($ret,$width) {
620 if (function_exists('mb_detect_encoding')) {
621 $ret = mb_strimwidth($ret, 0, $width, '...');
622 }
623 return $ret;
624 }
625
626 /********************************
627 * Korean charset extra functions
628 ********************************/
629
630 /**
631 * Korean downloaded filename processing functions
632 *
633 * @param string default return value
634 * @return string
635 * @since 1.5.1
636 */
637 function korean_xtra_downloadfilename($ret) {
638 $ret = str_replace("\x0D\x0A", '', $ret); /* Hanmail's CR/LF Clear */
639 for ($i=0;$i<strlen($ret);$i++) {
640 if ($ret[$i] >= "\xA1" && $ret[$i] <= "\xFE") { /* 0xA1 - 0XFE are Valid */
641 $i++;
642 continue;
643 } else if (($ret[$i] >= 'a' && $ret[$i] <= 'z') || /* From Original ereg_replace in download.php */
644 ($ret[$i] >= 'A' && $ret[$i] <= 'Z') ||
645 ($ret[$i] == '.') || ($ret[$i] == '-')) {
646 continue;
647 } else {
648 $ret[$i] = '_';
649 }
650 }
651 return $ret;
652 }
653
654 /**
655 * Replaces non-braking spaces inserted by some browsers with regular space
656 *
657 * This function can be used to replace non-braking space symbols
658 * that are inserted in forms by some browsers instead of normal
659 * space symbol.
660 *
661 * @param string $string Text that needs to be cleaned
662 * @param string $charset Charset used in text
663 * @return string Cleaned text
664 */
665 function cleanup_nbsp($string,$charset) {
666
667 // reduce number of case statements
668 if (stristr('iso-8859-',substr($charset,0,9))){
669 $output_charset="iso-8859-x";
670 }
671 if (stristr('windows-125',substr($charset,0,11))){
672 $output_charset="cp125x";
673 }
674 if (stristr('koi8',substr($charset,0,4))){
675 $output_charset="koi8-x";
676 }
677 if (! isset($output_charset)){
678 $output_charset=strtolower($charset);
679 }
680
681 // where is non-braking space symbol
682 switch($output_charset):
683 case "iso-8859-x":
684 case "cp125x":
685 case "iso-2022-jp":
686 $nbsp="\xA0";
687 break;
688 case "koi8-x":
689 $nbsp="\x9A";
690 break;
691 case "utf-8":
692 $nbsp="\xC2\xA0";
693 break;
694 default:
695 // don't change string if charset is unmatched
696 return $string;
697 endswitch;
698
699 // return space instead of non-braking space.
700 return str_replace($nbsp,' ',$string);
701 }
702
703 /**
704 * Function informs if it is safe to convert given charset to the one that is used by user.
705 *
706 * It is safe to use conversion only if user uses utf-8 encoding and when
707 * converted charset is similar to the one that is used by user.
708 *
709 * @param string $input_charset Charset of text that needs to be converted
710 * @return bool is it possible to convert to user's charset
711 */
712 function is_conversion_safe($input_charset) {
713 global $languages, $sm_notAlias, $default_charset, $lossy_encoding;
714
715 if (isset($lossy_encoding) && $lossy_encoding )
716 return true;
717
718 // convert to lower case
719 $input_charset = strtolower($input_charset);
720
721 // Is user's locale Unicode based ?
722 if ( $default_charset == "utf-8" ) {
723 return true;
724 }
725
726 // Charsets that are similar
727 switch ($default_charset):
728 case "windows-1251":
729 if ( $input_charset == "iso-8859-5" ||
730 $input_charset == "koi8-r" ||
731 $input_charset == "koi8-u" ) {
732 return true;
733 } else {
734 return false;
735 }
736 case "windows-1257":
737 if ( $input_charset == "iso-8859-13" ||
738 $input_charset == "iso-8859-4" ) {
739 return true;
740 } else {
741 return false;
742 }
743 case "iso-8859-4":
744 if ( $input_charset == "iso-8859-13" ||
745 $input_charset == "windows-1257" ) {
746 return true;
747 } else {
748 return false;
749 }
750 case "iso-8859-5":
751 if ( $input_charset == "windows-1251" ||
752 $input_charset == "koi8-r" ||
753 $input_charset == "koi8-u" ) {
754 return true;
755 } else {
756 return false;
757 }
758 case "iso-8859-13":
759 if ( $input_charset == "iso-8859-4" ||
760 $input_charset == "windows-1257" ) {
761 return true;
762 } else {
763 return false;
764 }
765 case "koi8-r":
766 if ( $input_charset == "windows-1251" ||
767 $input_charset == "iso-8859-5" ||
768 $input_charset == "koi8-u" ) {
769 return true;
770 } else {
771 return false;
772 }
773 case "koi8-u":
774 if ( $input_charset == "windows-1251" ||
775 $input_charset == "iso-8859-5" ||
776 $input_charset == "koi8-r" ) {
777 return true;
778 } else {
779 return false;
780 }
781 default:
782 return false;
783 endswitch;
784 }
785
786
787 /* ------------------------------ main --------------------------- */
788
789 global $squirrelmail_language, $languages, $use_gettext;
790
791 if (! isset($squirrelmail_language)) {
792 $squirrelmail_language = '';
793 }
794
795 /**
796 * Array specifies the available translations.
797 *
798 * Structure of array:
799 * $languages['language']['variable'] = 'value'
800 *
801 * Possible 'variable' names:
802 * NAME - Translation name in English
803 * CHARSET - Encoding used by translation
804 * ALIAS - used when 'language' is only short name and 'value' should provide long language name
805 * ALTNAME - Native translation name. Any 8bit symbols must be html encoded.
806 * LOCALE - Full locale name (in xx_XX.charset format)
807 * DIR - Text direction. Used to define Right-to-Left languages. Possible values 'rtl' or 'ltr'. If undefined - defaults to 'ltr'
808 * XTRA_CODE - translation uses special functions. See doc/i18n.txt
809 *
810 * Each 'language' definition requires NAME+CHARSET or ALIAS variables.
811 *
812 * @name $languages
813 * @global array $languages
814 */
815 $languages['bg_BG']['NAME'] = 'Bulgarian';
816 $languages['bg_BG']['ALTNAME'] = '&#1041;&#1098;&#1083;&#1075;&#1072;&#1088;&#1089;&#1082;&#1080;';
817 $languages['bg_BG']['CHARSET'] = 'windows-1251';
818 $languages['bg_BG']['LOCALE'] = 'bg_BG.CP1251';
819 $languages['bg']['ALIAS'] = 'bg_BG';
820
821 $languages['bn_IN']['NAME'] = 'Bengali';
822 $languages['bn_IN']['CHARSET'] = 'utf-8';
823 $languages['bn_IN']['LOCALE'] = 'bn_IN.UTF-8';
824 $languages['bn']['ALIAS'] = 'bn_IN';
825
826 $languages['ca_ES']['NAME'] = 'Catalan';
827 $languages['ca_ES']['CHARSET'] = 'iso-8859-1';
828 $languages['ca_ES']['LOCALE'] = 'ca_ES.ISO8859-1';
829 $languages['ca']['ALIAS'] = 'ca_ES';
830
831 $languages['cs_CZ']['NAME'] = 'Czech';
832 $languages['cs_CZ']['ALTNAME'] = '&#268;e&scaron;tina';
833 $languages['cs_CZ']['CHARSET'] = 'iso-8859-2';
834 $languages['cs_CZ']['LOCALE'] = 'cs_CZ.ISO8859-2';
835 $languages['cs']['ALIAS'] = 'cs_CZ';
836
837 $languages['cy_GB']['NAME'] = 'Welsh';
838 $languages['cy_GB']['ALTNAME'] = 'Cymraeg';
839 $languages['cy_GB']['CHARSET'] = 'iso-8859-1';
840 $languages['cy_GB']['LOCALE'] = 'cy_GB.ISO8859-1';
841 $languages['cy']['ALIAS'] = 'cy_GB';
842
843 // Danish locale is da_DK.
844 $languages['da_DK']['NAME'] = 'Danish';
845 $languages['da_DK']['ALTNAME'] = 'Dansk';
846 $languages['da_DK']['CHARSET'] = 'iso-8859-1';
847 $languages['da_DK']['LOCALE'] = 'da_DK.ISO8859-1';
848 $languages['da']['ALIAS'] = 'da_DK';
849
850 $languages['de_DE']['NAME'] = 'German';
851 $languages['de_DE']['ALTNAME'] = 'Deutsch';
852 $languages['de_DE']['CHARSET'] = 'iso-8859-1';
853 $languages['de_DE']['LOCALE'] = 'de_DE.ISO8859-1';
854 $languages['de']['ALIAS'] = 'de_DE';
855
856 $languages['el_GR']['NAME'] = 'Greek';
857 $languages['el_GR']['ALTNAME'] = '&Epsilon;&lambda;&lambda;&eta;&nu;&iota;&kappa;&#940;';
858 $languages['el_GR']['CHARSET'] = 'iso-8859-7';
859 $languages['el_GR']['LOCALE'] = 'el_GR.ISO8859-7';
860 $languages['el']['ALIAS'] = 'el_GR';
861
862 $languages['en_GB']['NAME'] = 'British';
863 $languages['en_GB']['CHARSET'] = 'iso-8859-15';
864 $languages['en_GB']['LOCALE'] = 'en_GB.ISO8859-15';
865
866 $languages['en_US']['NAME'] = 'English';
867 $languages['en_US']['CHARSET'] = 'iso-8859-1';
868 $languages['en_US']['LOCALE'] = 'en_US.ISO8859-1';
869 $languages['en']['ALIAS'] = 'en_US';
870
871 $languages['es_ES']['NAME'] = 'Spanish';
872 $languages['es_ES']['ALTNAME'] = 'Espa&ntilde;ol';
873 $languages['es_ES']['CHARSET'] = 'iso-8859-1';
874 $languages['es_ES']['LOCALE'] = 'es_ES.ISO8859-1';
875 $languages['es']['ALIAS'] = 'es_ES';
876
877 $languages['et_EE']['NAME'] = 'Estonian';
878 $languages['et_EE']['CHARSET'] = 'iso-8859-15';
879 $languages['et_EE']['LOCALE'] = 'et_EE.ISO8859-15';
880 $languages['et']['ALIAS'] = 'et_EE';
881
882 $languages['eu_ES']['NAME'] = 'Basque';
883 $languages['eu_ES']['CHARSET'] = 'iso-8859-1';
884 $languages['eu_ES']['LOCALE'] = 'eu_ES.ISO8859-1';
885 $languages['eu']['ALIAS'] = 'eu_ES';
886
887 $languages['fo_FO']['NAME'] = 'Faroese';
888 $languages['fo_FO']['CHARSET'] = 'iso-8859-1';
889 $languages['fo_FO']['LOCALE'] = 'fo_FO.ISO8859-1';
890 $languages['fo']['ALIAS'] = 'fo_FO';
891
892 $languages['fi_FI']['NAME'] = 'Finnish';
893 $languages['fi_FI']['ALTNAME'] = 'Suomi';
894 $languages['fi_FI']['CHARSET'] = 'iso-8859-1';
895 $languages['fi_FI']['LOCALE'] = 'fi_FI.ISO8859-1';
896 $languages['fi']['ALIAS'] = 'fi_FI';
897
898 $languages['fr_FR']['NAME'] = 'French';
899 $languages['fr_FR']['ALTNAME'] = 'Fran&#231;ais';
900 $languages['fr_FR']['CHARSET'] = 'iso-8859-1';
901 $languages['fr_FR']['LOCALE'] = 'fr_FR.ISO8859-1';
902 $languages['fr']['ALIAS'] = 'fr_FR';
903
904 $languages['hr_HR']['NAME'] = 'Croatian';
905 $languages['hr_HR']['CHARSET'] = 'iso-8859-2';
906 $languages['hr_HR']['LOCALE'] = 'hr_HR.ISO8859-2';
907 $languages['hr']['ALIAS'] = 'hr_HR';
908
909 $languages['hu_HU']['NAME'] = 'Hungarian';
910 $languages['hu_HU']['ALTNAME'] = 'Magyar';
911 $languages['hu_HU']['CHARSET'] = 'iso-8859-2';
912 $languages['hu_HU']['LOCALE'] = 'hu_HU.ISO8859-2';
913 $languages['hu']['ALIAS'] = 'hu_HU';
914
915 $languages['id_ID']['NAME'] = 'Indonesian';
916 $languages['id_ID']['ALTNAME'] = 'Bahasa Indonesia';
917 $languages['id_ID']['CHARSET'] = 'iso-8859-1';
918 $languages['id_ID']['LOCALE'] = 'id_ID.ISO8859-1';
919 $languages['id']['ALIAS'] = 'id_ID';
920
921 $languages['is_IS']['NAME'] = 'Icelandic';
922 $languages['is_IS']['ALTNAME'] = '&Iacute;slenska';
923 $languages['is_IS']['CHARSET'] = 'iso-8859-1';
924 $languages['is_IS']['LOCALE'] = 'is_IS.ISO8859-1';
925 $languages['is']['ALIAS'] = 'is_IS';
926
927 $languages['it_IT']['NAME'] = 'Italian';
928 $languages['it_IT']['CHARSET'] = 'iso-8859-1';
929 $languages['it_IT']['LOCALE'] = 'it_IT.ISO8859-1';
930 $languages['it']['ALIAS'] = 'it_IT';
931
932 $languages['ja_JP']['NAME'] = 'Japanese';
933 $languages['ja_JP']['ALTNAME'] = '&#26085;&#26412;&#35486;';
934 $languages['ja_JP']['CHARSET'] = 'iso-2022-jp';
935 $languages['ja_JP']['LOCALE'] = 'ja_JP.EUC-JP';
936 $languages['ja_JP']['XTRA_CODE'] = 'japanese_xtra';
937 $languages['ja']['ALIAS'] = 'ja_JP';
938
939 $languages['ko_KR']['NAME'] = 'Korean';
940 $languages['ko_KR']['CHARSET'] = 'euc-KR';
941 $languages['ko_KR']['LOCALE'] = 'ko_KR.EUC-KR';
942 $languages['ko_KR']['XTRA_CODE'] = 'korean_xtra';
943 $languages['ko']['ALIAS'] = 'ko_KR';
944
945 $languages['lt_LT']['NAME'] = 'Lithuanian';
946 $languages['lt_LT']['ALTNAME'] = 'Lietuvi&#371;';
947 $languages['lt_LT']['CHARSET'] = 'utf-8';
948 $languages['lt_LT']['LOCALE'] = 'lt_LT.UTF-8';
949 $languages['lt']['ALIAS'] = 'lt_LT';
950
951 $languages['nl_NL']['NAME'] = 'Dutch';
952 $languages['nl_NL']['ALTNAME'] = 'Nederlands';
953 $languages['nl_NL']['CHARSET'] = 'iso-8859-1';
954 $languages['nl_NL']['LOCALE'] = 'nl_NL.ISO8859-1';
955 $languages['nl']['ALIAS'] = 'nl_NL';
956
957 $languages['ms_MY']['NAME'] = 'Malay';
958 $languages['ms_MY']['ALTNAME'] = 'Bahasa Melayu';
959 $languages['ms_MY']['CHARSET'] = 'iso-8859-1';
960 $languages['ms_MY']['LOCALE'] = 'ms_MY.ISO8859-1';
961 $languages['my']['ALIAS'] = 'ms_MY';
962
963 $languages['nb_NO']['NAME'] = 'Norwegian (Bokm&aring;l)';
964 $languages['nb_NO']['ALTNAME'] = 'Norsk (Bokm&aring;l)';
965 $languages['nb_NO']['CHARSET'] = 'iso-8859-1';
966 $languages['nb_NO']['LOCALE'] = 'nb_NO.ISO8859-1';
967 $languages['nb']['ALIAS'] = 'nb_NO';
968
969 $languages['nn_NO']['NAME'] = 'Norwegian (Nynorsk)';
970 $languages['nn_NO']['ALTNAME'] = 'Norsk (Nynorsk)';
971 $languages['nn_NO']['CHARSET'] = 'iso-8859-1';
972 $languages['nn_NO']['LOCALE'] = 'nn_NO.ISO8859-1';
973
974 $languages['pl_PL']['NAME'] = 'Polish';
975 $languages['pl_PL']['ALTNAME'] = 'Polski';
976 $languages['pl_PL']['CHARSET'] = 'iso-8859-2';
977 $languages['pl_PL']['LOCALE'] = 'pl_PL.ISO8859-2';
978 $languages['pl']['ALIAS'] = 'pl_PL';
979
980 $languages['pt_PT']['NAME'] = 'Portuguese (Portugal)';
981 $languages['pt_PT']['CHARSET'] = 'iso-8859-1';
982 $languages['pt_PT']['LOCALE'] = 'pt_PT.ISO8859-1';
983 $languages['pt']['ALIAS'] = 'pt_PT';
984
985 $languages['pt_BR']['NAME'] = 'Portuguese (Brazil)';
986 $languages['pt_BR']['ALTNAME'] = 'Portugu&ecirc;s do Brasil';
987 $languages['pt_BR']['CHARSET'] = 'iso-8859-1';
988 $languages['pt_BR']['LOCALE'] = 'pt_BR.ISO8859-1';
989
990 $languages['ro_RO']['NAME'] = 'Romanian';
991 $languages['ro_RO']['ALTNAME'] = 'Rom&acirc;n&#259;';
992 $languages['ro_RO']['CHARSET'] = 'iso-8859-2';
993 $languages['ro_RO']['LOCALE'] = 'ro_RO.ISO8859-2';
994 $languages['ro']['ALIAS'] = 'ro_RO';
995
996 $languages['ru_RU']['NAME'] = 'Russian';
997 $languages['ru_RU']['ALTNAME'] = '&#1056;&#1091;&#1089;&#1089;&#1082;&#1080;&#1081;';
998 $languages['ru_RU']['CHARSET'] = 'utf-8';
999 $languages['ru_RU']['LOCALE'] = 'ru_RU.UTF-8';
1000 $languages['ru']['ALIAS'] = 'ru_RU';
1001
1002 $languages['sk_SK']['NAME'] = 'Slovak';
1003 $languages['sk_SK']['CHARSET'] = 'iso-8859-2';
1004 $languages['sk_SK']['LOCALE'] = 'sk_SK.ISO8859-2';
1005 $languages['sk']['ALIAS'] = 'sk_SK';
1006
1007 $languages['sl_SI']['NAME'] = 'Slovenian';
1008 $languages['sl_SI']['ALTNAME'] = 'Sloven&scaron;&#269;ina';
1009 $languages['sl_SI']['CHARSET'] = 'iso-8859-2';
1010 $languages['sl_SI']['LOCALE'] = 'sl_SI.ISO8859-2';
1011 $languages['sl']['ALIAS'] = 'sl_SI';
1012
1013 $languages['sr_YU']['NAME'] = 'Serbian';
1014 $languages['sr_YU']['ALTNAME'] = 'Srpski';
1015 $languages['sr_YU']['CHARSET'] = 'iso-8859-2';
1016 $languages['sr_YU']['LOCALE'] = 'sr_YU.ISO8859-2';
1017 $languages['sr']['ALIAS'] = 'sr_YU';
1018
1019 $languages['sv_SE']['NAME'] = 'Swedish';
1020 $languages['sv_SE']['ALTNAME'] = 'Svenska';
1021 $languages['sv_SE']['CHARSET'] = 'iso-8859-1';
1022 $languages['sv_SE']['LOCALE'] = 'sv_SE.ISO8859-1';
1023 $languages['sv']['ALIAS'] = 'sv_SE';
1024
1025 $languages['th_TH']['NAME'] = 'Thai';
1026 $languages['th_TH']['CHARSET'] = 'tis-620';
1027 $languages['th_TH']['LOCALE'] = 'th_TH.TIS-620';
1028 $languages['th']['ALIAS'] = 'th_TH';
1029
1030 $languages['tl_PH']['NAME'] = 'Tagalog';
1031 $languages['tl_PH']['CHARSET'] = 'iso-8859-1';
1032 $languages['tl_PH']['LOCALE'] = 'tl_PH.ISO8859-1';
1033 $languages['tl']['ALIAS'] = 'tl_PH';
1034
1035 $languages['tr_TR']['NAME'] = 'Turkish';
1036 $languages['tr_TR']['CHARSET'] = 'iso-8859-9';
1037 $languages['tr_TR']['LOCALE'] = 'tr_TR.ISO8859-9';
1038 $languages['tr']['ALIAS'] = 'tr_TR';
1039
1040 $languages['zh_TW']['NAME'] = 'Chinese Trad';
1041 $languages['zh_TW']['CHARSET'] = 'big5';
1042 $languages['zh_TW']['LOCALE'] = 'zh_TW.BIG5';
1043 $languages['tw']['ALIAS'] = 'zh_TW';
1044
1045 $languages['zh_CN']['NAME'] = 'Chinese Simp';
1046 $languages['zh_CN']['CHARSET'] = 'gb2312';
1047 $languages['zh_CN']['LOCALE'] = 'zh_CN.GB2312';
1048 $languages['cn']['ALIAS'] = 'zh_CN';
1049
1050 $languages['uk_UA']['NAME'] = 'Ukrainian';
1051 $languages['uk_UA']['CHARSET'] = 'koi8-u';
1052 $languages['uk_UA']['LOCALE'] = 'uk_UA.KOI8-U';
1053 $languages['uk']['ALIAS'] = 'uk_UA';
1054
1055 $languages['ru_UA']['NAME'] = 'Russian (Ukrainian)';
1056 $languages['ru_UA']['CHARSET'] = 'koi8-r';
1057 $languages['ru_UA']['LOCALE'] = 'ru_UA.KOI8-R';
1058
1059 /*
1060 $languages['vi_VN']['NAME'] = 'Vietnamese';
1061 $languages['vi_VN']['CHARSET'] = 'utf-8';
1062 $languages['vi']['ALIAS'] = 'vi_VN';
1063 */
1064
1065 // Right to left languages
1066 $languages['ar']['NAME'] = 'Arabic';
1067 $languages['ar']['CHARSET'] = 'windows-1256';
1068 $languages['ar']['DIR'] = 'rtl';
1069
1070 $languages['fa_IR']['NAME'] = 'Farsi';
1071 $languages['fa_IR']['CHARSET'] = 'utf-8';
1072 $languages['fa_IR']['DIR'] = 'rtl';
1073 $languages['fa_IR']['LOCALE'] = 'fa_IR.UTF-8';
1074 $languages['fa']['ALIAS'] = 'fa_IR';
1075
1076 $languages['he_IL']['NAME'] = 'Hebrew';
1077 $languages['he_IL']['CHARSET'] = 'windows-1255';
1078 $languages['he_IL']['LOCALE'] = 'he_IL.CP1255';
1079 $languages['he_IL']['DIR'] = 'rtl';
1080 $languages['he']['ALIAS'] = 'he_IL';
1081
1082 $languages['ug']['NAME'] = 'Uighur';
1083 $languages['ug']['CHARSET'] = 'utf-8';
1084 $languages['ug']['DIR'] = 'rtl';
1085
1086 /* Detect whether gettext is installed. */
1087 $gettext_flags = 0;
1088 if (function_exists('_')) {
1089 $gettext_flags += 1;
1090 }
1091 if (function_exists('bindtextdomain')) {
1092 $gettext_flags += 2;
1093 }
1094 if (function_exists('textdomain')) {
1095 $gettext_flags += 4;
1096 }
1097 if (function_exists('ngettext')) {
1098 $gettext_flags += 8;
1099 }
1100
1101 /* If gettext is fully loaded, cool */
1102 if ($gettext_flags == 15) {
1103 $use_gettext = true;
1104 }
1105
1106 /* If ngettext support is missing, load it */
1107 elseif ($gettext_flags == 7) {
1108 $use_gettext = true;
1109 // load internal ngettext functions
1110 include_once(SM_PATH . 'class/l10n.class.php');
1111 include_once(SM_PATH . 'functions/ngettext.php');
1112 }
1113
1114 /* If we can fake gettext, try that */
1115 elseif ($gettext_flags == 0) {
1116 $use_gettext = true;
1117 include_once(SM_PATH . 'functions/gettext.php');
1118 } else {
1119 /* Uh-ho. A weird install */
1120 if (! $gettext_flags & 1) {
1121 /**
1122 * Function is used as replacement in broken installs
1123 * @ignore
1124 */
1125 function _($str) {
1126 return $str;
1127 }
1128 }
1129 if (! $gettext_flags & 2) {
1130 /**
1131 * Function is used as replacement in broken installs
1132 * @ignore
1133 */
1134 function bindtextdomain() {
1135 return;
1136 }
1137 }
1138 if (! $gettext_flags & 4) {
1139 /**
1140 * Function is used as replacemet in broken installs
1141 * @ignore
1142 */
1143 function textdomain() {
1144 return;
1145 }
1146 }
1147 if (! $gettext_flags & 8) {
1148 /**
1149 * Function is used as replacemet in broken installs
1150 * @ignore
1151 */
1152 function ngettext($str,$str2,$number) {
1153 if ($number>1) {
1154 return $str2;
1155 } else {
1156 return $str;
1157 }
1158 }
1159 }
1160 }
1161 ?>