adding version information
[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 if ($sm_notAlias=='tr_TR') putenv( "LC_CTYPE=C" );
296 }
297 setlocale(LC_ALL, $longlocale);
298 if ($sm_notAlias=='tr_TR') setlocale(LC_CTYPE,'C');
299
300 // Set text direction/alignment variables
301 if (isset($languages[$sm_notAlias]['DIR']) &&
302 $languages[$sm_notAlias]['DIR'] == 'rtl') {
303 /**
304 * Text direction
305 * @global string $text_direction
306 */
307 $text_direction='rtl';
308 /**
309 * Left alignment
310 * @global string $left_align
311 */
312 $left_align='right';
313 /**
314 * Right alignment
315 * @global string $right_align
316 */
317 $right_align='left';
318 } else {
319 $text_direction='ltr';
320 $left_align='left';
321 $right_align='right';
322 }
323
324 $squirrelmail_language = $sm_notAlias;
325 if ($squirrelmail_language == 'ja_JP') {
326 header ('Content-Type: text/html; charset=EUC-JP');
327 if (!function_exists('mb_internal_encoding')) {
328 // Error messages can't be displayed here
329 $error = 1;
330 // Revert to English if possible.
331 if (function_exists('setPref') && $username!='' && $data_dir!="") {
332 setPref($data_dir, $username, 'language', "en_US");
333 $error = 2;
334 }
335 // stop further execution in order not to get php errors on mb_internal_encoding().
336 return $error;
337 }
338 if (function_exists('mb_language')) {
339 mb_language('Japanese');
340 }
341 mb_internal_encoding('EUC-JP');
342 mb_http_output('pass');
343 } elseif ($squirrelmail_language == 'en_US') {
344 header( 'Content-Type: text/html; charset=' . $default_charset );
345 } else {
346 header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] );
347 }
348 }
349 return 0;
350 }
351
352 /**
353 * Sets default_charset variable according to the one that is used by user's translations.
354 *
355 * Function changes global $default_charset variable in order to be sure, that it
356 * contains charset used by user's translation. Sanity of $squirrelmail_default_language
357 * and $default_charset combination provided in SquirrelMail config is also tested.
358 *
359 * There can be a $default_charset setting in the
360 * config.php file, but the user may have a different language
361 * selected for a user interface. This function checks the
362 * language selected by the user and tags the outgoing messages
363 * with the appropriate charset corresponding to the language
364 * selection. This is "more right" (tm), than just stamping the
365 * message blindly with the system-wide $default_charset.
366 */
367 function set_my_charset(){
368 global $data_dir, $username, $default_charset, $languages, $squirrelmail_default_language;
369
370 $my_language = getPref($data_dir, $username, 'language');
371 if (!$my_language) {
372 $my_language = $squirrelmail_default_language ;
373 }
374 // Catch removed translation
375 if (!isset($languages[$my_language])) {
376 $my_language="en_US";
377 }
378 while (isset($languages[$my_language]['ALIAS'])) {
379 $my_language = $languages[$my_language]['ALIAS'];
380 }
381 $my_charset = $languages[$my_language]['CHARSET'];
382 if ($my_language!='en_US') {
383 $default_charset = $my_charset;
384 }
385 }
386
387 /**************************
388 * Japanese extra functions
389 **************************/
390
391 /**
392 * Japanese decoding function
393 *
394 * converts string to euc-jp, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
395 * charset. Needs mbstring support in php.
396 * @param string $ret text, that has to be converted
397 * @return string converted string
398 * @since 1.5.1
399 */
400 function japanese_xtra_decode($ret) {
401 if (function_exists('mb_detect_encoding')) {
402 $detect_encoding = @mb_detect_encoding($ret);
403 if ($detect_encoding == 'JIS' ||
404 $detect_encoding == 'EUC-JP' ||
405 $detect_encoding == 'SJIS' ||
406 $detect_encoding == 'UTF-8') {
407
408 $ret = mb_convert_kana(mb_convert_encoding($ret, 'EUC-JP', 'AUTO'), "KV");
409 }
410 }
411 return $ret;
412 }
413
414 /**
415 * Japanese encoding function
416 *
417 * converts string to jis, if string uses JIS, EUC-JP, ShiftJIS or UTF-8
418 * charset. Needs mbstring support in php.
419 * @param string $ret text, that has to be converted
420 * @return string converted text
421 * @since 1.5.1
422 */
423 function japanese_xtra_encode($ret) {
424 if (function_exists('mb_detect_encoding')) {
425 $detect_encoding = @mb_detect_encoding($ret);
426 if ($detect_encoding == 'JIS' ||
427 $detect_encoding == 'EUC-JP' ||
428 $detect_encoding == 'SJIS' ||
429 $detect_encoding == 'UTF-8') {
430
431 $ret = mb_convert_encoding(mb_convert_kana($ret, "KV"), 'JIS', 'AUTO');
432 }
433 }
434 return $ret;
435 }
436
437 /**
438 * Japanese header encoding function
439 *
440 * creates base64 encoded header in iso-2022-jp charset
441 * @param string $ret text, that has to be converted
442 * @return string mime base64 encoded string
443 * @since 1.5.1
444 */
445 function japanese_xtra_encodeheader($ret) {
446 if (function_exists('mb_detect_encoding')) {
447 $result = '';
448 if (strlen($ret) > 0) {
449 $tmpstr = mb_substr($ret, 0, 1);
450 $prevcsize = strlen($tmpstr);
451 for ($i = 1; $i < mb_strlen($ret); $i++) {
452 $tmp = mb_substr($ret, $i, 1);
453 if (strlen($tmp) == $prevcsize) {
454 $tmpstr .= $tmp;
455 } else {
456 if ($prevcsize == 1) {
457 $result .= $tmpstr;
458 } else {
459 $result .= str_replace(' ', '',
460 mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
461 }
462 $tmpstr = $tmp;
463 $prevcsize = strlen($tmp);
464 }
465 }
466 if (strlen($tmpstr)) {
467 if (strlen(mb_substr($tmpstr, 0, 1)) == 1)
468 $result .= $tmpstr;
469 else
470 $result .= str_replace(' ', '',
471 mb_encode_mimeheader($tmpstr,'iso-2022-jp','B',''));
472 }
473 }
474 $ret = $result;
475 }
476 return $ret;
477 }
478
479 /**
480 * Japanese header decoding function
481 *
482 * return human readable string from mime header. string is returned in euc-jp
483 * charset.
484 * @param string $ret header string
485 * @return string decoded header string
486 * @since 1.5.1
487 */
488 function japanese_xtra_decodeheader($ret) {
489 if (function_exists('mb_detect_encoding')) {
490 $ret = str_replace("\t", "", $ret);
491 if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', $ret))
492 $ret = @mb_decode_mimeheader($ret);
493 $ret = @mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
494 }
495 return $ret;
496 }
497
498 /**
499 * Japanese downloaded filename processing function
500 *
501 * Returns shift-jis or euc-jp encoded file name
502 * @param string $ret string
503 * @param string $useragent browser
504 * @return string converted string
505 * @since 1.5.1
506 */
507 function japanese_xtra_downloadfilename($ret,$useragent) {
508 if (function_exists('mb_detect_encoding')) {
509 if (strstr($useragent, 'Windows') !== false ||
510 strstr($useragent, 'Mac_') !== false) {
511 $ret = mb_convert_encoding($ret, 'SJIS', 'AUTO');
512 } else {
513 $ret = mb_convert_encoding($ret, 'EUC-JP', 'AUTO');
514 }
515 }
516 return $ret;
517 }
518
519 /**
520 * Japanese wordwrap function
521 *
522 * wraps text at set number of symbols
523 * @param string $ret text
524 * @param integer $wrap number of symbols per line
525 * @return string wrapped text
526 * @since 1.5.1
527 */
528 function japanese_xtra_wordwrap($ret,$wrap) {
529 if (function_exists('mb_detect_encoding')) {
530 $no_begin = "\x21\x25\x29\x2c\x2e\x3a\x3b\x3f\x5d\x7d\xa1\xf1\xa1\xeb\xa1" .
531 "\xc7\xa1\xc9\xa2\xf3\xa1\xec\xa1\xed\xa1\xee\xa1\xa2\xa1\xa3\xa1\xb9" .
532 "\xa1\xd3\xa1\xd5\xa1\xd7\xa1\xd9\xa1\xdb\xa1\xcd\xa4\xa1\xa4\xa3\xa4" .
533 "\xa5\xa4\xa7\xa4\xa9\xa4\xc3\xa4\xe3\xa4\xe5\xa4\xe7\xa4\xee\xa1\xab" .
534 "\xa1\xac\xa1\xb5\xa1\xb6\xa5\xa1\xa5\xa3\xa5\xa5\xa5\xa7\xa5\xa9\xa5" .
535 "\xc3\xa5\xe3\xa5\xe5\xa5\xe7\xa5\xee\xa5\xf5\xa5\xf6\xa1\xa6\xa1\xbc" .
536 "\xa1\xb3\xa1\xb4\xa1\xaa\xa1\xf3\xa1\xcb\xa1\xa4\xa1\xa5\xa1\xa7\xa1" .
537 "\xa8\xa1\xa9\xa1\xcf\xa1\xd1";
538 $no_end = "\x5c\x24\x28\x5b\x7b\xa1\xf2\x5c\xa1\xc6\xa1\xc8\xa1\xd2\xa1" .
539 "\xd4\xa1\xd6\xa1\xd8\xa1\xda\xa1\xcc\xa1\xf0\xa1\xca\xa1\xce\xa1\xd0\xa1\xef";
540
541 if (strlen($ret) >= $wrap &&
542 substr($ret, 0, 1) != '>' &&
543 strpos($ret, 'http://') === FALSE &&
544 strpos($ret, 'https://') === FALSE &&
545 strpos($ret, 'ftp://') === FALSE) {
546
547 $ret = mb_convert_kana($ret, "KV");
548
549 $line_new = '';
550 $ptr = 0;
551
552 while ($ptr < strlen($ret) - 1) {
553 $l = mb_strcut($ret, $ptr, $wrap);
554 $ptr += strlen($l);
555 $tmp = $l;
556
557 $l = mb_strcut($ret, $ptr, 2);
558 while (strlen($l) != 0 && mb_strpos($no_begin, $l) !== FALSE ) {
559 $tmp .= $l;
560 $ptr += strlen($l);
561 $l = mb_strcut($ret, $ptr, 1);
562 }
563 $line_new .= $tmp;
564 if ($ptr < strlen($ret) - 1)
565 $line_new .= "\n";
566 }
567 $ret = $line_new;
568 }
569 }
570 return $ret;
571 }
572
573 /**
574 * Japanese imap folder name encoding function
575 *
576 * converts folder name from euc-jp to utf7-imap
577 * @param string $ret folder name
578 * @return string converted folder name
579 * @since 1.5.1
580 */
581 function japanese_xtra_utf7_imap_encode($ret){
582 if (function_exists('mb_detect_encoding')) {
583 $ret = mb_convert_encoding($ret, 'UTF7-IMAP', 'EUC-JP');
584 }
585 return $ret;
586 }
587
588 /**
589 * Japanese imap folder name decoding function
590 *
591 * converts folder name from utf7-imap to euc-jp.
592 * @param string $ret folder name in utf7-imap
593 * @return string converted folder name
594 * @since 1.5.1
595 */
596 function japanese_xtra_utf7_imap_decode($ret) {
597 if (function_exists('mb_detect_encoding')) {
598 $ret = mb_convert_encoding($ret, 'EUC-JP', 'UTF7-IMAP');
599 }
600 return $ret;
601 }
602
603 /**
604 * Japanese string trimming function
605 *
606 * trims string to defined number of symbols
607 * @param string $ret string
608 * @param integer $width number of symbols
609 * @return string trimmed string
610 * @since 1.5.1
611 */
612 function japanese_xtra_strimwidth($ret,$width) {
613 if (function_exists('mb_detect_encoding')) {
614 $ret = mb_strimwidth($ret, 0, $width, '...');
615 }
616 return $ret;
617 }
618
619 /********************************
620 * Korean charset extra functions
621 ********************************/
622
623 /**
624 * Korean downloaded filename processing functions
625 *
626 * @param string default return value
627 * @return string
628 * @since 1.5.1
629 */
630 function korean_xtra_downloadfilename($ret) {
631 $ret = str_replace("\x0D\x0A", '', $ret); /* Hanmail's CR/LF Clear */
632 for ($i=0;$i<strlen($ret);$i++) {
633 if ($ret[$i] >= "\xA1" && $ret[$i] <= "\xFE") { /* 0xA1 - 0XFE are Valid */
634 $i++;
635 continue;
636 } else if (($ret[$i] >= 'a' && $ret[$i] <= 'z') || /* From Original ereg_replace in download.php */
637 ($ret[$i] >= 'A' && $ret[$i] <= 'Z') ||
638 ($ret[$i] == '.') || ($ret[$i] == '-')) {
639 continue;
640 } else {
641 $ret[$i] = '_';
642 }
643 }
644 return $ret;
645 }
646
647 /**
648 * Replaces non-braking spaces inserted by some browsers with regular space
649 *
650 * This function can be used to replace non-braking space symbols
651 * that are inserted in forms by some browsers instead of normal
652 * space symbol.
653 *
654 * @param string $string Text that needs to be cleaned
655 * @param string $charset Charset used in text
656 * @return string Cleaned text
657 */
658 function cleanup_nbsp($string,$charset) {
659
660 // reduce number of case statements
661 if (stristr('iso-8859-',substr($charset,0,9))){
662 $output_charset="iso-8859-x";
663 }
664 if (stristr('windows-125',substr($charset,0,11))){
665 $output_charset="cp125x";
666 }
667 if (stristr('koi8',substr($charset,0,4))){
668 $output_charset="koi8-x";
669 }
670 if (! isset($output_charset)){
671 $output_charset=strtolower($charset);
672 }
673
674 // where is non-braking space symbol
675 switch($output_charset):
676 case "iso-8859-x":
677 case "cp125x":
678 case "iso-2022-jp":
679 $nbsp="\xA0";
680 break;
681 case "koi8-x":
682 $nbsp="\x9A";
683 break;
684 case "utf-8":
685 $nbsp="\xC2\xA0";
686 break;
687 default:
688 // don't change string if charset is unmatched
689 return $string;
690 endswitch;
691
692 // return space instead of non-braking space.
693 return str_replace($nbsp,' ',$string);
694 }
695
696 /**
697 * Function informs if it is safe to convert given charset to the one that is used by user.
698 *
699 * It is safe to use conversion only if user uses utf-8 encoding and when
700 * converted charset is similar to the one that is used by user.
701 *
702 * @param string $input_charset Charset of text that needs to be converted
703 * @return bool is it possible to convert to user's charset
704 */
705 function is_conversion_safe($input_charset) {
706 global $languages, $sm_notAlias, $default_charset, $lossy_encoding;
707
708 if (isset($lossy_encoding) && $lossy_encoding )
709 return true;
710
711 // convert to lower case
712 $input_charset = strtolower($input_charset);
713
714 // Is user's locale Unicode based ?
715 if ( $default_charset == "utf-8" ) {
716 return true;
717 }
718
719 // Charsets that are similar
720 switch ($default_charset):
721 case "windows-1251":
722 if ( $input_charset == "iso-8859-5" ||
723 $input_charset == "koi8-r" ||
724 $input_charset == "koi8-u" ) {
725 return true;
726 } else {
727 return false;
728 }
729 case "windows-1257":
730 if ( $input_charset == "iso-8859-13" ||
731 $input_charset == "iso-8859-4" ) {
732 return true;
733 } else {
734 return false;
735 }
736 case "iso-8859-4":
737 if ( $input_charset == "iso-8859-13" ||
738 $input_charset == "windows-1257" ) {
739 return true;
740 } else {
741 return false;
742 }
743 case "iso-8859-5":
744 if ( $input_charset == "windows-1251" ||
745 $input_charset == "koi8-r" ||
746 $input_charset == "koi8-u" ) {
747 return true;
748 } else {
749 return false;
750 }
751 case "iso-8859-13":
752 if ( $input_charset == "iso-8859-4" ||
753 $input_charset == "windows-1257" ) {
754 return true;
755 } else {
756 return false;
757 }
758 case "koi8-r":
759 if ( $input_charset == "windows-1251" ||
760 $input_charset == "iso-8859-5" ||
761 $input_charset == "koi8-u" ) {
762 return true;
763 } else {
764 return false;
765 }
766 case "koi8-u":
767 if ( $input_charset == "windows-1251" ||
768 $input_charset == "iso-8859-5" ||
769 $input_charset == "koi8-r" ) {
770 return true;
771 } else {
772 return false;
773 }
774 default:
775 return false;
776 endswitch;
777 }
778
779
780 /* ------------------------------ main --------------------------- */
781
782 global $squirrelmail_language, $languages, $use_gettext;
783
784 if (! isset($squirrelmail_language)) {
785 $squirrelmail_language = '';
786 }
787
788 /**
789 * Array specifies the available translations.
790 *
791 * Structure of array:
792 * $languages['language']['variable'] = 'value'
793 *
794 * Possible 'variable' names:
795 * NAME - Translation name in English
796 * CHARSET - Encoding used by translation
797 * ALIAS - used when 'language' is only short name and 'value' should provide long language name
798 * ALTNAME - Native translation name. Any 8bit symbols must be html encoded.
799 * LOCALE - Full locale name (in xx_XX.charset format)
800 * DIR - Text direction. Used to define Right-to-Left languages. Possible values 'rtl' or 'ltr'. If undefined - defaults to 'ltr'
801 * XTRA_CODE - translation uses special functions. See doc/i18n.txt
802 *
803 * Each 'language' definition requires NAME+CHARSET or ALIAS variables.
804 *
805 * @name $languages
806 * @global array $languages
807 */
808 $languages['bg_BG']['NAME'] = 'Bulgarian';
809 $languages['bg_BG']['ALTNAME'] = '&#1041;&#1098;&#1083;&#1075;&#1072;&#1088;&#1089;&#1082;&#1080;';
810 $languages['bg_BG']['CHARSET'] = 'windows-1251';
811 $languages['bg_BG']['LOCALE'] = 'bg_BG.CP1251';
812 $languages['bg']['ALIAS'] = 'bg_BG';
813
814 $languages['bn_IN']['NAME'] = 'Bengali';
815 $languages['bn_IN']['CHARSET'] = 'utf-8';
816 $languages['bn_IN']['LOCALE'] = 'bn_IN.UTF-8';
817 $languages['bn']['ALIAS'] = 'bn_IN';
818
819 $languages['ca_ES']['NAME'] = 'Catalan';
820 $languages['ca_ES']['CHARSET'] = 'iso-8859-1';
821 $languages['ca_ES']['LOCALE'] = 'ca_ES.ISO8859-1';
822 $languages['ca']['ALIAS'] = 'ca_ES';
823
824 $languages['cs_CZ']['NAME'] = 'Czech';
825 $languages['cs_CZ']['ALTNAME'] = '&#268;e&scaron;tina';
826 $languages['cs_CZ']['CHARSET'] = 'iso-8859-2';
827 $languages['cs_CZ']['LOCALE'] = 'cs_CZ.ISO8859-2';
828 $languages['cs']['ALIAS'] = 'cs_CZ';
829
830 $languages['cy_GB']['NAME'] = 'Welsh';
831 $languages['cy_GB']['ALTNAME'] = 'Cymraeg';
832 $languages['cy_GB']['CHARSET'] = 'iso-8859-1';
833 $languages['cy_GB']['LOCALE'] = 'cy_GB.ISO8859-1';
834 $languages['cy']['ALIAS'] = 'cy_GB';
835
836 // Danish locale is da_DK.
837 $languages['da_DK']['NAME'] = 'Danish';
838 $languages['da_DK']['ALTNAME'] = 'Dansk';
839 $languages['da_DK']['CHARSET'] = 'iso-8859-1';
840 $languages['da_DK']['LOCALE'] = 'da_DK.ISO8859-1';
841 $languages['da']['ALIAS'] = 'da_DK';
842
843 $languages['de_DE']['NAME'] = 'German';
844 $languages['de_DE']['ALTNAME'] = 'Deutsch';
845 $languages['de_DE']['CHARSET'] = 'iso-8859-1';
846 $languages['de_DE']['LOCALE'] = 'de_DE.ISO8859-1';
847 $languages['de']['ALIAS'] = 'de_DE';
848
849 $languages['el_GR']['NAME'] = 'Greek';
850 $languages['el_GR']['ALTNAME'] = '&Epsilon;&lambda;&lambda;&eta;&nu;&iota;&kappa;&#940;';
851 $languages['el_GR']['CHARSET'] = 'iso-8859-7';
852 $languages['el_GR']['LOCALE'] = 'el_GR.ISO8859-7';
853 $languages['el']['ALIAS'] = 'el_GR';
854
855 $languages['en_GB']['NAME'] = 'British';
856 $languages['en_GB']['CHARSET'] = 'iso-8859-15';
857 $languages['en_GB']['LOCALE'] = 'en_GB.ISO8859-15';
858
859 $languages['en_US']['NAME'] = 'English';
860 $languages['en_US']['CHARSET'] = 'iso-8859-1';
861 $languages['en_US']['LOCALE'] = 'en_US.ISO8859-1';
862 $languages['en']['ALIAS'] = 'en_US';
863
864 $languages['es_ES']['NAME'] = 'Spanish';
865 $languages['es_ES']['ALTNAME'] = 'Espa&ntilde;ol';
866 $languages['es_ES']['CHARSET'] = 'iso-8859-1';
867 $languages['es_ES']['LOCALE'] = 'es_ES.ISO8859-1';
868 $languages['es']['ALIAS'] = 'es_ES';
869
870 $languages['et_EE']['NAME'] = 'Estonian';
871 $languages['et_EE']['CHARSET'] = 'iso-8859-15';
872 $languages['et_EE']['LOCALE'] = 'et_EE.ISO8859-15';
873 $languages['et']['ALIAS'] = 'et_EE';
874
875 $languages['eu_ES']['NAME'] = 'Basque';
876 $languages['eu_ES']['CHARSET'] = 'iso-8859-1';
877 $languages['eu_ES']['LOCALE'] = 'eu_ES.ISO8859-1';
878 $languages['eu']['ALIAS'] = 'eu_ES';
879
880 $languages['fo_FO']['NAME'] = 'Faroese';
881 $languages['fo_FO']['CHARSET'] = 'iso-8859-1';
882 $languages['fo_FO']['LOCALE'] = 'fo_FO.ISO8859-1';
883 $languages['fo']['ALIAS'] = 'fo_FO';
884
885 $languages['fi_FI']['NAME'] = 'Finnish';
886 $languages['fi_FI']['ALTNAME'] = 'Suomi';
887 $languages['fi_FI']['CHARSET'] = 'iso-8859-1';
888 $languages['fi_FI']['LOCALE'] = 'fi_FI.ISO8859-1';
889 $languages['fi']['ALIAS'] = 'fi_FI';
890
891 $languages['fr_FR']['NAME'] = 'French';
892 $languages['fr_FR']['ALTNAME'] = 'Fran&#231;ais';
893 $languages['fr_FR']['CHARSET'] = 'iso-8859-1';
894 $languages['fr_FR']['LOCALE'] = 'fr_FR.ISO8859-1';
895 $languages['fr']['ALIAS'] = 'fr_FR';
896
897 $languages['hr_HR']['NAME'] = 'Croatian';
898 $languages['hr_HR']['CHARSET'] = 'iso-8859-2';
899 $languages['hr_HR']['LOCALE'] = 'hr_HR.ISO8859-2';
900 $languages['hr']['ALIAS'] = 'hr_HR';
901
902 $languages['hu_HU']['NAME'] = 'Hungarian';
903 $languages['hu_HU']['ALTNAME'] = 'Magyar';
904 $languages['hu_HU']['CHARSET'] = 'iso-8859-2';
905 $languages['hu_HU']['LOCALE'] = 'hu_HU.ISO8859-2';
906 $languages['hu']['ALIAS'] = 'hu_HU';
907
908 $languages['id_ID']['NAME'] = 'Indonesian';
909 $languages['id_ID']['ALTNAME'] = 'Bahasa Indonesia';
910 $languages['id_ID']['CHARSET'] = 'iso-8859-1';
911 $languages['id_ID']['LOCALE'] = 'id_ID.ISO8859-1';
912 $languages['id']['ALIAS'] = 'id_ID';
913
914 $languages['is_IS']['NAME'] = 'Icelandic';
915 $languages['is_IS']['ALTNAME'] = '&Iacute;slenska';
916 $languages['is_IS']['CHARSET'] = 'iso-8859-1';
917 $languages['is_IS']['LOCALE'] = 'is_IS.ISO8859-1';
918 $languages['is']['ALIAS'] = 'is_IS';
919
920 $languages['it_IT']['NAME'] = 'Italian';
921 $languages['it_IT']['CHARSET'] = 'iso-8859-1';
922 $languages['it_IT']['LOCALE'] = 'it_IT.ISO8859-1';
923 $languages['it']['ALIAS'] = 'it_IT';
924
925 $languages['ja_JP']['NAME'] = 'Japanese';
926 $languages['ja_JP']['ALTNAME'] = '&#26085;&#26412;&#35486;';
927 $languages['ja_JP']['CHARSET'] = 'iso-2022-jp';
928 $languages['ja_JP']['LOCALE'] = 'ja_JP.EUC-JP';
929 $languages['ja_JP']['XTRA_CODE'] = 'japanese_xtra';
930 $languages['ja']['ALIAS'] = 'ja_JP';
931
932 $languages['ko_KR']['NAME'] = 'Korean';
933 $languages['ko_KR']['CHARSET'] = 'euc-KR';
934 $languages['ko_KR']['LOCALE'] = 'ko_KR.EUC-KR';
935 $languages['ko_KR']['XTRA_CODE'] = 'korean_xtra';
936 $languages['ko']['ALIAS'] = 'ko_KR';
937
938 $languages['lt_LT']['NAME'] = 'Lithuanian';
939 $languages['lt_LT']['ALTNAME'] = 'Lietuvi&#371;';
940 $languages['lt_LT']['CHARSET'] = 'utf-8';
941 $languages['lt_LT']['LOCALE'] = 'lt_LT.UTF-8';
942 $languages['lt']['ALIAS'] = 'lt_LT';
943
944 $languages['nl_NL']['NAME'] = 'Dutch';
945 $languages['nl_NL']['ALTNAME'] = 'Nederlands';
946 $languages['nl_NL']['CHARSET'] = 'iso-8859-1';
947 $languages['nl_NL']['LOCALE'] = 'nl_NL.ISO8859-1';
948 $languages['nl']['ALIAS'] = 'nl_NL';
949
950 $languages['ms_MY']['NAME'] = 'Malay';
951 $languages['ms_MY']['ALTNAME'] = 'Bahasa Melayu';
952 $languages['ms_MY']['CHARSET'] = 'iso-8859-1';
953 $languages['ms_MY']['LOCALE'] = 'ms_MY.ISO8859-1';
954 $languages['my']['ALIAS'] = 'ms_MY';
955
956 $languages['nb_NO']['NAME'] = 'Norwegian (Bokm&aring;l)';
957 $languages['nb_NO']['ALTNAME'] = 'Norsk (Bokm&aring;l)';
958 $languages['nb_NO']['CHARSET'] = 'iso-8859-1';
959 $languages['nb_NO']['LOCALE'] = 'nb_NO.ISO8859-1';
960 $languages['nb']['ALIAS'] = 'nb_NO';
961
962 $languages['nn_NO']['NAME'] = 'Norwegian (Nynorsk)';
963 $languages['nn_NO']['ALTNAME'] = 'Norsk (Nynorsk)';
964 $languages['nn_NO']['CHARSET'] = 'iso-8859-1';
965 $languages['nn_NO']['LOCALE'] = 'nn_NO.ISO8859-1';
966
967 $languages['pl_PL']['NAME'] = 'Polish';
968 $languages['pl_PL']['ALTNAME'] = 'Polski';
969 $languages['pl_PL']['CHARSET'] = 'iso-8859-2';
970 $languages['pl_PL']['LOCALE'] = 'pl_PL.ISO8859-2';
971 $languages['pl']['ALIAS'] = 'pl_PL';
972
973 $languages['pt_PT']['NAME'] = 'Portuguese (Portugal)';
974 $languages['pt_PT']['CHARSET'] = 'iso-8859-1';
975 $languages['pt_PT']['LOCALE'] = 'pt_PT.ISO8859-1';
976 $languages['pt']['ALIAS'] = 'pt_PT';
977
978 $languages['pt_BR']['NAME'] = 'Portuguese (Brazil)';
979 $languages['pt_BR']['ALTNAME'] = 'Portugu&ecirc;s do Brasil';
980 $languages['pt_BR']['CHARSET'] = 'iso-8859-1';
981 $languages['pt_BR']['LOCALE'] = 'pt_BR.ISO8859-1';
982
983 $languages['ro_RO']['NAME'] = 'Romanian';
984 $languages['ro_RO']['ALTNAME'] = 'Rom&acirc;n&#259;';
985 $languages['ro_RO']['CHARSET'] = 'iso-8859-2';
986 $languages['ro_RO']['LOCALE'] = 'ro_RO.ISO8859-2';
987 $languages['ro']['ALIAS'] = 'ro_RO';
988
989 $languages['ru_RU']['NAME'] = 'Russian';
990 $languages['ru_RU']['ALTNAME'] = '&#1056;&#1091;&#1089;&#1089;&#1082;&#1080;&#1081;';
991 $languages['ru_RU']['CHARSET'] = 'utf-8';
992 $languages['ru_RU']['LOCALE'] = 'ru_RU.UTF-8';
993 $languages['ru']['ALIAS'] = 'ru_RU';
994
995 $languages['sk_SK']['NAME'] = 'Slovak';
996 $languages['sk_SK']['CHARSET'] = 'iso-8859-2';
997 $languages['sk_SK']['LOCALE'] = 'sk_SK.ISO8859-2';
998 $languages['sk']['ALIAS'] = 'sk_SK';
999
1000 $languages['sl_SI']['NAME'] = 'Slovenian';
1001 $languages['sl_SI']['ALTNAME'] = 'Sloven&scaron;&#269;ina';
1002 $languages['sl_SI']['CHARSET'] = 'iso-8859-2';
1003 $languages['sl_SI']['LOCALE'] = 'sl_SI.ISO8859-2';
1004 $languages['sl']['ALIAS'] = 'sl_SI';
1005
1006 $languages['sr_YU']['NAME'] = 'Serbian';
1007 $languages['sr_YU']['ALTNAME'] = 'Srpski';
1008 $languages['sr_YU']['CHARSET'] = 'iso-8859-2';
1009 $languages['sr_YU']['LOCALE'] = 'sr_YU.ISO8859-2';
1010 $languages['sr']['ALIAS'] = 'sr_YU';
1011
1012 $languages['sv_SE']['NAME'] = 'Swedish';
1013 $languages['sv_SE']['ALTNAME'] = 'Svenska';
1014 $languages['sv_SE']['CHARSET'] = 'iso-8859-1';
1015 $languages['sv_SE']['LOCALE'] = 'sv_SE.ISO8859-1';
1016 $languages['sv']['ALIAS'] = 'sv_SE';
1017
1018 $languages['th_TH']['NAME'] = 'Thai';
1019 $languages['th_TH']['CHARSET'] = 'tis-620';
1020 $languages['th_TH']['LOCALE'] = 'th_TH.TIS-620';
1021 $languages['th']['ALIAS'] = 'th_TH';
1022
1023 $languages['tl_PH']['NAME'] = 'Tagalog';
1024 $languages['tl_PH']['CHARSET'] = 'iso-8859-1';
1025 $languages['tl_PH']['LOCALE'] = 'tl_PH.ISO8859-1';
1026 $languages['tl']['ALIAS'] = 'tl_PH';
1027
1028 $languages['tr_TR']['NAME'] = 'Turkish';
1029 $languages['tr_TR']['CHARSET'] = 'iso-8859-9';
1030 $languages['tr_TR']['LOCALE'] = 'tr_TR.ISO8859-9';
1031 $languages['tr']['ALIAS'] = 'tr_TR';
1032
1033 $languages['zh_TW']['NAME'] = 'Chinese Trad';
1034 $languages['zh_TW']['CHARSET'] = 'big5';
1035 $languages['zh_TW']['LOCALE'] = 'zh_TW.BIG5';
1036 $languages['tw']['ALIAS'] = 'zh_TW';
1037
1038 $languages['zh_CN']['NAME'] = 'Chinese Simp';
1039 $languages['zh_CN']['CHARSET'] = 'gb2312';
1040 $languages['zh_CN']['LOCALE'] = 'zh_CN.GB2312';
1041 $languages['cn']['ALIAS'] = 'zh_CN';
1042
1043 $languages['uk_UA']['NAME'] = 'Ukrainian';
1044 $languages['uk_UA']['CHARSET'] = 'koi8-u';
1045 $languages['uk_UA']['LOCALE'] = 'uk_UA.KOI8-U';
1046 $languages['uk']['ALIAS'] = 'uk_UA';
1047
1048 $languages['ru_UA']['NAME'] = 'Russian (Ukrainian)';
1049 $languages['ru_UA']['CHARSET'] = 'koi8-r';
1050 $languages['ru_UA']['LOCALE'] = 'ru_UA.KOI8-R';
1051
1052 /*
1053 $languages['vi_VN']['NAME'] = 'Vietnamese';
1054 $languages['vi_VN']['CHARSET'] = 'utf-8';
1055 $languages['vi']['ALIAS'] = 'vi_VN';
1056 */
1057
1058 // Right to left languages
1059 $languages['ar']['NAME'] = 'Arabic';
1060 $languages['ar']['CHARSET'] = 'windows-1256';
1061 $languages['ar']['DIR'] = 'rtl';
1062
1063 $languages['fa_IR']['NAME'] = 'Farsi';
1064 $languages['fa_IR']['CHARSET'] = 'utf-8';
1065 $languages['fa_IR']['DIR'] = 'rtl';
1066 $languages['fa_IR']['LOCALE'] = 'fa_IR.UTF-8';
1067 $languages['fa']['ALIAS'] = 'fa_IR';
1068
1069 $languages['he_IL']['NAME'] = 'Hebrew';
1070 $languages['he_IL']['CHARSET'] = 'windows-1255';
1071 $languages['he_IL']['LOCALE'] = 'he_IL.CP1255';
1072 $languages['he_IL']['DIR'] = 'rtl';
1073 $languages['he']['ALIAS'] = 'he_IL';
1074
1075 $languages['ug']['NAME'] = 'Uighur';
1076 $languages['ug']['CHARSET'] = 'utf-8';
1077 $languages['ug']['DIR'] = 'rtl';
1078
1079 /* Detect whether gettext is installed. */
1080 $gettext_flags = 0;
1081 if (function_exists('_')) {
1082 $gettext_flags += 1;
1083 }
1084 if (function_exists('bindtextdomain')) {
1085 $gettext_flags += 2;
1086 }
1087 if (function_exists('textdomain')) {
1088 $gettext_flags += 4;
1089 }
1090 if (function_exists('ngettext')) {
1091 $gettext_flags += 8;
1092 }
1093
1094 /* If gettext is fully loaded, cool */
1095 if ($gettext_flags == 15) {
1096 $use_gettext = true;
1097 }
1098
1099 /* If ngettext support is missing, load it */
1100 elseif ($gettext_flags == 7) {
1101 $use_gettext = true;
1102 // load internal ngettext functions
1103 include_once(SM_PATH . 'class/l10n.class.php');
1104 include_once(SM_PATH . 'functions/ngettext.php');
1105 }
1106
1107 /* If we can fake gettext, try that */
1108 elseif ($gettext_flags == 0) {
1109 $use_gettext = true;
1110 include_once(SM_PATH . 'functions/gettext.php');
1111 } else {
1112 /* Uh-ho. A weird install */
1113 if (! $gettext_flags & 1) {
1114 /**
1115 * Function is used as replacement in broken installs
1116 * @ignore
1117 */
1118 function _($str) {
1119 return $str;
1120 }
1121 }
1122 if (! $gettext_flags & 2) {
1123 /**
1124 * Function is used as replacement in broken installs
1125 * @ignore
1126 */
1127 function bindtextdomain() {
1128 return;
1129 }
1130 }
1131 if (! $gettext_flags & 4) {
1132 /**
1133 * Function is used as replacemet in broken installs
1134 * @ignore
1135 */
1136 function textdomain() {
1137 return;
1138 }
1139 }
1140 if (! $gettext_flags & 8) {
1141 /**
1142 * Function is used as replacemet in broken installs
1143 * @ignore
1144 */
1145 function ngettext($str,$str2,$number) {
1146 if ($number>1) {
1147 return $str2;
1148 } else {
1149 return $str;
1150 }
1151 }
1152 }
1153 }
1154 ?>