2 * Copyright (c) 1996-2012 by the citadel.org team
4 * This program is open source software. You can redistribute it and/or
5 * modify it under the terms of the GNU General Public License version 3.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
14 #include "webserver.h"
15 #define SEARCH_LANG 20 /* how many langs should we parse? */
18 /* actual supported locales */
19 const char *AvailLang[] = {
47 const char **AvailLangLoaded;
48 long nLocalesLoaded = 0;
51 locale_t *wc_locales; /* here we keep the parsed stuff */
54 /* Keep information about one locale */
55 typedef struct _lang_pref {
56 char lang[16]; /* the language locale string */
57 char region[16]; /* the region locale string */
58 long priority; /* which priority does it have */
59 int availability; /* do we know it? */
60 int selectedlang; /* is this the selected language? */
63 /* parse browser locale header
65 * seems as most browsers just do a one after comma value even if more than 10 locales are available. Sample strings:
67 * Accept-Language: sq;q=1.0,de;q=0.9,as;q=0.8,ar;q=0.7,bn;q=0.6,zh-cn;q=0.5,kn;q=0.4,ch;q=0.3,fo;q=0.2,gn;q=0.1,ce;q=0.1,ie;q=0.1
69 * Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3'
70 * Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3
71 * Accept-Language: de,en-us;q=0.9,it;q=0.9,de-de;q=0.8,en-ph;q=0.7,de-at;q=0.7,zh-cn;q=0.6,cy;q=0.5,ar-om;q=0.5,en-tt;q=0.4,xh;q=0.3,nl-be;q=0.3,cs;q=0.2,sv;q=0.1,tk;q=0.1
74 void httplang_to_locale(StrBuf *LocaleString, wcsession *sess)
76 LangStruct wanted_locales[SEARCH_LANG];
82 /* size_t len = strlen(LocaleString); */
90 nParts = StrBufNum_tokens(LocaleString, ',');
91 for (i=0; ((i<nParts) && (i < SEARCH_LANG)); i++)
105 ls = &wanted_locales[i];
107 StrBufExtract_token(Buf, LocaleString, i, ',');
108 /* we are searching, if this list item has something like ;q=n*/
109 if (StrBufNum_tokens(Buf, '=') > 1) {
111 StrBufExtract_token(SBuf, Buf, 1, '=');
112 sbuflen = StrLength(SBuf);
113 for (k = 0; k < sbuflen; k++) {
114 if (ChrPtr(SBuf)[k] == '.') {
115 StrBufPeek(SBuf, NULL, k, '0');
118 ls->priority = StrTol(SBuf);
124 /* get the locale part */
125 StrBufExtract_token(SBuf, Buf, 0, ';');
127 /* get the lang part, which should be allways there */
128 extract_token(ls->lang,
133 /* get the area code if any. */
134 if (StrBufNum_tokens(SBuf, '-') > 1) {
135 extract_token(ls->region,
141 else { /* no ara code? use lang code */
142 blen = strlen(ls->lang);
143 memcpy(ls->region, ls->lang, blen);
144 ls->region[blen] = '\0';
147 /* area codes are uppercase */
148 blen = strlen(&ls->region[0]);
149 for (j = 0; j < blen; j++)
152 chars = toupper(ls->region[j]);
153 ls->region[j] = (char)chars; /* todo ? */
161 /* check if we have this lang */
162 ls->availability = 1;
163 ls->selectedlang = -1;
164 len = strlen(ls->lang);
165 for (j = 0; j < nLocalesLoaded; j++) {
167 /* match against the LANG part */
168 result = strncasecmp(ls->lang, AvailLangLoaded[j], len);
169 if ((result == 0) && (result < ls->availability)){
170 ls->availability = result;
171 ls->selectedlang = j;
173 /* match against lang and locale */
174 if (0 == strcasecmp(lbuf, AvailLangLoaded[j])){
175 ls->availability = 0;
176 ls->selectedlang = j;
185 for (i = 0; ((i < nParts) && (i<SEARCH_LANG)); i++) {
186 ls = &wanted_locales[i];
187 if ( (ls->availability <= 0)
188 && (av < ls->availability)
189 && (prio < ls->priority)
190 && (ls->selectedlang != -1)
192 nBest = ls->selectedlang;
193 av = ls->availability;
201 sess->selected_language = nBest;
202 syslog(LOG_DEBUG, "language found: %s", AvailLangLoaded[sess->selected_language]);
209 * show the language chooser on the login dialog
210 * depending on the browser locale change the sequence of the
213 void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
216 #ifndef HAVE_USELOCALE
217 char *Lang = getenv("LANG");
223 if (nLocalesLoaded == 1) {
224 wc_printf("<p>%s</p>", AvailLangLoaded[0]);
228 wc_printf("<select name=\"language\" id=\"lname\" size=\"1\" onChange=\"switch_to_lang($('lname').value);\">\n");
230 for (i=0; i < nLocalesLoaded; ++i) {
231 #ifndef HAVE_USELOCALE
232 if (strcmp(AvailLangLoaded[i], Lang) == 0)
234 wc_printf("<option %s value=%s>%s</option>\n",
235 ((WC->selected_language == i) ? "selected" : ""),
241 wc_printf("</select>\n");
245 * Set the selected language for this session.
247 void set_selected_language(const char *lang) {
248 #ifdef HAVE_USELOCALE
250 for (i = 0; i<nLocalesLoaded; ++i) {
251 if (!strcasecmp(lang, AvailLangLoaded[i])) {
252 WC->selected_language = i;
260 * Activate the selected language for this session.
262 void go_selected_language(void) {
263 #ifdef HAVE_USELOCALE
265 if (WCC->selected_language < 0)
267 httplang_to_locale(WCC->Hdr->HR.browser_language, WCC);
268 if (WCC->selected_language < 0)
271 uselocale(wc_locales[WCC->selected_language]); /* switch locales */
272 textdomain(textdomain(NULL)); /* clear the cache */
276 language = getenv("LANG");
277 setlocale(LC_MESSAGES, language);
282 * Deactivate the selected language for this session.
284 void stop_selected_language(void) {
285 #ifdef HAVE_USELOCALE
286 uselocale(LC_GLOBAL_LOCALE); /* switch locales */
287 textdomain(textdomain(NULL)); /* clear the cache */
291 #ifdef HAVE_USELOCALE
292 locale_t Empty_Locale;
296 * Create a locale_t for each available language
298 void initialize_locales(void) {
302 char *language = NULL;
305 while (!IsEmptyStr(AvailLang[nLocales]))
308 language = getenv("WEBCIT_LANG");
309 if ((language) && (!IsEmptyStr(language)) && (strcmp(language, "UNLIMITED") != 0)) {
310 syslog(LOG_INFO, "Nailing locale to %s", language);
312 else language = NULL;
314 AvailLangLoaded = malloc (sizeof(char*) * nLocales);
315 memset(AvailLangLoaded, 0, sizeof(char*) * nLocales);
316 #ifdef HAVE_USELOCALE
317 wc_locales = malloc (sizeof(locale_t) * nLocales);
318 memset(wc_locales,0, sizeof(locale_t) * nLocales);
319 /* create default locale */
320 Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);
323 for (i = 0; i < nLocales; ++i) {
324 if ((language != NULL) && (strcmp(AvailLang[i], language) != 0))
327 sprintf(buf, "C"); /* locale 0 (C) is ascii, not utf-8 */
331 sprintf(buf, "%s.UTF8", AvailLang[i]);
333 #ifdef HAVE_USELOCALE
334 wc_locales[nLocalesLoaded] = newlocale(
335 (LC_MESSAGES_MASK|LC_TIME_MASK),
337 (((i > 0) && (wc_locales[0] != NULL)) ? wc_locales[0] : Empty_Locale)
339 if (wc_locales[nLocalesLoaded] == NULL) {
340 syslog(LOG_NOTICE, "locale for %s disabled: %s", buf, strerror(errno));
343 syslog(LOG_INFO, "Found locale: %s - %s", buf, AvailLang[i]);
344 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
348 if ((language != NULL) && (strcmp(language, AvailLang[i]) == 0)) {
349 setenv("LANG", buf, 1);
350 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
351 setlocale(LC_MESSAGES, AvailLang[i]);
354 else if (nLocalesLoaded == 0) {
355 setenv("LANG", buf, 1);
356 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
361 if ((language != NULL) && (nLocalesLoaded == 0)) {
362 syslog(LOG_WARNING, "Your selected locale [%s] isn't available on your system. falling back to C", language);
363 #ifdef HAVE_USELOCALE
364 wc_locales[0] = newlocale(
365 (LC_MESSAGES_MASK|LC_TIME_MASK),
370 setlocale(LC_MESSAGES, AvailLang[0]);
371 setenv("LANG", AvailLang[0], 1);
373 AvailLangLoaded[0] = AvailLang[0];
378 setlocale(LC_ALL, "");
379 syslog(LOG_DEBUG, "Text domain: %s", textdomain("webcit"));
380 syslog(LOG_DEBUG, "Text domain Charset: %s", bind_textdomain_codeset("webcit", "UTF8"));
381 syslog(LOG_DEBUG, "Message catalog directory: %s", bindtextdomain(textdomain(NULL), LOCALEDIR"/locale"));
387 ServerShutdownModule_GETTEXT
390 #ifdef HAVE_USELOCALE
392 for (i = 0; i < nLocalesLoaded; ++i) {
393 if (Empty_Locale != wc_locales[i]) {
394 freelocale(wc_locales[i]);
399 free(AvailLangLoaded);
402 #else /* ENABLE_NLS */
403 const char *AvailLang[] = {
408 /* dummy for non NLS enabled systems */
410 ServerShutdownModule_GETTEXT
416 void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
418 wc_printf("English (US)");
421 /* dummy for non NLS enabled systems */
422 void set_selected_language(const char *lang) {
425 /* dummy for non NLS enabled systems */
426 void go_selected_language(void) {
429 /* dummy for non NLS enabled systems */
430 void stop_selected_language(void) {
433 void initialize_locales(void) {
436 #endif /* ENABLE_NLS */
438 void TmplGettext(StrBuf *Target, WCTemplputParams *TP)
440 const char *Text = _(TP->Tokens->Params[0]->Start);
442 StrBufAppendTemplateStr(Target, TP, Text, 1);
447 * Returns the language currently in use.
448 * This function returns a static string, so don't do anything stupid please.
450 const char *get_selected_language(void) {
452 #ifdef HAVE_USELOCALE
453 return AvailLangLoaded[WC->selected_language];
463 void Header_HandleAcceptLanguage(StrBuf *Line, ParsedHttpHdrs *hdr)
465 hdr->HR.browser_language = Line;
473 initialize_locales();
475 RegisterHeaderHandler(HKEY("ACCEPT-LANGUAGE"),
476 Header_HandleAcceptLanguage);
478 RegisterNamespace("LANG:SELECT", 0, 0,
479 tmplput_offer_languages, NULL, CTX_NONE);
484 SessionNewModule_GETTEXT
489 && (!sess->Hdr->HR.Static)
490 && (sess->Hdr->HR.browser_language != NULL)
492 httplang_to_locale(sess->Hdr->HR.browser_language, sess);
498 SessionAttachModule_GETTEXT
502 go_selected_language(); /* set locale */
507 SessionDestroyModule_GETTEXT
511 stop_selected_language(); /* unset locale */