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[] = {
48 const char **AvailLangLoaded;
49 long nLocalesLoaded = 0;
52 locale_t *wc_locales; /* here we keep the parsed stuff */
55 /* Keep information about one locale */
56 typedef struct _lang_pref {
57 char lang[16]; /* the language locale string */
58 char region[16]; /* the region locale string */
59 long priority; /* which priority does it have */
60 int availability; /* do we know it? */
61 int selectedlang; /* is this the selected language? */
64 /* parse browser locale header
66 * seems as most browsers just do a one after comma value even if more than 10 locales are available. Sample strings:
68 * 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
70 * Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3'
71 * Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3
72 * 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
75 void httplang_to_locale(StrBuf *LocaleString, wcsession *sess)
77 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[0],
133 /* get the area code if any. */
134 if (StrBufNum_tokens(SBuf, '-') > 1) {
135 extract_token(&ls->region[0],
141 else { /* no ara code? use lang code */
142 blen=strlen(&ls->lang[0]);
143 memcpy(&ls->region[0], 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 for (j = 0; j < nLocalesLoaded; j++) {
166 /* match against the LANG part */
167 result = strcasecmp(&ls->lang[0], AvailLangLoaded[j]);
168 if ((result < 0) && (result < ls->availability)){
169 ls->availability = result;
170 ls->selectedlang = j;
172 /* match against lang and locale */
173 if (0 == strcasecmp(&lbuf[0], AvailLangLoaded[j])){
174 ls->availability = 0;
175 ls->selectedlang = j;
184 for (i = 0; ((i < nParts) && (i<SEARCH_LANG)); i++) {
185 ls = &wanted_locales[i];
186 if ( (ls->availability <= 0)
187 && (av < ls->availability)
188 && (prio < ls->priority)
189 && (ls->selectedlang != -1)
191 nBest = ls->selectedlang;
192 av = ls->availability;
200 sess->selected_language = nBest;
201 syslog(LOG_DEBUG, "language found: %s", AvailLangLoaded[WC->selected_language]);
208 * show the language chooser on the login dialog
209 * depending on the browser locale change the sequence of the
212 void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
215 #ifndef HAVE_USELOCALE
216 char *Lang = getenv("LANG");
222 if (nLocalesLoaded == 1) {
223 wc_printf("<p>%s</p>", AvailLangLoaded[0]);
227 wc_printf("<select name=\"language\" id=\"lname\" size=\"1\" onChange=\"switch_to_lang($('lname').value);\">\n");
229 for (i=0; i < nLocalesLoaded; ++i) {
230 #ifndef HAVE_USELOCALE
231 if (strcmp(AvailLangLoaded[i], Lang) == 0)
233 wc_printf("<option %s value=%s>%s</option>\n",
234 ((WC->selected_language == i) ? "selected" : ""),
240 wc_printf("</select>\n");
244 * Set the selected language for this session.
246 void set_selected_language(const char *lang) {
247 #ifdef HAVE_USELOCALE
249 for (i = 0; i<nLocalesLoaded; ++i) {
250 if (!strcasecmp(lang, AvailLangLoaded[i])) {
251 WC->selected_language = i;
259 * Activate the selected language for this session.
261 void go_selected_language(void) {
262 #ifdef HAVE_USELOCALE
264 if (WCC->selected_language < 0) return;
265 uselocale(wc_locales[WCC->selected_language]); /* switch locales */
266 textdomain(textdomain(NULL)); /* clear the cache */
270 language = getenv("LANG");
271 setlocale(LC_MESSAGES, language);
276 * Deactivate the selected language for this session.
278 void stop_selected_language(void) {
279 #ifdef HAVE_USELOCALE
280 uselocale(LC_GLOBAL_LOCALE); /* switch locales */
281 textdomain(textdomain(NULL)); /* clear the cache */
285 #ifdef HAVE_USELOCALE
286 locale_t Empty_Locale;
290 * Create a locale_t for each available language
292 void initialize_locales(void) {
296 char *language = NULL;
299 while (!IsEmptyStr(AvailLang[nLocales]))
302 language = getenv("WEBCIT_LANG");
303 if ((language) && (!IsEmptyStr(language)) && (strcmp(language, "UNLIMITED") != 0)) {
304 syslog(LOG_INFO, "Nailing locale to %s", language);
306 else language = NULL;
308 AvailLangLoaded = malloc (sizeof(char*) * nLocales);
309 memset(AvailLangLoaded, 0, sizeof(char*) * nLocales);
310 #ifdef HAVE_USELOCALE
311 wc_locales = malloc (sizeof(locale_t) * nLocales);
312 memset(wc_locales,0, sizeof(locale_t) * nLocales);
313 /* create default locale */
314 Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);
317 for (i = 0; i < nLocales; ++i) {
318 if ((language != NULL) && (strcmp(AvailLang[i], language) != 0))
321 sprintf(buf, "%s", AvailLang[i]); /* locale 0 (C) is ascii, not utf-8 */
324 sprintf(buf, "%s.UTF8", AvailLang[i]);
326 #ifdef HAVE_USELOCALE
327 wc_locales[nLocalesLoaded] = newlocale(
328 (LC_MESSAGES_MASK|LC_TIME_MASK),
330 (((i > 0) && (wc_locales[0] != NULL)) ? wc_locales[0] : Empty_Locale)
332 if (wc_locales[nLocalesLoaded] == NULL) {
333 syslog(LOG_NOTICE, "locale for %s disabled: %s", buf, strerror(errno));
336 syslog(LOG_INFO, "Found locale: %s", buf);
337 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
341 if ((language != NULL) && (strcmp(language, AvailLang[i]) == 0)) {
342 setenv("LANG", buf, 1);
343 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
344 setlocale(LC_MESSAGES, AvailLang[i]);
347 else if (nLocalesLoaded == 0) {
348 setenv("LANG", buf, 1);
349 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
354 if ((language != NULL) && (nLocalesLoaded == 0)) {
355 syslog(LOG_WARNING, "Your selected locale [%s] isn't available on your system. falling back to C", language);
356 #ifdef HAVE_USELOCALE
357 wc_locales[0] = newlocale(
358 (LC_MESSAGES_MASK|LC_TIME_MASK),
363 setlocale(LC_MESSAGES, AvailLang[0]);
364 setenv("LANG", AvailLang[0], 1);
366 AvailLangLoaded[0] = AvailLang[0];
371 setlocale(LC_ALL, "");
372 syslog(LOG_DEBUG, "Text domain: %s", textdomain("webcit"));
373 syslog(LOG_DEBUG, "Text domain Charset: %s", bind_textdomain_codeset("webcit", "UTF8"));
374 syslog(LOG_DEBUG, "Message catalog directory: %s", bindtextdomain(textdomain(NULL), LOCALEDIR"/locale"));
380 ServerShutdownModule_GETTEXT
383 #ifdef HAVE_USELOCALE
385 for (i = 0; i < nLocalesLoaded; ++i) {
386 if (Empty_Locale != wc_locales[i]) {
387 freelocale(wc_locales[i]);
392 free(AvailLangLoaded);
395 #else /* ENABLE_NLS */
396 const char *AvailLang[] = {
401 /* dummy for non NLS enabled systems */
403 ServerShutdownModule_GETTEXT
409 void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
411 wc_printf("English (US)");
414 /* dummy for non NLS enabled systems */
415 void set_selected_language(const char *lang) {
418 /* dummy for non NLS enabled systems */
419 void go_selected_language(void) {
422 /* dummy for non NLS enabled systems */
423 void stop_selected_language(void) {
426 void initialize_locales(void) {
429 #endif /* ENABLE_NLS */
432 void TmplGettext(StrBuf *Target, WCTemplputParams *TP)
434 StrBufAppendBufPlain(Target, _(TP->Tokens->Params[0]->Start), -1, 0);
439 * Returns the language currently in use.
440 * This function returns a static string, so don't do anything stupid please.
442 const char *get_selected_language(void) {
444 #ifdef HAVE_USELOCALE
445 return AvailLang[WC->selected_language];
455 void Header_HandleAcceptLanguage(StrBuf *Line, ParsedHttpHdrs *hdr)
457 hdr->HR.browser_language = Line;
465 initialize_locales();
467 RegisterHeaderHandler(HKEY("ACCEPT-LANGUAGE"),
468 Header_HandleAcceptLanguage);
470 RegisterNamespace("LANG:SELECT", 0, 0,
471 tmplput_offer_languages, NULL, CTX_NONE);
476 SessionNewModule_GETTEXT
481 && (!sess->Hdr->HR.Static)
482 && (sess->Hdr->HR.browser_language != NULL)
484 httplang_to_locale(sess->Hdr->HR.browser_language, sess);
490 SessionAttachModule_GETTEXT
494 go_selected_language(); /* set locale */
499 SessionDestroyModule_GETTEXT
503 stop_selected_language(); /* unset locale */