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[] = {
49 const char **AvailLangLoaded;
50 long nLocalesLoaded = 0;
53 locale_t *wc_locales; /* here we keep the parsed stuff */
56 /* Keep information about one locale */
57 typedef struct _lang_pref {
58 char lang[16]; /* the language locale string */
59 char region[16]; /* the region locale string */
60 long priority; /* which priority does it have */
61 int availability; /* do we know it? */
62 int selectedlang; /* is this the selected language? */
65 /* parse browser locale header
67 * seems as most browsers just do a one after comma value even if more than 10 locales are available. Sample strings:
69 * 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
71 * Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3'
72 * Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3
73 * 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
76 void httplang_to_locale(StrBuf *LocaleString, wcsession *sess)
78 LangStruct wanted_locales[SEARCH_LANG];
84 /* size_t len = strlen(LocaleString); */
92 nParts = StrBufNum_tokens(LocaleString, ',');
93 for (i=0; ((i<nParts) && (i < SEARCH_LANG)); i++)
107 ls = &wanted_locales[i];
109 StrBufExtract_token(Buf, LocaleString, i, ',');
110 /* we are searching, if this list item has something like ;q=n*/
111 if (StrBufNum_tokens(Buf, '=') > 1) {
113 StrBufExtract_token(SBuf, Buf, 1, '=');
114 sbuflen = StrLength(SBuf);
115 for (k = 0; k < sbuflen; k++) {
116 if (ChrPtr(SBuf)[k] == '.') {
117 StrBufPeek(SBuf, NULL, k, '0');
120 ls->priority = StrTol(SBuf);
126 /* get the locale part */
127 StrBufExtract_token(SBuf, Buf, 0, ';');
129 /* get the lang part, which should be allways there */
130 extract_token(ls->lang,
135 /* get the area code if any. */
136 if (StrBufNum_tokens(SBuf, '-') > 1) {
137 extract_token(ls->region,
143 else { /* no ara code? use lang code */
144 blen = strlen(ls->lang);
145 memcpy(ls->region, ls->lang, blen);
146 ls->region[blen] = '\0';
149 /* area codes are uppercase */
150 blen = strlen(&ls->region[0]);
151 for (j = 0; j < blen; j++)
154 chars = toupper(ls->region[j]);
155 ls->region[j] = (char)chars; /* todo ? */
163 /* check if we have this lang */
164 ls->availability = 1;
165 ls->selectedlang = -1;
166 len = strlen(ls->lang);
167 for (j = 0; j < nLocalesLoaded; j++) {
169 /* match against the LANG part */
170 result = strncasecmp(ls->lang, AvailLangLoaded[j], len);
171 if ((result == 0) && (result < ls->availability)){
172 ls->availability = result;
173 ls->selectedlang = j;
175 /* match against lang and locale */
176 if (0 == strcasecmp(lbuf, AvailLangLoaded[j])){
177 ls->availability = 0;
178 ls->selectedlang = j;
187 for (i = 0; ((i < nParts) && (i<SEARCH_LANG)); i++) {
188 ls = &wanted_locales[i];
189 if ( (ls->availability <= 0)
190 && (av < ls->availability)
191 && (prio < ls->priority)
192 && (ls->selectedlang != -1)
194 nBest = ls->selectedlang;
195 av = ls->availability;
203 sess->selected_language = nBest;
204 syslog(LOG_DEBUG, "language found: %s", AvailLangLoaded[sess->selected_language]);
211 * show the language chooser on the login dialog
212 * depending on the browser locale change the sequence of the
215 void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
218 #ifndef HAVE_USELOCALE
219 char *Lang = getenv("LANG");
225 if (nLocalesLoaded == 1) {
226 wc_printf("<p>%s</p>", AvailLangLoaded[0]);
230 wc_printf("<select name=\"language\" id=\"lname\" size=\"1\" onChange=\"switch_to_lang($('lname').value);\">\n");
232 for (i=0; i < nLocalesLoaded; ++i) {
233 #ifndef HAVE_USELOCALE
234 if (strcmp(AvailLangLoaded[i], Lang) == 0)
236 wc_printf("<option %s value=%s>%s</option>\n",
237 ((WC->selected_language == i) ? "selected" : ""),
243 wc_printf("</select>\n");
247 * Set the selected language for this session.
249 void set_selected_language(const char *lang) {
250 #ifdef HAVE_USELOCALE
252 for (i = 0; i<nLocalesLoaded; ++i) {
253 if (!strcasecmp(lang, AvailLangLoaded[i])) {
254 WC->selected_language = i;
262 * Activate the selected language for this session.
264 void go_selected_language(void) {
265 #ifdef HAVE_USELOCALE
267 if (WCC->selected_language < 0)
269 httplang_to_locale(WCC->Hdr->HR.browser_language, WCC);
270 if (WCC->selected_language < 0)
273 uselocale(wc_locales[WCC->selected_language]); /* switch locales */
274 textdomain(textdomain(NULL)); /* clear the cache */
278 language = getenv("LANG");
279 setlocale(LC_MESSAGES, language);
284 * Deactivate the selected language for this session.
286 void stop_selected_language(void) {
287 #ifdef HAVE_USELOCALE
288 uselocale(LC_GLOBAL_LOCALE); /* switch locales */
289 textdomain(textdomain(NULL)); /* clear the cache */
293 #ifdef HAVE_USELOCALE
294 locale_t Empty_Locale;
298 * Create a locale_t for each available language
300 void initialize_locales(void) {
304 char *language = NULL;
307 while (!IsEmptyStr(AvailLang[nLocales]))
310 language = getenv("WEBCIT_LANG");
311 if ((language) && (!IsEmptyStr(language)) && (strcmp(language, "UNLIMITED") != 0)) {
312 syslog(LOG_INFO, "Nailing locale to %s", language);
314 else language = NULL;
316 AvailLangLoaded = malloc (sizeof(char*) * nLocales);
317 memset(AvailLangLoaded, 0, sizeof(char*) * nLocales);
318 #ifdef HAVE_USELOCALE
319 wc_locales = malloc (sizeof(locale_t) * nLocales);
320 memset(wc_locales,0, sizeof(locale_t) * nLocales);
321 /* create default locale */
322 Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);
325 for (i = 0; i < nLocales; ++i) {
326 if ((language != NULL) && (strcmp(AvailLang[i], language) != 0))
329 sprintf(buf, "C"); /* locale 0 (C) is ascii, not utf-8 */
333 sprintf(buf, "%s.UTF8", AvailLang[i]);
335 #ifdef HAVE_USELOCALE
336 wc_locales[nLocalesLoaded] = newlocale(
337 (LC_MESSAGES_MASK|LC_TIME_MASK),
339 (((i > 0) && (wc_locales[0] != NULL)) ? wc_locales[0] : Empty_Locale)
341 if (wc_locales[nLocalesLoaded] == NULL) {
342 syslog(LOG_NOTICE, "locale for %s disabled: %s", buf, strerror(errno));
345 syslog(LOG_INFO, "Found locale: %s - %s", buf, AvailLang[i]);
346 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
350 if ((language != NULL) && (strcmp(language, AvailLang[i]) == 0)) {
351 setenv("LANG", buf, 1);
352 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
353 setlocale(LC_MESSAGES, AvailLang[i]);
356 else if (nLocalesLoaded == 0) {
357 setenv("LANG", buf, 1);
358 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
363 if ((language != NULL) && (nLocalesLoaded == 0)) {
364 syslog(LOG_WARNING, "Your selected locale [%s] isn't available on your system. falling back to C", language);
365 #ifdef HAVE_USELOCALE
366 wc_locales[0] = newlocale(
367 (LC_MESSAGES_MASK|LC_TIME_MASK),
372 setlocale(LC_MESSAGES, AvailLang[0]);
373 setenv("LANG", AvailLang[0], 1);
375 AvailLangLoaded[0] = AvailLang[0];
380 setlocale(LC_ALL, "");
381 syslog(LOG_DEBUG, "Text domain: %s", textdomain("webcit"));
382 syslog(LOG_DEBUG, "Text domain Charset: %s", bind_textdomain_codeset("webcit", "UTF8"));
383 syslog(LOG_DEBUG, "Message catalog directory: %s", bindtextdomain(textdomain(NULL), LOCALEDIR"/locale"));
389 ServerShutdownModule_GETTEXT
392 #ifdef HAVE_USELOCALE
394 for (i = 0; i < nLocalesLoaded; ++i) {
395 if (Empty_Locale != wc_locales[i]) {
396 freelocale(wc_locales[i]);
401 free(AvailLangLoaded);
404 #else /* ENABLE_NLS */
405 const char *AvailLang[] = {
410 /* dummy for non NLS enabled systems */
412 ServerShutdownModule_GETTEXT
418 void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
420 wc_printf("English (US)");
423 /* dummy for non NLS enabled systems */
424 void set_selected_language(const char *lang) {
427 /* dummy for non NLS enabled systems */
428 void go_selected_language(void) {
431 /* dummy for non NLS enabled systems */
432 void stop_selected_language(void) {
435 void initialize_locales(void) {
438 #endif /* ENABLE_NLS */
440 void TmplGettext(StrBuf *Target, WCTemplputParams *TP)
442 const char *Text = _(TP->Tokens->Params[0]->Start);
444 StrBufAppendTemplateStr(Target, TP, Text, 1);
449 * Returns the language currently in use.
450 * This function returns a static string, so don't do anything stupid please.
452 const char *get_selected_language(void) {
454 #ifdef HAVE_USELOCALE
455 return AvailLangLoaded[WC->selected_language];
465 void Header_HandleAcceptLanguage(StrBuf *Line, ParsedHttpHdrs *hdr)
467 hdr->HR.browser_language = Line;
475 initialize_locales();
477 RegisterHeaderHandler(HKEY("ACCEPT-LANGUAGE"),
478 Header_HandleAcceptLanguage);
480 RegisterNamespace("LANG:SELECT", 0, 0,
481 tmplput_offer_languages, NULL, CTX_NONE);
486 SessionNewModule_GETTEXT
491 && (!sess->Hdr->HR.Static)
492 && (sess->Hdr->HR.browser_language != NULL)
494 httplang_to_locale(sess->Hdr->HR.browser_language, sess);
500 SessionAttachModule_GETTEXT
504 go_selected_language(); /* set locale */
509 SessionDestroyModule_GETTEXT
513 stop_selected_language(); /* unset locale */