3 * Copyright (c) 1996-2012 by the citadel.org team
5 * This program is open source software. You can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 3.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
15 #include "webserver.h"
16 #define SEARCH_LANG 20 /* how many langs should we parse? */
20 /* actual supported locales */
21 const char *AvailLang[] = {
51 const char **AvailLangLoaded;
52 long nLocalesLoaded = 0;
55 locale_t *wc_locales; /* here we keep the parsed stuff */
58 /* Keep information about one locale */
59 typedef struct _lang_pref {
60 char lang[16]; /* the language locale string */
61 char region[16]; /* the region locale string */
62 long priority; /* which priority does it have */
63 int availability; /* do we know it? */
64 int selectedlang; /* is this the selected language? */
67 /* parse browser locale header
69 * seems as most browsers just do a one after comma value even if more than 10 locales are available. Sample strings:
71 * 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
73 * Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3'
74 * Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3
75 * 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
78 void httplang_to_locale(StrBuf * LocaleString, wcsession * sess) {
79 LangStruct wanted_locales[SEARCH_LANG];
85 /* size_t len = strlen(LocaleString); */
93 nParts = StrBufNum_tokens(LocaleString, ',');
94 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, ChrPtr(SBuf), 0, '-', sizeof(ls->lang));
132 /* get the area code if any. */
133 if (StrBufNum_tokens(SBuf, '-') > 1) {
134 extract_token(ls->region, ChrPtr(SBuf), 1, '-', sizeof(ls->region)
137 else { /* no ara code? use lang code */
138 blen = strlen(ls->lang);
139 memcpy(ls->region, ls->lang, blen);
140 ls->region[blen] = '\0';
143 /* area codes are uppercase */
144 blen = strlen(&ls->region[0]);
145 for (j = 0; j < blen; j++) {
147 chars = toupper(ls->region[j]);
148 ls->region[j] = (char) chars; /* todo ? */
150 snprintf(lbuf, sizeof(lbuf), "%s_%s", ls->lang, ls->region);
152 /* check if we have this lang */
153 ls->availability = 1;
154 ls->selectedlang = -1;
155 len = strlen(ls->lang);
156 for (j = 0; j < nLocalesLoaded; j++) {
158 /* match against the LANG part */
159 result = strncasecmp(ls->lang, AvailLangLoaded[j], len);
160 if ((result == 0) && (result < ls->availability)) {
161 ls->availability = result;
162 ls->selectedlang = j;
164 /* match against lang and locale */
165 if (0 == strcasecmp(lbuf, AvailLangLoaded[j])) {
166 ls->availability = 0;
167 ls->selectedlang = j;
176 for (i = 0; ((i < nParts) && (i < SEARCH_LANG)); i++) {
177 ls = &wanted_locales[i];
178 if ((ls->availability <= 0)
179 && (av < ls->availability)
180 && (prio < ls->priority)
181 && (ls->selectedlang != -1)
183 nBest = ls->selectedlang;
184 av = ls->availability;
192 sess->selected_language = nBest;
193 syslog(LOG_DEBUG, "language found: %s", AvailLangLoaded[sess->selected_language]);
200 * show the language chooser on the login dialog
201 * depending on the browser locale change the sequence of the
204 void tmplput_offer_languages(StrBuf * Target, WCTemplputParams * TP) {
206 #ifndef HAVE_USELOCALE
207 char *Lang = getenv("LANG");
213 if (nLocalesLoaded == 1) {
214 wc_printf("<p>%s</p>", AvailLangLoaded[0]);
218 wc_printf("<select name=\"language\" id=\"lname\" size=\"1\" onChange=\"switch_to_lang($('lname').value);\">\n");
220 for (i = 0; i < nLocalesLoaded; ++i) {
221 #ifndef HAVE_USELOCALE
222 if (strcmp(AvailLangLoaded[i], Lang) == 0)
224 wc_printf("<option %s value=%s>%s</option>\n",
225 ((WC->selected_language == i) ? "selected" : ""), AvailLangLoaded[i], AvailLangLoaded[i]
229 wc_printf("</select>\n");
233 * Set the selected language for this session.
235 void set_selected_language(const char *lang) {
236 #ifdef HAVE_USELOCALE
238 for (i = 0; i < nLocalesLoaded; ++i) {
239 if (!strcasecmp(lang, AvailLangLoaded[i])) {
240 WC->selected_language = i;
248 * Activate the selected language for this session.
250 void go_selected_language(void) {
251 #ifdef HAVE_USELOCALE
253 if (WCC->selected_language < 0) {
254 httplang_to_locale(WCC->Hdr->HR.browser_language, WCC);
255 if (WCC->selected_language < 0)
258 uselocale(wc_locales[WCC->selected_language]); /* switch locales */
259 textdomain(textdomain(NULL)); /* clear the cache */
263 language = getenv("LANG");
264 setlocale(LC_MESSAGES, language);
269 * Deactivate the selected language for this session.
271 void stop_selected_language(void) {
272 #ifdef HAVE_USELOCALE
273 uselocale(LC_GLOBAL_LOCALE); /* switch locales */
274 textdomain(textdomain(NULL)); /* clear the cache */
278 #ifdef HAVE_USELOCALE
279 locale_t Empty_Locale;
283 * Create a locale_t for each available language
285 void initialize_locales(void) {
289 char *language = NULL;
292 while (!IsEmptyStr(AvailLang[nLocales]))
295 language = getenv("WEBCIT_LANG");
296 if ((language) && (!IsEmptyStr(language)) && (strcmp(language, "UNLIMITED") != 0)) {
297 syslog(LOG_INFO, "Nailing locale to %s", language);
302 AvailLangLoaded = malloc(sizeof(char *) * nLocales);
303 memset(AvailLangLoaded, 0, sizeof(char *) * nLocales);
304 #ifdef HAVE_USELOCALE
305 wc_locales = malloc(sizeof(locale_t) * nLocales);
306 memset(wc_locales, 0, sizeof(locale_t) * nLocales);
307 /* create default locale */
308 Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);
311 for (i = 0; i < nLocales; ++i) {
312 if ((language != NULL) && (strcmp(AvailLang[i], language) != 0))
315 sprintf(buf, "C"); /* locale 0 (C) is ascii, not utf-8 */
319 sprintf(buf, "%s.UTF8", AvailLang[i]);
321 #ifdef HAVE_USELOCALE
322 wc_locales[nLocalesLoaded] = newlocale((LC_MESSAGES_MASK | LC_TIME_MASK),
323 buf, (((i > 0) && (wc_locales[0] != NULL)) ? wc_locales[0] : Empty_Locale)
325 if (wc_locales[nLocalesLoaded] == NULL) {
326 syslog(LOG_NOTICE, "locale for %s disabled: %s", buf, strerror(errno));
329 syslog(LOG_INFO, "Found locale: %s - %s", buf, AvailLang[i]);
330 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
334 if ((language != NULL) && (strcmp(language, AvailLang[i]) == 0)) {
335 setenv("LANG", buf, 1);
336 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
337 setlocale(LC_MESSAGES, AvailLang[i]);
340 else if (nLocalesLoaded == 0) {
341 setenv("LANG", buf, 1);
342 AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
347 if ((language != NULL) && (nLocalesLoaded == 0)) {
348 syslog(LOG_WARNING, "Your selected locale [%s] isn't available on your system. falling back to C", language);
349 #ifdef HAVE_USELOCALE
350 wc_locales[0] = newlocale((LC_MESSAGES_MASK | LC_TIME_MASK), AvailLang[0], Empty_Locale);
352 setlocale(LC_MESSAGES, AvailLang[0]);
353 setenv("LANG", AvailLang[0], 1);
355 AvailLangLoaded[0] = AvailLang[0];
360 setlocale(LC_ALL, "");
361 syslog(LOG_DEBUG, "Text domain: %s", textdomain("webcit"));
362 syslog(LOG_DEBUG, "Text domain Charset: %s", bind_textdomain_codeset("webcit", "UTF8"));
363 syslog(LOG_DEBUG, "Message catalog directory: %s", bindtextdomain(textdomain(NULL), LOCALEDIR "/locale"));
368 void ServerShutdownModule_GETTEXT(void) {
369 #ifdef HAVE_USELOCALE
371 for (i = 0; i < nLocalesLoaded; ++i) {
372 if (Empty_Locale != wc_locales[i]) {
373 freelocale(wc_locales[i]);
378 free(AvailLangLoaded);
381 #else /* ENABLE_NLS */
382 const char *AvailLang[] = {
387 /* dummy for non NLS enabled systems */
389 ServerShutdownModule_GETTEXT(void) {
393 void tmplput_offer_languages(StrBuf * Target, WCTemplputParams * TP) {
394 wc_printf("English (US)");
397 /* dummy for non NLS enabled systems */
398 void set_selected_language(const char *lang) {
401 /* dummy for non NLS enabled systems */
402 void go_selected_language(void) {
405 /* dummy for non NLS enabled systems */
406 void stop_selected_language(void) {
409 void initialize_locales(void) {
412 #endif /* ENABLE_NLS */
414 void TmplGettext(StrBuf * Target, WCTemplputParams * TP) {
415 const char *Text = _(TP->Tokens->Params[0]->Start);
417 StrBufAppendTemplateStr(Target, TP, Text, 1);
422 * Returns the language currently in use.
423 * This function returns a static string, so don't do anything stupid please.
425 const char *get_selected_language(void) {
427 #ifdef HAVE_USELOCALE
428 return AvailLangLoaded[WC->selected_language];
438 void Header_HandleAcceptLanguage(StrBuf * Line, ParsedHttpHdrs * hdr) {
439 hdr->HR.browser_language = Line;
443 void InitModule_GETTEXT(void) {
444 initialize_locales();
446 RegisterHeaderHandler(HKEY("ACCEPT-LANGUAGE"), Header_HandleAcceptLanguage);
448 RegisterNamespace("LANG:SELECT", 0, 0, tmplput_offer_languages, NULL, CTX_NONE);
452 void SessionNewModule_GETTEXT(wcsession * sess) {
455 && (!sess->Hdr->HR.Static)
456 && (sess->Hdr->HR.browser_language != NULL)
458 httplang_to_locale(sess->Hdr->HR.browser_language, sess);
463 void SessionAttachModule_GETTEXT(wcsession * sess) {
465 go_selected_language(); /* set locale */
469 void SessionDestroyModule_GETTEXT(wcsession * sess) {
471 stop_selected_language(); /* unset locale */