X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=webcit%2Fgettext.c;h=f055ee5a320f9a7742d3d57ff1ec288f302b542f;hb=8c321fbcc2a64f0d0627562fdf5651442e525ab1;hp=e0978b2c059b040645ccb84b328237463c23cf60;hpb=4760d0fc8089130b066045fa60d312030b0a34e3;p=citadel.git

diff --git a/webcit/gettext.c b/webcit/gettext.c
index e0978b2c0..f055ee5a3 100644
--- a/webcit/gettext.c
+++ b/webcit/gettext.c
@@ -1,144 +1,396 @@
-#define _GNU_SOURCE
+/*
+ * $Id$
+ */
+
 #include "webcit.h"
 #include "webserver.h"
 
 #ifdef ENABLE_NLS
 
-static const char *AvailLang[] = {
-	"de_DE"
+#define NUM_LANGS 10		/* how many different locales do we know? */
+#define SEARCH_LANG 20		/* how many langs should we parse? */
+
+/* actual supported locales */
+const char *AvailLang[NUM_LANGS] = {
+	"C",
+	"en_US",
+	"de_DE",
+	"it_IT",
+	"es_ES",
+	"en_GB",
+	"da_DK",
+	"fr_FR",
+	"nl_NL",
+	"pt_BR"
 };
 
+const char *AvailLangLoaded[NUM_LANGS];
+long nLocalesLoaded = 0;
+
+#ifdef HAVE_USELOCALE
+locale_t wc_locales[NUM_LANGS]; /**< here we keep the parsed stuff */
+#endif
+
+/** Keep information about one locale */
 typedef struct _lang_pref{
-	char lang[16];
-	char region[16];
-	char *match;
-	double Priority;
+	char lang[16];          /**< the language locale string */
+	char region[16];        /**< the region locale string */
+	long priority;          /**< which priority does it have */
+	int availability;       /**< do we know it? */
+	int selectedlang;       /**< is this the selected language? */
 } LangStruct;
 
-/* TODO: we skip the language weightening so far. */
-/* Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3' */
-/* Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3 */
-void httplang_to_locale(const char *LocaleString)
+/* \brief parse browser locale header 
+ * seems as most browsers just do a one after coma value even if more than 10 locales are available. Sample strings:
+ * opera: 
+ * 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 
+ * Firefox 
+ * Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3' 
+ * Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3 
+ * 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 
+ * \param LocaleString the string from the browser http headers
+ */
+
+void httplang_to_locale(StrBuf *LocaleString)
 {
-	char *locale = "C";
-	LangStruct wanted_locales[20];
+	LangStruct wanted_locales[SEARCH_LANG];
+	LangStruct *ls;
+
 	int i = 0;
 	int j = 0;
-	size_t len = strlen(LocaleString);
-	int nFound = 0;
+	/* size_t len = strlen(LocaleString); */
+	long prio;
+	int av;
+	int nBest;
 	int nParts;
-	const int nAvail = 1; /* Number of members in AvailLang */
-	char *search = (char *) malloc(len);
-	locale_t my_Locale;
-	locale_t my_Empty_Locale;
-
-	memcpy(search, LocaleString, len);
-	search[len] = '\0';
-	nParts=num_tokens(search,',');
-	for (i=0; ((i<nParts)&&(i<10)); i++)
-	{
-		char buf[16];
-		char sbuf[16];
+	StrBuf *Buf = NULL;
+	StrBuf *SBuf;
+	
+	nParts=StrBufNum_tokens(LocaleString,',');
+	for (i=0; ((i<nParts)&&(i<SEARCH_LANG)); i++)
+        {
+		char lbuf[16];
 		int blen;
+			
+		if (Buf == NULL) {
+			Buf = NewStrBuf();
+			SBuf = NewStrBuf();
+		}
+		else {
+			FlushStrBuf(Buf);
+			FlushStrBuf(SBuf);
+		}
+
+		ls=&wanted_locales[i];
 
-		extract_token(&buf[0],search, 0,',',16);
-		/* we are searching, if this list item has something like ;q=n*/
-		if (num_tokens(&buf[0],'=')>1) {
-			extract_token(&sbuf[0],&buf[0], 1,'=',16);
-			wanted_locales[i].Priority=atof(&sbuf[0]);
+		StrBufExtract_token(Buf,LocaleString, i,',');
+		/** we are searching, if this list item has something like ;q=n*/
+		if (StrBufNum_tokens(Buf,'=')>1) {
+			int sbuflen, k;
+			StrBufExtract_token(SBuf,Buf, 1,'=');
+			sbuflen=StrLength(SBuf);
+			for (k=0; k<sbuflen; k++) 
+				if (ChrPtr(SBuf)[k]=='.') 
+					StrBufPeek(SBuf, NULL, k, '0');
+			ls->priority=StrTol(SBuf);
 		}
 		else {
-			wanted_locales[i].Priority=1.0;
+			ls->priority=1000;
 		}
-		/* get the locale part */
-		extract_token(&sbuf[0],&buf[0],0,';',16);
-		/* get the lang part, which should be allways there */
-		extract_token(&wanted_locales[i].lang[0],&sbuf[0],0,'-',16);
-		/* get the area code if any. */
-		if (num_tokens(&sbuf[0],'-')>1)	{
-			extract_token(&wanted_locales[i].region[0],&sbuf[0],1,'-',16);
+		/** get the locale part */
+		StrBufExtract_token(SBuf ,Buf, 0, ';');
+		/** get the lang part, which should be allways there */
+		extract_token(&ls->lang[0], ChrPtr(SBuf), 0, '-', 16);
+		/** get the area code if any. */
+		if (StrBufNum_tokens(SBuf,'-') > 1) {
+			extract_token(&ls->region[0],ChrPtr(SBuf),1,'-',16);
 		}
-		else { /* no ara code? use lang code */
-			blen=strlen(&wanted_locales[i].lang[0]);
-			memcpy(&wanted_locales[i].region[0], wanted_locales[i].lang,blen);
-			wanted_locales[i].region[blen]='\0';
-		} /* area codes are uppercase */
-		blen=strlen(&wanted_locales[i].region[0]);
+		else { /** no ara code? use lang code */
+			blen=strlen(&ls->lang[0]);
+			memcpy(&ls->region[0], ls->lang,blen);
+			ls->region[blen]='\0';
+		} /** area codes are uppercase */
+		blen=strlen(&ls->region[0]);
 		for (j=0; j<blen; j++)
-			{
-				int chars=toupper(wanted_locales[i].region[j]);
-				wanted_locales[i].region[j]=(char)chars;/*todo ?! */
+		{
+			int chars=toupper(ls->region[j]);
+			ls->region[j]=(char)chars;/** \todo ?! */
+		}
+		sprintf(&lbuf[0],"%s_%s",&ls->lang[0],&ls->region[0]);
+			
+		/** check if we have this lang */
+		ls->availability=1;
+		ls->selectedlang=-1;
+		for (j=0; j<nLocalesLoaded; j++) {
+			int result;
+			/** match against the LANG part */
+			result=strcasecmp(&ls->lang[0], AvailLangLoaded[j]);
+			if ((result<0)&&(result<ls->availability)){
+				ls->availability=result;
+				ls->selectedlang=j;
 			}
+			/** match against lang and locale */
+			if (0==strcasecmp(&lbuf[0], AvailLangLoaded[j])){
+				ls->availability=0;
+				ls->selectedlang=j;
+				j=nLocalesLoaded;
+			}
+		}
+        }
+	
+	prio=0;
+	av=-1000;
+	nBest=-1;
+	for (i=0; ((i<nParts)&&(i<SEARCH_LANG)); i++) {
+		ls=&wanted_locales[i];
+		if ((ls->availability<=0)&& 
+		   (av<ls->availability)&&
+		   (prio<ls->priority)&&
+		   (ls->selectedlang!=-1)) {
+			nBest=ls->selectedlang;
+			av=ls->availability;
+			prio=ls->priority;
+		}
+	}
+	if (nBest == -1) {
+		/** fall back to C */
+		nBest=0;
+	}
+	WC->selected_language=nBest;
+	lprintf(9, "language found: %s\n", AvailLangLoaded[WC->selected_language]);
+	FreeStrBuf(&Buf);
+	FreeStrBuf(&SBuf);
+}
+
+/* TODO: we skip the language weighting so far. */
+/* Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3' */
+/* Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3 */
+//void httplang_to_locale(char *LocaleString)
+//{
+//	char selected_locale[16];
+//	int i, j;
+//	char lang[64];
+//	int num_accept = 0;
+//
+//	lprintf(9, "languageAccept: %s\n", LocaleString);
+//
+//	strcpy(selected_locale, "C");
+//	num_accept = num_tokens(LocaleString, ',');
+//
+//	for (i=num_accept-1; i>=0; --i) {
+//		extract_token(lang, LocaleString, i, ',', sizeof lang);
+//
+//		/* Strip out the weights; we don't use them.  Also convert
+//		 * hyphens to underscores.
+//		 */
+//		for (j=0; j<strlen(lang); ++j) {
+//			if (lang[j] == '-') lang[j] = '_';
+//			if (lang[j] == ';') lang[j] = 0;
+//		}
+//
+//		for (j=0; j<NUM_LANGS; ++j) {
+//			if (!strncasecmp(lang, AvailLang[j], strlen(lang))) {
+//				strcpy(selected_locale, AvailLang[j]);
+//			}
+//		}
+//	}
+//
+//	lprintf(9, "language found: %s\n", selected_locale);
+//	set_selected_language(selected_locale);
+//}
+
+
+/**
+ * \brief show the language chooser on the login dialog
+ * depending on the browser locale change the sequence of the 
+ * language chooser.
+ */
+void tmplput_offer_languages(StrBuf *Target, int nArgs, WCTemplateToken *Tokens, void *Context, int ContextType) {
+	int i;
+#ifndef HAVE_USELOCALE
+	char *Lang = getenv("LANG");
+	
+	if (Lang == NULL)
+		Lang = "C";
+#endif
+
+	wprintf("<select name=\"language\" id=\"lname\" size=\"1\">\n");
+
+	for (i=0; i < nLocalesLoaded; ++i) {
+#ifndef HAVE_USELOCALE
+		if (strcmp(AvailLangLoaded[i], Lang) == 0)
+#endif
+		wprintf("<option %s value=%s>%s</option>\n",
+			((WC->selected_language == i) ? "selected" : ""),
+			AvailLangLoaded[i],
+			AvailLangLoaded[i]
+		);
 	}
 
-	/* todo: weight  */
-	if (nFound > 0) {
-		for (i = 0; i <= nFound; i++) {
-			for (j = 0; j < nAvail; j++) {
-				int ret = strncasecmp(&wanted_locales[i].lang[0],
-									  AvailLang[j],
-									  strlen(&wanted_locales[i].lang[0]));
-				if (!ret) {
-					locale = (char *) AvailLang[j];	//wanted_locales[i];
-					i = nFound + 1;
-					j = nAvail + 1;
-					continue;
-				}
-				
-			}
+	wprintf("</select>\n");
+}
+
+/**
+ * \brief Set the selected language for this session.
+ * \param lang the locale to set.
+ */
+void set_selected_language(const char *lang) {
+	int i;
+
+#ifdef HAVE_USELOCALE
+	for (i=0; i<nLocalesLoaded; ++i) {
+		if (!strcasecmp(lang, AvailLangLoaded[i])) {
+			WC->selected_language = i;
 		}
 	}
+#endif
+}
 
-	len = strlen(locale);
-	memcpy(search, locale, len);
-	memcpy(&search[len], ".UTF8", 5);
-	search[len + 5] = '\0';
-	my_Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);	/* create default locale */
-	my_Locale = newlocale(LC_MESSAGES_MASK /*|LC_TIME_MASK FIXME */ ,
-			      search, my_Empty_Locale);
+/**
+ * \brief Activate the selected language for this session.
+ */
+void go_selected_language(void) {
+#ifdef HAVE_USELOCALE
+	wcsession *WCC = WC;
+	if (WCC->selected_language < 0) return;
+	uselocale(wc_locales[WCC->selected_language]);	/** switch locales */
+	textdomain(textdomain(NULL));			/** clear the cache */
+#else
+	char *language;
+	
+	language = getenv("LANG");
+	setlocale(LC_MESSAGES, language);
+#endif
+}
 
-	uselocale(my_Locale);
-	//      freelocale(my_Locale);
-	//      freelocale(my_Empty_Locale);
-	free(search);
+/**
+ * \brief Deactivate the selected language for this session.
+ */
+void stop_selected_language(void) {
+#ifdef HAVE_USELOCALE
+	uselocale(LC_GLOBAL_LOCALE);			/** switch locales */
+	textdomain(textdomain(NULL));			/** clear the cache */
+#endif
 }
 
+void preset_locale(void)
+{
+#ifndef HAVE_USELOCALE
+#ifdef HAVE_GETTEXT
+	char *language;
+	
+	lprintf(9, "Nailing locale to %s\n", getenv("LANG"));
+	language = getenv("LANG");
+	setlocale(LC_MESSAGES, language);
+#endif
 #endif
+}
 
+#ifdef HAVE_USELOCALE
+	locale_t Empty_Locale;
+#endif
 
-/*
-	// the web browser sends '-', we need '_' 
+/**
+ * \brief Create a locale_t for each available language
+ */
+void initialize_locales(void) {
+	int i;
+	char buf[32];
 
-		for (i = 0; i < len; i++)
-		if (search[i] == '-')
-			search[i] = '_';
+#ifdef HAVE_USELOCALE
+	/* create default locale */
+	Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);
+#endif
 
-	nFound=i;
-	nParts=num_tokens(search,',');
-	if (nParts>0)
-		{
-			extract_token(prefers,search, 1,';',len);
-			extract_token(langs,search, 0,';',len);
+	for (i = 0; i < NUM_LANGS; ++i) {
+		if (i == 0) {
+			sprintf(buf, "%s", AvailLang[i]);	// locale 0 (C) is ascii, not utf-8
 		}
-	else
-		{
-			free(prefers);
-			prefers=NULL;
-			memcpy(search, len);
-			search[len] = '\0';
+		else {
+			sprintf(buf, "%s.UTF8", AvailLang[i]);
 		}
-	i = 0;
-	while ( !done && (nFound < 10)) {
-		if ((search[i] == ',') || (search[i] == ';') || (search[i] == '\0'))
-		{
-			if ((search[i] == ';') || (search[i] == '\0'))
-				done = 1;
-			search[i] = '\0';
-			wanted_locales[nFound] = (char *) &search[j];
-			j = i + 1;
-			nFound++;
+#ifdef HAVE_USELOCALE
+		wc_locales[nLocalesLoaded] = newlocale(
+			(LC_MESSAGES_MASK|LC_TIME_MASK),
+			buf,
+			(((i > 0) && (wc_locales[0] != NULL)) ? wc_locales[0] : Empty_Locale)
+		);
+		if (wc_locales[nLocalesLoaded] == NULL) {
+			lprintf(1, "Error configuring locale for %s: %s\n",
+				buf,
+				strerror(errno)
+			);
 		}
+		else {
+			lprintf(3, "Configured available locale: %s\n", buf);
+			AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
+			nLocalesLoaded++;
+		}
+#endif
+	}
+}
+
 
-		i++;
+void ShutdownLocale(void)
+{
+	int i;
+#ifdef HAVE_USELOCALE
+	for (i = 0; i < nLocalesLoaded; ++i) {
+		if (Empty_Locale != wc_locales[i])
+			freelocale(wc_locales[i]);
 	}
-*/
+#endif
+}
+
+#else	/* ENABLE_NLS */
+/** \brief dummy for non NLS enabled systems */
+void tmplput_offer_languages(StrBuf *Target, int nArgs, WCTemplateToken *Tokens, void *Context, int ContextType) {
+	wprintf("English (US)");
+}
+
+/** \brief dummy for non NLS enabled systems */
+void set_selected_language(char *lang) {
+}
+
+/** \brief dummy for non NLS enabled systems */
+void go_selected_language(void) {
+}
+
+/** \brief dummy for non NLS enabled systems */
+void stop_selected_language(void) {
+}
+
+void preset_locale(void)
+{
+}
+#endif	/* ENABLE_NLS */
+
+
+void TmplGettext(StrBuf *Target, int nTokens, WCTemplateToken *Tokens)
+{
+	StrBufAppendBufPlain(Target, _(Tokens->Params[0]->Start), -1, 0);
+}
+
+
+/*
+ * Returns the language currently in use.
+ * This function returns a static string, so don't do anything stupid please.
+ */
+const char *get_selected_language(void) {
+#ifdef ENABLE_NLS
+#ifdef HAVE_USELOCALE
+	return AvailLang[WC->selected_language];
+#else
+	return "en"
+#endif
+#else
+	return "en"
+#endif
+}
+
+void 
+InitModule_GETTEXT
+(void)
+{
+	RegisterNamespace("LANG:SELECT", 0, 0, tmplput_offer_languages, CTX_NONE);
+}