+/*
+ * $Id
+ */
+/**
+ * \defgroup LocaleHeaderParser Parse the browser http locale headers and set the NLS stuff.
+ * \ingroup WebcitHttpServer
+ */
+/*@{*/
+/** we need _GNU_SOURCE for various functions arround the NLS-Stuff */
#define _GNU_SOURCE
#include "webcit.h"
#include "webserver.h"
#ifdef ENABLE_NLS
-#define NUM_LANGS 3
-static const char *AvailLang[NUM_LANGS] = {
+#define NUM_LANGS 5 /**< how many different locales do we know? */
+#define SEARCH_LANG 20 /**< how many langs should we parse? */
+
+/** actual supported locales */
+char *AvailLang[NUM_LANGS] = {
+ "C",
"en_US",
"de_DE",
- "it_IT"
+ "it_IT",
+ "en_GB"
};
-locale_t wc_locales[NUM_LANGS];
+locale_t wc_locales[NUM_LANGS]; /**< here we keep the parsed stuff */
+/** 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(char *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;
+ 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;
-
+ // 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];
- int blen;
-
- 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]);
- }
- else {
- wanted_locales[i].Priority=1.0;
- }
- /* 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);
- }
- 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]);
- for (j=0; j<blen; j++)
- {
- int chars=toupper(wanted_locales[i].region[j]);
- wanted_locales[i].region[j]=(char)chars;/*todo ?! */
+ for (i=0; ((i<nParts)&&(i<SEARCH_LANG)); i++)
+ {
+ char buf[16];
+ char sbuf[16];
+ char lbuf[16];
+ int blen;
+
+ ls=&wanted_locales[i];
+
+ extract_token(&buf[0],search, i,',',16);
+ /** we are searching, if this list item has something like ;q=n*/
+ if (num_tokens(&buf[0],'=')>1) {
+ int sbuflen, k;
+ extract_token(&sbuf[0],&buf[0], 1,'=',16);
+ sbuflen=strlen(&sbuf[0]);
+ for (k=0; k<sbuflen; k++) if (sbuf[k]=='.') sbuf[k]='0';
+ ls->priority=atol(&sbuf[0]);
}
- }
-
- /* 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;
+ else {
+ 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(&ls->lang[0],&sbuf[0],0,'-',16);
+ /** get the area code if any. */
+ if (num_tokens(&sbuf[0],'-')>1) {
+ extract_token(&ls->region[0],&sbuf[0],1,'-',16);
+ }
+ 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(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<NUM_LANGS; j++) {
+ int result;
+ /** match against the LANG part */
+ result=strcasecmp(&ls->lang[0], AvailLang[j]);
+ if ((result<0)&&(result<ls->availability)){
+ ls->availability=result;
+ ls->selectedlang=j;
+ }
+ /** match against lang and locale */
+ if (0==strcasecmp(&lbuf[0], AvailLang[j])){
+ ls->availability=0;
+ ls->selectedlang=j;
+ j=NUM_LANGS;
}
-
}
- }
- }
-
- 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);
-
- uselocale(my_Locale);
- // freelocale(my_Locale);
- // freelocale(my_Empty_Locale);
- free(search);
-}
-
-
-
-/*
- // the web browser sends '-', we need '_'
-
- for (i = 0; i < len; i++)
- if (search[i] == '-')
- search[i] = '_';
-
- nFound=i;
- nParts=num_tokens(search,',');
- if (nParts>0)
- {
- extract_token(prefers,search, 1,';',len);
- extract_token(langs,search, 0,';',len);
- }
- else
+ }
+
+ prio=0;
+ av=-1000;
+ nBest=-1;
+ for (i=0; ((i<nParts)&&(i<SEARCH_LANG)); i++)
{
- free(prefers);
- prefers=NULL;
- memcpy(search, len);
- search[len] = '\0';
- }
- 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++;
+ 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", AvailLang[WC->selected_language]);
+ // set_selected_language(selected_locale);
+}
- i++;
- }
-*/
-
-
-
+/* 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(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 offer_languages(void) {
int i;
wprintf("<select name=\"language\" size=\"1\">\n");
for (i=0; i < NUM_LANGS; ++i) {
- wprintf("<option value=%s>%s</option>\n", AvailLang[i], AvailLang[i]);
+ wprintf("<option %s value=%s>%s</option>\n",
+ ((WC->selected_language == i) ? "selected" : ""),
+ AvailLang[i],
+ AvailLang[i]
+ );
}
wprintf("</select>\n");
}
-/*
- * Set the selected language for this session.
+/**
+ * \brief Set the selected language for this session.
+ * \param lang the locale to set.
*/
void set_selected_language(char *lang) {
int i;
}
}
-/*
- * Activate the selected language for this session.
+/**
+ * \brief Activate the selected language for this session.
*/
void go_selected_language(void) {
- lprintf(9, "uselocale(%d)\n", WC->selected_language);
- uselocale(wc_locales[WC->selected_language]);
+ if (WC->selected_language < 0) return;
+ uselocale(wc_locales[WC->selected_language]); /** switch locales */
+ textdomain(textdomain(NULL)); /** clear the cache */
+}
+
+/**
+ * \brief Deactivate the selected language for this session.
+ */
+void stop_selected_language(void) {
+ uselocale(LC_GLOBAL_LOCALE); /** switch locales */
+ textdomain(textdomain(NULL)); /** clear the cache */
}
-/*
- * Create a locale_t for each available language
+/**
+ * \brief Create a locale_t for each available language
*/
void initialize_locales(void) {
int i;
#else /* ENABLE_NLS */
-
+/** \brief dummy for non NLS enabled systems */
void offer_languages(void) {
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) {
+}
+
#endif /* ENABLE_NLS */
+
+
+/*@}*/
projects / citadel.git / blobdiff