U_CDECL_END
U_NAMESPACE_BEGIN
Locale *locale_set_default_internal(const char *id, UErrorCode& status) {
// Synchronize this entire function.
Mutex lock(&gDefaultLocaleMutex);
UBool canonicalize = FALSE;
// If given a NULL string for the locale id, grab the default
// name from the system.
// (Different from most other locale APIs, where a null name means use
// the current ICU default locale.)
if (id == NULL) {
id = uprv_getDefaultLocaleID(); // This function not thread safe? TODO: verify.
canonicalize = TRUE; // always canonicalize host ID
}
char localeNameBuf[512];
if (canonicalize) {
uloc_canonicalize(id, localeNameBuf, sizeof(localeNameBuf)-1, &status);
} else {
uloc_getName(id, localeNameBuf, sizeof(localeNameBuf)-1, &status);
}
localeNameBuf[sizeof(localeNameBuf)-1] = 0; // Force null termination in event of
// a long name filling the buffer.
// (long names are truncated.)
//
if (U_FAILURE(status)) {
return gDefaultLocale;
}
if (gDefaultLocalesHashT == NULL) {
gDefaultLocalesHashT = uhash_open(uhash_hashChars, uhash_compareChars, NULL, &status);
if (U_FAILURE(status)) {
return gDefaultLocale;
}
uhash_setValueDeleter(gDefaultLocalesHashT, deleteLocale);
ucln_common_registerCleanup(UCLN_COMMON_LOCALE, locale_cleanup);
}
Locale *newDefault = (Locale *)uhash_get(gDefaultLocalesHashT, localeNameBuf);
if (newDefault == NULL) {
newDefault = new Locale(Locale::eBOGUS);
if (newDefault == NULL) {
status = U_MEMORY_ALLOCATION_ERROR;
return gDefaultLocale;
}
newDefault->init(localeNameBuf, FALSE);
uhash_put(gDefaultLocalesHashT, (char*) newDefault->getName(), newDefault, &status);
if (U_FAILURE(status)) {
return gDefaultLocale;
}
}
gDefaultLocale = newDefault;
return gDefaultLocale;
}
