/**
* Internal function to look up currency data. Result is an array of
* two integers. The first is the fraction digits. The second is the
* rounding increment, or 0 if none. The rounding increment is in
* units of 10^(-fraction_digits).
*/
static const int32_t*
_findMetaData(const UChar* currency) {
// Get CurrencyMeta resource out of root locale file. [This may
// move out of the root locale file later; if it does, update this
// code.]
UErrorCode ec = U_ZERO_ERROR;
ResourceBundle currencyMeta =
ResourceBundle((char*)0, Locale(""), ec).get(CURRENCY_META, ec);
if (U_FAILURE(ec)) {
// Config/build error; return hard-coded defaults
return LAST_RESORT_DATA;
}
// Look up our currency, or if that's not available, then DEFAULT
char buf[ISO_COUNTRY_CODE_LENGTH+1];
ResourceBundle rb = currencyMeta.get(myUCharsToChars(buf, currency), ec);
if (U_FAILURE(ec)) {
rb = currencyMeta.get(DEFAULT_META, ec);
if (U_FAILURE(ec)) {
// Config/build error; return hard-coded defaults
return LAST_RESORT_DATA;
}
}
int32_t len;
const int32_t *data = rb.getIntVector(len, ec);
if (U_FAILURE(ec) || len < 2) {
// Config/build error; return hard-coded defaults
return LAST_RESORT_DATA;
}
return data;
}
/**
* Internal function to look up currency data. Result is an array of
* two integers. The first is the fraction digits. The second is the
* rounding increment, or 0 if none. The rounding increment is in
* units of 10^(-fraction_digits).
*/
static const int32_t*
_findMetaData(const UChar* currency, UErrorCode& ec) {
if (currency == 0 || *currency == 0) {
if (U_SUCCESS(ec)) {
ec = U_ILLEGAL_ARGUMENT_ERROR;
}
return LAST_RESORT_DATA;
}
// Get CurrencyMeta resource out of root locale file. [This may
// move out of the root locale file later; if it does, update this
// code.]
UResourceBundle* currencyData = ures_openDirect(NULL, CURRENCY_DATA, &ec);
UResourceBundle* currencyMeta = ures_getByKey(currencyData, CURRENCY_META, currencyData, &ec);
if (U_FAILURE(ec)) {
ures_close(currencyMeta);
// Config/build error; return hard-coded defaults
return LAST_RESORT_DATA;
}
// Look up our currency, or if that's not available, then DEFAULT
char buf[ISO_COUNTRY_CODE_LENGTH+1];
UErrorCode ec2 = U_ZERO_ERROR; // local error code: soft failure
UResourceBundle* rb = ures_getByKey(currencyMeta, myUCharsToChars(buf, currency), NULL, &ec2);
if (U_FAILURE(ec2)) {
ures_close(rb);
rb = ures_getByKey(currencyMeta,DEFAULT_META, NULL, &ec);
if (U_FAILURE(ec)) {
ures_close(currencyMeta);
ures_close(rb);
// Config/build error; return hard-coded defaults
return LAST_RESORT_DATA;
}
}
int32_t len;
const int32_t *data = ures_getIntVector(rb, &len, &ec);
if (U_FAILURE(ec) || len != 2) {
// Config/build error; return hard-coded defaults
if (U_SUCCESS(ec)) {
ec = U_INVALID_FORMAT_ERROR;
}
ures_close(currencyMeta);
ures_close(rb);
return LAST_RESORT_DATA;
}
ures_close(currencyMeta);
ures_close(rb);
return data;
}
U_CAPI const UChar* U_EXPORT2
ucurr_getName(const UChar* currency,
const char* locale,
UCurrNameStyle nameStyle,
UBool* isChoiceFormat, // fillin
int32_t* len, // fillin
UErrorCode* ec) {
// Look up the Currencies resource for the given locale. The
// Currencies locale data looks like this:
//|en {
//| Currencies {
//| USD { "US$", "US Dollar" }
//| CHF { "Sw F", "Swiss Franc" }
//| INR { "=0#Rs|1#Re|1<Rs", "=0#Rupees|1#Rupee|1<Rupees" }
//| //...
//| }
//|}
if (U_FAILURE(*ec)) {
return 0;
}
int32_t choice = (int32_t) nameStyle;
if (choice < 0 || choice > 1) {
*ec = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
// In the future, resource bundles may implement multi-level
// fallback. That is, if a currency is not found in the en_US
// Currencies data, then the en Currencies data will be searched.
// Currently, if a Currencies datum exists in en_US and en, the
// en_US entry hides that in en.
// We want multi-level fallback for this resource, so we implement
// it manually.
// Use a separate UErrorCode here that does not propagate out of
// this function.
UErrorCode ec2 = U_ZERO_ERROR;
char loc[ULOC_FULLNAME_CAPACITY];
uloc_getName(locale, loc, sizeof(loc), &ec2);
if (U_FAILURE(ec2) || ec2 == U_STRING_NOT_TERMINATED_WARNING) {
*ec = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
char buf[ISO_COUNTRY_CODE_LENGTH+1];
myUCharsToChars(buf, currency);
const UChar* s = NULL;
ec2 = U_ZERO_ERROR;
UResourceBundle* rb = ures_open(NULL, loc, &ec2);
rb = ures_getByKey(rb, CURRENCIES, rb, &ec2);
// Fetch resource with multi-level resource inheritance fallback
rb = ures_getByKeyWithFallback(rb, buf, rb, &ec2);
s = ures_getStringByIndex(rb, choice, len, &ec2);
ures_close(rb);
// If we've succeeded we're done. Otherwise, try to fallback.
// If that fails (because we are already at root) then exit.
if (U_SUCCESS(ec2)) {
if (ec2 == U_USING_DEFAULT_WARNING
|| (ec2 == U_USING_FALLBACK_WARNING && *ec != U_USING_DEFAULT_WARNING)) {
*ec = ec2;
}
}
// Determine if this is a ChoiceFormat pattern. One leading mark
// indicates a ChoiceFormat. Two indicates a static string that
// starts with a mark. In either case, the first mark is ignored,
// if present. Marks in the rest of the string have no special
// meaning.
*isChoiceFormat = FALSE;
if (U_SUCCESS(ec2)) {
U_ASSERT(s != NULL);
int32_t i=0;
while (i < *len && s[i] == CHOICE_FORMAT_MARK && i < 2) {
++i;
}
*isChoiceFormat = (i == 1);
if (i != 0) ++s; // Skip over first mark
return s;
}
// If we fail to find a match, use the ISO 4217 code
*len = u_strlen(currency); // Should == ISO_COUNTRY_CODE_LENGTH, but maybe not...?
*ec = U_USING_DEFAULT_WARNING;
return currency;
}