U_CAPI double U_EXPORT2
unum_parseDoubleCurrency(const UNumberFormat* fmt,
const UChar* text,
int32_t textLength,
int32_t* parsePos, /* 0 = start */
UChar* currency,
UErrorCode* status) {
double doubleVal = 0.0;
currency[0] = 0;
if (U_FAILURE(*status)) {
return doubleVal;
}
const UnicodeString src((UBool)(textLength == -1), text, textLength);
ParsePosition pp;
if (parsePos != NULL) {
pp.setIndex(*parsePos);
}
*status = U_PARSE_ERROR; // assume failure, reset if succeed
LocalPointer<CurrencyAmount> currAmt(((const NumberFormat*)fmt)->parseCurrency(src, pp));
if (pp.getErrorIndex() != -1) {
if (parsePos != NULL) {
*parsePos = pp.getErrorIndex();
}
} else {
if (parsePos != NULL) {
*parsePos = pp.getIndex();
}
if (pp.getIndex() > 0) {
*status = U_ZERO_ERROR;
u_strcpy(currency, currAmt->getISOCurrency());
doubleVal = currAmt->getNumber().getDouble(*status);
}
}
return doubleVal;
}
CurrencyAmount* NumberFormat::parseCurrency(const UnicodeString& text,
ParsePosition& pos) const {
// Default implementation only -- subclasses should override
Formattable parseResult;
int32_t start = pos.getIndex();
parse(text, parseResult, pos);
if (pos.getIndex() != start) {
UChar curr[4];
UErrorCode ec = U_ZERO_ERROR;
getEffectiveCurrency(curr, ec);
if (U_SUCCESS(ec)) {
LocalPointer<CurrencyAmount> currAmt(new CurrencyAmount(parseResult, curr, ec));
if (U_FAILURE(ec)) {
pos.setIndex(start); // indicate failure
} else {
return currAmt.orphan();
}
}
}
return NULL;
}
