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ICU-13189 ucurr_forLocale() do not succeed without writing output; also make it more readable and fix other issues

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X-SVN-Rev: 40114
This commit is contained in:
Markus Scherer 2017-05-05 23:48:40 +00:00
parent 89c546d69f
commit 85af08c09d
3 changed files with 103 additions and 84 deletions
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161
icu4c/source/common/ucurr.cpp
View File

@ -25,6 +25,7 @@
#include "uenumimp.h"
#include "uhash.h"
#include "hash.h"
#include "uinvchar.h"
#include "uresimp.h"
#include "ulist.h"
#include "ureslocs.h"
@ -545,93 +546,97 @@ U_CAPI int32_t U_EXPORT2
ucurr_forLocale(const char* locale,
UChar* buff,
int32_t buffCapacity,
UErrorCode* ec)
{
int32_t resLen = 0;
const UChar* s = NULL;
if (ec != NULL && U_SUCCESS(*ec)) {
if ((buff && buffCapacity) || !buffCapacity) {
UErrorCode localStatus = U_ZERO_ERROR;
char id[ULOC_FULLNAME_CAPACITY];
if ((resLen = uloc_getKeywordValue(locale, "currency", id, ULOC_FULLNAME_CAPACITY, &localStatus))) {
// there is a currency keyword. Try to see if it's valid
if(buffCapacity > resLen) {
/* Normalize the currency keyword value to upper case. */
T_CString_toUpperCase(id);
u_charsToUChars(id, buff, resLen);
}
} else {
// get country or country_variant in `id'
uint32_t variantType = idForLocale(locale, id, sizeof(id), ec);
UErrorCode* ec) {
if (U_FAILURE(*ec)) { return 0; }
if (buffCapacity < 0 || (buff == nullptr && buffCapacity > 0)) {
*ec = U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
if (U_FAILURE(*ec)) {
return 0;
}
char currency[4]; // ISO currency codes are alpha3 codes.
UErrorCode localStatus = U_ZERO_ERROR;
int32_t resLen = uloc_getKeywordValue(locale, "currency",
currency, UPRV_LENGTHOF(currency), &localStatus);
if (U_SUCCESS(localStatus) && resLen == 3 && uprv_isInvariantString(currency, resLen)) {
if (resLen < buffCapacity) {
T_CString_toUpperCase(currency);
u_charsToUChars(currency, buff, resLen);
}
return u_terminateUChars(buff, buffCapacity, resLen, ec);
}
// get country or country_variant in `id'
char id[ULOC_FULLNAME_CAPACITY];
uint32_t variantType = idForLocale(locale, id, UPRV_LENGTHOF(id), ec);
if (U_FAILURE(*ec)) {
return 0;
}
#if !UCONFIG_NO_SERVICE
const UChar* result = CReg::get(id);
if (result) {
if(buffCapacity > u_strlen(result)) {
u_strcpy(buff, result);
}
return u_strlen(result);
}
const UChar* result = CReg::get(id);
if (result) {
if(buffCapacity > u_strlen(result)) {
u_strcpy(buff, result);
}
resLen = u_strlen(result);
return u_terminateUChars(buff, buffCapacity, resLen, ec);
}
#endif
// Remove variants, which is only needed for registration.
char *idDelim = strchr(id, VAR_DELIM);
if (idDelim) {
idDelim[0] = 0;
}
// Remove variants, which is only needed for registration.
char *idDelim = uprv_strchr(id, VAR_DELIM);
if (idDelim) {
idDelim[0] = 0;
}
// Look up the CurrencyMap element in the root bundle.
UResourceBundle *rb = ures_openDirect(U_ICUDATA_CURR, CURRENCY_DATA, &localStatus);
UResourceBundle *cm = ures_getByKey(rb, CURRENCY_MAP, rb, &localStatus);
UResourceBundle *countryArray = ures_getByKey(rb, id, cm, &localStatus);
UResourceBundle *currencyReq = ures_getByIndex(countryArray, 0, NULL, &localStatus);
const UChar* s; // Currency code from data file.
if (id[0] == 0) {
// No point looking in the data for an empty string.
// This is what we would get.
localStatus = U_MISSING_RESOURCE_ERROR;
} else {
// Look up the CurrencyMap element in the root bundle.
localStatus = U_ZERO_ERROR;
UResourceBundle *rb = ures_openDirect(U_ICUDATA_CURR, CURRENCY_DATA, &localStatus);
UResourceBundle *cm = ures_getByKey(rb, CURRENCY_MAP, rb, &localStatus);
UResourceBundle *countryArray = ures_getByKey(rb, id, cm, &localStatus);
UResourceBundle *currencyReq = ures_getByIndex(countryArray, 0, NULL, &localStatus);
s = ures_getStringByKey(currencyReq, "id", &resLen, &localStatus);
// Get the second item when PREEURO is requested, and this is a known Euro country.
// If the requested variant is PREEURO, and this isn't a Euro country,
// assume that the country changed over to the Euro in the future.
// This is probably an old version of ICU that hasn't been updated yet.
// The latest currency is probably correct.
if (U_SUCCESS(localStatus)) {
if ((variantType & VARIANT_IS_PREEURO) && u_strcmp(s, EUR_STR) == 0) {
currencyReq = ures_getByIndex(countryArray, 1, currencyReq, &localStatus);
s = ures_getStringByKey(currencyReq, "id", &resLen, &localStatus);
/*
Get the second item when PREEURO is requested, and this is a known Euro country.
If the requested variant is PREEURO, and this isn't a Euro country, assume
that the country changed over to the Euro in the future. This is probably
an old version of ICU that hasn't been updated yet. The latest currency is
probably correct.
*/
if (U_SUCCESS(localStatus)) {
if ((variantType & VARIANT_IS_PREEURO) && u_strcmp(s, EUR_STR) == 0) {
currencyReq = ures_getByIndex(countryArray, 1, currencyReq, &localStatus);
s = ures_getStringByKey(currencyReq, "id", &resLen, &localStatus);
}
else if ((variantType & VARIANT_IS_EURO)) {
s = EUR_STR;
}
}
ures_close(countryArray);
ures_close(currencyReq);
if ((U_FAILURE(localStatus)) && strchr(id, '_') != 0)
{
// We don't know about it. Check to see if we support the variant.
uloc_getParent(locale, id, sizeof(id), ec);
*ec = U_USING_FALLBACK_WARNING;
return ucurr_forLocale(id, buff, buffCapacity, ec);
}
else if (*ec == U_ZERO_ERROR || localStatus != U_ZERO_ERROR) {
// There is nothing to fallback to. Report the failure/warning if possible.
*ec = localStatus;
}
if (U_SUCCESS(*ec)) {
if(buffCapacity > resLen) {
u_strcpy(buff, s);
}
}
} else if ((variantType & VARIANT_IS_EURO)) {
s = EUR_STR;
}
return u_terminateUChars(buff, buffCapacity, resLen, ec);
} else {
*ec = U_ILLEGAL_ARGUMENT_ERROR;
}
ures_close(currencyReq);
ures_close(countryArray);
}
if ((U_FAILURE(localStatus)) && strchr(id, '_') != 0) {
// We don't know about it. Check to see if we support the variant.
uloc_getParent(locale, id, UPRV_LENGTHOF(id), ec);
*ec = U_USING_FALLBACK_WARNING;
// TODO: Loop over the shortened id rather than recursing and
// looking again for a currency keyword.
return ucurr_forLocale(id, buff, buffCapacity, ec);
}
if (*ec == U_ZERO_ERROR || localStatus != U_ZERO_ERROR) {
// There is nothing to fallback to. Report the failure/warning if possible.
*ec = localStatus;
}
if (U_SUCCESS(*ec)) {
if(buffCapacity > resLen) {
u_strcpy(buff, s);
}
}
return resLen;
return u_terminateUChars(buff, buffCapacity, resLen, ec);
}
// end registration

13
icu4c/source/i18n/dcfmtsym.cpp
View File

@ -433,12 +433,13 @@ DecimalFormatSymbols::initialize(const Locale& loc, UErrorCode& status, UBool us
UErrorCode internalStatus = U_ZERO_ERROR; // don't propagate failures out
UChar curriso[4];
UnicodeString tempStr;
ucurr_forLocale(locStr, curriso, 4, &internalStatus);
uprv_getStaticCurrencyName(curriso, locStr, tempStr, internalStatus);
if (U_SUCCESS(internalStatus)) {
fSymbols[kIntlCurrencySymbol].setTo(curriso, -1);
fSymbols[kCurrencySymbol] = tempStr;
int32_t currisoLength = ucurr_forLocale(locStr, curriso, UPRV_LENGTHOF(curriso), &internalStatus);
if (U_SUCCESS(internalStatus) && currisoLength == 3) {
uprv_getStaticCurrencyName(curriso, locStr, tempStr, internalStatus);
if (U_SUCCESS(internalStatus)) {
fSymbols[kIntlCurrencySymbol].setTo(curriso, currisoLength);
fSymbols[kCurrencySymbol] = tempStr;
}
}
/* else use the default values. */

13
icu4c/source/test/intltest/loctest.cpp
View File

@ -1257,6 +1257,19 @@ LocaleTest::TestEuroSupport()
if (invalidLen || U_SUCCESS(status)) {
errln("Fail: en_QQ didn't return NULL");
}
// The currency keyword value is as long as the destination buffer.
// It should detect the overflow internally, and default to the locale's currency.
tmp[0] = u'¤';
status = U_ZERO_ERROR;
int32_t length = ucurr_forLocale("en_US@currency=euro", tmp, 4, &status);
if (U_FAILURE(status) || dollarStr != UnicodeString(tmp, length)) {
if (U_SUCCESS(status) && tmp[0] == u'¤') {
errln("Fail: ucurr_forLocale(en_US@currency=euro) succeeded without writing output");
} else {
errln("Fail: ucurr_forLocale(en_US@currency=euro) != USD - %s", u_errorName(status));
}
}
}
#endif