/*
* This method updates the cache and must be called with a lock
*/
const UChar*
TZGNCore::getGenericLocationName(const UnicodeString& tzCanonicalID) {
U_ASSERT(!tzCanonicalID.isEmpty());
if (tzCanonicalID.length() > ZID_KEY_MAX) {
return NULL;
}
UErrorCode status = U_ZERO_ERROR;
UChar tzIDKey[ZID_KEY_MAX + 1];
int32_t tzIDKeyLen = tzCanonicalID.extract(tzIDKey, ZID_KEY_MAX + 1, status);
U_ASSERT(status == U_ZERO_ERROR); // already checked length above
tzIDKey[tzIDKeyLen] = 0;
const UChar *locname = (const UChar *)uhash_get(fLocationNamesMap, tzIDKey);
if (locname != NULL) {
// gEmpty indicate the name is not available
if (locname == gEmpty) {
return NULL;
}
return locname;
}
// Construct location name
UnicodeString name;
UnicodeString usCountryCode;
UBool isPrimary = FALSE;
ZoneMeta::getCanonicalCountry(tzCanonicalID, usCountryCode, &isPrimary);
if (!usCountryCode.isEmpty()) {
if (isPrimary) {
// If this is the primary zone in the country, use the country name.
char countryCode[ULOC_COUNTRY_CAPACITY];
U_ASSERT(usCountryCode.length() < ULOC_COUNTRY_CAPACITY);
int32_t ccLen = usCountryCode.extract(0, usCountryCode.length(), countryCode, sizeof(countryCode), US_INV);
countryCode[ccLen] = 0;
UnicodeString country;
fLocaleDisplayNames->regionDisplayName(countryCode, country);
fRegionFormat.format(country, name, status);
} else {
// If this is not the primary zone in the country,
// use the exemplar city name.
// getExemplarLocationName should retur non-empty string
// if the time zone is associated with a region
UnicodeString city;
fTimeZoneNames->getExemplarLocationName(tzCanonicalID, city);
fRegionFormat.format(city, name, status);
}
if (U_FAILURE(status)) {
return NULL;
}
}
locname = name.isEmpty() ? NULL : fStringPool.get(name, status);
if (U_SUCCESS(status)) {
// Cache the result
const UChar* cacheID = ZoneMeta::findTimeZoneID(tzCanonicalID);
U_ASSERT(cacheID != NULL);
if (locname == NULL) {
// gEmpty to indicate - no location name available
uhash_put(fLocationNamesMap, (void *)cacheID, (void *)gEmpty, &status);
} else {
uhash_put(fLocationNamesMap, (void *)cacheID, (void *)locname, &status);
if (U_FAILURE(status)) {
locname = NULL;
} else {
// put the name info into the trie
GNameInfo *nameinfo = (ZNameInfo *)uprv_malloc(sizeof(GNameInfo));
if (nameinfo != NULL) {
nameinfo->type = UTZGNM_LOCATION;
nameinfo->tzID = cacheID;
fGNamesTrie.put(locname, nameinfo, status);
}
}
}
}
return locname;
}
/*
* This method updates the cache and must be called with a lock
*/
const UChar*
TZGNCore::getPartialLocationName(const UnicodeString& tzCanonicalID,
const UnicodeString& mzID, UBool isLong, const UnicodeString& mzDisplayName) {
U_ASSERT(!tzCanonicalID.isEmpty());
U_ASSERT(!mzID.isEmpty());
U_ASSERT(!mzDisplayName.isEmpty());
PartialLocationKey key;
key.tzID = ZoneMeta::findTimeZoneID(tzCanonicalID);
key.mzID = ZoneMeta::findMetaZoneID(mzID);
key.isLong = isLong;
U_ASSERT(key.tzID != NULL && key.mzID != NULL);
const UChar* uplname = (const UChar*)uhash_get(fPartialLocationNamesMap, (void *)&key);
if (uplname != NULL) {
return uplname;
}
UnicodeString location;
UnicodeString usCountryCode;
ZoneMeta::getCanonicalCountry(tzCanonicalID, usCountryCode);
if (!usCountryCode.isEmpty()) {
char countryCode[ULOC_COUNTRY_CAPACITY];
U_ASSERT(usCountryCode.length() < ULOC_COUNTRY_CAPACITY);
int32_t ccLen = usCountryCode.extract(0, usCountryCode.length(), countryCode, sizeof(countryCode), US_INV);
countryCode[ccLen] = 0;
UnicodeString regionalGolden;
fTimeZoneNames->getReferenceZoneID(mzID, countryCode, regionalGolden);
if (tzCanonicalID == regionalGolden) {
// Use country name
fLocaleDisplayNames->regionDisplayName(countryCode, location);
} else {
// Otherwise, use exemplar city name
fTimeZoneNames->getExemplarLocationName(tzCanonicalID, location);
}
} else {
fTimeZoneNames->getExemplarLocationName(tzCanonicalID, location);
if (location.isEmpty()) {
// This could happen when the time zone is not associated with a country,
// and its ID is not hierarchical, for example, CST6CDT.
// We use the canonical ID itself as the location for this case.
location.setTo(tzCanonicalID);
}
}
UErrorCode status = U_ZERO_ERROR;
UnicodeString name;
fFallbackFormat.format(location, mzDisplayName, name, status);
if (U_FAILURE(status)) {
return NULL;
}
uplname = fStringPool.get(name, status);
if (U_SUCCESS(status)) {
// Add the name to cache
PartialLocationKey* cacheKey = (PartialLocationKey *)uprv_malloc(sizeof(PartialLocationKey));
if (cacheKey != NULL) {
cacheKey->tzID = key.tzID;
cacheKey->mzID = key.mzID;
cacheKey->isLong = key.isLong;
uhash_put(fPartialLocationNamesMap, (void *)cacheKey, (void *)uplname, &status);
if (U_FAILURE(status)) {
uprv_free(cacheKey);
} else {
// put the name to the local trie as well
GNameInfo *nameinfo = (ZNameInfo *)uprv_malloc(sizeof(GNameInfo));
if (nameinfo != NULL) {
nameinfo->type = isLong ? UTZGNM_LONG : UTZGNM_SHORT;
nameinfo->tzID = key.tzID;
fGNamesTrie.put(uplname, nameinfo, status);
}
}
}
}
return uplname;
}
// We defer actually building the TextTrieMap node structure until the first time a
// search is performed. put() simply saves the parameters in case we do
// eventually need to build it.
//
void
TextTrieMap::put(const UnicodeString &key, void *value, ZNStringPool &sp, UErrorCode &status) {
const UChar *s = sp.get(key, status);
put(s, value, status);
}
