U_CAPI int32_t U_EXPORT2
ucal_getDSTSavings(const UChar* zoneID, UErrorCode* ec) {
int32_t result = 0;
TimeZone* zone = _createTimeZone(zoneID, -1, ec);
if (U_SUCCESS(*ec)) {
SimpleTimeZone* stz = dynamic_cast<SimpleTimeZone*>(zone);
if (stz != NULL) {
result = stz->getDSTSavings();
} else {
// Since there is no getDSTSavings on TimeZone, we use a
// heuristic: Starting with the current time, march
// forwards for one year, looking for DST savings.
// Stepping by weeks is sufficient.
UDate d = Calendar::getNow();
for (int32_t i=0; i<53; ++i, d+=U_MILLIS_PER_DAY*7.0) {
int32_t raw, dst;
zone->getOffset(d, FALSE, raw, dst, *ec);
if (U_FAILURE(*ec)) {
break;
} else if (dst != 0) {
result = dst;
break;
}
}
}
}
delete zone;
return result;
}
U_CAPI void U_EXPORT2
ucal_setDefaultTimeZone(const UChar* zoneID, UErrorCode* ec) {
TimeZone* zone = _createTimeZone(zoneID, -1, ec);
if (zone != NULL) {
TimeZone::adoptDefault(zone);
}
}
U_CAPI UCalendar* U_EXPORT2
ucal_open( const UChar* zoneID,
int32_t len,
const char* locale,
UCalendarType caltype,
UErrorCode* status)
{
if(U_FAILURE(*status)) return 0;
TimeZone* zone = (zoneID==NULL) ? TimeZone::createDefault()
: _createTimeZone(zoneID, len, status);
if (U_FAILURE(*status)) {
return NULL;
}
if ( caltype == UCAL_GREGORIAN ) {
char localeBuf[ULOC_LOCALE_IDENTIFIER_CAPACITY];
if ( locale == NULL ) {
locale = uloc_getDefault();
}
uprv_strncpy(localeBuf, locale, ULOC_LOCALE_IDENTIFIER_CAPACITY);
uloc_setKeywordValue("calendar", "gregorian", localeBuf, ULOC_LOCALE_IDENTIFIER_CAPACITY, status);
if (U_FAILURE(*status)) {
return NULL;
}
return (UCalendar*)Calendar::createInstance(zone, Locale(localeBuf), *status);
}
return (UCalendar*)Calendar::createInstance(zone, Locale(locale), *status);
}
U_CAPI void U_EXPORT2
ucal_setTimeZone( UCalendar* cal,
const UChar* zoneID,
int32_t len,
UErrorCode *status)
{
if(U_FAILURE(*status))
return;
TimeZone* zone = (zoneID==NULL) ? TimeZone::createDefault()
: _createTimeZone(zoneID, len, status);
if (zone != NULL) {
((Calendar*)cal)->adoptTimeZone(zone);
}
}
// ignore type until we add more subclasses
U_CAPI UCalendar* U_EXPORT2
ucal_open( const UChar* zoneID,
int32_t len,
const char* locale,
UCalendarType /*type*/,
UErrorCode* status)
{
if(U_FAILURE(*status)) return 0;
TimeZone* zone = (zoneID==NULL) ? TimeZone::createDefault()
: _createTimeZone(zoneID, len, status);
if (U_FAILURE(*status)) {
return NULL;
}
return (UCalendar*)Calendar::createInstance(zone, Locale(locale), *status);
}