Variant HHVM_STATIC_METHOD(DateTimeZone, listIdentifiers,
int64_t what,
const String& country) {
// This is the same check that PHP5 performs, no validation needed.
// See ext/date/php_date.c lines 4496-4499
if (what == DateTimeZoneData::PER_COUNTRY && country.length() != 2) {
raise_notice("A two-letter ISO 3166-1 compatible country code is expected");
return false;
}
const timelib_tzdb *tzdb = timezone_get_builtin_tzdb();
int item_count = tzdb->index_size;
const timelib_tzdb_index_entry *table = tzdb->index;
Array ret = Array::Create();
for (int i = 0; i < item_count; ++i) {
// This string is what PHP considers as "data" or "info" which is basically
// the string of "PHP1xx" where xx is country code that uses this timezone.
// When country code is unknown or not in use anymore, ?? is used instead.
// There is no known better way to extract this information out.
const char* infoString = (const char*)&tzdb->data[table[i].pos];
String countryCode = String(&infoString[5], 2, CopyString);
if ((what == DateTimeZoneData::PER_COUNTRY && equal(country, countryCode))
|| what == DateTimeZoneData::ALL_WITH_BC
|| (check_id_allowed(table[i].id, what)
&& tzdb->data[table[i].pos + 4] == '\1')) {
ret.append(String(table[i].id, CopyString));
}
}
return ret;
}
const timelib_tzdb *TimeZone::GetDatabase() {
const timelib_tzdb *&Database = s_timezone_data->Database;
if (Database == nullptr) {
Database = timezone_get_builtin_tzdb();
}
return Database;
}