1*635a8641SAndroid Build Coastguard Worker // Copyright 2013 The Chromium Authors. All rights reserved. 2*635a8641SAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be 3*635a8641SAndroid Build Coastguard Worker // found in the LICENSE file. 4*635a8641SAndroid Build Coastguard Worker 5*635a8641SAndroid Build Coastguard Worker #include "base/i18n/timezone.h" 6*635a8641SAndroid Build Coastguard Worker 7*635a8641SAndroid Build Coastguard Worker #include <memory> 8*635a8641SAndroid Build Coastguard Worker #include <string> 9*635a8641SAndroid Build Coastguard Worker 10*635a8641SAndroid Build Coastguard Worker #include "third_party/icu/source/common/unicode/unistr.h" 11*635a8641SAndroid Build Coastguard Worker #include "third_party/icu/source/i18n/unicode/timezone.h" 12*635a8641SAndroid Build Coastguard Worker 13*635a8641SAndroid Build Coastguard Worker namespace base { 14*635a8641SAndroid Build Coastguard Worker CountryCodeForCurrentTimezone()15*635a8641SAndroid Build Coastguard Workerstd::string CountryCodeForCurrentTimezone() { 16*635a8641SAndroid Build Coastguard Worker std::unique_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault()); 17*635a8641SAndroid Build Coastguard Worker icu::UnicodeString id; 18*635a8641SAndroid Build Coastguard Worker // ICU returns '001' (world) for Etc/GMT. Preserve the old behavior 19*635a8641SAndroid Build Coastguard Worker // only for Etc/GMT while returning an empty string for Etc/UTC and 20*635a8641SAndroid Build Coastguard Worker // Etc/UCT because they're less likely to be chosen by mistake in UK in 21*635a8641SAndroid Build Coastguard Worker // place of Europe/London (Briitish Time). 22*635a8641SAndroid Build Coastguard Worker if (zone->getID(id) == UNICODE_STRING_SIMPLE("Etc/GMT")) 23*635a8641SAndroid Build Coastguard Worker return "GB"; 24*635a8641SAndroid Build Coastguard Worker char region_code[4]; 25*635a8641SAndroid Build Coastguard Worker UErrorCode status = U_ZERO_ERROR; 26*635a8641SAndroid Build Coastguard Worker int length = zone->getRegion(id, region_code, 4, status); 27*635a8641SAndroid Build Coastguard Worker // Return an empty string if region_code is a 3-digit numeric code such 28*635a8641SAndroid Build Coastguard Worker // as 001 (World) for Etc/UTC, Etc/UCT. 29*635a8641SAndroid Build Coastguard Worker return (U_SUCCESS(status) && length == 2) 30*635a8641SAndroid Build Coastguard Worker ? std::string(region_code, static_cast<size_t>(length)) 31*635a8641SAndroid Build Coastguard Worker : std::string(); 32*635a8641SAndroid Build Coastguard Worker } 33*635a8641SAndroid Build Coastguard Worker 34*635a8641SAndroid Build Coastguard Worker } // namespace base 35