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