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