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