blob: 8624e07e7c753378a1b3012255d6db411ae949b0 [file] [log] [blame]
// 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