// Copyright 2016 Google Inc. All Rights Reserved.

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//   https://www.apache.org/licenses/LICENSE-2.0

//

//   Unless required by applicable law or agreed to in writing, software

//   distributed under the License is distributed on an "AS IS" BASIS,

//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

//   See the License for the specific language governing permissions and

//   limitations under the License.

#include "time_zone_if.h"

#include "time_zone_info.h"

#include "time_zone_libc.h"

namespace cctz {

std::unique_ptr<TimeZoneIf> TimeZoneIf::UTC() {

  return TimeZoneInfo::UTC();

}

std::unique_ptr<TimeZoneIf> TimeZoneIf::Make(const std::string& name) {

  // Support "libc:localtime" and "libc:*" to access the legacy

  // localtime and UTC support respectively from the C library.

  // NOTE: The "libc:*" zones are internal, test-only interfaces, and

  // are subject to change/removal without notice. Do not use them.

  if (name.compare(0, 5, "libc:") == 0) {

    return TimeZoneLibC::Make(name.substr(5));

  }

  // Otherwise use the "zoneinfo" implementation.

  return TimeZoneInfo::Make(name);

}

// Defined out-of-line to avoid emitting a weak vtable in all TUs.

TimeZoneIf::~TimeZoneIf() {}

}  // namespace cctz