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// 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::Load(const std::string& name) { 
  // Support "libc:localtime" and "libc:*" to access the legacy 
  // localtime and UTC support respectively from the C library. 
  if (name.compare(0, 5, "libc:") == 0) { 
    return std::unique_ptr<TimeZoneIf>(new TimeZoneLibC(name.substr(5))); 
  } 
 
  // Otherwise use the "zoneinfo" implementation by default. 
  std::unique_ptr<TimeZoneInfo> tz(new TimeZoneInfo); 
  if (!tz->Load(name)) tz.reset(); 
  return std::unique_ptr<TimeZoneIf>(tz.release()); 
} 
 
// Defined out-of-line to avoid emitting a weak vtable in all TUs.
TimeZoneIf::~TimeZoneIf() {}

time_point<seconds> UnixSecondsToTimePoint(std::int_fast64_t seconds) {
  return FromUnixSeconds(seconds);
}

std::int_fast64_t TimePointToUnixSeconds(const time_point<seconds>& tp) {
  return ToUnixSeconds(tp);
}

}  // namespace cctz