// 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. #ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_ #define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_ #include <string> #include "absl/base/config.h" #include "absl/time/internal/cctz/include/cctz/time_zone.h" namespace absl { ABSL_NAMESPACE_BEGIN namespace time_internal { namespace cctz { // Helper functions for dealing with the names and abbreviations // of time zones that are a fixed offset (seconds east) from UTC. // FixedOffsetFromName() extracts the offset from a valid fixed-offset // name, while FixedOffsetToName() and FixedOffsetToAbbr() generate // the canonical zone name and abbreviation respectively for the given // offset. // // A fixed-offset name looks like "Fixed/UTC<+-><hours>:<mins>:<secs>". // Its abbreviation is of the form "UTC(<+->H?H(MM(SS)?)?)?" where the // optional pieces are omitted when their values are zero. (Note that // the sign is the opposite of that used in a POSIX TZ specification.) // // Note: FixedOffsetFromName() fails on syntax errors or when the parsed // offset exceeds 24 hours. FixedOffsetToName() and FixedOffsetToAbbr() // both produce "UTC" when the argument offset exceeds 24 hours. bool FixedOffsetFromName(const std::string& name, seconds* offset); std::string FixedOffsetToName(const seconds& offset); std::string FixedOffsetToAbbr(const seconds& offset); } // namespace cctz } // namespace time_internal ABSL_NAMESPACE_END } // namespace absl #endif // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_FIXED_H_