1 | // Copyright 2016 Google Inc. All Rights Reserved. |
2 | // |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
4 | // you may not use this file except in compliance with the License. |
5 | // You may obtain a copy of the License at |
6 | // |
7 | // https://www.apache.org/licenses/LICENSE-2.0 |
8 | // |
9 | // Unless required by applicable law or agreed to in writing, software |
10 | // distributed under the License is distributed on an "AS IS" BASIS, |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | // See the License for the specific language governing permissions and |
13 | // limitations under the License. |
14 | |
15 | #ifndef ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_ |
16 | #define ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_ |
17 | |
18 | #include <string> |
19 | |
20 | #include "time_zone_if.h" |
21 | |
22 | namespace absl { |
23 | namespace time_internal { |
24 | namespace cctz { |
25 | |
26 | // A time zone backed by gmtime_r(3), localtime_r(3), and mktime(3), |
27 | // and which therefore only supports UTC and the local time zone. |
28 | // TODO: Add support for fixed offsets from UTC. |
29 | class TimeZoneLibC : public TimeZoneIf { |
30 | public: |
31 | explicit TimeZoneLibC(const std::string& name); |
32 | |
33 | // TimeZoneIf implementations. |
34 | time_zone::absolute_lookup BreakTime( |
35 | const time_point<seconds>& tp) const override; |
36 | time_zone::civil_lookup MakeTime( |
37 | const civil_second& cs) const override; |
38 | bool NextTransition(const time_point<seconds>& tp, |
39 | time_zone::civil_transition* trans) const override; |
40 | bool PrevTransition(const time_point<seconds>& tp, |
41 | time_zone::civil_transition* trans) const override; |
42 | std::string Version() const override; |
43 | std::string Description() const override; |
44 | |
45 | private: |
46 | const bool local_; // localtime or UTC |
47 | }; |
48 | |
49 | } // namespace cctz |
50 | } // namespace time_internal |
51 | } // namespace absl |
52 | |
53 | #endif // ABSL_TIME_INTERNAL_CCTZ_TIME_ZONE_LIBC_H_ |
54 | |