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Diffstat (limited to 'third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h')
| -rw-r--r-- | third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h b/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h deleted file mode 100644 index 012eb4ec30..0000000000 --- a/third_party/abseil_cpp/absl/time/internal/cctz/include/cctz/zone_info_source.h +++ /dev/null @@ -1,102 +0,0 @@ -// 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_ZONE_INFO_SOURCE_H_ -#define ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_ - -#include <cstddef> -#include <functional> -#include <memory> -#include <string> - -#include "absl/base/config.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace time_internal { -namespace cctz { - -// A stdio-like interface for providing zoneinfo data for a particular zone. -class ZoneInfoSource { - public: - virtual ~ZoneInfoSource(); - - virtual std::size_t Read(void* ptr, std::size_t size) = 0; // like fread() - virtual int Skip(std::size_t offset) = 0; // like fseek() - - // Until the zoneinfo data supports versioning information, we provide - // a way for a ZoneInfoSource to indicate it out-of-band. The default - // implementation returns an empty string. - virtual std::string Version() const; -}; - -} // namespace cctz -} // namespace time_internal -ABSL_NAMESPACE_END -} // namespace absl - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace time_internal { -namespace cctz_extension { - -// A function-pointer type for a factory that returns a ZoneInfoSource -// given the name of a time zone and a fallback factory. Returns null -// when the data for the named zone cannot be found. -using ZoneInfoSourceFactory = - std::unique_ptr<absl::time_internal::cctz::ZoneInfoSource> (*)( - const std::string&, - const std::function<std::unique_ptr< - absl::time_internal::cctz::ZoneInfoSource>(const std::string&)>&); - -// The user can control the mapping of zone names to zoneinfo data by -// providing a definition for cctz_extension::zone_info_source_factory. -// For example, given functions my_factory() and my_other_factory() that -// can return a ZoneInfoSource for a named zone, we could inject them into -// cctz::load_time_zone() with: -// -// namespace cctz_extension { -// namespace { -// std::unique_ptr<cctz::ZoneInfoSource> CustomFactory( -// const std::string& name, -// const std::function<std::unique_ptr<cctz::ZoneInfoSource>( -// const std::string& name)>& fallback_factory) { -// if (auto zip = my_factory(name)) return zip; -// if (auto zip = fallback_factory(name)) return zip; -// if (auto zip = my_other_factory(name)) return zip; -// return nullptr; -// } -// } // namespace -// ZoneInfoSourceFactory zone_info_source_factory = CustomFactory; -// } // namespace cctz_extension -// -// This might be used, say, to use zoneinfo data embedded in the program, -// or read from a (possibly compressed) file archive, or both. -// -// cctz_extension::zone_info_source_factory() will be called: -// (1) from the same thread as the cctz::load_time_zone() call, -// (2) only once for any zone name, and -// (3) serially (i.e., no concurrent execution). -// -// The fallback factory obtains zoneinfo data by reading files in ${TZDIR}, -// and it is used automatically when no zone_info_source_factory definition -// is linked into the program. -extern ZoneInfoSourceFactory zone_info_source_factory; - -} // namespace cctz_extension -} // namespace time_internal -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_TIME_INTERNAL_CCTZ_ZONE_INFO_SOURCE_H_ |