Scott E. Graves
a7239558bd
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Reviewed-on: #18
89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
/*
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Copyright <2018-2024> <scott.e.graves@protonmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include "utils/time.hpp"
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namespace repertory::utils::time {
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void get_local_time_now(struct tm &local_time) {
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std::memset(&local_time, 0, sizeof(local_time));
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const auto now =
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std::chrono::system_clock::to_time_t(std::chrono::system_clock::now());
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#if defined(_WIN32)
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localtime_s(&local_time, &now);
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#else // !defined(_WIN32)
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localtime_r(&now, &local_time);
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#endif // defined(_WIN32)
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}
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auto get_time_now() -> std::uint64_t {
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return static_cast<std::uint64_t>(
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std::chrono::duration_cast<std::chrono::nanoseconds>(
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std::chrono::system_clock::now().time_since_epoch())
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.count());
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}
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#if defined(_WIN32)
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// https://stackoverflow.com/questions/321849/strptime-equivalent-on-windows
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auto strptime(const char *s, const char *f, struct tm *tm) -> const char * {
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std::istringstream input{s};
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input.imbue(std::locale(setlocale(LC_ALL, nullptr)));
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input >> std::get_time(tm, f);
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if (input.fail()) {
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return nullptr;
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}
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return reinterpret_cast<const char *>(s + input.tellg());
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}
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// https://www.frenk.com/2009/12/convert-filetime-to-unix-timestamp/
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auto unix_time_to_filetime(std::uint64_t unix_time) -> FILETIME {
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auto win_time = unix_time_to_windows_time(unix_time);
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FILETIME file_time{};
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file_time.dwHighDateTime = static_cast<DWORD>(win_time >> 32U);
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file_time.dwLowDateTime = win_time & 0xFFFFFFFF;
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return file_time;
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}
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auto windows_file_time_to_unix_time(FILETIME win_time) -> std::uint64_t {
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return windows_time_to_unix_time(
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(static_cast<std::uint64_t>(win_time.dwHighDateTime) << 32ULL) |
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static_cast<std::uint64_t>(win_time.dwLowDateTime));
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}
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auto windows_time_t_to_unix_time(__time64_t win_time) -> std::uint64_t {
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return static_cast<std::uint64_t>(
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std::chrono::duration_cast<std::chrono::nanoseconds>(
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std::chrono::system_clock::from_time_t(win_time).time_since_epoch())
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.count());
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}
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#endif // defined(_WIN32)
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auto unix_time_to_windows_time(std::uint64_t unix_time) -> std::uint64_t {
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return (unix_time / WIN32_TIME_NANOS_PER_TICK) + WIN32_TIME_CONVERSION;
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}
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auto windows_time_to_unix_time(std::uint64_t win_time) -> std::uint64_t {
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return (win_time * WIN32_TIME_NANOS_PER_TICK) - WIN32_TIME_CONVERSION;
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}
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} // namespace repertory::utils::time
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