v2.0.2-rc (#27)

## v2.0.2-rc

### BREAKING CHANGES

* Refactored `config.json` - will need to verify configuration settings prior to mounting

### Issues

* \#12 \[Unit Test\] Complete all providers unit tests
* \#14 \[Unit Test\] SQLite mini-ORM unit tests and cleanup
* \#16 Add support for bucket name in Sia provider
* \#17 Update to common c++ build system
  * A single 64-bit Linux Jenkins server is used to build all Linux and Windows versions
  * All dependency sources are now included
  * MSVC is no longer supported
  * MSYS2 is required for building Windows binaries on Windows
  * OS X support is temporarily disabled
* \#19 \[bug\] Rename file is broken for files that are existing
* \#23 \[bug\] Incorrect file size displayed while upload is pending
* \#24 RocksDB implementations should be transactional
* \#25 Writes should block when maximum cache size is reached
* \#26 Complete ring buffer and direct download support

### Changes from v2.0.1-rc

* Ability to choose between RocksDB and SQLite databases
* Added direct reads and implemented download fallback
* Corrected file times on S3 and Sia providers
* Corrected handling of `chown()` and `chmod()`
* Fixed erroneous download of chunks after resize

Reviewed-on: #27

support/src/utils/time.cpp

@@ -0,0 +1,88 @@
+/*
+  Copyright <2018-2024> <scott.e.graves@protonmail.com>
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+*/
+#include "utils/time.hpp"
+
+namespace repertory::utils::time {
+void get_local_time_now(struct tm &local_time) {
+  std::memset(&local_time, 0, sizeof(local_time));
+
+  const auto now =
+      std::chrono::system_clock::to_time_t(std::chrono::system_clock::now());
+#if defined(_WIN32)
+  localtime_s(&local_time, &now);
+#else  // !defined(_WIN32)
+  localtime_r(&now, &local_time);
+#endif // defined(_WIN32)
+}
+
+auto get_time_now() -> std::uint64_t {
+  return static_cast<std::uint64_t>(
+      std::chrono::duration_cast<std::chrono::nanoseconds>(
+          std::chrono::system_clock::now().time_since_epoch())
+          .count());
+}
+
+#if defined(_WIN32)
+// https://stackoverflow.com/questions/321849/strptime-equivalent-on-windows
+auto strptime(const char *s, const char *f, struct tm *tm) -> const char * {
+  std::istringstream input{s};
+  input.imbue(std::locale(setlocale(LC_ALL, nullptr)));
+  input >> std::get_time(tm, f);
+  if (input.fail()) {
+    return nullptr;
+  }
+
+  return reinterpret_cast<const char *>(s + input.tellg());
+}
+
+// https://www.frenk.com/2009/12/convert-filetime-to-unix-timestamp/
+auto unix_time_to_filetime(std::uint64_t unix_time) -> FILETIME {
+  auto win_time = unix_time_to_windows_time(unix_time);
+
+  FILETIME file_time{};
+  file_time.dwHighDateTime = static_cast<DWORD>(win_time >> 32U);
+  file_time.dwLowDateTime = win_time & 0xFFFFFFFF;
+  return file_time;
+}
+
+auto windows_file_time_to_unix_time(FILETIME win_time) -> std::uint64_t {
+  return windows_time_to_unix_time(
+      (static_cast<std::uint64_t>(win_time.dwHighDateTime) << 32ULL) |
+      static_cast<std::uint64_t>(win_time.dwLowDateTime));
+}
+
+auto windows_time_t_to_unix_time(__time64_t win_time) -> std::uint64_t {
+  return static_cast<std::uint64_t>(
+      std::chrono::duration_cast<std::chrono::nanoseconds>(
+          std::chrono::system_clock::from_time_t(win_time).time_since_epoch())
+          .count());
+}
+#endif // defined(_WIN32)
+
+auto unix_time_to_windows_time(std::uint64_t unix_time) -> std::uint64_t {
+  return (unix_time / WIN32_TIME_NANOS_PER_TICK) + WIN32_TIME_CONVERSION;
+}
+
+auto windows_time_to_unix_time(std::uint64_t win_time) -> std::uint64_t {
+  return (win_time - WIN32_TIME_CONVERSION) * WIN32_TIME_NANOS_PER_TICK;
+}
+} // namespace repertory::utils::time