yuzu/src/common/time_zone.cpp
Lioncash fe97d34156 common/time_zone: Simplify GetOsTimeZoneOffset()
We can simplify this function down into a single line with the use of
fmt. A benefit with the fmt approach is that the fmt variant of
localtime is thread-safe as well, making GetOsTimeZoneOffset()
thread-safe as well.
2020-08-16 03:58:47 -04:00

45 lines
1.2 KiB
C++

// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <chrono>
#include <ctime>
#include <fmt/chrono.h>
#include "common/logging/log.h"
#include "common/time_zone.h"
namespace Common::TimeZone {
std::string GetDefaultTimeZone() {
return "GMT";
}
static std::string GetOsTimeZoneOffset() {
// Get the current timezone offset, e.g. "-400", as a string
return fmt::format("%z", fmt::localtime(std::time(nullptr)));
}
static int ConvertOsTimeZoneOffsetToInt(const std::string& timezone) {
try {
return std::stoi(timezone);
} catch (const std::invalid_argument&) {
LOG_CRITICAL(Common, "invalid_argument with {}!", timezone);
return 0;
} catch (const std::out_of_range&) {
LOG_CRITICAL(Common, "out_of_range with {}!", timezone);
return 0;
}
}
std::chrono::seconds GetCurrentOffsetSeconds() {
const int offset{ConvertOsTimeZoneOffsetToInt(GetOsTimeZoneOffset())};
int seconds{(offset / 100) * 60 * 60}; // Convert hour component to seconds
seconds += (offset % 100) * 60; // Convert minute component to seconds
return std::chrono::seconds{seconds};
}
} // namespace Common::TimeZone