1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
#ifndef OPENMW_COMPONENTS_MISC_TIMECONVERT_H
#define OPENMW_COMPONENTS_MISC_TIMECONVERT_H
#include <cerrno>
#include <chrono>
#include <cstring>
#include <ctime>
#include <filesystem>
#include <iomanip>
#include <sstream>
#include <string>
#include <system_error>
namespace Misc
{
inline std::time_t toTimeT(std::filesystem::file_time_type tp)
{
// Note: this conversion has a precision loss, so it should not be used in exact comparisons
// or another cases when milliseconds matter.
auto systemTime = time_point_cast<std::chrono::system_clock::duration>(
tp - std::filesystem::file_time_type::clock::now() + std::chrono::system_clock::now());
return std::chrono::system_clock::to_time_t(systemTime);
}
inline std::string timeTToString(const std::time_t tp, const char* fmt)
{
tm time_info{};
#ifdef _WIN32
if (const errno_t error = localtime_s(&time_info, &tp); error != 0)
throw std::system_error(error, std::generic_category());
#else
if (localtime_r(&tp, &time_info) == nullptr)
throw std::system_error(errno, std::generic_category());
#endif
std::stringstream out;
out << std::put_time(&time_info, fmt);
return out.str();
}
inline std::string fileTimeToString(const std::filesystem::file_time_type& tp, const char* fmt)
{
return timeTToString(toTimeT(tp), fmt);
}
inline std::string timeToString(const std::chrono::system_clock::time_point& tp, const char* fmt)
{
return timeTToString(std::chrono::system_clock::to_time_t(tp), fmt);
}
} // namespace Misc
#endif
|
