这就是我会做它拥抱多一点的C++ 11
std::string timepointToString(std::chrono::system_clock::time_point const& t) {
time_t tt = std::chrono::system_clock::to_time_t(t);
struct tm tb;
size_t const len(21);
char buffer[len];
TRI_gmtime(tt, &tb);
::strftime(buffer, sizeof(buffer), "%Y-%m-%dT%H:%M:%SZ", &tb);
return std::string(buffer, len - 1);
}
std::chrono::system_clock::time_point stringToTimepoint(std::string const& s) {
if (!s.empty()) {
try {
std::tm tt;
tt.tm_year = std::stoi(s.substr(0, 4)) - 1900;
tt.tm_mon = std::stoi(s.substr(5, 2)) - 1;
tt.tm_mday = std::stoi(s.substr(8, 2));
tt.tm_hour = std::stoi(s.substr(11, 2));
tt.tm_min = std::stoi(s.substr(14, 2));
tt.tm_sec = std::stoi(s.substr(17, 2));
tt.tm_isdst = 0;
auto time_c = TRI_timegm(&tt);
return std::chrono::system_clock::from_time_t(time_c);
} catch (...) {}
}
return std::chrono::time_point<std::chrono::system_clock>();
}
如果你有'unsigned char year = 99;'是否意味着2099或1999? –
我只需要现在和将来的时间。所以这意味着2099,通常是“年+ 2000” – sukovanej
请[编辑]你的问题,并明确_there_。 –