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#include "base/assert.hpp"
#include "base/macros.hpp"
#include "base/timegm.hpp"
#include "base/timer.hpp"
#include "std/target_os.hpp"
#include <algorithm>
#include <chrono>
#include <cstdio>
#include <iomanip>
#include <sstream>
#include <sys/time.h>
#ifndef OMIM_OS_LINUX
using std::get_time;
using std::put_time;
#else
#include <cassert>
namespace detail
{
template <class _CharT> struct get_time_manip
{
tm* __tm_;
const _CharT* __fmt_;
get_time_manip(tm* __tm, const _CharT* __fmt)
: __tm_(__tm), __fmt_(__fmt) {}
};
template <class _CharT, class _Traits>
class stream_buf_impl : public std::basic_streambuf<_CharT, _Traits>
{
typedef std::basic_streambuf<_CharT, _Traits> base_t;
public:
bool parse(const get_time_manip<_CharT>& __x)
{
// Workaround works only for a stream buffer under null-terminated string.
assert(*base_t::egptr() == 0);
char * res = ::strptime(base_t::gptr(), __x.__fmt_, __x.__tm_);
if (res == 0)
return false;
else
{
base_t::setg(base_t::eback(), res, base_t::egptr());
return true;
}
}
};
template <class _CharT, class _Traits>
std::basic_istream<_CharT, _Traits>&
operator>>(std::basic_istream<_CharT, _Traits>& __is, const get_time_manip<_CharT>& __x)
{
if (!reinterpret_cast<stream_buf_impl<_CharT, _Traits>*>(__is.rdbuf())->parse(__x))
__is.setstate(std::ios_base::failbit);
return __is;
}
}
template <class _CharT>
detail::get_time_manip<_CharT> get_time(tm* __tm, const _CharT* __fmt)
{
return detail::get_time_manip<_CharT>(__tm, __fmt);
}
#endif
namespace my
{
Timer::Timer(bool start/* = true*/)
{
if (start)
Reset();
}
// static
double Timer::LocalTime()
{
#ifdef OMIM_OS_WINDOWS_NATIVE
FILETIME ft;
GetSystemTimeAsFileTime(&ft);
uint64_t val = ft.dwHighDateTime;
val <<= 32;
val += ft.dwLowDateTime;
return val / 10000000.0;
#else
timeval tv;
::gettimeofday(&tv, 0);
return tv.tv_sec + tv.tv_usec / 1000000.0;
#endif
}
std::string FormatCurrentTime()
{
time_t t = time(NULL);
std::string s(ctime(&t));
replace(s.begin(), s.end(), ' ', '_');
ASSERT_GREATER(s.size(), 1, ());
s.resize(s.size() - 1);
return s;
}
uint32_t GenerateYYMMDD(int year, int month, int day)
{
uint32_t result = (year - 100) * 100;
result = (result + month + 1) * 100;
result = result + day;
return result;
}
uint64_t SecondsSinceEpoch()
{
return TimeTToSecondsSinceEpoch(::time(nullptr));
}
std::string TimestampToString(time_t time)
{
if (time == INVALID_TIME_STAMP)
return std::string("INVALID_TIME_STAMP");
tm * t = gmtime(&time);
char buf[21] = { 0 };
#ifdef OMIM_OS_WINDOWS
sprintf_s(buf, ARRAY_SIZE(buf), "%04d-%02d-%02dT%02d:%02d:%02dZ", t->tm_year + 1900,
t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
#else
::snprintf(buf, ARRAY_SIZE(buf), "%04d-%02d-%02dT%02d:%02d:%02dZ", t->tm_year + 1900,
t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
#endif
return buf;
}
namespace
{
bool IsValid(tm const & t)
{
/// @todo Funny thing, but "00" month is accepted as valid in get_time function.
/// Seems like a bug in the std library.
return (t.tm_mday >= 1 && t.tm_mday <= 31 &&
t.tm_mon >= 0 && t.tm_mon <= 11);
}
}
time_t StringToTimestamp(std::string const & s)
{
// Return current time in the case of failure
time_t res = INVALID_TIME_STAMP;
if (s.size() == 20)
{
// Parse UTC format: 1970-01-01T00:00:00Z
tm t{};
std::istringstream ss(s);
ss >> get_time(&t, "%Y-%m-%dT%H:%M:%SZ");
if (!ss.fail() && IsValid(t))
res = base::TimeGM(t);
}
else if (s.size() == 25)
{
// Parse custom time zone offset format: 2012-12-03T00:38:34+03:30
tm t1{}, t2{};
char sign;
std::istringstream ss(s);
ss >> get_time(&t1, "%Y-%m-%dT%H:%M:%S") >> sign >> get_time(&t2, "%H:%M");
if (!ss.fail() && IsValid(t1))
{
time_t const tt = base::TimeGM(t1);
// Fix timezone offset
if (sign == '-')
res = tt + t2.tm_hour * 3600 + t2.tm_min * 60;
else if (sign == '+')
res = tt - t2.tm_hour * 3600 - t2.tm_min * 60;
}
}
return res;
}
HighResTimer::HighResTimer(bool start/* = true*/)
{
if (start)
Reset();
}
void HighResTimer::Reset()
{
m_start = std::chrono::high_resolution_clock::now();
}
uint64_t HighResTimer::ElapsedNano() const
{
return std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now() - m_start).count();
}
uint64_t HighResTimer::ElapsedMillis() const
{
return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::high_resolution_clock::now() - m_start).count();
}
double HighResTimer::ElapsedSeconds() const
{
return std::chrono::duration_cast<std::chrono::duration<double>>(std::chrono::high_resolution_clock::now() - m_start).count();
}
time_t SecondsSinceEpochToTimeT(uint64_t secondsSinceEpoch)
{
std::chrono::time_point<std::chrono::system_clock> const tpoint{std::chrono::seconds(secondsSinceEpoch)};
return std::chrono::system_clock::to_time_t(tpoint);
}
uint64_t TimeTToSecondsSinceEpoch(time_t time)
{
auto const tpoint = std::chrono::system_clock::from_time_t(time);
return std::chrono::duration_cast<std::chrono::seconds>(tpoint.time_since_epoch()).count();
}
}
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