TimeStamp.cc

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#include <boost/format.hpp>
#include <sys/time.h>
#include <utl/TimeStamp.h>
#include <utl/ErrorLogger.h>
#include <utl/AugerException.h>
#include <utl/UTCDateTime.h>

using namespace std;
using namespace boost;


namespace utl {

  void
  TimeStamp::SetNormalized(long sec, double nsec)
  {
    // normalize
    const long sperns = long(second/nanosecond);
    if (nsec < 0) {
      --sec;
      nsec += sperns;
    } else if (nsec >= sperns) {
      ++sec;
      nsec -= sperns;
    }

    // must be within the GPS epoch

    if (sec >= 0) {
      fGPSSecond = sec;
      fGPSNanoSecond = nsec;

    } else {
      ostringstream err;
      err << "operation for "
             "sec = " << sec << " nsec = " << nsec << " "
             "results in time before GPS Epoch";
      ERROR(err);
      fGPSSecond = fGPSNanoSecond = 0;
      throw OutOfBoundException(err.str());
    }
  }


  TimeStamp
  GetCurrentSystemTime()
  {
    timeval tv;
    gettimeofday(&tv, nullptr);
    const tm* const time = gmtime(&tv.tv_sec);
    return
      UTCDateTime(
        time->tm_year + 1900,
        time->tm_mon + 1,
        time->tm_mday,
        time->tm_hour,
        time->tm_min,
        time->tm_sec,
        1000 * tv.tv_usec
      ).GetTimeStamp();
  }


  ostream&
  operator<<(ostream& os, const TimeStamp& ts)
  {
    os << UTCDateTime(ts) << " (UTC), ";
    const double ns = ts.GetGPSNanoSecond();
    if (ns)
      return os << format("%1%:%2$012.2f (GPS)") % ts.GetGPSSecond() % ns;
    else
      return os << format("%1% (GPS)") % ts.GetGPSSecond();
  }

}