// Copyright (C) 2010, Guy Barrand. All rights reserved.
// See the file tools.license for terms.

#ifndef tools_wroot_date
#define tools_wroot_date

//_MSC_VER (= Microsoft VisualC++) :
//  localtime_r() does not exist on Windows and we can't use the
//  Windows ::GetLocalTime() since G4 do not want to include windows.h.
//  Then we stay with the not thread safe localtime().

#include <time.h>

namespace tools {
namespace wroot {

typedef unsigned int date;

inline date get_date(){
  // Set Date/Time to current time as reported by the system.
  // Date and Time are encoded into one single unsigned 32 bit word.
  // Date is stored with the origin being the 1st january 1995.
  // Time has 1 second precision.
  time_t tloc = ::time(0);
#if defined(_MSC_VER) || defined(__MINGW32__)
  struct tm *tp = (tm*)::localtime(&tloc); //not thread safe (but exist on Windows).
#else
  struct tm tpa;
  struct tm *tp = (tm*)::localtime_r(&tloc, &tpa); //does not exist on Windows.
#endif
  unsigned int _year   = tp->tm_year;
  unsigned int _month  = tp->tm_mon + 1;
  unsigned int _day    = tp->tm_mday;
  unsigned int _hour   = tp->tm_hour;
  unsigned int _min    = tp->tm_min;
  unsigned int _sec    = tp->tm_sec;
  return ((_year-95)<<26 | _month<<22 | _day<<17 | _hour<<12 | _min<<6 | _sec);
}

}}

#endif