ceph/src/boost/libs/date_time/example/posix_time/time_periods.cpp

   1 /* Some simple examples of constructing and calculating with times
   2  * Returns:
   3  * [2002-Feb-01 00:00:00/2002-Feb-01 23:59:59.999999999] contains 2002-Feb-01 03:00:05
   4  * [2002-Feb-01 00:00:00/2002-Feb-01 23:59:59.999999999] intersected with
   5  * [2002-Feb-01 00:00:00/2002-Feb-01 03:00:04.999999999] is
   6  * [2002-Feb-01 00:00:00/2002-Feb-01 03:00:04.999999999]
   7  */
   8
   9 #include "boost/date_time/posix_time/posix_time.hpp"
  10 #include <iostream>
  11
  12 using namespace boost::posix_time;
  13 using namespace boost::gregorian;
  14
  15 //Create a simple period class to contain all the times in a day
  16 class day_period : public time_period
  17 {
  18 public:
  19   day_period(date d) : time_period(ptime(d),//midnight
  20                                    ptime(d,hours(24)))
  21   {}
  22
  23 };
  24
  25 int
  26 main()
  27 {
  28
  29   date d(2002,Feb,1); //an arbitrary date
  30   //a period that represents a day
  31   day_period dp(d);
  32   ptime t(d, hours(3)+seconds(5)); //an arbitray time on that day
  33   if (dp.contains(t)) {
  34     std::cout << to_simple_string(dp) << " contains "
  35               << to_simple_string(t)  << std::endl;
  36   }
  37   //a period that represents part of the day
  38   time_period part_of_day(ptime(d, hours(0)), t);
  39   //intersect the 2 periods and print the results
  40   if (part_of_day.intersects(dp)) {
  41     time_period result = part_of_day.intersection(dp);
  42     std::cout << to_simple_string(dp) << " intersected with\n"
  43               << to_simple_string(part_of_day) << " is \n"
  44               << to_simple_string(result) << std::endl;
  45   }
  46
  47
  48   return 0;
  49 }
  50
  51
  52 /*  Copyright 2001-2004: CrystalClear Software, Inc
  53  *  http://www.crystalclearsoftware.com
  54  *
  55  *  Subject to the Boost Software License, Version 1.0.
  56  * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
  57  */
  58