ceph/src/boost/libs/date_time/example/gregorian/print_holidays.cpp

   1 /* Generate a set of dates using a collection of date generators
   2  * Output looks like:
   3  * Enter Year: 2002
   4  * 2002-Jan-01 [Tue]
   5  * 2002-Jan-21 [Mon]
   6  * 2002-Feb-12 [Tue]
   7  * 2002-Jul-04 [Thu]
   8  * 2002-Sep-02 [Mon]
   9  * 2002-Nov-28 [Thu]
  10  * 2002-Dec-25 [Wed]
  11  * Number Holidays: 7
  12  */
  13
  14 #include "boost/date_time/gregorian/gregorian.hpp"
  15 #include <algorithm>
  16 #include <functional>
  17 #include <vector>
  18 #include <iostream>
  19 #include <set>
  20
  21 void
  22 print_date(boost::gregorian::date d)
  23 {
  24   using namespace boost::gregorian;
  25 #if defined(BOOST_DATE_TIME_NO_LOCALE)
  26   std::cout << to_simple_string(d) << " [" << d.day_of_week() << "]\n";
  27 #else
  28   std::cout << d << " [" << d.day_of_week() << "]\n";
  29 #endif
  30 }
  31
  32
  33 int
  34 main() {
  35
  36   std::cout << "Enter Year: ";
  37   int year;
  38   std::cin >> year;
  39
  40   using namespace boost::gregorian;
  41
  42   //define a collection of holidays fixed by month and day
  43   std::vector<year_based_generator*> holidays;
  44   holidays.push_back(new partial_date(1,Jan)); //Western New Year
  45   holidays.push_back(new partial_date(4,Jul)); //US Independence Day
  46   holidays.push_back(new partial_date(25, Dec));//Christmas day
  47
  48
  49   //define a shorthand for the nth_day_of_the_week_in_month function object
  50   typedef nth_day_of_the_week_in_month nth_dow;
  51
  52   //US labor day
  53   holidays.push_back(new nth_dow(nth_dow::first,  Monday,   Sep));
  54   //MLK Day
  55   holidays.push_back(new nth_dow(nth_dow::third,  Monday,   Jan));
  56   //Pres day
  57   holidays.push_back(new nth_dow(nth_dow::second, Tuesday,  Feb));
  58   //Thanksgiving
  59   holidays.push_back(new nth_dow(nth_dow::fourth, Thursday, Nov));
  60
  61   typedef std::set<date> date_set;
  62   date_set all_holidays;
  63
  64   for(std::vector<year_based_generator*>::iterator it = holidays.begin();
  65       it != holidays.end(); ++it)
  66   {
  67     all_holidays.insert((*it)->get_date(year));
  68   }
  69
  70   //print the holidays to the screen
  71   std::for_each(all_holidays.begin(), all_holidays.end(), print_date);
  72   std::cout << "Number Holidays: " << all_holidays.size() << std::endl;
  73
  74   return 0;
  75 }
  76
  77 /*  Copyright 2001-2004: CrystalClear Software, Inc
  78  *  http://www.crystalclearsoftware.com
  79  *
  80  *  Subject to the Boost Software License, Version 1.0.
  81  * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
  82  */
  83