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/*
Here's an example that demonstrates use of dates, times, time
calculations, time zones, regular expressions, and internationalization
features. It solves the following problem:
Imagine you have scheduled a trip form New York to Paris. You will
leave New York on March 31, 1995 at 11:00 PM. What will the clock
show in Paris when you arrive?
*/
#include <iostream.h>
#include <rw/locale.h>
#include <rw/rwdate.h>
#include <rw/rwtime.h>
#include <rw/cstring.h>
#include <rw/regexp.h>
int main (int argc, char** argv)
{
// Set the "preferred" locale as the global default:
RWLocale::global (new RWLocaleSnapshot(""));
//Construct time zones for New York and Paris:
RWZoneSimple newYorkZone (RWZone::USEastern, RWZone::NoAm);
RWZoneSimple parisZone( RWZone::Europe, RWZone::WeEu);
// The flight is about 7 hours long:
RWTime leaveNewYork (RWDate (31, 03, 1995), 23,00,00, newYorkZone);
RWTime arriveParis (leaveNewYork + long(7 * 3600));
// Let's construct an announcement string...
RWCString announce = (argc > 1) ?
argv [1] : "Arrive in Paris on %T, local time.";
// ... and substitute the arrival time into it:
RWCRegexp pattern ("%T");
announce (pattern) = arriveParis.asString ('c', parisZone);
cout << announce << endl;
return 0;
}
$ arrival
the program displays:
Arrive in Paris on Sat Apr 01 13:00:00 1995, local time.
$ LANG=fr arrival "Arrive au Paris `a %T, heure local."
the program displays:
Arrive au Paris `a sam 1avr 95, 13:00:00 MET DST, heure local.