icuSources/samples/datefmt/answers/main_3.cpp

   1 /********************************************************************
   2  *   © 2016 and later: Unicode, Inc. and others.
   3  *   License & terms of use: http://www.unicode.org/copyright.html#License
   4  *************************************************************************
   5  *************************************************************************
   6  * COPYRIGHT:
   7  * Copyright (c) 1999-2003, International Business Machines Corporation and
   8  * others. All Rights Reserved.
   9  *************************************************************************/
  10
  11 #include "unicode/unistr.h"
  12 #include "unicode/calendar.h"
  13 #include "unicode/datefmt.h"
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include "util.h"
  17
  18 /**
  19  * If the ID supplied to TimeZone is not a valid system ID,
  20  * TimeZone::createTimeZone() will return a GMT zone object.  In order
  21  * to detect this error, we check the ID of the returned zone against
  22  * the ID we requested.  If they don't match, we fail with an error.
  23  */
  24 TimeZone* createZone(const UnicodeString& id) {
  25     UnicodeString str;
  26     TimeZone* zone = TimeZone::createTimeZone(id);
  27     if (zone->getID(str) != id) {
  28         delete zone;
  29         printf("Error: TimeZone::createTimeZone(");
  30         uprintf(id);
  31         printf(") returned zone with ID ");
  32         uprintf(str);
  33         printf("\n");
  34         exit(1);
  35     }
  36     return zone;
  37 }
  38
  39 int main(int argc, char **argv) {
  40
  41     Calendar *cal;
  42     TimeZone *zone;
  43     DateFormat *fmt;
  44     UErrorCode status = U_ZERO_ERROR;
  45     UnicodeString str;
  46     UDate date;
  47
  48     // The languages in which we will display the date
  49     static char* LANGUAGE[] = {
  50         "en", "de", "fr"
  51     };
  52     static const int32_t N_LANGUAGE = sizeof(LANGUAGE)/sizeof(LANGUAGE[0]);
  53
  54     // The time zones in which we will display the time
  55     static char* TIMEZONE[] = {
  56         "America/Los_Angeles",
  57         "America/New_York",
  58         "Europe/Paris",
  59         "Europe/Berlin"
  60     };
  61     static const int32_t N_TIMEZONE = sizeof(TIMEZONE)/sizeof(TIMEZONE[0]);
  62
  63     // Create a calendar
  64     cal = Calendar::createInstance(status);
  65     check(status, "Calendar::createInstance");
  66     zone = createZone("GMT"); // Create a GMT zone
  67     cal->adoptTimeZone(zone);
  68     cal->clear();
  69     cal->set(1999, Calendar::JUNE, 4);
  70     date = cal->getTime(status);
  71     check(status, "Calendar::getTime");
  72
  73     for (int32_t i=0; i<N_LANGUAGE; ++i) {
  74         Locale loc(LANGUAGE[i]);
  75
  76         // Create a formatter for DATE and TIME
  77         fmt = DateFormat::createDateTimeInstance(
  78                                 DateFormat::kFull, DateFormat::kFull, loc);
  79
  80         for (int32_t j=0; j<N_TIMEZONE; ++j) {
  81
  82             cal->adoptTimeZone(createZone(TIMEZONE[j]));
  83             fmt->setCalendar(*cal);
  84
  85             // Format the date
  86             str.remove();
  87             fmt->format(date, str, status);
  88
  89             // Display the formatted date string
  90             printf("Date (%s, %s): ", LANGUAGE[i], TIMEZONE[j]);
  91             uprintf(escape(str));
  92             printf("\n\n");
  93         }
  94
  95         delete fmt;
  96     }
  97
  98     printf("Exiting successfully\n");
  99     return 0;
 100 }