icuSources/samples/datefmt/main.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 using namespace icu;
  19
  20 /**
  21  * If the ID supplied to TimeZone is not a valid system ID,
  22  * TimeZone::createTimeZone() will return a GMT zone object.  In order
  23  * to detect this error, we check the ID of the returned zone against
  24  * the ID we requested.  If they don't match, we fail with an error.
  25  */
  26 TimeZone* createZone(const UnicodeString& id) {
  27     UnicodeString str;
  28     TimeZone* zone = TimeZone::createTimeZone(id);
  29     if (zone->getID(str) != id) {
  30         delete zone;
  31         printf("Error: TimeZone::createTimeZone(");
  32         uprintf(id);
  33         printf(") returned zone with ID ");
  34         uprintf(str);
  35         printf("\n");
  36         exit(1);
  37     }
  38     return zone;
  39 }
  40
  41 int main(int argc, char **argv) {
  42
  43     Calendar *cal;
  44     TimeZone *zone;
  45     DateFormat *fmt;
  46     UErrorCode status = U_ZERO_ERROR;
  47     UnicodeString str;
  48     UDate date;
  49
  50     // The languages in which we will display the date
  51     static char* LANGUAGE[] = {
  52         "en", "de", "fr"
  53     };
  54     static const int32_t N_LANGUAGE = sizeof(LANGUAGE)/sizeof(LANGUAGE[0]);
  55
  56     // The time zones in which we will display the time
  57     static char* TIMEZONE[] = {
  58         "America/Los_Angeles",
  59         "America/New_York",
  60         "Europe/Paris",
  61         "Europe/Berlin"
  62     };
  63     static const int32_t N_TIMEZONE = sizeof(TIMEZONE)/sizeof(TIMEZONE[0]);
  64
  65     // Create a calendar
  66     cal = Calendar::createInstance(status);
  67     check(status, "Calendar::createInstance");
  68     zone = createZone("GMT"); // Create a GMT zone
  69     cal->adoptTimeZone(zone);
  70     cal->clear();
  71     cal->set(1999, Calendar::JUNE, 4);
  72     date = cal->getTime(status);
  73     check(status, "Calendar::getTime");
  74
  75     for (int32_t i=0; i<N_LANGUAGE; ++i) {
  76         Locale loc(LANGUAGE[i]);
  77
  78         // Create a formatter for DATE and TIME
  79         fmt = DateFormat::createDateTimeInstance(
  80                                 DateFormat::kFull, DateFormat::kFull, loc);
  81
  82         for (int32_t j=0; j<N_TIMEZONE; ++j) {
  83
  84             cal->adoptTimeZone(createZone(TIMEZONE[j]));
  85             fmt->setCalendar(*cal);
  86
  87             // Format the date
  88             str.remove();
  89             fmt->format(date, str, status);
  90
  91             // Display the formatted date string
  92             printf("Date (%s, %s): ", LANGUAGE[i], TIMEZONE[j]);
  93             uprintf(escape(str));
  94             printf("\n\n");
  95         }
  96
  97         delete fmt;
  98     }
  99
 100     printf("Exiting successfully\n");
 101     return 0;
 102 }