source/samples/dtptngsample/dtptngsample.cpp

   1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /********************************************************************
   4  * COPYRIGHT:
   5  * Copyright (c) 2008-2014, International Business Machines Corporation and
   6  * others. All Rights Reserved.
   7  ********************************************************************/
   8 //! [getBestPatternExample1]
   9 #include <iostream>
  10 #include "unicode/smpdtfmt.h"
  11 #include "unicode/dtptngen.h"
  12 #include "unicode/ustdio.h"
  13 //! [getBestPatternExample1]
  14
  15 using namespace std;
  16
  17 static void getBestPatternExample() {
  18
  19                 u_printf("========================================================================\n");
  20                 u_printf(" getBestPatternExample()\n");
  21         u_printf("\n");
  22         u_printf(" Use DateTimePatternGenerator to create customized date/time pattern:\n");
  23         u_printf(" yQQQQ,yMMMM, MMMMd, hhmm, jjmm per locale\n");
  24         u_printf("========================================================================\n");
  25                 //! [getBestPatternExample]
  26         UnicodeString skeletons [] = {
  27                 UnicodeString("yQQQQ"), // year + full name of quarter, i.e., 4th quarter 1999
  28         UnicodeString("yMMMM"), // year + full name of month, i.e., October 1999
  29         UnicodeString("MMMMd"), // full name of month + day of the month, i.e., October 25
  30         UnicodeString("hhmm"),  // 12-hour-cycle format, i.e., 1:32 PM
  31         UnicodeString("jjmm"), // preferred hour format for the given locale, i.e., 24-hour-cycle format for fr_FR
  32                 0,
  33         };
  34
  35         Locale locales[] = {
  36                 Locale ("en_US"),
  37                 Locale ("fr_FR"),
  38                 Locale ("zh_CN"),
  39         };
  40
  41         const char* filename = "sample.txt";
  42         /* open a UTF-8 file for writing */
  43         UFILE* f = u_fopen(filename, "w", NULL,"UTF-8");
  44         UnicodeString dateReturned;
  45         UErrorCode status =U_ZERO_ERROR;
  46         Calendar *cal = Calendar::createInstance(status);
  47         cal->set (1999,9,13,23,58,59);
  48         UDate date = cal->getTime(status);
  49         u_fprintf(f, "%-20S%-20S%-20S%-20S\n", UnicodeString("Skeleton").getTerminatedBuffer(),UnicodeString("en_US").getTerminatedBuffer(),UnicodeString("fr_FR").getTerminatedBuffer(),UnicodeString("zh_CN").getTerminatedBuffer());
  50         for (int i=0;skeletons[i]!=NULL;i++) {
  51                 u_fprintf(f, "%-20S",skeletons[i].getTerminatedBuffer());
  52                 for (int j=0;j<sizeof(locales)/sizeof(locales[0]);j++) {
  53                         // create a DateTimePatternGenerator instance for given locale
  54                         DateTimePatternGenerator *dtfg= DateTimePatternGenerator::createInstance(locales[j],status);
  55                         // use getBestPattern method to get the best pattern for the given skeleton
  56                         UnicodeString pattern = dtfg->getBestPattern(skeletons[i],status);
  57                         // Constructs a SimpleDateFormat with the best pattern generated above and the given locale
  58                         SimpleDateFormat *sdf = new SimpleDateFormat(pattern,locales[j],status);
  59                         dateReturned.remove();
  60                         // Get the format of the given date
  61                         sdf->format(date,dateReturned,status);
  62                         /* write Unicode string to file */
  63                         u_fprintf(f, "%-20S", dateReturned.getTerminatedBuffer());
  64                         delete dtfg;
  65                         delete sdf;
  66                 }
  67                 u_fprintf(f,"\n");
  68         }
  69         /* close the file resource */
  70         u_fclose(f);
  71         delete cal;
  72         //! [getBestPatternExample]
  73 }
  74
  75 static void addPatternExample() {
  76
  77                 u_printf("========================================================================\n");
  78         u_printf(" addPatternExample()\n");
  79                 u_printf("\n");
  80         u_printf(" Use addPattern API to add new '. von' to existing pattern\n");
  81         u_printf("========================================================================\n");
  82                 //! [addPatternExample]
  83                 UErrorCode status =U_ZERO_ERROR;
  84                 UnicodeString conflictingPattern,dateReturned, pattern;
  85                 Locale locale=Locale::getFrance();
  86                 Calendar *cal = Calendar::createInstance(status);
  87                 cal->set (1999,9,13,23,58,59);
  88                 UDate date = cal->getTime(status);
  89         // Create an DateTimePatternGenerator instance for the given locale
  90                 DateTimePatternGenerator *dtfg= DateTimePatternGenerator::createInstance(locale,status);
  91                 SimpleDateFormat *sdf = new SimpleDateFormat(dtfg->getBestPattern("MMMMddHmm",status),locale,status);
  92         // Add '. von' to the existing pattern
  93         dtfg->addPattern("dd'. von' MMMM", true, conflictingPattern,status);
  94         // Apply the new pattern
  95         sdf->applyPattern(dtfg->getBestPattern("MMMMddHmm",status));
  96                 dateReturned = sdf->format(date, dateReturned, status);
  97                 pattern =sdf->toPattern(pattern);
  98                 u_printf("%s\n", "New Pattern for FRENCH: ");
  99         u_printf("%S\n", pattern.getTerminatedBuffer());
 100                 u_printf("%s\n", "Date Time in new Pattern: ");
 101                 u_printf("%S\n", dateReturned.getTerminatedBuffer());
 102                 delete dtfg;
 103                 delete sdf;
 104                 delete cal;
 105
 106                 //! [addPatternExample]
 107         /* output of the sample code:
 108         ************************************************************************************************
 109          New Pattern for FRENCH: dd. 'von' MMMM HH:mm
 110          Date Time in new Pattern: 13. von octobre 23:58
 111
 112         *************************************************************************************************/
 113         }
 114
 115 static void replaceFieldTypesExample() {
 116                 // Use repalceFieldTypes API to replace zone 'zzzz' with 'vvvv'
 117        u_printf("========================================================================\n");
 118        u_printf(" replaceFieldTypeExample()\n");
 119        u_printf("\n");
 120        u_printf(" Use replaceFieldTypes API to replace zone 'zzzz' with 'vvvv'\n");
 121        u_printf("========================================================================\n");
 122            //! [replaceFieldTypesExample]
 123                 UFILE *out = u_finit(stdout, NULL, "UTF-8");
 124                 UErrorCode status =U_ZERO_ERROR;
 125                 UnicodeString pattern,dateReturned;
 126                 Locale locale =Locale::getFrance();
 127                 Calendar *cal = Calendar::createInstance(status);
 128                 cal->set (1999,9,13,23,58,59);
 129                 UDate date = cal->getTime(status);
 130                 TimeZone *zone = TimeZone::createTimeZone(UnicodeString("Europe/Paris"));
 131                 DateTimePatternGenerator *dtfg = DateTimePatternGenerator::createInstance(locale,status);
 132             SimpleDateFormat *sdf = new SimpleDateFormat("EEEE d MMMM y HH:mm:ss zzzz",locale,status);
 133                 sdf->setTimeZone(*zone);
 134                 pattern = sdf->toPattern(pattern);
 135                 u_fprintf(out, "%S\n", UnicodeString("Pattern before replacement:").getTerminatedBuffer());
 136         u_fprintf(out, "%S\n", pattern.getTerminatedBuffer());
 137                 dateReturned.remove();
 138                 dateReturned = sdf->format(date, dateReturned, status);
 139                 u_fprintf(out, "%S\n", UnicodeString("Date/Time format in fr_FR:").getTerminatedBuffer());
 140                 u_fprintf(out, "%S\n", dateReturned.getTerminatedBuffer());
 141         // Replace zone "zzzz" in the pattern with "vvvv"
 142                 UnicodeString newPattern = dtfg->replaceFieldTypes(pattern, "vvvv", status);
 143                 // Apply the new pattern
 144                 sdf->applyPattern(newPattern);
 145                 dateReturned.remove();
 146                 dateReturned = sdf->format(date, dateReturned, status);
 147                 u_fprintf(out, "%S\n", UnicodeString("Pattern after replacement:").getTerminatedBuffer());
 148         u_fprintf(out, "%S\n", newPattern.getTerminatedBuffer());
 149         u_fprintf(out, "%S\n", UnicodeString("Date/Time format in fr_FR:").getTerminatedBuffer());
 150                 u_fprintf(out, "%S\n", dateReturned.getTerminatedBuffer());
 151                 delete sdf;
 152                 delete dtfg;
 153                 delete zone;
 154                 delete cal;
 155                 u_fclose(out);
 156         //! [replaceFieldTypesExample]
 157     }
 158
 159 int main (int argc, char* argv[])
 160 {
 161         getBestPatternExample();
 162         addPatternExample();
 163         replaceFieldTypesExample();
 164         return 0;
 165 }