icuSources/samples/dtptngsample/dtptngsample.cpp

   1 // © 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 using namespace icu;
  17
  18 static void getBestPatternExample() {
  19
  20                 u_printf("========================================================================\n");
  21                 u_printf(" getBestPatternExample()\n");
  22         u_printf("\n");
  23         u_printf(" Use DateTimePatternGenerator to create customized date/time pattern:\n");
  24         u_printf(" yQQQQ,yMMMM, MMMMd, hhmm, jjmm per locale\n");
  25         u_printf("========================================================================\n");
  26                 //! [getBestPatternExample]
  27         UnicodeString skeletons [] = {
  28                 UnicodeString("yQQQQ"), // year + full name of quarter, i.e., 4th quarter 1999
  29         UnicodeString("yMMMM"), // year + full name of month, i.e., October 1999
  30         UnicodeString("MMMMd"), // full name of month + day of the month, i.e., October 25
  31         UnicodeString("hhmm"),  // 12-hour-cycle format, i.e., 1:32 PM
  32         UnicodeString("jjmm"), // preferred hour format for the given locale, i.e., 24-hour-cycle format for fr_FR
  33                 0,
  34         };
  35
  36         Locale locales[] = {
  37                 Locale ("en_US"),
  38                 Locale ("fr_FR"),
  39                 Locale ("zh_CN"),
  40         };
  41
  42         const char* filename = "sample.txt";
  43         /* open a UTF-8 file for writing */
  44         UFILE* f = u_fopen(filename, "w", NULL,"UTF-8");
  45         UnicodeString dateReturned;
  46         UErrorCode status =U_ZERO_ERROR;
  47         Calendar *cal = Calendar::createInstance(status);
  48         cal->set (1999,9,13,23,58,59);
  49         UDate date = cal->getTime(status);
  50         u_fprintf(f, "%-20S%-20S%-20S%-20S\n", UnicodeString("Skeleton").getTerminatedBuffer(),UnicodeString("en_US").getTerminatedBuffer(),UnicodeString("fr_FR").getTerminatedBuffer(),UnicodeString("zh_CN").getTerminatedBuffer());
  51         for (int i=0;skeletons[i]!=NULL;i++) {
  52                 u_fprintf(f, "%-20S",skeletons[i].getTerminatedBuffer());
  53                 for (int j=0;j<sizeof(locales)/sizeof(locales[0]);j++) {
  54                         // create a DateTimePatternGenerator instance for given locale
  55                         DateTimePatternGenerator *dtfg= DateTimePatternGenerator::createInstance(locales[j],status);
  56                         // use getBestPattern method to get the best pattern for the given skeleton
  57                         UnicodeString pattern = dtfg->getBestPattern(skeletons[i],status);
  58                         // Constructs a SimpleDateFormat with the best pattern generated above and the given locale
  59                         SimpleDateFormat *sdf = new SimpleDateFormat(pattern,locales[j],status);
  60                         dateReturned.remove();
  61                         // Get the format of the given date
  62                         sdf->format(date,dateReturned,status);
  63                         /* write Unicode string to file */
  64                         u_fprintf(f, "%-20S", dateReturned.getTerminatedBuffer());
  65                         delete dtfg;
  66                         delete sdf;
  67                 }
  68                 u_fprintf(f,"\n");
  69         }
  70         /* close the file resource */
  71         u_fclose(f);
  72         delete cal;
  73         //! [getBestPatternExample]
  74 }
  75
  76 static void addPatternExample() {
  77
  78                 u_printf("========================================================================\n");
  79         u_printf(" addPatternExample()\n");
  80                 u_printf("\n");
  81         u_printf(" Use addPattern API to add new '. von' to existing pattern\n");
  82         u_printf("========================================================================\n");
  83                 //! [addPatternExample]
  84                 UErrorCode status =U_ZERO_ERROR;
  85                 UnicodeString conflictingPattern,dateReturned, pattern;
  86                 Locale locale=Locale::getFrance();
  87                 Calendar *cal = Calendar::createInstance(status);
  88                 cal->set (1999,9,13,23,58,59);
  89                 UDate date = cal->getTime(status);
  90         // Create an DateTimePatternGenerator instance for the given locale
  91                 DateTimePatternGenerator *dtfg= DateTimePatternGenerator::createInstance(locale,status);
  92                 SimpleDateFormat *sdf = new SimpleDateFormat(dtfg->getBestPattern("MMMMddHmm",status),locale,status);
  93         // Add '. von' to the existing pattern
  94         dtfg->addPattern("dd'. von' MMMM", true, conflictingPattern,status);
  95         // Apply the new pattern
  96         sdf->applyPattern(dtfg->getBestPattern("MMMMddHmm",status));
  97                 dateReturned = sdf->format(date, dateReturned, status);
  98                 pattern =sdf->toPattern(pattern);
  99                 u_printf("%s\n", "New Pattern for FRENCH: ");
 100         u_printf("%S\n", pattern.getTerminatedBuffer());
 101                 u_printf("%s\n", "Date Time in new Pattern: ");
 102                 u_printf("%S\n", dateReturned.getTerminatedBuffer());
 103                 delete dtfg;
 104                 delete sdf;
 105                 delete cal;
 106
 107                 //! [addPatternExample]
 108         /* output of the sample code:
 109         ************************************************************************************************
 110          New Pattern for FRENCH: dd. 'von' MMMM HH:mm
 111          Date Time in new Pattern: 13. von octobre 23:58
 112
 113         *************************************************************************************************/
 114         }
 115
 116 static void replaceFieldTypesExample() {
 117                 // Use repalceFieldTypes API to replace zone 'zzzz' with 'vvvv'
 118        u_printf("========================================================================\n");
 119        u_printf(" replaceFieldTypeExample()\n");
 120        u_printf("\n");
 121        u_printf(" Use replaceFieldTypes API to replace zone 'zzzz' with 'vvvv'\n");
 122        u_printf("========================================================================\n");
 123            //! [replaceFieldTypesExample]
 124                 UFILE *out = u_finit(stdout, NULL, "UTF-8");
 125                 UErrorCode status =U_ZERO_ERROR;
 126                 UnicodeString pattern,dateReturned;
 127                 Locale locale =Locale::getFrance();
 128                 Calendar *cal = Calendar::createInstance(status);
 129                 cal->set (1999,9,13,23,58,59);
 130                 UDate date = cal->getTime(status);
 131                 TimeZone *zone = TimeZone::createTimeZone(UnicodeString("Europe/Paris"));
 132                 DateTimePatternGenerator *dtfg = DateTimePatternGenerator::createInstance(locale,status);
 133             SimpleDateFormat *sdf = new SimpleDateFormat("EEEE d MMMM y HH:mm:ss zzzz",locale,status);
 134                 sdf->setTimeZone(*zone);
 135                 pattern = sdf->toPattern(pattern);
 136                 u_fprintf(out, "%S\n", UnicodeString("Pattern before replacement:").getTerminatedBuffer());
 137         u_fprintf(out, "%S\n", pattern.getTerminatedBuffer());
 138                 dateReturned.remove();
 139                 dateReturned = sdf->format(date, dateReturned, status);
 140                 u_fprintf(out, "%S\n", UnicodeString("Date/Time format in fr_FR:").getTerminatedBuffer());
 141                 u_fprintf(out, "%S\n", dateReturned.getTerminatedBuffer());
 142         // Replace zone "zzzz" in the pattern with "vvvv"
 143                 UnicodeString newPattern = dtfg->replaceFieldTypes(pattern, "vvvv", status);
 144                 // Apply the new pattern
 145                 sdf->applyPattern(newPattern);
 146                 dateReturned.remove();
 147                 dateReturned = sdf->format(date, dateReturned, status);
 148                 u_fprintf(out, "%S\n", UnicodeString("Pattern after replacement:").getTerminatedBuffer());
 149         u_fprintf(out, "%S\n", newPattern.getTerminatedBuffer());
 150         u_fprintf(out, "%S\n", UnicodeString("Date/Time format in fr_FR:").getTerminatedBuffer());
 151                 u_fprintf(out, "%S\n", dateReturned.getTerminatedBuffer());
 152                 delete sdf;
 153                 delete dtfg;
 154                 delete zone;
 155                 delete cal;
 156                 u_fclose(out);
 157         //! [replaceFieldTypesExample]
 158     }
 159
 160 int main (int argc, char* argv[])
 161 {
 162         getBestPatternExample();
 163         addPatternExample();
 164         replaceFieldTypesExample();
 165         return 0;
 166 }