Edit File: dtptngsample.cpp
// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /******************************************************************** * COPYRIGHT: * Copyright (c) 2008-2014, International Business Machines Corporation and * others. All Rights Reserved. ********************************************************************/ //! [getBestPatternExample1] #include <iostream> #include "unicode/smpdtfmt.h" #include "unicode/dtptngen.h" #include "unicode/ustdio.h" //! [getBestPatternExample1] using namespace std; using namespace icu; static void getBestPatternExample() { u_printf("========================================================================\n"); u_printf(" getBestPatternExample()\n"); u_printf("\n"); u_printf(" Use DateTimePatternGenerator to create customized date/time pattern:\n"); u_printf(" yQQQQ,yMMMM, MMMMd, hhmm, jjmm per locale\n"); u_printf("========================================================================\n"); //! [getBestPatternExample] UnicodeString skeletons [] = { UnicodeString("yQQQQ"), // year + full name of quarter, i.e., 4th quarter 1999 UnicodeString("yMMMM"), // year + full name of month, i.e., October 1999 UnicodeString("MMMMd"), // full name of month + day of the month, i.e., October 25 UnicodeString("hhmm"), // 12-hour-cycle format, i.e., 1:32 PM UnicodeString("jjmm"), // preferred hour format for the given locale, i.e., 24-hour-cycle format for fr_FR 0, }; Locale locales[] = { Locale ("en_US"), Locale ("fr_FR"), Locale ("zh_CN"), }; const char* filename = "sample.txt"; /* open a UTF-8 file for writing */ UFILE* f = u_fopen(filename, "w", nullptr,"UTF-8"); UnicodeString dateReturned; UErrorCode status =U_ZERO_ERROR; Calendar *cal = Calendar::createInstance(status); cal->set (1999,9,13,23,58,59); UDate date = cal->getTime(status); u_fprintf(f, "%-20S%-20S%-20S%-20S\n", UnicodeString("Skeleton").getTerminatedBuffer(),UnicodeString("en_US").getTerminatedBuffer(),UnicodeString("fr_FR").getTerminatedBuffer(),UnicodeString("zh_CN").getTerminatedBuffer()); for (int i=0;!skeletons[i].isEmpty();i++) { u_fprintf(f, "%-20S",skeletons[i].getTerminatedBuffer()); for (int j=0;j<sizeof(locales)/sizeof(locales[0]);j++) { // create a DateTimePatternGenerator instance for given locale DateTimePatternGenerator *dtfg= DateTimePatternGenerator::createInstance(locales[j],status); // use getBestPattern method to get the best pattern for the given skeleton UnicodeString pattern = dtfg->getBestPattern(skeletons[i],status); // Constructs a SimpleDateFormat with the best pattern generated above and the given locale SimpleDateFormat *sdf = new SimpleDateFormat(pattern,locales[j],status); dateReturned.remove(); // Get the format of the given date sdf->format(date,dateReturned,status); /* write Unicode string to file */ u_fprintf(f, "%-20S", dateReturned.getTerminatedBuffer()); delete dtfg; delete sdf; } u_fprintf(f,"\n"); } /* close the file resource */ u_fclose(f); delete cal; //! [getBestPatternExample] } static void addPatternExample() { u_printf("========================================================================\n"); u_printf(" addPatternExample()\n"); u_printf("\n"); u_printf(" Use addPattern API to add new '. von' to existing pattern\n"); u_printf("========================================================================\n"); //! [addPatternExample] UErrorCode status =U_ZERO_ERROR; UnicodeString conflictingPattern,dateReturned, pattern; Locale locale=Locale::getFrance(); Calendar *cal = Calendar::createInstance(status); cal->set (1999,9,13,23,58,59); UDate date = cal->getTime(status); // Create an DateTimePatternGenerator instance for the given locale DateTimePatternGenerator *dtfg= DateTimePatternGenerator::createInstance(locale,status); SimpleDateFormat *sdf = new SimpleDateFormat(dtfg->getBestPattern("MMMMddHmm",status),locale,status); // Add '. von' to the existing pattern dtfg->addPattern("dd'. von' MMMM", true, conflictingPattern,status); // Apply the new pattern sdf->applyPattern(dtfg->getBestPattern("MMMMddHmm",status)); dateReturned = sdf->format(date, dateReturned, status); pattern =sdf->toPattern(pattern); u_printf("%s\n", "New Pattern for FRENCH: "); u_printf("%S\n", pattern.getTerminatedBuffer()); u_printf("%s\n", "Date Time in new Pattern: "); u_printf("%S\n", dateReturned.getTerminatedBuffer()); delete dtfg; delete sdf; delete cal; //! [addPatternExample] /* output of the sample code: ************************************************************************************************ New Pattern for FRENCH: dd. 'von' MMMM HH:mm Date Time in new Pattern: 13. von octobre 23:58 *************************************************************************************************/ } static void replaceFieldTypesExample() { // Use repalceFieldTypes API to replace zone 'zzzz' with 'vvvv' u_printf("========================================================================\n"); u_printf(" replaceFieldTypeExample()\n"); u_printf("\n"); u_printf(" Use replaceFieldTypes API to replace zone 'zzzz' with 'vvvv'\n"); u_printf("========================================================================\n"); //! [replaceFieldTypesExample] UFILE *out = u_finit(stdout, nullptr, "UTF-8"); UErrorCode status =U_ZERO_ERROR; UnicodeString pattern,dateReturned; Locale locale =Locale::getFrance(); Calendar *cal = Calendar::createInstance(status); cal->set (1999,9,13,23,58,59); UDate date = cal->getTime(status); TimeZone *zone = TimeZone::createTimeZone(UnicodeString("Europe/Paris")); DateTimePatternGenerator *dtfg = DateTimePatternGenerator::createInstance(locale,status); SimpleDateFormat *sdf = new SimpleDateFormat("EEEE d MMMM y HH:mm:ss zzzz",locale,status); sdf->setTimeZone(*zone); pattern = sdf->toPattern(pattern); u_fprintf(out, "%S\n", UnicodeString("Pattern before replacement:").getTerminatedBuffer()); u_fprintf(out, "%S\n", pattern.getTerminatedBuffer()); dateReturned.remove(); dateReturned = sdf->format(date, dateReturned, status); u_fprintf(out, "%S\n", UnicodeString("Date/Time format in fr_FR:").getTerminatedBuffer()); u_fprintf(out, "%S\n", dateReturned.getTerminatedBuffer()); // Replace zone "zzzz" in the pattern with "vvvv" UnicodeString newPattern = dtfg->replaceFieldTypes(pattern, "vvvv", status); // Apply the new pattern sdf->applyPattern(newPattern); dateReturned.remove(); dateReturned = sdf->format(date, dateReturned, status); u_fprintf(out, "%S\n", UnicodeString("Pattern after replacement:").getTerminatedBuffer()); u_fprintf(out, "%S\n", newPattern.getTerminatedBuffer()); u_fprintf(out, "%S\n", UnicodeString("Date/Time format in fr_FR:").getTerminatedBuffer()); u_fprintf(out, "%S\n", dateReturned.getTerminatedBuffer()); delete sdf; delete dtfg; delete zone; delete cal; u_fclose(out); //! [replaceFieldTypesExample] } int main (int argc, char* argv[]) { getBestPatternExample(); addPatternExample(); replaceFieldTypesExample(); return 0; }
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