C++ SimpleDateFormat::setTimeZone方法代码示例

 // Constructor that takes the actual patterns for hour-minute,
 // minute-second, and hour-minute-second respectively.
 NumericDateFormatters(
         const UnicodeString &hm,
         const UnicodeString &ms,
         const UnicodeString &hms,
         UErrorCode &status) : 
         hourMinute(hm, status),
         minuteSecond(ms, status), 
         hourMinuteSecond(hms, status) {
     const TimeZone *gmt = TimeZone::getGMT();
     hourMinute.setTimeZone(*gmt);
     minuteSecond.setTimeZone(*gmt);
     hourMinuteSecond.setTimeZone(*gmt);
 }

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, NULL, "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]
		/* output of the sample code:
        *************************************************************************************************
         Pattern before replacement:
         EEEE d MMMM y HH:mm:ss zzzz
         Date/Time format in fr_FR:
         jeudi 14 octobre 1999 05:58:59 heure avancée d’Europe centrale
         Pattern after replacement:
         EEEE d MMMM y HH:mm:ss vvvv
         Date/Time format in fr_FR:
         jeudi 14 octobre 1999 05:58:59 heure de l’Europe centrale

        *************************************************************************************************/
    }

//.........这里部分代码省略.........
    }
    
    if ( *cloneDTPatternGen != *instFromLocale ) {
        errln("ERROR: inconsistency is found in cloned object.");
    }
    
    delete instFromLocale;
    delete cloneDTPatternGen;
    
    // ======= Test simple use cases    
    logln("Testing simple use cases");
    status = U_ZERO_ERROR;
    Locale deLocale=Locale::getGermany();
    UDate sampleDate=LocaleTest::date(99, 9, 13, 23, 58, 59);
    DateTimePatternGenerator *gen = DateTimePatternGenerator::createInstance(deLocale, status);
    if (U_FAILURE(status)) {
        dataerrln("ERROR: Could not create DateTimePatternGenerator (Locale::getGermany()) - exitting");
        return;
    }
    UnicodeString findPattern = gen->getBestPattern(UnicodeString("MMMddHmm"), status);
    SimpleDateFormat *format = new SimpleDateFormat(findPattern, deLocale, status);
    if (U_FAILURE(status)) {
        dataerrln("ERROR: Could not create SimpleDateFormat (Locale::getGermany())");
        delete gen;
        return;
    }
    TimeZone *zone = TimeZone::createTimeZone(UnicodeString("ECT"));
    if (zone==NULL) {
        dataerrln("ERROR: Could not create TimeZone ECT");
        delete gen;
        delete format;
        return;
    }
    format->setTimeZone(*zone);
    UnicodeString dateReturned, expectedResult;
    dateReturned.remove();
    dateReturned = format->format(sampleDate, dateReturned, status);
    expectedResult=UnicodeString("14. Okt 8:58", -1, US_INV);
    if ( dateReturned != expectedResult ) {
        errln("ERROR: Simple test in getBestPattern with Locale::getGermany()).");
    }
    // add new pattern
    status = U_ZERO_ERROR;
    conflictingStatus = gen->addPattern(UnicodeString("d'. von' MMMM", -1, US_INV), true, conflictingPattern, status); 
    if (U_FAILURE(status)) {
        errln("ERROR: Could not addPattern - d\'. von\' MMMM");
    }
    status = U_ZERO_ERROR;
    UnicodeString testPattern=gen->getBestPattern(UnicodeString("MMMMdd"), status);
    testPattern=gen->getBestPattern(UnicodeString("MMMddHmm"), status);
    format->applyPattern(gen->getBestPattern(UnicodeString("MMMMddHmm"), status));
    dateReturned.remove();
    dateReturned = format->format(sampleDate, dateReturned, status);
    expectedResult=UnicodeString("14. von Oktober 8:58", -1, US_INV);
    if ( dateReturned != expectedResult ) {
        errln("ERROR: Simple test addPattern failed!: d\'. von\' MMMM  ");
    }
    delete format;
    
    // get a pattern and modify it
    format = (SimpleDateFormat *)DateFormat::createDateTimeInstance(DateFormat::kFull, DateFormat::kFull, 
                                                                  deLocale);
    format->setTimeZone(*zone);
    UnicodeString pattern;
    pattern = format->toPattern(pattern);
    dateReturned.remove();

/**
 * @bug 4106807
 */
void DateFormatRegressionTest::Test4106807(void) 
{
    UDate dt; 
    DateFormat *df = DateFormat::createDateTimeInstance(); 
    
    UErrorCode status = U_ZERO_ERROR;
    SimpleDateFormat *sdfs [] = {
        new SimpleDateFormat(UnicodeString("yyyyMMddHHmmss"), status),
        new SimpleDateFormat(UnicodeString("yyyyMMddHHmmss'Z'"), status),
        new SimpleDateFormat(UnicodeString("yyyyMMddHHmmss''"), status),
        new SimpleDateFormat(UnicodeString("yyyyMMddHHmmss'a''a'"), status),
        new SimpleDateFormat(UnicodeString("yyyyMMddHHmmss %"), status)
    };
    if(U_FAILURE(status)) {
      dataerrln("Couldn't create SimpleDateFormat, error %s", u_errorName(status));
      delete sdfs[0];
      delete sdfs[1];
      delete sdfs[2];
      delete sdfs[3];
      delete sdfs[4];
      return;
    }

    failure(status, "new SimpleDateFormat");
    
    UnicodeString strings [] = {
        (UnicodeString) "19980211140000",
        (UnicodeString) "19980211140000",
        (UnicodeString) "19980211140000",
        (UnicodeString) "19980211140000a",
        (UnicodeString) "19980211140000 "
    };

    /*Object[] data = {
        new SimpleDateFormat("yyyyMMddHHmmss"),       "19980211140000",
        new SimpleDateFormat("yyyyMMddHHmmss'Z'"),    "19980211140000",
        new SimpleDateFormat("yyyyMMddHHmmss''"),     "19980211140000",
        new SimpleDateFormat("yyyyMMddHHmmss'a''a'"), "19980211140000a",
        new SimpleDateFormat("yyyyMMddHHmmss %"),     "19980211140000 ",
    };*/
    GregorianCalendar *gc = new GregorianCalendar(status);
    failure(status, "new GregorianCalendar");
    TimeZone *timeZone = TimeZone::createDefault(); 

    TimeZone *gmt = timeZone->clone(); 

    gmt->setRawOffset(0); 

    for(int32_t i = 0; i < 5; i++) {
        SimpleDateFormat *format = sdfs[i];
        UnicodeString dateString = strings[i];
        //try {
            format->setTimeZone(*gmt); 
            dt = format->parse(dateString, status);
            // {sfb} some of these parses will fail purposely
            if(U_FAILURE(status))
                break;
            status = U_ZERO_ERROR;
            UnicodeString fmtd;
            FieldPosition pos(FieldPosition::DONT_CARE);
            fmtd = df->format(dt, fmtd, pos);
            logln(fmtd);
            //logln(df->format(dt)); 
            gc->setTime(dt, status); 
            failure(status, "gc->getTime");
            logln(UnicodeString("") + gc->get(UCAL_ZONE_OFFSET, status));
            failure(status, "gc->get");
            UnicodeString s;
            s = format->format(dt, s, pos);
            logln(s); 
        /*}
        catch (ParseException e) { 
            logln("No way Jose"); 
        }*/ 
    } 

    delete timeZone;
    delete df;
    for(int32_t j = 0; j < 5; j++)
        delete sdfs [j];
     delete gc;
    delete gmt;
}

/**
 * @bug 4162593
 * TimeZone broken at midnight.  The TimeZone code fails to handle
 * transitions at midnight correctly.
 */
void 
TimeZoneRegressionTest::Test4162593() 
{
    UErrorCode status = U_ZERO_ERROR;
    SimpleDateFormat *fmt = new SimpleDateFormat("z", Locale::getUS(), status);
    if(U_FAILURE(status)) {
      dataerrln("Error creating calendar %s", u_errorName(status));
      delete fmt;
      return;
    }
    const int32_t ONE_HOUR = 60*60*1000;

    SimpleTimeZone *asuncion = new SimpleTimeZone(-4*ONE_HOUR, "America/Asuncion" /*PY%sT*/,
        UCAL_OCTOBER, 1, 0 /*DOM*/, 0*ONE_HOUR,
        UCAL_MARCH, 1, 0 /*DOM*/, 0*ONE_HOUR, 1*ONE_HOUR, status);

    /* Zone
     * Starting time
     * Transition expected between start+1H and start+2H
     */
    TimeZone *DATA_TZ [] = {
      0, 0, 0 };

    int32_t DATA_INT [] [5] = {
        // These years must be AFTER the Gregorian cutover
        {1998, UCAL_SEPTEMBER, 30, 22, 0},
        {2000, UCAL_FEBRUARY, 28, 22, 0},
        {2000, UCAL_FEBRUARY, 29, 22, 0},
     };

    UBool DATA_BOOL [] = {
        TRUE,
        FALSE,
        TRUE,
    };
    
    UnicodeString zone [4];// = new String[4];
    DATA_TZ[0] =  
        new SimpleTimeZone(2*ONE_HOUR, "Asia/Damascus" /*EE%sT*/,
            UCAL_APRIL, 1, 0 /*DOM*/, 0*ONE_HOUR,
            UCAL_OCTOBER, 1, 0 /*DOM*/, 0*ONE_HOUR, 1*ONE_HOUR, status);
    DATA_TZ[1] = asuncion;  DATA_TZ[2] = asuncion;  

    for(int32_t j = 0; j < 3; j++) {
        TimeZone *tz = (TimeZone*)DATA_TZ[j];
        TimeZone::setDefault(*tz);
        fmt->setTimeZone(*tz);

        // Must construct the Date object AFTER setting the default zone
        int32_t *p = (int32_t*)DATA_INT[j];
        UDate d = CalendarRegressionTest::makeDate(p[0], p[1], p[2], p[3], p[4]);
       UBool transitionExpected = DATA_BOOL[j];

        UnicodeString temp;
        logln(tz->getID(temp) + ":");
        for (int32_t i = 0; i < 4; ++i) {
            FieldPosition pos(0);
            zone[i].remove();
            zone[i] = fmt->format(d+ i*ONE_HOUR, zone[i], pos);
            logln(UnicodeString("") + i + ": " + d + " / " + zone[i]);
            //d += (double) ONE_HOUR;
        }
        if(zone[0] == zone[1] &&
            (zone[1] == zone[2]) != transitionExpected &&
            zone[2] == zone[3]) {
            logln(UnicodeString("Ok: transition ") + transitionExpected);
        } 
        else {
            errln("Fail: boundary transition incorrect");
        }
    }
    delete fmt;
    delete asuncion;
    delete DATA_TZ[0];
}