C++ DateFormat::format方法代码示例

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)) {
      errcheckln(status, "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;
}

void DateFormatRegressionTest::Test4052408(void) 
{

    DateFormat *fmt = DateFormat::createDateTimeInstance(DateFormat::SHORT,
                                                DateFormat::SHORT, Locale::getUS());
    if (fmt == NULL) {
        dataerrln("Error calling DateFormat::createDateTimeInstance");
        return;
    }

    UDate dt = date(97, UCAL_MAY, 3, 8, 55);
    UnicodeString str;
    str = fmt->format(dt, str);
    logln(str);
    
    if(str != "5/3/97 8:55 AM")
        errln("Fail: Test broken; Want 5/3/97 8:55 AM Got " + str);   
    
    UnicodeString expected[] = {
        (UnicodeString) "", //"ERA_FIELD",
        (UnicodeString) "97", //"YEAR_FIELD",
        (UnicodeString) "5", //"MONTH_FIELD",
        (UnicodeString) "3", //"DATE_FIELD",
        (UnicodeString) "", //"HOUR_OF_DAY1_FIELD",
        (UnicodeString) "", //"HOUR_OF_DAY0_FIELD",
        (UnicodeString) "55", //"MINUTE_FIELD",
        (UnicodeString) "", //"SECOND_FIELD",
        (UnicodeString) "", //"MILLISECOND_FIELD",
        (UnicodeString) "", //"DAY_OF_WEEK_FIELD",
        (UnicodeString) "", //"DAY_OF_YEAR_FIELD",
        (UnicodeString) "", //"DAY_OF_WEEK_IN_MONTH_FIELD",
        (UnicodeString) "", //"WEEK_OF_YEAR_FIELD",
        (UnicodeString) "", //"WEEK_OF_MONTH_FIELD",
        (UnicodeString) "AM", //"AM_PM_FIELD",
        (UnicodeString) "8", //"HOUR1_FIELD",
        (UnicodeString) "", //"HOUR0_FIELD",
        (UnicodeString) "" //"TIMEZONE_FIELD"
    };
    
    //Hashtable expected;// = new Hashtable();
    //expected.put(new LongKey(DateFormat.MONTH_FIELD), "5");
    //expected.put(new LongKey(DateFormat.DATE_FIELD), "3");
    //expected.put(new LongKey(DateFormat.YEAR_FIELD), "97");
    //expected.put(new LongKey(DateFormat.HOUR1_FIELD), "8");
    //expected.put(new LongKey(DateFormat.MINUTE_FIELD), "55");
    //expected.put(new LongKey(DateFormat.AM_PM_FIELD), "AM");
    
    //StringBuffer buf = new StringBuffer();
    UnicodeString fieldNames[] = {
        (UnicodeString) "ERA_FIELD",
        (UnicodeString) "YEAR_FIELD",
        (UnicodeString) "MONTH_FIELD",
        (UnicodeString) "DATE_FIELD",
        (UnicodeString) "HOUR_OF_DAY1_FIELD",
        (UnicodeString) "HOUR_OF_DAY0_FIELD",
        (UnicodeString) "MINUTE_FIELD",
        (UnicodeString) "SECOND_FIELD",
        (UnicodeString) "MILLISECOND_FIELD",
        (UnicodeString) "DAY_OF_WEEK_FIELD",
        (UnicodeString) "DAY_OF_YEAR_FIELD",
        (UnicodeString) "DAY_OF_WEEK_IN_MONTH_FIELD",
        (UnicodeString) "WEEK_OF_YEAR_FIELD",
        (UnicodeString) "WEEK_OF_MONTH_FIELD",
        (UnicodeString) "AM_PM_FIELD",
        (UnicodeString) "HOUR1_FIELD",
        (UnicodeString) "HOUR0_FIELD",
        (UnicodeString) "TIMEZONE_FIELD"
    };

    UBool pass = TRUE;
    for(int i = 0; i <= 17; ++i) {
        FieldPosition pos(i);
        UnicodeString buf;
        fmt->format(dt, buf, pos);
        //char[] dst = new char[pos.getEndIndex() - pos.getBeginIndex()];
        UnicodeString dst;
        buf.extractBetween(pos.getBeginIndex(), pos.getEndIndex(), dst);
        UnicodeString str(dst);
        logln((UnicodeString)"" + i + (UnicodeString)": " + fieldNames[i] +
                (UnicodeString)", \"" + str + (UnicodeString)"\", " +
                pos.getBeginIndex() + (UnicodeString)", " +
                pos.getEndIndex());
        UnicodeString exp = expected[i];
        if((exp.length() == 0 && str.length() == 0) || str == exp)
            logln(" ok");
        else {
            errln(UnicodeString(" expected ") + exp);
            pass = FALSE;
        }
        
    }
    if( ! pass) 
        errln("Fail: FieldPosition not set right by DateFormat");
    
    delete fmt;
}

String IndicationFormatter::_localizeDateTime(
    const CIMDateTime & propertyValueDateTime,
    const Locale & locale)
{

    PEG_METHOD_ENTER (TRC_IND_FORMATTER,
	"IndicationFormatter::_localizeDateTime");

    // Convert dateTimeValue to be microSeconds,
    // the number of microseconds from the epoch starting
    // 0/0/0000 (12 am Jan 1, 1BCE)
    //

    CIMDateTime dateTimeValue = propertyValueDateTime;
    Uint64 dateTimeValueInMicroSecs =
        dateTimeValue.toMicroSeconds();

    // In ICU, as UTC milliseconds from the epoch starting
    // (1 January 1970 0:00 UTC)
    CIMDateTime dt;
    dt.set("19700101000000.000000+000");

    // Convert dateTimeValue to be milliSeconds,
    // the number of milliSeconds from the epoch starting
    // (1 January 1970 0:00 UTC)
    UDate dateTimeValueInMilliSecs =
       (Sint64)(dateTimeValueInMicroSecs - dt.toMicroSeconds())/1000;

    // Create a formatter for DATE and TIME with medium length
    // such as Jan 12, 1952 3:30:32pm
    DateFormat *fmt;

    try
    {
        if (locale == 0)
        {
            fmt = DateFormat::createDateTimeInstance(DateFormat::MEDIUM,
                                                     DateFormat::MEDIUM);
        }
        else
        {
            fmt = DateFormat::createDateTimeInstance(DateFormat::MEDIUM,
                                                     DateFormat::MEDIUM,
                                                     locale);
        }
    }
    catch(Exception& e)
    {
        PEG_TRACE_STRING(TRC_IND_FORMATTER, Tracer::LEVEL4, e.getMessage());
        PEG_METHOD_EXIT();
        return (dateTimeValue.toString());
    }
    catch(...)
    {
        PEG_TRACE_STRING(TRC_IND_FORMATTER, Tracer::LEVEL4,
        "Caught General Exception During DateFormat::createDateTimeInstance");

        PEG_METHOD_EXIT();
        return (dateTimeValue.toString());
    }

    if (fmt == 0)
    {
        PEG_TRACE_STRING(TRC_IND_FORMATTER, Tracer::LEVEL4,
            "Memory allocation error creating DateTime instance.");
        PEG_METHOD_EXIT();
        return (dateTimeValue.toString());
    }

    // Format the Date and Time
    UErrorCode status = U_ZERO_ERROR;
    UnicodeString dateTimeUniStr;
    fmt->format(dateTimeValueInMilliSecs, dateTimeUniStr, status);

    if (U_FAILURE(status))
    {
        delete fmt;
        PEG_METHOD_EXIT();
        return (dateTimeValue.toString());
    }

    // convert UnicodeString to char *
    char dateTimeBuffer[256];
    char *extractedStr = 0;

    // Copy the contents of the string into dateTimeBuffer
    Uint32 strLen = dateTimeUniStr.extract(0, sizeof(dateTimeBuffer),
					   dateTimeBuffer);

    // There is not enough space in dateTimeBuffer
    if (strLen > sizeof(dateTimeBuffer))
    {
	extractedStr = new char[strLen + 1];
	strLen = dateTimeUniStr.extract(0, strLen + 1, extractedStr);
    }
    else
    {
	extractedStr = dateTimeBuffer;
    }

//.........这里部分代码省略.........

void Win32DateTimeTest::testLocales(TestLog *log)
{
    SYSTEMTIME winNow;
    UDate icuNow = 0;
    SYSTEMTIME st;
    FILETIME ft;
    UnicodeString zoneID;
    const TimeZone *tz = TimeZone::createDefault();
    TIME_ZONE_INFORMATION tzi;

    tz->getID(zoneID);
    if (! uprv_getWindowsTimeZoneInfo(&tzi, zoneID.getBuffer(), zoneID.length())) {
        UBool found = FALSE;
        int32_t ec = TimeZone::countEquivalentIDs(zoneID);

        for (int z = 0; z < ec; z += 1) {
            UnicodeString equiv = TimeZone::getEquivalentID(zoneID, z);

            if (found = uprv_getWindowsTimeZoneInfo(&tzi, equiv.getBuffer(), equiv.length())) {
                break;
            }
        }

        if (! found) {
            GetTimeZoneInformation(&tzi);
        }
    }

    GetSystemTime(&st);
    SystemTimeToFileTime(&st, &ft);
    SystemTimeToTzSpecificLocalTime(&tzi, &st, &winNow);

    int64_t wftNow = ((int64_t) ft.dwHighDateTime << 32) + ft.dwLowDateTime;
    UErrorCode status = U_ZERO_ERROR;

    int64_t udtsNow = utmscale_fromInt64(wftNow, UDTS_WINDOWS_FILE_TIME, &status);

    icuNow = (UDate) utmscale_toInt64(udtsNow, UDTS_ICU4C_TIME, &status);

    int32_t lcidCount = 0;
    Win32Utilities::LCIDRecord *lcidRecords = Win32Utilities::getLocales(lcidCount);

    for(int i = 0; i < lcidCount; i += 1) {
        UErrorCode status = U_ZERO_ERROR;
        WCHAR longDateFormat[81], longTimeFormat[81], wdBuffer[256], wtBuffer[256];
        int32_t calType = 0;

        // NULL localeID means ICU didn't recognize this locale
        if (lcidRecords[i].localeID == NULL) {
            continue;
        }

        GetLocaleInfoW(lcidRecords[i].lcid, LOCALE_SLONGDATE,   longDateFormat, 81);
        GetLocaleInfoW(lcidRecords[i].lcid, LOCALE_STIMEFORMAT, longTimeFormat, 81);
        GetLocaleInfoW(lcidRecords[i].lcid, LOCALE_RETURN_NUMBER|LOCALE_ICALENDARTYPE, (LPWSTR) calType, sizeof(int32_t));

        char localeID[64];

        uprv_strcpy(localeID, lcidRecords[i].localeID);
        uprv_strcat(localeID, getCalendarType(calType));

        UnicodeString ubBuffer, udBuffer, utBuffer;
        Locale ulocale(localeID);
        int32_t wdLength, wtLength;

        wdLength = GetDateFormatW(lcidRecords[i].lcid, DATE_LONGDATE, &winNow, NULL, wdBuffer, UPRV_LENGTHOF(wdBuffer));
        wtLength = GetTimeFormatW(lcidRecords[i].lcid, 0, &winNow, NULL, wtBuffer, UPRV_LENGTHOF(wtBuffer));

        if (uprv_strchr(localeID, '@') > 0) {
            uprv_strcat(localeID, ";");
        } else {
            uprv_strcat(localeID, "@");
        }

        uprv_strcat(localeID, "compat=host");

        Locale wlocale(localeID);
        DateFormat *wbf = DateFormat::createDateTimeInstance(DateFormat::kFull, DateFormat::kFull, wlocale);
        DateFormat *wdf = DateFormat::createDateInstance(DateFormat::kFull, wlocale);
        DateFormat *wtf = DateFormat::createTimeInstance(DateFormat::kFull, wlocale);

        wbf->format(icuNow, ubBuffer);
        wdf->format(icuNow, udBuffer);
        wtf->format(icuNow, utBuffer);

        if (ubBuffer.indexOf(wdBuffer, wdLength - 1, 0) < 0) {
            UnicodeString baseName(wlocale.getBaseName());
            UnicodeString expected(wdBuffer);

            log->errln("DateTime format error for locale " + baseName + ": expected date \"" + expected +
                       "\" got \"" + ubBuffer + "\"");
        }

        if (ubBuffer.indexOf(wtBuffer, wtLength - 1, 0) < 0) {
            UnicodeString baseName(wlocale.getBaseName());
            UnicodeString expected(wtBuffer);

            log->errln("DateTime format error for locale " + baseName + ": expected time \"" + expected +
                       "\" got \"" + ubBuffer + "\"");
        }
//.........这里部分代码省略.........

int main(int argc, char **argv) {

    Calendar *cal;
    DateFormat *fmt;
    DateFormat *defFmt;
    Transliterator *greek_latin;
    Transliterator *rbtUnaccent;
    Transliterator *unaccent;
    UParseError pError;
    UErrorCode status = U_ZERO_ERROR;
    Locale greece("el", "GR");
    UnicodeString str, str2;

    // Create a calendar in the Greek locale
    cal = Calendar::createInstance(greece, status);
    check(status, "Calendar::createInstance");

    // Create a formatter
    fmt = DateFormat::createDateInstance(DateFormat::kFull, greece);
    fmt->setCalendar(*cal);

    // Create a default formatter
    defFmt = DateFormat::createDateInstance(DateFormat::kFull);
    defFmt->setCalendar(*cal);

    // Create a Greek-Latin Transliterator
    greek_latin = Transliterator::createInstance("Greek-Latin", UTRANS_FORWARD, status);
    if (greek_latin == 0) {
        printf("ERROR: Transliterator::createInstance() failed\n");
        exit(1);
    }

    // Create a custom Transliterator
    rbtUnaccent = Transliterator::createFromRules("RBTUnaccent",
                                                  UNACCENT_RULES,
                                                  UTRANS_FORWARD,
                                                  pError,
                                                  status);
    check(status, "Transliterator::createFromRules");

    // Create a custom Transliterator
    unaccent = new UnaccentTransliterator();

    // Loop over various months
    for (int32_t month = Calendar::JANUARY;
         month <= Calendar::DECEMBER;
         ++month) {

        // Set the calendar to a date
        cal->clear();
        cal->set(1999, month, 4);
        
        // Format the date in default locale
        str.remove();
        defFmt->format(cal->getTime(status), str, status);
        check(status, "DateFormat::format");
        printf("Date: ");
        uprintf(escape(str));
        printf("\n");
        
        // Format the date for Greece
        str.remove();
        fmt->format(cal->getTime(status), str, status);
        check(status, "DateFormat::format");
        printf("Greek formatted date: ");
        uprintf(escape(str));
        printf("\n");
        
        // Transliterate result
        greek_latin->transliterate(str);
        printf("Transliterated via Greek-Latin: ");
        uprintf(escape(str));
        printf("\n");
        
        // Transliterate result
        str2 = str;
        rbtUnaccent->transliterate(str);
        printf("Transliterated via RBT unaccent: ");
        uprintf(escape(str));
        printf("\n");

        unaccent->transliterate(str2);
        printf("Transliterated via normalizer unaccent: ");
        uprintf(escape(str2));
        printf("\n\n");
    }

    // Clean up
    delete fmt;
    delete cal;
    delete greek_latin;
    delete unaccent;
    delete rbtUnaccent;

    printf("Exiting successfully\n");
    return 0;
}

/**
 * Format date-time objects
 *
 * @param time
 * @param format
 * @param tz
 * @param locale
 *
 * @return character vector
 *
 * @version 0.5-1 (Marek Gagolewski, 2015-01-05)
 *
 * @version 0.5-1 (Marek Gagolewski, 2015-02-22)
 *    use tz
 */
SEXP stri_datetime_format(SEXP time, SEXP format, SEXP tz, SEXP locale) {
   PROTECT(time = stri_prepare_arg_POSIXct(time, "time"));
   const char* locale_val = stri__prepare_arg_locale(locale, "locale", true);
   const char* format_val = stri__prepare_arg_string_1_notNA(format, "format");

   // "format" may be one of:
   const char* format_opts[] = {
      "date_full", "date_long", "date_medium", "date_short",
      "date_relative_full", "date_relative_long", "date_relative_medium", "date_relative_short",
      "time_full", "time_long", "time_medium", "time_short",
      "time_relative_full", "time_relative_long", "time_relative_medium", "time_relative_short",
      "datetime_full", "datetime_long", "datetime_medium", "datetime_short",
      "datetime_relative_full", "datetime_relative_long", "datetime_relative_medium", "datetime_relative_short",
      NULL};
   int format_cur = stri__match_arg(format_val, format_opts);

   TimeZone* tz_val = stri__prepare_arg_timezone(tz, "tz", true/*allowdefault*/);
   Calendar* cal = NULL;
   DateFormat* fmt = NULL;
   STRI__ERROR_HANDLER_BEGIN(1)
   R_len_t vectorize_length = LENGTH(time);
   StriContainerDouble time_cont(time, vectorize_length);
   UnicodeString format_str(format_val);

   UErrorCode status = U_ZERO_ERROR;
   if (format_cur >= 0) {
      DateFormat::EStyle style = DateFormat::kNone;
      switch (format_cur % 8) {
         case 0:  style = DateFormat::kFull; break;
         case 1:  style = DateFormat::kLong; break;
         case 2:  style = DateFormat::kMedium; break;
         case 3:  style = DateFormat::kShort; break;
         case 4:  style = DateFormat::kFullRelative; break;
         case 5:  style = DateFormat::kLongRelative; break;
         case 6:  style = DateFormat::kMediumRelative; break;
         case 7:  style = DateFormat::kShortRelative; break;
         default: style = DateFormat::kNone; break;
      }

      /* ICU 54.1: Relative time styles are not currently supported.  */
      switch (format_cur / 8) {
         case 0:
            fmt = DateFormat::createDateInstance(style,
               Locale::createFromName(locale_val));
            break;

         case 1:
            fmt = DateFormat::createTimeInstance(
               (DateFormat::EStyle)(style & ~DateFormat::kRelative),
               Locale::createFromName(locale_val));
            break;

         case 2:
            fmt = DateFormat::createDateTimeInstance(style,
               (DateFormat::EStyle)(style & ~DateFormat::kRelative),
               Locale::createFromName(locale_val));
            break;

         default:
            fmt = NULL;
            break;

      }
   }
   else
      fmt = new SimpleDateFormat(format_str, Locale::createFromName(locale_val), status);
   STRI__CHECKICUSTATUS_THROW(status, {/* do nothing special on err */})

   status = U_ZERO_ERROR;
   cal = Calendar::createInstance(locale_val, status);
   STRI__CHECKICUSTATUS_THROW(status, {/* do nothing special on err */})

   cal->adoptTimeZone(tz_val);
   tz_val = NULL; /* The Calendar takes ownership of the TimeZone. */

   SEXP ret;
   STRI__PROTECT(ret = Rf_allocVector(STRSXP, vectorize_length));
   for (R_len_t i=0; i<vectorize_length; ++i) {
      if (time_cont.isNA(i)) {
         SET_STRING_ELT(ret, i, NA_STRING);
         continue;
      }

      status = U_ZERO_ERROR;
      cal->setTime((UDate)(time_cont.get(i)*1000.0), status);
//.........这里部分代码省略.........