C++ NumberFormat::format方法代码示例

StandardPlural::Form QuantityFormatter::selectPlural(
            const Formattable &number,
            const NumberFormat &fmt,
            const PluralRules &rules,
            UnicodeString &formattedNumber,
            FieldPosition &pos,
            UErrorCode &status) {
    if (U_FAILURE(status)) {
        return StandardPlural::OTHER;
    }
    UnicodeString pluralKeyword;
    const DecimalFormat *decFmt = dynamic_cast<const DecimalFormat *>(&fmt);
    if (decFmt != NULL) {
        number::impl::DecimalQuantity dq;
        decFmt->formatToDecimalQuantity(number, dq, status);
        if (U_FAILURE(status)) {
            return StandardPlural::OTHER;
        }
        pluralKeyword = rules.select(dq);
        decFmt->format(number, formattedNumber, pos, status);
    } else {
        if (number.getType() == Formattable::kDouble) {
            pluralKeyword = rules.select(number.getDouble());
        } else if (number.getType() == Formattable::kLong) {
            pluralKeyword = rules.select(number.getLong());
        } else if (number.getType() == Formattable::kInt64) {
            pluralKeyword = rules.select((double) number.getInt64());
        } else {
            status = U_ILLEGAL_ARGUMENT_ERROR;
            return StandardPlural::OTHER;
        }
        fmt.format(number, formattedNumber, pos, status);
    }
    return StandardPlural::orOtherFromString(pluralKeyword);
}

std::string L10n::FormatDecimalNumberIntoString(double number) const
{
	UErrorCode success = U_ZERO_ERROR;
	UnicodeString utf16Number;
	NumberFormat* numberFormatter = NumberFormat::createInstance(currentLocale, UNUM_DECIMAL, success);
	numberFormatter->format(number, utf16Number);
	char utf8Number[512];
	CheckedArrayByteSink sink(utf8Number, ARRAY_SIZE(utf8Number));
	utf16Number.toUTF8(sink);
	ENSURE(!sink.Overflowed());

	return std::string(utf8Number, sink.NumberOfBytesWritten());
}

QString
NumberValcon::format()
{
    // Format decimal using ICU default numeric format
    UnicodeString text;
    UErrorCode status = U_ZERO_ERROR;
    NumberFormat* fmt = NumberFormat::createInstance(status);
    fmt->format(_value.toDouble(), text, status);
    if (U_FAILURE(status))
	return "";

    return convertToQt(text);
}

QString
PercentValcon::format()
{
    // Format money using ICU default percent format
    UnicodeString text;
    UErrorCode status = U_ZERO_ERROR;
    NumberFormat* fmt = NumberFormat::createPercentInstance(status);
    fmt->setMaximumFractionDigits(4);
    fmt->format(_value.toDouble() / 100.0, text, status);
    if (U_FAILURE(status))
	return "";

    return convertToQt(text);
}

static void
showCurrencyFormatting(UBool useICU26API) {
    NumberFormat *nf;
    int32_t i, j;

    UnicodeString output;

    UErrorCode errorCode;

    // TODO: Using printf() here assumes that the runtime encoding is ASCII-friendly
    // and can therefore be mixed with UTF-8

    for(i=0; i<UPRV_LENGTHOF(sampleLocaleIDs); ++i) {
        printf("show currency formatting (method for %s) in the locale \"%s\"\n",
                useICU26API ? "ICU 2.6" : "before ICU 2.6",
                sampleLocaleIDs[i]);

        // get a currency formatter for this locale ID
        errorCode=U_ZERO_ERROR;
        nf=NumberFormat::createCurrencyInstance(sampleLocaleIDs[i], errorCode);
        if(U_FAILURE(errorCode)) {
            printf("NumberFormat::createCurrencyInstance(%s) failed - %s\n",
                    sampleLocaleIDs[i], u_errorName(errorCode));
            continue;
        }

        for(j=0; j<UPRV_LENGTHOF(sampleCurrencies); ++j) {
            printf("  - format currency \"%s\": ", sampleCurrencies[j]);

            // set the actual currency to be formatted
            if(useICU26API) {
                setNumberFormatCurrency_2_6(*nf, sampleCurrencies[j], errorCode);
            } else {
                setNumberFormatCurrency_2_4(*nf, sampleCurrencies[j], errorCode);
            }
            if(U_FAILURE(errorCode)) {
                printf("setNumberFormatCurrency(%s) failed - %s\n",
                        sampleCurrencies[j], u_errorName(errorCode));
                continue;
            }

            // output=formatted currency value
            output.remove();
            nf->format(12345678.93, output);
            output+=(UChar)0x0a; // '\n'
            uprintf(output);
        }
    }
}

void
BCountry::FormatNumber(BString* string, int32 value)
{
    UErrorCode err;
    NumberFormat* numberFormatter
        = NumberFormat::createInstance(*fICULocale, err);

    assert(err == U_ZERO_ERROR);

    UnicodeString ICUString;
    ICUString = numberFormatter->format((int32_t)value, ICUString);

    string->Truncate(0);
    BStringByteSink stringConverter(string);

    ICUString.toUTF8(stringConverter);
}

/**
 * Sample code for the C++ API to NumberFormat.
 */
void cppapi() {
    Locale us("en", "US");
    UErrorCode status = U_ZERO_ERROR;
    
    // Create a number formatter for the US locale
    NumberFormat *fmt = NumberFormat::createInstance(us, status);
    check(status, "NumberFormat::createInstance");

    // Parse a string.  The string uses the digits '0' through '9'
    // and the decimal separator '.', standard in the US locale
    UnicodeString str("9876543210.123");
    Formattable result;
    fmt->parse(str, result, status);
    check(status, "NumberFormat::parse");

    printf("NumberFormat::parse(\""); // Display the result
    uprintf(str);
    printf("\") => ");
    uprintf(formattableToString(result));
    printf("\n");

    // Take the number parsed above, and use the formatter to
    // format it.
    str.remove(); // format() will APPEND to this string
    fmt->format(result, str, status);
    check(status, "NumberFormat::format");

    printf("NumberFormat::format("); // Display the result
    uprintf(formattableToString(result));
    printf(") => \"");
    uprintf(str);
    printf("\"\n");

    delete fmt; // Release the storage used by the formatter
    
}

/**
 * Test hiding of parse() and format() APIs in the Format hierarchy.
 * We test the entire hierarchy, even though this test is located in
 * the DateFormat API test.
 */
void
IntlTestDateFormatAPI::TestNameHiding(void) {

    // N.B.: This test passes if it COMPILES, since it's a test of
    // compile-time name hiding.

    UErrorCode status = U_ZERO_ERROR;
    Formattable dateObj(0, Formattable::kIsDate);
    Formattable numObj(3.1415926535897932384626433832795);
    Formattable obj;
    UnicodeString str;
    FieldPosition fpos;
    ParsePosition ppos;

    // DateFormat calling Format API
    {
        logln("DateFormat");
        DateFormat *dateFmt = DateFormat::createInstance();
        if (dateFmt) {
            dateFmt->format(dateObj, str, status);
            dateFmt->format(dateObj, str, fpos, status);
            delete dateFmt;
        } else {
            errln("FAIL: Can't create DateFormat");
        }
    }

    // SimpleDateFormat calling Format & DateFormat API
    {
        logln("SimpleDateFormat");
        status = U_ZERO_ERROR;
        SimpleDateFormat sdf(status);
        // Format API
        sdf.format(dateObj, str, status);
        sdf.format(dateObj, str, fpos, status);
        // DateFormat API
        sdf.format((UDate)0, str, fpos);
        sdf.format((UDate)0, str);
        sdf.parse(str, status);
        sdf.parse(str, ppos);
    }

    // NumberFormat calling Format API
    {
        logln("NumberFormat");
        status = U_ZERO_ERROR;
        NumberFormat *fmt = NumberFormat::createInstance(status);
        if (fmt) {
            fmt->format(numObj, str, status);
            fmt->format(numObj, str, fpos, status);
            delete fmt;
        } else {
            errln("FAIL: Can't create NumberFormat()");
        }
    }

    // DecimalFormat calling Format & NumberFormat API
    {
        logln("DecimalFormat");
        status = U_ZERO_ERROR;
        DecimalFormat fmt(status);
        if(U_SUCCESS(status)) {
          // Format API
          fmt.format(numObj, str, status);
          fmt.format(numObj, str, fpos, status);
          // NumberFormat API
          fmt.format(2.71828, str);
          fmt.format((int32_t)1234567, str);
          fmt.format(1.41421, str, fpos);
          fmt.format((int32_t)9876543, str, fpos);
          fmt.parse(str, obj, ppos);
          fmt.parse(str, obj, status);
        } else {
          errln("FAIL: Couldn't instantiate DecimalFormat, error %s. Quitting test", u_errorName(status));
        }
    }

    // ChoiceFormat calling Format & NumberFormat API
    {
        logln("ChoiceFormat");
        status = U_ZERO_ERROR;
        ChoiceFormat fmt("0#foo|1#foos|2#foos", status);
        // Format API
        fmt.format(numObj, str, status);
        fmt.format(numObj, str, fpos, status);
        // NumberFormat API
        fmt.format(2.71828, str);
        fmt.format((int32_t)1234567, str);
        fmt.format(1.41421, str, fpos);
        fmt.format((int32_t)9876543, str, fpos);
        fmt.parse(str, obj, ppos);
        fmt.parse(str, obj, status);
    }

    // MessageFormat calling Format API
//.........这里部分代码省略.........

void MessageFormatRegressionTest::Test4031438() 
{
    UErrorCode status = U_ZERO_ERROR;
    
    UnicodeString pattern1("Impossible {1} has occurred -- status code is {0} and message is {2}.");
    UnicodeString pattern2("Double '' Quotes {0} test and quoted '{1}' test plus 'other {2} stuff'.");

    MessageFormat *messageFormatter = new MessageFormat("", status);
    failure(status, "new MessageFormat");
    
    const UBool possibleDataError = TRUE;

    //try {
        logln("Apply with pattern : " + pattern1);
        messageFormatter->applyPattern(pattern1, status);
        failure(status, "messageFormat->applyPattern");
        //Object[] params = {new Integer(7)};
        Formattable params []= {
            Formattable((int32_t)7)
        };
        UnicodeString tempBuffer;
        FieldPosition pos(FieldPosition::DONT_CARE);
        tempBuffer = messageFormatter->format(params, 1, tempBuffer, pos, status);
        if(tempBuffer != "Impossible {1} has occurred -- status code is 7 and message is {2}." || failure(status, "MessageFormat::format"))
            dataerrln("Tests arguments < substitution failed");
        logln("Formatted with 7 : " + tempBuffer);
        ParsePosition pp(0);
        int32_t count = 0;
        Formattable *objs = messageFormatter->parse(tempBuffer, pp, count);
        //if(objs[7/*params.length*/] != NULL)
        //    errln("Parse failed with more than expected arguments");

        NumberFormat *fmt = 0;
        UnicodeString temp, temp1;
        
        for (int i = 0; i < count; i++) {
            
            // convert to string if not already
            Formattable obj = objs[i];
            temp.remove();
            if(obj.getType() == Formattable::kString)
                temp = obj.getString(temp);
            else {
                fmt = NumberFormat::createInstance(status);
                switch (obj.getType()) {
                case Formattable::kLong: fmt->format(obj.getLong(), temp); break;
                case Formattable::kInt64: fmt->format(obj.getInt64(), temp); break;
                case Formattable::kDouble: fmt->format(obj.getDouble(), temp); break;
                default: break;
                }
            }

            // convert to string if not already
            Formattable obj1 = params[i];
            temp1.remove();
            if(obj1.getType() == Formattable::kString)
                temp1 = obj1.getString(temp1);
            else {
                fmt = NumberFormat::createInstance(status);
                switch (obj1.getType()) {
                case Formattable::kLong: fmt->format(obj1.getLong(), temp1); break;
                case Formattable::kInt64: fmt->format(obj1.getInt64(), temp1); break;
                case Formattable::kDouble: fmt->format(obj1.getDouble(), temp1); break;
                default: break;
                }
            }

            //if (objs[i] != NULL && objs[i].getString(temp1) != params[i].getString(temp2)) {
            if (temp != temp1) {
                errln("Parse failed on object " + objs[i].getString(temp1) + " at index : " + i);
            }       
        }

        delete fmt;
        delete [] objs;

        // {sfb} does this apply?  no way to really pass a null Formattable, 
        // only a null array

        /*tempBuffer = messageFormatter->format(null, tempBuffer, FieldPosition(FieldPosition::DONT_CARE), status);
        if (tempBuffer != "Impossible {1} has occurred -- status code is {0} and message is {2}." || failure(status, "messageFormat->format"))
            errln("Tests with no arguments failed");
        logln("Formatted with null : " + tempBuffer);*/
        logln("Apply with pattern : " + pattern2);
        messageFormatter->applyPattern(pattern2, status);
        failure(status, "messageFormatter->applyPattern", possibleDataError);
        tempBuffer.remove();
        tempBuffer = messageFormatter->format(params, 1, tempBuffer, pos, status);
        if (tempBuffer != "Double ' Quotes 7 test and quoted {1} test plus other {2} stuff.")
            dataerrln("quote format test (w/ params) failed. - %s", u_errorName(status));
        logln("Formatted with params : " + tempBuffer);
        
        /*tempBuffer = messageFormatter->format(null);
        if (!tempBuffer.equals("Double ' Quotes {0} test and quoted {1} test plus other {2} stuff."))
            errln("quote format test (w/ null) failed.");
        logln("Formatted with null : " + tempBuffer);
        logln("toPattern : " + messageFormatter.toPattern());*/
    /*} catch (Exception foo) {
        errln("Exception when formatting in bug 4031438. "+foo.getMessage());
    }*/
//.........这里部分代码省略.........

std::string GlobalizationNDK::numberToString(const std::string& args)
{
    if (args.empty()) {
        slog2f(0, ID_G11N, SLOG2_ERROR, "GlobalizationNDK::numberToString: no arguments provided!");
        return errorInJson(UNKNOWN_ERROR, "No arguments provided!");
    }

    Json::Reader reader;
    Json::Value root;
    bool parse = reader.parse(args, root);

    if (!parse) {
        slog2f(0, ID_G11N, SLOG2_ERROR, "GlobalizationNDK::numberToString: invalid json data: %s",
                args.c_str());
        return errorInJson(PARSING_ERROR, "Invalid json data!");
    }

    Json::Value nv = root["number"];
    if (nv.isNull()) {
        slog2f(0, ID_G11N, SLOG2_ERROR, "GlobalizationNDK::numberToString: no number provided!");
        return errorInJson(FORMATTING_ERROR, "No number provided!");
    }

    if (!nv.isNumeric()) {
        slog2f(0, ID_G11N, SLOG2_ERROR, "GlobalizationNDK::numberToString: invalid number type: %d!",
                nv.type());
        return errorInJson(FORMATTING_ERROR, "Invalid number type!");
    }

    // This is the default value when no options provided.
    ENumberType type = kNumberDecimal;

    Json::Value options = root["options"];
    std::string error;
    if (!handleNumberOptions(options, type, error))
        return errorInJson(PARSING_ERROR, error);

    UErrorCode status = U_ZERO_ERROR;
    NumberFormat* nf;
    switch (type) {
    case kNumberDecimal:
    default:
        nf = NumberFormat::createInstance(status);
        break;
    case kNumberCurrency:
        nf = NumberFormat::createCurrencyInstance(status);
        break;
    case kNumberPercent:
        nf = NumberFormat::createPercentInstance(status);
        break;
    }

    if (!nf) {
        slog2f(0, ID_G11N, SLOG2_ERROR, "GlobalizationNDK::numberToString: failed to create NumberFormat instance for type %d: %d",
                status, type);
        return errorInJson(UNKNOWN_ERROR, "Failed to create NumberFormat instance!");
    }
    std::auto_ptr<NumberFormat> deleter(nf);

    UnicodeString result;
    nf->format(nv.asDouble(), result);
    std::string utf8;
    result.toUTF8String(utf8);

    return resultInJson(utf8);
}