QString RealFormat::doFormat(const Variant& val) const
{
QString result;
const LongReal* vr = dynamic_cast<const LongReal*>((const VariantData*)val);
if (!vr)
return result;
if (vr->isNaN())
return formatNaN();
if (vr->isZero())
return formatZero();
int usedigits = significandbase == base || precision == 0?
getDigits() :
(precision - 1) / _digitsz(base) + 1;
RawFloatIO RawFloatIO = vr->convert(usedigits, mode, base);
if (RawFloatIO.error != Success)
return result;
result = getSignificandPrefix(RawFloatIO)
+ formatInt(RawFloatIO)
+ formatFrac(RawFloatIO)
+ getSignificandSuffix(RawFloatIO);
if (useScale(RawFloatIO))
result += getScalePrefix(RawFloatIO)
+ formatScale(RawFloatIO)
+ getScaleSuffix(RawFloatIO);
return result;
}
UnicodeString &DigitFormatter::format(
const VisibleDigits &digits,
const DigitGrouping &grouping,
const DigitFormatterOptions &options,
FieldPositionHandler &handler,
UnicodeString &appendTo) const {
if (digits.isNaN()) {
return formatNaN(handler, appendTo);
}
if (digits.isInfinite()) {
return formatInfinity(handler, appendTo);
}
const DigitInterval &interval = digits.getInterval();
int32_t digitsLeftOfDecimal = interval.getMostSignificantExclusive();
int32_t lastDigitPos = interval.getLeastSignificantInclusive();
int32_t intBegin = appendTo.length();
int32_t fracBegin;
// Emit "0" instead of empty string.
if (digitsLeftOfDecimal == 0 && lastDigitPos == 0) {
appendTo.append(fLocalizedDigits[0]);
handler.addAttribute(UNUM_INTEGER_FIELD, intBegin, appendTo.length());
if (options.fAlwaysShowDecimal) {
appendField(
UNUM_DECIMAL_SEPARATOR_FIELD,
fDecimal,
handler,
appendTo);
}
return appendTo;
}
{
UnicodeStringAppender appender(appendTo);
for (int32_t i = interval.getMostSignificantExclusive() - 1;
i >= interval.getLeastSignificantInclusive(); --i) {
if (i == -1) {
appender.flush();
appendField(
UNUM_DECIMAL_SEPARATOR_FIELD,
fDecimal,
handler,
appendTo);
fracBegin = appendTo.length();
}
appender.append(fLocalizedDigits[digits.getDigitByExponent(i)]);
if (grouping.isSeparatorAt(digitsLeftOfDecimal, i)) {
appender.flush();
appendField(
UNUM_GROUPING_SEPARATOR_FIELD,
fGroupingSeparator,
handler,
appendTo);
}
if (i == 0) {
appender.flush();
if (digitsLeftOfDecimal > 0) {
handler.addAttribute(UNUM_INTEGER_FIELD, intBegin, appendTo.length());
}
}
}
if (options.fAlwaysShowDecimal && lastDigitPos == 0) {
appender.flush();
appendField(
UNUM_DECIMAL_SEPARATOR_FIELD,
fDecimal,
handler,
appendTo);
}
}
// lastDigitPos is never > 0 so we are guaranteed that kIntegerField
// is already added.
if (lastDigitPos < 0) {
handler.addAttribute(UNUM_FRACTION_FIELD, fracBegin, appendTo.length());
}
return appendTo;
}
