@Override
public AttributedCharacterIterator formatToCharacterIterator(Object object) {
if (!(object instanceof Number)) {
throw new IllegalArgumentException();
}
Number number = (Number) object;
String text = null;
StringBuffer attributes = new StringBuffer();
if (number instanceof BigInteger) {
BigInteger valBigInteger = (BigInteger) number;
if (valBigInteger.compareTo(new BigInteger(String.valueOf(Long.MAX_VALUE))) > 0) {
throw (new UnsupportedOperationException(
"Number too big. BigInteger > Long.MAX_VALUE not yet supported."));
}
text =
NativeDecimalFormat.format(this.addr, valBigInteger.longValue(), null, null, attributes);
} else if (number instanceof BigDecimal) {
BigDecimal valBigDecimal = (BigDecimal) number;
if (valBigDecimal.compareTo(new BigDecimal(String.valueOf(Double.MAX_VALUE))) > 0) {
throw (new UnsupportedOperationException(
"Number too big. BigDecimal > Double.MAX_VALUE not yet supported."));
}
text =
NativeDecimalFormat.format(
this.addr, valBigDecimal.doubleValue(), null, null, attributes);
} else {
double dv = number.doubleValue();
long lv = number.longValue();
if (dv == lv) {
text = NativeDecimalFormat.format(this.addr, lv, null, null, attributes);
} else {
text = NativeDecimalFormat.format(this.addr, dv, null, null, attributes);
}
}
AttributedString as = new AttributedString(text.toString());
String[] attrs = attributes.toString().split(";");
// add NumberFormat field attributes to the AttributedString
int size = attrs.length / 3;
if (size * 3 != attrs.length) {
return as.getIterator();
}
for (int i = 0; i < size; i++) {
Format.Field attribute = getField(attrs[3 * i]);
as.addAttribute(
attribute,
attribute,
Integer.parseInt(attrs[3 * i + 1]),
Integer.parseInt(attrs[3 * i + 2]));
}
// return the CharacterIterator from AttributedString
return as.getIterator();
}
@Override
public StringBuffer format(Object value, StringBuffer buffer, FieldPosition field) {
if (!(value instanceof Number)) {
throw new IllegalArgumentException();
}
if (buffer == null || field == null) {
throw new NullPointerException();
}
String fieldType = null;
if (field != null) {
fieldType = getFieldType(field.getFieldAttribute());
}
Number number = (Number) value;
if (number instanceof BigInteger) {
BigInteger valBigInteger = (BigInteger) number;
String result =
NativeDecimalFormat.format(
this.addr, valBigInteger.toString(10), field, fieldType, null, 0);
return buffer.append(result);
} else if (number instanceof BigDecimal) {
BigDecimal valBigDecimal = (BigDecimal) number;
String result =
NativeDecimalFormat.format(
this.addr,
valBigDecimal.unscaledValue().toString(10),
field,
fieldType,
null,
valBigDecimal.scale());
return buffer.append(result);
} else {
double dv = number.doubleValue();
long lv = number.longValue();
if (dv == lv) {
String result = NativeDecimalFormat.format(this.addr, lv, field, fieldType, null);
return buffer.append(result);
}
String result = NativeDecimalFormat.format(this.addr, dv, field, fieldType, null);
return buffer.append(result);
}
}
@Override
public StringBuffer format(double value, StringBuffer buffer, FieldPosition field) {
if (buffer == null) {
throw new NullPointerException();
}
String fieldType = null;
if (field != null) {
fieldType = getFieldType(field.getFieldAttribute());
}
String result = NativeDecimalFormat.format(this.addr, value, field, fieldType, null);
buffer.append(result.toCharArray(), 0, result.length());
return buffer;
}