/**
* Formats the date input according to the format string in use, appending to the specified
* StringBuffer. The input StringBuffer is returned as output for convenience.
*/
private void formatWithAttribute(Date date, FormatBuffer buffer, FieldPosition pos) {
String temp;
AttributedCharacterIterator.Attribute attribute;
calendar.setTime(date);
// go through vector, filling in fields where applicable, else toString
Iterator iter = tokens.iterator();
while (iter.hasNext()) {
Object o = iter.next();
if (o instanceof CompiledField) {
CompiledField cf = (CompiledField) o;
int beginIndex = buffer.length();
switch (cf.getField()) {
case ERA_FIELD:
buffer.append(formatData.eras[calendar.get(Calendar.ERA)], DateFormat.Field.ERA);
break;
case YEAR_FIELD:
// If we have two digits, then we truncate. Otherwise, we
// use the size of the pattern, and zero pad.
buffer.setDefaultAttribute(DateFormat.Field.YEAR);
if (cf.getSize() == 2) {
temp = String.valueOf(calendar.get(Calendar.YEAR));
buffer.append(temp.substring(temp.length() - 2));
} else withLeadingZeros(calendar.get(Calendar.YEAR), cf.getSize(), buffer);
break;
case MONTH_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.MONTH);
if (cf.getSize() < 3)
withLeadingZeros(calendar.get(Calendar.MONTH) + 1, cf.getSize(), buffer);
else if (cf.getSize() < 4)
buffer.append(formatData.shortMonths[calendar.get(Calendar.MONTH)]);
else buffer.append(formatData.months[calendar.get(Calendar.MONTH)]);
break;
case DATE_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.DAY_OF_MONTH);
withLeadingZeros(calendar.get(Calendar.DATE), cf.getSize(), buffer);
break;
case HOUR_OF_DAY1_FIELD: // 1-24
buffer.setDefaultAttribute(DateFormat.Field.HOUR_OF_DAY1);
withLeadingZeros(
((calendar.get(Calendar.HOUR_OF_DAY) + 23) % 24) + 1, cf.getSize(), buffer);
break;
case HOUR_OF_DAY0_FIELD: // 0-23
buffer.setDefaultAttribute(DateFormat.Field.HOUR_OF_DAY0);
withLeadingZeros(calendar.get(Calendar.HOUR_OF_DAY), cf.getSize(), buffer);
break;
case MINUTE_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.MINUTE);
withLeadingZeros(calendar.get(Calendar.MINUTE), cf.getSize(), buffer);
break;
case SECOND_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.SECOND);
withLeadingZeros(calendar.get(Calendar.SECOND), cf.getSize(), buffer);
break;
case MILLISECOND_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.MILLISECOND);
withLeadingZeros(calendar.get(Calendar.MILLISECOND), cf.getSize(), buffer);
break;
case DAY_OF_WEEK_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.DAY_OF_WEEK);
if (cf.getSize() < 4)
buffer.append(formatData.shortWeekdays[calendar.get(Calendar.DAY_OF_WEEK)]);
else buffer.append(formatData.weekdays[calendar.get(Calendar.DAY_OF_WEEK)]);
break;
case DAY_OF_YEAR_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.DAY_OF_YEAR);
withLeadingZeros(calendar.get(Calendar.DAY_OF_YEAR), cf.getSize(), buffer);
break;
case DAY_OF_WEEK_IN_MONTH_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.DAY_OF_WEEK_IN_MONTH);
withLeadingZeros(calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH), cf.getSize(), buffer);
break;
case WEEK_OF_YEAR_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.WEEK_OF_YEAR);
withLeadingZeros(calendar.get(Calendar.WEEK_OF_YEAR), cf.getSize(), buffer);
break;
case WEEK_OF_MONTH_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.WEEK_OF_MONTH);
withLeadingZeros(calendar.get(Calendar.WEEK_OF_MONTH), cf.getSize(), buffer);
break;
case AM_PM_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.AM_PM);
buffer.append(formatData.ampms[calendar.get(Calendar.AM_PM)]);
break;
case HOUR1_FIELD: // 1-12
buffer.setDefaultAttribute(DateFormat.Field.HOUR1);
withLeadingZeros(((calendar.get(Calendar.HOUR) + 11) % 12) + 1, cf.getSize(), buffer);
break;
case HOUR0_FIELD: // 0-11
buffer.setDefaultAttribute(DateFormat.Field.HOUR0);
withLeadingZeros(calendar.get(Calendar.HOUR), cf.getSize(), buffer);
break;
case TIMEZONE_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.TIME_ZONE);
TimeZone zone = calendar.getTimeZone();
boolean isDST = calendar.get(Calendar.DST_OFFSET) != 0;
// FIXME: XXX: This should be a localized time zone.
String zoneID =
zone.getDisplayName(isDST, cf.getSize() > 3 ? TimeZone.LONG : TimeZone.SHORT);
buffer.append(zoneID);
break;
case RFC822_TIMEZONE_FIELD:
buffer.setDefaultAttribute(DateFormat.Field.RFC822_TIME_ZONE);
int pureMinutes =
(calendar.get(Calendar.ZONE_OFFSET) + calendar.get(Calendar.DST_OFFSET))
/ (1000 * 60);
String sign = (pureMinutes < 0) ? "-" : "+";
int hours = pureMinutes / 60;
int minutes = pureMinutes % 60;
buffer.append(sign);
withLeadingZeros(hours, 2, buffer);
withLeadingZeros(minutes, 2, buffer);
break;
default:
throw new IllegalArgumentException("Illegal pattern character " + cf.getCharacter());
}
if (pos != null
&& (buffer.getDefaultAttribute() == pos.getFieldAttribute()
|| cf.getField() == pos.getField())) {
pos.setBeginIndex(beginIndex);
pos.setEndIndex(buffer.length());
}
} else {
buffer.append(o.toString(), null);
}
}
}
