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* CruiseControl, a Continuous Integration Toolkit
* Copyright (c) 2004, ThoughtWorks, Inc.
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package net.sourceforge.cruisecontrol.util;
import java.text.DateFormat;
import java.text.FieldPosition;
import java.text.NumberFormat;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
/**
* A custom formatter that will take numbers and display them as if they were timestamps (<em>not</em> date stamps).
* To achieve this, it actually delegates down to a DateFormatter (using a format of HH:mm). This date formatter is
* configured to work on UTC time, as a number value of 0 represents midnight.
*
* @author <a href="mailto:robertdw@users.sourceforge.net">Robert Watkins</a>
*/
public final class TimeNumberFormat extends NumberFormat {
private static final String UTC_TIME_ZONE = "+0:00";
private static final String HOURS_MINUTE = "HH:mm";
private final DateFormat realFormat;
/** Initialise the formatter */
public TimeNumberFormat() {
SimpleDateFormat format = new SimpleDateFormat(HOURS_MINUTE);
format.setTimeZone(TimeZone.getTimeZone(UTC_TIME_ZONE));
realFormat = format;
}
/** Delegates down to date format */
public StringBuffer format(double arg0, StringBuffer arg1,
FieldPosition arg2) {
return realFormat.format(new Date((long) arg0), arg1, arg2);
}
/** Delegates down to date format */
public StringBuffer format(long arg0, StringBuffer arg1,
FieldPosition arg2) {
return realFormat.format(new Date(arg0), arg1, arg2);
}
/** Delegates down to date format */
public Number parse(String arg0, ParsePosition arg1) {
return new Long(realFormat.parse(arg0, arg1).getTime());
}
}