source: josm/trunk/src/org/openstreetmap/josm/data/osm/DateFormatter.java@ 627

package org.openstreetmap.josm.data.osm;

import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;


/**
 * Outputs a date in a format suitable for an OSM XML file.
 * 
 * @author Brett Henderson
 */
public class DateFormatter {
        
        private GregorianCalendar calendar;
        
        
        /**
         * Creates a new instance.
         */
        public DateFormatter() {
                calendar = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
        }
        
        
        /**
         * Formats a date in XML format.
         * 
         * @param date
         *            The date to be formatted.
         * @return The string representing the date.
         */
        public String format(Date date) {
                StringBuilder result;
                int year;
                int month;
                int day;
                int hour;
                int minute;
                int second;
                
                calendar.setTime(date);
                
                result = new StringBuilder(20);
                
                year = calendar.get(Calendar.YEAR);
                month = calendar.get(Calendar.MONTH) + 1;
                day = calendar.get(Calendar.DATE);
                hour = calendar.get(Calendar.HOUR_OF_DAY);
                minute = calendar.get(Calendar.MINUTE);
                second = calendar.get(Calendar.SECOND);
                
                result.append(year);
                result.append('-');
                if (month < 10) {
                        result.append('0');
                }
                result.append(month);
                result.append('-');
                if (day < 10) {
                        result.append('0');
                }
                result.append(day);
                result.append('T');
                if (hour < 10) {
                        result.append('0');
                }
                result.append(hour);
                result.append(':');
                if (minute < 10) {
                        result.append('0');
                }
                result.append(minute);
                result.append(':');
                if (second < 10) {
                        result.append('0');
                }
                result.append(second);
                result.append('Z');
                
                return result.toString();
        }
}