/* Copyright (c) 2002,2003, Stefan Haustein, Oberhausen, Rhld., Germany * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The  above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */  package org.kobjects.isodate;import java.util.*;public class IsoDate {    public static final int DATE = 1;    public static final int TIME = 2;    public static final int DATE_TIME = 3;    static void dd(StringBuffer buf, int i) {        buf.append((char) (((int) '0') + i / 10));        buf.append((char) (((int) '0') + i % 10));    }    public static String dateToString(Date date, int type) {        Calendar c = Calendar.getInstance();        c.setTimeZone(TimeZone.getTimeZone("GMT"));        c.setTime(date);        StringBuffer buf = new StringBuffer();        if ((type & DATE) != 0) {            int year = c.get(Calendar.YEAR);            dd(buf, year / 100);            dd(buf, year % 100);            buf.append('-');            dd(                buf,                c.get(Calendar.MONTH) - Calendar.JANUARY + 1);            buf.append('-');            dd(buf, c.get(Calendar.DAY_OF_MONTH));            if (type == DATE_TIME)                buf.append("T");        }        if ((type & TIME) != 0) {            dd(buf, c.get(Calendar.HOUR_OF_DAY));            buf.append(':');            dd(buf, c.get(Calendar.MINUTE));            buf.append(':');            dd(buf, c.get(Calendar.SECOND));            buf.append('.');            int ms = c.get(Calendar.MILLISECOND);            buf.append((char) (((int) '0') + (ms / 100)));            dd(buf, ms % 100);            buf.append('Z');        }        return buf.toString();    }    public static Date stringToDate(String text, int type) {        Calendar c = Calendar.getInstance();        if ((type & DATE) != 0) {            c.set(                Calendar.YEAR,                Integer.parseInt(text.substring(0, 4)));            c.set(                Calendar.MONTH,                Integer.parseInt(text.substring(5, 7))                    - 1                    + Calendar.JANUARY);            c.set(                Calendar.DAY_OF_MONTH,                Integer.parseInt(text.substring(8, 10)));            if (type != DATE_TIME || text.length () < 11) {				c.set(Calendar.HOUR_OF_DAY, 0);				c.set(Calendar.MINUTE, 0);				c.set(Calendar.SECOND, 0);            		            c.set(Calendar.MILLISECOND, 0);	            return c.getTime();            }            text = text.substring(11);        }        else         	c.setTime(new Date(0));        c.set(            Calendar.HOUR_OF_DAY,            Integer.parseInt(text.substring(0, 2)));        // -11        c.set(            Calendar.MINUTE,            Integer.parseInt(text.substring(3, 5)));        c.set(            Calendar.SECOND,            Integer.parseInt(text.substring(6, 8)));        int pos = 8;        if (pos < text.length() && text.charAt(pos) == '.') {            int ms = 0;            int f = 100;            while (true) {                char d = text.charAt(++pos);                if (d < '0' || d > '9')                    break;                ms += (d - '0') * f;                f /= 10;            }            c.set(Calendar.MILLISECOND, ms);        }        else            c.set(Calendar.MILLISECOND, 0);        if (pos < text.length()) {            if (text.charAt(pos) == '+'                || text.charAt(pos) == '-')                c.setTimeZone(                    TimeZone.getTimeZone(                        "GMT" + text.substring(pos)));            else if (text.charAt(pos) == 'Z')                c.setTimeZone(TimeZone.getTimeZone("GMT"));            else                throw new RuntimeException("illegal time format!");        }        return c.getTime();    }}