/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.ode.utils.xsd;
import java.math.BigDecimal;
import java.util.Calendar;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Support for xml schema duration.
*
* Does NOT support negative duration, only positive!!
*/
public class Duration {
static final Pattern PATTERN =
Pattern.compile("P(\\d+Y)?(\\d+M)?(\\d+D)?(T(\\d+H)?(\\d+M)?((\\d+\\.?\\d*|\\.\\d+)S)?)?");
static final int YEAR_MG = 1;
static final int MONTH_MG = 2;
static final int DAY_MG = 3;
static final int HOUR_MG = 5;
static final int MIN_MG = 6;
static final int SEC_MG = 8;
private int _years;
private int _months;
private int _days;
private int _hours;
private int _minutes;
private BigDecimal _seconds;
/**
*
*/
public Duration(String duration) {
Matcher m = PATTERN.matcher(duration);
if(m.matches()){
_years = parseInt(m.group(YEAR_MG));
_months = parseInt(m.group(MONTH_MG));
_days = parseInt(m.group(DAY_MG));
_hours = parseInt(m.group(HOUR_MG));
_minutes = parseInt(m.group(MIN_MG));
_seconds = m.group(SEC_MG) == null
? null : new BigDecimal(m.group(SEC_MG));
}
else{
throw new IllegalArgumentException("Bad duration: " + duration);
}
}
/**
* Adds current duration to a calendar object.
* @param calendar
*/
public void addTo(Calendar calendar){
calendar.add( Calendar.YEAR, _years );
calendar.add( Calendar.MONTH, _months );
calendar.add( Calendar.DAY_OF_MONTH, _days );
calendar.add( Calendar.HOUR, _hours );
calendar.add( Calendar.MINUTE, _minutes );
calendar.add( Calendar.SECOND, (_seconds == null)
? 0 : _seconds.intValue());
if(_seconds!=null) {
BigDecimal fraction = _seconds.subtract(_seconds.setScale(0,BigDecimal.ROUND_DOWN));
int millisec = fraction.movePointRight(3).intValue();
calendar.add( Calendar.MILLISECOND, millisec );
}
}
private static int parseInt(String value){
if(value == null)
return 0;
else{
return Integer.parseInt(value.substring(0, value.length()-1));
}
}
}