/*
* Copyright 2011-2013 Hauser Olsson GmbH
*
* Licensed 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 ch.agent.t2.timeutil;
import ch.agent.t2.T2Exception;
import ch.agent.t2.time.Adjustment;
import ch.agent.t2.time.SystemTime;
import ch.agent.t2.time.TimeDomain;
import ch.agent.t2.time.TimeIndex;
/**
* TimeUtil provides a selection of stateless methods useful in various applications.
*
* @author Jean-Paul Vetterli
*/
public class TimeUtil {
/**
* Return the current date and time. If required by the time domain, the
* date is adjusted downward.
*
* @param domain a non-null time domain
* @return the current time
*/
public static TimeIndex now(TimeDomain domain) {
try {
TimeIndex t = new SystemTime();
return t.convert(domain, Adjustment.DOWN);
} catch (T2Exception e) {
// should not occur because of the adjustment
throw new RuntimeException(e);
}
}
/**
* Interpret a positive 2-digit year between 90 and 99 in the 1990s and all
* others in the 2000s. All other years are returned as is, even negative
* years.
*
* @param year
* a year, possibly with only two digits
* @return a four digit year
*/
public static int normalize2DigitYear(int year) {
if (year > -1 && year < 100) {
if (year >= 90)
year += 1900;
else
year += 2000;
}
return year;
}
}