org.krysalis.barcode4j.cli.AbstractExitHandler Maven / Gradle / Ivy
/*
* Copyright 2002-2004 Jeremias Maerki.
*
* 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 org.krysalis.barcode4j.cli;
import org.apache.avalon.framework.ExceptionUtil;
/**
* Abstract base class for an exit handler for the CLI.
*
* @author Jeremias Maerki
* @version $Id: AbstractExitHandler.java,v 1.2 2004/09/04 20:25:58 jmaerki Exp $
*/
public abstract class AbstractExitHandler implements ExitHandler {
/** @see org.krysalis.barcode4j.cli.ExitHandler */
public void successfulExit(Main app) {
//nop
}
/** @see org.krysalis.barcode4j.cli.ExitHandler */
public void failureExit(Main app, String msg, Throwable t, int exitCode) {
if (msg == null) {
throw new NullPointerException("msg must not be null");
}
if (exitCode == 0) {
throw new IllegalArgumentException("exitCode must not be zero");
}
app.printAppHeader();
Main.stderr.println(msg);
if (t != null) {
Main.stderr.println(ExceptionUtil.printStackTrace(t));
}
}
}