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/*
* 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.tools.ant;
import org.apache.tools.ant.util.StringUtils;
/**
* Extends DefaultLogger to strip out empty targets.
*
*/
public class NoBannerLogger extends DefaultLogger {
// CheckStyle:VisibilityModifier OFF - bc
/**
* Name of the current target, if it should
* be displayed on the next message. This is
* set when a target starts building, and reset
* to <code>null</code> after the first message for
* the target is logged.
*/
protected String targetName;
// CheckStyle:VisibilityModifier ON
/** Sole constructor. */
public NoBannerLogger() {
}
/**
* Notes the name of the target so it can be logged
* if it generates any messages.
*
* @param event A BuildEvent containing target information.
* Must not be <code>null</code>.
*/
public synchronized void targetStarted(BuildEvent event) {
targetName = extractTargetName(event);
}
/**
* Override point, extract the target name
* @param event the event to work on
* @return the target name to print
* @since Ant1.7.1
*/
protected String extractTargetName(BuildEvent event) {
return event.getTarget().getName();
}
/**
* Resets the current target name to <code>null</code>.
*
* @param event Ignored in this implementation.
*/
public synchronized void targetFinished(BuildEvent event) {
targetName = null;
}
/**
* Logs a message for a target if it is of an appropriate
* priority, also logging the name of the target if this
* is the first message which needs to be logged for the
* target.
*
* @param event A BuildEvent containing message information.
* Must not be <code>null</code>.
*/
public void messageLogged(BuildEvent event) {
if (event.getPriority() > msgOutputLevel
|| null == event.getMessage()
|| "".equals(event.getMessage().trim())) {
return;
}
synchronized (this) {
if (null != targetName) {
out.println(StringUtils.LINE_SEP + targetName + ":");
targetName = null;
}
}
super.messageLogged(event);
}
}
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