| /* |
| * 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 |
| * |
| * https://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; |
| |
| /** |
| * 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() |
| || event.getMessage().trim().isEmpty()) { |
| return; |
| } |
| |
| synchronized (this) { |
| if (null != targetName) { |
| out.println(String.format("%n%s:", targetName)); |
| targetName = null; |
| } |
| } |
| |
| super.messageLogged(event); |
| } |
| } |