| package org.apache.maven.model.transform.pull; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| import org.codehaus.plexus.util.xml.pull.XmlPullParser; |
| import org.codehaus.plexus.util.xml.pull.XmlPullParserException; |
| |
| /** |
| * Buffer events while parsing a given element to allow some post-processing. |
| * |
| * @author Guillaume Nodet |
| * @since 4.0.0 |
| */ |
| public abstract class NodeBufferingParser extends BufferingParser |
| { |
| |
| private final List<Event> buffer = new ArrayList<>(); |
| |
| private final String nodeName; |
| |
| private boolean buffering; |
| |
| public NodeBufferingParser( XmlPullParser xmlPullParser, String nodeName ) |
| { |
| super( xmlPullParser ); |
| this.nodeName = Objects.requireNonNull( nodeName ); |
| } |
| |
| @Override |
| protected boolean accept() throws XmlPullParserException, IOException |
| { |
| if ( nodeName.equals( xmlPullParser.getName() ) ) |
| { |
| if ( xmlPullParser.getEventType() == START_TAG && !buffering ) |
| { |
| buffer.add( bufferEvent() ); |
| buffering = true; |
| return false; |
| } |
| if ( xmlPullParser.getEventType() == END_TAG && buffering ) |
| { |
| buffer.add( bufferEvent() ); |
| process( buffer ); |
| buffering = false; |
| buffer.clear(); |
| return false; |
| } |
| } |
| else if ( buffering ) |
| { |
| buffer.add( bufferEvent() ); |
| return false; |
| } |
| return true; |
| } |
| |
| protected abstract void process( List<Event> buffer ); |
| |
| } |