| /* |
| * 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.maven.project.harness; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.commons.jxpath.ri.Compiler; |
| import org.apache.commons.jxpath.ri.compiler.NodeNameTest; |
| import org.apache.commons.jxpath.ri.compiler.NodeTest; |
| import org.apache.commons.jxpath.ri.compiler.NodeTypeTest; |
| import org.apache.commons.jxpath.ri.model.NodeIterator; |
| import org.apache.commons.jxpath.ri.model.NodePointer; |
| import org.apache.maven.api.xml.XmlNode; |
| import org.codehaus.plexus.util.xml.Xpp3Dom; |
| |
| /** |
| * A node iterator for JXPath to support <code>Xpp3Dom</code>. |
| * |
| */ |
| class Xpp3DomNodeIterator implements NodeIterator { |
| |
| private NodePointer parent; |
| |
| private NodeTest test; |
| |
| private XmlNode node; |
| |
| private List<XmlNode> children; |
| |
| private List<XmlNode> filteredChildren = new ArrayList<>(); |
| |
| private int filteredIndex; |
| |
| private XmlNode child; |
| |
| private int position; |
| |
| public Xpp3DomNodeIterator(NodePointer parent, NodeTest test, boolean reverse, NodePointer startWith) { |
| this.parent = parent; |
| this.node = (XmlNode) parent.getNode(); |
| this.children = this.node.getChildren(); |
| if (startWith != null) { |
| Xpp3Dom startWithNode = (Xpp3Dom) startWith.getNode(); |
| for (; filteredIndex < children.size(); filteredIndex++) { |
| if (startWithNode.equals(children.get(filteredIndex))) { |
| filteredIndex++; |
| break; |
| } |
| } |
| } |
| this.test = test; |
| if (reverse) { |
| throw new UnsupportedOperationException(); |
| } |
| } |
| |
| public NodePointer getNodePointer() { |
| if (position == 0) { |
| setPosition(1); |
| } |
| return (child == null) ? null : new Xpp3DomNodePointer(parent, child); |
| } |
| |
| public int getPosition() { |
| return position; |
| } |
| |
| public boolean setPosition(int position) { |
| this.position = position; |
| filterChildren(position); |
| child = (position > 0 && position <= filteredChildren.size()) ? filteredChildren.get(position - 1) : null; |
| return child != null; |
| } |
| |
| private void filterChildren(int position) { |
| for (; position > filteredChildren.size() && filteredIndex < children.size(); filteredIndex++) { |
| XmlNode child = children.get(filteredIndex); |
| if (testNode(child)) { |
| filteredChildren.add(child); |
| } |
| } |
| } |
| |
| private boolean testNode(XmlNode node) { |
| if (test == null) { |
| return true; |
| } |
| if (test instanceof NodeNameTest) { |
| String nodeName = node.getName(); |
| if (nodeName == null || nodeName.isEmpty()) { |
| return false; |
| } |
| |
| NodeNameTest nodeNameTest = (NodeNameTest) test; |
| String namespaceURI = nodeNameTest.getNamespaceURI(); |
| boolean wildcard = nodeNameTest.isWildcard(); |
| String testName = nodeNameTest.getNodeName().getName(); |
| String testPrefix = nodeNameTest.getNodeName().getPrefix(); |
| if (wildcard && testPrefix == null) { |
| return true; |
| } |
| if (wildcard || testName.equals(nodeName)) { |
| return (namespaceURI == null || namespaceURI.isEmpty()) || (testPrefix == null || testPrefix.isEmpty()); |
| } |
| return false; |
| } |
| if (test instanceof NodeTypeTest) { |
| switch (((NodeTypeTest) test).getNodeType()) { |
| case Compiler.NODE_TYPE_NODE: |
| return true; |
| case Compiler.NODE_TYPE_TEXT: |
| return node.getValue() != null; |
| default: |
| return false; |
| } |
| } |
| return false; |
| } |
| } |