| /* |
| * 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.felix.obr.plugin; |
| |
| |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| |
| /** |
| * Provide XML helper methods to support pre-Java5 runtimes |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class XmlHelper |
| { |
| /** |
| * based on public Java5 javadoc of org.w3c.dom.Node.getTextContent method |
| */ |
| public static String getTextContent( Node node ) |
| { |
| switch ( node.getNodeType() ) |
| { |
| case Node.ELEMENT_NODE: |
| case Node.ATTRIBUTE_NODE: |
| case Node.ENTITY_NODE: |
| case Node.ENTITY_REFERENCE_NODE: |
| case Node.DOCUMENT_FRAGMENT_NODE: |
| return mergeTextContent( node.getChildNodes() ); |
| case Node.TEXT_NODE: |
| case Node.CDATA_SECTION_NODE: |
| case Node.COMMENT_NODE: |
| case Node.PROCESSING_INSTRUCTION_NODE: |
| return node.getNodeValue(); |
| case Node.DOCUMENT_NODE: |
| case Node.DOCUMENT_TYPE_NODE: |
| case Node.NOTATION_NODE: |
| default: |
| return null; |
| } |
| } |
| |
| |
| /** |
| * based on the following quote from public Java5 javadoc of org.w3c.dom.Node.getTextContent method: |
| * |
| * "concatenation of the textContent attribute value of every child node, excluding COMMENT_NODE and |
| * PROCESSING_INSTRUCTION_NODE nodes. This is the empty string if the node has no children" |
| */ |
| private static String mergeTextContent( NodeList nodes ) |
| { |
| StringBuffer buf = new StringBuffer(); |
| for ( int i = 0; i < nodes.getLength(); i++ ) |
| { |
| Node n = nodes.item( i ); |
| final String text; |
| |
| switch ( n.getNodeType() ) |
| { |
| case Node.COMMENT_NODE: |
| case Node.PROCESSING_INSTRUCTION_NODE: |
| text = null; |
| break; |
| default: |
| text = getTextContent( n ); |
| break; |
| } |
| |
| if ( text != null ) |
| { |
| buf.append( text ); |
| } |
| } |
| return buf.toString(); |
| } |
| |
| |
| /** |
| * based on public Java5 javadoc of org.w3c.dom.Node.setTextContent method |
| */ |
| public static void setTextContent( Node node, final String text ) |
| { |
| while ( node.hasChildNodes() ) |
| { |
| node.removeChild( node.getFirstChild() ); |
| } |
| |
| if ( text != null && text.length() > 0 ) |
| { |
| Node textNode = node.getOwnerDocument().createTextNode( text ); |
| node.appendChild( textNode ); |
| } |
| } |
| } |