Mega Code Archive
Copies the source tree into the specified place in a destination tree
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import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import com.sun.org.apache.xerces.internal.dom.AttrImpl;
import com.sun.org.apache.xerces.internal.dom.DocumentImpl;
/*
* 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.
*/
public class Main {
/**
* Copies the source tree into the specified place in a destination
* tree. The source node and its children are appended as children
* of the destination node.
* <p>
* <em>Note:</em> This is an iterative implementation.
*/
public static void copyInto(Node src, Node dest) throws DOMException {
// get node factory
Document factory = dest.getOwnerDocument();
boolean domimpl = factory instanceof DocumentImpl;
// placement variables
Node start = src;
Node parent = src;
Node place = src;
// traverse source tree
while (place != null) {
// copy this node
Node node = null;
int type = place.getNodeType();
switch (type) {
case Node.CDATA_SECTION_NODE: {
node = factory.createCDATASection(place.getNodeValue());
break;
}
case Node.COMMENT_NODE: {
node = factory.createComment(place.getNodeValue());
break;
}
case Node.ELEMENT_NODE: {
Element element = factory.createElement(place.getNodeName());
node = element;
NamedNodeMap attrs = place.getAttributes();
int attrCount = attrs.getLength();
for (int i = 0; i < attrCount; i++) {
Attr attr = (Attr)attrs.item(i);
String attrName = attr.getNodeName();
String attrValue = attr.getNodeValue();
element.setAttribute(attrName, attrValue);
if (domimpl && !attr.getSpecified()) {
((AttrImpl)element.getAttributeNode(attrName)).setSpecified(false);
}
}
break;
}
case Node.ENTITY_REFERENCE_NODE: {
node = factory.createEntityReference(place.getNodeName());
break;
}
case Node.PROCESSING_INSTRUCTION_NODE: {
node = factory.createProcessingInstruction(place.getNodeName(),
place.getNodeValue());
break;
}
case Node.TEXT_NODE: {
node = factory.createTextNode(place.getNodeValue());
break;
}
default: {
throw new IllegalArgumentException("can't copy node type, "+
type+" ("+
node.getNodeName()+')');
}
dest.appendChild(node);
// iterate over children
if (place.hasChildNodes()) {
parent = place;
place = place.getFirstChild();
dest = node;
}
// advance
else {
place = place.getNextSibling();
while (place == null && parent != start) {
place = parent.getNextSibling();
parent = parent.getParentNode();
dest = dest.getParentNode();
}
}
}
} // copyInto(Node,Node)
}
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