diff options
Diffstat (limited to 'xmerge/source/xmerge/java/org/openoffice/xmerge/util/XmlUtil.java')
| -rw-r--r-- | xmerge/source/xmerge/java/org/openoffice/xmerge/util/XmlUtil.java | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/xmerge/source/xmerge/java/org/openoffice/xmerge/util/XmlUtil.java b/xmerge/source/xmerge/java/org/openoffice/xmerge/util/XmlUtil.java new file mode 100644 index 000000000000..93b1eb076c3f --- /dev/null +++ b/xmerge/source/xmerge/java/org/openoffice/xmerge/util/XmlUtil.java @@ -0,0 +1,192 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2008 by Sun Microsystems, Inc. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * $RCSfile: XmlUtil.java,v $ + * $Revision: 1.4 $ + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +package org.openoffice.xmerge.util; + +import org.w3c.dom.Node; +import org.w3c.dom.Document; +import org.w3c.dom.NodeList; +import org.w3c.dom.Element; +import org.w3c.dom.NamedNodeMap; + +/** + * Class containing static util methods for handling XML trees. + * + * @author smak + */ +public final class XmlUtil { + + + /** + * Perform a deep clone of certain <code>Node</code> which + * will base on the document <code>Node</code> of the old + * <code>Node</code>. + * + * @param oldNode The <code>Document</code> of this + * <code>Node</code> is used to clone + * the <code>Node</code> + * @param newNode The <code>Node</code> to clone. + * + * @return The cloned <code>Node</code>. + */ + public static Node deepClone(Node oldNode, Node newNode) { + Document docNode = oldNode.getOwnerDocument(); + + // clone the starting node + Node clonedNode = cloneNode(docNode, newNode); + + // then clone the sub-tree recursively + cloneTree(docNode, clonedNode, newNode); + + return clonedNode; + } + + + /** + * Clone the sub-tree under certain given <code>Node</code> + * + * @param docNode The <code>Document</code> used to clone + * the <code>Node</code>. + * @param oldNode The <code>Node</code> to clone. + * @param newNode The destination <code>Node</code>. + */ + private static void cloneTree(Document docNode, Node oldNode, Node newNode) { + + NodeList nodeList = newNode.getChildNodes(); + int nodeListLen = nodeList.getLength(); + + for (int i = 0; i < nodeListLen; i++) { + Node newClonedChild = cloneNode(docNode, nodeList.item(i)); + if (newClonedChild != null) { + oldNode.appendChild(newClonedChild); + cloneTree(docNode, newClonedChild, nodeList.item(i)); + } + } + } + + + /** + * Clone a <code>Node</code> (either text or element). + * + * @param docNode The <code>Document</code> used to + * clone the <code>Node</code>. + * @param newNode The <code>Node</code> to clone. + * + * @return The cloned <code>Node</code>. + */ + private static Node cloneNode(Document docNode, Node newNode) { + + Node clonedNode = null; + + // only support text node and element node (will copy the attributes) + switch (newNode.getNodeType()) { + case Node.TEXT_NODE: + String textStr = newNode.getNodeValue(); + clonedNode = docNode.createTextNode(textStr); + break; + case Node.ELEMENT_NODE: + Element oldElem = (Element)newNode; + String tagName = newNode.getNodeName(); + Element newElem = (docNode.createElement(tagName)); + + // copy the attributes + NamedNodeMap attrs = oldElem.getAttributes(); + + for (int i = 0; i < attrs.getLength(); i++) { + newElem.setAttribute(attrs.item(i).getNodeName(), + attrs.item(i).getNodeValue()); + } + clonedNode = newElem; + break; + } + return clonedNode; + } + + + /** + * Returns the name and type of an XML DOM <code>Node</code>. + * + * @param node <code>Node</code> to query. + * + * @return Name and type of XML DOM <code>Node</code>. + */ + public static String getNodeInfo(Node node) { + + String str = null; + switch (node.getNodeType()) { + + case Node.ELEMENT_NODE: + str = "ELEMENT"; + break; + case Node.ATTRIBUTE_NODE: + str = "ATTRIBUTE"; + break; + case Node.TEXT_NODE: + str = "TEXT"; + break; + case Node.CDATA_SECTION_NODE: + str = "CDATA_SECTION"; + break; + case Node.ENTITY_REFERENCE_NODE: + str = "ENTITY_REFERENCE"; + break; + case Node.ENTITY_NODE: + str = "ENTITY"; + break; + case Node.PROCESSING_INSTRUCTION_NODE: + str = "PROCESSING_INSTRUCTION"; + break; + case Node.COMMENT_NODE: + str = "COMMENT"; + break; + case Node.DOCUMENT_NODE: + str = "DOCUMENT"; + break; + case Node.DOCUMENT_TYPE_NODE: + str = "DOCUMENT_TYPE"; + break; + case Node.DOCUMENT_FRAGMENT_NODE: + str = "DOCUMENT_FRAGMENT"; + break; + case Node.NOTATION_NODE: + str = "NOTATION"; + break; + } + + StringBuffer buffer = new StringBuffer("name=\""); + buffer.append(node.getNodeName()); + buffer.append("\" type=\""); + buffer.append(str); + buffer.append("\""); + + return buffer.toString(); + } +} + |