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• XMLBox.java

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com.github.jaiimageio.jpeg2000.impl.XMLBox Maven / Gradle / Ivy

/*
 * $RCSfile: XMLBox.java,v $
 *
 * 
 * Copyright (c) 2005 Sun Microsystems, Inc. All  Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met: 
 * 
 * - Redistribution of source code must retain the above copyright 
 *   notice, this  list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in 
 *   the documentation and/or other materials provided with the
 *   distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of 
 * contributors may be used to endorse or promote products derived 
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any 
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL 
 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF 
 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR 
 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES. 
 * 
 * You acknowledge that this software is not designed or intended for 
 * use in the design, construction, operation or maintenance of any 
 * nuclear facility. 
 *
 * $Revision: 1.1 $
 * $Date: 2005/02/11 05:01:37 $
 * $State: Exp $
 */
package com.github.jaiimageio.jpeg2000.impl;

import javax.imageio.metadata.IIOInvalidTreeException;
import javax.imageio.metadata.IIOMetadataNode;

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/** This class is defined to represent a XML box of JPEG JP2
 *  file format.  This type of box has a length, a type of "xml ".  Its
 *  content is a text string of a XML instance.
 */
public class XMLBox extends Box {
    /** Cache the element names for this box's xml definition */
    private static String[] elementNames = {"Content"};

    /** This method will be called by the getNativeNodeForSimpleBox of the
     *  class Box to get the element names.
     */
    public static String[] getElementNames() {
        return elementNames;
    }

    /** Create a Box from its content. */
    public XMLBox(byte[] data) {
        super(8 + data.length, 0x786D6C20, data);
    }

    /** Constructs a UUIDListBox based on the provided
     *  org.w3c.dom.Node.
     */
    public XMLBox(Node node) throws IIOInvalidTreeException {
        super(node);
        NodeList children = node.getChildNodes();

        for (int i = 0; i < children.getLength(); i++) {
            Node child = children.item(i);
            String name = child.getNodeName();

            if ("Content".equals(name)) {
		String value = child.getNodeValue();
		if (value != null)
		    data = value.getBytes();
		else if (child instanceof IIOMetadataNode) {
		    value = (String)((IIOMetadataNode)child).getUserObject();
		    if (value != null)
			data = value.getBytes();
		}
            }
        }
    }

    /** Creates an IIOMetadataNode from this XML
     *  box.  The format of this node is defined in the XML dtd and xsd
     *  for the JP2 image file.
     */
    public IIOMetadataNode getNativeNode() {
        try {
            IIOMetadataNode node = new IIOMetadataNode(Box.getName(getType()));
            setDefaultAttributes(node);
	    IIOMetadataNode child = new IIOMetadataNode("Content");
	    String value = null;
	    if (data != null)
		value = new String(data);
	    child.setUserObject(value);
	    child.setNodeValue(value);
	    node.appendChild(child);    
            return node;
        } catch (Exception e) {
            throw new IllegalArgumentException(I18N.getString("Box0"));
        }
    }
}