Java XML Document Clone deepCopyDocument(Document ttml, File target)

Description

deep Copy Document

License

Apache License

Declaration

public static void deepCopyDocument(Document ttml, File target)
            throws IOException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

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

import javax.xml.xpath.*;
import java.io.*;
import java.net.URI;
import java.net.URISyntaxException;

public class Main {
    public static void deepCopyDocument(Document ttml, File target)
            throws IOException {
        try {//from  w w  w.java 2 s .  com
            XPathFactory xPathfactory = XPathFactory.newInstance();
            XPath xpath = xPathfactory.newXPath();
            XPathExpression expr = xpath.compile("//*/@backgroundImage");
            NodeList nl = (NodeList) expr.evaluate(ttml,
                    XPathConstants.NODESET);
            for (int i = 0; i < nl.getLength(); i++) {
                Node backgroundImage = nl.item(i);
                URI backgroundImageUri = URI.create(backgroundImage
                        .getNodeValue());
                if (!backgroundImageUri.isAbsolute()) {
                    copyLarge(
                            new URI(ttml.getDocumentURI())
                                    .resolve(backgroundImageUri).toURL()
                                    .openStream(), new File(target.toURI()
                                    .resolve(backgroundImageUri).toURL()
                                    .getFile()));
                }
            }
            copyLarge(new URI(ttml.getDocumentURI()).toURL().openStream(),
                    target);

        } catch (XPathExpressionException e) {
            throw new IOException(e);
        } catch (URISyntaxException e) {
            throw new IOException(e);
        }
    }

    private static long copyLarge(InputStream input, File outputFile)
            throws IOException {
        byte[] buffer = new byte[16384];
        long count = 0;
        int n = 0;
        outputFile.getParentFile().mkdirs();
        FileOutputStream output = new FileOutputStream(outputFile);
        try {
            while (-1 != (n = input.read(buffer))) {
                output.write(buffer, 0, n);
                count += n;
            }
        } finally {
            output.close();
        }
        return count;
    }
}

Related

1. copyDomDocument(Document originalDomDoc)
2. copyElement(Element orig, Document newOwner, Set blankTextNodes)
3. copyNode(Document new_doc, Node node)
4. copyNode(final Document newDoc, final Node node)
5. deepCloneDocument(Document doc, DOMImplementation impl)