rups.com.lowagie.rups.model.XfaFile Maven / Gradle / Ivy
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/*
* $Id: XfaFile.java 3117 2008-01-31 05:53:22Z xlv $
*
* Copyright 2007 Bruno Lowagie.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.lowagie.rups.model;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import com.greenpepper.shaded.org.dom4j.Document;
import com.greenpepper.shaded.org.dom4j.DocumentException;
import com.greenpepper.shaded.org.dom4j.io.OutputFormat;
import com.greenpepper.shaded.org.dom4j.io.SAXReader;
import com.greenpepper.shaded.org.dom4j.io.XMLWriter;
import com.lowagie.rups.io.OutputStreamResource;
/** Class that deals with the XFA file that can be inside a PDF file. */
public class XfaFile implements OutputStreamResource {
/** The X4J Document object (XML). */
protected Document xfaDocument;
/**
* Constructs an XFA file from an OutputStreamResource.
* This resource can be an XML file or a node in a RUPS application.
* @param resource the XFA resource
* @throws IOException
* @throws DocumentException
*/
public XfaFile(OutputStreamResource resource) throws IOException, DocumentException {
// Is there a way to avoid loading everything in memory?
// Can we somehow get the XML from the PDF as an InputSource, Reader or InputStream?
ByteArrayOutputStream baos = new ByteArrayOutputStream();
resource.writeTo(baos);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
SAXReader reader = new SAXReader();
xfaDocument = reader.read(bais);
}
/**
* Getter for the XFA Document object.
* @return a Document object (X4J)
*/
public Document getXfaDocument() {
return xfaDocument;
}
/**
* Writes a formatted XML file to the OutputStream.
* @see com.lowagie.rups.io.OutputStreamResource#writeTo(java.io.OutputStream)
*/
public void writeTo(OutputStream os) throws IOException {
if (xfaDocument == null)
return;
OutputFormat format = new OutputFormat(" ", true);
XMLWriter writer = new XMLWriter(os, format);
writer.write(xfaDocument);
}
}