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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
/* $Id$ */
package org.apache.fop.apps;
// Java
import java.io.File;
import java.net.URL;
// Imported SAX classes
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
// JAXP
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.Source;
import javax.xml.transform.Result;
import javax.xml.transform.sax.SAXSource;
import javax.xml.transform.sax.SAXResult;
/**
* Manages input if it is an XSL-FO file.
*/
public class FOFileHandler extends InputHandler {
private File fofile = null;
private URL foURL = null;
/**
* Create a FOFileHandler for a file.
* @param fofile the file to read the FO document.
*/
public FOFileHandler(File fofile) {
this.fofile = fofile;
try {
baseURL =
new File(fofile.getAbsolutePath()).getParentFile().toURL().toExternalForm();
} catch (Exception e) {
baseURL = "";
}
}
/**
* Create a FOFileHandler for an URL.
* @param url the URL to read the FO document.
*/
public FOFileHandler(URL url) {
this.foURL = url;
}
/**
* @see org.apache.fop.apps.InputHandler#getInputSource()
*/
public InputSource getInputSource () {
if (fofile != null) {
return super.fileInputSource(fofile);
}
return super.urlInputSource(foURL);
}
/**
* @see org.apache.fop.apps.InputHandler#render(Fop)
*/
public void render(Fop fop) throws FOPException {
// temporary until baseURL removed from inputHandler objects
if (fop.getUserAgent().getBaseURL() == null) {
fop.getUserAgent().setBaseURL(getBaseURL());
}
try {
// Setup JAXP using identity transformer (no stylesheet here)
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer();
// Setup input stream
Source src = new SAXSource(getInputSource());
// Resulting SAX events (the generated FO) must be piped through to FOP
Result res = new SAXResult(fop.getDefaultHandler());
// Start XSLT transformation and FOP processing
transformer.transform(src, res);
} catch (Exception e) {
throw new FOPException(e);
}
}
}
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