package com.zetcode;

import org.apache.fop.apps.FOPException;

import org.apache.fop.apps.FopFactory;

import org.apache.xmlgraphics.util.MimeConstants;

import javax.xml.transform.TransformerException;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.sax.SAXResult;

import javax.xml.transform.stream.StreamSource;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

public class JavaXLsfoEx {

public static void main(String[] args) throws FOPException, TransformerException, IOException {

// XSL FO file

var xsltFile = new File("src/main/resources/stylesheet.xsl");

// input XML file

var xmlSource = new StreamSource(new File("src/main/resources/contacts.xml"));

// create an instance of FOP factory

var fopFactory = FopFactory.newInstance(new File(".").toURI());

// a user agent is needed for transformation

var foUserAgent = fopFactory.newFOUserAgent();

try(var os = new FileOutputStream("src/main/resources/output.pdf")) {

// Construct FOP with desired output format

var fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, os);

// Setup XSLT

var factory = TransformerFactory.newInstance();

var transformer = factory.newTransformer(new StreamSource(xsltFile));

// Resulting SAX events (the generated FO) must be piped through to FOP

var result = new SAXResult(fop.getDefaultHandler());

// Start XSLT transformation and FOP processing

// That's where the XML is first transformed to XSL-FO and then

// PDF is created

transformer.transform(xmlSource, result);

}

}

}