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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.junit.BeforeClass;
import org.junit.Test;
import org.w3c.dom.Document;
import org.apache.commons.io.IOUtils;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.apache.xpath.XPathAPI;
import org.apache.xpath.objects.XObject;
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.FopFactoryBuilder;
import org.apache.fop.apps.MimeConstants;
import org.apache.fop.apps.io.Resource;
import org.apache.fop.apps.io.ResourceResolver;
import org.apache.fop.apps.io.ResourceResolverFactory;
import org.apache.fop.render.xml.XMLRenderer;
import static org.apache.fop.FOPTestUtils.getBaseDir;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* Tests URI resolution facilities.
*/
public class URIResolutionTestCase {
private SAXTransformerFactory tfactory = (SAXTransformerFactory) SAXTransformerFactory.newInstance();
private static final File BACKUP_DIR = new File(getBaseDir(), "build/test-results");
private static FopFactory fopFactory;
@BeforeClass
public static void makeDirs() {
BACKUP_DIR.mkdirs();
fopFactory = new FopFactoryBuilder(new File(".").getAbsoluteFile().toURI(),
new CustomURIResolver()).build();
}
private static File getTestDir() {
return new File(getBaseDir(), "test/xml/uri-testing/");
}
@Test
public void innerTestFO1() throws Exception {
File foFile = new File(getTestDir(), "custom-scheme/only-scheme-specific-part.fo");
FOUserAgent ua = fopFactory.newFOUserAgent();
Document doc = createAreaTree(foFile, ua);
// XPath checking on the area tree
assertEquals("viewport for external-graphic is missing",
"true", evalXPath(doc, "boolean(//flow/block[1]/lineArea/viewport)"));
assertEquals("46080", evalXPath(doc, "//flow/block[1]/lineArea/viewport/@ipd"));
assertEquals("46080", evalXPath(doc, "//flow/block[1]/lineArea/viewport/@bpd"));
}
/**
* Test custom URI resolution with a hand-written URIResolver.
* @throws Exception if anything fails
*/
@Test
public void testFO2() throws Exception {
File foFile = new File(getTestDir(), "custom-scheme/only-scheme-specific-part-svg.fo");
FOUserAgent ua = fopFactory.newFOUserAgent();
ByteArrayOutputStream baout = new ByteArrayOutputStream();
Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, ua, baout);
Transformer transformer = tfactory.newTransformer(); //Identity transf.
Source src = new StreamSource(foFile);
Result res = new SAXResult(fop.getDefaultHandler());
transformer.transform(src, res);
OutputStream out = new java.io.FileOutputStream(
new File(BACKUP_DIR, foFile.getName() + ".pdf"));
try {
baout.writeTo(out);
} finally {
IOUtils.closeQuietly(out);
}
//Test using PDF as the area tree doesn't invoke Batik so we could check
//if the resolver is actually passed to Batik by FOP
assertTrue("Generated PDF has zero length", baout.size() > 0);
}
private Document createAreaTree(File fo, FOUserAgent ua)
throws TransformerException, FOPException {
DOMResult domres = new DOMResult();
//Setup Transformer to convert the area tree to a DOM
TransformerHandler athandler = tfactory.newTransformerHandler();
athandler.setResult(domres);
XMLRenderer atrenderer = new XMLRenderer(ua);
atrenderer.setContentHandler(athandler);
ua.setRendererOverride(atrenderer);
Fop fop = fopFactory.newFop(ua);
Transformer transformer = tfactory.newTransformer(); //Identity transf.
Source src = new StreamSource(fo);
Result res = new SAXResult(fop.getDefaultHandler());
transformer.transform(src, res);
Document doc = (Document) domres.getNode();
saveAreaTreeXML(doc, new File(BACKUP_DIR, fo.getName() + ".at.xml"));
return doc;
}
private String evalXPath(Document doc, String xpath) {
XObject res;
try {
res = XPathAPI.eval(doc, xpath);
} catch (TransformerException e) {
throw new RuntimeException("XPath evaluation failed: " + e.getMessage());
}
return res.str();
}
/**
* Save the area tree XML for later inspection.
* @param doc area tree as a DOM document
* @param target target file
* @throws TransformerException if a problem occurs during serialization
*/
protected void saveAreaTreeXML(Document doc, File target) throws TransformerException {
Transformer transformer = tfactory.newTransformer();
Source src = new DOMSource(doc);
Result res = new StreamResult(target);
transformer.transform(src, res);
}
private static final class CustomURIResolver implements ResourceResolver {
private final ResourceResolver defaultImpl = ResourceResolverFactory.createDefaultResourceResolver();
public Resource getResource(URI uri) throws IOException {
if (uri.getScheme().equals("funky") && uri.getSchemeSpecificPart().equals("myimage123")) {
return new Resource("", new FileInputStream("test/resources/images/bgimg300dpi.jpg"));
}
return defaultImpl.getResource(uri);
}
public OutputStream getOutputStream(URI uri) throws IOException {
return defaultImpl.getOutputStream(uri);
}
}
}
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