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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 embedding;
-
- // Java
- import java.io.BufferedOutputStream;
- import java.io.BufferedReader;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.OutputStream;
-
- //JAXP
- import javax.xml.transform.Transformer;
- import javax.xml.transform.TransformerException;
- import javax.xml.transform.TransformerFactory;
- import javax.xml.transform.Source;
- import javax.xml.transform.Result;
- import javax.xml.transform.stream.StreamSource;
- import javax.xml.transform.sax.SAXResult;
-
- // FOP
- import org.apache.commons.io.IOUtils;
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.apps.Fop;
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.apps.FopFactory;
- import org.apache.fop.apps.FormattingResults;
- import org.apache.fop.apps.MimeConstants;
- import org.apache.fop.apps.PageSequenceResults;
-
- /**
- * This class demonstrates the conversion of multiple FO files to PDF using FOP.
- * The FopFactory is reused. Its configuration is applied to each rendering run.
- * The FOUserAgent and Fop are newly created by the FopFactory for each run.
- * The FOUserAgent can be configured differently for each run.
- */
- public class MultipleFO2PDF {
-
- // configure fopFactory as desired
- private FopFactory fopFactory = FopFactory.newInstance();
-
- // JAXP TransformerFactory can be reused, too
- private TransformerFactory factory = TransformerFactory.newInstance();
-
- /**
- * Converts an FO file to a PDF file using FOP
- * @param fo the FO file
- * @param pdf the target PDF file
- * @throws TransformerException in case of a transformation problem
- * @throws IOException in case of an I/O problem
- * @throws FOPException in case of a FOP problem
- * @return the formatting results of the run
- */
- public FormattingResults convertFO2PDF(File fo, File pdf)
- throws TransformerException, IOException, FOPException {
-
- OutputStream out = null;
- Fop fop;
-
- try {
- FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
- // configure foUserAgent as desired
-
- // Setup output stream. Note: Using BufferedOutputStream
- // for performance reasons (helpful with FileOutputStreams).
- out = new FileOutputStream(pdf);
- out = new BufferedOutputStream(out);
-
- // Construct fop with desired output format and output stream
- fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, out);
-
- // Setup JAXP using identity transformer
- Transformer transformer = factory.newTransformer(); // identity transformer
-
- // Setup input stream
- Source src = new StreamSource(fo);
-
- // 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);
- } finally {
- IOUtils.closeQuietly(out);
- }
-
- return fop.getResults();
- }
-
- /**
- * Listens on standard in for names of fo files to be transformed to pdf.
- * 'quit' or the null string (for piped input) cause the listener to stop listening.
- */
- public void listen() {
-
- //Setup directories
- File baseDir = new File(".");
- File outDir = new File(baseDir, "out");
- outDir.mkdirs();
- BufferedReader in = new BufferedReader(new java.io.InputStreamReader(System.in));
-
- while (true) {
- try {
- // Listen for the input file name
- System.out.print("Input XSL-FO file ('quit' to stop): ");
- String foname = in.readLine();
- if (foname == null) {
- System.out.println("Null input, quitting");
- return;
- }
- foname.trim();
- if (foname.equals("quit")) {
- System.out.println("Quitting");
- return;
- }
- File fofile = new File(baseDir, foname);
- String pdfname = foname;
- int p = foname.lastIndexOf('.');
- pdfname = foname.substring(0, p) + ".pdf";
- File pdffile = new File(outDir, pdfname);
-
- // transform and render
- System.out.print("Transforming " + fofile + " to PDF file " + pdffile + "...");
- FormattingResults foResults = convertFO2PDF(fofile, pdffile);
- System.out.println("done!");
-
- // Result processing
- java.util.List pageSequences = foResults.getPageSequences();
- for (java.util.Iterator it = pageSequences.iterator(); it.hasNext();) {
- PageSequenceResults pageSequenceResults = (PageSequenceResults)it.next();
- System.out.println("PageSequence "
- + (String.valueOf(pageSequenceResults.getID()).length() > 0
- ? pageSequenceResults.getID() : "<no id>")
- + " generated " + pageSequenceResults.getPageCount() + " pages.");
- }
- System.out.println("Generated " + foResults.getPageCount() + " pages in total.");
-
- } catch (Exception e) {
- System.out.println("failure!");
- e.printStackTrace(System.out);
- } finally {
- System.out.println("");
- }
- }
- }
-
- /**
- * Main method. Set up the listener.
- * @param args command-line arguments
- */
- public static void main(String[] args) {
- System.out.println("FOP MultipleFO2PDF\n");
- System.out.println("Preparing...");
- MultipleFO2PDF m = new MultipleFO2PDF();
- m.listen();
- }
-
- }
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