001    /*
002     * Copyright 2007 - 2009 JEuclid, http://jeuclid.sf.net
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     *      http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    /* $Id: Servlet3.java,v 92549dfb4024 2009/09/01 09:06:26 max $ */
018    
019    package net.sourceforge.jeuclid.testsuite;
020    
021    import java.io.IOException;
022    import java.io.InputStream;
023    import java.io.OutputStream;
024    
025    import javax.servlet.ServletException;
026    import javax.servlet.http.HttpServlet;
027    import javax.servlet.http.HttpServletRequest;
028    import javax.servlet.http.HttpServletResponse;
029    import javax.xml.transform.Result;
030    import javax.xml.transform.Source;
031    import javax.xml.transform.stream.StreamResult;
032    import javax.xml.transform.stream.StreamSource;
033    
034    /**
035     * Serve the W3C MathML Testsuite v3, rendering all formulas with JEuclid to
036     * SVG.
037     * 
038     * @version $Revision: 92549dfb4024 $
039     */
040    public class Servlet3 extends HttpServlet {
041    
042        private static final int BLOCK_SIZE = 4096;
043    
044        /**
045         * 
046         */
047        private static final long serialVersionUID = 1L;
048    
049        private static final TestSuiteProcessor TSP = TestSuiteProcessor
050                .getInstance();
051    
052        /**
053         * Default Constructor.
054         */
055        public Servlet3() {
056        }
057    
058        /** {@inheritDoc} */
059        @Override
060        protected void doGet(final HttpServletRequest req,
061                final HttpServletResponse resp) throws ServletException,
062                IOException {
063            final String file = req.getPathInfo();
064            final InputStream stream = Thread.currentThread()
065                    .getContextClassLoader().getResourceAsStream(
066                            "mml3-testsuite/" + file);
067            if (stream == null) {
068                resp.sendError(HttpServletResponse.SC_NOT_FOUND, file);
069            } else {
070                final OutputStream out = resp.getOutputStream();
071    
072                boolean processed = false;
073                if (file.endsWith(".xhtml")) {
074                    final Source inputSource = new StreamSource(stream);
075                    final Result result = new StreamResult(out);
076                    processed = Servlet3.TSP.process(inputSource, result, true);
077                }
078                if (!processed) {
079                    final byte[] buf = new byte[Servlet3.BLOCK_SIZE];
080                    int count = stream.read(buf);
081                    while (count > -1) {
082                        out.write(buf, 0, count);
083                        count = stream.read(buf);
084                    }
085                }
086            }
087        }
088    
089    }