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The MyFaces Commons Subproject provides base classes for usage in both the MyFaces implementation and the MyFaces Tomahawk components. This is also a general set of utility classes for usage in your JSF projects independent of the implementation you might be deciding upon.

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/*
 * Copyright 2005 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.
 */
 
package org.apache.myfaces.util.servlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;

public class SourceCodeServlet extends HttpServlet 
{
    public void doGet(HttpServletRequest req, HttpServletResponse res)
        throws IOException, ServletException
    {
        String webPage = req.getServletPath();
        
        // remove the '*.source' suffix that maps to this servlet
        int chopPoint = webPage.indexOf(".source");
        
        webPage = webPage.substring(0, chopPoint - 1);
        webPage += "p"; // replace jsf with jsp
        
        // get the actual file location of the requested resource
        String realPath = getServletConfig().getServletContext().getRealPath(webPage);

        // output an HTML page
        res.setContentType("text/plain");

        // print some html
        ServletOutputStream out = res.getOutputStream();

        // print the file
        InputStream in = null;
        try 
        {
            in = new BufferedInputStream(new FileInputStream(realPath));
            int ch;
            while ((ch = in.read()) !=-1) 
            {
                out.print((char)ch);
            }
        }
        finally {
            if (in != null) in.close();  // very important
        }
    }
}