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1   /**
2    * This file Copyright (c) 2008-2011 Magnolia International
3    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
4    *
5    *
6    * This file is dual-licensed under both the Magnolia
7    * Network Agreement and the GNU General Public License.
8    * You may elect to use one or the other of these licenses.
9    *
10   * This file is distributed in the hope that it will be
11   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12   * implied warranty of MERCHANTABILITY or FITNESS FOR A
13   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14   * Redistribution, except as permitted by whichever of the GPL
15   * or MNA you select, is prohibited.
16   *
17   * 1. For the GPL license (GPL), you can redistribute and/or
18   * modify this file under the terms of the GNU General
19   * Public License, Version 3, as published by the Free Software
20   * Foundation.  You should have received a copy of the GNU
21   * General Public License, Version 3 along with this program;
22   * if not, write to the Free Software Foundation, Inc., 51
23   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24   *
25   * 2. For the Magnolia Network Agreement (MNA), this file
26   * and the accompanying materials are made available under the
27   * terms of the MNA which accompanies this distribution, and
28   * is available at http://www.magnolia-cms.com/mna.html
29   *
30   * Any modifications to this file must keep this entire header
31   * intact.
32   *
33   */
34  package info.magnolia.module.samples.servlets;
35  
36  import info.magnolia.cms.util.ClasspathResourcesUtil;
37  import org.apache.commons.io.IOUtils;
38  
39  import javax.servlet.ServletException;
40  import javax.servlet.ServletOutputStream;
41  import javax.servlet.http.HttpServlet;
42  import javax.servlet.http.HttpServletRequest;
43  import javax.servlet.http.HttpServletResponse;
44  import java.io.IOException;
45  import java.io.InputStream;
46  
47  /**
48   * This servlet is used to download the sources of the files used for the samples module,
49   * classes and templates.
50   * @author tmiyar
51   */
52  public class DisplaySamplesSourcesServlet extends HttpServlet {
53  
54      /**
55       *
56       */
57      private static final long serialVersionUID = 1L;
58  
59      protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
60          doGet(request, response);
61      }
62  
63      protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
64          response.setContentType("text/plain; charset=UTF-8");
65  
66          final String path = request.getPathInfo();
67          final String resourcePath;
68          if (path.endsWith(".jsp")) {
69              resourcePath = "/mgnl-files/templates/samples" + path;
70          } else if (path.endsWith(".ftl")) {
71              resourcePath = "/samples" + path;
72          } else {
73              throw new IllegalArgumentException("Filetype not handled: " + path);
74          }
75  
76          final InputStream stream = ClasspathResourcesUtil.getStream(resourcePath);
77          if (stream == null) {
78              throw new IllegalArgumentException("Can't find resource: " + resourcePath);
79          }
80  
81          final ServletOutputStream out = response.getOutputStream();
82  
83          try {
84              IOUtils.copy(stream, out);
85          } finally {
86              stream.close();
87              out.flush();
88              out.close();
89          }
90      }
91  }