| commit | author | age | ||
| 2ef1bb | 1 | /* |
| U | 2 | WebBox - Dein Server. |
| 3 | Copyright (C) 2017 Ulrich Hilger, http://uhilger.de | |
| 4 | ||
| 5 | This program is free software: you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU Affero General Public License as | |
| 7 | published by the Free Software Foundation, either version 3 of the | |
| 8 | License, or (at your option) any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU Affero General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Affero General Public License | |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 | */ | |
| 18 | package de.uhilger.wbx.web; | |
| 19 | ||
| 20 | import com.github.rjeschke.txtmark.Processor; | |
| 21 | import java.io.IOException; | |
| 22 | import java.io.OutputStream; | |
| 23 | import java.util.logging.Logger; | |
| 24 | import javax.servlet.FilterChain; | |
| 25 | import javax.servlet.FilterConfig; | |
| 26 | import javax.servlet.ServletException; | |
| 27 | import javax.servlet.ServletRequest; | |
| 28 | import javax.servlet.ServletResponse; | |
| 29 | import javax.servlet.http.HttpServletRequest; | |
| 30 | import javax.servlet.http.HttpServletResponse; | |
| 31 | import org.markdown4j.Markdown4jProcessor; | |
| 32 | ||
| 33 | ||
| 34 | /** | |
| 35 | * Ein Filter zur Verwandlung von Markdown-Text in HTML | |
| 36 | * | |
| 37 | * @author ulrich | |
| 38 | */ | |
| 39 | public class MarkdownFilter implements javax.servlet.Filter { | |
| 40 | ||
| 41 | private static final Logger logger = Logger.getLogger(MarkdownFilter.class.getName()); | |
| 42 | private static final String EXT_MD = ".md"; | |
| 43 | public FilterConfig filterConfig; | |
| 44 | ||
| 45 | @Override | |
| 46 | public void doFilter(final ServletRequest request, | |
| 47 | final ServletResponse response, | |
| 48 | FilterChain chain) | |
| 49 | throws IOException, ServletException { | |
| 50 | response.setCharacterEncoding("UTF-8"); | |
| 51 | HttpServletRequest hr = (HttpServletRequest) request; | |
| 52 | String servletPath = hr.getServletPath(); | |
| 53 | if(servletPath.toLowerCase().endsWith(EXT_MD)) { | |
| 54 | OutputStream out = response.getOutputStream(); | |
| 55 | //out.write(new String("<HR>PRE<HR>").getBytes()); | |
| 56 | GenericResponseWrapper wrapper | |
| 57 | = new GenericResponseWrapper((HttpServletResponse) response); | |
| 58 | wrapper.setCharacterEncoding("UTF-8"); | |
| 59 | //wrapper.setContentLength(100000); | |
| 60 | chain.doFilter(request, wrapper); | |
| 61 | ||
| 62 | String responseContent = new String(wrapper.getData(), "UTF-8"); | |
| 63 | ||
| 64 | String html = new Markdown4jProcessor().process(responseContent); | |
| 65 | //String result = Processor.process(responseContent); | |
| 66 | ||
| 67 | out.write(html.getBytes()); | |
| 68 | //out.write(new String("<HR>POST<HR>").getBytes()); | |
| 69 | out.close(); | |
| 70 | } else { | |
| 71 | chain.doFilter(request, response); | |
| 72 | } | |
| 73 | /* | |
| 74 | logger.info("requestURL: " + hr.getRequestURL().toString()); | |
| 75 | logger.info("ContextPath: " + hr.getContextPath()); | |
| 76 | logger.info("ServletPath: " + hr.getServletPath()); | |
| 77 | logger.info("PathInfo: " + hr.getPathInfo()); | |
| 78 | */ | |
| 79 | } | |
| 80 | ||
| 81 | @Override | |
| 82 | public void init(FilterConfig filterConfig) throws ServletException { | |
| 83 | this.filterConfig = filterConfig; | |
| 84 | } | |
| 85 | ||
| 86 | @Override | |
| 87 | public void destroy() { | |
| 88 | // .. | |
| 89 | } | |
| 90 | ||
| 91 | } | |
