| commit | author | age | ||
| 1385d2 | 1 | /* |
| U | 2 | WebBox - Dein Server. |
| 3 | Copyright (C) 2020 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 | ||
| 19 | package de.uhilger.wbx.web; | |
| 20 | ||
| 21 | import java.io.BufferedReader; | |
| 22 | import java.io.File; | |
| 23 | import java.io.FileInputStream; | |
| 24 | import java.io.IOException; | |
| 25 | import java.io.InputStreamReader; | |
| 26 | import java.io.PrintWriter; | |
| 27 | import javax.servlet.ServletException; | |
| 28 | import javax.servlet.http.HttpServlet; | |
| 29 | import javax.servlet.http.HttpServletRequest; | |
| 30 | import javax.servlet.http.HttpServletResponse; | |
| 31 | import java.util.Map; | |
| 32 | ||
| 33 | import static org.asciidoctor.AttributesBuilder.attributes; | |
| 34 | import static org.asciidoctor.OptionsBuilder.options; | |
| 35 | import static org.asciidoctor.Asciidoctor.Factory.create; | |
| 36 | import org.asciidoctor.Asciidoctor; | |
| 37 | ||
| 38 | ||
| 39 | ||
| 40 | /** | |
| 41 | * Das AdocServlet wandelt AsciiDoc-Inhalte (*.adoc) | |
| 42 | * zu HTML-Seiten | |
| 43 | * | |
| 44 | */ | |
| 45 | public class AdocServlet extends HttpServlet { | |
| 46 | ||
| 47 | private static final String DOT = "."; | |
| 48 | private static final String HTMLEXT = ".html"; | |
| 49 | ||
| 50 | /** | |
| 51 | * Processes requests for both HTTP <code>GET</code> and <code>POST</code> | |
| 52 | * methods. | |
| 53 | * | |
| 54 | * @param request servlet request | |
| 55 | * @param response servlet response | |
| 56 | * @throws ServletException if a servlet-specific error occurs | |
| 57 | * @throws IOException if an I/O error occurs | |
| 58 | */ | |
| 59 | protected void processRequest(HttpServletRequest request, HttpServletResponse response) | |
| 60 | throws ServletException, IOException | |
| 61 | { | |
| 62 | response.setContentType("text/html;charset=UTF-8"); | |
| 63 | try (PrintWriter out = response.getWriter()) { | |
| 64 | ||
| 65 | // Asciidoc-Quelldatei aus HTTP-Request ermitteln | |
| 66 | String vPath = request.getServletPath(); | |
| 67 | String absname = getServletContext().getRealPath(vPath); | |
| 68 | File adocfile = new File(absname); | |
| 69 | ||
| 70 | // HTML-Datei ermitteln | |
| 71 | String nameext = adocfile.getName(); | |
| 72 | String fname = nameext.substring(0, nameext.lastIndexOf(DOT)); | |
| 73 | File htmlfile = new File(adocfile.getParentFile(), fname + HTMLEXT); | |
| 74 | ||
| 75 | /* | |
| 76 | transformieren, wenn die Quelle sich geandert hat oder | |
| 77 | die HTML-Datei noch nicht existiert | |
| 78 | */ | |
| 79 | if(!htmlfile.exists() || adocfile.lastModified() > htmlfile.lastModified()) { | |
| 80 | transform(absname); | |
| 81 | } | |
| 82 | ||
| 83 | FileInputStream in = new FileInputStream(htmlfile); | |
| 84 | BufferedReader reader = new BufferedReader(new InputStreamReader(in)); | |
| 85 | String line; | |
| 86 | while ((line = reader.readLine()) != null) { | |
| 87 | out.println(line); | |
| 88 | } | |
| 89 | } | |
| 90 | } | |
| 91 | ||
| 92 | private void transform(String absoluteFileName) { | |
| 93 | Asciidoctor asciidoctor = create(); | |
| 94 | Map<String, Object> attributes = attributes() | |
| 95 | .noFooter(false) | |
| 96 | //.tableOfContents(true) | |
| 97 | //.sectionNumbers(true) | |
| 98 | .asMap(); | |
| 99 | Map<String, Object> options = options().inPlace(false) | |
| 100 | .attributes(attributes) | |
| 101 | .asMap(); | |
| 102 | asciidoctor.convertFile(new File(absoluteFileName), options); | |
| 103 | } | |
| 104 | ||
| 105 | private void test(HttpServletRequest request, HttpServletResponse response) | |
| 106 | throws IOException | |
| 107 | { | |
| 108 | response.setContentType("text/html;charset=UTF-8"); | |
| 109 | try (PrintWriter out = response.getWriter()) { | |
| 110 | /* TODO output your page here. You may use following sample code. */ | |
| 111 | out.println("<!DOCTYPE html>"); | |
| 112 | out.println("<html>"); | |
| 113 | out.println("<head>"); | |
| 114 | out.println("<title>Servlet AdocServlet</title>"); | |
| 115 | out.println("</head>"); | |
| 116 | out.println("<body>"); | |
| 117 | out.println("<h1>Servlet AdocServlet at " + request.getContextPath() + "</h1>"); | |
| 118 | ||
| 119 | out.println("<p>request.getRequestURI(): " + request.getRequestURI() + "</p>"); | |
| 120 | out.println("<p>request.getRequestURL(): " + request.getRequestURL() + "</p>"); | |
| 121 | out.println("<p>request.getServletPath(): " + request.getServletPath() + "</p>"); | |
| 122 | out.println("<p>request.getPathInfo(): " + request.getPathInfo() + "</p>"); | |
| 123 | ||
| 124 | String vPath = request.getServletPath(); | |
| 125 | out.println("<p>vPath: " + vPath); | |
| 126 | out.println("<p>getServletContext().getRealPath(vPath): " + | |
| 127 | getServletContext().getRealPath(vPath) + "</p>"); | |
| 128 | ||
| 129 | out.println("</body>"); | |
| 130 | out.println("</html>"); | |
| 131 | } | |
| 132 | ||
| 133 | } | |
| 134 | ||
| 135 | // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> | |
| 136 | /** | |
| 137 | * Handles the HTTP <code>GET</code> method. | |
| 138 | * | |
| 139 | * @param request servlet request | |
| 140 | * @param response servlet response | |
| 141 | * @throws ServletException if a servlet-specific error occurs | |
| 142 | * @throws IOException if an I/O error occurs | |
| 143 | */ | |
| 144 | @Override | |
| 145 | protected void doGet(HttpServletRequest request, HttpServletResponse response) | |
| 146 | throws ServletException, IOException { | |
| 147 | processRequest(request, response); | |
| 148 | } | |
| 149 | ||
| 150 | /** | |
| 151 | * Handles the HTTP <code>POST</code> method. | |
| 152 | * | |
| 153 | * @param request servlet request | |
| 154 | * @param response servlet response | |
| 155 | * @throws ServletException if a servlet-specific error occurs | |
| 156 | * @throws IOException if an I/O error occurs | |
| 157 | */ | |
| 158 | @Override | |
| 159 | protected void doPost(HttpServletRequest request, HttpServletResponse response) | |
| 160 | throws ServletException, IOException { | |
| 161 | processRequest(request, response); | |
| 162 | } | |
| 163 | ||
| 164 | /** | |
| 165 | * Returns a short description of the servlet. | |
| 166 | * | |
| 167 | * @return a String containing servlet description | |
| 168 | */ | |
| 169 | @Override | |
| 170 | public String getServletInfo() { | |
| 171 | return "AdocServlet"; | |
| 172 | }// </editor-fold> | |
| 173 | ||
| 174 | } | |
