From 1385d2dd22c7bf8189c68a876037779555a22443 Mon Sep 17 00:00:00 2001
From: ulrich <ulrich@ulrich-vaio>
Date: Thu, 16 Apr 2020 07:56:12 +0000
Subject: [PATCH] Asciidoctor Servlet eingebaut
---
src/de/uhilger/wbx/web/AdocServlet.java | 174 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 174 insertions(+), 0 deletions(-)
diff --git a/src/de/uhilger/wbx/web/AdocServlet.java b/src/de/uhilger/wbx/web/AdocServlet.java
new file mode 100644
index 0000000..7b219b6
--- /dev/null
+++ b/src/de/uhilger/wbx/web/AdocServlet.java
@@ -0,0 +1,174 @@
+/*
+ WebBox - Dein Server.
+ Copyright (C) 2020 Ulrich Hilger, http://uhilger.de
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package de.uhilger.wbx.web;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.PrintWriter;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.Map;
+
+import static org.asciidoctor.AttributesBuilder.attributes;
+import static org.asciidoctor.OptionsBuilder.options;
+import static org.asciidoctor.Asciidoctor.Factory.create;
+import org.asciidoctor.Asciidoctor;
+
+
+
+/**
+ * Das AdocServlet wandelt AsciiDoc-Inhalte (*.adoc)
+ * zu HTML-Seiten
+ *
+ */
+public class AdocServlet extends HttpServlet {
+
+ private static final String DOT = ".";
+ private static final String HTMLEXT = ".html";
+
+ /**
+ * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
+ * methods.
+ *
+ * @param request servlet request
+ * @param response servlet response
+ * @throws ServletException if a servlet-specific error occurs
+ * @throws IOException if an I/O error occurs
+ */
+ protected void processRequest(HttpServletRequest request, HttpServletResponse response)
+ throws ServletException, IOException
+ {
+ response.setContentType("text/html;charset=UTF-8");
+ try (PrintWriter out = response.getWriter()) {
+
+ // Asciidoc-Quelldatei aus HTTP-Request ermitteln
+ String vPath = request.getServletPath();
+ String absname = getServletContext().getRealPath(vPath);
+ File adocfile = new File(absname);
+
+ // HTML-Datei ermitteln
+ String nameext = adocfile.getName();
+ String fname = nameext.substring(0, nameext.lastIndexOf(DOT));
+ File htmlfile = new File(adocfile.getParentFile(), fname + HTMLEXT);
+
+ /*
+ transformieren, wenn die Quelle sich geandert hat oder
+ die HTML-Datei noch nicht existiert
+ */
+ if(!htmlfile.exists() || adocfile.lastModified() > htmlfile.lastModified()) {
+ transform(absname);
+ }
+
+ FileInputStream in = new FileInputStream(htmlfile);
+ BufferedReader reader = new BufferedReader(new InputStreamReader(in));
+ String line;
+ while ((line = reader.readLine()) != null) {
+ out.println(line);
+ }
+ }
+ }
+
+ private void transform(String absoluteFileName) {
+ Asciidoctor asciidoctor = create();
+ Map<String, Object> attributes = attributes()
+ .noFooter(false)
+ //.tableOfContents(true)
+ //.sectionNumbers(true)
+ .asMap();
+ Map<String, Object> options = options().inPlace(false)
+ .attributes(attributes)
+ .asMap();
+ asciidoctor.convertFile(new File(absoluteFileName), options);
+ }
+
+ private void test(HttpServletRequest request, HttpServletResponse response)
+ throws IOException
+ {
+ response.setContentType("text/html;charset=UTF-8");
+ try (PrintWriter out = response.getWriter()) {
+ /* TODO output your page here. You may use following sample code. */
+ out.println("<!DOCTYPE html>");
+ out.println("<html>");
+ out.println("<head>");
+ out.println("<title>Servlet AdocServlet</title>");
+ out.println("</head>");
+ out.println("<body>");
+ out.println("<h1>Servlet AdocServlet at " + request.getContextPath() + "</h1>");
+
+ out.println("<p>request.getRequestURI(): " + request.getRequestURI() + "</p>");
+ out.println("<p>request.getRequestURL(): " + request.getRequestURL() + "</p>");
+ out.println("<p>request.getServletPath(): " + request.getServletPath() + "</p>");
+ out.println("<p>request.getPathInfo(): " + request.getPathInfo() + "</p>");
+
+ String vPath = request.getServletPath();
+ out.println("<p>vPath: " + vPath);
+ out.println("<p>getServletContext().getRealPath(vPath): " +
+ getServletContext().getRealPath(vPath) + "</p>");
+
+ out.println("</body>");
+ out.println("</html>");
+ }
+
+ }
+
+ // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
+ /**
+ * Handles the HTTP <code>GET</code> method.
+ *
+ * @param request servlet request
+ * @param response servlet response
+ * @throws ServletException if a servlet-specific error occurs
+ * @throws IOException if an I/O error occurs
+ */
+ @Override
+ protected void doGet(HttpServletRequest request, HttpServletResponse response)
+ throws ServletException, IOException {
+ processRequest(request, response);
+ }
+
+ /**
+ * Handles the HTTP <code>POST</code> method.
+ *
+ * @param request servlet request
+ * @param response servlet response
+ * @throws ServletException if a servlet-specific error occurs
+ * @throws IOException if an I/O error occurs
+ */
+ @Override
+ protected void doPost(HttpServletRequest request, HttpServletResponse response)
+ throws ServletException, IOException {
+ processRequest(request, response);
+ }
+
+ /**
+ * Returns a short description of the servlet.
+ *
+ * @return a String containing servlet description
+ */
+ @Override
+ public String getServletInfo() {
+ return "AdocServlet";
+ }// </editor-fold>
+
+}
--
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