| commit | author | age | ||
| 60d3cb | 1 | /* |
| U | 2 | neon-adoc - Asciidoctor extensions to Neon |
| 3 | Copyright (C) 2024 Ulrich Hilger | |
| 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 <https://www.gnu.org/licenses/>. | |
| 17 | */ | |
| 18 | package de.uhilger.neon.adoc; | |
| 19 | ||
| 20 | import com.sun.net.httpserver.Filter; | |
| 21 | import com.sun.net.httpserver.HttpExchange; | |
| 22 | import de.uhilger.neon.FileServer; | |
| 23 | import java.io.File; | |
| 24 | import java.io.IOException; | |
| 25 | ||
| 26 | /** | |
| 27 | * AdocFilter prueft, ob fuer eine Asciidoctor-Quelldatei bereits eine HTML-Version vorliegt. Wenn | |
| 28 | * nicht, verwendet der AdocFilter den AdocActor, um eine HTML-Version zu erzeugen. | |
| 29 | * | |
| 30 | * @author Ulrich Hilger | |
| 31 | * @version 1, 16.06.2021 | |
| 32 | */ | |
| 33 | public class AdocFilter extends Filter { | |
| 34 | ||
| 35 | @Override | |
| 36 | public void doFilter(HttpExchange exchange, Chain chain) throws IOException { | |
| 37 | String fileBase = exchange.getHttpContext().getAttributes() | |
| 38 | .get(FileServer.ATTR_FILE_BASE).toString(); | |
| 39 | String fileName = exchange | |
| 40 | .getRequestURI() | |
| 41 | .getPath() | |
| 42 | .substring(exchange | |
| 43 | .getHttpContext() | |
| 44 | .getPath() | |
| 45 | .length()); | |
| 46 | if(fileName.endsWith(".adoc")) { | |
| 47 | String query = exchange.getRequestURI().getQuery(); | |
| 48 | if (query instanceof String && query.contains("pdf=true")) { | |
| 49 | processAdocFile(new File(fileBase, fileName), true); | |
| 50 | } else { | |
| 51 | processAdocFile(new File(fileBase, fileName), false); | |
| 52 | } | |
| 53 | } | |
| 54 | chain.doFilter(exchange); | |
| 55 | } | |
| 56 | ||
| 57 | /** | |
| 58 | * Eine Asciidoc-Quelldatei nach HTML und optional PDF transformieren, sofern | |
| 59 | * eine HTML-Datei noch nicht existiert oder die HTML-Datei aelter ist, als | |
| 60 | * die Asciidoc-Quelldatei | |
| 61 | * | |
| 62 | * @param adocfile das Objekt, das auf die Quelldatei im Asciidoc-Format verweist | |
| 63 | * @param createPdf true, wenn auch nach PDF transformiert werden soll, | |
| 64 | * sonst wird nur nach HTML transformiert | |
| 65 | */ | |
| 66 | private void processAdocFile(File adocfile, boolean createPdf) { | |
| 67 | String absname = adocfile.getAbsolutePath(); | |
| 68 | File htmlfile = getTargetFile(adocfile, "html"); | |
| 69 | AdocWorker worker = null; | |
| 70 | if(!htmlfile.exists() || adocfile.lastModified() > htmlfile.lastModified()) { | |
| 71 | worker = new AdocWorker(); | |
| 72 | worker.transform(absname); | |
| 73 | } | |
| 74 | if(createPdf) { | |
| 75 | String pdfStr = "pdf"; | |
| 76 | File pdffile = getTargetFile(adocfile, pdfStr); | |
| 77 | if(!pdffile.exists() || adocfile.lastModified() > pdffile.lastModified()) { | |
| 78 | if(!(worker instanceof AdocWorker)) { | |
| 79 | worker = new AdocWorker(); | |
| 80 | } | |
| 81 | worker.transform(absname, pdfStr); | |
| 82 | } | |
| 83 | } | |
| 84 | } | |
| 85 | ||
| 86 | public File getTargetFile(File adocfile, String ext) { | |
| 87 | String dot = "."; | |
| 88 | String nameext = adocfile.getName(); | |
| 89 | String fname = nameext.substring(0, nameext.lastIndexOf(dot)); | |
| 90 | File outfile = new File(adocfile.getParentFile(), fname + dot + ext); | |
| 91 | return outfile; | |
| 92 | } | |
| 93 | ||
| 94 | @Override | |
| 95 | public String description() { | |
| 96 | return "Asciidoctor Filter"; | |
| 97 | } | |
| 98 | } | |
