| 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; | |
| e76d49 | 21 | import com.sun.net.httpserver.HttpContext; |
| 60d3cb | 22 | import com.sun.net.httpserver.HttpExchange; |
| U | 23 | import de.uhilger.neon.FileServer; |
| 6700d1 | 24 | import de.uhilger.neon.HttpHelper; |
| 60d3cb | 25 | import java.io.File; |
| U | 26 | import java.io.IOException; |
| e76d49 | 27 | import java.net.URI; |
| 60d3cb | 28 | |
| U | 29 | /** |
| 30 | * AdocFilter prueft, ob fuer eine Asciidoctor-Quelldatei bereits eine HTML-Version vorliegt. Wenn | |
| 31 | * nicht, verwendet der AdocFilter den AdocActor, um eine HTML-Version zu erzeugen. | |
| 32 | * | |
| 33 | * @author Ulrich Hilger | |
| 34 | * @version 1, 16.06.2021 | |
| 35 | */ | |
| 36 | public class AdocFilter extends Filter { | |
| 37 | ||
| 38 | @Override | |
| 39 | public void doFilter(HttpExchange exchange, Chain chain) throws IOException { | |
| e76d49 | 40 | URI uri = exchange.getRequestURI(); |
| 6700d1 | 41 | try { |
| cf1737 | 42 | String fileName = new HttpHelper().getFileName(exchange); |
| U | 43 | if(fileName.endsWith(".adoc")) { |
| 6700d1 | 44 | HttpContext ctx = exchange.getHttpContext(); |
| U | 45 | String fileBase = ctx.getAttributes().get(FileServer.ATTR_FILE_BASE).toString(); |
| 46 | String query = uri.getQuery(); | |
| 47 | if (query instanceof String && query.contains("pdf=true")) { | |
| 48 | processAdocFile(new File(fileBase, fileName), true); | |
| 49 | } else { | |
| 50 | processAdocFile(new File(fileBase, fileName), false); | |
| 51 | } | |
| 60d3cb | 52 | } |
| 6700d1 | 53 | } catch (IllegalArgumentException ex) { |
| U | 54 | // ungueltiger Dateiname, keine Transformation noetig, also tue nichts |
| 55 | } finally { | |
| 56 | chain.doFilter(exchange); | |
| 60d3cb | 57 | } |
| 6700d1 | 58 | |
| 60d3cb | 59 | } |
| U | 60 | |
| 61 | /** | |
| 62 | * Eine Asciidoc-Quelldatei nach HTML und optional PDF transformieren, sofern | |
| 63 | * eine HTML-Datei noch nicht existiert oder die HTML-Datei aelter ist, als | |
| 64 | * die Asciidoc-Quelldatei | |
| 65 | * | |
| 66 | * @param adocfile das Objekt, das auf die Quelldatei im Asciidoc-Format verweist | |
| 67 | * @param createPdf true, wenn auch nach PDF transformiert werden soll, | |
| 68 | * sonst wird nur nach HTML transformiert | |
| 69 | */ | |
| 70 | private void processAdocFile(File adocfile, boolean createPdf) { | |
| 71 | String absname = adocfile.getAbsolutePath(); | |
| 72 | File htmlfile = getTargetFile(adocfile, "html"); | |
| 73 | AdocWorker worker = null; | |
| 74 | if(!htmlfile.exists() || adocfile.lastModified() > htmlfile.lastModified()) { | |
| 75 | worker = new AdocWorker(); | |
| 76 | worker.transform(absname); | |
| 77 | } | |
| 78 | if(createPdf) { | |
| 79 | String pdfStr = "pdf"; | |
| 80 | File pdffile = getTargetFile(adocfile, pdfStr); | |
| 81 | if(!pdffile.exists() || adocfile.lastModified() > pdffile.lastModified()) { | |
| 82 | if(!(worker instanceof AdocWorker)) { | |
| 83 | worker = new AdocWorker(); | |
| 84 | } | |
| 85 | worker.transform(absname, pdfStr); | |
| 86 | } | |
| 87 | } | |
| 88 | } | |
| 89 | ||
| 90 | public File getTargetFile(File adocfile, String ext) { | |
| 91 | String dot = "."; | |
| 92 | String nameext = adocfile.getName(); | |
| 93 | String fname = nameext.substring(0, nameext.lastIndexOf(dot)); | |
| 94 | File outfile = new File(adocfile.getParentFile(), fname + dot + ext); | |
| 95 | return outfile; | |
| 96 | } | |
| 97 | ||
| 98 | @Override | |
| 99 | public String description() { | |
| 100 | return "Asciidoctor Filter"; | |
| 101 | } | |
| 102 | } | |
