| commit | author | age | ||
| 9c5db9 | 1 | /* |
| U | 2 | http-adoc - Asciidoctor extensions to jdk.httpserver |
| 3 | Copyright (C) 2021 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.httpserver.adoc; | |
| 19 | ||
| 20 | import java.io.File; | |
| 21 | import java.util.Map; | |
| 5ca813 | 22 | import java.util.logging.Level; |
| 9c5db9 | 23 | import java.util.logging.Logger; |
| U | 24 | |
| 25 | import static org.asciidoctor.Asciidoctor.Factory.create; | |
| 26 | import org.asciidoctor.Asciidoctor; | |
| 27 | import static org.asciidoctor.AttributesBuilder.attributes; | |
| 28 | import static org.asciidoctor.OptionsBuilder.options; | |
| 29 | import org.asciidoctor.SafeMode; | |
| 30 | ||
| 31 | /** | |
| 32 | * Der AdocActor transformiert den Asciidoctor-Quellcode aus einer | |
| 33 | * gegebenen Datei zu HTML oder PDF und legt das Ergebnis als HTML- oder | |
| 34 | * PDF-Datei ab. | |
| 35 | * | |
| 36 | * Der AdocActor benötigt AsciidoctorJ im Classpath. | |
| 37 | * | |
| 38 | * @author Ulrich Hilger | |
| 39 | * @version 1, 16.06.2021 | |
| 40 | */ | |
| 41 | public class AdocActor { | |
| 42 | ||
| 43 | private static final Logger logger = Logger.getLogger(AdocActor.class.getName()); | |
| 44 | ||
| 45 | private static final String DOT = "."; | |
| 5ca813 | 46 | public static final String HTML = "html"; |
| U | 47 | public static final String PDF = "pdf"; |
| 9c5db9 | 48 | |
| 5ca813 | 49 | public File getTargetFile(File adocfile, String ext) { |
| U | 50 | String nameext = adocfile.getName(); |
| 51 | String fname = nameext.substring(0, nameext.lastIndexOf(DOT)); | |
| 52 | File outfile = new File(adocfile.getParentFile(), fname + DOT + ext); | |
| 53 | logger.log(Level.FINE, "out: {0}", outfile.getAbsolutePath()); | |
| 54 | return outfile; | |
| 55 | } | |
| 9c5db9 | 56 | |
| U | 57 | public void processAdocFile(File adocfile, String pdf) { |
| 58 | ||
| 59 | String absname = adocfile.getAbsolutePath(); | |
| 5ca813 | 60 | logger.log(Level.FINE, "in: {0}", absname); |
| 9c5db9 | 61 | |
| U | 62 | // HTML-Datei ermitteln |
| 5ca813 | 63 | //String nameext = adocfile.getName(); |
| U | 64 | //String fname = nameext.substring(0, nameext.lastIndexOf(DOT)); |
| 65 | //File htmlfile = new File(adocfile.getParentFile(), fname + DOT + HTML); | |
| 66 | //File outfile = htmlfile; // Standardmaessig wird HTML zurueckgegeben | |
| 67 | //logger.fine("out: " + outfile.getAbsolutePath()); | |
| 9c5db9 | 68 | //response.setCharacterEncoding("UTF-8"); |
| 5ca813 | 69 | File outfile = getTargetFile(adocfile, HTML); |
| U | 70 | File htmlfile = outfile; |
| 9c5db9 | 71 | |
| U | 72 | /* |
| 73 | nach HTML transformieren, wenn die Quelle sich geandert hat oder | |
| 74 | die HTML-Datei noch nicht existiert | |
| 75 | */ | |
| 76 | if(!htmlfile.exists() || adocfile.lastModified() > htmlfile.lastModified()) { | |
| 77 | transform(absname); | |
| 78 | } | |
| 79 | ||
| 80 | /* | |
| 81 | nach PDF transformieren, wenn der Parameter pdf=true existiert und | |
| 82 | wenn die Quelle sich geandert hat oder | |
| 83 | die PDF-Datei noch nicht existiert | |
| 84 | */ | |
| 85 | ||
| 86 | if(null != pdf && pdf.equalsIgnoreCase(Boolean.TRUE.toString())) { | |
| 5ca813 | 87 | //File pdffile = new File(adocfile.getParentFile(), fname + DOT + PDF); |
| U | 88 | File pdffile = getTargetFile(adocfile, PDF); |
| 9c5db9 | 89 | outfile = pdffile; // PDF soll zurueckgegeben werden |
| U | 90 | if(!pdffile.exists() || adocfile.lastModified() > pdffile.lastModified()) { |
| 91 | //response.setContentType("application/pdf"); | |
| 92 | transform(absname, PDF); | |
| 93 | } | |
| 94 | //ServletOutputStream os = response.getOutputStream(); | |
| 95 | //InputStream bytes = new FileInputStream(outfile); | |
| 96 | //int b = bytes.read(); | |
| 97 | //while(b > -1 ) { | |
| 98 | // os.write(b); | |
| 99 | // b = bytes.read(); | |
| 100 | //} | |
| 101 | } else { | |
| 102 | //PrintWriter out = response.getWriter(); | |
| 103 | //InputStreamReader in = new InputStreamReader(new FileInputStream(outfile), "UTF-8"); | |
| 104 | //in.transferTo(out); | |
| 105 | } | |
| 106 | } | |
| 107 | ||
| 108 | /** | |
| 109 | * Nach HTML transformieren | |
| 110 | * @param fileName der Dateiname der Quelldatei samt absoluter Pfadangabe | |
| 111 | */ | |
| 112 | private void transform(String fileName) { | |
| 113 | transform(fileName, null); | |
| 114 | } | |
| 115 | ||
| 116 | /** | |
| 117 | * In ein Format transformieren, das von einem 'Backend' von Asciidoctor | |
| 118 | * unterstuetzt wird | |
| 119 | * @param fileName der Dateiname der Quelldatei samt absoluter Pfadangabe | |
| 120 | * @param backend das Kuerzel des Backends, z.B. der String 'pdf', wenn | |
| 121 | * nach PDF transformiert werden soll | |
| 122 | */ | |
| 123 | private void transform(String fileName, String backend) { | |
| 124 | Map<String, Object> attributes; | |
| 125 | File outFile = new File(fileName); | |
| 126 | String thisDirName = outFile.getParent(); | |
| 127 | File pdfStyles = new File(outFile.getParentFile(), "custom-theme.yml"); | |
| 128 | if(pdfStyles.exists()) { | |
| 129 | attributes = attributes() | |
| 130 | .attribute("pdf-themesdir", thisDirName) | |
| 131 | .attribute("pdf-theme","custom") | |
| 132 | .attribute("pdf-fontsdir", thisDirName + "/fonts") | |
| 133 | .attribute("allow-uri-read") | |
| 134 | .sourceHighlighter("highlightjs") | |
| 135 | .asMap(); | |
| 136 | } else { | |
| 137 | attributes = attributes() | |
| 138 | .sourceHighlighter("highlightjs") | |
| 139 | .asMap(); | |
| 140 | } | |
| 141 | Map<String, Object> options; | |
| 142 | if(null != backend) { | |
| 143 | options = options().inPlace(false) | |
| 144 | .safe(SafeMode.SERVER) | |
| 145 | .backend(backend).attributes(attributes).asMap(); | |
| 146 | ||
| 147 | } else { | |
| 148 | options = options().inPlace(false) | |
| 149 | .safe(SafeMode.SERVER) | |
| 150 | .attributes(attributes).asMap(); | |
| 151 | } | |
| 152 | ||
| 153 | Asciidoctor asciidoctor = create(); | |
| 154 | asciidoctor.requireLibrary("asciidoctor-diagram"); | |
| 155 | asciidoctor.convertFile(new File(fileName), options); | |
| 156 | } | |
| 157 | ||
| 158 | } | |
