src/main/java/net/wpitchoune/asciidoctor/Main.java

   1 package net.wpitchoune.asciidoctor;
   2 /*
   3  * Copyright (C) 2016 jeanfi@gmail.com
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 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, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  */
  20
  21 import java.io.File;
  22 import java.io.FileInputStream;
  23 import java.io.FileNotFoundException;
  24 import java.io.FileReader;
  25 import java.io.IOException;
  26 import java.io.InputStream;
  27 import java.io.StringWriter;
  28 import java.nio.charset.StandardCharsets;
  29 import java.nio.file.Files;
  30 import java.util.ArrayList;
  31 import java.util.HashMap;
  32 import java.util.Properties;
  33 import java.util.logging.Logger;
  34
  35 import org.asciidoctor.Asciidoctor;
  36 import org.asciidoctor.Asciidoctor.Factory;
  37 import org.asciidoctor.ast.DocumentHeader;
  38
  39 import com.rometools.rome.feed.synd.SyndContentImpl;
  40 import com.rometools.rome.feed.synd.SyndEntry;
  41 import com.rometools.rome.feed.synd.SyndEntryImpl;
  42 import com.rometools.rome.feed.synd.SyndFeed;
  43 import com.rometools.rome.feed.synd.SyndFeedImpl;
  44 import com.rometools.rome.io.FeedException;
  45 import com.rometools.rome.io.SyndFeedOutput;
  46
  47 /**
  48  * Command line program which generates a feed (RSS v2) and HTML files
  49  * from a set of asciidoctor documents.
  50  *
  51  * @author jeanfi@gmail.com
  52  */
  53 public class Main {
  54         private static final Logger LOG = Logger.getLogger(Main.class.getSimpleName());
  55
  56         private static final Asciidoctor asciidoctor = Factory.create();
  57
  58         private static File toHTMLFile(File dir, File adoc) {
  59                 int idx;
  60                 String name;
  61
  62                 name = adoc.getName();
  63
  64                 idx = name.lastIndexOf('.');
  65
  66                 if (idx >= 0)
  67                         name = name.substring(0, idx);
  68
  69                 return new File(dir, name + ".html");
  70         }
  71
  72         private static SyndContentImpl toSyndContentImpl(String description) {
  73                 SyndContentImpl ret;
  74
  75                 ret = new SyndContentImpl();
  76                 ret.setType("text/html");
  77                 ret.setValue(description);
  78
  79                 return ret;
  80         }
  81
  82         private static void appendHTMLHead(StringBuffer sb, Configuration cfg)
  83                         throws IOException {
  84                 File f;
  85
  86                 f = cfg.getHTMLHeaderFile();
  87                 if (f == null) {
  88                         LOG.info("There is no declared HTML header file.");
  89                         return ;
  90                 }
  91
  92                 sb.append("<!DOCTYPE html>\n");
  93                 sb.append("<html>\n");
  94                 sb.append("<head>\n");
  95                 sb.append(new String(Files.readAllBytes(f.toPath()),
  96                                      StandardCharsets.UTF_8));
  97                 sb.append("</head>\n");
  98         }
  99
 100         private static void appendHTMLContentHeader(StringBuffer sb, String title) {
 101                 sb.append("<div id='header'>\n");
 102                 sb.append("<h1>");
 103                 sb.append(title);
 104                 sb.append("</h1>\n");
 105                 sb.append("</div>");
 106         }
 107
 108         private static void generateHTMLFileItem(String itemTitle, String itemContent) {
 109
 110         }
 111
 112         public static void main(String[] args) throws FileNotFoundException, IOException, FeedException {
 113                 File inDir, html, outDir;
 114                 File[] adocs;
 115                 StringWriter desc;
 116                 SyndFeed feed;
 117                 Configuration cfg;
 118                 ArrayList<SyndEntry> entries;
 119                 SyndEntryImpl e;
 120                 DocumentHeader h;
 121                 SyndContentImpl c;
 122                 StringBuffer news;
 123                 String itemTitle, itemContent;
 124
 125                 inDir = new File(args[0]);
 126                 outDir = new File(args[1]);
 127
 128                 cfg = Configuration.load(new File(args[2]));
 129
 130                 adocs = inDir.listFiles();
 131
 132                 feed = new SyndFeedImpl();
 133                 feed.setTitle(cfg.getFeedTitle());
 134                 feed.setDescription(cfg.getFeedDescription());
 135                 feed.setLink(cfg.getFeedLink());
 136
 137                 entries = new ArrayList<SyndEntry>();
 138
 139                 news = new StringBuffer();
 140
 141                 appendHTMLHead(news, cfg);
 142
 143                 news.append("<body>\n");
 144
 145                 appendHTMLContentHeader(news, cfg.getFeedTitle());
 146
 147                 news.append("<div id='content'>\n");
 148
 149                 for (File adoc: adocs) {
 150                         if (!adoc.getName().endsWith(".adoc"))
 151                                 continue;
 152                         desc = new StringWriter();
 153
 154                         html = toHTMLFile(outDir, adoc);
 155
 156                         h = asciidoctor.readDocumentHeader(adoc);
 157
 158                         asciidoctor.convert(new FileReader(adoc), desc, new HashMap<String,Object>());
 159
 160                         itemTitle = h.getDocumentTitle().getMain();
 161                         itemContent = desc.toString();
 162
 163                         e = new SyndEntryImpl();
 164                         e.setTitle(itemTitle);
 165                         e.setUri(cfg.getFeedBaseURL() + "/" + html.getName());
 166
 167                         c = toSyndContentImpl(itemContent);
 168
 169                         e.setDescription(c);
 170
 171                         entries.add(e);
 172
 173                         news.append("\n<div>\n");
 174                         news.append("<h2>");
 175                         news.append(h.getDocumentTitle().getMain());
 176                         news.append("</h2>\n");
 177                         news.append(desc.toString());
 178                         news.append("\n</div>\n");
 179
 180                         generateHTMLFileItem(itemTitle, itemContent);
 181                 }
 182
 183                 news.append("</div>\n");
 184
 185                 news.append("</body>\n");
 186                 news.append("</html>\n");
 187
 188                 feed.setEntries(entries);
 189
 190                 feed.setFeedType("rss_2.0");
 191                 SyndFeedOutput output = new SyndFeedOutput();
 192                 output.output(feed, new File(outDir, "feed.xml"));
 193
 194                 System.out.println(news.toString());
 195                 Files.write(new File(outDir, "news.html").toPath(), news.toString().getBytes());
 196         }
 197 }