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.FileNotFoundException;
  23 import java.io.FileReader;
  24 import java.io.IOException;
  25 import java.io.StringWriter;
  26 import java.nio.charset.StandardCharsets;
  27 import java.nio.file.Files;
  28 import java.text.ParseException;
  29 import java.text.SimpleDateFormat;
  30 import java.util.ArrayList;
  31 import java.util.Date;
  32 import java.util.HashMap;
  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 final SimpleDateFormat DATE_FORMATTER = new SimpleDateFormat("yyyy-dd-MM");
  59
  60         private static File toHTMLFile(File dir, File adoc) {
  61                 int idx;
  62                 String name;
  63
  64                 name = adoc.getName();
  65
  66                 idx = name.lastIndexOf('.');
  67
  68                 if (idx >= 0)
  69                         name = name.substring(0, idx);
  70
  71                 return new File(dir, name + ".html");
  72         }
  73
  74         private static SyndContentImpl toSyndContentImpl(String description) {
  75                 SyndContentImpl ret;
  76
  77                 ret = new SyndContentImpl();
  78                 ret.setType("text/html");
  79                 ret.setValue(description);
  80
  81                 return ret;
  82         }
  83
  84         private static void appendHTMLHead(StringBuffer sb, Configuration cfg)
  85                         throws IOException {
  86                 File f;
  87
  88                 f = cfg.getHTMLHeaderFile();
  89                 if (f == null) {
  90                         LOG.info("There is no declared HTML header file.");
  91                         return ;
  92                 }
  93
  94                 sb.append("<!DOCTYPE html>\n");
  95                 sb.append("<html>\n");
  96                 sb.append("<head>\n");
  97                 sb.append(new String(Files.readAllBytes(f.toPath()),
  98                                      StandardCharsets.UTF_8));
  99                 sb.append("</head>\n");
 100         }
 101
 102         private static void appendHTMLFooter(StringBuffer sb) {
 103                 sb.append("</body>\n");
 104                 sb.append("</html>");
 105         }
 106
 107         private static void appendHTMLContentHeader(StringBuffer sb, String title) {
 108                 sb.append("<div id='header'>\n");
 109                 sb.append("<h1>");
 110                 sb.append(title);
 111                 sb.append("</h1>\n");
 112                 sb.append("</div>");
 113         }
 114
 115         private static void generateHTMLFileItem(File file,
 116                                                  String title,
 117                                                  String content,
 118                                                  Date date,
 119                                                  Configuration cfg) throws IOException {
 120                 StringBuffer buf;
 121
 122                 buf = new StringBuffer();
 123
 124                 appendHTMLHead(buf, cfg);
 125
 126                 buf.append("<body>\n");
 127
 128                 appendHTMLContentHeader(buf, title);
 129
 130                 buf.append("<div id='content'>\n");
 131                 if (date != null) {
 132                         buf.append("<div class='date'>");
 133                         buf.append(DATE_FORMATTER.format(date));
 134                         buf.append("</div>");
 135                 }
 136                 buf.append(content);
 137                 buf.append("</div>");
 138
 139                 appendHTMLFooter(buf);
 140
 141                 Files.write(file.toPath(), buf.toString().getBytes());
 142         }
 143
 144         public static void main(String[] args) throws FileNotFoundException, IOException, FeedException, ParseException {
 145                 File inDir, html, outDir;
 146                 File[] adocs;
 147                 StringWriter desc;
 148                 SyndFeed feed;
 149                 Configuration cfg;
 150                 ArrayList<SyndEntry> entries;
 151                 SyndEntryImpl e;
 152                 DocumentHeader h;
 153                 SyndContentImpl c;
 154                 StringBuffer news;
 155                 String itemTitle, itemContent, itemURI, strDate;
 156                 Date itemDate;
 157
 158                 inDir = new File(args[0]);
 159                 outDir = new File(args[1]);
 160
 161                 cfg = Configuration.load(new File(args[2]));
 162
 163                 adocs = inDir.listFiles();
 164
 165                 feed = new SyndFeedImpl();
 166                 feed.setTitle(cfg.getFeedTitle());
 167                 feed.setDescription(cfg.getFeedDescription());
 168                 feed.setLink(cfg.getFeedLink());
 169
 170                 entries = new ArrayList<SyndEntry>();
 171
 172                 news = new StringBuffer();
 173
 174                 appendHTMLHead(news, cfg);
 175
 176                 news.append("<body>\n");
 177
 178                 appendHTMLContentHeader(news, cfg.getFeedTitle());
 179
 180                 news.append("<div id='content'>\n");
 181
 182                 for (File adoc: adocs) {
 183                         if (!adoc.getName().endsWith(".adoc"))
 184                                 continue;
 185                         desc = new StringWriter();
 186
 187                         html = toHTMLFile(outDir, adoc);
 188
 189                         h = asciidoctor.readDocumentHeader(adoc);
 190
 191                         if (h.getAttributes().get("date") == null)
 192                                 strDate = h.getAttributes().get("docdate").toString();
 193                         else
 194                                 strDate = h.getAttributes().get("date").toString();
 195
 196                         itemDate = DATE_FORMATTER.parse(strDate);
 197
 198                         asciidoctor.convert(new FileReader(adoc), desc, new HashMap<String,Object>());
 199
 200                         itemTitle = h.getDocumentTitle().getMain();
 201                         itemContent = desc.toString();
 202
 203                         e = new SyndEntryImpl();
 204                         e.setTitle(itemTitle);
 205                         itemURI = cfg.getFeedBaseURL() + "/" + html.getName();
 206                         e.setUri(itemURI);
 207                         e.setLink(itemURI);
 208                         e.setPublishedDate(itemDate);
 209
 210                         c = toSyndContentImpl(itemContent);
 211
 212                         e.setDescription(c);
 213
 214                         entries.add(e);
 215
 216                         news.append("\n<div>");
 217                         news.append("<h2>");
 218                         news.append(itemTitle);
 219                         news.append("</h2>");
 220                         if (news != null) {
 221                                 news.append("<div class='date'>");
 222                                 news.append(DATE_FORMATTER.format(itemDate));
 223                                 news.append("</div>");
 224                         }
 225                         news.append(desc.toString());
 226                         news.append("</div>\n");
 227
 228                         generateHTMLFileItem(html, itemTitle, itemContent, itemDate, cfg);
 229                 }
 230
 231                 news.append("</div>\n");
 232
 233                 appendHTMLFooter(news);
 234
 235                 feed.setEntries(entries);
 236
 237                 feed.setFeedType("rss_2.0");
 238                 SyndFeedOutput output = new SyndFeedOutput();
 239                 output.output(feed, new File(outDir, "feed.xml"));
 240
 241                 Files.write(new File(outDir, "news.html").toPath(), news.toString().getBytes());
 242         }
 243 }