src/main/java/Main.java

   1 import java.io.File;
   2 import java.io.FileInputStream;
   3 import java.io.FileNotFoundException;
   4 import java.io.FileReader;
   5 import java.io.IOException;
   6 import java.io.InputStream;
   7 import java.io.StringWriter;
   8 import java.nio.charset.StandardCharsets;
   9 import java.nio.file.Files;
  10 import java.util.ArrayList;
  11 import java.util.HashMap;
  12 import java.util.Properties;
  13 import java.util.logging.Logger;
  14
  15 import org.asciidoctor.Asciidoctor;
  16 import org.asciidoctor.Asciidoctor.Factory;
  17 import org.asciidoctor.ast.DocumentHeader;
  18
  19 import com.rometools.rome.feed.synd.SyndContentImpl;
  20 import com.rometools.rome.feed.synd.SyndEntry;
  21 import com.rometools.rome.feed.synd.SyndEntryImpl;
  22 import com.rometools.rome.feed.synd.SyndFeed;
  23 import com.rometools.rome.feed.synd.SyndFeedImpl;
  24 import com.rometools.rome.io.FeedException;
  25 import com.rometools.rome.io.SyndFeedOutput;
  26
  27 public class Main {
  28         private static Logger LOG = Logger.getLogger(Main.class.getSimpleName());
  29         private static String KEY_HTML_HEADER_FILE = "html.header.file";
  30
  31         private static File toHTMLFile(File dir, File adoc) {
  32                 int idx;
  33                 String name;
  34
  35                 name = adoc.getName();
  36
  37                 idx = name.lastIndexOf('.');
  38
  39                 if (idx >= 0)
  40                         name = name.substring(0, idx);
  41
  42                 return new File(dir, name + ".html");
  43         }
  44
  45         private static SyndContentImpl toSyndContentImpl(String description) {
  46                 SyndContentImpl ret;
  47
  48                 ret = new SyndContentImpl();
  49                 ret.setType("text/html");
  50                 ret.setValue(description);
  51
  52                 return ret;
  53         }
  54
  55         private static String getHTMLHeader(Properties props) throws IOException {
  56                 String fileName;
  57                 File f;
  58
  59                 fileName = props.getProperty(KEY_HTML_HEADER_FILE);
  60
  61                 if (fileName == null) {
  62                         LOG.info(KEY_HTML_HEADER_FILE + " is not set");
  63                         return null;
  64                 }
  65
  66                 f = new File(fileName);
  67                 return new String(Files.readAllBytes(f.toPath()),
  68                                   StandardCharsets.UTF_8);
  69         }
  70
  71         public static void main(String[] args) throws FileNotFoundException, IOException, FeedException {
  72                 File inDir, html, outDir;
  73                 File[] adocs;
  74                 StringWriter desc;
  75                 Asciidoctor asciidoctor;
  76                 SyndFeed feed;
  77                 Properties props;
  78                 ArrayList<SyndEntry> entries;
  79                 SyndEntryImpl e;
  80                 InputStream in;
  81                 DocumentHeader h;
  82                 SyndContentImpl c;
  83                 StringBuffer news;
  84
  85                 inDir = new File(args[0]);
  86                 outDir = new File(args[1]);
  87
  88                 props = new Properties();
  89                 in = new FileInputStream(args[2]);
  90                 props.load(in);
  91                 in.close();
  92
  93                 adocs = inDir.listFiles();
  94
  95                 asciidoctor = Factory.create();
  96
  97                 feed = new SyndFeedImpl();
  98                 feed.setTitle(props.getProperty("feed.title"));
  99                 feed.setDescription(props.getProperty("feed.description"));
 100                 feed.setLink(props.getProperty("feed.link"));
 101
 102                 entries = new ArrayList<SyndEntry>();
 103
 104                 news = new StringBuffer();
 105                 news.append("<html>\n");
 106
 107                 getHTMLHeader(props);
 108
 109                 news.append("<body>\n");
 110                 for (File adoc: adocs) {
 111                         if (!adoc.getName().endsWith(".adoc"))
 112                                 continue;
 113                         desc = new StringWriter();
 114
 115                         html = toHTMLFile(outDir, adoc);
 116
 117                         h = asciidoctor.readDocumentHeader(adoc);
 118
 119                         asciidoctor.convert(new FileReader(adoc), desc, new HashMap<String,Object>());
 120
 121                         e = new SyndEntryImpl();
 122                         e.setTitle(h.getDocumentTitle().getMain());
 123                         e.setUri(props.getProperty("feed.baseurl") + "/" + html.getName());
 124
 125                         c = toSyndContentImpl(desc.toString());
 126
 127                         e.setDescription(c);
 128
 129                         entries.add(e);
 130
 131                         news.append("\n<div>\n");
 132                         news.append("<h2>");
 133                         news.append(h.getDocumentTitle().getMain());
 134                         news.append("</h2>\n");
 135                         news.append(desc.toString());
 136                         news.append("\n</div>\n");
 137                 }
 138                 news.append("</body>\n");
 139                 news.append("</html>\n");
 140
 141                 feed.setEntries(entries);
 142
 143                 feed.setFeedType("rss_2.0");
 144                 SyndFeedOutput output = new SyndFeedOutput();
 145                 output.output(feed, new File(outDir, "feed.xml"));
 146
 147                 System.out.println(news.toString());
 148                 Files.write(new File(outDir, "news.html").toPath(), news.toString().getBytes());
 149         }
 150 }