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

   1 package net.wpitchoune.asciidoctor;
   2
   3 import java.io.File;
   4 import java.io.IOException;
   5 import java.nio.charset.StandardCharsets;
   6 import java.nio.file.Files;
   7 import java.text.SimpleDateFormat;
   8 import java.util.ArrayList;
   9 import java.util.Collection;
  10 import java.util.Collections;
  11 import java.util.Comparator;
  12 import java.util.List;
  13 import java.util.logging.Logger;
  14
  15 import com.rometools.rome.feed.synd.SyndEntry;
  16
  17 /*
  18  * Copyright (C) 2016 jeanfi@gmail.com
  19  *
  20  * This program is free software; you can redistribute it and/or
  21  * modify it under the terms of the GNU General Public License as
  22  * published by the Free Software Foundation; either version 2 of the
  23  * License, or (at your option) any later version.
  24  *
  25  * This program is distributed in the hope that it will be useful, but
  26  * WITHOUT ANY WARRANTY; without even the implied warranty of
  27  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  28  * General Public License for more details.
  29  *
  30  * You should have received a copy of the GNU General Public License
  31  * along with this program; if not, write to the Free Software
  32  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  33  * 02110-1301 USA
  34  */
  35
  36 public final class HTML {
  37         private static final Logger LOG = Logger.getLogger(Main.class.getSimpleName());
  38         private static final SimpleDateFormat DATE_FORMATTER = new SimpleDateFormat("yyyy-dd-MM");
  39         private final Configuration config;
  40
  41         public HTML(Configuration config) {
  42                 this.config = config;
  43         }
  44
  45         public static void appendHTMLHead(StringBuffer sb, String title, Configuration config)
  46                         throws IOException {
  47                 File f;
  48
  49                 f = config.getHTMLHeaderFile();
  50                 if (f == null) {
  51                         LOG.info("There is no declared HTML header file.");
  52                         return ;
  53                 }
  54
  55                 sb.append("<!DOCTYPE html>\n");
  56                 sb.append("<html>\n");
  57                 sb.append("<head>\n");
  58                 sb.append(new String(Files.readAllBytes(f.toPath()),
  59                                      StandardCharsets.UTF_8));
  60                 sb.append("<title>");
  61                 sb.append(title);
  62                 sb.append("</title>\n");
  63                 sb.append("</head>\n");
  64         }
  65
  66         private void appendHTMLHead(StringBuffer sb, String title) throws IOException {
  67                 appendHTMLHead(sb, title, config);
  68         }
  69
  70         public static void appendHTMLContentHeader(StringBuffer sb, String title) {
  71                 sb.append("<div id='header'>\n");
  72                 sb.append("<h1>");
  73                 sb.append(title);
  74                 sb.append("</h1>\n");
  75                 sb.append("</div>");
  76         }
  77
  78
  79         private void appendHTMLFooter(StringBuffer sb) throws IOException {
  80                 sb.append(new String(Files.readAllBytes(config.getHTMLFooterFile().toPath()),
  81                                      StandardCharsets.UTF_8));
  82                 appendEndTag(sb, "body", 1, true);
  83                 appendEndTag(sb, "html", 0, false);
  84         }
  85
  86         public String toHTML(SyndEntry entry) throws IOException {
  87                 StringBuffer buf;
  88
  89                 buf = new StringBuffer();
  90
  91                 appendHTMLHead(buf, entry.getTitle());
  92
  93                 buf.append("<body>\n");
  94
  95                 appendHTMLContentHeader(buf, entry.getTitle());
  96
  97                 buf.append("<div id='content'>\n");
  98                 if (entry.getPublishedDate() != null) {
  99                         buf.append("<div class='date'>");
 100                         buf.append(DATE_FORMATTER.format(entry.getPublishedDate()));
 101                         buf.append("</div>");
 102                 }
 103                 buf.append(entry.getDescription().getValue());
 104                 buf.append("</div>");
 105
 106                 appendHTMLFooter(buf);
 107
 108                 return buf.toString();
 109         }
 110
 111         private static void appendStartTag(StringBuffer buf, String tag, int indent, boolean newline) {
 112                 while (indent > 0) {
 113                         buf.append('\t');
 114                         indent--;
 115                 }
 116                 buf.append('<');
 117                 buf.append(tag);
 118                 buf.append(">");
 119
 120                 if (newline)
 121                         buf.append('\n');
 122         }
 123
 124         private static void appendEndTag(StringBuffer buf, String tag, int indent, boolean newline) {
 125                 while (indent > 0) {
 126                         buf.append('\t');
 127                         indent--;
 128                 }
 129                 buf.append("</");
 130                 buf.append(tag);
 131                 buf.append(">");
 132
 133                 if (newline)
 134                         buf.append('\n');
 135         }
 136
 137         public String toHTML(Collection<SyndEntry> entries) throws IOException {
 138                 StringBuffer buf;
 139                 List<SyndEntry> sortedEntries;
 140                 Comparator<SyndEntry> cmp;
 141
 142                 buf = new StringBuffer();
 143
 144                 appendHTMLHead(buf, config.getFeedTitle());
 145
 146                 appendStartTag(buf, "body", 1, true);
 147
 148                 appendHTMLContentHeader(buf, config.getFeedTitle());
 149
 150                 buf.append("<div id='content'>\n");
 151
 152                 cmp = new Comparator<SyndEntry>() {
 153                         @Override
 154                         public int compare(SyndEntry o1, SyndEntry o2) {
 155                                 return o2.getPublishedDate().compareTo(o1.getPublishedDate());
 156                         }
 157                 };
 158
 159                 sortedEntries = new ArrayList<SyndEntry>(entries);
 160                 Collections.sort(sortedEntries, cmp);
 161
 162                 for(SyndEntry e: sortedEntries) {
 163                         appendStartTag(buf, "article", 3, true);
 164                         appendStartTag(buf, "header", 4, true);
 165                         appendStartTag(buf, "h1", 5, false);
 166                         buf.append("<a href='" + e.getUri() + "'>");
 167                         buf.append(e.getTitle());
 168                         buf.append("</a>");
 169                         appendEndTag(buf, "h1", 0, true);
 170
 171                         if (e.getPublishedDate() != null) {
 172                                 buf.append("<div class='date'>");
 173                                 buf.append(DATE_FORMATTER.format(e.getPublishedDate()));
 174                                 buf.append("</div>\n");
 175                         }
 176
 177                         appendEndTag(buf, "header", 4, true);
 178
 179                         buf.append(e.getDescription().getValue());
 180
 181                         appendEndTag(buf, "article", 3, true);
 182                 }
 183
 184                 buf.append("</div>\n");
 185
 186                 appendHTMLFooter(buf);
 187
 188                 return buf.toString();
 189         }
 190 }