src/be/nikiroo/gofetch/output/Gopher.java

   1 package be.nikiroo.gofetch.output;
   2
   3 import be.nikiroo.gofetch.data.Comment;
   4 import be.nikiroo.gofetch.data.Story;
   5 import be.nikiroo.gofetch.support.Type;
   6 import be.nikiroo.utils.StringUtils;
   7 import be.nikiroo.utils.StringUtils.Alignment;
   8
   9 public class Gopher extends Output {
  10         static private final int LINE_SIZE = 67;
  11
  12         public Gopher(Type type, String hostname, String preselector, int port) {
  13                 super(type, hostname, preselector, port);
  14         }
  15
  16         @Override
  17         public String getIndexHeader() {
  18                 StringBuilder builder = new StringBuilder();
  19
  20                 appendCenter(builder, true, "NEWS", "", true);
  21                 appendLeft(builder, true, "", "");
  22                 appendLeft(builder, true,
  23                                 "You will find here a few pages full of news.", "");
  24                 appendLeft(builder, true, "", "");
  25                 appendLeft(
  26                                 builder,
  27                                 true,
  28                                 "They are simply scrapped from their associated webpage and converted into a gopher friendly format, updated a few times a day.",
  29                                 "");
  30                 appendLeft(builder, true, "", "");
  31
  32                 return builder.toString();
  33         }
  34
  35         @Override
  36         public String getIndexFooter() {
  37                 return "";
  38         }
  39
  40         @Override
  41         public String exportHeader(Story story) {
  42                 return append(new StringBuilder(), story, true).toString();
  43         }
  44
  45         @Override
  46         public String export(Story story) {
  47                 StringBuilder builder = new StringBuilder();
  48                 append(builder, story, false);
  49
  50                 builder.append("\r\n");
  51
  52                 if (story.getComments() != null) {
  53                         for (Comment comment : story.getComments()) {
  54                                 append(builder, false, comment, "  ");
  55                         }
  56                 }
  57
  58                 builder.append("\r\n");
  59
  60                 return builder.toString();
  61         }
  62
  63         private StringBuilder append(StringBuilder builder, boolean menu,
  64                         Comment comment, String space) {
  65
  66                 if (space.length() > LINE_SIZE - 20) {
  67                         space = space.substring(0, LINE_SIZE - 20);
  68                 }
  69
  70                 appendLeft(builder, menu, comment.getTitle(), "** ", "   ", space);
  71
  72                 if (comment.getAuthor() != null
  73                                 && !comment.getAuthor().trim().isEmpty()) {
  74                         appendLeft(builder, menu, "(" + comment.getAuthor() + ")", "   ",
  75                                         "   ", space);
  76                         builder.append((menu ? "i" : "") + "\r\n");
  77                 }
  78
  79                 for (String line : comment.getContentLines()) {
  80                         int depth = 0;
  81                         while (line.length() > depth && line.charAt(depth) == '>') {
  82                                 depth++;
  83                         }
  84                         line = line.substring(depth).trim();
  85
  86                         String prep = "   ";
  87                         for (int i = 0; i < depth; i++) {
  88                                 prep += ">";
  89                         }
  90
  91                         if (depth > 0) {
  92                                 prep += " ";
  93                         }
  94
  95                         appendLeft(builder, menu, line, prep, prep, space);
  96                 }
  97
  98                 builder.append((menu ? "i" : "") + "\r\n");
  99                 for (Comment subComment : comment) {
 100                         append(builder, menu, subComment, space + "   ");
 101                         builder.append((menu ? "i" : "") + "\r\n");
 102                 }
 103
 104                 return builder;
 105         }
 106
 107         private StringBuilder append(StringBuilder builder, Story story,
 108                         boolean resume) {
 109                 if (!resume) {
 110                         appendCenter(builder, false, story.getTitle(), "  ", true);
 111                         builder.append("\r\n");
 112                         appendJustified(builder, false, story.getDetails(), "  ");
 113                         builder.append("\r\n");
 114
 115                         builder.append("  o News link: ").append(story.getUrlInternal())
 116                                         .append("\r\n");
 117                         builder.append("  o Source link: ").append(story.getUrlExternal())
 118                                         .append("\r\n");
 119                         builder.append("\r\n");
 120
 121                         builder.append("\r\n");
 122
 123                         appendJustified(builder, false, story.getFullContent(), "    ");
 124                         builder.append("\r\n");
 125                 } else {
 126                         builder.append('0').append(story.getTitle()) //
 127                                         .append('\t').append(story.getSelector()) //
 128                                         .append('\t').append(hostname) //
 129                                         .append('\t').append(port) //
 130                                         .append("\r\n");
 131                         appendJustified(builder, true, story.getDetails(), "  ");
 132                         builder.append("i\r\n");
 133
 134                         String content = story.getContent();
 135                         if (!content.isEmpty()) {
 136                                 appendJustified(builder, true, content, "    ");
 137                                 builder.append("i\r\n");
 138                         }
 139                 }
 140
 141                 return builder;
 142         }
 143
 144         // note: adds "i"
 145         private static void appendCenter(StringBuilder builder, boolean menu,
 146                         String text, String space, boolean allCaps) {
 147                 if (allCaps) {
 148                         text = text.toUpperCase();
 149                 }
 150
 151                 int size = LINE_SIZE - space.length();
 152                 for (String line : StringUtils
 153                                 .justifyText(text, size, Alignment.CENTER)) {
 154                         builder.append(menu ? "i" : "") //
 155                                         .append(space) //
 156                                         .append(line) //
 157                                         .append("\r\n");
 158                 }
 159         }
 160
 161         private static void appendJustified(StringBuilder builder, boolean menu,
 162                         String text, String space) {
 163                 for (String line : text.split("\n")) {
 164                         int size = LINE_SIZE - space.length();
 165                         for (String subline : StringUtils.justifyText(line, size,
 166                                         Alignment.JUSTIFY)) {
 167                                 builder.append(menu ? "i" : "") //
 168                                                 .append(space) //
 169                                                 .append(subline) //
 170                                                 .append("\r\n");
 171                         }
 172                 }
 173         }
 174
 175         private static void appendLeft(StringBuilder builder, boolean menu,
 176                         String text, String space) {
 177                 appendLeft(builder, menu, text, "", "", space);
 178         }
 179
 180         private static void appendLeft(StringBuilder builder, boolean menu,
 181                         String text, String prependFirst, String prependOthers, String space) {
 182                 String prepend = prependFirst;
 183                 for (String line : text.split("\n")) {
 184                         for (String subline : StringUtils.justifyText(line, LINE_SIZE
 185                                         - space.length(), Alignment.LEFT)) {
 186                                 builder.append(menu ? "i" : "") //
 187                                                 .append(space) //
 188                                                 .append(prepend) //
 189                                                 .append(subline) //
 190                                                 .append("\r\n");
 191                                 prepend = prependOthers;
 192                         }
 193                 }
 194         }
 195 }