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

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