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