src/be/nikiroo/gofetch/support/BasicSupport.java

   1 package be.nikiroo.gofetch.support;
   2
   3 import java.io.IOException;
   4 import java.io.InputStream;
   5 import java.net.URL;
   6 import java.net.URLConnection;
   7 import java.util.List;
   8 import java.util.zip.GZIPInputStream;
   9
  10 import be.nikiroo.gofetch.data.Comment;
  11 import be.nikiroo.gofetch.data.Story;
  12
  13 public abstract class BasicSupport {
  14         public enum Type {
  15                 SLASHDOT, PIPEDOT, LWN,
  16         }
  17
  18         static private String preselector;
  19
  20         private Type type;
  21
  22         abstract public List<Story> list() throws IOException;
  23
  24         abstract public List<Comment> getComments(Story story) throws IOException;
  25
  26         abstract public String getDescription();
  27
  28         public String getSelector() {
  29                 return getSelector(type);
  30         }
  31
  32         public Type getType() {
  33                 return type;
  34         }
  35
  36         protected void setType(Type type) {
  37                 this.type = type;
  38         }
  39
  40         /**
  41          * @param preselector
  42          *            the preselector to set
  43          */
  44         static public void setPreselector(String preselector) {
  45                 BasicSupport.preselector = preselector;
  46         }
  47
  48         static public BasicSupport getSupport(Type type) {
  49                 BasicSupport support = null;
  50
  51                 if (type != null) {
  52                         switch (type) {
  53                         case SLASHDOT:
  54                                 support = new Slashdot();
  55                                 break;
  56                         case PIPEDOT:
  57                                 support = new Pipedot();
  58                                 break;
  59                         case LWN:
  60                                 support = new LWN();
  61                                 break;
  62                         }
  63
  64                         if (support != null) {
  65                                 support.setType(type);
  66                         }
  67                 }
  68
  69                 return support;
  70         }
  71
  72         static public String getSelector(Type type) {
  73                 return preselector + "/" + type + "/";
  74         }
  75
  76         // TODO: check Downloader.java?
  77         static protected InputStream open(URL url) throws IOException {
  78                 URLConnection conn = url.openConnection();
  79                 conn.connect();
  80                 InputStream in = conn.getInputStream();
  81                 if ("gzip".equals(conn.getContentEncoding())) {
  82                         in = new GZIPInputStream(in);
  83                 }
  84
  85                 return in;
  86         }
  87 }