src/dolda/jsvc/util/Multiplexer.java

   1 package dolda.jsvc.util;
   2
   3 import dolda.jsvc.*;
   4 import java.util.*;
   5
   6 public class Multiplexer implements Responder {
   7     private Responder def;
   8     private Collection<Sub> subs = new LinkedList<Sub>();
   9
  10     private static interface Sub {
  11         boolean match(Request req);
  12     }
  13
  14     public Multiplexer(Responder def) {
  15         this.def = def;
  16     }
  17
  18     public Multiplexer() {
  19         this(new SimpleWriter("html") {
  20                 public void respond(Request req, java.io.PrintWriter out) {
  21                     req.status(404);
  22                     out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
  23                     out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">");
  24                     out.println("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en-US\">");
  25                     out.println("<head><title>Resource not found</title></head>");
  26                     out.println("<body>");
  27                     out.println("<h1>Resource not found</h1>");
  28                     out.println("The resource you requested could not be found on this server.");
  29                     out.println("</body>");
  30                     out.println("</html>");
  31                 }
  32             });
  33     }
  34
  35     public void file(final String path, final Responder responder) {
  36         subs.add(new Sub() {
  37                 public boolean match(Request req) {
  38                     if(req.path().equals(path)) {
  39                         responder.respond(req);
  40                         return(true);
  41                     }
  42                     return(false);
  43                 }
  44             });
  45     }
  46
  47     public void dir(String path, final Responder responder) {
  48         final String fp = Misc.stripslashes(path, true, true);
  49         subs.add(new Sub() {
  50                 public boolean match(Request req) {
  51                     if(req.path().equals(fp)) {
  52                         throw(Restarts.redirect(fp + "/"));
  53                     } else if(req.path().startsWith(fp + "/")) {
  54                         responder.respond(RequestWrap.chpath(req, req.path().substring(fp.length() + 1)));
  55                         return(true);
  56                     }
  57                     return(false);
  58                 }
  59             });
  60     }
  61
  62     public void respond(Request req) {
  63         for(Sub s : subs) {
  64             if(s.match(req))
  65                 return;
  66         }
  67         def.respond(req);
  68     }
  69 }