Added a "directory multiplexer" responder.

[jsvc.git] / src / dolda / jsvc / util / Multiplexer.java
diff --git a/src/dolda/jsvc/util/Multiplexer.java b/src/dolda/jsvc/util/Multiplexer.java

new file mode 100644 (file)

index 0000000..dabcb34
--- /dev/null
+++ b/src/dolda/jsvc/util/Multiplexer.java
@@ -0,0 +1,69 @@
+package dolda.jsvc.util;
+
+import dolda.jsvc.*;
+import java.util.*;
+
+public class Multiplexer implements Responder {
+    private Responder def;
+    private Collection<Sub> subs = new LinkedList<Sub>();
+
+    private static interface Sub {
+       boolean match(Request req);
+    }
+    
+    public Multiplexer(Responder def) {
+       this.def = def;
+    }
+    
+    public Multiplexer() {
+       this(new SimpleWriter("html") {
+               public void respond(Request req, java.io.PrintWriter out) {
+                   req.status(404);
+                   out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+                   out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">");
+                   out.println("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en-US\">");
+                   out.println("<head><title>Resource not found</title></head>");
+                   out.println("<body>");
+                   out.println("<h1>Resource not found</h1>");
+                   out.println("The resource you requested could not be found on this server.");
+                   out.println("</body>");
+                   out.println("</html>");
+               }
+           });
+    }
+    
+    public void file(final String path, final Responder responder) {
+       subs.add(new Sub() {
+               public boolean match(Request req) {
+                   if(req.path().equals(path)) {
+                       responder.respond(req);
+                       return(true);
+                   }
+                   return(false);
+               }
+           });
+    }
+
+    public void dir(String path, final Responder responder) {
+       final String fp = Misc.stripslashes(path, true, true);
+       subs.add(new Sub() {
+               public boolean match(Request req) {
+                   if(req.path().equals(fp)) {
+                       throw(Restarts.redirect(fp + "/"));
+                   } else if(req.path().startsWith(fp + "/")) {
+                       responder.respond(RequestWrap.chpath(req, req.path().substring(fp.length() + 1)));
+                       return(true);
+                   }
+                   return(false);
+               }
+           });
+    }
+    
+    public void respond(Request req) {
+       for(Sub s : subs) {
+           if(s.match(req))
+               return;
+       }
+       def.respond(req);
+    }
+}