Added the option to retrieve only the own seed or a seleceted seed

(selected by peer-hash) in the /yacy/seedlist.[json/xml] api.
Added also a xml-version of the servlet.
The own seed can be retrieved i.e. with
http://localhost:8090/yacy/seedlist.xml?my=
http://localhost:8090/yacy/seedlist.json?my=
and any other peer can be selected with
http://localhost:8090/yacy/seedlist.xml?id=<peerhash>
http://localhost:8090/yacy/seedlist.json?id=<peerhash>

htroot/yacy/seedlist.java

@@ -50,13 +50,24 @@ public final class seedlist {
         boolean nodeonly = post == null || !post.containsKey("node") ? false : post.getBoolean("node");
         boolean includeme = post == null || !post.containsKey("me") ? true : post.getBoolean("me");
         boolean addressonly = post == null || !post.containsKey("address") ? false : post.getBoolean("address");
-        String peername = post == null ? null : post.get("peername");
-        final ArrayList<Seed> v = sb.peers.getSeedlist(maxcount, includeme, nodeonly, minversion);
+        String peername = post == null ? null : post.containsKey("my") ? sb.peers.myName() : post.get("peername");
+        final ArrayList<Seed> v;
+        if (post != null && post.containsKey("my")) {
+            v = new ArrayList<Seed>(1);
+            v.add(sb.peers.mySeed());
+        } else if (post != null && post.containsKey("id")) {
+            v = new ArrayList<Seed>(1);
+            Seed s = sb.peers.get(post.get("id"));
+            if (s != null) v.add(s);
+        } else {
+            v= sb.peers.getSeedlist(maxcount, includeme, nodeonly, minversion);
+        }
         final serverObjects prop = new serverObjects();
         
         // write simple-encoded seed lines or json
         String EXT = header.get("EXT");
         boolean json = EXT != null && EXT.equals("json");
+        boolean xml = EXT != null && EXT.equals("xml");
         
         if (json) {
             // check for JSONP
@@ -93,6 +104,32 @@ public final class seedlist {
                 count++;
             }
 
+            prop.put("peers_" + (count - 1) + "_c", 0);
+            prop.put("peers", count);
+        } else if (xml) {
+            int count = 0;
+            for (int i = 0; i < v.size(); i++) {
+                Seed seed = v.get(i);
+                if (peername != null && !peername.equals(seed.getName())) continue;
+                prop.putXML("peers_" + count + "_map_0_k", Seed.HASH);
+                prop.putXML("peers_" + count + "_map_0_v", seed.hash);
+                prop.put("peers_" + count + "_map_0_c", 1);
+                Map<String, String> map = seed.getMap();
+                int c = 1;
+                if (!addressonly) {
+                    for (Map.Entry<String, String> m: map.entrySet()) {
+                        prop.putXML("peers_" + count + "_map_" + c + "_k", m.getKey());
+                        prop.putXML("peers_" + count + "_map_" + c + "_v", m.getValue());
+                        c++;
+                    }
+                }
+                prop.putXML("peers_" + count + "_map_" + c + "_k", "Address");
+                prop.putXML("peers_" + count + "_map_" + c + "_v", seed.getPublicAddress());
+                prop.put("peers_" + count + "_map_" + c + "_c", 0);
+                prop.put("peers_" + count + "_map", c + 1);
+                count++;
+            }
+    
             prop.put("peers_" + (count - 1) + "_c", 0);
             prop.put("peers", count);
         } else {

htroot/yacy/seedlist.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<peers>
+#{peers}#
+  <seed>
+#{map}#
+    <#[k]#>#[v]#</#[k]#>
+#{/map}#
+  </seed>
+#{/peers}#
+</peers>