3 files changed, 42 insertions, 2 deletions

diff --git a/src/Network/BitTorrent/Core.hs b/src/Network/BitTorrent/Core.hs
index 6024f5a5..2ddee517 100644
--- a/src/Network/BitTorrent/Core.hs
+++ b/src/Network/BitTorrent/Core.hs
@@ -20,8 +20,11 @@ module Network.BitTorrent.Core
 import Control.Applicative
 import Data.IP
 import Data.Serialize
+import Data.Time
 import Data.Typeable
 import Network.Socket (SockAddr (..), PortNumber)
+import Text.PrettyPrint as PP hiding ((<>))
+import Text.PrettyPrint.Class
 
 import Network.BitTorrent.Core.Fingerprint as Core
 import Network.BitTorrent.Core.Node        as Core
@@ -29,7 +32,10 @@ import Network.BitTorrent.Core.PeerId      as Core
 import Network.BitTorrent.Core.PeerAddr    as Core
 
 
-class (Eq a, Serialize a, Typeable a) => Address a where
+instance Pretty UTCTime where
+  pretty = PP.text . show
+
+class (Eq a, Serialize a, Typeable a, Pretty a) => Address a where
   toSockAddr   :: a        -> SockAddr
   fromSockAddr :: SockAddr -> Maybe a
 
diff --git a/src/Network/BitTorrent/Core/Node.hs b/src/Network/BitTorrent/Core/Node.hs
index 9501d59e..090bfd4e 100644
--- a/src/Network/BitTorrent/Core/Node.hs
+++ b/src/Network/BitTorrent/Core/Node.hs
@@ -37,11 +37,14 @@ import Data.Aeson (ToJSON, FromJSON)
 import Data.Aeson.TH
 import Data.Bits
 import Data.ByteString as BS
+import Data.ByteString.Char8 as BC
+import Data.ByteString.Base16 as Base16
 import Data.BEncode as BE
 import Data.Default
 import Data.Hashable
 import Data.IP
 import Data.List as L
+import Data.Monoid
 import Data.Ord
 import Data.Serialize as S
 import Data.String
@@ -49,6 +52,8 @@ import Data.Typeable
 import Data.Word
 import Network
 import System.Entropy
+import Text.PrettyPrint as PP hiding ((<>))
+import Text.PrettyPrint.Class
 
 import Data.Torrent.JSON
 import Network.BitTorrent.Core.PeerAddr (PeerAddr (..))
@@ -86,6 +91,10 @@ instance IsString NodeId where
     |           otherwise = error "fromString: invalid NodeId length"
   {-# INLINE fromString #-}
 
+-- | base16 encoded.
+instance Pretty NodeId where
+  pretty (NodeId nid) = PP.text $ BC.unpack $ Base16.encode nid
+
 -- | Test if the nth bit is set.
 testIdBit :: NodeId -> Word -> Bool
 testIdBit (NodeId bs) i
@@ -131,6 +140,9 @@ instance Hashable a => Hashable (NodeAddr a) where
   hashWithSalt s NodeAddr {..} = hashWithSalt s (nodeHost, nodePort)
   {-# INLINE hashWithSalt #-}
 
+instance Pretty ip => Pretty (NodeAddr ip) where
+  pretty NodeAddr {..} = pretty nodeHost <> ":" <> pretty nodePort
+
 -- | Example:
 --
 --   @nodePort \"127.0.0.1:6881\" == 6881@
@@ -165,3 +177,9 @@ instance Eq a => Ord (NodeInfo a) where
 instance Serialize a => Serialize (NodeInfo a) where
   get = NodeInfo <$> get <*> get
   put NodeInfo {..} = put nodeId >> put nodeAddr
+
+instance Pretty ip => Pretty (NodeInfo ip) where
+  pretty NodeInfo {..} = pretty nodeId <> "@(" <> pretty nodeAddr <> ")"
+
+instance Pretty ip => Pretty [NodeInfo ip] where
+  pretty = PP.vcat . PP.punctuate "," . L.map pretty
diff --git a/src/Network/BitTorrent/Core/PeerAddr.hs b/src/Network/BitTorrent/Core/PeerAddr.hs
index 9f5c7c5d..4905f910 100644
--- a/src/Network/BitTorrent/Core/PeerAddr.hs
+++ b/src/Network/BitTorrent/Core/PeerAddr.hs
@@ -50,7 +50,7 @@ import Data.String
 import Data.Typeable
 import Data.Word
 import Network.Socket
-import Text.PrettyPrint hiding ((<>))
+import Text.PrettyPrint as PP hiding ((<>))
 import Text.PrettyPrint.Class
 import Text.Read (readMaybe)
 import qualified Text.ParserCombinators.ReadP as RP
@@ -86,6 +86,10 @@ instance Hashable PortNumber where
   hashWithSalt s = hashWithSalt s . fromEnum
   {-# INLINE hashWithSalt #-}
 
+instance Pretty PortNumber where
+  pretty = PP.int . fromEnum
+  {-# INLINE pretty #-}
+
 {-----------------------------------------------------------------------
 --  IP addr
 -----------------------------------------------------------------------}
@@ -160,6 +164,18 @@ instance Serialize IPv6 where
     put ip = put $ toHostAddress6 ip
     get = fromHostAddress6 <$> get
 
+instance Pretty IPv4 where
+  pretty = PP.text . show
+  {-# INLINE pretty #-}
+
+instance Pretty IPv6 where
+  pretty = PP.text . show
+  {-# INLINE pretty #-}
+
+instance Pretty IP where
+  pretty = PP.text . show
+  {-# INLINE pretty #-}
+
 {-----------------------------------------------------------------------
 --  Peer addr
 -----------------------------------------------------------------------}