From: Ramakrishnan Muthukrishnan <ram@rkrishnan.org>
Date: Sun, 26 Jul 2015 06:38:53 +0000 (+0530)
Subject: refactor file operations into Fileops module
X-Git-Url: https://git.rkrishnan.org/pf/content/en/seg/bcase/architecture.txt?a=commitdiff_plain;h=5b606c972c65d9b7df3e415c2cfc0f0c3585e71c;p=functorrent.git

refactor file operations into Fileops module
---

diff --git a/src/FuncTorrent/Fileops.hs b/src/FuncTorrent/Fileops.hs
new file mode 100644
index 0000000..f1bbefe
--- /dev/null
+++ b/src/FuncTorrent/Fileops.hs
@@ -0,0 +1,21 @@
+module FuncTorrent.Fileops
+       (createDummyFile,
+        writeFileAtOffset
+       ) where
+
+import Prelude hiding (writeFile)
+
+import System.IO (withFile, hSeek, IOMode(..), SeekMode(..))
+import Data.ByteString (ByteString, writeFile, hPut)
+import qualified Data.ByteString.Char8 as BC (replicate)
+
+createDummyFile :: FilePath -> Int -> IO ()
+createDummyFile path size =
+  writeFile path (BC.replicate size '\0')
+
+-- write into a file at a specific offet
+writeFileAtOffset :: FilePath -> Integer -> ByteString -> IO ()
+writeFileAtOffset path offset block =
+  withFile path ReadWriteMode (\h -> do
+                                  hSeek h AbsoluteSeek offset
+                                  hPut h block)
diff --git a/src/FuncTorrent/Peer.hs b/src/FuncTorrent/Peer.hs
index baf9ce8..f7ccfcf 100644
--- a/src/FuncTorrent/Peer.hs
+++ b/src/FuncTorrent/Peer.hs
@@ -4,10 +4,10 @@ module FuncTorrent.Peer
      handlePeerMsgs
     ) where
 
-import Prelude hiding (lookup, concat, replicate, splitAt, writeFile, take)
+import Prelude hiding (lookup, concat, replicate, splitAt, take)
 
-import System.IO (Handle, BufferMode(..), IOMode(..), SeekMode(..), withFile, hSeek, hSetBuffering)
-import Data.ByteString (ByteString, pack, unpack, concat, hGet, hPut, singleton, writeFile, take, empty)
+import System.IO (Handle, BufferMode(..), hSetBuffering)
+import Data.ByteString (ByteString, pack, unpack, concat, hGet, hPut, singleton, take, empty)
 import Data.ByteString.Lazy (fromStrict, fromChunks, toStrict)
 import qualified Data.ByteString.Char8 as BC (replicate, pack, length)
 import Network (connectTo, PortID(..))
@@ -23,6 +23,7 @@ import qualified Crypto.Hash.SHA1 as SHA1 (hash)
 
 import FuncTorrent.Metainfo (Info(..), Metainfo(..))
 import FuncTorrent.Utils (splitN, splitNum)
+import FuncTorrent.Fileops (createDummyFile, writeFileAtOffset)
 
 type ID = String
 type IP = String
@@ -185,17 +186,6 @@ bitfieldToList bs = go bs 0
           in
            setBits ++ go bs' (pos + 1)
 
-createDummyFile :: FilePath -> Int -> IO ()
-createDummyFile path size =
-  writeFile path (BC.replicate size '\0')
-
--- write into a file at a specific offet
-writeFileAtOffset :: FilePath -> Integer -> ByteString -> IO ()
-writeFileAtOffset path offset block =
-  withFile path ReadWriteMode (\h -> do
-                                  _ <- hSeek h AbsoluteSeek offset
-                                  hPut h block)
-
 -- recvMsg :: Peer -> Handle -> Msg
 msgLoop :: PeerState -> PieceMap -> IO ()
 msgLoop pState pieceStatus | not (meInterested pState) && heChoking pState = do