LIB: cleanup

src/Data/DirTree.hs

@@ -225,11 +225,6 @@ data FileInfo = FileInfo {
 } deriving (Show, Eq, Ord)
 
 
-type UserIO a t = Path Abs -> IO a
-
-type Builder a t = UserIO a t -> Path Abs -> IO [File a]
-
-
 
 
     ------------------------------------
@@ -428,7 +423,7 @@ readWith ff p = do
       bd = P.dirname p
       p' = P.toFilePath p
   bd' <- P.canonicalizePath bd -- TODO: this will cause a dialog to pop up on error
-  handleDT' bd' fn $ do
+  handleDT bd' fn $ do
     fs   <- PF.getSymbolicLinkStatus p'
     fv   <- ff p
     file <- constructFile fs fv bd' fn
@@ -440,7 +435,7 @@ readWith ff p = do
           -- AnchoredFile
           let fp = bd' P.</> fn'
           x <- PF.readSymbolicLink (P.fromAbs fp)
-          resolvedSyml <- handleDT' bd' fn' $ do
+          resolvedSyml <- handleDT bd' fn' $ do
             -- watch out, we call </> from 'filepath' here, but it is safe
             -- TODO: could it happen that too many '..' lead
             -- to something like '/' after normalization?
@@ -592,29 +587,6 @@ isSocketC _            = False
 
 
 
----- PATH CONVERSIONS ----
-
-
-
--- |Check whether the given file is a hidden file.
-hiddenFile :: Path Fn -> Bool
-hiddenFile (Path ".")  = False
-hiddenFile (Path "..") = False
-hiddenFile (Path fn)   = "." `isPrefixOf` fn
-
-
--- |Like `normalise` from System.FilePath but removes occurences of '..'.
--- Note that this sort of misbehaves if the path contains symlink
--- components.
-normalize :: FilePath -> FilePath
-normalize fp =
-  joinPath $ foldl' ff [] (splitDirectories . normalise $ fp)
-  where
-    ff ["/"] ".." = ["/"]
-    ff x ".."     = initDef [] x
-    ff x y        = x ++ [y]
-
-
 
 ---- IO HELPERS: ----
 
@@ -693,35 +665,18 @@ getFileInfo fp = do
     (PF.statusChangeTimeHiRes fs)
 
 
--- |Gets the free variable. Returns Nothing if the constructor is of `Failed`.
-getFreeVar :: File a -> Maybe a
-getFreeVar (Dir _  d)         = Just d
-getFreeVar (RegFile _  d)     = Just d
-getFreeVar (SymLink _  d _ _) = Just d
-getFreeVar (BlockDev _  d)    = Just d
-getFreeVar (CharDev _  d)     = Just d
-getFreeVar (NamedPipe _  d)   = Just d
-getFreeVar (Socket _  d)      = Just d
-getFreeVar _                  = Nothing
-
 
 ---- FAILURE HELPERS: ----
 
 
--- handles an IO exception by returning a Failed constructor filled with that
--- exception:
-handleDT :: Path Fn -> IO (File a) -> IO (File a)
-handleDT n = handle (return . Failed n)
-
-
--- handles an IO exception by returning a Failed constructor filled with that
--- exception:
+-- Handles an IO exception by returning a Failed constructor filled with that
+-- exception.
 -- TODO: only handle IO exceptions
-handleDT' :: Path Abs
+handleDT :: Path Abs
          -> Path Fn
          -> IO (AnchoredFile a)
          -> IO (AnchoredFile a)
-handleDT' bp n
+handleDT bp n
   = handle (\e -> return $ bp :/ Failed n e)
 
 
@@ -742,7 +697,7 @@ removeNonexistent = filter isOkConstructor
 
 
 -- |Checks if a symlink is broken by examining the constructor of the
--- symlink destination. This also follows the symlink chain.
+-- symlink destination.
 --
 -- When called on a non-symlink, returns False.
 isBrokenSymlink :: File FileInfo -> Bool
@@ -753,9 +708,11 @@ isBrokenSymlink _ = False
 ---- OTHER: ----
 
 
-
-fullPath :: AnchoredFile a -> Path Abs
-fullPath (bp :/ f) = bp P.</> name f
+-- |Check whether the given file is a hidden file.
+hiddenFile :: Path Fn -> Bool
+hiddenFile (Path ".")  = False
+hiddenFile (Path "..") = False
+hiddenFile (Path fn)   = "." `isPrefixOf` fn
 
 
 -- |Apply a function on the free variable. If there is no free variable
@@ -764,12 +721,33 @@ fromFreeVar :: (Default d) => (a -> d) -> File a -> d
 fromFreeVar f df = maybeD f $ getFreeVar df
 
 
+-- |Gets the free variable. Returns Nothing if the constructor is of `Failed`.
+getFreeVar :: File a -> Maybe a
+getFreeVar (Dir _  d)         = Just d
+getFreeVar (RegFile _  d)     = Just d
+getFreeVar (SymLink _  d _ _) = Just d
+getFreeVar (BlockDev _  d)    = Just d
+getFreeVar (CharDev _  d)     = Just d
+getFreeVar (NamedPipe _  d)   = Just d
+getFreeVar (Socket _  d)      = Just d
+getFreeVar _                  = Nothing
+
+
+-- |Get the full path of the file.
+fullPath :: AnchoredFile a -> Path Abs
+fullPath (bp :/ f) = bp P.</> name f
+
+
+-- |Get the full path of the file, converted to a `FilePath`.
+fullPathS :: AnchoredFile a -> FilePath
+fullPathS = P.fromAbs . fullPath
 
 
 -- |Pack the modification time into a string.
 packModTime :: File FileInfo
             -> String
-packModTime = fromFreeVar
+packModTime =
+  fromFreeVar
     $ show . posixSecondsToUTCTime . realToFrac . modificationTime