5 files changed, 64 insertions, 58 deletions
diff --git a/src/Text/Hakyll/File.hs b/src/Text/Hakyll/File.hs
new file mode 100644
index 0000000..07464ac
--- /dev/null
+++ b/src/Text/Hakyll/File.hs
@@ -0,0 +1,55 @@
+-- | A module containing various function for manipulating and examinating
+--   files and directories.
+module Text.Hakyll.File
+    ( toDestination,
+      toCache,
+      toURL,
+      makeDirectories,
+      getRecursiveContents,
+      isCacheValid
+    ) where
+
+import System.Directory
+import System.FilePath
+import Control.Monad
+
+-- | Convert a relative filepath to a filepath in the destination (_site).
+toDestination :: FilePath -> FilePath
+toDestination path = "_site" </> path
+
+-- | Convert a relative filepath to a filepath in the cache (_cache).
+toCache :: FilePath -> FilePath
+toCache path = "_cache" </> path
+
+-- | Get the url for a given page.
+toURL :: FilePath -> FilePath
+toURL = flip addExtension ".html" . dropExtension
+
+-- | Given a path to a file, try to make the path writable by making
+--   all directories on the path.
+makeDirectories :: FilePath -> IO ()
+makeDirectories path = createDirectoryIfMissing True dir
+    where dir = takeDirectory path
+
+-- | Get all contents of a directory. Note that files starting with a dot (.)
+--   will be ignored.
+getRecursiveContents :: FilePath -> IO [FilePath]
+getRecursiveContents topdir = do
+    names <- getDirectoryContents topdir
+    let properNames = filter isProper names
+    paths <- forM properNames $ \name -> do
+        let path = topdir </> name
+        isDirectory <- doesDirectoryExist path
+        if isDirectory
+            then getRecursiveContents path
+            else return [path]
+    return (concat paths)
+    where isProper = not . (== '.') . head
+
+-- | Check is a cache file is still valid.
+isCacheValid :: FilePath -> [FilePath] -> IO Bool
+isCacheValid cache depends = doesFileExist cache >>= \exists ->
+    if not exists then return False
+                  else do dependsModified <- (mapM getModificationTime depends) >>= return . maximum
+                          cacheModified <- getModificationTime cache
+                          return (cacheModified >= dependsModified)
diff --git a/src/Text/Hakyll/Page.hs b/src/Text/Hakyll/Page.hs
index 1590de2..ae1a2ea 100644
--- a/src/Text/Hakyll/Page.hs
+++ b/src/Text/Hakyll/Page.hs
@@ -15,6 +15,7 @@ import Control.Monad
 import System.FilePath
 import System.IO
 
+import Text.Hakyll.File
 import Text.Hakyll.Util
 import Text.Hakyll.Renderable
 import Text.Pandoc
diff --git a/src/Text/Hakyll/Render.hs b/src/Text/Hakyll/Render.hs
index a94ac2d..87467f7 100644
--- a/src/Text/Hakyll/Render.hs
+++ b/src/Text/Hakyll/Render.hs
@@ -17,7 +17,7 @@ import System.IO
 
 import Text.Hakyll.Page
 import Text.Hakyll.Renderable
-import Text.Hakyll.Util
+import Text.Hakyll.File
 
 -- | Execute an IO action only when the cache is invalid.
 depends :: FilePath -- ^ File to be rendered or created.
diff --git a/src/Text/Hakyll/Renderables.hs b/src/Text/Hakyll/Renderables.hs
index 47ef5db..c79df76 100644
--- a/src/Text/Hakyll/Renderables.hs
+++ b/src/Text/Hakyll/Renderables.hs
@@ -9,9 +9,9 @@ import System.FilePath
 import qualified Data.ByteString.Lazy.Char8 as B
 import qualified Data.Map as M
 import Control.Monad
-import Text.Hakyll.Util
 import Text.Hakyll.Page
 import Text.Hakyll.Renderable
+import Text.Hakyll.File
 
 -- | A custom page.
 data CustomPage = CustomPage 
diff --git a/src/Text/Hakyll/Util.hs b/src/Text/Hakyll/Util.hs
index 35f7b33..aaa2952 100644
--- a/src/Text/Hakyll/Util.hs
+++ b/src/Text/Hakyll/Util.hs
@@ -1,65 +1,23 @@
 module Text.Hakyll.Util 
-    ( toDestination,
-      toCache,
-      toURL,
-      makeDirectories,
-      getRecursiveContents,
-      trim,
+    ( trim,
       split,
-      stripHtml,
-      isCacheValid
+      stripHTML
     ) where
 
-import System.Directory
-import System.FilePath
-import Control.Monad
 import Data.Char
 import Data.List
 
--- | Convert a relative filepath to a filepath in the destination (_site).
-toDestination :: FilePath -> FilePath
-toDestination path = "_site" </> path
-
--- | Convert a relative filepath to a filepath in the cache (_cache).
-toCache :: FilePath -> FilePath
-toCache path = "_cache" </> path
-
--- | Get the url for a given page.
-toURL :: FilePath -> FilePath
-toURL = flip addExtension ".html" . dropExtension
-
--- | Given a path to a file, try to make the path writable by making
---   all directories on the path.
-makeDirectories :: FilePath -> IO ()
-makeDirectories path = createDirectoryIfMissing True dir
-    where dir = takeDirectory path
-
--- | Get all contents of a directory. Note that files starting with a dot (.)
---   will be ignored.
-getRecursiveContents :: FilePath -> IO [FilePath]
-getRecursiveContents topdir = do
-    names <- getDirectoryContents topdir
-    let properNames = filter isProper names
-    paths <- forM properNames $ \name -> do
-        let path = topdir </> name
-        isDirectory <- doesDirectoryExist path
-        if isDirectory
-            then getRecursiveContents path
-            else return [path]
-    return (concat paths)
-    where isProper = not . (== '.') . head
-
 -- | Trim a string (drop spaces and tabs at both sides).
 trim :: String -> String
 trim = reverse . trim' . reverse . trim'
     where trim' = dropWhile isSpace
 
 -- | Strip html tags.
-stripHtml :: String -> String
-stripHtml []  = []
-stripHtml str = let (beforeTag, rest) = break (== '<') str
+stripHTML :: String -> String
+stripHTML []  = []
+stripHTML str = let (beforeTag, rest) = break (== '<') str
                     (_, afterTag)     = break (== '>') rest
-                in beforeTag ++ (stripHtml $ tail' afterTag)
+                in beforeTag ++ (stripHTML $ tail' afterTag)
     -- We need a failsafe tail function.
     where tail' [] = []
           tail' xs = tail xs
@@ -72,11 +30,3 @@ split element = unfoldr splitOnce
                                      (x, xs) -> if null xs
                                                     then Just (x, [])
                                                     else Just (x, tail xs)
-
--- | Check is a cache file is still valid.
-isCacheValid :: FilePath -> [FilePath] -> IO Bool
-isCacheValid cache depends = doesFileExist cache >>= \exists ->
-    if not exists then return False
-                  else do dependsModified <- (mapM getModificationTime depends) >>= return . maximum
-                          cacheModified <- getModificationTime cache
-                          return (cacheModified >= dependsModified)