module Text.Hakyll.File
( toDestination
, toCache
, toURL
, makeDirectories
, getRecursiveContents
, isCacheValid
, directory
) where
import System.Directory
import System.FilePath
import Control.Monad
toDestination :: FilePath -> FilePath
toDestination path = "_site" </> path
toCache :: FilePath -> FilePath
toCache path = "_cache" </> path
toURL :: FilePath -> FilePath
toURL = flip addExtension ".html" . dropExtension
makeDirectories :: FilePath -> IO ()
makeDirectories path = createDirectoryIfMissing True dir
where dir = takeDirectory path
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
directory :: (FilePath -> IO ()) -> FilePath -> IO ()
directory action dir = getRecursiveContents dir >>= mapM_ action
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)