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module Directory
( doesFileExist, doesDirectoryExist, fileSize, getModificationTime
, getCurrentDirectory, setCurrentDirectory
, getDirectoryContents, createDirectory, createDirectoryIfMissing
, removeDirectory, renameDirectory
, getHomeDirectory, getTemporaryDirectory
, getAbsolutePath
, removeFile, renameFile, copyFile
) where
import FilePath (FilePath, (</>), splitDirectories, isAbsolute, normalise)
import List (isPrefixOf, scanl1, last)
import System (getEnviron, isWindows)
import Time (ClockTime)
doesFileExist :: FilePath -> IO Bool
doesFileExist fname = prim_doesFileExist $## fname
prim_doesFileExist :: FilePath -> IO Bool
prim_doesFileExist external
doesDirectoryExist :: FilePath -> IO Bool
doesDirectoryExist dir = prim_doesDirectoryExist $## dir
prim_doesDirectoryExist :: FilePath -> IO Bool
prim_doesDirectoryExist external
fileSize :: FilePath -> IO Int
fileSize fname = prim_fileSize $## fname
prim_fileSize :: FilePath -> IO Int
prim_fileSize external
getModificationTime :: FilePath -> IO ClockTime
getModificationTime fname = prim_getModificationTime $## fname
prim_getModificationTime :: FilePath -> IO ClockTime
prim_getModificationTime external
getCurrentDirectory :: IO FilePath
getCurrentDirectory external
setCurrentDirectory :: FilePath -> IO ()
setCurrentDirectory dir = prim_setCurrentDirectory $## dir
prim_setCurrentDirectory :: FilePath -> IO ()
prim_setCurrentDirectory external
getDirectoryContents :: FilePath -> IO [FilePath]
getDirectoryContents dir = prim_getDirectoryContents $## dir
prim_getDirectoryContents :: FilePath -> IO [FilePath]
prim_getDirectoryContents external
createDirectory :: FilePath -> IO ()
createDirectory dir = prim_createDirectory $## dir
prim_createDirectory :: FilePath -> IO ()
prim_createDirectory external
createDirectoryIfMissing :: Bool -> FilePath -> IO ()
createDirectoryIfMissing createParents path
= if createParents then createDirs parents
else createDirs [last parents]
where
parents = scanl1 (</>) $ splitDirectories $ path
createDirs [] = done
createDirs (d:ds) = do
exists <- doesDirectoryExist d
if exists then done else createDirectory d
createDirs ds
removeDirectory :: FilePath -> IO ()
removeDirectory dir = prim_removeDirectory $## dir
prim_removeDirectory :: FilePath -> IO ()
prim_removeDirectory external
renameDirectory :: FilePath -> FilePath -> IO ()
renameDirectory dir1 dir2 = (prim_renameDirectory $## dir1) $## dir2
prim_renameDirectory :: FilePath -> FilePath -> IO ()
prim_renameDirectory external
getHomeDirectory :: IO FilePath
getHomeDirectory = if isWindows
then getEnviron "USERPROFILE"
else getEnviron "HOME"
getTemporaryDirectory :: IO FilePath
getTemporaryDirectory = if isWindows then getEnviron "TMP" else return "/tmp"
getAbsolutePath :: FilePath -> IO FilePath
getAbsolutePath path
| isAbsolute path = return (normalise path)
| path == "~" = getHomeDirectory
| "~/" `isPrefixOf` path = do homedir <- getHomeDirectory
return (normalise (homedir </> drop 2 path))
| otherwise = do curdir <- getCurrentDirectory
return (normalise (curdir </> path))
removeFile :: FilePath -> IO ()
removeFile file = prim_removeFile $## file
prim_removeFile :: FilePath -> IO ()
prim_removeFile external
renameFile :: FilePath -> FilePath -> IO ()
renameFile file1 file2 = (prim_renameFile $## file1) $## file2
prim_renameFile :: FilePath -> FilePath -> IO ()
prim_renameFile external
copyFile :: FilePath -> FilePath -> IO ()
copyFile src dest = readFile src >>= writeFile dest
|