, copyFile -- :: FilePath -> FilePath -> IO ()
, canonicalizePath
+ , makeRelativeToCurrentDirectory
, findExecutable
-- * Existence tests
, getModificationTime -- :: FilePath -> IO ClockTime
) where
-import System.Directory.Internals
+import Prelude hiding ( catch )
+
import System.Environment ( getEnv )
-import System.IO.Error
+import System.FilePath
+import System.IO
+import System.IO.Error hiding ( catch, try )
import Control.Monad ( when, unless )
+import Control.Exception
#ifdef __NHC__
import Directory
-import NHC.FFI
+import System (system)
#endif /* __NHC__ */
#ifdef __HUGS__
import Hugs.Directory
#endif /* __HUGS__ */
-#ifdef __GLASGOW_HASKELL__
-import Prelude
+import Foreign
+import Foreign.C
+
+{-# CFILES cbits/directory.c #-}
-import Control.Exception ( bracket )
+#ifdef __GLASGOW_HASKELL__
import System.Posix.Types
import System.Posix.Internals
import System.Time ( ClockTime(..) )
-import System.IO
-import Foreign
-import Foreign.C
import GHC.IOBase ( IOException(..), IOErrorType(..), ioException )
reference to a file system object (file, directory etc.). Some
entries may be hidden, inaccessible, or have some administrative
function (e.g. `.' or `..' under POSIX
-<http://www.opengroup.org/onlinepubs/007904975/toc.htm>), but in
+<http://www.opengroup.org/onlinepubs/009695399/>), but in
this standard all such entries are considered to form part of the
directory contents. Entries in sub-directories are not, however,
considered to form part of the directory contents.
getPermissions :: FilePath -> IO Permissions
getPermissions name = do
withCString name $ \s -> do
+#ifdef mingw32_HOST_OS
+ -- stat() does a better job of guessing the permissions on Windows
+ -- than access() does. e.g. for execute permission, it looks at the
+ -- filename extension :-)
+ --
+ -- I tried for a while to do this properly, using the Windows security API,
+ -- and eventually gave up. getPermissions is a flawed API anyway. -- SimonM
+ allocaBytes sizeof_stat $ \ p_stat -> do
+ throwErrnoIfMinus1_ "getPermissions" $ c_stat s p_stat
+ mode <- st_mode p_stat
+ let read = mode .&. s_IRUSR
+ let write = mode .&. s_IWUSR
+ let exec = mode .&. s_IXUSR
+ let is_dir = mode .&. s_IFDIR
+ return (
+ Permissions {
+ readable = read /= 0,
+ writable = write /= 0,
+ executable = is_dir == 0 && exec /= 0,
+ searchable = is_dir /= 0 && exec /= 0
+ }
+ )
+#else
read <- c_access s r_OK
write <- c_access s w_OK
exec <- c_access s x_OK
searchable = is_dir && exec == 0
}
)
+#endif
{- |The 'setPermissions' operation sets the
permissions for the file or directory.
withCString path $ \s -> do
throwErrnoIfMinus1Retry_ "createDirectory" $
mkdir s 0o777
+
+#else /* !__GLASGOW_HASKELL__ */
+
+copyPermissions :: FilePath -> FilePath -> IO ()
+copyPermissions fromFPath toFPath
+ = getPermissions fromFPath >>= setPermissions toFPath
+
#endif
-- | @'createDirectoryIfMissing' parents dir@ creates a new directory
-> IO ()
createDirectoryIfMissing parents file = do
b <- doesDirectoryExist file
- case (b,parents, file) of
+ case (b,parents, file) of
(_, _, "") -> return ()
(True, _, _) -> return ()
- (_, True, _) -> mapM_ (createDirectoryIfMissing False) (tail (pathParents file))
+ (_, True, _) -> mapM_ (createDirectoryIfMissing False) $ mkParents file
(_, False, _) -> createDirectory file
+ where mkParents = scanl1 (</>) . splitDirectories . normalise
#if __GLASGOW_HASKELL__
{- | @'removeDirectory' dir@ removes an existing directory /dir/. The
removeDirectoryRecursive :: FilePath -> IO ()
removeDirectoryRecursive startLoc = do
cont <- getDirectoryContents startLoc
- sequence_ [rm (startLoc `joinFileName` x) | x <- cont, x /= "." && x /= ".."]
+ sequence_ [rm (startLoc </> x) | x <- cont, x /= "." && x /= ".."]
removeDirectory startLoc
where
rm :: FilePath -> IO ()
case temp of
Left e -> do isDir <- doesDirectoryExist f
-- If f is not a directory, re-throw the error
- unless isDir $ ioError e
+ unless isDir $ throw e
removeDirectoryRecursive f
Right _ -> return ()
{- |@'copyFile' old new@ copies the existing file from /old/ to /new/.
If the /new/ file already exists, it is atomically replaced by the /old/ file.
-Neither path may refer to an existing directory.
+Neither path may refer to an existing directory. The permissions of /old/ are
+copied to /new/, if possible.
-}
+
copyFile :: FilePath -> FilePath -> IO ()
+#ifdef __NHC__
copyFile fromFPath toFPath =
-#if (!(defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ > 600))
- do readFile fromFPath >>= writeFile toFPath
- try (copyPermissions fromFPath toFPath)
- return ()
+ do readFile fromFPath >>= writeFile toFPath
+ try (copyPermissions fromFPath toFPath)
+ return ()
#else
- (bracket (openBinaryFile fromFPath ReadMode) hClose $ \hFrom ->
- bracket (openBinaryFile toFPath WriteMode) hClose $ \hTo ->
- allocaBytes bufferSize $ \buffer -> do
- copyContents hFrom hTo buffer
- try (copyPermissions fromFPath toFPath)
- return ()) `catch` (ioError . changeFunName)
- where
- bufferSize = 1024
-
- changeFunName (IOError h iot fun str mb_fp) = IOError h iot "copyFile" str mb_fp
-
- copyContents hFrom hTo buffer = do
- count <- hGetBuf hFrom buffer bufferSize
- when (count > 0) $ do
- hPutBuf hTo buffer count
- copyContents hFrom hTo buffer
+copyFile fromFPath toFPath =
+ copy `catch` (\e -> case e of
+ IOException e ->
+ throw $ IOException $ ioeSetLocation e "copyFile"
+ _ -> throw e)
+ where copy = bracket (openBinaryFile fromFPath ReadMode) hClose $ \hFrom ->
+ bracketOnError openTmp cleanTmp $ \(tmpFPath, hTmp) ->
+ do allocaBytes bufferSize $ copyContents hFrom hTmp
+ hClose hTmp
+ try (copyPermissions fromFPath tmpFPath)
+ renameFile tmpFPath toFPath
+ openTmp = openBinaryTempFile (takeDirectory toFPath) ".copyFile.tmp"
+ cleanTmp (tmpFPath, hTmp) = do try $ hClose hTmp
+ try $ removeFile tmpFPath
+ bufferSize = 1024
+
+ copyContents hFrom hTo buffer = do
+ count <- hGetBuf hFrom buffer bufferSize
+ when (count > 0) $ do
+ hPutBuf hTo buffer count
+ copyContents hFrom hTo buffer
#endif
-#ifdef __GLASGOW_HASKELL__
-- | Given path referring to a file or directory, returns a
-- canonicalized path, with the intent that two paths referring
-- to the same file\/directory will map to the same canonicalized
peekCString pOutPath
#if defined(mingw32_HOST_OS)
-foreign import stdcall unsafe "GetFullPathName"
+foreign import stdcall unsafe "GetFullPathNameA"
c_GetFullPathName :: CString
-> CInt
-> CString
-> CString
-> IO CString
#endif
-#else /* !__GLASGOW_HASKELL__ */
--- dummy implementation
-canonicalizePath :: FilePath -> IO FilePath
-canonicalizePath fpath = return fpath
-#endif /* !__GLASGOW_HASKELL__ */
+
+-- | 'makeRelative' the current directory.
+makeRelativeToCurrentDirectory :: FilePath -> IO FilePath
+makeRelativeToCurrentDirectory x = do
+ cur <- getCurrentDirectory
+ return $ makeRelative cur x
-- | Given an executable file name, searches for such file
-- in the directories listed in system PATH. The returned value
-- such executable. For example (findExecutable \"ghc\")
-- gives you the path to GHC.
findExecutable :: String -> IO (Maybe FilePath)
-findExecutable binary = do
+findExecutable binary =
+#if defined(mingw32_HOST_OS)
+ withCString binary $ \c_binary ->
+ withCString ('.':exeExtension) $ \c_ext ->
+ allocaBytes long_path_size $ \pOutPath ->
+ alloca $ \ppFilePart -> do
+ res <- c_SearchPath nullPtr c_binary c_ext (fromIntegral long_path_size) pOutPath ppFilePart
+ if res > 0 && res < fromIntegral long_path_size
+ then do fpath <- peekCString pOutPath
+ return (Just fpath)
+ else return Nothing
+
+foreign import stdcall unsafe "SearchPathA"
+ c_SearchPath :: CString
+ -> CString
+ -> CString
+ -> CInt
+ -> CString
+ -> Ptr CString
+ -> IO CInt
+#else
+ do
path <- getEnv "PATH"
- search (parseSearchPath path)
+ search (splitSearchPath path)
where
- fileName = binary `joinFileExt` exeExtension
+ fileName = binary <.> exeExtension
search :: [FilePath] -> IO (Maybe FilePath)
search [] = return Nothing
search (d:ds) = do
- let path = d `joinFileName` fileName
- b <- doesFileExist path
- if b then return (Just path)
+ let path = d </> fileName
+ b <- doesFileExist path
+ if b then return (Just path)
else search ds
+#endif
+
#ifdef __GLASGOW_HASKELL__
{- |@'getDirectoryContents' dir@ returns a list of /all/ entries
return (s_isdir mode)
fileNameEndClean :: String -> String
-fileNameEndClean name =
- if i > 0 && (ec == '\\' || ec == '/') then
- fileNameEndClean (take i name)
- else
- name
- where
- i = (length name) - 1
- ec = name !! i
-
-foreign import ccall unsafe "__hscore_long_path_size"
- long_path_size :: Int
+fileNameEndClean name = if isDrive name then addTrailingPathSeparator name
+ else dropTrailingPathSeparator name
-foreign import ccall unsafe "__hscore_R_OK" r_OK :: CMode
-foreign import ccall unsafe "__hscore_W_OK" w_OK :: CMode
-foreign import ccall unsafe "__hscore_X_OK" x_OK :: CMode
+foreign import ccall unsafe "__hscore_R_OK" r_OK :: CInt
+foreign import ccall unsafe "__hscore_W_OK" w_OK :: CInt
+foreign import ccall unsafe "__hscore_X_OK" x_OK :: CInt
foreign import ccall unsafe "__hscore_S_IRUSR" s_IRUSR :: CMode
foreign import ccall unsafe "__hscore_S_IWUSR" s_IWUSR :: CMode
foreign import ccall unsafe "__hscore_S_IXUSR" s_IXUSR :: CMode
+foreign import ccall unsafe "__hscore_S_IFDIR" s_IFDIR :: CMode
+
+foreign import ccall unsafe "__hscore_long_path_size"
+ long_path_size :: Int
+
+#else
+long_path_size :: Int
+long_path_size = 2048 -- // guess?
#endif /* __GLASGOW_HASKELL__ */
-}
getHomeDirectory :: IO FilePath
getHomeDirectory =
-#if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
+#if defined(mingw32_HOST_OS)
allocaBytes long_path_size $ \pPath -> do
r <- c_SHGetFolderPath nullPtr csidl_PROFILE nullPtr 0 pPath
if (r < 0)
-}
getAppUserDataDirectory :: String -> IO FilePath
getAppUserDataDirectory appName = do
-#if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
+#if defined(mingw32_HOST_OS)
allocaBytes long_path_size $ \pPath -> do
r <- c_SHGetFolderPath nullPtr csidl_APPDATA nullPtr 0 pPath
when (r<0) (raiseUnsupported "System.Directory.getAppUserDataDirectory")
-}
getUserDocumentsDirectory :: IO FilePath
getUserDocumentsDirectory = do
-#if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
+#if defined(mingw32_HOST_OS)
allocaBytes long_path_size $ \pPath -> do
r <- c_SHGetFolderPath nullPtr csidl_PERSONAL nullPtr 0 pPath
when (r<0) (raiseUnsupported "System.Directory.getUserDocumentsDirectory")
-}
getTemporaryDirectory :: IO FilePath
getTemporaryDirectory = do
-#if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
+#if defined(mingw32_HOST_OS)
allocaBytes long_path_size $ \pPath -> do
r <- c_GetTempPath (fromIntegral long_path_size) pPath
peekCString pPath
catch (getEnv "TMPDIR") (\ex -> return "/tmp")
#endif
-#if __GLASGOW_HASKELL__ && defined(mingw32_HOST_OS)
+#if defined(mingw32_HOST_OS)
foreign import ccall unsafe "__hscore_getFolderPath"
c_SHGetFolderPath :: Ptr ()
-> CInt
foreign import ccall unsafe "__hscore_CSIDL_WINDOWS" csidl_WINDOWS :: CInt
foreign import ccall unsafe "__hscore_CSIDL_PERSONAL" csidl_PERSONAL :: CInt
-foreign import stdcall unsafe "GetTempPath" c_GetTempPath :: CInt -> CString -> IO CInt
+foreign import stdcall unsafe "GetTempPathA" c_GetTempPath :: CInt -> CString -> IO CInt
raiseUnsupported loc =
ioException (IOError Nothing UnsupportedOperation loc "unsupported operation" Nothing)
#endif
+
+-- ToDo: This should be determined via autoconf (AC_EXEEXT)
+-- | Extension for executable files
+-- (typically @\"\"@ on Unix and @\"exe\"@ on Windows or OS\/2)
+exeExtension :: String
+#ifdef mingw32_HOST_OS
+exeExtension = "exe"
+#else
+exeExtension = ""
+#endif
+
projects / haskell-directory.git / blobdiff