import Control.Exception.Base
#ifdef __NHC__
-import Directory
+import Directory hiding ( getDirectoryContents
+ , doesDirectoryExist, doesFileExist
+ , getModificationTime )
import System (system)
#endif /* __NHC__ */
{-# CFILES cbits/directory.c #-}
-#ifdef __GLASGOW_HASKELL__
-import System.Posix.Types
-import System.Posix.Internals
import System.Time ( ClockTime(..) )
+#ifdef __GLASGOW_HASKELL__
+
+#if __GLASGOW_HASKELL__ >= 611
+import GHC.IO.Exception ( IOException(..), IOErrorType(..), ioException )
+#else
import GHC.IOBase ( IOException(..), IOErrorType(..), ioException )
+#endif
#ifdef mingw32_HOST_OS
-import qualified System.Win32
+import System.Posix.Types
+import System.Posix.Internals
+import qualified System.Win32 as Win32
#else
-import qualified System.Posix
+import qualified System.Posix as Posix
#endif
{- $intro
getPermissions :: FilePath -> IO Permissions
getPermissions name = do
- withCString name $ \s -> do
#ifdef mingw32_HOST_OS
+ withFilePath name $ \s -> do
-- 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 :-)
}
)
#else
- read_ok <- c_access s r_OK
- write_ok <- c_access s w_OK
- exec_ok <- c_access s x_OK
- withFileStatus "getPermissions" name $ \st -> do
- is_dir <- isDirectory st
+ read_ok <- Posix.fileAccess name True False False
+ write_ok <- Posix.fileAccess name False True False
+ exec_ok <- Posix.fileAccess name False False True
+ stat <- Posix.getFileStatus name
+ let is_dir = Posix.fileMode stat .&. Posix.directoryMode /= 0
return (
Permissions {
- readable = read_ok == 0,
- writable = write_ok == 0,
- executable = not is_dir && exec_ok == 0,
- searchable = is_dir && exec_ok == 0
+ readable = read_ok,
+ writable = write_ok,
+ executable = not is_dir && exec_ok,
+ searchable = is_dir && exec_ok
}
)
#endif
setPermissions :: FilePath -> Permissions -> IO ()
setPermissions name (Permissions r w e s) = do
+#ifdef mingw32_HOST_OS
allocaBytes sizeof_stat $ \ p_stat -> do
- withCString name $ \p_name -> do
+ withFilePath name $ \p_name -> do
throwErrnoIfMinus1_ "setPermissions" $ do
c_stat p_name p_stat
mode <- st_mode p_stat
let mode1 = modifyBit r mode s_IRUSR
let mode2 = modifyBit w mode1 s_IWUSR
let mode3 = modifyBit (e || s) mode2 s_IXUSR
- c_chmod p_name mode3
-
+ c_wchmod p_name mode3
where
modifyBit :: Bool -> CMode -> CMode -> CMode
modifyBit False m b = m .&. (complement b)
modifyBit True m b = m .|. b
+#else
+ stat <- Posix.getFileStatus name
+ let mode = Posix.fileMode stat
+ let mode1 = modifyBit r mode Posix.ownerReadMode
+ let mode2 = modifyBit w mode1 Posix.ownerWriteMode
+ let mode3 = modifyBit (e || s) mode2 Posix.ownerExecuteMode
+ Posix.setFileMode name mode3
+ where
+ modifyBit :: Bool -> Posix.FileMode -> Posix.FileMode -> Posix.FileMode
+ modifyBit False m b = m .&. (complement b)
+ modifyBit True m b = m .|. b
+#endif
+#ifdef mingw32_HOST_OS
+foreign import ccall unsafe "_wchmod"
+ c_wchmod :: CWString -> CMode -> IO CInt
+#endif
copyPermissions :: FilePath -> FilePath -> IO ()
copyPermissions source dest = do
+#ifdef mingw32_HOST_OS
allocaBytes sizeof_stat $ \ p_stat -> do
- withCString source $ \p_source -> do
- withCString dest $ \p_dest -> do
+ withFilePath source $ \p_source -> do
+ withFilePath dest $ \p_dest -> do
throwErrnoIfMinus1_ "copyPermissions" $ c_stat p_source p_stat
mode <- st_mode p_stat
- throwErrnoIfMinus1_ "copyPermissions" $ c_chmod p_dest mode
+ throwErrnoIfMinus1_ "copyPermissions" $ c_wchmod p_dest mode
+#else
+ stat <- Posix.getFileStatus source
+ let mode = Posix.fileMode stat
+ Posix.setFileMode dest mode
+#endif
-----------------------------------------------------------------------------
-- Implementation
createDirectory :: FilePath -> IO ()
createDirectory path = do
#ifdef mingw32_HOST_OS
- System.Win32.createDirectory path Nothing
+ Win32.createDirectory path Nothing
#else
- System.Posix.createDirectory path 0o777
+ Posix.createDirectory path 0o777
#endif
#else /* !__GLASGOW_HASKELL__ */
-- between a dir already existing and a file already existing. So we
-- check for it here. Unfortunately there is a slight race condition
-- here, but we think it is benign. It could report an exeption in
- -- the case that the dir did exist but another process deletes it
- -- before we can check that it did indeed exist.
- | isAlreadyExistsError e -> do exists <- doesDirectoryExist dir
- if exists then return ()
- else throw e
+ -- the case that the dir did exist but another process deletes the
+ -- directory and creates a file in its place before we can check
+ -- that the directory did indeed exist.
+ | isAlreadyExistsError e -> (do
+#ifdef mingw32_HOST_OS
+ withFileStatus "createDirectoryIfMissing" dir $ \st -> do
+ isDir <- isDirectory st
+ if isDir then return ()
+ else throw e
+#else
+ stat <- Posix.getFileStatus dir
+ if Posix.fileMode stat .&. Posix.directoryMode /= 0
+ then return ()
+ else throw e
+#endif
+ ) `catch` ((\_ -> return ()) :: IOException -> IO ())
| otherwise -> throw e
#if __GLASGOW_HASKELL__
removeDirectory :: FilePath -> IO ()
removeDirectory path =
#ifdef mingw32_HOST_OS
- System.Win32.removeDirectory path
+ Win32.removeDirectory path
#else
- System.Posix.removeDirectory path
+ Posix.removeDirectory path
#endif
#endif
removeFile :: FilePath -> IO ()
removeFile path =
#if mingw32_HOST_OS
- System.Win32.deleteFile path
+ Win32.deleteFile path
#else
- System.Posix.removeLink path
+ Posix.removeLink path
#endif
{- |@'renameDirectory' old new@ changes the name of an existing
-}
renameDirectory :: FilePath -> FilePath -> IO ()
-renameDirectory opath npath =
+renameDirectory opath npath = do
-- XXX this test isn't performed atomically with the following rename
+#ifdef mingw32_HOST_OS
+ -- ToDo: use Win32 API
withFileStatus "renameDirectory" opath $ \st -> do
is_dir <- isDirectory st
+#else
+ stat <- Posix.getFileStatus opath
+ let is_dir = Posix.fileMode stat .&. Posix.directoryMode /= 0
+#endif
if (not is_dir)
then ioException (ioeSetErrorString
(mkIOError InappropriateType "renameDirectory" Nothing (Just opath))
"not a directory")
else do
#ifdef mingw32_HOST_OS
- System.Win32.moveFileEx opath npath System.Win32.mOVEFILE_REPLACE_EXISTING
+ Win32.moveFileEx opath npath Win32.mOVEFILE_REPLACE_EXISTING
#else
- System.Posix.rename opath npath
+ Posix.rename opath npath
#endif
{- |@'renameFile' old new@ changes the name of an existing file system
-}
renameFile :: FilePath -> FilePath -> IO ()
-renameFile opath npath =
+renameFile opath npath = do
-- XXX this test isn't performed atomically with the following rename
+#ifdef mingw32_HOST_OS
+ -- ToDo: use Win32 API
withFileOrSymlinkStatus "renameFile" opath $ \st -> do
is_dir <- isDirectory st
+#else
+ stat <- Posix.getSymbolicLinkStatus opath
+ let is_dir = Posix.fileMode stat .&. Posix.directoryMode /= 0
+#endif
if is_dir
then ioException (ioeSetErrorString
(mkIOError InappropriateType "renameFile" Nothing (Just opath))
"is a directory")
else do
#ifdef mingw32_HOST_OS
- System.Win32.moveFileEx opath npath System.Win32.mOVEFILE_REPLACE_EXISTING
+ Win32.moveFileEx opath npath Win32.mOVEFILE_REPLACE_EXISTING
#else
- System.Posix.rename opath npath
+ Posix.rename opath npath
#endif
#endif /* __GLASGOW_HASKELL__ */
-- attempt.
canonicalizePath :: FilePath -> IO FilePath
canonicalizePath fpath =
- withCString fpath $ \pInPath ->
- allocaBytes long_path_size $ \pOutPath ->
#if defined(mingw32_HOST_OS)
- alloca $ \ppFilePart ->
- do c_GetFullPathName pInPath (fromIntegral long_path_size) pOutPath ppFilePart
+ do path <- Win32.getFullPathName fpath
#else
+ withCString fpath $ \pInPath ->
+ allocaBytes long_path_size $ \pOutPath ->
do c_realpath pInPath pOutPath
-#endif
path <- peekCString pOutPath
+#endif
return (normalise path)
-- normalise does more stuff, like upper-casing the drive letter
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
--- is the path to the found executable or Nothing if there isn't
--- such executable. For example (findExecutable \"ghc\")
--- gives you the path to GHC.
+-- | Given an executable file name, searches for such file in the
+-- directories listed in system PATH. The returned value is the path
+-- to the found executable or Nothing if an executable with the given
+-- name was not found. For example (findExecutable \"ghc\") gives you
+-- the path to GHC.
+--
+-- The path returned by 'findExecutable' corresponds to the
+-- program that would be executed by 'System.Process.createProcess'
+-- when passed the same string (as a RawCommand, not a ShellCommand).
+--
+-- On Windows, 'findExecutable' calls the Win32 function 'SearchPath',
+-- which may search other places before checking the directories in
+-- @PATH@. Where it actually searches depends on registry settings,
+-- but notably includes the directory containing the current
+-- executable. See
+-- <http://msdn.microsoft.com/en-us/library/aa365527.aspx> for more
+-- details.
+--
findExecutable :: String -> IO (Maybe FilePath)
findExecutable binary =
#if defined(mingw32_HOST_OS)
#endif
-#ifdef __GLASGOW_HASKELL__
+#ifndef __HUGS__
{- |@'getDirectoryContents' dir@ returns a list of /all/ entries
in /dir/.
-}
getDirectoryContents :: FilePath -> IO [FilePath]
-getDirectoryContents path = do
- modifyIOError (`ioeSetFileName` path) $
- alloca $ \ ptr_dEnt ->
- bracket
- (withCString path $ \s ->
- throwErrnoIfNullRetry desc (c_opendir s))
- (\p -> throwErrnoIfMinus1_ desc (c_closedir p))
- (\p -> loop ptr_dEnt p)
+getDirectoryContents path =
+ modifyIOError ((`ioeSetFileName` path) .
+ (`ioeSetLocation` "getDirectoryContents")) $ do
+#ifndef mingw32_HOST_OS
+ bracket
+ (Posix.openDirStream path)
+ Posix.closeDirStream
+ loop
+ where
+ loop dirp = do
+ e <- Posix.readDirStream dirp
+ if null e then return [] else do
+ es <- loop dirp
+ return (e:es)
+#else
+ bracket
+ (Win32.findFirstFile (path </> "*"))
+ (\(h,_) -> Win32.findClose h)
+ (\(h,fdat) -> loop h fdat [])
where
- desc = "getDirectoryContents"
-
- loop :: Ptr (Ptr CDirent) -> Ptr CDir -> IO [String]
- loop ptr_dEnt dir = do
- resetErrno
- r <- readdir dir ptr_dEnt
- if (r == 0)
- then do
- dEnt <- peek ptr_dEnt
- if (dEnt == nullPtr)
- then return []
- else do
- entry <- (d_name dEnt >>= peekCString)
- freeDirEnt dEnt
- entries <- loop ptr_dEnt dir
- return (entry:entries)
- else do errno <- getErrno
- if (errno == eINTR) then loop ptr_dEnt dir else do
- let (Errno eo) = errno
- if (eo == end_of_dir)
- then return []
- else throwErrno desc
+ -- we needn't worry about empty directories: adirectory always
+ -- has at least "." and ".." entries
+ loop :: Win32.HANDLE -> Win32.FindData -> [FilePath] -> IO [FilePath]
+ loop h fdat acc = do
+ filename <- Win32.getFindDataFileName fdat
+ more <- Win32.findNextFile h fdat
+ if more
+ then loop h fdat (filename:acc)
+ else return (filename:acc)
+ -- no need to reverse, ordering is undefined
+#endif /* mingw32 */
+#endif /* !__HUGS__ */
{- |If the operating system has a notion of current directories,
The operating system has no notion of current directory.
-}
-
+#ifdef __GLASGOW_HASKELL__
getCurrentDirectory :: IO FilePath
getCurrentDirectory = do
#ifdef mingw32_HOST_OS
- -- XXX: should use something from Win32
- p <- mallocBytes long_path_size
- go p long_path_size
- where go p bytes = do
- p' <- c_getcwd p (fromIntegral bytes)
- if p' /= nullPtr
- then do s <- peekCString p'
- free p'
- return s
- else do errno <- getErrno
- if errno == eRANGE
- then do let bytes' = bytes * 2
- p'' <- reallocBytes p bytes'
- go p'' bytes'
- else throwErrno "getCurrentDirectory"
+ Win32.getCurrentDirectory
#else
- System.Posix.getWorkingDirectory
-#endif
-
-#ifdef mingw32_HOST_OS
-foreign import ccall unsafe "getcwd"
- c_getcwd :: Ptr CChar -> CSize -> IO (Ptr CChar)
+ Posix.getWorkingDirectory
#endif
{- |If the operating system has a notion of current directories,
setCurrentDirectory :: FilePath -> IO ()
setCurrentDirectory path =
#ifdef mingw32_HOST_OS
- System.Win32.setCurrentDirectory path
+ Win32.setCurrentDirectory path
#else
- System.Posix.changeWorkingDirectory path
+ Posix.changeWorkingDirectory path
#endif
+#endif /* __GLASGOW_HASKELL__ */
+
+#ifndef __HUGS__
{- |The operation 'doesDirectoryExist' returns 'True' if the argument file
exists and is a directory, and 'False' otherwise.
-}
doesDirectoryExist :: FilePath -> IO Bool
doesDirectoryExist name =
+#ifdef mingw32_HOST_OS
(withFileStatus "doesDirectoryExist" name $ \st -> isDirectory st)
+#else
+ (do stat <- Posix.getFileStatus name
+ return (Posix.fileMode stat .&. Posix.directoryMode /= 0))
+#endif
`catch` ((\ _ -> return False) :: IOException -> IO Bool)
{- |The operation 'doesFileExist' returns 'True'
doesFileExist :: FilePath -> IO Bool
doesFileExist name =
+#ifdef mingw32_HOST_OS
(withFileStatus "doesFileExist" name $ \st -> do b <- isDirectory st; return (not b))
+#else
+ (do stat <- Posix.getFileStatus name
+ return (Posix.fileMode stat .&. Posix.directoryMode == 0))
+#endif
`catch` ((\ _ -> return False) :: IOException -> IO Bool)
{- |The 'getModificationTime' operation returns the
-}
getModificationTime :: FilePath -> IO ClockTime
-getModificationTime name =
- withFileStatus "getModificationTime" name $ \ st ->
+getModificationTime name = do
+#ifdef mingw32_HOST_OS
+ -- ToDo: use Win32 API
+ withFileStatus "getModificationTime" name $ \ st -> do
modificationTime st
+#else
+ stat <- Posix.getFileStatus name
+ let realToInteger = round . realToFrac :: Real a => a -> Integer
+ return (TOD (realToInteger (Posix.modificationTime stat)) 0)
+#endif
+
+#endif /* !__HUGS__ */
+
+#ifdef mingw32_HOST_OS
withFileStatus :: String -> FilePath -> (Ptr CStat -> IO a) -> IO a
withFileStatus loc name f = do
modifyIOError (`ioeSetFileName` name) $
allocaBytes sizeof_stat $ \p ->
- withCString (fileNameEndClean name) $ \s -> do
+ withFilePath (fileNameEndClean name) $ \s -> do
throwErrnoIfMinus1Retry_ loc (c_stat s p)
f p
withFileOrSymlinkStatus loc name f = do
modifyIOError (`ioeSetFileName` name) $
allocaBytes sizeof_stat $ \p ->
- withCString name $ \s -> do
+ withFilePath name $ \s -> do
throwErrnoIfMinus1Retry_ loc (lstat s p)
f p
fileNameEndClean name = if isDrive name then addTrailingPathSeparator name
else dropTrailingPathSeparator name
-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 "HsDirectory.h __hscore_R_OK" r_OK :: CInt
+foreign import ccall unsafe "HsDirectory.h __hscore_W_OK" w_OK :: CInt
+foreign import ccall unsafe "HsDirectory.h __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
-#ifdef mingw32_HOST_OS
+foreign import ccall unsafe "HsDirectory.h __hscore_S_IRUSR" s_IRUSR :: CMode
+foreign import ccall unsafe "HsDirectory.h __hscore_S_IWUSR" s_IWUSR :: CMode
+foreign import ccall unsafe "HsDirectory.h __hscore_S_IXUSR" s_IXUSR :: CMode
foreign import ccall unsafe "__hscore_S_IFDIR" s_IFDIR :: CMode
#endif
+
+#ifdef __GLASGOW_HASKELL__
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__ */
{- | Returns the current user's home directory.
getTemporaryDirectory :: IO FilePath
getTemporaryDirectory = do
#if defined(mingw32_HOST_OS)
- allocaBytes long_path_size $ \pPath -> do
- _r <- c_GetTempPath (fromIntegral long_path_size) pPath
- peekCString pPath
+ Win32.getTemporaryDirectory
#else
getEnv "TMPDIR"
#if !__NHC__
foreign import ccall unsafe "__hscore_CSIDL_WINDOWS" csidl_WINDOWS :: CInt
foreign import ccall unsafe "__hscore_CSIDL_PERSONAL" csidl_PERSONAL :: CInt
-foreign import stdcall unsafe "GetTempPathA" c_GetTempPath :: CInt -> CString -> IO CInt
-
raiseUnsupported :: String -> IO ()
raiseUnsupported loc =
ioException (ioeSetErrorString (mkIOError UnsupportedOperation loc Nothing Nothing) "unsupported operation")
#else
exeExtension = ""
#endif
-
projects / haskell-directory.git / blobdiff