{-# LINE 1 "libraries/unix/System/Posix/Directory.hsc" #-}
{-# LANGUAGE CApiFFI #-}
{-# LANGUAGE NondecreasingIndentation #-}
{-# LINE 4 "libraries/unix/System/Posix/Directory.hsc" #-}
{-# LANGUAGE Safe #-}
{-# LINE 8 "libraries/unix/System/Posix/Directory.hsc" #-}
{-# LINE 29 "libraries/unix/System/Posix/Directory.hsc" #-}
module System.Posix.Directory (
createDirectory, removeDirectory,
DirStream,
openDirStream,
readDirStream,
rewindDirStream,
closeDirStream,
DirStreamOffset,
{-# LINE 42 "libraries/unix/System/Posix/Directory.hsc" #-}
tellDirStream,
{-# LINE 44 "libraries/unix/System/Posix/Directory.hsc" #-}
{-# LINE 45 "libraries/unix/System/Posix/Directory.hsc" #-}
seekDirStream,
{-# LINE 47 "libraries/unix/System/Posix/Directory.hsc" #-}
getWorkingDirectory,
changeWorkingDirectory,
changeWorkingDirectoryFd,
) where
import System.IO.Error
import System.Posix.Error
import System.Posix.Types
import Foreign
import Foreign.C
import System.Posix.Directory.Common
import System.Posix.Internals (withFilePath, peekFilePath)
createDirectory :: FilePath -> FileMode -> IO ()
createDirectory :: FilePath -> FileMode -> IO ()
createDirectory FilePath
name FileMode
mode =
FilePath -> (CString -> IO ()) -> IO ()
forall a. FilePath -> (CString -> IO a) -> IO a
withFilePath FilePath
name ((CString -> IO ()) -> IO ()) -> (CString -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \CString
s ->
FilePath -> FilePath -> IO CInt -> IO ()
forall a. (Eq a, Num a) => FilePath -> FilePath -> IO a -> IO ()
throwErrnoPathIfMinus1Retry_ FilePath
"createDirectory" FilePath
name (CString -> FileMode -> IO CInt
c_mkdir CString
s FileMode
mode)
foreign import ccall unsafe "mkdir"
c_mkdir :: CString -> CMode -> IO CInt
openDirStream :: FilePath -> IO DirStream
openDirStream :: FilePath -> IO DirStream
openDirStream FilePath
name =
FilePath -> (CString -> IO DirStream) -> IO DirStream
forall a. FilePath -> (CString -> IO a) -> IO a
withFilePath FilePath
name ((CString -> IO DirStream) -> IO DirStream)
-> (CString -> IO DirStream) -> IO DirStream
forall a b. (a -> b) -> a -> b
$ \CString
s -> do
Ptr CDir
dirp <- FilePath -> FilePath -> IO (Ptr CDir) -> IO (Ptr CDir)
forall a. FilePath -> FilePath -> IO (Ptr a) -> IO (Ptr a)
throwErrnoPathIfNullRetry FilePath
"openDirStream" FilePath
name (IO (Ptr CDir) -> IO (Ptr CDir)) -> IO (Ptr CDir) -> IO (Ptr CDir)
forall a b. (a -> b) -> a -> b
$ CString -> IO (Ptr CDir)
c_opendir CString
s
DirStream -> IO DirStream
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (Ptr CDir -> DirStream
DirStream Ptr CDir
dirp)
foreign import capi unsafe "HsUnix.h opendir"
c_opendir :: CString -> IO (Ptr CDir)
readDirStream :: DirStream -> IO FilePath
readDirStream :: DirStream -> IO FilePath
readDirStream (DirStream Ptr CDir
dirp) =
(Ptr (Ptr CDirent) -> IO FilePath) -> IO FilePath
forall a b. Storable a => (Ptr a -> IO b) -> IO b
alloca ((Ptr (Ptr CDirent) -> IO FilePath) -> IO FilePath)
-> (Ptr (Ptr CDirent) -> IO FilePath) -> IO FilePath
forall a b. (a -> b) -> a -> b
$ \Ptr (Ptr CDirent)
ptr_dEnt -> Ptr (Ptr CDirent) -> IO FilePath
loop Ptr (Ptr CDirent)
ptr_dEnt
where
loop :: Ptr (Ptr CDirent) -> IO FilePath
loop Ptr (Ptr CDirent)
ptr_dEnt = do
IO ()
resetErrno
CInt
r <- Ptr CDir -> Ptr (Ptr CDirent) -> IO CInt
c_readdir Ptr CDir
dirp Ptr (Ptr CDirent)
ptr_dEnt
if (CInt
r CInt -> CInt -> Bool
forall a. Eq a => a -> a -> Bool
== CInt
0)
then do Ptr CDirent
dEnt <- Ptr (Ptr CDirent) -> IO (Ptr CDirent)
forall a. Storable a => Ptr a -> IO a
peek Ptr (Ptr CDirent)
ptr_dEnt
if (Ptr CDirent
dEnt Ptr CDirent -> Ptr CDirent -> Bool
forall a. Eq a => a -> a -> Bool
== Ptr CDirent
forall a. Ptr a
nullPtr)
then FilePath -> IO FilePath
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return []
else do
FilePath
entry <- (Ptr CDirent -> IO CString
d_name Ptr CDirent
dEnt IO CString -> (CString -> IO FilePath) -> IO FilePath
forall a b. IO a -> (a -> IO b) -> IO b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= CString -> IO FilePath
peekFilePath)
Ptr CDirent -> IO ()
c_freeDirEnt Ptr CDirent
dEnt
FilePath -> IO FilePath
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return FilePath
entry
else do Errno
errno <- IO Errno
getErrno
if (Errno
errno Errno -> Errno -> Bool
forall a. Eq a => a -> a -> Bool
== Errno
eINTR) then Ptr (Ptr CDirent) -> IO FilePath
loop Ptr (Ptr CDirent)
ptr_dEnt else do
let (Errno CInt
eo) = Errno
errno
if (CInt
eo CInt -> CInt -> Bool
forall a. Eq a => a -> a -> Bool
== CInt
0)
then FilePath -> IO FilePath
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return []
else FilePath -> IO FilePath
forall a. FilePath -> IO a
throwErrno FilePath
"readDirStream"
foreign import ccall unsafe "__hscore_readdir"
c_readdir :: Ptr CDir -> Ptr (Ptr CDirent) -> IO CInt
foreign import ccall unsafe "__hscore_free_dirent"
c_freeDirEnt :: Ptr CDirent -> IO ()
foreign import ccall unsafe "__hscore_d_name"
d_name :: Ptr CDirent -> IO CString
getWorkingDirectory :: IO FilePath
getWorkingDirectory :: IO FilePath
getWorkingDirectory = Int -> IO FilePath
go (Int
4096)
{-# LINE 128 "libraries/unix/System/Posix/Directory.hsc" #-}
where
go :: Int -> IO FilePath
go Int
bytes = do
Maybe FilePath
r <- Int -> (CString -> IO (Maybe FilePath)) -> IO (Maybe FilePath)
forall a b. Int -> (Ptr a -> IO b) -> IO b
allocaBytes Int
bytes ((CString -> IO (Maybe FilePath)) -> IO (Maybe FilePath))
-> (CString -> IO (Maybe FilePath)) -> IO (Maybe FilePath)
forall a b. (a -> b) -> a -> b
$ \CString
buf -> do
CString
buf' <- CString -> CSize -> IO CString
c_getcwd CString
buf (Int -> CSize
forall a b. (Integral a, Num b) => a -> b
fromIntegral Int
bytes)
if CString
buf' CString -> CString -> Bool
forall a. Eq a => a -> a -> Bool
/= CString
forall a. Ptr a
nullPtr
then do FilePath
s <- CString -> IO FilePath
peekFilePath CString
buf
Maybe FilePath -> IO (Maybe FilePath)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return (FilePath -> Maybe FilePath
forall a. a -> Maybe a
Just FilePath
s)
else do Errno
errno <- IO Errno
getErrno
if Errno
errno Errno -> Errno -> Bool
forall a. Eq a => a -> a -> Bool
== Errno
eRANGE
then Maybe FilePath -> IO (Maybe FilePath)
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Maybe FilePath
forall a. Maybe a
Nothing
else FilePath -> IO (Maybe FilePath)
forall a. FilePath -> IO a
throwErrno FilePath
"getWorkingDirectory"
IO FilePath
-> (FilePath -> IO FilePath) -> Maybe FilePath -> IO FilePath
forall b a. b -> (a -> b) -> Maybe a -> b
maybe (Int -> IO FilePath
go (Int
2 Int -> Int -> Int
forall a. Num a => a -> a -> a
* Int
bytes)) FilePath -> IO FilePath
forall a. a -> IO a
forall (m :: * -> *) a. Monad m => a -> m a
return Maybe FilePath
r
foreign import ccall unsafe "getcwd"
c_getcwd :: Ptr CChar -> CSize -> IO (Ptr CChar)
changeWorkingDirectory :: FilePath -> IO ()
changeWorkingDirectory :: FilePath -> IO ()
changeWorkingDirectory FilePath
path =
(IOError -> IOError) -> IO () -> IO ()
forall a. (IOError -> IOError) -> IO a -> IO a
modifyIOError (IOError -> FilePath -> IOError
`ioeSetFileName` FilePath
path) (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$
FilePath -> (CString -> IO ()) -> IO ()
forall a. FilePath -> (CString -> IO a) -> IO a
withFilePath FilePath
path ((CString -> IO ()) -> IO ()) -> (CString -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \CString
s ->
FilePath -> IO CInt -> IO ()
forall a. (Eq a, Num a) => FilePath -> IO a -> IO ()
throwErrnoIfMinus1Retry_ FilePath
"changeWorkingDirectory" (CString -> IO CInt
c_chdir CString
s)
foreign import ccall unsafe "chdir"
c_chdir :: CString -> IO CInt
removeDirectory :: FilePath -> IO ()
removeDirectory :: FilePath -> IO ()
removeDirectory FilePath
path =
(IOError -> IOError) -> IO () -> IO ()
forall a. (IOError -> IOError) -> IO a -> IO a
modifyIOError (IOError -> FilePath -> IOError
`ioeSetFileName` FilePath
path) (IO () -> IO ()) -> IO () -> IO ()
forall a b. (a -> b) -> a -> b
$
FilePath -> (CString -> IO ()) -> IO ()
forall a. FilePath -> (CString -> IO a) -> IO a
withFilePath FilePath
path ((CString -> IO ()) -> IO ()) -> (CString -> IO ()) -> IO ()
forall a b. (a -> b) -> a -> b
$ \CString
s ->
FilePath -> IO CInt -> IO ()
forall a. (Eq a, Num a) => FilePath -> IO a -> IO ()
throwErrnoIfMinus1Retry_ FilePath
"removeDirectory" (CString -> IO CInt
c_rmdir CString
s)
foreign import ccall unsafe "rmdir"
c_rmdir :: CString -> IO CInt