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Clean up

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Julian Ospald 2020-01-26 22:40:03 +01:00
parent 768443df27
commit ecb52f5217
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3 changed files with 381 additions and 588 deletions
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304
hpath-directory/src/System/Posix/RawFilePath/Directory.hs
View File

@ -28,8 +28,6 @@
-- > import System.Posix.RawFilePath.Directory -- > import System.Posix.RawFilePath.Directory
{-# LANGUAGE CPP #-} {-# LANGUAGE CPP #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE FlexibleContexts #-}
module System.Posix.RawFilePath.Directory module System.Posix.RawFilePath.Directory
( (
@ -93,35 +91,22 @@ module System.Posix.RawFilePath.Directory
where where
import Control.Applicative import Control.Applicative ( (<$>) )
( import Control.Exception.Safe ( IOException
(<$>)
)
import Control.Exception.Safe
(
IOException
, bracket , bracket
, bracketOnError , bracketOnError
, throwIO , throwIO
, finally , finally
) )
import Control.Monad import Control.Monad ( unless
(
unless
, void , void
, when , when
) )
import Control.Monad.Catch ( MonadThrow(..) ) import Control.Monad.Catch ( MonadThrow(..) )
import Control.Monad.Fail ( MonadFail ) import Control.Monad.Fail ( MonadFail )
import Control.Monad.IfElse import Control.Monad.IfElse ( unlessM )
(
unlessM
)
import qualified Data.ByteString as BS import qualified Data.ByteString as BS
import Data.ByteString import Data.ByteString ( ByteString )
(
ByteString
)
import Data.Traversable ( for ) import Data.Traversable ( for )
import Data.Functor ( ($>) ) import Data.Functor ( ($>) )
#if MIN_VERSION_bytestring(0,10,2) #if MIN_VERSION_bytestring(0,10,2)
@ -129,104 +114,73 @@ import Data.ByteString.Builder
#else #else
import Data.ByteString.Lazy.Builder import Data.ByteString.Lazy.Builder
#endif #endif
( ( Builder
Builder
, byteString , byteString
, toLazyByteString , toLazyByteString
) )
import qualified Data.ByteString.Lazy as L import qualified Data.ByteString.Lazy as L
import Data.ByteString.Unsafe import Data.ByteString.Unsafe ( unsafePackCStringFinalizer )
( import qualified Data.ByteString.UTF8 as UTF8
unsafePackCStringFinalizer import Data.Foldable ( for_ )
) import Data.IORef ( IORef
import Data.Foldable
(
for_
)
import Data.IORef
(
IORef
, modifyIORef , modifyIORef
, newIORef , newIORef
, readIORef , readIORef
) )
import Data.Maybe import Data.Maybe ( catMaybes )
( import Data.Monoid ( (<>)
catMaybes
)
import Data.Monoid
(
(<>)
, mempty , mempty
) )
import Data.Time.Clock import Data.Time.Clock
import Data.Time.Clock.POSIX (getPOSIXTime, posixSecondsToUTCTime, POSIXTime) import Data.Time.Clock.POSIX ( getPOSIXTime
import Data.Word , posixSecondsToUTCTime
( , POSIXTime
Word8
) )
import Foreign.C.Error import Data.Word ( Word8 )
( import Foreign.C.Error ( eEXIST
eEXIST
, eNOENT , eNOENT
, eNOTEMPTY , eNOTEMPTY
, eXDEV , eXDEV
, getErrno , getErrno
) )
import Foreign.C.Types import Foreign.C.Types ( CSize )
( import Foreign.Marshal.Alloc ( allocaBytes )
CSize import Foreign.Ptr ( Ptr )
import GHC.IO.Exception ( IOErrorType(..) )
import Prelude hiding ( appendFile
, readFile
, writeFile
) )
import Foreign.Marshal.Alloc
(
allocaBytes
)
import Foreign.Ptr
(
Ptr
)
import GHC.IO.Exception
(
IOErrorType(..)
)
import Prelude hiding (appendFile, readFile, writeFile)
import Streamly import Streamly
import Streamly.External.ByteString import Streamly.External.ByteString
import qualified Streamly.External.ByteString.Lazy as SL import qualified Streamly.External.ByteString.Lazy
as SL
import qualified Streamly.Data.Fold as FL import qualified Streamly.Data.Fold as FL
import Streamly.Memory.Array import Streamly.Memory.Array
import qualified Streamly.FileSystem.Handle as FH import qualified Streamly.FileSystem.Handle as FH
import qualified Streamly.Internal.Data.Unfold as SU import qualified Streamly.Internal.Data.Unfold as SU
import qualified Streamly.Internal.FileSystem.Handle as IFH import qualified Streamly.Internal.FileSystem.Handle
import qualified Streamly.Internal.Memory.ArrayStream as AS as IFH
import qualified Streamly.Internal.Memory.ArrayStream
as AS
import qualified Streamly.Prelude as S import qualified Streamly.Prelude as S
import qualified System.IO as SIO import qualified System.IO as SIO
import System.IO.Error import System.IO.Error ( catchIOError
(
catchIOError
, ioeGetErrorType , ioeGetErrorType
) )
import System.Posix.FilePath import System.Posix.FilePath
import System.Posix.ByteString import System.Posix.ByteString ( exclusive )
(
exclusive
)
import System.Posix.RawFilePath.Directory.Errors import System.Posix.RawFilePath.Directory.Errors
import System.Posix.Directory.ByteString import System.Posix.Directory.ByteString
( ( createDirectory
createDirectory
, closeDirStream , closeDirStream
, getWorkingDirectory , getWorkingDirectory
, openDirStream , openDirStream
, removeDirectory , removeDirectory
) )
import System.Posix.RawFilePath.Directory.Traversals import System.Posix.RawFilePath.Directory.Traversals
( ( getDirectoryContents' )
getDirectoryContents' import System.Posix.Files.ByteString ( createSymbolicLink
)
import System.Posix.Files.ByteString
(
createSymbolicLink
, fileAccess , fileAccess
, fileMode , fileMode
, getFdStatus , getFdStatus
@ -247,18 +201,17 @@ import System.Posix.Files.ByteString
) )
import qualified System.Posix.FilePath as FP import qualified System.Posix.FilePath as FP
import qualified System.Posix.Files.ByteString as PF import qualified System.Posix.Files.ByteString as PF
import qualified "unix" System.Posix.IO.ByteString as SPI import qualified "unix" System.Posix.IO.ByteString
import qualified "unix-bytestring" System.Posix.IO.ByteString as SPB as SPI
import System.Posix.FD import qualified "unix-bytestring" System.Posix.IO.ByteString
( as SPB
openFd import System.Posix.FD ( openFd )
) import qualified System.Posix.RawFilePath.Directory.Traversals
import qualified System.Posix.RawFilePath.Directory.Traversals as SPDT as SPDT
import qualified System.Posix.Foreign as SPDF import qualified System.Posix.Foreign as SPDF
import qualified System.Posix.Process.ByteString as SPP import qualified System.Posix.Process.ByteString
import System.Posix.Types as SPP
( import System.Posix.Types ( FileMode
FileMode
, ProcessID , ProcessID
, Fd , Fd
, EpochTime , EpochTime
@ -372,8 +325,7 @@ copyDirRecursive :: RawFilePath -- ^ source dir
-> CopyMode -> CopyMode
-> RecursiveErrorMode -> RecursiveErrorMode
-> IO () -> IO ()
copyDirRecursive fromp destdirp cm rm copyDirRecursive fromp destdirp cm rm = do
= do
ce <- newIORef [] ce <- newIORef []
-- for performance, sanity checks are only done for the top dir -- for performance, sanity checks are only done for the top dir
throwSameFile fromp destdirp throwSameFile fromp destdirp
@ -384,11 +336,14 @@ copyDirRecursive fromp destdirp cm rm
(throwIO . RecursiveFailure $ collectedExceptions) (throwIO . RecursiveFailure $ collectedExceptions)
where where
basename :: MonadFail m => RawFilePath -> m RawFilePath basename :: MonadFail m => RawFilePath -> m RawFilePath
basename x = let b = takeBaseName x basename x =
let b = takeBaseName x
in if BS.null b then fail ("No base name" :: String) else pure b in if BS.null b then fail ("No base name" :: String) else pure b
go :: IORef [(RecursiveFailureHint, IOException)] go :: IORef [(RecursiveFailureHint, IOException)]
-> RawFilePath -> RawFilePath -> IO () -> RawFilePath
-> RawFilePath
-> IO ()
go ce from destdir = do go ce from destdir = do
-- NOTE: order is important here, so we don't get empty directories -- NOTE: order is important here, so we don't get empty directories
@ -404,12 +359,9 @@ copyDirRecursive fromp destdirp cm rm
fmode' <- PF.fileMode <$> PF.getSymbolicLinkStatus from fmode' <- PF.fileMode <$> PF.getSymbolicLinkStatus from
case cm of case cm of
Strict -> createDirectory destdir fmode' Strict -> createDirectory destdir fmode'
Overwrite -> catchIOError (createDirectory destdir Overwrite -> catchIOError (createDirectory destdir fmode') $ \e ->
fmode')
$ \e ->
case ioeGetErrorType e of case ioeGetErrorType e of
AlreadyExists -> setFileMode destdir AlreadyExists -> setFileMode destdir fmode'
fmode'
_ -> ioError e _ -> ioError e
return contents return contents
@ -422,22 +374,25 @@ copyDirRecursive fromp destdirp cm rm
ftype <- getFileType f ftype <- getFileType f
newdest <- (destdir </>) <$> basename f newdest <- (destdir </>) <$> basename f
case ftype of case ftype of
SymbolicLink -> handleIOE (RecreateSymlinkFailed f newdest) ce () SymbolicLink ->
handleIOE (RecreateSymlinkFailed f newdest) ce ()
$ recreateSymlink f newdest cm $ recreateSymlink f newdest cm
Directory -> go ce f newdest Directory -> go ce f newdest
RegularFile -> handleIOE (CopyFileFailed f newdest) ce () RegularFile ->
$ copyFile f newdest cm handleIOE (CopyFileFailed f newdest) ce () $ copyFile f newdest cm
_ -> return () _ -> return ()
-- helper to handle errors for both RecursiveErrorModes and return a -- helper to handle errors for both RecursiveErrorModes and return a
-- default value -- default value
handleIOE :: RecursiveFailureHint handleIOE :: RecursiveFailureHint
-> IORef [(RecursiveFailureHint, IOException)] -> IORef [(RecursiveFailureHint, IOException)]
-> a -> IO a -> IO a -> a
-> IO a
-> IO a
handleIOE hint ce def = case rm of handleIOE hint ce def = case rm of
FailEarly -> handleIOError throwIO FailEarly -> handleIOError throwIO
CollectFailures -> handleIOError (\e -> modifyIORef ce ((hint, e):) CollectFailures ->
>> return def) handleIOError (\e -> modifyIORef ce ((hint, e) :) >> return def)
-- |Recreate a symlink. -- |Recreate a symlink.
@ -473,8 +428,7 @@ recreateSymlink :: RawFilePath -- ^ the old symlink file
-> RawFilePath -- ^ destination file -> RawFilePath -- ^ destination file
-> CopyMode -> CopyMode
-> IO () -> IO ()
recreateSymlink symsource newsym cm recreateSymlink symsource newsym cm = do
= do
throwSameFile symsource newsym throwSameFile symsource newsym
sympoint <- readSymbolicLink symsource sympoint <- readSymbolicLink symsource
case cm of case cm of
@ -534,20 +488,28 @@ copyFile :: RawFilePath -- ^ source file
-> IO () -> IO ()
copyFile from to cm = do copyFile from to cm = do
throwSameFile from to throwSameFile from to
bracket (do bracket
(do
fd <- openFd from SPI.ReadOnly [SPDF.oNofollow] Nothing fd <- openFd from SPI.ReadOnly [SPDF.oNofollow] Nothing
handle <- SPI.fdToHandle fd handle <- SPI.fdToHandle fd
pure (fd, handle)) pure (fd, handle)
)
(\(_, handle) -> SIO.hClose handle) (\(_, handle) -> SIO.hClose handle)
$ \(fromFd, fH) -> do $ \(fromFd, fH) -> do
sourceFileMode <- System.Posix.Files.ByteString.fileMode <$> getFdStatus fromFd sourceFileMode <- System.Posix.Files.ByteString.fileMode
let dflags = [SPDF.oNofollow, case cm of <$> getFdStatus fromFd
let dflags =
[ SPDF.oNofollow
, case cm of
Strict -> SPDF.oExcl Strict -> SPDF.oExcl
Overwrite -> SPDF.oTrunc] Overwrite -> SPDF.oTrunc
bracketeer (do ]
bracketeer
(do
fd <- openFd to SPI.WriteOnly dflags $ Just sourceFileMode fd <- openFd to SPI.WriteOnly dflags $ Just sourceFileMode
handle <- SPI.fdToHandle fd handle <- SPI.fdToHandle fd
pure (fd, handle)) pure (fd, handle)
)
(\(_, handle) -> SIO.hClose handle) (\(_, handle) -> SIO.hClose handle)
(\(_, handle) -> do (\(_, handle) -> do
SIO.hClose handle SIO.hClose handle
@ -555,13 +517,15 @@ copyFile from to cm = do
-- if we created the file and copying failed, it's -- if we created the file and copying failed, it's
-- safe to clean up -- safe to clean up
Strict -> deleteFile to Strict -> deleteFile to
Overwrite -> pure ()) Overwrite -> pure ()
)
$ \(_, tH) -> do $ \(_, tH) -> do
SIO.hSetBinaryMode fH True SIO.hSetBinaryMode fH True
SIO.hSetBinaryMode tH True SIO.hSetBinaryMode tH True
streamlyCopy (fH, tH) streamlyCopy (fH, tH)
where where
streamlyCopy (fH, tH) = S.fold (FH.writeChunks tH) $ IFH.toChunksWithBufferOf (256*1024) fH streamlyCopy (fH, tH) =
S.fold (FH.writeChunks tH) $ IFH.toChunksWithBufferOf (256 * 1024) fH
-- |Copies a regular file, directory or symbolic link. In case of a -- |Copies a regular file, directory or symbolic link. In case of a
-- symbolic link it is just recreated, even if it points to a directory. -- symbolic link it is just recreated, even if it points to a directory.
@ -644,10 +608,7 @@ deleteDir = removeDirectory
-- - `NoSuchThing` if directory does not exist -- - `NoSuchThing` if directory does not exist
-- - `PermissionDenied` if we can't open or write to parent directory -- - `PermissionDenied` if we can't open or write to parent directory
deleteDirRecursive :: RawFilePath -> IO () deleteDirRecursive :: RawFilePath -> IO ()
deleteDirRecursive p = deleteDirRecursive p = catchErrno [eNOTEMPTY, eEXIST] (deleteDir p) $ do
catchErrno [eNOTEMPTY, eEXIST]
(deleteDir p)
$ do
files <- getDirsFiles p files <- getDirsFiles p
for_ files $ \file -> do for_ files $ \file -> do
ftype <- getFileType file ftype <- getFileType file
@ -687,18 +648,16 @@ easyDelete p = do
-- |Opens a file appropriately by invoking xdg-open. The file type -- |Opens a file appropriately by invoking xdg-open. The file type
-- is not checked. This forks a process. -- is not checked. This forks a process.
openFile :: RawFilePath openFile :: RawFilePath -> IO ProcessID
-> IO ProcessID openFile fp = SPP.forkProcess
openFile fp = $ SPP.executeFile (UTF8.fromString "xdg-open") True [fp] Nothing
SPP.forkProcess $ SPP.executeFile "xdg-open" True [fp] Nothing
-- |Executes a program with the given arguments. This forks a process. -- |Executes a program with the given arguments. This forks a process.
executeFile :: RawFilePath -- ^ program executeFile :: RawFilePath -- ^ program
-> [ByteString] -- ^ arguments -> [ByteString] -- ^ arguments
-> IO ProcessID -> IO ProcessID
executeFile fp args = executeFile fp args = SPP.forkProcess $ SPP.executeFile fp True args Nothing
SPP.forkProcess $ SPP.executeFile fp True args Nothing
@ -718,9 +677,12 @@ executeFile fp args =
-- - `NoSuchThing` if any of the parent components of the path -- - `NoSuchThing` if any of the parent components of the path
-- do not exist -- do not exist
createRegularFile :: FileMode -> RawFilePath -> IO () createRegularFile :: FileMode -> RawFilePath -> IO ()
createRegularFile fm destBS = createRegularFile fm destBS = bracket
bracket (SPI.openFd destBS SPI.WriteOnly (Just fm) (SPI.openFd destBS
(SPI.defaultFileFlags { exclusive = True })) SPI.WriteOnly
(Just fm)
(SPI.defaultFileFlags { exclusive = True })
)
SPI.closeFd SPI.closeFd
(\_ -> return ()) (\_ -> return ())
@ -769,18 +731,21 @@ createDirIfMissing fm destBS =
-- --
-- Note: calls `getcwd` if the input path is a relative path -- Note: calls `getcwd` if the input path is a relative path
createDirRecursive :: FileMode -> RawFilePath -> IO () createDirRecursive :: FileMode -> RawFilePath -> IO ()
createDirRecursive fm p = createDirRecursive fm p = go p
go p
where where
go :: RawFilePath -> IO () go :: RawFilePath -> IO ()
go dest = do go dest = do
catchIOError (createDirectory dest fm) $ \e -> do catchIOError (createDirectory dest fm) $ \e -> do
errno <- getErrno errno <- getErrno
case errno of case errno of
en | en == eEXIST -> unlessM (doesDirectoryExist dest) (ioError e) en
| en == eNOENT -> createDirRecursive fm (takeDirectory dest) | en == eEXIST
-> unlessM (doesDirectoryExist dest) (ioError e)
| en == eNOENT
-> createDirRecursive fm (takeDirectory dest)
>> createDirectory dest fm >> createDirectory dest fm
| otherwise -> ioError e | otherwise
-> ioError e
-- |Create a symlink. -- |Create a symlink.
@ -796,8 +761,7 @@ createDirRecursive fm p =
createSymlink :: RawFilePath -- ^ destination file createSymlink :: RawFilePath -- ^ destination file
-> RawFilePath -- ^ path the symlink points to -> RawFilePath -- ^ path the symlink points to
-> IO () -> IO ()
createSymlink destBS sympoint createSymlink destBS sympoint = createSymbolicLink sympoint destBS
= createSymbolicLink sympoint destBS
@ -936,12 +900,12 @@ readFile path = do
-- - `PermissionDenied` if we cannot read the file or the directory -- - `PermissionDenied` if we cannot read the file or the directory
-- containting it -- containting it
-- - `NoSuchThing` if the file does not exist -- - `NoSuchThing` if the file does not exist
readFileStream :: RawFilePath readFileStream :: RawFilePath -> IO (SerialT IO ByteString)
-> IO (SerialT IO ByteString)
readFileStream fp = do readFileStream fp = do
fd <- openFd fp SPI.ReadOnly [] Nothing fd <- openFd fp SPI.ReadOnly [] Nothing
handle <- SPI.fdToHandle fd handle <- SPI.fdToHandle fd
let stream = fmap fromArray (S.unfold (SU.finally SIO.hClose FH.readChunks) handle) let stream =
fmap fromArray (S.unfold (SU.finally SIO.hClose FH.readChunks) handle)
pure stream pure stream
@ -966,7 +930,8 @@ writeFile :: RawFilePath
-> ByteString -> ByteString
-> IO () -> IO ()
writeFile fp fmode bs = writeFile fp fmode bs =
bracket (openFd fp SPI.WriteOnly [SPDF.oTrunc] fmode) (SPI.closeFd) $ \fd -> void $ SPB.fdWrite fd bs bracket (openFd fp SPI.WriteOnly [SPDF.oTrunc] fmode) (SPI.closeFd)
$ \fd -> void $ SPB.fdWrite fd bs
-- |Write a given lazy ByteString to a file, truncating the file beforehand. -- |Write a given lazy ByteString to a file, truncating the file beforehand.
@ -985,10 +950,11 @@ writeFileL :: RawFilePath
-> L.ByteString -> L.ByteString
-> IO () -> IO ()
writeFileL fp fmode lbs = do writeFileL fp fmode lbs = do
handle <- bracketOnError (openFd fp SPI.WriteOnly [SPDF.oTrunc] fmode) (SPI.closeFd) $ SPI.fdToHandle handle <-
bracketOnError (openFd fp SPI.WriteOnly [SPDF.oTrunc] fmode) (SPI.closeFd)
$ SPI.fdToHandle
finally (streamlyCopy handle) (SIO.hClose handle) finally (streamlyCopy handle) (SIO.hClose handle)
where where streamlyCopy tH = S.fold (FH.writeChunks tH) $ SL.toChunks lbs
streamlyCopy tH = S.fold (FH.writeChunks tH) $ SL.toChunks lbs
-- |Append a given ByteString to a file. -- |Append a given ByteString to a file.
@ -1002,8 +968,8 @@ writeFileL fp fmode lbs = do
-- - `NoSuchThing` if the file does not exist -- - `NoSuchThing` if the file does not exist
appendFile :: RawFilePath -> ByteString -> IO () appendFile :: RawFilePath -> ByteString -> IO ()
appendFile fp bs = appendFile fp bs =
bracket (openFd fp SPI.WriteOnly [SPDF.oAppend] Nothing) bracket (openFd fp SPI.WriteOnly [SPDF.oAppend] Nothing) (SPI.closeFd)
(SPI.closeFd) $ \fd -> void $ SPB.fdWrite fd bs $ \fd -> void $ SPB.fdWrite fd bs
@ -1015,8 +981,8 @@ appendFile fp bs =
-- |Default permissions for a new file. -- |Default permissions for a new file.
newFilePerms :: FileMode newFilePerms :: FileMode
newFilePerms newFilePerms =
= ownerWriteMode ownerWriteMode
`unionFileModes` ownerReadMode `unionFileModes` ownerReadMode
`unionFileModes` groupWriteMode `unionFileModes` groupWriteMode
`unionFileModes` groupReadMode `unionFileModes` groupReadMode
@ -1026,8 +992,8 @@ newFilePerms
-- |Default permissions for a new directory. -- |Default permissions for a new directory.
newDirPerms :: FileMode newDirPerms :: FileMode
newDirPerms newDirPerms =
= ownerModes ownerModes
`unionFileModes` groupExecuteMode `unionFileModes` groupExecuteMode
`unionFileModes` groupReadMode `unionFileModes` groupReadMode
`unionFileModes` otherExecuteMode `unionFileModes` otherExecuteMode
@ -1047,9 +1013,12 @@ newDirPerms
-- Only eNOENT is catched (and returns False). -- Only eNOENT is catched (and returns False).
doesExist :: RawFilePath -> IO Bool doesExist :: RawFilePath -> IO Bool
doesExist bs = doesExist bs =
catchErrno [eNOENT] (do catchErrno
[eNOENT]
(do
_ <- PF.getSymbolicLinkStatus bs _ <- PF.getSymbolicLinkStatus bs
return $ True) return $ True
)
$ return False $ return False
@ -1059,9 +1028,12 @@ doesExist bs =
-- Only eNOENT is catched (and returns False). -- Only eNOENT is catched (and returns False).
doesFileExist :: RawFilePath -> IO Bool doesFileExist :: RawFilePath -> IO Bool
doesFileExist bs = doesFileExist bs =
catchErrno [eNOENT] (do catchErrno
[eNOENT]
(do
fs <- PF.getSymbolicLinkStatus bs fs <- PF.getSymbolicLinkStatus bs
return $ not . PF.isDirectory $ fs) return $ not . PF.isDirectory $ fs
)
$ return False $ return False
@ -1071,9 +1043,12 @@ doesFileExist bs =
-- Only eNOENT is catched (and returns False). -- Only eNOENT is catched (and returns False).
doesDirectoryExist :: RawFilePath -> IO Bool doesDirectoryExist :: RawFilePath -> IO Bool
doesDirectoryExist bs = doesDirectoryExist bs =
catchErrno [eNOENT] (do catchErrno
[eNOENT]
(do
fs <- PF.getSymbolicLinkStatus bs fs <- PF.getSymbolicLinkStatus bs
return $ PF.isDirectory fs) return $ PF.isDirectory fs
)
$ return False $ return False
@ -1113,11 +1088,8 @@ isExecutable bs = fileAccess bs False False True
-- |Checks whether the directory at the given path exists and can be -- |Checks whether the directory at the given path exists and can be
-- opened. This invokes `openDirStream` which follows symlinks. -- opened. This invokes `openDirStream` which follows symlinks.
canOpenDirectory :: RawFilePath -> IO Bool canOpenDirectory :: RawFilePath -> IO Bool
canOpenDirectory bs = canOpenDirectory bs = handleIOError (\_ -> return False) $ do
handleIOError (\_ -> return False) $ do bracket (openDirStream bs) closeDirStream (\_ -> return ())
bracket (openDirStream bs)
closeDirStream
(\_ -> return ())
return True return True
@ -1179,9 +1151,7 @@ getDirsFiles' fp = do
fd <- openFd fp SPI.ReadOnly [SPDF.oNofollow] Nothing fd <- openFd fp SPI.ReadOnly [SPDF.oNofollow] Nothing
rawContents <- getDirectoryContents' fd rawContents <- getDirectoryContents' fd
fmap catMaybes $ for rawContents $ \(_, f) -> fmap catMaybes $ for rawContents $ \(_, f) ->
if FP.isSpecialDirectoryEntry f if FP.isSpecialDirectoryEntry f then pure Nothing else pure $ Just f
then pure Nothing
else pure $ Just f
@ -1203,8 +1173,7 @@ getFileType fp = do
fs <- PF.getSymbolicLinkStatus fp fs <- PF.getSymbolicLinkStatus fp
decide fs decide fs
where where
decide fs decide fs | PF.isDirectory fs = return Directory
| PF.isDirectory fs = return Directory
| PF.isRegularFile fs = return RegularFile | PF.isRegularFile fs = return RegularFile
| PF.isSymbolicLink fs = return SymbolicLink | PF.isSymbolicLink fs = return SymbolicLink
| PF.isBlockDevice fs = return BlockDevice | PF.isBlockDevice fs = return BlockDevice
@ -1243,4 +1212,3 @@ toAbs bs = do
False -> do False -> do
cwd <- getWorkingDirectory cwd <- getWorkingDirectory
return $ cwd </> bs return $ cwd </> bs

5
hpath-io/hpath-io.cabal
View File

@ -26,19 +26,14 @@ library
buildable: False buildable: False
exposed-modules: HPath.IO exposed-modules: HPath.IO
build-depends: base >= 4.8 && <5 build-depends: base >= 4.8 && <5
, IfElse
, bytestring >= 0.10.0.0 , bytestring >= 0.10.0.0
, exceptions , exceptions
, hpath >= 0.11 && < 0.12 , hpath >= 0.11 && < 0.12
, hpath-directory >= 0.13 && < 0.14 , hpath-directory >= 0.13 && < 0.14
, hpath-filepath >= 0.10.2 && < 0.11
, safe-exceptions >= 0.1 , safe-exceptions >= 0.1
, streamly >= 0.7 , streamly >= 0.7
, streamly-bytestring >= 0.1
, time >= 1.8 , time >= 1.8
, unix >= 2.5 , unix >= 2.5
, unix-bytestring
, utf8-string
if !impl(ghc>=7.11) if !impl(ghc>=7.11)
build-depends: transformers build-depends: transformers
hs-source-dirs: src hs-source-dirs: src

236
hpath-io/src/HPath/IO.hs
View File

@ -27,10 +27,7 @@
-- For other functions (like `copyFile`), the behavior on these file types is -- For other functions (like `copyFile`), the behavior on these file types is
-- unreliable/unsafe. Check the documentation of those functions for details. -- unreliable/unsafe. Check the documentation of those functions for details.
{-# LANGUAGE CPP #-}
{-# LANGUAGE PackageImports #-} {-# LANGUAGE PackageImports #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE FlexibleContexts #-}
module HPath.IO module HPath.IO
( (
@ -68,8 +65,8 @@ module HPath.IO
, writeFileL , writeFileL
, appendFile , appendFile
-- * File permissions -- * File permissions
, newFilePerms , RD.newFilePerms
, newDirPerms , RD.newDirPerms
-- * File checks -- * File checks
, doesExist , doesExist
, doesFileExist , doesFileExist
@ -97,174 +94,37 @@ module HPath.IO
where where
import Control.Applicative import Control.Exception.Safe ( bracketOnError
(
(<$>)
)
import Control.Exception.Safe
(
IOException
, bracket
, bracketOnError
, throwIO
, finally , finally
) )
import Control.Monad
(
unless
, void
, when
)
import Control.Monad.Catch ( MonadThrow(..) ) import Control.Monad.Catch ( MonadThrow(..) )
import Control.Monad.IfElse
( import Data.ByteString ( ByteString )
unlessM
)
import Data.ByteString
(
ByteString
)
import Data.Traversable ( for ) import Data.Traversable ( for )
import Data.Functor ( ($>) )
#if MIN_VERSION_bytestring(0,10,2)
import Data.ByteString.Builder
#else
import Data.ByteString.Lazy.Builder
#endif
(
Builder
, byteString
, toLazyByteString
)
import qualified Data.ByteString.Lazy as L import qualified Data.ByteString.Lazy as L
import Data.ByteString.Unsafe
(
unsafePackCStringFinalizer
)
import Data.Foldable
(
for_
)
import Data.IORef
(
IORef
, modifyIORef
, newIORef
, readIORef
)
import Data.Maybe
(
catMaybes
)
import Data.Monoid
(
(<>)
, mempty
)
import Data.Time.Clock import Data.Time.Clock
import Data.Time.Clock.POSIX (getPOSIXTime, posixSecondsToUTCTime, POSIXTime) import Data.Time.Clock.POSIX ( POSIXTime )
import Data.Word
(
Word8
)
import Foreign.C.Error
(
eEXIST
, eNOENT
, eNOTEMPTY
, eXDEV
, getErrno
)
import Foreign.C.Types
(
CSize
)
import Foreign.Marshal.Alloc
(
allocaBytes
)
import Foreign.Ptr
(
Ptr
)
import GHC.IO.Exception
(
IOErrorType(..)
)
import HPath import HPath
import Prelude hiding (appendFile, readFile, writeFile) import Prelude hiding ( appendFile
, readFile
, writeFile
)
import Streamly import Streamly
import Streamly.External.ByteString
import qualified Streamly.External.ByteString.Lazy as SL
import qualified Streamly.Data.Fold as FL
import Streamly.Memory.Array
import qualified Streamly.FileSystem.Handle as FH
import qualified Streamly.Internal.Data.Unfold as SU
import qualified Streamly.Internal.FileSystem.Handle as IFH
import qualified Streamly.Internal.Memory.ArrayStream as AS
import qualified Streamly.Prelude as S
import qualified System.IO as SIO import qualified System.IO as SIO
import System.IO.Error
(
catchIOError
, ioeGetErrorType
)
import System.Posix.ByteString
(
exclusive
)
import System.Posix.Directory.ByteString import System.Posix.Directory.ByteString
( ( getWorkingDirectory )
createDirectory import qualified "unix" System.Posix.IO.ByteString
, closeDirStream as SPI
, getWorkingDirectory import System.Posix.FD ( openFd )
, openDirStream
, removeDirectory
)
import System.Posix.Files.ByteString
(
createSymbolicLink
, fileAccess
, fileMode
, getFdStatus
, groupExecuteMode
, groupReadMode
, groupWriteMode
, otherExecuteMode
, otherReadMode
, otherWriteMode
, ownerModes
, ownerReadMode
, ownerWriteMode
, readSymbolicLink
, removeLink
, rename
, setFileMode
, unionFileModes
)
import qualified System.Posix.FilePath as FP
import qualified System.Posix.Files.ByteString as PF
import qualified "unix" System.Posix.IO.ByteString as SPI
import qualified "unix-bytestring" System.Posix.IO.ByteString as SPB
import System.Posix.FD
(
openFd
)
import qualified System.Posix.Process.ByteString as SPP
import System.Posix.RawFilePath.Directory.Errors import System.Posix.RawFilePath.Directory.Errors
import System.Posix.Types import System.Posix.Types ( FileMode
(
FileMode
, ProcessID , ProcessID
, Fd
, EpochTime , EpochTime
) )
import System.Posix.Time import qualified System.Posix.RawFilePath.Directory
as RD
import qualified System.Posix.RawFilePath.Directory as RD
import System.Posix.RawFilePath.Directory import System.Posix.RawFilePath.Directory
( ( FileType
FileType
, RecursiveErrorMode , RecursiveErrorMode
, CopyMode , CopyMode
) )
@ -337,8 +197,8 @@ copyDirRecursive :: Path b1 -- ^ source dir
-> CopyMode -> CopyMode
-> RecursiveErrorMode -> RecursiveErrorMode
-> IO () -> IO ()
copyDirRecursive (Path fromp) (Path destdirp) cm rm copyDirRecursive (Path fromp) (Path destdirp) cm rm =
= RD.copyDirRecursive fromp destdirp cm rm RD.copyDirRecursive fromp destdirp cm rm
-- |Recreate a symlink. -- |Recreate a symlink.
@ -374,8 +234,8 @@ recreateSymlink :: Path b1 -- ^ the old symlink file
-> Path b2 -- ^ destination file -> Path b2 -- ^ destination file
-> CopyMode -> CopyMode
-> IO () -> IO ()
recreateSymlink (Path symsourceBS) (Path newsymBS) cm recreateSymlink (Path symsourceBS) (Path newsymBS) cm =
= RD.recreateSymlink symsourceBS newsymBS cm RD.recreateSymlink symsourceBS newsymBS cm
-- |Copies the given regular file to the given destination. -- |Copies the given regular file to the given destination.
@ -432,11 +292,7 @@ copyFile (Path from) (Path to) cm = RD.copyFile from to cm
-- * calls `copyDirRecursive` for directories -- * calls `copyDirRecursive` for directories
-- --
-- Note: may call `getcwd` in Overwrite mode (if destination is a relative path) -- Note: may call `getcwd` in Overwrite mode (if destination is a relative path)
easyCopy :: Path b1 easyCopy :: Path b1 -> Path b2 -> CopyMode -> RecursiveErrorMode -> IO ()
-> Path b2
-> CopyMode
-> RecursiveErrorMode
-> IO ()
easyCopy (Path from) (Path to) cm rm = RD.easyCopy from to cm rm easyCopy (Path from) (Path to) cm rm = RD.easyCopy from to cm rm
@ -522,8 +378,7 @@ easyDelete (Path p) = RD.easyDelete p
-- |Opens a file appropriately by invoking xdg-open. The file type -- |Opens a file appropriately by invoking xdg-open. The file type
-- is not checked. This forks a process. -- is not checked. This forks a process.
openFile :: Path b openFile :: Path b -> IO ProcessID
-> IO ProcessID
openFile (Path fp) = RD.openFile fp openFile (Path fp) = RD.openFile fp
@ -725,8 +580,7 @@ readFile (Path path) = RD.readFile path
-- - `PermissionDenied` if we cannot read the file or the directory -- - `PermissionDenied` if we cannot read the file or the directory
-- containting it -- containting it
-- - `NoSuchThing` if the file does not exist -- - `NoSuchThing` if the file does not exist
readFileStream :: Path b readFileStream :: Path b -> IO (SerialT IO ByteString)
-> IO (SerialT IO ByteString)
readFileStream (Path fp) = RD.readFileStream fp readFileStream (Path fp) = RD.readFileStream fp
@ -786,33 +640,6 @@ appendFile (Path fp) bs = RD.appendFile fp bs
-----------------------
--[ File Permissions]--
-----------------------
-- |Default permissions for a new file.
newFilePerms :: FileMode
newFilePerms
= ownerWriteMode
`unionFileModes` ownerReadMode
`unionFileModes` groupWriteMode
`unionFileModes` groupReadMode
`unionFileModes` otherWriteMode
`unionFileModes` otherReadMode
-- |Default permissions for a new directory.
newDirPerms :: FileMode
newDirPerms
= ownerModes
`unionFileModes` groupExecuteMode
`unionFileModes` groupReadMode
`unionFileModes` otherExecuteMode
`unionFileModes` otherReadMode
------------------- -------------------
--[ File checks ]-- --[ File checks ]--
@ -920,7 +747,7 @@ setModificationTimeHiRes (Path bs) t = RD.setModificationTimeHiRes bs t
-- - `PathParseException` if a filename could not be parsed (should never happen) -- - `PathParseException` if a filename could not be parsed (should never happen)
getDirsFiles :: Path b -- ^ dir to read getDirsFiles :: Path b -- ^ dir to read
-> IO [Path b] -> IO [Path b]
getDirsFiles p@(Path fp) = do getDirsFiles p = do
contents <- getDirsFiles' p contents <- getDirsFiles' p
pure $ fmap (p </>) contents pure $ fmap (p </>) contents
@ -984,8 +811,8 @@ toAbs (Path bs) = do
Just a -> return a Just a -> return a
Nothing -> do Nothing -> do
cwd <- getWorkingDirectory >>= parseAbs cwd <- getWorkingDirectory >>= parseAbs
rel <- parseRel bs -- we know it must be relative now r <- parseRel bs -- we know it must be relative now
return $ cwd </> rel return $ cwd </> r
-- | Helper function to use the Path library without -- | Helper function to use the Path library without
@ -996,7 +823,10 @@ toAbs (Path bs) = do
-- --
-- - `PathParseException` if the bytestring could neither be parsed as -- - `PathParseException` if the bytestring could neither be parsed as
-- relative or absolute Path -- relative or absolute Path
withRawFilePath :: MonadThrow m => ByteString -> (Either (Path Abs) (Path Rel) -> m b) -> m b withRawFilePath :: MonadThrow m
=> ByteString
-> (Either (Path Abs) (Path Rel) -> m b)
-> m b
withRawFilePath bs action = do withRawFilePath bs action = do
path <- parseAny bs path <- parseAny bs
action path action path
@ -1017,6 +847,6 @@ withHandle :: ByteString
withHandle bs mode action = do withHandle bs mode action = do
path <- parseAny bs path <- parseAny bs
handle <- handle <-
bracketOnError (openFd bs mode [] (Just newFilePerms)) (SPI.closeFd) bracketOnError (openFd bs mode [] (Just RD.newFilePerms)) (SPI.closeFd)
$ SPI.fdToHandle $ SPI.fdToHandle
finally (action (handle, path)) (SIO.hClose handle) finally (action (handle, path)) (SIO.hClose handle)