Clean up
This commit is contained in:
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768443df27
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ecb52f5217
@ -28,8 +28,6 @@
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-- > import System.Posix.RawFilePath.Directory
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{-# LANGUAGE CPP #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE FlexibleContexts #-}
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module System.Posix.RawFilePath.Directory
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(
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@ -90,180 +88,135 @@ module System.Posix.RawFilePath.Directory
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, canonicalizePath
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, toAbs
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)
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where
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where
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import Control.Applicative
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(
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(<$>)
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)
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import Control.Exception.Safe
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(
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IOException
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, bracket
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, bracketOnError
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, throwIO
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, finally
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)
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import Control.Monad
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(
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unless
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, void
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, when
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)
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import Control.Monad.Catch (MonadThrow(..))
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import Control.Monad.Fail (MonadFail)
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import Control.Monad.IfElse
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(
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unlessM
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)
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import qualified Data.ByteString as BS
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import Data.ByteString
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(
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ByteString
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)
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import Control.Applicative ( (<$>) )
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import Control.Exception.Safe ( IOException
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, bracket
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, bracketOnError
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, throwIO
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, finally
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)
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import Control.Monad ( unless
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, void
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, when
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)
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import Control.Monad.Catch ( MonadThrow(..) )
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import Control.Monad.Fail ( MonadFail )
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import Control.Monad.IfElse ( unlessM )
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import qualified Data.ByteString as BS
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import Data.ByteString ( ByteString )
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import Data.Traversable ( for )
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import Data.Functor ( ($>) )
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#if MIN_VERSION_bytestring(0,10,2)
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import Data.ByteString.Builder
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import Data.ByteString.Builder
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#else
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import Data.ByteString.Lazy.Builder
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import Data.ByteString.Lazy.Builder
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#endif
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(
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Builder
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, byteString
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, toLazyByteString
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)
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import qualified Data.ByteString.Lazy as L
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import Data.ByteString.Unsafe
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(
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unsafePackCStringFinalizer
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)
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import Data.Foldable
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(
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for_
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)
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import Data.IORef
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(
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IORef
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, modifyIORef
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, newIORef
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, readIORef
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)
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import Data.Maybe
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(
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catMaybes
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)
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import Data.Monoid
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(
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(<>)
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, mempty
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)
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import Data.Time.Clock
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import Data.Time.Clock.POSIX (getPOSIXTime, posixSecondsToUTCTime, POSIXTime)
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import Data.Word
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(
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Word8
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)
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import Foreign.C.Error
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(
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eEXIST
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, eNOENT
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, eNOTEMPTY
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, eXDEV
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, getErrno
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)
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import Foreign.C.Types
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(
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CSize
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)
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import Foreign.Marshal.Alloc
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(
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allocaBytes
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)
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import Foreign.Ptr
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(
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Ptr
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)
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import GHC.IO.Exception
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(
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IOErrorType(..)
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)
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import Prelude hiding (appendFile, readFile, writeFile)
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import Streamly
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import Streamly.External.ByteString
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import qualified Streamly.External.ByteString.Lazy as SL
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import qualified Streamly.Data.Fold as FL
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import Streamly.Memory.Array
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import qualified Streamly.FileSystem.Handle as FH
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( Builder
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, byteString
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, toLazyByteString
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)
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import qualified Data.ByteString.Lazy as L
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import Data.ByteString.Unsafe ( unsafePackCStringFinalizer )
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import qualified Data.ByteString.UTF8 as UTF8
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import Data.Foldable ( for_ )
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import Data.IORef ( IORef
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, modifyIORef
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, newIORef
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, readIORef
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)
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import Data.Maybe ( catMaybes )
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import Data.Monoid ( (<>)
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, mempty
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)
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import Data.Time.Clock
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import Data.Time.Clock.POSIX ( getPOSIXTime
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, posixSecondsToUTCTime
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, POSIXTime
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)
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import Data.Word ( Word8 )
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import Foreign.C.Error ( eEXIST
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, eNOENT
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, eNOTEMPTY
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, eXDEV
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, getErrno
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)
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import Foreign.C.Types ( CSize )
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import Foreign.Marshal.Alloc ( allocaBytes )
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import Foreign.Ptr ( Ptr )
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import GHC.IO.Exception ( IOErrorType(..) )
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import Prelude hiding ( appendFile
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, readFile
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, writeFile
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)
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import Streamly
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import Streamly.External.ByteString
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import qualified Streamly.External.ByteString.Lazy
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as SL
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import qualified Streamly.Data.Fold as FL
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import Streamly.Memory.Array
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import qualified Streamly.FileSystem.Handle as FH
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import qualified Streamly.Internal.Data.Unfold as SU
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import qualified Streamly.Internal.FileSystem.Handle as IFH
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import qualified Streamly.Internal.Memory.ArrayStream as AS
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import qualified Streamly.Prelude as S
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import qualified System.IO as SIO
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import System.IO.Error
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(
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catchIOError
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, ioeGetErrorType
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)
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import System.Posix.FilePath
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import System.Posix.ByteString
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(
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exclusive
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)
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import System.Posix.RawFilePath.Directory.Errors
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import System.Posix.Directory.ByteString
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(
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createDirectory
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, closeDirStream
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, getWorkingDirectory
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, openDirStream
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, removeDirectory
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)
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import System.Posix.RawFilePath.Directory.Traversals
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(
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getDirectoryContents'
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)
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import System.Posix.Files.ByteString
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(
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createSymbolicLink
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, fileAccess
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, fileMode
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, getFdStatus
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, groupExecuteMode
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, groupReadMode
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, groupWriteMode
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, otherExecuteMode
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, otherReadMode
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, otherWriteMode
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, ownerModes
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, ownerReadMode
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, ownerWriteMode
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, readSymbolicLink
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, removeLink
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, rename
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, setFileMode
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, unionFileModes
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)
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import qualified System.Posix.FilePath as FP
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import qualified Streamly.Internal.FileSystem.Handle
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as IFH
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import qualified Streamly.Internal.Memory.ArrayStream
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as AS
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import qualified Streamly.Prelude as S
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import qualified System.IO as SIO
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import System.IO.Error ( catchIOError
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, ioeGetErrorType
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)
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import System.Posix.FilePath
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import System.Posix.ByteString ( exclusive )
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import System.Posix.RawFilePath.Directory.Errors
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import System.Posix.Directory.ByteString
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( createDirectory
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, closeDirStream
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, getWorkingDirectory
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, openDirStream
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, removeDirectory
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)
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import System.Posix.RawFilePath.Directory.Traversals
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( getDirectoryContents' )
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import System.Posix.Files.ByteString ( createSymbolicLink
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, fileAccess
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, fileMode
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, getFdStatus
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, groupExecuteMode
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, groupReadMode
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, groupWriteMode
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, otherExecuteMode
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, otherReadMode
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, otherWriteMode
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, ownerModes
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, ownerReadMode
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, ownerWriteMode
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, readSymbolicLink
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, removeLink
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, rename
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, setFileMode
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, unionFileModes
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)
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import qualified System.Posix.FilePath as FP
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import qualified System.Posix.Files.ByteString as PF
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import qualified "unix" System.Posix.IO.ByteString as SPI
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import qualified "unix-bytestring" System.Posix.IO.ByteString as SPB
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import System.Posix.FD
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(
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openFd
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)
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import qualified System.Posix.RawFilePath.Directory.Traversals as SPDT
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import qualified System.Posix.Foreign as SPDF
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import qualified System.Posix.Process.ByteString as SPP
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import System.Posix.Types
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(
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FileMode
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, ProcessID
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, Fd
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, EpochTime
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)
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import System.Posix.Time
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import qualified "unix" System.Posix.IO.ByteString
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as SPI
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import qualified "unix-bytestring" System.Posix.IO.ByteString
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as SPB
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import System.Posix.FD ( openFd )
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import qualified System.Posix.RawFilePath.Directory.Traversals
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as SPDT
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import qualified System.Posix.Foreign as SPDF
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import qualified System.Posix.Process.ByteString
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as SPP
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import System.Posix.Types ( FileMode
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, ProcessID
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, Fd
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, EpochTime
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)
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import System.Posix.Time
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@ -372,72 +325,74 @@ copyDirRecursive :: RawFilePath -- ^ source dir
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-> CopyMode
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-> RecursiveErrorMode
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-> IO ()
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copyDirRecursive fromp destdirp cm rm
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= do
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ce <- newIORef []
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-- for performance, sanity checks are only done for the top dir
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throwSameFile fromp destdirp
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throwDestinationInSource fromp destdirp
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go ce fromp destdirp
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collectedExceptions <- readIORef ce
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unless (null collectedExceptions)
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(throwIO . RecursiveFailure $ collectedExceptions)
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where
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basename :: MonadFail m => RawFilePath -> m RawFilePath
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basename x = let b = takeBaseName x
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in if BS.null b then fail ("No base name" :: String) else pure b
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copyDirRecursive fromp destdirp cm rm = do
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ce <- newIORef []
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-- for performance, sanity checks are only done for the top dir
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throwSameFile fromp destdirp
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throwDestinationInSource fromp destdirp
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go ce fromp destdirp
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collectedExceptions <- readIORef ce
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unless (null collectedExceptions)
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(throwIO . RecursiveFailure $ collectedExceptions)
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where
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basename :: MonadFail m => RawFilePath -> m RawFilePath
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basename x =
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let b = takeBaseName x
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in if BS.null b then fail ("No base name" :: String) else pure b
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go :: IORef [(RecursiveFailureHint, IOException)]
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-> RawFilePath -> RawFilePath -> IO ()
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go ce from destdir = do
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go :: IORef [(RecursiveFailureHint, IOException)]
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-> RawFilePath
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-> RawFilePath
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-> IO ()
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go ce from destdir = do
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-- NOTE: order is important here, so we don't get empty directories
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-- on failure
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-- NOTE: order is important here, so we don't get empty directories
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-- on failure
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-- get the contents of the source dir
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contents <- handleIOE (ReadContentsFailed from destdir) ce [] $ do
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contents <- getDirsFiles from
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-- get the contents of the source dir
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contents <- handleIOE (ReadContentsFailed from destdir) ce [] $ do
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contents <- getDirsFiles from
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-- create the destination dir and
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-- only return contents if we succeed
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handleIOE (CreateDirFailed from destdir) ce [] $ do
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fmode' <- PF.fileMode <$> PF.getSymbolicLinkStatus from
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case cm of
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Strict -> createDirectory destdir fmode'
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Overwrite -> catchIOError (createDirectory destdir
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fmode')
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$ \e ->
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case ioeGetErrorType e of
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AlreadyExists -> setFileMode destdir
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fmode'
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_ -> ioError e
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return contents
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-- create the destination dir and
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-- only return contents if we succeed
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handleIOE (CreateDirFailed from destdir) ce [] $ do
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fmode' <- PF.fileMode <$> PF.getSymbolicLinkStatus from
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case cm of
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Strict -> createDirectory destdir fmode'
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Overwrite -> catchIOError (createDirectory destdir fmode') $ \e ->
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case ioeGetErrorType e of
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AlreadyExists -> setFileMode destdir fmode'
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_ -> ioError e
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return contents
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-- NOTE: we can't use `easyCopy` here, because we want to call `go`
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-- recursively to skip the top-level sanity checks
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-- NOTE: we can't use `easyCopy` here, because we want to call `go`
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-- recursively to skip the top-level sanity checks
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-- if reading the contents and creating the destination dir worked,
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-- then copy the contents to the destination too
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for_ contents $ \f -> do
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ftype <- getFileType f
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newdest <- (destdir </>) <$> basename f
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case ftype of
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SymbolicLink -> handleIOE (RecreateSymlinkFailed f newdest) ce ()
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$ recreateSymlink f newdest cm
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Directory -> go ce f newdest
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RegularFile -> handleIOE (CopyFileFailed f newdest) ce ()
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$ copyFile f newdest cm
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_ -> return ()
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-- if reading the contents and creating the destination dir worked,
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-- then copy the contents to the destination too
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for_ contents $ \f -> do
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ftype <- getFileType f
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newdest <- (destdir </>) <$> basename f
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case ftype of
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SymbolicLink ->
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handleIOE (RecreateSymlinkFailed f newdest) ce ()
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$ recreateSymlink f newdest cm
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Directory -> go ce f newdest
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RegularFile ->
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handleIOE (CopyFileFailed f newdest) ce () $ copyFile f newdest cm
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_ -> return ()
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-- helper to handle errors for both RecursiveErrorModes and return a
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-- default value
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handleIOE :: RecursiveFailureHint
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-> IORef [(RecursiveFailureHint, IOException)]
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-> a -> IO a -> IO a
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handleIOE hint ce def = case rm of
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FailEarly -> handleIOError throwIO
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CollectFailures -> handleIOError (\e -> modifyIORef ce ((hint, e):)
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>> return def)
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-- helper to handle errors for both RecursiveErrorModes and return a
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-- default value
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handleIOE :: RecursiveFailureHint
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-> IORef [(RecursiveFailureHint, IOException)]
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-> a
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-> IO a
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-> IO a
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handleIOE hint ce def = case rm of
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FailEarly -> handleIOError throwIO
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CollectFailures ->
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handleIOError (\e -> modifyIORef ce ((hint, e) :) >> return def)
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-- |Recreate a symlink.
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@ -473,21 +428,20 @@ recreateSymlink :: RawFilePath -- ^ the old symlink file
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-> RawFilePath -- ^ destination file
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-> CopyMode
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-> IO ()
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recreateSymlink symsource newsym cm
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= do
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throwSameFile symsource newsym
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sympoint <- readSymbolicLink symsource
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case cm of
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Strict -> return ()
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Overwrite -> do
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writable <- do
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e <- doesExist newsym
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if e then isWritable newsym else pure False
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isfile <- doesFileExist newsym
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isdir <- doesDirectoryExist newsym
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when (writable && isfile) (deleteFile newsym)
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when (writable && isdir) (deleteDir newsym)
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createSymbolicLink sympoint newsym
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recreateSymlink symsource newsym cm = do
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throwSameFile symsource newsym
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sympoint <- readSymbolicLink symsource
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case cm of
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Strict -> return ()
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Overwrite -> do
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writable <- do
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e <- doesExist newsym
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if e then isWritable newsym else pure False
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isfile <- doesFileExist newsym
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isdir <- doesDirectoryExist newsym
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when (writable && isfile) (deleteFile newsym)
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when (writable && isdir) (deleteDir newsym)
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createSymbolicLink sympoint newsym
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-- |Copies the given regular file to the given destination.
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@ -534,34 +488,44 @@ copyFile :: RawFilePath -- ^ source file
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-> IO ()
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copyFile from to cm = do
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throwSameFile from to
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bracket (do
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fd <- openFd from SPI.ReadOnly [SPDF.oNofollow] Nothing
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handle <- SPI.fdToHandle fd
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pure (fd, handle))
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(\(_, handle) -> SIO.hClose handle)
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bracket
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(do
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fd <- openFd from SPI.ReadOnly [SPDF.oNofollow] Nothing
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handle <- SPI.fdToHandle fd
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pure (fd, handle)
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)
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(\(_, handle) -> SIO.hClose handle)
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$ \(fromFd, fH) -> do
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sourceFileMode <- System.Posix.Files.ByteString.fileMode <$> getFdStatus fromFd
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let dflags = [SPDF.oNofollow, case cm of
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Strict -> SPDF.oExcl
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Overwrite -> SPDF.oTrunc]
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bracketeer (do
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fd <- openFd to SPI.WriteOnly dflags $ Just sourceFileMode
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handle <- SPI.fdToHandle fd
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pure (fd, handle))
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(\(_, handle) -> SIO.hClose handle)
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(\(_, handle) -> do
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SIO.hClose handle
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case cm of
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-- if we created the file and copying failed, it's
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-- safe to clean up
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Strict -> deleteFile to
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Overwrite -> pure ())
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$ \(_, tH) -> do
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SIO.hSetBinaryMode fH True
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SIO.hSetBinaryMode tH True
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streamlyCopy (fH, tH)
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where
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streamlyCopy (fH, tH) = S.fold (FH.writeChunks tH) $ IFH.toChunksWithBufferOf (256*1024) fH
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sourceFileMode <- System.Posix.Files.ByteString.fileMode
|
||||
<$> getFdStatus fromFd
|
||||
let dflags =
|
||||
[ SPDF.oNofollow
|
||||
, case cm of
|
||||
Strict -> SPDF.oExcl
|
||||
Overwrite -> SPDF.oTrunc
|
||||
]
|
||||
bracketeer
|
||||
(do
|
||||
fd <- openFd to SPI.WriteOnly dflags $ Just sourceFileMode
|
||||
handle <- SPI.fdToHandle fd
|
||||
pure (fd, handle)
|
||||
)
|
||||
(\(_, handle) -> SIO.hClose handle)
|
||||
(\(_, handle) -> do
|
||||
SIO.hClose handle
|
||||
case cm of
|
||||
-- if we created the file and copying failed, it's
|
||||
-- safe to clean up
|
||||
Strict -> deleteFile to
|
||||
Overwrite -> pure ()
|
||||
)
|
||||
$ \(_, tH) -> do
|
||||
SIO.hSetBinaryMode fH True
|
||||
SIO.hSetBinaryMode tH True
|
||||
streamlyCopy (fH, tH)
|
||||
where
|
||||
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
|
||||
-- symbolic link it is just recreated, even if it points to a directory.
|
||||
@ -581,10 +545,10 @@ easyCopy :: RawFilePath
|
||||
easyCopy from to cm rm = do
|
||||
ftype <- getFileType from
|
||||
case ftype of
|
||||
SymbolicLink -> recreateSymlink from to cm
|
||||
RegularFile -> copyFile from to cm
|
||||
Directory -> copyDirRecursive from to cm rm
|
||||
_ -> return ()
|
||||
SymbolicLink -> recreateSymlink from to cm
|
||||
RegularFile -> copyFile from to cm
|
||||
Directory -> copyDirRecursive from to cm rm
|
||||
_ -> return ()
|
||||
|
||||
|
||||
|
||||
@ -644,19 +608,16 @@ deleteDir = removeDirectory
|
||||
-- - `NoSuchThing` if directory does not exist
|
||||
-- - `PermissionDenied` if we can't open or write to parent directory
|
||||
deleteDirRecursive :: RawFilePath -> IO ()
|
||||
deleteDirRecursive p =
|
||||
catchErrno [eNOTEMPTY, eEXIST]
|
||||
(deleteDir p)
|
||||
$ do
|
||||
files <- getDirsFiles p
|
||||
for_ files $ \file -> do
|
||||
ftype <- getFileType file
|
||||
case ftype of
|
||||
SymbolicLink -> deleteFile file
|
||||
Directory -> deleteDirRecursive file
|
||||
RegularFile -> deleteFile file
|
||||
_ -> return ()
|
||||
removeDirectory p
|
||||
deleteDirRecursive p = catchErrno [eNOTEMPTY, eEXIST] (deleteDir p) $ do
|
||||
files <- getDirsFiles p
|
||||
for_ files $ \file -> do
|
||||
ftype <- getFileType file
|
||||
case ftype of
|
||||
SymbolicLink -> deleteFile file
|
||||
Directory -> deleteDirRecursive file
|
||||
RegularFile -> deleteFile file
|
||||
_ -> return ()
|
||||
removeDirectory p
|
||||
|
||||
|
||||
-- |Deletes a file, directory or symlink.
|
||||
@ -687,18 +648,16 @@ easyDelete p = do
|
||||
|
||||
-- |Opens a file appropriately by invoking xdg-open. The file type
|
||||
-- is not checked. This forks a process.
|
||||
openFile :: RawFilePath
|
||||
-> IO ProcessID
|
||||
openFile fp =
|
||||
SPP.forkProcess $ SPP.executeFile "xdg-open" True [fp] Nothing
|
||||
openFile :: RawFilePath -> IO ProcessID
|
||||
openFile fp = SPP.forkProcess
|
||||
$ SPP.executeFile (UTF8.fromString "xdg-open") True [fp] Nothing
|
||||
|
||||
|
||||
-- |Executes a program with the given arguments. This forks a process.
|
||||
executeFile :: RawFilePath -- ^ program
|
||||
-> [ByteString] -- ^ arguments
|
||||
-> IO ProcessID
|
||||
executeFile fp args =
|
||||
SPP.forkProcess $ SPP.executeFile fp True args Nothing
|
||||
executeFile fp args = SPP.forkProcess $ SPP.executeFile fp True args Nothing
|
||||
|
||||
|
||||
|
||||
@ -718,11 +677,14 @@ executeFile fp args =
|
||||
-- - `NoSuchThing` if any of the parent components of the path
|
||||
-- do not exist
|
||||
createRegularFile :: FileMode -> RawFilePath -> IO ()
|
||||
createRegularFile fm destBS =
|
||||
bracket (SPI.openFd destBS SPI.WriteOnly (Just fm)
|
||||
(SPI.defaultFileFlags { exclusive = True }))
|
||||
SPI.closeFd
|
||||
(\_ -> return ())
|
||||
createRegularFile fm destBS = bracket
|
||||
(SPI.openFd destBS
|
||||
SPI.WriteOnly
|
||||
(Just fm)
|
||||
(SPI.defaultFileFlags { exclusive = True })
|
||||
)
|
||||
SPI.closeFd
|
||||
(\_ -> return ())
|
||||
|
||||
|
||||
-- |Create an empty directory at the given directory with the given filename.
|
||||
@ -769,18 +731,21 @@ createDirIfMissing fm destBS =
|
||||
--
|
||||
-- Note: calls `getcwd` if the input path is a relative path
|
||||
createDirRecursive :: FileMode -> RawFilePath -> IO ()
|
||||
createDirRecursive fm p =
|
||||
go p
|
||||
where
|
||||
go :: RawFilePath -> IO ()
|
||||
go dest = do
|
||||
catchIOError (createDirectory dest fm) $ \e -> do
|
||||
errno <- getErrno
|
||||
case errno of
|
||||
en | en == eEXIST -> unlessM (doesDirectoryExist dest) (ioError e)
|
||||
| en == eNOENT -> createDirRecursive fm (takeDirectory dest)
|
||||
>> createDirectory dest fm
|
||||
| otherwise -> ioError e
|
||||
createDirRecursive fm p = go p
|
||||
where
|
||||
go :: RawFilePath -> IO ()
|
||||
go dest = do
|
||||
catchIOError (createDirectory dest fm) $ \e -> do
|
||||
errno <- getErrno
|
||||
case errno of
|
||||
en
|
||||
| en == eEXIST
|
||||
-> unlessM (doesDirectoryExist dest) (ioError e)
|
||||
| en == eNOENT
|
||||
-> createDirRecursive fm (takeDirectory dest)
|
||||
>> createDirectory dest fm
|
||||
| otherwise
|
||||
-> ioError e
|
||||
|
||||
|
||||
-- |Create a symlink.
|
||||
@ -796,8 +761,7 @@ createDirRecursive fm p =
|
||||
createSymlink :: RawFilePath -- ^ destination file
|
||||
-> RawFilePath -- ^ path the symlink points to
|
||||
-> IO ()
|
||||
createSymlink destBS sympoint
|
||||
= createSymbolicLink sympoint destBS
|
||||
createSymlink destBS sympoint = createSymbolicLink sympoint destBS
|
||||
|
||||
|
||||
|
||||
@ -875,13 +839,13 @@ moveFile from to cm = do
|
||||
throwSameFile from to
|
||||
case cm of
|
||||
Strict -> catchErrno [eXDEV] (renameFile from to) $ do
|
||||
easyCopy from to Strict FailEarly
|
||||
easyDelete from
|
||||
easyCopy from to Strict FailEarly
|
||||
easyDelete from
|
||||
Overwrite -> do
|
||||
ft <- getFileType from
|
||||
ft <- getFileType from
|
||||
writable <- do
|
||||
e <- doesFileExist to
|
||||
if e then isWritable to else pure False
|
||||
e <- doesFileExist to
|
||||
if e then isWritable to else pure False
|
||||
|
||||
case ft of
|
||||
RegularFile -> do
|
||||
@ -936,12 +900,12 @@ readFile path = do
|
||||
-- - `PermissionDenied` if we cannot read the file or the directory
|
||||
-- containting it
|
||||
-- - `NoSuchThing` if the file does not exist
|
||||
readFileStream :: RawFilePath
|
||||
-> IO (SerialT IO ByteString)
|
||||
readFileStream :: RawFilePath -> IO (SerialT IO ByteString)
|
||||
readFileStream fp = do
|
||||
fd <- openFd fp SPI.ReadOnly [] Nothing
|
||||
fd <- openFd fp SPI.ReadOnly [] Nothing
|
||||
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
|
||||
|
||||
|
||||
@ -966,7 +930,8 @@ writeFile :: RawFilePath
|
||||
-> ByteString
|
||||
-> IO ()
|
||||
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.
|
||||
@ -985,10 +950,11 @@ writeFileL :: RawFilePath
|
||||
-> L.ByteString
|
||||
-> IO ()
|
||||
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)
|
||||
where
|
||||
streamlyCopy tH = S.fold (FH.writeChunks tH) $ SL.toChunks lbs
|
||||
where streamlyCopy tH = S.fold (FH.writeChunks tH) $ SL.toChunks lbs
|
||||
|
||||
|
||||
-- |Append a given ByteString to a file.
|
||||
@ -1002,8 +968,8 @@ writeFileL fp fmode lbs = do
|
||||
-- - `NoSuchThing` if the file does not exist
|
||||
appendFile :: RawFilePath -> ByteString -> IO ()
|
||||
appendFile fp bs =
|
||||
bracket (openFd fp SPI.WriteOnly [SPDF.oAppend] Nothing)
|
||||
(SPI.closeFd) $ \fd -> void $ SPB.fdWrite fd bs
|
||||
bracket (openFd fp SPI.WriteOnly [SPDF.oAppend] Nothing) (SPI.closeFd)
|
||||
$ \fd -> void $ SPB.fdWrite fd bs
|
||||
|
||||
|
||||
|
||||
@ -1015,8 +981,8 @@ appendFile fp bs =
|
||||
|
||||
-- |Default permissions for a new file.
|
||||
newFilePerms :: FileMode
|
||||
newFilePerms
|
||||
= ownerWriteMode
|
||||
newFilePerms =
|
||||
ownerWriteMode
|
||||
`unionFileModes` ownerReadMode
|
||||
`unionFileModes` groupWriteMode
|
||||
`unionFileModes` groupReadMode
|
||||
@ -1026,8 +992,8 @@ newFilePerms
|
||||
|
||||
-- |Default permissions for a new directory.
|
||||
newDirPerms :: FileMode
|
||||
newDirPerms
|
||||
= ownerModes
|
||||
newDirPerms =
|
||||
ownerModes
|
||||
`unionFileModes` groupExecuteMode
|
||||
`unionFileModes` groupReadMode
|
||||
`unionFileModes` otherExecuteMode
|
||||
@ -1047,9 +1013,12 @@ newDirPerms
|
||||
-- Only eNOENT is catched (and returns False).
|
||||
doesExist :: RawFilePath -> IO Bool
|
||||
doesExist bs =
|
||||
catchErrno [eNOENT] (do
|
||||
_ <- PF.getSymbolicLinkStatus bs
|
||||
return $ True)
|
||||
catchErrno
|
||||
[eNOENT]
|
||||
(do
|
||||
_ <- PF.getSymbolicLinkStatus bs
|
||||
return $ True
|
||||
)
|
||||
$ return False
|
||||
|
||||
|
||||
@ -1059,9 +1028,12 @@ doesExist bs =
|
||||
-- Only eNOENT is catched (and returns False).
|
||||
doesFileExist :: RawFilePath -> IO Bool
|
||||
doesFileExist bs =
|
||||
catchErrno [eNOENT] (do
|
||||
fs <- PF.getSymbolicLinkStatus bs
|
||||
return $ not . PF.isDirectory $ fs)
|
||||
catchErrno
|
||||
[eNOENT]
|
||||
(do
|
||||
fs <- PF.getSymbolicLinkStatus bs
|
||||
return $ not . PF.isDirectory $ fs
|
||||
)
|
||||
$ return False
|
||||
|
||||
|
||||
@ -1071,9 +1043,12 @@ doesFileExist bs =
|
||||
-- Only eNOENT is catched (and returns False).
|
||||
doesDirectoryExist :: RawFilePath -> IO Bool
|
||||
doesDirectoryExist bs =
|
||||
catchErrno [eNOENT] (do
|
||||
fs <- PF.getSymbolicLinkStatus bs
|
||||
return $ PF.isDirectory fs)
|
||||
catchErrno
|
||||
[eNOENT]
|
||||
(do
|
||||
fs <- PF.getSymbolicLinkStatus bs
|
||||
return $ PF.isDirectory fs
|
||||
)
|
||||
$ return False
|
||||
|
||||
|
||||
@ -1113,12 +1088,9 @@ isExecutable bs = fileAccess bs False False True
|
||||
-- |Checks whether the directory at the given path exists and can be
|
||||
-- opened. This invokes `openDirStream` which follows symlinks.
|
||||
canOpenDirectory :: RawFilePath -> IO Bool
|
||||
canOpenDirectory bs =
|
||||
handleIOError (\_ -> return False) $ do
|
||||
bracket (openDirStream bs)
|
||||
closeDirStream
|
||||
(\_ -> return ())
|
||||
return True
|
||||
canOpenDirectory bs = handleIOError (\_ -> return False) $ do
|
||||
bracket (openDirStream bs) closeDirStream (\_ -> return ())
|
||||
return True
|
||||
|
||||
|
||||
|
||||
@ -1176,12 +1148,10 @@ getDirsFiles p = do
|
||||
getDirsFiles' :: RawFilePath -- ^ dir to read
|
||||
-> IO [RawFilePath]
|
||||
getDirsFiles' fp = do
|
||||
fd <- openFd fp SPI.ReadOnly [SPDF.oNofollow] Nothing
|
||||
fd <- openFd fp SPI.ReadOnly [SPDF.oNofollow] Nothing
|
||||
rawContents <- getDirectoryContents' fd
|
||||
fmap catMaybes $ for rawContents $ \(_, f) ->
|
||||
if FP.isSpecialDirectoryEntry f
|
||||
then pure Nothing
|
||||
else pure $ Just f
|
||||
if FP.isSpecialDirectoryEntry f then pure Nothing else pure $ Just f
|
||||
|
||||
|
||||
|
||||
@ -1202,16 +1172,15 @@ getFileType :: RawFilePath -> IO FileType
|
||||
getFileType fp = do
|
||||
fs <- PF.getSymbolicLinkStatus fp
|
||||
decide fs
|
||||
where
|
||||
decide fs
|
||||
| PF.isDirectory fs = return Directory
|
||||
| PF.isRegularFile fs = return RegularFile
|
||||
| PF.isSymbolicLink fs = return SymbolicLink
|
||||
| PF.isBlockDevice fs = return BlockDevice
|
||||
| PF.isCharacterDevice fs = return CharacterDevice
|
||||
| PF.isNamedPipe fs = return NamedPipe
|
||||
| PF.isSocket fs = return Socket
|
||||
| otherwise = ioError $ userError "No filetype?!"
|
||||
where
|
||||
decide fs | PF.isDirectory fs = return Directory
|
||||
| PF.isRegularFile fs = return RegularFile
|
||||
| PF.isSymbolicLink fs = return SymbolicLink
|
||||
| PF.isBlockDevice fs = return BlockDevice
|
||||
| PF.isCharacterDevice fs = return CharacterDevice
|
||||
| PF.isNamedPipe fs = return NamedPipe
|
||||
| PF.isSocket fs = return Socket
|
||||
| otherwise = ioError $ userError "No filetype?!"
|
||||
|
||||
|
||||
|
||||
@ -1243,4 +1212,3 @@ toAbs bs = do
|
||||
False -> do
|
||||
cwd <- getWorkingDirectory
|
||||
return $ cwd </> bs
|
||||
|
||||
|
||||
@ -26,19 +26,14 @@ library
|
||||
buildable: False
|
||||
exposed-modules: HPath.IO
|
||||
build-depends: base >= 4.8 && <5
|
||||
, IfElse
|
||||
, bytestring >= 0.10.0.0
|
||||
, exceptions
|
||||
, hpath >= 0.11 && < 0.12
|
||||
, hpath-directory >= 0.13 && < 0.14
|
||||
, hpath-filepath >= 0.10.2 && < 0.11
|
||||
, safe-exceptions >= 0.1
|
||||
, streamly >= 0.7
|
||||
, streamly-bytestring >= 0.1
|
||||
, time >= 1.8
|
||||
, unix >= 2.5
|
||||
, unix-bytestring
|
||||
, utf8-string
|
||||
if !impl(ghc>=7.11)
|
||||
build-depends: transformers
|
||||
hs-source-dirs: src
|
||||
|
||||
@ -27,10 +27,7 @@
|
||||
-- For other functions (like `copyFile`), the behavior on these file types is
|
||||
-- unreliable/unsafe. Check the documentation of those functions for details.
|
||||
|
||||
{-# LANGUAGE CPP #-}
|
||||
{-# LANGUAGE PackageImports #-}
|
||||
{-# LANGUAGE OverloadedStrings #-}
|
||||
{-# LANGUAGE FlexibleContexts #-}
|
||||
|
||||
module HPath.IO
|
||||
(
|
||||
@ -68,8 +65,8 @@ module HPath.IO
|
||||
, writeFileL
|
||||
, appendFile
|
||||
-- * File permissions
|
||||
, newFilePerms
|
||||
, newDirPerms
|
||||
, RD.newFilePerms
|
||||
, RD.newDirPerms
|
||||
-- * File checks
|
||||
, doesExist
|
||||
, doesFileExist
|
||||
@ -94,180 +91,43 @@ module HPath.IO
|
||||
, withHandle
|
||||
, module System.Posix.RawFilePath.Directory.Errors
|
||||
)
|
||||
where
|
||||
where
|
||||
|
||||
|
||||
import Control.Applicative
|
||||
(
|
||||
(<$>)
|
||||
)
|
||||
import Control.Exception.Safe
|
||||
(
|
||||
IOException
|
||||
, bracket
|
||||
, bracketOnError
|
||||
, throwIO
|
||||
, finally
|
||||
)
|
||||
import Control.Monad
|
||||
(
|
||||
unless
|
||||
, void
|
||||
, when
|
||||
)
|
||||
import Control.Monad.Catch (MonadThrow(..))
|
||||
import Control.Monad.IfElse
|
||||
(
|
||||
unlessM
|
||||
)
|
||||
import Data.ByteString
|
||||
(
|
||||
ByteString
|
||||
)
|
||||
import Control.Exception.Safe ( bracketOnError
|
||||
, finally
|
||||
)
|
||||
import Control.Monad.Catch ( MonadThrow(..) )
|
||||
|
||||
import Data.ByteString ( ByteString )
|
||||
import Data.Traversable ( for )
|
||||
import Data.Functor ( ($>) )
|
||||
#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 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.POSIX (getPOSIXTime, posixSecondsToUTCTime, 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 Prelude hiding (appendFile, readFile, writeFile)
|
||||
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 System.IO.Error
|
||||
(
|
||||
catchIOError
|
||||
, ioeGetErrorType
|
||||
)
|
||||
import System.Posix.ByteString
|
||||
(
|
||||
exclusive
|
||||
)
|
||||
import System.Posix.Directory.ByteString
|
||||
(
|
||||
createDirectory
|
||||
, closeDirStream
|
||||
, getWorkingDirectory
|
||||
, 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.Types
|
||||
(
|
||||
FileMode
|
||||
, ProcessID
|
||||
, Fd
|
||||
, EpochTime
|
||||
)
|
||||
import System.Posix.Time
|
||||
|
||||
import qualified System.Posix.RawFilePath.Directory as RD
|
||||
import System.Posix.RawFilePath.Directory
|
||||
(
|
||||
FileType
|
||||
, RecursiveErrorMode
|
||||
, CopyMode
|
||||
)
|
||||
import qualified Data.ByteString.Lazy as L
|
||||
import Data.Time.Clock
|
||||
import Data.Time.Clock.POSIX ( POSIXTime )
|
||||
import HPath
|
||||
import Prelude hiding ( appendFile
|
||||
, readFile
|
||||
, writeFile
|
||||
)
|
||||
import Streamly
|
||||
import qualified System.IO as SIO
|
||||
import System.Posix.Directory.ByteString
|
||||
( getWorkingDirectory )
|
||||
import qualified "unix" System.Posix.IO.ByteString
|
||||
as SPI
|
||||
import System.Posix.FD ( openFd )
|
||||
import System.Posix.RawFilePath.Directory.Errors
|
||||
import System.Posix.Types ( FileMode
|
||||
, ProcessID
|
||||
, EpochTime
|
||||
)
|
||||
import qualified System.Posix.RawFilePath.Directory
|
||||
as RD
|
||||
import System.Posix.RawFilePath.Directory
|
||||
( FileType
|
||||
, RecursiveErrorMode
|
||||
, CopyMode
|
||||
)
|
||||
|
||||
|
||||
|
||||
@ -337,8 +197,8 @@ copyDirRecursive :: Path b1 -- ^ source dir
|
||||
-> CopyMode
|
||||
-> RecursiveErrorMode
|
||||
-> IO ()
|
||||
copyDirRecursive (Path fromp) (Path destdirp) cm rm
|
||||
= RD.copyDirRecursive fromp destdirp cm rm
|
||||
copyDirRecursive (Path fromp) (Path destdirp) cm rm =
|
||||
RD.copyDirRecursive fromp destdirp cm rm
|
||||
|
||||
|
||||
-- |Recreate a symlink.
|
||||
@ -374,8 +234,8 @@ recreateSymlink :: Path b1 -- ^ the old symlink file
|
||||
-> Path b2 -- ^ destination file
|
||||
-> CopyMode
|
||||
-> IO ()
|
||||
recreateSymlink (Path symsourceBS) (Path newsymBS) cm
|
||||
= RD.recreateSymlink symsourceBS newsymBS cm
|
||||
recreateSymlink (Path symsourceBS) (Path newsymBS) cm =
|
||||
RD.recreateSymlink symsourceBS newsymBS cm
|
||||
|
||||
|
||||
-- |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
|
||||
--
|
||||
-- Note: may call `getcwd` in Overwrite mode (if destination is a relative path)
|
||||
easyCopy :: Path b1
|
||||
-> Path b2
|
||||
-> CopyMode
|
||||
-> RecursiveErrorMode
|
||||
-> IO ()
|
||||
easyCopy :: Path b1 -> Path b2 -> CopyMode -> RecursiveErrorMode -> IO ()
|
||||
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
|
||||
-- is not checked. This forks a process.
|
||||
openFile :: Path b
|
||||
-> IO ProcessID
|
||||
openFile :: Path b -> IO ProcessID
|
||||
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
|
||||
-- containting it
|
||||
-- - `NoSuchThing` if the file does not exist
|
||||
readFileStream :: Path b
|
||||
-> IO (SerialT IO ByteString)
|
||||
readFileStream :: Path b -> IO (SerialT IO ByteString)
|
||||
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 ]--
|
||||
@ -920,7 +747,7 @@ setModificationTimeHiRes (Path bs) t = RD.setModificationTimeHiRes bs t
|
||||
-- - `PathParseException` if a filename could not be parsed (should never happen)
|
||||
getDirsFiles :: Path b -- ^ dir to read
|
||||
-> IO [Path b]
|
||||
getDirsFiles p@(Path fp) = do
|
||||
getDirsFiles p = do
|
||||
contents <- getDirsFiles' p
|
||||
pure $ fmap (p </>) contents
|
||||
|
||||
@ -928,7 +755,7 @@ getDirsFiles p@(Path fp) = do
|
||||
-- | Like 'getDirsFiles', but returns the filename only, instead
|
||||
-- of prepending the base path.
|
||||
getDirsFiles' :: Path b -- ^ dir to read
|
||||
-> IO [Path Rel]
|
||||
-> IO [Path Rel]
|
||||
getDirsFiles' (Path fp) = do
|
||||
rawContents <- RD.getDirsFiles' fp
|
||||
for rawContents $ \r -> parseRel r
|
||||
@ -981,11 +808,11 @@ toAbs :: Path b -> IO (Path Abs)
|
||||
toAbs (Path bs) = do
|
||||
let mabs = parseAbs bs :: Maybe (Path Abs)
|
||||
case mabs of
|
||||
Just a -> return a
|
||||
Nothing -> do
|
||||
Just a -> return a
|
||||
Nothing -> do
|
||||
cwd <- getWorkingDirectory >>= parseAbs
|
||||
rel <- parseRel bs -- we know it must be relative now
|
||||
return $ cwd </> rel
|
||||
r <- parseRel bs -- we know it must be relative now
|
||||
return $ cwd </> r
|
||||
|
||||
|
||||
-- | 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
|
||||
-- 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
|
||||
path <- parseAny bs
|
||||
action path
|
||||
@ -1017,6 +847,6 @@ withHandle :: ByteString
|
||||
withHandle bs mode action = do
|
||||
path <- parseAny bs
|
||||
handle <-
|
||||
bracketOnError (openFd bs mode [] (Just newFilePerms)) (SPI.closeFd)
|
||||
bracketOnError (openFd bs mode [] (Just RD.newFilePerms)) (SPI.closeFd)
|
||||
$ SPI.fdToHandle
|
||||
finally (action (handle, path)) (SIO.hClose handle)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user