{-# LANGUAGE CPP  #-}
{-# LANGUAGE Safe #-}
{-
Copyright (c) 2005-2011 John Goerzen <jgoerzen@complete.org>

All rights reserved.

For license and copyright information, see the file LICENSE
-}

{- |
   Module     : System.IO.StatCompat
   Copyright  : Copyright (C) 2005-2011 John Goerzen
   SPDX-License-Identifier: BSD-3-Clause

   Stability  : stable
   Portability: portable

Provide a stat-like structure for use in MissingH.  Especially
useful with HVFS and on Windows.  See also "System.IO.WindowsCompat".

-}

module System.IO.StatCompat
where
import           System.Posix.Consts
import           System.Posix.Types
#if !(defined(mingw32_HOST_OS) || defined(mingw32_TARGET_OS) || defined(__MINGW32__))
import           System.Posix.Files  (intersectFileModes)
#endif
import           Data.Bits           ((.&.))

#if (defined(mingw32_HOST_OS) || defined(mingw32_TARGET_OS) || defined(__MINGW32__))
type LinkCount = Int
type UserID = Int
type GroupID = Int
#endif

data FileStatusCompat =
    FileStatusCompat {FileStatusCompat -> DeviceID
deviceID         :: DeviceID,
                      FileStatusCompat -> FileID
fileID           :: FileID,
                      FileStatusCompat -> FileMode
fileMode         :: FileMode,
                      FileStatusCompat -> LinkCount
linkCount        :: LinkCount,
                      FileStatusCompat -> UserID
fileOwner        :: UserID,
                      FileStatusCompat -> GroupID
fileGroup        :: GroupID,
                      FileStatusCompat -> DeviceID
specialDeviceID  :: DeviceID,
                      FileStatusCompat -> FileOffset
fileSize         :: FileOffset,
                      FileStatusCompat -> EpochTime
accessTime       :: EpochTime,
                      FileStatusCompat -> EpochTime
modificationTime :: EpochTime,
                      FileStatusCompat -> EpochTime
statusChangeTime :: EpochTime
                     }

sc_helper :: FileMode -> FileStatusCompat -> Bool
sc_helper :: FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
comp FileStatusCompat
stat =
    (FileStatusCompat -> FileMode
fileMode FileStatusCompat
stat FileMode -> FileMode -> FileMode
`intersectFileModes` FileMode
fileTypeModes) FileMode -> FileMode -> Bool
forall a. Eq a => a -> a -> Bool
== FileMode
comp

isBlockDevice,isCharacterDevice,isNamedPipe,isRegularFile,isDirectory,isSymbolicLink,isSocket :: FileStatusCompat -> Bool
isBlockDevice :: FileStatusCompat -> Bool
isBlockDevice = FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
blockSpecialMode
isCharacterDevice :: FileStatusCompat -> Bool
isCharacterDevice = FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
characterSpecialMode
isNamedPipe :: FileStatusCompat -> Bool
isNamedPipe = FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
namedPipeMode
isRegularFile :: FileStatusCompat -> Bool
isRegularFile = FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
regularFileMode
isDirectory :: FileStatusCompat -> Bool
isDirectory = FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
directoryMode
isSymbolicLink :: FileStatusCompat -> Bool
isSymbolicLink = FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
symbolicLinkMode
isSocket :: FileStatusCompat -> Bool
isSocket = FileMode -> FileStatusCompat -> Bool
sc_helper FileMode
socketMode

#if (defined(mingw32_HOST_OS) || defined(mingw32_TARGET_OS) || defined(__MINGW32__))
intersectFileModes :: FileMode -> FileMode -> FileMode
intersectFileModes m1 m2 = m1 .&. m2
#endif