{-# 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 safe System.Posix.Consts
    ( blockSpecialMode,
      characterSpecialMode,
      namedPipeMode,
      regularFileMode,
      directoryMode,
      fileTypeModes,
      socketMode,
      symbolicLinkMode )
import safe System.Posix.Types
    ( DeviceID,
      EpochTime,
      FileID,
      FileMode,
      FileOffset )

#if !(defined(mingw32_HOST_OS) || defined(mingw32_TARGET_OS) || defined(__MINGW32__))
import safe System.Posix.Types ( LinkCount, UserID, GroupID )
import safe System.Posix.Files ( intersectFileModes )
#else
import safe Data.Bits          ( (.&.) )

type LinkCount = Int
type UserID = Int
type GroupID = Int

intersectFileModes :: FileMode -> FileMode -> FileMode
intersectFileModes m1 m2 = m1 .&. m2
#endif

data FileStatusCompat =
    FileStatusCompat {FileStatusCompat -> DeviceID
deviceID         :: DeviceID,
                      FileStatusCompat -> FileID
fileID           :: FileID,
                      FileStatusCompat -> CMode
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 :: CMode -> FileStatusCompat -> Bool
sc_helper CMode
comp FileStatusCompat
stat =
    (FileStatusCompat -> CMode
fileMode FileStatusCompat
stat CMode -> CMode -> CMode
`intersectFileModes` CMode
fileTypeModes) CMode -> CMode -> Bool
forall a. Eq a => a -> a -> Bool
== CMode
comp

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