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{- -*- Mode: haskell; -*-
Haskell magic Interface
Copyright (C) 2005 John Goerzen <jgoerzen@complete.org>
This code is under a 3-clause BSD license; see COPYING for details.
-}
{- |
Module : Magic.Init
Copyright : Copyright (C) 2005 John Goerzen
License : BSD
Maintainer : John Goerzen,
Maintainer : jgoerzen\@complete.org
Stability : provisional
Portability: portable
Initialization and shutdown for magic programs
Written by John Goerzen, jgoerzen\@complete.org
-}
module Magic.Init(magicOpen, magicLoad, magicLoadDefault)
where
import Foreign.Ptr
import Foreign.C.String
import Magic.Types
import Foreign.C.Types
import Magic.Utils
import Magic.TypesLL
import Foreign.Marshal.Utils
{- | Create a Magic object. You must call either 'magicLoadDefault'
or 'magicLoad' after this.
-}
magicOpen :: [MagicFlag] -> IO Magic
magicOpen mfl =
fromMagicPtr "magicOpen" (magic_open flags)
where flags = flaglist2int mfl
{- | Load the system's default magic database. -}
magicLoadDefault :: Magic -> IO ()
magicLoadDefault m = withMagicPtr m (\cmagic ->
checkIntError "magicLoadDefault" m $ magic_load cmagic nullPtr)
{- | Load the specified magic database(s). The given string may contain
multiple colon-separated pathnames. -}
magicLoad :: Magic -> String -> IO ()
magicLoad m s = withMagicPtr m (\cmagic ->
withCString s (\cs ->
checkIntError "magicLoad" m $ magic_load cmagic cs))
foreign import ccall unsafe "magic.h magic_open"
magic_open :: CInt -> IO (Ptr CMagic)
foreign import ccall unsafe "magic.h magic_load"
magic_load :: Ptr CMagic -> CString -> IO CInt
|
