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authorEgor Tensin <Egor.Tensin@gmail.com>2016-07-11 18:55:26 +0300
committerEgor Tensin <Egor.Tensin@gmail.com>2016-07-11 18:55:26 +0300
commitd53c986113cef78e2b504ecd5a4bba60999a55e1 (patch)
tree445b892abcfa272153dc39968838dbdc5d34d684 /RegUtils.hs
parentREADME update (diff)
downloadwindows-env-d53c986113cef78e2b504ecd5a4bba60999a55e1.tar.gz
windows-env-d53c986113cef78e2b504ecd5a4bba60999a55e1.zip
become a proper stack project
Diffstat (limited to 'RegUtils.hs')
-rw-r--r--RegUtils.hs91
1 files changed, 0 insertions, 91 deletions
diff --git a/RegUtils.hs b/RegUtils.hs
deleted file mode 100644
index eccb6ad..0000000
--- a/RegUtils.hs
+++ /dev/null
@@ -1,91 +0,0 @@
-{-
- - Copyright 2015 Egor Tensin <Egor.Tensin@gmail.com>
- - This file is licensed under the terms of the MIT License.
- - See LICENSE.txt for details.
--}
-
-module RegUtils ( delValue
- , getString
- , hkcu
- , hklm
- , setString ) where
-
-import Control.Exception ( bracket )
-import Data.Maybe ( fromMaybe )
-import Foreign.ForeignPtr ( withForeignPtr )
-import Foreign.Marshal.Alloc ( alloca, allocaBytes )
-import Foreign.Ptr ( castPtr, plusPtr )
-import Foreign.Storable ( peek, poke, sizeOf )
-import Graphics.Win32.Window ( sendMessage )
-import System.IO.Error ( mkIOError, doesNotExistErrorType )
-import System.Win32.Types
-import System.Win32.Registry
-
-getType :: HKEY -> String -> String -> IO (Maybe RegValueType)
-getType key subKeyPath valueName =
- bracket (regOpenKey key subKeyPath) regCloseKey $ \key ->
- withForeignPtr key $ \p_key ->
- withTString valueName $ \p_valueName ->
- alloca $ \p_type -> do
- ret <- c_RegQueryValueEx p_key p_valueName nullPtr p_type nullPtr nullPtr
- case ret of
- 0x0 -> do
- type_ <- peek p_type
- return $ Just type_
- 0x2 -> return Nothing
- _ -> failWith "RegQueryValueEx" ret
-
-getString :: HKEY -> String -> String -> IO String
-getString key subKeyPath valueName =
- bracket (regOpenKey key subKeyPath) regCloseKey $ \key ->
- withForeignPtr key $ \p_key ->
- withTString valueName $ \p_valueName ->
- alloca $ \dataSizePtr -> do
- poke dataSizePtr 0
- ret <- c_RegQueryValueEx p_key p_valueName nullPtr nullPtr nullPtr dataSizePtr
- case ret of
- 0x0 -> do
- dataSize <- peek dataSizePtr
- let newDataSize = dataSize + fromIntegral (sizeOf (undefined :: TCHAR))
- poke dataSizePtr newDataSize
- allocaBytes (fromIntegral newDataSize) $ \dataPtr -> do
- poke (castPtr $ plusPtr dataPtr $ fromIntegral dataSize) '\0'
- failUnlessSuccess "RegQueryValueEx" $
- c_RegQueryValueEx p_key p_valueName nullPtr nullPtr dataPtr dataSizePtr
- peekTString $ castPtr dataPtr
- 0x2 -> ioError $ mkIOError doesNotExistErrorType "RegQueryValueEx" Nothing $ Just (subKeyPath ++ "\\" ++ valueName)
- _ -> failWith "RegQueryValueEx" ret
-
-setString :: HKEY -> String -> String -> String -> IO ()
-setString key subKeyPath valueName valueValue =
- bracket (regOpenKey key subKeyPath) regCloseKey $ \subKey ->
- withTString valueValue $ \p_valueValue -> do
- type_ <- getType key subKeyPath valueName
- regSetValueEx subKey valueName (fromMaybe rEG_SZ type_) p_valueValue $ (length valueValue + 1) * sizeOf (undefined :: TCHAR)
- notifyEnvironmentUpdate
-
-notifyEnvironmentUpdate :: IO ()
-notifyEnvironmentUpdate =
- withTString "Environment" $ \p_lparam -> do
- let wparam = 0
- let lparam = fromIntegral $ castPtrToUINTPtr p_lparam
- let hwnd = castUINTPtrToPtr 0xffff
- sendMessage hwnd wM_SETTINGCHANGE wparam lparam
- return ()
- where
- wM_SETTINGCHANGE = 0x1A
-
-delValue :: HKEY -> String -> String -> IO ()
-delValue key subKeyPath valueName =
- bracket (regOpenKey key subKeyPath) regCloseKey $ \subKey ->
- withForeignPtr subKey $ \subKeyPtr ->
- withTString valueName $ \p_valueName -> do
- ret <- c_RegDeleteValue subKeyPtr p_valueName
- notifyEnvironmentUpdate
- case ret of
- 0x0 -> return ()
- 0x2 -> ioError $ mkIOError doesNotExistErrorType "RegQueryValueEx" Nothing $ Just (subKeyPath ++ "\\" ++ valueName)
- _ -> failWith "RegDeleteValue" ret
-
-hkcu = hKEY_CURRENT_USER
-hklm = hKEY_LOCAL_MACHINE