{-# LINE 1 "System\\Win32\\Console\\Internal.hsc" #-}

{-# LINE 2 "System\\Win32\\Console\\Internal.hsc" #-}
{-# LANGUAGE Safe #-}

{-# LINE 6 "System\\Win32\\Console\\Internal.hsc" #-}
-----------------------------------------------------------------------------

-- |

-- Module      :  System.Win32.Console.Internal

-- Copyright   :  (c) University of Glasgow 2023

-- License     :  BSD-style (see the file LICENSE)

--

-- Maintainer  :  Esa Ilari Vuokko <ei@vuokko.info>

-- Stability   :  provisional

-- Portability :  portable

--

-- Internals for Console modules.

--

-----------------------------------------------------------------------------


module System.Win32.Console.Internal where



#include "windows_cconv.h"


import System.Win32.Types
import Graphics.Win32.GDI.Types (COLORREF)

import Foreign.C.Types (CInt(..))
import Foreign.C.String (CWString)
import Foreign.Ptr (Ptr, plusPtr)
import Foreign.Storable (Storable(..))
import Foreign.Marshal.Array (peekArray, pokeArray)

foreign import WINDOWS_CCONV unsafe "windows.h GetConsoleMode"
        c_GetConsoleMode :: HANDLE -> LPDWORD -> IO BOOL

foreign import WINDOWS_CCONV unsafe "windows.h SetConsoleMode"
        c_SetConsoleMode :: HANDLE -> DWORD -> IO BOOL

foreign import WINDOWS_CCONV unsafe "windows.h GetConsoleCP"
        getConsoleCP :: IO UINT

foreign import WINDOWS_CCONV unsafe "windows.h SetConsoleCP"
        setConsoleCP :: UINT -> IO ()

foreign import WINDOWS_CCONV unsafe "windows.h GetConsoleOutputCP"
        getConsoleOutputCP :: IO UINT

foreign import WINDOWS_CCONV unsafe "windows.h SetConsoleOutputCP"
        setConsoleOutputCP :: UINT -> IO ()

type CtrlEvent = DWORD
cTRL_C_EVENT       :: CtrlEvent
cTRL_C_EVENT       =  0
cTRL_BREAK_EVENT   :: CtrlEvent
cTRL_BREAK_EVENT   =  1

{-# LINE 59 "System\\Win32\\Console\\Internal.hsc" #-}

foreign import WINDOWS_CCONV safe "windows.h GenerateConsoleCtrlEvent"
    c_GenerateConsoleCtrlEvent :: CtrlEvent -> DWORD -> IO BOOL

foreign import WINDOWS_CCONV unsafe "Shellapi.h CommandLineToArgvW"
     c_CommandLineToArgvW :: CWString -> Ptr CInt -> IO (Ptr CWString)

foreign import WINDOWS_CCONV unsafe "processenv.h GetCommandLineW"
        getCommandLineW :: IO LPWSTR

foreign import WINDOWS_CCONV unsafe "processenv.h GetEnvironmentVariableW"
        c_GetEnvironmentVariableW :: LPCWSTR -> LPWSTR -> DWORD -> IO DWORD

foreign import WINDOWS_CCONV unsafe "processenv.h GetEnvironmentStringsW"
        c_GetEnvironmentStringsW :: IO LPWSTR

foreign import WINDOWS_CCONV unsafe "processenv.h FreeEnvironmentStringsW"
  c_FreeEnvironmentStrings :: LPWSTR -> IO Bool

data CONSOLE_SCREEN_BUFFER_INFO = CONSOLE_SCREEN_BUFFER_INFO
    { dwSize              :: COORD
    , dwCursorPosition    :: COORD
    , wAttributes         :: WORD
    , srWindow            :: SMALL_RECT
    , dwMaximumWindowSize :: COORD
    } deriving (Show, Eq)

instance Storable CONSOLE_SCREEN_BUFFER_INFO where
    sizeOf = const (22)
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    alignment _ = 2
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    peek buf = do
        dwSize'              <- ((\hsc_ptr -> peekByteOff hsc_ptr 0)) buf
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        dwCursorPosition'    <- ((\hsc_ptr -> peekByteOff hsc_ptr 4)) buf
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        wAttributes'         <- ((\hsc_ptr -> peekByteOff hsc_ptr 8)) buf
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        srWindow'            <- ((\hsc_ptr -> peekByteOff hsc_ptr 10)) buf
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        dwMaximumWindowSize' <- ((\hsc_ptr -> peekByteOff hsc_ptr 18)) buf
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        return $ CONSOLE_SCREEN_BUFFER_INFO dwSize' dwCursorPosition' wAttributes' srWindow' dwMaximumWindowSize'
    poke buf info = do
        ((\hsc_ptr -> pokeByteOff hsc_ptr 0)) buf (dwSize info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 4)) buf (dwCursorPosition info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 8)) buf (wAttributes info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 10)) buf (srWindow info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 18)) buf (dwMaximumWindowSize info)
{-# LINE 102 "System\\Win32\\Console\\Internal.hsc" #-}

data CONSOLE_SCREEN_BUFFER_INFOEX = CONSOLE_SCREEN_BUFFER_INFOEX
    { dwSizeEx              :: COORD
    , dwCursorPositionEx    :: COORD
    , wAttributesEx         :: WORD
    , srWindowEx            :: SMALL_RECT
    , dwMaximumWindowSizeEx :: COORD
    , wPopupAttributes      :: WORD
    , bFullscreenSupported  :: BOOL
    , colorTable            :: [COLORREF]
      -- ^ Only the first 16 'COLORREF' values passed to the Windows Console

      -- API. If fewer than 16 values, the remainder are padded with @0@ when

      -- passed to the API.

    } deriving (Show, Eq)

instance Storable CONSOLE_SCREEN_BUFFER_INFOEX where
    sizeOf = const (96)
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    alignment = const 4
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    peek buf = do
        dwSize'               <- ((\hsc_ptr -> peekByteOff hsc_ptr 4)) buf
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        dwCursorPosition'     <- ((\hsc_ptr -> peekByteOff hsc_ptr 8)) buf
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        wAttributes'          <- ((\hsc_ptr -> peekByteOff hsc_ptr 12)) buf
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        srWindow'             <- ((\hsc_ptr -> peekByteOff hsc_ptr 14)) buf
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        dwMaximumWindowSize'  <- ((\hsc_ptr -> peekByteOff hsc_ptr 22)) buf
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        wPopupAttributes'     <- ((\hsc_ptr -> peekByteOff hsc_ptr 26)) buf
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        bFullscreenSupported' <- ((\hsc_ptr -> peekByteOff hsc_ptr 28)) buf
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        colorTable'           <- peekArray 16 (((\hsc_ptr -> hsc_ptr `plusPtr` 32)) buf)
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        return $ CONSOLE_SCREEN_BUFFER_INFOEX dwSize' dwCursorPosition'
          wAttributes' srWindow' dwMaximumWindowSize' wPopupAttributes'
          bFullscreenSupported' colorTable'
    poke buf info = do
        ((\hsc_ptr -> pokeByteOff hsc_ptr 0)) buf cbSize
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 4)) buf (dwSizeEx info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 8)) buf (dwCursorPositionEx info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 12)) buf (wAttributesEx info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 14)) buf (srWindowEx info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 22)) buf (dwMaximumWindowSizeEx info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 26)) buf (wPopupAttributes info)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 28)) buf (bFullscreenSupported info)
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        pokeArray (((\hsc_ptr -> hsc_ptr `plusPtr` 32)) buf) colorTable'
{-# LINE 142 "System\\Win32\\Console\\Internal.hsc" #-}
      where
        cbSize :: ULONG
        cbSize = (96)
{-# LINE 145 "System\\Win32\\Console\\Internal.hsc" #-}
        colorTable' = take 16 $ colorTable info ++ repeat 0

data COORD = COORD
    { xPos :: SHORT
    , yPos :: SHORT
    } deriving (Show, Eq)

instance Storable COORD where
    sizeOf = const (4)
{-# LINE 154 "System\\Win32\\Console\\Internal.hsc" #-}
    alignment _ = 2
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    peek buf = do
        x' <- ((\hsc_ptr -> peekByteOff hsc_ptr 0)) buf
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        y' <- ((\hsc_ptr -> peekByteOff hsc_ptr 2)) buf
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        return $ COORD x' y'
    poke buf coord = do
        ((\hsc_ptr -> pokeByteOff hsc_ptr 0)) buf (xPos coord)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 2)) buf (yPos coord)
{-# LINE 162 "System\\Win32\\Console\\Internal.hsc" #-}

data SMALL_RECT = SMALL_RECT
    { leftPos   :: SHORT
    , topPos    :: SHORT
    , rightPos  :: SHORT
    , bottomPos :: SHORT
    } deriving (Show, Eq)

instance Storable SMALL_RECT where
    sizeOf _ = (8)
{-# LINE 172 "System\\Win32\\Console\\Internal.hsc" #-}
    alignment _ = 2
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    peek buf = do
        left'   <- ((\hsc_ptr -> peekByteOff hsc_ptr 0)) buf
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        top'    <- ((\hsc_ptr -> peekByteOff hsc_ptr 2)) buf
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        right'  <- ((\hsc_ptr -> peekByteOff hsc_ptr 4)) buf
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        bottom' <- ((\hsc_ptr -> peekByteOff hsc_ptr 6)) buf
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        return $ SMALL_RECT left' top' right' bottom'
    poke buf small_rect = do
        ((\hsc_ptr -> pokeByteOff hsc_ptr 0)) buf (leftPos small_rect)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 2)) buf (topPos small_rect)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 4)) buf (rightPos small_rect)
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        ((\hsc_ptr -> pokeByteOff hsc_ptr 6)) buf (bottomPos small_rect)
{-# LINE 184 "System\\Win32\\Console\\Internal.hsc" #-}

foreign import WINDOWS_CCONV safe "windows.h GetConsoleScreenBufferInfo"
    c_GetConsoleScreenBufferInfo :: HANDLE -> Ptr CONSOLE_SCREEN_BUFFER_INFO -> IO BOOL

foreign import WINDOWS_CCONV safe "windows.h GetConsoleScreenBufferInfoEx"
    c_GetConsoleScreenBufferInfoEx :: HANDLE -> Ptr CONSOLE_SCREEN_BUFFER_INFOEX -> IO BOOL