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

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

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

-- |

-- Module      :  System.Win32.Console

-- Copyright   :  (c) University of Glasgow 2006

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

--

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

-- Stability   :  provisional

-- Portability :  portable

--

-- A collection of FFI declarations for interfacing with Win32 Console API

--

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


module System.Win32.Console (
        -- * Console mode

        getConsoleMode,
        setConsoleMode,
        eNABLE_ECHO_INPUT,
        eNABLE_EXTENDED_FLAGS,
        eNABLE_INSERT_MODE,
        eNABLE_LINE_INPUT,
        eNABLE_MOUSE_INPUT,
        eNABLE_PROCESSED_INPUT,
        eNABLE_QUICK_EDIT_MODE,
        eNABLE_WINDOW_INPUT,
        eNABLE_VIRTUAL_TERMINAL_INPUT,
        eNABLE_PROCESSED_OUTPUT,
        eNABLE_WRAP_AT_EOL_OUTPUT,
        eNABLE_VIRTUAL_TERMINAL_PROCESSING,
        dISABLE_NEWLINE_AUTO_RETURN,
        eNABLE_LVB_GRID_WORLDWIDE,
        -- * Console code pages

        getConsoleCP,
        setConsoleCP,
        getConsoleOutputCP,
        setConsoleOutputCP,
        -- * Ctrl events

        CtrlEvent, cTRL_C_EVENT, cTRL_BREAK_EVENT,
        generateConsoleCtrlEvent,
        -- * Command line

        commandLineToArgv,
        -- * Screen buffer

        CONSOLE_SCREEN_BUFFER_INFO(..),
        COORD(..),
        SMALL_RECT(..),
        getConsoleScreenBufferInfo,
        getCurrentConsoleScreenBufferInfo
  ) where



#include "windows_cconv.h"

import System.Win32.Types
import Graphics.Win32.Misc

import Foreign.C.Types (CInt(..))
import Foreign.C.String (withCWString, CWString)
import Foreign.Ptr (Ptr)
import Foreign.Storable (Storable(..))
import Foreign.Marshal.Array (peekArray)
import Foreign.Marshal.Alloc (alloca)

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

getConsoleMode :: HANDLE -> IO DWORD
getConsoleMode h = alloca $ \ptr -> do
    failIfFalse_ "GetConsoleMode" $ c_GetConsoleMode h ptr
    peek ptr

setConsoleMode :: HANDLE -> DWORD -> IO ()
setConsoleMode h mode = failIfFalse_ "SetConsoleMode" $ c_SetConsoleMode h mode

eNABLE_ECHO_INPUT, eNABLE_EXTENDED_FLAGS, eNABLE_INSERT_MODE, eNABLE_LINE_INPUT,
    eNABLE_MOUSE_INPUT, eNABLE_PROCESSED_INPUT, eNABLE_QUICK_EDIT_MODE,
    eNABLE_WINDOW_INPUT, eNABLE_VIRTUAL_TERMINAL_INPUT, eNABLE_PROCESSED_OUTPUT,
    eNABLE_WRAP_AT_EOL_OUTPUT, eNABLE_VIRTUAL_TERMINAL_PROCESSING,
    dISABLE_NEWLINE_AUTO_RETURN, eNABLE_LVB_GRID_WORLDWIDE :: DWORD
eNABLE_ECHO_INPUT = 4
eNABLE_EXTENDED_FLAGS = 128
eNABLE_INSERT_MODE = 32
eNABLE_LINE_INPUT = 2
eNABLE_MOUSE_INPUT = 16
eNABLE_PROCESSED_INPUT = 1
eNABLE_QUICK_EDIT_MODE = 64
eNABLE_WINDOW_INPUT = 8
eNABLE_VIRTUAL_TERMINAL_INPUT = 512
eNABLE_PROCESSED_OUTPUT = 1
eNABLE_WRAP_AT_EOL_OUTPUT = 2
eNABLE_VIRTUAL_TERMINAL_PROCESSING = 4
dISABLE_NEWLINE_AUTO_RETURN = 8
eNABLE_LVB_GRID_WORLDWIDE = 16

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 121 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}

generateConsoleCtrlEvent :: CtrlEvent -> DWORD -> IO ()
generateConsoleCtrlEvent e p
    = failIfFalse_
        "generateConsoleCtrlEvent"
        $ c_GenerateConsoleCtrlEvent e p

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)

-- | This function can be used to parse commandline arguments and return

--   the split up arguments as elements in a list.

commandLineToArgv :: String -> IO [String]
commandLineToArgv []  = return []
commandLineToArgv arg =
  do withCWString arg $ \c_arg -> do
       alloca $ \c_size -> do
         res <- c_CommandLineToArgvW c_arg c_size
         size <- peek c_size
         args <- peekArray (fromIntegral size) res
         _ <- localFree res
         mapM peekTString args

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)
{-# LINE 157 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
    alignment _ = 2
{-# LINE 158 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
    peek buf = do
        dwSize'              <- ((\hsc_ptr -> peekByteOff hsc_ptr 0)) buf
{-# LINE 160 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        dwCursorPosition'    <- ((\hsc_ptr -> peekByteOff hsc_ptr 4)) buf
{-# LINE 161 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        wAttributes'         <- ((\hsc_ptr -> peekByteOff hsc_ptr 8)) buf
{-# LINE 162 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        srWindow'            <- ((\hsc_ptr -> peekByteOff hsc_ptr 10)) buf
{-# LINE 163 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        dwMaximumWindowSize' <- ((\hsc_ptr -> peekByteOff hsc_ptr 18)) buf
{-# LINE 164 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        return $ CONSOLE_SCREEN_BUFFER_INFO dwSize' dwCursorPosition' wAttributes' srWindow' dwMaximumWindowSize'
    poke buf info = do
        ((\hsc_ptr -> pokeByteOff hsc_ptr 0)) buf (dwSize info)
{-# LINE 167 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 4)) buf (dwCursorPosition info)
{-# LINE 168 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 8)) buf (wAttributes info)
{-# LINE 169 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 10)) buf (srWindow info)
{-# LINE 170 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 18)) buf (dwMaximumWindowSize info)
{-# LINE 171 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}

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

instance Storable COORD where
    sizeOf = const (4)
{-# LINE 179 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
    alignment _ = 2
{-# LINE 180 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
    peek buf = do
        x' <- ((\hsc_ptr -> peekByteOff hsc_ptr 0)) buf
{-# LINE 182 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        y' <- ((\hsc_ptr -> peekByteOff hsc_ptr 2)) buf
{-# LINE 183 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        return $ COORD x' y'
    poke buf coord = do
        ((\hsc_ptr -> pokeByteOff hsc_ptr 0)) buf (xPos coord)
{-# LINE 186 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 2)) buf (yPos coord)
{-# LINE 187 "libraries\\Win32\\System\\Win32\\Console.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 197 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
    alignment _ = 2
{-# LINE 198 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
    peek buf = do
        left'   <- ((\hsc_ptr -> peekByteOff hsc_ptr 0)) buf
{-# LINE 200 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        top'    <- ((\hsc_ptr -> peekByteOff hsc_ptr 2)) buf
{-# LINE 201 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        right'  <- ((\hsc_ptr -> peekByteOff hsc_ptr 4)) buf
{-# LINE 202 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        bottom' <- ((\hsc_ptr -> peekByteOff hsc_ptr 6)) buf
{-# LINE 203 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        return $ SMALL_RECT left' top' right' bottom'
    poke buf small_rect = do
        ((\hsc_ptr -> pokeByteOff hsc_ptr 0)) buf (leftPos small_rect)
{-# LINE 206 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 2)) buf (topPos small_rect)
{-# LINE 207 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 4)) buf (rightPos small_rect)
{-# LINE 208 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}
        ((\hsc_ptr -> pokeByteOff hsc_ptr 6)) buf (bottomPos small_rect)
{-# LINE 209 "libraries\\Win32\\System\\Win32\\Console.hsc" #-}

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

getConsoleScreenBufferInfo :: HANDLE -> IO CONSOLE_SCREEN_BUFFER_INFO
getConsoleScreenBufferInfo h = alloca $ \ptr -> do
    failIfFalse_ "GetConsoleScreenBufferInfo" $ c_GetConsoleScreenBufferInfo h ptr
    peek ptr

getCurrentConsoleScreenBufferInfo :: IO CONSOLE_SCREEN_BUFFER_INFO
getCurrentConsoleScreenBufferInfo = do
    h <- failIf (== nullHANDLE) "getStdHandle" $ getStdHandle sTD_OUTPUT_HANDLE
    getConsoleScreenBufferInfo h