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{-|
Module : System.IO.Terminal.Characters
Copyright : (c) UU, 2019
License : MIT
Maintainer : Tom Smeding
Stability : experimental
Portability : POSIX, macOS, Windows
Access to a small database of box-drawing characters.
-}
module System.IO.Terminal.Characters
(boxChar, BoxChar, BoxWeight(..))
where
import qualified Data.Map.Strict as Map
-- | Description of a box-drawing character: (up, right, down, left)
type BoxChar = (BoxWeight, BoxWeight, BoxWeight, BoxWeight)
-- | Description of one arm of a box-drawing character.
data BoxWeight = BoxNone | BoxSingle | BoxHeavy | BoxDouble
deriving (Eq, Ord, Show)
-- | Look up a box drawing character in the unicode table. Note that not
-- all combinations are valid; currently, the function throws an error if
-- the character doesn't exist.
boxChar :: BoxChar -> Char
boxChar tup = mapping Map.! tup
where
mapping = Map.fromList
[((BoxNone, BoxNone, BoxNone, BoxSingle), '╴')
,((BoxNone, BoxNone, BoxNone, BoxHeavy), '╸')
,((BoxSingle, BoxNone, BoxNone, BoxNone), '╵')
,((BoxHeavy, BoxNone, BoxNone, BoxNone), '╹')
,((BoxNone, BoxSingle, BoxNone, BoxNone), '╶')
,((BoxNone, BoxHeavy, BoxNone, BoxNone), '╺')
,((BoxNone, BoxNone, BoxSingle, BoxNone), '╷')
,((BoxNone, BoxNone, BoxHeavy, BoxNone), '╻')
,((BoxNone, BoxSingle, BoxNone, BoxSingle), '─')
,((BoxNone, BoxHeavy, BoxNone, BoxHeavy), '━')
,((BoxNone, BoxHeavy, BoxNone, BoxSingle), '╼')
,((BoxNone, BoxSingle, BoxNone, BoxHeavy), '╾')
,((BoxSingle, BoxNone, BoxSingle, BoxNone), '│')
,((BoxHeavy, BoxNone, BoxHeavy, BoxNone), '┃')
,((BoxSingle, BoxNone, BoxHeavy, BoxNone), '╽')
,((BoxHeavy, BoxNone, BoxSingle, BoxNone), '╿')
,((BoxNone, BoxSingle, BoxSingle, BoxNone), '┌')
,((BoxNone, BoxHeavy, BoxSingle, BoxNone), '┍')
,((BoxNone, BoxSingle, BoxHeavy, BoxNone), '┎')
,((BoxNone, BoxHeavy, BoxHeavy, BoxNone), '┏')
,((BoxNone, BoxNone, BoxSingle, BoxSingle), '┐')
,((BoxNone, BoxNone, BoxSingle, BoxHeavy), '┑')
,((BoxNone, BoxNone, BoxHeavy, BoxSingle), '┒')
,((BoxNone, BoxNone, BoxHeavy, BoxHeavy), '┓')
,((BoxSingle, BoxSingle, BoxNone, BoxNone), '└')
,((BoxSingle, BoxHeavy, BoxNone, BoxNone), '┕')
,((BoxHeavy, BoxSingle, BoxNone, BoxNone), '┖')
,((BoxHeavy, BoxHeavy, BoxNone, BoxNone), '┗')
,((BoxSingle, BoxNone, BoxNone, BoxSingle), '┘')
,((BoxSingle, BoxNone, BoxNone, BoxHeavy), '┙')
,((BoxHeavy, BoxNone, BoxNone, BoxSingle), '┚')
,((BoxHeavy, BoxNone, BoxNone, BoxHeavy), '┛')
,((BoxSingle, BoxSingle, BoxSingle, BoxNone), '├')
,((BoxSingle, BoxHeavy, BoxSingle, BoxNone), '┝')
,((BoxHeavy, BoxSingle, BoxSingle, BoxNone), '┞')
,((BoxSingle, BoxSingle, BoxHeavy, BoxNone), '┟')
,((BoxHeavy, BoxSingle, BoxHeavy, BoxNone), '┠')
,((BoxHeavy, BoxHeavy, BoxSingle, BoxNone), '┡')
,((BoxSingle, BoxHeavy, BoxHeavy, BoxNone), '┢')
,((BoxHeavy, BoxHeavy, BoxHeavy, BoxNone), '┣')
,((BoxSingle, BoxNone, BoxSingle, BoxSingle), '┤')
,((BoxSingle, BoxNone, BoxSingle, BoxHeavy), '┥')
,((BoxHeavy, BoxNone, BoxSingle, BoxSingle), '┦')
,((BoxSingle, BoxNone, BoxHeavy, BoxSingle), '┧')
,((BoxHeavy, BoxNone, BoxHeavy, BoxSingle), '┨')
,((BoxHeavy, BoxNone, BoxSingle, BoxHeavy), '┩')
,((BoxSingle, BoxNone, BoxHeavy, BoxHeavy), '┪')
,((BoxHeavy, BoxNone, BoxHeavy, BoxHeavy), '┫')
,((BoxNone, BoxSingle, BoxSingle, BoxSingle), '┬')
,((BoxNone, BoxSingle, BoxSingle, BoxHeavy), '┭')
,((BoxNone, BoxHeavy, BoxSingle, BoxSingle), '┮')
,((BoxNone, BoxHeavy, BoxSingle, BoxHeavy), '┯')
,((BoxNone, BoxSingle, BoxHeavy, BoxSingle), '┰')
,((BoxNone, BoxSingle, BoxHeavy, BoxHeavy), '┱')
,((BoxNone, BoxHeavy, BoxHeavy, BoxSingle), '┲')
,((BoxNone, BoxHeavy, BoxHeavy, BoxHeavy), '┳')
,((BoxSingle, BoxSingle, BoxNone, BoxSingle), '┴')
,((BoxSingle, BoxSingle, BoxNone, BoxHeavy), '┵')
,((BoxSingle, BoxHeavy, BoxNone, BoxSingle), '┶')
,((BoxSingle, BoxHeavy, BoxNone, BoxHeavy), '┷')
,((BoxHeavy, BoxSingle, BoxNone, BoxSingle), '┸')
,((BoxHeavy, BoxSingle, BoxNone, BoxHeavy), '┹')
,((BoxHeavy, BoxHeavy, BoxNone, BoxSingle), '┺')
,((BoxHeavy, BoxHeavy, BoxNone, BoxHeavy), '┻')
,((BoxSingle, BoxSingle, BoxSingle, BoxSingle), '┼')
,((BoxSingle, BoxSingle, BoxSingle, BoxHeavy), '┽')
,((BoxSingle, BoxHeavy, BoxSingle, BoxSingle), '┾')
,((BoxSingle, BoxHeavy, BoxSingle, BoxHeavy), '┿')
,((BoxHeavy, BoxSingle, BoxSingle, BoxSingle), '╀')
,((BoxSingle, BoxSingle, BoxHeavy, BoxSingle), '╁')
,((BoxHeavy, BoxSingle, BoxHeavy, BoxSingle), '╂')
,((BoxHeavy, BoxSingle, BoxSingle, BoxHeavy), '╃')
,((BoxHeavy, BoxHeavy, BoxSingle, BoxSingle), '╄')
,((BoxSingle, BoxSingle, BoxHeavy, BoxHeavy), '╅')
,((BoxSingle, BoxHeavy, BoxHeavy, BoxSingle), '╆')
,((BoxHeavy, BoxHeavy, BoxSingle, BoxHeavy), '╇')
,((BoxSingle, BoxHeavy, BoxHeavy, BoxHeavy), '╈')
,((BoxHeavy, BoxSingle, BoxHeavy, BoxHeavy), '╉')
,((BoxHeavy, BoxHeavy, BoxHeavy, BoxSingle), '╊')
,((BoxHeavy, BoxHeavy, BoxHeavy, BoxHeavy), '╋')
,((BoxNone, BoxDouble, BoxNone, BoxDouble), '═')
,((BoxDouble, BoxNone, BoxDouble, BoxNone), '║')
,((BoxNone, BoxDouble, BoxSingle, BoxNone), '╒')
,((BoxNone, BoxSingle, BoxDouble, BoxNone), '╓')
,((BoxNone, BoxDouble, BoxDouble, BoxNone), '╔')
,((BoxNone, BoxNone, BoxSingle, BoxDouble), '╕')
,((BoxNone, BoxNone, BoxDouble, BoxSingle), '╖')
,((BoxNone, BoxNone, BoxDouble, BoxDouble), '╗')
,((BoxSingle, BoxDouble, BoxNone, BoxNone), '╘')
,((BoxDouble, BoxSingle, BoxNone, BoxNone), '╙')
,((BoxDouble, BoxDouble, BoxNone, BoxNone), '╚')
,((BoxSingle, BoxNone, BoxNone, BoxDouble), '╛')
,((BoxDouble, BoxNone, BoxNone, BoxSingle), '╜')
,((BoxDouble, BoxNone, BoxNone, BoxDouble), '╝')
,((BoxSingle, BoxDouble, BoxSingle, BoxNone), '╞')
,((BoxDouble, BoxSingle, BoxDouble, BoxNone), '╟')
,((BoxDouble, BoxDouble, BoxDouble, BoxNone), '╠')
,((BoxSingle, BoxNone, BoxSingle, BoxDouble), '╡')
,((BoxDouble, BoxNone, BoxDouble, BoxSingle), '╢')
,((BoxDouble, BoxNone, BoxDouble, BoxDouble), '╣')
,((BoxNone, BoxDouble, BoxSingle, BoxDouble), '╤')
,((BoxNone, BoxSingle, BoxDouble, BoxSingle), '╥')
,((BoxNone, BoxDouble, BoxDouble, BoxDouble), '╦')
,((BoxSingle, BoxDouble, BoxNone, BoxDouble), '╧')
,((BoxDouble, BoxSingle, BoxNone, BoxSingle), '╨')
,((BoxDouble, BoxDouble, BoxNone, BoxDouble), '╩')
,((BoxSingle, BoxDouble, BoxSingle, BoxDouble), '╪')
,((BoxDouble, BoxSingle, BoxDouble, BoxSingle), '╫')
,((BoxDouble, BoxDouble, BoxDouble, BoxDouble), '╬')]
|
