1 files changed, 161 insertions, 0 deletions
diff --git a/lib/Shupai.hs b/lib/Shupai.hs
new file mode 100644
index 0000000..b92b950
--- /dev/null
+++ b/lib/Shupai.hs
@@ -0,0 +1,161 @@
+module Shupai 
+  ( shupai
+  )
+where
+
+import Data.Bits ((.&.), complement)
+import Data.Char (ord)
+import qualified Data.Map as Map
+import Data.Function ((&))
+import qualified Data.Maybe as Maybe
+import Data.List.Split (chunksOf)
+import Data.List (transpose)
+
+
+isWideChar :: Char -> Bool
+isWideChar c = inRange $ ord c where
+  inRange x
+    | x >= 0x1100 && x <= 0x115f = True
+    | x >= 0x115f && x <= 0xa4cf && x /= 0x303f
+        && (x .&. complement 0x0011) /= 0x300a = True
+    | x >= 0xac00 && x <= 0xd7a3 = True
+    | x >= 0xf900 && x <= 0xfaff = True
+    | x >= 0xfe30 && x <= 0xfe6f = True
+    | x >= 0xff00 && x <= 0xff5f = True
+    | x >= 0xffe0 && x <= 0xffe6 = True
+    | x >= 0x20000 && x <= 0x2ffff = True
+    | otherwise = False
+
+textPreprocess :: String -> String
+textPreprocess s = s & filter isValid & map toFullWidth where
+  isValid c = isWideChar c || Map.member c fullWidthMap
+  toFullWidth c = Maybe.fromMaybe c $ Map.lookup c fullWidthMap
+
+verticalFormat :: String -> String
+verticalFormat s 
+  | length s < 25 = verticalCompose $ chunksOf 5 s
+  | otherwise = verticalCompose $ chunksOf (length s `div` 5 + 1) s
+
+verticalCompose :: [String] -> String
+verticalCompose lst = lst
+  & fillSpace
+  & transpose
+  & map (addSpace . reverse)
+  & unlines
+
+addSpace :: String -> String
+addSpace [] = []
+addSpace [x] = [x]
+addSpace (x:xs) = x : ' ' : addSpace xs
+
+fillSpace :: [String] -> [String]
+fillSpace [] = []
+fillSpace [x] = [x]
+fillSpace ls = go ls $ length (head ls) where
+  go :: [String] -> Int -> [String]
+  go [] _ = []
+  go [x] len = [x ++ replicate (len - length x) 'ㅤ']
+  go (x:xs) len = x : go xs len
+    
+
+shupai :: String -> String
+shupai = verticalFormat . textPreprocess
+
+fullWidthMap :: Map.Map Char Char
+fullWidthMap = Map.fromList
+  [ ('!', '！')
+  , ('"', '＂')
+  , ('#', '＃')
+  , ('$', '＄')
+  , ('%', '％')
+  , ('&', '＆')
+  , ('\'', '＇')
+  , ('(', '（')
+  , (')', '）')
+  , ('*', '＊')
+  , ('+', '＋')
+  , (',', '，')
+  , ('-', '－')
+  , ('.', '．')
+  , ('/', '／')
+  , ('0', '０')
+  , ('1', '１')
+  , ('2', '２')
+  , ('3', '３')
+  , ('4', '４')
+  , ('5', '５')
+  , ('6', '６')
+  , ('7', '７')
+  , ('8', '８')
+  , ('9', '９')
+  , (':', '：')
+  , (';', '；')
+  , ('<', '＜')
+  , ('=', '＝')
+  , ('>', '＞')
+  , ('?', '？')
+  , ('@', '＠')
+  , ('A', 'Ａ')
+  , ('B', 'Ｂ')
+  , ('C', 'Ｃ')
+  , ('D', 'Ｄ')
+  , ('E', 'Ｅ')
+  , ('F', 'Ｆ')
+  , ('G', 'Ｇ')
+  , ('H', 'Ｈ')
+  , ('I', 'Ｉ')
+  , ('J', 'Ｊ')
+  , ('K', 'Ｋ')
+  , ('L', 'Ｌ')
+  , ('M', 'Ｍ')
+  , ('N', 'Ｎ')
+  , ('O', 'Ｏ')
+  , ('P', 'Ｐ')
+  , ('Q', 'Ｑ')
+  , ('R', 'Ｒ')
+  , ('S', 'Ｓ')
+  , ('T', 'Ｔ')
+  , ('U', 'Ｕ')
+  , ('V', 'Ｖ')
+  , ('W', 'Ｗ')
+  , ('X', 'Ｘ')
+  , ('Y', 'Ｙ')
+  , ('Z', 'Ｚ')
+  , ('[', '［')
+  , ('\\', '＼')
+  , (']', '］')
+  , ('^', '＾')
+  , ('_', '＿')
+  , ('`', '｀')
+  , ('a', 'ａ')
+  , ('b', 'ｂ')
+  , ('c', 'ｃ')
+  , ('d', 'ｄ')
+  , ('e', 'ｅ')
+  , ('f', 'ｆ')
+  , ('g', 'ｇ')
+  , ('h', 'ｈ')
+  , ('i', 'ｉ')
+  , ('j', 'ｊ')
+  , ('k', 'ｋ')
+  , ('l', 'ｌ')
+  , ('m', 'ｍ')
+  , ('n', 'ｎ')
+  , ('o', 'ｏ')
+  , ('p', 'ｐ')
+  , ('q', 'ｑ')
+  , ('r', 'ｒ')
+  , ('s', 'ｓ')
+  , ('t', 'ｔ')
+  , ('u', 'ｕ')
+  , ('v', 'ｖ')
+  , ('w', 'ｗ')
+  , ('x', 'ｘ')
+  , ('y', 'ｙ')
+  , ('z', 'ｚ')
+  , ('{', '｛')
+  , ('|', '｜')
+  , ('}', '｝')
+  , ('~', '～')
+  , (' ', 'ㅤ')
+  ]