column en haskell, mon cerveau est malade

haskell/column.hs

@@ -0,0 +1,38 @@
+import qualified Data.Text as T
+
+splitOn :: String -> String -> [String]
+splitOn x y = map T.unpack $ T.splitOn (T.pack x) $ T.pack y
+
+transpose:: [[a]] -> [[a]]
+transpose ([]:xs) = []
+transpose x = (map head x) : transpose (map tail x)
+
+addEmpty :: Int -> [a] -> [a] -> [a]
+addEmpty x v y
+        | ysize == x+1 = y
+        | ysize <= x  = addEmpty x v (y ++ v)
+        | otherwise  = []
+        where ysize = length y
+
+formatLine :: [String] -> [String]
+formatLine x =  map (addEmpty nb " ") x
+                where nb = maximum $ map length x
+
+formatLines :: [[String]] -> [[String]]
+formatLines x = map formatLine x
+
+completeMatrix :: [[String]] -> [[String]]
+completeMatrix m = map (addEmpty nb [""]) m
+                   where nb = maximum $ map length m
+
+column :: [[String]] -> [[String]]
+column x = transpose $ formatLines $ transpose $ completeMatrix x
+
+putToLines :: [[String]] -> [String]
+putToLines x = map (foldr (++) " ") x
+
+main = do
+    content <- getContents
+    -- print $ column $ map (splitOn " ") $ lines content
+    -- print $ putToLines $ column $ map (splitOn " ") $ lines content
+    putStr $ unlines . putToLines $ column $ map (splitOn " ") $ lines content