module Java.ClassPath.Common where
import Data.List
import Data.String.Utils (split)
import System.FilePath
import Java.ClassPath.Types
mapF :: (t -> a) -> [Tree t] -> [Tree a]
mapF fn forest = map (mapT fn) forest
mapFM :: (Monad m, Functor m) => (t -> m a) -> [Tree t] -> m [Tree a]
mapFM fn forest = mapM (mapTM fn) forest
mapTM :: (Monad m, Functor m) => (t -> m a) -> Tree t -> m (Tree a)
mapTM fn (Directory dir forest) = Directory dir `fmap` mapFM fn forest
mapTM fn (File a) = File `fmap` fn a
mapFMF :: (Monad m, Functor m) => (FilePath -> t -> m a) -> [Tree t] -> m [Tree a]
mapFMF fn forest = mapM (mapTMF fn) forest
mapTMF :: (Monad m, Functor m) => (FilePath -> t -> m a) -> Tree t -> m (Tree a)
mapTMF fn t = go "" t
where
go path (Directory dir forest) = Directory dir `fmap` mapM (go $ path </> dir) forest
go path (File a) = File `fmap` fn path a
mapT :: (t -> a) -> Tree t -> Tree a
mapT fn (Directory dir forest) = Directory dir (mapF fn forest)
mapT fn (File a) = File (fn a)
buildTree :: [FilePath] -> [Tree FilePath]
buildTree strs =
let build :: [[String]] -> [Tree FilePath]
build [[name]] = [File name]
build ss = map node $ groupBy eq (sort ss)
node [] = error "Impossible: groupBy give an empty group!"
node ([]:l) = node l
node l | all (null . tail) l = File (head $ head l)
| otherwise = Directory (head $ head l) (build $ map tail l)
ls = map (split "/") strs
eq [] [] = True
eq (x:_) (y:_) = x == y
in build ls
merge :: [Tree CPEntry] -> [Tree CPEntry]
merge [] = []
merge [t1,t2] = merge1 [t1] t2
merge (t:ts) = foldl merge1 [t] ts
merge1 :: [Tree CPEntry] -> Tree CPEntry -> [Tree CPEntry]
merge1 [] x = [x]
merge1 (x@(File e): es) y@(File e') | e == e' = x: es
| otherwise = x: merge1 es y
merge1 (d@(Directory _ _):es) f@(File _) = d: merge1 es f
merge1 (f@(File _):es) d@(Directory _ _) = f: merge1 es d
merge1 (x@(Directory dir f):es) y@(Directory dir' f')
| dir == dir' = Directory dir (merge $ f ++ f'): es
| otherwise = x: merge1 es y