pathwalk (empty) → 0.1.0.0

raw patch · 4 files changed

+177/−0 lines, 4 filesdep +basedep +directorydep +filepathsetup-changed

Dependencies added: base, directory, filepath

Files

• LICENSE +121/−0
• Setup.hs +2/−0
• pathwalk.cabal +21/−0
• src/Within/PathWalk.hs +33/−0

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@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,21 @@+name:                pathwalk+version:             0.1.0.0+synopsis:            Path walking utilities for Haskell programs+description:         Simple directory tree walking utilities.+license:             PublicDomain+license-file:        LICENSE+author:              Christine Dodrill+maintainer:          xena@yolo-swag.com+category:            System+build-type:          Simple+cabal-version:       >=1.10++source-repository head+    type: git+    location: https://github.com/Xe/pathwalk++library+  exposed-modules:     Within.PathWalk+  build-depends:       base >=4.6 && <4.7, directory >=1.2 && <1.3, filepath >=1.3 && <1.4+  hs-source-dirs:      src+  default-language:    Haskell2010

@@ -0,0 +1,33 @@+module Within.PathWalk where++import Control.Monad (forM_)+import Data.IORef (newIORef, readIORef, writeIORef)+import System.Directory (doesDirectoryExist, getDirectoryContents)+import System.FilePath ((</>))++pathWalk :: FilePath -> (FilePath -> [FilePath] -> [FilePath] -> IO ()) -> IO ()+pathWalk root callback = do+    dirs  <- newIORef ([] :: [FilePath])+    files <- newIORef ([] :: [FilePath])+    names <- getDirectoryContents root+    let properNames = filter (`notElem` [".", ".."]) names++    forM_ properNames $ \name -> do+        isDir <- doesDirectoryExist $ root </> name++        case isDir of+            True -> do+                val <- readIORef dirs+                writeIORef dirs $ val ++ [name]+            False -> do+                val <- readIORef files+                writeIORef files $ val ++ [name]++    cbDirs  <- readIORef dirs+    cbFiles <- readIORef files++    callback root cbDirs cbFiles++    forM_ cbDirs $ \dir -> do+        let newPath = root </> dir+        pathWalk newPath callback