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haskell script to recursively save directory names to file
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{-# LANGUAGE OverloadedStrings #-} | |
import Data.ByteString as B hiding (filter) | |
import Data.Set (fromList, member) | |
import Data.Text as T hiding (filter) | |
import Data.Text.Encoding | |
import System.Directory | |
import System.FilePath.Windows | |
-- work around encoding problems | |
main = recursiveDirectoryNames "." | |
recursiveDirectoryNames source = listDirectory source >>= action | |
where | |
action [] = return () | |
action target = | |
mapM_ | |
( B.appendFile "results.txt". encodeUtf8. T.pack. (++ linebreak)) | |
(directories target) | |
>> mapM_ | |
(recursiveDirectoryNames . (source </>)) (directories target) | |
linebreak = "\r\n" | |
directories = filter $ \entry -> not (hasExtension || (entry `member` exceptions)) | |
exceptions = fromList ["LICENSE"] |
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