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-rw-r--r--ListPath.hs72
1 files changed, 0 insertions, 72 deletions
diff --git a/ListPath.hs b/ListPath.hs
deleted file mode 100644
index ca72e87..0000000
--- a/ListPath.hs
+++ /dev/null
@@ -1,72 +0,0 @@
-{-
- - Copyright 2015 Egor Tensin <Egor.Tensin@gmail.com>
- - This file is licensed under the terms of the MIT License.
- - See LICENSE.txt for details.
--}
-
-module Main ( main ) where
-
-import System.Console.GetOpt
-import System.Directory ( doesDirectoryExist )
-import System.Environment ( getArgs, getProgName )
-import System.Exit ( exitFailure, exitSuccess )
-import System.IO ( hPutStr, stderr )
-
-import qualified EnvUtils
-
-main :: IO ()
-main = do
- rawArgs <- getArgs
- case getOpt Permute optionDescription rawArgs of
- (actions, args, []) -> do
- options <- foldl (>>=) (return defaultOptions) actions
- case args of
- [] -> listPath options
- _ -> invalidNumberOfArguments
- (_, _, errorMessages) -> exitWithUsageErrors errorMessages
-
-listPath :: Options -> IO ()
-listPath options = do
- val <- EnvUtils.getEnv $ name options
- mapM_ printPath $ EnvUtils.splitPaths val
- where
- printPath p = do
- exists <- doesDirectoryExist p
- putStrLn $ (if exists then "+" else "-") ++ " " ++ p
-
-data Options = Options { name :: String } deriving (Eq, Show)
-
-defaultOptions :: Options
-defaultOptions = Options { name = "PATH" }
-
-buildHelpMessage :: IO String
-buildHelpMessage = do
- header <- buildHeader
- return $ usageInfo header optionDescription
- where
- buildHeader :: IO String
- buildHeader = do
- progName <- getProgName
- return $ "Usage: " ++ progName ++ " [OPTIONS...]\nOptions:"
-
-exitWithHelpMessage :: a -> IO b
-exitWithHelpMessage _ = do
- helpMessage <- buildHelpMessage
- putStr helpMessage
- exitSuccess
-
-exitWithUsageErrors :: [String] -> IO a
-exitWithUsageErrors errorMessages = do
- hPutStr stderr $ concatMap ("Usage error: " ++) errorMessages
- helpMessage <- buildHelpMessage
- hPutStr stderr helpMessage
- exitFailure
-
-invalidNumberOfArguments :: IO a
-invalidNumberOfArguments = exitWithUsageErrors ["invalid number of arguments\n"]
-
-optionDescription :: [OptDescr (Options -> IO Options)]
-optionDescription = [
- Option "n" ["name"] (ReqArg (\s opts -> return opts { name = s }) "NAME") "set the variable name ('PATH' by default)",
- Option "h" ["help"] (NoArg exitWithHelpMessage) "show this message and exit"
- ]