Extra-1.30: A grab bag of modules. Source code Contents Index

Extra.Misc

Contents List functions String functions Tuple functions FilePath functions Map and Set functions Either functions System.IO functions System.Posix Processes

Synopsis

columns :: [[String]] -> [[String]] justify :: String -> Int -> [[String]] mapSnd :: (b -> c) -> (a, b) -> (a, c) parentPath :: FilePath -> FilePath canon :: FilePath -> FilePath listMap :: Ord k => [(k, a)] -> Map k [a] listDiff :: Ord a => [a] -> [a] -> [a] checkSuperUser :: IO Bool md5sum :: FilePath -> IO (Either String String) sameInode :: FilePath -> FilePath -> IO Bool sameMd5sum :: FilePath -> FilePath -> IO Bool tarDir :: FilePath -> IO (Maybe String) processOutput :: String -> IO (Either Int String) processOutput2 :: String -> IO (String, ExitCode) splitOutput :: [Output] -> (ByteString, ByteString, Maybe ExitCode) cd :: FilePath -> IO a -> IO a read' :: Read a => String -> a

List functions

String functions

columns :: [[String]] -> [[String]] Source

Pad strings so the columns line up. The argument and return value elements are the rows of a table. Do not pad the rightmost column.

justify :: String -> Int -> [[String]] Source

Group words into lines of length n or less.

Tuple functions

mapSnd :: (b -> c) -> (a, b) -> (a, c) Source

FilePath functions

parentPath :: FilePath -> FilePath Source

dirname

canon :: FilePath -> FilePath Source

Weak attempt at canonicalizing a file path.

Map and Set functions

listMap :: Ord k => [(k, a)] -> Map k [a] Source

Turn a list of (k, a) pairs into a map from k -> [a]. The order of the elements in the a list is preserved.

listDiff :: Ord a => [a] -> [a] -> [a] Source

Either functions

System.IO functions

System.Posix

checkSuperUser :: IO Bool Source

A version of read with a more helpful error message.

md5sum :: FilePath -> IO (Either String String) Source

Run md5sum on a file and return the resulting checksum as text.

sameInode :: FilePath -> FilePath -> IO Bool Source

Predicate to decide if two files have the same inode.

sameMd5sum :: FilePath -> FilePath -> IO Bool Source

Predicate to decide if two files have the same md5 checksum.

tarDir :: FilePath -> IO (Maybe String) Source

Given a tarball, return the name of the top directory.

Processes

processOutput :: String -> IO (Either Int String) Source

Backwards compatibility functions.

processOutput2 :: String -> IO (String, ExitCode) Source

splitOutput :: [Output] -> (ByteString, ByteString, Maybe ExitCode) Source

cd :: FilePath -> IO a -> IO a Source

read' :: Read a => String -> a Source

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