Modulefs-api-0.4.0.0Haskell2010

System.FS.IO.Handle

This module is mainly meant to be used for the IO implementation of HasFS.

1 type
4 values

Packagefs-api-0.4.0.0
Exports5
LanguageHaskell2010
LicenceApache-2.0
SourceHandle.hs

datadata HandleOS osHandle

File handlers for the IO instance for HasFS. This is parametric on the os.

The FilePath is used to improve error messages. The MVar is used to implement close. osHandle is Fd for unix and HANDLE for Windows.

Constructors

HandleOS
- filePath :: FilePath
- handle :: MVar (Maybe osHandle)

Instances2Eq, Show

Eq (HandleOS a)Defined in fs-api-0.4.0.0 · System.FS.IO.Handle
Show (HandleOS a)Defined in fs-api-0.4.0.0 · System.FS.IO.Handle

valuecloseHandleOS :: HandleOS osHandle -> (osHandle -> IO ()) -> IO ()

This is a no-op when the handle is already closed.

valueisHandleClosedException :: IOException -> Bool

valueisOpenHandleOS :: HandleOS osHandle -> IO Bool

valuewithOpenHandle :: String -> HandleOS osHandle -> (osHandle -> IO a) -> IO a

This is meant to be used for the implementation of individual file system commands. Using it for larger scopes woud not be correct, since we would not notice if the handle is closed.