| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell98 |
System.IO.Temp
- withSystemTempFile :: (MonadIO m, MonadMask m) => String -> (FilePath -> Handle -> m a) -> m a
- withSystemTempDirectory :: (MonadIO m, MonadMask m) => String -> (FilePath -> m a) -> m a
- withTempFile :: (MonadIO m, MonadMask m) => FilePath -> String -> (FilePath -> Handle -> m a) -> m a
- withTempDirectory :: (MonadMask m, MonadIO m) => FilePath -> String -> (FilePath -> m a) -> m a
- openTempFile :: FilePath -> String -> IO (FilePath, Handle)
- openBinaryTempFile :: FilePath -> String -> IO (FilePath, Handle)
- openNewBinaryFile :: FilePath -> String -> IO (FilePath, Handle)
- createTempDirectory :: FilePath -> String -> IO FilePath
Documentation
Arguments
| :: (MonadIO m, MonadMask m) | |
| => String | File name template. See |
| -> (FilePath -> Handle -> m a) | Callback that can use the file |
| -> m a |
Create and use a temporary directory in the system standard temporary directory.
Behaves exactly the same as withTempFile, except that the parent temporary directory
will be that returned by getTemporaryDirectory.
withSystemTempDirectory Source
Arguments
| :: (MonadIO m, MonadMask m) | |
| => String | Directory name template. See |
| -> (FilePath -> m a) | Callback that can use the directory |
| -> m a |
Create and use a temporary directory in the system standard temporary directory.
Behaves exactly the same as withTempDirectory, except that the parent temporary directory
will be that returned by getTemporaryDirectory.
Arguments
| :: (MonadIO m, MonadMask m) | |
| => FilePath | Temp dir to create the file in |
| -> String | File name template. See |
| -> (FilePath -> Handle -> m a) | Callback that can use the file |
| -> m a |
Use a temporary filename that doesn't already exist.
Creates a new temporary file inside the given directory, making use of the template. The temp file is deleted after use. For example:
withTempFile "src" "sdist." $ \tmpFile hFile -> do ...
The tmpFlie will be file in the given directory, e.g.
src/sdist.342.
Arguments
| :: (MonadMask m, MonadIO m) | |
| => FilePath | Temp directory to create the directory in |
| -> String | Directory name template. See |
| -> (FilePath -> m a) | Callback that can use the directory |
| -> m a |
Create and use a temporary directory.
Creates a new temporary directory inside the given directory, making use of the template. The temp directory is deleted after use. For example:
withTempDirectory "src" "sdist." $ \tmpDir -> do ...
The tmpDir will be a new subdirectory of the given directory, e.g.
src/sdist.342.
Arguments
| :: FilePath | Directory in which to create the file |
| -> String | File name template. If the template is "foo.ext" then the created file will be "fooXXX.ext" where XXX is some random number. |
| -> IO (FilePath, Handle) |
The function creates a temporary file in ReadWrite mode. The created file isn't deleted automatically, so you need to delete it manually.
The file is creates with permissions such that only the current user can read/write it.
With some exceptions (see below), the file will be created securely
in the sense that an attacker should not be able to cause
openTempFile to overwrite another file on the filesystem using your
credentials, by putting symbolic links (on Unix) in the place where
the temporary file is to be created. On Unix the O_CREAT and
O_EXCL flags are used to prevent this attack, but note that
O_EXCL is sometimes not supported on NFS filesystems, so if you
rely on this behaviour it is best to use local filesystems only.
openBinaryTempFile :: FilePath -> String -> IO (FilePath, Handle)
Like openTempFile, but opens the file in binary mode. See openBinaryFile for more comments.