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authorGravatar Joey Hess <joey@kitenet.net>2013-05-12 19:19:28 -0400
committerGravatar Joey Hess <joey@kitenet.net>2013-05-12 19:19:28 -0400
commit1dd4574909b40ffdb77ae1338b353156d73983af (patch)
tree21a2d65e054964e91ba7376fcbca95b33f7f4472 /Utility/TempFile.hs
parentb8558b724b302a9db16e9b75ac2cba425ecdc5c1 (diff)
rename module
Diffstat (limited to 'Utility/TempFile.hs')
-rw-r--r--Utility/TempFile.hs71
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diff --git a/Utility/TempFile.hs b/Utility/TempFile.hs
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-{- temp file functions
- -
- - Copyright 2010-2013 Joey Hess <joey@kitenet.net>
- -
- - Licensed under the GNU GPL version 3 or higher.
- -}
-
-module Utility.TempFile where
-
-import Control.Exception (bracket)
-import System.IO
-import System.Directory
-import Control.Monad.IfElse
-
-import Utility.Exception
-import System.FilePath
-
-type Template = String
-
-{- Runs an action like writeFile, writing to a temp file first and
- - then moving it into place. The temp file is stored in the same
- - directory as the final file to avoid cross-device renames. -}
-viaTmp :: (FilePath -> String -> IO ()) -> FilePath -> String -> IO ()
-viaTmp a file content = do
- let (dir, base) = splitFileName file
- createDirectoryIfMissing True dir
- (tmpfile, handle) <- openTempFile dir (base ++ ".tmp")
- hClose handle
- a tmpfile content
- renameFile tmpfile file
-
-{- Runs an action with a tmp file located in the system's tmp directory
- - (or in "." if there is none) then removes the file. -}
-withTempFile :: Template -> (FilePath -> Handle -> IO a) -> IO a
-withTempFile template a = do
- tmpdir <- catchDefaultIO "." getTemporaryDirectory
- withTempFileIn tmpdir template a
-
-{- Runs an action with a tmp file located in the specified directory,
- - then removes the file. -}
-withTempFileIn :: FilePath -> Template -> (FilePath -> Handle -> IO a) -> IO a
-withTempFileIn tmpdir template a = bracket create remove use
- where
- create = openTempFile tmpdir template
- remove (name, handle) = do
- hClose handle
- catchBoolIO (removeFile name >> return True)
- use (name, handle) = a name handle
-
-{- Runs an action with a tmp directory located within the system's tmp
- - directory (or within "." if there is none), then removes the tmp
- - directory and all its contents. -}
-withTempDir :: Template -> (FilePath -> IO a) -> IO a
-withTempDir template a = do
- tmpdir <- catchDefaultIO "." getTemporaryDirectory
- withTempDirIn tmpdir template a
-
-{- Runs an action with a tmp directory located within a specified directory,
- - then removes the tmp directory and all its contents. -}
-withTempDirIn :: FilePath -> Template -> (FilePath -> IO a) -> IO a
-withTempDirIn tmpdir template = bracket create remove
- where
- remove d = whenM (doesDirectoryExist d) $
- removeDirectoryRecursive d
- create = do
- createDirectoryIfMissing True tmpdir
- makenewdir (tmpdir </> template) (0 :: Int)
- makenewdir t n = do
- let dir = t ++ "." ++ show n
- either (const $ makenewdir t $ n + 1) (const $ return dir)
- =<< tryIO (createDirectory dir)