e213ef310f
* Fix minor FD leak in journal code. Closes: #754608 * direct: Fix handling of case where a work tree subdirectory cannot be written to due to permissions. * migrate: Avoid re-checksumming when migrating from hashE to hash backend. * uninit: Avoid failing final removal in some direct mode repositories due to file modes. * S3: Deal with AWS ACL configurations that do not allow creating or checking the location of a bucket, but only reading and writing content to it. * resolvemerge: New plumbing command that runs the automatic merge conflict resolver. * Deal with change in git 2.0 that made indirect mode merge conflict resolution leave behind old files. * sync: Fix git sync with local git remotes even when they don't have an annex.uuid set. (The assistant already did so.) * Set gcrypt-publish-participants when setting up a gcrypt repository, to avoid unncessary passphrase prompts. This is a security/usability tradeoff. To avoid exposing the gpg key ids who can decrypt the repository, users can unset gcrypt-publish-participants. * Install nautilus hooks even when ~/.local/share/nautilus/ does not yet exist, since it is not automatically created for Gnome 3 users. * Windows: Move .vbs files out of git\bin, to avoid that being in the PATH, which caused some weird breakage. (Thanks, divB) * Windows: Fix locking issue that prevented the webapp starting (since 5.20140707). # imported from the archive
107 lines
3.5 KiB
Haskell
107 lines
3.5 KiB
Haskell
{- Temporary files and directories.
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-
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- Copyright 2010-2013 Joey Hess <joey@kitenet.net>
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-
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- License: BSD-2-clause
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-}
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{-# LANGUAGE CPP #-}
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module Utility.Tmp where
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import Control.Exception (bracket)
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import System.IO
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import System.Directory
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import Control.Monad.IfElse
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import System.FilePath
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import Utility.Exception
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import Utility.FileSystemEncoding
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import Utility.PosixFiles
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type Template = String
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{- Runs an action like writeFile, writing to a temp file first and
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- then moving it into place. The temp file is stored in the same
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- directory as the final file to avoid cross-device renames. -}
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viaTmp :: (FilePath -> String -> IO ()) -> FilePath -> String -> IO ()
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viaTmp a file content = bracket setup cleanup use
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where
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(dir, base) = splitFileName file
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template = base ++ ".tmp"
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setup = do
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createDirectoryIfMissing True dir
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openTempFile dir template
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cleanup (tmpfile, handle) = do
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_ <- tryIO $ hClose handle
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tryIO $ removeFile tmpfile
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use (tmpfile, handle) = do
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hClose handle
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a tmpfile content
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rename tmpfile file
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{- Runs an action with a tmp file located in the system's tmp directory
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- (or in "." if there is none) then removes the file. -}
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withTmpFile :: Template -> (FilePath -> Handle -> IO a) -> IO a
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withTmpFile template a = do
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tmpdir <- catchDefaultIO "." getTemporaryDirectory
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withTmpFileIn tmpdir template a
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{- Runs an action with a tmp file located in the specified directory,
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- then removes the file. -}
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withTmpFileIn :: FilePath -> Template -> (FilePath -> Handle -> IO a) -> IO a
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withTmpFileIn tmpdir template a = bracket create remove use
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where
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create = openTempFile tmpdir template
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remove (name, handle) = do
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hClose handle
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catchBoolIO (removeFile name >> return True)
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use (name, handle) = a name handle
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{- Runs an action with a tmp directory located within the system's tmp
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- directory (or within "." if there is none), then removes the tmp
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- directory and all its contents. -}
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withTmpDir :: Template -> (FilePath -> IO a) -> IO a
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withTmpDir template a = do
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tmpdir <- catchDefaultIO "." getTemporaryDirectory
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withTmpDirIn tmpdir template a
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{- Runs an action with a tmp directory located within a specified directory,
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- then removes the tmp directory and all its contents. -}
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withTmpDirIn :: FilePath -> Template -> (FilePath -> IO a) -> IO a
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withTmpDirIn tmpdir template = bracket create remove
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where
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remove d = whenM (doesDirectoryExist d) $ do
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#if mingw32_HOST_OS
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-- Windows will often refuse to delete a file
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-- after a process has just written to it and exited.
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-- Because it's crap, presumably. So, ignore failure
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-- to delete the temp directory.
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_ <- tryIO $ removeDirectoryRecursive d
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return ()
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#else
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removeDirectoryRecursive d
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#endif
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create = do
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createDirectoryIfMissing True tmpdir
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makenewdir (tmpdir </> template) (0 :: Int)
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makenewdir t n = do
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let dir = t ++ "." ++ show n
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either (const $ makenewdir t $ n + 1) (const $ return dir)
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=<< tryIO (createDirectory dir)
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{- It's not safe to use a FilePath of an existing file as the template
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- for openTempFile, because if the FilePath is really long, the tmpfile
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- will be longer, and may exceed the maximum filename length.
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-
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- This generates a template that is never too long.
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- (Well, it allocates 20 characters for use in making a unique temp file,
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- anyway, which is enough for the current implementation and any
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- likely implementation.)
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-}
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relatedTemplate :: FilePath -> FilePath
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relatedTemplate f
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| len > 20 = truncateFilePath (len - 20) f
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| otherwise = f
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where
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len = length f
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