d0fce426c4
Using the extract(1) program to do the heavy lifting. Decided to make git-annex run pre-commit-annex when committing. Since git-annex pre-commit also runs it, it'll be run when git commit is run too, via the pre-commit hook. This basically gives back the pre-commit hook that git-annex took away. The implementation avoids repeatedly looking for the hook script when the assistant is running and committing repeatedly; only checks if the hook is available once. To make the script simpler, made git-annex metadata -s field?=value only set a field when it's not already got a value. This commit was sponsored by bak.
58 lines
1.2 KiB
Haskell
58 lines
1.2 KiB
Haskell
{- git hooks
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-
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- Copyright 2013 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Git.Hook where
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import Common
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import Git
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import Utility.Tmp
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data Hook = Hook
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{ hookName :: FilePath
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, hookScript :: String
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}
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deriving (Ord)
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instance Eq Hook where
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a == b = hookName a == hookName b
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hookFile :: Hook -> Repo -> FilePath
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hookFile h r = localGitDir r </> "hooks" </> hookName h
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{- Writes a hook. Returns False if the hook already exists with a different
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- content. -}
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hookWrite :: Hook -> Repo -> IO Bool
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hookWrite h r = do
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let f = hookFile h r
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ifM (doesFileExist f)
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( expectedContent h r
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, do
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viaTmp writeFile f (hookScript h)
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p <- getPermissions f
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setPermissions f $ p {executable = True}
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return True
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)
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{- Removes a hook. Returns False if the hook contained something else, and
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- could not be removed. -}
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hookUnWrite :: Hook -> Repo -> IO Bool
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hookUnWrite h r = do
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let f = hookFile h r
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ifM (doesFileExist f)
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( ifM (expectedContent h r)
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( do
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removeFile f
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return True
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, return False
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)
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, return True
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)
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expectedContent :: Hook -> Repo -> IO Bool
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expectedContent h r = do
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content <- readFile $ hookFile h r
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return $ content == hookScript h
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