27 lines
576 B
Haskell
27 lines
576 B
Haskell
{- git index file stuff
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-
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- Copyright 2011 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.Index where
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import System.Posix.Env (setEnv, unsetEnv, getEnv)
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{- Forces git to use the specified index file.
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-
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- Returns an action that will reset back to the default
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- index file.
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-
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- Warning: Not thread safe.
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-}
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override :: FilePath -> IO (IO ())
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override index = do
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res <- getEnv var
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setEnv var index True
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return $ reset res
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where
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var = "GIT_INDEX_FILE"
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reset (Just v) = setEnv var v True
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reset _ = unsetEnv var
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