45 lines
1.2 KiB
Haskell
45 lines
1.2 KiB
Haskell
{- git check-attr interface
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-
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- Copyright 2010, 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.CheckAttr where
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import System.Exit
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import Common
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import Git
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import Git.Command
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import qualified Git.Filename
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{- Efficiently looks up a gitattributes value for each file in a list. -}
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lookup :: String -> [FilePath] -> Repo -> IO [(FilePath, String)]
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lookup attr files repo = do
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-- git check-attr needs relative filenames input; it will choke
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-- on some absolute filenames. This also means it will output
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-- all relative filenames.
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cwd <- getCurrentDirectory
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let relfiles = map (relPathDirToFile cwd . absPathFrom cwd) files
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(_, fromh, toh) <- hPipeBoth "git" (toCommand params)
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_ <- forkProcess $ do
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hClose fromh
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hPutStr toh $ join "\0" relfiles
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hClose toh
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exitSuccess
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hClose toh
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(map topair . lines) <$> hGetContents fromh
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where
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params = gitCommandLine
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[ Param "check-attr"
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, Param attr
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, Params "-z --stdin"
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] repo
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topair l = (file, value)
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where
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file = Git.Filename.decode $ join sep $ take end bits
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value = bits !! end
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end = length bits - 1
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bits = split sep l
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sep = ": " ++ attr ++ ": "
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