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|
{- git check-attr interface
-
- Copyright 2010, 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.CheckAttr where
import Common
import Git
import Git.Command
import qualified Git.Version
{- Efficiently looks up a gitattributes value for each file in a list. -}
lookup :: String -> [FilePath] -> Repo -> IO [(FilePath, String)]
lookup attr files repo = do
cwd <- getCurrentDirectory
(_, r) <- pipeBoth "git" (toCommand params) $
join "\0" $ input cwd
return $ zip files $ map attrvalue $ lines r
where
params = gitCommandLine
[ Param "check-attr"
, Param attr
, Params "-z --stdin"
] repo
{- Before git 1.7.7, git check-attr worked best with
- absolute filenames; using them worked around some bugs
- with relative filenames.
-
- With newer git, git check-attr chokes on some absolute
- filenames, and the bugs that necessitated them were fixed,
- so use relative filenames. -}
oldgit = Git.Version.older "1.7.7"
input cwd
| oldgit = map (absPathFrom cwd) files
| otherwise = map (relPathDirToFile cwd . absPathFrom cwd) files
attrvalue l = end bits !! 0
where
bits = split sep l
sep = ": " ++ attr ++ ": "
|
