59 lines
1.7 KiB
Haskell
59 lines
1.7 KiB
Haskell
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{- git repository configuration handling
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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.Config (
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get,
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read,
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hRead,
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store
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) where
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import Prelude hiding (read)
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import System.Posix.Directory
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import Control.Exception (bracket_)
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import qualified Data.Map as M
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import Common
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import Git
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import Git.Types
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import qualified Git.Construct
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{- Returns a single git config setting, or a default value if not set. -}
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get :: String -> String -> Repo -> String
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get key defaultValue repo = M.findWithDefault defaultValue key (config repo)
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{- Runs git config and populates a repo with its config. -}
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read :: Repo -> IO Repo
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read repo@(Repo { location = Dir d }) = do
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{- Cannot use pipeRead because it relies on the config having
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been already read. Instead, chdir to the repo. -}
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cwd <- getCurrentDirectory
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bracket_ (changeWorkingDirectory d) (changeWorkingDirectory cwd) $
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pOpen ReadFromPipe "git" ["config", "--list"] $ hRead repo
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read r = assertLocal r $ error "internal"
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{- Reads git config from a handle and populates a repo with it. -}
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hRead :: Repo -> Handle -> IO Repo
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hRead repo h = do
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val <- hGetContentsStrict h
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store val repo
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{- Stores a git config into a repo, returning the new version of the repo.
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- The git config may be multiple lines, or a single line. Config settings
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- can be updated inrementally. -}
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store :: String -> Repo -> IO Repo
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store s repo = do
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let repo' = repo { config = parse s `M.union` config repo }
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rs <- Git.Construct.fromRemotes repo'
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return $ repo' { remotes = rs }
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{- Parses git config --list output into a config map. -}
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parse :: String -> M.Map String String
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parse s = M.fromList $ map pair $ lines s
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where
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pair = separate (== '=')
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