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|
{- A "remote" that is just a local directory.
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Remote.Directory (remote) where
import IO
import Control.Exception.Extensible (IOException)
import qualified Data.Map as M
import Data.Maybe
import Control.Monad (when)
import Control.Monad.State (liftIO)
import System.Directory (doesDirectoryExist, doesFileExist, removeFile)
import System.FilePath
import RemoteClass
import Types
import qualified GitRepo as Git
import qualified Annex
import UUID
import Utility
import Locations
import CopyFile
import Remote.Special
remote :: RemoteType Annex
remote = RemoteType {
typename = "directory",
enumerate = findSpecialRemotes "directory",
generate = gen,
setup = directorySetup
}
gen :: Git.Repo -> UUID -> Cost -> Maybe (M.Map String String) -> Annex (Remote Annex)
gen r u cst c = return this
where
this = Remote {
uuid = u,
cost = cst,
name = Git.repoDescribe r,
storeKey = store this,
retrieveKeyFile = retrieve this,
removeKey = remove this,
hasKey = checkPresent this,
hasKeyCheap = True,
config = c
}
directorySetup :: UUID -> M.Map String String -> Annex (M.Map String String)
directorySetup u c = do
-- verify configuration is sane
let dir = case M.lookup "directory" c of
Nothing -> error "Specify directory="
Just d -> d
e <- liftIO $ doesDirectoryExist dir
when (not e) $ error $ "Directory does not exist: " ++ dir
gitConfigSpecialRemote "directory" u c
g <- Annex.gitRepo
liftIO $ do
Git.run g "config" [Param (configsetting "annex-directory"), Param "true"]
Git.run g "config" [Param (configsetting "annex-uuid"), Param u]
return c
where
remotename = fromJust (M.lookup "name" c)
configsetting s = "remote." ++ remotename ++ "." ++ s
dirKey :: Remote Annex -> Key -> FilePath
dirKey r k = dir </> show k
where
dir = fromJust $ M.lookup "directory" $ fromJust $ config r
store :: Remote Annex -> Key -> Annex Bool
store r k = do
g <- Annex.gitRepo
liftIO $ copyFile (gitAnnexLocation g k) (dirKey r k)
retrieve :: Remote Annex -> Key -> FilePath -> Annex Bool
retrieve r k f = liftIO $ copyFile (dirKey r k) f
remove :: Remote Annex -> Key -> Annex Bool
remove r k = liftIO $ catch
(removeFile (dirKey r k) >> return True)
(const $ return False)
checkPresent :: Remote Annex -> Key -> Annex (Either IOException Bool)
checkPresent r k = liftIO $ try $ doesFileExist (dirKey r k)
|
