git-annex/Remote/WebDAV/DavLocation.hs
Joey Hess c3f8512475 WebDAV: Avoid buffering whole file in memory when downloading.
httpBodyRetriever will later also be used by S3

This commit was sponsored by Ethan Aubin.
2014-08-08 13:40:55 -04:00

62 lines
1.6 KiB
Haskell

{- WebDAV locations.
-
- Copyright 2014 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE FlexibleContexts #-}
module Remote.WebDAV.DavLocation where
import Types
import Locations
import Utility.Url (URLString)
import System.FilePath.Posix -- for manipulating url paths
import Network.Protocol.HTTP.DAV (inDAVLocation, DAVT)
import Control.Monad.IO.Class (MonadIO)
#ifdef mingw32_HOST_OS
import Data.String.Utils
#endif
-- Relative to the top of the DAV url.
type DavLocation = String
{- Runs action in subdirectory, relative to the current location. -}
inLocation :: (MonadIO m) => DavLocation -> DAVT m a -> DAVT m a
inLocation d = inDAVLocation (</> d)
{- The directory where files(s) for a key are stored. -}
keyDir :: Key -> DavLocation
keyDir k = addTrailingPathSeparator $ hashdir </> keyFile k
where
#ifndef mingw32_HOST_OS
hashdir = hashDirLower k
#else
hashdir = replace "\\" "/" (hashDirLower k)
#endif
keyLocation :: Key -> DavLocation
keyLocation k = keyDir k ++ keyFile k
{- Where we store temporary data for a key as it's being uploaded. -}
keyTmpLocation :: Key -> DavLocation
keyTmpLocation = addTrailingPathSeparator . tmpLocation . keyFile
tmpLocation :: FilePath -> DavLocation
tmpLocation f = tmpDir </> f
tmpDir :: DavLocation
tmpDir = "tmp"
locationParent :: String -> Maybe String
locationParent loc
| loc `elem` tops = Nothing
| otherwise = Just (takeDirectory loc)
where
tops = ["/", "", "."]
locationUrl :: URLString -> DavLocation -> URLString
locationUrl baseurl loc = baseurl </> loc