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|
{- git-annex remote log
-
- Copyright 2011 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Logs.Remote (
remoteLog,
readRemoteLog,
configSet,
keyValToConfig,
configToKeyVal,
showConfig,
parseConfig,
prop_isomorphic_configEscape,
prop_parse_show_Config,
) where
import qualified Data.Map as M
import Data.Time.Clock.POSIX
import Data.Char
import Common.Annex
import qualified Annex.Branch
import Types.Remote
import Logs
import Logs.UUIDBased
{- Adds or updates a remote's config in the log. -}
configSet :: UUID -> RemoteConfig -> Annex ()
configSet u c = do
ts <- liftIO getPOSIXTime
Annex.Branch.change remoteLog $
showLog showConfig . changeLog ts u c . parseLog parseConfig
{- Map of remotes by uuid containing key/value config maps. -}
readRemoteLog :: Annex (M.Map UUID RemoteConfig)
readRemoteLog = simpleMap . parseLog parseConfig <$> Annex.Branch.get remoteLog
parseConfig :: String -> Maybe RemoteConfig
parseConfig = Just . keyValToConfig . words
showConfig :: RemoteConfig -> String
showConfig = unwords . configToKeyVal
{- Given Strings like "key=value", generates a RemoteConfig. -}
keyValToConfig :: [String] -> RemoteConfig
keyValToConfig ws = M.fromList $ map (/=/) ws
where
(/=/) s = (k, v)
where
k = takeWhile (/= '=') s
v = configUnEscape $ drop (1 + length k) s
configToKeyVal :: M.Map String String -> [String]
configToKeyVal m = map toword $ sort $ M.toList m
where
toword (k, v) = k ++ "=" ++ configEscape v
configEscape :: String -> String
configEscape = concatMap escape
where
escape c
| isSpace c || c `elem` "&" = "&" ++ show (ord c) ++ ";"
| otherwise = [c]
configUnEscape :: String -> String
configUnEscape = unescape
where
unescape [] = []
unescape (c:rest)
| c == '&' = entity rest
| otherwise = c : unescape rest
entity s
| not (null num) && ";" `isPrefixOf` r =
chr (Prelude.read num) : unescape rest
| otherwise =
'&' : unescape s
where
num = takeWhile isNumber s
r = drop (length num) s
rest = drop 1 r
{- for quickcheck -}
prop_isomorphic_configEscape :: String -> Bool
prop_isomorphic_configEscape s = s == (configUnEscape . configEscape) s
prop_parse_show_Config :: RemoteConfig -> Bool
prop_parse_show_Config c
-- whitespace and '=' are not supported in keys
| any (\k -> any isSpace k || elem '=' k) (M.keys c) = True
| otherwise = parseConfig (showConfig c) ~~ Just c
where
normalize v = sort . M.toList <$> v
a ~~ b = normalize a == normalize b
|
