git-annex/Types/TrustLevel.hs
Joey Hess 40ecf58d4b
update licenses from GPL to AGPL
This does not change the overall license of the git-annex program, which
was already AGPL due to a number of sources files being AGPL already.

Legally speaking, I'm adding a new license under which these files are
now available; I already released their current contents under the GPL
license. Now they're dual licensed GPL and AGPL. However, I intend
for all my future changes to these files to only be released under the
AGPL license, and I won't be tracking the dual licensing status, so I'm
simply changing the license statement to say it's AGPL.

(In some cases, others wrote parts of the code of a file and released it
under the GPL; but in all cases I have contributed a significant portion
of the code in each file and it's that code that is getting the AGPL
license; the GPL license of other contributors allows combining with
AGPL code.)
2019-03-13 15:48:14 -04:00

51 lines
1.2 KiB
Haskell

{- git-annex trust levels
-
- Copyright 2010 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# LANGUAGE FlexibleInstances #-}
module Types.TrustLevel (
TrustLevel(..),
TrustMap,
readTrustLevel,
showTrustLevel,
prop_read_show_TrustLevel
) where
import qualified Data.Map as M
import Data.Default
import Data.Ord
import Types.UUID
data TrustLevel = DeadTrusted | UnTrusted | SemiTrusted | Trusted
deriving (Eq, Enum, Ord, Bounded, Show)
instance Default TrustLevel where
def = SemiTrusted
instance Default (Down TrustLevel) where
def = Down def
type TrustMap = M.Map UUID TrustLevel
readTrustLevel :: String -> Maybe TrustLevel
readTrustLevel "trusted" = Just Trusted
readTrustLevel "untrusted" = Just UnTrusted
readTrustLevel "semitrusted" = Just SemiTrusted
readTrustLevel "dead" = Just DeadTrusted
readTrustLevel _ = Nothing
showTrustLevel :: TrustLevel -> String
showTrustLevel Trusted = "trusted"
showTrustLevel UnTrusted = "untrusted"
showTrustLevel SemiTrusted = "semitrusted"
showTrustLevel DeadTrusted = "dead"
prop_read_show_TrustLevel :: Bool
prop_read_show_TrustLevel = all check [minBound .. maxBound]
where
check l = readTrustLevel (showTrustLevel l) == Just l