summaryrefslogtreecommitdiff
path: root/Annex/Version.hs
blob: 31c6501befa62b22f7fe9abeaca48810c9009519 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
{- git-annex repository versioning
 -
 - Copyright 2010,2013 Joey Hess <joey@kitenet.net>
 -
 - Licensed under the GNU GPL version 3 or higher.
 -}

module Annex.Version where

import Common.Annex
import Config
import qualified Annex

type Version = String

defaultVersion :: Version
defaultVersion = "3"

directModeVersion :: Version
directModeVersion = "4"

supportedVersions :: [Version]
supportedVersions = [defaultVersion, directModeVersion]

upgradableVersions :: [Version]
upgradableVersions = ["0", "1", "2"]

versionField :: ConfigKey
versionField = annexConfig "version"

getVersion :: Annex (Maybe Version)
getVersion = annexVersion <$> Annex.getGitConfig

setVersion :: Version -> Annex ()
setVersion = setConfig versionField

removeVersion :: Annex ()
removeVersion = unsetConfig versionField

checkVersion :: Version -> Annex ()
checkVersion v
	| v `elem` supportedVersions = noop
	| v `elem` upgradableVersions = err "Upgrade this repository: git-annex upgrade"
	| otherwise = err "Upgrade git-annex."
  where
	err msg = error $ "Repository version " ++ v ++
		" is not supported. " ++ msg