40ecf58d4b
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.)
76 lines
2 KiB
Haskell
76 lines
2 KiB
Haskell
{- git-annex upgrade support
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-
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- Copyright 2010, 2013 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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{-# LANGUAGE CPP #-}
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module Upgrade where
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import Annex.Common
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import Annex.Version
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import Types.RepoVersion
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#ifndef mingw32_HOST_OS
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import qualified Upgrade.V0
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import qualified Upgrade.V1
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#endif
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import qualified Upgrade.V2
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import qualified Upgrade.V3
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import qualified Upgrade.V4
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import qualified Upgrade.V5
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import qualified Upgrade.V6
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import qualified Data.Map as M
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checkUpgrade :: RepoVersion -> Annex ()
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checkUpgrade = maybe noop giveup <=< needsUpgrade
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needsUpgrade :: RepoVersion -> Annex (Maybe String)
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needsUpgrade v
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| v `elem` supportedVersions = ok
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| otherwise = case M.lookup v autoUpgradeableVersions of
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Nothing
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| v `elem` upgradableVersions ->
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err "Upgrade this repository: git-annex upgrade"
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| otherwise ->
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err "Upgrade git-annex."
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Just newv -> ifM (upgrade True newv)
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( ok
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, err "Automatic upgrade failed!"
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)
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where
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err msg = return $ Just $ "Repository version " ++
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show (fromRepoVersion v) ++
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" is not supported. " ++ msg
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ok = return Nothing
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upgrade :: Bool -> RepoVersion -> Annex Bool
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upgrade automatic destversion = do
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upgraded <- go =<< getVersion
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when upgraded $
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setVersion destversion
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return upgraded
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where
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go (Just v)
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| v >= destversion = return True
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| otherwise = ifM (up v)
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( go (Just (RepoVersion (fromRepoVersion v + 1)))
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, return False
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)
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go _ = return True
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#ifndef mingw32_HOST_OS
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up (RepoVersion 0) = Upgrade.V0.upgrade
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up (RepoVersion 1) = Upgrade.V1.upgrade
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#else
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up (RepoVersion 0) = giveup "upgrade from v0 on Windows not supported"
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up (RepoVersion 1) = giveup "upgrade from v1 on Windows not supported"
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#endif
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up (RepoVersion 2) = Upgrade.V2.upgrade
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up (RepoVersion 3) = Upgrade.V3.upgrade automatic
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up (RepoVersion 4) = Upgrade.V4.upgrade automatic
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up (RepoVersion 5) = Upgrade.V5.upgrade automatic
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up (RepoVersion 6) = Upgrade.V6.upgrade automatic
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up _ = return True
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