57 lines
1.7 KiB
Haskell
57 lines
1.7 KiB
Haskell
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{- git-annex metadata
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-
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- Copyright 2014 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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module Annex.MetaData (
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genMetaData,
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module X
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) where
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import Common.Annex
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import qualified Annex
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import Types.MetaData as X
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import Annex.MetaData.StandardFields as X
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import Logs.MetaData
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import Annex.CatFile
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import qualified Data.Set as S
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import qualified Data.Map as M
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import Data.Time.Calendar
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import Data.Time.Clock
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import Data.Time.Clock.POSIX
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{- Adds metadata for a file that has just been ingested into the
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- annex, but has not yet been committed to git.
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-
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- When the file has been modified, the metadata is copied over
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- from the old key to the new key. Note that it looks at the old key as
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- committed to HEAD -- the new key may or may not have already been staged
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- in th annex.
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-
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- Also, can generate new metadata, if configured to do so.
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-}
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genMetaData :: Key -> FilePath -> FileStatus -> Annex ()
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genMetaData key file status = do
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maybe noop (flip copyMetaData key) =<< catKeyFileHEAD file
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whenM (annexGenMetaData <$> Annex.getGitConfig) $ do
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metadata <- getCurrentMetaData key
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let metadata' = genMetaData' status metadata
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unless (metadata' == emptyMetaData) $
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addMetaData key metadata'
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{- Generates metadata from the FileStatus.
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- Does not overwrite any existing metadata values. -}
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genMetaData' :: FileStatus -> MetaData -> MetaData
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genMetaData' status old = MetaData $ M.fromList $ filter isnew
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[ (yearMetaField, S.singleton $ toMetaValue $ show y)
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, (monthMetaField, S.singleton $ toMetaValue $ show m)
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]
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where
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isnew (f, _) = S.null (currentMetaDataValues f old)
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(y, m, _d) = toGregorian $ utctDay $
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posixSecondsToUTCTime $ realToFrac $
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modificationTime status
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