git-annex/Types/FileMatcher.hs
Joey Hess 029ae8d4db
support findred and --branch with file matching options
* findref: Support file matching options: --include, --exclude,
  --want-get, --want-drop, --largerthan, --smallerthan, --accessedwithin
* Commands supporting --branch now apply file matching options --include,
  --exclude, --want-get, --want-drop to filenames from the branch.
  Previously, combining --branch with those would fail to match anything.
* add, import, findref: Support --time-limit.

This commit was sponsored by Jake Vosloo on Patreon.
2018-12-09 13:38:35 -04:00

55 lines
1.5 KiB
Haskell

{- git-annex file matcher types
-
- Copyright 2013-2016 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Types.FileMatcher where
import Types.UUID (UUID)
import Types.Key (Key, AssociatedFile)
import Utility.Matcher (Matcher, Token)
import Utility.FileSize
import Control.Monad.IO.Class
import qualified Data.Map as M
import qualified Data.Set as S
data MatchInfo
= MatchingFile FileInfo
| MatchingKey Key AssociatedFile
| MatchingInfo (OptInfo FilePath) (OptInfo Key) (OptInfo FileSize) (OptInfo MimeType)
type MimeType = String
data FileInfo = FileInfo
{ currFile :: FilePath
-- ^ current path to the file, for operations that examine it
, matchFile :: FilePath
-- ^ filepath to match on; may be relative to top of repo or cwd
}
type OptInfo a = Either (IO a) a
-- If the OptInfo is not available, accessing it may result in eg an
-- exception being thrown.
getInfo :: MonadIO m => OptInfo a -> m a
getInfo (Right i) = return i
getInfo (Left e) = liftIO e
type FileMatcherMap a = M.Map UUID (Utility.Matcher.Matcher (S.Set UUID -> MatchInfo -> a Bool))
type MkLimit a = String -> Either String (MatchFiles a)
type AssumeNotPresent = S.Set UUID
type MatchFiles a = AssumeNotPresent -> MatchInfo -> a Bool
type FileMatcher a = Matcher (MatchFiles a)
-- This is a matcher that can have tokens added to it while it's being
-- built, and once complete is compiled to an unchangable matcher.
data ExpandableMatcher a
= BuildingMatcher [Token (MatchInfo -> a Bool)]
| CompleteMatcher (Matcher (MatchInfo -> a Bool))