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|
{- git-annex file matching
-
- Copyright 2012, 2013 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Annex.FileMatcher where
import qualified Data.Map as M
import Common.Annex
import Limit
import Utility.Matcher
import Types.Group
import Logs.Group
import Annex.UUID
import qualified Annex
import Git.FilePath
import Data.Either
import qualified Data.Set as S
type FileMatcher = Matcher MatchFiles
checkFileMatcher :: FileMatcher -> FilePath -> Annex Bool
checkFileMatcher matcher file = checkFileMatcher' matcher file S.empty True
checkFileMatcher' :: FileMatcher -> FilePath -> AssumeNotPresent -> Bool -> Annex Bool
checkFileMatcher' matcher file notpresent def
| isEmpty matcher = return def
| otherwise = do
matchfile <- getTopFilePath <$> inRepo (toTopFilePath file)
let fi = Annex.FileInfo
{ Annex.matchFile = matchfile
, Annex.relFile = file
}
matchMrun matcher $ \a -> a notpresent fi
matchAll :: FileMatcher
matchAll = generate []
parsedToMatcher :: [Either String (Token MatchFiles)] -> Either String FileMatcher
parsedToMatcher parsed = case partitionEithers parsed of
([], vs) -> Right $ generate vs
(es, _) -> Left $ unwords $ map ("Parse failure: " ++) es
parseToken :: MkLimit -> GroupMap -> String -> Either String (Token MatchFiles)
parseToken checkpresent groupmap t
| t `elem` tokens = Right $ token t
| t == "present" = use checkpresent
| otherwise = maybe (Left $ "near " ++ show t) use $ M.lookup k $
M.fromList
[ ("include", limitInclude)
, ("exclude", limitExclude)
, ("copies", limitCopies)
, ("inbackend", limitInBackend)
, ("largerthan", limitSize (>))
, ("smallerthan", limitSize (<))
, ("inallgroup", limitInAllGroup groupmap)
]
where
(k, v) = separate (== '=') t
use a = Operation <$> a v
{- This is really dumb tokenization; there's no support for quoted values.
- Open and close parens are always treated as standalone tokens;
- otherwise tokens must be separated by whitespace. -}
tokenizeMatcher :: String -> [String]
tokenizeMatcher = filter (not . null ) . concatMap splitparens . words
where
splitparens = segmentDelim (`elem` "()")
{- Generates a matcher for files large enough (or meeting other criteria)
- to be added to the annex, rather than directly to git. -}
largeFilesMatcher :: Annex FileMatcher
largeFilesMatcher = go =<< annexLargeFiles <$> Annex.getGitConfig
where
go Nothing = return matchAll
go (Just expr) = do
m <- groupMap
u <- getUUID
either badexpr return $ parsedToMatcher $
map (parseToken (limitPresent $ Just u) m)
(tokenizeMatcher expr)
badexpr e = error $ "bad annex.largefiles configuration: " ++ e
|
