blob: 13df5f6c272c225bfc7f99c195ef523a5467b877 (
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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
{- user-specified limits on files to act on
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Limit where
import Text.Regex.PCRE.Light.Char8
import System.Path.WildMatch
import Control.Monad (filterM)
import Data.Maybe
import Annex
import qualified Utility.Matcher
import qualified Remote
import qualified Backend
import LocationLog
type Limit = Utility.Matcher.Token (FilePath -> Annex Bool)
{- Filter out files not matching user-specified limits. -}
filterFiles :: [FilePath] -> Annex [FilePath]
filterFiles l = do
matcher <- getMatcher
filterM (Utility.Matcher.matchM matcher) l
{- Gets a matcher for the user-specified limits. The matcher is cached for
- speed; once it's obtained the user-specified limits can't change. -}
getMatcher :: Annex (Utility.Matcher.Matcher (FilePath -> Annex Bool))
getMatcher = do
m <- Annex.getState Annex.limit
case m of
Right r -> return r
Left l -> do
let matcher = Utility.Matcher.generate (reverse l)
Annex.changeState $ \s -> s { Annex.limit = Right matcher }
return matcher
{- Adds something to the limit list, which is built up reversed. -}
add :: Limit -> Annex ()
add l = Annex.changeState $ \s -> s { Annex.limit = append $ Annex.limit s }
where
append (Left ls) = Left $ l:ls
append _ = error "internal"
{- Adds a new limit. -}
addlimit :: (FilePath -> Annex Bool) -> Annex ()
addlimit = add . Utility.Matcher.Operation
{- Adds a new token. -}
token :: String -> Annex ()
token = add . Utility.Matcher.Token
{- Add a limit to skip files that do not match the glob. -}
addExclude :: String -> Annex ()
addExclude glob = addlimit $ return . notExcluded
where
notExcluded f = isNothing $ match cregex f []
cregex = compile regex []
regex = '^':wildToRegex glob
{- Adds a limit to skip files not believed to be present
- on a specfied remote. -}
addIn :: String -> Annex ()
addIn name = do
u <- Remote.nameToUUID name
addlimit $ check u
where
check u f = Backend.lookupFile f >>= handle u
handle _ Nothing = return False
handle u (Just (key, _)) = do
us <- keyLocations key
return $ u `elem` us
|
