blob: dc618d36e07fa16e22a494692832f1ab1443a806 (
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
|
{- git-annex command
-
- Copyright 2015 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Smudge where
import Common.Annex
import Command
import Types.Key
import qualified Data.ByteString.Lazy as B
cmd :: Command
cmd = dontCheck repoExists $
command "smudge" SectionPlumbing
"git smudge filter"
paramFile (withParams seek)
seek :: CmdParams -> CommandSeek
seek = withWords start
start :: [String] -> CommandStart
start [_file] = do
liftIO $ fileEncoding stdin
s <- liftIO $ hGetContents stdin
case parsePointer s of
Nothing -> liftIO $ putStr s
Just k -> do
content <- calcRepo (gitAnnexLocation k)
liftIO $ maybe
(putStr s)
(B.hPut stdout)
=<< catchMaybeIO (B.readFile content)
stop
start [] = error "smudge filter run without filename; upgrade git"
start _ = error "smudge filter passed multiple filenames"
parsePointer :: String -> Maybe Key
parsePointer s
| length s' >= maxsz = Nothing -- too long to be a key pointer
| otherwise = headMaybe (lines s') >>= file2key
where
s' = take maxsz s
maxsz = 81920
|
