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
76
77
78
|
{- git ls-tree interface
-
- Copyright 2011 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.LsTree (
TreeItem(..),
lsTree,
lsTreeParams,
lsTreeFiles,
parseLsTree
) where
import Common
import Git
import Git.Command
import Git.Sha
import Git.FilePath
import qualified Git.Filename
import Numeric
import System.Posix.Types
data TreeItem = TreeItem
{ mode :: FileMode
, typeobj :: String
, sha :: String
, file :: TopFilePath
} deriving Show
{- Lists the complete contents of a tree, recursing into sub-trees,
- with lazy output. -}
lsTree :: Ref -> Repo -> IO [TreeItem]
lsTree t repo = map parseLsTree
<$> pipeNullSplitZombie (lsTreeParams t []) repo
lsTreeParams :: Ref -> [CommandParam] -> [CommandParam]
lsTreeParams r ps =
[ Param "ls-tree"
, Param "--full-tree"
, Param "-z"
, Param "-r"
] ++ ps ++
[ Param "--"
, File $ fromRef r
]
{- Lists specified files in a tree. -}
lsTreeFiles :: Ref -> [FilePath] -> Repo -> IO [TreeItem]
lsTreeFiles t fs repo = map parseLsTree <$> pipeNullSplitStrict ps repo
where
ps =
[ Param "ls-tree"
, Param "--full-tree"
, Param "-z"
, Param "--"
, File $ fromRef t
] ++ map File fs
{- Parses a line of ls-tree output.
- (The --long format is not currently supported.) -}
parseLsTree :: String -> TreeItem
parseLsTree l = TreeItem
{ mode = fst $ Prelude.head $ readOct m
, typeobj = t
, sha = s
, file = asTopFilePath $ Git.Filename.decode f
}
where
-- l = <mode> SP <type> SP <sha> TAB <file>
-- All fields are fixed, so we can pull them out of
-- specific positions in the line.
(m, past_m) = splitAt 7 l
(t, past_t) = splitAt 4 past_m
(s, past_s) = splitAt shaSize $ Prelude.tail past_t
f = Prelude.tail past_s
|
