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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
{- git-annex command
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Vicfg where
import qualified Data.Map as M
import qualified Data.Set as S
import System.Environment (getEnv)
import Data.Tuple (swap)
import Data.Char (isSpace)
import Common.Annex
import Command
import Annex.Perms
import Types.TrustLevel
import Types.Group
import Logs.Trust
import Logs.Group
import Logs.PreferredContent
import Remote
def :: [Command]
def = [command "vicfg" paramNothing seek
SectionSetup "edit git-annex's configuration"]
seek :: [CommandSeek]
seek = [withNothing start]
start :: CommandStart
start = do
f <- fromRepo gitAnnexTmpCfgFile
createAnnexDirectory $ parentDir f
cfg <- getCfg
descs <- uuidDescriptions
liftIO $ writeFile f $ genCfg cfg descs
vicfg cfg f
stop
vicfg :: Cfg -> FilePath -> Annex ()
vicfg curcfg f = do
vi <- liftIO $ catchDefaultIO "vi" $ getEnv "EDITOR"
-- Allow EDITOR to be processed by the shell, so it can contain options.
unlessM (liftIO $ boolSystem "sh" [Param "-c", Param $ unwords [vi, shellEscape f]]) $
error $ vi ++ " exited nonzero; aborting"
r <- parseCfg curcfg <$> liftIO (readFileStrict f)
liftIO $ nukeFile f
case r of
Left s -> do
liftIO $ writeFile f s
vicfg curcfg f
Right newcfg -> setCfg curcfg newcfg
data Cfg = Cfg
{ cfgTrustMap :: TrustMap
, cfgGroupMap :: M.Map UUID (S.Set Group)
, cfgPreferredContentMap :: M.Map UUID String
}
getCfg :: Annex Cfg
getCfg = Cfg
<$> trustMapRaw -- without local trust overrides
<*> (groupsByUUID <$> groupMap)
<*> preferredContentMapRaw
setCfg :: Cfg -> Cfg -> Annex ()
setCfg curcfg newcfg = do
let (trustchanges, groupchanges, preferredcontentchanges) = diffCfg curcfg newcfg
mapM_ (uncurry trustSet) $ M.toList trustchanges
mapM_ (uncurry groupSet) $ M.toList groupchanges
mapM_ (uncurry preferredContentSet) $ M.toList preferredcontentchanges
diffCfg :: Cfg -> Cfg -> (TrustMap, M.Map UUID (S.Set Group), M.Map UUID String)
diffCfg curcfg newcfg = (diff cfgTrustMap, diff cfgGroupMap, diff cfgPreferredContentMap)
where
diff f = M.differenceWith (\x y -> if x == y then Nothing else Just x)
(f newcfg) (f curcfg)
genCfg :: Cfg -> M.Map UUID String -> String
genCfg cfg descs = unlines $ concat [intro, trust, groups, preferredcontent]
where
intro =
[ com "git-annex configuration"
, com ""
, com "Changes saved to this file will be recorded in the git-annex branch."
, com ""
, com "Lines in this file have the format:"
, com " setting uuid = value"
]
trust = settings cfgTrustMap
[ ""
, com "Repository trust configuration"
, com "(Valid trust levels: " ++
unwords (map showTrustLevel [Trusted .. DeadTrusted]) ++
")"
]
(\(t, u) -> line "trust" u $ showTrustLevel t)
(\u -> lcom $ line "trust" u $ showTrustLevel SemiTrusted)
groups = settings cfgGroupMap
[ ""
, com "Repository groups"
, com "(Separate group names with spaces)"
]
(\(s, u) -> line "group" u $ unwords $ S.toList s)
(\u -> lcom $ line "group" u "")
preferredcontent = settings cfgPreferredContentMap
[ ""
, com "Repository preferred contents"
]
(\(s, u) -> line "preferred-content" u s)
(\u -> line "preferred-content" u "")
settings field desc showvals showdefaults = concat
[ desc
, concatMap showvals $ sort $ map swap $ M.toList $ field cfg
, concatMap (\u -> lcom $ showdefaults u) $ missing field
]
line setting u value =
[ com $ "(for " ++ (fromMaybe "" $ M.lookup u descs) ++ ")"
, unwords [setting, fromUUID u, "=", value]
]
lcom = map (\l -> if "#" `isPrefixOf` l then l else "#" ++ l)
missing field = S.toList $ M.keysSet descs `S.difference` M.keysSet (field cfg)
{- If there's a parse error, returns a new version of the file,
- with the problem lines noted. -}
parseCfg :: Cfg -> String -> Either String Cfg
parseCfg curcfg = go [] curcfg . lines
where
go c cfg []
| null (catMaybes $ map fst c) = Right cfg
| otherwise = Left $ unlines $
badheader ++ concatMap showerr (reverse c)
go c cfg (l:ls) = case parse (dropWhile isSpace l) cfg of
Left msg -> go ((Just msg, l):c) cfg ls
Right cfg' -> go ((Nothing, l):c) cfg' ls
parse l cfg
| null l = Right cfg
| "#" `isPrefixOf` l = Right cfg
| null setting || null u = Left "missing repository uuid"
| otherwise = handle cfg (toUUID u) setting value'
where
(setting, rest) = separate isSpace l
(r, value) = separate (== '=') rest
value' = trimspace value
u = reverse $ trimspace $ reverse $ trimspace r
trimspace = dropWhile isSpace
handle cfg u setting value
| setting == "trust" = case readTrustLevel value of
Nothing -> badval "trust value" value
Just t ->
let m = M.insert u t (cfgTrustMap cfg)
in Right $ cfg { cfgTrustMap = m }
| setting == "group" =
let m = M.insert u (S.fromList $ words value) (cfgGroupMap cfg)
in Right $ cfg { cfgGroupMap = m }
| setting == "preferred-content" =
case checkPreferredContentExpression value of
Just e -> Left e
Nothing ->
let m = M.insert u value (cfgPreferredContentMap cfg)
in Right $ cfg { cfgPreferredContentMap = m }
| otherwise = badval "setting" setting
showerr (Just msg, l) = [parseerr ++ msg, l]
showerr (Nothing, l)
-- filter out the header and parse error lines
-- from any previous parse failure
| any (`isPrefixOf` l) (parseerr:badheader) = []
| otherwise = [l]
badval desc val = Left $ "unknown " ++ desc ++ " \"" ++ val ++ "\""
badheader =
[ com "There was a problem parsing your input."
, com "Search for \"Parse error\" to find the bad lines."
, com "Either fix the bad lines, or delete them (to discard your changes)."
]
parseerr = com "Parse error in next line: "
com :: String -> String
com s = "# " ++ s
|
