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
191
192
193
194
195
196
197
|
{- git-annex monad
-
- Copyright 2010-2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE GeneralizedNewtypeDeriving, TypeFamilies, MultiParamTypeClasses #-}
module Annex (
Annex,
AnnexState(..),
FileInfo(..),
PreferredContentMap,
new,
newState,
run,
eval,
exec,
getState,
changeState,
setFlag,
setField,
setOutput,
getFlag,
getField,
addCleanup,
gitRepo,
inRepo,
fromRepo,
) where
import Control.Monad.State.Strict
import Control.Monad.Trans.Control (StM, MonadBaseControl, liftBaseWith, restoreM)
import Control.Monad.Base (liftBase, MonadBase)
import System.Posix.Types (Fd)
import Common
import qualified Git
import qualified Git.Config
import Git.CatFile
import Git.CheckAttr
import Git.SharedRepository
import qualified Git.Queue
import Types.Backend
import qualified Types.Remote
import Types.Crypto
import Types.BranchState
import Types.TrustLevel
import Types.Group
import Types.Messages
import Types.UUID
import Utility.State
import qualified Utility.Matcher
import qualified Data.Map as M
import qualified Data.Set as S
-- git-annex's monad
newtype Annex a = Annex { runAnnex :: StateT AnnexState IO a }
deriving (
Monad,
MonadIO,
MonadState AnnexState,
Functor,
Applicative
)
instance MonadBase IO Annex where
liftBase = Annex . liftBase
instance MonadBaseControl IO Annex where
newtype StM Annex a = StAnnex (StM (StateT AnnexState IO) a)
liftBaseWith f = Annex $ liftBaseWith $ \runInIO ->
f $ liftM StAnnex . runInIO . runAnnex
restoreM = Annex . restoreM . unStAnnex
where
unStAnnex (StAnnex st) = st
type Matcher a = Either [Utility.Matcher.Token a] (Utility.Matcher.Matcher a)
data FileInfo = FileInfo
{ relFile :: FilePath -- may be relative to cwd
, matchFile :: FilePath -- filepath to match on; may be relative to top
}
type PreferredContentMap = M.Map UUID (Utility.Matcher.Matcher (S.Set UUID -> FileInfo -> Annex Bool))
-- internal state storage
data AnnexState = AnnexState
{ repo :: Git.Repo
, backends :: [BackendA Annex]
, remotes :: [Types.Remote.RemoteA Annex]
, output :: MessageState
, force :: Bool
, fast :: Bool
, auto :: Bool
, branchstate :: BranchState
, repoqueue :: Maybe Git.Queue.Queue
, catfilehandle :: Maybe CatFileHandle
, checkattrhandle :: Maybe CheckAttrHandle
, forcebackend :: Maybe String
, forcenumcopies :: Maybe Int
, limit :: Matcher (FileInfo -> Annex Bool)
, uuidmap :: Maybe UUIDMap
, preferredcontentmap :: Maybe PreferredContentMap
, shared :: Maybe SharedRepository
, forcetrust :: TrustMap
, trustmap :: Maybe TrustMap
, groupmap :: Maybe GroupMap
, ciphers :: M.Map StorableCipher Cipher
, lockpool :: M.Map FilePath Fd
, flags :: M.Map String Bool
, fields :: M.Map String String
, cleanup :: M.Map String (Annex ())
}
newState :: Git.Repo -> AnnexState
newState gitrepo = AnnexState
{ repo = gitrepo
, backends = []
, remotes = []
, output = defaultMessageState
, force = False
, fast = False
, auto = False
, branchstate = startBranchState
, repoqueue = Nothing
, catfilehandle = Nothing
, checkattrhandle = Nothing
, forcebackend = Nothing
, forcenumcopies = Nothing
, limit = Left []
, uuidmap = Nothing
, preferredcontentmap = Nothing
, shared = Nothing
, forcetrust = M.empty
, trustmap = Nothing
, groupmap = Nothing
, ciphers = M.empty
, lockpool = M.empty
, flags = M.empty
, fields = M.empty
, cleanup = M.empty
}
{- Makes an Annex state object for the specified git repo.
- Ensures the config is read, if it was not already. -}
new :: Git.Repo -> IO AnnexState
new = newState <$$> Git.Config.read
{- performs an action in the Annex monad -}
run :: AnnexState -> Annex a -> IO (a, AnnexState)
run s a = runStateT (runAnnex a) s
eval :: AnnexState -> Annex a -> IO a
eval s a = evalStateT (runAnnex a) s
exec :: AnnexState -> Annex a -> IO AnnexState
exec s a = execStateT (runAnnex a) s
{- Sets a flag to True -}
setFlag :: String -> Annex ()
setFlag flag = changeState $ \s ->
s { flags = M.insertWith' const flag True $ flags s }
{- Sets a field to a value -}
setField :: String -> String -> Annex ()
setField field value = changeState $ \s ->
s { fields = M.insertWith' const field value $ fields s }
{- Adds a cleanup action to perform. -}
addCleanup :: String -> Annex () -> Annex ()
addCleanup uid a = changeState $ \s ->
s { cleanup = M.insertWith' const uid a $ cleanup s }
{- Sets the type of output to emit. -}
setOutput :: OutputType -> Annex ()
setOutput o = changeState $ \s ->
s { output = (output s) { outputType = o } }
{- Checks if a flag was set. -}
getFlag :: String -> Annex Bool
getFlag flag = fromMaybe False . M.lookup flag <$> getState flags
{- Gets the value of a field. -}
getField :: String -> Annex (Maybe String)
getField field = M.lookup field <$> getState fields
{- Returns the annex's git repository. -}
gitRepo :: Annex Git.Repo
gitRepo = getState repo
{- Runs an IO action in the annex's git repository. -}
inRepo :: (Git.Repo -> IO a) -> Annex a
inRepo a = liftIO . a =<< gitRepo
{- Extracts a value from the annex's git repisitory. -}
fromRepo :: (Git.Repo -> a) -> Annex a
fromRepo a = a <$> gitRepo
|
