65 lines
1.9 KiB
Haskell
65 lines
1.9 KiB
Haskell
{- git-annex command-line actions
|
|
-
|
|
- Copyright 2010-2014 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU GPL version 3 or higher.
|
|
-}
|
|
|
|
module CmdLine.Action where
|
|
|
|
import Common.Annex
|
|
import qualified Annex
|
|
import Types.Command
|
|
import qualified Annex.Queue
|
|
|
|
type CommandActionRunner = CommandStart -> CommandCleanup
|
|
|
|
{- Runs a command, starting with the check stage, and then
|
|
- the seek stage. Finishes by running the continutation, and
|
|
- then showing a count of any failures. -}
|
|
performCommandAction :: Command -> CmdParams -> Annex () -> Annex ()
|
|
performCommandAction Command { cmdseek = seek, cmdcheck = c, cmdname = name } params cont = do
|
|
mapM_ runCheck c
|
|
Annex.changeState $ \s -> s { Annex.errcounter = 0 }
|
|
seek params
|
|
cont
|
|
showerrcount =<< Annex.getState Annex.errcounter
|
|
where
|
|
showerrcount 0 = noop
|
|
showerrcount cnt = error $ name ++ ": " ++ show cnt ++ " failed"
|
|
|
|
{- Runs one of the actions needed to perform a command.
|
|
- Individual actions can fail without stopping the whole command,
|
|
- including by throwing IO errors (but other errors terminate the whole
|
|
- command).
|
|
-
|
|
- This should only be run in the seek stage. -}
|
|
commandAction :: CommandActionRunner
|
|
commandAction a = account =<< tryIO go
|
|
where
|
|
go = do
|
|
Annex.Queue.flushWhenFull
|
|
callCommandAction a
|
|
account (Right True) = return True
|
|
account (Right False) = incerr
|
|
account (Left err) = do
|
|
toplevelWarning True (show err)
|
|
showEndFail
|
|
incerr
|
|
incerr = do
|
|
Annex.incError
|
|
return False
|
|
|
|
{- Runs a single command action through the start, perform and cleanup
|
|
- stages, without catching errors. Useful if one command wants to run
|
|
- part of another command. -}
|
|
callCommandAction :: CommandActionRunner
|
|
callCommandAction = start
|
|
where
|
|
start = stage $ maybe skip perform
|
|
perform = stage $ maybe failure cleanup
|
|
cleanup = stage $ status
|
|
stage = (=<<)
|
|
skip = return True
|
|
failure = showEndFail >> return False
|
|
status r = showEndResult r >> return r
|