git-annex/Command/Inprogress.hs
Joey Hess 3a05d53761
add SeekInput (not yet used)
No behavior changes (hopefully), just adding SeekInput and plumbing it
through to the JSON display code for later use.

Over the course of 2 grueling days.

withFilesNotInGit reimplemented in terms of seekHelper
should be the only possible behavior change. It seems to test as
behaving the same.

Note that seekHelper dummies up the SeekInput in the case where
segmentPaths' gives up on sorting the expanded paths because there are
too many input paths. When SeekInput later gets exposed as a json field,
that will result in it being a little bit wrong in the case where
100 or more paths are passed to a git-annex command. I think this is a
subtle enough problem to not matter. If it does turn out to be a
problem, fixing it would require splitting up the input
parameters into groups of < 100, which would make git ls-files run
perhaps more than is necessary. May want to revisit this, because that
fix seems fairly low-impact.
2020-09-15 15:41:13 -04:00

61 lines
1.5 KiB
Haskell

{- git-annex command
-
- Copyright 2017 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
module Command.Inprogress where
import Command
import Annex.Transfer
import qualified Data.Set as S
cmd :: Command
cmd = noCommit $ noMessages $ command "inprogress" SectionQuery
"access files while they're being downloaded"
paramPaths (seek <$$> optParser)
data InprogressOptions = InprogressOptions
{ inprogressFiles :: CmdParams
, keyOptions :: Maybe KeyOptions
}
optParser :: CmdParamsDesc -> Parser InprogressOptions
optParser desc = InprogressOptions
<$> cmdParams desc
<*> optional (parseAllOption <|> parseSpecificKeyOption)
seek :: InprogressOptions -> CommandSeek
seek o = do
ts <- map (transferKey . fst) <$> getTransfers
case keyOptions o of
Just WantAllKeys ->
forM_ ts $ commandAction . start'
Just (WantSpecificKey k)
| k `elem` ts -> commandAction (start' k)
| otherwise -> commandAction stop
_ -> do
let s = S.fromList ts
let seeker = AnnexedFileSeeker
{ startAction = start s
, checkContentPresent = Nothing
, usesLocationLog = False
}
withFilesInGitAnnex ww seeker
=<< workTreeItems ww (inprogressFiles o)
where
ww = WarnUnmatchLsFiles
start :: S.Set Key -> SeekInput -> RawFilePath -> Key -> CommandStart
start s _si _file k
| S.member k s = start' k
| otherwise = stop
start' :: Key -> CommandStart
start' k = startingCustomOutput k $ do
tmpf <- fromRepo $ gitAnnexTmpObjectLocation k
whenM (liftIO $ doesFileExist tmpf) $
liftIO $ putStrLn tmpf
next $ return True