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{- git-annex command
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Log where
import qualified Data.Set as S
import qualified Data.ByteString.Lazy.Char8 as L
import Data.Time.Clock.POSIX
import Data.Time
import System.Locale
import Data.Char
import Common.Annex
import Command
import qualified Logs.Location
import qualified Logs.Presence
import Annex.CatFile
import qualified Annex.Branch
import qualified Git
import Git.Command
import qualified Remote
def :: [Command]
def = [command "log" paramPaths seek "shows location log"]
seek :: [CommandSeek]
seek = [withFilesInGit $ whenAnnexed $ start]
start :: FilePath -> (Key, Backend) -> CommandStart
start file (key, _) = do
showStart file ""
showLog =<< readLog key
stop
showLog :: [(POSIXTime, Git.Ref)] -> Annex ()
showLog ps = do
zone <- liftIO getCurrentTimeZone
sets <- mapM getset ps
liftIO $ putStrLn ""
mapM_ (diff zone) $ zip sets (drop 1 sets ++ genesis)
where
genesis = [(0, S.empty)]
getset (ts, ref) = do
s <- S.fromList <$> get ref
return (ts, s)
get ref = map toUUID . Logs.Presence.getLog . L.unpack <$>
catObject ref
diff zone ((ts, new), (_, old)) = do
let time = show $ utcToLocalTime zone $
posixSecondsToUTCTime ts
output time True added
output time False removed
where
added = S.difference new old
removed = S.difference old new
output time present s = do
rs <- map (dropWhile isSpace) . lines <$>
Remote.prettyPrintUUIDs "log" (S.toList s)
liftIO $ mapM_ (putStrLn . indent . format) rs
where
format r = unwords
[ time
, if present then "+" else "-"
, r
]
getLog :: Key -> Annex [String]
getLog key = do
top <- fromRepo Git.workTree
p <- liftIO $ relPathCwdToFile top
let logfile = p </> Logs.Location.logFile key
inRepo $ pipeNullSplit
[ Params "log -z --pretty=format:%ct --raw --abbrev=40"
, Param $ show Annex.Branch.fullname
, Param "--"
, Param logfile
]
readLog :: Key -> Annex [(POSIXTime, Git.Ref)]
readLog key = mapMaybe (parse . lines) <$> getLog key
where
parse (ts:raw:[]) = Just (parseTimeStamp ts, parseRaw raw)
parse _ = Nothing
-- Parses something like ":100644 100644 oldsha newsha M"
parseRaw :: String -> Git.Ref
parseRaw l = Git.Ref $ words l !! 3
parseTimeStamp :: String -> POSIXTime
parseTimeStamp = utcTimeToPOSIXSeconds . fromMaybe (error "bad timestamp") .
parseTime defaultTimeLocale "%s"
|
