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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
import qualified Option
def :: [Command]
def = [withOptions [afterOption] $
command "log" paramPaths seek "shows location log"]
afterOption :: Option
afterOption = Option.field [] "after" paramDate "show log after date"
seek :: [CommandSeek]
seek = [withField afterOption return $ \afteropt ->
withFilesInGit $ whenAnnexed $ start afteropt]
start :: Maybe String -> FilePath -> (Key, Backend) -> CommandStart
start afteropt file (key, _) = do
let ps = case afteropt of
Nothing -> []
Just date -> [Param "--after", Param date]
showLog file =<< (readLog <$> getLog key ps)
stop
showLog :: FilePath -> [(POSIXTime, (Git.Ref, Git.Ref))] -> Annex ()
showLog file ps = do
zone <- liftIO getCurrentTimeZone
sets <- mapM (getset snd) ps
previous <- maybe (return genesis) (getset fst) (lastMaybe ps)
mapM_ (diff zone) $ zip sets (drop 1 sets ++ [previous])
where
genesis = (0, S.empty)
getset select (ts, refs) = do
s <- S.fromList <$> get (select refs)
return (ts, s)
get ref = map toUUID . Logs.Presence.getLog . L.unpack <$>
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 . format) rs
where
format r = unwords
[ if present then "+" else "-"
, time
, file
, "|"
, r
]
getLog :: Key -> [CommandParam] -> Annex [String]
getLog key ps = 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 "--boundary"
] ++ ps ++
[ Param $ show Annex.Branch.fullname
, Param "--"
, Param logfile
]
readLog :: [String] -> [(POSIXTime, (Git.Ref, Git.Ref))]
readLog = mapMaybe (parse . lines)
where
parse (ts:raw:[]) = Just (parseTimeStamp ts, parseRaw raw)
parse _ = Nothing
-- Parses something like ":100644 100644 oldsha newsha M"
parseRaw :: String -> (Git.Ref, Git.Ref)
parseRaw l = (Git.Ref oldsha, Git.Ref newsha)
where
ws = words l
oldsha = ws !! 2
newsha = ws !! 3
parseTimeStamp :: String -> POSIXTime
parseTimeStamp = utcTimeToPOSIXSeconds . fromMaybe (error "bad timestamp") .
parseTime defaultTimeLocale "%s"
|
