whereis: New subcommand to show where a file's content has gotten to.

Command/Whereis.hs

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+{- git-annex command
+ -
+ - Copyright 2010 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Command.Whereis where
+
+import Control.Monad.State (liftIO)
+
+import qualified Annex
+import LocationLog
+import Command
+import Content
+import Messages
+import UUID
+import Types
+
+command :: [Command]
+command = [Command "whereis" (paramOptional $ paramRepeating paramPath) seek
+	"lists repositories that have file content"]
+
+seek :: [CommandSeek]
+seek = [withFilesInGit start]
+
+start :: CommandStartString
+start file = isAnnexed file $ \(key, _) -> do
+	showStart "whereis" file
+	return $ Just $ perform key
+
+perform :: Key -> CommandPerform
+perform key = do
+	g <- Annex.gitRepo
+	uuids <- liftIO $ keyLocations g key
+	pp <- prettyPrintUUIDs uuids
+	showLongNote $ pp
+	showProgress
+	if null $ uuids
+		then return Nothing
+		else return $ Just $ return True