Add version command to show git-annex version as well as repository version information.

(cherry picked from commit 828a84ba3341d4b7a84292d8b9002a8095dd2382)

Conflicts:

	GitAnnex.hs
	Upgrade.hs
	Version.hs
	debian/changelog

1 files changed, 37 insertions, 0 deletions

diff --git a/Command/Version.hs b/Command/Version.hs
new file mode 100644
index 000000000..4d18469c6
--- /dev/null
+++ b/Command/Version.hs
@@ -0,0 +1,37 @@
+{- git-annex command
+ -
+ - Copyright 2010 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+module Command.Version where
+
+import Control.Monad.State (liftIO)
+import Data.String.Utils
+
+import Command
+import qualified SysConfig
+import Version
+import Upgrade
+
+command :: [Command]
+command = [Command "version" paramNothing seek "show versions"]
+
+seek :: [CommandSeek]
+seek = [withNothing start]
+
+start :: CommandStartNothing
+start = do
+	liftIO $ putStrLn $ "git-annex version: " ++ SysConfig.packageversion
+	v <- getVersion
+	let v' = case v of
+		Just s -> s
+		Nothing -> "unknown"
+	liftIO $ putStrLn $ "local repository version: " ++ v'
+	liftIO $ putStrLn $ "default repository version: " ++ defaultVersion
+	liftIO $ putStrLn $ "supported repository versions: " ++ vs supportedVersions
+	liftIO $ putStrLn $ "upgrade supported from repository versions: " ++ vs upgradableVersions
+	return Nothing
+	where
+		vs l = join " " l