git-annex/Command/Version.hs

{- git-annex command
 -
 - Copyright 2010 Joey Hess <joey@kitenet.net>
 -
 - Licensed under the GNU GPL version 3 or higher.
 -}

module Command.Version where

import Common.Annex
import Command
import qualified Build.SysConfig as SysConfig
import Annex.Version
import BuildFlags
import qualified Types.Backend as B
import qualified Types.Remote as R
import qualified Remote
import qualified Backend

def :: [Command]
def = [noCommit $ noRepo showPackageVersion $ dontCheck repoExists $
	command "version" paramNothing seek SectionQuery "show version info"]

seek :: [CommandSeek]
seek = [withNothing start]

start :: CommandStart
start = do
	v <- getVersion
	liftIO $ do
		showPackageVersion
		info "local repository version" $ fromMaybe "unknown" v
		info "default repository version" defaultVersion
		info "supported repository versions" $
			unwords supportedVersions
		info "upgrade supported from repository versions" $
			unwords upgradableVersions
	stop

showPackageVersion :: IO ()
showPackageVersion = do
	info "git-annex version" SysConfig.packageversion
	info "build flags" $ unwords buildFlags
	info "key/value backends" $ unwords $ map B.name Backend.list
	info "remote types" $ unwords $ map R.typename Remote.remoteTypes

info :: String -> String -> IO ()
info k v = putStrLn $ k ++ ": " ++ v