git-annex/Git/Url.hs
2012-12-13 00:24:19 -04:00

70 lines
1.7 KiB
Haskell

{- git repository urls
-
- Copyright 2010, 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.Url (
scheme,
host,
port,
hostuser,
authority,
) where
import Network.URI hiding (scheme, authority)
import Common
import Git.Types
import Git
{- Scheme of an URL repo. -}
scheme :: Repo -> String
scheme Repo { location = Url u } = uriScheme u
scheme repo = notUrl repo
{- Work around a bug in the real uriRegName
- <http://trac.haskell.org/network/ticket/40> -}
uriRegName' :: URIAuth -> String
uriRegName' a = fixup $ uriRegName a
where
fixup x@('[':rest)
| rest !! len == ']' = take len rest
| otherwise = x
where
len = length rest - 1
fixup x = x
{- Hostname of an URL repo. -}
host :: Repo -> String
host = authpart uriRegName'
{- Port of an URL repo, if it has a nonstandard one. -}
port :: Repo -> Maybe Integer
port r =
case authpart uriPort r of
":" -> Nothing
(':':p) -> readish p
_ -> Nothing
{- Hostname of an URL repo, including any username (ie, "user@host") -}
hostuser :: Repo -> String
hostuser r = authpart uriUserInfo r ++ authpart uriRegName' r
{- The full authority portion an URL repo. (ie, "user@host:port") -}
authority :: Repo -> String
authority = authpart assemble
where
assemble a = uriUserInfo a ++ uriRegName' a ++ uriPort a
{- Applies a function to extract part of the uriAuthority of an URL repo. -}
authpart :: (URIAuth -> a) -> Repo -> a
authpart a Repo { location = Url u } = a auth
where
auth = fromMaybe (error $ "bad url " ++ show u) (uriAuthority u)
authpart _ repo = notUrl repo
notUrl :: Repo -> a
notUrl repo = error $
"acting on local git repo " ++ repoDescribe repo ++ " not supported"