git-annex/Git/Types.hs
Joey Hess 5287d1dc3f fixed behavior when multiple insteadOf configs are provided for the same url base
Consider this git config --list case:

url.git+ssh://git@example.com/.insteadOf=gl
url.git+ssh://git@example.com/.insteadOf=shared

Since config is stored in a Map, only the last of the values for this key
was stored and available for use by the insteadOf code. But that
is wrong; git allows either "gl" or "shared" to be used in an url and
the insteadOf value to be substituted in.

To support this, it seems best to keep the existing config map as-is,
and add a second map that accumulates a list of multiple values for
config keys. This new fullconfig map can be used in the rare places where
multiple values for a key make sense, without needing to complicate
everything else.

Haskell's laziness and data sharing keep the overhead of adding
this second map low.
2011-12-30 14:07:46 -04:00

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Haskell

{- git data types
-
- Copyright 2010,2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Git.Types where
import Network.URI
import qualified Data.Map as M
{- There are two types of repositories; those on local disk and those
- accessed via an URL. -}
data RepoLocation = Dir FilePath | Url URI | Unknown
deriving (Show, Eq)
data Repo = Repo {
location :: RepoLocation,
config :: M.Map String String,
-- a given git config key can actually have multiple values
fullconfig :: M.Map String [String],
remotes :: [Repo],
-- remoteName holds the name used for this repo in remotes
remoteName :: Maybe String
} deriving (Show, Eq)
{- A git ref. Can be a sha1, or a branch or tag name. -}
newtype Ref = Ref String
deriving (Eq)
instance Show Ref where
show (Ref v) = v
{- Aliases for Ref. -}
type Branch = Ref
type Sha = Ref
type Tag = Ref