bdec7fed9c
Adds a dependency on filepath-bytestring, an as yet unreleased fork of filepath that operates on RawFilePath. Git.Repo also changed to use RawFilePath for the path to the repo. This does eliminate some RawFilePath -> FilePath -> RawFilePath conversions. And filepath-bytestring's </> is probably faster. But I don't expect a major performance improvement from this. This is mostly groundwork for making Annex.Location use RawFilePath, which will allow for a conversion-free pipleline.
97 lines
2.8 KiB
Haskell
97 lines
2.8 KiB
Haskell
{- git FilePath library
|
|
-
|
|
- Different git commands use different types of FilePaths to refer to
|
|
- files in the repository. Some commands use paths relative to the
|
|
- top of the repository even when run in a subdirectory. Adding some
|
|
- types helps keep that straight.
|
|
-
|
|
- Copyright 2012-2019 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
{-# LANGUAGE CPP #-}
|
|
{-# LANGUAGE DeriveGeneric #-}
|
|
{-# LANGUAGE OverloadedStrings #-}
|
|
|
|
module Git.FilePath (
|
|
TopFilePath,
|
|
BranchFilePath(..),
|
|
descBranchFilePath,
|
|
getTopFilePath,
|
|
fromTopFilePath,
|
|
toTopFilePath,
|
|
asTopFilePath,
|
|
InternalGitPath,
|
|
toInternalGitPath,
|
|
fromInternalGitPath,
|
|
absoluteGitPath
|
|
) where
|
|
|
|
import Common
|
|
import Git
|
|
|
|
import qualified System.FilePath.ByteString as P
|
|
import qualified System.FilePath.Posix.ByteString
|
|
import GHC.Generics
|
|
import Control.DeepSeq
|
|
import qualified Data.ByteString as S
|
|
|
|
{- A RawFilePath, relative to the top of the git repository. -}
|
|
newtype TopFilePath = TopFilePath { getTopFilePath :: RawFilePath }
|
|
deriving (Show, Eq, Ord, Generic)
|
|
|
|
instance NFData TopFilePath
|
|
|
|
{- A file in a branch or other treeish. -}
|
|
data BranchFilePath = BranchFilePath Ref TopFilePath
|
|
deriving (Show, Eq, Ord)
|
|
|
|
{- Git uses the branch:file form to refer to a BranchFilePath -}
|
|
descBranchFilePath :: BranchFilePath -> S.ByteString
|
|
descBranchFilePath (BranchFilePath b f) =
|
|
encodeBS' (fromRef b) <> ":" <> getTopFilePath f
|
|
|
|
{- Path to a TopFilePath, within the provided git repo. -}
|
|
fromTopFilePath :: TopFilePath -> Git.Repo -> RawFilePath
|
|
fromTopFilePath p repo = P.combine (repoPath repo) (getTopFilePath p)
|
|
|
|
{- The input FilePath can be absolute, or relative to the CWD. -}
|
|
toTopFilePath :: RawFilePath -> Git.Repo -> IO TopFilePath
|
|
toTopFilePath file repo = TopFilePath . toRawFilePath
|
|
<$> relPathDirToFile (fromRawFilePath (repoPath repo)) (fromRawFilePath file)
|
|
|
|
{- The input RawFilePath must already be relative to the top of the git
|
|
- repository -}
|
|
asTopFilePath :: RawFilePath -> TopFilePath
|
|
asTopFilePath file = TopFilePath file
|
|
|
|
{- Git may use a different representation of a path when storing
|
|
- it internally.
|
|
-
|
|
- On Windows, git uses '/' to separate paths stored in the repository,
|
|
- despite Windows using '\'.
|
|
-
|
|
-}
|
|
type InternalGitPath = RawFilePath
|
|
|
|
toInternalGitPath :: RawFilePath -> InternalGitPath
|
|
#ifndef mingw32_HOST_OS
|
|
toInternalGitPath = id
|
|
#else
|
|
toInternalGitPath = encodeBS . replace "\\" "/" . decodeBS
|
|
#endif
|
|
|
|
fromInternalGitPath :: InternalGitPath -> RawFilePath
|
|
#ifndef mingw32_HOST_OS
|
|
fromInternalGitPath = id
|
|
#else
|
|
fromInternalGitPath = encodeBS . replace "/" "\\" . decodeBS
|
|
#endif
|
|
|
|
{- isAbsolute on Windows does not think "/foo" or "\foo" is absolute,
|
|
- so try posix paths.
|
|
-}
|
|
absoluteGitPath :: RawFilePath -> Bool
|
|
absoluteGitPath p = P.isAbsolute p ||
|
|
System.FilePath.Posix.ByteString.isAbsolute (toInternalGitPath p)
|