mirror of
https://code.naskya.net/repos/ndqEd
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109 lines
3.3 KiB
Haskell
109 lines
3.3 KiB
Haskell
{- This file is part of Vervis.
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-
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- Written in 2016 by fr33domlover <fr33domlover@riseup.net>.
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-
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- ♡ Copying is an act of love. Please copy, reuse and share.
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-
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- The author(s) have dedicated all copyright and related and neighboring
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- rights to this software to the public domain worldwide. This software is
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- distributed without any warranty.
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-
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- You should have received a copy of the CC0 Public Domain Dedication along
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- with this software. If not, see
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- <http://creativecommons.org/publicdomain/zero/1.0/>.
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-}
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module Data.Git.Local
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( -- * Initialize repo
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createRepo
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-- * View repo content
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, EntObjType (..)
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, TreeRows
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, PathView (..)
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, viewPath
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)
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where
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import Prelude
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import Control.Monad (when)
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import Data.Byteable (toBytes)
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import Data.Git
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import Data.Git.Harder
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import Data.Text (Text)
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import Data.Text.Encoding (decodeUtf8With)
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import Data.Text.Encoding.Error (lenientDecode)
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import System.Directory.Tree
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import qualified Data.ByteString as B (ByteString, writeFile)
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import qualified Data.ByteString.Lazy as BL (ByteString)
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initialRepoTree :: FileName -> DirTree B.ByteString
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initialRepoTree repo =
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Dir repo
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[ Dir "branches" []
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, File "config"
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"[core]\n\
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\ repositoryformatversion = 0\n\
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\ filemode = true\n\
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\ bare = true"
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, File "description"
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"Unnamed repository; edit this file to name the repository."
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, File "HEAD" "ref: refs/heads/master"
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, Dir "hooks" []
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, Dir "info"
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[ File "exclude" ""
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]
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, Dir "objects"
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[ Dir "info" []
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, Dir "pack" []
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]
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, Dir "refs"
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[ Dir "heads" []
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, Dir "tags" []
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]
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]
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-- | initialize a new bare repository at a specific location.
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--
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-- Currently in the @hit@ package, i.e. version 0.6.3, the initRepo function
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-- creates a directory which the git executable doesn't recognize as a git
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-- repository. The version here creates a properly initialized repo.
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createRepo
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:: FilePath
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-- ^ Parent directory which already exists
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-> String
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-- ^ Name of new repo, i.e. new directory to create under the parent
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-> IO ()
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createRepo path name = do
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let tree = path :/ initialRepoTree name
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result <- writeDirectoryWith B.writeFile tree
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let errs = failures $ dirTree result
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when (not . null $ errs) $ error $ show errs
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data EntObjType = EntObjBlob | EntObjTree
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type TreeRows = [(ModePerm, ObjId, Text, EntObjType)]
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data PathView
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= RootView TreeRows
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| TreeView Text ObjId TreeRows
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| BlobView Text ObjId BL.ByteString
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viewPath :: Git -> Tree -> EntPath -> IO PathView
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viewPath git root path = do
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let toEnt False = EntObjBlob
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toEnt True = EntObjTree
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toText = decodeUtf8With lenientDecode . toBytes
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adapt (perm, oid, name, isTree) =
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(perm, oid, toText name, toEnt isTree)
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mkRows t = map adapt <$> viewTree git t
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mno <- resolveTreePath git root path
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case mno of
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Nothing -> RootView <$> mkRows root
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Just (name, oid) -> do
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let nameT = toText name
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target <- getEntryObject_ git oid
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case target of
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Left blob -> return $ BlobView nameT oid (blobGetContent blob)
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Right tree -> TreeView nameT oid <$> mkRows tree
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