git-annex/Command/Unlock.hs
Joey Hess a2ba701056 started converting to use optparse-applicative
This is a work in progress. It compiles and is able to do basic command
dispatch, including git autocorrection, while using optparse-applicative
for the core commandline parsing.

* Many commands are temporarily disabled before conversion.
* Options are not wired in yet.
* cmdnorepo actions don't work yet.

Also, removed the [Command] list, which was only used in one place.
2015-07-08 13:36:25 -04:00

67 lines
1.6 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Unlock where
import Common.Annex
import Command
import Annex.Content
import Annex.CatFile
import Utility.CopyFile
cmd :: Command
cmd = mkcmd "unlock" "unlock files for modification"
editcmd :: Command
editcmd = mkcmd "edit" "same as unlock"
mkcmd :: String -> String -> Command
mkcmd n = notDirect . withOptions annexedMatchingOptions
. command n paramPaths seek SectionCommon
seek :: CommandSeek
seek = withFilesInGit $ whenAnnexed start
{- The unlock subcommand replaces the symlink with a copy of the file's
- content. -}
start :: FilePath -> Key -> CommandStart
start file key = do
showStart "unlock" file
ifM (inAnnex key)
( ifM (isJust <$> catKeyFileHEAD file)
( next $ perform file key
, do
warning "this has not yet been committed to git; cannot unlock it"
next $ next $ return False
)
, do
warning "content not present; cannot unlock"
next $ next $ return False
)
perform :: FilePath -> Key -> CommandPerform
perform dest key = ifM (checkDiskSpace Nothing key 0 True)
( do
src <- calcRepo $ gitAnnexLocation key
tmpdest <- fromRepo $ gitAnnexTmpObjectLocation key
liftIO $ createDirectoryIfMissing True (parentDir tmpdest)
showAction "copying"
ifM (liftIO $ copyFileExternal CopyAllMetaData src tmpdest)
( do
liftIO $ do
removeFile dest
moveFile tmpdest dest
thawContent dest
next $ return True
, do
warning "copy failed!"
next $ return False
)
, do
warning "not enough disk space to copy file"
next $ return False
)