git-annex/Command/Copy.hs
Joey Hess 12460fcea6
make --batch honor matching options
When --batch is used with matching options like --in, --metadata, etc, only
operate on the provided files when they match those options. Otherwise, a
blank line is output in the batch protocol.

Affected commands: find, add, whereis, drop, copy, move, get

In the case of find, the documentation for --batch already said it honored
the matching options. The docs for the rest didn't, but it makes sense to
have them honor them. While this is a behavior change, why specify the
matching options with --batch if you didn't want them to apply?

Note that the batch output for all of the affected commands could
already output a blank line in other cases, so batch users should
already be prepared to deal with it.

git-annex metadata didn't seem worth making support the matching options,
since all it does is output metadata or set metadata, the use cases for
using it in combination with the martching options seem small. Made it
refuse to run when they're combined, leaving open the possibility for later
support if a use case develops.

This commit was sponsored by Brett Eisenberg on Patreon.
2018-08-08 12:07:06 -04:00

74 lines
2.2 KiB
Haskell

{- git-annex command
-
- Copyright 2010 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Copy where
import Command
import qualified Command.Move
import qualified Remote
import Annex.Wanted
import Annex.NumCopies
cmd :: Command
cmd = withGlobalOptions [jobsOption, jsonOptions, jsonProgressOption, annexedMatchingOptions] $
command "copy" SectionCommon
"copy content of files to/from another repository"
paramPaths (seek <--< optParser)
data CopyOptions = CopyOptions
{ copyFiles :: CmdParams
, fromToOptions :: FromToHereOptions
, keyOptions :: Maybe KeyOptions
, autoMode :: Bool
, batchOption :: BatchMode
}
optParser :: CmdParamsDesc -> Parser CopyOptions
optParser desc = CopyOptions
<$> cmdParams desc
<*> parseFromToHereOptions
<*> optional (parseKeyOptions <|> parseFailedTransfersOption)
<*> parseAutoOption
<*> parseBatchOption
instance DeferredParseClass CopyOptions where
finishParse v = CopyOptions
<$> pure (copyFiles v)
<*> finishParse (fromToOptions v)
<*> pure (keyOptions v)
<*> pure (autoMode v)
<*> pure (batchOption v)
seek :: CopyOptions -> CommandSeek
seek o = allowConcurrentOutput $ do
let go = whenAnnexed $ start o
case batchOption o of
Batch -> batchFilesMatching go
NoBatch -> withKeyOptions
(keyOptions o) (autoMode o)
(Command.Move.startKey (fromToOptions o) Command.Move.RemoveNever)
(withFilesInGit go)
=<< workTreeItems (copyFiles o)
{- A copy is just a move that does not delete the source file.
- However, auto mode avoids unnecessary copies, and avoids getting or
- sending non-preferred content. -}
start :: CopyOptions -> FilePath -> Key -> CommandStart
start o file key = stopUnless shouldCopy $
Command.Move.start (fromToOptions o) Command.Move.RemoveNever file key
where
shouldCopy
| autoMode o = want <||> numCopiesCheck file key (<)
| otherwise = return True
want = case fromToOptions o of
Right (ToRemote dest) ->
(Remote.uuid <$> getParsed dest) >>= checkwantsend
Right (FromRemote _) -> checkwantget
Left ToHere -> checkwantget
checkwantsend = wantSend False (Just key) (AssociatedFile (Just file))
checkwantget = wantGet False (Just key) (AssociatedFile (Just file))