move, copy: Support --batch.

CHANGELOG

@@ -10,6 +10,7 @@ git-annex (6.20170521) UNRELEASED; urgency=medium
   * test: Avoid most situations involving failure to delete test
     directories, by forking a worker process and only deleting the test
     directory once it exits.
+  * move, copy: Support --batch.
 
  -- Joey Hess <id@joeyh.name>  Sat, 17 Jun 2017 13:02:24 -0400
 

Command/Copy.hs

@@ -35,11 +35,15 @@ instance DeferredParseClass CopyOptions where
 		<*> pure (autoMode v)
 
 seek :: CopyOptions -> CommandSeek
-seek o = allowConcurrentOutput $
-	withKeyOptions (Command.Move.keyOptions $ moveOptions o) (autoMode o)
-		(Command.Move.startKey (moveOptions o) False)
-		(withFilesInGit $ whenAnnexed $ start o)
-		(Command.Move.moveFiles $ moveOptions o)
+seek o = allowConcurrentOutput $ do
+	let go = whenAnnexed $ start o
+	case Command.Move.batchOption (moveOptions o) of
+		Batch -> batchInput Right (batchCommandAction . go)
+		NoBatch -> withKeyOptions
+			(Command.Move.keyOptions $ moveOptions o) (autoMode o)
+			(Command.Move.startKey (moveOptions o) False)
+			(withFilesInGit go)
+			(Command.Move.moveFiles $ moveOptions o)
 
 {- A copy is just a move that does not delete the source file.
  - However, auto mode avoids unnecessary copies, and avoids getting or

Command/Move.hs

@@ -29,6 +29,7 @@ data MoveOptions = MoveOptions
 	{ moveFiles :: CmdParams
 	, fromToOptions :: Either ToHere FromToOptions
 	, keyOptions :: Maybe KeyOptions
+	, batchOption :: BatchMode
 	}
 
 data ToHere = ToHere
@@ -38,6 +39,7 @@ optParser desc = MoveOptions
 	<$> cmdParams desc
 	<*> (parsefrom <|> parseto)
 	<*> optional (parseKeyOptions <|> parseFailedTransfersOption)
+	<*> parseBatchOption
   where
 	parsefrom = Right . FromRemote . parseRemoteOption <$> parseFromOption
 	parseto = herespecialcase <$> parseToOption
@@ -51,13 +53,17 @@ instance DeferredParseClass MoveOptions where
 		<$> pure (moveFiles v)
 		<*> either (pure . Left) (Right <$$> finishParse) (fromToOptions v)
 		<*> pure (keyOptions v)
+		<*> pure (batchOption v)
 
 seek :: MoveOptions -> CommandSeek
-seek o = allowConcurrentOutput $ 
-	withKeyOptions (keyOptions o) False
-		(startKey o True)
-		(withFilesInGit $ whenAnnexed $ start o True)
-		(moveFiles o)
+seek o = allowConcurrentOutput $ do
+	let go = whenAnnexed $ start o True
+	case batchOption o of
+		Batch -> batchInput Right (batchCommandAction . go)
+		NoBatch -> withKeyOptions (keyOptions o) False
+			(startKey o True)
+			(withFilesInGit go)
+			(moveFiles o)
 
 start :: MoveOptions -> Bool -> FilePath -> Key -> CommandStart
 start o move f k = start' o move afile k (mkActionItem afile)

doc/git-annex-copy.mdwn

@@ -75,6 +75,19 @@ Copies the content of files from or to another remote.
   The [[git-annex-matching-options]](1)
   can be used to specify files to copy.
 
+* `--batch`
+
+  Enables batch mode, in which lines containing names of files to copy
+  are read from stdin.
+
+  As each specified file is processed, the usual progress output is
+  displayed. If a file's content does not need to be copied or it
+  is not an annexed file, a blank line is output in response instead.
+
+  Since the usual output while copying a file is verbose and not
+  machine-parseable, you may want to use --json in combination with
+  --batch.
+
 * `--json`
 
   Enable JSON output. This is intended to be parsed by programs that use

doc/git-annex-move.mdwn

@@ -70,6 +70,19 @@ Moves the content of files from or to another remote.
   The [[git-annex-matching-options]](1)
   can be used to specify files to move.
 
+* `--batch`
+
+  Enables batch mode, in which lines containing names of files to move
+  are read from stdin.
+
+  As each specified file is processed, the usual progress output is
+  displayed. If a file's content does not need to be moved or it
+  is not an annexed file, a blank line is output in response instead.
+
+  Since the usual output while moving a file is verbose and not
+  machine-parseable, you may want to use --json in combination with
+  --batch.
+
 * `--json`
 
   Enable JSON output. This is intended to be parsed by programs that use

doc/todo/--batch_for_copy.mdwn

@@ -7,3 +7,5 @@ nothing
 """]]
 
 [!meta author=yoh]
+
+> [[done]] for copy and move --[[Joey]]