Refactor sync/copy/move
* Don't load the src listing unless doing a sync and --delete-before
* Don't load the dst listing if doing copy/move and --no-traverse is set
`rclone --no-traverse copy src dst` now won't load either of the
listings into memory so will use the minimum amount of memory.
This change will reduce the amount of memory rclone uses dramatically
too as in normal operations (copy without --notraverse or sync) as it
no longer loads the source file listing into memory at all.
Fixes#8Fixes#544Fixes#546
If remote:path points to a file make NewFs return a sentinel error
fs.ErrorIsFile and an Fs which points to the parent.
Use this to remove the LimitedFs and just add this file to the
--files-from list.
This means that server side operations can be used also.
Fixes#518Fixes#545
This should fix duplicate files on drive and 409 errors on
amazonclouddrive however it will slow down the upload slightly as
another roundtrip will be needed.
None of the other Fses needed adjusting.
Fixes#483
Gives more accurate error propagation, control of depth of recursion
and short circuit recursion where possible.
Most of the the heavy lifting is done in the "fs" package, making file
system implementations a bit simpler.
This commit contains some code originally by Klaus Post.
Fixes#316
* Now removes identical copies without asking
* Now obeys `--dry-run`
* Implement `--dedupe-mode` for non interactive running
* `--dedupe-mode interactive` - interactive the default.
* `--dedupe-mode skip` - removes identical files then skips anything left.
* `--dedupe-mode first` - removes identical files then keeps the first one.
* `--dedupe-mode newest` - removes identical files then keeps the newest one.
* `--dedupe-mode oldest` - removes identical files then keeps the oldest one.
* `--dedupe-mode rename` - removes identical files then renames the rest to be different.
* Add tests which will only run on Google Drive.
