From: Nick Terrell <nickrterrell@gmail.com>
Date: Thu, 15 Nov 2018 02:43:12 +0000 (-0800)
Subject: Merge pull request #1416 from terrelln/rsync
X-Git-Tag: v1.3.8~46
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f15f1bfefb218a29f777493302be892a89dfe1be;p=thirdparty%2Fzstd.git

Merge pull request #1416 from terrelln/rsync

- Factor out LDM's hash function for reuse
- Add rsyncable mode to zstdmt and expose it via the advanced API
- Fix `-B`/`--block-size` to actually set the job size
- Add rsyncable tests to `zstreamtest` and `playTests.sh`

Tested by:

```
> cat A.100MB B.100MB C.100MB D.100MB E.100MB | zstd --rsyncable -fo src/file.zst
/*stdin*\            : 48.22%   (524288000 => 252837782 bytes, src/file.zst)
> rsync -rc --stats src devbigvm:/data/users/terrelln/rsync-test
Total bytes sent: 252868779
total size is 252837782  speedup is 1.00
> echo test > test
> cat test A.100MB test B.100MB test C.100MB test D.100MB test E.100MB | zstd --rsyncable -fo src/file.zst
/*stdin*\            : 48.23%   (524288025 => 252838025 bytes, src/unicorn.tar.zst)
> rsync -rc --stats src devbigvm:/data/users/terrelln/rsync-test
Total bytes sent: 4605696
total size is 252838025  speedup is 53.60
```

Close #1155.
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f15f1bfefb218a29f777493302be892a89dfe1be