I have committed an implementation in http://svn.apache.org/r1857624 , using
Evgeny's new libsvn_fs ioctl API.
It is feature-complete (old and new FSFS formats, revs and revprops, packed and
unpacked.
The CLI is:
$ svnadmin rev-size /path/to/repo -r1
1337 bytes in revision 1
plus a 'quiet' option.
There are a couple of opportunities for optimization marked in the code:
1. for the size of an unpacked rev-file, we unnecessarily read the indexes
2. for the size of packed revprops, we unnecessarily read the props
--
- Julian
