On Jul 5, 2005, at 9:47 PM, Jonathan Gilbert wrote:
> At 05:20 PM 05/07/2005 -0500, Sussman wrote:
>
>> Several folks have asked for this feature before, but the motivation
>> has always been, "please convert this tree into a working-copy,
>> because I don't want to re-download 17 gigs of data."
>>
>> Your patch doesn't avoid downloading at all; it just prevents the
>> downloaded text-base from being copied on top of the pre-existing
>> working file.
>>
>
> Well, basically, to avoid downloading existing content, the file's
> props
> would need to be checked to determine what, if any, translation is in
> effect, and then the content would need to be hashed on the other
> side of a
> detranslation stream and the result compared against the hash from the
> server. Does this sound about right? I don't think this would be
> impossible
> to do. However, it would require extensive plumbing much earlier in
> the
> request lifetime. Currently, the props are only guaranteed to have
> been
> transferred at the 'close-file' handler, by which time the file's
> contents
> have already been transferred from the server.
>
> The client would have to retrieve a list of files (w/ their hashes)
> from
> the server as a separate step, and compare that with what was
> already on
> the local filesystem.
>
> Am I missing anything?
>
That sounds about right, yep.
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Received on Wed Jul 6 04:59:24 2005