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Re: repository conversion on windows fails / binary file

From: Branko Čibej <brane_at_xbc.nu>
Date: 2002-06-11 22:18:51 CEST

Branko Čibej wrote:

> Ben Collins-Sussman wrote:
>> Hontvari Jozsef <hontvari@solware.com> writes:
>>> From: "Ben Collins-Sussman"
>>>> Is there any way we can look at the dumpfile so we can reproduce?
>>> I can reproduce it easily, I make a new repository with the current
>>> windows
>>> binary, r2140, svn import a single file, dump, delete the
>>> repository, create
>>> another repository, svnadmin load, and it fails with a similar message.
>>> I have attached the example dump file from the above process.
>> I just loaded the dumpfile into my emacs, and noticed that the whole
>> dumpfile is CRLF terminated. I bet that's screwing up the 'svnadmin
>> load' parser -- I think it's looking for '\n' specifically at the end
>> of each line.
>> Hmmm, I'm not sure I understand why 'svnadmin dump' is producing a
>> CRLF file at all, I need to examine... maybe my hypothesis is wrong.
> They're CRLF-terminated because we use svn_stream_from_stdio to open
> the dumper and loader streams. The stdio streams are translated by
> default on Windows.
> I don't know what happens during the load (LF <-> CRLF translation
> should be reversible), but I suspect that the the translated stdio
> thinks it has an EOF when it sees a ^Z in the input stream, which
> interestingly enough occurs very near the beginning of a Word document.
> Is that broken? Well, it's only true of translated streams, and if you
> write binary data to a stream that believes it's text, you get what
> you deserve.
> The solution is to reopen the streams in binary mode, obviously. I
> wonder how you do that in APR.
BTW, I can dump and reload a repo that only contains text files. And I
just confirmed my suspicions by adding a ^Z in a file in the wrong place.

(And I have a couple of questions about the dump format:

    * Where are the checksums? I thought there would be checksums ...
    * Why are we dumping timestamps in the old, weird format that we're
      about to forget how to parse?)

Brane Čibej   <brane_at_xbc.nu>   http://www.xbc.nu/brane/
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Received on Tue Jun 11 22:19:22 2002

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