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From Keath Milligan <>
Subject Re: Creating a pre-commit hook for copy operations
Date Fri, 15 Aug 2014 18:24:18 GMT
Thanks, Eric. svnlook gave me the clue I needed. I look at its source and
found that I had been on the right track using ChangeCollector and replay2,
but there was an error in my code. Once I got that fixed, my hook worked.

On Fri, Aug 15, 2014 at 12:59 PM, Eric Johnson <> wrote:

> I had a similar problem of needing to look for copies. Rather than deal
> with the complexity of the API, I simply relied on the "svnlook" command
> output.
> Specifically, I used "svnlook --transaction ${tx_id} changed --copy-info",
> and parsed the result.
> Eric
> On Fri, Aug 15, 2014 at 7:15 AM, Keath Milligan <>
> wrote:
>> We're using Subversion 1.8.3 and need to create a pre-commit hook that
>> checks copy operations (specifically branch creation) for certain
>> conditions. Specifically, we want to be able to prevent users from creating
>> branches in the wrong locations and similar errors.
>> To accomplish this, we need to know the source and destination paths of
>> the copy operation. Our current pre-commit hook (written in Python) uses a
>> delta.Editor subclass to check other things. We tried overriding the
>> add_directory method, which has a copyfrom_path argument -- this would have
>> been perfect, but this argument is always empty.
>> We also tried using the repos.Changecollector and repos.replay2, but this
>> doesn't seem to give us information about the pending commit -- perhaps we
>> are doing it wrong.
>> Any suggestion would be much appreciated.
>> Thanks

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