Getting immediate previous revision of a file

[alexloh]

I have a revision r where a file is changed. I want to take the previous version of this file and compare it (my own compare, not SVN diff). But the previous version of the file is not in revision r-1, it could have been unchanged for many revisions, or some revisions can even be missing in the current trunk directory. Is there any way for me to get the verision of a file just before a specific revision?

I saw a very similar post at http://www.nabble.com/How-to-show-changes-of-one-file-in-specific-revision-to21301533.html#a21365215 and http://www.nabble.com/How-to-get-correct-path-of-file-between-revisions-to21305208.html#a21365191, but when I used the suggested solution (LogClient with ISVNLogEntryHandler) I still face the same problem: exception whenever the logclient hits a revision where the file is not changed.

In any case, is there an easier way to do this than using the logclient? I only want to find the one copy of this one file just before the specified revision; the doLog() function appears to iterate through the entire history of the file (I don't see a way to make it stop after its job is done), which is very slow for large repositories.

[alexloh]

ED: I am now using SVNRepository's checkPath() and backtracking along revisions. Seems to solve my problem. Previously got sidetracked by LogClient.

alexloh wrote:

I have a revision r where a file is changed. I want to take the previous version of this file and compare it (my own compare, not SVN diff). But the previous version of the file is not in revision r-1, it could have been unchanged for many revisions, or some revisions can even be missing in the current trunk directory. Is there any way for me to get the verision of a file just before a specific revision?

I saw a very similar post at http://www.nabble.com/How-to-show-changes-of-one-file-in-specific-revision-to21301533.html#a21365215 and http://www.nabble.com/How-to-get-correct-path-of-file-between-revisions-to21305208.html#a21365191, but when I used the suggested solution (LogClient with ISVNLogEntryHandler) I still face the same problem: exception whenever the logclient hits a revision where the file is not changed.

In any case, is there an easier way to do this than using the logclient? I only want to find the one copy of this one file just before the specified revision; the doLog() function appears to iterate through the entire history of the file (I don't see a way to make it stop after its job is done), which is very slow for large repositories.

[Dale Anson]

I think you were on the right track with SVNLogClient.  Use the doLog
method and set the "limit" parameter to 2.  Then your LogEntryHandler
will only get the last 2 revisions back, assuming, of course, that the
file is not brand new and actually has 2 revisions.

Dale


alexloh wrote:

> ED: I am now using SVNRepository's checkPath() and backtracking along
> revisions. Seems to solve my problem. Previously got sidetracked by
> LogClient.
>
>
>
> alexloh wrote:
>  
>> I have a revision r where a file is changed. I want to take the previous
>> version of this file and compare it (my own compare, not SVN diff). But
>> the previous version of the file is not in revision r-1, it could have
>> been unchanged for many revisions, or some revisions can even be missing
>> in the current trunk directory. Is there any way for me to get the
>> verision of a file just before a specific revision?
>>
>> I saw a very similar post at
>> http://www.nabble.com/How-to-show-changes-of-one-file-in-specific-revision-to21301533.html#a21365215
>> and
>> http://www.nabble.com/How-to-get-correct-path-of-file-between-revisions-to21305208.html#a21365191,
>> but when I used the suggested solution (LogClient with
>> ISVNLogEntryHandler) I still face the same problem: exception whenever the
>> logclient hits a revision where the file is not changed.
>>
>> In any case, is there an easier way to do this than using the logclient? I
>> only want to find the one copy of this one file just before the specified
>> revision; the doLog() function appears to iterate through the entire
>> history of the file (I don't see a way to make it stop after its job is
>> done), which is very slow for large repositories.
>>
>>    
>
>  

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