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Re: [PATCH 6/7] Switch path canonicalization to use the SVN API.

From
Michael G Schwern <schwern@pobox.com>
Date
Jul 28, 2012, 19:07 UTC
Message-ID
<5014387C.50903@pobox.com>
In-Reply-To
<20120728135502.GC9715@burratino>
On 2012.7.28 6:55 AM, Jonathan Nieder wrote:
Show 23 quoted lines
> Michael G. Schwern wrote:
>> --- a/perl/Git/SVN/Utils.pm
>> +++ b/perl/Git/SVN/Utils.pm
>> @@ -86,6 +86,27 @@ sub _collapse_dotdot {
>>  
>>  
>>  sub canonicalize_path {
>> +	my $path = shift;
>> +
>> +	# The 1.7 way to do it
>> +	if ( defined &SVN::_Core::svn_dirent_canonicalize ) {
>> +		$path = _collapse_dotdot($path);
>> +		return SVN::_Core::svn_dirent_canonicalize($path);
>> +	}
>> +	# The 1.6 way to do it
>> +	elsif ( defined &SVN::_Core::svn_path_canonicalize ) {
>> +		$path = _collapse_dotdot($path);
>> +		return SVN::_Core::svn_path_canonicalize($path);
>> +	}
>> +	# No SVN API canonicalization is available, do it ourselves
>> +	else {
> 
> When would this "else" case trip?

When svn_path_canonicalize() does not exist in the SVN API, presumably because their SVN is too old.

> Would it be safe to make it
> return an error message, or even to do something like the following?
I don't know what your SVN backwards compat requirements are, or when
svn_path_canonicalize() appears in the API, so I left it as is.  git-svn's
home rolled path canonicalization worked and its no work to leave it working.
 No reason to break it IMO.
Show 12 quoted lines
> 	sub canonicalize_path {
> 		my $path = shift;
> 		$path = _collapse_dotdot($path);
> 
> 		# Subversion 1.7 split svn_path_canonicalize() into
> 		# svn_dirent_canonicalize() and svn_uri_canonicalize().
> 		if (!defined &SVN::_Core::svn_dirent_canonicalize) {
> 			return SVN::_Core::svn_path_canonicalize($path);
> 		}
> 
> 		return SVN::_Core::svn_dirent_canonicalize($path);
> 	}

As a side note... "If they don't have Mars bar, get me a Twix. Else get me a Mars bar." "If they have a Mars bar, get me one. Else get me a Twix."

-- 
Look at me talking when there's science to do.
When I look out there it makes me glad I'm not you.
I've experiments to be run.
There is research to be done
On the people who are still alive.
    -- Jonathan Coulton, "Still Alive"
Previous: Jonathan NiederNext: Eric Wong
Message 30 of 39 in “Canonicalize the git-svn path & url accessors”
  1. Michael G. SchwernJul 28, 2012
  2. 1/7 Move the canonicalization functions to Git::SVN::UtilsMichael G. Schwern, Jul 28, 2012
  3. 2/7 Change canonicalize_url() to use the SVN 1.7 API when available.Michael G. Schwern, Jul 28, 2012
  4. Jonathan NiederJul 28, 2012
  5. Michael G SchwernJul 28, 2012
  6. Jonathan NiederJul 28, 2012
  7. Michael G SchwernJul 28, 2012
  8. Jonathan NiederJul 28, 2012
  9. Jonathan NiederJul 28, 2012
  10. Michael G SchwernJul 28, 2012
  11. 0/2 Re: [PATCH 2/7] Change canonicalize_url() to use the SVN 1.7 API when available.Jonathan Nieder, Oct 14, 2012
  12. 1/2 git svn: do not overescape URLs (fallback case)Jonathan Nieder, Oct 14, 2012
  13. 2/2 git svn: canonicalize_url(): use svn_path_canonicalize when availableJonathan Nieder, Oct 14, 2012
  14. Eric WongOct 23, 2012
  15. 3/7 Extract, test and enhance the logic to collapse ../foo paths.Michael G. Schwern, Jul 28, 2012
  16. Eric WongJul 30, 2012
  17. Michael G SchwernJul 30, 2012
  18. Jonathan NiederSep 26, 2012
  19. Eric WongSep 26, 2012
  20. Jonathan NiederSep 26, 2012
  21. Eric WongSep 26, 2012
  22. Jonathan NiederSep 26, 2012
  23. Eric WongSep 27, 2012
  24. Jonathan NiederSep 27, 2012
  25. 4/7 Add join_paths() to safely concatenate paths.Michael G. Schwern, Jul 28, 2012
  26. Jonathan NiederSep 26, 2012
  27. 5/7 Remove irrelevant comment.Michael G. Schwern, Jul 28, 2012
  28. 6/7 Switch path canonicalization to use the SVN API.Michael G. Schwern, Jul 28, 2012
  29. Jonathan NiederJul 28, 2012
  30. Michael G SchwernJul 28, 2012
  31. Eric WongJul 30, 2012
  32. Eric WongAug 2, 2012
  33. Michael G SchwernAug 2, 2012
  34. git-svn: keep leading slash when canonicalizing paths (fallback case)Jonathan Nieder, Oct 5, 2012
  35. Eric WongOct 5, 2012
  36. Junio C HamanoOct 6, 2012
  37. 7/7 Make Git::SVN and Git::SVN::Ra canonicalize paths and urls.Michael G. Schwern, Jul 28, 2012
  38. Jonathan NiederJul 28, 2012
  39. Michael G SchwernJul 28, 2012

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