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Re: [RFC] Final approach for issue #3702 (case-only renames on Windows)?

From: Johan Corveleyn <jcorvel_at_gmail.com>
Date: Sun, 29 May 2011 08:43:03 +0200

On Tue, May 24, 2011 at 11:02 AM, Johan Corveleyn <jcorvel_at_gmail.com> wrote:
> 1) Rev svn_client_args_to_target_array to take an argument "is_move".
> That's really the only case where something special needs to happen.
> Something like this:
> if (is_move && input_targets->nelts == 2
> && strcmp(original_dest_target, true_dest_target) != 0
> && strcmp(true_src_target, true_dest_target) == 0)
> /* Case-only rename on Windows.
> Use original_dest_target instead of true_dest_target */
> 2) Rev svn_client_args_to_target_array to simple always return the
> original target list, as well as the truepath converted ones. Then let
> move_cmd.c figure it out (i.e. implement the above logic).
> 3) Leave svn_client_args_to_target_array alone, and just re-implement
> (copy-paste) the logic to create the 'master array of targets' inside
> move_cmd.c (combining the targets from apr_getopt plus any extra
> targets (--targets)), so it can do all that it needs itself...

Sooo, I still haven't seen a clear preference for one of the
approaches I suggested. To rephrase:

1) Push more information into svn_client_args_to_target_array, so it
knows when to undo truepath conversion (i.e. a flag 'is_move', or if
that's too specific let's call it
'avoid_dual_target_truepath_collision' or
'keep_dest_origpath_on_singlesource_truepath_collision' or something,
because that's essentially what it does)

2) Let svn_client_args_to_target_array return more information, i.e.
the original paths (it has this information already), so move_cmd.c
can use this to undo the truepath conversion if needed. All other
callers of svn_client_args_to_target_array would just drop this
information on the floor, because they don't need it (alternatively,
it probably makes sense to make the output parameter optional (NULL if
it's not needed)).

3) Re-implement part of svn_client_args_to_target_array inside
move_cmd.c, so it can re-fetch the original paths when it needs them.

I personally prefer 2 (with an optional output parameter). Other
opinions? More ideas?

Received on 2011-05-29 08:44:01 CEST

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