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Re: FS tree walking (was: Re: wcprops)

From: Ben Collins-Sussman <sussman_at_collab.net>
Date: 2002-05-20 23:00:56 CEST

Greg Stein <gstein@lyra.org> writes:

> svn_error_t *
> svn_repos_walk_tree (svn_fs_root_t *root,
> const char *path, /* starting path locn */
> svn_repos_walk_func_t callback,
> void *cb_baton,
> apr_pool_t *pool);
> where you have:
> typedef svn_error_t * (*svn_repos_walk_func_t) (const char *path,
> void *baton,
> apr_pool_t *pool);

I agree with Greg. If we had a nice interface such as the one above,
then I wouldn't need to use dir_delta as a convenience, and things
would be easier to understand.

My code in mod_dav_svn looks like this right now. Not horrible, but
could be simpler:

  if (dst_path) /* this was a 'switch' operation */
      /* send a second embedded <S:resource-walk> tree that contains
         the new vsn-rsc-urls for the switched dir. this walk
         contains essentially nothing but <add> tags. */
      svn_fs_root_t *zero_root;
      svn_fs_revision_root(&zero_root, repos->fs, 0, resource->pool);

      send_xml(&uc, "<S:resource-walk>" DEBUG_CR);

      uc.resource_walk = TRUE;

      /* Compare subtree DST_PATH within a pristine revision to
         revision 0. This should result in nothing but 'add' calls
         to the editor. */
      serr = svn_repos_dir_delta(/* source is revision 0: */
                                 zero_root, "", NULL,
                                 /* target is 'switch' location: */
                                 uc.rev_root, dst_path,
                                 /* re-use the editor */
                                 editor, &uc,
                                 FALSE, /* no text deltas */
                                 TRUE, /* send entryprops */
                                 FALSE, /* no copy history */

      send_xml(&uc, "</S:resource-walk>" DEBUG_CR);

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Received on Mon May 20 23:04:30 2002

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