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src/subversion/subversion/libsvn_subr/target.c  view on Meta::CPAN

      for (i = 0; i < abs_targets->nelts; ++i)
        {
          const char *rel_item = APR_ARRAY_IDX(abs_targets, i, const char *);

          /* Skip this if it's been removed. */
          if (removed[i])
            continue;

          /* If a common prefix was found, condensed_targets are given
             relative to that prefix.  */
          if (basedir_len > 0)
            {
              /* Only advance our pointer past a path separator if
                 REL_ITEM isn't the same as *PCOMMON.

                 If *PCOMMON is a root path, basedir_len will already
                 include the closing '/', so never advance the pointer
                 here.
                 */
              rel_item += basedir_len;
              if (rel_item[0] &&
                  ! svn_dirent_is_root(*pcommon, basedir_len))
                rel_item++;
            }

          APR_ARRAY_PUSH(*pcondensed_targets, const char *)
            = apr_pstrdup(pool, rel_item);
        }
    }

  return SVN_NO_ERROR;
}


svn_error_t *
svn_path_remove_redundancies(apr_array_header_t **pcondensed_targets,
                             const apr_array_header_t *targets,
                             apr_pool_t *pool)
{
  apr_pool_t *temp_pool;
  apr_array_header_t *abs_targets;
  apr_array_header_t *rel_targets;
  int i;

  if ((targets->nelts <= 0) || (! pcondensed_targets))
    {
      /* No targets or no place to store our work means this function
         really has nothing to do. */
      if (pcondensed_targets)
        *pcondensed_targets = NULL;
      return SVN_NO_ERROR;
    }

  /* Initialize our temporary pool. */
  temp_pool = svn_pool_create(pool);

  /* Create our list of absolute paths for our "keepers" */
  abs_targets = apr_array_make(temp_pool, targets->nelts,
                               sizeof(const char *));

  /* Create our list of untainted paths for our "keepers" */
  rel_targets = apr_array_make(pool, targets->nelts,
                               sizeof(const char *));

  /* For each target in our list we do the following:

     1.  Calculate its absolute path (ABS_PATH).
     2.  See if any of the keepers in ABS_TARGETS is a parent of, or
         is the same path as, ABS_PATH.  If so, we ignore this
         target.  If not, however, add this target's absolute path to
         ABS_TARGETS and its original path to REL_TARGETS.
  */
  for (i = 0; i < targets->nelts; i++)
    {
      const char *rel_path = APR_ARRAY_IDX(targets, i, const char *);
      const char *abs_path;
      int j;
      svn_boolean_t is_url, keep_me;

      /* Get the absolute path for this target. */
      is_url = svn_path_is_url(rel_path);
      if (is_url)
        abs_path = rel_path;
      else
        SVN_ERR(svn_dirent_get_absolute(&abs_path, rel_path, temp_pool));

      /* For each keeper in ABS_TARGETS, see if this target is the
         same as or a child of that keeper. */
      keep_me = TRUE;
      for (j = 0; j < abs_targets->nelts; j++)
        {
          const char *keeper = APR_ARRAY_IDX(abs_targets, j, const char *);
          svn_boolean_t keeper_is_url = svn_path_is_url(keeper);
          const char *child_relpath;

          /* If KEEPER hasn't the same is-url-ness as ABS_PATH, we
             know they aren't equal and that one isn't the child of
             the other. */
          if (is_url != keeper_is_url)
            continue;

          /* Quit here if this path is the same as or a child of one of the
             keepers. */
          if (is_url)
            child_relpath = svn_uri_skip_ancestor(keeper, abs_path, temp_pool);
          else
            child_relpath = svn_dirent_skip_ancestor(keeper, abs_path);
          if (child_relpath)
            {
              keep_me = FALSE;
              break;
            }
        }

      /* If this is a new keeper, add its absolute path to ABS_TARGETS
         and its original path to REL_TARGETS. */
      if (keep_me)
        {
          APR_ARRAY_PUSH(abs_targets, const char *) = abs_path;
          APR_ARRAY_PUSH(rel_targets, const char *) = rel_path;
        }
    }

  /* Destroy our temporary pool. */
  svn_pool_destroy(temp_pool);

  /* Make sure we return the list of untainted keeper paths. */
  *pcondensed_targets = rel_targets;

  return SVN_NO_ERROR;
}