Get raw object infos (single-shot).

def _get_object_infos(self, path, marker=None,
                          limit=settings.CLOUD_BROWSER_DEFAULT_LIST_LIMIT):
        """Get raw object infos (single-shot)."""
        # Adjust limit to +1 to handle marker object as first result.
        # We can get in to this situation for a marker of "foo", that will
        # still return a 'subdir' object of "foo/" because of the extra
        # slash.
        orig_limit = limit
        limit += 1

        # Enforce maximum object size.
        if limit > RS_MAX_LIST_OBJECTS_LIMIT:
            raise errors.CloudException("Object limit must be less than %s" %
                                        RS_MAX_LIST_OBJECTS_LIMIT)

        def _collapse(infos):
            """Remove duplicate dummy / implied objects."""
            name = None
            for info in infos:
                name = info.get('name', name)
                subdir = info.get('subdir', '').strip(SEP)
                if not name or subdir != name:
                    yield info

        path = path + SEP if path else ''
        object_infos = self.native_container.list_objects_info(
            limit=limit, delimiter=SEP, prefix=path, marker=marker)

        full_query = len(object_infos) == limit
        if object_infos:
            # Check first object for marker match and truncate if so.
            if (marker and
                    object_infos[0].get('subdir', '').strip(SEP) == marker):
                object_infos = object_infos[1:]

            # Collapse subdirs and dummy objects.
            object_infos = list(_collapse(object_infos))

            # Adjust to original limit.
            if len(object_infos) > orig_limit:
                object_infos = object_infos[:orig_limit]

        return object_infos, full_query