analyzer.py 文件源码

 复制代码def __get_param(self, source, name, default=None, message=None):
        """Extract a specific parameter from given source.
        :param source: Python dict to search through
        :param name: Name of the parameter to get. JSON-like syntax, e.g. `config.username` at first, but in recursive
                     calls a list
        :param default: Default value, if not found. Default: None
        :param message: Error message. If given and name not found, exit with error. Default: None"""

        if isinstance(name, str):
            name = name.split('.')

        if len(name) == 0:
            # The name is empty, return the source content
            return source
        else:
            new_source = source.get(name[0])
            if new_source is not None:
                return self.__get_param(new_source, name[1:], default, message)
            else:
                if message is not None:
                    self.error(message)
                return default