dbc_parser.py 文件源码

def _parse_attribute(self, attribute_str):
        """Parses a attribute string and updates the CANBus

        Args:
            attribute_str: String with attribute
        """
        pattern  = 'BA_\s+"(?P<attr_name>\S+)"\s*(?P<node>BU_)?(?P<msg>BO_)?(?P<sig>SG_)?\s*'
        pattern += '(?P<can_id>\d*)?\s*(?P<name>\S*)?\s+(?P<value>\S+)\s*;'
        reg = re.search(pattern, attribute_str)

        can_object = self._can_network
        if reg.group('node'):
            can_object = self._can_network.nodes[reg.group('name')]
        elif reg.group('msg'):
            can_object = self._can_network.get_message(int(reg.group('can_id')))
        elif reg.group('sig'):
            can_object = self._can_network.get_signal(int(reg.group('can_id')), reg.group('name'))

        cad = self._can_network.attributes.definitions[reg.group('attr_name')]
        can_object.attributes.add(CANAttribute(cad, value=self._parse_attribute_value(cad, reg.group('value'))))