# --- define helper to name termios settings list fields 
from collections import OrderedDict
class DictRecord(OrderedDict):
    """
    Wrapper that transforms list to OrderedDict adding names to
    fields and enabling attribute access. Subclass and set names
    in class.NAMES attribute.

	 class Point(DictRecord):
	     NAMES = ['x', 'y']

	 p = Point( [1, 2] )
	 p.x = 4
	 p.values()

    """
    NAMES = []

    def __init__(self, somelist=None):
	if len(somelist) != len(self.NAMES):
	    raise ValueError('List length doesn\'t match name list')
	tuplist = zip(self.NAMES, somelist)
	super(DictRecord, self).__init__(tuplist)

    def __getattr__(self, name):
	if name not in self.NAMES:
	    raise AttributeError('No such field \'%s\'' % name)
	else:
	    return self.__getitem__(name)

    def __setattr__(self, name, value):
	if name.startswith('_OrderedDict'):
	    return OrderedDict.__setattr__(self, name, value)
	elif name in self.NAMES:
	    return self.__setitem__(name, value)
	else:
	    raise AttributeError('No such field \'%s\'' % name)

class TermiosState(DictRecord):
    NAMES = ['iflag', 'oflag', 'cflag', 'lflag', 'ispeed', 'ospeed', 'cc']