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# Purpose: define dxf attributes
# Created: 21.07.2012, taken from my ezdxf project
# Copyright (C) 2012, Manfred Moitzi
# License: MIT License
from __future__ import unicode_literals
__author__ = "mozman <mozman@gmx.at>"
from collections import namedtuple
from .const import XTYPE_NONE
def DXFAttr(code, xtype=XTYPE_NONE):
# assert type(xtype) is int
return _DXFAttr(code, xtype)
_DXFAttr = namedtuple('DXFAttr', 'code xtype')
DXFAttr3 = namedtuple('DXFAttr3', 'code xtype subclass')
DefSubclass = namedtuple('DefSubclass', 'name attribs')
class DXFAttributes(object):
def __init__(self, *subclassdefs):
self._subclasses = []
self._attribs = {}
for subclass in subclassdefs:
self.add_subclass(subclass)
def add_subclass(self, subclass):
subclass_index = len(self._subclasses)
self._subclasses.append(subclass)
self._add_subclass_attribs(subclass, subclass_index)
def _add_subclass_attribs(self, subclass, subclass_index):
for name, dxfattrib in subclass.attribs.items():
self._attribs[name] = DXFAttr3(dxfattrib.code, dxfattrib.xtype, subclass_index)
def __getitem__(self, name):
return self._attribs[name]
def __contains__(self, name):
return name in self._attribs
def keys(self):
return iter(self._attribs.keys())
def subclasses(self):
return iter(self._subclasses)
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