io_import_dxf/dxfgrabber/defaultchunk.py

   1 # SPDX-License-Identifier: MIT
   2 # Copyright 2012 Manfred Moitzi
   3
   4 # Purpose: handle default chunk
   5 # Created: 21.07.2012, taken from my ezdxf project
   6 from __future__ import unicode_literals
   7 __author__ = "mozman <mozman@gmx.at>"
   8
   9 from .tags import Tags, DXFTag
  10
  11
  12 class DefaultChunk(object):
  13     def __init__(self, tags):
  14         assert isinstance(tags, Tags)
  15         self.tags = tags
  16
  17     @staticmethod
  18     def from_tags(tags, drawing):
  19         return DefaultChunk(tags)
  20
  21     @property
  22     def name(self):
  23         return self.tags[1].value.lower()
  24
  25
  26 def iterchunks(tagreader, stoptag='EOF', endofchunk='ENDSEC'):
  27     while True:
  28         tag = next(tagreader)
  29         if tag == DXFTag(0, stoptag):
  30             return
  31
  32         tags = Tags([tag])
  33         append = tags.append
  34         end_tag = DXFTag(0, endofchunk)
  35         while tag != end_tag:
  36             tag = next(tagreader)
  37             append(tag)
  38         yield tags