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# Purpose: handle header section
# 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 .tags import TagGroups, DXFTag
class HeaderSection(dict):
name = "header"
def __init__(self):
super(HeaderSection, self).__init__()
self._create_default_vars()
@staticmethod
def from_tags(tags):
header = HeaderSection()
if tags[1] == DXFTag(2, 'HEADER'): # DXF12 without a HEADER section is valid!
header._build(tags)
return header
def _create_default_vars(self):
self['$ACADVER'] = 'AC1009'
self['$DWGCODEPAGE'] = 'ANSI_1252'
def _build(self, tags):
if len(tags) == 3: # empty header section!
return
groups = TagGroups(tags[2:-1], split_code=9)
for group in groups:
self[group[0].value] = group[1].value
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