New DXF importer, based in DXFGrabber.

This addon replaces the old DXF importer.

Written by cnd (Lukas Treyer).

It uses dxfgrabber - copyright (C) 2012 by Manfred Moitzi (mozman) (MIT license).

Review and some cleanup by mont29 (Bastien Montagne).

1 files changed, 33 insertions, 0 deletions

diff --git a/io_import_dxf/dxfgrabber/headersection.py b/io_import_dxf/dxfgrabber/headersection.py
new file mode 100755
index 00000000..a12cee95
--- /dev/null
+++ b/io_import_dxf/dxfgrabber/headersection.py
@@ -0,0 +1,33 @@
+# 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