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# Purpose: decode DXF proprietary data
# Created: 01.05.2014
# Copyright (C) 2014, Manfred Moitzi
# License: MIT License
from __future__ import unicode_literals
__author__ = "mozman <mozman@gmx.at>"
from . import PYTHON3
_replacement_table = {
0x20: ' ',
0x40: '_',
0x5F: '@',
}
for c in range(0x41, 0x5F):
_replacement_table[c] = chr(0x41 + (0x5E - c)) # 0x5E -> 'A', 0x5D->'B', ...
def decode(text_lines):
def _decode(text):
s = []
skip = False
if PYTHON3:
text = bytes(text, 'ascii')
else:
text = map(ord, text)
for c in text:
if skip:
skip = False
continue
if c in _replacement_table:
s += _replacement_table[c]
skip = (c == 0x5E) # skip space after 'A'
else:
s += chr(c ^ 0x5F)
return ''.join(s)
return [_decode(line) for line in text_lines]
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