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#!/usr/bin/env python3
#
# Mess up a Gerber file to look like it was generated by Zuken CR-8000.
# Only meant to work with KiCAD Gerber files.
#
import re
def map_line(line):
# strip layer polarity statement at start of header
if line == '%LPD*%':
return ''
# Replace end of aperture list comment with empty line and layer polarity statement
if line == 'G04 APERTURE END LIST*':
return '\n%LPD*%\n' # this is the last newline in this file
# strip comments
if line.startswith('G04'):
return ''
# add G54 prefix to aperture selection statements
if re.fullmatch(r'D[1-9][0-9]\*', line):
return f'G54{line}'
# make flash statements more complicated
if (m := re.fullmatch(r'(.*)D03\*', line)):
return f'{m[1]}D02*G55D03*'
# replace M02 EOF with M00 EOF, and insert X0Y0D02
if line == 'M02*':
return 'X0Y0D02*M00*'
# Merge G01/02/03 with following coordinate
if line in ('G01*', 'G02*', 'G03*'):
return line[:-1]
# Preserve line endings for header lines
if any(line.startswith(cmd) for cmd in ('%FS', '%MO', '%AD')):
return f'{line}\n'
return line
def zukenka(data):
return ''.join(map_line(line) for line in data.splitlines())
if __name__ == '__main__':
import sys
print(zukenka(sys.stdin.read()))
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