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#!/usr/bin/env python3
#
# Mess up an Excellon file to look like it was generated by Zuken CR-8000.
# Only meant to work with KiCAD Excellon files.
#
import re
class Mapper:
def __init__(self):
self.g05_found = False
def map_line(self, line):
# Remove comments
if line[0] == ';':
return ''
# Drop G90
if line == 'G90':
return ''
# Drop first G05
if line == 'G05' and not self.g05_found:
self.g05_found = True
return ''
# Strip FMAT line (we need to put it in further down)
if line == 'FMAT,2':
return ''
# Replace unit line with new header
if line in ('METRIC', 'INCH'):
return f'{line},LZ\nICI,OFF\nVER,1\nFMAT,2\nDETECT,ON\nATC,ON\n'
# Add non-functional M06 to all tool uses after T01 with
if re.fullmatch(r'T[0-9]*', line):
# Pad tool indices to two digits
if len(line) == 2:
line = f'{line[0]}0{line[1]}'
return f'M06\n{line}\n'
# Remove trailing non-functional T0
if line == 'T0':
return ''
# Replace M30 EOF with M00 EOF
if line == 'M30':
return 'M00\n'
# Convert coordinates into fixed-width 4.4 format
if (m := re.fullmatch(r'X([-0-9.]*)Y([-0-9.]*)', line)):
x, y = float(m[1]), float(m[2])
# sign, four digits, point, four digits = 10 digits
x, y = f'{x: 010.4f}', f'{y: 010.4f}'
x, y = x.strip().replace('.', ''), y.strip().replace('.', '')
return f'X{x}Y{y}\n'
return f'{line}\n'
def zukenka(data):
m = Mapper()
return ''.join(m.map_line(line) for line in data.splitlines())
if __name__ == '__main__':
import sys
print(zukenka(sys.stdin.read()))
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