Leopoldo Rodríguez
9367527d85
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01YJ4eAB6zjQT49RVwpgfKdt
66 lines
3.0 KiB
Python
66 lines
3.0 KiB
Python
#!/usr/bin/env python3
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"""v6 T15b — delete the 4 dangling track stubs DRC reported on 25-Sep (warnings track_dangling).
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Each target is identified by net + layer + the dangling end DRC printed + the reported length;
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the script refuses to delete anything that doesn't match exactly one segment.
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python3 T15b.py hbox-watchdog-v6.kicad_pcb # dry run
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python3 T15b.py hbox-watchdog-v6.kicad_pcb --apply # writes .T15bbak
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"""
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import re, sys, math, shutil
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STUBS = [ # (net, layer, dangling end x, y, length mm) — from the 25-Sep DRC report
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('/3V3_ETH', 'F.Cu', 91.7375, 56.0800, 0.3889),
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('/VEH5V', 'F.Cu', 187.5000, 116.1100, 0.7071),
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('/RS485_B', 'B.Cu', 145.3500, 131.1682, 0.2107),
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('/DOUT_4G', 'In2.Cu', 158.4000, 80.1000, 1.6000),
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# second DRC pass: the RS485_B stub was a 3-segment chain off a THT pad going nowhere
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('/RS485_B', 'B.Cu', 146.2000, 132.0182, 1.2021),
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('/RS485_B', 'B.Cu', 146.2000, 132.3075, 0.2894),
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]
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def span(s, i):
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d = 0; instr = False; j = i
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while True:
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c = s[j]
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if c == '"' and s[j-1] != '\\': instr = not instr
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elif not instr:
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if c == '(': d += 1
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elif c == ')':
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d -= 1
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if d == 0: return j + 1
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j += 1
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def main():
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path = sys.argv[1]; apply = '--apply' in sys.argv
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s0 = open(path).read(); cuts = []; log = []
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segs = []
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for m in re.finditer(r'\n\t\(segment\b', s0):
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a = m.start() + 1; e = span(s0, a); b = s0[a:e]
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st = tuple(map(float, re.search(r'\(start (-?[\d.]+) (-?[\d.]+)\)', b).groups()))
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en = tuple(map(float, re.search(r'\(end (-?[\d.]+) (-?[\d.]+)\)', b).groups()))
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segs.append(dict(a=a, e=e, st=st, en=en, l=re.search(r'\(layer "([^"]+)"\)', b).group(1),
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n=re.search(r'\(net "([^"]*)"\)', b).group(1)))
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for net, lay, x, y, L in STUBS:
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hit = [g for g in segs if g['n'] == net and g['l'] == lay
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and any(math.hypot(px - x, py - y) < 0.005 for px, py in (g['st'], g['en']))
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and abs(math.dist(g['st'], g['en']) - L) < 0.002]
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if not hit:
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log.append(f'{net} {lay} @({x},{y}): not found (already removed?)'); continue
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if len(hit) > 1: raise SystemExit(f'{net}: {len(hit)} candidates, refusing')
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cuts.append(hit[0]); log.append(f'delete {net} {lay} {hit[0]["st"]}->{hit[0]["en"]} ({L} mm)')
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s = s0
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for g in sorted(cuts, key=lambda g: -g['a']):
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s = s[:g['a'] - 1] + s[g['e']:] # also drops the preceding newline
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t = re.sub(r'"(?:[^"\\]|\\.)*"', '', s); assert t.count('(') == t.count(')'), 'unbalanced'
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assert len(re.findall(r'\n\t\(footprint "', s)) == len(re.findall(r'\n\t\(footprint "', s0))
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print('\n'.join(log))
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if not cuts: print('nothing to do'); return
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if apply:
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shutil.copy2(path, path + '.T15bbak'); open(path, 'w').write(s); print('APPLIED (backup .T15bbak)')
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else:
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print('DRY RUN — re-run with --apply')
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if __name__ == '__main__':
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main()
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