implemented changes from Jens review

scripts/extract_lcsc.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+"""Extract all LCSC part numbers from a KiCad schematic and print a sorted table."""
+
+import re
+import sys
+
+SCH_FILE = 'cm4-nrf54.kicad_sch'
+
+if len(sys.argv) > 1:
+    SCH_FILE = sys.argv[1]
+
+with open(SCH_FILE, 'r') as f:
+    content = f.read()
+
+lcsc_pattern = re.compile(r'\(property\s*"(?:LCSC|lcsc|LCSC Part)"\s*"([^"]+)"')
+field_pattern = re.compile(r'\(property\s*"(LCSC|lcsc|LCSC Part)"\s*"([^"]+)"')
+
+blocks = re.split(r'\n\s*\(symbol\s+\(lib_id', content)
+
+dnp_pattern = re.compile(r'\(dnp\s+yes\)')
+
+results = []
+for block in blocks[1:]:
+    ref_m   = re.search(r'\(property\s*"Reference"\s*"([^"]+)"', block)
+    val_m   = re.search(r'\(property\s*"Value"\s*"([^"]+)"', block)
+    lcsc_m  = lcsc_pattern.search(block)
+    field_m = field_pattern.search(block)
+
+    ref   = ref_m.group(1)   if ref_m   else '?'
+    val   = val_m.group(1)   if val_m   else '?'
+    lcsc  = lcsc_m.group(1)  if lcsc_m  else ''
+    field = field_m.group(1) if field_m else ''
+    dnp   = bool(dnp_pattern.search(block))
+
+    if ref.startswith('#') or ref == '?':
+        continue
+    results.append((ref, val, lcsc, field, dnp))
+
+def sort_key(x):
+    letters = ''.join(filter(str.isalpha, x[0]))
+    digits  = ''.join(filter(str.isdigit, x[0]))
+    return (letters, int(digits) if digits else 0)
+
+results.sort(key=sort_key)
+
+print(f'{"REF":12} {"VALUE":42} {"LCSC":15} {"DNP":3} FIELD')
+print('-' * 87)
+for ref, val, lcsc, field, dnp in results:
+    dnp_str = 'DNP' if dnp else '   '
+    skip = dnp or ref.startswith(('H', 'JP', 'TP'))
+    flag = '  <-- MISSING' if not lcsc and not skip else ''
+    print(f'{ref:12} {val:42} {lcsc:15} {dnp_str} {field}{flag}')