Add openpilot tools

tools/cabana/dbc/generate_dbc_json.py

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+import argparse
+import json
+
+from openpilot.selfdrive.car.car_helpers import get_interface_attr
+
+
+def generate_dbc_json() -> str:
+  all_cars_by_brand = get_interface_attr("CAR_INFO")
+  all_dbcs_by_brand = get_interface_attr("DBC")
+  dbc_map = {car: all_dbcs_by_brand[brand][car]['pt'] for brand, cars in all_cars_by_brand.items() for car in cars if car != 'mock'}
+  return json.dumps(dict(sorted(dbc_map.items())), indent=2)
+
+
+if __name__ == "__main__":
+  parser = argparse.ArgumentParser(description="Generate mapping for all car fingerprints to DBC names and outputs json file",
+                                   formatter_class=argparse.ArgumentDefaultsHelpFormatter)
+
+  parser.add_argument("--out", required=True, help="Generated json filepath")
+  args = parser.parse_args()
+
+  with open(args.out, 'w') as f:
+    f.write(generate_dbc_json())
+  print(f"Generated and written to {args.out}")