Starbound __merge - > JSON .patch conversion

convert.py

# Converts the old __merge: [] syntax of Starbound file modifying to the new .patch format.

import json
import sys

def convert_file(file):
  data = None

  with open(file, "r") as f:
    data = json.load(f)

  ops = convert_data("", data)

  with open(file + ".patch", "w") as f:
    json.dump(ops, f)


def convert_data(path, data):
  ops = []

  do_merge = False

  if "__merge" in data and isinstance(data["__merge"], list):
    for k, v in list(data.items()):
      if k == "__merge": 
        continue

      if isinstance(v, dict) and "__merge" in v:
        ops.append(*convert_data(path + "/" + k, v))

      ops.append({
        "op": "add",
        "path": path + "/" + k,
        "value": v
      })

  return ops

for file in sys.argv[1:]:
  print("Converting", file)
  convert_file(file)