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import json |
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import sys |
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def extract_metadata(_file_path, _start_marker): |
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local_metadata = "" |
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with open(_file_path, "rb") as f: |
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content = f.read() |
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start_pos = content.find(_start_marker) |
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if start_pos != -1: |
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end_pos = start_pos |
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brace_count = 0 |
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for idx, b in enumerate(content[start_pos:]): |
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if b == ord('{'): |
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brace_count += 1 |
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elif b == ord('}'): |
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brace_count -= 1 |
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if brace_count == 0: |
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end_pos += idx |
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break |
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json_bytes = content[start_pos:end_pos + 1] |
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content_str = json_bytes.decode("utf-8") |
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try: |
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local_metadata = json.loads(content_str) |
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except json.JSONDecodeError as e: |
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print(f"Error decoding JSON: {e}") |
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return local_metadata |
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def save_metadata_to_json(_metadata, _output_file): |
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with open(_output_file, "w", encoding="utf-8") as f: |
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json.dump(_metadata, f, ensure_ascii=False, indent=2) |
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def extract_metadata_layer(json_data): |
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local_metadata_layer = {} |
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for key, value in json_data.items(): |
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if key == "__metadata__": |
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local_metadata_layer[key] = value |
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elif isinstance(value, dict): |
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extracted = extract_metadata_layer(value) |
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if extracted: |
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local_metadata_layer[key] = extracted |
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return local_metadata_layer |
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def load_json_file(_file_path): |
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with open(_file_path, "r", encoding="utf-8") as f: |
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return json.load(f) |
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if __name__ == "__main__": |
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if len(sys.argv) != 3: |
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print("Usage: python module.py <input_file> <output_file>") |
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sys.exit(1) |
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file_path = sys.argv[1] |
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output_file = sys.argv[2] |
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start_marker = b'{"__metadata__":' |
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metadata = extract_metadata(file_path, start_marker) |
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save_metadata_to_json(metadata, output_file) |
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data = load_json_file(output_file) |
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metadata_layer = extract_metadata_layer(data) |
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save_metadata_to_json(metadata_layer, output_file) |
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