29 lines
1.2 KiB
Python
29 lines
1.2 KiB
Python
def calculate_offsets(db_struct, current_offset=0):
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"""
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Recursively calculate byte offsets for each field in the DB structure,
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applying general alignment rules except inside arrays.
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"""
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if isinstance(db_struct, dict):
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for key, value in db_struct.items():
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if isinstance(value, dict) and 'type' in value:
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is_array_element = value.get('is_array_element', False)
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type_name = value['type']
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size = type_sizes.get(type_name, 1)
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if 'String' in type_name:
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match = re.match(r'String\[(\d+)\]', type_name)
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if match:
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size = int(match.group(1)) + 2 # String length + 2 for the null terminator and length prefix
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if not is_array_element and current_offset % 2 != 0:
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current_offset += 1 # Align to the next even offset if it's not an array element
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value['offset'] = current_offset
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current_offset += size
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# Recursively handle nested structures
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if isinstance(value, dict):
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current_offset = calculate_offsets(value, current_offset)
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return current_offset
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