75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
from math import pow
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from typing import BinaryIO
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def nds_get_info(opt: str, inf: BinaryIO):
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match opt.lower():
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case 'title':
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inf.seek(0x000)
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return inf.read(12).decode()
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case 'gamecode':
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inf.seek(0x00C)
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return inf.read(4).decode()
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case 'makercode':
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inf.seek(0x010)
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return _maker_lookup(inf.read(2).decode())
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case 'unitcode':
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inf.seek(0x012)
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return _unit_lookup(inf.read(1))
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case 'encryptionseed':
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inf.seek(0x013)
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return str(int.from_bytes(inf.read(1), 'little'))
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case 'devicecapacity':
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inf.seek(0x014)
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return _capacity_lookup(int.from_bytes(inf.read(1), 'little'))
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case 'gamerevision':
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inf.seek(0x01C)
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return str(int.from_bytes(inf.read(2), 'little'))
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case 'region':
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inf.seek(0x01D)
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return _region_lookup(int.from_bytes(inf.read(1), 'little'))
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case _:
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return 'Unknown'
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def _maker_lookup(code: str) -> str:
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match code:
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case '01':
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return 'Nintendo ({})'.format(code)
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case 'GD':
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return 'Square-Enix ({})'.format(code)
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case 'FG':
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return 'Foreign Media Games ({})'.format(code)
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case _:
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return 'Unknown ({})'.format(code)
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def _unit_lookup(code: bytes) -> str:
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if code == b'\x00':
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return 'NDS (00h)'
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elif code == b'\x02':
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return 'DSi Enhanced (02h)'
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elif code == b'\x03':
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return 'DSi Exclusive (03h)'
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else:
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return 'Unknown ({})'.format(code)
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def _capacity_lookup(code: int) -> str: # 512Mbit (67108864 bytes) (09h)
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match code:
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case 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12:
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return '{} MB ({})'.format(round(128 * pow(2, code) / 1024), '{}h'.format(str(code).zfill(2)))
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case _:
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return 'Unknown ({})'.format(code)
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def _region_lookup(code: int) -> str:
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match code:
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case 0:
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return 'All (0x00 (0))'
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case 64:
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return 'Korea (0x40 (64))'
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case 128:
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return 'China (0x80 (128))'
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case _:
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return 'Unknown ({})'.format(code)
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