29 lines
749 B
Python
29 lines
749 B
Python
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import sys
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if len(sys.argv) != 4:
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print('Usage: %s {block-count} {content.bin} {out.gci}'%sys.argv[0], file=sys.stderr)
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sys.exit(1)
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blockCount = int(sys.argv[1])
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contentPath = sys.argv[2]
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outPath = sys.argv[3]
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gameId = b'GMSJ01\xff\x00' # TODO other version
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fileName = b'gct'
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pad = lambda buf, size: buf+b'\x00'*(size-len(buf))
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with open(contentPath, 'rb') as fr, open(outPath, 'wb') as fw:
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content = fr.read()
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bodySize = 0x2000*blockCount
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assert len(content)<=bodySize, f'{contentPath} is too big: expect at most {bodySize} bytes, got {len(content)}'
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fw.write(b''.join((
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# header
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gameId,
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pad(fileName, 0x20),
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b'\x00'*16,
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blockCount.to_bytes(2, 'big'),
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b'\xff'*6,
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# body
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pad(content, bodySize),
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)))
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