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import argparse
import sys
import py_nand_ass.disas as dass # pyright: ignore[reportImplicitRelativeImport]
def main():
arg_parser = argparse.ArgumentParser(
prog="disas_main.py", description="Nandgame disassembler"
)
g = arg_parser.add_mutually_exclusive_group()
g.add_argument("--le", action="store_true")
g.add_argument("--be", action="store_true")
arg_parser.add_argument("filename")
args = arg_parser.parse_args()
endianness = "little"
if args.be:
endianness = "big"
filename = args.filename
try:
with open(filename, "rb") as f:
while True:
insb = f.read(2)
if not insb:
break
ins = int.from_bytes(insb, byteorder=endianness)
if endianness in ["big", "be"]:
raw_ins = f"{insb[0]:02x} {insb[1]:02x}"
elif endianness in ["little", "le"]:
raw_ins = f"{insb[1]:02x} {insb[0]:02x}"
else:
raw_ins = f"?? ??"
decoded_ins = dass.print_decoded(ins, False)
decoded_ins2 = dass.print_decoded(ins, True)
if decoded_ins == decoded_ins2:
line = f"\t{raw_ins}\t{decoded_ins}"
else:
line = f"\t{raw_ins}\t{decoded_ins2:<25}; {decoded_ins}"
print(line)
except FileNotFoundError:
print(f"File {filename} not found.")
sys.exit(1)
# head, tail...
except BrokenPipeError:
sys.exit(0)
if __name__ == "__main__":
main()
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