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from pathlib import Path
from argparse import ArgumentParser
import ndspy.bmg
def main():
parser = ArgumentParser(description="View strings in BMG files")
parser.add_argument("--file", help="Path to the BMG file. If not provided, the file will be derived from the message ID.")
parser.add_argument("--language", help="Language of the BMG file. Does nothing if --file is provided.")
parser.add_argument("--version", help="Game version to use. Does nothing if --file is provided.")
parser.add_argument("id", help="Index of the BMG entry")
args = parser.parse_args()
if args.id.startswith("0x"):
msg_id = int(args.id, 16)
else:
msg_id = int(args.id)
bmg_file = get_bmg_file(args.file, msg_id, args.language, args.version)
with bmg_file.open("rb") as f:
data = f.read()
bmg = ndspy.bmg.BMG(data)
message = bmg.messages[msg_id & 0xffff]
for part in message.stringParts:
print(part, end="")
print()
BMG_FILENAMES = [
"system",
"regular",
"battle",
"test",
"default",
"sea",
"kaitei",
"main_isl",
"brave",
"flame",
"wind",
"frost",
"power",
"wisdom",
"ghost",
"hidari",
"sennin",
"ship",
"collect",
"mainselect",
"field",
"wisdom_dngn",
"demo",
"battleCommon",
"bossLast1",
"bossLast3",
"torii",
"myou",
"kojima1",
"kojima2",
"kojima5",
"kojima3",
"staff",
"kaitei_F",
]
LANGUAGES = [
"English",
"French",
"German",
"Italian",
"Spanish",
"Japanese",
]
def get_bmg_file(file: str | None, msg_id: int, language: str | None, version: str | None) -> Path:
if file is not None:
return Path(file)
versions = find_available_versions()
if len(versions) == 0:
print("You must extract the game files before using this tool")
exit(1)
if version is None:
version = versions[0]
if version not in versions:
print(f"Version {version} not found in the extract directory")
exit(1)
files_dir = Path(__file__).parent.parent / "extract" / version / "files"
if language is None:
for lang in LANGUAGES:
lang_dir = files_dir / lang
if lang_dir.exists():
language = lang
break
if language is None:
print("No language directories found in the extracted assets")
exit(1)
file_index = msg_id >> 16
if file_index >= len(BMG_FILENAMES):
print(f"Message ID {msg_id} is out of range")
exit(1)
filename = BMG_FILENAMES[file_index] + ".bmg"
return files_dir / language / "Message" / filename
def find_available_versions() -> list[str]:
extract_path = Path(__file__).parent.parent / "extract"
return [d.name for d in extract_path.iterdir() if d.is_dir()]
if __name__ == "__main__":
main()
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