public static async ValueTask <IBSAReader> OpenRead(AbsolutePath filename)
{
return(await BSASignatures.MatchesAsync(filename) switch
{
Definitions.FileType.TES3 => await TES3Reader.Load(new NativeFileStreamFactory(filename)),
Definitions.FileType.BSA => await BSAReader.LoadAsync(new NativeFileStreamFactory(filename)),
Definitions.FileType.BA2 => await BA2Reader.Load(new NativeFileStreamFactory(filename)),
_ => throw new InvalidDataException("Filename is not a .bsa or .ba2")
});
public static async ValueTask <IBSAReader> OpenRead(AbsolutePath filename)
{
var fourcc = "";
using (var file = await filename.OpenRead())
{
fourcc = Encoding.ASCII.GetString(new BinaryReader(file).ReadBytes(4));
}
if (fourcc == TES3Reader.TES3_MAGIC)
{
return(await TES3Reader.Load(filename));
}
if (fourcc == "BSA\0")
{
return(await BSAReader.Load(filename));
}
if (fourcc == "BTDX")
{
return(await BA2Reader.Load(filename));
}
throw new InvalidDataException("Filename is not a .bsa or .ba2, magic " + fourcc);
}