Feature Request: support for sparse storage games

[SageSystems]

Recently a new type of games known as sparse storage games have been becoming more and more common (No More Heroes 3 and Last Stop for example) these games cannot be compressed and decompressed correctly with nsz and soon may be very common, I have no technical knowledge of the format but I would like to request support (if it is already not in development)

[proconsule]

Very hard since small/no docs on that format
(is a field on Program NCA that inform on some math to get the right offsets)
I am working also on it, but for sure will be supported by nicoboss with his smart file format

[nicoboss]

I will definitely implement it once there is good enough documentation available about it.
Please link all the documentation you can find and also the open-source project that already implemented it here.
I wonder if they went with a similar approach then with NDV0. I guess we will know once I find documentation about it.
@blawar Do you know anything about this new sparse storage format?

[Masamune3210]

Goldleaf just merged support for sparse files, maybe go look at that? Just throwing out ideas

[proconsule]

Is not a new format but an unused one.
Atmosphere source code have info on sparse storage also.

Seems like is used on games with 0 day patch (thanks to duckbill007 who point me out this).

[blawar]

I will definitely implement it once there is good enough documentation available about it. Please link all the documentation you can find and also the open-source project that already implemented it here. I wonder if they went with a similar approach then with NDV0. I guess we will know once I find documentation about it. @blawar Do you know anything about this new sparse storage format?

Yes, I have done a lot of work on it. Compressing it is almost ready. Installing it is much different (and easier) than compressing it. There is a sparse header in the nca header which contains a BKTR header (similar to updates).