durability appears 'NaN' value

[zaigie]

This is a dedicated server archieve file, and added durability*5 MOD in this server.

It can write to Level.sav.json normally, but an error is reported when another tool parses it.

uses ijson to stream parse files:

This looks like a problem caused by server cheating, is there a way to catch exceptions.

The archive is larger than 25M, so I uploaded it here: https://share.zaigie.com/s/U5ODI3N

[cheahjs]

Dear lord that's one of the largest save files I've seen so far.

Looking at the durability mod, it shouldn't produce NaN durabilities, so that shouldn't be the issue.

So the main issue is with the NaN float value that's emitted. The ijson lib that you're using specifically does not support NaNs as they are not part of the JSON spec (https://github.com/ICRAR/ijson/issues/33).

json.dump has the allow_nan=False flag to avoid outputting non-conformant float values (NaN, Infinity, and -Infinity), but that would require additional logic to either:

1. Take the hit with the loss of information for converting NaN/Inf/-Inf into nulls, and just encode nulls as NaNs on the reverse, or
2. Maintain the loseless approach, and add some sort of string handling to encode them into their string equivalents, and then decode back as necessary.

[zaigie]

Thank you for your answer, I give up, or performance is important :(

[cheahjs]

There's a PR up (#114) to emit null instead of NaN, haven't had the chance to test it yet, gotta run to work for now.

EDIT: and it's immediately broken oops, will fix it up at some point