mirror of
https://github.com/sp-tarkov/modules.git
synced 2025-02-13 09:30:46 -05:00
3c23adebe2
## Preface EFT has been reworking the `bsg.componentace.compression.libs.zlib` alot the past versions, including various enhancements and introduced bugs (zero-tail decompression infinite looping). This also includes working towards deprecating `SimpleZlib` and improving `ZOutputStream`'s performance. While working on Haru, @waffle.lord and I have been reworking the zlib code to be much simpler. These changes are compatible with Aki. ## The issue - The current code is complex to understand without experience with the zlib library in question - `Zlib.IsCompressed` has a bug when operating on < 3 bytes. The third statement is reached and thus out of bounds. ## Why fix this - Simplifying the code improves future readability. - Using `ZOutputStream` enables usage of further performance improvements made to `ZOutputStream` by BSG. - `Zlib.IsCompressed` will work again on `byte[2]` and below. ## Why was it like this in the first place? At the time of writing this code, there was poor understanding of how the zlib library worked. The implementation was a best-guess from decompiled code. ## What's affected? Only Zlib utility's internal code. No external libraries are affected. Co-authored-by: Merijn Hendriks <merijn.d.hendriks@gmail.com> Reviewed-on: SPT-AKI/Modules#43 Co-authored-by: Merijn Hendriks <senko-san@noreply.dev.sp-tarkov.com> Co-committed-by: Merijn Hendriks <senko-san@noreply.dev.sp-tarkov.com>