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plugin/zstd and plugin/zstd_legacy [message #51451]

Tue, 26 March 2019 14:33

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

This is not likely to affect many U++ users, but...

In the past, we were early adopters of Yan Collet's zstd compression library. We have adopted prerelease version into plugin/zstd. (Frankly, I needed something like that the app I develop...).

Unfortunatly, later the API and the internal format of zstd has changed, which made me stuck with that prerelease versio for about 2 years, undecided how to solve this (and original version worked just fine too...).

Today I have finally resolved the issue: plugin/zstd is now current version 1.3.8. in the "modern" format and to support older files, I have created "plugin/zstd_legacy". This has the same API for old zstd file format, the disctinction is done by namespace Legacy. So if you have both in application, you can use e.g. Upp::Legacy::ZstdDecompressStream to load old file format and Upp::ZstdDecompressStream to load 'modern' format.

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