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Make compression of zstd archive type more similar to zstdcli #354

Merged
merged 3 commits into from Sep 17, 2023
Merged

Make compression of zstd archive type more similar to zstdcli #354

merged 3 commits into from Sep 17, 2023

Commits on Sep 14, 2023

  1. zstd compression - set source size as hint if it is known e. g. by fi… 

    …le compression (slightly better performance and/or compression ratio);

although the feature still calling as "experimental", but zstd uses this in its own client since v.1.4 IIRC and the only known drawback would be significant regress of compression ration if guess considerably underestimates, but it does no matter in case of known file size.
    @sebres
    sebres committed Sep 14, 2023
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  2. make compression of zstd archive type more similar to Zstandard CLI (… 

    …store dictID and checksum by default in zstd type, no effect for 7z type)
    @sebres
    sebres committed Sep 14, 2023
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  3. .zst, .br: avoid setting of size hint for unknown size by -si, sinc… 

    …e unpackSize will be supplied as -1 (`UINT64_MAX`)
    @sebres
    sebres committed Sep 14, 2023
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