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vendor/github.com/klauspost/compress/README.md
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vendor/github.com/klauspost/compress/README.md
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@@ -16,113 +16,6 @@ This package provides various compression algorithms.
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# changelog
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* Sep 23rd, 2024 - [1.17.10](https://github.com/klauspost/compress/releases/tag/v1.17.10)
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* gzhttp: Add TransportAlwaysDecompress option. https://github.com/klauspost/compress/pull/978
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* gzhttp: Add supported decompress request body by @mirecl in https://github.com/klauspost/compress/pull/1002
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* s2: Add EncodeBuffer buffer recycling callback https://github.com/klauspost/compress/pull/982
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* zstd: Improve memory usage on small streaming encodes https://github.com/klauspost/compress/pull/1007
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* flate: read data written with partial flush by @vajexal in https://github.com/klauspost/compress/pull/996
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* Jun 12th, 2024 - [1.17.9](https://github.com/klauspost/compress/releases/tag/v1.17.9)
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* s2: Reduce ReadFrom temporary allocations https://github.com/klauspost/compress/pull/949
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* flate, zstd: Shave some bytes off amd64 matchLen by @greatroar in https://github.com/klauspost/compress/pull/963
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* Upgrade zip/zlib to 1.22.4 upstream https://github.com/klauspost/compress/pull/970 https://github.com/klauspost/compress/pull/971
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* zstd: BuildDict fails with RLE table https://github.com/klauspost/compress/pull/951
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* Apr 9th, 2024 - [1.17.8](https://github.com/klauspost/compress/releases/tag/v1.17.8)
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* zstd: Reject blocks where reserved values are not 0 https://github.com/klauspost/compress/pull/885
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* zstd: Add RLE detection+encoding https://github.com/klauspost/compress/pull/938
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* Feb 21st, 2024 - [1.17.7](https://github.com/klauspost/compress/releases/tag/v1.17.7)
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* s2: Add AsyncFlush method: Complete the block without flushing by @Jille in https://github.com/klauspost/compress/pull/927
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* s2: Fix literal+repeat exceeds dst crash https://github.com/klauspost/compress/pull/930
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* Feb 5th, 2024 - [1.17.6](https://github.com/klauspost/compress/releases/tag/v1.17.6)
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* zstd: Fix incorrect repeat coding in best mode https://github.com/klauspost/compress/pull/923
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* s2: Fix DecodeConcurrent deadlock on errors https://github.com/klauspost/compress/pull/925
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* Jan 26th, 2024 - [v1.17.5](https://github.com/klauspost/compress/releases/tag/v1.17.5)
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* flate: Fix reset with dictionary on custom window encodes https://github.com/klauspost/compress/pull/912
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* zstd: Add Frame header encoding and stripping https://github.com/klauspost/compress/pull/908
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* zstd: Limit better/best default window to 8MB https://github.com/klauspost/compress/pull/913
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* zstd: Speed improvements by @greatroar in https://github.com/klauspost/compress/pull/896 https://github.com/klauspost/compress/pull/910
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* s2: Fix callbacks for skippable blocks and disallow 0xfe (Padding) by @Jille in https://github.com/klauspost/compress/pull/916 https://github.com/klauspost/compress/pull/917
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https://github.com/klauspost/compress/pull/919 https://github.com/klauspost/compress/pull/918
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* Dec 1st, 2023 - [v1.17.4](https://github.com/klauspost/compress/releases/tag/v1.17.4)
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* huff0: Speed up symbol counting by @greatroar in https://github.com/klauspost/compress/pull/887
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* huff0: Remove byteReader by @greatroar in https://github.com/klauspost/compress/pull/886
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* gzhttp: Allow overriding decompression on transport https://github.com/klauspost/compress/pull/892
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* gzhttp: Clamp compression level https://github.com/klauspost/compress/pull/890
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* gzip: Error out if reserved bits are set https://github.com/klauspost/compress/pull/891
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* Nov 15th, 2023 - [v1.17.3](https://github.com/klauspost/compress/releases/tag/v1.17.3)
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* fse: Fix max header size https://github.com/klauspost/compress/pull/881
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* zstd: Improve better/best compression https://github.com/klauspost/compress/pull/877
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* gzhttp: Fix missing content type on Close https://github.com/klauspost/compress/pull/883
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* Oct 22nd, 2023 - [v1.17.2](https://github.com/klauspost/compress/releases/tag/v1.17.2)
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* zstd: Fix rare *CORRUPTION* output in "best" mode. See https://github.com/klauspost/compress/pull/876
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* Oct 14th, 2023 - [v1.17.1](https://github.com/klauspost/compress/releases/tag/v1.17.1)
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* s2: Fix S2 "best" dictionary wrong encoding by @klauspost in https://github.com/klauspost/compress/pull/871
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* flate: Reduce allocations in decompressor and minor code improvements by @fakefloordiv in https://github.com/klauspost/compress/pull/869
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* s2: Fix EstimateBlockSize on 6&7 length input by @klauspost in https://github.com/klauspost/compress/pull/867
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* Sept 19th, 2023 - [v1.17.0](https://github.com/klauspost/compress/releases/tag/v1.17.0)
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* Add experimental dictionary builder https://github.com/klauspost/compress/pull/853
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* Add xerial snappy read/writer https://github.com/klauspost/compress/pull/838
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* flate: Add limited window compression https://github.com/klauspost/compress/pull/843
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* s2: Do 2 overlapping match checks https://github.com/klauspost/compress/pull/839
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* flate: Add amd64 assembly matchlen https://github.com/klauspost/compress/pull/837
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* gzip: Copy bufio.Reader on Reset by @thatguystone in https://github.com/klauspost/compress/pull/860
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<details>
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<summary>See changes to v1.16.x</summary>
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* July 1st, 2023 - [v1.16.7](https://github.com/klauspost/compress/releases/tag/v1.16.7)
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* zstd: Fix default level first dictionary encode https://github.com/klauspost/compress/pull/829
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* s2: add GetBufferCapacity() method by @GiedriusS in https://github.com/klauspost/compress/pull/832
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* June 13, 2023 - [v1.16.6](https://github.com/klauspost/compress/releases/tag/v1.16.6)
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* zstd: correctly ignore WithEncoderPadding(1) by @ianlancetaylor in https://github.com/klauspost/compress/pull/806
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* zstd: Add amd64 match length assembly https://github.com/klauspost/compress/pull/824
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* gzhttp: Handle informational headers by @rtribotte in https://github.com/klauspost/compress/pull/815
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* s2: Improve Better compression slightly https://github.com/klauspost/compress/pull/663
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* Apr 16, 2023 - [v1.16.5](https://github.com/klauspost/compress/releases/tag/v1.16.5)
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* zstd: readByte needs to use io.ReadFull by @jnoxon in https://github.com/klauspost/compress/pull/802
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* gzip: Fix WriterTo after initial read https://github.com/klauspost/compress/pull/804
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* Apr 5, 2023 - [v1.16.4](https://github.com/klauspost/compress/releases/tag/v1.16.4)
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* zstd: Improve zstd best efficiency by @greatroar and @klauspost in https://github.com/klauspost/compress/pull/784
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* zstd: Respect WithAllLitEntropyCompression https://github.com/klauspost/compress/pull/792
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* zstd: Fix amd64 not always detecting corrupt data https://github.com/klauspost/compress/pull/785
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* zstd: Various minor improvements by @greatroar in https://github.com/klauspost/compress/pull/788 https://github.com/klauspost/compress/pull/794 https://github.com/klauspost/compress/pull/795
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* s2: Fix huge block overflow https://github.com/klauspost/compress/pull/779
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* s2: Allow CustomEncoder fallback https://github.com/klauspost/compress/pull/780
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* gzhttp: Support ResponseWriter Unwrap() in gzhttp handler by @jgimenez in https://github.com/klauspost/compress/pull/799
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* Mar 13, 2023 - [v1.16.1](https://github.com/klauspost/compress/releases/tag/v1.16.1)
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* zstd: Speed up + improve best encoder by @greatroar in https://github.com/klauspost/compress/pull/776
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* gzhttp: Add optional [BREACH mitigation](https://github.com/klauspost/compress/tree/master/gzhttp#breach-mitigation). https://github.com/klauspost/compress/pull/762 https://github.com/klauspost/compress/pull/768 https://github.com/klauspost/compress/pull/769 https://github.com/klauspost/compress/pull/770 https://github.com/klauspost/compress/pull/767
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* s2: Add Intel LZ4s converter https://github.com/klauspost/compress/pull/766
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* zstd: Minor bug fixes https://github.com/klauspost/compress/pull/771 https://github.com/klauspost/compress/pull/772 https://github.com/klauspost/compress/pull/773
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* huff0: Speed up compress1xDo by @greatroar in https://github.com/klauspost/compress/pull/774
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* Feb 26, 2023 - [v1.16.0](https://github.com/klauspost/compress/releases/tag/v1.16.0)
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* s2: Add [Dictionary](https://github.com/klauspost/compress/tree/master/s2#dictionaries) support. https://github.com/klauspost/compress/pull/685
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* s2: Add Compression Size Estimate. https://github.com/klauspost/compress/pull/752
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* s2: Add support for custom stream encoder. https://github.com/klauspost/compress/pull/755
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* s2: Add LZ4 block converter. https://github.com/klauspost/compress/pull/748
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* s2: Support io.ReaderAt in ReadSeeker. https://github.com/klauspost/compress/pull/747
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* s2c/s2sx: Use concurrent decoding. https://github.com/klauspost/compress/pull/746
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</details>
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<details>
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<summary>See changes to v1.15.x</summary>
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* Jan 21st, 2023 (v1.15.15)
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* deflate: Improve level 7-9 by @klauspost in https://github.com/klauspost/compress/pull/739
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* zstd: Add delta encoding support by @greatroar in https://github.com/klauspost/compress/pull/728
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@@ -157,7 +50,7 @@ https://github.com/klauspost/compress/pull/919 https://github.com/klauspost/comp
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* zstd: Add [WithDecodeAllCapLimit](https://pkg.go.dev/github.com/klauspost/compress@v1.15.10/zstd#WithDecodeAllCapLimit) https://github.com/klauspost/compress/pull/649
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* Add Go 1.19 - deprecate Go 1.16 https://github.com/klauspost/compress/pull/651
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* flate: Improve level 5+6 compression https://github.com/klauspost/compress/pull/656
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* zstd: Improve "better" compression https://github.com/klauspost/compress/pull/657
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* zstd: Improve "better" compresssion https://github.com/klauspost/compress/pull/657
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* s2: Improve "best" compression https://github.com/klauspost/compress/pull/658
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* s2: Improve "better" compression. https://github.com/klauspost/compress/pull/635
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* s2: Slightly faster non-assembly decompression https://github.com/klauspost/compress/pull/646
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@@ -249,8 +142,6 @@ Stream decompression is now faster on asynchronous, since the goroutine allocati
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While the release has been extensively tested, it is recommended to testing when upgrading.
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</details>
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<details>
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<summary>See changes to v1.14.x</summary>
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@@ -360,7 +251,7 @@ While the release has been extensively tested, it is recommended to testing when
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* s2: Fix binaries.
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* Feb 25, 2021 (v1.11.8)
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* s2: Fixed occasional out-of-bounds write on amd64. Upgrade recommended.
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* s2: Fixed occational out-of-bounds write on amd64. Upgrade recommended.
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* s2: Add AMD64 assembly for better mode. 25-50% faster. [#315](https://github.com/klauspost/compress/pull/315)
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* s2: Less upfront decoder allocation. [#322](https://github.com/klauspost/compress/pull/322)
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* zstd: Faster "compression" of incompressible data. [#314](https://github.com/klauspost/compress/pull/314)
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@@ -539,7 +430,7 @@ While the release has been extensively tested, it is recommended to testing when
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* Feb 19, 2016: Faster bit writer, level -2 is 15% faster, level 1 is 4% faster.
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* Feb 19, 2016: Handle small payloads faster in level 1-3.
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* Feb 19, 2016: Added faster level 2 + 3 compression modes.
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* Feb 19, 2016: [Rebalanced compression levels](https://blog.klauspost.com/rebalancing-deflate-compression-levels/), so there is a more even progression in terms of compression. New default level is 5.
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* Feb 19, 2016: [Rebalanced compression levels](https://blog.klauspost.com/rebalancing-deflate-compression-levels/), so there is a more even progresssion in terms of compression. New default level is 5.
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* Feb 14, 2016: Snappy: Merge upstream changes.
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* Feb 14, 2016: Snappy: Fix aggressive skipping.
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* Feb 14, 2016: Snappy: Update benchmark.
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@@ -586,8 +477,6 @@ the stateless compress described below.
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For compression performance, see: [this spreadsheet](https://docs.google.com/spreadsheets/d/1nuNE2nPfuINCZJRMt6wFWhKpToF95I47XjSsc-1rbPQ/edit?usp=sharing).
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To disable all assembly add `-tags=noasm`. This works across all packages.
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# Stateless compression
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This package offers stateless compression as a special option for gzip/deflate.
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@@ -606,7 +495,7 @@ For direct deflate use, NewStatelessWriter and StatelessDeflate are available. S
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A `bufio.Writer` can of course be used to control write sizes. For example, to use a 4KB buffer:
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```go
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```
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// replace 'ioutil.Discard' with your output.
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gzw, err := gzip.NewWriterLevel(ioutil.Discard, gzip.StatelessCompression)
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if err != nil {
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@@ -711,10 +600,6 @@ Here are other packages of good quality and pure Go (no cgo wrappers or autoconv
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* [github.com/pierrec/lz4](https://github.com/pierrec/lz4) - strong multithreaded LZ4 compression.
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* [github.com/cosnicolaou/pbzip2](https://github.com/cosnicolaou/pbzip2) - multithreaded bzip2 decompression.
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* [github.com/dsnet/compress](https://github.com/dsnet/compress) - brotli decompression, bzip2 writer.
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* [github.com/ronanh/intcomp](https://github.com/ronanh/intcomp) - Integer compression.
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* [github.com/spenczar/fpc](https://github.com/spenczar/fpc) - Float compression.
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* [github.com/minio/zipindex](https://github.com/minio/zipindex) - External ZIP directory index.
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* [github.com/ybirader/pzip](https://github.com/ybirader/pzip) - Fast concurrent zip archiver and extractor.
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# license
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