zstandard: vendor python-zstandard 0.10.1 This was just released. The upstream source distribution from PyPI was extracted. Unwanted files were removed. The clang-format ignore list was updated to reflect the new source of files. setup.py was updated to pass a new argument to python-zstandard's function for returning an Extension instance. Upstream had to change to use relative paths because Python 3.7's packaging doesn't seem to like absolute paths when defining sources, includes, etc. The default relative path calculation is relative to setup_zstd.py which is different from the directory of Mercurial's setup.py. The project contains a vendored copy of zstandard 1.3.6. The old version was 1.3.4. The API should be backwards compatible and nothing in core should need adjusted. However, there is a new "chunker" API that we may find useful in places where we want to emit compressed chunks of a fixed size. There are a pair of bug fixes in 0.10.0 with regards to compressobj() and decompressobj() when block flushing is used. I actually found these bugs when introducing these APIs in Mercurial! But existing Mercurial code is not affected because we don't perform block flushing. # no-check-commit because 3rd party code has different style guidelines Differential Revision: https://phab.mercurial-scm.org/D4911

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/*

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 * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.

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 * All rights reserved.

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 *

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 * This source code is licensed under both the BSD-style license (found in the

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 * LICENSE file in the root directory of this source tree) and the GPLv2 (found

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 * in the COPYING file in the root directory of this source tree).

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 * You may select, at your option, one of the above-listed licenses.

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 */

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#ifndef ZSTD_FAST_H

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#define ZSTD_FAST_H

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#if defined (__cplusplus)

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extern "C" {

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#endif

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#include "mem.h"      /* U32 */

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#include "zstd_compress_internal.h"

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void ZSTD_fillHashTable(ZSTD_matchState_t* ms,

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                        void const* end, ZSTD_dictTableLoadMethod_e dtlm);

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size_t ZSTD_compressBlock_fast(

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        ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],

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        void const* src, size_t srcSize);

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size_t ZSTD_compressBlock_fast_dictMatchState(

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        ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],

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        void const* src, size_t srcSize);

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size_t ZSTD_compressBlock_fast_extDict(

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        ZSTD_matchState_t* ms, seqStore_t* seqStore, U32 rep[ZSTD_REP_NUM],

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        void const* src, size_t srcSize);

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#if defined (__cplusplus)

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}

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#endif

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#endif /* ZSTD_FAST_H */