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Filter support has three goals: 1. Use the existing HDF5 filter implementations, 2. Allow filter metadata to be stored in the NumCodecs metadata format used by Zarr, 3. Allow filters to be used even when HDF5 is disabled Detailed usage directions are define in docs/filters.md. For now, the existing filter API is left in place. So filters are defined using ''nc_def_var_filter'' using the HDF5 style where the id and parameters are unsigned integers. This is a big change since filters affect many parts of the code. In the following, the terms "compressor" and "filter" and "codec" are generally used synonomously. ### Filter-Related Changes: * In order to support dynamic loading of shared filter libraries, a new library was added in the libncpoco directory; it helps to isolate dynamic loading across multiple platforms. * Provide a json parsing library for use by plugins; this is created by merging libdispatch/ncjson.c with include/ncjson.h. * Add a new _Codecs attribute to allow clients to see what codecs are being used; let ncdump -s print it out. * Provide special headers to help support compilation of HDF5 filters when HDF5 is not enabled: netcdf_filter_hdf5_build.h and netcdf_filter_build.h. * Add a number of new test to test the new nczarr filters. * Let ncgen parse _Codecs attribute, although it is ignored. ### Plugin directory changes: * Add support for the Blosc compressor; this is essential because it is the most common compressor used in Zarr datasets. This also necessitated adding a CMake FindBlosc.cmake file * Add NCZarr support for the big-four filters provided by HDF5: shuffle, fletcher32, deflate (zlib), and szip * Add a Codec defaulter (see docs/filters.md) for the big four filters. * Make plugins work with windows by properly adding __declspec declaration. ### Misc. Non-Filter Changes * Replace most uses of USE_NETCDF4 (deprecated) with USE_HDF5. * Improve support for caching * More fixes for path conversion code * Fix misc. memory leaks * Add new utility -- ncdump/ncpathcvt -- that does more or less the same thing as cygpath. * Add a number of new test to test the non-filter fixes. * Update the parsers * Convert most instances of '#ifdef _MSC_VER' to '#ifdef _WIN32'
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/* A Bison parser, made by GNU Bison 3.7.6. */
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/* Bison interface for Yacc-like parsers in C
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Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2021 Free Software Foundation,
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Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* As a special exception, you may create a larger work that contains
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part or all of the Bison parser skeleton and distribute that work
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under terms of your choice, so long as that work isn't itself a
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parser generator using the skeleton or a modified version thereof
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as a parser skeleton. Alternatively, if you modify or redistribute
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the parser skeleton itself, you may (at your option) remove this
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special exception, which will cause the skeleton and the resulting
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Bison output files to be licensed under the GNU General Public
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License without this special exception.
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This special exception was added by the Free Software Foundation in
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version 2.2 of Bison. */
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/* DO NOT RELY ON FEATURES THAT ARE NOT DOCUMENTED in the manual,
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especially those whose name start with YY_ or yy_. They are
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private implementation details that can be changed or removed. */
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#ifndef YY_DCE_DCE_TAB_H_INCLUDED
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# define YY_DCE_DCE_TAB_H_INCLUDED
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/* Debug traces. */
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#ifndef YYDEBUG
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# define YYDEBUG 1
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#endif
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#if YYDEBUG
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extern int dcedebug;
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#endif
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/* Token kinds. */
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#ifndef YYTOKENTYPE
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# define YYTOKENTYPE
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enum yytokentype
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{
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YYEMPTY = -2,
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YYEOF = 0, /* "end of file" */
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YYerror = 256, /* error */
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YYUNDEF = 257, /* "invalid token" */
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SCAN_WORD = 258, /* SCAN_WORD */
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SCAN_STRINGCONST = 259, /* SCAN_STRINGCONST */
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SCAN_NUMBERCONST = 260 /* SCAN_NUMBERCONST */
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};
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typedef enum yytokentype yytoken_kind_t;
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#endif
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/* Value type. */
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#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
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typedef int YYSTYPE;
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# define YYSTYPE_IS_TRIVIAL 1
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# define YYSTYPE_IS_DECLARED 1
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#endif
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int dceparse (DCEparsestate* parsestate);
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#endif /* !YY_DCE_DCE_TAB_H_INCLUDED */
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