netcdf-c/examples/C
Dennis Heimbigner aeb3ac2809 Mostly revert the filter code to reduce its complexity of use.
re: https://github.com/Unidata/netcdf-c/issues/1836

Revert the internal filter code to simplify it. From the user's
point of view, the only visible changes should be:

1. The functions that convert text to filter specs have had their signature reverted and have been moved to netcdf_aux.h
2. Some filter API functions now return NC_ENOFILTER when inquiry is made about some filter.

Internally,the dispatch table has been modified to get rid of the filter_actions
entry and associated complex structures. It has been replaced with
inq_var_filter_ids and inq_var_filter_info entries and the dispatch table
version has been bumped to 3. Corresponding NOOP and NOTNC4 functions
were added to libdispatch/dnotnc4.c. Also, the filter_action entries
in dispatch tables were replaced for all dispatch code bases (HDF5, DAP2,
etc). This should only impact UDF users.

In the process, it became clear that the form of the filters
field in NC_VAR_INFO_T was format dependent, so I converted it to
be of type void* and pushed its management into the various dispatch
code bases. Specifically libhdf5 and libnczarr now manage the filters
field in their own way.

The auxilliary functions for parsing textual filter specifications
were moved to netcdf_aux.h and were renamed to the following:
* ncaux_h5filterspec_parse
* ncaux_h5filterspec_parselist
* ncaux_h5filterspec_free
* ncaux_h5filter_fix8

Misc. Other Changes:

1. Document NUG/filters.md updated to reflect the changes above.
2. All the old data types (structs and enums)
   used by filter_actions actions were deleted.
   The exception is the NC_H5_Filterspec because it is needed
   by ncaux_h5filterspec_parselist.
3. Clientside filters were removed -- another enhancement
   for which no-one ever asked.
4. The ability to remove filters was itself removed.
5. Some functionality needed by nczarr was moved from libhdf5
   to libsrc4 e.g. nc4_find_default_chunksizes
6. All the filterx code was removed
7. ncfilter.h and nc4filter.c no longer used

Misc. Unrelated Changes:

1. The nczarr_test makefile clean was leaving some directories; so
   add clean-local to take care of them.
2020-09-27 12:43:46 -06:00
..
CMakeLists.txt turing on programs in examples/C 2019-05-12 09:12:42 -06:00
file.c Spelling fixes 2019-09-18 08:03:01 -06:00
filter_example.c Mostly revert the filter code to reduce its complexity of use. 2020-09-27 12:43:46 -06:00
format.c turing on programs in examples/C 2019-05-12 09:12:42 -06:00
large_files.c Updating files to refer to the top-level COPYRIGHT file. 2018-12-04 15:52:43 -07:00
Makefile.am This PR adds EXPERIMENTAL support for accessing data in the 2020-06-28 18:02:47 -06:00
met4D.c Updating files to refer to the top-level COPYRIGHT file. 2018-12-04 15:52:43 -07:00
parallel_vara.c change to trigger CI 2019-01-14 13:26:52 -07:00
pres_temp_4D_rd.c example documentation cleanup 2019-03-12 10:11:07 -06:00
pres_temp_4D_wr.c example documentation cleanup 2019-03-12 10:22:44 -06:00
quick_large_files.c fixed warning in quick_large_files.c 2019-07-02 08:25:44 -06:00
quick_small_files.c fixed quick_small_files.c 2019-07-02 08:53:26 -06:00
run_examples4.sh Updating files to refer to the top-level COPYRIGHT file. 2018-12-04 15:52:43 -07:00
run_examples.sh Updating files to refer to the top-level COPYRIGHT file. 2018-12-04 15:52:43 -07:00
run_filter.sh Support installation of the bzip2 plugin under name libh5bzip2.so 2019-02-27 15:22:46 -07:00
run_par_test.sh.in Spelling fixes 2019-09-18 08:03:01 -06:00
sfc_pres_temp_more.c comment 2019-07-04 13:47:14 -06:00
sfc_pres_temp_rd.c example documentation cleanup 2019-03-12 10:21:36 -06:00
sfc_pres_temp_wr.c example documentation cleanup 2019-03-12 10:22:44 -06:00
simple_nc4_rd.c example documentation cleanup 2019-03-12 10:26:38 -06:00
simple_nc4_wr.c example documentation cleanup 2019-03-12 10:26:38 -06:00
simple_xy_nc4_rd.c Spelling fixes 2019-09-18 08:03:01 -06:00
simple_xy_nc4_wr.c Spelling fixes 2019-09-18 08:03:01 -06:00
simple_xy_rd.c example documentation cleanup 2019-03-12 10:28:10 -06:00
simple_xy_wr.c Updating files to refer to the top-level COPYRIGHT file. 2018-12-04 15:52:43 -07:00
simple.c cleanup of simple.c 2019-07-02 08:59:27 -06:00