netcdf-c/nc_test4/tst_udf.c

/* This is part of the netCDF package. Copyright 2005-2018 University
   Corporation for Atmospheric Research/Unidata. See COPYRIGHT file
   for conditions of use.

   Test user-defined formats.

   Ed Hartnett
*/

#include "config.h"
#include <nc_tests.h>
#include "err_macros.h"
#include "netcdf.h"
#include "nc4dispatch.h"
#include "netcdf_dispatch.h"

#define FILE_NAME "tst_udf.nc"

#if defined(_WIN32) || defined(_WIN64)
int
NC4_show_metadata(int ncid)
{
    return 0;
}
#endif

int
tst_open(const char *path, int mode, int basepe, size_t *chunksizehintp,
         void *parameters, const NC_Dispatch *dispatch, int ncid)
{
    return NC_NOERR;
}

int
tst_abort(int ncid)
{
    return TEST_VAL_42;
}

int
tst_close(int ncid, void *v)
{
    return NC_NOERR;
}

int
tst_inq_format(int ncid, int *formatp)
{
    return TEST_VAL_42;
}

int
tst_inq_format_extended(int ncid, int *formatp, int *modep)
{
    return TEST_VAL_42;
}

int
tst_get_vara(int ncid, int varid, const size_t *start, const size_t *count,
             void *value, nc_type t)
{
    return TEST_VAL_42;
}

/* This is the dispatch object that holds pointers to all the
 * functions that make up the HDF4 dispatch interface. */
static NC_Dispatch tst_dispatcher = {

    NC_FORMATX_UDF0,
    NC_DISPATCH_VERSION,

    NC_RO_create,
    tst_open,

    NC_RO_redef,
    NC_RO__enddef,
    NC_RO_sync,
    tst_abort,
    tst_close,
    NC_RO_set_fill,
    tst_inq_format,
    tst_inq_format_extended,

    NC4_inq,
    NC4_inq_type,

    NC_RO_def_dim,
    NC4_inq_dimid,
    NC4_inq_dim,
    NC4_inq_unlimdim,
    NC_RO_rename_dim,

    NC4_inq_att,
    NC4_inq_attid,
    NC4_inq_attname,
    NC_RO_rename_att,
    NC_RO_del_att,
    NC4_get_att,
    NC_RO_put_att,

    NC_RO_def_var,
    NC4_inq_varid,
    NC_RO_rename_var,
    tst_get_vara,
    NC_RO_put_vara,
    NCDEFAULT_get_vars,
    NCDEFAULT_put_vars,
    NCDEFAULT_get_varm,
    NCDEFAULT_put_varm,

    NC4_inq_var_all,

    NC_NOTNC4_var_par_access,
    NC_RO_def_var_fill,

    NC4_show_metadata,
    NC4_inq_unlimdims,

    NC4_inq_ncid,
    NC4_inq_grps,
    NC4_inq_grpname,
    NC4_inq_grpname_full,
    NC4_inq_grp_parent,
    NC4_inq_grp_full_ncid,
    NC4_inq_varids,
    NC4_inq_dimids,
    NC4_inq_typeids,
    NC4_inq_type_equal,
    NC_NOTNC4_def_grp,
    NC_NOTNC4_rename_grp,
    NC4_inq_user_type,
    NC4_inq_typeid,

    NC_NOTNC4_def_compound,
    NC_NOTNC4_insert_compound,
    NC_NOTNC4_insert_array_compound,
    NC_NOTNC4_inq_compound_field,
    NC_NOTNC4_inq_compound_fieldindex,
    NC_NOTNC4_def_vlen,
    NC_NOTNC4_put_vlen_element,
    NC_NOTNC4_get_vlen_element,
    NC_NOTNC4_def_enum,
    NC_NOTNC4_insert_enum,
    NC_NOTNC4_inq_enum_member,
    NC_NOTNC4_inq_enum_ident,
    NC_NOTNC4_def_opaque,
    NC_NOTNC4_def_var_deflate,
    NC_NOTNC4_def_var_fletcher32,
    NC_NOTNC4_def_var_chunking,
    NC_NOTNC4_def_var_endian,
    NC_NOTNC4_def_var_filter,
    NC_NOTNC4_set_var_chunk_cache,
    NC_NOTNC4_get_var_chunk_cache
};

#define NUM_UDFS 2

int mode[NUM_UDFS] = {NC_UDF0, NC_UDF1};

int
main(int argc, char **argv)
{
    printf("\n*** Testing user-defined formats.\n");
    printf("*** testing simple user-defined format...");
    {
        int ncid;
        NC_Dispatch *disp_in;
        int i;

        /* Create an empty file to play with. */
        if (nc_create(FILE_NAME, 0, &ncid)) ERR;
        if (nc_close(ncid)) ERR;

        /* Test all available user-defined format slots. */
        for (i = 0; i < NUM_UDFS; i++)
        {
            /* Add our user defined format. */
            if (nc_def_user_format(mode[i], &tst_dispatcher, NULL)) ERR;

            /* Check that our user-defined format has been added. */
            if (nc_inq_user_format(mode[i], &disp_in, NULL)) ERR;
            if (disp_in != &tst_dispatcher) ERR;

            /* Open file with our defined functions. */
            if (nc_open(FILE_NAME, mode[i], &ncid)) ERR;
            if (nc_close(ncid)) ERR;

            /* Open file again and abort, which is the same as closing
             * it. This also tests that the UDF flags are given
             * priority. If NC_NETCDF4 flag were given priority, then
             * nc_abort() will not return TEST_VAL_42, but instead will
             * return 0. */
            if (nc_open(FILE_NAME, mode[i]|NC_NETCDF4, &ncid)) ERR;
            if (nc_inq_format(ncid, NULL) != TEST_VAL_42) ERR;
            if (nc_inq_format_extended(ncid, NULL, NULL) != TEST_VAL_42) ERR;
            if (nc_abort(ncid) != TEST_VAL_42) ERR;
        }
    }
    SUMMARIZE_ERR;
    printf("*** testing user-defined format with magic number...");
    {
        int ncid;
        NC_Dispatch *disp_in;
        char magic_number[5] = "1111";
        char dummy_data[11] = "0123456789";
        char magic_number_in[NC_MAX_MAGIC_NUMBER_LEN];
        FILE *FP;
        int i;

        /* Create a file with magic number at start. */
        if (!(FP = fopen(FILE_NAME, "w"))) ERR;
        if (fwrite(magic_number, sizeof(char), strlen(magic_number), FP)
            != strlen(magic_number)) ERR;
        if (fwrite(dummy_data, sizeof(char), strlen(dummy_data), FP)
            != strlen(dummy_data)) ERR;
        if (fclose(FP)) ERR;

        /* Test all available user-defined format slots. */
        for (i = 0; i < NUM_UDFS; i++)
        {
            /* Add our test user defined format. */
            if (nc_def_user_format(mode[i], &tst_dispatcher, magic_number)) ERR;

            /* Check that our user-defined format has been added. */
            if (nc_inq_user_format(mode[i], &disp_in, magic_number_in)) ERR;
            if (disp_in != &tst_dispatcher) ERR;
            if (strncmp(magic_number, magic_number_in, strlen(magic_number))) ERR;

            /* Open file with our defined functions. */
            if (nc_open(FILE_NAME, mode[i], &ncid)) ERR;
            if (nc_close(ncid)) ERR;

            /* Open file again and abort, which is the same as closing
             * it. This time we don't specify a mode, because the magic
             * number is used to identify the file. */
            if (nc_open(FILE_NAME, 0, &ncid)) ERR;
            if (nc_inq_format(ncid, NULL) != TEST_VAL_42) ERR;
            if (nc_inq_format_extended(ncid, NULL, NULL) != TEST_VAL_42) ERR;
            if (nc_abort(ncid) != TEST_VAL_42) ERR;
        }
    }
    SUMMARIZE_ERR;
    FINAL_RESULTS;
}