tst_diskless2.c

/*! \file

Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
2015, 2016, 2017, 2018
University Corporation for Atmospheric Research/Unidata.

See \ref copyright file for more info.

*/

#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <netcdf.h>


#define FILENAME "tst_diskless2.nc"


#define Clear ((unsigned char)0)
#define Cumulonimbus ((unsigned char)1)
#define Stratus ((unsigned char)2)
typedef unsigned char enum_t;
typedef unsigned char opaque_t[11];
typedef nc_vlen_t vlen_t;
typedef struct g_cmpd_t {
    vlen_t f1;
    enum_t f2;
} g_cmpd_t;


void
check_err(const int stat, const int line, const char *file) {
    if (stat != NC_NOERR) {
        (void)fprintf(stderr,"line %d of %s: %s\n", line, file, nc_strerror(stat));
        fflush(stderr);
        exit(1);
    }
}

int
main() {/* create tst_diskless2.nc */

    int  stat;  /* return status */
    int  ncid;  /* netCDF id */

    /* group ids */
    int root_grp;
    int g_grp;
    int h_grp;

    /* type ids */
    int enum_t_typ;
    int opaque_t_typ;
    int vlen_t_typ;
    int g_cmpd_t_typ;

    /* dimension ids */
    int lat_dim;
    int lon_dim;
    int time_dim;

    /* dimension lengths */
    size_t lat_len = 10;
    size_t lon_len = 5;
    size_t time_len = NC_UNLIMITED;

    /* variable ids */
    int lat_id;
    int lon_id;
    int time_id;
    int Z_id;
    int t_id;
    int p_id;
    int rh_id;
    int country_id;
    int tag_id;
    int h_compoundvar_id;

    /* rank (number of dimensions) for each variable */
#   define RANK_lat 1
#   define RANK_lon 1
#   define RANK_time 1
#   define RANK_Z 3
#   define RANK_t 3
#   define RANK_p 3
#   define RANK_rh 3
#   define RANK_country 3
#   define RANK_tag 0
#   define RANK_h_compoundvar 0

    /* variable shapes */
    int lat_dims[RANK_lat];
    int lon_dims[RANK_lon];
    int time_dims[RANK_time];
    int Z_dims[RANK_Z];
    int t_dims[RANK_t];
    int p_dims[RANK_p];
    int rh_dims[RANK_rh];
    int country_dims[RANK_country];

    /* enter define mode */
    stat = nc_create(FILENAME, NC_DISKLESS|NC_WRITE|NC_CLOBBER|NC_NETCDF4|NC_PERSIST, &ncid);
    check_err(stat,__LINE__,__FILE__);
    root_grp = ncid;
    stat = nc_def_grp(root_grp, "g", &g_grp);
    check_err(stat,__LINE__,__FILE__);
    stat = nc_def_grp(root_grp, "h", &h_grp);
    check_err(stat,__LINE__,__FILE__);

    {
    unsigned char econst;
    stat = nc_def_enum(root_grp, NC_UBYTE, "enum_t", &enum_t_typ);
    check_err(stat,__LINE__,__FILE__);
    econst = 0;
    stat = nc_insert_enum(root_grp, enum_t_typ, "Clear", &econst);
    check_err(stat,__LINE__,__FILE__);
    econst = 1;
    stat = nc_insert_enum(root_grp, enum_t_typ, "Cumulonimbus", &econst);
    check_err(stat,__LINE__,__FILE__);
    econst = 2;
    stat = nc_insert_enum(root_grp, enum_t_typ, "Stratus", &econst);
    check_err(stat,__LINE__,__FILE__);
    }

    stat = nc_def_opaque(root_grp, 11, "opaque_t", &opaque_t_typ);
    check_err(stat,__LINE__,__FILE__);

    stat = nc_def_vlen(root_grp, "vlen_t", NC_INT, &vlen_t_typ);    check_err(stat,__LINE__,__FILE__);

    stat = nc_def_compound(g_grp, sizeof(g_cmpd_t), "cmpd_t", &g_cmpd_t_typ);    check_err(stat,__LINE__,__FILE__);
    {
    stat = nc_insert_compound(g_grp, g_cmpd_t_typ, "f1", NC_COMPOUND_OFFSET(g_cmpd_t,f1), vlen_t_typ);    check_err(stat,__LINE__,__FILE__);
    stat = nc_insert_compound(g_grp, g_cmpd_t_typ, "f2", NC_COMPOUND_OFFSET(g_cmpd_t,f2), enum_t_typ);    check_err(stat,__LINE__,__FILE__);
    }


    /* define dimensions */
    stat = nc_def_dim(root_grp, "lat", lat_len, &lat_dim);
    check_err(stat,__LINE__,__FILE__);
    stat = nc_def_dim(root_grp, "lon", lon_len, &lon_dim);
    check_err(stat,__LINE__,__FILE__);
    stat = nc_def_dim(root_grp, "time", time_len, &time_dim);
    check_err(stat,__LINE__,__FILE__);

    /* define variables */

    lat_dims[0] = lat_dim;
    stat = nc_def_var(root_grp, "lat", NC_INT, RANK_lat, lat_dims, &lat_id);
    check_err(stat,__LINE__,__FILE__);

    lon_dims[0] = lon_dim;
    stat = nc_def_var(root_grp, "lon", NC_INT, RANK_lon, lon_dims, &lon_id);
    check_err(stat,__LINE__,__FILE__);

    time_dims[0] = time_dim;
    stat = nc_def_var(root_grp, "time", NC_INT, RANK_time, time_dims, &time_id);
    check_err(stat,__LINE__,__FILE__);

    Z_dims[0] = time_dim;
    Z_dims[1] = lat_dim;
    Z_dims[2] = lon_dim;
    stat = nc_def_var(root_grp, "Z", NC_FLOAT, RANK_Z, Z_dims, &Z_id);
    check_err(stat,__LINE__,__FILE__);

    t_dims[0] = time_dim;
    t_dims[1] = lat_dim;
    t_dims[2] = lon_dim;
    stat = nc_def_var(root_grp, "t", NC_FLOAT, RANK_t, t_dims, &t_id);
    check_err(stat,__LINE__,__FILE__);

    p_dims[0] = time_dim;
    p_dims[1] = lat_dim;
    p_dims[2] = lon_dim;
    stat = nc_def_var(root_grp, "p", NC_DOUBLE, RANK_p, p_dims, &p_id);
    check_err(stat,__LINE__,__FILE__);

    rh_dims[0] = time_dim;
    rh_dims[1] = lat_dim;
    rh_dims[2] = lon_dim;
    stat = nc_def_var(root_grp, "rh", NC_INT, RANK_rh, rh_dims, &rh_id);
    check_err(stat,__LINE__,__FILE__);

    country_dims[0] = time_dim;
    country_dims[1] = lat_dim;
    country_dims[2] = lon_dim;
    stat = nc_def_var(root_grp, "country", NC_STRING, RANK_country, country_dims, &country_id);
    check_err(stat,__LINE__,__FILE__);

    stat = nc_def_var(root_grp, "tag", NC_UBYTE, RANK_tag, 0, &tag_id);
    check_err(stat,__LINE__,__FILE__);

    stat = nc_def_var(h_grp, "compoundvar", g_cmpd_t_typ, RANK_h_compoundvar, 0, &h_compoundvar_id);
    check_err(stat,__LINE__,__FILE__);

    /* assign global attributes */

    {
    static const int vlen_2[] = {17, 18, 19} ;
    static const vlen_t globalatt_att[1] = {{3, (void*)vlen_2}} ;
    stat = nc_put_att(root_grp, NC_GLOBAL, "globalatt", vlen_t_typ, 1, globalatt_att);
    check_err(stat,__LINE__,__FILE__);
    }


    /* assign per-variable attributes */

    {
    stat = nc_put_att_text(root_grp, lat_id, "long_name", 8, "latitude");
    check_err(stat,__LINE__,__FILE__);
    }

    {
    stat = nc_put_att_text(root_grp, lat_id, "units", 13, "degrees_north");
    check_err(stat,__LINE__,__FILE__);
    }

    {
    stat = nc_put_att_text(root_grp, lon_id, "long_name", 9, "longitude");
    check_err(stat,__LINE__,__FILE__);
    }

    {
    stat = nc_put_att_text(root_grp, lon_id, "units", 12, "degrees_east");
    check_err(stat,__LINE__,__FILE__);
    }

    {
    stat = nc_put_att_text(root_grp, time_id, "units", 31, "seconds since 1992-1-1 00:00:00");
    check_err(stat,__LINE__,__FILE__);
    }

    {
    static const char* Z_units_att[1] = {"geopotential meters"} ;
    stat = nc_put_att_string(root_grp, Z_id, "units", 1, Z_units_att);    check_err(stat,__LINE__,__FILE__);
    }

    {
    static const float Z_valid_range_att[2] = {((float)0), ((float)5000)} ;
    stat = nc_put_att_float(root_grp, Z_id, "valid_range", NC_FLOAT, 2, Z_valid_range_att);
    check_err(stat,__LINE__,__FILE__);
    }

    {
    static const double p_FillValue_att[1] = {((double)-9999)} ;
    stat = nc_put_att_double(root_grp, p_id, "_FillValue", NC_DOUBLE, 1, p_FillValue_att);
    check_err(stat,__LINE__,__FILE__);
    }

    {
    static const int rh_FillValue_att[1] = {-1} ;
    stat = nc_put_att_int(root_grp, rh_id, "_FillValue", NC_INT, 1, rh_FillValue_att);
    check_err(stat,__LINE__,__FILE__);
    }


    /* leave define mode */
    stat = nc_enddef (root_grp);
    check_err(stat,__LINE__,__FILE__);

    /* assign variable data */

    {
    int lat_data[10] = {0, 10, 20, 30, 40, 50, 60, 70, 80, 90} ;
    size_t lat_startset[1] = {0} ;
    size_t lat_countset[1] = {10};
    stat = nc_put_vara(root_grp, lat_id, lat_startset, lat_countset, lat_data);
    check_err(stat,__LINE__,__FILE__);
    }


    {
    int lon_data[5] = {-140, -118, -96, -84, -52} ;
    size_t lon_startset[1] = {0} ;
    size_t lon_countset[1] = {5};
    stat = nc_put_vara(root_grp, lon_id, lon_startset, lon_countset, lon_data);
    check_err(stat,__LINE__,__FILE__);
    }


    {
    static const int vlen_10[] = {3, 4, 5} ;
    size_t zero = 0;
    static g_cmpd_t h_compoundvar_data[1] = {{{3, (void*)vlen_10}, 2}};
    stat = nc_put_var1(h_grp, h_compoundvar_id, &zero, h_compoundvar_data);
    check_err(stat,__LINE__,__FILE__);
    }


    stat = nc_close(root_grp);
    check_err(stat,__LINE__,__FILE__);
    return 0;
}