eccodes/tests/read_any.c

/*
 * (C) Copyright 2005- ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
 * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
 */
#include "grib_api.h"

static void usage(const char* prog)
{
    printf("usage: %s infile\n", prog);
    exit(1);
}

static unsigned char buffer[50000000];

int main(int argc, char* argv[])
{
    char* filename;
    FILE* f;
    grib_handle* h = NULL;
    grib_context* c;
    size_t size    = 0;
    int ret        = 0;
    size_t bufsize = sizeof(buffer);
    long count, step, edition, totalLength;
    char gridType[50], levelType[50], level[50], shortName[50];
    size_t gridTypelen  = sizeof(gridType);
    size_t levelTypelen = sizeof(levelType);
    size_t levellen     = sizeof(level);
    size_t shortNamelen = sizeof(shortName);
    size_t len;

    if (argc != 2)
        usage(argv[0]);
    filename = argv[1];

    f = fopen(filename, "rb");
    if (!f) {
        perror(filename);
        exit(1);
    }
    c = grib_context_get_default();

    size  = bufsize;
    count = 1;
    while ((ret = grib_read_any_from_file(c, f, buffer, &size)) == GRIB_SUCCESS) {
        if ((1)) {
            h = grib_handle_new_from_message_copy(c, buffer, size);
            if (!h) {
                printf("unable to new from message\n");
                exit(1);
            }
            else {
                grib_get_long(h, "edition", &edition);
                grib_get_long(h, "step", &step);
                grib_get_long(h, "totalLength", &totalLength);
                len = gridTypelen;
                grib_get_string(h, "gridType", gridType, &len);
                len = levelTypelen;
                GRIB_CHECK(grib_get_string(h, "levelType", levelType, &len), 0);
                len = levellen;
                grib_get_string(h, "level", level, &len);
                len = shortNamelen;
                grib_get_string(h, "shortName", shortName, &len);
                printf("- %3ld -\t ed=%ld\t size=%8ld totalLength=%8ld \t %s\t %s\t %s\t level=%s\t step=%ld\n",
                       count, edition, (long)size, totalLength, shortName, gridType, levelType, level, step);
                grib_handle_delete(h);
            }
        }
        else {
            printf("MESSAGE #%ld\n", count);
        }
        size = bufsize;
        count++;
    }

    grib_context_delete(grib_context_get_default());
    return 0;
}