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/*
* (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 <stdio.h>
#include <string.h>
#include "grib_api.h"
static void usage(const char* prog)
{
fprintf(stderr, "%s: file\n", prog);
exit(1);
}
int main(int argc, const char* argv[])
{
FILE* in;
int e;
grib_handle* h;
if (argc != 2)
usage(argv[0]);
in = fopen(argv[argc - 1], "r");
if (!in) {
perror(argv[argc - 1]);
exit(1);
}
while ((h = grib_handle_new_from_file(NULL, in, &e)) != NULL) {
grib_keys_iterator* i = grib_keys_iterator_new(h, GRIB_KEYS_ITERATOR_ALL_KEYS, "mars");
while (grib_keys_iterator_next(i)) {
char value[1024];
size_t len = sizeof(value);
const char* name;
name = grib_keys_iterator_get_name(i);
GRIB_CHECK(grib_get_string(h, name, value, &len), 0);
printf("%s = %s\n", name, value);
}
grib_keys_iterator_delete(i);
grib_handle_delete(h);
}
GRIB_CHECK(e, argv[argc - 1]);
return 0;
}
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