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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 "grib_api_internal.h"
int main(int argc, char** argv)
{
FILE* in = NULL;
int err = 0;
grib_handle* h_full = NULL;
grib_keys_iterator* iter = NULL;
const char* name = NULL;
const void* msg1 = NULL;
const char* infilename = NULL;
size_t size1 = 0;
grib_handle* h_partial = 0;
ECCODES_ASSERT(argc == 2);
infilename = argv[1];
printf("Processing file %s\n", infilename);
in = fopen(infilename, "rb");
ECCODES_ASSERT(in);
h_full = grib_handle_new_from_file(0, in, &err);
ECCODES_ASSERT(h_full);
ECCODES_ASSERT(!err);
GRIB_CHECK(grib_get_message_headers(h_full, &msg1, &size1), 0);
h_partial = grib_handle_new_from_partial_message(h_full->context, msg1, size1);
ECCODES_ASSERT(h_partial);
iter = grib_keys_iterator_new(h_partial, GRIB_KEYS_ITERATOR_SKIP_COMPUTED, NULL);
ECCODES_ASSERT(iter);
while (grib_keys_iterator_next(iter)) {
name = grib_keys_iterator_get_name(iter);
printf("Header key=%s\n", name);
}
grib_keys_iterator_delete(iter);
grib_handle_delete(h_partial);
h_partial = grib_handle_new_from_partial_message_copy(h_full->context, msg1, size1);
grib_handle_delete(h_partial);
grib_handle_delete(h_full);
fclose(in);
return 0;
}
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