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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.
*/
/*
* C Implementation: bufr_expanded
*
* Description: how to read all the expanded data values from BUFR messages.
*
*/
#include "eccodes.h"
static void usage(const char* prog)
{
printf("usage: %s infile\n", prog);
exit(1);
}
int main(int argc, char* argv[])
{
char* filename = NULL;
FILE* in = NULL;
/* message handle. Required in all the ecCodes calls acting on a message.*/
codes_handle* h = NULL;
double* values = NULL;
size_t values_len = 0;
int i, err = 0;
int cnt = 0;
if (argc != 2) usage(argv[0]);
filename = argv[1];
/* open bufr file */
in = fopen(filename, "rb");
if (!in) {
fprintf(stderr, "Error: unable to open file %s\n", filename);
return 1;
}
/* loop over the messages in the bufr file */
while ((h = codes_handle_new_from_file(NULL, in, PRODUCT_BUFR, &err)) != NULL || err != CODES_SUCCESS) {
if (h == NULL) {
fprintf(stderr, "Error: unable to create handle for message %d\n", cnt);
cnt++;
continue;
}
/* get the size of the values array*/
CODES_CHECK(codes_get_size(h, "numericValues", &values_len), 0);
printf(" number of expanded values: %lu\n", values_len);
/* allocate array for data values */
values = (double*)malloc(values_len * sizeof(double));
/* get the expanded data values*/
CODES_CHECK(codes_get_double_array(h, "numericValues", values, &values_len), 0);
for (i = 0; i < values_len; i++) {
printf(" %.10e\n", values[i]);
}
free(values);
/* delete handle */
codes_handle_delete(h);
cnt++;
}
fclose(in);
return 0;
}
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