mirror of https://github.com/ecmwf/eccodes.git
90 lines
2.6 KiB
C
90 lines
2.6 KiB
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.
|
|
*/
|
|
|
|
/*
|
|
* C Implementation: bufr_read_header
|
|
*
|
|
* Description: how to read the header of 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;
|
|
long longVal;
|
|
int err = 0, cnt = 0;
|
|
|
|
if (argc != 2) usage(argv[0]);
|
|
|
|
filename = argv[1];
|
|
|
|
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;
|
|
}
|
|
|
|
printf("message: %d\n", cnt);
|
|
|
|
/* get and print some keys from the BUFR header */
|
|
CODES_CHECK(codes_get_long(h, "dataCategory", &longVal), 0);
|
|
printf(" dataCategory: %ld\n", longVal);
|
|
|
|
CODES_CHECK(codes_get_long(h, "dataSubCategory", &longVal), 0);
|
|
printf(" dataSubCategory: %ld\n", longVal);
|
|
|
|
CODES_CHECK(codes_get_long(h, "typicalDate", &longVal), 0);
|
|
printf(" typicalDate: %ld\n", longVal);
|
|
|
|
CODES_CHECK(codes_get_long(h, "bufrHeaderCentre", &longVal), 0);
|
|
printf(" bufrHeaderCentre: %ld\n", longVal);
|
|
|
|
CODES_CHECK(codes_get_long(h, "bufrHeaderSubCentre", &longVal), 0);
|
|
printf(" bufrHeaderSubCentre: %ld\n", longVal);
|
|
|
|
CODES_CHECK(codes_get_long(h, "masterTablesVersionNumber", &longVal), 0);
|
|
printf(" masterTablesVersionNumber: %ld\n", longVal);
|
|
|
|
CODES_CHECK(codes_get_long(h, "localTablesVersionNumber", &longVal), 0);
|
|
printf(" localTablesVersionNumber: %ld\n", longVal);
|
|
|
|
CODES_CHECK(codes_get_long(h, "numberOfSubsets", &longVal), 0);
|
|
printf(" numberOfSubsets: %ld\n", longVal);
|
|
|
|
/* release memory */
|
|
codes_handle_delete(h);
|
|
|
|
cnt++;
|
|
}
|
|
|
|
fclose(in);
|
|
return 0;
|
|
}
|