mirror of https://github.com/ecmwf/eccodes.git
112 lines
2.0 KiB
C
112 lines
2.0 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.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "grib_api.h"
|
|
|
|
void usage(const char *prog)
|
|
{
|
|
fprintf(stderr,"%s: in1 [in2 ... ] out\n",prog);
|
|
exit(1);
|
|
}
|
|
|
|
grib_values values[10240];
|
|
|
|
int main(int argc, const char *argv[])
|
|
{
|
|
int i,j;
|
|
FILE *in,*out;
|
|
int e;
|
|
grib_handle *result = NULL,*h;
|
|
double* values = NULL;
|
|
double *tmp = NULL;
|
|
size_t size,count;
|
|
|
|
if(argc < 3) usage(argv[0]);
|
|
|
|
|
|
out = fopen(argv[argc-1],"w");
|
|
if(!out) {
|
|
perror(argv[argc-1]);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
for(i = 1; i < argc-1; i++)
|
|
{
|
|
in = fopen(argv[i],"r");
|
|
if(!in) {
|
|
perror(argv[i]);
|
|
exit(1);
|
|
}
|
|
|
|
while( (h = grib_handle_new_from_file(NULL,in,&e)) != NULL )
|
|
{
|
|
|
|
if(result == NULL)
|
|
{
|
|
|
|
GRIB_CHECK(grib_get_size(h,"values",&size),argv[i]);
|
|
|
|
values = (double*)calloc(size,sizeof(double));
|
|
assert(values);
|
|
|
|
tmp = (double*)calloc(size,sizeof(double));
|
|
assert(tmp);
|
|
|
|
result = h;
|
|
}
|
|
|
|
GRIB_CHECK(grib_get_size(h,"values",&count),argv[i]);
|
|
assert(count == size);
|
|
|
|
GRIB_CHECK(grib_get_double_array(h,"values",tmp,&count),argv[i]);
|
|
assert(count == size);
|
|
|
|
for(j = 0; j < count; j++)
|
|
values[j] += tmp[j];
|
|
|
|
|
|
if(h != result)
|
|
grib_handle_delete(h);
|
|
}
|
|
|
|
GRIB_CHECK(e,argv[argc-2]);
|
|
}
|
|
|
|
if(result)
|
|
{
|
|
const void *buffer;
|
|
GRIB_CHECK(grib_set_double_array(result,"values",values,size),argv[i]);
|
|
GRIB_CHECK(grib_get_message(result,&buffer,&size),argv[0]);
|
|
|
|
if(fwrite(buffer,1,size,out) != size)
|
|
{
|
|
perror(argv[argc-1]);
|
|
exit(1);
|
|
}
|
|
|
|
grib_handle_delete(result);
|
|
}
|
|
|
|
|
|
if(fclose(out))
|
|
{
|
|
perror(argv[argc-1]);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
return 0;
|
|
}
|