mirror of https://github.com/ecmwf/eccodes.git
60 lines
1.1 KiB
C
60 lines
1.1 KiB
C
#include <stdio.h>
|
|
|
|
#include "grib_api.h"
|
|
|
|
void usage(char *app) {
|
|
fprintf(stderr,"Usage is: %s input_file ouput_file \n",app);
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
FILE *in = NULL;
|
|
FILE *out = NULL;
|
|
|
|
grib_handle *source_handle = NULL;
|
|
grib_handle *clone_handle = NULL;
|
|
const void *buffer = NULL;
|
|
size_t size = 0;
|
|
int err = 0;
|
|
|
|
/* check number of arguments */
|
|
if (argc != 3) {
|
|
usage(argv[0]);
|
|
return 1;
|
|
}
|
|
|
|
in = fopen(argv[1],"r");
|
|
out = fopen(argv[2],"w");
|
|
|
|
if (!in || !out) {
|
|
perror("ERROR: unable to open input files");
|
|
return 1;
|
|
}
|
|
|
|
/* loop over the messages in the source grib and clone them */
|
|
while ((source_handle = grib_handle_new_from_file(0,in,&err))!=NULL) {
|
|
clone_handle = grib_handle_clone(source_handle);
|
|
|
|
if (clone_handle == NULL) {
|
|
perror("ERROR: coult not clone field");
|
|
return 1;
|
|
}
|
|
|
|
/* get the coded message in a buffer */
|
|
GRIB_CHECK(grib_get_message(clone_handle,&buffer,&size),0);
|
|
/* write the buffer to a file */
|
|
if(fwrite(buffer,1,size,out) != size)
|
|
{
|
|
perror(argv[1]);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
grib_handle_delete(source_handle);
|
|
grib_handle_delete(clone_handle);
|
|
|
|
fclose(out);
|
|
fclose(in);
|
|
|
|
return 0;
|
|
}
|