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/*
* Copyright 2005-2016 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.
*/
/*
* =====================================================================================
*
* Filename: bpv_limit.c
*
* Description: test setting the number of bpv before decoding and then encoding;
* setting the wrong number of bpv should result in an exception
*
* Version: 1.0
* Created: 30/03/10 16:07:51
* Revision: none
* Compiler: gcc
*
* Author: Cristian Codorean (mow), mow@ecmwf.int
* Company: ECMWF
*
* =====================================================================================
*/
#include <stdio.h>
#include <stdlib.h>
#include "grib_api.h"
void usage(char* prog) {
printf("usage: %s filein\n",prog);
exit(1);
}
int main(int argc, char** argv) {
int err = 0;
size_t values_len=0;
double *values = NULL;
char error_msg[100] ;
size_t slong = sizeof(long) * 8 ;
int i;
FILE* in = NULL;
char* filename ;
grib_handle *h = NULL;
if (argc<2) usage(argv[0]);
filename=argv[1];
in = fopen(filename,"r");
if(!in) {
printf("ERROR: unable to open file %s\n",filename);
return 1;
}
/* create new handle from a message in a file*/
h = grib_handle_new_from_file(0,in,&err);
if (h == NULL) {
printf("Error: unable to create handle from file %s\n",filename);
}
for (i=0;i<255;i++) {
/* get the size of the values array*/
GRIB_CHECK(grib_get_size(h,"values",&values_len),0);
values = (double*)malloc(values_len*sizeof(double));
err = grib_get_double_array(h,"values",values,&values_len);
GRIB_CHECK(grib_set_long(h,"bitsPerValue",i),0);
err = grib_set_double_array(h,"values",values,values_len);
free(values);
values = 0;
/*
* check if encoding of the data fails when the number of bpv
* is not supported; bpv allowed on decoding is bpv < size of long
*/
if (i < slong && err == 0) {
/* do nothing */
} else if (i >= slong && err == GRIB_INVALID_BPV) {
/* do nothing */
} else {
sprintf(error_msg,"Error decoding when bpv=%d. Error message:%s",i,grib_get_error_message(err));
perror(error_msg);
exit(1);
}
values = (double*)malloc(values_len*sizeof(double));
err = grib_get_double_array(h,"values",values,&values_len);
/*
* check if decoding of the data fails when the number of bpv
* is not supported; bpv allowed on decoding is bpv <= size of long
*/
if (i <= slong && err == 0) {
/* do nothing */
} else if (i > slong && err == GRIB_INVALID_BPV) {
/* do nothing */
} else {
sprintf(error_msg,"Error decoding when bpv=%d. Error message:%s",i,grib_get_error_message(err));
perror(error_msg);
exit(1);
}
free(values);
values = 0;
}
grib_handle_delete(h);
h=0;
fclose(in);
return 0;
}
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