mirror of https://github.com/ecmwf/eccodes.git
130 lines
3.2 KiB
C
130 lines
3.2 KiB
C
/*
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* Copyright 2005-2015 ECMWF.
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*
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* This software is licensed under the terms of the Apache Licence Version 2.0
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* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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*
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* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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*/
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/*
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* =====================================================================================
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*
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* Filename: bpv_limit.c
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*
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* Description: test setting the number of bpv before decoding and then encoding;
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* setting the wrong number of bpv should result in an exception
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*
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* Version: 1.0
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* Created: 30/03/10 16:07:51
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* Revision: none
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* Compiler: gcc
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*
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* Author: Cristian Codorean (mow), mow@ecmwf.int
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* Company: ECMWF
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*
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* =====================================================================================
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "grib_api.h"
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void usage(char* prog) {
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printf("usage: %s filein\n",prog);
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exit(1);
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}
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int main(int argc, char** argv) {
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int err = 0;
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size_t values_len=0;
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double *values = NULL;
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char error_msg[100] ;
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size_t slong = sizeof(long) * 8 ;
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int i;
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FILE* in = NULL;
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char* filename ;
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grib_handle *h = NULL;
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if (argc<2) usage(argv[0]);
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filename=argv[1];
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in = fopen(filename,"r");
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if(!in) {
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printf("ERROR: unable to open file %s\n",filename);
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return 1;
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}
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/* create new handle from a message in a file*/
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h = grib_handle_new_from_file(0,in,&err);
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if (h == NULL) {
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printf("Error: unable to create handle from file %s\n",filename);
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}
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for (i=0;i<255;i++) {
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/* get the size of the values array*/
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GRIB_CHECK(grib_get_size(h,"values",&values_len),0);
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values = (double*)malloc(values_len*sizeof(double));
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err = grib_get_double_array(h,"values",values,&values_len);
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GRIB_CHECK(grib_set_long(h,"bitsPerValue",i),0);
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err = grib_set_double_array(h,"values",values,values_len);
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free(values);
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values = 0;
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/*
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* check if encoding of the data fails when the number of bpv
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* is not supported; bpv allowed on decoding is bpv < size of long
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*/
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if (i < slong && err == 0) {
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/* do nothing */
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} else if (i >= slong && err == GRIB_INVALID_BPV) {
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/* do nothing */
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} else {
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sprintf(error_msg,"Error decoding when bpv=%d. Error message:%s",i,grib_get_error_message(err));
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perror(error_msg);
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exit(1);
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}
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values = (double*)malloc(values_len*sizeof(double));
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err = grib_get_double_array(h,"values",values,&values_len);
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/*
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* check if decoding of the data fails when the number of bpv
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* is not supported; bpv allowed on decoding is bpv <= size of long
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*/
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if (i <= slong && err == 0) {
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/* do nothing */
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} else if (i > slong && err == GRIB_INVALID_BPV) {
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/* do nothing */
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} else {
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sprintf(error_msg,"Error decoding when bpv=%d. Error message:%s",i,grib_get_error_message(err));
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perror(error_msg);
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exit(1);
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}
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free(values);
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values = 0;
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}
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grib_handle_delete(h);
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h=0;
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fclose(in);
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return 0;
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}
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