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/*
* (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 "grib_api_internal.h"
#ifndef ECCODES_ON_WINDOWS
#include <unistd.h>
#endif
int main(int argc, char* argv[])
{
off_t offsetin = 0, offsetout = 0;
off_t size = 100000000;
size_t rsizein = 10, rsizeout = 0;
double doff = 0;
FILE* f = 0;
char str[10];
int i;
if (argc != 2) return 1;
printf("sizeof(off_t)=%zu sizeof(long)=%zu\n", sizeof(off_t), sizeof(long));
f = fopen(argv[1], "r");
if (!f) {
printf("%s\n", strerror(errno));
exit(errno);
}
offsetin = size;
for (i = 0; i < 100000; i++) {
printf("i=%d ", i);
if (fseeko(f, offsetin, SEEK_SET)) {
printf("fseeko error\n");
printf("- %d - %s\n", errno, strerror(errno));
exit(1);
}
rsizeout = fread(str, 1, rsizein, f);
if (rsizeout != rsizein) {
printf("rsizein=%zu rsizeout=%zu\n", rsizein, rsizeout);
printf("end of file\n");
exit(1);
}
offsetout = ftello(f);
doff = (double)offsetout;
printf("%20.0f \n", doff);
if (offsetout != offsetin + rsizeout) {
printf("offset error: offsetout=%jd offsetin=%jd\n", offsetout, offsetin + rsizeout);
exit(1);
}
offsetin = offsetout + size;
}
fclose(f);
return 0;
}
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