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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 <stdio.h>
#include "eccodes.h"
#undef NDEBUG
#include <assert.h>
int main(int argc, char* argv[])
{
FILE* in = NULL;
FILE* out = NULL;
codes_handle* source_handle = NULL;
const void* buffer = NULL;
int err = 0;
int count = 0;
long totalLength_src = 0, totalLength_dst = 0;
long edition = 0, isGridded_src = 0, bitmapPresent = 0;
long isConstant_src = 0, isConstant_dst = 0;
long dataSectionLength_src = 0, dataSectionLength_dst = 0;
size_t messageLength_src = 0, messageLength_dst = 0;
long lVal = -1;
if (argc != 3) {
// Usage: prog input_file ouput_file
return 1;
}
in = fopen(argv[1], "rb");
assert(in);
out = fopen(argv[2], "wb");
assert(out);
while ((source_handle = codes_handle_new_from_file(0, in, PRODUCT_GRIB, &err)) != NULL) {
codes_handle* clone_handle = codes_handle_clone_headers_only(source_handle);
assert(clone_handle);
printf("Processing message %d\n", ++count);
lVal=-1;
GRIB_CHECK( grib_get_long(source_handle, "isMessageValid", &lVal), 0);
//fprintf(stderr, "source_handle: isMessageValid=%ld\n", lVal);
assert( lVal == 1 );
lVal=-1;
GRIB_CHECK( grib_get_long(clone_handle, "isMessageValid", &lVal), 0);
//fprintf(stderr, "clone_handle: isMessageValid=%ld\n", lVal);
assert( lVal == 1 );
codes_get_long(source_handle, "isConstant", &isConstant_src);
codes_get_long(source_handle, "isGridded", &isGridded_src);
if (isGridded_src && !isConstant_src) {
CODES_CHECK(codes_get_message(source_handle, &buffer, &messageLength_src), 0);
CODES_CHECK(codes_get_message(clone_handle, &buffer, &messageLength_dst), 0);
assert( messageLength_src > messageLength_dst );
CODES_CHECK(codes_get_long(source_handle, "totalLength", &totalLength_src), 0);
CODES_CHECK(codes_get_long(clone_handle, "totalLength", &totalLength_dst), 0);
assert(totalLength_src > totalLength_dst);
CODES_CHECK(codes_get_long(source_handle, "edition", &edition), 0);
if (edition == 1) {
CODES_CHECK(codes_get_long(source_handle, "section4Length", &dataSectionLength_src), 0);
CODES_CHECK(codes_get_long(clone_handle, "section4Length", &dataSectionLength_dst), 0);
} else if (edition == 2) {
CODES_CHECK(codes_get_long(source_handle, "section7Length", &dataSectionLength_src), 0);
CODES_CHECK(codes_get_long(clone_handle, "section7Length", &dataSectionLength_dst), 0);
}
assert( dataSectionLength_src > dataSectionLength_dst );
codes_get_long(clone_handle, "bitmapPresent", &bitmapPresent);
assert(bitmapPresent == 0);
codes_get_long(clone_handle, "isConstant", &isConstant_dst);
assert(isConstant_dst == 1);
}
// write out the cloned buffer
if (fwrite(buffer, 1, messageLength_dst, out) != messageLength_dst) {
perror(argv[1]);
return 1;
}
codes_handle_delete(clone_handle);
codes_handle_delete(source_handle);
}
fclose(out);
fclose(in);
printf("All OK\n");
return 0;
}
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