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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 <iostream>
#include "grib_api_internal.h"
#include "eccodes.h"
#define SIZE 1024 * 1024 * 20
static void deleter(void* data)
{
delete[] static_cast<unsigned char*>(data);
}
static int test_message_ownership(const char* filename) // , size_t* previous_end_of_message)
{
FILE* in = fopen(filename, "r");
if (!in) {
printf("Error opening file %s\n", filename);
return 1;
}
while (true) {
size_t buf_len = SIZE;
void* buf = new unsigned char[SIZE];
int err = wmo_read_any_from_file(in, buf, &buf_len);
if (err == GRIB_END_OF_FILE && buf_len == 0) {
break;
}
if (err != GRIB_SUCCESS) {
printf("Error reading message at offset: %s\n", codes_get_error_message(err));
return err;
}
codes_handle* h = codes_handle_new_from_message(NULL, buf, buf_len);
if (!h) {
printf("Error creating handle at offset\n");
return 1;
}
err = codes_handle_change_buffer_ownership(h, deleter);
if (err != GRIB_SUCCESS) {
printf("Error taking message ownership at offset: %s\n", codes_get_error_message(err));
codes_handle_delete(h);
return err;
}
codes_handle_delete(h);
// codes_context_free(NULL, buf); // Don't free the buffer here. Freed by codes_handle_delete
}
fclose(in);
return 0;
}
static long fread_wrapper(void* stream_data, void* buffer, long len) {
return fread(buffer, 1, len, (FILE*) stream_data);
}
static int test_codes_handle_from_stream(const char* filename)
{
FILE* in = fopen(filename, "r");
if (!in) {
printf("Error opening file %s\n", filename);
return 1;
}
codes_handle* h = NULL;
int err = 0;
while ((h = codes_handle_new_from_stream(NULL, reinterpret_cast<void*>(in), fread_wrapper, &err)) != NULL) {
if (err != GRIB_SUCCESS) {
printf("Error reading message from stream: %s\n", codes_get_error_message(err));
return err;
}
long paramId = 0;
err = codes_get_long(h, "paramId", ¶mId); // Just a dummy operation
if (err != GRIB_SUCCESS) {
printf("Error getting paramId: %s\n", codes_get_error_message(err));
codes_handle_delete(h);
return err;
}
codes_handle_delete(h);
}
fclose(in);
return 0;
}
size_t posInStream = 0;
static long fread_wrapper_with_offset(void* stream_data, void* buffer, long len) {
size_t nBytesRead = fread(buffer, 1, len, (FILE*) stream_data);
posInStream += nBytesRead;
return nBytesRead;
}
static int test_codes_handle_from_stream_with_offset(const char* filename)
{
std::cout << "Testing codes_handle_new_from_stream with offset..." << std::endl;
FILE* in = fopen(filename, "r");
if (!in) {
printf("Error opening file %s\n", filename);
return 1;
}
codes_handle* h = NULL;
int err = 0;
while ((h = codes_handle_new_from_stream(NULL, reinterpret_cast<void*>(in), fread_wrapper_with_offset, &err)) != NULL) {
if (err != GRIB_SUCCESS) {
printf("Error reading message from stream: %s\n", codes_get_error_message(err));
return err;
}
size_t messageSize = 0;
err = codes_get_message_size(h, &messageSize);
if (err != GRIB_SUCCESS) {
printf("Error getting message length: %s\n", codes_get_error_message(err));
codes_handle_delete(h);
return err;
}
std::cout << "Message offset: " << posInStream - messageSize << " size: " << messageSize << std::endl;
long paramId = 0;
err = codes_get_long(h, "paramId", ¶mId); // Just a dummy operation
if (err != GRIB_SUCCESS) {
printf("Error getting paramId: %s\n", codes_get_error_message(err));
codes_handle_delete(h);
return err;
}
codes_handle_delete(h);
}
fclose(in);
return 0;
}
int main(int argc, char** argv)
{
int err = 0;
if (argc != 2) return 1;
err = test_message_ownership(argv[1]);
if (err) return err;
err = test_codes_handle_from_stream(argv[1]);
if (err) return err;
// TODO(maee): Check why this fails on Windows?
//#ifndef ECCODES_ON_WINDOWS
err = test_codes_handle_from_stream_with_offset(argv[1]);
if (err) return err;
//#endif
return 0;
}
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