// Copyright 2016 The Emscripten Authors. All rights reserved.

// Emscripten is available under two separate licenses, the MIT license and the

// University of Illinois/NCSA Open Source License. Both these licenses can be

// found in the LICENSE file.

#include <string.h>

#include <stdio.h>

#include <math.h>

#include <assert.h>

#include <emscripten/fetch.h>

int main()

{

emscripten_fetch_attr_t attr;

emscripten_fetch_attr_init(&attr);

attr.attributes = EMSCRIPTEN_FETCH_REPLACE | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | EMSCRIPTEN_FETCH_WAITABLE;

emscripten_fetch_t *fetch = emscripten_fetch(&attr, "gears.png");

assert(fetch != 0);

memset(&attr, 0, sizeof(attr)); // emscripten_fetch() must be able to operate without referencing to this structure after the call.

printf("Main thread waiting for fetch to finish...\n");

emscripten_fetch_wait(fetch, INFINITY);

printf("Main thread waiting for fetch to finish done...\n");

assert(fetch->data != 0);

assert(fetch->numBytes > 0);

assert(fetch->totalBytes == fetch->numBytes);

assert(fetch->readyState == 4/*DONE*/);

assert(fetch->status == 200);

uint8_t checksum = 0;

for(int i = 0; i < fetch->numBytes; ++i)

checksum ^= fetch->data[i];

printf("Data checksum: %02X\n", checksum);

assert(checksum == 0x08);

emscripten_fetch_close(fetch);

return 0;

}