/*

* Copyright 2013 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 <assert.h>

#include <stdio.h>

#include <string.h>

#include <errno.h>

#include <emscripten.h>

int main() {

FILE *file;

int res;

char buffer[512];

// write something locally with node

EM_ASM(

var fs = require('fs');

fs.writeFileSync('foobar.txt', 'yeehaw');

);

// read and validate the contents of the file

file = fopen("foobar.txt", "r");

assert(file);

res = fread(buffer, sizeof(char), 6, file);

assert(res == 6);

buffer[6] = '\0';

fclose(file);

printf("fread -> '%s'\n", buffer);

assert(!strcmp(buffer, "yeehaw"));

// write out something new

file = fopen("foobar.txt", "w");

assert(file);

res = fwrite("cheez", sizeof(char), 5, file);

assert(res == 5);

fclose(file);

// validate the changes were persisted to the underlying fs

EM_ASM(

var fs = require('fs');

var contents = fs.readFileSync('foobar.txt', { encoding: 'utf8' });

assert(contents === 'cheez');

);

file = fopen("csfsq", "r");

assert(file == NULL);

assert(errno == ENOENT);

puts("success");

return 0;

}