source: mainline/uspace/app/tester/stdio/stdio2.c@ 6b21292

/*
 * Copyright (c) 2008 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include "../tester.h"

char * test_stdio2(bool quiet)
{
        FILE *f;
        char *file_name = "/test";
        size_t n;
        int c;

        printf("Open file '%s' for writing\n", file_name);
        errno = 0;
        f = fopen(file_name, "wt");

        if (f == NULL)
                return "Failed opening file.";

        fprintf(f, "Integer: %d, string: '%s'\n", 42, "Hello!");
        if (fclose(f) != 0)
                return "Failed closing file.";

        printf("Open file '%s' for reading\n", file_name);

        f = fopen(file_name, "rt");
        if (f == NULL)
                return "Failed opening file.";

        printf("File contains:\n");
        while (true) {
                c = fgetc(f);
                if (c == EOF) break;
                putchar(c);
        }

        if (fclose(f) != 0)
                return "Failed closing file.";

        return NULL;
}