uspace/app/tester/stdio/stdio2.c

   1 /*
   2  * Copyright (c) 2008 Jiri Svoboda
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <stddef.h>
  32 #include <errno.h>
  33 #include "../tester.h"
  34
  35 const char *test_stdio2(void)
  36 {
  37         FILE *file;
  38         const char *file_name = "/test";
  39
  40         TPRINTF("Open file \"%s\" for writing...", file_name);
  41         errno = 0;
  42         file = fopen(file_name, "wt");
  43         if (file == NULL) {
  44                 TPRINTF("errno = %d\n", errno);
  45                 return "Failed opening file";
  46         } else
  47                 TPRINTF("OK\n");
  48
  49         TPRINTF("Write to file...");
  50         fprintf(file, "integer: %u, string: \"%s\"", 42, "Hello!");
  51         TPRINTF("OK\n");
  52
  53         TPRINTF("Close...");
  54         if (fclose(file) != 0) {
  55                 TPRINTF("errno = %d\n", errno);
  56                 return "Failed closing file";
  57         } else
  58                 TPRINTF("OK\n");
  59
  60         TPRINTF("Open file \"%s\" for reading...", file_name);
  61         file = fopen(file_name, "rt");
  62         if (file == NULL) {
  63                 TPRINTF("errno = %d\n", errno);
  64                 return "Failed opening file";
  65         } else
  66                 TPRINTF("OK\n");
  67
  68         TPRINTF("File contains:\n");
  69         while (true) {
  70                 int c = fgetc(file);
  71                 if (c == EOF)
  72                         break;
  73                 TPRINTF("%c", c);
  74         }
  75
  76         TPRINTF("\nClose...");
  77         if (fclose(file) != 0) {
  78                 TPRINTF("errno = %d\n", errno);
  79                 return "Failed closing file";
  80         } else
  81                 TPRINTF("OK\n");
  82
  83         return NULL;
  84 }