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 <str_error.h>
  33 #include <errno.h>
  34 #include "../tester.h"
  35
  36 const char *test_stdio2(void)
  37 {
  38         FILE *file;
  39         const char *file_name = "/tmp/test";
  40
  41         TPRINTF("Open file \"%s\" for writing...", file_name);
  42         errno = 0;
  43         file = fopen(file_name, "wtx");
  44         if (file == NULL) {
  45                 TPRINTF("errno = %s\n", str_error_name(errno));
  46                 return "Failed opening file";
  47         } else
  48                 TPRINTF("OK\n");
  49
  50         TPRINTF("Write to file...");
  51         fprintf(file, "integer: %u, string: \"%s\"", 42, "Hello!");
  52         TPRINTF("OK\n");
  53
  54         TPRINTF("Close...");
  55         if (fclose(file) != 0) {
  56                 TPRINTF("errno = %s\n", str_error_name(errno));
  57                 return "Failed closing file";
  58         } else
  59                 TPRINTF("OK\n");
  60
  61         TPRINTF("Open file \"%s\" for reading...", file_name);
  62         file = fopen(file_name, "rt");
  63         if (file == NULL) {
  64                 TPRINTF("errno = %s\n", str_error_name(errno));
  65                 return "Failed opening file";
  66         } else
  67                 TPRINTF("OK\n");
  68
  69         TPRINTF("File contains:\n");
  70         while (true) {
  71                 int c = fgetc(file);
  72                 if (c == EOF)
  73                         break;
  74                 TPRINTF("%c", c);
  75         }
  76
  77         TPRINTF("\nClose...");
  78         if (fclose(file) != 0) {
  79                 TPRINTF("errno = %s\n", str_error_name(errno));
  80                 return "Failed closing file";
  81         } else
  82                 TPRINTF("OK\n");
  83
  84         return NULL;
  85 }