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  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 <errno.h>
  32. #include "../tester.h"
  33.  
  34. #define BUF_SIZE 32
  35. static char buf[BUF_SIZE + 1];
  36.  
  37. char * test_stdio1(bool quiet)
  38. {
  39.     FILE *f;
  40.     char *file_name = "/readme";
  41.     size_t n;
  42.     int c;
  43.  
  44.     printf("Open file '%s'\n", file_name);
  45.     errno = 0;
  46.     f = fopen(file_name, "rt");
  47.  
  48.     if (f == NULL) printf("errno = %d\n", errno);
  49.  
  50.     if (f == NULL)
  51.         return "Failed opening file.";
  52.  
  53.     n = fread(buf, 1, BUF_SIZE, f);
  54.     if (ferror(f)) {
  55.         fclose(f);
  56.         return "Failed reading file.";
  57.     }
  58.  
  59.     printf("Read %d bytes.\n", n);
  60.  
  61.     buf[n] = '\0';
  62.     printf("Read string '%s'.\n", buf);
  63.  
  64.     printf("Seek to beginning.\n");
  65.     if (fseek(f, 0, SEEK_SET) != 0) {
  66.         fclose(f);
  67.         return "Failed seeking.";
  68.     }
  69.  
  70.     printf("Read using fgetc().\n");
  71.     while (true) {
  72.         c = fgetc(f);
  73.         if (c == EOF) break;
  74.  
  75.         printf("'%c'", c);
  76.     }
  77.  
  78.     printf("[EOF]\n");
  79.     printf("Closing.\n");
  80.  
  81.     if (fclose(f) != 0)
  82.         return "Failed closing.";
  83.  
  84.     return NULL;
  85. }
  86.