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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.  
  36. static char buf[BUF_SIZE + 1];
  37.  
  38. char *test_stdio1(void)
  39. {
  40.     FILE *file;
  41.     char *file_name = "/readme";
  42.    
  43.     TPRINTF("Open file \"%s\"...", file_name);
  44.     errno = 0;
  45.     file = fopen(file_name, "rt");
  46.     if (file == NULL) {
  47.         TPRINTF("errno = %d\n", errno);
  48.         return "Failed opening file";
  49.     } else
  50.         TPRINTF("OK\n");
  51.    
  52.     TPRINTF("Read file...");
  53.     size_t cnt = fread(buf, 1, BUF_SIZE, file);
  54.     if (ferror(file)) {
  55.         TPRINTF("errno = %d\n", errno);
  56.         fclose(file);
  57.         return "Failed reading file";
  58.     } else
  59.         TPRINTF("OK\n");
  60.    
  61.     buf[cnt] = '\0';
  62.     TPRINTF("Read %u bytes, string \"%s\"\n", cnt, buf);
  63.    
  64.     TPRINTF("Seek to beginning...");
  65.     if (fseek(file, 0, SEEK_SET) != 0) {
  66.         TPRINTF("errno = %d\n", errno);
  67.         fclose(file);
  68.         return "Failed seeking in file";
  69.     } else
  70.         TPRINTF("OK\n");
  71.    
  72.     TPRINTF("Read using fgetc()...");
  73.     while (true) {
  74.         int c = fgetc(file);
  75.         if (c == EOF)
  76.             break;
  77.        
  78.         TPRINTF(".");
  79.     }
  80.     TPRINTF("[EOF]\n");
  81.    
  82.     TPRINTF("Close...");
  83.     if (fclose(file) != 0) {
  84.         TPRINTF("errno = %d\n", errno);
  85.         return "Failed closing file";
  86.     } else
  87.         TPRINTF("OK\n");
  88.    
  89.     return NULL;
  90. }
  91.