libio/tst_putwc.c

   1 /* Simple test of putwc in the C locale.
   2    Copyright (C) 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <errno.h>
  22 #include <error.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <wchar.h>
  26
  27 static const char outname[] = OBJPFX "tst_putwc.temp";
  28
  29
  30 #define TEST_FUNCTION do_test ()
  31 int
  32 do_test (void)
  33 {
  34   const wchar_t str[] = L"This is a test of putwc\n";
  35   wchar_t buf[100];
  36   size_t n = 0;
  37   FILE *fp;
  38   int res = 0;
  39
  40   fp = fopen (outname, "w+");
  41   if (fp == NULL)
  42     error (EXIT_FAILURE, errno, "cannot open temporary file");
  43
  44   for (n = 0; str[n] != L'\0'; ++n)
  45     putwc (str[n], fp);
  46
  47   /* First try reading after rewinding.  */
  48   rewind (fp);
  49
  50   wmemset (buf, L'\0', sizeof (buf) / sizeof (buf[0]));
  51   n = 0;
  52   while (! feof (fp) && n < sizeof (buf) - 1)
  53     {
  54       buf[n] = getwc (fp);
  55       if (buf[n] == WEOF)
  56         break;
  57       ++n;
  58     }
  59   buf[n] = L'\0';
  60
  61   if (wcscmp (buf, L"This is a test of putwc\n") != 0)
  62     {
  63       puts ("first comparison failed");
  64       res = 1;
  65     }
  66
  67   /* Now close the file, open it again, and read again.  */
  68   if (fclose (fp) != 0)
  69     {
  70       printf ("failure during fclose(): %m");
  71       res = 1;
  72     }
  73
  74   fp = fopen (outname, "r");
  75   if (fp == NULL)
  76     error (EXIT_FAILURE, errno, "cannot reopen file");
  77
  78   /* We can remove the file now.  */
  79   remove (outname);
  80
  81   wmemset (buf, L'\0', sizeof (buf) / sizeof (buf[0]));
  82   n = 0;
  83   while (! feof (fp) && n < sizeof (buf) - 1)
  84     {
  85       buf[n] = getwc (fp);
  86       if (buf[n] == WEOF)
  87         break;
  88       ++n;
  89     }
  90   buf[n] = L'\0';
  91
  92   if (wcscmp (buf, L"This is a test of putwc\n") != 0)
  93     {
  94       puts ("second comparison failed");
  95       res = 1;
  96     }
  97
  98   if (fclose (fp) != 0)
  99     {
 100       puts ("failure during fclose()");
 101       res = 1;
 102     }
 103
 104   /* Next test: write a bit more than a few bytes.  */
 105   fp = fopen (outname, "w");
 106   if (fp == NULL)
 107     error (EXIT_FAILURE, errno, "cannot open temporary file");
 108
 109   for (n = 0; n < 4098; ++n)
 110     putwc (n & 255, fp);
 111
 112   fclose (fp);
 113
 114   return res;
 115 }
 116
 117
 118 #include "../test-skeleton.c"