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/* Simple test of putwc in the C locale.
Copyright (C) 2000-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <error.h>
#include <stdio.h>
#include <stdlib.h>
#include <wchar.h>
static const char outname[] = OBJPFX "tst_putwc.temp";
/* Prototype for our test function. */
int do_test (void);
#define TEST_FUNCTION do_test ()
/* This defines the `main' function and some more. */
#include <test-skeleton.c>
int
do_test (void)
{
const wchar_t str[] = L"This is a test of putwc\n";
wchar_t buf[100];
size_t n = 0;
FILE *fp;
int res = 0;
add_temp_file (outname);
fp = fopen (outname, "w+");
if (fp == NULL)
error (EXIT_FAILURE, errno, "cannot open temporary file");
for (n = 0; str[n] != L'\0'; ++n)
putwc (str[n], fp);
/* First try reading after rewinding. */
rewind (fp);
wmemset (buf, L'\0', sizeof (buf) / sizeof (buf[0]));
n = 0;
while (! feof (fp) && n < sizeof (buf) - 1)
{
buf[n] = getwc (fp);
if (buf[n] == WEOF)
break;
++n;
}
buf[n] = L'\0';
if (wcscmp (buf, L"This is a test of putwc\n") != 0)
{
puts ("first comparison failed");
res = 1;
}
/* Now close the file, open it again, and read again. */
if (fclose (fp) != 0)
{
printf ("failure during fclose: %m\n");
res = 1;
}
fp = fopen (outname, "r");
if (fp == NULL)
{
printf ("cannot reopen file: %m\n");
return 1;
}
/* We can remove the file now. */
remove (outname);
wmemset (buf, L'\0', sizeof (buf) / sizeof (buf[0]));
n = 0;
while (! feof (fp) && n < sizeof (buf) - 1)
{
buf[n] = getwc (fp);
if (buf[n] == WEOF)
break;
++n;
}
buf[n] = L'\0';
if (wcscmp (buf, L"This is a test of putwc\n") != 0)
{
puts ("second comparison failed");
res = 1;
}
if (fclose (fp) != 0)
{
printf ("failure during fclose: %m\n");
res = 1;
}
/* Next test: write a bit more than a few bytes. */
fp = fopen (outname, "w");
if (fp == NULL)
error (EXIT_FAILURE, errno, "cannot open temporary file");
for (n = 0; n < 4098; ++n)
putwc (n & 255, fp);
fclose (fp);
return res;
}
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