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/* Test of vsnprintf() function.
Copyright (C) 2007-2021 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <stdio.h>
#include "signature.h"
SIGNATURE_CHECK (vsnprintf, int, (char *, size_t, char const *, va_list));
#include <stdarg.h>
#include <string.h>
#include "macros.h"
static int
my_snprintf (char *buf, int size, const char *format, ...)
{
va_list args;
int ret;
va_start (args, format);
ret = vsnprintf (buf, size, format, args);
va_end (args);
return ret;
}
int
main (int argc, char *argv[])
{
char buf[8];
int size;
int retval;
retval = my_snprintf (NULL, 0, "%d", 12345);
ASSERT (retval == 5);
for (size = 0; size <= 8; size++)
{
memcpy (buf, "DEADBEEF", 8);
retval = my_snprintf (buf, size, "%d", 12345);
ASSERT (retval == 5);
if (size < 6)
{
if (size > 0)
{
ASSERT (memcmp (buf, "12345", size - 1) == 0);
ASSERT (buf[size - 1] == '\0' || buf[size - 1] == '0' + size);
}
#if !CHECK_VSNPRINTF_POSIX
if (size > 0)
#endif
ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
}
else
{
ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
}
}
/* Test the support of the POSIX/XSI format strings with positions. */
{
char result[100];
retval = my_snprintf (result, sizeof (result), "%2$d %1$d", 33, 55);
ASSERT (strcmp (result, "55 33") == 0);
ASSERT (retval == strlen (result));
}
return 0;
}
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