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/* Test of vsnprintf() function.
Copyright (C) 2007 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 <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#define ASSERT(expr) \
do \
{ \
if (!(expr)) \
{ \
fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
abort (); \
} \
} \
while (0)
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;
for (size = 0; size <= 8; size++)
{
memcpy (buf, "DEADBEEF", 8);
retval = my_snprintf (buf, size, "%d", 12345);
if (size < 6)
{
#if CHECK_VSNPRINTF_POSIX
ASSERT (retval < 0 || retval >= size);
#endif
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 (retval == 5);
ASSERT (memcmp (buf, "12345\0EF", 8) == 0);
}
}
return 0;
}
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