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/*
* Copyright (c) 2006 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "compat.h"
#include "xmalloc.h"
int
asprintf(char **ret, const char *fmt, ...)
{
va_list ap;
int n;
va_start(ap, fmt);
n = vasprintf(ret, fmt, ap);
va_end(ap);
return (n);
}
int
vasprintf(char **ret, const char *fmt, va_list ap)
{
int n;
va_list ap2;
va_copy(ap2, ap);
if ((n = vsnprintf(NULL, 0, fmt, ap)) < 0)
goto error;
*ret = xmalloc(n + 1);
if ((n = vsnprintf(*ret, n + 1, fmt, ap2)) < 0) {
free(*ret);
goto error;
}
va_end(ap2);
return (n);
error:
va_end(ap2);
*ret = NULL;
return (-1);
}
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