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/* asprintf(), for libreswan
*
* Copyright (C) 2020 Andrew Cagney
*
* 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 2 of the License, or (at your
* option) any later version. See <https://www.gnu.org/licenses/gpl2.txt>.
*
* 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.
*/
#include <stdio.h>
#include <stdarg.h>
#include "passert.h"
#include "lswalloc.h"
char *alloc_vprintf(const char *fmt, va_list master_ap /* must va_copy */)
{
int length;
{
va_list ap;
va_copy(ap, master_ap);
length = vsnprintf(NULL, 0, fmt, ap);
va_end(ap);
}
passert(length >= 0);
length++; /* space for '\0' */
char *buf = alloc_things(char, length, fmt);
{
va_list ap;
va_copy(ap, master_ap);
vsnprintf(buf, length, fmt, ap);
va_end(ap);
}
return buf;
}
char *alloc_printf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
char *d = alloc_vprintf(fmt, ap);
va_end(ap);
return d;
}
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