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/* aprintf.c - asprintf functions for systems missing it
* Copyright (C) 1999 Robert Bihlmeyer <robbe@orcus.priv.at>
*
* 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.
*
* 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "asprintf.h"
#ifdef HAVE_VSNPRINTF
int asprintf(char **result, const char *fmt, ...)
{
va_list args;
int ret;
va_start(args, fmt);
ret = vasprintf(result, fmt, args);
va_end(args);
return ret;
}
int vasprintf(char **result, const char *fmt, va_list args)
{
#define INITIAL_SIZE 100
char *s;
int len;
s = (char *)malloc(INITIAL_SIZE);
if (!s) {
*result = NULL;
return -1;
}
len = vsnprintf(s, INITIAL_SIZE, fmt, args);
if (len >= INITIAL_SIZE) {
s = (char *)realloc(s, len+1);
if (!s) {
*result = NULL;
return -1;
}
len = vsnprintf(s, len+1, fmt, args);
}
if (len >= 0)
*result = s;
else
*result = NULL;
return len;
}
#else
#include "vasprintf.c"
#endif
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