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/*
* WallFire -- a comprehensive firewall administration tool.
*
* Copyright (C) 2001 Herv Eychenne <rv@wallfire.org>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
using namespace std;
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include "ostream_printf.h"
/* Make it use string_vprintf() ALL@@4 */
ostream&
ostream_vprintf(ostream& os, const char* fmt, va_list ap) {
int n, size = 100; /* Guess we need no more than 100 bytes. */
char *buf, *newbuf;
if ((buf = (char*)malloc(size)) == NULL)
return os;
while (1) {
/* Try to print in the allocated space. */
n = vsnprintf(buf, size, fmt, ap);
/* If that worked, print the string. */
if (n > -1 && n < size) {
os << buf;
free(buf);
return os;
}
/* Else try again with more space. */
if (n > -1) /* glibc 2.1 */
size = n + 1; /* precisely what is needed */
else /* glibc 2.0 */
size *= 2; /* twice the old size */
if ((newbuf = (char*)realloc(buf, size)) == NULL) {
free(buf);
return os;
}
buf = newbuf;
}
}
ostream&
ostream_printf(ostream& os, const char* fmt, ...) {
va_list ap;
va_start(ap, fmt);
ostream_vprintf(os, fmt, ap);
va_end(ap);
return os;
}
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