quakeforge/libs/util/va.c

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/*
va.c
varargs printf function
Copyright (C) 1996-1997 Id Software, 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 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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
2001-09-28 06:26:31 +00:00
static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdarg.h>
#include <stdio.h>
#include "QF/qtypes.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "compat.h"
/*
va
does a varargs printf into a temp buffer, so I don't need to have
varargs versions of all text functions.
*/
char *
va (const char *fmt, ...)
{
va_list args;
static char *string;
int size;
static int string_size;
va_start (args, fmt);
size = vsnprintf (string, string_size, fmt, args) + 1; // +1 for nul
//printf ("size = %d\n", size);
while (size <= 0 || size > string_size) {
if (size > 0)
string_size = (size + 1023) & ~1023; // 1k multiples
else
string_size += 1024;
string = realloc (string, string_size);
if (!string)
Sys_Error ("console: could not allocate %d bytes\n",
string_size);
size = vsnprintf (string, string_size, fmt, args) + 1;
//printf ("size = %d\n", size);
}
va_end (args);
return string;
}