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/*
* Copyright (C) 2001 Federico Di Gregorio <fog@debian.org>
* Copyright (C) 1991, 1994-1999, 2000, 2001 Free Software Foundation, Inc.
*
* This code has been derived from an example in the glibc2 documentation.
* This file is part of the psycopg module.
*
* 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,
* 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* asprintf.c -- asprintf() implementation for braindamaged operating systems
* $Id$
*/
#ifndef _WIN32
#include <unistd.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#ifndef _WIN32
#include <sys/time.h>
#endif
#include <stdlib.h>
#ifdef _WIN32
#define vsnprintf _vsnprintf
#endif
int
asprintf(char **buffer, char *fmt, ...)
{
/* Guess we need no more than 200 chars of space. */
int size = 200;
int nchars;
va_list ap;
*buffer = (char*)malloc(size);
if (*buffer == NULL) return -1;
/* Try to print in the allocated space. */
va_start(ap, fmt);
nchars = vsnprintf(*buffer, size, fmt, ap);
va_end(ap);
if (nchars >= size)
{
char *tmpbuff;
/* Reallocate buffer now that we know how much space is needed. */
size = nchars+1;
tmpbuff = (char*)realloc(*buffer, size);
if (tmpbuff == NULL) { /* we need to free it*/
free(*buffer);
return -1;
}
*buffer=tmpbuff;
/* Try again. */
va_start(ap, fmt);
nchars = vsnprintf(*buffer, size, fmt, ap);
va_end(ap);
}
if (nchars < 0) return nchars;
return size;
}
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