/*	$OpenBSD: asprintf.c,v 1.5 1998/08/14 21:39:39 deraadt Exp $	*/ /* * Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products *    derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #if defined(LIBC_SCCS) && !defined(lint)static char rcsid[] = "$OpenBSD: asprintf.c,v 1.5 1998/08/14 21:39:39 deraadt Exp $";#endif /* LIBC_SCCS and not lint */ #include <stdio.h>#include <stdlib.h>#include <errno.h>#if __STDC__#include <stdarg.h>#else#include <varargs.h>#endif int#if __STDC__asprintf(char **str, char const *fmt, ...)#elseasprintf(str, fmt, va_alist)	char **str;	const char *fmt;	va_dcl#endif{	int ret;	va_list ap;	FILE f;	unsigned char *_base; #if __STDC__	va_start(ap, fmt);#else	va_start(ap);#endif	f._file = -1;	f._flags = __SWR | __SSTR | __SALC;	f._bf._base = f._p = (unsigned char *)malloc(128);	if (f._bf._base == NULL) {		*str = NULL;		errno = ENOMEM;		return (-1);	}	f._bf._size = f._w = 127;		/* Leave room for the NULL */	ret = vfprintf(&f, fmt, ap);	*f._p = '\0';	va_end(ap);	_base = realloc(f._bf._base, f._bf._size + 1);	if (_base == NULL) {		errno = ENOMEM;		ret = -1;	}	f._bf._base = _base;	*str = (char *)f._bf._base;	return (ret);}