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Commit	Line	Data
	1	/* $OpenBSD: asprintf.c,v 1.8 2002/02/19 19:39:36 millert Exp $ */
	2
	3	/*
	4	* Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
	5	* All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions and the following disclaimer.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
	15	* 3. The name of the author may not be used to endorse or promote products
	16	* derived from this software without specific prior written permission.
	17	*
	18	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
	19	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
	20	* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
	21	* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	22	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	23	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
	24	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	25	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	26	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	27	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	28	*/
	29
	30	#include <sys/cdefs.h>
	31	__FBSDID("$FreeBSD: src/lib/libc/stdio/asprintf.c,v 1.13 2002/09/26 13:09:48 tjr Exp $");
	32
	33	#include "xlocale_private.h"
	34
	35	#include <stdio.h>
	36	#include <stdlib.h>
	37	#include <errno.h>
	38	#include <stdarg.h>
	39
	40	#include "local.h"
	41
	42	int
	43	asprintf(char *str, char const fmt, ...)
	44	{
	45	int ret;
	46	va_list ap;
	47	FILE f;
	48	struct __sFILEX ext;
	49
	50	f._file = -1;
	51	f._flags = __SWR \| __SSTR \| __SALC;
	52	f._bf._base = f._p = (unsigned char *)malloc(128);
	53	if (f._bf._base == NULL) {
	54	*str = NULL;
	55	errno = ENOMEM;
	56	return (-1);
	57	}
	58	f._bf._size = f._w = 127; /* Leave room for the NUL */
	59	f._extra = &ext;
	60	INITEXTRA(&f);
	61	va_start(ap, fmt);
	62	ret = __vfprintf(&f, __current_locale(), fmt, ap); /* Use unlocked __vfprintf */
	63	va_end(ap);
	64	if (ret < 0) {
	65	free(f._bf._base);
	66	*str = NULL;
	67	errno = ENOMEM;
	68	return (-1);
	69	}
	70	*f._p = '\0';
	71	str = (char )f._bf._base;
	72	return (ret);
	73	}
	74
	75	int
	76	asprintf_l(char *str, locale_t loc, char const fmt, ...)
	77	{
	78	int ret;
	79	va_list ap;
	80	FILE f;
	81	struct __sFILEX ext;
	82
	83	NORMALIZE_LOCALE(loc);
	84	f._file = -1;
	85	f._flags = __SWR \| __SSTR \| __SALC;
	86	f._bf._base = f._p = (unsigned char *)malloc(128);
	87	if (f._bf._base == NULL) {
	88	*str = NULL;
	89	errno = ENOMEM;
	90	return (-1);
	91	}
	92	f._bf._size = f._w = 127; /* Leave room for the NUL */
	93	f._extra = &ext;
	94	INITEXTRA(&f);
	95	va_start(ap, fmt);
	96	ret = __vfprintf(&f, loc, fmt, ap); /* Use unlocked __vfprintf */
	97	va_end(ap);
	98	if (ret < 0) {
	99	free(f._bf._base);
	100	*str = NULL;
	101	errno = ENOMEM;
	102	return (-1);
	103	}
	104	*f._p = '\0';
	105	str = (char )f._bf._base;
	106	return (ret);
	107	}