1/* $OpenBSD: vasprintf.c,v 1.4 1998/06/21 22:13:47 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/vasprintf.c,v 1.19 2008/04/17 22:17:54 jhb Exp $"); 32 33#include "xlocale_private.h" 34 35#include <stdio.h> 36#include <stdlib.h> 37#include <errno.h> 38#include "local.h" 39 40__private_extern__ int 41_vasprintf(printf_comp_t __restrict pc, printf_domain_t __restrict domain, char ** __restrict str, locale_t __restrict loc, const char * __restrict fmt, __va_list ap) 42{ 43 int ret; 44 FILE f; 45 struct __sFILEX ext; 46 f._extra = &ext; 47 INITEXTRA(&f); 48 49 f._file = -1; 50 f._flags = __SWR | __SSTR | __SALC; 51 f._bf._base = f._p = (unsigned char *)malloc(128); 52 if (f._bf._base == NULL) { 53 *str = NULL; 54 errno = ENOMEM; 55 return (-1); 56 } 57 f._bf._size = f._w = 127; /* Leave room for the NUL */ 58 f._orientation = 0; 59 memset(&f._mbstate, 0, sizeof(mbstate_t)); 60 ret = __v2printf(pc, domain, &f, loc, fmt, ap); 61 if (ret < 0) { 62 free(f._bf._base); 63 *str = NULL; 64 errno = ENOMEM; 65 return (-1); 66 } 67 *f._p = '\0'; 68 *str = (char *)f._bf._base; 69 return (ret); 70} 71 72int 73vasprintf_l(char ** __restrict str, locale_t __restrict loc, const char * __restrict fmt, __va_list ap) 74{ 75 return _vasprintf(XPRINTF_PLAIN, NULL, str, loc, fmt, ap); 76} 77 78int 79vasprintf(char ** __restrict str, const char * __restrict fmt, __va_list ap) 80{ 81 return _vasprintf(XPRINTF_PLAIN, NULL, str, __current_locale(), fmt, ap); 82} 83