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 * Copyright (c) 2011 The FreeBSD Foundation 8 * All rights reserved. 9 * Portions of this software were developed by David Chisnall 10 * under sponsorship from the FreeBSD Foundation. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 24 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 25 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 26 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 29 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 31 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 32 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * $FreeBSD: head/lib/libc/stdio/vasprintf.c 227753 2011-11-20 14:45:42Z theraven $ 35 */ 36 37 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <errno.h> 41 #include "xlocale_private.h" 42 #include "local.h" 43 44 int 45 vasprintf_l(char **str, locale_t locale, const char *fmt, __va_list ap) 46 { 47 FILE f = FAKE_FILE; 48 int ret; 49 FIX_LOCALE(locale); 50 51 f.pub._flags = __SWR | __SSTR | __SALC; 52 f._bf._base = f.pub._p = malloc(128); 53 if (f._bf._base == NULL) { 54 *str = NULL; 55 errno = ENOMEM; 56 return (-1); 57 } 58 f._bf._size = f.pub._w = 127; /* Leave room for the NUL */ 59 ret = __vfprintf(&f, locale, fmt, ap); 60 if (ret < 0) { 61 free(f._bf._base); 62 *str = NULL; 63 errno = ENOMEM; 64 return (-1); 65 } 66 *f.pub._p = '\0'; 67 *str = (char *)f._bf._base; 68 return (ret); 69 } 70 int 71 vasprintf(char **str, const char *fmt, __va_list ap) 72 { 73 return vasprintf_l(str, __get_locale(), fmt, ap); 74 } 75