1 bbcba3ed 2022-01-10 op /*
 2 bbcba3ed 2022-01-10 op  * Copyright (c) 2006 Nicholas Marriott <nicholas.marriott@gmail.com>
 3 bbcba3ed 2022-01-10 op  *
 4 bbcba3ed 2022-01-10 op  * Permission to use, copy, modify, and distribute this software for any
 5 bbcba3ed 2022-01-10 op  * purpose with or without fee is hereby granted, provided that the above
 6 bbcba3ed 2022-01-10 op  * copyright notice and this permission notice appear in all copies.
 7 bbcba3ed 2022-01-10 op  *
 8 bbcba3ed 2022-01-10 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 bbcba3ed 2022-01-10 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 bbcba3ed 2022-01-10 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 bbcba3ed 2022-01-10 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 bbcba3ed 2022-01-10 op  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
13 bbcba3ed 2022-01-10 op  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
14 bbcba3ed 2022-01-10 op  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 bbcba3ed 2022-01-10 op  */
16 bbcba3ed 2022-01-10 op 
17 bbcba3ed 2022-01-10 op #include <sys/types.h>
18 bbcba3ed 2022-01-10 op 
19 bbcba3ed 2022-01-10 op #include <stdarg.h>
20 bbcba3ed 2022-01-10 op #include <stdio.h>
21 bbcba3ed 2022-01-10 op #include <string.h>
22 bbcba3ed 2022-01-10 op #include <stdlib.h>
23 bbcba3ed 2022-01-10 op 
24 bbcba3ed 2022-01-10 op #include "compat.h"
25 bbcba3ed 2022-01-10 op 
26 bbcba3ed 2022-01-10 op int
27 bbcba3ed 2022-01-10 op asprintf(char **ret, const char *fmt, ...)
28 bbcba3ed 2022-01-10 op {
29 bbcba3ed 2022-01-10 op 	va_list	ap;
30 bbcba3ed 2022-01-10 op 	int	n;
31 bbcba3ed 2022-01-10 op 
32 bbcba3ed 2022-01-10 op 	va_start(ap, fmt);
33 bbcba3ed 2022-01-10 op 	n = vasprintf(ret, fmt, ap);
34 bbcba3ed 2022-01-10 op 	va_end(ap);
35 bbcba3ed 2022-01-10 op 
36 bbcba3ed 2022-01-10 op 	return (n);
37 bbcba3ed 2022-01-10 op }
38 bbcba3ed 2022-01-10 op 
39 bbcba3ed 2022-01-10 op int
40 bbcba3ed 2022-01-10 op vasprintf(char **ret, const char *fmt, va_list ap)
41 bbcba3ed 2022-01-10 op {
42 bbcba3ed 2022-01-10 op 	int	 n;
43 bbcba3ed 2022-01-10 op 	va_list  ap2;
44 bbcba3ed 2022-01-10 op 
45 bbcba3ed 2022-01-10 op 	va_copy(ap2, ap);
46 bbcba3ed 2022-01-10 op 
47 bbcba3ed 2022-01-10 op 	if ((n = vsnprintf(NULL, 0, fmt, ap)) < 0)
48 bbcba3ed 2022-01-10 op 		goto error;
49 bbcba3ed 2022-01-10 op 
50 bbcba3ed 2022-01-10 op 	if ((*ret = malloc(n + 1)) == NULL)
51 bbcba3ed 2022-01-10 op 		goto error;
52 bbcba3ed 2022-01-10 op 	if ((n = vsnprintf(*ret, n + 1, fmt, ap2)) < 0) {
53 bbcba3ed 2022-01-10 op 		free(*ret);
54 bbcba3ed 2022-01-10 op 		goto error;
55 bbcba3ed 2022-01-10 op 	}
56 bbcba3ed 2022-01-10 op 	va_end(ap2);
57 bbcba3ed 2022-01-10 op 
58 bbcba3ed 2022-01-10 op 	return (n);
59 bbcba3ed 2022-01-10 op 
60 bbcba3ed 2022-01-10 op error:
61 bbcba3ed 2022-01-10 op 	va_end(ap2);
62 bbcba3ed 2022-01-10 op 	*ret = NULL;
63 bbcba3ed 2022-01-10 op 	return (-1);
64 bbcba3ed 2022-01-10 op }