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[disorder] / lib / asprintf.c
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460b9539 1/*
2 * This file is part of DisOrder
5aff007d 3 * Copyright (C) 2004-2008 Richard Kettlewell
460b9539 4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18 * USA
19 */
14ad73b9 20/** @file lib/asprintf.c @brief printf() workalikes */
460b9539 21
05b75f8d 22#include "common.h"
460b9539 23
460b9539 24#include <stdarg.h>
25#include <stddef.h>
26#include <errno.h>
27
28#include "printf.h"
29#include "sink.h"
30#include "mem.h"
31#include "vector.h"
32#include "log.h"
33
d7b6f0d1 34/** @brief vasprintf() workalike without encoding errors
35 *
36 * This acts like vasprintf() except that it does not throw an error
37 * if you use a string outside the current locale's encoding rules,
38 * and it uses the memory allocation calls from @ref mem.h.
39 */
460b9539 40int byte_vasprintf(char **ptrp,
41 const char *fmt,
42 va_list ap) {
43 struct dynstr d;
44 int n;
45
46 dynstr_init(&d);
47 if((n = byte_vsinkprintf(sink_dynstr(&d), fmt, ap)) >= 0) {
48 dynstr_terminate(&d);
49 *ptrp = d.vec;
50 }
51 return n;
52}
53
d7b6f0d1 54/** @brief asprintf() workalike without encoding errors
55 *
56 * This acts like asprintf() except that it does not throw an error
57 * if you use a string outside the current locale's encoding rules,
58 * and it uses the memory allocation calls from @ref mem.h.
59 */
460b9539 60int byte_asprintf(char **ptrp,
61 const char *fmt,
62 ...) {
63 int n;
64 va_list ap;
65
66 va_start(ap, fmt);
67 n = byte_vasprintf(ptrp, fmt, ap);
68 va_end(ap);
69 return n;
70}
71
d7b6f0d1 72/** @brief asprintf() workalike without encoding errors
73 *
74 * This acts like asprintf() except that it does not throw an error if
75 * you use a string outside the current locale's encoding rules; it
76 * uses the memory allocation calls from @ref mem.h; and it terminates
77 * the program on error.
78 */
460b9539 79int byte_xasprintf(char **ptrp,
80 const char *fmt,
81 ...) {
82 int n;
83 va_list ap;
84
85 va_start(ap, fmt);
86 n = byte_xvasprintf(ptrp, fmt, ap);
87 va_end(ap);
88 return n;
89}
90
d7b6f0d1 91/** @brief vasprintf() workalike without encoding errors
92 *
93 * This acts like vasprintf() except that it does not throw an error
94 * if you use a string outside the current locale's encoding rules; it
95 * uses the memory allocation calls from @ref mem.h; and it terminates
96 * the program on error.
97 */
460b9539 98int byte_xvasprintf(char **ptrp,
99 const char *fmt,
100 va_list ap) {
101 int n;
102
103 if((n = byte_vasprintf(ptrp, fmt, ap)) < 0)
104 fatal(errno, "error calling byte_vasprintf");
105 return n;
106}
107
108/*
109Local Variables:
110c-basic-offset:2
111comment-column:40
112End:
113*/