chiark / gitweb /
DisOrder 3.0
[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
22#include <config.h>
23#include "types.h"
24
25#include <stdio.h>
26#include <string.h>
27#include <stdarg.h>
28#include <stddef.h>
29#include <errno.h>
30
31#include "printf.h"
32#include "sink.h"
33#include "mem.h"
34#include "vector.h"
35#include "log.h"
36
d7b6f0d1 37/** @brief vasprintf() workalike without encoding errors
38 *
39 * This acts like vasprintf() except that it does not throw an error
40 * if you use a string outside the current locale's encoding rules,
41 * and it uses the memory allocation calls from @ref mem.h.
42 */
460b9539 43int byte_vasprintf(char **ptrp,
44 const char *fmt,
45 va_list ap) {
46 struct dynstr d;
47 int n;
48
49 dynstr_init(&d);
50 if((n = byte_vsinkprintf(sink_dynstr(&d), fmt, ap)) >= 0) {
51 dynstr_terminate(&d);
52 *ptrp = d.vec;
53 }
54 return n;
55}
56
d7b6f0d1 57/** @brief asprintf() workalike without encoding errors
58 *
59 * This acts like asprintf() except that it does not throw an error
60 * if you use a string outside the current locale's encoding rules,
61 * and it uses the memory allocation calls from @ref mem.h.
62 */
460b9539 63int byte_asprintf(char **ptrp,
64 const char *fmt,
65 ...) {
66 int n;
67 va_list ap;
68
69 va_start(ap, fmt);
70 n = byte_vasprintf(ptrp, fmt, ap);
71 va_end(ap);
72 return n;
73}
74
d7b6f0d1 75/** @brief asprintf() workalike without encoding errors
76 *
77 * This acts like asprintf() except that it does not throw an error if
78 * you use a string outside the current locale's encoding rules; it
79 * uses the memory allocation calls from @ref mem.h; and it terminates
80 * the program on error.
81 */
460b9539 82int byte_xasprintf(char **ptrp,
83 const char *fmt,
84 ...) {
85 int n;
86 va_list ap;
87
88 va_start(ap, fmt);
89 n = byte_xvasprintf(ptrp, fmt, ap);
90 va_end(ap);
91 return n;
92}
93
d7b6f0d1 94/** @brief vasprintf() workalike without encoding errors
95 *
96 * This acts like vasprintf() except that it does not throw an error
97 * if you use a string outside the current locale's encoding rules; it
98 * uses the memory allocation calls from @ref mem.h; and it terminates
99 * the program on error.
100 */
460b9539 101int byte_xvasprintf(char **ptrp,
102 const char *fmt,
103 va_list ap) {
104 int n;
105
106 if((n = byte_vasprintf(ptrp, fmt, ap)) < 0)
107 fatal(errno, "error calling byte_vasprintf");
108 return n;
109}
110
111/*
112Local Variables:
113c-basic-offset:2
114comment-column:40
115End:
116*/