xref: /freebsd/lib/libc/stdio/xprintf_vis.c (revision 4e8d558c)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2005 Poul-Henning Kamp
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  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 
31 #include <namespace.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <stdlib.h>
35 #include <wchar.h>
36 #include <vis.h>
37 #include <assert.h>
38 #include <sys/time.h>
39 #include "printf.h"
40 
41 int
42 __printf_arginfo_vis(const struct printf_info *pi, size_t n, int *argt)
43 {
44 
45 	assert(n >= 1);
46 	argt[0] = PA_POINTER;
47 	return (1);
48 }
49 
50 int
51 __printf_render_vis(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
52 {
53 	char *p, *buf;
54 	unsigned l;
55 	int ret;
56 
57 	ret = 0;
58 	p = *((char **)arg[0]);
59 	if (p == NULL)
60 		return (__printf_out(io, pi, "(null)", 6));
61 	if (pi->prec >= 0)
62 		l = pi->prec;
63 	else
64 		l = strlen(p);
65 	buf = malloc(l * 4 + 1);
66 	if (buf == NULL)
67 		return (-1);
68 	if (pi->showsign)
69 		ret = strvisx(buf, p, l, VIS_WHITE | VIS_HTTPSTYLE);
70 	else if (pi->pad == '0')
71 		ret = strvisx(buf, p, l, VIS_WHITE | VIS_OCTAL);
72 	else if (pi->alt)
73 		ret = strvisx(buf, p, l, VIS_WHITE);
74 	else
75 		ret = strvisx(buf, p, l, VIS_WHITE | VIS_CSTYLE | VIS_OCTAL);
76 	ret += __printf_out(io, pi, buf, ret);
77 	__printf_flush(io);
78 	free(buf);
79 	return(ret);
80 }
81