xref: /freebsd/lib/libc/stdio/xprintf_vis.c (revision 2abb9b42a53c39a8b781e25a05de1de9e98b8b9a)
1 /*-
2  * Copyright (c) 2005 Poul-Henning Kamp
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #include <namespace.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <stdlib.h>
33 #include <wchar.h>
34 #include <vis.h>
35 #include <assert.h>
36 #include <sys/time.h>
37 #include "printf.h"
38 
39 int
40 __printf_arginfo_vis(const struct printf_info *pi, size_t n, int *argt)
41 {
42 
43 	assert(n >= 1);
44 	argt[0] = PA_POINTER;
45 	return (1);
46 }
47 
48 int
49 __printf_render_vis(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
50 {
51 	char *p, *buf;
52 	unsigned l;
53 	int ret;
54 
55 	ret = 0;
56 	p = *((char **)arg[0]);
57 	if (p == NULL)
58 		return (__printf_out(io, pi, "(null)", 6));
59 	if (pi->prec >= 0)
60 		l = pi->prec;
61 	else
62 		l = strlen(p);
63 	buf = malloc(l * 4 + 1);
64 	if (buf == NULL)
65 		return (-1);
66 	if (pi->showsign)
67 		ret = strvisx(buf, p, l, VIS_WHITE | VIS_HTTPSTYLE);
68 	else if (pi->pad == '0')
69 		ret = strvisx(buf, p, l, VIS_WHITE | VIS_OCTAL);
70 	else if (pi->alt)
71 		ret = strvisx(buf, p, l, VIS_WHITE);
72 	else
73 		ret = strvisx(buf, p, l, VIS_WHITE | VIS_CSTYLE | VIS_OCTAL);
74 	ret += __printf_out(io, pi, buf, ret);
75 	__printf_flush(io);
76 	free(buf);
77 	return(ret);
78 }
79