1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 <wchar.h>
34#include <stdint.h>
35#include <assert.h>
36#include <sys/time.h>
37#include "printf.h"
38
39int
40__printf_arginfo_hexdump(const struct printf_info *pi, size_t n, int *argt)
41{
42
43	assert(n >= 2);
44	argt[0] = PA_POINTER;
45	argt[1] = PA_INT;
46	return (2);
47}
48
49int
50__printf_render_hexdump(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
51{
52	unsigned char *p;
53	int i;
54	unsigned u, l, j, a;
55	char buf[100], *q;
56	int ret;
57
58	if (pi->width > 0 && pi->width < 16)
59		l = pi->width;
60	else
61		l = 16;
62	p = *((unsigned char **)arg[0]);
63	i = *((int *)arg[1]);
64	if (i < 0)
65		i = 0;
66	u = i;
67
68	ret = 0;
69	a = 0;
70	while (u > 0) {
71		q = buf;
72		if (pi->showsign)
73			q += sprintf(q, " %04x", a);
74		for (j = 0; j < l && j < u; j++)
75			q += sprintf(q, " %02x", p[j]);
76		if (pi->alt) {
77			for (; j < l; j++)
78				q += sprintf(q, "   ");
79			q += sprintf(q, "  |");
80			for (j = 0; j < l && j < u; j++) {
81				if (p[j] < ' ' || p[j] > '~')
82					*q++ = '.';
83				else
84					*q++ = p[j];
85			}
86			for (; j < l; j++)
87				*q++ = ' ';
88			*q++ = '|';
89		}
90		if (l < u)
91			j = l;
92		else
93			j = u;
94		p += j;
95		u -= j;
96		a += j;
97		if (u > 0)
98			*q++ = '\n';
99		ret += __printf_puts(io, buf + 1, q - (buf + 1));
100		__printf_flush(io);
101	}
102	return (ret);
103}
104