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: src/lib/libc/stdio/xprintf_hexdump.c,v 1.1 2005/12/16 18:56:38 phk Exp $
27 */
28
29#include <namespace.h>
30#include <stdio.h>
31#include <wchar.h>
32#include <stdint.h>
33#include <assert.h>
34#include <sys/time.h>
35#include "printf.h"
36#include "xprintf_private.h"
37
38__private_extern__ int
39__printf_arginfo_hexdump(const struct printf_info *pi, size_t n, int *argt)
40{
41
42	assert(n >= 2);
43	argt[0] = PA_POINTER;
44	argt[1] = PA_INT;
45	return (2);
46}
47
48__private_extern__ int
49__printf_render_hexdump(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
50{
51	unsigned char *p;
52	unsigned u, l, j, a;
53	char buf[100], *q;
54	int ret;
55
56	if (pi->width > 0 && pi->width < 16)
57		l = pi->width;
58	else
59		l = 16;
60	p = *((unsigned char **)arg[0]);
61	u = *((unsigned *)arg[1]);
62
63	ret = 0;
64	a = 0;
65	while (u > 0) {
66		q = buf;
67		if (pi->showsign)
68			q += sprintf(q, " %04x", a);
69		for (j = 0; j < l && j < u; j++)
70			q += sprintf(q, " %02x", p[j]);
71		if (pi->alt) {
72			for (; j < l; j++)
73				q += sprintf(q, "   ");
74			q += sprintf(q, "  |");
75			for (j = 0; j < l && j < u; j++) {
76				if (p[j] < ' ' || p[j] > '~')
77					*q++ = '.';
78				else
79					*q++ = p[j];
80			}
81			for (; j < l; j++)
82				*q++ = ' ';
83			*q++ = '|';
84		}
85		if (l < u)
86			j = l;
87		else
88			j = u;
89		p += j;
90		u -= j;
91		a += j;
92		if (u > 0)
93			*q++ = '\n';
94		ret += __printf_puts(io, buf + 1, q - (buf + 1));
95		__printf_flush(io);
96	}
97	return (ret);
98}
99