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
39 int
__printf_arginfo_hexdump(const struct printf_info * pi,size_t n,int * argt)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
49 int
__printf_render_hexdump(struct __printf_io * io,const struct printf_info * pi,const void * const * arg)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