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 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 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