1 /*- 2 * Copyright (c) 1986, 1988, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)subr_prf.c 8.3 (Berkeley) 1/21/94 35 * $FreeBSD: head/lib/libutil/hexdump.c 180161 2008-07-01 22:30:57Z jhb $ 36 */ 37 38 #include <sys/types.h> 39 #include <libutil.h> 40 #include <stdio.h> 41 42 void 43 hexdump(const void *ptr, int length, const char *hdr, int flags) 44 { 45 int i, j, k; 46 int cols; 47 const unsigned char *cp; 48 char delim; 49 50 if ((flags & HD_DELIM_MASK) != 0) 51 delim = (flags & HD_DELIM_MASK) >> 8; 52 else 53 delim = ' '; 54 55 if ((flags & HD_COLUMN_MASK) != 0) 56 cols = flags & HD_COLUMN_MASK; 57 else 58 cols = 16; 59 60 cp = ptr; 61 for (i = 0; i < length; i+= cols) { 62 if (hdr != NULL) 63 printf("%s", hdr); 64 65 if ((flags & HD_OMIT_COUNT) == 0) 66 printf("%04x ", i); 67 68 if ((flags & HD_OMIT_HEX) == 0) { 69 for (j = 0; j < cols; j++) { 70 k = i + j; 71 if (k < length) 72 printf("%c%02x", delim, cp[k]); 73 else 74 printf(" "); 75 } 76 } 77 78 if ((flags & HD_OMIT_CHARS) == 0) { 79 printf(" |"); 80 for (j = 0; j < cols; j++) { 81 k = i + j; 82 if (k >= length) 83 printf(" "); 84 else if (cp[k] >= ' ' && cp[k] <= '~') 85 printf("%c", cp[k]); 86 else 87 printf("."); 88 } 89 printf("|"); 90 } 91 printf("\n"); 92 } 93 } 94 95