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/usr.bin/hexdump/hexsyntax.c

https://bitbucket.org/freebsd/freebsd-head/
C | 140 lines | 101 code | 10 blank | 29 comment | 9 complexity | f983d14072020da5c1820c9d3cd9b6b0 MD5 | raw file
  1/*-
  2 * Copyright (c) 1990, 1993
  3 *	The Regents of the University of California.  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 * 4. Neither the name of the University nor the names of its contributors
 14 *    may be used to endorse or promote products derived from this software
 15 *    without specific prior written permission.
 16 *
 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 27 * SUCH DAMAGE.
 28 */
 29
 30#ifndef lint
 31#if 0
 32static char sccsid[] = "@(#)hexsyntax.c	8.2 (Berkeley) 5/4/95";
 33#endif
 34#endif /* not lint */
 35#include <sys/cdefs.h>
 36__FBSDID("$FreeBSD$");
 37
 38#include <sys/types.h>
 39
 40#include <err.h>
 41#include <stdio.h>
 42#include <stdlib.h>
 43#include <string.h>
 44#include <unistd.h>
 45
 46#include "hexdump.h"
 47
 48off_t skip;				/* bytes to skip */
 49
 50void
 51newsyntax(int argc, char ***argvp)
 52{
 53	int ch;
 54	char *p, **argv;
 55
 56	argv = *argvp;
 57	if ((p = strrchr(argv[0], 'h')) != NULL &&
 58	    strcmp(p, "hd") == 0) {
 59		/* "Canonical" format, implies -C. */
 60		add("\"%08.8_Ax\n\"");
 61		add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
 62		add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
 63	}
 64	while ((ch = getopt(argc, argv, "bcCde:f:n:os:vx")) != -1)
 65		switch (ch) {
 66		case 'b':
 67			add("\"%07.7_Ax\n\"");
 68			add("\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"");
 69			break;
 70		case 'c':
 71			add("\"%07.7_Ax\n\"");
 72			add("\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"");
 73			break;
 74		case 'C':
 75			add("\"%08.8_Ax\n\"");
 76			add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
 77			add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
 78			break;
 79		case 'd':
 80			add("\"%07.7_Ax\n\"");
 81			add("\"%07.7_ax \" 8/2 \"  %05u \" \"\\n\"");
 82			break;
 83		case 'e':
 84			add(optarg);
 85			break;
 86		case 'f':
 87			addfile(optarg);
 88			break;
 89		case 'n':
 90			if ((length = atoi(optarg)) < 0)
 91				errx(1, "%s: bad length value", optarg);
 92			break;
 93		case 'o':
 94			add("\"%07.7_Ax\n\"");
 95			add("\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"");
 96			break;
 97		case 's':
 98			if ((skip = strtoll(optarg, &p, 0)) < 0)
 99				errx(1, "%s: bad skip value", optarg);
100			switch(*p) {
101			case 'b':
102				skip *= 512;
103				break;
104			case 'k':
105				skip *= 1024;
106				break;
107			case 'm':
108				skip *= 1048576;
109				break;
110			}
111			break;
112		case 'v':
113			vflag = ALL;
114			break;
115		case 'x':
116			add("\"%07.7_Ax\n\"");
117			add("\"%07.7_ax \" 8/2 \"   %04x \" \"\\n\"");
118			break;
119		case '?':
120			usage();
121		}
122
123	if (!fshead) {
124		add("\"%07.7_Ax\n\"");
125		add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
126	}
127
128	*argvp += optind;
129}
130
131void
132usage(void)
133{
134	(void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
135"usage: hexdump [-bcCdovx] [-e fmt] [-f fmt_file] [-n length]",
136"               [-s skip] [file ...]",
137"       hd      [-bcdovx]  [-e fmt] [-f fmt_file] [-n length]",
138"               [-s skip] [file ...]");
139	exit(1);
140}