xref: /netbsd/usr.bin/hexdump/hexdump.c (revision 6550d01e)
1 /*	$NetBSD: hexdump.c,v 1.17 2010/11/28 10:45:32 mrg Exp $	*/
2 
3 /*
4  * Copyright (c) 1989, 1993
5  *	The Regents of the University of California.  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  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #if HAVE_NBTOOL_CONFIG_H
33 #include "nbtool_config.h"
34 #endif
35 
36 #include <sys/cdefs.h>
37 #if !defined(lint)
38 __COPYRIGHT("@(#) Copyright (c) 1989, 1993\
39  The Regents of the University of California.  All rights reserved.");
40 #if 0
41 static char sccsid[] = "@(#)hexdump.c	8.1 (Berkeley) 6/6/93";
42 #else
43 __RCSID("$NetBSD: hexdump.c,v 1.17 2010/11/28 10:45:32 mrg Exp $");
44 #endif
45 #endif /* not lint */
46 
47 #include <sys/types.h>
48 
49 #include <errno.h>
50 #include <locale.h>
51 #include <stdlib.h>
52 #include <stdio.h>
53 #include <string.h>
54 
55 #include "hexdump.h"
56 
57 FS *fshead;				/* head of format strings */
58 int blocksize;				/* data block size */
59 int exitval;				/* final exit value */
60 int length = -1;			/* max bytes to read */
61 static int isod = 0;
62 
63 int
64 main(int argc, char *argv[])
65 {
66 	FS *tfs;
67 	char *p;
68 
69 	setlocale(LC_ALL, "");
70 
71 	isod = 0;
72 	p = strrchr(argv[0], 'o');
73 	if (p != NULL && strcmp(p, "od") == 0)
74 		isod = 1;
75 
76 	if (isod)
77 		odsyntax(argc, &argv);
78 	else
79 		hexsyntax(argc, &argv);
80 
81 	/* figure out the data block size */
82 	for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
83 		tfs->bcnt = size(tfs);
84 		if (blocksize < tfs->bcnt)
85 			blocksize = tfs->bcnt;
86 	}
87 	/* rewrite the rules, do syntax checking */
88 	for (tfs = fshead; tfs; tfs = tfs->nextfs)
89 		rewrite(tfs);
90 
91 	(void)next(argv);
92 	display();
93 	exit(exitval);
94 }
95 
96 void
97 usage(void)
98 {
99 	const char *pname = getprogname();
100 
101 	(void)fprintf(stderr, "Usage: %s ", pname);
102 	if (isod)
103 		(void)fprintf(stderr, "[-aBbcDdeFfHhIiLlOovXx] [-A base] "
104 		    "[-j skip] [-N length] [-t type_string] [[+]offset[.][Bb]] "
105 		    "[file ...]\n");
106 	else
107 		(void)fprintf(stderr, "[-bcCdovx] [-e fmt] [-f fmt_file] "
108 		    "[-n length] [-s skip] [file ...]\n");
109 	exit(1);
110 }
111