hexdump.c revision 1591 
1/*
2 * Copyright (c) 1989, 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 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char copyright[] =
36"@(#) Copyright (c) 1989, 1993\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)hexdump.c	8.1 (Berkeley) 6/6/93";
42#endif /* not lint */
43
44#include <sys/types.h>
45
46#include <errno.h>
47#include <stdlib.h>
48#include <stdio.h>
49#include <string.h>
50#include "hexdump.h"
51
52FS *fshead;				/* head of format strings */
53int blocksize;				/* data block size */
54int exitval;				/* final exit value */
55int length = -1;			/* max bytes to read */
56
57int
58main(argc, argv)
59	int argc;
60	char *argv[];
61{
62	register FS *tfs;
63	char *p;
64
65	if (!(p = rindex(argv[0], 'o')) || strcmp(p, "od"))
66		newsyntax(argc, &argv);
67	else
68		oldsyntax(argc, &argv);
69
70	/* figure out the data block size */
71	for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
72		tfs->bcnt = size(tfs);
73		if (blocksize < tfs->bcnt)
74			blocksize = tfs->bcnt;
75	}
76	/* rewrite the rules, do syntax checking */
77	for (tfs = fshead; tfs; tfs = tfs->nextfs)
78		rewrite(tfs);
79
80	(void)next(argv);
81	display();
82	exit(exitval);
83}
84
85#if __STDC__
86#include <stdarg.h>
87#else
88#include <varargs.h>
89#endif
90
91void
92#if __STDC__
93err(const char *fmt, ...)
94#else
95err(fmt, va_alist)
96	char *fmt;
97        va_dcl
98#endif
99{
100	va_list ap;
101#if __STDC__
102	va_start(ap, fmt);
103#else
104	va_start(ap);
105#endif
106	(void)fprintf(stderr, "hexdump: ");
107	(void)vfprintf(stderr, fmt, ap);
108	va_end(ap);
109	(void)fprintf(stderr, "\n");
110	exit(1);
111	/* NOTREACHED */
112}
113