xref: /freebsd/usr.bin/hexdump/hexdump.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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
35 static const 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
41 #if 0
42 static char sccsid[] = "@(#)hexdump.c	8.1 (Berkeley) 6/6/93";
43 #endif
44 #endif /* not lint */
45 #include <sys/cdefs.h>
46 __FBSDID("$FreeBSD$");
47 
48 #include <sys/types.h>
49 #include <locale.h>
50 #include <stdlib.h>
51 #include <stdio.h>
52 #include <string.h>
53 #include "hexdump.h"
54 
55 FS *fshead;				/* head of format strings */
56 int blocksize;				/* data block size */
57 int exitval;				/* final exit value */
58 int length = -1;			/* max bytes to read */
59 
60 int
61 main(int argc, char *argv[])
62 {
63 	FS *tfs;
64 	char *p;
65 
66 	(void)setlocale(LC_ALL, "");
67 
68 	if (!(p = rindex(argv[0], 'o')) || strcmp(p, "od"))
69 		newsyntax(argc, &argv);
70 	else
71 		oldsyntax(argc, &argv);
72 
73 	/* figure out the data block size */
74 	for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
75 		tfs->bcnt = size(tfs);
76 		if (blocksize < tfs->bcnt)
77 			blocksize = tfs->bcnt;
78 	}
79 	/* rewrite the rules, do syntax checking */
80 	for (tfs = fshead; tfs; tfs = tfs->nextfs)
81 		rewrite(tfs);
82 
83 	(void)next(argv);
84 	display();
85 	exit(exitval);
86 }
87