xref: /openbsd-src/usr.bin/hexdump/hexsyntax.c (revision b2ea75c1b17e1a9a339660e7ed45cd24946b230e)
1 /*	$OpenBSD: hexsyntax.c,v 1.4 2001/07/12 05:17:10 deraadt Exp $	*/
2 
3 /*-
4  * Copyright (c) 1990 The Regents of the University of California.
5  * 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. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #ifndef lint
37 /*static char sccsid[] = "from: @(#)hexsyntax.c	5.2 (Berkeley) 5/8/90";*/
38 static char rcsid[] = "$OpenBSD: hexsyntax.c,v 1.4 2001/07/12 05:17:10 deraadt Exp $";
39 #endif /* not lint */
40 
41 #include <sys/types.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <limits.h>
45 #include <unistd.h>
46 #include "hexdump.h"
47 
48 off_t skip;				/* bytes to skip */
49 
50 void
51 newsyntax(argc, argvp)
52 	int argc;
53 	char ***argvp;
54 {
55 	extern enum _vflag vflag;
56 	extern FS *fshead;
57 	extern char *optarg;
58 	extern int length, optind;
59 	int ch;
60 	char *p, **argv;
61 
62 	argv = *argvp;
63 	while ((ch = getopt(argc, argv, "bcde:f:n:os:vx")) != -1)
64 		switch (ch) {
65 		case 'b':
66 			add("\"%07.7_Ax\n\"");
67 			add("\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"");
68 			break;
69 		case 'c':
70 			add("\"%07.7_Ax\n\"");
71 			add("\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"");
72 			break;
73 		case 'd':
74 			add("\"%07.7_Ax\n\"");
75 			add("\"%07.7_ax \" 8/2 \"  %05u \" \"\\n\"");
76 			break;
77 		case 'e':
78 			add(optarg);
79 			break;
80 		case 'f':
81 			addfile(optarg);
82 			break;
83 		case 'n':
84 			if ((length = atoi(optarg)) < 0) {
85 				(void)fprintf(stderr,
86 				    "hexdump: bad length value.\n");
87 				exit(1);
88 			}
89 			break;
90 		case 'o':
91 			add("\"%07.7_Ax\n\"");
92 			add("\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"");
93 			break;
94 		case 's':
95 			if ((skip = strtol(optarg, &p, 0)) < 0) {
96 				(void)fprintf(stderr,
97 				    "hexdump: bad skip value.\n");
98 				exit(1);
99 			}
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 			exit(1);
122 		}
123 
124 	if (!fshead) {
125 		add("\"%07.7_Ax\n\"");
126 		add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
127 	}
128 
129 	*argvp += optind;
130 }
131 
132 void
133 usage()
134 {
135 	(void)fprintf(stderr,
136 "hexdump: [-bcdovx] [-e fmt] [-f fmt_file] [-n length] [-s skip] [file ...]\n");
137 	exit(1);
138 }
139