xref: /freebsd/usr.bin/hexdump/hexsyntax.c (revision 2f1217877e155a8a7de97e74eb7e82096a5ef316)
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
32 static 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 
48 off_t skip;				/* bytes to skip */
49 
50 void
51 newsyntax(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 
131 void
132 usage(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 }
141