xref: /freebsd/usr.bin/hexdump/hexsyntax.c (revision df3f5d9dd51fa82a604ec559a75d3791a7b80ed5)
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  * 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 char sccsid[] = "@(#)hexsyntax.c	8.2 (Berkeley) 5/4/95";
36 #endif /* not lint */
37 
38 #include <sys/types.h>
39 
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43 #include <unistd.h>
44 
45 #include "hexdump.h"
46 
47 off_t skip;				/* bytes to skip */
48 
49 void
50 newsyntax(argc, argvp)
51 	int argc;
52 	char ***argvp;
53 {
54 	extern enum _vflag vflag;
55 	extern FS *fshead;
56 	extern int length;
57 	int ch;
58 	char *p, **argv;
59 
60 	argv = *argvp;
61 	if ((p = rindex(argv[0], 'h')) != NULL &&
62 	    strcmp(p, "hd") == 0) {
63 		/* "Canonical" format, implies -C. */
64 		add("\"%08.8_Ax\n\"");
65 		add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
66 		add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
67 	}
68 	while ((ch = getopt(argc, argv, "bcCde:f:n:os:vx")) != EOF)
69 		switch (ch) {
70 		case 'b':
71 			add("\"%07.7_Ax\n\"");
72 			add("\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"");
73 			break;
74 		case 'c':
75 			add("\"%07.7_Ax\n\"");
76 			add("\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"");
77 			break;
78 		case 'C':
79 			add("\"%08.8_Ax\n\"");
80 			add("\"%08.8_ax  \" 8/1 \"%02x \" \"  \" 8/1 \"%02x \" ");
81 			add("\"  |\" 16/1 \"%_p\" \"|\\n\"");
82 			break;
83 		case 'd':
84 			add("\"%07.7_Ax\n\"");
85 			add("\"%07.7_ax \" 8/2 \"  %05u \" \"\\n\"");
86 			break;
87 		case 'e':
88 			add(optarg);
89 			break;
90 		case 'f':
91 			addfile(optarg);
92 			break;
93 		case 'n':
94 			if ((length = atoi(optarg)) < 0)
95 				err("%s: bad length value", optarg);
96 			break;
97 		case 'o':
98 			add("\"%07.7_Ax\n\"");
99 			add("\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"");
100 			break;
101 		case 's':
102 			if ((skip = strtol(optarg, &p, 0)) < 0)
103 				err("%s: bad skip value", optarg);
104 			switch(*p) {
105 			case 'b':
106 				skip *= 512;
107 				break;
108 			case 'k':
109 				skip *= 1024;
110 				break;
111 			case 'm':
112 				skip *= 1048576;
113 				break;
114 			}
115 			break;
116 		case 'v':
117 			vflag = ALL;
118 			break;
119 		case 'x':
120 			add("\"%07.7_Ax\n\"");
121 			add("\"%07.7_ax \" 8/2 \"   %04x \" \"\\n\"");
122 			break;
123 		case '?':
124 			usage();
125 		}
126 
127 	if (!fshead) {
128 		add("\"%07.7_Ax\n\"");
129 		add("\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
130 	}
131 
132 	*argvp += optind;
133 }
134 
135 void
136 usage()
137 {
138 	(void)fprintf(stderr,
139 "hexdump: [-bcCdovx] [-e fmt] [-f fmt_file] [-n length] [-s skip] [file ...]\n");
140 	exit(1);
141 }
142