2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)odsyntax.c 8.2 (Berkeley) 5/4/95";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD: src/usr.bin/hexdump/odsyntax.c,v 1.8.2.1 2002/07/23 14:27:06 tjr Exp $");
42 #include <sys/types.h>
59 static void odadd(const char *);
60 static void odformat(const char *);
61 static const char *odformatfp(char, const char *);
62 static const char *odformatint(char, const char *);
63 static void odoffset(int, char ***);
64 static void odusage(void);
67 oldsyntax(argc, argvp)
71 static char empty[] = "", padding[] = PADDING;
75 /* Add initial (default) address format. -A may change it later. */
77 add("\"%07.7_Ao\n\"");
82 while ((ch = getopt(argc, argv, "A:aBbcDdeFfHhIij:LlN:Oost:vXx")) != -1)
86 case 'd': case 'o': case 'x':
87 fshead->nextfu->fmt[TYPE_OFFSET] = *optarg;
88 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] =
92 fshead->nextfu->fmt = empty;
93 fshead->nextfs->nextfu->fmt = padding;
96 errx(1, "%s: invalid address base", optarg);
118 case 'e': /* undocumented in od */
143 skip = strtoll(optarg, &end, 0);
146 else if (*end == 'k')
148 else if (*end == 'm')
150 if (errno != 0 || skip < 0 || strlen(end) > 1)
151 errx(1, "%s: invalid skip amount", optarg);
154 if ((length = atoi(optarg)) <= 0)
155 errx(1, "%s: invalid length", optarg);
174 if (fshead->nextfs->nextfs == NULL)
181 odoffset(argc, argvp);
189 "usage: od [-aBbcDdeFfHhIiLlOosvXx] [-A base] [-j skip] [-N length] [-t type]\n");
191 " [[+]offset[.][Bb]] [file ...]\n");
196 odoffset(argc, argvp)
200 unsigned char *p, *num, *end;
204 * The offset syntax of od(1) was genuinely bizarre. First, if
205 * it started with a plus it had to be an offset. Otherwise, if
206 * there were at least two arguments, a number or lower-case 'x'
207 * followed by a number makes it an offset. By default it was
208 * octal; if it started with 'x' or '0x' it was hex. If it ended
209 * in a '.', it was decimal. If a 'b' or 'B' was appended, it
210 * multiplied the number by 512 or 1024 byte units. There was
211 * no way to assign a block count to a hex offset.
213 * We assume it's a file if the offset is bad.
215 p = argc == 1 ? (*argvp)[0] : (*argvp)[1];
217 if (*p != '+' && (argc < 2 ||
218 (!isdigit(p[0]) && (p[0] != 'x' || !isxdigit(p[1])))))
223 * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
228 if (p[0] == 'x' && isxdigit(p[1])) {
231 } else if (p[0] == '0' && p[1] == 'x') {
236 /* skip over the number */
238 for (num = p; isxdigit(*p); ++p);
240 for (num = p; isdigit(*p); ++p);
242 /* check for no number */
246 /* if terminates with a '.', base is decimal */
253 skip = strtoll(num, (char **)&end, base ? base : 8);
255 /* if end isn't the same as p, we got a non-octal digit */
265 } else if (*p == 'b') {
277 * If the offset uses a non-octal base, the base of the offset
278 * is changed as well. This isn't pretty, but it's easy.
281 fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
282 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
283 } else if (base == 10) {
284 fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
285 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
288 /* Terminate file list. */
293 odformat(const char *fmt)
297 while (*fmt != '\0') {
298 switch ((fchar = *fmt++)) {
300 odadd("16/1 \"%3_u \" \"\\n\"");
303 odadd("16/1 \"%3_c \" \"\\n\"");
305 case 'o': case 'u': case 'd': case 'x':
306 fmt = odformatint(fchar, fmt);
309 fmt = odformatfp(fchar, fmt);
312 errx(1, "%c: unrecognised format character", fchar);
318 odformatfp(char fchar __unused, const char *fmt)
324 isize = sizeof(double);
327 isize = sizeof(float);
331 isize = sizeof(double);
335 isize = sizeof(long double);
339 if (isdigit((unsigned char)*fmt)) {
341 isize = (size_t)strtoul(fmt, &end, 10);
342 if (errno != 0 || isize == 0)
343 errx(1, "%s: invalid size", fmt);
344 fmt = (const char *)end;
355 if (isize == sizeof(long double))
358 errx(1, "unsupported floating point size %lu",
362 asprintf(&hdfmt, "%lu/%lu \" %%%d.%de \" \"\\n\"",
363 16UL / (u_long)isize, (u_long)isize, digits + 8, digits);
373 odformatint(char fchar, const char *fmt)
375 unsigned long long n;
383 isize = sizeof(char);
391 isize = sizeof(long);
395 isize = sizeof(short);
399 if (isdigit((unsigned char)*fmt)) {
401 isize = (size_t)strtoul(fmt, &end, 10);
402 if (errno != 0 || isize == 0)
403 errx(1, "%s: invalid size", fmt);
404 if (isize != sizeof(char) && isize != sizeof(short) &&
405 isize != sizeof(int) && isize != sizeof(long))
406 errx(1, "unsupported int size %lu",
408 fmt = (const char *)end;
413 * Calculate the maximum number of digits we need to
414 * fit the number. Overestimate for decimal with log
415 * base 8. We need one extra space for signed numbers
418 n = (1ULL << (8 * isize)) - 1;
422 n >>= (fchar == 'x') ? 4 : 3;
426 asprintf(&hdfmt, "%lu/%lu \"%*s%%%s%d%c\" \"\\n\"",
427 16UL / (u_long)isize, (u_long)isize, (int)(4 * isize - digits),
428 "", (fchar == 'd' || fchar == 'u') ? "" : "0", digits, fchar);
438 odadd(const char *fmt)
443 add("\""PADDING"\"");