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
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36 static char sccsid[] = "@(#)odsyntax.c 8.2 (Berkeley) 5/4/95";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
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(int argc, char ***argvp)
69 static char empty[] = "", padding[] = PADDING;
73 /* Add initial (default) address format. -A may change it later. */
75 add("\"%07.7_Ao\n\"");
80 while ((ch = getopt(argc, argv, "A:aBbcDdeFfHhIij:LlN:Oost:vXx")) != -1)
84 case 'd': case 'o': case 'x':
85 fshead->nextfu->fmt[TYPE_OFFSET] = *optarg;
86 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] =
90 fshead->nextfu->fmt = empty;
91 fshead->nextfs->nextfu->fmt = padding;
94 errx(1, "%s: invalid address base", optarg);
116 case 'e': /* undocumented in od */
141 skip = strtoll(optarg, &end, 0);
144 else if (*end == 'k')
146 else if (*end == 'm')
148 if (errno != 0 || skip < 0 || strlen(end) > 1)
149 errx(1, "%s: invalid skip amount", optarg);
152 if ((length = atoi(optarg)) <= 0)
153 errx(1, "%s: invalid length", optarg);
172 if (fshead->nextfs->nextfs == NULL)
179 odoffset(argc, argvp);
187 "usage: od [-aBbcDdeFfHhIiLlOosvXx] [-A base] [-j skip] [-N length] [-t type]\n");
189 " [[+]offset[.][Bb]] [file ...]\n");
194 odoffset(int argc, char ***argvp)
200 * The offset syntax of od(1) was genuinely bizarre. First, if
201 * it started with a plus it had to be an offset. Otherwise, if
202 * there were at least two arguments, a number or lower-case 'x'
203 * followed by a number makes it an offset. By default it was
204 * octal; if it started with 'x' or '0x' it was hex. If it ended
205 * in a '.', it was decimal. If a 'b' or 'B' was appended, it
206 * multiplied the number by 512 or 1024 byte units. There was
207 * no way to assign a block count to a hex offset.
209 * We assume it's a file if the offset is bad.
211 p = argc == 1 ? (*argvp)[0] : (*argvp)[1];
213 if (*p != '+' && (argc < 2 ||
214 (!isdigit(p[0]) && (p[0] != 'x' || !isxdigit(p[1])))))
219 * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
224 if (p[0] == 'x' && isxdigit(p[1])) {
227 } else if (p[0] == '0' && p[1] == 'x') {
232 /* skip over the number */
234 for (num = p; isxdigit(*p); ++p);
236 for (num = p; isdigit(*p); ++p);
238 /* check for no number */
242 /* if terminates with a '.', base is decimal */
249 skip = strtoll(num, &end, base ? base : 8);
251 /* if end isn't the same as p, we got a non-octal digit */
261 } else if (*p == 'b') {
273 * If the offset uses a non-octal base, the base of the offset
274 * is changed as well. This isn't pretty, but it's easy.
277 fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
278 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
279 } else if (base == 10) {
280 fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
281 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
284 /* Terminate file list. */
289 odformat(const char *fmt)
293 while (*fmt != '\0') {
294 switch ((fchar = *fmt++)) {
296 odadd("16/1 \"%3_u \" \"\\n\"");
299 odadd("16/1 \"%3_c \" \"\\n\"");
301 case 'o': case 'u': case 'd': case 'x':
302 fmt = odformatint(fchar, fmt);
305 fmt = odformatfp(fchar, fmt);
308 errx(1, "%c: unrecognised format character", fchar);
314 odformatfp(char fchar __unused, const char *fmt)
320 isize = sizeof(double);
323 isize = sizeof(float);
327 isize = sizeof(double);
331 isize = sizeof(long double);
335 if (isdigit((unsigned char)*fmt)) {
337 isize = (size_t)strtoul(fmt, &end, 10);
338 if (errno != 0 || isize == 0)
339 errx(1, "%s: invalid size", fmt);
340 fmt = (const char *)end;
351 if (isize == sizeof(long double))
354 errx(1, "unsupported floating point size %lu",
358 asprintf(&hdfmt, "%lu/%lu \" %%%d.%de \" \"\\n\"",
359 16UL / (u_long)isize, (u_long)isize, digits + 8, digits);
369 odformatint(char fchar, const char *fmt)
371 unsigned long long n;
379 isize = sizeof(char);
387 isize = sizeof(long);
391 isize = sizeof(short);
395 if (isdigit((unsigned char)*fmt)) {
397 isize = (size_t)strtoul(fmt, &end, 10);
398 if (errno != 0 || isize == 0)
399 errx(1, "%s: invalid size", fmt);
400 if (isize != sizeof(char) && isize != sizeof(short) &&
401 isize != sizeof(int) && isize != sizeof(long))
402 errx(1, "unsupported int size %lu",
404 fmt = (const char *)end;
409 * Calculate the maximum number of digits we need to
410 * fit the number. Overestimate for decimal with log
411 * base 8. We need one extra space for signed numbers
414 n = (1ULL << (8 * isize)) - 1;
418 n >>= (fchar == 'x') ? 4 : 3;
422 asprintf(&hdfmt, "%lu/%lu \"%*s%%%s%d%c\" \"\\n\"",
423 16UL / (u_long)isize, (u_long)isize, (int)(4 * isize - digits),
424 "", (fchar == 'd' || fchar == 'u') ? "" : "0", digits, fchar);
434 odadd(const char *fmt)
439 add("\""PADDING"\"");