2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
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32 static char sccsid[] = "@(#)odsyntax.c 8.2 (Berkeley) 5/4/95";
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/types.h>
55 static void odadd(const char *);
56 static void odformat(const char *);
57 static const char *odformatfp(char, const char *);
58 static const char *odformatint(char, const char *);
59 static void odoffset(int, char ***);
60 static void odusage(void);
63 oldsyntax(int argc, char ***argvp)
65 static char empty[] = "", padding[] = PADDING;
69 /* Add initial (default) address format. -A may change it later. */
71 add("\"%07.7_Ao\n\"");
76 while ((ch = getopt(argc, argv, "A:aBbcDdeFfHhIij:LlN:Oost:vXx")) != -1)
80 case 'd': case 'o': case 'x':
81 fshead->nextfu->fmt[TYPE_OFFSET] = *optarg;
82 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] =
86 fshead->nextfu->fmt = empty;
87 fshead->nextfs->nextfu->fmt = padding;
90 errx(1, "%s: invalid address base", optarg);
112 case 'e': /* undocumented in od */
137 skip = strtoll(optarg, &end, 0);
140 else if (*end == 'k')
142 else if (*end == 'm')
144 if (errno != 0 || skip < 0 || strlen(end) > 1)
145 errx(1, "%s: invalid skip amount", optarg);
148 if ((length = atoi(optarg)) <= 0)
149 errx(1, "%s: invalid length", optarg);
168 if (fshead->nextfs->nextfs == NULL)
175 odoffset(argc, argvp);
183 "usage: od [-aBbcDdeFfHhIiLlOosvXx] [-A base] [-j skip] [-N length] [-t type]\n");
185 " [[+]offset[.][Bb]] [file ...]\n");
190 odoffset(int argc, char ***argvp)
196 * The offset syntax of od(1) was genuinely bizarre. First, if
197 * it started with a plus it had to be an offset. Otherwise, if
198 * there were at least two arguments, a number or lower-case 'x'
199 * followed by a number makes it an offset. By default it was
200 * octal; if it started with 'x' or '0x' it was hex. If it ended
201 * in a '.', it was decimal. If a 'b' or 'B' was appended, it
202 * multiplied the number by 512 or 1024 byte units. There was
203 * no way to assign a block count to a hex offset.
205 * We assume it's a file if the offset is bad.
207 p = argc == 1 ? (*argvp)[0] : (*argvp)[1];
209 if (*p != '+' && (argc < 2 ||
210 (!isdigit(p[0]) && (p[0] != 'x' || !isxdigit(p[1])))))
215 * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
220 if (p[0] == 'x' && isxdigit(p[1])) {
223 } else if (p[0] == '0' && p[1] == 'x') {
228 /* skip over the number */
230 for (num = p; isxdigit(*p); ++p);
232 for (num = p; isdigit(*p); ++p);
234 /* check for no number */
238 /* if terminates with a '.', base is decimal */
245 skip = strtoll(num, &end, base ? base : 8);
247 /* if end isn't the same as p, we got a non-octal digit */
257 } else if (*p == 'b') {
269 * If the offset uses a non-octal base, the base of the offset
270 * is changed as well. This isn't pretty, but it's easy.
273 fshead->nextfu->fmt[TYPE_OFFSET] = 'x';
274 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'x';
275 } else if (base == 10) {
276 fshead->nextfu->fmt[TYPE_OFFSET] = 'd';
277 fshead->nextfs->nextfu->fmt[TYPE_OFFSET] = 'd';
280 /* Terminate file list. */
285 odformat(const char *fmt)
289 while (*fmt != '\0') {
290 switch ((fchar = *fmt++)) {
292 odadd("16/1 \"%3_u \" \"\\n\"");
295 odadd("16/1 \"%3_c \" \"\\n\"");
297 case 'o': case 'u': case 'd': case 'x':
298 fmt = odformatint(fchar, fmt);
301 fmt = odformatfp(fchar, fmt);
304 errx(1, "%c: unrecognised format character", fchar);
310 odformatfp(char fchar __unused, const char *fmt)
316 isize = sizeof(double);
319 isize = sizeof(float);
323 isize = sizeof(double);
327 isize = sizeof(long double);
331 if (isdigit((unsigned char)*fmt)) {
333 isize = (size_t)strtoul(fmt, &end, 10);
334 if (errno != 0 || isize == 0)
335 errx(1, "%s: invalid size", fmt);
336 fmt = (const char *)end;
347 if (isize == sizeof(long double))
350 errx(1, "unsupported floating point size %lu",
354 asprintf(&hdfmt, "%lu/%lu \" %%%d.%de \" \"\\n\"",
355 16UL / (u_long)isize, (u_long)isize, digits + 8, digits);
365 odformatint(char fchar, const char *fmt)
367 unsigned long long n;
375 isize = sizeof(char);
383 isize = sizeof(long);
387 isize = sizeof(short);
391 if (isdigit((unsigned char)*fmt)) {
393 isize = (size_t)strtoul(fmt, &end, 10);
394 if (errno != 0 || isize == 0)
395 errx(1, "%s: invalid size", fmt);
396 if (isize != sizeof(char) && isize != sizeof(short) &&
397 isize != sizeof(int) && isize != sizeof(long))
398 errx(1, "unsupported int size %lu",
400 fmt = (const char *)end;
405 * Calculate the maximum number of digits we need to
406 * fit the number. Overestimate for decimal with log
407 * base 8. We need one extra space for signed numbers
410 n = (1ULL << (8 * isize)) - 1;
414 n >>= (fchar == 'x') ? 4 : 3;
418 asprintf(&hdfmt, "%lu/%lu \"%*s%%%s%d%c\" \"\\n\"",
419 16UL / (u_long)isize, (u_long)isize, (int)(4 * isize - digits),
420 "", (fchar == 'd' || fchar == 'u') ? "" : "0", digits, fchar);
430 odadd(const char *fmt)
435 add("\""PADDING"\"");