blob: 475fb3f6b85a2fa7d36148e2e726f1f0053f73dd
1 | /* od -- dump files in octal and other formats |
2 | Copyright (C) 92, 1995-2004 Free Software Foundation, Inc. |
3 | |
4 | This program is free software; you can redistribute it and/or modify |
5 | it under the terms of the GNU General Public License as published by |
6 | the Free Software Foundation; either version 2, or (at your option) |
7 | any later version. |
8 | |
9 | This program is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | GNU General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU General Public License |
15 | along with this program; if not, write to the Free Software Foundation, |
16 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
17 | */ |
18 | /* Written by Jim Meyering. */ |
19 | /* Busyboxed by Denys Vlasenko, based on od.c from coreutils-5.2.1 */ |
20 | |
21 | |
22 | /* #include "libbb.h" - done in od.c */ |
23 | #include "common_bufsiz.h" |
24 | #define assert(a) ((void)0) |
25 | |
26 | |
27 | //usage:#if ENABLE_DESKTOP |
28 | //usage:#define od_trivial_usage |
29 | //usage: "[-abcdfhilovxs] [-t TYPE] [-A RADIX] [-N SIZE] [-j SKIP] [-S MINSTR] [-w WIDTH] [FILE]..." |
30 | // We don't support: |
31 | // ... [FILE] [[+]OFFSET[.][b]] |
32 | // Support is buggy for: |
33 | // od --traditional [OPTION]... [FILE] [[+]OFFSET[.][b] [+][LABEL][.][b]] |
34 | |
35 | //usage:#define od_full_usage "\n\n" |
36 | //usage: "Print FILEs (or stdin) unambiguously, as octal bytes by default" |
37 | //usage:#endif |
38 | |
39 | enum { |
40 | OPT_A = 1 << 0, |
41 | OPT_N = 1 << 1, |
42 | OPT_a = 1 << 2, |
43 | OPT_b = 1 << 3, |
44 | OPT_c = 1 << 4, |
45 | OPT_d = 1 << 5, |
46 | OPT_f = 1 << 6, |
47 | OPT_h = 1 << 7, |
48 | OPT_i = 1 << 8, |
49 | OPT_j = 1 << 9, |
50 | OPT_l = 1 << 10, |
51 | OPT_o = 1 << 11, |
52 | OPT_t = 1 << 12, |
53 | /* When zero and two or more consecutive blocks are equal, format |
54 | only the first block and output an asterisk alone on the following |
55 | line to indicate that identical blocks have been elided: */ |
56 | OPT_v = 1 << 13, |
57 | OPT_x = 1 << 14, |
58 | OPT_s = 1 << 15, |
59 | OPT_S = 1 << 16, |
60 | OPT_w = 1 << 17, |
61 | OPT_traditional = (1 << 18) * ENABLE_LONG_OPTS, |
62 | }; |
63 | |
64 | #define OD_GETOPT32() getopt32(argv, \ |
65 | "A:N:abcdfhij:lot:*vxsS:w:+:", \ |
66 | /* -w with optional param */ \ |
67 | /* -S was -s and also had optional parameter */ \ |
68 | /* but in coreutils 6.3 it was renamed and now has */ \ |
69 | /* _mandatory_ parameter */ \ |
70 | &str_A, &str_N, &str_j, &lst_t, &str_S, &G.bytes_per_block) |
71 | |
72 | |
73 | /* Check for 0x7f is a coreutils 6.3 addition */ |
74 | #define ISPRINT(c) (((c) >= ' ') && (c) < 0x7f) |
75 | |
76 | typedef long double longdouble_t; |
77 | typedef unsigned long long ulonglong_t; |
78 | typedef long long llong; |
79 | |
80 | #if ENABLE_LFS |
81 | # define xstrtooff_sfx xstrtoull_sfx |
82 | #else |
83 | # define xstrtooff_sfx xstrtoul_sfx |
84 | #endif |
85 | |
86 | /* The default number of input bytes per output line. */ |
87 | #define DEFAULT_BYTES_PER_BLOCK 16 |
88 | |
89 | /* The number of decimal digits of precision in a float. */ |
90 | #ifndef FLT_DIG |
91 | # define FLT_DIG 7 |
92 | #endif |
93 | |
94 | /* The number of decimal digits of precision in a double. */ |
95 | #ifndef DBL_DIG |
96 | # define DBL_DIG 15 |
97 | #endif |
98 | |
99 | /* The number of decimal digits of precision in a long double. */ |
100 | #ifndef LDBL_DIG |
101 | # define LDBL_DIG DBL_DIG |
102 | #endif |
103 | |
104 | enum size_spec { |
105 | NO_SIZE, |
106 | CHAR, |
107 | SHORT, |
108 | INT, |
109 | LONG, |
110 | LONG_LONG, |
111 | FLOAT_SINGLE, |
112 | FLOAT_DOUBLE, |
113 | FLOAT_LONG_DOUBLE, |
114 | N_SIZE_SPECS |
115 | }; |
116 | |
117 | enum output_format { |
118 | SIGNED_DECIMAL, |
119 | UNSIGNED_DECIMAL, |
120 | OCTAL, |
121 | HEXADECIMAL, |
122 | FLOATING_POINT, |
123 | NAMED_CHARACTER, |
124 | CHARACTER |
125 | }; |
126 | |
127 | /* Each output format specification (from '-t spec' or from |
128 | old-style options) is represented by one of these structures. */ |
129 | struct tspec { |
130 | enum output_format fmt; |
131 | enum size_spec size; |
132 | void (*print_function) (size_t, const char *, const char *); |
133 | char *fmt_string; |
134 | int hexl_mode_trailer; |
135 | int field_width; |
136 | }; |
137 | |
138 | /* Convert the number of 8-bit bytes of a binary representation to |
139 | the number of characters (digits + sign if the type is signed) |
140 | required to represent the same quantity in the specified base/type. |
141 | For example, a 32-bit (4-byte) quantity may require a field width |
142 | as wide as the following for these types: |
143 | 11 unsigned octal |
144 | 11 signed decimal |
145 | 10 unsigned decimal |
146 | 8 unsigned hexadecimal */ |
147 | |
148 | static const uint8_t bytes_to_oct_digits[] ALIGN1 = |
149 | {0, 3, 6, 8, 11, 14, 16, 19, 22, 25, 27, 30, 32, 35, 38, 41, 43}; |
150 | |
151 | static const uint8_t bytes_to_signed_dec_digits[] ALIGN1 = |
152 | {1, 4, 6, 8, 11, 13, 16, 18, 20, 23, 25, 28, 30, 33, 35, 37, 40}; |
153 | |
154 | static const uint8_t bytes_to_unsigned_dec_digits[] ALIGN1 = |
155 | {0, 3, 5, 8, 10, 13, 15, 17, 20, 22, 25, 27, 29, 32, 34, 37, 39}; |
156 | |
157 | static const uint8_t bytes_to_hex_digits[] ALIGN1 = |
158 | {0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32}; |
159 | |
160 | /* Convert enum size_spec to the size of the named type. */ |
161 | static const signed char width_bytes[] ALIGN1 = { |
162 | -1, |
163 | sizeof(char), |
164 | sizeof(short), |
165 | sizeof(int), |
166 | sizeof(long), |
167 | sizeof(ulonglong_t), |
168 | sizeof(float), |
169 | sizeof(double), |
170 | sizeof(longdouble_t) |
171 | }; |
172 | /* Ensure that for each member of 'enum size_spec' there is an |
173 | initializer in the width_bytes array. */ |
174 | struct ERR_width_bytes_has_bad_size { |
175 | char ERR_width_bytes_has_bad_size[ARRAY_SIZE(width_bytes) == N_SIZE_SPECS ? 1 : -1]; |
176 | }; |
177 | |
178 | struct globals { |
179 | smallint exit_code; |
180 | |
181 | unsigned string_min; |
182 | |
183 | /* An array of specs describing how to format each input block. */ |
184 | unsigned n_specs; |
185 | struct tspec *spec; |
186 | |
187 | /* Function that accepts an address and an optional following char, |
188 | and prints the address and char to stdout. */ |
189 | void (*format_address)(off_t, char); |
190 | |
191 | /* The difference between the old-style pseudo starting address and |
192 | the number of bytes to skip. */ |
193 | #if ENABLE_LONG_OPTS |
194 | off_t pseudo_offset; |
195 | # define G_pseudo_offset G.pseudo_offset |
196 | #endif |
197 | /* When zero, MAX_BYTES_TO_FORMAT and END_OFFSET are ignored, and all |
198 | input is formatted. */ |
199 | |
200 | /* The number of input bytes formatted per output line. It must be |
201 | a multiple of the least common multiple of the sizes associated with |
202 | the specified output types. It should be as large as possible, but |
203 | no larger than 16 -- unless specified with the -w option. */ |
204 | unsigned bytes_per_block; /* have to use unsigned, not size_t */ |
205 | |
206 | /* A NULL-terminated list of the file-arguments from the command line. */ |
207 | const char *const *file_list; |
208 | |
209 | /* The input stream associated with the current file. */ |
210 | FILE *in_stream; |
211 | |
212 | bool not_first; |
213 | bool prev_pair_equal; |
214 | } FIX_ALIASING; |
215 | #if !ENABLE_LONG_OPTS |
216 | enum { G_pseudo_offset = 0 }; |
217 | #endif |
218 | #define G (*(struct globals*)bb_common_bufsiz1) |
219 | #define INIT_G() do { \ |
220 | setup_common_bufsiz(); \ |
221 | BUILD_BUG_ON(sizeof(G) > COMMON_BUFSIZE); \ |
222 | G.bytes_per_block = 32; \ |
223 | } while (0) |
224 | |
225 | |
226 | #define MAX_INTEGRAL_TYPE_SIZE sizeof(ulonglong_t) |
227 | static const unsigned char integral_type_size[MAX_INTEGRAL_TYPE_SIZE + 1] ALIGN1 = { |
228 | [sizeof(char)] = CHAR, |
229 | #if USHRT_MAX != UCHAR_MAX |
230 | [sizeof(short)] = SHORT, |
231 | #endif |
232 | #if UINT_MAX != USHRT_MAX |
233 | [sizeof(int)] = INT, |
234 | #endif |
235 | #if ULONG_MAX != UINT_MAX |
236 | [sizeof(long)] = LONG, |
237 | #endif |
238 | #if ULLONG_MAX != ULONG_MAX |
239 | [sizeof(ulonglong_t)] = LONG_LONG, |
240 | #endif |
241 | }; |
242 | |
243 | #define MAX_FP_TYPE_SIZE sizeof(longdouble_t) |
244 | static const unsigned char fp_type_size[MAX_FP_TYPE_SIZE + 1] ALIGN1 = { |
245 | /* gcc seems to allow repeated indexes. Last one wins */ |
246 | [sizeof(longdouble_t)] = FLOAT_LONG_DOUBLE, |
247 | [sizeof(double)] = FLOAT_DOUBLE, |
248 | [sizeof(float)] = FLOAT_SINGLE |
249 | }; |
250 | |
251 | |
252 | static unsigned |
253 | gcd(unsigned u, unsigned v) |
254 | { |
255 | unsigned t; |
256 | while (v != 0) { |
257 | t = u % v; |
258 | u = v; |
259 | v = t; |
260 | } |
261 | return u; |
262 | } |
263 | |
264 | /* Compute the least common multiple of U and V. */ |
265 | static unsigned |
266 | lcm(unsigned u, unsigned v) { |
267 | unsigned t = gcd(u, v); |
268 | if (t == 0) |
269 | return 0; |
270 | return u * v / t; |
271 | } |
272 | |
273 | static void |
274 | print_s_char(size_t n_bytes, const char *block, const char *fmt_string) |
275 | { |
276 | while (n_bytes--) { |
277 | int tmp = *(signed char *) block; |
278 | printf(fmt_string, tmp); |
279 | block += sizeof(unsigned char); |
280 | } |
281 | } |
282 | |
283 | static void |
284 | print_char(size_t n_bytes, const char *block, const char *fmt_string) |
285 | { |
286 | while (n_bytes--) { |
287 | unsigned tmp = *(unsigned char *) block; |
288 | printf(fmt_string, tmp); |
289 | block += sizeof(unsigned char); |
290 | } |
291 | } |
292 | |
293 | static void |
294 | print_s_short(size_t n_bytes, const char *block, const char *fmt_string) |
295 | { |
296 | n_bytes /= sizeof(signed short); |
297 | while (n_bytes--) { |
298 | int tmp = *(signed short *) block; |
299 | printf(fmt_string, tmp); |
300 | block += sizeof(unsigned short); |
301 | } |
302 | } |
303 | |
304 | static void |
305 | print_short(size_t n_bytes, const char *block, const char *fmt_string) |
306 | { |
307 | n_bytes /= sizeof(unsigned short); |
308 | while (n_bytes--) { |
309 | unsigned tmp = *(unsigned short *) block; |
310 | printf(fmt_string, tmp); |
311 | block += sizeof(unsigned short); |
312 | } |
313 | } |
314 | |
315 | static void |
316 | print_int(size_t n_bytes, const char *block, const char *fmt_string) |
317 | { |
318 | n_bytes /= sizeof(unsigned); |
319 | while (n_bytes--) { |
320 | unsigned tmp = *(unsigned *) block; |
321 | printf(fmt_string, tmp); |
322 | block += sizeof(unsigned); |
323 | } |
324 | } |
325 | |
326 | #if UINT_MAX == ULONG_MAX |
327 | # define print_long print_int |
328 | #else |
329 | static void |
330 | print_long(size_t n_bytes, const char *block, const char *fmt_string) |
331 | { |
332 | n_bytes /= sizeof(unsigned long); |
333 | while (n_bytes--) { |
334 | unsigned long tmp = *(unsigned long *) block; |
335 | printf(fmt_string, tmp); |
336 | block += sizeof(unsigned long); |
337 | } |
338 | } |
339 | #endif |
340 | |
341 | #if ULONG_MAX == ULLONG_MAX |
342 | # define print_long_long print_long |
343 | #else |
344 | static void |
345 | print_long_long(size_t n_bytes, const char *block, const char *fmt_string) |
346 | { |
347 | n_bytes /= sizeof(ulonglong_t); |
348 | while (n_bytes--) { |
349 | ulonglong_t tmp = *(ulonglong_t *) block; |
350 | printf(fmt_string, tmp); |
351 | block += sizeof(ulonglong_t); |
352 | } |
353 | } |
354 | #endif |
355 | |
356 | static void |
357 | print_float(size_t n_bytes, const char *block, const char *fmt_string) |
358 | { |
359 | n_bytes /= sizeof(float); |
360 | while (n_bytes--) { |
361 | float tmp = *(float *) block; |
362 | printf(fmt_string, tmp); |
363 | block += sizeof(float); |
364 | } |
365 | } |
366 | |
367 | static void |
368 | print_double(size_t n_bytes, const char *block, const char *fmt_string) |
369 | { |
370 | n_bytes /= sizeof(double); |
371 | while (n_bytes--) { |
372 | double tmp = *(double *) block; |
373 | printf(fmt_string, tmp); |
374 | block += sizeof(double); |
375 | } |
376 | } |
377 | |
378 | static void |
379 | print_long_double(size_t n_bytes, const char *block, const char *fmt_string) |
380 | { |
381 | n_bytes /= sizeof(longdouble_t); |
382 | while (n_bytes--) { |
383 | longdouble_t tmp = *(longdouble_t *) block; |
384 | printf(fmt_string, tmp); |
385 | block += sizeof(longdouble_t); |
386 | } |
387 | } |
388 | |
389 | /* print_[named]_ascii are optimized for speed. |
390 | * Remember, someday you may want to pump gigabytes through this thing. |
391 | * Saving a dozen of .text bytes here is counter-productive */ |
392 | |
393 | static void |
394 | print_named_ascii(size_t n_bytes, const char *block, |
395 | const char *unused_fmt_string UNUSED_PARAM) |
396 | { |
397 | /* Names for some non-printing characters. */ |
398 | static const char charname[33][3] ALIGN1 = { |
399 | "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", |
400 | " bs", " ht", " nl", " vt", " ff", " cr", " so", " si", |
401 | "dle", "dc1", "dc2", "dc3", "dc4", "nak", "syn", "etb", |
402 | "can", " em", "sub", "esc", " fs", " gs", " rs", " us", |
403 | " sp" |
404 | }; |
405 | // buf[N] pos: 01234 56789 |
406 | char buf[12] = " x\0 xxx\0"; |
407 | // [12] because we take three 32bit stack slots anyway, and |
408 | // gcc is too dumb to initialize with constant stores, |
409 | // it copies initializer from rodata. Oh well. |
410 | // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65410 |
411 | |
412 | while (n_bytes--) { |
413 | unsigned masked_c = *(unsigned char *) block++; |
414 | |
415 | masked_c &= 0x7f; |
416 | if (masked_c == 0x7f) { |
417 | fputs(" del", stdout); |
418 | continue; |
419 | } |
420 | if (masked_c > ' ') { |
421 | buf[3] = masked_c; |
422 | fputs(buf, stdout); |
423 | continue; |
424 | } |
425 | /* Why? Because printf(" %3.3s") is much slower... */ |
426 | buf[6] = charname[masked_c][0]; |
427 | buf[7] = charname[masked_c][1]; |
428 | buf[8] = charname[masked_c][2]; |
429 | fputs(buf+5, stdout); |
430 | } |
431 | } |
432 | |
433 | static void |
434 | print_ascii(size_t n_bytes, const char *block, |
435 | const char *unused_fmt_string UNUSED_PARAM) |
436 | { |
437 | // buf[N] pos: 01234 56789 |
438 | char buf[12] = " x\0 xxx\0"; |
439 | |
440 | while (n_bytes--) { |
441 | const char *s; |
442 | unsigned c = *(unsigned char *) block++; |
443 | |
444 | if (ISPRINT(c)) { |
445 | buf[3] = c; |
446 | fputs(buf, stdout); |
447 | continue; |
448 | } |
449 | switch (c) { |
450 | case '\0': |
451 | s = " \\0"; |
452 | break; |
453 | case '\007': |
454 | s = " \\a"; |
455 | break; |
456 | case '\b': |
457 | s = " \\b"; |
458 | break; |
459 | case '\f': |
460 | s = " \\f"; |
461 | break; |
462 | case '\n': |
463 | s = " \\n"; |
464 | break; |
465 | case '\r': |
466 | s = " \\r"; |
467 | break; |
468 | case '\t': |
469 | s = " \\t"; |
470 | break; |
471 | case '\v': |
472 | s = " \\v"; |
473 | break; |
474 | default: |
475 | buf[6] = (c >> 6 & 3) + '0'; |
476 | buf[7] = (c >> 3 & 7) + '0'; |
477 | buf[8] = (c & 7) + '0'; |
478 | s = buf + 5; |
479 | } |
480 | fputs(s, stdout); |
481 | } |
482 | } |
483 | |
484 | /* Given a list of one or more input filenames FILE_LIST, set the global |
485 | file pointer IN_STREAM and the global string INPUT_FILENAME to the |
486 | first one that can be successfully opened. Modify FILE_LIST to |
487 | reference the next filename in the list. A file name of "-" is |
488 | interpreted as standard input. If any file open fails, give an error |
489 | message and return nonzero. */ |
490 | |
491 | static void |
492 | open_next_file(void) |
493 | { |
494 | while (1) { |
495 | if (!*G.file_list) |
496 | return; |
497 | G.in_stream = fopen_or_warn_stdin(*G.file_list++); |
498 | if (G.in_stream) { |
499 | break; |
500 | } |
501 | G.exit_code = 1; |
502 | } |
503 | |
504 | if ((option_mask32 & (OPT_N|OPT_S)) == OPT_N) |
505 | setbuf(G.in_stream, NULL); |
506 | } |
507 | |
508 | /* Test whether there have been errors on in_stream, and close it if |
509 | it is not standard input. Return nonzero if there has been an error |
510 | on in_stream or stdout; return zero otherwise. This function will |
511 | report more than one error only if both a read and a write error |
512 | have occurred. IN_ERRNO, if nonzero, is the error number |
513 | corresponding to the most recent action for IN_STREAM. */ |
514 | |
515 | static void |
516 | check_and_close(void) |
517 | { |
518 | if (G.in_stream) { |
519 | if (ferror(G.in_stream)) { |
520 | bb_error_msg("%s: read error", (G.in_stream == stdin) |
521 | ? bb_msg_standard_input |
522 | : G.file_list[-1] |
523 | ); |
524 | G.exit_code = 1; |
525 | } |
526 | fclose_if_not_stdin(G.in_stream); |
527 | G.in_stream = NULL; |
528 | } |
529 | |
530 | if (ferror(stdout)) { |
531 | bb_error_msg_and_die(bb_msg_write_error); |
532 | } |
533 | } |
534 | |
535 | /* If S points to a single valid modern od format string, put |
536 | a description of that format in *TSPEC, return pointer to |
537 | character following the just-decoded format. |
538 | For example, if S were "d4afL", we will return a rtp to "afL" |
539 | and *TSPEC would be |
540 | { |
541 | fmt = SIGNED_DECIMAL; |
542 | size = INT or LONG; (whichever integral_type_size[4] resolves to) |
543 | print_function = print_int; (assuming size == INT) |
544 | fmt_string = "%011d%c"; |
545 | } |
546 | S_ORIG is solely for reporting errors. It should be the full format |
547 | string argument. */ |
548 | |
549 | static NOINLINE const char * |
550 | decode_one_format(const char *s_orig, const char *s, struct tspec *tspec) |
551 | { |
552 | enum size_spec size_spec; |
553 | unsigned size; |
554 | enum output_format fmt; |
555 | const char *p; |
556 | char *end; |
557 | char *fmt_string = NULL; |
558 | void (*print_function) (size_t, const char *, const char *); |
559 | unsigned c; |
560 | unsigned field_width = 0; |
561 | int pos; |
562 | |
563 | switch (*s) { |
564 | case 'd': |
565 | case 'o': |
566 | case 'u': |
567 | case 'x': { |
568 | static const char CSIL[] ALIGN1 = "CSIL"; |
569 | |
570 | c = *s++; |
571 | p = strchr(CSIL, *s); |
572 | /* if *s == NUL, p != NULL! Testcase: "od -tx" */ |
573 | if (!p || *p == '\0') { |
574 | size = sizeof(int); |
575 | if (isdigit(s[0])) { |
576 | size = bb_strtou(s, &end, 0); |
577 | if (errno == ERANGE |
578 | || MAX_INTEGRAL_TYPE_SIZE < size |
579 | || integral_type_size[size] == NO_SIZE |
580 | ) { |
581 | bb_error_msg_and_die("invalid type string '%s'; " |
582 | "%u-byte %s type is not supported", |
583 | s_orig, size, "integral"); |
584 | } |
585 | s = end; |
586 | } |
587 | } else { |
588 | static const uint8_t CSIL_sizeof[4] = { |
589 | sizeof(char), |
590 | sizeof(short), |
591 | sizeof(int), |
592 | sizeof(long), |
593 | }; |
594 | size = CSIL_sizeof[p - CSIL]; |
595 | s++; /* skip C/S/I/L */ |
596 | } |
597 | |
598 | #define ISPEC_TO_FORMAT(Spec, Min_format, Long_format, Max_format) \ |
599 | ((Spec) == LONG_LONG ? (Max_format) \ |
600 | : ((Spec) == LONG ? (Long_format) : (Min_format))) |
601 | |
602 | #define FMT_BYTES_ALLOCATED 9 |
603 | size_spec = integral_type_size[size]; |
604 | |
605 | { |
606 | static const char doux[] ALIGN1 = "doux"; |
607 | static const char doux_fmt_letter[][4] = { |
608 | "lld", "llo", "llu", "llx" |
609 | }; |
610 | static const enum output_format doux_fmt[] = { |
611 | SIGNED_DECIMAL, |
612 | OCTAL, |
613 | UNSIGNED_DECIMAL, |
614 | HEXADECIMAL, |
615 | }; |
616 | static const uint8_t *const doux_bytes_to_XXX[] = { |
617 | bytes_to_signed_dec_digits, |
618 | bytes_to_oct_digits, |
619 | bytes_to_unsigned_dec_digits, |
620 | bytes_to_hex_digits, |
621 | }; |
622 | static const char doux_fmtstring[][sizeof(" %%0%u%s")] = { |
623 | " %%%u%s", |
624 | " %%0%u%s", |
625 | " %%%u%s", |
626 | " %%0%u%s", |
627 | }; |
628 | |
629 | pos = strchr(doux, c) - doux; |
630 | fmt = doux_fmt[pos]; |
631 | field_width = doux_bytes_to_XXX[pos][size]; |
632 | p = doux_fmt_letter[pos] + 2; |
633 | if (size_spec == LONG) p--; |
634 | if (size_spec == LONG_LONG) p -= 2; |
635 | fmt_string = xasprintf(doux_fmtstring[pos], field_width, p); |
636 | } |
637 | |
638 | switch (size_spec) { |
639 | case CHAR: |
640 | print_function = (fmt == SIGNED_DECIMAL |
641 | ? print_s_char |
642 | : print_char); |
643 | break; |
644 | case SHORT: |
645 | print_function = (fmt == SIGNED_DECIMAL |
646 | ? print_s_short |
647 | : print_short); |
648 | break; |
649 | case INT: |
650 | print_function = print_int; |
651 | break; |
652 | case LONG: |
653 | print_function = print_long; |
654 | break; |
655 | default: /* case LONG_LONG: */ |
656 | print_function = print_long_long; |
657 | break; |
658 | } |
659 | break; |
660 | } |
661 | |
662 | case 'f': { |
663 | static const char FDL[] ALIGN1 = "FDL"; |
664 | |
665 | fmt = FLOATING_POINT; |
666 | ++s; |
667 | p = strchr(FDL, *s); |
668 | if (!p) { |
669 | size = sizeof(double); |
670 | if (isdigit(s[0])) { |
671 | size = bb_strtou(s, &end, 0); |
672 | if (errno == ERANGE || size > MAX_FP_TYPE_SIZE |
673 | || fp_type_size[size] == NO_SIZE |
674 | ) { |
675 | bb_error_msg_and_die("invalid type string '%s'; " |
676 | "%u-byte %s type is not supported", |
677 | s_orig, size, "floating point"); |
678 | } |
679 | s = end; |
680 | } |
681 | } else { |
682 | static const uint8_t FDL_sizeof[] = { |
683 | sizeof(float), |
684 | sizeof(double), |
685 | sizeof(longdouble_t), |
686 | }; |
687 | |
688 | size = FDL_sizeof[p - FDL]; |
689 | } |
690 | |
691 | size_spec = fp_type_size[size]; |
692 | |
693 | switch (size_spec) { |
694 | case FLOAT_SINGLE: |
695 | print_function = print_float; |
696 | field_width = FLT_DIG + 8; |
697 | /* Don't use %#e; not all systems support it. */ |
698 | fmt_string = xasprintf(" %%%d.%de", field_width, FLT_DIG); |
699 | break; |
700 | case FLOAT_DOUBLE: |
701 | print_function = print_double; |
702 | field_width = DBL_DIG + 8; |
703 | fmt_string = xasprintf(" %%%d.%de", field_width, DBL_DIG); |
704 | break; |
705 | default: /* case FLOAT_LONG_DOUBLE: */ |
706 | print_function = print_long_double; |
707 | field_width = LDBL_DIG + 8; |
708 | fmt_string = xasprintf(" %%%d.%dLe", field_width, LDBL_DIG); |
709 | break; |
710 | } |
711 | break; |
712 | } |
713 | |
714 | case 'a': |
715 | ++s; |
716 | fmt = NAMED_CHARACTER; |
717 | size_spec = CHAR; |
718 | print_function = print_named_ascii; |
719 | field_width = 3; |
720 | break; |
721 | case 'c': |
722 | ++s; |
723 | fmt = CHARACTER; |
724 | size_spec = CHAR; |
725 | print_function = print_ascii; |
726 | field_width = 3; |
727 | break; |
728 | default: |
729 | bb_error_msg_and_die("invalid character '%c' " |
730 | "in type string '%s'", *s, s_orig); |
731 | } |
732 | |
733 | tspec->size = size_spec; |
734 | tspec->fmt = fmt; |
735 | tspec->print_function = print_function; |
736 | tspec->fmt_string = fmt_string; |
737 | |
738 | tspec->field_width = field_width; |
739 | tspec->hexl_mode_trailer = (*s == 'z'); |
740 | if (tspec->hexl_mode_trailer) |
741 | s++; |
742 | |
743 | return s; |
744 | } |
745 | |
746 | /* Decode the modern od format string S. Append the decoded |
747 | representation to the global array SPEC, reallocating SPEC if |
748 | necessary. */ |
749 | |
750 | static void |
751 | decode_format_string(const char *s) |
752 | { |
753 | const char *s_orig = s; |
754 | |
755 | while (*s != '\0') { |
756 | struct tspec tspec; |
757 | const char *next; |
758 | |
759 | next = decode_one_format(s_orig, s, &tspec); |
760 | |
761 | assert(s != next); |
762 | s = next; |
763 | G.spec = xrealloc_vector(G.spec, 4, G.n_specs); |
764 | memcpy(&G.spec[G.n_specs], &tspec, sizeof(G.spec[0])); |
765 | G.n_specs++; |
766 | } |
767 | } |
768 | |
769 | /* Given a list of one or more input filenames FILE_LIST, set the global |
770 | file pointer IN_STREAM to position N_SKIP in the concatenation of |
771 | those files. If any file operation fails or if there are fewer than |
772 | N_SKIP bytes in the combined input, give an error message and return |
773 | nonzero. When possible, use seek rather than read operations to |
774 | advance IN_STREAM. */ |
775 | |
776 | static void |
777 | skip(off_t n_skip) |
778 | { |
779 | if (n_skip == 0) |
780 | return; |
781 | |
782 | while (G.in_stream) { /* !EOF */ |
783 | struct stat file_stats; |
784 | |
785 | /* First try seeking. For large offsets, this extra work is |
786 | worthwhile. If the offset is below some threshold it may be |
787 | more efficient to move the pointer by reading. There are two |
788 | issues when trying to seek: |
789 | - the file must be seekable. |
790 | - before seeking to the specified position, make sure |
791 | that the new position is in the current file. |
792 | Try to do that by getting file's size using fstat. |
793 | But that will work only for regular files. */ |
794 | |
795 | /* The st_size field is valid only for regular files |
796 | (and for symbolic links, which cannot occur here). |
797 | If the number of bytes left to skip is at least |
798 | as large as the size of the current file, we can |
799 | decrement n_skip and go on to the next file. */ |
800 | if (fstat(fileno(G.in_stream), &file_stats) == 0 |
801 | && S_ISREG(file_stats.st_mode) && file_stats.st_size > 0 |
802 | ) { |
803 | if (file_stats.st_size < n_skip) { |
804 | n_skip -= file_stats.st_size; |
805 | /* take "check & close / open_next" route */ |
806 | } else { |
807 | if (fseeko(G.in_stream, n_skip, SEEK_CUR) != 0) |
808 | G.exit_code = 1; |
809 | return; |
810 | } |
811 | } else { |
812 | /* If it's not a regular file with positive size, |
813 | position the file pointer by reading. */ |
814 | char buf[1024]; |
815 | size_t n_bytes_to_read = 1024; |
816 | size_t n_bytes_read; |
817 | |
818 | while (n_skip > 0) { |
819 | if (n_skip < n_bytes_to_read) |
820 | n_bytes_to_read = n_skip; |
821 | n_bytes_read = fread(buf, 1, n_bytes_to_read, G.in_stream); |
822 | n_skip -= n_bytes_read; |
823 | if (n_bytes_read != n_bytes_to_read) |
824 | break; /* EOF on this file or error */ |
825 | } |
826 | } |
827 | if (n_skip == 0) |
828 | return; |
829 | |
830 | check_and_close(); |
831 | open_next_file(); |
832 | } |
833 | |
834 | if (n_skip) |
835 | bb_error_msg_and_die("can't skip past end of combined input"); |
836 | } |
837 | |
838 | |
839 | typedef void FN_format_address(off_t address, char c); |
840 | |
841 | static void |
842 | format_address_none(off_t address UNUSED_PARAM, char c UNUSED_PARAM) |
843 | { |
844 | } |
845 | |
846 | static char address_fmt[] ALIGN1 = "%0n"OFF_FMT"xc"; |
847 | /* Corresponds to 'x' above */ |
848 | #define address_base_char address_fmt[sizeof(address_fmt)-3] |
849 | /* Corresponds to 'n' above */ |
850 | #define address_pad_len_char address_fmt[2] |
851 | |
852 | static void |
853 | format_address_std(off_t address, char c) |
854 | { |
855 | /* Corresponds to 'c' */ |
856 | address_fmt[sizeof(address_fmt)-2] = c; |
857 | printf(address_fmt, address); |
858 | } |
859 | |
860 | #if ENABLE_LONG_OPTS |
861 | /* only used with --traditional */ |
862 | static void |
863 | format_address_paren(off_t address, char c) |
864 | { |
865 | putchar('('); |
866 | format_address_std(address, ')'); |
867 | if (c) putchar(c); |
868 | } |
869 | |
870 | static void |
871 | format_address_label(off_t address, char c) |
872 | { |
873 | format_address_std(address, ' '); |
874 | format_address_paren(address + G_pseudo_offset, c); |
875 | } |
876 | #endif |
877 | |
878 | static void |
879 | dump_hexl_mode_trailer(size_t n_bytes, const char *block) |
880 | { |
881 | fputs(" >", stdout); |
882 | while (n_bytes--) { |
883 | unsigned c = *(unsigned char *) block++; |
884 | c = (ISPRINT(c) ? c : '.'); |
885 | putchar(c); |
886 | } |
887 | putchar('<'); |
888 | } |
889 | |
890 | /* Write N_BYTES bytes from CURR_BLOCK to standard output once for each |
891 | of the N_SPEC format specs. CURRENT_OFFSET is the byte address of |
892 | CURR_BLOCK in the concatenation of input files, and it is printed |
893 | (optionally) only before the output line associated with the first |
894 | format spec. When duplicate blocks are being abbreviated, the output |
895 | for a sequence of identical input blocks is the output for the first |
896 | block followed by an asterisk alone on a line. It is valid to compare |
897 | the blocks PREV_BLOCK and CURR_BLOCK only when N_BYTES == BYTES_PER_BLOCK. |
898 | That condition may be false only for the last input block -- and then |
899 | only when it has not been padded to length BYTES_PER_BLOCK. */ |
900 | |
901 | static void |
902 | write_block(off_t current_offset, size_t n_bytes, |
903 | const char *prev_block, const char *curr_block) |
904 | { |
905 | unsigned i; |
906 | |
907 | if (!(option_mask32 & OPT_v) |
908 | && G.not_first |
909 | && n_bytes == G.bytes_per_block |
910 | && memcmp(prev_block, curr_block, G.bytes_per_block) == 0 |
911 | ) { |
912 | if (G.prev_pair_equal) { |
913 | /* The two preceding blocks were equal, and the current |
914 | block is the same as the last one, so print nothing. */ |
915 | } else { |
916 | puts("*"); |
917 | G.prev_pair_equal = 1; |
918 | } |
919 | } else { |
920 | G.not_first = 1; |
921 | G.prev_pair_equal = 0; |
922 | for (i = 0; i < G.n_specs; i++) { |
923 | if (i == 0) |
924 | G.format_address(current_offset, '\0'); |
925 | else |
926 | printf("%*s", address_pad_len_char - '0', ""); |
927 | (*G.spec[i].print_function) (n_bytes, curr_block, G.spec[i].fmt_string); |
928 | if (G.spec[i].hexl_mode_trailer) { |
929 | /* space-pad out to full line width, then dump the trailer */ |
930 | unsigned datum_width = width_bytes[G.spec[i].size]; |
931 | unsigned blank_fields = (G.bytes_per_block - n_bytes) / datum_width; |
932 | unsigned field_width = G.spec[i].field_width + 1; |
933 | printf("%*s", blank_fields * field_width, ""); |
934 | dump_hexl_mode_trailer(n_bytes, curr_block); |
935 | } |
936 | putchar('\n'); |
937 | } |
938 | } |
939 | } |
940 | |
941 | static void |
942 | read_block(size_t n, char *block, size_t *n_bytes_in_buffer) |
943 | { |
944 | assert(0 < n && n <= G.bytes_per_block); |
945 | |
946 | *n_bytes_in_buffer = 0; |
947 | |
948 | if (n == 0) |
949 | return; |
950 | |
951 | while (G.in_stream != NULL) { /* EOF. */ |
952 | size_t n_needed; |
953 | size_t n_read; |
954 | |
955 | n_needed = n - *n_bytes_in_buffer; |
956 | n_read = fread(block + *n_bytes_in_buffer, 1, n_needed, G.in_stream); |
957 | *n_bytes_in_buffer += n_read; |
958 | if (n_read == n_needed) |
959 | break; |
960 | /* error check is done in check_and_close */ |
961 | check_and_close(); |
962 | open_next_file(); |
963 | } |
964 | } |
965 | |
966 | /* Return the least common multiple of the sizes associated |
967 | with the format specs. */ |
968 | |
969 | static int |
970 | get_lcm(void) |
971 | { |
972 | size_t i; |
973 | int l_c_m = 1; |
974 | |
975 | for (i = 0; i < G.n_specs; i++) |
976 | l_c_m = lcm(l_c_m, width_bytes[(int) G.spec[i].size]); |
977 | return l_c_m; |
978 | } |
979 | |
980 | /* Read a chunk of size BYTES_PER_BLOCK from the input files, write the |
981 | formatted block to standard output, and repeat until the specified |
982 | maximum number of bytes has been read or until all input has been |
983 | processed. If the last block read is smaller than BYTES_PER_BLOCK |
984 | and its size is not a multiple of the size associated with a format |
985 | spec, extend the input block with zero bytes until its length is a |
986 | multiple of all format spec sizes. Write the final block. Finally, |
987 | write on a line by itself the offset of the byte after the last byte |
988 | read. */ |
989 | |
990 | static void |
991 | dump(off_t current_offset, off_t end_offset) |
992 | { |
993 | char *block[2]; |
994 | int idx; |
995 | size_t n_bytes_read; |
996 | |
997 | block[0] = xmalloc(2 * G.bytes_per_block); |
998 | block[1] = block[0] + G.bytes_per_block; |
999 | |
1000 | idx = 0; |
1001 | if (option_mask32 & OPT_N) { |
1002 | while (1) { |
1003 | size_t n_needed; |
1004 | if (current_offset >= end_offset) { |
1005 | n_bytes_read = 0; |
1006 | break; |
1007 | } |
1008 | n_needed = MIN(end_offset - current_offset, (off_t) G.bytes_per_block); |
1009 | read_block(n_needed, block[idx], &n_bytes_read); |
1010 | if (n_bytes_read < G.bytes_per_block) |
1011 | break; |
1012 | assert(n_bytes_read == G.bytes_per_block); |
1013 | write_block(current_offset, n_bytes_read, block[idx ^ 1], block[idx]); |
1014 | current_offset += n_bytes_read; |
1015 | idx ^= 1; |
1016 | } |
1017 | } else { |
1018 | while (1) { |
1019 | read_block(G.bytes_per_block, block[idx], &n_bytes_read); |
1020 | if (n_bytes_read < G.bytes_per_block) |
1021 | break; |
1022 | assert(n_bytes_read == G.bytes_per_block); |
1023 | write_block(current_offset, n_bytes_read, block[idx ^ 1], block[idx]); |
1024 | current_offset += n_bytes_read; |
1025 | idx ^= 1; |
1026 | } |
1027 | } |
1028 | |
1029 | if (n_bytes_read > 0) { |
1030 | int l_c_m; |
1031 | size_t bytes_to_write; |
1032 | |
1033 | l_c_m = get_lcm(); |
1034 | |
1035 | /* Make bytes_to_write the smallest multiple of l_c_m that |
1036 | is at least as large as n_bytes_read. */ |
1037 | bytes_to_write = l_c_m * ((n_bytes_read + l_c_m - 1) / l_c_m); |
1038 | |
1039 | memset(block[idx] + n_bytes_read, 0, bytes_to_write - n_bytes_read); |
1040 | write_block(current_offset, bytes_to_write, |
1041 | block[idx ^ 1], block[idx]); |
1042 | current_offset += n_bytes_read; |
1043 | } |
1044 | |
1045 | G.format_address(current_offset, '\n'); |
1046 | |
1047 | if ((option_mask32 & OPT_N) && current_offset >= end_offset) |
1048 | check_and_close(); |
1049 | |
1050 | free(block[0]); |
1051 | } |
1052 | |
1053 | /* Read N bytes into BLOCK from the concatenation of the input files |
1054 | named in the global array FILE_LIST. On the first call to this |
1055 | function, the global variable IN_STREAM is expected to be an open |
1056 | stream associated with the input file INPUT_FILENAME. If all N |
1057 | bytes cannot be read from IN_STREAM, close IN_STREAM and update |
1058 | the global variables IN_STREAM and INPUT_FILENAME. Then try to |
1059 | read the remaining bytes from the newly opened file. Repeat if |
1060 | necessary until EOF is reached for the last file in FILE_LIST. |
1061 | On subsequent calls, don't modify BLOCK and return zero. Set |
1062 | *N_BYTES_IN_BUFFER to the number of bytes read. If an error occurs, |
1063 | it will be detected through ferror when the stream is about to be |
1064 | closed. If there is an error, give a message but continue reading |
1065 | as usual and return nonzero. Otherwise return zero. */ |
1066 | |
1067 | /* STRINGS mode. Find each "string constant" in the input. |
1068 | A string constant is a run of at least 'string_min' ASCII |
1069 | graphic (or formatting) characters terminated by a null. |
1070 | Based on a function written by Richard Stallman for a |
1071 | traditional version of od. */ |
1072 | |
1073 | static void |
1074 | dump_strings(off_t address, off_t end_offset) |
1075 | { |
1076 | unsigned bufsize = MAX(100, G.string_min); |
1077 | unsigned char *buf = xmalloc(bufsize); |
1078 | |
1079 | while (1) { |
1080 | size_t i; |
1081 | int c; |
1082 | |
1083 | /* See if the next 'G.string_min' chars are all printing chars. */ |
1084 | tryline: |
1085 | if ((option_mask32 & OPT_N) && (end_offset - G.string_min <= address)) |
1086 | break; |
1087 | i = 0; |
1088 | while (!(option_mask32 & OPT_N) || address < end_offset) { |
1089 | if (i == bufsize) { |
1090 | bufsize += bufsize/8; |
1091 | buf = xrealloc(buf, bufsize); |
1092 | } |
1093 | |
1094 | while (G.in_stream) { /* !EOF */ |
1095 | c = fgetc(G.in_stream); |
1096 | if (c != EOF) |
1097 | goto got_char; |
1098 | check_and_close(); |
1099 | open_next_file(); |
1100 | } |
1101 | /* EOF */ |
1102 | goto ret; |
1103 | got_char: |
1104 | address++; |
1105 | if (!c) |
1106 | break; |
1107 | if (!ISPRINT(c)) |
1108 | goto tryline; /* It isn't; give up on this string. */ |
1109 | buf[i++] = c; /* String continues; store it all. */ |
1110 | } |
1111 | |
1112 | if (i < G.string_min) /* Too short! */ |
1113 | goto tryline; |
1114 | |
1115 | /* If we get here, the string is all printable and NUL-terminated */ |
1116 | buf[i] = 0; |
1117 | G.format_address(address - i - 1, ' '); |
1118 | |
1119 | for (i = 0; (c = buf[i]); i++) { |
1120 | switch (c) { |
1121 | case '\007': fputs("\\a", stdout); break; |
1122 | case '\b': fputs("\\b", stdout); break; |
1123 | case '\f': fputs("\\f", stdout); break; |
1124 | case '\n': fputs("\\n", stdout); break; |
1125 | case '\r': fputs("\\r", stdout); break; |
1126 | case '\t': fputs("\\t", stdout); break; |
1127 | case '\v': fputs("\\v", stdout); break; |
1128 | default: putchar(c); |
1129 | } |
1130 | } |
1131 | putchar('\n'); |
1132 | } |
1133 | |
1134 | /* We reach this point only if we search through |
1135 | (max_bytes_to_format - G.string_min) bytes before reaching EOF. */ |
1136 | check_and_close(); |
1137 | ret: |
1138 | free(buf); |
1139 | } |
1140 | |
1141 | #if ENABLE_LONG_OPTS |
1142 | /* If S is a valid traditional offset specification with an optional |
1143 | leading '+' return nonzero and set *OFFSET to the offset it denotes. */ |
1144 | |
1145 | static int |
1146 | parse_old_offset(const char *s, off_t *offset) |
1147 | { |
1148 | static const struct suffix_mult Bb[] = { |
1149 | { "B", 1024 }, |
1150 | { "b", 512 }, |
1151 | { "", 0 } |
1152 | }; |
1153 | char *p; |
1154 | int radix; |
1155 | |
1156 | /* Skip over any leading '+'. */ |
1157 | if (s[0] == '+') ++s; |
1158 | if (!isdigit(s[0])) return 0; /* not a number */ |
1159 | |
1160 | /* Determine the radix we'll use to interpret S. If there is a '.', |
1161 | * it's decimal, otherwise, if the string begins with '0X'or '0x', |
1162 | * it's hexadecimal, else octal. */ |
1163 | p = strchr(s, '.'); |
1164 | radix = 8; |
1165 | if (p) { |
1166 | p[0] = '\0'; /* cheating */ |
1167 | radix = 10; |
1168 | } else if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) |
1169 | radix = 16; |
1170 | |
1171 | *offset = xstrtooff_sfx(s, radix, Bb); |
1172 | if (p) p[0] = '.'; |
1173 | |
1174 | return (*offset >= 0); |
1175 | } |
1176 | #endif |
1177 | |
1178 | int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
1179 | int od_main(int argc UNUSED_PARAM, char **argv) |
1180 | { |
1181 | #if ENABLE_LONG_OPTS |
1182 | static const char od_longopts[] ALIGN1 = |
1183 | "skip-bytes\0" Required_argument "j" |
1184 | "address-radix\0" Required_argument "A" |
1185 | "read-bytes\0" Required_argument "N" |
1186 | "format\0" Required_argument "t" |
1187 | "output-duplicates\0" No_argument "v" |
1188 | /* Yes, it's true: -S NUM, but --strings[=NUM]! |
1189 | * that is, NUM is mandatory for -S but optional for --strings! |
1190 | */ |
1191 | "strings\0" Optional_argument "S" |
1192 | "width\0" Optional_argument "w" |
1193 | "traditional\0" No_argument "\xff" |
1194 | ; |
1195 | #endif |
1196 | const char *str_A, *str_N, *str_j, *str_S = "3"; |
1197 | llist_t *lst_t = NULL; |
1198 | unsigned opt; |
1199 | int l_c_m; |
1200 | /* The number of input bytes to skip before formatting and writing. */ |
1201 | off_t n_bytes_to_skip = 0; |
1202 | /* The offset of the first byte after the last byte to be formatted. */ |
1203 | off_t end_offset = 0; |
1204 | /* The maximum number of bytes that will be formatted. */ |
1205 | off_t max_bytes_to_format = 0; |
1206 | |
1207 | INIT_G(); |
1208 | |
1209 | /*G.spec = NULL; - already is */ |
1210 | G.format_address = format_address_std; |
1211 | address_base_char = 'o'; |
1212 | address_pad_len_char = '7'; |
1213 | |
1214 | /* Parse command line */ |
1215 | #if ENABLE_LONG_OPTS |
1216 | applet_long_options = od_longopts; |
1217 | #endif |
1218 | opt = OD_GETOPT32(); |
1219 | argv += optind; |
1220 | if (opt & OPT_A) { |
1221 | static const char doxn[] ALIGN1 = "doxn"; |
1222 | static const char doxn_address_base_char[] ALIGN1 = { |
1223 | 'u', 'o', 'x', /* '?' fourth one is not important */ |
1224 | }; |
1225 | static const uint8_t doxn_address_pad_len_char[] ALIGN1 = { |
1226 | '7', '7', '6', /* '?' */ |
1227 | }; |
1228 | char *p; |
1229 | int pos; |
1230 | p = strchr(doxn, str_A[0]); |
1231 | if (!p) |
1232 | bb_error_msg_and_die("bad output address radix " |
1233 | "'%c' (must be [doxn])", str_A[0]); |
1234 | pos = p - doxn; |
1235 | if (pos == 3) G.format_address = format_address_none; |
1236 | address_base_char = doxn_address_base_char[pos]; |
1237 | address_pad_len_char = doxn_address_pad_len_char[pos]; |
1238 | } |
1239 | if (opt & OPT_N) { |
1240 | max_bytes_to_format = xstrtooff_sfx(str_N, 0, bkm_suffixes); |
1241 | } |
1242 | if (opt & OPT_a) decode_format_string("a"); |
1243 | if (opt & OPT_b) decode_format_string("oC"); |
1244 | if (opt & OPT_c) decode_format_string("c"); |
1245 | if (opt & OPT_d) decode_format_string("u2"); |
1246 | if (opt & OPT_f) decode_format_string("fF"); |
1247 | if (opt & OPT_h) decode_format_string("x2"); |
1248 | if (opt & OPT_i) decode_format_string("d2"); |
1249 | if (opt & OPT_j) n_bytes_to_skip = xstrtooff_sfx(str_j, 0, bkm_suffixes); |
1250 | if (opt & OPT_l) decode_format_string("d4"); |
1251 | if (opt & OPT_o) decode_format_string("o2"); |
1252 | while (lst_t) { |
1253 | decode_format_string(llist_pop(&lst_t)); |
1254 | } |
1255 | if (opt & OPT_x) decode_format_string("x2"); |
1256 | if (opt & OPT_s) decode_format_string("d2"); |
1257 | if (opt & OPT_S) { |
1258 | G.string_min = xstrtou_sfx(str_S, 0, bkm_suffixes); |
1259 | } |
1260 | |
1261 | // Bloat: |
1262 | //if ((option_mask32 & OPT_S) && G.n_specs > 0) |
1263 | // bb_error_msg_and_die("no type may be specified when dumping strings"); |
1264 | |
1265 | /* If the --traditional option is used, there may be from |
1266 | * 0 to 3 remaining command line arguments; handle each case |
1267 | * separately. |
1268 | * od [FILE] [[+]OFFSET[.][b] [[+]LABEL[.][b]]] |
1269 | * The offset and pseudo_start have the same syntax. |
1270 | * |
1271 | * FIXME: POSIX 1003.1-2001 with XSI requires support for the |
1272 | * traditional syntax even if --traditional is not given. */ |
1273 | |
1274 | #if ENABLE_LONG_OPTS |
1275 | if (opt & OPT_traditional) { |
1276 | if (argv[0]) { |
1277 | off_t pseudo_start = -1; |
1278 | off_t o1, o2; |
1279 | |
1280 | if (!argv[1]) { /* one arg */ |
1281 | if (parse_old_offset(argv[0], &o1)) { |
1282 | /* od --traditional OFFSET */ |
1283 | n_bytes_to_skip = o1; |
1284 | argv++; |
1285 | } |
1286 | /* od --traditional FILE */ |
1287 | } else if (!argv[2]) { /* two args */ |
1288 | if (parse_old_offset(argv[0], &o1) |
1289 | && parse_old_offset(argv[1], &o2) |
1290 | ) { |
1291 | /* od --traditional OFFSET LABEL */ |
1292 | n_bytes_to_skip = o1; |
1293 | pseudo_start = o2; |
1294 | argv += 2; |
1295 | } else if (parse_old_offset(argv[1], &o2)) { |
1296 | /* od --traditional FILE OFFSET */ |
1297 | n_bytes_to_skip = o2; |
1298 | argv[1] = NULL; |
1299 | } else { |
1300 | bb_error_msg_and_die("invalid second argument '%s'", argv[1]); |
1301 | } |
1302 | } else if (!argv[3]) { /* three args */ |
1303 | if (parse_old_offset(argv[1], &o1) |
1304 | && parse_old_offset(argv[2], &o2) |
1305 | ) { |
1306 | /* od --traditional FILE OFFSET LABEL */ |
1307 | n_bytes_to_skip = o1; |
1308 | pseudo_start = o2; |
1309 | argv[1] = NULL; |
1310 | } else { |
1311 | bb_error_msg_and_die("the last two arguments must be offsets"); |
1312 | } |
1313 | } else { /* >3 args */ |
1314 | bb_error_msg_and_die("too many arguments"); |
1315 | } |
1316 | |
1317 | if (pseudo_start >= 0) { |
1318 | if (G.format_address == format_address_none) { |
1319 | address_base_char = 'o'; |
1320 | address_pad_len_char = '7'; |
1321 | G.format_address = format_address_paren; |
1322 | } else { |
1323 | G.format_address = format_address_label; |
1324 | } |
1325 | G_pseudo_offset = pseudo_start - n_bytes_to_skip; |
1326 | } |
1327 | } |
1328 | /* else: od --traditional (without args) */ |
1329 | } |
1330 | #endif |
1331 | |
1332 | if (option_mask32 & OPT_N) { |
1333 | end_offset = n_bytes_to_skip + max_bytes_to_format; |
1334 | if (end_offset < n_bytes_to_skip) |
1335 | bb_error_msg_and_die("SKIP + SIZE is too large"); |
1336 | } |
1337 | |
1338 | if (G.n_specs == 0) { |
1339 | decode_format_string("o2"); |
1340 | /*G.n_specs = 1; - done by decode_format_string */ |
1341 | } |
1342 | |
1343 | /* If no files were listed on the command line, |
1344 | set the global pointer FILE_LIST so that it |
1345 | references the null-terminated list of one name: "-". */ |
1346 | G.file_list = bb_argv_dash; |
1347 | if (argv[0]) { |
1348 | /* Set the global pointer FILE_LIST so that it |
1349 | references the first file-argument on the command-line. */ |
1350 | G.file_list = (char const *const *) argv; |
1351 | } |
1352 | |
1353 | /* Open the first input file */ |
1354 | open_next_file(); |
1355 | /* Skip over any unwanted header bytes */ |
1356 | skip(n_bytes_to_skip); |
1357 | if (!G.in_stream) |
1358 | return EXIT_FAILURE; |
1359 | |
1360 | /* Compute output block length */ |
1361 | l_c_m = get_lcm(); |
1362 | |
1363 | if (opt & OPT_w) { /* -w: width */ |
1364 | if (!G.bytes_per_block || G.bytes_per_block % l_c_m != 0) { |
1365 | bb_error_msg("warning: invalid width %u; using %d instead", |
1366 | (unsigned)G.bytes_per_block, l_c_m); |
1367 | G.bytes_per_block = l_c_m; |
1368 | } |
1369 | } else { |
1370 | G.bytes_per_block = l_c_m; |
1371 | if (l_c_m < DEFAULT_BYTES_PER_BLOCK) |
1372 | G.bytes_per_block *= DEFAULT_BYTES_PER_BLOCK / l_c_m; |
1373 | } |
1374 | |
1375 | #ifdef DEBUG |
1376 | for (i = 0; i < G.n_specs; i++) { |
1377 | printf("%d: fmt=\"%s\" width=%d\n", |
1378 | i, spec[i].fmt_string, width_bytes[spec[i].size]); |
1379 | } |
1380 | #endif |
1381 | |
1382 | if (option_mask32 & OPT_S) |
1383 | dump_strings(n_bytes_to_skip, end_offset); |
1384 | else |
1385 | dump(n_bytes_to_skip, end_offset); |
1386 | |
1387 | if (fclose(stdin)) |
1388 | bb_perror_msg_and_die("%s", bb_msg_standard_input); |
1389 | |
1390 | return G.exit_code; |
1391 | } |
1392 |