Contents of /tags/mkinitrd-6_1_5/busybox/coreutils/od_bloaty.c
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Wed Aug 5 17:52:52 2009 UTC (15 years, 1 month ago) by niro
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Wed Aug 5 17:52:52 2009 UTC (15 years, 1 month ago) by niro
File MIME type: text/plain
File size: 37917 byte(s)
tagged 'mkinitrd-6_1_5'
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 | |
20 | /* Busyboxed by Denys Vlasenko |
21 | |
22 | Based on od.c from coreutils-5.2.1 |
23 | Top bloat sources: |
24 | |
25 | 00000073 t parse_old_offset |
26 | 0000007b t get_lcm |
27 | 00000090 r long_options |
28 | 00000092 t print_named_ascii |
29 | 000000bf t print_ascii |
30 | 00000168 t write_block |
31 | 00000366 t decode_format_string |
32 | 00000a71 T od_main |
33 | |
34 | Tested for compat with coreutils 6.3 |
35 | using this script. Minor differences fixed. |
36 | |
37 | #!/bin/sh |
38 | echo STD |
39 | time /path/to/coreutils/od \ |
40 | ...params... \ |
41 | >std |
42 | echo Exit code $? |
43 | echo BBOX |
44 | time ./busybox od \ |
45 | ...params... \ |
46 | >bbox |
47 | echo Exit code $? |
48 | diff -u -a std bbox >bbox.diff || { echo Different!; sleep 1; } |
49 | |
50 | */ |
51 | |
52 | #include "libbb.h" |
53 | |
54 | #define assert(a) ((void)0) |
55 | |
56 | /* Check for 0x7f is a coreutils 6.3 addition */ |
57 | #define ISPRINT(c) (((c)>=' ') && (c) != 0x7f) |
58 | |
59 | typedef long double longdouble_t; |
60 | typedef unsigned long long ulonglong_t; |
61 | typedef long long llong; |
62 | |
63 | #if ENABLE_LFS |
64 | # define xstrtooff_sfx xstrtoull_sfx |
65 | #else |
66 | # define xstrtooff_sfx xstrtoul_sfx |
67 | #endif |
68 | |
69 | /* The default number of input bytes per output line. */ |
70 | #define DEFAULT_BYTES_PER_BLOCK 16 |
71 | |
72 | /* The number of decimal digits of precision in a float. */ |
73 | #ifndef FLT_DIG |
74 | # define FLT_DIG 7 |
75 | #endif |
76 | |
77 | /* The number of decimal digits of precision in a double. */ |
78 | #ifndef DBL_DIG |
79 | # define DBL_DIG 15 |
80 | #endif |
81 | |
82 | /* The number of decimal digits of precision in a long double. */ |
83 | #ifndef LDBL_DIG |
84 | # define LDBL_DIG DBL_DIG |
85 | #endif |
86 | |
87 | enum size_spec { |
88 | NO_SIZE, |
89 | CHAR, |
90 | SHORT, |
91 | INT, |
92 | LONG, |
93 | LONG_LONG, |
94 | FLOAT_SINGLE, |
95 | FLOAT_DOUBLE, |
96 | FLOAT_LONG_DOUBLE, |
97 | N_SIZE_SPECS |
98 | }; |
99 | |
100 | enum output_format { |
101 | SIGNED_DECIMAL, |
102 | UNSIGNED_DECIMAL, |
103 | OCTAL, |
104 | HEXADECIMAL, |
105 | FLOATING_POINT, |
106 | NAMED_CHARACTER, |
107 | CHARACTER |
108 | }; |
109 | |
110 | /* Each output format specification (from '-t spec' or from |
111 | old-style options) is represented by one of these structures. */ |
112 | struct tspec { |
113 | enum output_format fmt; |
114 | enum size_spec size; |
115 | void (*print_function) (size_t, const char *, const char *); |
116 | char *fmt_string; |
117 | int hexl_mode_trailer; |
118 | int field_width; |
119 | }; |
120 | |
121 | /* Convert the number of 8-bit bytes of a binary representation to |
122 | the number of characters (digits + sign if the type is signed) |
123 | required to represent the same quantity in the specified base/type. |
124 | For example, a 32-bit (4-byte) quantity may require a field width |
125 | as wide as the following for these types: |
126 | 11 unsigned octal |
127 | 11 signed decimal |
128 | 10 unsigned decimal |
129 | 8 unsigned hexadecimal */ |
130 | |
131 | static const uint8_t bytes_to_oct_digits[] ALIGN1 = |
132 | {0, 3, 6, 8, 11, 14, 16, 19, 22, 25, 27, 30, 32, 35, 38, 41, 43}; |
133 | |
134 | static const uint8_t bytes_to_signed_dec_digits[] ALIGN1 = |
135 | {1, 4, 6, 8, 11, 13, 16, 18, 20, 23, 25, 28, 30, 33, 35, 37, 40}; |
136 | |
137 | static const uint8_t bytes_to_unsigned_dec_digits[] ALIGN1 = |
138 | {0, 3, 5, 8, 10, 13, 15, 17, 20, 22, 25, 27, 29, 32, 34, 37, 39}; |
139 | |
140 | static const uint8_t bytes_to_hex_digits[] ALIGN1 = |
141 | {0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32}; |
142 | |
143 | /* Convert enum size_spec to the size of the named type. */ |
144 | static const signed char width_bytes[] ALIGN1 = { |
145 | -1, |
146 | sizeof(char), |
147 | sizeof(short), |
148 | sizeof(int), |
149 | sizeof(long), |
150 | sizeof(ulonglong_t), |
151 | sizeof(float), |
152 | sizeof(double), |
153 | sizeof(longdouble_t) |
154 | }; |
155 | /* Ensure that for each member of 'enum size_spec' there is an |
156 | initializer in the width_bytes array. */ |
157 | struct ERR_width_bytes_has_bad_size { |
158 | char ERR_width_bytes_has_bad_size[ARRAY_SIZE(width_bytes) == N_SIZE_SPECS ? 1 : -1]; |
159 | }; |
160 | |
161 | static smallint flag_dump_strings; |
162 | /* Non-zero if an old-style 'pseudo-address' was specified. */ |
163 | static smallint flag_pseudo_start; |
164 | static smallint limit_bytes_to_format; |
165 | /* When zero and two or more consecutive blocks are equal, format |
166 | only the first block and output an asterisk alone on the following |
167 | line to indicate that identical blocks have been elided. */ |
168 | static smallint verbose; |
169 | static smallint ioerror; |
170 | |
171 | static size_t string_min; |
172 | |
173 | /* An array of specs describing how to format each input block. */ |
174 | static size_t n_specs; |
175 | static struct tspec *spec; |
176 | |
177 | /* Function that accepts an address and an optional following char, |
178 | and prints the address and char to stdout. */ |
179 | static void (*format_address)(off_t, char); |
180 | /* The difference between the old-style pseudo starting address and |
181 | the number of bytes to skip. */ |
182 | static off_t pseudo_offset; |
183 | /* When zero, MAX_BYTES_TO_FORMAT and END_OFFSET are ignored, and all |
184 | input is formatted. */ |
185 | |
186 | /* The number of input bytes formatted per output line. It must be |
187 | a multiple of the least common multiple of the sizes associated with |
188 | the specified output types. It should be as large as possible, but |
189 | no larger than 16 -- unless specified with the -w option. */ |
190 | static unsigned bytes_per_block = 32; /* have to use unsigned, not size_t */ |
191 | |
192 | /* A NULL-terminated list of the file-arguments from the command line. */ |
193 | static const char *const *file_list; |
194 | |
195 | /* The input stream associated with the current file. */ |
196 | static FILE *in_stream; |
197 | |
198 | #define MAX_INTEGRAL_TYPE_SIZE sizeof(ulonglong_t) |
199 | static const unsigned char integral_type_size[MAX_INTEGRAL_TYPE_SIZE + 1] ALIGN1 = { |
200 | [sizeof(char)] = CHAR, |
201 | #if USHRT_MAX != UCHAR_MAX |
202 | [sizeof(short)] = SHORT, |
203 | #endif |
204 | #if UINT_MAX != USHRT_MAX |
205 | [sizeof(int)] = INT, |
206 | #endif |
207 | #if ULONG_MAX != UINT_MAX |
208 | [sizeof(long)] = LONG, |
209 | #endif |
210 | #if ULLONG_MAX != ULONG_MAX |
211 | [sizeof(ulonglong_t)] = LONG_LONG, |
212 | #endif |
213 | }; |
214 | |
215 | #define MAX_FP_TYPE_SIZE sizeof(longdouble_t) |
216 | static const unsigned char fp_type_size[MAX_FP_TYPE_SIZE + 1] ALIGN1 = { |
217 | /* gcc seems to allow repeated indexes. Last one stays */ |
218 | [sizeof(longdouble_t)] = FLOAT_LONG_DOUBLE, |
219 | [sizeof(double)] = FLOAT_DOUBLE, |
220 | [sizeof(float)] = FLOAT_SINGLE |
221 | }; |
222 | |
223 | |
224 | static unsigned |
225 | gcd(unsigned u, unsigned v) |
226 | { |
227 | unsigned t; |
228 | while (v != 0) { |
229 | t = u % v; |
230 | u = v; |
231 | v = t; |
232 | } |
233 | return u; |
234 | } |
235 | |
236 | /* Compute the least common multiple of U and V. */ |
237 | static unsigned |
238 | lcm(unsigned u, unsigned v) { |
239 | unsigned t = gcd(u, v); |
240 | if (t == 0) |
241 | return 0; |
242 | return u * v / t; |
243 | } |
244 | |
245 | static void |
246 | print_s_char(size_t n_bytes, const char *block, const char *fmt_string) |
247 | { |
248 | while (n_bytes--) { |
249 | int tmp = *(signed char *) block; |
250 | printf(fmt_string, tmp); |
251 | block += sizeof(unsigned char); |
252 | } |
253 | } |
254 | |
255 | static void |
256 | print_char(size_t n_bytes, const char *block, const char *fmt_string) |
257 | { |
258 | while (n_bytes--) { |
259 | unsigned tmp = *(unsigned char *) block; |
260 | printf(fmt_string, tmp); |
261 | block += sizeof(unsigned char); |
262 | } |
263 | } |
264 | |
265 | static void |
266 | print_s_short(size_t n_bytes, const char *block, const char *fmt_string) |
267 | { |
268 | n_bytes /= sizeof(signed short); |
269 | while (n_bytes--) { |
270 | int tmp = *(signed short *) block; |
271 | printf(fmt_string, tmp); |
272 | block += sizeof(unsigned short); |
273 | } |
274 | } |
275 | |
276 | static void |
277 | print_short(size_t n_bytes, const char *block, const char *fmt_string) |
278 | { |
279 | n_bytes /= sizeof(unsigned short); |
280 | while (n_bytes--) { |
281 | unsigned tmp = *(unsigned short *) block; |
282 | printf(fmt_string, tmp); |
283 | block += sizeof(unsigned short); |
284 | } |
285 | } |
286 | |
287 | static void |
288 | print_int(size_t n_bytes, const char *block, const char *fmt_string) |
289 | { |
290 | n_bytes /= sizeof(unsigned); |
291 | while (n_bytes--) { |
292 | unsigned tmp = *(unsigned *) block; |
293 | printf(fmt_string, tmp); |
294 | block += sizeof(unsigned); |
295 | } |
296 | } |
297 | |
298 | #if UINT_MAX == ULONG_MAX |
299 | # define print_long print_int |
300 | #else |
301 | static void |
302 | print_long(size_t n_bytes, const char *block, const char *fmt_string) |
303 | { |
304 | n_bytes /= sizeof(unsigned long); |
305 | while (n_bytes--) { |
306 | unsigned long tmp = *(unsigned long *) block; |
307 | printf(fmt_string, tmp); |
308 | block += sizeof(unsigned long); |
309 | } |
310 | } |
311 | #endif |
312 | |
313 | #if ULONG_MAX == ULLONG_MAX |
314 | # define print_long_long print_long |
315 | #else |
316 | static void |
317 | print_long_long(size_t n_bytes, const char *block, const char *fmt_string) |
318 | { |
319 | n_bytes /= sizeof(ulonglong_t); |
320 | while (n_bytes--) { |
321 | ulonglong_t tmp = *(ulonglong_t *) block; |
322 | printf(fmt_string, tmp); |
323 | block += sizeof(ulonglong_t); |
324 | } |
325 | } |
326 | #endif |
327 | |
328 | static void |
329 | print_float(size_t n_bytes, const char *block, const char *fmt_string) |
330 | { |
331 | n_bytes /= sizeof(float); |
332 | while (n_bytes--) { |
333 | float tmp = *(float *) block; |
334 | printf(fmt_string, tmp); |
335 | block += sizeof(float); |
336 | } |
337 | } |
338 | |
339 | static void |
340 | print_double(size_t n_bytes, const char *block, const char *fmt_string) |
341 | { |
342 | n_bytes /= sizeof(double); |
343 | while (n_bytes--) { |
344 | double tmp = *(double *) block; |
345 | printf(fmt_string, tmp); |
346 | block += sizeof(double); |
347 | } |
348 | } |
349 | |
350 | static void |
351 | print_long_double(size_t n_bytes, const char *block, const char *fmt_string) |
352 | { |
353 | n_bytes /= sizeof(longdouble_t); |
354 | while (n_bytes--) { |
355 | longdouble_t tmp = *(longdouble_t *) block; |
356 | printf(fmt_string, tmp); |
357 | block += sizeof(longdouble_t); |
358 | } |
359 | } |
360 | |
361 | /* print_[named]_ascii are optimized for speed. |
362 | * Remember, someday you may want to pump gigabytes through this thing. |
363 | * Saving a dozen of .text bytes here is counter-productive */ |
364 | |
365 | static void |
366 | print_named_ascii(size_t n_bytes, const char *block, |
367 | const char *unused_fmt_string UNUSED_PARAM) |
368 | { |
369 | /* Names for some non-printing characters. */ |
370 | static const char charname[33][3] ALIGN1 = { |
371 | "nul", "soh", "stx", "etx", "eot", "enq", "ack", "bel", |
372 | " bs", " ht", " nl", " vt", " ff", " cr", " so", " si", |
373 | "dle", "dc1", "dc2", "dc3", "dc4", "nak", "syn", "etb", |
374 | "can", " em", "sub", "esc", " fs", " gs", " rs", " us", |
375 | " sp" |
376 | }; |
377 | // buf[N] pos: 01234 56789 |
378 | char buf[12] = " x\0 0xx\0"; |
379 | // actually " x\0 xxx\0", but I want to share the string with below. |
380 | // [12] because we take three 32bit stack slots anyway, and |
381 | // gcc is too dumb to initialize with constant stores, |
382 | // it copies initializer from rodata. Oh well. |
383 | |
384 | while (n_bytes--) { |
385 | unsigned masked_c = *(unsigned char *) block++; |
386 | |
387 | masked_c &= 0x7f; |
388 | if (masked_c == 0x7f) { |
389 | fputs(" del", stdout); |
390 | continue; |
391 | } |
392 | if (masked_c > ' ') { |
393 | buf[3] = masked_c; |
394 | fputs(buf, stdout); |
395 | continue; |
396 | } |
397 | /* Why? Because printf(" %3.3s") is much slower... */ |
398 | buf[6] = charname[masked_c][0]; |
399 | buf[7] = charname[masked_c][1]; |
400 | buf[8] = charname[masked_c][2]; |
401 | fputs(buf+5, stdout); |
402 | } |
403 | } |
404 | |
405 | static void |
406 | print_ascii(size_t n_bytes, const char *block, |
407 | const char *unused_fmt_string UNUSED_PARAM) |
408 | { |
409 | // buf[N] pos: 01234 56789 |
410 | char buf[12] = " x\0 0xx\0"; |
411 | |
412 | while (n_bytes--) { |
413 | const char *s; |
414 | unsigned c = *(unsigned char *) block++; |
415 | |
416 | if (ISPRINT(c)) { |
417 | buf[3] = c; |
418 | fputs(buf, stdout); |
419 | continue; |
420 | } |
421 | switch (c) { |
422 | case '\0': |
423 | s = " \\0"; |
424 | break; |
425 | case '\007': |
426 | s = " \\a"; |
427 | break; |
428 | case '\b': |
429 | s = " \\b"; |
430 | break; |
431 | case '\f': |
432 | s = " \\f"; |
433 | break; |
434 | case '\n': |
435 | s = " \\n"; |
436 | break; |
437 | case '\r': |
438 | s = " \\r"; |
439 | break; |
440 | case '\t': |
441 | s = " \\t"; |
442 | break; |
443 | case '\v': |
444 | s = " \\v"; |
445 | break; |
446 | case '\x7f': |
447 | s = " 177"; |
448 | break; |
449 | default: /* c is never larger than 040 */ |
450 | buf[7] = (c >> 3) + '0'; |
451 | buf[8] = (c & 7) + '0'; |
452 | s = buf + 5; |
453 | } |
454 | fputs(s, stdout); |
455 | } |
456 | } |
457 | |
458 | /* Given a list of one or more input filenames FILE_LIST, set the global |
459 | file pointer IN_STREAM and the global string INPUT_FILENAME to the |
460 | first one that can be successfully opened. Modify FILE_LIST to |
461 | reference the next filename in the list. A file name of "-" is |
462 | interpreted as standard input. If any file open fails, give an error |
463 | message and return nonzero. */ |
464 | |
465 | static void |
466 | open_next_file(void) |
467 | { |
468 | while (1) { |
469 | if (!*file_list) |
470 | return; |
471 | in_stream = fopen_or_warn_stdin(*file_list++); |
472 | if (in_stream) { |
473 | break; |
474 | } |
475 | ioerror = 1; |
476 | } |
477 | |
478 | if (limit_bytes_to_format && !flag_dump_strings) |
479 | setbuf(in_stream, NULL); |
480 | } |
481 | |
482 | /* Test whether there have been errors on in_stream, and close it if |
483 | it is not standard input. Return nonzero if there has been an error |
484 | on in_stream or stdout; return zero otherwise. This function will |
485 | report more than one error only if both a read and a write error |
486 | have occurred. IN_ERRNO, if nonzero, is the error number |
487 | corresponding to the most recent action for IN_STREAM. */ |
488 | |
489 | static void |
490 | check_and_close(void) |
491 | { |
492 | if (in_stream) { |
493 | if (ferror(in_stream)) { |
494 | bb_error_msg("%s: read error", (in_stream == stdin) |
495 | ? bb_msg_standard_input |
496 | : file_list[-1] |
497 | ); |
498 | ioerror = 1; |
499 | } |
500 | fclose_if_not_stdin(in_stream); |
501 | in_stream = NULL; |
502 | } |
503 | |
504 | if (ferror(stdout)) { |
505 | bb_error_msg("write error"); |
506 | ioerror = 1; |
507 | } |
508 | } |
509 | |
510 | /* If S points to a single valid modern od format string, put |
511 | a description of that format in *TSPEC, return pointer to |
512 | character following the just-decoded format. |
513 | For example, if S were "d4afL", we will return a rtp to "afL" |
514 | and *TSPEC would be |
515 | { |
516 | fmt = SIGNED_DECIMAL; |
517 | size = INT or LONG; (whichever integral_type_size[4] resolves to) |
518 | print_function = print_int; (assuming size == INT) |
519 | fmt_string = "%011d%c"; |
520 | } |
521 | S_ORIG is solely for reporting errors. It should be the full format |
522 | string argument. */ |
523 | |
524 | static const char * |
525 | decode_one_format(const char *s_orig, const char *s, struct tspec *tspec) |
526 | { |
527 | enum size_spec size_spec; |
528 | unsigned size; |
529 | enum output_format fmt; |
530 | const char *p; |
531 | char *end; |
532 | char *fmt_string = NULL; |
533 | void (*print_function) (size_t, const char *, const char *); |
534 | unsigned c; |
535 | unsigned field_width = 0; |
536 | int pos; |
537 | |
538 | |
539 | switch (*s) { |
540 | case 'd': |
541 | case 'o': |
542 | case 'u': |
543 | case 'x': { |
544 | static const char CSIL[] ALIGN1 = "CSIL"; |
545 | |
546 | c = *s++; |
547 | p = strchr(CSIL, *s); |
548 | if (!p) { |
549 | size = sizeof(int); |
550 | if (isdigit(s[0])) { |
551 | size = bb_strtou(s, &end, 0); |
552 | if (errno == ERANGE |
553 | || MAX_INTEGRAL_TYPE_SIZE < size |
554 | || integral_type_size[size] == NO_SIZE |
555 | ) { |
556 | bb_error_msg_and_die("invalid type string '%s'; " |
557 | "%u-byte %s type is not supported", |
558 | s_orig, size, "integral"); |
559 | } |
560 | s = end; |
561 | } |
562 | } else { |
563 | static const uint8_t CSIL_sizeof[4] = { |
564 | sizeof(char), |
565 | sizeof(short), |
566 | sizeof(int), |
567 | sizeof(long), |
568 | }; |
569 | size = CSIL_sizeof[p - CSIL]; |
570 | s++; /* skip C/S/I/L */ |
571 | } |
572 | |
573 | #define ISPEC_TO_FORMAT(Spec, Min_format, Long_format, Max_format) \ |
574 | ((Spec) == LONG_LONG ? (Max_format) \ |
575 | : ((Spec) == LONG ? (Long_format) : (Min_format))) |
576 | |
577 | #define FMT_BYTES_ALLOCATED 9 |
578 | size_spec = integral_type_size[size]; |
579 | |
580 | { |
581 | static const char doux[] ALIGN1 = "doux"; |
582 | static const char doux_fmt_letter[][4] = { |
583 | "lld", "llo", "llu", "llx" |
584 | }; |
585 | static const enum output_format doux_fmt[] = { |
586 | SIGNED_DECIMAL, |
587 | OCTAL, |
588 | UNSIGNED_DECIMAL, |
589 | HEXADECIMAL, |
590 | }; |
591 | static const uint8_t *const doux_bytes_to_XXX[] = { |
592 | bytes_to_signed_dec_digits, |
593 | bytes_to_oct_digits, |
594 | bytes_to_unsigned_dec_digits, |
595 | bytes_to_hex_digits, |
596 | }; |
597 | static const char doux_fmtstring[][sizeof(" %%0%u%s")] = { |
598 | " %%%u%s", |
599 | " %%0%u%s", |
600 | " %%%u%s", |
601 | " %%0%u%s", |
602 | }; |
603 | |
604 | pos = strchr(doux, c) - doux; |
605 | fmt = doux_fmt[pos]; |
606 | field_width = doux_bytes_to_XXX[pos][size]; |
607 | p = doux_fmt_letter[pos] + 2; |
608 | if (size_spec == LONG) p--; |
609 | if (size_spec == LONG_LONG) p -= 2; |
610 | fmt_string = xasprintf(doux_fmtstring[pos], field_width, p); |
611 | } |
612 | |
613 | switch (size_spec) { |
614 | case CHAR: |
615 | print_function = (fmt == SIGNED_DECIMAL |
616 | ? print_s_char |
617 | : print_char); |
618 | break; |
619 | case SHORT: |
620 | print_function = (fmt == SIGNED_DECIMAL |
621 | ? print_s_short |
622 | : print_short); |
623 | break; |
624 | case INT: |
625 | print_function = print_int; |
626 | break; |
627 | case LONG: |
628 | print_function = print_long; |
629 | break; |
630 | default: /* case LONG_LONG: */ |
631 | print_function = print_long_long; |
632 | break; |
633 | } |
634 | break; |
635 | } |
636 | |
637 | case 'f': { |
638 | static const char FDL[] ALIGN1 = "FDL"; |
639 | |
640 | fmt = FLOATING_POINT; |
641 | ++s; |
642 | p = strchr(FDL, *s); |
643 | if (!p) { |
644 | size = sizeof(double); |
645 | if (isdigit(s[0])) { |
646 | size = bb_strtou(s, &end, 0); |
647 | if (errno == ERANGE || size > MAX_FP_TYPE_SIZE |
648 | || fp_type_size[size] == NO_SIZE |
649 | ) { |
650 | bb_error_msg_and_die("invalid type string '%s'; " |
651 | "%u-byte %s type is not supported", |
652 | s_orig, size, "floating point"); |
653 | } |
654 | s = end; |
655 | } |
656 | } else { |
657 | static const uint8_t FDL_sizeof[] = { |
658 | sizeof(float), |
659 | sizeof(double), |
660 | sizeof(longdouble_t), |
661 | }; |
662 | |
663 | size = FDL_sizeof[p - FDL]; |
664 | } |
665 | |
666 | size_spec = fp_type_size[size]; |
667 | |
668 | switch (size_spec) { |
669 | case FLOAT_SINGLE: |
670 | print_function = print_float; |
671 | field_width = FLT_DIG + 8; |
672 | /* Don't use %#e; not all systems support it. */ |
673 | fmt_string = xasprintf(" %%%d.%de", field_width, FLT_DIG); |
674 | break; |
675 | case FLOAT_DOUBLE: |
676 | print_function = print_double; |
677 | field_width = DBL_DIG + 8; |
678 | fmt_string = xasprintf(" %%%d.%de", field_width, DBL_DIG); |
679 | break; |
680 | default: /* case FLOAT_LONG_DOUBLE: */ |
681 | print_function = print_long_double; |
682 | field_width = LDBL_DIG + 8; |
683 | fmt_string = xasprintf(" %%%d.%dLe", field_width, LDBL_DIG); |
684 | break; |
685 | } |
686 | break; |
687 | } |
688 | |
689 | case 'a': |
690 | ++s; |
691 | fmt = NAMED_CHARACTER; |
692 | size_spec = CHAR; |
693 | print_function = print_named_ascii; |
694 | field_width = 3; |
695 | break; |
696 | case 'c': |
697 | ++s; |
698 | fmt = CHARACTER; |
699 | size_spec = CHAR; |
700 | print_function = print_ascii; |
701 | field_width = 3; |
702 | break; |
703 | default: |
704 | bb_error_msg_and_die("invalid character '%c' " |
705 | "in type string '%s'", *s, s_orig); |
706 | } |
707 | |
708 | tspec->size = size_spec; |
709 | tspec->fmt = fmt; |
710 | tspec->print_function = print_function; |
711 | tspec->fmt_string = fmt_string; |
712 | |
713 | tspec->field_width = field_width; |
714 | tspec->hexl_mode_trailer = (*s == 'z'); |
715 | if (tspec->hexl_mode_trailer) |
716 | s++; |
717 | |
718 | return s; |
719 | } |
720 | |
721 | /* Decode the modern od format string S. Append the decoded |
722 | representation to the global array SPEC, reallocating SPEC if |
723 | necessary. */ |
724 | |
725 | static void |
726 | decode_format_string(const char *s) |
727 | { |
728 | const char *s_orig = s; |
729 | |
730 | while (*s != '\0') { |
731 | struct tspec tspec; |
732 | const char *next; |
733 | |
734 | next = decode_one_format(s_orig, s, &tspec); |
735 | |
736 | assert(s != next); |
737 | s = next; |
738 | spec = xrealloc_vector(spec, 4, n_specs); |
739 | memcpy(&spec[n_specs], &tspec, sizeof(spec[0])); |
740 | n_specs++; |
741 | } |
742 | } |
743 | |
744 | /* Given a list of one or more input filenames FILE_LIST, set the global |
745 | file pointer IN_STREAM to position N_SKIP in the concatenation of |
746 | those files. If any file operation fails or if there are fewer than |
747 | N_SKIP bytes in the combined input, give an error message and return |
748 | nonzero. When possible, use seek rather than read operations to |
749 | advance IN_STREAM. */ |
750 | |
751 | static void |
752 | skip(off_t n_skip) |
753 | { |
754 | if (n_skip == 0) |
755 | return; |
756 | |
757 | while (in_stream) { /* !EOF */ |
758 | struct stat file_stats; |
759 | |
760 | /* First try seeking. For large offsets, this extra work is |
761 | worthwhile. If the offset is below some threshold it may be |
762 | more efficient to move the pointer by reading. There are two |
763 | issues when trying to seek: |
764 | - the file must be seekable. |
765 | - before seeking to the specified position, make sure |
766 | that the new position is in the current file. |
767 | Try to do that by getting file's size using fstat. |
768 | But that will work only for regular files. */ |
769 | |
770 | /* The st_size field is valid only for regular files |
771 | (and for symbolic links, which cannot occur here). |
772 | If the number of bytes left to skip is at least |
773 | as large as the size of the current file, we can |
774 | decrement n_skip and go on to the next file. */ |
775 | if (fstat(fileno(in_stream), &file_stats) == 0 |
776 | && S_ISREG(file_stats.st_mode) && file_stats.st_size > 0 |
777 | ) { |
778 | if (file_stats.st_size < n_skip) { |
779 | n_skip -= file_stats.st_size; |
780 | /* take "check & close / open_next" route */ |
781 | } else { |
782 | if (fseeko(in_stream, n_skip, SEEK_CUR) != 0) |
783 | ioerror = 1; |
784 | return; |
785 | } |
786 | } else { |
787 | /* If it's not a regular file with positive size, |
788 | position the file pointer by reading. */ |
789 | char buf[1024]; |
790 | size_t n_bytes_to_read = 1024; |
791 | size_t n_bytes_read; |
792 | |
793 | while (n_skip > 0) { |
794 | if (n_skip < n_bytes_to_read) |
795 | n_bytes_to_read = n_skip; |
796 | n_bytes_read = fread(buf, 1, n_bytes_to_read, in_stream); |
797 | n_skip -= n_bytes_read; |
798 | if (n_bytes_read != n_bytes_to_read) |
799 | break; /* EOF on this file or error */ |
800 | } |
801 | } |
802 | if (n_skip == 0) |
803 | return; |
804 | |
805 | check_and_close(); |
806 | open_next_file(); |
807 | } |
808 | |
809 | if (n_skip) |
810 | bb_error_msg_and_die("cannot skip past end of combined input"); |
811 | } |
812 | |
813 | |
814 | typedef void FN_format_address(off_t address, char c); |
815 | |
816 | static void |
817 | format_address_none(off_t address UNUSED_PARAM, char c UNUSED_PARAM) |
818 | { |
819 | } |
820 | |
821 | static char address_fmt[] ALIGN1 = "%0n"OFF_FMT"xc"; |
822 | /* Corresponds to 'x' above */ |
823 | #define address_base_char address_fmt[sizeof(address_fmt)-3] |
824 | /* Corresponds to 'n' above */ |
825 | #define address_pad_len_char address_fmt[2] |
826 | |
827 | static void |
828 | format_address_std(off_t address, char c) |
829 | { |
830 | /* Corresponds to 'c' */ |
831 | address_fmt[sizeof(address_fmt)-2] = c; |
832 | printf(address_fmt, address); |
833 | } |
834 | |
835 | #if ENABLE_GETOPT_LONG |
836 | /* only used with --traditional */ |
837 | static void |
838 | format_address_paren(off_t address, char c) |
839 | { |
840 | putchar('('); |
841 | format_address_std(address, ')'); |
842 | if (c) putchar(c); |
843 | } |
844 | |
845 | static void |
846 | format_address_label(off_t address, char c) |
847 | { |
848 | format_address_std(address, ' '); |
849 | format_address_paren(address + pseudo_offset, c); |
850 | } |
851 | #endif |
852 | |
853 | static void |
854 | dump_hexl_mode_trailer(size_t n_bytes, const char *block) |
855 | { |
856 | fputs(" >", stdout); |
857 | while (n_bytes--) { |
858 | unsigned c = *(unsigned char *) block++; |
859 | c = (ISPRINT(c) ? c : '.'); |
860 | putchar(c); |
861 | } |
862 | putchar('<'); |
863 | } |
864 | |
865 | /* Write N_BYTES bytes from CURR_BLOCK to standard output once for each |
866 | of the N_SPEC format specs. CURRENT_OFFSET is the byte address of |
867 | CURR_BLOCK in the concatenation of input files, and it is printed |
868 | (optionally) only before the output line associated with the first |
869 | format spec. When duplicate blocks are being abbreviated, the output |
870 | for a sequence of identical input blocks is the output for the first |
871 | block followed by an asterisk alone on a line. It is valid to compare |
872 | the blocks PREV_BLOCK and CURR_BLOCK only when N_BYTES == BYTES_PER_BLOCK. |
873 | That condition may be false only for the last input block -- and then |
874 | only when it has not been padded to length BYTES_PER_BLOCK. */ |
875 | |
876 | static void |
877 | write_block(off_t current_offset, size_t n_bytes, |
878 | const char *prev_block, const char *curr_block) |
879 | { |
880 | static char first = 1; |
881 | static char prev_pair_equal = 0; |
882 | size_t i; |
883 | |
884 | if (!verbose && !first |
885 | && n_bytes == bytes_per_block |
886 | && memcmp(prev_block, curr_block, bytes_per_block) == 0 |
887 | ) { |
888 | if (prev_pair_equal) { |
889 | /* The two preceding blocks were equal, and the current |
890 | block is the same as the last one, so print nothing. */ |
891 | } else { |
892 | puts("*"); |
893 | prev_pair_equal = 1; |
894 | } |
895 | } else { |
896 | first = 0; |
897 | prev_pair_equal = 0; |
898 | for (i = 0; i < n_specs; i++) { |
899 | if (i == 0) |
900 | format_address(current_offset, '\0'); |
901 | else |
902 | printf("%*s", address_pad_len_char - '0', ""); |
903 | (*spec[i].print_function) (n_bytes, curr_block, spec[i].fmt_string); |
904 | if (spec[i].hexl_mode_trailer) { |
905 | /* space-pad out to full line width, then dump the trailer */ |
906 | int datum_width = width_bytes[spec[i].size]; |
907 | int blank_fields = (bytes_per_block - n_bytes) / datum_width; |
908 | int field_width = spec[i].field_width + 1; |
909 | printf("%*s", blank_fields * field_width, ""); |
910 | dump_hexl_mode_trailer(n_bytes, curr_block); |
911 | } |
912 | putchar('\n'); |
913 | } |
914 | } |
915 | } |
916 | |
917 | static void |
918 | read_block(size_t n, char *block, size_t *n_bytes_in_buffer) |
919 | { |
920 | assert(0 < n && n <= bytes_per_block); |
921 | |
922 | *n_bytes_in_buffer = 0; |
923 | |
924 | if (n == 0) |
925 | return; |
926 | |
927 | while (in_stream != NULL) { /* EOF. */ |
928 | size_t n_needed; |
929 | size_t n_read; |
930 | |
931 | n_needed = n - *n_bytes_in_buffer; |
932 | n_read = fread(block + *n_bytes_in_buffer, 1, n_needed, in_stream); |
933 | *n_bytes_in_buffer += n_read; |
934 | if (n_read == n_needed) |
935 | break; |
936 | /* error check is done in check_and_close */ |
937 | check_and_close(); |
938 | open_next_file(); |
939 | } |
940 | } |
941 | |
942 | /* Return the least common multiple of the sizes associated |
943 | with the format specs. */ |
944 | |
945 | static int |
946 | get_lcm(void) |
947 | { |
948 | size_t i; |
949 | int l_c_m = 1; |
950 | |
951 | for (i = 0; i < n_specs; i++) |
952 | l_c_m = lcm(l_c_m, width_bytes[(int) spec[i].size]); |
953 | return l_c_m; |
954 | } |
955 | |
956 | #if ENABLE_GETOPT_LONG |
957 | /* If S is a valid traditional offset specification with an optional |
958 | leading '+' return nonzero and set *OFFSET to the offset it denotes. */ |
959 | |
960 | static int |
961 | parse_old_offset(const char *s, off_t *offset) |
962 | { |
963 | static const struct suffix_mult Bb[] = { |
964 | { "B", 1024 }, |
965 | { "b", 512 }, |
966 | { } |
967 | }; |
968 | char *p; |
969 | int radix; |
970 | |
971 | /* Skip over any leading '+'. */ |
972 | if (s[0] == '+') ++s; |
973 | |
974 | /* Determine the radix we'll use to interpret S. If there is a '.', |
975 | * it's decimal, otherwise, if the string begins with '0X'or '0x', |
976 | * it's hexadecimal, else octal. */ |
977 | p = strchr(s, '.'); |
978 | radix = 8; |
979 | if (p) { |
980 | p[0] = '\0'; /* cheating */ |
981 | radix = 10; |
982 | } else if (s[0] == '0' && (s[1] == 'x' || s[1] == 'X')) |
983 | radix = 16; |
984 | |
985 | *offset = xstrtooff_sfx(s, radix, Bb); |
986 | if (p) p[0] = '.'; |
987 | |
988 | return (*offset >= 0); |
989 | } |
990 | #endif |
991 | |
992 | /* Read a chunk of size BYTES_PER_BLOCK from the input files, write the |
993 | formatted block to standard output, and repeat until the specified |
994 | maximum number of bytes has been read or until all input has been |
995 | processed. If the last block read is smaller than BYTES_PER_BLOCK |
996 | and its size is not a multiple of the size associated with a format |
997 | spec, extend the input block with zero bytes until its length is a |
998 | multiple of all format spec sizes. Write the final block. Finally, |
999 | write on a line by itself the offset of the byte after the last byte |
1000 | read. */ |
1001 | |
1002 | static void |
1003 | dump(off_t current_offset, off_t end_offset) |
1004 | { |
1005 | char *block[2]; |
1006 | int idx; |
1007 | size_t n_bytes_read; |
1008 | |
1009 | block[0] = xmalloc(2*bytes_per_block); |
1010 | block[1] = block[0] + bytes_per_block; |
1011 | |
1012 | idx = 0; |
1013 | if (limit_bytes_to_format) { |
1014 | while (1) { |
1015 | size_t n_needed; |
1016 | if (current_offset >= end_offset) { |
1017 | n_bytes_read = 0; |
1018 | break; |
1019 | } |
1020 | n_needed = MIN(end_offset - current_offset, |
1021 | (off_t) bytes_per_block); |
1022 | read_block(n_needed, block[idx], &n_bytes_read); |
1023 | if (n_bytes_read < bytes_per_block) |
1024 | break; |
1025 | assert(n_bytes_read == bytes_per_block); |
1026 | write_block(current_offset, n_bytes_read, |
1027 | block[!idx], block[idx]); |
1028 | current_offset += n_bytes_read; |
1029 | idx = !idx; |
1030 | } |
1031 | } else { |
1032 | while (1) { |
1033 | read_block(bytes_per_block, block[idx], &n_bytes_read); |
1034 | if (n_bytes_read < bytes_per_block) |
1035 | break; |
1036 | assert(n_bytes_read == bytes_per_block); |
1037 | write_block(current_offset, n_bytes_read, |
1038 | block[!idx], block[idx]); |
1039 | current_offset += n_bytes_read; |
1040 | idx = !idx; |
1041 | } |
1042 | } |
1043 | |
1044 | if (n_bytes_read > 0) { |
1045 | int l_c_m; |
1046 | size_t bytes_to_write; |
1047 | |
1048 | l_c_m = get_lcm(); |
1049 | |
1050 | /* Make bytes_to_write the smallest multiple of l_c_m that |
1051 | is at least as large as n_bytes_read. */ |
1052 | bytes_to_write = l_c_m * ((n_bytes_read + l_c_m - 1) / l_c_m); |
1053 | |
1054 | memset(block[idx] + n_bytes_read, 0, bytes_to_write - n_bytes_read); |
1055 | write_block(current_offset, bytes_to_write, |
1056 | block[!idx], block[idx]); |
1057 | current_offset += n_bytes_read; |
1058 | } |
1059 | |
1060 | format_address(current_offset, '\n'); |
1061 | |
1062 | if (limit_bytes_to_format && current_offset >= end_offset) |
1063 | check_and_close(); |
1064 | |
1065 | free(block[0]); |
1066 | } |
1067 | |
1068 | /* Read a single byte into *C from the concatenation of the input files |
1069 | named in the global array FILE_LIST. On the first call to this |
1070 | function, the global variable IN_STREAM is expected to be an open |
1071 | stream associated with the input file INPUT_FILENAME. If IN_STREAM |
1072 | is at end-of-file, close it and update the global variables IN_STREAM |
1073 | and INPUT_FILENAME so they correspond to the next file in the list. |
1074 | Then try to read a byte from the newly opened file. Repeat if |
1075 | necessary until EOF is reached for the last file in FILE_LIST, then |
1076 | set *C to EOF and return. Subsequent calls do likewise. */ |
1077 | |
1078 | static void |
1079 | read_char(int *c) |
1080 | { |
1081 | while (in_stream) { /* !EOF */ |
1082 | *c = fgetc(in_stream); |
1083 | if (*c != EOF) |
1084 | return; |
1085 | check_and_close(); |
1086 | open_next_file(); |
1087 | } |
1088 | *c = EOF; |
1089 | } |
1090 | |
1091 | /* Read N bytes into BLOCK from the concatenation of the input files |
1092 | named in the global array FILE_LIST. On the first call to this |
1093 | function, the global variable IN_STREAM is expected to be an open |
1094 | stream associated with the input file INPUT_FILENAME. If all N |
1095 | bytes cannot be read from IN_STREAM, close IN_STREAM and update |
1096 | the global variables IN_STREAM and INPUT_FILENAME. Then try to |
1097 | read the remaining bytes from the newly opened file. Repeat if |
1098 | necessary until EOF is reached for the last file in FILE_LIST. |
1099 | On subsequent calls, don't modify BLOCK and return zero. Set |
1100 | *N_BYTES_IN_BUFFER to the number of bytes read. If an error occurs, |
1101 | it will be detected through ferror when the stream is about to be |
1102 | closed. If there is an error, give a message but continue reading |
1103 | as usual and return nonzero. Otherwise return zero. */ |
1104 | |
1105 | /* STRINGS mode. Find each "string constant" in the input. |
1106 | A string constant is a run of at least 'string_min' ASCII |
1107 | graphic (or formatting) characters terminated by a null. |
1108 | Based on a function written by Richard Stallman for a |
1109 | traditional version of od. */ |
1110 | |
1111 | static void |
1112 | dump_strings(off_t address, off_t end_offset) |
1113 | { |
1114 | size_t bufsize = MAX(100, string_min); |
1115 | char *buf = xmalloc(bufsize); |
1116 | |
1117 | while (1) { |
1118 | size_t i; |
1119 | int c; |
1120 | |
1121 | /* See if the next 'string_min' chars are all printing chars. */ |
1122 | tryline: |
1123 | if (limit_bytes_to_format && (end_offset - string_min <= address)) |
1124 | break; |
1125 | i = 0; |
1126 | while (!limit_bytes_to_format || address < end_offset) { |
1127 | if (i == bufsize) { |
1128 | bufsize += bufsize/8; |
1129 | buf = xrealloc(buf, bufsize); |
1130 | } |
1131 | read_char(&c); |
1132 | if (c < 0) { /* EOF */ |
1133 | free(buf); |
1134 | return; |
1135 | } |
1136 | address++; |
1137 | if (!c) |
1138 | break; |
1139 | if (!ISPRINT(c)) |
1140 | goto tryline; /* It isn't; give up on this string. */ |
1141 | buf[i++] = c; /* String continues; store it all. */ |
1142 | } |
1143 | |
1144 | if (i < string_min) /* Too short! */ |
1145 | goto tryline; |
1146 | |
1147 | /* If we get here, the string is all printable and NUL-terminated, |
1148 | * so print it. It is all in 'buf' and 'i' is its length. */ |
1149 | buf[i] = 0; |
1150 | format_address(address - i - 1, ' '); |
1151 | |
1152 | for (i = 0; (c = buf[i]); i++) { |
1153 | switch (c) { |
1154 | case '\007': fputs("\\a", stdout); break; |
1155 | case '\b': fputs("\\b", stdout); break; |
1156 | case '\f': fputs("\\f", stdout); break; |
1157 | case '\n': fputs("\\n", stdout); break; |
1158 | case '\r': fputs("\\r", stdout); break; |
1159 | case '\t': fputs("\\t", stdout); break; |
1160 | case '\v': fputs("\\v", stdout); break; |
1161 | default: putchar(c); |
1162 | } |
1163 | } |
1164 | putchar('\n'); |
1165 | } |
1166 | |
1167 | /* We reach this point only if we search through |
1168 | (max_bytes_to_format - string_min) bytes before reaching EOF. */ |
1169 | free(buf); |
1170 | |
1171 | check_and_close(); |
1172 | } |
1173 | |
1174 | int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
1175 | int od_main(int argc, char **argv) |
1176 | { |
1177 | static const struct suffix_mult bkm[] = { |
1178 | { "b", 512 }, |
1179 | { "k", 1024 }, |
1180 | { "m", 1024*1024 }, |
1181 | { } |
1182 | }; |
1183 | enum { |
1184 | OPT_A = 1 << 0, |
1185 | OPT_N = 1 << 1, |
1186 | OPT_a = 1 << 2, |
1187 | OPT_b = 1 << 3, |
1188 | OPT_c = 1 << 4, |
1189 | OPT_d = 1 << 5, |
1190 | OPT_f = 1 << 6, |
1191 | OPT_h = 1 << 7, |
1192 | OPT_i = 1 << 8, |
1193 | OPT_j = 1 << 9, |
1194 | OPT_l = 1 << 10, |
1195 | OPT_o = 1 << 11, |
1196 | OPT_t = 1 << 12, |
1197 | OPT_v = 1 << 13, |
1198 | OPT_x = 1 << 14, |
1199 | OPT_s = 1 << 15, |
1200 | OPT_S = 1 << 16, |
1201 | OPT_w = 1 << 17, |
1202 | OPT_traditional = (1 << 18) * ENABLE_GETOPT_LONG, |
1203 | }; |
1204 | #if ENABLE_GETOPT_LONG |
1205 | static const char od_longopts[] ALIGN1 = |
1206 | "skip-bytes\0" Required_argument "j" |
1207 | "address-radix\0" Required_argument "A" |
1208 | "read-bytes\0" Required_argument "N" |
1209 | "format\0" Required_argument "t" |
1210 | "output-duplicates\0" No_argument "v" |
1211 | "strings\0" Optional_argument "S" |
1212 | "width\0" Optional_argument "w" |
1213 | "traditional\0" No_argument "\xff" |
1214 | ; |
1215 | #endif |
1216 | char *str_A, *str_N, *str_j, *str_S; |
1217 | llist_t *lst_t = NULL; |
1218 | unsigned opt; |
1219 | int l_c_m; |
1220 | /* The old-style 'pseudo starting address' to be printed in parentheses |
1221 | after any true address. */ |
1222 | off_t pseudo_start = pseudo_start; // for gcc |
1223 | /* The number of input bytes to skip before formatting and writing. */ |
1224 | off_t n_bytes_to_skip = 0; |
1225 | /* The offset of the first byte after the last byte to be formatted. */ |
1226 | off_t end_offset = 0; |
1227 | /* The maximum number of bytes that will be formatted. */ |
1228 | off_t max_bytes_to_format = 0; |
1229 | |
1230 | spec = NULL; |
1231 | format_address = format_address_std; |
1232 | address_base_char = 'o'; |
1233 | address_pad_len_char = '7'; |
1234 | /* flag_dump_strings = 0; - already is */ |
1235 | |
1236 | /* Parse command line */ |
1237 | opt_complementary = "w+:t::"; /* -w N, -t is a list */ |
1238 | #if ENABLE_GETOPT_LONG |
1239 | applet_long_options = od_longopts; |
1240 | #endif |
1241 | opt = getopt32(argv, "A:N:abcdfhij:lot:vxsS:" |
1242 | "w::", // -w with optional param |
1243 | // -S was -s and also had optional parameter |
1244 | // but in coreutils 6.3 it was renamed and now has |
1245 | // _mandatory_ parameter |
1246 | &str_A, &str_N, &str_j, &lst_t, &str_S, &bytes_per_block); |
1247 | argc -= optind; |
1248 | argv += optind; |
1249 | if (opt & OPT_A) { |
1250 | static const char doxn[] ALIGN1 = "doxn"; |
1251 | static const char doxn_address_base_char[] ALIGN1 = { |
1252 | 'u', 'o', 'x', /* '?' fourth one is not important */ |
1253 | }; |
1254 | static const uint8_t doxn_address_pad_len_char[] ALIGN1 = { |
1255 | '7', '7', '6', /* '?' */ |
1256 | }; |
1257 | char *p; |
1258 | int pos; |
1259 | p = strchr(doxn, str_A[0]); |
1260 | if (!p) |
1261 | bb_error_msg_and_die("bad output address radix " |
1262 | "'%c' (must be [doxn])", str_A[0]); |
1263 | pos = p - doxn; |
1264 | if (pos == 3) format_address = format_address_none; |
1265 | address_base_char = doxn_address_base_char[pos]; |
1266 | address_pad_len_char = doxn_address_pad_len_char[pos]; |
1267 | } |
1268 | if (opt & OPT_N) { |
1269 | limit_bytes_to_format = 1; |
1270 | max_bytes_to_format = xstrtooff_sfx(str_N, 0, bkm); |
1271 | } |
1272 | if (opt & OPT_a) decode_format_string("a"); |
1273 | if (opt & OPT_b) decode_format_string("oC"); |
1274 | if (opt & OPT_c) decode_format_string("c"); |
1275 | if (opt & OPT_d) decode_format_string("u2"); |
1276 | if (opt & OPT_f) decode_format_string("fF"); |
1277 | if (opt & OPT_h) decode_format_string("x2"); |
1278 | if (opt & OPT_i) decode_format_string("d2"); |
1279 | if (opt & OPT_j) n_bytes_to_skip = xstrtooff_sfx(str_j, 0, bkm); |
1280 | if (opt & OPT_l) decode_format_string("d4"); |
1281 | if (opt & OPT_o) decode_format_string("o2"); |
1282 | //if (opt & OPT_t)... |
1283 | while (lst_t) { |
1284 | decode_format_string(llist_pop(&lst_t)); |
1285 | } |
1286 | if (opt & OPT_v) verbose = 1; |
1287 | if (opt & OPT_x) decode_format_string("x2"); |
1288 | if (opt & OPT_s) decode_format_string("d2"); |
1289 | if (opt & OPT_S) { |
1290 | string_min = 3; |
1291 | string_min = xstrtou_sfx(str_S, 0, bkm); |
1292 | flag_dump_strings = 1; |
1293 | } |
1294 | //if (opt & OPT_w)... |
1295 | //if (opt & OPT_traditional)... |
1296 | |
1297 | if (flag_dump_strings && n_specs > 0) |
1298 | bb_error_msg_and_die("no type may be specified when dumping strings"); |
1299 | |
1300 | /* If the --traditional option is used, there may be from |
1301 | * 0 to 3 remaining command line arguments; handle each case |
1302 | * separately. |
1303 | * od [file] [[+]offset[.][b] [[+]label[.][b]]] |
1304 | * The offset and pseudo_start have the same syntax. |
1305 | * |
1306 | * FIXME: POSIX 1003.1-2001 with XSI requires support for the |
1307 | * traditional syntax even if --traditional is not given. */ |
1308 | |
1309 | #if ENABLE_GETOPT_LONG |
1310 | if (opt & OPT_traditional) { |
1311 | off_t o1, o2; |
1312 | |
1313 | if (argc == 1) { |
1314 | if (parse_old_offset(argv[0], &o1)) { |
1315 | n_bytes_to_skip = o1; |
1316 | --argc; |
1317 | ++argv; |
1318 | } |
1319 | } else if (argc == 2) { |
1320 | if (parse_old_offset(argv[0], &o1) |
1321 | && parse_old_offset(argv[1], &o2) |
1322 | ) { |
1323 | n_bytes_to_skip = o1; |
1324 | flag_pseudo_start = 1; |
1325 | pseudo_start = o2; |
1326 | argv += 2; |
1327 | argc -= 2; |
1328 | } else if (parse_old_offset(argv[1], &o2)) { |
1329 | n_bytes_to_skip = o2; |
1330 | --argc; |
1331 | argv[1] = argv[0]; |
1332 | ++argv; |
1333 | } else { |
1334 | bb_error_msg_and_die("invalid second operand " |
1335 | "in compatibility mode '%s'", argv[1]); |
1336 | } |
1337 | } else if (argc == 3) { |
1338 | if (parse_old_offset(argv[1], &o1) |
1339 | && parse_old_offset(argv[2], &o2) |
1340 | ) { |
1341 | n_bytes_to_skip = o1; |
1342 | flag_pseudo_start = 1; |
1343 | pseudo_start = o2; |
1344 | argv[2] = argv[0]; |
1345 | argv += 2; |
1346 | argc -= 2; |
1347 | } else { |
1348 | bb_error_msg_and_die("in compatibility mode " |
1349 | "the last two arguments must be offsets"); |
1350 | } |
1351 | } else if (argc > 3) { |
1352 | bb_error_msg_and_die("compatibility mode supports " |
1353 | "at most three arguments"); |
1354 | } |
1355 | |
1356 | if (flag_pseudo_start) { |
1357 | if (format_address == format_address_none) { |
1358 | address_base_char = 'o'; |
1359 | address_pad_len_char = '7'; |
1360 | format_address = format_address_paren; |
1361 | } else |
1362 | format_address = format_address_label; |
1363 | } |
1364 | } |
1365 | #endif |
1366 | |
1367 | if (limit_bytes_to_format) { |
1368 | end_offset = n_bytes_to_skip + max_bytes_to_format; |
1369 | if (end_offset < n_bytes_to_skip) |
1370 | bb_error_msg_and_die("skip-bytes + read-bytes is too large"); |
1371 | } |
1372 | |
1373 | if (n_specs == 0) { |
1374 | decode_format_string("o2"); |
1375 | n_specs = 1; |
1376 | } |
1377 | |
1378 | /* If no files were listed on the command line, |
1379 | set the global pointer FILE_LIST so that it |
1380 | references the null-terminated list of one name: "-". */ |
1381 | file_list = bb_argv_dash; |
1382 | if (argc > 0) { |
1383 | /* Set the global pointer FILE_LIST so that it |
1384 | references the first file-argument on the command-line. */ |
1385 | file_list = (char const *const *) argv; |
1386 | } |
1387 | |
1388 | /* open the first input file */ |
1389 | open_next_file(); |
1390 | /* skip over any unwanted header bytes */ |
1391 | skip(n_bytes_to_skip); |
1392 | if (!in_stream) |
1393 | return EXIT_FAILURE; |
1394 | |
1395 | pseudo_offset = (flag_pseudo_start ? pseudo_start - n_bytes_to_skip : 0); |
1396 | |
1397 | /* Compute output block length. */ |
1398 | l_c_m = get_lcm(); |
1399 | |
1400 | if (opt & OPT_w) { /* -w: width */ |
1401 | if (!bytes_per_block || bytes_per_block % l_c_m != 0) { |
1402 | bb_error_msg("warning: invalid width %u; using %d instead", |
1403 | (unsigned)bytes_per_block, l_c_m); |
1404 | bytes_per_block = l_c_m; |
1405 | } |
1406 | } else { |
1407 | bytes_per_block = l_c_m; |
1408 | if (l_c_m < DEFAULT_BYTES_PER_BLOCK) |
1409 | bytes_per_block *= DEFAULT_BYTES_PER_BLOCK / l_c_m; |
1410 | } |
1411 | |
1412 | #ifdef DEBUG |
1413 | for (i = 0; i < n_specs; i++) { |
1414 | printf("%d: fmt=\"%s\" width=%d\n", |
1415 | i, spec[i].fmt_string, width_bytes[spec[i].size]); |
1416 | } |
1417 | #endif |
1418 | |
1419 | if (flag_dump_strings) |
1420 | dump_strings(n_bytes_to_skip, end_offset); |
1421 | else |
1422 | dump(n_bytes_to_skip, end_offset); |
1423 | |
1424 | if (fclose(stdin) == EOF) |
1425 | bb_perror_msg_and_die(bb_msg_standard_input); |
1426 | |
1427 | return ioerror; |
1428 | } |