Commit | Line | Data |
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252b5132 | 1 | /* strings -- print the strings of printable characters in files |
8b53311e | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
e9f87780 | 3 | 2002, 2003, 2004 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2, or (at your option) | |
8 | any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
18 | 02111-1307, USA. */ | |
19 | \f | |
20 | /* Usage: strings [options] file... | |
21 | ||
22 | Options: | |
23 | --all | |
24 | -a | |
25 | - Do not scan only the initialized data section of object files. | |
26 | ||
27 | --print-file-name | |
28 | -f Print the name of the file before each string. | |
29 | ||
30 | --bytes=min-len | |
31 | -n min-len | |
32 | -min-len Print graphic char sequences, MIN-LEN or more bytes long, | |
33 | that are followed by a NUL or a newline. Default is 4. | |
34 | ||
35 | --radix={o,x,d} | |
36 | -t {o,x,d} Print the offset within the file before each string, | |
37 | in octal/hex/decimal. | |
38 | ||
39 | -o Like -to. (Some other implementations have -o like -to, | |
40 | others like -td. We chose one arbitrarily.) | |
41 | ||
8745eafa NC |
42 | --encoding={s,S,b,l,B,L} |
43 | -e {s,S,b,l,B,L} | |
44 | Select character encoding: 7-bit-character, 8-bit-character, | |
45 | bigendian 16-bit, littleendian 16-bit, bigendian 32-bit, | |
46 | littleendian 32-bit. | |
d132876a | 47 | |
252b5132 RH |
48 | --target=BFDNAME |
49 | Specify a non-default object file format. | |
50 | ||
51 | --help | |
52 | -h Print the usage message on the standard output. | |
53 | ||
54 | --version | |
55 | -v Print the program version number. | |
56 | ||
57 | Written by Richard Stallman <rms@gnu.ai.mit.edu> | |
58 | and David MacKenzie <djm@gnu.ai.mit.edu>. */ | |
59 | ||
cedd9a58 JJ |
60 | #ifdef HAVE_CONFIG_H |
61 | #include "config.h" | |
62 | #endif | |
252b5132 RH |
63 | #include "bfd.h" |
64 | #include <stdio.h> | |
e9792343 | 65 | #include "getopt.h" |
252b5132 RH |
66 | #include <errno.h> |
67 | #include "bucomm.h" | |
68 | #include "libiberty.h" | |
3882b010 | 69 | #include "safe-ctype.h" |
252b5132 | 70 | |
5af11cab AM |
71 | /* Some platforms need to put stdin into binary mode, to read |
72 | binary files. */ | |
73 | #ifdef HAVE_SETMODE | |
74 | #ifndef O_BINARY | |
75 | #ifdef _O_BINARY | |
76 | #define O_BINARY _O_BINARY | |
77 | #define setmode _setmode | |
78 | #else | |
79 | #define O_BINARY 0 | |
80 | #endif | |
81 | #endif | |
82 | #if O_BINARY | |
83 | #include <io.h> | |
8745eafa | 84 | #define SET_BINARY(f) do { if (!isatty (f)) setmode (f,O_BINARY); } while (0) |
5af11cab AM |
85 | #endif |
86 | #endif | |
87 | ||
8745eafa NC |
88 | #define STRING_ISGRAPHIC(c) \ |
89 | ( (c) >= 0 \ | |
90 | && (c) <= 255 \ | |
91 | && ((c) == '\t' || ISPRINT (c) || (encoding == 'S' && (c) > 127))) | |
252b5132 RH |
92 | |
93 | #ifndef errno | |
94 | extern int errno; | |
95 | #endif | |
96 | ||
97 | /* The BFD section flags that identify an initialized data section. */ | |
98 | #define DATA_FLAGS (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS) | |
99 | ||
cedd9a58 JJ |
100 | #ifdef HAVE_FOPEN64 |
101 | typedef off64_t file_off; | |
8745eafa | 102 | #define file_open(s,m) fopen64(s, m) |
cedd9a58 JJ |
103 | #else |
104 | typedef off_t file_off; | |
8745eafa | 105 | #define file_open(s,m) fopen(s, m) |
cedd9a58 | 106 | #endif |
fb5b5478 JJ |
107 | #ifdef HAVE_STAT64 |
108 | typedef struct stat64 statbuf; | |
109 | #define file_stat(f,s) stat64(f, s) | |
110 | #else | |
111 | typedef struct stat statbuf; | |
112 | #define file_stat(f,s) stat(f, s) | |
113 | #endif | |
cedd9a58 | 114 | |
252b5132 RH |
115 | /* Radix for printing addresses (must be 8, 10 or 16). */ |
116 | static int address_radix; | |
117 | ||
118 | /* Minimum length of sequence of graphic chars to trigger output. */ | |
119 | static int string_min; | |
120 | ||
b34976b6 AM |
121 | /* TRUE means print address within file for each string. */ |
122 | static bfd_boolean print_addresses; | |
252b5132 | 123 | |
b34976b6 AM |
124 | /* TRUE means print filename for each string. */ |
125 | static bfd_boolean print_filenames; | |
252b5132 | 126 | |
b34976b6 AM |
127 | /* TRUE means for object files scan only the data section. */ |
128 | static bfd_boolean datasection_only; | |
252b5132 | 129 | |
b34976b6 AM |
130 | /* TRUE if we found an initialized data section in the current file. */ |
131 | static bfd_boolean got_a_section; | |
252b5132 RH |
132 | |
133 | /* The BFD object file format. */ | |
134 | static char *target; | |
135 | ||
d132876a NC |
136 | /* The character encoding format. */ |
137 | static char encoding; | |
138 | static int encoding_bytes; | |
139 | ||
252b5132 RH |
140 | static struct option long_options[] = |
141 | { | |
142 | {"all", no_argument, NULL, 'a'}, | |
143 | {"print-file-name", no_argument, NULL, 'f'}, | |
144 | {"bytes", required_argument, NULL, 'n'}, | |
145 | {"radix", required_argument, NULL, 't'}, | |
d132876a | 146 | {"encoding", required_argument, NULL, 'e'}, |
252b5132 RH |
147 | {"target", required_argument, NULL, 'T'}, |
148 | {"help", no_argument, NULL, 'h'}, | |
149 | {"version", no_argument, NULL, 'v'}, | |
150 | {NULL, 0, NULL, 0} | |
151 | }; | |
152 | ||
2da42df6 AJ |
153 | static void strings_a_section (bfd *, asection *, void *); |
154 | static bfd_boolean strings_object_file (const char *); | |
155 | static bfd_boolean strings_file (char *file); | |
156 | static int integer_arg (char *s); | |
157 | static void print_strings (const char *, FILE *, file_off, int, int, char *); | |
158 | static void usage (FILE *, int); | |
159 | static long get_char (FILE *, file_off *, int *, char **); | |
252b5132 | 160 | \f |
2da42df6 | 161 | int main (int, char **); |
65de42c0 | 162 | |
252b5132 | 163 | int |
2da42df6 | 164 | main (int argc, char **argv) |
252b5132 RH |
165 | { |
166 | int optc; | |
167 | int exit_status = 0; | |
b34976b6 | 168 | bfd_boolean files_given = FALSE; |
252b5132 | 169 | |
3882b010 | 170 | #if defined (HAVE_SETLOCALE) |
1c529ca6 | 171 | setlocale (LC_ALL, ""); |
252b5132 RH |
172 | #endif |
173 | bindtextdomain (PACKAGE, LOCALEDIR); | |
174 | textdomain (PACKAGE); | |
175 | ||
176 | program_name = argv[0]; | |
177 | xmalloc_set_program_name (program_name); | |
178 | string_min = -1; | |
b34976b6 AM |
179 | print_addresses = FALSE; |
180 | print_filenames = FALSE; | |
181 | datasection_only = TRUE; | |
252b5132 | 182 | target = NULL; |
d132876a | 183 | encoding = 's'; |
252b5132 | 184 | |
8b53311e | 185 | while ((optc = getopt_long (argc, argv, "afhHn:ot:e:Vv0123456789", |
252b5132 RH |
186 | long_options, (int *) 0)) != EOF) |
187 | { | |
188 | switch (optc) | |
189 | { | |
190 | case 'a': | |
b34976b6 | 191 | datasection_only = FALSE; |
252b5132 RH |
192 | break; |
193 | ||
194 | case 'f': | |
b34976b6 | 195 | print_filenames = TRUE; |
252b5132 RH |
196 | break; |
197 | ||
8b53311e | 198 | case 'H': |
252b5132 RH |
199 | case 'h': |
200 | usage (stdout, 0); | |
201 | ||
202 | case 'n': | |
203 | string_min = integer_arg (optarg); | |
204 | if (string_min < 1) | |
8745eafa | 205 | fatal (_("invalid number %s"), optarg); |
252b5132 RH |
206 | break; |
207 | ||
208 | case 'o': | |
b34976b6 | 209 | print_addresses = TRUE; |
252b5132 RH |
210 | address_radix = 8; |
211 | break; | |
212 | ||
213 | case 't': | |
b34976b6 | 214 | print_addresses = TRUE; |
252b5132 RH |
215 | if (optarg[1] != '\0') |
216 | usage (stderr, 1); | |
217 | switch (optarg[0]) | |
218 | { | |
219 | case 'o': | |
220 | address_radix = 8; | |
221 | break; | |
222 | ||
223 | case 'd': | |
224 | address_radix = 10; | |
225 | break; | |
226 | ||
227 | case 'x': | |
228 | address_radix = 16; | |
229 | break; | |
230 | ||
231 | default: | |
232 | usage (stderr, 1); | |
233 | } | |
234 | break; | |
235 | ||
236 | case 'T': | |
237 | target = optarg; | |
238 | break; | |
239 | ||
d132876a NC |
240 | case 'e': |
241 | if (optarg[1] != '\0') | |
242 | usage (stderr, 1); | |
243 | encoding = optarg[0]; | |
244 | break; | |
245 | ||
8b53311e | 246 | case 'V': |
252b5132 RH |
247 | case 'v': |
248 | print_version ("strings"); | |
249 | break; | |
250 | ||
251 | case '?': | |
252 | usage (stderr, 1); | |
253 | ||
254 | default: | |
255 | if (string_min < 0) | |
221f77a9 | 256 | string_min = optc - '0'; |
252b5132 RH |
257 | else |
258 | string_min = string_min * 10 + optc - '0'; | |
259 | break; | |
260 | } | |
261 | } | |
262 | ||
263 | if (string_min < 0) | |
264 | string_min = 4; | |
265 | ||
d132876a NC |
266 | switch (encoding) |
267 | { | |
8745eafa | 268 | case 'S': |
d132876a NC |
269 | case 's': |
270 | encoding_bytes = 1; | |
271 | break; | |
272 | case 'b': | |
273 | case 'l': | |
274 | encoding_bytes = 2; | |
275 | break; | |
276 | case 'B': | |
277 | case 'L': | |
278 | encoding_bytes = 4; | |
279 | break; | |
280 | default: | |
281 | usage (stderr, 1); | |
282 | } | |
283 | ||
252b5132 RH |
284 | bfd_init (); |
285 | set_default_bfd_target (); | |
286 | ||
287 | if (optind >= argc) | |
288 | { | |
b34976b6 | 289 | datasection_only = FALSE; |
5af11cab AM |
290 | #ifdef SET_BINARY |
291 | SET_BINARY (fileno (stdin)); | |
292 | #endif | |
252b5132 | 293 | print_strings ("{standard input}", stdin, 0, 0, 0, (char *) NULL); |
b34976b6 | 294 | files_given = TRUE; |
252b5132 RH |
295 | } |
296 | else | |
297 | { | |
298 | for (; optind < argc; ++optind) | |
299 | { | |
300 | if (strcmp (argv[optind], "-") == 0) | |
b34976b6 | 301 | datasection_only = FALSE; |
252b5132 RH |
302 | else |
303 | { | |
b34976b6 AM |
304 | files_given = TRUE; |
305 | exit_status |= strings_file (argv[optind]) == FALSE; | |
252b5132 RH |
306 | } |
307 | } | |
308 | } | |
309 | ||
b34976b6 | 310 | if (!files_given) |
252b5132 RH |
311 | usage (stderr, 1); |
312 | ||
313 | return (exit_status); | |
314 | } | |
315 | \f | |
316 | /* Scan section SECT of the file ABFD, whose printable name is FILE. | |
317 | If it contains initialized data, | |
318 | set `got_a_section' and print the strings in it. */ | |
319 | ||
320 | static void | |
2da42df6 | 321 | strings_a_section (bfd *abfd, asection *sect, void *filearg) |
252b5132 RH |
322 | { |
323 | const char *file = (const char *) filearg; | |
324 | ||
325 | if ((sect->flags & DATA_FLAGS) == DATA_FLAGS) | |
326 | { | |
135dfb4a | 327 | bfd_size_type sz = bfd_get_section_size (sect); |
2da42df6 | 328 | void *mem = xmalloc (sz); |
8745eafa | 329 | |
252b5132 RH |
330 | if (bfd_get_section_contents (abfd, sect, mem, (file_ptr) 0, sz)) |
331 | { | |
b34976b6 | 332 | got_a_section = TRUE; |
252b5132 RH |
333 | print_strings (file, (FILE *) NULL, sect->filepos, 0, sz, mem); |
334 | } | |
335 | free (mem); | |
336 | } | |
337 | } | |
338 | ||
339 | /* Scan all of the sections in FILE, and print the strings | |
340 | in the initialized data section(s). | |
341 | ||
b34976b6 AM |
342 | Return TRUE if successful, |
343 | FALSE if not (such as if FILE is not an object file). */ | |
252b5132 | 344 | |
b34976b6 | 345 | static bfd_boolean |
2da42df6 | 346 | strings_object_file (const char *file) |
252b5132 RH |
347 | { |
348 | bfd *abfd = bfd_openr (file, target); | |
349 | ||
350 | if (abfd == NULL) | |
8745eafa NC |
351 | /* Treat the file as a non-object file. */ |
352 | return FALSE; | |
252b5132 RH |
353 | |
354 | /* This call is mainly for its side effect of reading in the sections. | |
355 | We follow the traditional behavior of `strings' in that we don't | |
356 | complain if we don't recognize a file to be an object file. */ | |
b34976b6 | 357 | if (!bfd_check_format (abfd, bfd_object)) |
252b5132 RH |
358 | { |
359 | bfd_close (abfd); | |
b34976b6 | 360 | return FALSE; |
252b5132 RH |
361 | } |
362 | ||
b34976b6 | 363 | got_a_section = FALSE; |
2da42df6 | 364 | bfd_map_over_sections (abfd, strings_a_section, (void *) file); |
252b5132 RH |
365 | |
366 | if (!bfd_close (abfd)) | |
367 | { | |
368 | bfd_nonfatal (file); | |
b34976b6 | 369 | return FALSE; |
252b5132 RH |
370 | } |
371 | ||
372 | return got_a_section; | |
373 | } | |
374 | ||
b34976b6 | 375 | /* Print the strings in FILE. Return TRUE if ok, FALSE if an error occurs. */ |
252b5132 | 376 | |
b34976b6 | 377 | static bfd_boolean |
2da42df6 | 378 | strings_file (char *file) |
252b5132 | 379 | { |
fb5b5478 JJ |
380 | statbuf st; |
381 | ||
382 | if (file_stat (file, &st) < 0) | |
383 | { | |
384 | if (errno == ENOENT) | |
385 | non_fatal (_("'%s': No such file"), file); | |
386 | else | |
387 | non_fatal (_("Warning: could not locate '%s'. reason: %s"), | |
388 | file, strerror (errno)); | |
389 | return FALSE; | |
390 | } | |
f24ddbdd | 391 | |
252b5132 RH |
392 | /* If we weren't told to scan the whole file, |
393 | try to open it as an object file and only look at | |
394 | initialized data sections. If that fails, fall back to the | |
395 | whole file. */ | |
396 | if (!datasection_only || !strings_object_file (file)) | |
397 | { | |
398 | FILE *stream; | |
399 | ||
cedd9a58 | 400 | stream = file_open (file, FOPEN_RB); |
252b5132 RH |
401 | if (stream == NULL) |
402 | { | |
403 | fprintf (stderr, "%s: ", program_name); | |
404 | perror (file); | |
b34976b6 | 405 | return FALSE; |
252b5132 RH |
406 | } |
407 | ||
cedd9a58 | 408 | print_strings (file, stream, (file_off) 0, 0, 0, (char *) 0); |
252b5132 RH |
409 | |
410 | if (fclose (stream) == EOF) | |
411 | { | |
412 | fprintf (stderr, "%s: ", program_name); | |
413 | perror (file); | |
b34976b6 | 414 | return FALSE; |
252b5132 RH |
415 | } |
416 | } | |
417 | ||
b34976b6 | 418 | return TRUE; |
252b5132 RH |
419 | } |
420 | \f | |
d132876a NC |
421 | /* Read the next character, return EOF if none available. |
422 | Assume that STREAM is positioned so that the next byte read | |
423 | is at address ADDRESS in the file. | |
424 | ||
425 | If STREAM is NULL, do not read from it. | |
426 | The caller can supply a buffer of characters | |
427 | to be processed before the data in STREAM. | |
428 | MAGIC is the address of the buffer and | |
429 | MAGICCOUNT is how many characters are in it. */ | |
430 | ||
431 | static long | |
2da42df6 | 432 | get_char (FILE *stream, file_off *address, int *magiccount, char **magic) |
d132876a NC |
433 | { |
434 | int c, i; | |
956cd1d6 | 435 | long r = EOF; |
d132876a NC |
436 | unsigned char buf[4]; |
437 | ||
438 | for (i = 0; i < encoding_bytes; i++) | |
439 | { | |
440 | if (*magiccount) | |
441 | { | |
442 | (*magiccount)--; | |
443 | c = *(*magic)++; | |
444 | } | |
445 | else | |
446 | { | |
447 | if (stream == NULL) | |
448 | return EOF; | |
cedd9a58 JJ |
449 | #ifdef HAVE_GETC_UNLOCKED |
450 | c = getc_unlocked (stream); | |
451 | #else | |
d132876a | 452 | c = getc (stream); |
cedd9a58 | 453 | #endif |
d132876a NC |
454 | if (c == EOF) |
455 | return EOF; | |
456 | } | |
457 | ||
458 | (*address)++; | |
459 | buf[i] = c; | |
460 | } | |
461 | ||
462 | switch (encoding) | |
463 | { | |
8745eafa | 464 | case 'S': |
d132876a NC |
465 | case 's': |
466 | r = buf[0]; | |
467 | break; | |
468 | case 'b': | |
469 | r = (buf[0] << 8) | buf[1]; | |
470 | break; | |
471 | case 'l': | |
472 | r = buf[0] | (buf[1] << 8); | |
473 | break; | |
474 | case 'B': | |
475 | r = ((long) buf[0] << 24) | ((long) buf[1] << 16) | | |
476 | ((long) buf[2] << 8) | buf[3]; | |
477 | break; | |
478 | case 'L': | |
479 | r = buf[0] | ((long) buf[1] << 8) | ((long) buf[2] << 16) | | |
480 | ((long) buf[3] << 24); | |
481 | break; | |
482 | } | |
483 | ||
484 | if (r == EOF) | |
485 | return 0; | |
486 | ||
487 | return r; | |
488 | } | |
489 | \f | |
252b5132 RH |
490 | /* Find the strings in file FILENAME, read from STREAM. |
491 | Assume that STREAM is positioned so that the next byte read | |
492 | is at address ADDRESS in the file. | |
493 | Stop reading at address STOP_POINT in the file, if nonzero. | |
494 | ||
495 | If STREAM is NULL, do not read from it. | |
496 | The caller can supply a buffer of characters | |
497 | to be processed before the data in STREAM. | |
498 | MAGIC is the address of the buffer and | |
499 | MAGICCOUNT is how many characters are in it. | |
500 | Those characters come at address ADDRESS and the data in STREAM follow. */ | |
501 | ||
502 | static void | |
2da42df6 AJ |
503 | print_strings (const char *filename, FILE *stream, file_off address, |
504 | int stop_point, int magiccount, char *magic) | |
252b5132 | 505 | { |
d132876a | 506 | char *buf = (char *) xmalloc (sizeof (char) * (string_min + 1)); |
252b5132 RH |
507 | |
508 | while (1) | |
509 | { | |
cedd9a58 | 510 | file_off start; |
252b5132 | 511 | int i; |
d132876a | 512 | long c; |
252b5132 RH |
513 | |
514 | /* See if the next `string_min' chars are all graphic chars. */ | |
515 | tryline: | |
516 | if (stop_point && address >= stop_point) | |
517 | break; | |
518 | start = address; | |
519 | for (i = 0; i < string_min; i++) | |
520 | { | |
d132876a NC |
521 | c = get_char (stream, &address, &magiccount, &magic); |
522 | if (c == EOF) | |
523 | return; | |
8745eafa | 524 | if (! STRING_ISGRAPHIC (c)) |
252b5132 RH |
525 | /* Found a non-graphic. Try again starting with next char. */ |
526 | goto tryline; | |
527 | buf[i] = c; | |
528 | } | |
529 | ||
530 | /* We found a run of `string_min' graphic characters. Print up | |
e9f87780 | 531 | to the next non-graphic character. */ |
252b5132 RH |
532 | |
533 | if (print_filenames) | |
534 | printf ("%s: ", filename); | |
535 | if (print_addresses) | |
536 | switch (address_radix) | |
537 | { | |
538 | case 8: | |
cedd9a58 JJ |
539 | #if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2) |
540 | if (sizeof (start) > sizeof (long)) | |
541 | printf ("%7Lo ", (unsigned long long) start); | |
542 | else | |
543 | #else | |
544 | # if !BFD_HOST_64BIT_LONG | |
545 | if (start != (unsigned long) start) | |
546 | printf ("++%7lo ", (unsigned long) start); | |
547 | else | |
548 | # endif | |
549 | #endif | |
550 | printf ("%7lo ", (unsigned long) start); | |
252b5132 RH |
551 | break; |
552 | ||
553 | case 10: | |
cedd9a58 JJ |
554 | #if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2) |
555 | if (sizeof (start) > sizeof (long)) | |
556 | printf ("%7Ld ", (unsigned long long) start); | |
557 | else | |
558 | #else | |
559 | # if !BFD_HOST_64BIT_LONG | |
560 | if (start != (unsigned long) start) | |
561 | printf ("++%7ld ", (unsigned long) start); | |
562 | else | |
563 | # endif | |
564 | #endif | |
565 | printf ("%7ld ", (long) start); | |
252b5132 RH |
566 | break; |
567 | ||
568 | case 16: | |
cedd9a58 JJ |
569 | #if __STDC_VERSION__ >= 199901L || (defined(__GNUC__) && __GNUC__ >= 2) |
570 | if (sizeof (start) > sizeof (long)) | |
571 | printf ("%7Lx ", (unsigned long long) start); | |
572 | else | |
573 | #else | |
574 | # if !BFD_HOST_64BIT_LONG | |
575 | if (start != (unsigned long) start) | |
e9f87780 AM |
576 | printf ("%lx%8.8lx ", (unsigned long) (start >> 32), |
577 | (unsigned long) (start & 0xffffffff)); | |
cedd9a58 JJ |
578 | else |
579 | # endif | |
580 | #endif | |
581 | printf ("%7lx ", (unsigned long) start); | |
252b5132 RH |
582 | break; |
583 | } | |
584 | ||
585 | buf[i] = '\0'; | |
586 | fputs (buf, stdout); | |
587 | ||
588 | while (1) | |
589 | { | |
d132876a NC |
590 | c = get_char (stream, &address, &magiccount, &magic); |
591 | if (c == EOF) | |
592 | break; | |
8745eafa | 593 | if (! STRING_ISGRAPHIC (c)) |
252b5132 RH |
594 | break; |
595 | putchar (c); | |
596 | } | |
597 | ||
598 | putchar ('\n'); | |
599 | } | |
600 | } | |
601 | \f | |
602 | /* Parse string S as an integer, using decimal radix by default, | |
603 | but allowing octal and hex numbers as in C. */ | |
604 | ||
605 | static int | |
2da42df6 | 606 | integer_arg (char *s) |
252b5132 RH |
607 | { |
608 | int value; | |
609 | int radix = 10; | |
610 | char *p = s; | |
611 | int c; | |
612 | ||
613 | if (*p != '0') | |
614 | radix = 10; | |
615 | else if (*++p == 'x') | |
616 | { | |
617 | radix = 16; | |
618 | p++; | |
619 | } | |
620 | else | |
621 | radix = 8; | |
622 | ||
623 | value = 0; | |
624 | while (((c = *p++) >= '0' && c <= '9') | |
625 | || (radix == 16 && (c & ~40) >= 'A' && (c & ~40) <= 'Z')) | |
626 | { | |
627 | value *= radix; | |
628 | if (c >= '0' && c <= '9') | |
629 | value += c - '0'; | |
630 | else | |
631 | value += (c & ~40) - 'A'; | |
632 | } | |
633 | ||
634 | if (c == 'b') | |
635 | value *= 512; | |
636 | else if (c == 'B') | |
637 | value *= 1024; | |
638 | else | |
639 | p--; | |
640 | ||
641 | if (*p) | |
8745eafa NC |
642 | fatal (_("invalid integer argument %s"), s); |
643 | ||
252b5132 RH |
644 | return value; |
645 | } | |
646 | ||
647 | static void | |
2da42df6 | 648 | usage (FILE *stream, int status) |
252b5132 | 649 | { |
8b53311e NC |
650 | fprintf (stream, _("Usage: %s [option(s)] [file(s)]\n"), program_name); |
651 | fprintf (stream, _(" Display printable strings in [file(s)] (stdin by default)\n")); | |
652 | fprintf (stream, _(" The options are:\n\ | |
653 | -a - --all Scan the entire file, not just the data section\n\ | |
654 | -f --print-file-name Print the name of the file before each string\n\ | |
655 | -n --bytes=[number] Locate & print any NUL-terminated sequence of at\n\ | |
656 | -<number> least [number] characters (default 4).\n\ | |
657 | -t --radix={o,x,d} Print the location of the string in base 8, 10 or 16\n\ | |
658 | -o An alias for --radix=o\n\ | |
659 | -T --target=<BFDNAME> Specify the binary file format\n\ | |
8745eafa NC |
660 | -e --encoding={s,S,b,l,B,L} Select character size and endianness:\n\ |
661 | s = 7-bit, S = 8-bit, {b,l} = 16-bit, {B,L} = 32-bit\n\ | |
8b53311e NC |
662 | -h --help Display this information\n\ |
663 | -v --version Print the program's version number\n")); | |
252b5132 RH |
664 | list_supported_targets (program_name, stream); |
665 | if (status == 0) | |
8ad3436c | 666 | fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); |
252b5132 RH |
667 | exit (status); |
668 | } |