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1 | /* Getopt for GNU. |
2 | NOTE: getopt is part of the C library, so if you don't know what | |
3 | "Keep this file name-space clean" means, talk to drepper@gnu.org | |
4 | before changing it! | |
5 | Copyright (C) 1987-1996, 1998-2004, 2006, 2008-2011 Free Software | |
6 | Foundation, Inc. | |
7 | This file is part of the GNU C Library. | |
8 | ||
9 | This program is free software: you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
21 | \f | |
22 | #ifndef _LIBC | |
23 | # include <config.h> | |
24 | #endif | |
25 | ||
26 | #include "getopt.h" | |
27 | ||
28 | #include <stdio.h> | |
29 | #include <stdlib.h> | |
30 | #include <string.h> | |
31 | #include <unistd.h> | |
32 | ||
33 | #ifdef _LIBC | |
34 | # include <libintl.h> | |
35 | #else | |
36 | # include "gettext.h" | |
37 | # define _(msgid) gettext (msgid) | |
38 | #endif | |
39 | ||
40 | #if defined _LIBC && defined USE_IN_LIBIO | |
41 | # include <wchar.h> | |
42 | #endif | |
43 | ||
44 | /* This version of `getopt' appears to the caller like standard Unix `getopt' | |
45 | but it behaves differently for the user, since it allows the user | |
46 | to intersperse the options with the other arguments. | |
47 | ||
48 | As `getopt_long' works, it permutes the elements of ARGV so that, | |
49 | when it is done, all the options precede everything else. Thus | |
50 | all application programs are extended to handle flexible argument order. | |
51 | ||
52 | Using `getopt' or setting the environment variable POSIXLY_CORRECT | |
53 | disables permutation. | |
54 | Then the behavior is completely standard. | |
55 | ||
56 | GNU application programs can use a third alternative mode in which | |
57 | they can distinguish the relative order of options and other arguments. */ | |
58 | ||
59 | #include "getopt_int.h" | |
60 | ||
61 | /* For communication from `getopt' to the caller. | |
62 | When `getopt' finds an option that takes an argument, | |
63 | the argument value is returned here. | |
64 | Also, when `ordering' is RETURN_IN_ORDER, | |
65 | each non-option ARGV-element is returned here. */ | |
66 | ||
67 | char *optarg; | |
68 | ||
69 | /* Index in ARGV of the next element to be scanned. | |
70 | This is used for communication to and from the caller | |
71 | and for communication between successive calls to `getopt'. | |
72 | ||
73 | On entry to `getopt', zero means this is the first call; initialize. | |
74 | ||
75 | When `getopt' returns -1, this is the index of the first of the | |
76 | non-option elements that the caller should itself scan. | |
77 | ||
78 | Otherwise, `optind' communicates from one call to the next | |
79 | how much of ARGV has been scanned so far. */ | |
80 | ||
81 | /* 1003.2 says this must be 1 before any call. */ | |
82 | int optind = 1; | |
83 | ||
84 | /* Callers store zero here to inhibit the error message | |
85 | for unrecognized options. */ | |
86 | ||
87 | int opterr = 1; | |
88 | ||
89 | /* Set to an option character which was unrecognized. | |
90 | This must be initialized on some systems to avoid linking in the | |
91 | system's own getopt implementation. */ | |
92 | ||
93 | int optopt = '?'; | |
94 | ||
95 | /* Keep a global copy of all internal members of getopt_data. */ | |
96 | ||
97 | static struct _getopt_data getopt_data; | |
98 | ||
99 | \f | |
100 | #if defined HAVE_DECL_GETENV && !HAVE_DECL_GETENV | |
101 | extern char *getenv (); | |
102 | #endif | |
103 | \f | |
104 | #ifdef _LIBC | |
105 | /* Stored original parameters. | |
106 | XXX This is no good solution. We should rather copy the args so | |
107 | that we can compare them later. But we must not use malloc(3). */ | |
108 | extern int __libc_argc; | |
109 | extern char **__libc_argv; | |
110 | ||
111 | /* Bash 2.0 gives us an environment variable containing flags | |
112 | indicating ARGV elements that should not be considered arguments. */ | |
113 | ||
114 | # ifdef USE_NONOPTION_FLAGS | |
115 | /* Defined in getopt_init.c */ | |
116 | extern char *__getopt_nonoption_flags; | |
117 | # endif | |
118 | ||
119 | # ifdef USE_NONOPTION_FLAGS | |
120 | # define SWAP_FLAGS(ch1, ch2) \ | |
121 | if (d->__nonoption_flags_len > 0) \ | |
122 | { \ | |
123 | char __tmp = __getopt_nonoption_flags[ch1]; \ | |
124 | __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ | |
125 | __getopt_nonoption_flags[ch2] = __tmp; \ | |
126 | } | |
127 | # else | |
128 | # define SWAP_FLAGS(ch1, ch2) | |
129 | # endif | |
130 | #else /* !_LIBC */ | |
131 | # define SWAP_FLAGS(ch1, ch2) | |
132 | #endif /* _LIBC */ | |
133 | ||
134 | /* Exchange two adjacent subsequences of ARGV. | |
135 | One subsequence is elements [first_nonopt,last_nonopt) | |
136 | which contains all the non-options that have been skipped so far. | |
137 | The other is elements [last_nonopt,optind), which contains all | |
138 | the options processed since those non-options were skipped. | |
139 | ||
140 | `first_nonopt' and `last_nonopt' are relocated so that they describe | |
141 | the new indices of the non-options in ARGV after they are moved. */ | |
142 | ||
143 | static void | |
144 | exchange (char **argv, struct _getopt_data *d) | |
145 | { | |
146 | int bottom = d->__first_nonopt; | |
147 | int middle = d->__last_nonopt; | |
148 | int top = d->optind; | |
149 | char *tem; | |
150 | ||
151 | /* Exchange the shorter segment with the far end of the longer segment. | |
152 | That puts the shorter segment into the right place. | |
153 | It leaves the longer segment in the right place overall, | |
154 | but it consists of two parts that need to be swapped next. */ | |
155 | ||
156 | #if defined _LIBC && defined USE_NONOPTION_FLAGS | |
157 | /* First make sure the handling of the `__getopt_nonoption_flags' | |
158 | string can work normally. Our top argument must be in the range | |
159 | of the string. */ | |
160 | if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len) | |
161 | { | |
162 | /* We must extend the array. The user plays games with us and | |
163 | presents new arguments. */ | |
164 | char *new_str = malloc (top + 1); | |
165 | if (new_str == NULL) | |
166 | d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0; | |
167 | else | |
168 | { | |
169 | memset (__mempcpy (new_str, __getopt_nonoption_flags, | |
170 | d->__nonoption_flags_max_len), | |
171 | '\0', top + 1 - d->__nonoption_flags_max_len); | |
172 | d->__nonoption_flags_max_len = top + 1; | |
173 | __getopt_nonoption_flags = new_str; | |
174 | } | |
175 | } | |
176 | #endif | |
177 | ||
178 | while (top > middle && middle > bottom) | |
179 | { | |
180 | if (top - middle > middle - bottom) | |
181 | { | |
182 | /* Bottom segment is the short one. */ | |
183 | int len = middle - bottom; | |
184 | register int i; | |
185 | ||
186 | /* Swap it with the top part of the top segment. */ | |
187 | for (i = 0; i < len; i++) | |
188 | { | |
189 | tem = argv[bottom + i]; | |
190 | argv[bottom + i] = argv[top - (middle - bottom) + i]; | |
191 | argv[top - (middle - bottom) + i] = tem; | |
192 | SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); | |
193 | } | |
194 | /* Exclude the moved bottom segment from further swapping. */ | |
195 | top -= len; | |
196 | } | |
197 | else | |
198 | { | |
199 | /* Top segment is the short one. */ | |
200 | int len = top - middle; | |
201 | register int i; | |
202 | ||
203 | /* Swap it with the bottom part of the bottom segment. */ | |
204 | for (i = 0; i < len; i++) | |
205 | { | |
206 | tem = argv[bottom + i]; | |
207 | argv[bottom + i] = argv[middle + i]; | |
208 | argv[middle + i] = tem; | |
209 | SWAP_FLAGS (bottom + i, middle + i); | |
210 | } | |
211 | /* Exclude the moved top segment from further swapping. */ | |
212 | bottom += len; | |
213 | } | |
214 | } | |
215 | ||
216 | /* Update records for the slots the non-options now occupy. */ | |
217 | ||
218 | d->__first_nonopt += (d->optind - d->__last_nonopt); | |
219 | d->__last_nonopt = d->optind; | |
220 | } | |
221 | ||
222 | /* Initialize the internal data when the first call is made. */ | |
223 | ||
224 | static const char * | |
225 | _getopt_initialize (int argc _GL_UNUSED, | |
226 | char **argv _GL_UNUSED, const char *optstring, | |
227 | struct _getopt_data *d, int posixly_correct) | |
228 | { | |
229 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 | |
230 | is the program name); the sequence of previously skipped | |
231 | non-option ARGV-elements is empty. */ | |
232 | ||
233 | d->__first_nonopt = d->__last_nonopt = d->optind; | |
234 | ||
235 | d->__nextchar = NULL; | |
236 | ||
237 | d->__posixly_correct = posixly_correct || !!getenv ("POSIXLY_CORRECT"); | |
238 | ||
239 | /* Determine how to handle the ordering of options and nonoptions. */ | |
240 | ||
241 | if (optstring[0] == '-') | |
242 | { | |
243 | d->__ordering = RETURN_IN_ORDER; | |
244 | ++optstring; | |
245 | } | |
246 | else if (optstring[0] == '+') | |
247 | { | |
248 | d->__ordering = REQUIRE_ORDER; | |
249 | ++optstring; | |
250 | } | |
251 | else if (d->__posixly_correct) | |
252 | d->__ordering = REQUIRE_ORDER; | |
253 | else | |
254 | d->__ordering = PERMUTE; | |
255 | ||
256 | #if defined _LIBC && defined USE_NONOPTION_FLAGS | |
257 | if (!d->__posixly_correct | |
258 | && argc == __libc_argc && argv == __libc_argv) | |
259 | { | |
260 | if (d->__nonoption_flags_max_len == 0) | |
261 | { | |
262 | if (__getopt_nonoption_flags == NULL | |
263 | || __getopt_nonoption_flags[0] == '\0') | |
264 | d->__nonoption_flags_max_len = -1; | |
265 | else | |
266 | { | |
267 | const char *orig_str = __getopt_nonoption_flags; | |
268 | int len = d->__nonoption_flags_max_len = strlen (orig_str); | |
269 | if (d->__nonoption_flags_max_len < argc) | |
270 | d->__nonoption_flags_max_len = argc; | |
271 | __getopt_nonoption_flags = | |
272 | (char *) malloc (d->__nonoption_flags_max_len); | |
273 | if (__getopt_nonoption_flags == NULL) | |
274 | d->__nonoption_flags_max_len = -1; | |
275 | else | |
276 | memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), | |
277 | '\0', d->__nonoption_flags_max_len - len); | |
278 | } | |
279 | } | |
280 | d->__nonoption_flags_len = d->__nonoption_flags_max_len; | |
281 | } | |
282 | else | |
283 | d->__nonoption_flags_len = 0; | |
284 | #endif | |
285 | ||
286 | return optstring; | |
287 | } | |
288 | \f | |
289 | /* Scan elements of ARGV (whose length is ARGC) for option characters | |
290 | given in OPTSTRING. | |
291 | ||
292 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
293 | then it is an option element. The characters of this element | |
294 | (aside from the initial '-') are option characters. If `getopt' | |
295 | is called repeatedly, it returns successively each of the option characters | |
296 | from each of the option elements. | |
297 | ||
298 | If `getopt' finds another option character, it returns that character, | |
299 | updating `optind' and `nextchar' so that the next call to `getopt' can | |
300 | resume the scan with the following option character or ARGV-element. | |
301 | ||
302 | If there are no more option characters, `getopt' returns -1. | |
303 | Then `optind' is the index in ARGV of the first ARGV-element | |
304 | that is not an option. (The ARGV-elements have been permuted | |
305 | so that those that are not options now come last.) | |
306 | ||
307 | OPTSTRING is a string containing the legitimate option characters. | |
308 | If an option character is seen that is not listed in OPTSTRING, | |
309 | return '?' after printing an error message. If you set `opterr' to | |
310 | zero, the error message is suppressed but we still return '?'. | |
311 | ||
312 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
313 | so the following text in the same ARGV-element, or the text of the following | |
314 | ARGV-element, is returned in `optarg'. Two colons mean an option that | |
315 | wants an optional arg; if there is text in the current ARGV-element, | |
316 | it is returned in `optarg', otherwise `optarg' is set to zero. | |
317 | ||
318 | If OPTSTRING starts with `-' or `+', it requests different methods of | |
319 | handling the non-option ARGV-elements. | |
320 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
321 | ||
322 | Long-named options begin with `--' instead of `-'. | |
323 | Their names may be abbreviated as long as the abbreviation is unique | |
324 | or is an exact match for some defined option. If they have an | |
325 | argument, it follows the option name in the same ARGV-element, separated | |
326 | from the option name by a `=', or else the in next ARGV-element. | |
327 | When `getopt' finds a long-named option, it returns 0 if that option's | |
328 | `flag' field is nonzero, the value of the option's `val' field | |
329 | if the `flag' field is zero. | |
330 | ||
331 | The elements of ARGV aren't really const, because we permute them. | |
332 | But we pretend they're const in the prototype to be compatible | |
333 | with other systems. | |
334 | ||
335 | LONGOPTS is a vector of `struct option' terminated by an | |
336 | element containing a name which is zero. | |
337 | ||
338 | LONGIND returns the index in LONGOPT of the long-named option found. | |
339 | It is only valid when a long-named option has been found by the most | |
340 | recent call. | |
341 | ||
342 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
343 | long-named options. */ | |
344 | ||
345 | int | |
346 | _getopt_internal_r (int argc, char **argv, const char *optstring, | |
347 | const struct option *longopts, int *longind, | |
348 | int long_only, struct _getopt_data *d, int posixly_correct) | |
349 | { | |
350 | int print_errors = d->opterr; | |
351 | ||
352 | if (argc < 1) | |
353 | return -1; | |
354 | ||
355 | d->optarg = NULL; | |
356 | ||
357 | if (d->optind == 0 || !d->__initialized) | |
358 | { | |
359 | if (d->optind == 0) | |
360 | d->optind = 1; /* Don't scan ARGV[0], the program name. */ | |
361 | optstring = _getopt_initialize (argc, argv, optstring, d, | |
362 | posixly_correct); | |
363 | d->__initialized = 1; | |
364 | } | |
365 | else if (optstring[0] == '-' || optstring[0] == '+') | |
366 | optstring++; | |
367 | if (optstring[0] == ':') | |
368 | print_errors = 0; | |
369 | ||
370 | /* Test whether ARGV[optind] points to a non-option argument. | |
371 | Either it does not have option syntax, or there is an environment flag | |
372 | from the shell indicating it is not an option. The later information | |
373 | is only used when the used in the GNU libc. */ | |
374 | #if defined _LIBC && defined USE_NONOPTION_FLAGS | |
375 | # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \ | |
376 | || (d->optind < d->__nonoption_flags_len \ | |
377 | && __getopt_nonoption_flags[d->optind] == '1')) | |
378 | #else | |
379 | # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0') | |
380 | #endif | |
381 | ||
382 | if (d->__nextchar == NULL || *d->__nextchar == '\0') | |
383 | { | |
384 | /* Advance to the next ARGV-element. */ | |
385 | ||
386 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been | |
387 | moved back by the user (who may also have changed the arguments). */ | |
388 | if (d->__last_nonopt > d->optind) | |
389 | d->__last_nonopt = d->optind; | |
390 | if (d->__first_nonopt > d->optind) | |
391 | d->__first_nonopt = d->optind; | |
392 | ||
393 | if (d->__ordering == PERMUTE) | |
394 | { | |
395 | /* If we have just processed some options following some non-options, | |
396 | exchange them so that the options come first. */ | |
397 | ||
398 | if (d->__first_nonopt != d->__last_nonopt | |
399 | && d->__last_nonopt != d->optind) | |
400 | exchange ((char **) argv, d); | |
401 | else if (d->__last_nonopt != d->optind) | |
402 | d->__first_nonopt = d->optind; | |
403 | ||
404 | /* Skip any additional non-options | |
405 | and extend the range of non-options previously skipped. */ | |
406 | ||
407 | while (d->optind < argc && NONOPTION_P) | |
408 | d->optind++; | |
409 | d->__last_nonopt = d->optind; | |
410 | } | |
411 | ||
412 | /* The special ARGV-element `--' means premature end of options. | |
413 | Skip it like a null option, | |
414 | then exchange with previous non-options as if it were an option, | |
415 | then skip everything else like a non-option. */ | |
416 | ||
417 | if (d->optind != argc && !strcmp (argv[d->optind], "--")) | |
418 | { | |
419 | d->optind++; | |
420 | ||
421 | if (d->__first_nonopt != d->__last_nonopt | |
422 | && d->__last_nonopt != d->optind) | |
423 | exchange ((char **) argv, d); | |
424 | else if (d->__first_nonopt == d->__last_nonopt) | |
425 | d->__first_nonopt = d->optind; | |
426 | d->__last_nonopt = argc; | |
427 | ||
428 | d->optind = argc; | |
429 | } | |
430 | ||
431 | /* If we have done all the ARGV-elements, stop the scan | |
432 | and back over any non-options that we skipped and permuted. */ | |
433 | ||
434 | if (d->optind == argc) | |
435 | { | |
436 | /* Set the next-arg-index to point at the non-options | |
437 | that we previously skipped, so the caller will digest them. */ | |
438 | if (d->__first_nonopt != d->__last_nonopt) | |
439 | d->optind = d->__first_nonopt; | |
440 | return -1; | |
441 | } | |
442 | ||
443 | /* If we have come to a non-option and did not permute it, | |
444 | either stop the scan or describe it to the caller and pass it by. */ | |
445 | ||
446 | if (NONOPTION_P) | |
447 | { | |
448 | if (d->__ordering == REQUIRE_ORDER) | |
449 | return -1; | |
450 | d->optarg = argv[d->optind++]; | |
451 | return 1; | |
452 | } | |
453 | ||
454 | /* We have found another option-ARGV-element. | |
455 | Skip the initial punctuation. */ | |
456 | ||
457 | d->__nextchar = (argv[d->optind] + 1 | |
458 | + (longopts != NULL && argv[d->optind][1] == '-')); | |
459 | } | |
460 | ||
461 | /* Decode the current option-ARGV-element. */ | |
462 | ||
463 | /* Check whether the ARGV-element is a long option. | |
464 | ||
465 | If long_only and the ARGV-element has the form "-f", where f is | |
466 | a valid short option, don't consider it an abbreviated form of | |
467 | a long option that starts with f. Otherwise there would be no | |
468 | way to give the -f short option. | |
469 | ||
470 | On the other hand, if there's a long option "fubar" and | |
471 | the ARGV-element is "-fu", do consider that an abbreviation of | |
472 | the long option, just like "--fu", and not "-f" with arg "u". | |
473 | ||
474 | This distinction seems to be the most useful approach. */ | |
475 | ||
476 | if (longopts != NULL | |
477 | && (argv[d->optind][1] == '-' | |
478 | || (long_only && (argv[d->optind][2] | |
479 | || !strchr (optstring, argv[d->optind][1]))))) | |
480 | { | |
481 | char *nameend; | |
482 | const struct option *p; | |
483 | const struct option *pfound = NULL; | |
484 | int exact = 0; | |
485 | int ambig = 0; | |
486 | int indfound = -1; | |
487 | int option_index; | |
488 | ||
489 | for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++) | |
490 | /* Do nothing. */ ; | |
491 | ||
492 | /* Test all long options for either exact match | |
493 | or abbreviated matches. */ | |
494 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
495 | if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar)) | |
496 | { | |
497 | if ((unsigned int) (nameend - d->__nextchar) | |
498 | == (unsigned int) strlen (p->name)) | |
499 | { | |
500 | /* Exact match found. */ | |
501 | pfound = p; | |
502 | indfound = option_index; | |
503 | exact = 1; | |
504 | break; | |
505 | } | |
506 | else if (pfound == NULL) | |
507 | { | |
508 | /* First nonexact match found. */ | |
509 | pfound = p; | |
510 | indfound = option_index; | |
511 | } | |
512 | else if (long_only | |
513 | || pfound->has_arg != p->has_arg | |
514 | || pfound->flag != p->flag | |
515 | || pfound->val != p->val) | |
516 | /* Second or later nonexact match found. */ | |
517 | ambig = 1; | |
518 | } | |
519 | ||
520 | if (ambig && !exact) | |
521 | { | |
522 | if (print_errors) | |
523 | { | |
524 | #if defined _LIBC && defined USE_IN_LIBIO | |
525 | char *buf; | |
526 | ||
527 | if (__asprintf (&buf, _("%s: option '%s' is ambiguous\n"), | |
528 | argv[0], argv[d->optind]) >= 0) | |
529 | { | |
530 | _IO_flockfile (stderr); | |
531 | ||
532 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
533 | ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; | |
534 | ||
535 | __fxprintf (NULL, "%s", buf); | |
536 | ||
537 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
538 | _IO_funlockfile (stderr); | |
539 | ||
540 | free (buf); | |
541 | } | |
542 | #else | |
543 | fprintf (stderr, _("%s: option '%s' is ambiguous\n"), | |
544 | argv[0], argv[d->optind]); | |
545 | #endif | |
546 | } | |
547 | d->__nextchar += strlen (d->__nextchar); | |
548 | d->optind++; | |
549 | d->optopt = 0; | |
550 | return '?'; | |
551 | } | |
552 | ||
553 | if (pfound != NULL) | |
554 | { | |
555 | option_index = indfound; | |
556 | d->optind++; | |
557 | if (*nameend) | |
558 | { | |
559 | /* Don't test has_arg with >, because some C compilers don't | |
560 | allow it to be used on enums. */ | |
561 | if (pfound->has_arg) | |
562 | d->optarg = nameend + 1; | |
563 | else | |
564 | { | |
565 | if (print_errors) | |
566 | { | |
567 | #if defined _LIBC && defined USE_IN_LIBIO | |
568 | char *buf; | |
569 | int n; | |
570 | #endif | |
571 | ||
572 | if (argv[d->optind - 1][1] == '-') | |
573 | { | |
574 | /* --option */ | |
575 | #if defined _LIBC && defined USE_IN_LIBIO | |
576 | n = __asprintf (&buf, _("\ | |
577 | %s: option '--%s' doesn't allow an argument\n"), | |
578 | argv[0], pfound->name); | |
579 | #else | |
580 | fprintf (stderr, _("\ | |
581 | %s: option '--%s' doesn't allow an argument\n"), | |
582 | argv[0], pfound->name); | |
583 | #endif | |
584 | } | |
585 | else | |
586 | { | |
587 | /* +option or -option */ | |
588 | #if defined _LIBC && defined USE_IN_LIBIO | |
589 | n = __asprintf (&buf, _("\ | |
590 | %s: option '%c%s' doesn't allow an argument\n"), | |
591 | argv[0], argv[d->optind - 1][0], | |
592 | pfound->name); | |
593 | #else | |
594 | fprintf (stderr, _("\ | |
595 | %s: option '%c%s' doesn't allow an argument\n"), | |
596 | argv[0], argv[d->optind - 1][0], | |
597 | pfound->name); | |
598 | #endif | |
599 | } | |
600 | ||
601 | #if defined _LIBC && defined USE_IN_LIBIO | |
602 | if (n >= 0) | |
603 | { | |
604 | _IO_flockfile (stderr); | |
605 | ||
606 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
607 | ((_IO_FILE *) stderr)->_flags2 | |
608 | |= _IO_FLAGS2_NOTCANCEL; | |
609 | ||
610 | __fxprintf (NULL, "%s", buf); | |
611 | ||
612 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
613 | _IO_funlockfile (stderr); | |
614 | ||
615 | free (buf); | |
616 | } | |
617 | #endif | |
618 | } | |
619 | ||
620 | d->__nextchar += strlen (d->__nextchar); | |
621 | ||
622 | d->optopt = pfound->val; | |
623 | return '?'; | |
624 | } | |
625 | } | |
626 | else if (pfound->has_arg == 1) | |
627 | { | |
628 | if (d->optind < argc) | |
629 | d->optarg = argv[d->optind++]; | |
630 | else | |
631 | { | |
632 | if (print_errors) | |
633 | { | |
634 | #if defined _LIBC && defined USE_IN_LIBIO | |
635 | char *buf; | |
636 | ||
637 | if (__asprintf (&buf, _("\ | |
638 | %s: option '--%s' requires an argument\n"), | |
639 | argv[0], pfound->name) >= 0) | |
640 | { | |
641 | _IO_flockfile (stderr); | |
642 | ||
643 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
644 | ((_IO_FILE *) stderr)->_flags2 | |
645 | |= _IO_FLAGS2_NOTCANCEL; | |
646 | ||
647 | __fxprintf (NULL, "%s", buf); | |
648 | ||
649 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
650 | _IO_funlockfile (stderr); | |
651 | ||
652 | free (buf); | |
653 | } | |
654 | #else | |
655 | fprintf (stderr, | |
656 | _("%s: option '--%s' requires an argument\n"), | |
657 | argv[0], pfound->name); | |
658 | #endif | |
659 | } | |
660 | d->__nextchar += strlen (d->__nextchar); | |
661 | d->optopt = pfound->val; | |
662 | return optstring[0] == ':' ? ':' : '?'; | |
663 | } | |
664 | } | |
665 | d->__nextchar += strlen (d->__nextchar); | |
666 | if (longind != NULL) | |
667 | *longind = option_index; | |
668 | if (pfound->flag) | |
669 | { | |
670 | *(pfound->flag) = pfound->val; | |
671 | return 0; | |
672 | } | |
673 | return pfound->val; | |
674 | } | |
675 | ||
676 | /* Can't find it as a long option. If this is not getopt_long_only, | |
677 | or the option starts with '--' or is not a valid short | |
678 | option, then it's an error. | |
679 | Otherwise interpret it as a short option. */ | |
680 | if (!long_only || argv[d->optind][1] == '-' | |
681 | || strchr (optstring, *d->__nextchar) == NULL) | |
682 | { | |
683 | if (print_errors) | |
684 | { | |
685 | #if defined _LIBC && defined USE_IN_LIBIO | |
686 | char *buf; | |
687 | int n; | |
688 | #endif | |
689 | ||
690 | if (argv[d->optind][1] == '-') | |
691 | { | |
692 | /* --option */ | |
693 | #if defined _LIBC && defined USE_IN_LIBIO | |
694 | n = __asprintf (&buf, _("%s: unrecognized option '--%s'\n"), | |
695 | argv[0], d->__nextchar); | |
696 | #else | |
697 | fprintf (stderr, _("%s: unrecognized option '--%s'\n"), | |
698 | argv[0], d->__nextchar); | |
699 | #endif | |
700 | } | |
701 | else | |
702 | { | |
703 | /* +option or -option */ | |
704 | #if defined _LIBC && defined USE_IN_LIBIO | |
705 | n = __asprintf (&buf, _("%s: unrecognized option '%c%s'\n"), | |
706 | argv[0], argv[d->optind][0], d->__nextchar); | |
707 | #else | |
708 | fprintf (stderr, _("%s: unrecognized option '%c%s'\n"), | |
709 | argv[0], argv[d->optind][0], d->__nextchar); | |
710 | #endif | |
711 | } | |
712 | ||
713 | #if defined _LIBC && defined USE_IN_LIBIO | |
714 | if (n >= 0) | |
715 | { | |
716 | _IO_flockfile (stderr); | |
717 | ||
718 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
719 | ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; | |
720 | ||
721 | __fxprintf (NULL, "%s", buf); | |
722 | ||
723 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
724 | _IO_funlockfile (stderr); | |
725 | ||
726 | free (buf); | |
727 | } | |
728 | #endif | |
729 | } | |
730 | d->__nextchar = (char *) ""; | |
731 | d->optind++; | |
732 | d->optopt = 0; | |
733 | return '?'; | |
734 | } | |
735 | } | |
736 | ||
737 | /* Look at and handle the next short option-character. */ | |
738 | ||
739 | { | |
740 | char c = *d->__nextchar++; | |
741 | const char *temp = strchr (optstring, c); | |
742 | ||
743 | /* Increment `optind' when we start to process its last character. */ | |
744 | if (*d->__nextchar == '\0') | |
745 | ++d->optind; | |
746 | ||
747 | if (temp == NULL || c == ':' || c == ';') | |
748 | { | |
749 | if (print_errors) | |
750 | { | |
751 | #if defined _LIBC && defined USE_IN_LIBIO | |
752 | char *buf; | |
753 | int n; | |
754 | #endif | |
755 | ||
756 | #if defined _LIBC && defined USE_IN_LIBIO | |
757 | n = __asprintf (&buf, _("%s: invalid option -- '%c'\n"), | |
758 | argv[0], c); | |
759 | #else | |
760 | fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c); | |
761 | #endif | |
762 | ||
763 | #if defined _LIBC && defined USE_IN_LIBIO | |
764 | if (n >= 0) | |
765 | { | |
766 | _IO_flockfile (stderr); | |
767 | ||
768 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
769 | ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; | |
770 | ||
771 | __fxprintf (NULL, "%s", buf); | |
772 | ||
773 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
774 | _IO_funlockfile (stderr); | |
775 | ||
776 | free (buf); | |
777 | } | |
778 | #endif | |
779 | } | |
780 | d->optopt = c; | |
781 | return '?'; | |
782 | } | |
783 | /* Convenience. Treat POSIX -W foo same as long option --foo */ | |
784 | if (temp[0] == 'W' && temp[1] == ';') | |
785 | { | |
786 | char *nameend; | |
787 | const struct option *p; | |
788 | const struct option *pfound = NULL; | |
789 | int exact = 0; | |
790 | int ambig = 0; | |
791 | int indfound = 0; | |
792 | int option_index; | |
793 | ||
794 | /* This is an option that requires an argument. */ | |
795 | if (*d->__nextchar != '\0') | |
796 | { | |
797 | d->optarg = d->__nextchar; | |
798 | /* If we end this ARGV-element by taking the rest as an arg, | |
799 | we must advance to the next element now. */ | |
800 | d->optind++; | |
801 | } | |
802 | else if (d->optind == argc) | |
803 | { | |
804 | if (print_errors) | |
805 | { | |
806 | #if defined _LIBC && defined USE_IN_LIBIO | |
807 | char *buf; | |
808 | ||
809 | if (__asprintf (&buf, | |
810 | _("%s: option requires an argument -- '%c'\n"), | |
811 | argv[0], c) >= 0) | |
812 | { | |
813 | _IO_flockfile (stderr); | |
814 | ||
815 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
816 | ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; | |
817 | ||
818 | __fxprintf (NULL, "%s", buf); | |
819 | ||
820 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
821 | _IO_funlockfile (stderr); | |
822 | ||
823 | free (buf); | |
824 | } | |
825 | #else | |
826 | fprintf (stderr, | |
827 | _("%s: option requires an argument -- '%c'\n"), | |
828 | argv[0], c); | |
829 | #endif | |
830 | } | |
831 | d->optopt = c; | |
832 | if (optstring[0] == ':') | |
833 | c = ':'; | |
834 | else | |
835 | c = '?'; | |
836 | return c; | |
837 | } | |
838 | else | |
839 | /* We already incremented `d->optind' once; | |
840 | increment it again when taking next ARGV-elt as argument. */ | |
841 | d->optarg = argv[d->optind++]; | |
842 | ||
843 | /* optarg is now the argument, see if it's in the | |
844 | table of longopts. */ | |
845 | ||
846 | for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '='; | |
847 | nameend++) | |
848 | /* Do nothing. */ ; | |
849 | ||
850 | /* Test all long options for either exact match | |
851 | or abbreviated matches. */ | |
852 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
853 | if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar)) | |
854 | { | |
855 | if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name)) | |
856 | { | |
857 | /* Exact match found. */ | |
858 | pfound = p; | |
859 | indfound = option_index; | |
860 | exact = 1; | |
861 | break; | |
862 | } | |
863 | else if (pfound == NULL) | |
864 | { | |
865 | /* First nonexact match found. */ | |
866 | pfound = p; | |
867 | indfound = option_index; | |
868 | } | |
869 | else if (long_only | |
870 | || pfound->has_arg != p->has_arg | |
871 | || pfound->flag != p->flag | |
872 | || pfound->val != p->val) | |
873 | /* Second or later nonexact match found. */ | |
874 | ambig = 1; | |
875 | } | |
876 | if (ambig && !exact) | |
877 | { | |
878 | if (print_errors) | |
879 | { | |
880 | #if defined _LIBC && defined USE_IN_LIBIO | |
881 | char *buf; | |
882 | ||
883 | if (__asprintf (&buf, _("%s: option '-W %s' is ambiguous\n"), | |
884 | argv[0], d->optarg) >= 0) | |
885 | { | |
886 | _IO_flockfile (stderr); | |
887 | ||
888 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
889 | ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; | |
890 | ||
891 | __fxprintf (NULL, "%s", buf); | |
892 | ||
893 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
894 | _IO_funlockfile (stderr); | |
895 | ||
896 | free (buf); | |
897 | } | |
898 | #else | |
899 | fprintf (stderr, _("%s: option '-W %s' is ambiguous\n"), | |
900 | argv[0], d->optarg); | |
901 | #endif | |
902 | } | |
903 | d->__nextchar += strlen (d->__nextchar); | |
904 | d->optind++; | |
905 | return '?'; | |
906 | } | |
907 | if (pfound != NULL) | |
908 | { | |
909 | option_index = indfound; | |
910 | if (*nameend) | |
911 | { | |
912 | /* Don't test has_arg with >, because some C compilers don't | |
913 | allow it to be used on enums. */ | |
914 | if (pfound->has_arg) | |
915 | d->optarg = nameend + 1; | |
916 | else | |
917 | { | |
918 | if (print_errors) | |
919 | { | |
920 | #if defined _LIBC && defined USE_IN_LIBIO | |
921 | char *buf; | |
922 | ||
923 | if (__asprintf (&buf, _("\ | |
924 | %s: option '-W %s' doesn't allow an argument\n"), | |
925 | argv[0], pfound->name) >= 0) | |
926 | { | |
927 | _IO_flockfile (stderr); | |
928 | ||
929 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
930 | ((_IO_FILE *) stderr)->_flags2 | |
931 | |= _IO_FLAGS2_NOTCANCEL; | |
932 | ||
933 | __fxprintf (NULL, "%s", buf); | |
934 | ||
935 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
936 | _IO_funlockfile (stderr); | |
937 | ||
938 | free (buf); | |
939 | } | |
940 | #else | |
941 | fprintf (stderr, _("\ | |
942 | %s: option '-W %s' doesn't allow an argument\n"), | |
943 | argv[0], pfound->name); | |
944 | #endif | |
945 | } | |
946 | ||
947 | d->__nextchar += strlen (d->__nextchar); | |
948 | return '?'; | |
949 | } | |
950 | } | |
951 | else if (pfound->has_arg == 1) | |
952 | { | |
953 | if (d->optind < argc) | |
954 | d->optarg = argv[d->optind++]; | |
955 | else | |
956 | { | |
957 | if (print_errors) | |
958 | { | |
959 | #if defined _LIBC && defined USE_IN_LIBIO | |
960 | char *buf; | |
961 | ||
962 | if (__asprintf (&buf, _("\ | |
963 | %s: option '-W %s' requires an argument\n"), | |
964 | argv[0], pfound->name) >= 0) | |
965 | { | |
966 | _IO_flockfile (stderr); | |
967 | ||
968 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
969 | ((_IO_FILE *) stderr)->_flags2 | |
970 | |= _IO_FLAGS2_NOTCANCEL; | |
971 | ||
972 | __fxprintf (NULL, "%s", buf); | |
973 | ||
974 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
975 | _IO_funlockfile (stderr); | |
976 | ||
977 | free (buf); | |
978 | } | |
979 | #else | |
980 | fprintf (stderr, _("\ | |
981 | %s: option '-W %s' requires an argument\n"), | |
982 | argv[0], pfound->name); | |
983 | #endif | |
984 | } | |
985 | d->__nextchar += strlen (d->__nextchar); | |
986 | return optstring[0] == ':' ? ':' : '?'; | |
987 | } | |
988 | } | |
989 | else | |
990 | d->optarg = NULL; | |
991 | d->__nextchar += strlen (d->__nextchar); | |
992 | if (longind != NULL) | |
993 | *longind = option_index; | |
994 | if (pfound->flag) | |
995 | { | |
996 | *(pfound->flag) = pfound->val; | |
997 | return 0; | |
998 | } | |
999 | return pfound->val; | |
1000 | } | |
1001 | d->__nextchar = NULL; | |
1002 | return 'W'; /* Let the application handle it. */ | |
1003 | } | |
1004 | if (temp[1] == ':') | |
1005 | { | |
1006 | if (temp[2] == ':') | |
1007 | { | |
1008 | /* This is an option that accepts an argument optionally. */ | |
1009 | if (*d->__nextchar != '\0') | |
1010 | { | |
1011 | d->optarg = d->__nextchar; | |
1012 | d->optind++; | |
1013 | } | |
1014 | else | |
1015 | d->optarg = NULL; | |
1016 | d->__nextchar = NULL; | |
1017 | } | |
1018 | else | |
1019 | { | |
1020 | /* This is an option that requires an argument. */ | |
1021 | if (*d->__nextchar != '\0') | |
1022 | { | |
1023 | d->optarg = d->__nextchar; | |
1024 | /* If we end this ARGV-element by taking the rest as an arg, | |
1025 | we must advance to the next element now. */ | |
1026 | d->optind++; | |
1027 | } | |
1028 | else if (d->optind == argc) | |
1029 | { | |
1030 | if (print_errors) | |
1031 | { | |
1032 | #if defined _LIBC && defined USE_IN_LIBIO | |
1033 | char *buf; | |
1034 | ||
1035 | if (__asprintf (&buf, _("\ | |
1036 | %s: option requires an argument -- '%c'\n"), | |
1037 | argv[0], c) >= 0) | |
1038 | { | |
1039 | _IO_flockfile (stderr); | |
1040 | ||
1041 | int old_flags2 = ((_IO_FILE *) stderr)->_flags2; | |
1042 | ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; | |
1043 | ||
1044 | __fxprintf (NULL, "%s", buf); | |
1045 | ||
1046 | ((_IO_FILE *) stderr)->_flags2 = old_flags2; | |
1047 | _IO_funlockfile (stderr); | |
1048 | ||
1049 | free (buf); | |
1050 | } | |
1051 | #else | |
1052 | fprintf (stderr, | |
1053 | _("%s: option requires an argument -- '%c'\n"), | |
1054 | argv[0], c); | |
1055 | #endif | |
1056 | } | |
1057 | d->optopt = c; | |
1058 | if (optstring[0] == ':') | |
1059 | c = ':'; | |
1060 | else | |
1061 | c = '?'; | |
1062 | } | |
1063 | else | |
1064 | /* We already incremented `optind' once; | |
1065 | increment it again when taking next ARGV-elt as argument. */ | |
1066 | d->optarg = argv[d->optind++]; | |
1067 | d->__nextchar = NULL; | |
1068 | } | |
1069 | } | |
1070 | return c; | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | int | |
1075 | _getopt_internal (int argc, char **argv, const char *optstring, | |
1076 | const struct option *longopts, int *longind, int long_only, | |
1077 | int posixly_correct) | |
1078 | { | |
1079 | int result; | |
1080 | ||
1081 | getopt_data.optind = optind; | |
1082 | getopt_data.opterr = opterr; | |
1083 | ||
1084 | result = _getopt_internal_r (argc, argv, optstring, longopts, | |
1085 | longind, long_only, &getopt_data, | |
1086 | posixly_correct); | |
1087 | ||
1088 | optind = getopt_data.optind; | |
1089 | optarg = getopt_data.optarg; | |
1090 | optopt = getopt_data.optopt; | |
1091 | ||
1092 | return result; | |
1093 | } | |
1094 | ||
1095 | /* glibc gets a LSB-compliant getopt. | |
1096 | Standalone applications get a POSIX-compliant getopt. */ | |
1097 | #if _LIBC | |
1098 | enum { POSIXLY_CORRECT = 0 }; | |
1099 | #else | |
1100 | enum { POSIXLY_CORRECT = 1 }; | |
1101 | #endif | |
1102 | ||
1103 | int | |
1104 | getopt (int argc, char *const *argv, const char *optstring) | |
1105 | { | |
1106 | return _getopt_internal (argc, (char **) argv, optstring, | |
1107 | (const struct option *) 0, | |
1108 | (int *) 0, | |
1109 | 0, POSIXLY_CORRECT); | |
1110 | } | |
1111 | ||
1112 | #ifdef _LIBC | |
1113 | int | |
1114 | __posix_getopt (int argc, char *const *argv, const char *optstring) | |
1115 | { | |
1116 | return _getopt_internal (argc, argv, optstring, | |
1117 | (const struct option *) 0, | |
1118 | (int *) 0, | |
1119 | 0, 1); | |
1120 | } | |
1121 | #endif | |
1122 | ||
1123 | \f | |
1124 | #ifdef TEST | |
1125 | ||
1126 | /* Compile with -DTEST to make an executable for use in testing | |
1127 | the above definition of `getopt'. */ | |
1128 | ||
1129 | int | |
1130 | main (int argc, char **argv) | |
1131 | { | |
1132 | int c; | |
1133 | int digit_optind = 0; | |
1134 | ||
1135 | while (1) | |
1136 | { | |
1137 | int this_option_optind = optind ? optind : 1; | |
1138 | ||
1139 | c = getopt (argc, argv, "abc:d:0123456789"); | |
1140 | if (c == -1) | |
1141 | break; | |
1142 | ||
1143 | switch (c) | |
1144 | { | |
1145 | case '0': | |
1146 | case '1': | |
1147 | case '2': | |
1148 | case '3': | |
1149 | case '4': | |
1150 | case '5': | |
1151 | case '6': | |
1152 | case '7': | |
1153 | case '8': | |
1154 | case '9': | |
1155 | if (digit_optind != 0 && digit_optind != this_option_optind) | |
1156 | printf ("digits occur in two different argv-elements.\n"); | |
1157 | digit_optind = this_option_optind; | |
1158 | printf ("option %c\n", c); | |
1159 | break; | |
1160 | ||
1161 | case 'a': | |
1162 | printf ("option a\n"); | |
1163 | break; | |
1164 | ||
1165 | case 'b': | |
1166 | printf ("option b\n"); | |
1167 | break; | |
1168 | ||
1169 | case 'c': | |
1170 | printf ("option c with value '%s'\n", optarg); | |
1171 | break; | |
1172 | ||
1173 | case '?': | |
1174 | break; | |
1175 | ||
1176 | default: | |
1177 | printf ("?? getopt returned character code 0%o ??\n", c); | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | if (optind < argc) | |
1182 | { | |
1183 | printf ("non-option ARGV-elements: "); | |
1184 | while (optind < argc) | |
1185 | printf ("%s ", argv[optind++]); | |
1186 | printf ("\n"); | |
1187 | } | |
1188 | ||
1189 | exit (0); | |
1190 | } | |
1191 | ||
1192 | #endif /* TEST */ |