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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) 1987-1996,1998-2004,2008,2009,2010
6 Free Software Foundation, Inc.
7 This file is part of the GNU C Library.
8
9 The GNU C Library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 The GNU C Library 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 GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with the GNU C Library; if not, write to the Free
21 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 02111-1307 USA. */
23 \f
24 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
25 Ditto for AIX 3.2 and <stdlib.h>. */
26 #ifndef _NO_PROTO
27 # define _NO_PROTO
28 #endif
29
30 #ifdef HAVE_CONFIG_H
31 # include <config.h>
32 #endif
33
34 #include <stdio.h>
35
36 /* Comment out all this code if we are using the GNU C Library, and are not
37 actually compiling the library itself. This code is part of the GNU C
38 Library, but also included in many other GNU distributions. Compiling
39 and linking in this code is a waste when using the GNU C library
40 (especially if it is a shared library). Rather than having every GNU
41 program understand `configure --with-gnu-libc' and omit the object files,
42 it is simpler to just do this in the source for each such file. */
43
44 #define GETOPT_INTERFACE_VERSION 2
45 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
46 # include <gnu-versions.h>
47 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
48 # define ELIDE_CODE
49 # endif
50 #endif
51
52 #ifndef ELIDE_CODE
53
54
55 /* This needs to come after some library #include
56 to get __GNU_LIBRARY__ defined. */
57 #ifdef __GNU_LIBRARY__
58 /* Don't include stdlib.h for non-GNU C libraries because some of them
59 contain conflicting prototypes for getopt. */
60 # include <stdlib.h>
61 # include <unistd.h>
62 #endif /* GNU C library. */
63
64 #include <string.h>
65
66 #ifdef VMS
67 # include <unixlib.h>
68 #endif
69
70 #ifdef _LIBC
71 # include <libintl.h>
72 #else
73 # include "gettext.h"
74 # define _(msgid) gettext (msgid)
75 #endif
76
77 #if defined _LIBC && defined USE_IN_LIBIO
78 # include <wchar.h>
79 #endif
80
81 #ifndef attribute_hidden
82 # define attribute_hidden
83 #endif
84
85 /* This version of `getopt' appears to the caller like standard Unix `getopt'
86 but it behaves differently for the user, since it allows the user
87 to intersperse the options with the other arguments.
88
89 As `getopt' works, it permutes the elements of ARGV so that,
90 when it is done, all the options precede everything else. Thus
91 all application programs are extended to handle flexible argument order.
92
93 Setting the environment variable POSIXLY_CORRECT disables permutation.
94 Then the behavior is completely standard.
95
96 GNU application programs can use a third alternative mode in which
97 they can distinguish the relative order of options and other arguments. */
98
99 #include "getopt.h"
100 #include "getopt_int.h"
101
102 /* For communication from `getopt' to the caller.
103 When `getopt' finds an option that takes an argument,
104 the argument value is returned here.
105 Also, when `ordering' is RETURN_IN_ORDER,
106 each non-option ARGV-element is returned here. */
107
108 char *optarg;
109
110 /* Index in ARGV of the next element to be scanned.
111 This is used for communication to and from the caller
112 and for communication between successive calls to `getopt'.
113
114 On entry to `getopt', zero means this is the first call; initialize.
115
116 When `getopt' returns -1, this is the index of the first of the
117 non-option elements that the caller should itself scan.
118
119 Otherwise, `optind' communicates from one call to the next
120 how much of ARGV has been scanned so far. */
121
122 /* 1003.2 says this must be 1 before any call. */
123 int optind = 1;
124
125 /* Callers store zero here to inhibit the error message
126 for unrecognized options. */
127
128 int opterr = 1;
129
130 /* Set to an option character which was unrecognized.
131 This must be initialized on some systems to avoid linking in the
132 system's own getopt implementation. */
133
134 int optopt = '?';
135
136 /* Keep a global copy of all internal members of getopt_data. */
137
138 static struct _getopt_data getopt_data;
139
140 \f
141 #ifndef __GNU_LIBRARY__
142
143 /* Avoid depending on library functions or files
144 whose names are inconsistent. */
145
146 #ifndef getenv
147 extern char *getenv ();
148 #endif
149
150 #endif /* not __GNU_LIBRARY__ */
151 \f
152 #ifdef _LIBC
153 /* Stored original parameters.
154 XXX This is no good solution. We should rather copy the args so
155 that we can compare them later. But we must not use malloc(3). */
156 extern int __libc_argc;
157 extern char **__libc_argv;
158
159 /* Bash 2.0 gives us an environment variable containing flags
160 indicating ARGV elements that should not be considered arguments. */
161
162 # ifdef USE_NONOPTION_FLAGS
163 /* Defined in getopt_init.c */
164 extern char *__getopt_nonoption_flags;
165 # endif
166
167 # ifdef USE_NONOPTION_FLAGS
168 # define SWAP_FLAGS(ch1, ch2) \
169 if (d->__nonoption_flags_len > 0) \
170 { \
171 char __tmp = __getopt_nonoption_flags[ch1]; \
172 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
173 __getopt_nonoption_flags[ch2] = __tmp; \
174 }
175 # else
176 # define SWAP_FLAGS(ch1, ch2)
177 # endif
178 #else /* !_LIBC */
179 # define SWAP_FLAGS(ch1, ch2)
180 #endif /* _LIBC */
181
182 /* Exchange two adjacent subsequences of ARGV.
183 One subsequence is elements [first_nonopt,last_nonopt)
184 which contains all the non-options that have been skipped so far.
185 The other is elements [last_nonopt,optind), which contains all
186 the options processed since those non-options were skipped.
187
188 `first_nonopt' and `last_nonopt' are relocated so that they describe
189 the new indices of the non-options in ARGV after they are moved. */
190
191 static void
192 exchange (char **argv, struct _getopt_data *d)
193 {
194 int bottom = d->__first_nonopt;
195 int middle = d->__last_nonopt;
196 int top = d->optind;
197 char *tem;
198
199 /* Exchange the shorter segment with the far end of the longer segment.
200 That puts the shorter segment into the right place.
201 It leaves the longer segment in the right place overall,
202 but it consists of two parts that need to be swapped next. */
203
204 #if defined _LIBC && defined USE_NONOPTION_FLAGS
205 /* First make sure the handling of the `__getopt_nonoption_flags'
206 string can work normally. Our top argument must be in the range
207 of the string. */
208 if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len)
209 {
210 /* We must extend the array. The user plays games with us and
211 presents new arguments. */
212 char *new_str = malloc (top + 1);
213 if (new_str == NULL)
214 d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;
215 else
216 {
217 memset (__mempcpy (new_str, __getopt_nonoption_flags,
218 d->__nonoption_flags_max_len),
219 '\0', top + 1 - d->__nonoption_flags_max_len);
220 d->__nonoption_flags_max_len = top + 1;
221 __getopt_nonoption_flags = new_str;
222 }
223 }
224 #endif
225
226 while (top > middle && middle > bottom)
227 {
228 if (top - middle > middle - bottom)
229 {
230 /* Bottom segment is the short one. */
231 int len = middle - bottom;
232 register int i;
233
234 /* Swap it with the top part of the top segment. */
235 for (i = 0; i < len; i++)
236 {
237 tem = argv[bottom + i];
238 argv[bottom + i] = argv[top - (middle - bottom) + i];
239 argv[top - (middle - bottom) + i] = tem;
240 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
241 }
242 /* Exclude the moved bottom segment from further swapping. */
243 top -= len;
244 }
245 else
246 {
247 /* Top segment is the short one. */
248 int len = top - middle;
249 register int i;
250
251 /* Swap it with the bottom part of the bottom segment. */
252 for (i = 0; i < len; i++)
253 {
254 tem = argv[bottom + i];
255 argv[bottom + i] = argv[middle + i];
256 argv[middle + i] = tem;
257 SWAP_FLAGS (bottom + i, middle + i);
258 }
259 /* Exclude the moved top segment from further swapping. */
260 bottom += len;
261 }
262 }
263
264 /* Update records for the slots the non-options now occupy. */
265
266 d->__first_nonopt += (d->optind - d->__last_nonopt);
267 d->__last_nonopt = d->optind;
268 }
269
270 /* Initialize the internal data when the first call is made. */
271
272 static const char *
273 _getopt_initialize (int argc, char *const *argv, const char *optstring,
274 struct _getopt_data *d, int posixly_correct)
275 {
276 /* Start processing options with ARGV-element 1 (since ARGV-element 0
277 is the program name); the sequence of previously skipped
278 non-option ARGV-elements is empty. */
279
280 d->__first_nonopt = d->__last_nonopt = d->optind;
281
282 d->__nextchar = NULL;
283
284 d->__posixly_correct = posixly_correct | !!getenv ("POSIXLY_CORRECT");
285
286 /* Determine how to handle the ordering of options and nonoptions. */
287
288 if (optstring[0] == '-')
289 {
290 d->__ordering = RETURN_IN_ORDER;
291 ++optstring;
292 }
293 else if (optstring[0] == '+')
294 {
295 d->__ordering = REQUIRE_ORDER;
296 ++optstring;
297 }
298 else if (d->__posixly_correct)
299 d->__ordering = REQUIRE_ORDER;
300 else
301 d->__ordering = PERMUTE;
302
303 #if defined _LIBC && defined USE_NONOPTION_FLAGS
304 if (!d->__posixly_correct
305 && argc == __libc_argc && argv == __libc_argv)
306 {
307 if (d->__nonoption_flags_max_len == 0)
308 {
309 if (__getopt_nonoption_flags == NULL
310 || __getopt_nonoption_flags[0] == '\0')
311 d->__nonoption_flags_max_len = -1;
312 else
313 {
314 const char *orig_str = __getopt_nonoption_flags;
315 int len = d->__nonoption_flags_max_len = strlen (orig_str);
316 if (d->__nonoption_flags_max_len < argc)
317 d->__nonoption_flags_max_len = argc;
318 __getopt_nonoption_flags =
319 (char *) malloc (d->__nonoption_flags_max_len);
320 if (__getopt_nonoption_flags == NULL)
321 d->__nonoption_flags_max_len = -1;
322 else
323 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
324 '\0', d->__nonoption_flags_max_len - len);
325 }
326 }
327 d->__nonoption_flags_len = d->__nonoption_flags_max_len;
328 }
329 else
330 d->__nonoption_flags_len = 0;
331 #endif
332
333 return optstring;
334 }
335 \f
336 /* Scan elements of ARGV (whose length is ARGC) for option characters
337 given in OPTSTRING.
338
339 If an element of ARGV starts with '-', and is not exactly "-" or "--",
340 then it is an option element. The characters of this element
341 (aside from the initial '-') are option characters. If `getopt'
342 is called repeatedly, it returns successively each of the option characters
343 from each of the option elements.
344
345 If `getopt' finds another option character, it returns that character,
346 updating `optind' and `nextchar' so that the next call to `getopt' can
347 resume the scan with the following option character or ARGV-element.
348
349 If there are no more option characters, `getopt' returns -1.
350 Then `optind' is the index in ARGV of the first ARGV-element
351 that is not an option. (The ARGV-elements have been permuted
352 so that those that are not options now come last.)
353
354 OPTSTRING is a string containing the legitimate option characters.
355 If an option character is seen that is not listed in OPTSTRING,
356 return '?' after printing an error message. If you set `opterr' to
357 zero, the error message is suppressed but we still return '?'.
358
359 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
360 so the following text in the same ARGV-element, or the text of the following
361 ARGV-element, is returned in `optarg'. Two colons mean an option that
362 wants an optional arg; if there is text in the current ARGV-element,
363 it is returned in `optarg', otherwise `optarg' is set to zero.
364
365 If OPTSTRING starts with `-' or `+', it requests different methods of
366 handling the non-option ARGV-elements.
367 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
368
369 Long-named options begin with `--' instead of `-'.
370 Their names may be abbreviated as long as the abbreviation is unique
371 or is an exact match for some defined option. If they have an
372 argument, it follows the option name in the same ARGV-element, separated
373 from the option name by a `=', or else the in next ARGV-element.
374 When `getopt' finds a long-named option, it returns 0 if that option's
375 `flag' field is nonzero, the value of the option's `val' field
376 if the `flag' field is zero.
377
378 The elements of ARGV aren't really const, because we permute them.
379 But we pretend they're const in the prototype to be compatible
380 with other systems.
381
382 LONGOPTS is a vector of `struct option' terminated by an
383 element containing a name which is zero.
384
385 LONGIND returns the index in LONGOPT of the long-named option found.
386 It is only valid when a long-named option has been found by the most
387 recent call.
388
389 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
390 long-named options. */
391
392 int
393 _getopt_internal_r (int argc, char *const *argv, const char *optstring,
394 const struct option *longopts, int *longind,
395 int long_only, struct _getopt_data *d, int posixly_correct)
396 {
397 int print_errors = d->opterr;
398
399 if (argc < 1)
400 return -1;
401
402 d->optarg = NULL;
403
404 if (d->optind == 0 || !d->__initialized)
405 {
406 if (d->optind == 0)
407 d->optind = 1; /* Don't scan ARGV[0], the program name. */
408 optstring = _getopt_initialize (argc, argv, optstring, d,
409 posixly_correct);
410 d->__initialized = 1;
411 }
412 else if (optstring[0] == '-' || optstring[0] == '+')
413 optstring++;
414 if (optstring[0] == ':')
415 print_errors = 0;
416
417 /* Test whether ARGV[optind] points to a non-option argument.
418 Either it does not have option syntax, or there is an environment flag
419 from the shell indicating it is not an option. The later information
420 is only used when the used in the GNU libc. */
421 #if defined _LIBC && defined USE_NONOPTION_FLAGS
422 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
423 || (d->optind < d->__nonoption_flags_len \
424 && __getopt_nonoption_flags[d->optind] == '1'))
425 #else
426 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
427 #endif
428
429 if (d->__nextchar == NULL || *d->__nextchar == '\0')
430 {
431 /* Advance to the next ARGV-element. */
432
433 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
434 moved back by the user (who may also have changed the arguments). */
435 if (d->__last_nonopt > d->optind)
436 d->__last_nonopt = d->optind;
437 if (d->__first_nonopt > d->optind)
438 d->__first_nonopt = d->optind;
439
440 if (d->__ordering == PERMUTE)
441 {
442 /* If we have just processed some options following some non-options,
443 exchange them so that the options come first. */
444
445 if (d->__first_nonopt != d->__last_nonopt
446 && d->__last_nonopt != d->optind)
447 exchange ((char **) argv, d);
448 else if (d->__last_nonopt != d->optind)
449 d->__first_nonopt = d->optind;
450
451 /* Skip any additional non-options
452 and extend the range of non-options previously skipped. */
453
454 while (d->optind < argc && NONOPTION_P)
455 d->optind++;
456 d->__last_nonopt = d->optind;
457 }
458
459 /* The special ARGV-element `--' means premature end of options.
460 Skip it like a null option,
461 then exchange with previous non-options as if it were an option,
462 then skip everything else like a non-option. */
463
464 if (d->optind != argc && !strcmp (argv[d->optind], "--"))
465 {
466 d->optind++;
467
468 if (d->__first_nonopt != d->__last_nonopt
469 && d->__last_nonopt != d->optind)
470 exchange ((char **) argv, d);
471 else if (d->__first_nonopt == d->__last_nonopt)
472 d->__first_nonopt = d->optind;
473 d->__last_nonopt = argc;
474
475 d->optind = argc;
476 }
477
478 /* If we have done all the ARGV-elements, stop the scan
479 and back over any non-options that we skipped and permuted. */
480
481 if (d->optind == argc)
482 {
483 /* Set the next-arg-index to point at the non-options
484 that we previously skipped, so the caller will digest them. */
485 if (d->__first_nonopt != d->__last_nonopt)
486 d->optind = d->__first_nonopt;
487 return -1;
488 }
489
490 /* If we have come to a non-option and did not permute it,
491 either stop the scan or describe it to the caller and pass it by. */
492
493 if (NONOPTION_P)
494 {
495 if (d->__ordering == REQUIRE_ORDER)
496 return -1;
497 d->optarg = argv[d->optind++];
498 return 1;
499 }
500
501 /* We have found another option-ARGV-element.
502 Skip the initial punctuation. */
503
504 d->__nextchar = (argv[d->optind] + 1
505 + (longopts != NULL && argv[d->optind][1] == '-'));
506 }
507
508 /* Decode the current option-ARGV-element. */
509
510 /* Check whether the ARGV-element is a long option.
511
512 If long_only and the ARGV-element has the form "-f", where f is
513 a valid short option, don't consider it an abbreviated form of
514 a long option that starts with f. Otherwise there would be no
515 way to give the -f short option.
516
517 On the other hand, if there's a long option "fubar" and
518 the ARGV-element is "-fu", do consider that an abbreviation of
519 the long option, just like "--fu", and not "-f" with arg "u".
520
521 This distinction seems to be the most useful approach. */
522
523 if (longopts != NULL
524 && (argv[d->optind][1] == '-'
525 || (long_only && (argv[d->optind][2]
526 || !strchr (optstring, argv[d->optind][1])))))
527 {
528 char *nameend;
529 const struct option *p;
530 const struct option *pfound = NULL;
531 int exact = 0;
532 int ambig = 0;
533 int indfound = -1;
534 int option_index;
535
536 for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
537 /* Do nothing. */ ;
538
539 /* Test all long options for either exact match
540 or abbreviated matches. */
541 for (p = longopts, option_index = 0; p->name; p++, option_index++)
542 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
543 {
544 if ((unsigned int) (nameend - d->__nextchar)
545 == (unsigned int) strlen (p->name))
546 {
547 /* Exact match found. */
548 pfound = p;
549 indfound = option_index;
550 exact = 1;
551 break;
552 }
553 else if (pfound == NULL)
554 {
555 /* First nonexact match found. */
556 pfound = p;
557 indfound = option_index;
558 }
559 else if (long_only
560 || pfound->has_arg != p->has_arg
561 || pfound->flag != p->flag
562 || pfound->val != p->val)
563 /* Second or later nonexact match found. */
564 ambig = 1;
565 }
566
567 if (ambig && !exact)
568 {
569 if (print_errors)
570 {
571 #if defined _LIBC && defined USE_IN_LIBIO
572 char *buf;
573
574 if (__asprintf (&buf, _("%s: option '%s' is ambiguous\n"),
575 argv[0], argv[d->optind]) >= 0)
576 {
577 _IO_flockfile (stderr);
578
579 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
580 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
581
582 __fxprintf (NULL, "%s", buf);
583
584 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
585 _IO_funlockfile (stderr);
586
587 free (buf);
588 }
589 #else
590 fprintf (stderr, _("%s: option '%s' is ambiguous\n"),
591 argv[0], argv[d->optind]);
592 #endif
593 }
594 d->__nextchar += strlen (d->__nextchar);
595 d->optind++;
596 d->optopt = 0;
597 return '?';
598 }
599
600 if (pfound != NULL)
601 {
602 option_index = indfound;
603 d->optind++;
604 if (*nameend)
605 {
606 /* Don't test has_arg with >, because some C compilers don't
607 allow it to be used on enums. */
608 if (pfound->has_arg)
609 d->optarg = nameend + 1;
610 else
611 {
612 if (print_errors)
613 {
614 #if defined _LIBC && defined USE_IN_LIBIO
615 char *buf;
616 int n;
617 #endif
618
619 if (argv[d->optind - 1][1] == '-')
620 {
621 /* --option */
622 #if defined _LIBC && defined USE_IN_LIBIO
623 n = __asprintf (&buf, _("\
624 %s: option '--%s' doesn't allow an argument\n"),
625 argv[0], pfound->name);
626 #else
627 fprintf (stderr, _("\
628 %s: option '--%s' doesn't allow an argument\n"),
629 argv[0], pfound->name);
630 #endif
631 }
632 else
633 {
634 /* +option or -option */
635 #if defined _LIBC && defined USE_IN_LIBIO
636 n = __asprintf (&buf, _("\
637 %s: option '%c%s' doesn't allow an argument\n"),
638 argv[0], argv[d->optind - 1][0],
639 pfound->name);
640 #else
641 fprintf (stderr, _("\
642 %s: option '%c%s' doesn't allow an argument\n"),
643 argv[0], argv[d->optind - 1][0],
644 pfound->name);
645 #endif
646 }
647
648 #if defined _LIBC && defined USE_IN_LIBIO
649 if (n >= 0)
650 {
651 _IO_flockfile (stderr);
652
653 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
654 ((_IO_FILE *) stderr)->_flags2
655 |= _IO_FLAGS2_NOTCANCEL;
656
657 __fxprintf (NULL, "%s", buf);
658
659 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
660 _IO_funlockfile (stderr);
661
662 free (buf);
663 }
664 #endif
665 }
666
667 d->__nextchar += strlen (d->__nextchar);
668
669 d->optopt = pfound->val;
670 return '?';
671 }
672 }
673 else if (pfound->has_arg == 1)
674 {
675 if (d->optind < argc)
676 d->optarg = argv[d->optind++];
677 else
678 {
679 if (print_errors)
680 {
681 #if defined _LIBC && defined USE_IN_LIBIO
682 char *buf;
683
684 if (__asprintf (&buf, _("\
685 %s: option '--%s' requires an argument\n"),
686 argv[0], pfound->name) >= 0)
687 {
688 _IO_flockfile (stderr);
689
690 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
691 ((_IO_FILE *) stderr)->_flags2
692 |= _IO_FLAGS2_NOTCANCEL;
693
694 __fxprintf (NULL, "%s", buf);
695
696 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
697 _IO_funlockfile (stderr);
698
699 free (buf);
700 }
701 #else
702 fprintf (stderr,
703 _("%s: option '--%s' requires an argument\n"),
704 argv[0], pfound->name);
705 #endif
706 }
707 d->__nextchar += strlen (d->__nextchar);
708 d->optopt = pfound->val;
709 return optstring[0] == ':' ? ':' : '?';
710 }
711 }
712 d->__nextchar += strlen (d->__nextchar);
713 if (longind != NULL)
714 *longind = option_index;
715 if (pfound->flag)
716 {
717 *(pfound->flag) = pfound->val;
718 return 0;
719 }
720 return pfound->val;
721 }
722
723 /* Can't find it as a long option. If this is not getopt_long_only,
724 or the option starts with '--' or is not a valid short
725 option, then it's an error.
726 Otherwise interpret it as a short option. */
727 if (!long_only || argv[d->optind][1] == '-'
728 || strchr (optstring, *d->__nextchar) == NULL)
729 {
730 if (print_errors)
731 {
732 #if defined _LIBC && defined USE_IN_LIBIO
733 char *buf;
734 int n;
735 #endif
736
737 if (argv[d->optind][1] == '-')
738 {
739 /* --option */
740 #if defined _LIBC && defined USE_IN_LIBIO
741 n = __asprintf (&buf, _("%s: unrecognized option '--%s'\n"),
742 argv[0], d->__nextchar);
743 #else
744 fprintf (stderr, _("%s: unrecognized option '--%s'\n"),
745 argv[0], d->__nextchar);
746 #endif
747 }
748 else
749 {
750 /* +option or -option */
751 #if defined _LIBC && defined USE_IN_LIBIO
752 n = __asprintf (&buf, _("%s: unrecognized option '%c%s'\n"),
753 argv[0], argv[d->optind][0], d->__nextchar);
754 #else
755 fprintf (stderr, _("%s: unrecognized option '%c%s'\n"),
756 argv[0], argv[d->optind][0], d->__nextchar);
757 #endif
758 }
759
760 #if defined _LIBC && defined USE_IN_LIBIO
761 if (n >= 0)
762 {
763 _IO_flockfile (stderr);
764
765 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
766 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
767
768 __fxprintf (NULL, "%s", buf);
769
770 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
771 _IO_funlockfile (stderr);
772
773 free (buf);
774 }
775 #endif
776 }
777 d->__nextchar = (char *) "";
778 d->optind++;
779 d->optopt = 0;
780 return '?';
781 }
782 }
783
784 /* Look at and handle the next short option-character. */
785
786 {
787 char c = *d->__nextchar++;
788 char *temp = strchr (optstring, c);
789
790 /* Increment `optind' when we start to process its last character. */
791 if (*d->__nextchar == '\0')
792 ++d->optind;
793
794 if (temp == NULL || c == ':' || c == ';')
795 {
796 if (print_errors)
797 {
798 #if defined _LIBC && defined USE_IN_LIBIO
799 char *buf;
800 int n;
801 #endif
802
803 #if defined _LIBC && defined USE_IN_LIBIO
804 n = __asprintf (&buf, _("%s: invalid option -- '%c'\n"),
805 argv[0], c);
806 #else
807 fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c);
808 #endif
809
810 #if defined _LIBC && defined USE_IN_LIBIO
811 if (n >= 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 #endif
826 }
827 d->optopt = c;
828 return '?';
829 }
830 /* Convenience. Treat POSIX -W foo same as long option --foo */
831 if (temp[0] == 'W' && temp[1] == ';')
832 {
833 char *nameend;
834 const struct option *p;
835 const struct option *pfound = NULL;
836 int exact = 0;
837 int ambig = 0;
838 int indfound = 0;
839 int option_index;
840
841 /* This is an option that requires an argument. */
842 if (*d->__nextchar != '\0')
843 {
844 d->optarg = d->__nextchar;
845 /* If we end this ARGV-element by taking the rest as an arg,
846 we must advance to the next element now. */
847 d->optind++;
848 }
849 else if (d->optind == argc)
850 {
851 if (print_errors)
852 {
853 #if defined _LIBC && defined USE_IN_LIBIO
854 char *buf;
855
856 if (__asprintf (&buf,
857 _("%s: option requires an argument -- '%c'\n"),
858 argv[0], c) >= 0)
859 {
860 _IO_flockfile (stderr);
861
862 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
863 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
864
865 __fxprintf (NULL, "%s", buf);
866
867 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
868 _IO_funlockfile (stderr);
869
870 free (buf);
871 }
872 #else
873 fprintf (stderr,
874 _("%s: option requires an argument -- '%c'\n"),
875 argv[0], c);
876 #endif
877 }
878 d->optopt = c;
879 if (optstring[0] == ':')
880 c = ':';
881 else
882 c = '?';
883 return c;
884 }
885 else
886 /* We already incremented `d->optind' once;
887 increment it again when taking next ARGV-elt as argument. */
888 d->optarg = argv[d->optind++];
889
890 /* optarg is now the argument, see if it's in the
891 table of longopts. */
892
893 for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
894 nameend++)
895 /* Do nothing. */ ;
896
897 /* Test all long options for either exact match
898 or abbreviated matches. */
899 for (p = longopts, option_index = 0; p->name; p++, option_index++)
900 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
901 {
902 if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name))
903 {
904 /* Exact match found. */
905 pfound = p;
906 indfound = option_index;
907 exact = 1;
908 break;
909 }
910 else if (pfound == NULL)
911 {
912 /* First nonexact match found. */
913 pfound = p;
914 indfound = option_index;
915 }
916 else if (long_only
917 || pfound->has_arg != p->has_arg
918 || pfound->flag != p->flag
919 || pfound->val != p->val)
920 /* Second or later nonexact match found. */
921 ambig = 1;
922 }
923 if (ambig && !exact)
924 {
925 if (print_errors)
926 {
927 #if defined _LIBC && defined USE_IN_LIBIO
928 char *buf;
929
930 if (__asprintf (&buf, _("%s: option '-W %s' is ambiguous\n"),
931 argv[0], d->optarg) >= 0)
932 {
933 _IO_flockfile (stderr);
934
935 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
936 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
937
938 __fxprintf (NULL, "%s", buf);
939
940 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
941 _IO_funlockfile (stderr);
942
943 free (buf);
944 }
945 #else
946 fprintf (stderr, _("%s: option '-W %s' is ambiguous\n"),
947 argv[0], d->optarg);
948 #endif
949 }
950 d->__nextchar += strlen (d->__nextchar);
951 d->optind++;
952 return '?';
953 }
954 if (pfound != NULL)
955 {
956 option_index = indfound;
957 if (*nameend)
958 {
959 /* Don't test has_arg with >, because some C compilers don't
960 allow it to be used on enums. */
961 if (pfound->has_arg)
962 d->optarg = nameend + 1;
963 else
964 {
965 if (print_errors)
966 {
967 #if defined _LIBC && defined USE_IN_LIBIO
968 char *buf;
969
970 if (__asprintf (&buf, _("\
971 %s: option '-W %s' doesn't allow an argument\n"),
972 argv[0], pfound->name) >= 0)
973 {
974 _IO_flockfile (stderr);
975
976 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
977 ((_IO_FILE *) stderr)->_flags2
978 |= _IO_FLAGS2_NOTCANCEL;
979
980 __fxprintf (NULL, "%s", buf);
981
982 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
983 _IO_funlockfile (stderr);
984
985 free (buf);
986 }
987 #else
988 fprintf (stderr, _("\
989 %s: option '-W %s' doesn't allow an argument\n"),
990 argv[0], pfound->name);
991 #endif
992 }
993
994 d->__nextchar += strlen (d->__nextchar);
995 return '?';
996 }
997 }
998 else if (pfound->has_arg == 1)
999 {
1000 if (d->optind < argc)
1001 d->optarg = argv[d->optind++];
1002 else
1003 {
1004 if (print_errors)
1005 {
1006 #if defined _LIBC && defined USE_IN_LIBIO
1007 char *buf;
1008
1009 if (__asprintf (&buf, _("\
1010 %s: option '-W %s' requires an argument\n"),
1011 argv[0], pfound->name) >= 0)
1012 {
1013 _IO_flockfile (stderr);
1014
1015 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1016 ((_IO_FILE *) stderr)->_flags2
1017 |= _IO_FLAGS2_NOTCANCEL;
1018
1019 __fxprintf (NULL, "%s", buf);
1020
1021 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1022 _IO_funlockfile (stderr);
1023
1024 free (buf);
1025 }
1026 #else
1027 fprintf (stderr, _("\
1028 %s: option '-W %s' requires an argument\n"),
1029 argv[0], pfound->name);
1030 #endif
1031 }
1032 d->__nextchar += strlen (d->__nextchar);
1033 return optstring[0] == ':' ? ':' : '?';
1034 }
1035 }
1036 else
1037 d->optarg = NULL;
1038 d->__nextchar += strlen (d->__nextchar);
1039 if (longind != NULL)
1040 *longind = option_index;
1041 if (pfound->flag)
1042 {
1043 *(pfound->flag) = pfound->val;
1044 return 0;
1045 }
1046 return pfound->val;
1047 }
1048 d->__nextchar = NULL;
1049 return 'W'; /* Let the application handle it. */
1050 }
1051 if (temp[1] == ':')
1052 {
1053 if (temp[2] == ':')
1054 {
1055 /* This is an option that accepts an argument optionally. */
1056 if (*d->__nextchar != '\0')
1057 {
1058 d->optarg = d->__nextchar;
1059 d->optind++;
1060 }
1061 else
1062 d->optarg = NULL;
1063 d->__nextchar = NULL;
1064 }
1065 else
1066 {
1067 /* This is an option that requires an argument. */
1068 if (*d->__nextchar != '\0')
1069 {
1070 d->optarg = d->__nextchar;
1071 /* If we end this ARGV-element by taking the rest as an arg,
1072 we must advance to the next element now. */
1073 d->optind++;
1074 }
1075 else if (d->optind == argc)
1076 {
1077 if (print_errors)
1078 {
1079 #if defined _LIBC && defined USE_IN_LIBIO
1080 char *buf;
1081
1082 if (__asprintf (&buf, _("\
1083 %s: option requires an argument -- '%c'\n"),
1084 argv[0], c) >= 0)
1085 {
1086 _IO_flockfile (stderr);
1087
1088 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1089 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1090
1091 __fxprintf (NULL, "%s", buf);
1092
1093 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1094 _IO_funlockfile (stderr);
1095
1096 free (buf);
1097 }
1098 #else
1099 fprintf (stderr,
1100 _("%s: option requires an argument -- '%c'\n"),
1101 argv[0], c);
1102 #endif
1103 }
1104 d->optopt = c;
1105 if (optstring[0] == ':')
1106 c = ':';
1107 else
1108 c = '?';
1109 }
1110 else
1111 /* We already incremented `optind' once;
1112 increment it again when taking next ARGV-elt as argument. */
1113 d->optarg = argv[d->optind++];
1114 d->__nextchar = NULL;
1115 }
1116 }
1117 return c;
1118 }
1119 }
1120
1121 int
1122 _getopt_internal (int argc, char *const *argv, const char *optstring,
1123 const struct option *longopts, int *longind, int long_only,
1124 int posixly_correct)
1125 {
1126 int result;
1127
1128 getopt_data.optind = optind;
1129 getopt_data.opterr = opterr;
1130
1131 result = _getopt_internal_r (argc, argv, optstring, longopts,
1132 longind, long_only, &getopt_data,
1133 posixly_correct);
1134
1135 optind = getopt_data.optind;
1136 optarg = getopt_data.optarg;
1137 optopt = getopt_data.optopt;
1138
1139 return result;
1140 }
1141
1142 int
1143 getopt (int argc, char *const *argv, const char *optstring)
1144 {
1145 return _getopt_internal (argc, argv, optstring,
1146 (const struct option *) 0,
1147 (int *) 0,
1148 0, 0);
1149 }
1150
1151 #ifdef _LIBC
1152 int
1153 __posix_getopt (int argc, char *const *argv, const char *optstring)
1154 {
1155 return _getopt_internal (argc, argv, optstring,
1156 (const struct option *) 0,
1157 (int *) 0,
1158 0, 1);
1159 }
1160 #endif
1161
1162 #endif /* Not ELIDE_CODE. */
1163 \f
1164 #ifdef TEST
1165
1166 /* Compile with -DTEST to make an executable for use in testing
1167 the above definition of `getopt'. */
1168
1169 int
1170 main (int argc, char **argv)
1171 {
1172 int c;
1173 int digit_optind = 0;
1174
1175 while (1)
1176 {
1177 int this_option_optind = optind ? optind : 1;
1178
1179 c = getopt (argc, argv, "abc:d:0123456789");
1180 if (c == -1)
1181 break;
1182
1183 switch (c)
1184 {
1185 case '0':
1186 case '1':
1187 case '2':
1188 case '3':
1189 case '4':
1190 case '5':
1191 case '6':
1192 case '7':
1193 case '8':
1194 case '9':
1195 if (digit_optind != 0 && digit_optind != this_option_optind)
1196 printf ("digits occur in two different argv-elements.\n");
1197 digit_optind = this_option_optind;
1198 printf ("option %c\n", c);
1199 break;
1200
1201 case 'a':
1202 printf ("option a\n");
1203 break;
1204
1205 case 'b':
1206 printf ("option b\n");
1207 break;
1208
1209 case 'c':
1210 printf ("option c with value '%s'\n", optarg);
1211 break;
1212
1213 case '?':
1214 break;
1215
1216 default:
1217 printf ("?? getopt returned character code 0%o ??\n", c);
1218 }
1219 }
1220
1221 if (optind < argc)
1222 {
1223 printf ("non-option ARGV-elements: ");
1224 while (optind < argc)
1225 printf ("%s ", argv[optind++]);
1226 printf ("\n");
1227 }
1228
1229 exit (0);
1230 }
1231
1232 #endif /* TEST */