1 /* Getopt for GNU.
2 NOTE: getopt is now 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) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001,2002
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., 51 Franklin St, Fifth Floor, Boston,
22 MA 02110-1301, USA */
23
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 #define HAVE_CONFIG_H /* needed for Wine */
31
32 #ifdef HAVE_CONFIG_H
33 # include <config.h>
34 #endif
35
36 #ifdef HAVE_GETOPT_LONG
37 #define ELIDE_CODE
38 #endif
39
40 #if !defined __STDC__ || !__STDC__
41 /* This is a separate conditional since some stdc systems
42 reject `defined (const)'. */
43 # ifndef const
44 # define const
45 # endif
46 #endif
47
48 #include <stdio.h>
49
50 /* Comment out all this code if we are using the GNU C Library, and are not
51 actually compiling the library itself. This code is part of the GNU C
52 Library, but also included in many other GNU distributions. Compiling
53 and linking in this code is a waste when using the GNU C library
54 (especially if it is a shared library). Rather than having every GNU
55 program understand `configure --with-gnu-libc' and omit the object files,
56 it is simpler to just do this in the source for each such file. */
57
58 #define GETOPT_INTERFACE_VERSION 2
59 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
60 # include <gnu-versions.h>
61 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
62 # define ELIDE_CODE
63 # endif
64 #endif
65
66 #ifndef ELIDE_CODE
67
68
69 /* This needs to come after some library #include
70 to get __GNU_LIBRARY__ defined. */
71 #ifdef __GNU_LIBRARY__
72 /* Don't include stdlib.h for non-GNU C libraries because some of them
73 contain conflicting prototypes for getopt. */
74 # include <stdlib.h>
75 # include <unistd.h>
76 #endif /* GNU C library. */
77
78 #ifdef VMS
79 # include <unixlib.h>
80 # ifdef HAVE_STRING_H
81 # include <string.h>
82 # endif
83 #endif
84
85 #ifndef _
86 /* This is for other GNU distributions with internationalized messages. */
87 # if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
88 # include <libintl.h>
89 # ifndef _
90 # define _(msgid) gettext (msgid)
91 # endif
92 # else
93 # define _(msgid) (msgid)
94 # endif
95 # if defined _LIBC && defined USE_IN_LIBIO
96 # include <wchar.h>
97 # endif
98 #endif
99
100 #ifndef attribute_hidden
101 # define attribute_hidden
102 #endif
103
104 /* This version of `getopt' appears to the caller like standard Unix `getopt'
105 but it behaves differently for the user, since it allows the user
106 to intersperse the options with the other arguments.
107
108 As `getopt' works, it permutes the elements of ARGV so that,
109 when it is done, all the options precede everything else. Thus
110 all application programs are extended to handle flexible argument order.
111
112 Setting the environment variable POSIXLY_CORRECT disables permutation.
113 Then the behavior is completely standard.
114
115 GNU application programs can use a third alternative mode in which
116 they can distinguish the relative order of options and other arguments. */
117
118 #include "getopt.h"
119
120 /* For communication from `getopt' to the caller.
121 When `getopt' finds an option that takes an argument,
122 the argument value is returned here.
123 Also, when `ordering' is RETURN_IN_ORDER,
124 each non-option ARGV-element is returned here. */
125
126 char *optarg;
127
128 /* Index in ARGV of the next element to be scanned.
129 This is used for communication to and from the caller
130 and for communication between successive calls to `getopt'.
131
132 On entry to `getopt', zero means this is the first call; initialize.
133
134 When `getopt' returns -1, this is the index of the first of the
135 non-option elements that the caller should itself scan.
136
137 Otherwise, `optind' communicates from one call to the next
138 how much of ARGV has been scanned so far. */
139
140 /* 1003.2 says this must be 1 before any call. */
141 int optind = 1;
142
143 /* Formerly, initialization of getopt depended on optind==0, which
144 causes problems with re-calling getopt as programs generally don't
145 know that. */
146
147 int __getopt_initialized attribute_hidden;
148
149 /* The next char to be scanned in the option-element
150 in which the last option character we returned was found.
151 This allows us to pick up the scan where we left off.
152
153 If this is zero, or a null string, it means resume the scan
154 by advancing to the next ARGV-element. */
155
156 static char *nextchar;
157
158 /* Callers store zero here to inhibit the error message
159 for unrecognized options. */
160
161 int opterr = 1;
162
163 /* Set to an option character which was unrecognized.
164 This must be initialized on some systems to avoid linking in the
165 system's own getopt implementation. */
166
167 int optopt = '?';
168
169 /* Describe how to deal with options that follow non-option ARGV-elements.
170
171 If the caller did not specify anything,
172 the default is REQUIRE_ORDER if the environment variable
173 POSIXLY_CORRECT is defined, PERMUTE otherwise.
174
175 REQUIRE_ORDER means don't recognize them as options;
176 stop option processing when the first non-option is seen.
177 This is what Unix does.
178 This mode of operation is selected by either setting the environment
179 variable POSIXLY_CORRECT, or using `+' as the first character
180 of the list of option characters.
181
182 PERMUTE is the default. We permute the contents of ARGV as we scan,
183 so that eventually all the non-options are at the end. This allows options
184 to be given in any order, even with programs that were not written to
185 expect this.
186
187 RETURN_IN_ORDER is an option available to programs that were written
188 to expect options and other ARGV-elements in any order and that care about
189 the ordering of the two. We describe each non-option ARGV-element
190 as if it were the argument of an option with character code 1.
191 Using `-' as the first character of the list of option characters
192 selects this mode of operation.
193
194 The special argument `--' forces an end of option-scanning regardless
195 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
196 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
197
198 static enum
199 {
200 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
201 } ordering;
202
203 /* Value of POSIXLY_CORRECT environment variable. */
204 static char *posixly_correct;
205
206 #ifdef __GNU_LIBRARY__
207 /* We want to avoid inclusion of string.h with non-GNU libraries
208 because there are many ways it can cause trouble.
209 On some systems, it contains special magic macros that don't work
210 in GCC. */
211 # include <string.h>
212 # define my_index strchr
213 #else
214
215 # ifdef HAVE_STRING_H
216 # include <string.h>
217 # else
218 # include <strings.h>
219 # endif
220
221 /* Avoid depending on library functions or files
222 whose names are inconsistent. */
223
224 #ifndef getenv
225 extern char *getenv ();
226 #endif
227
228 static char *
229 my_index (str, chr)
230 const char *str;
231 int chr;
232 {
233 while (*str)
234 {
235 if (*str == chr)
236 return (char *) str;
237 str++;
238 }
239 return 0;
240 }
241
242 /* If using GCC, we can safely declare strlen this way.
243 If not using GCC, it is ok not to declare it. */
244 #ifdef __GNUC__
245 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
246 That was relevant to code that was here before. */
247 # if (!defined __STDC__ || !__STDC__) && !defined strlen
248 /* gcc with -traditional declares the built-in strlen to return int,
249 and has done so at least since version 2.4.5. -- rms. */
250 extern int strlen (const char *);
251 # endif /* not __STDC__ */
252 #endif /* __GNUC__ */
253
254 #endif /* not __GNU_LIBRARY__ */
255
256 /* Handle permutation of arguments. */
257
258 /* Describe the part of ARGV that contains non-options that have
259 been skipped. `first_nonopt' is the index in ARGV of the first of them;
260 `last_nonopt' is the index after the last of them. */
261
262 static int first_nonopt;
263 static int last_nonopt;
264
265 #ifdef _LIBC
266 /* Stored original parameters.
267 XXX This is no good solution. We should rather copy the args so
268 that we can compare them later. But we must not use malloc(3). */
269 extern int __libc_argc;
270 extern char **__libc_argv;
271
272 /* Bash 2.0 gives us an environment variable containing flags
273 indicating ARGV elements that should not be considered arguments. */
274
275 # ifdef USE_NONOPTION_FLAGS
276 /* Defined in getopt_init.c */
277 extern char *__getopt_nonoption_flags;
278
279 static int nonoption_flags_max_len;
280 static int nonoption_flags_len;
281 # endif
282
283 # ifdef USE_NONOPTION_FLAGS
284 # define SWAP_FLAGS(ch1, ch2) \
285 if (nonoption_flags_len > 0) \
286 { \
287 char __tmp = __getopt_nonoption_flags[ch1]; \
288 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
289 __getopt_nonoption_flags[ch2] = __tmp; \
290 }
291 # else
292 # define SWAP_FLAGS(ch1, ch2)
293 # endif
294 #else /* !_LIBC */
295 # define SWAP_FLAGS(ch1, ch2)
296 #endif /* _LIBC */
297
298 /* Exchange two adjacent subsequences of ARGV.
299 One subsequence is elements [first_nonopt,last_nonopt)
300 which contains all the non-options that have been skipped so far.
301 The other is elements [last_nonopt,optind), which contains all
302 the options processed since those non-options were skipped.
303
304 `first_nonopt' and `last_nonopt' are relocated so that they describe
305 the new indices of the non-options in ARGV after they are moved. */
306
307 #if defined __STDC__ && __STDC__
308 static void exchange (char **);
309 #endif
310
311 static void
312 exchange (argv)
313 char **argv;
314 {
315 int bottom = first_nonopt;
316 int middle = last_nonopt;
317 int top = optind;
318 char *tem;
319
320 /* Exchange the shorter segment with the far end of the longer segment.
321 That puts the shorter segment into the right place.
322 It leaves the longer segment in the right place overall,
323 but it consists of two parts that need to be swapped next. */
324
325 #if defined _LIBC && defined USE_NONOPTION_FLAGS
326 /* First make sure the handling of the `__getopt_nonoption_flags'
327 string can work normally. Our top argument must be in the range
328 of the string. */
329 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
330 {
331 /* We must extend the array. The user plays games with us and
332 presents new arguments. */
333 char *new_str = malloc (top + 1);
334 if (new_str == NULL)
335 nonoption_flags_len = nonoption_flags_max_len = 0;
336 else
337 {
338 memset (__mempcpy (new_str, __getopt_nonoption_flags,
339 nonoption_flags_max_len),
340 '\0', top + 1 - nonoption_flags_max_len);
341 nonoption_flags_max_len = top + 1;
342 __getopt_nonoption_flags = new_str;
343 }
344 }
345 #endif
346
347 while (top > middle && middle > bottom)
348 {
349 if (top - middle > middle - bottom)
350 {
351 /* Bottom segment is the short one. */
352 int len = middle - bottom;
353 register int i;
354
355 /* Swap it with the top part of the top segment. */
356 for (i = 0; i < len; i++)
357 {
358 tem = argv[bottom + i];
359 argv[bottom + i] = argv[top - (middle - bottom) + i];
360 argv[top - (middle - bottom) + i] = tem;
361 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
362 }
363 /* Exclude the moved bottom segment from further swapping. */
364 top -= len;
365 }
366 else
367 {
368 /* Top segment is the short one. */
369 int len = top - middle;
370 register int i;
371
372 /* Swap it with the bottom part of the bottom segment. */
373 for (i = 0; i < len; i++)
374 {
375 tem = argv[bottom + i];
376 argv[bottom + i] = argv[middle + i];
377 argv[middle + i] = tem;
378 SWAP_FLAGS (bottom + i, middle + i);
379 }
380 /* Exclude the moved top segment from further swapping. */
381 bottom += len;
382 }
383 }
384
385 /* Update records for the slots the non-options now occupy. */
386
387 first_nonopt += (optind - last_nonopt);
388 last_nonopt = optind;
389 }
390
391 /* Initialize the internal data when the first call is made. */
392
393 #if defined __STDC__ && __STDC__
394 static const char *_getopt_initialize (int, char *const *, const char *);
395 #endif
396 static const char *
397 _getopt_initialize (argc, argv, optstring)
398 int argc;
399 char *const *argv;
400 const char *optstring;
401 {
402 /* Start processing options with ARGV-element 1 (since ARGV-element 0
403 is the program name); the sequence of previously skipped
404 non-option ARGV-elements is empty. */
405
406 first_nonopt = last_nonopt = optind;
407
408 nextchar = NULL;
409
410 posixly_correct = getenv ("POSIXLY_CORRECT");
411
412 /* Determine how to handle the ordering of options and nonoptions. */
413
414 if (optstring[0] == '-')
415 {
416 ordering = RETURN_IN_ORDER;
417 ++optstring;
418 }
419 else if (optstring[0] == '+')
420 {
421 ordering = REQUIRE_ORDER;
422 ++optstring;
423 }
424 else if (posixly_correct != NULL)
425 ordering = REQUIRE_ORDER;
426 else
427 ordering = PERMUTE;
428
429 #if defined _LIBC && defined USE_NONOPTION_FLAGS
430 if (posixly_correct == NULL
431 && argc == __libc_argc && argv == __libc_argv)
432 {
433 if (nonoption_flags_max_len == 0)
434 {
435 if (__getopt_nonoption_flags == NULL
436 || __getopt_nonoption_flags[0] == '\0')
437 nonoption_flags_max_len = -1;
438 else
439 {
440 const char *orig_str = __getopt_nonoption_flags;
441 int len = nonoption_flags_max_len = strlen (orig_str);
442 if (nonoption_flags_max_len < argc)
443 nonoption_flags_max_len = argc;
444 __getopt_nonoption_flags = malloc (nonoption_flags_max_len);
445 if (__getopt_nonoption_flags == NULL)
446 nonoption_flags_max_len = -1;
447 else
448 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
449 '\0', nonoption_flags_max_len - len);
450 }
451 }
452 nonoption_flags_len = nonoption_flags_max_len;
453 }
454 else
455 nonoption_flags_len = 0;
456 #endif
457
458 return optstring;
459 }
460
461 /* Scan elements of ARGV (whose length is ARGC) for option characters
462 given in OPTSTRING.
463
464 If an element of ARGV starts with '-', and is not exactly "-" or "--",
465 then it is an option element. The characters of this element
466 (aside from the initial '-') are option characters. If `getopt'
467 is called repeatedly, it returns successively each of the option characters
468 from each of the option elements.
469
470 If `getopt' finds another option character, it returns that character,
471 updating `optind' and `nextchar' so that the next call to `getopt' can
472 resume the scan with the following option character or ARGV-element.
473
474 If there are no more option characters, `getopt' returns -1.
475 Then `optind' is the index in ARGV of the first ARGV-element
476 that is not an option. (The ARGV-elements have been permuted
477 so that those that are not options now come last.)
478
479 OPTSTRING is a string containing the legitimate option characters.
480 If an option character is seen that is not listed in OPTSTRING,
481 return '?' after printing an error message. If you set `opterr' to
482 zero, the error message is suppressed but we still return '?'.
483
484 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
485 so the following text in the same ARGV-element, or the text of the following
486 ARGV-element, is returned in `optarg'. Two colons mean an option that
487 wants an optional arg; if there is text in the current ARGV-element,
488 it is returned in `optarg', otherwise `optarg' is set to zero.
489
490 If OPTSTRING starts with `-' or `+', it requests different methods of
491 handling the non-option ARGV-elements.
492 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
493
494 Long-named options begin with `--' instead of `-'.
495 Their names may be abbreviated as long as the abbreviation is unique
496 or is an exact match for some defined option. If they have an
497 argument, it follows the option name in the same ARGV-element, separated
498 from the option name by a `=', or else the in next ARGV-element.
499 When `getopt' finds a long-named option, it returns 0 if that option's
500 `flag' field is nonzero, the value of the option's `val' field
501 if the `flag' field is zero.
502
503 The elements of ARGV aren't really const, because we permute them.
504 But we pretend they're const in the prototype to be compatible
505 with other systems.
506
507 LONGOPTS is a vector of `struct option' terminated by an
508 element containing a name which is zero.
509
510 LONGIND returns the index in LONGOPT of the long-named option found.
511 It is only valid when a long-named option has been found by the most
512 recent call.
513
514 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
515 long-named options. */
516
517 int
518 _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
519 int argc;
520 char *const *argv;
521 const char *optstring;
522 const struct option *longopts;
523 int *longind;
524 int long_only;
525 {
526 int print_errors = opterr;
527 if (optstring[0] == ':')
528 print_errors = 0;
529
530 if (argc < 1)
531 return -1;
532
533 optarg = NULL;
534
535 if (optind == 0 || !__getopt_initialized)
536 {
537 if (optind == 0)
538 optind = 1; /* Don't scan ARGV[0], the program name. */
539 optstring = _getopt_initialize (argc, argv, optstring);
540 __getopt_initialized = 1;
541 }
542
543 /* Test whether ARGV[optind] points to a non-option argument.
544 Either it does not have option syntax, or there is an environment flag
545 from the shell indicating it is not an option. The later information
546 is only used when the used in the GNU libc. */
547 #if defined _LIBC && defined USE_NONOPTION_FLAGS
548 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
549 || (optind < nonoption_flags_len \
550 && __getopt_nonoption_flags[optind] == '1'))
551 #else
552 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
553 #endif
554
555 if (nextchar == NULL || *nextchar == '\0')
556 {
557 /* Advance to the next ARGV-element. */
558
559 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
560 moved back by the user (who may also have changed the arguments). */
561 if (last_nonopt > optind)
562 last_nonopt = optind;
563 if (first_nonopt > optind)
564 first_nonopt = optind;
565
566 if (ordering == PERMUTE)
567 {
568 /* If we have just processed some options following some non-options,
569 exchange them so that the options come first. */
570
571 if (first_nonopt != last_nonopt && last_nonopt != optind)
572 exchange ((char **) argv);
573 else if (last_nonopt != optind)
574 first_nonopt = optind;
575
576 /* Skip any additional non-options
577 and extend the range of non-options previously skipped. */
578
579 while (optind < argc && NONOPTION_P)
580 optind++;
581 last_nonopt = optind;
582 }
583
584 /* The special ARGV-element `--' means premature end of options.
585 Skip it like a null option,
586 then exchange with previous non-options as if it were an option,
587 then skip everything else like a non-option. */
588
589 if (optind != argc && !strcmp (argv[optind], "--"))
590 {
591 optind++;
592
593 if (first_nonopt != last_nonopt && last_nonopt != optind)
594 exchange ((char **) argv);
595 else if (first_nonopt == last_nonopt)
596 first_nonopt = optind;
597 last_nonopt = argc;
598
599 optind = argc;
600 }
601
602 /* If we have done all the ARGV-elements, stop the scan
603 and back over any non-options that we skipped and permuted. */
604
605 if (optind == argc)
606 {
607 /* Set the next-arg-index to point at the non-options
608 that we previously skipped, so the caller will digest them. */
609 if (first_nonopt != last_nonopt)
610 optind = first_nonopt;
611 return -1;
612 }
613
614 /* If we have come to a non-option and did not permute it,
615 either stop the scan or describe it to the caller and pass it by. */
616
617 if (NONOPTION_P)
618 {
619 if (ordering == REQUIRE_ORDER)
620 return -1;
621 optarg = argv[optind++];
622 return 1;
623 }
624
625 /* We have found another option-ARGV-element.
626 Skip the initial punctuation. */
627
628 nextchar = (argv[optind] + 1
629 + (longopts != NULL && argv[optind][1] == '-'));
630 }
631
632 /* Decode the current option-ARGV-element. */
633
634 /* Check whether the ARGV-element is a long option.
635
636 If long_only and the ARGV-element has the form "-f", where f is
637 a valid short option, don't consider it an abbreviated form of
638 a long option that starts with f. Otherwise there would be no
639 way to give the -f short option.
640
641 On the other hand, if there's a long option "fubar" and
642 the ARGV-element is "-fu", do consider that an abbreviation of
643 the long option, just like "--fu", and not "-f" with arg "u".
644
645 This distinction seems to be the most useful approach. */
646
647 if (longopts != NULL
648 && (argv[optind][1] == '-'
649 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
650 {
651 char *nameend;
652 const struct option *p;
653 const struct option *pfound = NULL;
654 int exact = 0;
655 int ambig = 0;
656 int indfound = -1;
657 int option_index;
658
659 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
660 /* Do nothing. */ ;
661
662 /* Test all long options for either exact match
663 or abbreviated matches. */
664 for (p = longopts, option_index = 0; p->name; p++, option_index++)
665 if (!strncmp (p->name, nextchar, nameend - nextchar))
666 {
667 if ((unsigned int) (nameend - nextchar)
668 == (unsigned int) strlen (p->name))
669 {
670 /* Exact match found. */
671 pfound = p;
672 indfound = option_index;
673 exact = 1;
674 break;
675 }
676 else if (pfound == NULL)
677 {
678 /* First nonexact match found. */
679 pfound = p;
680 indfound = option_index;
681 }
682 else if (long_only
683 || pfound->has_arg != p->has_arg
684 || pfound->flag != p->flag
685 || pfound->val != p->val)
686 /* Second or later nonexact match found. */
687 ambig = 1;
688 }
689
690 if (ambig && !exact)
691 {
692 if (print_errors)
693 {
694 #if defined _LIBC && defined USE_IN_LIBIO
695 char *buf;
696
697 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
698 argv[0], argv[optind]) >= 0)
699 {
700
701 if (_IO_fwide (stderr, 0) > 0)
702 __fwprintf (stderr, L"%s", buf);
703 else
704 fputs (buf, stderr);
705
706 free (buf);
707 }
708 #else
709 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
710 argv[0], argv[optind]);
711 #endif
712 }
713 nextchar += strlen (nextchar);
714 optind++;
715 optopt = 0;
716 return '?';
717 }
718
719 if (pfound != NULL)
720 {
721 option_index = indfound;
722 optind++;
723 if (*nameend)
724 {
725 /* Don't test has_arg with >, because some C compilers don't
726 allow it to be used on enums. */
727 if (pfound->has_arg)
728 optarg = nameend + 1;
729 else
730 {
731 if (print_errors)
732 {
733 #if defined _LIBC && defined USE_IN_LIBIO
734 char *buf;
735 int n;
736 #endif
737
738 if (argv[optind - 1][1] == '-')
739 {
740 /* --option */
741 #if defined _LIBC && defined USE_IN_LIBIO
742 n = __asprintf (&buf, _("\
743 %s: option `--%s' doesn't allow an argument\n"),
744 argv[0], pfound->name);
745 #else
746 fprintf (stderr, _("\
747 %s: option `--%s' doesn't allow an argument\n"),
748 argv[0], pfound->name);
749 #endif
750 }
751 else
752 {
753 /* +option or -option */
754 #if defined _LIBC && defined USE_IN_LIBIO
755 n = __asprintf (&buf, _("\
756 %s: option `%c%s' doesn't allow an argument\n"),
757 argv[0], argv[optind - 1][0],
758 pfound->name);
759 #else
760 fprintf (stderr, _("\
761 %s: option `%c%s' doesn't allow an argument\n"),
762 argv[0], argv[optind - 1][0], pfound->name);
763 #endif
764 }
765
766 #if defined _LIBC && defined USE_IN_LIBIO
767 if (n >= 0)
768 {
769 if (_IO_fwide (stderr, 0) > 0)
770 __fwprintf (stderr, L"%s", buf);
771 else
772 fputs (buf, stderr);
773
774 free (buf);
775 }
776 #endif
777 }
778
779 nextchar += strlen (nextchar);
780
781 optopt = pfound->val;
782 return '?';
783 }
784 }
785 else if (pfound->has_arg == 1)
786 {
787 if (optind < argc)
788 optarg = argv[optind++];
789 else
790 {
791 if (print_errors)
792 {
793 #if defined _LIBC && defined USE_IN_LIBIO
794 char *buf;
795
796 if (__asprintf (&buf, _("\
797 %s: option `%s' requires an argument\n"),
798 argv[0], argv[optind - 1]) >= 0)
799 {
800 if (_IO_fwide (stderr, 0) > 0)
801 __fwprintf (stderr, L"%s", buf);
802 else
803 fputs (buf, stderr);
804
805 free (buf);
806 }
807 #else
808 fprintf (stderr,
809 _("%s: option `%s' requires an argument\n"),
810 argv[0], argv[optind - 1]);
811 #endif
812 }
813 nextchar += strlen (nextchar);
814 optopt = pfound->val;
815 return optstring[0] == ':' ? ':' : '?';
816 }
817 }
818 nextchar += strlen (nextchar);
819 if (longind != NULL)
820 *longind = option_index;
821 if (pfound->flag)
822 {
823 *(pfound->flag) = pfound->val;
824 return 0;
825 }
826 return pfound->val;
827 }
828
829 /* Can't find it as a long option. If this is not getopt_long_only,
830 or the option starts with '--' or is not a valid short
831 option, then it's an error.
832 Otherwise interpret it as a short option. */
833 if (!long_only || argv[optind][1] == '-'
834 || my_index (optstring, *nextchar) == NULL)
835 {
836 if (print_errors)
837 {
838 #if defined _LIBC && defined USE_IN_LIBIO
839 char *buf;
840 int n;
841 #endif
842
843 if (argv[optind][1] == '-')
844 {
845 /* --option */
846 #if defined _LIBC && defined USE_IN_LIBIO
847 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
848 argv[0], nextchar);
849 #else
850 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
851 argv[0], nextchar);
852 #endif
853 }
854 else
855 {
856 /* +option or -option */
857 #if defined _LIBC && defined USE_IN_LIBIO
858 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
859 argv[0], argv[optind][0], nextchar);
860 #else
861 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
862 argv[0], argv[optind][0], nextchar);
863 #endif
864 }
865
866 #if defined _LIBC && defined USE_IN_LIBIO
867 if (n >= 0)
868 {
869 if (_IO_fwide (stderr, 0) > 0)
870 __fwprintf (stderr, L"%s", buf);
871 else
872 fputs (buf, stderr);
873
874 free (buf);
875 }
876 #endif
877 }
878 nextchar = (char *) "";
879 optind++;
880 optopt = 0;
881 return '?';
882 }
883 }
884
885 /* Look at and handle the next short option-character. */
886
887 {
888 char c = *nextchar++;
889 char *temp = my_index (optstring, c);
890
891 /* Increment `optind' when we start to process its last character. */
892 if (*nextchar == '\0')
893 ++optind;
894
895 if (temp == NULL || c == ':')
896 {
897 if (print_errors)
898 {
899 #if defined _LIBC && defined USE_IN_LIBIO
900 char *buf;
901 int n;
902 #endif
903
904 if (posixly_correct)
905 {
906 /* 1003.2 specifies the format of this message. */
907 #if defined _LIBC && defined USE_IN_LIBIO
908 n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
909 argv[0], c);
910 #else
911 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
912 #endif
913 }
914 else
915 {
916 #if defined _LIBC && defined USE_IN_LIBIO
917 n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
918 argv[0], c);
919 #else
920 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
921 #endif
922 }
923
924 #if defined _LIBC && defined USE_IN_LIBIO
925 if (n >= 0)
926 {
927 if (_IO_fwide (stderr, 0) > 0)
928 __fwprintf (stderr, L"%s", buf);
929 else
930 fputs (buf, stderr);
931
932 free (buf);
933 }
934 #endif
935 }
936 optopt = c;
937 return '?';
938 }
939 /* Convenience. Treat POSIX -W foo same as long option --foo */
940 if (temp[0] == 'W' && temp[1] == ';')
941 {
942 char *nameend;
943 const struct option *p;
944 const struct option *pfound = NULL;
945 int exact = 0;
946 int ambig = 0;
947 int indfound = 0;
948 int option_index;
949
950 /* This is an option that requires an argument. */
951 if (*nextchar != '\0')
952 {
953 optarg = nextchar;
954 /* If we end this ARGV-element by taking the rest as an arg,
955 we must advance to the next element now. */
956 optind++;
957 }
958 else if (optind == argc)
959 {
960 if (print_errors)
961 {
962 /* 1003.2 specifies the format of this message. */
963 #if defined _LIBC && defined USE_IN_LIBIO
964 char *buf;
965
966 if (__asprintf (&buf,
967 _("%s: option requires an argument -- %c\n"),
968 argv[0], c) >= 0)
969 {
970 if (_IO_fwide (stderr, 0) > 0)
971 __fwprintf (stderr, L"%s", buf);
972 else
973 fputs (buf, stderr);
974
975 free (buf);
976 }
977 #else
978 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
979 argv[0], c);
980 #endif
981 }
982 optopt = c;
983 if (optstring[0] == ':')
984 c = ':';
985 else
986 c = '?';
987 return c;
988 }
989 else
990 /* We already incremented `optind' once;
991 increment it again when taking next ARGV-elt as argument. */
992 optarg = argv[optind++];
993
994 /* optarg is now the argument, see if it's in the
995 table of longopts. */
996
997 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
998 /* Do nothing. */ ;
999
1000 /* Test all long options for either exact match
1001 or abbreviated matches. */
1002 for (p = longopts, option_index = 0; p->name; p++, option_index++)
1003 if (!strncmp (p->name, nextchar, nameend - nextchar))
1004 {
1005 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
1006 {
1007 /* Exact match found. */
1008 pfound = p;
1009 indfound = option_index;
1010 exact = 1;
1011 break;
1012 }
1013 else if (pfound == NULL)
1014 {
1015 /* First nonexact match found. */
1016 pfound = p;
1017 indfound = option_index;
1018 }
1019 else
1020 /* Second or later nonexact match found. */
1021 ambig = 1;
1022 }
1023 if (ambig && !exact)
1024 {
1025 if (print_errors)
1026 {
1027 #if defined _LIBC && defined USE_IN_LIBIO
1028 char *buf;
1029
1030 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
1031 argv[0], argv[optind]) >= 0)
1032 {
1033 if (_IO_fwide (stderr, 0) > 0)
1034 __fwprintf (stderr, L"%s", buf);
1035 else
1036 fputs (buf, stderr);
1037
1038 free (buf);
1039 }
1040 #else
1041 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
1042 argv[0], argv[optind]);
1043 #endif
1044 }
1045 nextchar += strlen (nextchar);
1046 optind++;
1047 return '?';
1048 }
1049 if (pfound != NULL)
1050 {
1051 option_index = indfound;
1052 if (*nameend)
1053 {
1054 /* Don't test has_arg with >, because some C compilers don't
1055 allow it to be used on enums. */
1056 if (pfound->has_arg)
1057 optarg = nameend + 1;
1058 else
1059 {
1060 if (print_errors)
1061 {
1062 #if defined _LIBC && defined USE_IN_LIBIO
1063 char *buf;
1064
1065 if (__asprintf (&buf, _("\
1066 %s: option `-W %s' doesn't allow an argument\n"),
1067 argv[0], pfound->name) >= 0)
1068 {
1069 if (_IO_fwide (stderr, 0) > 0)
1070 __fwprintf (stderr, L"%s", buf);
1071 else
1072 fputs (buf, stderr);
1073
1074 free (buf);
1075 }
1076 #else
1077 fprintf (stderr, _("\
1078 %s: option `-W %s' doesn't allow an argument\n"),
1079 argv[0], pfound->name);
1080 #endif
1081 }
1082
1083 nextchar += strlen (nextchar);
1084 return '?';
1085 }
1086 }
1087 else if (pfound->has_arg == 1)
1088 {
1089 if (optind < argc)
1090 optarg = argv[optind++];
1091 else
1092 {
1093 if (print_errors)
1094 {
1095 #if defined _LIBC && defined USE_IN_LIBIO
1096 char *buf;
1097
1098 if (__asprintf (&buf, _("\
1099 %s: option `%s' requires an argument\n"),
1100 argv[0], argv[optind - 1]) >= 0)
1101 {
1102 if (_IO_fwide (stderr, 0) > 0)
1103 __fwprintf (stderr, L"%s", buf);
1104 else
1105 fputs (buf, stderr);
1106
1107 free (buf);
1108 }
1109 #else
1110 fprintf (stderr,
1111 _("%s: option `%s' requires an argument\n"),
1112 argv[0], argv[optind - 1]);
1113 #endif
1114 }
1115 nextchar += strlen (nextchar);
1116 return optstring[0] == ':' ? ':' : '?';
1117 }
1118 }
1119 nextchar += strlen (nextchar);
1120 if (longind != NULL)
1121 *longind = option_index;
1122 if (pfound->flag)
1123 {
1124 *(pfound->flag) = pfound->val;
1125 return 0;
1126 }
1127 return pfound->val;
1128 }
1129 nextchar = NULL;
1130 return 'W'; /* Let the application handle it. */
1131 }
1132 if (temp[1] == ':')
1133 {
1134 if (temp[2] == ':')
1135 {
1136 /* This is an option that accepts an argument optionally. */
1137 if (*nextchar != '\0')
1138 {
1139 optarg = nextchar;
1140 optind++;
1141 }
1142 else
1143 optarg = NULL;
1144 nextchar = NULL;
1145 }
1146 else
1147 {
1148 /* This is an option that requires an argument. */
1149 if (*nextchar != '\0')
1150 {
1151 optarg = nextchar;
1152 /* If we end this ARGV-element by taking the rest as an arg,
1153 we must advance to the next element now. */
1154 optind++;
1155 }
1156 else if (optind == argc)
1157 {
1158 if (print_errors)
1159 {
1160 /* 1003.2 specifies the format of this message. */
1161 #if defined _LIBC && defined USE_IN_LIBIO
1162 char *buf;
1163
1164 if (__asprintf (&buf, _("\
1165 %s: option requires an argument -- %c\n"),
1166 argv[0], c) >= 0)
1167 {
1168 if (_IO_fwide (stderr, 0) > 0)
1169 __fwprintf (stderr, L"%s", buf);
1170 else
1171 fputs (buf, stderr);
1172
1173 free (buf);
1174 }
1175 #else
1176 fprintf (stderr,
1177 _("%s: option requires an argument -- %c\n"),
1178 argv[0], c);
1179 #endif
1180 }
1181 optopt = c;
1182 if (optstring[0] == ':')
1183 c = ':';
1184 else
1185 c = '?';
1186 }
1187 else
1188 /* We already incremented `optind' once;
1189 increment it again when taking next ARGV-elt as argument. */
1190 optarg = argv[optind++];
1191 nextchar = NULL;
1192 }
1193 }
1194 return c;
1195 }
1196 }
1197
1198 int
1199 getopt (argc, argv, optstring)
1200 int argc;
1201 char *const *argv;
1202 const char *optstring;
1203 {
1204 return _getopt_internal (argc, argv, optstring,
1205 NULL,
1206 NULL,
1207 0);
1208 }
1209
1210 #endif /* Not ELIDE_CODE. */
1211
1212 #ifdef TEST
1213
1214 /* Compile with -DTEST to make an executable for use in testing
1215 the above definition of `getopt'. */
1216
1217 int
1218 main (argc, argv)
1219 int argc;
1220 char **argv;
1221 {
1222 int c;
1223 int digit_optind = 0;
1224
1225 while (1)
1226 {
1227 int this_option_optind = optind ? optind : 1;
1228
1229 c = getopt (argc, argv, "abc:d:0123456789");
1230 if (c == -1)
1231 break;
1232
1233 switch (c)
1234 {
1235 case '':
1236 case '1':
1237 case '2':
1238 case '3':
1239 case '4':
1240 case '5':
1241 case '6':
1242 case '7':
1243 case '8':
1244 case '9':
1245 if (digit_optind != 0 && digit_optind != this_option_optind)
1246 printf ("digits occur in two different argv-elements.\n");
1247 digit_optind = this_option_optind;
1248 printf ("option %c\n", c);
1249 break;
1250
1251 case 'a':
1252 printf ("option a\n");
1253 break;
1254
1255 case 'b':
1256 printf ("option b\n");
1257 break;
1258
1259 case 'c':
1260 printf ("option c with value `%s'\n", optarg);
1261 break;
1262
1263 case '?':
1264 break;
1265
1266 default:
1267 printf ("?? getopt returned character code 0%o ??\n", c);
1268 }
1269 }
1270
1271 if (optind < argc)
1272 {
1273 printf ("non-option ARGV-elements: ");
1274 while (optind < argc)
1275 printf ("%s ", argv[optind++]);
1276 printf ("\n");
1277 }
1278
1279 exit (0);
1280 }
1281
1282 #endif /* TEST */
1283
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