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
6 Copyright (C) 1987-2012 Free Software Foundation, Inc.
8 NOTE: The canonical source of this file is maintained with the GNU C Library.
9 Bugs can be reported to bug-glibc@gnu.org.
11 GNU Make is free software; you can redistribute it and/or modify it under the
12 terms of the GNU General Public License as published by the Free Software
13 Foundation; either version 3 of the License, or (at your option) any later
16 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
17 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
18 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along with
21 this program. If not, see <http://www.gnu.org/licenses/>. */
23 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
24 Ditto for AIX 3.2 and <stdlib.h>. */
33 #if !defined __STDC__ || !__STDC__
34 /* This is a separate conditional since some stdc systems
35 reject `defined (const)'. */
43 /* Comment out all this code if we are using the GNU C Library, and are not
44 actually compiling the library itself. This code is part of the GNU C
45 Library, but also included in many other GNU distributions. Compiling
46 and linking in this code is a waste when using the GNU C library
47 (especially if it is a shared library). Rather than having every GNU
48 program understand `configure --with-gnu-libc' and omit the object files,
49 it is simpler to just do this in the source for each such file. */
51 #define GETOPT_INTERFACE_VERSION 2
52 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
53 # include <gnu-versions.h>
54 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
62 /* This needs to come after some library #include
63 to get __GNU_LIBRARY__ defined. */
64 #ifdef __GNU_LIBRARY__
65 /* Don't include stdlib.h for non-GNU C libraries because some of them
66 contain conflicting prototypes for getopt. */
69 #endif /* GNU C library. */
73 # if HAVE_STRING_H - 0
78 /* This is for other GNU distributions with internationalized messages.
79 When compiling libc, the _ macro is predefined. */
81 #define _(msgid) gettext (msgid)
84 /* This version of `getopt' appears to the caller like standard Unix 'getopt'
85 but it behaves differently for the user, since it allows the user
86 to intersperse the options with the other arguments.
88 As `getopt' works, it permutes the elements of ARGV so that,
89 when it is done, all the options precede everything else. Thus
90 all application programs are extended to handle flexible argument order.
92 Setting the environment variable POSIXLY_CORRECT disables permutation.
93 Then the behavior is completely standard.
95 GNU application programs can use a third alternative mode in which
96 they can distinguish the relative order of options and other arguments. */
100 /* For communication from `getopt' to the caller.
101 When `getopt' finds an option that takes an argument,
102 the argument value is returned here.
103 Also, when `ordering' is RETURN_IN_ORDER,
104 each non-option ARGV-element is returned here. */
108 /* Index in ARGV of the next element to be scanned.
109 This is used for communication to and from the caller
110 and for communication between successive calls to `getopt'.
112 On entry to `getopt', zero means this is the first call; initialize.
114 When `getopt' returns -1, this is the index of the first of the
115 non-option elements that the caller should itself scan.
117 Otherwise, `optind' communicates from one call to the next
118 how much of ARGV has been scanned so far. */
120 /* 1003.2 says this must be 1 before any call. */
123 /* Formerly, initialization of getopt depended on optind==0, which
124 causes problems with re-calling getopt as programs generally don't
127 int __getopt_initialized
= 0;
129 /* The next char to be scanned in the option-element
130 in which the last option character we returned was found.
131 This allows us to pick up the scan where we left off.
133 If this is zero, or a null string, it means resume the scan
134 by advancing to the next ARGV-element. */
136 static char *nextchar
;
138 /* Callers store zero here to inhibit the error message
139 for unrecognized options. */
143 /* Set to an option character which was unrecognized.
144 This must be initialized on some systems to avoid linking in the
145 system's own getopt implementation. */
149 /* Describe how to deal with options that follow non-option ARGV-elements.
151 If the caller did not specify anything,
152 the default is REQUIRE_ORDER if the environment variable
153 POSIXLY_CORRECT is defined, PERMUTE otherwise.
155 REQUIRE_ORDER means don't recognize them as options;
156 stop option processing when the first non-option is seen.
157 This is what Unix does.
158 This mode of operation is selected by either setting the environment
159 variable POSIXLY_CORRECT, or using `+' as the first character
160 of the list of option characters.
162 PERMUTE is the default. We permute the contents of ARGV as we scan,
163 so that eventually all the non-options are at the end. This allows options
164 to be given in any order, even with programs that were not written to
167 RETURN_IN_ORDER is an option available to programs that were written
168 to expect options and other ARGV-elements in any order and that care about
169 the ordering of the two. We describe each non-option ARGV-element
170 as if it were the argument of an option with character code 1.
171 Using `-' as the first character of the list of option characters
172 selects this mode of operation.
174 The special argument `--' forces an end of option-scanning regardless
175 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
176 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
180 REQUIRE_ORDER
, PERMUTE
, RETURN_IN_ORDER
183 /* Value of POSIXLY_CORRECT environment variable. */
184 static char *posixly_correct
;
186 #ifdef __GNU_LIBRARY__
187 /* We want to avoid inclusion of string.h with non-GNU libraries
188 because there are many ways it can cause trouble.
189 On some systems, it contains special magic macros that don't work
192 # define my_index strchr
198 # include <strings.h>
201 /* Avoid depending on library functions or files
202 whose names are inconsistent. */
205 extern char *getenv ();
209 my_index (const char *str
, int chr
)
220 /* If using GCC, we can safely declare strlen this way.
221 If not using GCC, it is ok not to declare it. */
223 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
224 That was relevant to code that was here before. */
225 # if (!defined __STDC__ || !__STDC__) && !defined strlen
226 /* gcc with -traditional declares the built-in strlen to return int,
227 and has done so at least since version 2.4.5. -- rms. */
228 extern int strlen (const char *);
229 # endif /* not __STDC__ */
230 #endif /* __GNUC__ */
232 #endif /* not __GNU_LIBRARY__ */
234 /* Handle permutation of arguments. */
236 /* Describe the part of ARGV that contains non-options that have
237 been skipped. `first_nonopt' is the index in ARGV of the first of them;
238 `last_nonopt' is the index after the last of them. */
240 static int first_nonopt
;
241 static int last_nonopt
;
244 /* Bash 2.0 gives us an environment variable containing flags
245 indicating ARGV elements that should not be considered arguments. */
247 /* Defined in getopt_init.c */
248 extern char *__getopt_nonoption_flags
;
250 static int nonoption_flags_max_len
;
251 static int nonoption_flags_len
;
253 static int original_argc
;
254 static char *const *original_argv
;
256 /* Make sure the environment variable bash 2.0 puts in the environment
257 is valid for the getopt call we must make sure that the ARGV passed
258 to getopt is that one passed to the process. */
259 static void __attribute__ ((unused
))
260 store_args_and_env (int argc
, char *const *argv
)
262 /* XXX This is no good solution. We should rather copy the args so
263 that we can compare them later. But we must not use malloc(3). */
264 original_argc
= argc
;
265 original_argv
= argv
;
267 # ifdef text_set_element
268 text_set_element (__libc_subinit
, store_args_and_env
);
269 # endif /* text_set_element */
271 # define SWAP_FLAGS(ch1, ch2) \
272 if (nonoption_flags_len > 0) \
274 char __tmp = __getopt_nonoption_flags[ch1]; \
275 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
276 __getopt_nonoption_flags[ch2] = __tmp; \
279 # define SWAP_FLAGS(ch1, ch2)
282 /* Exchange two adjacent subsequences of ARGV.
283 One subsequence is elements [first_nonopt,last_nonopt)
284 which contains all the non-options that have been skipped so far.
285 The other is elements [last_nonopt,optind), which contains all
286 the options processed since those non-options were skipped.
288 `first_nonopt' and `last_nonopt' are relocated so that they describe
289 the new indices of the non-options in ARGV after they are moved. */
291 #if defined __STDC__ && __STDC__
292 static void exchange (char **);
296 exchange (char **argv
)
298 int bottom
= first_nonopt
;
299 int middle
= last_nonopt
;
303 /* Exchange the shorter segment with the far end of the longer segment.
304 That puts the shorter segment into the right place.
305 It leaves the longer segment in the right place overall,
306 but it consists of two parts that need to be swapped next. */
309 /* First make sure the handling of the `__getopt_nonoption_flags'
310 string can work normally. Our top argument must be in the range
312 if (nonoption_flags_len
> 0 && top
>= nonoption_flags_max_len
)
314 /* We must extend the array. The user plays games with us and
315 presents new arguments. */
316 char *new_str
= malloc (top
+ 1);
318 nonoption_flags_len
= nonoption_flags_max_len
= 0;
321 memset (__mempcpy (new_str
, __getopt_nonoption_flags
,
322 nonoption_flags_max_len
),
323 '\0', top
+ 1 - nonoption_flags_max_len
);
324 nonoption_flags_max_len
= top
+ 1;
325 __getopt_nonoption_flags
= new_str
;
330 while (top
> middle
&& middle
> bottom
)
332 if (top
- middle
> middle
- bottom
)
334 /* Bottom segment is the short one. */
335 int len
= middle
- bottom
;
338 /* Swap it with the top part of the top segment. */
339 for (i
= 0; i
< len
; i
++)
341 tem
= argv
[bottom
+ i
];
342 argv
[bottom
+ i
] = argv
[top
- (middle
- bottom
) + i
];
343 argv
[top
- (middle
- bottom
) + i
] = tem
;
344 SWAP_FLAGS (bottom
+ i
, top
- (middle
- bottom
) + i
);
346 /* Exclude the moved bottom segment from further swapping. */
351 /* Top segment is the short one. */
352 int len
= top
- middle
;
355 /* Swap it with the bottom part of the bottom segment. */
356 for (i
= 0; i
< len
; i
++)
358 tem
= argv
[bottom
+ i
];
359 argv
[bottom
+ i
] = argv
[middle
+ i
];
360 argv
[middle
+ i
] = tem
;
361 SWAP_FLAGS (bottom
+ i
, middle
+ i
);
363 /* Exclude the moved top segment from further swapping. */
368 /* Update records for the slots the non-options now occupy. */
370 first_nonopt
+= (optind
- last_nonopt
);
371 last_nonopt
= optind
;
374 /* Initialize the internal data when the first call is made. */
376 #if defined __STDC__ && __STDC__
377 static const char *_getopt_initialize (int, char *const *, const char *);
380 _getopt_initialize (int argc
, char *const *argv
, const char *optstring
)
382 /* Start processing options with ARGV-element 1 (since ARGV-element 0
383 is the program name); the sequence of previously skipped
384 non-option ARGV-elements is empty. */
386 first_nonopt
= last_nonopt
= optind
;
390 posixly_correct
= getenv ("POSIXLY_CORRECT");
392 /* Determine how to handle the ordering of options and nonoptions. */
394 if (optstring
[0] == '-')
396 ordering
= RETURN_IN_ORDER
;
399 else if (optstring
[0] == '+')
401 ordering
= REQUIRE_ORDER
;
404 else if (posixly_correct
!= NULL
)
405 ordering
= REQUIRE_ORDER
;
410 if (posixly_correct
== NULL
411 && argc
== original_argc
&& argv
== original_argv
)
413 if (nonoption_flags_max_len
== 0)
415 if (__getopt_nonoption_flags
== NULL
416 || __getopt_nonoption_flags
[0] == '\0')
417 nonoption_flags_max_len
= -1;
420 const char *orig_str
= __getopt_nonoption_flags
;
421 int len
= nonoption_flags_max_len
= strlen (orig_str
);
422 if (nonoption_flags_max_len
< argc
)
423 nonoption_flags_max_len
= argc
;
424 __getopt_nonoption_flags
=
425 (char *) malloc (nonoption_flags_max_len
);
426 if (__getopt_nonoption_flags
== NULL
)
427 nonoption_flags_max_len
= -1;
429 memset (__mempcpy (__getopt_nonoption_flags
, orig_str
, len
),
430 '\0', nonoption_flags_max_len
- len
);
433 nonoption_flags_len
= nonoption_flags_max_len
;
436 nonoption_flags_len
= 0;
442 /* Scan elements of ARGV (whose length is ARGC) for option characters
445 If an element of ARGV starts with '-', and is not exactly "-" or "--",
446 then it is an option element. The characters of this element
447 (aside from the initial '-') are option characters. If `getopt'
448 is called repeatedly, it returns successively each of the option characters
449 from each of the option elements.
451 If `getopt' finds another option character, it returns that character,
452 updating `optind' and `nextchar' so that the next call to `getopt' can
453 resume the scan with the following option character or ARGV-element.
455 If there are no more option characters, `getopt' returns -1.
456 Then `optind' is the index in ARGV of the first ARGV-element
457 that is not an option. (The ARGV-elements have been permuted
458 so that those that are not options now come last.)
460 OPTSTRING is a string containing the legitimate option characters.
461 If an option character is seen that is not listed in OPTSTRING,
462 return '?' after printing an error message. If you set `opterr' to
463 zero, the error message is suppressed but we still return '?'.
465 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
466 so the following text in the same ARGV-element, or the text of the following
467 ARGV-element, is returned in `optarg'. Two colons mean an option that
468 wants an optional arg; if there is text in the current ARGV-element,
469 it is returned in `optarg', otherwise `optarg' is set to zero.
471 If OPTSTRING starts with `-' or `+', it requests different methods of
472 handling the non-option ARGV-elements.
473 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
475 Long-named options begin with `--' instead of `-'.
476 Their names may be abbreviated as long as the abbreviation is unique
477 or is an exact match for some defined option. If they have an
478 argument, it follows the option name in the same ARGV-element, separated
479 from the option name by a `=', or else the in next ARGV-element.
480 When `getopt' finds a long-named option, it returns 0 if that option's
481 `flag' field is nonzero, the value of the option's `val' field
482 if the `flag' field is zero.
484 The elements of ARGV aren't really const, because we permute them.
485 But we pretend they're const in the prototype to be compatible
488 LONGOPTS is a vector of `struct option' terminated by an
489 element containing a name which is zero.
491 LONGIND returns the index in LONGOPT of the long-named option found.
492 It is only valid when a long-named option has been found by the most
495 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
496 long-named options. */
499 _getopt_internal (int argc
, char *const *argv
, const char *optstring
,
500 const struct option
*longopts
, int *longind
, int long_only
)
504 if (optind
== 0 || !__getopt_initialized
)
507 optind
= 1; /* Don't scan ARGV[0], the program name. */
508 optstring
= _getopt_initialize (argc
, argv
, optstring
);
509 __getopt_initialized
= 1;
512 /* Test whether ARGV[optind] points to a non-option argument.
513 Either it does not have option syntax, or there is an environment flag
514 from the shell indicating it is not an option. The later information
515 is only used when the used in the GNU libc. */
517 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
518 || (optind < nonoption_flags_len \
519 && __getopt_nonoption_flags[optind] == '1'))
521 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
524 if (nextchar
== NULL
|| *nextchar
== '\0')
526 /* Advance to the next ARGV-element. */
528 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
529 moved back by the user (who may also have changed the arguments). */
530 if (last_nonopt
> optind
)
531 last_nonopt
= optind
;
532 if (first_nonopt
> optind
)
533 first_nonopt
= optind
;
535 if (ordering
== PERMUTE
)
537 /* If we have just processed some options following some non-options,
538 exchange them so that the options come first. */
540 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
541 exchange ((char **) argv
);
542 else if (last_nonopt
!= optind
)
543 first_nonopt
= optind
;
545 /* Skip any additional non-options
546 and extend the range of non-options previously skipped. */
548 while (optind
< argc
&& NONOPTION_P
)
550 last_nonopt
= optind
;
553 /* The special ARGV-element `--' means premature end of options.
554 Skip it like a null option,
555 then exchange with previous non-options as if it were an option,
556 then skip everything else like a non-option. */
558 if (optind
!= argc
&& !strcmp (argv
[optind
], "--"))
562 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
563 exchange ((char **) argv
);
564 else if (first_nonopt
== last_nonopt
)
565 first_nonopt
= optind
;
571 /* If we have done all the ARGV-elements, stop the scan
572 and back over any non-options that we skipped and permuted. */
576 /* Set the next-arg-index to point at the non-options
577 that we previously skipped, so the caller will digest them. */
578 if (first_nonopt
!= last_nonopt
)
579 optind
= first_nonopt
;
583 /* If we have come to a non-option and did not permute it,
584 either stop the scan or describe it to the caller and pass it by. */
588 if (ordering
== REQUIRE_ORDER
)
590 optarg
= argv
[optind
++];
594 /* We have found another option-ARGV-element.
595 Skip the initial punctuation. */
597 nextchar
= (argv
[optind
] + 1
598 + (longopts
!= NULL
&& argv
[optind
][1] == '-'));
601 /* Decode the current option-ARGV-element. */
603 /* Check whether the ARGV-element is a long option.
605 If long_only and the ARGV-element has the form "-f", where f is
606 a valid short option, don't consider it an abbreviated form of
607 a long option that starts with f. Otherwise there would be no
608 way to give the -f short option.
610 On the other hand, if there's a long option "fubar" and
611 the ARGV-element is "-fu", do consider that an abbreviation of
612 the long option, just like "--fu", and not "-f" with arg "u".
614 This distinction seems to be the most useful approach. */
617 && (argv
[optind
][1] == '-'
618 || (long_only
&& (argv
[optind
][2] || !my_index (optstring
, argv
[optind
][1])))))
621 const struct option
*p
;
622 const struct option
*pfound
= NULL
;
628 for (nameend
= nextchar
; *nameend
&& *nameend
!= '='; nameend
++)
631 /* Test all long options for either exact match
632 or abbreviated matches. */
633 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
634 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
636 if ((unsigned int) (nameend
- nextchar
)
637 == (unsigned int) strlen (p
->name
))
639 /* Exact match found. */
641 indfound
= option_index
;
645 else if (pfound
== NULL
)
647 /* First nonexact match found. */
649 indfound
= option_index
;
652 /* Second or later nonexact match found. */
659 fprintf (stderr
, _("%s: option '%s' is ambiguous\n"),
660 argv
[0], argv
[optind
]);
661 nextchar
+= strlen (nextchar
);
669 option_index
= indfound
;
673 /* Don't test has_arg with >, because some C compilers don't
674 allow it to be used on enums. */
676 optarg
= nameend
+ 1;
680 if (argv
[optind
- 1][1] == '-')
683 _("%s: option '--%s' doesn't allow an argument\n"),
684 argv
[0], pfound
->name
);
686 /* +option or -option */
688 _("%s: option '%c%s' doesn't allow an argument\n"),
689 argv
[0], argv
[optind
- 1][0], pfound
->name
);
691 nextchar
+= strlen (nextchar
);
693 optopt
= pfound
->val
;
697 else if (pfound
->has_arg
== 1)
700 optarg
= argv
[optind
++];
705 _("%s: option '%s' requires an argument\n"),
706 argv
[0], argv
[optind
- 1]);
707 nextchar
+= strlen (nextchar
);
708 optopt
= pfound
->val
;
709 return optstring
[0] == ':' ? ':' : '?';
712 nextchar
+= strlen (nextchar
);
714 *longind
= option_index
;
717 *(pfound
->flag
) = pfound
->val
;
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
[optind
][1] == '-'
728 || my_index (optstring
, *nextchar
) == NULL
)
732 if (argv
[optind
][1] == '-')
734 fprintf (stderr
, _("%s: unrecognized option '--%s'\n"),
737 /* +option or -option */
738 fprintf (stderr
, _("%s: unrecognized option '%c%s'\n"),
739 argv
[0], argv
[optind
][0], nextchar
);
741 nextchar
= (char *) "";
748 /* Look at and handle the next short option-character. */
751 char c
= *nextchar
++;
752 char *temp
= my_index (optstring
, c
);
754 /* Increment `optind' when we start to process its last character. */
755 if (*nextchar
== '\0')
758 if (temp
== NULL
|| c
== ':')
763 /* 1003.2 specifies the format of this message. */
764 fprintf (stderr
, _("%s: illegal option -- %c\n"),
767 fprintf (stderr
, _("%s: invalid option -- %c\n"),
773 /* Convenience. Treat POSIX -W foo same as long option --foo */
774 if (temp
[0] == 'W' && temp
[1] == ';')
777 const struct option
*p
;
778 const struct option
*pfound
= NULL
;
784 /* This is an option that requires an argument. */
785 if (*nextchar
!= '\0')
788 /* If we end this ARGV-element by taking the rest as an arg,
789 we must advance to the next element now. */
792 else if (optind
== argc
)
796 /* 1003.2 specifies the format of this message. */
797 fprintf (stderr
, _("%s: option requires an argument -- %c\n"),
801 if (optstring
[0] == ':')
808 /* We already incremented `optind' once;
809 increment it again when taking next ARGV-elt as argument. */
810 optarg
= argv
[optind
++];
812 /* optarg is now the argument, see if it's in the
813 table of longopts. */
815 for (nextchar
= nameend
= optarg
; *nameend
&& *nameend
!= '='; nameend
++)
818 /* Test all long options for either exact match
819 or abbreviated matches. */
820 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
821 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
823 if ((unsigned int) (nameend
- nextchar
) == strlen (p
->name
))
825 /* Exact match found. */
827 indfound
= option_index
;
831 else if (pfound
== NULL
)
833 /* First nonexact match found. */
835 indfound
= option_index
;
838 /* Second or later nonexact match found. */
844 fprintf (stderr
, _("%s: option '-W %s' is ambiguous\n"),
845 argv
[0], argv
[optind
]);
846 nextchar
+= strlen (nextchar
);
852 option_index
= indfound
;
855 /* Don't test has_arg with >, because some C compilers don't
856 allow it to be used on enums. */
858 optarg
= nameend
+ 1;
862 fprintf (stderr
, _("\
863 %s: option '-W %s' doesn't allow an argument\n"),
864 argv
[0], pfound
->name
);
866 nextchar
+= strlen (nextchar
);
870 else if (pfound
->has_arg
== 1)
873 optarg
= argv
[optind
++];
878 _("%s: option '%s' requires an argument\n"),
879 argv
[0], argv
[optind
- 1]);
880 nextchar
+= strlen (nextchar
);
881 return optstring
[0] == ':' ? ':' : '?';
884 nextchar
+= strlen (nextchar
);
886 *longind
= option_index
;
889 *(pfound
->flag
) = pfound
->val
;
895 return 'W'; /* Let the application handle it. */
901 /* This is an option that accepts an argument optionally. */
902 if (*nextchar
!= '\0')
913 /* This is an option that requires an argument. */
914 if (*nextchar
!= '\0')
917 /* If we end this ARGV-element by taking the rest as an arg,
918 we must advance to the next element now. */
921 else if (optind
== argc
)
925 /* 1003.2 specifies the format of this message. */
927 _("%s: option requires an argument -- %c\n"),
931 if (optstring
[0] == ':')
937 /* We already incremented `optind' once;
938 increment it again when taking next ARGV-elt as argument. */
939 optarg
= argv
[optind
++];
948 getopt (int argc
, char *const *argv
, const char *optstring
)
950 return _getopt_internal (argc
, argv
, optstring
,
951 (const struct option
*) 0,
956 #endif /* Not ELIDE_CODE. */
960 /* Compile with -DTEST to make an executable for use in testing
961 the above definition of `getopt'. */
964 main (int argc
, char **argv
)
967 int digit_optind
= 0;
971 int this_option_optind
= optind
? optind
: 1;
973 c
= getopt (argc
, argv
, "abc:d:0123456789");
989 if (digit_optind
!= 0 && digit_optind
!= this_option_optind
)
990 printf ("digits occur in two different argv-elements.\n");
991 digit_optind
= this_option_optind
;
992 printf ("option %c\n", c
);
996 printf ("option a\n");
1000 printf ("option b\n");
1004 printf ("option c with value '%s'\n", optarg
);
1011 printf ("?? getopt returned character code 0%o ??\n", c
);
1017 printf ("non-option ARGV-elements: ");
1018 while (optind
< argc
)
1019 printf ("%s ", argv
[optind
++]);