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, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98
7 Free Software Foundation, Inc.
9 NOTE: The canonical source of this file is maintained with the GNU C Library.
10 Bugs can be reported to bug-glibc@gnu.org.
12 This program is free software; you can redistribute it and/or modify it
13 under the terms of the GNU General Public License as published by the
14 Free Software Foundation; either version 2, or (at your option) any
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
27 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
28 Ditto for AIX 3.2 and <stdlib.h>. */
37 #if !defined __STDC__ || !__STDC__
38 /* This is a separate conditional since some stdc systems
39 reject `defined (const)'. */
48 /* Comment out all this code if we are using the GNU C Library, and are not
49 actually compiling the library itself. This code is part of the GNU C
50 Library, but also included in many other GNU distributions. Compiling
51 and linking in this code is a waste when using the GNU C library
52 (especially if it is a shared library). Rather than having every GNU
53 program understand `configure --with-gnu-libc' and omit the object files,
54 it is simpler to just do this in the source for each such file. */
56 #define GETOPT_INTERFACE_VERSION 2
57 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
58 # include <gnu-versions.h>
59 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
67 /* This needs to come after some library #include
68 to get __GNU_LIBRARY__ defined. */
69 #ifdef __GNU_LIBRARY__
70 /* Don't include stdlib.h for non-GNU C libraries because some of them
71 contain conflicting prototypes for getopt. */
74 #endif /* GNU C library. */
78 # if HAVE_STRING_H - 0
83 /* This is for other GNU distributions with internationalized messages.
84 When compiling libc, the _ macro is predefined. */
86 #define _(msgid) gettext (msgid)
89 /* This version of `getopt' appears to the caller like standard Unix `getopt'
90 but it behaves differently for the user, since it allows the user
91 to intersperse the options with the other arguments.
93 As `getopt' works, it permutes the elements of ARGV so that,
94 when it is done, all the options precede everything else. Thus
95 all application programs are extended to handle flexible argument order.
97 Setting the environment variable POSIXLY_CORRECT disables permutation.
98 Then the behavior is completely standard.
100 GNU application programs can use a third alternative mode in which
101 they can distinguish the relative order of options and other arguments. */
105 /* For communication from `getopt' to the caller.
106 When `getopt' finds an option that takes an argument,
107 the argument value is returned here.
108 Also, when `ordering' is RETURN_IN_ORDER,
109 each non-option ARGV-element is returned here. */
113 /* Index in ARGV of the next element to be scanned.
114 This is used for communication to and from the caller
115 and for communication between successive calls to `getopt'.
117 On entry to `getopt', zero means this is the first call; initialize.
119 When `getopt' returns -1, this is the index of the first of the
120 non-option elements that the caller should itself scan.
122 Otherwise, `optind' communicates from one call to the next
123 how much of ARGV has been scanned so far. */
125 /* 1003.2 says this must be 1 before any call. */
128 /* Formerly, initialization of getopt depended on optind==0, which
129 causes problems with re-calling getopt as programs generally don't
132 int __getopt_initialized
= 0;
134 /* The next char to be scanned in the option-element
135 in which the last option character we returned was found.
136 This allows us to pick up the scan where we left off.
138 If this is zero, or a null string, it means resume the scan
139 by advancing to the next ARGV-element. */
141 static char *nextchar
;
143 /* Callers store zero here to inhibit the error message
144 for unrecognized options. */
148 /* Set to an option character which was unrecognized.
149 This must be initialized on some systems to avoid linking in the
150 system's own getopt implementation. */
154 /* Describe how to deal with options that follow non-option ARGV-elements.
156 If the caller did not specify anything,
157 the default is REQUIRE_ORDER if the environment variable
158 POSIXLY_CORRECT is defined, PERMUTE otherwise.
160 REQUIRE_ORDER means don't recognize them as options;
161 stop option processing when the first non-option is seen.
162 This is what Unix does.
163 This mode of operation is selected by either setting the environment
164 variable POSIXLY_CORRECT, or using `+' as the first character
165 of the list of option characters.
167 PERMUTE is the default. We permute the contents of ARGV as we scan,
168 so that eventually all the non-options are at the end. This allows options
169 to be given in any order, even with programs that were not written to
172 RETURN_IN_ORDER is an option available to programs that were written
173 to expect options and other ARGV-elements in any order and that care about
174 the ordering of the two. We describe each non-option ARGV-element
175 as if it were the argument of an option with character code 1.
176 Using `-' as the first character of the list of option characters
177 selects this mode of operation.
179 The special argument `--' forces an end of option-scanning regardless
180 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
181 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
185 REQUIRE_ORDER
, PERMUTE
, RETURN_IN_ORDER
188 /* Value of POSIXLY_CORRECT environment variable. */
189 static char *posixly_correct
;
191 #ifdef __GNU_LIBRARY__
192 /* We want to avoid inclusion of string.h with non-GNU libraries
193 because there are many ways it can cause trouble.
194 On some systems, it contains special magic macros that don't work
197 # define my_index strchr
203 # include <strings.h>
206 /* Avoid depending on library functions or files
207 whose names are inconsistent. */
210 extern char *getenv ();
214 my_index (const char *str
, int chr
)
225 /* If using GCC, we can safely declare strlen this way.
226 If not using GCC, it is ok not to declare it. */
228 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
229 That was relevant to code that was here before. */
230 # if (!defined __STDC__ || !__STDC__) && !defined strlen
231 /* gcc with -traditional declares the built-in strlen to return int,
232 and has done so at least since version 2.4.5. -- rms. */
233 extern int strlen (const char *);
234 # endif /* not __STDC__ */
235 #endif /* __GNUC__ */
237 #endif /* not __GNU_LIBRARY__ */
239 /* Handle permutation of arguments. */
241 /* Describe the part of ARGV that contains non-options that have
242 been skipped. `first_nonopt' is the index in ARGV of the first of them;
243 `last_nonopt' is the index after the last of them. */
245 static int first_nonopt
;
246 static int last_nonopt
;
249 /* Bash 2.0 gives us an environment variable containing flags
250 indicating ARGV elements that should not be considered arguments. */
252 /* Defined in getopt_init.c */
253 extern char *__getopt_nonoption_flags
;
255 static int nonoption_flags_max_len
;
256 static int nonoption_flags_len
;
258 static int original_argc
;
259 static char *const *original_argv
;
261 /* Make sure the environment variable bash 2.0 puts in the environment
262 is valid for the getopt call we must make sure that the ARGV passed
263 to getopt is that one passed to the process. */
264 static void __attribute__ ((unused
))
265 store_args_and_env (int argc
, char *const *argv
)
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 original_argc
= argc
;
270 original_argv
= argv
;
272 # ifdef text_set_element
273 text_set_element (__libc_subinit
, store_args_and_env
);
274 # endif /* text_set_element */
276 # define SWAP_FLAGS(ch1, ch2) \
277 if (nonoption_flags_len > 0) \
279 char __tmp = __getopt_nonoption_flags[ch1]; \
280 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
281 __getopt_nonoption_flags[ch2] = __tmp; \
284 # define SWAP_FLAGS(ch1, ch2)
287 /* Exchange two adjacent subsequences of ARGV.
288 One subsequence is elements [first_nonopt,last_nonopt)
289 which contains all the non-options that have been skipped so far.
290 The other is elements [last_nonopt,optind), which contains all
291 the options processed since those non-options were skipped.
293 `first_nonopt' and `last_nonopt' are relocated so that they describe
294 the new indices of the non-options in ARGV after they are moved. */
296 #if defined __STDC__ && __STDC__
297 static void exchange (char **);
301 exchange (char **argv
)
303 int bottom
= first_nonopt
;
304 int middle
= last_nonopt
;
308 /* Exchange the shorter segment with the far end of the longer segment.
309 That puts the shorter segment into the right place.
310 It leaves the longer segment in the right place overall,
311 but it consists of two parts that need to be swapped next. */
314 /* First make sure the handling of the `__getopt_nonoption_flags'
315 string can work normally. Our top argument must be in the range
317 if (nonoption_flags_len
> 0 && top
>= nonoption_flags_max_len
)
319 /* We must extend the array. The user plays games with us and
320 presents new arguments. */
321 char *new_str
= malloc (top
+ 1);
323 nonoption_flags_len
= nonoption_flags_max_len
= 0;
326 memset (__mempcpy (new_str
, __getopt_nonoption_flags
,
327 nonoption_flags_max_len
),
328 '\0', top
+ 1 - nonoption_flags_max_len
);
329 nonoption_flags_max_len
= top
+ 1;
330 __getopt_nonoption_flags
= new_str
;
335 while (top
> middle
&& middle
> bottom
)
337 if (top
- middle
> middle
- bottom
)
339 /* Bottom segment is the short one. */
340 int len
= middle
- bottom
;
343 /* Swap it with the top part of the top segment. */
344 for (i
= 0; i
< len
; i
++)
346 tem
= argv
[bottom
+ i
];
347 argv
[bottom
+ i
] = argv
[top
- (middle
- bottom
) + i
];
348 argv
[top
- (middle
- bottom
) + i
] = tem
;
349 SWAP_FLAGS (bottom
+ i
, top
- (middle
- bottom
) + i
);
351 /* Exclude the moved bottom segment from further swapping. */
356 /* Top segment is the short one. */
357 int len
= top
- middle
;
360 /* Swap it with the bottom part of the bottom segment. */
361 for (i
= 0; i
< len
; i
++)
363 tem
= argv
[bottom
+ i
];
364 argv
[bottom
+ i
] = argv
[middle
+ i
];
365 argv
[middle
+ i
] = tem
;
366 SWAP_FLAGS (bottom
+ i
, middle
+ i
);
368 /* Exclude the moved top segment from further swapping. */
373 /* Update records for the slots the non-options now occupy. */
375 first_nonopt
+= (optind
- last_nonopt
);
376 last_nonopt
= optind
;
379 /* Initialize the internal data when the first call is made. */
381 #if defined __STDC__ && __STDC__
382 static const char *_getopt_initialize (int, char *const *, const char *);
385 _getopt_initialize (int argc
, char *const *argv
, const char *optstring
)
387 /* Start processing options with ARGV-element 1 (since ARGV-element 0
388 is the program name); the sequence of previously skipped
389 non-option ARGV-elements is empty. */
391 first_nonopt
= last_nonopt
= optind
;
395 posixly_correct
= getenv ("POSIXLY_CORRECT");
397 /* Determine how to handle the ordering of options and nonoptions. */
399 if (optstring
[0] == '-')
401 ordering
= RETURN_IN_ORDER
;
404 else if (optstring
[0] == '+')
406 ordering
= REQUIRE_ORDER
;
409 else if (posixly_correct
!= NULL
)
410 ordering
= REQUIRE_ORDER
;
415 if (posixly_correct
== NULL
416 && argc
== original_argc
&& argv
== original_argv
)
418 if (nonoption_flags_max_len
== 0)
420 if (__getopt_nonoption_flags
== NULL
421 || __getopt_nonoption_flags
[0] == '\0')
422 nonoption_flags_max_len
= -1;
425 const char *orig_str
= __getopt_nonoption_flags
;
426 int len
= nonoption_flags_max_len
= strlen (orig_str
);
427 if (nonoption_flags_max_len
< argc
)
428 nonoption_flags_max_len
= argc
;
429 __getopt_nonoption_flags
=
430 (char *) malloc (nonoption_flags_max_len
);
431 if (__getopt_nonoption_flags
== NULL
)
432 nonoption_flags_max_len
= -1;
434 memset (__mempcpy (__getopt_nonoption_flags
, orig_str
, len
),
435 '\0', nonoption_flags_max_len
- len
);
438 nonoption_flags_len
= nonoption_flags_max_len
;
441 nonoption_flags_len
= 0;
447 /* Scan elements of ARGV (whose length is ARGC) for option characters
450 If an element of ARGV starts with '-', and is not exactly "-" or "--",
451 then it is an option element. The characters of this element
452 (aside from the initial '-') are option characters. If `getopt'
453 is called repeatedly, it returns successively each of the option characters
454 from each of the option elements.
456 If `getopt' finds another option character, it returns that character,
457 updating `optind' and `nextchar' so that the next call to `getopt' can
458 resume the scan with the following option character or ARGV-element.
460 If there are no more option characters, `getopt' returns -1.
461 Then `optind' is the index in ARGV of the first ARGV-element
462 that is not an option. (The ARGV-elements have been permuted
463 so that those that are not options now come last.)
465 OPTSTRING is a string containing the legitimate option characters.
466 If an option character is seen that is not listed in OPTSTRING,
467 return '?' after printing an error message. If you set `opterr' to
468 zero, the error message is suppressed but we still return '?'.
470 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
471 so the following text in the same ARGV-element, or the text of the following
472 ARGV-element, is returned in `optarg'. Two colons mean an option that
473 wants an optional arg; if there is text in the current ARGV-element,
474 it is returned in `optarg', otherwise `optarg' is set to zero.
476 If OPTSTRING starts with `-' or `+', it requests different methods of
477 handling the non-option ARGV-elements.
478 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
480 Long-named options begin with `--' instead of `-'.
481 Their names may be abbreviated as long as the abbreviation is unique
482 or is an exact match for some defined option. If they have an
483 argument, it follows the option name in the same ARGV-element, separated
484 from the option name by a `=', or else the in next ARGV-element.
485 When `getopt' finds a long-named option, it returns 0 if that option's
486 `flag' field is nonzero, the value of the option's `val' field
487 if the `flag' field is zero.
489 The elements of ARGV aren't really const, because we permute them.
490 But we pretend they're const in the prototype to be compatible
493 LONGOPTS is a vector of `struct option' terminated by an
494 element containing a name which is zero.
496 LONGIND returns the index in LONGOPT of the long-named option found.
497 It is only valid when a long-named option has been found by the most
500 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
501 long-named options. */
504 _getopt_internal (int argc
, char *const *argv
, const char *optstring
,
505 const struct option
*longopts
, int *longind
, int long_only
)
509 if (optind
== 0 || !__getopt_initialized
)
512 optind
= 1; /* Don't scan ARGV[0], the program name. */
513 optstring
= _getopt_initialize (argc
, argv
, optstring
);
514 __getopt_initialized
= 1;
517 /* Test whether ARGV[optind] points to a non-option argument.
518 Either it does not have option syntax, or there is an environment flag
519 from the shell indicating it is not an option. The later information
520 is only used when the used in the GNU libc. */
522 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
523 || (optind < nonoption_flags_len \
524 && __getopt_nonoption_flags[optind] == '1'))
526 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
529 if (nextchar
== NULL
|| *nextchar
== '\0')
531 /* Advance to the next ARGV-element. */
533 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
534 moved back by the user (who may also have changed the arguments). */
535 if (last_nonopt
> optind
)
536 last_nonopt
= optind
;
537 if (first_nonopt
> optind
)
538 first_nonopt
= optind
;
540 if (ordering
== PERMUTE
)
542 /* If we have just processed some options following some non-options,
543 exchange them so that the options come first. */
545 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
546 exchange ((char **) argv
);
547 else if (last_nonopt
!= optind
)
548 first_nonopt
= optind
;
550 /* Skip any additional non-options
551 and extend the range of non-options previously skipped. */
553 while (optind
< argc
&& NONOPTION_P
)
555 last_nonopt
= optind
;
558 /* The special ARGV-element `--' means premature end of options.
559 Skip it like a null option,
560 then exchange with previous non-options as if it were an option,
561 then skip everything else like a non-option. */
563 if (optind
!= argc
&& !strcmp (argv
[optind
], "--"))
567 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
568 exchange ((char **) argv
);
569 else if (first_nonopt
== last_nonopt
)
570 first_nonopt
= optind
;
576 /* If we have done all the ARGV-elements, stop the scan
577 and back over any non-options that we skipped and permuted. */
581 /* Set the next-arg-index to point at the non-options
582 that we previously skipped, so the caller will digest them. */
583 if (first_nonopt
!= last_nonopt
)
584 optind
= first_nonopt
;
588 /* If we have come to a non-option and did not permute it,
589 either stop the scan or describe it to the caller and pass it by. */
593 if (ordering
== REQUIRE_ORDER
)
595 optarg
= argv
[optind
++];
599 /* We have found another option-ARGV-element.
600 Skip the initial punctuation. */
602 nextchar
= (argv
[optind
] + 1
603 + (longopts
!= NULL
&& argv
[optind
][1] == '-'));
606 /* Decode the current option-ARGV-element. */
608 /* Check whether the ARGV-element is a long option.
610 If long_only and the ARGV-element has the form "-f", where f is
611 a valid short option, don't consider it an abbreviated form of
612 a long option that starts with f. Otherwise there would be no
613 way to give the -f short option.
615 On the other hand, if there's a long option "fubar" and
616 the ARGV-element is "-fu", do consider that an abbreviation of
617 the long option, just like "--fu", and not "-f" with arg "u".
619 This distinction seems to be the most useful approach. */
622 && (argv
[optind
][1] == '-'
623 || (long_only
&& (argv
[optind
][2] || !my_index (optstring
, argv
[optind
][1])))))
626 const struct option
*p
;
627 const struct option
*pfound
= NULL
;
633 for (nameend
= nextchar
; *nameend
&& *nameend
!= '='; nameend
++)
636 /* Test all long options for either exact match
637 or abbreviated matches. */
638 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
639 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
641 if ((unsigned int) (nameend
- nextchar
)
642 == (unsigned int) strlen (p
->name
))
644 /* Exact match found. */
646 indfound
= option_index
;
650 else if (pfound
== NULL
)
652 /* First nonexact match found. */
654 indfound
= option_index
;
657 /* Second or later nonexact match found. */
664 fprintf (stderr
, _("%s: option `%s' is ambiguous\n"),
665 argv
[0], argv
[optind
]);
666 nextchar
+= strlen (nextchar
);
674 option_index
= indfound
;
678 /* Don't test has_arg with >, because some C compilers don't
679 allow it to be used on enums. */
681 optarg
= nameend
+ 1;
685 if (argv
[optind
- 1][1] == '-')
688 _("%s: option `--%s' doesn't allow an argument\n"),
689 argv
[0], pfound
->name
);
691 /* +option or -option */
693 _("%s: option `%c%s' doesn't allow an argument\n"),
694 argv
[0], argv
[optind
- 1][0], pfound
->name
);
696 nextchar
+= strlen (nextchar
);
698 optopt
= pfound
->val
;
702 else if (pfound
->has_arg
== 1)
705 optarg
= argv
[optind
++];
710 _("%s: option `%s' requires an argument\n"),
711 argv
[0], argv
[optind
- 1]);
712 nextchar
+= strlen (nextchar
);
713 optopt
= pfound
->val
;
714 return optstring
[0] == ':' ? ':' : '?';
717 nextchar
+= strlen (nextchar
);
719 *longind
= option_index
;
722 *(pfound
->flag
) = pfound
->val
;
728 /* Can't find it as a long option. If this is not getopt_long_only,
729 or the option starts with '--' or is not a valid short
730 option, then it's an error.
731 Otherwise interpret it as a short option. */
732 if (!long_only
|| argv
[optind
][1] == '-'
733 || my_index (optstring
, *nextchar
) == NULL
)
737 if (argv
[optind
][1] == '-')
739 fprintf (stderr
, _("%s: unrecognized option `--%s'\n"),
742 /* +option or -option */
743 fprintf (stderr
, _("%s: unrecognized option `%c%s'\n"),
744 argv
[0], argv
[optind
][0], nextchar
);
746 nextchar
= (char *) "";
753 /* Look at and handle the next short option-character. */
756 char c
= *nextchar
++;
757 char *temp
= my_index (optstring
, c
);
759 /* Increment `optind' when we start to process its last character. */
760 if (*nextchar
== '\0')
763 if (temp
== NULL
|| c
== ':')
768 /* 1003.2 specifies the format of this message. */
769 fprintf (stderr
, _("%s: illegal option -- %c\n"),
772 fprintf (stderr
, _("%s: invalid option -- %c\n"),
778 /* Convenience. Treat POSIX -W foo same as long option --foo */
779 if (temp
[0] == 'W' && temp
[1] == ';')
782 const struct option
*p
;
783 const struct option
*pfound
= NULL
;
789 /* This is an option that requires an argument. */
790 if (*nextchar
!= '\0')
793 /* If we end this ARGV-element by taking the rest as an arg,
794 we must advance to the next element now. */
797 else if (optind
== argc
)
801 /* 1003.2 specifies the format of this message. */
802 fprintf (stderr
, _("%s: option requires an argument -- %c\n"),
806 if (optstring
[0] == ':')
813 /* We already incremented `optind' once;
814 increment it again when taking next ARGV-elt as argument. */
815 optarg
= argv
[optind
++];
817 /* optarg is now the argument, see if it's in the
818 table of longopts. */
820 for (nextchar
= nameend
= optarg
; *nameend
&& *nameend
!= '='; nameend
++)
823 /* Test all long options for either exact match
824 or abbreviated matches. */
825 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
826 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
828 if ((unsigned int) (nameend
- nextchar
) == strlen (p
->name
))
830 /* Exact match found. */
832 indfound
= option_index
;
836 else if (pfound
== NULL
)
838 /* First nonexact match found. */
840 indfound
= option_index
;
843 /* Second or later nonexact match found. */
849 fprintf (stderr
, _("%s: option `-W %s' is ambiguous\n"),
850 argv
[0], argv
[optind
]);
851 nextchar
+= strlen (nextchar
);
857 option_index
= indfound
;
860 /* Don't test has_arg with >, because some C compilers don't
861 allow it to be used on enums. */
863 optarg
= nameend
+ 1;
867 fprintf (stderr
, _("\
868 %s: option `-W %s' doesn't allow an argument\n"),
869 argv
[0], pfound
->name
);
871 nextchar
+= strlen (nextchar
);
875 else if (pfound
->has_arg
== 1)
878 optarg
= argv
[optind
++];
883 _("%s: option `%s' requires an argument\n"),
884 argv
[0], argv
[optind
- 1]);
885 nextchar
+= strlen (nextchar
);
886 return optstring
[0] == ':' ? ':' : '?';
889 nextchar
+= strlen (nextchar
);
891 *longind
= option_index
;
894 *(pfound
->flag
) = pfound
->val
;
900 return 'W'; /* Let the application handle it. */
906 /* This is an option that accepts an argument optionally. */
907 if (*nextchar
!= '\0')
918 /* This is an option that requires an argument. */
919 if (*nextchar
!= '\0')
922 /* If we end this ARGV-element by taking the rest as an arg,
923 we must advance to the next element now. */
926 else if (optind
== argc
)
930 /* 1003.2 specifies the format of this message. */
932 _("%s: option requires an argument -- %c\n"),
936 if (optstring
[0] == ':')
942 /* We already incremented `optind' once;
943 increment it again when taking next ARGV-elt as argument. */
944 optarg
= argv
[optind
++];
953 getopt (int argc
, char *const *argv
, const char *optstring
)
955 return _getopt_internal (argc
, argv
, optstring
,
956 (const struct option
*) 0,
961 #endif /* Not ELIDE_CODE. */
965 /* Compile with -DTEST to make an executable for use in testing
966 the above definition of `getopt'. */
969 main (int argc
, char **argv
)
972 int digit_optind
= 0;
976 int this_option_optind
= optind
? optind
: 1;
978 c
= getopt (argc
, argv
, "abc:d:0123456789");
994 if (digit_optind
!= 0 && digit_optind
!= this_option_optind
)
995 printf ("digits occur in two different argv-elements.\n");
996 digit_optind
= this_option_optind
;
997 printf ("option %c\n", c
);
1001 printf ("option a\n");
1005 printf ("option b\n");
1009 printf ("option c with value `%s'\n", optarg
);
1016 printf ("?? getopt returned character code 0%o ??\n", c
);
1022 printf ("non-option ARGV-elements: ");
1023 while (optind
< argc
)
1024 printf ("%s ", argv
[optind
++]);