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
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.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License along
20 with this program; if not, write to the Free Software Foundation,
21 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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
82 /* This is for other GNU distributions with internationalized messages. */
86 #define _(msgid) gettext (msgid)
88 #if defined _LIBC && defined USE_IN_LIBIO
92 #ifndef attribute_hidden
93 # define attribute_hidden
96 /* This version of `getopt' appears to the caller like standard Unix `getopt'
97 but it behaves differently for the user, since it allows the user
98 to intersperse the options with the other arguments.
100 As `getopt' works, it permutes the elements of ARGV so that,
101 when it is done, all the options precede everything else. Thus
102 all application programs are extended to handle flexible argument order.
104 Setting the environment variable POSIXLY_CORRECT disables permutation.
105 Then the behavior is completely standard.
107 GNU application programs can use a third alternative mode in which
108 they can distinguish the relative order of options and other arguments. */
112 /* For communication from `getopt' to the caller.
113 When `getopt' finds an option that takes an argument,
114 the argument value is returned here.
115 Also, when `ordering' is RETURN_IN_ORDER,
116 each non-option ARGV-element is returned here. */
120 /* Index in ARGV of the next element to be scanned.
121 This is used for communication to and from the caller
122 and for communication between successive calls to `getopt'.
124 On entry to `getopt', zero means this is the first call; initialize.
126 When `getopt' returns -1, this is the index of the first of the
127 non-option elements that the caller should itself scan.
129 Otherwise, `optind' communicates from one call to the next
130 how much of ARGV has been scanned so far. */
132 /* 1003.2 says this must be 1 before any call. */
135 /* Formerly, initialization of getopt depended on optind==0, which
136 causes problems with re-calling getopt as programs generally don't
139 int __getopt_initialized attribute_hidden
;
141 /* The next char to be scanned in the option-element
142 in which the last option character we returned was found.
143 This allows us to pick up the scan where we left off.
145 If this is zero, or a null string, it means resume the scan
146 by advancing to the next ARGV-element. */
148 static char *nextchar
;
150 /* Callers store zero here to inhibit the error message
151 for unrecognized options. */
155 /* Set to an option character which was unrecognized.
156 This must be initialized on some systems to avoid linking in the
157 system's own getopt implementation. */
161 /* Describe how to deal with options that follow non-option ARGV-elements.
163 If the caller did not specify anything,
164 the default is REQUIRE_ORDER if the environment variable
165 POSIXLY_CORRECT is defined, PERMUTE otherwise.
167 REQUIRE_ORDER means don't recognize them as options;
168 stop option processing when the first non-option is seen.
169 This is what Unix does.
170 This mode of operation is selected by either setting the environment
171 variable POSIXLY_CORRECT, or using `+' as the first character
172 of the list of option characters.
174 PERMUTE is the default. We permute the contents of ARGV as we scan,
175 so that eventually all the non-options are at the end. This allows options
176 to be given in any order, even with programs that were not written to
179 RETURN_IN_ORDER is an option available to programs that were written
180 to expect options and other ARGV-elements in any order and that care about
181 the ordering of the two. We describe each non-option ARGV-element
182 as if it were the argument of an option with character code 1.
183 Using `-' as the first character of the list of option characters
184 selects this mode of operation.
186 The special argument `--' forces an end of option-scanning regardless
187 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
188 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
192 REQUIRE_ORDER
, PERMUTE
, RETURN_IN_ORDER
195 /* Value of POSIXLY_CORRECT environment variable. */
196 static char *posixly_correct
;
198 #ifdef __GNU_LIBRARY__
199 /* We want to avoid inclusion of string.h with non-GNU libraries
200 because there are many ways it can cause trouble.
201 On some systems, it contains special magic macros that don't work
204 # define my_index strchr
210 # include <strings.h>
213 /* Avoid depending on library functions or files
214 whose names are inconsistent. */
217 extern char *getenv ();
234 /* If using GCC, we can safely declare strlen this way.
235 If not using GCC, it is ok not to declare it. */
237 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
238 That was relevant to code that was here before. */
239 # if (!defined __STDC__ || !__STDC__) && !defined strlen
240 /* gcc with -traditional declares the built-in strlen to return int,
241 and has done so at least since version 2.4.5. -- rms. */
242 extern int strlen (const char *);
243 # endif /* not __STDC__ */
244 #endif /* __GNUC__ */
246 #endif /* not __GNU_LIBRARY__ */
248 /* Handle permutation of arguments. */
250 /* Describe the part of ARGV that contains non-options that have
251 been skipped. `first_nonopt' is the index in ARGV of the first of them;
252 `last_nonopt' is the index after the last of them. */
254 static int first_nonopt
;
255 static int last_nonopt
;
258 /* Stored original parameters.
259 XXX This is no good solution. We should rather copy the args so
260 that we can compare them later. But we must not use malloc(3). */
261 extern int __libc_argc
;
262 extern char **__libc_argv
;
264 /* Bash 2.0 gives us an environment variable containing flags
265 indicating ARGV elements that should not be considered arguments. */
267 # ifdef USE_NONOPTION_FLAGS
268 /* Defined in getopt_init.c */
269 extern char *__getopt_nonoption_flags
;
271 static int nonoption_flags_max_len
;
272 static int nonoption_flags_len
;
275 # ifdef USE_NONOPTION_FLAGS
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 # define SWAP_FLAGS(ch1, ch2)
290 /* Exchange two adjacent subsequences of ARGV.
291 One subsequence is elements [first_nonopt,last_nonopt)
292 which contains all the non-options that have been skipped so far.
293 The other is elements [last_nonopt,optind), which contains all
294 the options processed since those non-options were skipped.
296 `first_nonopt' and `last_nonopt' are relocated so that they describe
297 the new indices of the non-options in ARGV after they are moved. */
299 #if defined __STDC__ && __STDC__
300 static void exchange (char **);
307 int bottom
= first_nonopt
;
308 int middle
= last_nonopt
;
312 /* Exchange the shorter segment with the far end of the longer segment.
313 That puts the shorter segment into the right place.
314 It leaves the longer segment in the right place overall,
315 but it consists of two parts that need to be swapped next. */
317 #if defined _LIBC && defined USE_NONOPTION_FLAGS
318 /* First make sure the handling of the `__getopt_nonoption_flags'
319 string can work normally. Our top argument must be in the range
321 if (nonoption_flags_len
> 0 && top
>= nonoption_flags_max_len
)
323 /* We must extend the array. The user plays games with us and
324 presents new arguments. */
325 char *new_str
= malloc (top
+ 1);
327 nonoption_flags_len
= nonoption_flags_max_len
= 0;
330 memset (__mempcpy (new_str
, __getopt_nonoption_flags
,
331 nonoption_flags_max_len
),
332 '\0', top
+ 1 - nonoption_flags_max_len
);
333 nonoption_flags_max_len
= top
+ 1;
334 __getopt_nonoption_flags
= new_str
;
339 while (top
> middle
&& middle
> bottom
)
341 if (top
- middle
> middle
- bottom
)
343 /* Bottom segment is the short one. */
344 int len
= middle
- bottom
;
347 /* Swap it with the top part of the top segment. */
348 for (i
= 0; i
< len
; i
++)
350 tem
= argv
[bottom
+ i
];
351 argv
[bottom
+ i
] = argv
[top
- (middle
- bottom
) + i
];
352 argv
[top
- (middle
- bottom
) + i
] = tem
;
353 SWAP_FLAGS (bottom
+ i
, top
- (middle
- bottom
) + i
);
355 /* Exclude the moved bottom segment from further swapping. */
360 /* Top segment is the short one. */
361 int len
= top
- middle
;
364 /* Swap it with the bottom part of the bottom segment. */
365 for (i
= 0; i
< len
; i
++)
367 tem
= argv
[bottom
+ i
];
368 argv
[bottom
+ i
] = argv
[middle
+ i
];
369 argv
[middle
+ i
] = tem
;
370 SWAP_FLAGS (bottom
+ i
, middle
+ i
);
372 /* Exclude the moved top segment from further swapping. */
377 /* Update records for the slots the non-options now occupy. */
379 first_nonopt
+= (optind
- last_nonopt
);
380 last_nonopt
= optind
;
383 /* Initialize the internal data when the first call is made. */
385 #if defined __STDC__ && __STDC__
386 static const char *_getopt_initialize (int, char *const *, const char *);
389 _getopt_initialize (argc
, argv
, optstring
)
392 const char *optstring
;
394 /* Start processing options with ARGV-element 1 (since ARGV-element 0
395 is the program name); the sequence of previously skipped
396 non-option ARGV-elements is empty. */
398 first_nonopt
= last_nonopt
= optind
;
402 posixly_correct
= getenv ("POSIXLY_CORRECT");
404 /* Determine how to handle the ordering of options and nonoptions. */
406 if (optstring
[0] == '-')
408 ordering
= RETURN_IN_ORDER
;
411 else if (optstring
[0] == '+')
413 ordering
= REQUIRE_ORDER
;
416 else if (posixly_correct
!= NULL
)
417 ordering
= REQUIRE_ORDER
;
421 #if defined _LIBC && defined USE_NONOPTION_FLAGS
422 if (posixly_correct
== NULL
423 && argc
== __libc_argc
&& argv
== __libc_argv
)
425 if (nonoption_flags_max_len
== 0)
427 if (__getopt_nonoption_flags
== NULL
428 || __getopt_nonoption_flags
[0] == '\0')
429 nonoption_flags_max_len
= -1;
432 const char *orig_str
= __getopt_nonoption_flags
;
433 int len
= nonoption_flags_max_len
= strlen (orig_str
);
434 if (nonoption_flags_max_len
< argc
)
435 nonoption_flags_max_len
= argc
;
436 __getopt_nonoption_flags
=
437 (char *) malloc (nonoption_flags_max_len
);
438 if (__getopt_nonoption_flags
== NULL
)
439 nonoption_flags_max_len
= -1;
441 memset (__mempcpy (__getopt_nonoption_flags
, orig_str
, len
),
442 '\0', nonoption_flags_max_len
- len
);
445 nonoption_flags_len
= nonoption_flags_max_len
;
448 nonoption_flags_len
= 0;
454 /* Scan elements of ARGV (whose length is ARGC) for option characters
457 If an element of ARGV starts with '-', and is not exactly "-" or "--",
458 then it is an option element. The characters of this element
459 (aside from the initial '-') are option characters. If `getopt'
460 is called repeatedly, it returns successively each of the option characters
461 from each of the option elements.
463 If `getopt' finds another option character, it returns that character,
464 updating `optind' and `nextchar' so that the next call to `getopt' can
465 resume the scan with the following option character or ARGV-element.
467 If there are no more option characters, `getopt' returns -1.
468 Then `optind' is the index in ARGV of the first ARGV-element
469 that is not an option. (The ARGV-elements have been permuted
470 so that those that are not options now come last.)
472 OPTSTRING is a string containing the legitimate option characters.
473 If an option character is seen that is not listed in OPTSTRING,
474 return '?' after printing an error message. If you set `opterr' to
475 zero, the error message is suppressed but we still return '?'.
477 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
478 so the following text in the same ARGV-element, or the text of the following
479 ARGV-element, is returned in `optarg'. Two colons mean an option that
480 wants an optional arg; if there is text in the current ARGV-element,
481 it is returned in `optarg', otherwise `optarg' is set to zero.
483 If OPTSTRING starts with `-' or `+', it requests different methods of
484 handling the non-option ARGV-elements.
485 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
487 Long-named options begin with `--' instead of `-'.
488 Their names may be abbreviated as long as the abbreviation is unique
489 or is an exact match for some defined option. If they have an
490 argument, it follows the option name in the same ARGV-element, separated
491 from the option name by a `=', or else the in next ARGV-element.
492 When `getopt' finds a long-named option, it returns 0 if that option's
493 `flag' field is nonzero, the value of the option's `val' field
494 if the `flag' field is zero.
496 The elements of ARGV aren't really const, because we permute them.
497 But we pretend they're const in the prototype to be compatible
500 LONGOPTS is a vector of `struct option' terminated by an
501 element containing a name which is zero.
503 LONGIND returns the index in LONGOPT of the long-named option found.
504 It is only valid when a long-named option has been found by the most
507 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
508 long-named options. */
511 _getopt_internal (argc
, argv
, optstring
, longopts
, longind
, long_only
)
514 const char *optstring
;
515 const struct option
*longopts
;
519 int print_errors
= opterr
;
520 if (optstring
[0] == ':')
528 if (optind
== 0 || !__getopt_initialized
)
531 optind
= 1; /* Don't scan ARGV[0], the program name. */
532 optstring
= _getopt_initialize (argc
, argv
, optstring
);
533 __getopt_initialized
= 1;
536 /* Test whether ARGV[optind] points to a non-option argument.
537 Either it does not have option syntax, or there is an environment flag
538 from the shell indicating it is not an option. The later information
539 is only used when the used in the GNU libc. */
540 #if defined _LIBC && defined USE_NONOPTION_FLAGS
541 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
542 || (optind < nonoption_flags_len \
543 && __getopt_nonoption_flags[optind] == '1'))
545 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
548 if (nextchar
== NULL
|| *nextchar
== '\0')
550 /* Advance to the next ARGV-element. */
552 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
553 moved back by the user (who may also have changed the arguments). */
554 if (last_nonopt
> optind
)
555 last_nonopt
= optind
;
556 if (first_nonopt
> optind
)
557 first_nonopt
= optind
;
559 if (ordering
== PERMUTE
)
561 /* If we have just processed some options following some non-options,
562 exchange them so that the options come first. */
564 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
565 exchange ((char **) argv
);
566 else if (last_nonopt
!= optind
)
567 first_nonopt
= optind
;
569 /* Skip any additional non-options
570 and extend the range of non-options previously skipped. */
572 while (optind
< argc
&& NONOPTION_P
)
574 last_nonopt
= optind
;
577 /* The special ARGV-element `--' means premature end of options.
578 Skip it like a null option,
579 then exchange with previous non-options as if it were an option,
580 then skip everything else like a non-option. */
582 if (optind
!= argc
&& !strcmp (argv
[optind
], "--"))
586 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
587 exchange ((char **) argv
);
588 else if (first_nonopt
== last_nonopt
)
589 first_nonopt
= optind
;
595 /* If we have done all the ARGV-elements, stop the scan
596 and back over any non-options that we skipped and permuted. */
600 /* Set the next-arg-index to point at the non-options
601 that we previously skipped, so the caller will digest them. */
602 if (first_nonopt
!= last_nonopt
)
603 optind
= first_nonopt
;
607 /* If we have come to a non-option and did not permute it,
608 either stop the scan or describe it to the caller and pass it by. */
612 if (ordering
== REQUIRE_ORDER
)
614 optarg
= argv
[optind
++];
618 /* We have found another option-ARGV-element.
619 Skip the initial punctuation. */
621 nextchar
= (argv
[optind
] + 1
622 + (longopts
!= NULL
&& argv
[optind
][1] == '-'));
625 /* Decode the current option-ARGV-element. */
627 /* Check whether the ARGV-element is a long option.
629 If long_only and the ARGV-element has the form "-f", where f is
630 a valid short option, don't consider it an abbreviated form of
631 a long option that starts with f. Otherwise there would be no
632 way to give the -f short option.
634 On the other hand, if there's a long option "fubar" and
635 the ARGV-element is "-fu", do consider that an abbreviation of
636 the long option, just like "--fu", and not "-f" with arg "u".
638 This distinction seems to be the most useful approach. */
641 && (argv
[optind
][1] == '-'
642 || (long_only
&& (argv
[optind
][2] || !my_index (optstring
, argv
[optind
][1])))))
645 const struct option
*p
;
646 const struct option
*pfound
= NULL
;
652 for (nameend
= nextchar
; *nameend
&& *nameend
!= '='; nameend
++)
655 /* Test all long options for either exact match
656 or abbreviated matches. */
657 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
658 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
660 if ((unsigned int) (nameend
- nextchar
)
661 == (unsigned int) strlen (p
->name
))
663 /* Exact match found. */
665 indfound
= option_index
;
669 else if (pfound
== NULL
)
671 /* First nonexact match found. */
673 indfound
= option_index
;
676 || pfound
->has_arg
!= p
->has_arg
677 || pfound
->flag
!= p
->flag
678 || pfound
->val
!= p
->val
)
679 /* Second or later nonexact match found. */
687 #if defined _LIBC && defined USE_IN_LIBIO
690 if (__asprintf (&buf
, _("%s: option `%s' is ambiguous\n"),
691 argv
[0], argv
[optind
]) >= 0)
694 if (_IO_fwide (stderr
, 0) > 0)
695 __fwprintf (stderr
, L
"%s", buf
);
702 fprintf (stderr
, _("%s: option `%s' is ambiguous\n"),
703 argv
[0], argv
[optind
]);
706 nextchar
+= strlen (nextchar
);
714 option_index
= indfound
;
718 /* Don't test has_arg with >, because some C compilers don't
719 allow it to be used on enums. */
721 optarg
= nameend
+ 1;
726 #if defined _LIBC && defined USE_IN_LIBIO
731 if (argv
[optind
- 1][1] == '-')
734 #if defined _LIBC && defined USE_IN_LIBIO
735 n
= __asprintf (&buf
, _("\
736 %s: option `--%s' doesn't allow an argument\n"),
737 argv
[0], pfound
->name
);
739 fprintf (stderr
, _("\
740 %s: option `--%s' doesn't allow an argument\n"),
741 argv
[0], pfound
->name
);
746 /* +option or -option */
747 #if defined _LIBC && defined USE_IN_LIBIO
748 n
= __asprintf (&buf
, _("\
749 %s: option `%c%s' doesn't allow an argument\n"),
750 argv
[0], argv
[optind
- 1][0],
753 fprintf (stderr
, _("\
754 %s: option `%c%s' doesn't allow an argument\n"),
755 argv
[0], argv
[optind
- 1][0], pfound
->name
);
759 #if defined _LIBC && defined USE_IN_LIBIO
762 if (_IO_fwide (stderr
, 0) > 0)
763 __fwprintf (stderr
, L
"%s", buf
);
772 nextchar
+= strlen (nextchar
);
774 optopt
= pfound
->val
;
778 else if (pfound
->has_arg
== 1)
781 optarg
= argv
[optind
++];
786 #if defined _LIBC && defined USE_IN_LIBIO
789 if (__asprintf (&buf
, _("\
790 %s: option `%s' requires an argument\n"),
791 argv
[0], argv
[optind
- 1]) >= 0)
793 if (_IO_fwide (stderr
, 0) > 0)
794 __fwprintf (stderr
, L
"%s", buf
);
802 _("%s: option `%s' requires an argument\n"),
803 argv
[0], argv
[optind
- 1]);
806 nextchar
+= strlen (nextchar
);
807 optopt
= pfound
->val
;
808 return optstring
[0] == ':' ? ':' : '?';
811 nextchar
+= strlen (nextchar
);
813 *longind
= option_index
;
816 *(pfound
->flag
) = pfound
->val
;
822 /* Can't find it as a long option. If this is not getopt_long_only,
823 or the option starts with '--' or is not a valid short
824 option, then it's an error.
825 Otherwise interpret it as a short option. */
826 if (!long_only
|| argv
[optind
][1] == '-'
827 || my_index (optstring
, *nextchar
) == NULL
)
831 #if defined _LIBC && defined USE_IN_LIBIO
836 if (argv
[optind
][1] == '-')
839 #if defined _LIBC && defined USE_IN_LIBIO
840 n
= __asprintf (&buf
, _("%s: unrecognized option `--%s'\n"),
843 fprintf (stderr
, _("%s: unrecognized option `--%s'\n"),
849 /* +option or -option */
850 #if defined _LIBC && defined USE_IN_LIBIO
851 n
= __asprintf (&buf
, _("%s: unrecognized option `%c%s'\n"),
852 argv
[0], argv
[optind
][0], nextchar
);
854 fprintf (stderr
, _("%s: unrecognized option `%c%s'\n"),
855 argv
[0], argv
[optind
][0], nextchar
);
859 #if defined _LIBC && defined USE_IN_LIBIO
862 if (_IO_fwide (stderr
, 0) > 0)
863 __fwprintf (stderr
, L
"%s", buf
);
871 nextchar
= (char *) "";
878 /* Look at and handle the next short option-character. */
881 char c
= *nextchar
++;
882 char *temp
= my_index (optstring
, c
);
884 /* Increment `optind' when we start to process its last character. */
885 if (*nextchar
== '\0')
888 if (temp
== NULL
|| c
== ':')
892 #if defined _LIBC && defined USE_IN_LIBIO
899 /* 1003.2 specifies the format of this message. */
900 #if defined _LIBC && defined USE_IN_LIBIO
901 n
= __asprintf (&buf
, _("%s: illegal option -- %c\n"),
904 fprintf (stderr
, _("%s: illegal option -- %c\n"), argv
[0], c
);
909 #if defined _LIBC && defined USE_IN_LIBIO
910 n
= __asprintf (&buf
, _("%s: invalid option -- %c\n"),
913 fprintf (stderr
, _("%s: invalid option -- %c\n"), argv
[0], c
);
917 #if defined _LIBC && defined USE_IN_LIBIO
920 if (_IO_fwide (stderr
, 0) > 0)
921 __fwprintf (stderr
, L
"%s", buf
);
932 /* Convenience. Treat POSIX -W foo same as long option --foo */
933 if (temp
[0] == 'W' && temp
[1] == ';')
936 const struct option
*p
;
937 const struct option
*pfound
= NULL
;
943 /* This is an option that requires an argument. */
944 if (*nextchar
!= '\0')
947 /* If we end this ARGV-element by taking the rest as an arg,
948 we must advance to the next element now. */
951 else if (optind
== argc
)
955 /* 1003.2 specifies the format of this message. */
956 #if defined _LIBC && defined USE_IN_LIBIO
959 if (__asprintf (&buf
,
960 _("%s: option requires an argument -- %c\n"),
963 if (_IO_fwide (stderr
, 0) > 0)
964 __fwprintf (stderr
, L
"%s", buf
);
971 fprintf (stderr
, _("%s: option requires an argument -- %c\n"),
976 if (optstring
[0] == ':')
983 /* We already incremented `optind' once;
984 increment it again when taking next ARGV-elt as argument. */
985 optarg
= argv
[optind
++];
987 /* optarg is now the argument, see if it's in the
988 table of longopts. */
990 for (nextchar
= nameend
= optarg
; *nameend
&& *nameend
!= '='; nameend
++)
993 /* Test all long options for either exact match
994 or abbreviated matches. */
995 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
996 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
998 if ((unsigned int) (nameend
- nextchar
) == strlen (p
->name
))
1000 /* Exact match found. */
1002 indfound
= option_index
;
1006 else if (pfound
== NULL
)
1008 /* First nonexact match found. */
1010 indfound
= option_index
;
1013 /* Second or later nonexact match found. */
1016 if (ambig
&& !exact
)
1020 #if defined _LIBC && defined USE_IN_LIBIO
1023 if (__asprintf (&buf
, _("%s: option `-W %s' is ambiguous\n"),
1024 argv
[0], argv
[optind
]) >= 0)
1026 if (_IO_fwide (stderr
, 0) > 0)
1027 __fwprintf (stderr
, L
"%s", buf
);
1029 fputs (buf
, stderr
);
1034 fprintf (stderr
, _("%s: option `-W %s' is ambiguous\n"),
1035 argv
[0], argv
[optind
]);
1038 nextchar
+= strlen (nextchar
);
1044 option_index
= indfound
;
1047 /* Don't test has_arg with >, because some C compilers don't
1048 allow it to be used on enums. */
1049 if (pfound
->has_arg
)
1050 optarg
= nameend
+ 1;
1055 #if defined _LIBC && defined USE_IN_LIBIO
1058 if (__asprintf (&buf
, _("\
1059 %s: option `-W %s' doesn't allow an argument\n"),
1060 argv
[0], pfound
->name
) >= 0)
1062 if (_IO_fwide (stderr
, 0) > 0)
1063 __fwprintf (stderr
, L
"%s", buf
);
1065 fputs (buf
, stderr
);
1070 fprintf (stderr
, _("\
1071 %s: option `-W %s' doesn't allow an argument\n"),
1072 argv
[0], pfound
->name
);
1076 nextchar
+= strlen (nextchar
);
1080 else if (pfound
->has_arg
== 1)
1083 optarg
= argv
[optind
++];
1088 #if defined _LIBC && defined USE_IN_LIBIO
1091 if (__asprintf (&buf
, _("\
1092 %s: option `%s' requires an argument\n"),
1093 argv
[0], argv
[optind
- 1]) >= 0)
1095 if (_IO_fwide (stderr
, 0) > 0)
1096 __fwprintf (stderr
, L
"%s", buf
);
1098 fputs (buf
, stderr
);
1104 _("%s: option `%s' requires an argument\n"),
1105 argv
[0], argv
[optind
- 1]);
1108 nextchar
+= strlen (nextchar
);
1109 return optstring
[0] == ':' ? ':' : '?';
1112 nextchar
+= strlen (nextchar
);
1113 if (longind
!= NULL
)
1114 *longind
= option_index
;
1117 *(pfound
->flag
) = pfound
->val
;
1123 return 'W'; /* Let the application handle it. */
1129 /* This is an option that accepts an argument optionally. */
1130 if (*nextchar
!= '\0')
1141 /* This is an option that requires an argument. */
1142 if (*nextchar
!= '\0')
1145 /* If we end this ARGV-element by taking the rest as an arg,
1146 we must advance to the next element now. */
1149 else if (optind
== argc
)
1153 /* 1003.2 specifies the format of this message. */
1154 #if defined _LIBC && defined USE_IN_LIBIO
1157 if (__asprintf (&buf
, _("\
1158 %s: option requires an argument -- %c\n"),
1161 if (_IO_fwide (stderr
, 0) > 0)
1162 __fwprintf (stderr
, L
"%s", buf
);
1164 fputs (buf
, stderr
);
1170 _("%s: option requires an argument -- %c\n"),
1175 if (optstring
[0] == ':')
1181 /* We already incremented `optind' once;
1182 increment it again when taking next ARGV-elt as argument. */
1183 optarg
= argv
[optind
++];
1192 getopt (argc
, argv
, optstring
)
1195 const char *optstring
;
1197 return _getopt_internal (argc
, argv
, optstring
,
1198 (const struct option
*) 0,
1203 #endif /* Not ELIDE_CODE. */
1207 /* Compile with -DTEST to make an executable for use in testing
1208 the above definition of `getopt'. */
1216 int digit_optind
= 0;
1220 int this_option_optind
= optind
? optind
: 1;
1222 c
= getopt (argc
, argv
, "abc:d:0123456789");
1238 if (digit_optind
!= 0 && digit_optind
!= this_option_optind
)
1239 printf ("digits occur in two different argv-elements.\n");
1240 digit_optind
= this_option_optind
;
1241 printf ("option %c\n", c
);
1245 printf ("option a\n");
1249 printf ("option b\n");
1253 printf ("option c with value `%s'\n", optarg
);
1260 printf ("?? getopt returned character code 0%o ??\n", c
);
1266 printf ("non-option ARGV-elements: ");
1267 while (optind
< argc
)
1268 printf ("%s ", argv
[optind
++]);