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) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001,2002,2003
6 Free Software Foundation, Inc.
7 This file is part of the GNU C Library.
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.
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.
19 You should have received a copy of the GNU Lesser General Public
20 License along with the GNU C Library; if not, write to the Free
21 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
24 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
25 Ditto for AIX 3.2 and <stdlib.h>. */
34 #if !defined __STDC__ || !__STDC__
35 /* This is a separate conditional since some stdc systems
36 reject `defined (const)'. */
44 /* Comment out all this code if we are using the GNU C Library, and are not
45 actually compiling the library itself. This code is part of the GNU C
46 Library, but also included in many other GNU distributions. Compiling
47 and linking in this code is a waste when using the GNU C library
48 (especially if it is a shared library). Rather than having every GNU
49 program understand `configure --with-gnu-libc' and omit the object files,
50 it is simpler to just do this in the source for each such file. */
52 #define GETOPT_INTERFACE_VERSION 2
53 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
54 # include <gnu-versions.h>
55 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
63 /* This needs to come after some library #include
64 to get __GNU_LIBRARY__ defined. */
65 #ifdef __GNU_LIBRARY__
66 /* Don't include stdlib.h for non-GNU C libraries because some of them
67 contain conflicting prototypes for getopt. */
70 #endif /* GNU C library. */
74 # if HAVE_STRING_H - 0
80 /* This is for other GNU distributions with internationalized messages. */
81 # if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
84 # define _(msgid) gettext (msgid)
87 # define _(msgid) (msgid)
89 # if defined _LIBC && defined USE_IN_LIBIO
94 #ifndef attribute_hidden
95 # define attribute_hidden
98 /* This version of `getopt' appears to the caller like standard Unix `getopt'
99 but it behaves differently for the user, since it allows the user
100 to intersperse the options with the other arguments.
102 As `getopt' works, it permutes the elements of ARGV so that,
103 when it is done, all the options precede everything else. Thus
104 all application programs are extended to handle flexible argument order.
106 Setting the environment variable POSIXLY_CORRECT disables permutation.
107 Then the behavior is completely standard.
109 GNU application programs can use a third alternative mode in which
110 they can distinguish the relative order of options and other arguments. */
114 /* For communication from `getopt' to the caller.
115 When `getopt' finds an option that takes an argument,
116 the argument value is returned here.
117 Also, when `ordering' is RETURN_IN_ORDER,
118 each non-option ARGV-element is returned here. */
122 /* Index in ARGV of the next element to be scanned.
123 This is used for communication to and from the caller
124 and for communication between successive calls to `getopt'.
126 On entry to `getopt', zero means this is the first call; initialize.
128 When `getopt' returns -1, this is the index of the first of the
129 non-option elements that the caller should itself scan.
131 Otherwise, `optind' communicates from one call to the next
132 how much of ARGV has been scanned so far. */
134 /* 1003.2 says this must be 1 before any call. */
137 /* Formerly, initialization of getopt depended on optind==0, which
138 causes problems with re-calling getopt as programs generally don't
141 int __getopt_initialized attribute_hidden
;
143 /* The next char to be scanned in the option-element
144 in which the last option character we returned was found.
145 This allows us to pick up the scan where we left off.
147 If this is zero, or a null string, it means resume the scan
148 by advancing to the next ARGV-element. */
150 static char *nextchar
;
152 /* Callers store zero here to inhibit the error message
153 for unrecognized options. */
157 /* Set to an option character which was unrecognized.
158 This must be initialized on some systems to avoid linking in the
159 system's own getopt implementation. */
163 /* Describe how to deal with options that follow non-option ARGV-elements.
165 If the caller did not specify anything,
166 the default is REQUIRE_ORDER if the environment variable
167 POSIXLY_CORRECT is defined, PERMUTE otherwise.
169 REQUIRE_ORDER means don't recognize them as options;
170 stop option processing when the first non-option is seen.
171 This is what Unix does.
172 This mode of operation is selected by either setting the environment
173 variable POSIXLY_CORRECT, or using `+' as the first character
174 of the list of option characters.
176 PERMUTE is the default. We permute the contents of ARGV as we scan,
177 so that eventually all the non-options are at the end. This allows options
178 to be given in any order, even with programs that were not written to
181 RETURN_IN_ORDER is an option available to programs that were written
182 to expect options and other ARGV-elements in any order and that care about
183 the ordering of the two. We describe each non-option ARGV-element
184 as if it were the argument of an option with character code 1.
185 Using `-' as the first character of the list of option characters
186 selects this mode of operation.
188 The special argument `--' forces an end of option-scanning regardless
189 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
190 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
194 REQUIRE_ORDER
, PERMUTE
, RETURN_IN_ORDER
197 /* Value of POSIXLY_CORRECT environment variable. */
198 static char *posixly_correct
;
200 #ifdef __GNU_LIBRARY__
201 /* We want to avoid inclusion of string.h with non-GNU libraries
202 because there are many ways it can cause trouble.
203 On some systems, it contains special magic macros that don't work
206 # define my_index strchr
212 # include <strings.h>
215 /* Avoid depending on library functions or files
216 whose names are inconsistent. */
219 extern char *getenv ();
236 /* If using GCC, we can safely declare strlen this way.
237 If not using GCC, it is ok not to declare it. */
239 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
240 That was relevant to code that was here before. */
241 # if (!defined __STDC__ || !__STDC__) && !defined strlen
242 /* gcc with -traditional declares the built-in strlen to return int,
243 and has done so at least since version 2.4.5. -- rms. */
244 extern int strlen (const char *);
245 # endif /* not __STDC__ */
246 #endif /* __GNUC__ */
248 #endif /* not __GNU_LIBRARY__ */
250 /* Handle permutation of arguments. */
252 /* Describe the part of ARGV that contains non-options that have
253 been skipped. `first_nonopt' is the index in ARGV of the first of them;
254 `last_nonopt' is the index after the last of them. */
256 static int first_nonopt
;
257 static int last_nonopt
;
260 /* Stored original parameters.
261 XXX This is no good solution. We should rather copy the args so
262 that we can compare them later. But we must not use malloc(3). */
263 extern int __libc_argc
;
264 extern char **__libc_argv
;
266 /* Bash 2.0 gives us an environment variable containing flags
267 indicating ARGV elements that should not be considered arguments. */
269 # ifdef USE_NONOPTION_FLAGS
270 /* Defined in getopt_init.c */
271 extern char *__getopt_nonoption_flags
;
273 static int nonoption_flags_max_len
;
274 static int nonoption_flags_len
;
277 # ifdef USE_NONOPTION_FLAGS
278 # define SWAP_FLAGS(ch1, ch2) \
279 if (nonoption_flags_len > 0) \
281 char __tmp = __getopt_nonoption_flags[ch1]; \
282 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
283 __getopt_nonoption_flags[ch2] = __tmp; \
286 # define SWAP_FLAGS(ch1, ch2)
289 # define SWAP_FLAGS(ch1, ch2)
292 /* Exchange two adjacent subsequences of ARGV.
293 One subsequence is elements [first_nonopt,last_nonopt)
294 which contains all the non-options that have been skipped so far.
295 The other is elements [last_nonopt,optind), which contains all
296 the options processed since those non-options were skipped.
298 `first_nonopt' and `last_nonopt' are relocated so that they describe
299 the new indices of the non-options in ARGV after they are moved. */
301 #if defined __STDC__ && __STDC__
302 static void exchange (char **);
309 int bottom
= first_nonopt
;
310 int middle
= last_nonopt
;
314 /* Exchange the shorter segment with the far end of the longer segment.
315 That puts the shorter segment into the right place.
316 It leaves the longer segment in the right place overall,
317 but it consists of two parts that need to be swapped next. */
319 #if defined _LIBC && defined USE_NONOPTION_FLAGS
320 /* First make sure the handling of the `__getopt_nonoption_flags'
321 string can work normally. Our top argument must be in the range
323 if (nonoption_flags_len
> 0 && top
>= nonoption_flags_max_len
)
325 /* We must extend the array. The user plays games with us and
326 presents new arguments. */
327 char *new_str
= malloc (top
+ 1);
329 nonoption_flags_len
= nonoption_flags_max_len
= 0;
332 memset (__mempcpy (new_str
, __getopt_nonoption_flags
,
333 nonoption_flags_max_len
),
334 '\0', top
+ 1 - nonoption_flags_max_len
);
335 nonoption_flags_max_len
= top
+ 1;
336 __getopt_nonoption_flags
= new_str
;
341 while (top
> middle
&& middle
> bottom
)
343 if (top
- middle
> middle
- bottom
)
345 /* Bottom segment is the short one. */
346 int len
= middle
- bottom
;
349 /* Swap it with the top part of the top segment. */
350 for (i
= 0; i
< len
; i
++)
352 tem
= argv
[bottom
+ i
];
353 argv
[bottom
+ i
] = argv
[top
- (middle
- bottom
) + i
];
354 argv
[top
- (middle
- bottom
) + i
] = tem
;
355 SWAP_FLAGS (bottom
+ i
, top
- (middle
- bottom
) + i
);
357 /* Exclude the moved bottom segment from further swapping. */
362 /* Top segment is the short one. */
363 int len
= top
- middle
;
366 /* Swap it with the bottom part of the bottom segment. */
367 for (i
= 0; i
< len
; i
++)
369 tem
= argv
[bottom
+ i
];
370 argv
[bottom
+ i
] = argv
[middle
+ i
];
371 argv
[middle
+ i
] = tem
;
372 SWAP_FLAGS (bottom
+ i
, middle
+ i
);
374 /* Exclude the moved top segment from further swapping. */
379 /* Update records for the slots the non-options now occupy. */
381 first_nonopt
+= (optind
- last_nonopt
);
382 last_nonopt
= optind
;
385 /* Initialize the internal data when the first call is made. */
387 #if defined __STDC__ && __STDC__
388 static const char *_getopt_initialize (int, char *const *, const char *);
391 _getopt_initialize (argc
, argv
, optstring
)
394 const char *optstring
;
396 /* Start processing options with ARGV-element 1 (since ARGV-element 0
397 is the program name); the sequence of previously skipped
398 non-option ARGV-elements is empty. */
400 first_nonopt
= last_nonopt
= optind
;
404 posixly_correct
= getenv ("POSIXLY_CORRECT");
406 /* Determine how to handle the ordering of options and nonoptions. */
408 if (optstring
[0] == '-')
410 ordering
= RETURN_IN_ORDER
;
413 else if (optstring
[0] == '+')
415 ordering
= REQUIRE_ORDER
;
418 else if (posixly_correct
!= NULL
)
419 ordering
= REQUIRE_ORDER
;
423 #if defined _LIBC && defined USE_NONOPTION_FLAGS
424 if (posixly_correct
== NULL
425 && argc
== __libc_argc
&& argv
== __libc_argv
)
427 if (nonoption_flags_max_len
== 0)
429 if (__getopt_nonoption_flags
== NULL
430 || __getopt_nonoption_flags
[0] == '\0')
431 nonoption_flags_max_len
= -1;
434 const char *orig_str
= __getopt_nonoption_flags
;
435 int len
= nonoption_flags_max_len
= strlen (orig_str
);
436 if (nonoption_flags_max_len
< argc
)
437 nonoption_flags_max_len
= argc
;
438 __getopt_nonoption_flags
=
439 (char *) malloc (nonoption_flags_max_len
);
440 if (__getopt_nonoption_flags
== NULL
)
441 nonoption_flags_max_len
= -1;
443 memset (__mempcpy (__getopt_nonoption_flags
, orig_str
, len
),
444 '\0', nonoption_flags_max_len
- len
);
447 nonoption_flags_len
= nonoption_flags_max_len
;
450 nonoption_flags_len
= 0;
456 /* Scan elements of ARGV (whose length is ARGC) for option characters
459 If an element of ARGV starts with '-', and is not exactly "-" or "--",
460 then it is an option element. The characters of this element
461 (aside from the initial '-') are option characters. If `getopt'
462 is called repeatedly, it returns successively each of the option characters
463 from each of the option elements.
465 If `getopt' finds another option character, it returns that character,
466 updating `optind' and `nextchar' so that the next call to `getopt' can
467 resume the scan with the following option character or ARGV-element.
469 If there are no more option characters, `getopt' returns -1.
470 Then `optind' is the index in ARGV of the first ARGV-element
471 that is not an option. (The ARGV-elements have been permuted
472 so that those that are not options now come last.)
474 OPTSTRING is a string containing the legitimate option characters.
475 If an option character is seen that is not listed in OPTSTRING,
476 return '?' after printing an error message. If you set `opterr' to
477 zero, the error message is suppressed but we still return '?'.
479 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
480 so the following text in the same ARGV-element, or the text of the following
481 ARGV-element, is returned in `optarg'. Two colons mean an option that
482 wants an optional arg; if there is text in the current ARGV-element,
483 it is returned in `optarg', otherwise `optarg' is set to zero.
485 If OPTSTRING starts with `-' or `+', it requests different methods of
486 handling the non-option ARGV-elements.
487 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
489 Long-named options begin with `--' instead of `-'.
490 Their names may be abbreviated as long as the abbreviation is unique
491 or is an exact match for some defined option. If they have an
492 argument, it follows the option name in the same ARGV-element, separated
493 from the option name by a `=', or else the in next ARGV-element.
494 When `getopt' finds a long-named option, it returns 0 if that option's
495 `flag' field is nonzero, the value of the option's `val' field
496 if the `flag' field is zero.
498 The elements of ARGV aren't really const, because we permute them.
499 But we pretend they're const in the prototype to be compatible
502 LONGOPTS is a vector of `struct option' terminated by an
503 element containing a name which is zero.
505 LONGIND returns the index in LONGOPT of the long-named option found.
506 It is only valid when a long-named option has been found by the most
509 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
510 long-named options. */
513 _getopt_internal (argc
, argv
, optstring
, longopts
, longind
, long_only
)
516 const char *optstring
;
517 const struct option
*longopts
;
521 int print_errors
= opterr
;
522 if (optstring
[0] == ':')
530 if (optind
== 0 || !__getopt_initialized
)
533 optind
= 1; /* Don't scan ARGV[0], the program name. */
534 optstring
= _getopt_initialize (argc
, argv
, optstring
);
535 __getopt_initialized
= 1;
538 /* Test whether ARGV[optind] points to a non-option argument.
539 Either it does not have option syntax, or there is an environment flag
540 from the shell indicating it is not an option. The later information
541 is only used when the used in the GNU libc. */
542 #if defined _LIBC && defined USE_NONOPTION_FLAGS
543 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
544 || (optind < nonoption_flags_len \
545 && __getopt_nonoption_flags[optind] == '1'))
547 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
550 if (nextchar
== NULL
|| *nextchar
== '\0')
552 /* Advance to the next ARGV-element. */
554 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
555 moved back by the user (who may also have changed the arguments). */
556 if (last_nonopt
> optind
)
557 last_nonopt
= optind
;
558 if (first_nonopt
> optind
)
559 first_nonopt
= optind
;
561 if (ordering
== PERMUTE
)
563 /* If we have just processed some options following some non-options,
564 exchange them so that the options come first. */
566 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
567 exchange ((char **) argv
);
568 else if (last_nonopt
!= optind
)
569 first_nonopt
= optind
;
571 /* Skip any additional non-options
572 and extend the range of non-options previously skipped. */
574 while (optind
< argc
&& NONOPTION_P
)
576 last_nonopt
= optind
;
579 /* The special ARGV-element `--' means premature end of options.
580 Skip it like a null option,
581 then exchange with previous non-options as if it were an option,
582 then skip everything else like a non-option. */
584 if (optind
!= argc
&& !strcmp (argv
[optind
], "--"))
588 if (first_nonopt
!= last_nonopt
&& last_nonopt
!= optind
)
589 exchange ((char **) argv
);
590 else if (first_nonopt
== last_nonopt
)
591 first_nonopt
= optind
;
597 /* If we have done all the ARGV-elements, stop the scan
598 and back over any non-options that we skipped and permuted. */
602 /* Set the next-arg-index to point at the non-options
603 that we previously skipped, so the caller will digest them. */
604 if (first_nonopt
!= last_nonopt
)
605 optind
= first_nonopt
;
609 /* If we have come to a non-option and did not permute it,
610 either stop the scan or describe it to the caller and pass it by. */
614 if (ordering
== REQUIRE_ORDER
)
616 optarg
= argv
[optind
++];
620 /* We have found another option-ARGV-element.
621 Skip the initial punctuation. */
623 nextchar
= (argv
[optind
] + 1
624 + (longopts
!= NULL
&& argv
[optind
][1] == '-'));
627 /* Decode the current option-ARGV-element. */
629 /* Check whether the ARGV-element is a long option.
631 If long_only and the ARGV-element has the form "-f", where f is
632 a valid short option, don't consider it an abbreviated form of
633 a long option that starts with f. Otherwise there would be no
634 way to give the -f short option.
636 On the other hand, if there's a long option "fubar" and
637 the ARGV-element is "-fu", do consider that an abbreviation of
638 the long option, just like "--fu", and not "-f" with arg "u".
640 This distinction seems to be the most useful approach. */
643 && (argv
[optind
][1] == '-'
644 || (long_only
&& (argv
[optind
][2] || !my_index (optstring
, argv
[optind
][1])))))
647 const struct option
*p
;
648 const struct option
*pfound
= NULL
;
654 for (nameend
= nextchar
; *nameend
&& *nameend
!= '='; nameend
++)
657 /* Test all long options for either exact match
658 or abbreviated matches. */
659 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
660 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
662 if ((unsigned int) (nameend
- nextchar
)
663 == (unsigned int) strlen (p
->name
))
665 /* Exact match found. */
667 indfound
= option_index
;
671 else if (pfound
== NULL
)
673 /* First nonexact match found. */
675 indfound
= option_index
;
678 || pfound
->has_arg
!= p
->has_arg
679 || pfound
->flag
!= p
->flag
680 || pfound
->val
!= p
->val
)
681 /* Second or later nonexact match found. */
689 #if defined _LIBC && defined USE_IN_LIBIO
692 if (__asprintf (&buf
, _("%s: option `%s' is ambiguous\n"),
693 argv
[0], argv
[optind
]) >= 0)
695 _IO_flockfile (stderr
);
697 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
698 ((_IO_FILE
*) stderr
)->_flags2
|= _IO_FLAGS2_NOTCANCEL
;
700 if (_IO_fwide (stderr
, 0) > 0)
701 __fwprintf (stderr
, L
"%s", buf
);
705 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
706 _IO_funlockfile (stderr
);
711 fprintf (stderr
, _("%s: option `%s' is ambiguous\n"),
712 argv
[0], argv
[optind
]);
715 nextchar
+= strlen (nextchar
);
723 option_index
= indfound
;
727 /* Don't test has_arg with >, because some C compilers don't
728 allow it to be used on enums. */
730 optarg
= nameend
+ 1;
735 #if defined _LIBC && defined USE_IN_LIBIO
740 if (argv
[optind
- 1][1] == '-')
743 #if defined _LIBC && defined USE_IN_LIBIO
744 n
= __asprintf (&buf
, _("\
745 %s: option `--%s' doesn't allow an argument\n"),
746 argv
[0], pfound
->name
);
748 fprintf (stderr
, _("\
749 %s: option `--%s' doesn't allow an argument\n"),
750 argv
[0], pfound
->name
);
755 /* +option or -option */
756 #if defined _LIBC && defined USE_IN_LIBIO
757 n
= __asprintf (&buf
, _("\
758 %s: option `%c%s' doesn't allow an argument\n"),
759 argv
[0], argv
[optind
- 1][0],
762 fprintf (stderr
, _("\
763 %s: option `%c%s' doesn't allow an argument\n"),
764 argv
[0], argv
[optind
- 1][0], pfound
->name
);
768 #if defined _LIBC && defined USE_IN_LIBIO
771 _IO_flockfile (stderr
);
773 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
774 ((_IO_FILE
*) stderr
)->_flags2
775 |= _IO_FLAGS2_NOTCANCEL
;
777 if (_IO_fwide (stderr
, 0) > 0)
778 __fwprintf (stderr
, L
"%s", buf
);
782 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
783 _IO_funlockfile (stderr
);
790 nextchar
+= strlen (nextchar
);
792 optopt
= pfound
->val
;
796 else if (pfound
->has_arg
== 1)
799 optarg
= argv
[optind
++];
804 #if defined _LIBC && defined USE_IN_LIBIO
807 if (__asprintf (&buf
, _("\
808 %s: option `%s' requires an argument\n"),
809 argv
[0], argv
[optind
- 1]) >= 0)
811 _IO_flockfile (stderr
);
813 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
814 ((_IO_FILE
*) stderr
)->_flags2
815 |= _IO_FLAGS2_NOTCANCEL
;
817 if (_IO_fwide (stderr
, 0) > 0)
818 __fwprintf (stderr
, L
"%s", buf
);
822 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
823 _IO_funlockfile (stderr
);
829 _("%s: option `%s' requires an argument\n"),
830 argv
[0], argv
[optind
- 1]);
833 nextchar
+= strlen (nextchar
);
834 optopt
= pfound
->val
;
835 return optstring
[0] == ':' ? ':' : '?';
838 nextchar
+= strlen (nextchar
);
840 *longind
= option_index
;
843 *(pfound
->flag
) = pfound
->val
;
849 /* Can't find it as a long option. If this is not getopt_long_only,
850 or the option starts with '--' or is not a valid short
851 option, then it's an error.
852 Otherwise interpret it as a short option. */
853 if (!long_only
|| argv
[optind
][1] == '-'
854 || my_index (optstring
, *nextchar
) == NULL
)
858 #if defined _LIBC && defined USE_IN_LIBIO
863 if (argv
[optind
][1] == '-')
866 #if defined _LIBC && defined USE_IN_LIBIO
867 n
= __asprintf (&buf
, _("%s: unrecognized option `--%s'\n"),
870 fprintf (stderr
, _("%s: unrecognized option `--%s'\n"),
876 /* +option or -option */
877 #if defined _LIBC && defined USE_IN_LIBIO
878 n
= __asprintf (&buf
, _("%s: unrecognized option `%c%s'\n"),
879 argv
[0], argv
[optind
][0], nextchar
);
881 fprintf (stderr
, _("%s: unrecognized option `%c%s'\n"),
882 argv
[0], argv
[optind
][0], nextchar
);
886 #if defined _LIBC && defined USE_IN_LIBIO
889 _IO_flockfile (stderr
);
891 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
892 ((_IO_FILE
*) stderr
)->_flags2
|= _IO_FLAGS2_NOTCANCEL
;
894 if (_IO_fwide (stderr
, 0) > 0)
895 __fwprintf (stderr
, L
"%s", buf
);
899 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
900 _IO_funlockfile (stderr
);
906 nextchar
= (char *) "";
913 /* Look at and handle the next short option-character. */
916 char c
= *nextchar
++;
917 char *temp
= my_index (optstring
, c
);
919 /* Increment `optind' when we start to process its last character. */
920 if (*nextchar
== '\0')
923 if (temp
== NULL
|| c
== ':')
927 #if defined _LIBC && defined USE_IN_LIBIO
934 /* 1003.2 specifies the format of this message. */
935 #if defined _LIBC && defined USE_IN_LIBIO
936 n
= __asprintf (&buf
, _("%s: illegal option -- %c\n"),
939 fprintf (stderr
, _("%s: illegal option -- %c\n"), argv
[0], c
);
944 #if defined _LIBC && defined USE_IN_LIBIO
945 n
= __asprintf (&buf
, _("%s: invalid option -- %c\n"),
948 fprintf (stderr
, _("%s: invalid option -- %c\n"), argv
[0], c
);
952 #if defined _LIBC && defined USE_IN_LIBIO
955 _IO_flockfile (stderr
);
957 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
958 ((_IO_FILE
*) stderr
)->_flags2
|= _IO_FLAGS2_NOTCANCEL
;
960 if (_IO_fwide (stderr
, 0) > 0)
961 __fwprintf (stderr
, L
"%s", buf
);
965 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
966 _IO_funlockfile (stderr
);
975 /* Convenience. Treat POSIX -W foo same as long option --foo */
976 if (temp
[0] == 'W' && temp
[1] == ';')
979 const struct option
*p
;
980 const struct option
*pfound
= NULL
;
986 /* This is an option that requires an argument. */
987 if (*nextchar
!= '\0')
990 /* If we end this ARGV-element by taking the rest as an arg,
991 we must advance to the next element now. */
994 else if (optind
== argc
)
998 /* 1003.2 specifies the format of this message. */
999 #if defined _LIBC && defined USE_IN_LIBIO
1002 if (__asprintf (&buf
,
1003 _("%s: option requires an argument -- %c\n"),
1006 _IO_flockfile (stderr
);
1008 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
1009 ((_IO_FILE
*) stderr
)->_flags2
|= _IO_FLAGS2_NOTCANCEL
;
1011 if (_IO_fwide (stderr
, 0) > 0)
1012 __fwprintf (stderr
, L
"%s", buf
);
1014 fputs (buf
, stderr
);
1016 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
1017 _IO_funlockfile (stderr
);
1022 fprintf (stderr
, _("%s: option requires an argument -- %c\n"),
1027 if (optstring
[0] == ':')
1034 /* We already incremented `optind' once;
1035 increment it again when taking next ARGV-elt as argument. */
1036 optarg
= argv
[optind
++];
1038 /* optarg is now the argument, see if it's in the
1039 table of longopts. */
1041 for (nextchar
= nameend
= optarg
; *nameend
&& *nameend
!= '='; nameend
++)
1044 /* Test all long options for either exact match
1045 or abbreviated matches. */
1046 for (p
= longopts
, option_index
= 0; p
->name
; p
++, option_index
++)
1047 if (!strncmp (p
->name
, nextchar
, nameend
- nextchar
))
1049 if ((unsigned int) (nameend
- nextchar
) == strlen (p
->name
))
1051 /* Exact match found. */
1053 indfound
= option_index
;
1057 else if (pfound
== NULL
)
1059 /* First nonexact match found. */
1061 indfound
= option_index
;
1064 /* Second or later nonexact match found. */
1067 if (ambig
&& !exact
)
1071 #if defined _LIBC && defined USE_IN_LIBIO
1074 if (__asprintf (&buf
, _("%s: option `-W %s' is ambiguous\n"),
1075 argv
[0], argv
[optind
]) >= 0)
1077 _IO_flockfile (stderr
);
1079 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
1080 ((_IO_FILE
*) stderr
)->_flags2
|= _IO_FLAGS2_NOTCANCEL
;
1082 if (_IO_fwide (stderr
, 0) > 0)
1083 __fwprintf (stderr
, L
"%s", buf
);
1085 fputs (buf
, stderr
);
1087 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
1088 _IO_funlockfile (stderr
);
1093 fprintf (stderr
, _("%s: option `-W %s' is ambiguous\n"),
1094 argv
[0], argv
[optind
]);
1097 nextchar
+= strlen (nextchar
);
1103 option_index
= indfound
;
1106 /* Don't test has_arg with >, because some C compilers don't
1107 allow it to be used on enums. */
1108 if (pfound
->has_arg
)
1109 optarg
= nameend
+ 1;
1114 #if defined _LIBC && defined USE_IN_LIBIO
1117 if (__asprintf (&buf
, _("\
1118 %s: option `-W %s' doesn't allow an argument\n"),
1119 argv
[0], pfound
->name
) >= 0)
1121 _IO_flockfile (stderr
);
1123 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
1124 ((_IO_FILE
*) stderr
)->_flags2
1125 |= _IO_FLAGS2_NOTCANCEL
;
1127 if (_IO_fwide (stderr
, 0) > 0)
1128 __fwprintf (stderr
, L
"%s", buf
);
1130 fputs (buf
, stderr
);
1132 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
1133 _IO_funlockfile (stderr
);
1138 fprintf (stderr
, _("\
1139 %s: option `-W %s' doesn't allow an argument\n"),
1140 argv
[0], pfound
->name
);
1144 nextchar
+= strlen (nextchar
);
1148 else if (pfound
->has_arg
== 1)
1151 optarg
= argv
[optind
++];
1156 #if defined _LIBC && defined USE_IN_LIBIO
1159 if (__asprintf (&buf
, _("\
1160 %s: option `%s' requires an argument\n"),
1161 argv
[0], argv
[optind
- 1]) >= 0)
1163 _IO_flockfile (stderr
);
1165 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
1166 ((_IO_FILE
*) stderr
)->_flags2
1167 |= _IO_FLAGS2_NOTCANCEL
;
1169 if (_IO_fwide (stderr
, 0) > 0)
1170 __fwprintf (stderr
, L
"%s", buf
);
1172 fputs (buf
, stderr
);
1174 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
1175 _IO_funlockfile (stderr
);
1181 _("%s: option `%s' requires an argument\n"),
1182 argv
[0], argv
[optind
- 1]);
1185 nextchar
+= strlen (nextchar
);
1186 return optstring
[0] == ':' ? ':' : '?';
1189 nextchar
+= strlen (nextchar
);
1190 if (longind
!= NULL
)
1191 *longind
= option_index
;
1194 *(pfound
->flag
) = pfound
->val
;
1200 return 'W'; /* Let the application handle it. */
1206 /* This is an option that accepts an argument optionally. */
1207 if (*nextchar
!= '\0')
1218 /* This is an option that requires an argument. */
1219 if (*nextchar
!= '\0')
1222 /* If we end this ARGV-element by taking the rest as an arg,
1223 we must advance to the next element now. */
1226 else if (optind
== argc
)
1230 /* 1003.2 specifies the format of this message. */
1231 #if defined _LIBC && defined USE_IN_LIBIO
1234 if (__asprintf (&buf
, _("\
1235 %s: option requires an argument -- %c\n"),
1238 _IO_flockfile (stderr
);
1240 int old_flags2
= ((_IO_FILE
*) stderr
)->_flags2
;
1241 ((_IO_FILE
*) stderr
)->_flags2
|= _IO_FLAGS2_NOTCANCEL
;
1243 if (_IO_fwide (stderr
, 0) > 0)
1244 __fwprintf (stderr
, L
"%s", buf
);
1246 fputs (buf
, stderr
);
1248 ((_IO_FILE
*) stderr
)->_flags2
= old_flags2
;
1249 _IO_funlockfile (stderr
);
1255 _("%s: option requires an argument -- %c\n"),
1260 if (optstring
[0] == ':')
1266 /* We already incremented `optind' once;
1267 increment it again when taking next ARGV-elt as argument. */
1268 optarg
= argv
[optind
++];
1277 getopt (argc
, argv
, optstring
)
1280 const char *optstring
;
1282 return _getopt_internal (argc
, argv
, optstring
,
1283 (const struct option
*) 0,
1288 #endif /* Not ELIDE_CODE. */
1292 /* Compile with -DTEST to make an executable for use in testing
1293 the above definition of `getopt'. */
1301 int digit_optind
= 0;
1305 int this_option_optind
= optind
? optind
: 1;
1307 c
= getopt (argc
, argv
, "abc:d:0123456789");
1323 if (digit_optind
!= 0 && digit_optind
!= this_option_optind
)
1324 printf ("digits occur in two different argv-elements.\n");
1325 digit_optind
= this_option_optind
;
1326 printf ("option %c\n", c
);
1330 printf ("option a\n");
1334 printf ("option b\n");
1338 printf ("option c with value `%s'\n", optarg
);
1345 printf ("?? getopt returned character code 0%o ??\n", c
);
1351 printf ("non-option ARGV-elements: ");
1352 while (optind
< argc
)
1353 printf ("%s ", argv
[optind
++]);