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) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001,2002,2003,2004
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>. */
36 /* Comment out all this code if we are using the GNU C Library, and are not
37 actually compiling the library itself. This code is part of the GNU C
38 Library, but also included in many other GNU distributions. Compiling
39 and linking in this code is a waste when using the GNU C library
40 (especially if it is a shared library). Rather than having every GNU
41 program understand `configure --with-gnu-libc' and omit the object files,
42 it is simpler to just do this in the source for each such file. */
44 #define GETOPT_INTERFACE_VERSION 2
45 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
46 # include <gnu-versions.h>
47 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
55 /* This needs to come after some library #include
56 to get __GNU_LIBRARY__ defined. */
57 #ifdef __GNU_LIBRARY__
58 /* Don't include stdlib.h for non-GNU C libraries because some of them
59 contain conflicting prototypes for getopt. */
62 #endif /* GNU C library. */
74 # define _(msgid) gettext (msgid)
77 #if defined _LIBC && defined USE_IN_LIBIO
81 #ifndef attribute_hidden
82 # define attribute_hidden
85 /* This version of `getopt' appears to the caller like standard Unix `getopt'
86 but it behaves differently for the user, since it allows the user
87 to intersperse the options with the other arguments.
89 As `getopt' works, it permutes the elements of ARGV so that,
90 when it is done, all the options precede everything else. Thus
91 all application programs are extended to handle flexible argument order.
93 Setting the environment variable POSIXLY_CORRECT disables permutation.
94 Then the behavior is completely standard.
96 GNU application programs can use a third alternative mode in which
97 they can distinguish the relative order of options and other arguments. */
100 #include "getopt_int.h"
102 /* For communication from `getopt' to the caller.
103 When `getopt' finds an option that takes an argument,
104 the argument value is returned here.
105 Also, when `ordering' is RETURN_IN_ORDER,
106 each non-option ARGV-element is returned here. */
110 /* Index in ARGV of the next element to be scanned.
111 This is used for communication to and from the caller
112 and for communication between successive calls to `getopt'.
114 On entry to `getopt', zero means this is the first call; initialize.
116 When `getopt' returns -1, this is the index of the first of the
117 non-option elements that the caller should itself scan.
119 Otherwise, `optind' communicates from one call to the next
120 how much of ARGV has been scanned so far. */
122 /* 1003.2 says this must be 1 before any call. */
125 /* Callers store zero here to inhibit the error message
126 for unrecognized options. */
130 /* Set to an option character which was unrecognized.
131 This must be initialized on some systems to avoid linking in the
132 system's own getopt implementation. */
136 /* Keep a global copy of all internal members of getopt_data. */
138 static struct _getopt_data getopt_data;
141 #ifndef __GNU_LIBRARY__
143 /* Avoid depending on library functions or files
144 whose names are inconsistent. */
147 extern char *getenv ();
150 #endif /* not __GNU_LIBRARY__ */
153 /* Stored original parameters.
154 XXX This is no good solution. We should rather copy the args so
155 that we can compare them later. But we must not use malloc(3). */
156 extern int __libc_argc;
157 extern char **__libc_argv;
159 /* Bash 2.0 gives us an environment variable containing flags
160 indicating ARGV elements that should not be considered arguments. */
162 # ifdef USE_NONOPTION_FLAGS
163 /* Defined in getopt_init.c */
164 extern char *__getopt_nonoption_flags;
167 # ifdef USE_NONOPTION_FLAGS
168 # define SWAP_FLAGS(ch1, ch2) \
169 if (d->__nonoption_flags_len > 0) \
171 char __tmp = __getopt_nonoption_flags[ch1]; \
172 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
173 __getopt_nonoption_flags[ch2] = __tmp; \
176 # define SWAP_FLAGS(ch1, ch2)
179 # define SWAP_FLAGS(ch1, ch2)
182 /* Exchange two adjacent subsequences of ARGV.
183 One subsequence is elements [first_nonopt,last_nonopt)
184 which contains all the non-options that have been skipped so far.
185 The other is elements [last_nonopt,optind), which contains all
186 the options processed since those non-options were skipped.
188 `first_nonopt' and `last_nonopt' are relocated so that they describe
189 the new indices of the non-options in ARGV after they are moved. */
192 exchange (char **argv, struct _getopt_data *d)
194 int bottom = d->__first_nonopt;
195 int middle = d->__last_nonopt;
199 /* Exchange the shorter segment with the far end of the longer segment.
200 That puts the shorter segment into the right place.
201 It leaves the longer segment in the right place overall,
202 but it consists of two parts that need to be swapped next. */
204 #if defined _LIBC && defined USE_NONOPTION_FLAGS
205 /* First make sure the handling of the `__getopt_nonoption_flags'
206 string can work normally. Our top argument must be in the range
208 if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len)
210 /* We must extend the array. The user plays games with us and
211 presents new arguments. */
212 char *new_str = malloc (top + 1);
214 d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;
217 memset (__mempcpy (new_str, __getopt_nonoption_flags,
218 d->__nonoption_flags_max_len),
219 '\0', top + 1 - d->__nonoption_flags_max_len);
220 d->__nonoption_flags_max_len = top + 1;
221 __getopt_nonoption_flags = new_str;
226 while (top > middle && middle > bottom)
228 if (top - middle > middle - bottom)
230 /* Bottom segment is the short one. */
231 int len = middle - bottom;
234 /* Swap it with the top part of the top segment. */
235 for (i = 0; i < len; i++)
237 tem = argv[bottom + i];
238 argv[bottom + i] = argv[top - (middle - bottom) + i];
239 argv[top - (middle - bottom) + i] = tem;
240 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
242 /* Exclude the moved bottom segment from further swapping. */
247 /* Top segment is the short one. */
248 int len = top - middle;
251 /* Swap it with the bottom part of the bottom segment. */
252 for (i = 0; i < len; i++)
254 tem = argv[bottom + i];
255 argv[bottom + i] = argv[middle + i];
256 argv[middle + i] = tem;
257 SWAP_FLAGS (bottom + i, middle + i);
259 /* Exclude the moved top segment from further swapping. */
264 /* Update records for the slots the non-options now occupy. */
266 d->__first_nonopt += (d->optind - d->__last_nonopt);
267 d->__last_nonopt = d->optind;
270 /* Initialize the internal data when the first call is made. */
273 _getopt_initialize (int argc, char *const *argv, const char *optstring,
274 struct _getopt_data *d)
276 /* Start processing options with ARGV-element 1 (since ARGV-element 0
277 is the program name); the sequence of previously skipped
278 non-option ARGV-elements is empty. */
280 d->__first_nonopt = d->__last_nonopt = d->optind;
282 d->__nextchar = NULL;
284 d->__posixly_correct = !!getenv ("POSIXLY_CORRECT");
286 /* Determine how to handle the ordering of options and nonoptions. */
288 if (optstring[0] == '-')
290 d->__ordering = RETURN_IN_ORDER;
293 else if (optstring[0] == '+')
295 d->__ordering = REQUIRE_ORDER;
298 else if (d->__posixly_correct)
299 d->__ordering = REQUIRE_ORDER;
301 d->__ordering = PERMUTE;
303 #if defined _LIBC && defined USE_NONOPTION_FLAGS
304 if (!d->__posixly_correct
305 && argc == __libc_argc && argv == __libc_argv)
307 if (d->__nonoption_flags_max_len == 0)
309 if (__getopt_nonoption_flags == NULL
310 || __getopt_nonoption_flags[0] == '\0')
311 d->__nonoption_flags_max_len = -1;
314 const char *orig_str = __getopt_nonoption_flags;
315 int len = d->__nonoption_flags_max_len = strlen (orig_str);
316 if (d->__nonoption_flags_max_len < argc)
317 d->__nonoption_flags_max_len = argc;
318 __getopt_nonoption_flags =
319 (char *) malloc (d->__nonoption_flags_max_len);
320 if (__getopt_nonoption_flags == NULL)
321 d->__nonoption_flags_max_len = -1;
323 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
324 '\0', d->__nonoption_flags_max_len - len);
327 d->__nonoption_flags_len = d->__nonoption_flags_max_len;
330 d->__nonoption_flags_len = 0;
336 /* Scan elements of ARGV (whose length is ARGC) for option characters
339 If an element of ARGV starts with '-', and is not exactly "-" or "--",
340 then it is an option element. The characters of this element
341 (aside from the initial '-') are option characters. If `getopt'
342 is called repeatedly, it returns successively each of the option characters
343 from each of the option elements.
345 If `getopt' finds another option character, it returns that character,
346 updating `optind' and `nextchar' so that the next call to `getopt' can
347 resume the scan with the following option character or ARGV-element.
349 If there are no more option characters, `getopt' returns -1.
350 Then `optind' is the index in ARGV of the first ARGV-element
351 that is not an option. (The ARGV-elements have been permuted
352 so that those that are not options now come last.)
354 OPTSTRING is a string containing the legitimate option characters.
355 If an option character is seen that is not listed in OPTSTRING,
356 return '?' after printing an error message. If you set `opterr' to
357 zero, the error message is suppressed but we still return '?'.
359 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
360 so the following text in the same ARGV-element, or the text of the following
361 ARGV-element, is returned in `optarg'. Two colons mean an option that
362 wants an optional arg; if there is text in the current ARGV-element,
363 it is returned in `optarg', otherwise `optarg' is set to zero.
365 If OPTSTRING starts with `-' or `+', it requests different methods of
366 handling the non-option ARGV-elements.
367 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
369 Long-named options begin with `--' instead of `-'.
370 Their names may be abbreviated as long as the abbreviation is unique
371 or is an exact match for some defined option. If they have an
372 argument, it follows the option name in the same ARGV-element, separated
373 from the option name by a `=', or else the in next ARGV-element.
374 When `getopt' finds a long-named option, it returns 0 if that option's
375 `flag' field is nonzero, the value of the option's `val' field
376 if the `flag' field is zero.
378 The elements of ARGV aren't really const, because we permute them.
379 But we pretend they're const in the prototype to be compatible
382 LONGOPTS is a vector of `struct option' terminated by an
383 element containing a name which is zero.
385 LONGIND returns the index in LONGOPT of the long-named option found.
386 It is only valid when a long-named option has been found by the most
389 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
390 long-named options. */
393 _getopt_internal_r (int argc, char *const *argv, const char *optstring,
394 const struct option *longopts, int *longind,
395 int long_only, struct _getopt_data *d)
397 int print_errors = d->opterr;
398 if (optstring[0] == ':')
406 if (d->optind == 0 || !d->__initialized)
409 d->optind = 1; /* Don't scan ARGV[0], the program name. */
410 optstring = _getopt_initialize (argc, argv, optstring, d);
411 d->__initialized = 1;
414 /* Test whether ARGV[optind] points to a non-option argument.
415 Either it does not have option syntax, or there is an environment flag
416 from the shell indicating it is not an option. The later information
417 is only used when the used in the GNU libc. */
418 #if defined _LIBC && defined USE_NONOPTION_FLAGS
419 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
420 || (d->optind < d->__nonoption_flags_len \
421 && __getopt_nonoption_flags[d->optind] == '1'))
423 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
426 if (d->__nextchar == NULL || *d->__nextchar == '\0')
428 /* Advance to the next ARGV-element. */
430 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
431 moved back by the user (who may also have changed the arguments). */
432 if (d->__last_nonopt > d->optind)
433 d->__last_nonopt = d->optind;
434 if (d->__first_nonopt > d->optind)
435 d->__first_nonopt = d->optind;
437 if (d->__ordering == PERMUTE)
439 /* If we have just processed some options following some non-options,
440 exchange them so that the options come first. */
442 if (d->__first_nonopt != d->__last_nonopt
443 && d->__last_nonopt != d->optind)
444 exchange ((char **) argv, d);
445 else if (d->__last_nonopt != d->optind)
446 d->__first_nonopt = d->optind;
448 /* Skip any additional non-options
449 and extend the range of non-options previously skipped. */
451 while (d->optind < argc && NONOPTION_P)
453 d->__last_nonopt = d->optind;
456 /* The special ARGV-element `--' means premature end of options.
457 Skip it like a null option,
458 then exchange with previous non-options as if it were an option,
459 then skip everything else like a non-option. */
461 if (d->optind != argc && !strcmp (argv[d->optind], "--"))
465 if (d->__first_nonopt != d->__last_nonopt
466 && d->__last_nonopt != d->optind)
467 exchange ((char **) argv, d);
468 else if (d->__first_nonopt == d->__last_nonopt)
469 d->__first_nonopt = d->optind;
470 d->__last_nonopt = argc;
475 /* If we have done all the ARGV-elements, stop the scan
476 and back over any non-options that we skipped and permuted. */
478 if (d->optind == argc)
480 /* Set the next-arg-index to point at the non-options
481 that we previously skipped, so the caller will digest them. */
482 if (d->__first_nonopt != d->__last_nonopt)
483 d->optind = d->__first_nonopt;
487 /* If we have come to a non-option and did not permute it,
488 either stop the scan or describe it to the caller and pass it by. */
492 if (d->__ordering == REQUIRE_ORDER)
494 d->optarg = argv[d->optind++];
498 /* We have found another option-ARGV-element.
499 Skip the initial punctuation. */
501 d->__nextchar = (argv[d->optind] + 1
502 + (longopts != NULL && argv[d->optind][1] == '-'));
505 /* Decode the current option-ARGV-element. */
507 /* Check whether the ARGV-element is a long option.
509 If long_only and the ARGV-element has the form "-f", where f is
510 a valid short option, don't consider it an abbreviated form of
511 a long option that starts with f. Otherwise there would be no
512 way to give the -f short option.
514 On the other hand, if there's a long option "fubar" and
515 the ARGV-element is "-fu", do consider that an abbreviation of
516 the long option, just like "--fu", and not "-f" with arg "u".
518 This distinction seems to be the most useful approach. */
521 && (argv[d->optind][1] == '-'
522 || (long_only && (argv[d->optind][2]
523 || !strchr (optstring, argv[d->optind][1])))))
526 const struct option *p;
527 const struct option *pfound = NULL;
533 for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
536 /* Test all long options for either exact match
537 or abbreviated matches. */
538 for (p = longopts, option_index = 0; p->name; p++, option_index++)
539 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
541 if ((unsigned int) (nameend - d->__nextchar)
542 == (unsigned int) strlen (p->name))
544 /* Exact match found. */
546 indfound = option_index;
550 else if (pfound == NULL)
552 /* First nonexact match found. */
554 indfound = option_index;
557 || pfound->has_arg != p->has_arg
558 || pfound->flag != p->flag
559 || pfound->val != p->val)
560 /* Second or later nonexact match found. */
568 #if defined _LIBC && defined USE_IN_LIBIO
571 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
572 argv[0], argv[d->optind]) >= 0)
574 _IO_flockfile (stderr);
576 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
577 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
579 if (_IO_fwide (stderr, 0) > 0)
580 __fwprintf (stderr, L"%s", buf);
584 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
585 _IO_funlockfile (stderr);
590 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
591 argv[0], argv[d->optind]);
594 d->__nextchar += strlen (d->__nextchar);
602 option_index = indfound;
606 /* Don't test has_arg with >, because some C compilers don't
607 allow it to be used on enums. */
609 d->optarg = nameend + 1;
614 #if defined _LIBC && defined USE_IN_LIBIO
619 if (argv[d->optind - 1][1] == '-')
622 #if defined _LIBC && defined USE_IN_LIBIO
623 n = __asprintf (&buf, _("\
624 %s: option `--%s' doesn't allow an argument\n"),
625 argv[0], pfound->name);
627 fprintf (stderr, _("\
628 %s: option `--%s' doesn't allow an argument\n"),
629 argv[0], pfound->name);
634 /* +option or -option */
635 #if defined _LIBC && defined USE_IN_LIBIO
636 n = __asprintf (&buf, _("\
637 %s: option `%c%s' doesn't allow an argument\n"),
638 argv[0], argv[d->optind - 1][0],
641 fprintf (stderr, _("\
642 %s: option `%c%s' doesn't allow an argument\n"),
643 argv[0], argv[d->optind - 1][0],
648 #if defined _LIBC && defined USE_IN_LIBIO
651 _IO_flockfile (stderr);
653 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
654 ((_IO_FILE *) stderr)->_flags2
655 |= _IO_FLAGS2_NOTCANCEL;
657 if (_IO_fwide (stderr, 0) > 0)
658 __fwprintf (stderr, L"%s", buf);
662 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
663 _IO_funlockfile (stderr);
670 d->__nextchar += strlen (d->__nextchar);
672 d->optopt = pfound->val;
676 else if (pfound->has_arg == 1)
678 if (d->optind < argc)
679 d->optarg = argv[d->optind++];
684 #if defined _LIBC && defined USE_IN_LIBIO
687 if (__asprintf (&buf, _("\
688 %s: option `%s' requires an argument\n"),
689 argv[0], argv[d->optind - 1]) >= 0)
691 _IO_flockfile (stderr);
693 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
694 ((_IO_FILE *) stderr)->_flags2
695 |= _IO_FLAGS2_NOTCANCEL;
697 if (_IO_fwide (stderr, 0) > 0)
698 __fwprintf (stderr, L"%s", buf);
702 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
703 _IO_funlockfile (stderr);
709 _("%s: option `%s' requires an argument\n"),
710 argv[0], argv[d->optind - 1]);
713 d->__nextchar += strlen (d->__nextchar);
714 d->optopt = pfound->val;
715 return optstring[0] == ':' ? ':' : '?';
718 d->__nextchar += strlen (d->__nextchar);
720 *longind = option_index;
723 *(pfound->flag) = pfound->val;
729 /* Can't find it as a long option. If this is not getopt_long_only,
730 or the option starts with '--' or is not a valid short
731 option, then it's an error.
732 Otherwise interpret it as a short option. */
733 if (!long_only || argv[d->optind][1] == '-'
734 || strchr (optstring, *d->__nextchar) == NULL)
738 #if defined _LIBC && defined USE_IN_LIBIO
743 if (argv[d->optind][1] == '-')
746 #if defined _LIBC && defined USE_IN_LIBIO
747 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
748 argv[0], d->__nextchar);
750 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
751 argv[0], d->__nextchar);
756 /* +option or -option */
757 #if defined _LIBC && defined USE_IN_LIBIO
758 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
759 argv[0], argv[d->optind][0], d->__nextchar);
761 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
762 argv[0], argv[d->optind][0], d->__nextchar);
766 #if defined _LIBC && defined USE_IN_LIBIO
769 _IO_flockfile (stderr);
771 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
772 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
774 if (_IO_fwide (stderr, 0) > 0)
775 __fwprintf (stderr, L"%s", buf);
779 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
780 _IO_funlockfile (stderr);
786 d->__nextchar = (char *) "";
793 /* Look at and handle the next short option-character. */
796 char c = *d->__nextchar++;
797 char *temp = strchr (optstring, c);
799 /* Increment `optind' when we start to process its last character. */
800 if (*d->__nextchar == '\0')
803 if (temp == NULL || c == ':')
807 #if defined _LIBC && defined USE_IN_LIBIO
812 if (d->__posixly_correct)
814 /* 1003.2 specifies the format of this message. */
815 #if defined _LIBC && defined USE_IN_LIBIO
816 n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
819 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
824 #if defined _LIBC && defined USE_IN_LIBIO
825 n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
828 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
832 #if defined _LIBC && defined USE_IN_LIBIO
835 _IO_flockfile (stderr);
837 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
838 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
840 if (_IO_fwide (stderr, 0) > 0)
841 __fwprintf (stderr, L"%s", buf);
845 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
846 _IO_funlockfile (stderr);
855 /* Convenience. Treat POSIX -W foo same as long option --foo */
856 if (temp[0] == 'W' && temp[1] == ';')
859 const struct option *p;
860 const struct option *pfound = NULL;
866 /* This is an option that requires an argument. */
867 if (*d->__nextchar != '\0')
869 d->optarg = d->__nextchar;
870 /* If we end this ARGV-element by taking the rest as an arg,
871 we must advance to the next element now. */
874 else if (d->optind == argc)
878 /* 1003.2 specifies the format of this message. */
879 #if defined _LIBC && defined USE_IN_LIBIO
882 if (__asprintf (&buf,
883 _("%s: option requires an argument -- %c\n"),
886 _IO_flockfile (stderr);
888 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
889 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
891 if (_IO_fwide (stderr, 0) > 0)
892 __fwprintf (stderr, L"%s", buf);
896 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
897 _IO_funlockfile (stderr);
902 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
907 if (optstring[0] == ':')
914 /* We already incremented `d->optind' once;
915 increment it again when taking next ARGV-elt as argument. */
916 d->optarg = argv[d->optind++];
918 /* optarg is now the argument, see if it's in the
919 table of longopts. */
921 for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
925 /* Test all long options for either exact match
926 or abbreviated matches. */
927 for (p = longopts, option_index = 0; p->name; p++, option_index++)
928 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
930 if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name))
932 /* Exact match found. */
934 indfound = option_index;
938 else if (pfound == NULL)
940 /* First nonexact match found. */
942 indfound = option_index;
945 /* Second or later nonexact match found. */
952 #if defined _LIBC && defined USE_IN_LIBIO
955 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
956 argv[0], argv[d->optind]) >= 0)
958 _IO_flockfile (stderr);
960 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
961 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
963 if (_IO_fwide (stderr, 0) > 0)
964 __fwprintf (stderr, L"%s", buf);
968 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
969 _IO_funlockfile (stderr);
974 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
975 argv[0], argv[d->optind]);
978 d->__nextchar += strlen (d->__nextchar);
984 option_index = indfound;
987 /* Don't test has_arg with >, because some C compilers don't
988 allow it to be used on enums. */
990 d->optarg = nameend + 1;
995 #if defined _LIBC && defined USE_IN_LIBIO
998 if (__asprintf (&buf, _("\
999 %s: option `-W %s' doesn't allow an argument\n"),
1000 argv[0], pfound->name) >= 0)
1002 _IO_flockfile (stderr);
1004 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1005 ((_IO_FILE *) stderr)->_flags2
1006 |= _IO_FLAGS2_NOTCANCEL;
1008 if (_IO_fwide (stderr, 0) > 0)
1009 __fwprintf (stderr, L"%s", buf);
1011 fputs (buf, stderr);
1013 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1014 _IO_funlockfile (stderr);
1019 fprintf (stderr, _("\
1020 %s: option `-W %s' doesn't allow an argument\n"),
1021 argv[0], pfound->name);
1025 d->__nextchar += strlen (d->__nextchar);
1029 else if (pfound->has_arg == 1)
1031 if (d->optind < argc)
1032 d->optarg = argv[d->optind++];
1037 #if defined _LIBC && defined USE_IN_LIBIO
1040 if (__asprintf (&buf, _("\
1041 %s: option `%s' requires an argument\n"),
1042 argv[0], argv[d->optind - 1]) >= 0)
1044 _IO_flockfile (stderr);
1046 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1047 ((_IO_FILE *) stderr)->_flags2
1048 |= _IO_FLAGS2_NOTCANCEL;
1050 if (_IO_fwide (stderr, 0) > 0)
1051 __fwprintf (stderr, L"%s", buf);
1053 fputs (buf, stderr);
1055 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1056 _IO_funlockfile (stderr);
1062 _("%s: option `%s' requires an argument\n"),
1063 argv[0], argv[d->optind - 1]);
1066 d->__nextchar += strlen (d->__nextchar);
1067 return optstring[0] == ':' ? ':' : '?';
1070 d->__nextchar += strlen (d->__nextchar);
1071 if (longind != NULL)
1072 *longind = option_index;
1075 *(pfound->flag) = pfound->val;
1080 d->__nextchar = NULL;
1081 return 'W'; /* Let the application handle it. */
1087 /* This is an option that accepts an argument optionally. */
1088 if (*d->__nextchar != '\0')
1090 d->optarg = d->__nextchar;
1095 d->__nextchar = NULL;
1099 /* This is an option that requires an argument. */
1100 if (*d->__nextchar != '\0')
1102 d->optarg = d->__nextchar;
1103 /* If we end this ARGV-element by taking the rest as an arg,
1104 we must advance to the next element now. */
1107 else if (d->optind == argc)
1111 /* 1003.2 specifies the format of this message. */
1112 #if defined _LIBC && defined USE_IN_LIBIO
1115 if (__asprintf (&buf, _("\
1116 %s: option requires an argument -- %c\n"),
1119 _IO_flockfile (stderr);
1121 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1122 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1124 if (_IO_fwide (stderr, 0) > 0)
1125 __fwprintf (stderr, L"%s", buf);
1127 fputs (buf, stderr);
1129 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1130 _IO_funlockfile (stderr);
1136 _("%s: option requires an argument -- %c\n"),
1141 if (optstring[0] == ':')
1147 /* We already incremented `optind' once;
1148 increment it again when taking next ARGV-elt as argument. */
1149 d->optarg = argv[d->optind++];
1150 d->__nextchar = NULL;
1158 _getopt_internal (int argc, char *const *argv, const char *optstring,
1159 const struct option *longopts, int *longind, int long_only)
1163 getopt_data.optind = optind;
1164 getopt_data.opterr = opterr;
1166 result = _getopt_internal_r (argc, argv, optstring, longopts,
1167 longind, long_only, &getopt_data);
1169 optind = getopt_data.optind;
1170 optarg = getopt_data.optarg;
1171 optopt = getopt_data.optopt;
1177 getopt (int argc, char *const *argv, const char *optstring)
1179 return _getopt_internal (argc, argv, optstring,
1180 (const struct option *) 0,
1185 #endif /* Not ELIDE_CODE. */
1189 /* Compile with -DTEST to make an executable for use in testing
1190 the above definition of `getopt'. */
1193 main (int argc, char **argv)
1196 int digit_optind = 0;
1200 int this_option_optind = optind ? optind : 1;
1202 c = getopt (argc, argv, "abc:d:0123456789");
1218 if (digit_optind != 0 && digit_optind != this_option_optind)
1219 printf ("digits occur in two different argv-elements.\n");
1220 digit_optind = this_option_optind;
1221 printf ("option %c\n", c);
1225 printf ("option a\n");
1229 printf ("option b\n");
1233 printf ("option c with value `%s'\n", optarg);
1240 printf ("?? getopt returned character code 0%o ??\n", c);
1246 printf ("non-option ARGV-elements: ");
1247 while (optind < argc)
1248 printf ("%s ", argv[optind++]);