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 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>. */
35 /* Comment out all this code if we are using the GNU C Library, and are not
36 actually compiling the library itself. This code is part of the GNU C
37 Library, but also included in many other GNU distributions. Compiling
38 and linking in this code is a waste when using the GNU C library
39 (especially if it is a shared library). Rather than having every GNU
40 program understand `configure --with-gnu-libc' and omit the object files,
41 it is simpler to just do this in the source for each such file. */
43 #define GETOPT_INTERFACE_VERSION 2
44 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
45 # include <gnu-versions.h>
46 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
54 /* This needs to come after some library #include
55 to get __GNU_LIBRARY__ defined. */
56 #ifdef __GNU_LIBRARY__
57 /* Don't include stdlib.h for non-GNU C libraries because some of them
58 contain conflicting prototypes for getopt. */
61 #endif /* GNU C library. */
73 # define _(msgid) gettext (msgid)
76 #if defined _LIBC && defined USE_IN_LIBIO
80 #ifndef attribute_hidden
81 # define attribute_hidden
84 /* This version of `getopt' appears to the caller like standard Unix `getopt'
85 but it behaves differently for the user, since it allows the user
86 to intersperse the options with the other arguments.
88 As `getopt' works, it permutes the elements of ARGV so that,
89 when it is done, all the options precede everything else. Thus
90 all application programs are extended to handle flexible argument order.
92 Setting the environment variable POSIXLY_CORRECT disables permutation.
93 Then the behavior is completely standard.
95 GNU application programs can use a third alternative mode in which
96 they can distinguish the relative order of options and other arguments. */
99 #include "getopt_int.h"
101 /* For communication from `getopt' to the caller.
102 When `getopt' finds an option that takes an argument,
103 the argument value is returned here.
104 Also, when `ordering' is RETURN_IN_ORDER,
105 each non-option ARGV-element is returned here. */
109 /* Index in ARGV of the next element to be scanned.
110 This is used for communication to and from the caller
111 and for communication between successive calls to `getopt'.
113 On entry to `getopt', zero means this is the first call; initialize.
115 When `getopt' returns -1, this is the index of the first of the
116 non-option elements that the caller should itself scan.
118 Otherwise, `optind' communicates from one call to the next
119 how much of ARGV has been scanned so far. */
121 /* 1003.2 says this must be 1 before any call. */
124 /* Callers store zero here to inhibit the error message
125 for unrecognized options. */
129 /* Set to an option character which was unrecognized.
130 This must be initialized on some systems to avoid linking in the
131 system's own getopt implementation. */
135 /* Keep a global copy of all internal members of getopt_data. */
137 static struct _getopt_data getopt_data;
140 #ifndef __GNU_LIBRARY__
142 /* Avoid depending on library functions or files
143 whose names are inconsistent. */
146 extern char *getenv ();
149 #endif /* not __GNU_LIBRARY__ */
152 /* Stored original parameters.
153 XXX This is no good solution. We should rather copy the args so
154 that we can compare them later. But we must not use malloc(3). */
155 extern int __libc_argc;
156 extern char **__libc_argv;
158 /* Bash 2.0 gives us an environment variable containing flags
159 indicating ARGV elements that should not be considered arguments. */
161 # ifdef USE_NONOPTION_FLAGS
162 /* Defined in getopt_init.c */
163 extern char *__getopt_nonoption_flags;
166 # ifdef USE_NONOPTION_FLAGS
167 # define SWAP_FLAGS(ch1, ch2) \
168 if (d->__nonoption_flags_len > 0) \
170 char __tmp = __getopt_nonoption_flags[ch1]; \
171 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
172 __getopt_nonoption_flags[ch2] = __tmp; \
175 # define SWAP_FLAGS(ch1, ch2)
178 # define SWAP_FLAGS(ch1, ch2)
181 /* Exchange two adjacent subsequences of ARGV.
182 One subsequence is elements [first_nonopt,last_nonopt)
183 which contains all the non-options that have been skipped so far.
184 The other is elements [last_nonopt,optind), which contains all
185 the options processed since those non-options were skipped.
187 `first_nonopt' and `last_nonopt' are relocated so that they describe
188 the new indices of the non-options in ARGV after they are moved. */
191 exchange (char **argv, struct _getopt_data *d)
193 int bottom = d->__first_nonopt;
194 int middle = d->__last_nonopt;
198 /* Exchange the shorter segment with the far end of the longer segment.
199 That puts the shorter segment into the right place.
200 It leaves the longer segment in the right place overall,
201 but it consists of two parts that need to be swapped next. */
203 #if defined _LIBC && defined USE_NONOPTION_FLAGS
204 /* First make sure the handling of the `__getopt_nonoption_flags'
205 string can work normally. Our top argument must be in the range
207 if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len)
209 /* We must extend the array. The user plays games with us and
210 presents new arguments. */
211 char *new_str = malloc (top + 1);
213 d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;
216 memset (__mempcpy (new_str, __getopt_nonoption_flags,
217 d->__nonoption_flags_max_len),
218 '\0', top + 1 - d->__nonoption_flags_max_len);
219 d->__nonoption_flags_max_len = top + 1;
220 __getopt_nonoption_flags = new_str;
225 while (top > middle && middle > bottom)
227 if (top - middle > middle - bottom)
229 /* Bottom segment is the short one. */
230 int len = middle - bottom;
233 /* Swap it with the top part of the top segment. */
234 for (i = 0; i < len; i++)
236 tem = argv[bottom + i];
237 argv[bottom + i] = argv[top - (middle - bottom) + i];
238 argv[top - (middle - bottom) + i] = tem;
239 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
241 /* Exclude the moved bottom segment from further swapping. */
246 /* Top segment is the short one. */
247 int len = top - middle;
250 /* Swap it with the bottom part of the bottom segment. */
251 for (i = 0; i < len; i++)
253 tem = argv[bottom + i];
254 argv[bottom + i] = argv[middle + i];
255 argv[middle + i] = tem;
256 SWAP_FLAGS (bottom + i, middle + i);
258 /* Exclude the moved top segment from further swapping. */
263 /* Update records for the slots the non-options now occupy. */
265 d->__first_nonopt += (d->optind - d->__last_nonopt);
266 d->__last_nonopt = d->optind;
269 /* Initialize the internal data when the first call is made. */
272 _getopt_initialize (int argc, char *const *argv, const char *optstring,
273 struct _getopt_data *d)
275 /* Start processing options with ARGV-element 1 (since ARGV-element 0
276 is the program name); the sequence of previously skipped
277 non-option ARGV-elements is empty. */
279 d->__first_nonopt = d->__last_nonopt = d->optind;
281 d->__nextchar = NULL;
283 d->__posixly_correct = !!getenv ("POSIXLY_CORRECT");
285 /* Determine how to handle the ordering of options and nonoptions. */
287 if (optstring[0] == '-')
289 d->__ordering = RETURN_IN_ORDER;
292 else if (optstring[0] == '+')
294 d->__ordering = REQUIRE_ORDER;
297 else if (d->__posixly_correct)
298 d->__ordering = REQUIRE_ORDER;
300 d->__ordering = PERMUTE;
302 #if defined _LIBC && defined USE_NONOPTION_FLAGS
303 if (!d->__posixly_correct
304 && argc == __libc_argc && argv == __libc_argv)
306 if (d->__nonoption_flags_max_len == 0)
308 if (__getopt_nonoption_flags == NULL
309 || __getopt_nonoption_flags[0] == '\0')
310 d->__nonoption_flags_max_len = -1;
313 const char *orig_str = __getopt_nonoption_flags;
314 int len = d->__nonoption_flags_max_len = strlen (orig_str);
315 if (d->__nonoption_flags_max_len < argc)
316 d->__nonoption_flags_max_len = argc;
317 __getopt_nonoption_flags =
318 (char *) malloc (d->__nonoption_flags_max_len);
319 if (__getopt_nonoption_flags == NULL)
320 d->__nonoption_flags_max_len = -1;
322 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
323 '\0', d->__nonoption_flags_max_len - len);
326 d->__nonoption_flags_len = d->__nonoption_flags_max_len;
329 d->__nonoption_flags_len = 0;
335 /* Scan elements of ARGV (whose length is ARGC) for option characters
338 If an element of ARGV starts with '-', and is not exactly "-" or "--",
339 then it is an option element. The characters of this element
340 (aside from the initial '-') are option characters. If `getopt'
341 is called repeatedly, it returns successively each of the option characters
342 from each of the option elements.
344 If `getopt' finds another option character, it returns that character,
345 updating `optind' and `nextchar' so that the next call to `getopt' can
346 resume the scan with the following option character or ARGV-element.
348 If there are no more option characters, `getopt' returns -1.
349 Then `optind' is the index in ARGV of the first ARGV-element
350 that is not an option. (The ARGV-elements have been permuted
351 so that those that are not options now come last.)
353 OPTSTRING is a string containing the legitimate option characters.
354 If an option character is seen that is not listed in OPTSTRING,
355 return '?' after printing an error message. If you set `opterr' to
356 zero, the error message is suppressed but we still return '?'.
358 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
359 so the following text in the same ARGV-element, or the text of the following
360 ARGV-element, is returned in `optarg'. Two colons mean an option that
361 wants an optional arg; if there is text in the current ARGV-element,
362 it is returned in `optarg', otherwise `optarg' is set to zero.
364 If OPTSTRING starts with `-' or `+', it requests different methods of
365 handling the non-option ARGV-elements.
366 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
368 Long-named options begin with `--' instead of `-'.
369 Their names may be abbreviated as long as the abbreviation is unique
370 or is an exact match for some defined option. If they have an
371 argument, it follows the option name in the same ARGV-element, separated
372 from the option name by a `=', or else the in next ARGV-element.
373 When `getopt' finds a long-named option, it returns 0 if that option's
374 `flag' field is nonzero, the value of the option's `val' field
375 if the `flag' field is zero.
377 The elements of ARGV aren't really const, because we permute them.
378 But we pretend they're const in the prototype to be compatible
381 LONGOPTS is a vector of `struct option' terminated by an
382 element containing a name which is zero.
384 LONGIND returns the index in LONGOPT of the long-named option found.
385 It is only valid when a long-named option has been found by the most
388 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
389 long-named options. */
392 _getopt_internal_r (int argc, char *const *argv, const char *optstring,
393 const struct option *longopts, int *longind,
394 int long_only, struct _getopt_data *d)
396 int print_errors = d->opterr;
397 if (optstring[0] == ':')
405 if (d->optind == 0 || !d->__initialized)
408 d->optind = 1; /* Don't scan ARGV[0], the program name. */
409 optstring = _getopt_initialize (argc, argv, optstring, d);
410 d->__initialized = 1;
413 /* Test whether ARGV[optind] points to a non-option argument.
414 Either it does not have option syntax, or there is an environment flag
415 from the shell indicating it is not an option. The later information
416 is only used when the used in the GNU libc. */
417 #if defined _LIBC && defined USE_NONOPTION_FLAGS
418 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
419 || (d->optind < d->__nonoption_flags_len \
420 && __getopt_nonoption_flags[d->optind] == '1'))
422 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
425 if (d->__nextchar == NULL || *d->__nextchar == '\0')
427 /* Advance to the next ARGV-element. */
429 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
430 moved back by the user (who may also have changed the arguments). */
431 if (d->__last_nonopt > d->optind)
432 d->__last_nonopt = d->optind;
433 if (d->__first_nonopt > d->optind)
434 d->__first_nonopt = d->optind;
436 if (d->__ordering == PERMUTE)
438 /* If we have just processed some options following some non-options,
439 exchange them so that the options come first. */
441 if (d->__first_nonopt != d->__last_nonopt
442 && d->__last_nonopt != d->optind)
443 exchange ((char **) argv, d);
444 else if (d->__last_nonopt != d->optind)
445 d->__first_nonopt = d->optind;
447 /* Skip any additional non-options
448 and extend the range of non-options previously skipped. */
450 while (d->optind < argc && NONOPTION_P)
452 d->__last_nonopt = d->optind;
455 /* The special ARGV-element `--' means premature end of options.
456 Skip it like a null option,
457 then exchange with previous non-options as if it were an option,
458 then skip everything else like a non-option. */
460 if (d->optind != argc && !strcmp (argv[d->optind], "--"))
464 if (d->__first_nonopt != d->__last_nonopt
465 && d->__last_nonopt != d->optind)
466 exchange ((char **) argv, d);
467 else if (d->__first_nonopt == d->__last_nonopt)
468 d->__first_nonopt = d->optind;
469 d->__last_nonopt = argc;
474 /* If we have done all the ARGV-elements, stop the scan
475 and back over any non-options that we skipped and permuted. */
477 if (d->optind == argc)
479 /* Set the next-arg-index to point at the non-options
480 that we previously skipped, so the caller will digest them. */
481 if (d->__first_nonopt != d->__last_nonopt)
482 d->optind = d->__first_nonopt;
486 /* If we have come to a non-option and did not permute it,
487 either stop the scan or describe it to the caller and pass it by. */
491 if (d->__ordering == REQUIRE_ORDER)
493 d->optarg = argv[d->optind++];
497 /* We have found another option-ARGV-element.
498 Skip the initial punctuation. */
500 d->__nextchar = (argv[d->optind] + 1
501 + (longopts != NULL && argv[d->optind][1] == '-'));
504 /* Decode the current option-ARGV-element. */
506 /* Check whether the ARGV-element is a long option.
508 If long_only and the ARGV-element has the form "-f", where f is
509 a valid short option, don't consider it an abbreviated form of
510 a long option that starts with f. Otherwise there would be no
511 way to give the -f short option.
513 On the other hand, if there's a long option "fubar" and
514 the ARGV-element is "-fu", do consider that an abbreviation of
515 the long option, just like "--fu", and not "-f" with arg "u".
517 This distinction seems to be the most useful approach. */
520 && (argv[d->optind][1] == '-'
521 || (long_only && (argv[d->optind][2]
522 || !strchr (optstring, argv[d->optind][1])))))
525 const struct option *p;
526 const struct option *pfound = NULL;
532 for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
535 /* Test all long options for either exact match
536 or abbreviated matches. */
537 for (p = longopts, option_index = 0; p->name; p++, option_index++)
538 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
540 if ((unsigned int) (nameend - d->__nextchar)
541 == (unsigned int) strlen (p->name))
543 /* Exact match found. */
545 indfound = option_index;
549 else if (pfound == NULL)
551 /* First nonexact match found. */
553 indfound = option_index;
556 || pfound->has_arg != p->has_arg
557 || pfound->flag != p->flag
558 || pfound->val != p->val)
559 /* Second or later nonexact match found. */
567 #if defined _LIBC && defined USE_IN_LIBIO
570 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
571 argv[0], argv[d->optind]) >= 0)
573 _IO_flockfile (stderr);
575 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
576 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
578 if (_IO_fwide (stderr, 0) > 0)
579 __fwprintf (stderr, L"%s", buf);
583 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
584 _IO_funlockfile (stderr);
589 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
590 argv[0], argv[d->optind]);
593 d->__nextchar += strlen (d->__nextchar);
601 option_index = indfound;
605 /* Don't test has_arg with >, because some C compilers don't
606 allow it to be used on enums. */
608 d->optarg = nameend + 1;
613 #if defined _LIBC && defined USE_IN_LIBIO
618 if (argv[d->optind - 1][1] == '-')
621 #if defined _LIBC && defined USE_IN_LIBIO
622 n = __asprintf (&buf, _("\
623 %s: option `--%s' doesn't allow an argument\n"),
624 argv[0], pfound->name);
626 fprintf (stderr, _("\
627 %s: option `--%s' doesn't allow an argument\n"),
628 argv[0], pfound->name);
633 /* +option or -option */
634 #if defined _LIBC && defined USE_IN_LIBIO
635 n = __asprintf (&buf, _("\
636 %s: option `%c%s' doesn't allow an argument\n"),
637 argv[0], argv[d->optind - 1][0],
640 fprintf (stderr, _("\
641 %s: option `%c%s' doesn't allow an argument\n"),
642 argv[0], argv[d->optind - 1][0],
647 #if defined _LIBC && defined USE_IN_LIBIO
650 _IO_flockfile (stderr);
652 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
653 ((_IO_FILE *) stderr)->_flags2
654 |= _IO_FLAGS2_NOTCANCEL;
656 if (_IO_fwide (stderr, 0) > 0)
657 __fwprintf (stderr, L"%s", buf);
661 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
662 _IO_funlockfile (stderr);
669 d->__nextchar += strlen (d->__nextchar);
671 d->optopt = pfound->val;
675 else if (pfound->has_arg == 1)
677 if (d->optind < argc)
678 d->optarg = argv[d->optind++];
683 #if defined _LIBC && defined USE_IN_LIBIO
686 if (__asprintf (&buf, _("\
687 %s: option `%s' requires an argument\n"),
688 argv[0], argv[d->optind - 1]) >= 0)
690 _IO_flockfile (stderr);
692 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
693 ((_IO_FILE *) stderr)->_flags2
694 |= _IO_FLAGS2_NOTCANCEL;
696 if (_IO_fwide (stderr, 0) > 0)
697 __fwprintf (stderr, L"%s", buf);
701 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
702 _IO_funlockfile (stderr);
708 _("%s: option `%s' requires an argument\n"),
709 argv[0], argv[d->optind - 1]);
712 d->__nextchar += strlen (d->__nextchar);
713 d->optopt = pfound->val;
714 return optstring[0] == ':' ? ':' : '?';
717 d->__nextchar += strlen (d->__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[d->optind][1] == '-'
733 || strchr (optstring, *d->__nextchar) == NULL)
737 #if defined _LIBC && defined USE_IN_LIBIO
742 if (argv[d->optind][1] == '-')
745 #if defined _LIBC && defined USE_IN_LIBIO
746 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
747 argv[0], d->__nextchar);
749 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
750 argv[0], d->__nextchar);
755 /* +option or -option */
756 #if defined _LIBC && defined USE_IN_LIBIO
757 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
758 argv[0], argv[d->optind][0], d->__nextchar);
760 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
761 argv[0], argv[d->optind][0], d->__nextchar);
765 #if defined _LIBC && defined USE_IN_LIBIO
768 _IO_flockfile (stderr);
770 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
771 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
773 if (_IO_fwide (stderr, 0) > 0)
774 __fwprintf (stderr, L"%s", buf);
778 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
779 _IO_funlockfile (stderr);
785 d->__nextchar = (char *) "";
792 /* Look at and handle the next short option-character. */
795 char c = *d->__nextchar++;
796 char *temp = strchr (optstring, c);
798 /* Increment `optind' when we start to process its last character. */
799 if (*d->__nextchar == '\0')
802 if (temp == NULL || c == ':')
806 #if defined _LIBC && defined USE_IN_LIBIO
811 if (d->__posixly_correct)
813 /* 1003.2 specifies the format of this message. */
814 #if defined _LIBC && defined USE_IN_LIBIO
815 n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
818 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
823 #if defined _LIBC && defined USE_IN_LIBIO
824 n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
827 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
831 #if defined _LIBC && defined USE_IN_LIBIO
834 _IO_flockfile (stderr);
836 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
837 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
839 if (_IO_fwide (stderr, 0) > 0)
840 __fwprintf (stderr, L"%s", buf);
844 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
845 _IO_funlockfile (stderr);
854 /* Convenience. Treat POSIX -W foo same as long option --foo */
855 if (temp[0] == 'W' && temp[1] == ';')
858 const struct option *p;
859 const struct option *pfound = NULL;
865 /* This is an option that requires an argument. */
866 if (*d->__nextchar != '\0')
868 d->optarg = d->__nextchar;
869 /* If we end this ARGV-element by taking the rest as an arg,
870 we must advance to the next element now. */
873 else if (d->optind == argc)
877 /* 1003.2 specifies the format of this message. */
878 #if defined _LIBC && defined USE_IN_LIBIO
881 if (__asprintf (&buf,
882 _("%s: option requires an argument -- %c\n"),
885 _IO_flockfile (stderr);
887 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
888 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
890 if (_IO_fwide (stderr, 0) > 0)
891 __fwprintf (stderr, L"%s", buf);
895 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
896 _IO_funlockfile (stderr);
901 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
906 if (optstring[0] == ':')
913 /* We already incremented `d->optind' once;
914 increment it again when taking next ARGV-elt as argument. */
915 d->optarg = argv[d->optind++];
917 /* optarg is now the argument, see if it's in the
918 table of longopts. */
920 for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
924 /* Test all long options for either exact match
925 or abbreviated matches. */
926 for (p = longopts, option_index = 0; p->name; p++, option_index++)
927 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
929 if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name))
931 /* Exact match found. */
933 indfound = option_index;
937 else if (pfound == NULL)
939 /* First nonexact match found. */
941 indfound = option_index;
944 /* Second or later nonexact match found. */
951 #if defined _LIBC && defined USE_IN_LIBIO
954 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
955 argv[0], argv[d->optind]) >= 0)
957 _IO_flockfile (stderr);
959 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
960 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
962 if (_IO_fwide (stderr, 0) > 0)
963 __fwprintf (stderr, L"%s", buf);
967 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
968 _IO_funlockfile (stderr);
973 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
974 argv[0], argv[d->optind]);
977 d->__nextchar += strlen (d->__nextchar);
983 option_index = indfound;
986 /* Don't test has_arg with >, because some C compilers don't
987 allow it to be used on enums. */
989 d->optarg = nameend + 1;
994 #if defined _LIBC && defined USE_IN_LIBIO
997 if (__asprintf (&buf, _("\
998 %s: option `-W %s' doesn't allow an argument\n"),
999 argv[0], pfound->name) >= 0)
1001 _IO_flockfile (stderr);
1003 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1004 ((_IO_FILE *) stderr)->_flags2
1005 |= _IO_FLAGS2_NOTCANCEL;
1007 if (_IO_fwide (stderr, 0) > 0)
1008 __fwprintf (stderr, L"%s", buf);
1010 fputs (buf, stderr);
1012 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1013 _IO_funlockfile (stderr);
1018 fprintf (stderr, _("\
1019 %s: option `-W %s' doesn't allow an argument\n"),
1020 argv[0], pfound->name);
1024 d->__nextchar += strlen (d->__nextchar);
1028 else if (pfound->has_arg == 1)
1030 if (d->optind < argc)
1031 d->optarg = argv[d->optind++];
1036 #if defined _LIBC && defined USE_IN_LIBIO
1039 if (__asprintf (&buf, _("\
1040 %s: option `%s' requires an argument\n"),
1041 argv[0], argv[d->optind - 1]) >= 0)
1043 _IO_flockfile (stderr);
1045 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1046 ((_IO_FILE *) stderr)->_flags2
1047 |= _IO_FLAGS2_NOTCANCEL;
1049 if (_IO_fwide (stderr, 0) > 0)
1050 __fwprintf (stderr, L"%s", buf);
1052 fputs (buf, stderr);
1054 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1055 _IO_funlockfile (stderr);
1061 _("%s: option `%s' requires an argument\n"),
1062 argv[0], argv[d->optind - 1]);
1065 d->__nextchar += strlen (d->__nextchar);
1066 return optstring[0] == ':' ? ':' : '?';
1069 d->__nextchar += strlen (d->__nextchar);
1070 if (longind != NULL)
1071 *longind = option_index;
1074 *(pfound->flag) = pfound->val;
1079 d->__nextchar = NULL;
1080 return 'W'; /* Let the application handle it. */
1086 /* This is an option that accepts an argument optionally. */
1087 if (*d->__nextchar != '\0')
1089 d->optarg = d->__nextchar;
1094 d->__nextchar = NULL;
1098 /* This is an option that requires an argument. */
1099 if (*d->__nextchar != '\0')
1101 d->optarg = d->__nextchar;
1102 /* If we end this ARGV-element by taking the rest as an arg,
1103 we must advance to the next element now. */
1106 else if (d->optind == argc)
1110 /* 1003.2 specifies the format of this message. */
1111 #if defined _LIBC && defined USE_IN_LIBIO
1114 if (__asprintf (&buf, _("\
1115 %s: option requires an argument -- %c\n"),
1118 _IO_flockfile (stderr);
1120 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1121 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1123 if (_IO_fwide (stderr, 0) > 0)
1124 __fwprintf (stderr, L"%s", buf);
1126 fputs (buf, stderr);
1128 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1129 _IO_funlockfile (stderr);
1135 _("%s: option requires an argument -- %c\n"),
1140 if (optstring[0] == ':')
1146 /* We already incremented `optind' once;
1147 increment it again when taking next ARGV-elt as argument. */
1148 d->optarg = argv[d->optind++];
1149 d->__nextchar = NULL;
1157 _getopt_internal (int argc, char *const *argv, const char *optstring,
1158 const struct option *longopts, int *longind, int long_only)
1162 getopt_data.optind = optind;
1163 getopt_data.opterr = opterr;
1165 result = _getopt_internal_r (argc, argv, optstring, longopts,
1166 longind, long_only, &getopt_data);
1168 optind = getopt_data.optind;
1169 optarg = getopt_data.optarg;
1170 optopt = getopt_data.optopt;
1176 getopt (int argc, char *const *argv, const char *optstring)
1178 return _getopt_internal (argc, argv, optstring,
1179 (const struct option *) 0,
1184 #endif /* Not ELIDE_CODE. */
1188 /* Compile with -DTEST to make an executable for use in testing
1189 the above definition of `getopt'. */
1192 main (int argc, char **argv)
1195 int digit_optind = 0;
1199 int this_option_optind = optind ? optind : 1;
1201 c = getopt (argc, argv, "abc:d:0123456789");
1217 if (digit_optind != 0 && digit_optind != this_option_optind)
1218 printf ("digits occur in two different argv-elements.\n");
1219 digit_optind = this_option_optind;
1220 printf ("option %c\n", c);
1224 printf ("option a\n");
1228 printf ("option b\n");
1232 printf ("option c with value `%s'\n", optarg);
1239 printf ("?? getopt returned character code 0%o ??\n", c);
1245 printf ("non-option ARGV-elements: ");
1246 while (optind < argc)
1247 printf ("%s ", argv[optind++]);