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 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>. */
30 #define HAVE_CONFIG_H /* needed for Wine */
36 #if !defined __STDC__ || !__STDC__
37 /* This is a separate conditional since some stdc systems
38 reject `defined (const)'. */
46 /* Comment out all this code if we are using the GNU C Library, and are not
47 actually compiling the library itself. This code is part of the GNU C
48 Library, but also included in many other GNU distributions. Compiling
49 and linking in this code is a waste when using the GNU C library
50 (especially if it is a shared library). Rather than having every GNU
51 program understand `configure --with-gnu-libc' and omit the object files,
52 it is simpler to just do this in the source for each such file. */
54 #define GETOPT_INTERFACE_VERSION 2
55 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
56 # include <gnu-versions.h>
57 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
65 /* This needs to come after some library #include
66 to get __GNU_LIBRARY__ defined. */
67 #ifdef __GNU_LIBRARY__
68 /* Don't include stdlib.h for non-GNU C libraries because some of them
69 contain conflicting prototypes for getopt. */
72 #endif /* GNU C library. */
76 # if HAVE_STRING_H - 0
82 /* This is for other GNU distributions with internationalized messages. */
83 # if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
86 # define _(msgid) gettext (msgid)
89 # define _(msgid) (msgid)
91 # if defined _LIBC && defined USE_IN_LIBIO
96 #ifndef attribute_hidden
97 # define attribute_hidden
100 /* This version of `getopt' appears to the caller like standard Unix `getopt'
101 but it behaves differently for the user, since it allows the user
102 to intersperse the options with the other arguments.
104 As `getopt' works, it permutes the elements of ARGV so that,
105 when it is done, all the options precede everything else. Thus
106 all application programs are extended to handle flexible argument order.
108 Setting the environment variable POSIXLY_CORRECT disables permutation.
109 Then the behavior is completely standard.
111 GNU application programs can use a third alternative mode in which
112 they can distinguish the relative order of options and other arguments. */
116 /* For communication from `getopt' to the caller.
117 When `getopt' finds an option that takes an argument,
118 the argument value is returned here.
119 Also, when `ordering' is RETURN_IN_ORDER,
120 each non-option ARGV-element is returned here. */
124 /* Index in ARGV of the next element to be scanned.
125 This is used for communication to and from the caller
126 and for communication between successive calls to `getopt'.
128 On entry to `getopt', zero means this is the first call; initialize.
130 When `getopt' returns -1, this is the index of the first of the
131 non-option elements that the caller should itself scan.
133 Otherwise, `optind' communicates from one call to the next
134 how much of ARGV has been scanned so far. */
136 /* 1003.2 says this must be 1 before any call. */
139 /* Formerly, initialization of getopt depended on optind==0, which
140 causes problems with re-calling getopt as programs generally don't
143 int __getopt_initialized attribute_hidden;
145 /* The next char to be scanned in the option-element
146 in which the last option character we returned was found.
147 This allows us to pick up the scan where we left off.
149 If this is zero, or a null string, it means resume the scan
150 by advancing to the next ARGV-element. */
152 static char *nextchar;
154 /* Callers store zero here to inhibit the error message
155 for unrecognized options. */
159 /* Set to an option character which was unrecognized.
160 This must be initialized on some systems to avoid linking in the
161 system's own getopt implementation. */
165 /* Describe how to deal with options that follow non-option ARGV-elements.
167 If the caller did not specify anything,
168 the default is REQUIRE_ORDER if the environment variable
169 POSIXLY_CORRECT is defined, PERMUTE otherwise.
171 REQUIRE_ORDER means don't recognize them as options;
172 stop option processing when the first non-option is seen.
173 This is what Unix does.
174 This mode of operation is selected by either setting the environment
175 variable POSIXLY_CORRECT, or using `+' as the first character
176 of the list of option characters.
178 PERMUTE is the default. We permute the contents of ARGV as we scan,
179 so that eventually all the non-options are at the end. This allows options
180 to be given in any order, even with programs that were not written to
183 RETURN_IN_ORDER is an option available to programs that were written
184 to expect options and other ARGV-elements in any order and that care about
185 the ordering of the two. We describe each non-option ARGV-element
186 as if it were the argument of an option with character code 1.
187 Using `-' as the first character of the list of option characters
188 selects this mode of operation.
190 The special argument `--' forces an end of option-scanning regardless
191 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
192 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
196 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
199 /* Value of POSIXLY_CORRECT environment variable. */
200 static char *posixly_correct;
202 #ifdef __GNU_LIBRARY__
203 /* We want to avoid inclusion of string.h with non-GNU libraries
204 because there are many ways it can cause trouble.
205 On some systems, it contains special magic macros that don't work
208 # define my_index strchr
214 # include <strings.h>
217 /* Avoid depending on library functions or files
218 whose names are inconsistent. */
221 extern char *getenv ();
238 /* If using GCC, we can safely declare strlen this way.
239 If not using GCC, it is ok not to declare it. */
241 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
242 That was relevant to code that was here before. */
243 # if (!defined __STDC__ || !__STDC__) && !defined strlen
244 /* gcc with -traditional declares the built-in strlen to return int,
245 and has done so at least since version 2.4.5. -- rms. */
246 extern int strlen (const char *);
247 # endif /* not __STDC__ */
248 #endif /* __GNUC__ */
250 #endif /* not __GNU_LIBRARY__ */
252 /* Handle permutation of arguments. */
254 /* Describe the part of ARGV that contains non-options that have
255 been skipped. `first_nonopt' is the index in ARGV of the first of them;
256 `last_nonopt' is the index after the last of them. */
258 static int first_nonopt;
259 static int last_nonopt;
262 /* Stored original parameters.
263 XXX This is no good solution. We should rather copy the args so
264 that we can compare them later. But we must not use malloc(3). */
265 extern int __libc_argc;
266 extern char **__libc_argv;
268 /* Bash 2.0 gives us an environment variable containing flags
269 indicating ARGV elements that should not be considered arguments. */
271 # ifdef USE_NONOPTION_FLAGS
272 /* Defined in getopt_init.c */
273 extern char *__getopt_nonoption_flags;
275 static int nonoption_flags_max_len;
276 static int nonoption_flags_len;
279 # ifdef USE_NONOPTION_FLAGS
280 # define SWAP_FLAGS(ch1, ch2) \
281 if (nonoption_flags_len > 0) \
283 char __tmp = __getopt_nonoption_flags[ch1]; \
284 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
285 __getopt_nonoption_flags[ch2] = __tmp; \
288 # define SWAP_FLAGS(ch1, ch2)
291 # define SWAP_FLAGS(ch1, ch2)
294 /* Exchange two adjacent subsequences of ARGV.
295 One subsequence is elements [first_nonopt,last_nonopt)
296 which contains all the non-options that have been skipped so far.
297 The other is elements [last_nonopt,optind), which contains all
298 the options processed since those non-options were skipped.
300 `first_nonopt' and `last_nonopt' are relocated so that they describe
301 the new indices of the non-options in ARGV after they are moved. */
303 #if defined __STDC__ && __STDC__
304 static void exchange (char **);
311 int bottom = first_nonopt;
312 int middle = last_nonopt;
316 /* Exchange the shorter segment with the far end of the longer segment.
317 That puts the shorter segment into the right place.
318 It leaves the longer segment in the right place overall,
319 but it consists of two parts that need to be swapped next. */
321 #if defined _LIBC && defined USE_NONOPTION_FLAGS
322 /* First make sure the handling of the `__getopt_nonoption_flags'
323 string can work normally. Our top argument must be in the range
325 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
327 /* We must extend the array. The user plays games with us and
328 presents new arguments. */
329 char *new_str = malloc (top + 1);
331 nonoption_flags_len = nonoption_flags_max_len = 0;
334 memset (__mempcpy (new_str, __getopt_nonoption_flags,
335 nonoption_flags_max_len),
336 '\0', top + 1 - nonoption_flags_max_len);
337 nonoption_flags_max_len = top + 1;
338 __getopt_nonoption_flags = new_str;
343 while (top > middle && middle > bottom)
345 if (top - middle > middle - bottom)
347 /* Bottom segment is the short one. */
348 int len = middle - bottom;
351 /* Swap it with the top part of the top segment. */
352 for (i = 0; i < len; i++)
354 tem = argv[bottom + i];
355 argv[bottom + i] = argv[top - (middle - bottom) + i];
356 argv[top - (middle - bottom) + i] = tem;
357 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
359 /* Exclude the moved bottom segment from further swapping. */
364 /* Top segment is the short one. */
365 int len = top - middle;
368 /* Swap it with the bottom part of the bottom segment. */
369 for (i = 0; i < len; i++)
371 tem = argv[bottom + i];
372 argv[bottom + i] = argv[middle + i];
373 argv[middle + i] = tem;
374 SWAP_FLAGS (bottom + i, middle + i);
376 /* Exclude the moved top segment from further swapping. */
381 /* Update records for the slots the non-options now occupy. */
383 first_nonopt += (optind - last_nonopt);
384 last_nonopt = optind;
387 /* Initialize the internal data when the first call is made. */
389 #if defined __STDC__ && __STDC__
390 static const char *_getopt_initialize (int, char *const *, const char *);
393 _getopt_initialize (argc, argv, optstring)
396 const char *optstring;
398 /* Start processing options with ARGV-element 1 (since ARGV-element 0
399 is the program name); the sequence of previously skipped
400 non-option ARGV-elements is empty. */
402 first_nonopt = last_nonopt = optind;
406 posixly_correct = getenv ("POSIXLY_CORRECT");
408 /* Determine how to handle the ordering of options and nonoptions. */
410 if (optstring[0] == '-')
412 ordering = RETURN_IN_ORDER;
415 else if (optstring[0] == '+')
417 ordering = REQUIRE_ORDER;
420 else if (posixly_correct != NULL)
421 ordering = REQUIRE_ORDER;
425 #if defined _LIBC && defined USE_NONOPTION_FLAGS
426 if (posixly_correct == NULL
427 && argc == __libc_argc && argv == __libc_argv)
429 if (nonoption_flags_max_len == 0)
431 if (__getopt_nonoption_flags == NULL
432 || __getopt_nonoption_flags[0] == '\0')
433 nonoption_flags_max_len = -1;
436 const char *orig_str = __getopt_nonoption_flags;
437 int len = nonoption_flags_max_len = strlen (orig_str);
438 if (nonoption_flags_max_len < argc)
439 nonoption_flags_max_len = argc;
440 __getopt_nonoption_flags =
441 (char *) malloc (nonoption_flags_max_len);
442 if (__getopt_nonoption_flags == NULL)
443 nonoption_flags_max_len = -1;
445 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
446 '\0', nonoption_flags_max_len - len);
449 nonoption_flags_len = nonoption_flags_max_len;
452 nonoption_flags_len = 0;
458 /* Scan elements of ARGV (whose length is ARGC) for option characters
461 If an element of ARGV starts with '-', and is not exactly "-" or "--",
462 then it is an option element. The characters of this element
463 (aside from the initial '-') are option characters. If `getopt'
464 is called repeatedly, it returns successively each of the option characters
465 from each of the option elements.
467 If `getopt' finds another option character, it returns that character,
468 updating `optind' and `nextchar' so that the next call to `getopt' can
469 resume the scan with the following option character or ARGV-element.
471 If there are no more option characters, `getopt' returns -1.
472 Then `optind' is the index in ARGV of the first ARGV-element
473 that is not an option. (The ARGV-elements have been permuted
474 so that those that are not options now come last.)
476 OPTSTRING is a string containing the legitimate option characters.
477 If an option character is seen that is not listed in OPTSTRING,
478 return '?' after printing an error message. If you set `opterr' to
479 zero, the error message is suppressed but we still return '?'.
481 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
482 so the following text in the same ARGV-element, or the text of the following
483 ARGV-element, is returned in `optarg'. Two colons mean an option that
484 wants an optional arg; if there is text in the current ARGV-element,
485 it is returned in `optarg', otherwise `optarg' is set to zero.
487 If OPTSTRING starts with `-' or `+', it requests different methods of
488 handling the non-option ARGV-elements.
489 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
491 Long-named options begin with `--' instead of `-'.
492 Their names may be abbreviated as long as the abbreviation is unique
493 or is an exact match for some defined option. If they have an
494 argument, it follows the option name in the same ARGV-element, separated
495 from the option name by a `=', or else the in next ARGV-element.
496 When `getopt' finds a long-named option, it returns 0 if that option's
497 `flag' field is nonzero, the value of the option's `val' field
498 if the `flag' field is zero.
500 The elements of ARGV aren't really const, because we permute them.
501 But we pretend they're const in the prototype to be compatible
504 LONGOPTS is a vector of `struct option' terminated by an
505 element containing a name which is zero.
507 LONGIND returns the index in LONGOPT of the long-named option found.
508 It is only valid when a long-named option has been found by the most
511 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
512 long-named options. */
515 _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
518 const char *optstring;
519 const struct option *longopts;
523 int print_errors = opterr;
524 if (optstring[0] == ':')
532 if (optind == 0 || !__getopt_initialized)
535 optind = 1; /* Don't scan ARGV[0], the program name. */
536 optstring = _getopt_initialize (argc, argv, optstring);
537 __getopt_initialized = 1;
540 /* Test whether ARGV[optind] points to a non-option argument.
541 Either it does not have option syntax, or there is an environment flag
542 from the shell indicating it is not an option. The later information
543 is only used when the used in the GNU libc. */
544 #if defined _LIBC && defined USE_NONOPTION_FLAGS
545 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
546 || (optind < nonoption_flags_len \
547 && __getopt_nonoption_flags[optind] == '1'))
549 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
552 if (nextchar == NULL || *nextchar == '\0')
554 /* Advance to the next ARGV-element. */
556 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
557 moved back by the user (who may also have changed the arguments). */
558 if (last_nonopt > optind)
559 last_nonopt = optind;
560 if (first_nonopt > optind)
561 first_nonopt = optind;
563 if (ordering == PERMUTE)
565 /* If we have just processed some options following some non-options,
566 exchange them so that the options come first. */
568 if (first_nonopt != last_nonopt && last_nonopt != optind)
569 exchange ((char **) argv);
570 else if (last_nonopt != optind)
571 first_nonopt = optind;
573 /* Skip any additional non-options
574 and extend the range of non-options previously skipped. */
576 while (optind < argc && NONOPTION_P)
578 last_nonopt = optind;
581 /* The special ARGV-element `--' means premature end of options.
582 Skip it like a null option,
583 then exchange with previous non-options as if it were an option,
584 then skip everything else like a non-option. */
586 if (optind != argc && !strcmp (argv[optind], "--"))
590 if (first_nonopt != last_nonopt && last_nonopt != optind)
591 exchange ((char **) argv);
592 else if (first_nonopt == last_nonopt)
593 first_nonopt = optind;
599 /* If we have done all the ARGV-elements, stop the scan
600 and back over any non-options that we skipped and permuted. */
604 /* Set the next-arg-index to point at the non-options
605 that we previously skipped, so the caller will digest them. */
606 if (first_nonopt != last_nonopt)
607 optind = first_nonopt;
611 /* If we have come to a non-option and did not permute it,
612 either stop the scan or describe it to the caller and pass it by. */
616 if (ordering == REQUIRE_ORDER)
618 optarg = argv[optind++];
622 /* We have found another option-ARGV-element.
623 Skip the initial punctuation. */
625 nextchar = (argv[optind] + 1
626 + (longopts != NULL && argv[optind][1] == '-'));
629 /* Decode the current option-ARGV-element. */
631 /* Check whether the ARGV-element is a long option.
633 If long_only and the ARGV-element has the form "-f", where f is
634 a valid short option, don't consider it an abbreviated form of
635 a long option that starts with f. Otherwise there would be no
636 way to give the -f short option.
638 On the other hand, if there's a long option "fubar" and
639 the ARGV-element is "-fu", do consider that an abbreviation of
640 the long option, just like "--fu", and not "-f" with arg "u".
642 This distinction seems to be the most useful approach. */
645 && (argv[optind][1] == '-'
646 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
649 const struct option *p;
650 const struct option *pfound = NULL;
656 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
659 /* Test all long options for either exact match
660 or abbreviated matches. */
661 for (p = longopts, option_index = 0; p->name; p++, option_index++)
662 if (!strncmp (p->name, nextchar, nameend - nextchar))
664 if ((unsigned int) (nameend - nextchar)
665 == (unsigned int) strlen (p->name))
667 /* Exact match found. */
669 indfound = option_index;
673 else if (pfound == NULL)
675 /* First nonexact match found. */
677 indfound = option_index;
680 || pfound->has_arg != p->has_arg
681 || pfound->flag != p->flag
682 || pfound->val != p->val)
683 /* Second or later nonexact match found. */
691 #if defined _LIBC && defined USE_IN_LIBIO
694 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
695 argv[0], argv[optind]) >= 0)
698 if (_IO_fwide (stderr, 0) > 0)
699 __fwprintf (stderr, L"%s", buf);
706 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
707 argv[0], argv[optind]);
710 nextchar += strlen (nextchar);
718 option_index = indfound;
722 /* Don't test has_arg with >, because some C compilers don't
723 allow it to be used on enums. */
725 optarg = nameend + 1;
730 #if defined _LIBC && defined USE_IN_LIBIO
735 if (argv[optind - 1][1] == '-')
738 #if defined _LIBC && defined USE_IN_LIBIO
739 n = __asprintf (&buf, _("\
740 %s: option `--%s' doesn't allow an argument\n"),
741 argv[0], pfound->name);
743 fprintf (stderr, _("\
744 %s: option `--%s' doesn't allow an argument\n"),
745 argv[0], pfound->name);
750 /* +option or -option */
751 #if defined _LIBC && defined USE_IN_LIBIO
752 n = __asprintf (&buf, _("\
753 %s: option `%c%s' doesn't allow an argument\n"),
754 argv[0], argv[optind - 1][0],
757 fprintf (stderr, _("\
758 %s: option `%c%s' doesn't allow an argument\n"),
759 argv[0], argv[optind - 1][0], pfound->name);
763 #if defined _LIBC && defined USE_IN_LIBIO
766 if (_IO_fwide (stderr, 0) > 0)
767 __fwprintf (stderr, L"%s", buf);
776 nextchar += strlen (nextchar);
778 optopt = pfound->val;
782 else if (pfound->has_arg == 1)
785 optarg = argv[optind++];
790 #if defined _LIBC && defined USE_IN_LIBIO
793 if (__asprintf (&buf, _("\
794 %s: option `%s' requires an argument\n"),
795 argv[0], argv[optind - 1]) >= 0)
797 if (_IO_fwide (stderr, 0) > 0)
798 __fwprintf (stderr, L"%s", buf);
806 _("%s: option `%s' requires an argument\n"),
807 argv[0], argv[optind - 1]);
810 nextchar += strlen (nextchar);
811 optopt = pfound->val;
812 return optstring[0] == ':' ? ':' : '?';
815 nextchar += strlen (nextchar);
817 *longind = option_index;
820 *(pfound->flag) = pfound->val;
826 /* Can't find it as a long option. If this is not getopt_long_only,
827 or the option starts with '--' or is not a valid short
828 option, then it's an error.
829 Otherwise interpret it as a short option. */
830 if (!long_only || argv[optind][1] == '-'
831 || my_index (optstring, *nextchar) == NULL)
835 #if defined _LIBC && defined USE_IN_LIBIO
840 if (argv[optind][1] == '-')
843 #if defined _LIBC && defined USE_IN_LIBIO
844 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
847 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
853 /* +option or -option */
854 #if defined _LIBC && defined USE_IN_LIBIO
855 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
856 argv[0], argv[optind][0], nextchar);
858 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
859 argv[0], argv[optind][0], nextchar);
863 #if defined _LIBC && defined USE_IN_LIBIO
866 if (_IO_fwide (stderr, 0) > 0)
867 __fwprintf (stderr, L"%s", buf);
875 nextchar = (char *) "";
882 /* Look at and handle the next short option-character. */
885 char c = *nextchar++;
886 char *temp = my_index (optstring, c);
888 /* Increment `optind' when we start to process its last character. */
889 if (*nextchar == '\0')
892 if (temp == NULL || c == ':')
896 #if defined _LIBC && defined USE_IN_LIBIO
903 /* 1003.2 specifies the format of this message. */
904 #if defined _LIBC && defined USE_IN_LIBIO
905 n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
908 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
913 #if defined _LIBC && defined USE_IN_LIBIO
914 n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
917 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
921 #if defined _LIBC && defined USE_IN_LIBIO
924 if (_IO_fwide (stderr, 0) > 0)
925 __fwprintf (stderr, L"%s", buf);
936 /* Convenience. Treat POSIX -W foo same as long option --foo */
937 if (temp[0] == 'W' && temp[1] == ';')
940 const struct option *p;
941 const struct option *pfound = NULL;
947 /* This is an option that requires an argument. */
948 if (*nextchar != '\0')
951 /* If we end this ARGV-element by taking the rest as an arg,
952 we must advance to the next element now. */
955 else if (optind == argc)
959 /* 1003.2 specifies the format of this message. */
960 #if defined _LIBC && defined USE_IN_LIBIO
963 if (__asprintf (&buf,
964 _("%s: option requires an argument -- %c\n"),
967 if (_IO_fwide (stderr, 0) > 0)
968 __fwprintf (stderr, L"%s", buf);
975 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
980 if (optstring[0] == ':')
987 /* We already incremented `optind' once;
988 increment it again when taking next ARGV-elt as argument. */
989 optarg = argv[optind++];
991 /* optarg is now the argument, see if it's in the
992 table of longopts. */
994 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
997 /* Test all long options for either exact match
998 or abbreviated matches. */
999 for (p = longopts, option_index = 0; p->name; p++, option_index++)
1000 if (!strncmp (p->name, nextchar, nameend - nextchar))
1002 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
1004 /* Exact match found. */
1006 indfound = option_index;
1010 else if (pfound == NULL)
1012 /* First nonexact match found. */
1014 indfound = option_index;
1017 /* Second or later nonexact match found. */
1020 if (ambig && !exact)
1024 #if defined _LIBC && defined USE_IN_LIBIO
1027 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
1028 argv[0], argv[optind]) >= 0)
1030 if (_IO_fwide (stderr, 0) > 0)
1031 __fwprintf (stderr, L"%s", buf);
1033 fputs (buf, stderr);
1038 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
1039 argv[0], argv[optind]);
1042 nextchar += strlen (nextchar);
1048 option_index = indfound;
1051 /* Don't test has_arg with >, because some C compilers don't
1052 allow it to be used on enums. */
1053 if (pfound->has_arg)
1054 optarg = nameend + 1;
1059 #if defined _LIBC && defined USE_IN_LIBIO
1062 if (__asprintf (&buf, _("\
1063 %s: option `-W %s' doesn't allow an argument\n"),
1064 argv[0], pfound->name) >= 0)
1066 if (_IO_fwide (stderr, 0) > 0)
1067 __fwprintf (stderr, L"%s", buf);
1069 fputs (buf, stderr);
1074 fprintf (stderr, _("\
1075 %s: option `-W %s' doesn't allow an argument\n"),
1076 argv[0], pfound->name);
1080 nextchar += strlen (nextchar);
1084 else if (pfound->has_arg == 1)
1087 optarg = argv[optind++];
1092 #if defined _LIBC && defined USE_IN_LIBIO
1095 if (__asprintf (&buf, _("\
1096 %s: option `%s' requires an argument\n"),
1097 argv[0], argv[optind - 1]) >= 0)
1099 if (_IO_fwide (stderr, 0) > 0)
1100 __fwprintf (stderr, L"%s", buf);
1102 fputs (buf, stderr);
1108 _("%s: option `%s' requires an argument\n"),
1109 argv[0], argv[optind - 1]);
1112 nextchar += strlen (nextchar);
1113 return optstring[0] == ':' ? ':' : '?';
1116 nextchar += strlen (nextchar);
1117 if (longind != NULL)
1118 *longind = option_index;
1121 *(pfound->flag) = pfound->val;
1127 return 'W'; /* Let the application handle it. */
1133 /* This is an option that accepts an argument optionally. */
1134 if (*nextchar != '\0')
1145 /* This is an option that requires an argument. */
1146 if (*nextchar != '\0')
1149 /* If we end this ARGV-element by taking the rest as an arg,
1150 we must advance to the next element now. */
1153 else if (optind == argc)
1157 /* 1003.2 specifies the format of this message. */
1158 #if defined _LIBC && defined USE_IN_LIBIO
1161 if (__asprintf (&buf, _("\
1162 %s: option requires an argument -- %c\n"),
1165 if (_IO_fwide (stderr, 0) > 0)
1166 __fwprintf (stderr, L"%s", buf);
1168 fputs (buf, stderr);
1174 _("%s: option requires an argument -- %c\n"),
1179 if (optstring[0] == ':')
1185 /* We already incremented `optind' once;
1186 increment it again when taking next ARGV-elt as argument. */
1187 optarg = argv[optind++];
1196 getopt (argc, argv, optstring)
1199 const char *optstring;
1201 return _getopt_internal (argc, argv, optstring,
1202 (const struct option *) 0,
1207 #endif /* Not ELIDE_CODE. */
1211 /* Compile with -DTEST to make an executable for use in testing
1212 the above definition of `getopt'. */
1220 int digit_optind = 0;
1224 int this_option_optind = optind ? optind : 1;
1226 c = getopt (argc, argv, "abc:d:0123456789");
1242 if (digit_optind != 0 && digit_optind != this_option_optind)
1243 printf ("digits occur in two different argv-elements.\n");
1244 digit_optind = this_option_optind;
1245 printf ("option %c\n", c);
1249 printf ("option a\n");
1253 printf ("option b\n");
1257 printf ("option c with value `%s'\n", optarg);
1264 printf ("?? getopt returned character code 0%o ??\n", c);
1270 printf ("non-option ARGV-elements: ");
1271 while (optind < argc)
1272 printf ("%s ", argv[optind++]);