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
48 //# define ELIDE_CODE // SHERLOCK: disabled
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. */
73 //# include "gettext.h" // SHERLOCK: replaced by <libintl.h>
75 # define _(msgid) gettext (msgid)
78 #if defined _LIBC && defined USE_IN_LIBIO
82 #ifndef attribute_hidden
83 # define attribute_hidden
86 /* This version of `getopt' appears to the caller like standard Unix `getopt'
87 but it behaves differently for the user, since it allows the user
88 to intersperse the options with the other arguments.
90 As `getopt' works, it permutes the elements of ARGV so that,
91 when it is done, all the options precede everything else. Thus
92 all application programs are extended to handle flexible argument order.
94 Setting the environment variable POSIXLY_CORRECT disables permutation.
95 Then the behavior is completely standard.
97 GNU application programs can use a third alternative mode in which
98 they can distinguish the relative order of options and other arguments. */
101 #include "getopt_int.h"
103 /* For communication from `getopt' to the caller.
104 When `getopt' finds an option that takes an argument,
105 the argument value is returned here.
106 Also, when `ordering' is RETURN_IN_ORDER,
107 each non-option ARGV-element is returned here. */
111 /* Index in ARGV of the next element to be scanned.
112 This is used for communication to and from the caller
113 and for communication between successive calls to `getopt'.
115 On entry to `getopt', zero means this is the first call; initialize.
117 When `getopt' returns -1, this is the index of the first of the
118 non-option elements that the caller should itself scan.
120 Otherwise, `optind' communicates from one call to the next
121 how much of ARGV has been scanned so far. */
123 /* 1003.2 says this must be 1 before any call. */
126 /* Callers store zero here to inhibit the error message
127 for unrecognized options. */
131 /* Set to an option character which was unrecognized.
132 This must be initialized on some systems to avoid linking in the
133 system's own getopt implementation. */
137 /* Keep a global copy of all internal members of getopt_data. */
139 static struct _getopt_data getopt_data;
142 #ifndef __GNU_LIBRARY__
144 /* Avoid depending on library functions or files
145 whose names are inconsistent. */
148 extern char *getenv ();
151 #endif /* not __GNU_LIBRARY__ */
154 /* Stored original parameters.
155 XXX This is no good solution. We should rather copy the args so
156 that we can compare them later. But we must not use malloc(3). */
157 extern int __libc_argc;
158 extern char **__libc_argv;
160 /* Bash 2.0 gives us an environment variable containing flags
161 indicating ARGV elements that should not be considered arguments. */
163 # ifdef USE_NONOPTION_FLAGS
164 /* Defined in getopt_init.c */
165 extern char *__getopt_nonoption_flags;
168 # ifdef USE_NONOPTION_FLAGS
169 # define SWAP_FLAGS(ch1, ch2) \
170 if (d->__nonoption_flags_len > 0) \
172 char __tmp = __getopt_nonoption_flags[ch1]; \
173 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
174 __getopt_nonoption_flags[ch2] = __tmp; \
177 # define SWAP_FLAGS(ch1, ch2)
180 # define SWAP_FLAGS(ch1, ch2)
183 /* Exchange two adjacent subsequences of ARGV.
184 One subsequence is elements [first_nonopt,last_nonopt)
185 which contains all the non-options that have been skipped so far.
186 The other is elements [last_nonopt,optind), which contains all
187 the options processed since those non-options were skipped.
189 `first_nonopt' and `last_nonopt' are relocated so that they describe
190 the new indices of the non-options in ARGV after they are moved. */
193 exchange (char **argv, struct _getopt_data *d)
195 int bottom = d->__first_nonopt;
196 int middle = d->__last_nonopt;
200 /* Exchange the shorter segment with the far end of the longer segment.
201 That puts the shorter segment into the right place.
202 It leaves the longer segment in the right place overall,
203 but it consists of two parts that need to be swapped next. */
205 #if defined _LIBC && defined USE_NONOPTION_FLAGS
206 /* First make sure the handling of the `__getopt_nonoption_flags'
207 string can work normally. Our top argument must be in the range
209 if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len)
211 /* We must extend the array. The user plays games with us and
212 presents new arguments. */
213 char *new_str = malloc (top + 1);
215 d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0;
218 memset (__mempcpy (new_str, __getopt_nonoption_flags,
219 d->__nonoption_flags_max_len),
220 '\0', top + 1 - d->__nonoption_flags_max_len);
221 d->__nonoption_flags_max_len = top + 1;
222 __getopt_nonoption_flags = new_str;
227 while (top > middle && middle > bottom)
229 if (top - middle > middle - bottom)
231 /* Bottom segment is the short one. */
232 int len = middle - bottom;
235 /* Swap it with the top part of the top segment. */
236 for (i = 0; i < len; i++)
238 tem = argv[bottom + i];
239 argv[bottom + i] = argv[top - (middle - bottom) + i];
240 argv[top - (middle - bottom) + i] = tem;
241 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
243 /* Exclude the moved bottom segment from further swapping. */
248 /* Top segment is the short one. */
249 int len = top - middle;
252 /* Swap it with the bottom part of the bottom segment. */
253 for (i = 0; i < len; i++)
255 tem = argv[bottom + i];
256 argv[bottom + i] = argv[middle + i];
257 argv[middle + i] = tem;
258 SWAP_FLAGS (bottom + i, middle + i);
260 /* Exclude the moved top segment from further swapping. */
265 /* Update records for the slots the non-options now occupy. */
267 d->__first_nonopt += (d->optind - d->__last_nonopt);
268 d->__last_nonopt = d->optind;
271 /* Initialize the internal data when the first call is made. */
274 _getopt_initialize (int argc, char *const *argv, const char *optstring,
275 struct _getopt_data *d)
277 /* Start processing options with ARGV-element 1 (since ARGV-element 0
278 is the program name); the sequence of previously skipped
279 non-option ARGV-elements is empty. */
281 d->__first_nonopt = d->__last_nonopt = d->optind;
283 d->__nextchar = NULL;
285 d->__posixly_correct = !!getenv ("POSIXLY_CORRECT");
287 /* Determine how to handle the ordering of options and nonoptions. */
289 if (optstring[0] == '-')
291 d->__ordering = RETURN_IN_ORDER;
294 else if (optstring[0] == '+')
296 d->__ordering = REQUIRE_ORDER;
299 else if (d->__posixly_correct)
300 d->__ordering = REQUIRE_ORDER;
302 d->__ordering = PERMUTE;
304 #if defined _LIBC && defined USE_NONOPTION_FLAGS
305 if (!d->__posixly_correct
306 && argc == __libc_argc && argv == __libc_argv)
308 if (d->__nonoption_flags_max_len == 0)
310 if (__getopt_nonoption_flags == NULL
311 || __getopt_nonoption_flags[0] == '\0')
312 d->__nonoption_flags_max_len = -1;
315 const char *orig_str = __getopt_nonoption_flags;
316 int len = d->__nonoption_flags_max_len = strlen (orig_str);
317 if (d->__nonoption_flags_max_len < argc)
318 d->__nonoption_flags_max_len = argc;
319 __getopt_nonoption_flags =
320 (char *) malloc (d->__nonoption_flags_max_len);
321 if (__getopt_nonoption_flags == NULL)
322 d->__nonoption_flags_max_len = -1;
324 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
325 '\0', d->__nonoption_flags_max_len - len);
328 d->__nonoption_flags_len = d->__nonoption_flags_max_len;
331 d->__nonoption_flags_len = 0;
337 /* Scan elements of ARGV (whose length is ARGC) for option characters
340 If an element of ARGV starts with '-', and is not exactly "-" or "--",
341 then it is an option element. The characters of this element
342 (aside from the initial '-') are option characters. If `getopt'
343 is called repeatedly, it returns successively each of the option characters
344 from each of the option elements.
346 If `getopt' finds another option character, it returns that character,
347 updating `optind' and `nextchar' so that the next call to `getopt' can
348 resume the scan with the following option character or ARGV-element.
350 If there are no more option characters, `getopt' returns -1.
351 Then `optind' is the index in ARGV of the first ARGV-element
352 that is not an option. (The ARGV-elements have been permuted
353 so that those that are not options now come last.)
355 OPTSTRING is a string containing the legitimate option characters.
356 If an option character is seen that is not listed in OPTSTRING,
357 return '?' after printing an error message. If you set `opterr' to
358 zero, the error message is suppressed but we still return '?'.
360 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
361 so the following text in the same ARGV-element, or the text of the following
362 ARGV-element, is returned in `optarg'. Two colons mean an option that
363 wants an optional arg; if there is text in the current ARGV-element,
364 it is returned in `optarg', otherwise `optarg' is set to zero.
366 If OPTSTRING starts with `-' or `+', it requests different methods of
367 handling the non-option ARGV-elements.
368 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
370 Long-named options begin with `--' instead of `-'.
371 Their names may be abbreviated as long as the abbreviation is unique
372 or is an exact match for some defined option. If they have an
373 argument, it follows the option name in the same ARGV-element, separated
374 from the option name by a `=', or else the in next ARGV-element.
375 When `getopt' finds a long-named option, it returns 0 if that option's
376 `flag' field is nonzero, the value of the option's `val' field
377 if the `flag' field is zero.
379 The elements of ARGV aren't really const, because we permute them.
380 But we pretend they're const in the prototype to be compatible
383 LONGOPTS is a vector of `struct option' terminated by an
384 element containing a name which is zero.
386 LONGIND returns the index in LONGOPT of the long-named option found.
387 It is only valid when a long-named option has been found by the most
390 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
391 long-named options. */
394 _getopt_internal_r (int argc, char *const *argv, const char *optstring,
395 const struct option *longopts, int *longind,
396 int long_only, struct _getopt_data *d)
398 int print_errors = d->opterr;
399 if (optstring[0] == ':')
407 if (d->optind == 0 || !d->__initialized)
410 d->optind = 1; /* Don't scan ARGV[0], the program name. */
411 optstring = _getopt_initialize (argc, argv, optstring, d);
412 d->__initialized = 1;
415 /* Test whether ARGV[optind] points to a non-option argument.
416 Either it does not have option syntax, or there is an environment flag
417 from the shell indicating it is not an option. The later information
418 is only used when the used in the GNU libc. */
419 #if defined _LIBC && defined USE_NONOPTION_FLAGS
420 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
421 || (d->optind < d->__nonoption_flags_len \
422 && __getopt_nonoption_flags[d->optind] == '1'))
424 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
427 if (d->__nextchar == NULL || *d->__nextchar == '\0')
429 /* Advance to the next ARGV-element. */
431 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
432 moved back by the user (who may also have changed the arguments). */
433 if (d->__last_nonopt > d->optind)
434 d->__last_nonopt = d->optind;
435 if (d->__first_nonopt > d->optind)
436 d->__first_nonopt = d->optind;
438 if (d->__ordering == PERMUTE)
440 /* If we have just processed some options following some non-options,
441 exchange them so that the options come first. */
443 if (d->__first_nonopt != d->__last_nonopt
444 && d->__last_nonopt != d->optind)
445 exchange ((char **) argv, d);
446 else if (d->__last_nonopt != d->optind)
447 d->__first_nonopt = d->optind;
449 /* Skip any additional non-options
450 and extend the range of non-options previously skipped. */
452 while (d->optind < argc && NONOPTION_P)
454 d->__last_nonopt = d->optind;
457 /* The special ARGV-element `--' means premature end of options.
458 Skip it like a null option,
459 then exchange with previous non-options as if it were an option,
460 then skip everything else like a non-option. */
462 if (d->optind != argc && !strcmp (argv[d->optind], "--"))
466 if (d->__first_nonopt != d->__last_nonopt
467 && d->__last_nonopt != d->optind)
468 exchange ((char **) argv, d);
469 else if (d->__first_nonopt == d->__last_nonopt)
470 d->__first_nonopt = d->optind;
471 d->__last_nonopt = argc;
476 /* If we have done all the ARGV-elements, stop the scan
477 and back over any non-options that we skipped and permuted. */
479 if (d->optind == argc)
481 /* Set the next-arg-index to point at the non-options
482 that we previously skipped, so the caller will digest them. */
483 if (d->__first_nonopt != d->__last_nonopt)
484 d->optind = d->__first_nonopt;
488 /* If we have come to a non-option and did not permute it,
489 either stop the scan or describe it to the caller and pass it by. */
493 if (d->__ordering == REQUIRE_ORDER)
495 d->optarg = argv[d->optind++];
499 /* We have found another option-ARGV-element.
500 Skip the initial punctuation. */
502 d->__nextchar = (argv[d->optind] + 1
503 + (longopts != NULL && argv[d->optind][1] == '-'));
506 /* Decode the current option-ARGV-element. */
508 /* Check whether the ARGV-element is a long option.
510 If long_only and the ARGV-element has the form "-f", where f is
511 a valid short option, don't consider it an abbreviated form of
512 a long option that starts with f. Otherwise there would be no
513 way to give the -f short option.
515 On the other hand, if there's a long option "fubar" and
516 the ARGV-element is "-fu", do consider that an abbreviation of
517 the long option, just like "--fu", and not "-f" with arg "u".
519 This distinction seems to be the most useful approach. */
522 && (argv[d->optind][1] == '-'
523 || (long_only && (argv[d->optind][2]
524 || !strchr (optstring, argv[d->optind][1])))))
527 const struct option *p;
528 const struct option *pfound = NULL;
534 for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
537 /* Test all long options for either exact match
538 or abbreviated matches. */
539 for (p = longopts, option_index = 0; p->name; p++, option_index++)
540 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
542 if ((unsigned int) (nameend - d->__nextchar)
543 == (unsigned int) strlen (p->name))
545 /* Exact match found. */
547 indfound = option_index;
551 else if (pfound == NULL)
553 /* First nonexact match found. */
555 indfound = option_index;
558 || pfound->has_arg != p->has_arg
559 || pfound->flag != p->flag
560 || pfound->val != p->val)
561 /* Second or later nonexact match found. */
569 #if defined _LIBC && defined USE_IN_LIBIO
572 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
573 argv[0], argv[d->optind]) >= 0)
575 _IO_flockfile (stderr);
577 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
578 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
580 __fxprintf (NULL, "%s", buf);
582 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
583 _IO_funlockfile (stderr);
588 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
589 argv[0], argv[d->optind]);
592 d->__nextchar += strlen (d->__nextchar);
600 option_index = indfound;
604 /* Don't test has_arg with >, because some C compilers don't
605 allow it to be used on enums. */
607 d->optarg = nameend + 1;
612 #if defined _LIBC && defined USE_IN_LIBIO
617 if (argv[d->optind - 1][1] == '-')
620 #if defined _LIBC && defined USE_IN_LIBIO
621 n = __asprintf (&buf, _("\
622 %s: option `--%s' doesn't allow an argument\n"),
623 argv[0], pfound->name);
625 fprintf (stderr, _("\
626 %s: option `--%s' doesn't allow an argument\n"),
627 argv[0], pfound->name);
632 /* +option or -option */
633 #if defined _LIBC && defined USE_IN_LIBIO
634 n = __asprintf (&buf, _("\
635 %s: option `%c%s' doesn't allow an argument\n"),
636 argv[0], argv[d->optind - 1][0],
639 fprintf (stderr, _("\
640 %s: option `%c%s' doesn't allow an argument\n"),
641 argv[0], argv[d->optind - 1][0],
646 #if defined _LIBC && defined USE_IN_LIBIO
649 _IO_flockfile (stderr);
651 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
652 ((_IO_FILE *) stderr)->_flags2
653 |= _IO_FLAGS2_NOTCANCEL;
655 __fxprintf (NULL, "%s", buf);
657 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
658 _IO_funlockfile (stderr);
665 d->__nextchar += strlen (d->__nextchar);
667 d->optopt = pfound->val;
671 else if (pfound->has_arg == 1)
673 if (d->optind < argc)
674 d->optarg = argv[d->optind++];
679 #if defined _LIBC && defined USE_IN_LIBIO
682 if (__asprintf (&buf, _("\
683 %s: option `%s' requires an argument\n"),
684 argv[0], argv[d->optind - 1]) >= 0)
686 _IO_flockfile (stderr);
688 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
689 ((_IO_FILE *) stderr)->_flags2
690 |= _IO_FLAGS2_NOTCANCEL;
692 __fxprintf (NULL, "%s", buf);
694 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
695 _IO_funlockfile (stderr);
701 _("%s: option `%s' requires an argument\n"),
702 argv[0], argv[d->optind - 1]);
705 d->__nextchar += strlen (d->__nextchar);
706 d->optopt = pfound->val;
707 return optstring[0] == ':' ? ':' : '?';
710 d->__nextchar += strlen (d->__nextchar);
712 *longind = option_index;
715 *(pfound->flag) = pfound->val;
721 /* Can't find it as a long option. If this is not getopt_long_only,
722 or the option starts with '--' or is not a valid short
723 option, then it's an error.
724 Otherwise interpret it as a short option. */
725 if (!long_only || argv[d->optind][1] == '-'
726 || strchr (optstring, *d->__nextchar) == NULL)
730 #if defined _LIBC && defined USE_IN_LIBIO
735 if (argv[d->optind][1] == '-')
738 #if defined _LIBC && defined USE_IN_LIBIO
739 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
740 argv[0], d->__nextchar);
742 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
743 argv[0], d->__nextchar);
748 /* +option or -option */
749 #if defined _LIBC && defined USE_IN_LIBIO
750 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
751 argv[0], argv[d->optind][0], d->__nextchar);
753 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
754 argv[0], argv[d->optind][0], d->__nextchar);
758 #if defined _LIBC && defined USE_IN_LIBIO
761 _IO_flockfile (stderr);
763 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
764 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
766 __fxprintf (NULL, "%s", buf);
768 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
769 _IO_funlockfile (stderr);
775 d->__nextchar = (char *) "";
782 /* Look at and handle the next short option-character. */
785 char c = *d->__nextchar++;
786 char *temp = strchr (optstring, c);
788 /* Increment `optind' when we start to process its last character. */
789 if (*d->__nextchar == '\0')
792 if (temp == NULL || c == ':')
796 #if defined _LIBC && defined USE_IN_LIBIO
801 if (d->__posixly_correct)
803 /* 1003.2 specifies the format of this message. */
804 #if defined _LIBC && defined USE_IN_LIBIO
805 n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
808 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
813 #if defined _LIBC && defined USE_IN_LIBIO
814 n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
817 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
821 #if defined _LIBC && defined USE_IN_LIBIO
824 _IO_flockfile (stderr);
826 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
827 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
829 __fxprintf (NULL, "%s", buf);
831 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
832 _IO_funlockfile (stderr);
841 /* Convenience. Treat POSIX -W foo same as long option --foo */
842 if (temp[0] == 'W' && temp[1] == ';')
845 const struct option *p;
846 const struct option *pfound = NULL;
852 /* This is an option that requires an argument. */
853 if (*d->__nextchar != '\0')
855 d->optarg = d->__nextchar;
856 /* If we end this ARGV-element by taking the rest as an arg,
857 we must advance to the next element now. */
860 else if (d->optind == argc)
864 /* 1003.2 specifies the format of this message. */
865 #if defined _LIBC && defined USE_IN_LIBIO
868 if (__asprintf (&buf,
869 _("%s: option requires an argument -- %c\n"),
872 _IO_flockfile (stderr);
874 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
875 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
877 __fxprintf (NULL, "%s", buf);
879 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
880 _IO_funlockfile (stderr);
885 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
890 if (optstring[0] == ':')
897 /* We already incremented `d->optind' once;
898 increment it again when taking next ARGV-elt as argument. */
899 d->optarg = argv[d->optind++];
901 /* optarg is now the argument, see if it's in the
902 table of longopts. */
904 for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
908 /* Test all long options for either exact match
909 or abbreviated matches. */
910 for (p = longopts, option_index = 0; p->name; p++, option_index++)
911 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
913 if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name))
915 /* Exact match found. */
917 indfound = option_index;
921 else if (pfound == NULL)
923 /* First nonexact match found. */
925 indfound = option_index;
928 /* Second or later nonexact match found. */
935 #if defined _LIBC && defined USE_IN_LIBIO
938 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
939 argv[0], argv[d->optind]) >= 0)
941 _IO_flockfile (stderr);
943 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
944 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
946 __fxprintf (NULL, "%s", buf);
948 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
949 _IO_funlockfile (stderr);
954 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
955 argv[0], argv[d->optind]);
958 d->__nextchar += strlen (d->__nextchar);
964 option_index = indfound;
967 /* Don't test has_arg with >, because some C compilers don't
968 allow it to be used on enums. */
970 d->optarg = nameend + 1;
975 #if defined _LIBC && defined USE_IN_LIBIO
978 if (__asprintf (&buf, _("\
979 %s: option `-W %s' doesn't allow an argument\n"),
980 argv[0], pfound->name) >= 0)
982 _IO_flockfile (stderr);
984 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
985 ((_IO_FILE *) stderr)->_flags2
986 |= _IO_FLAGS2_NOTCANCEL;
988 __fxprintf (NULL, "%s", buf);
990 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
991 _IO_funlockfile (stderr);
996 fprintf (stderr, _("\
997 %s: option `-W %s' doesn't allow an argument\n"),
998 argv[0], pfound->name);
1002 d->__nextchar += strlen (d->__nextchar);
1006 else if (pfound->has_arg == 1)
1008 if (d->optind < argc)
1009 d->optarg = argv[d->optind++];
1014 #if defined _LIBC && defined USE_IN_LIBIO
1017 if (__asprintf (&buf, _("\
1018 %s: option `%s' requires an argument\n"),
1019 argv[0], argv[d->optind - 1]) >= 0)
1021 _IO_flockfile (stderr);
1023 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1024 ((_IO_FILE *) stderr)->_flags2
1025 |= _IO_FLAGS2_NOTCANCEL;
1027 __fxprintf (NULL, "%s", buf);
1029 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1030 _IO_funlockfile (stderr);
1036 _("%s: option `%s' requires an argument\n"),
1037 argv[0], argv[d->optind - 1]);
1040 d->__nextchar += strlen (d->__nextchar);
1041 return optstring[0] == ':' ? ':' : '?';
1044 d->__nextchar += strlen (d->__nextchar);
1045 if (longind != NULL)
1046 *longind = option_index;
1049 *(pfound->flag) = pfound->val;
1054 d->__nextchar = NULL;
1055 return 'W'; /* Let the application handle it. */
1061 /* This is an option that accepts an argument optionally. */
1062 if (*d->__nextchar != '\0')
1064 d->optarg = d->__nextchar;
1069 d->__nextchar = NULL;
1073 /* This is an option that requires an argument. */
1074 if (*d->__nextchar != '\0')
1076 d->optarg = d->__nextchar;
1077 /* If we end this ARGV-element by taking the rest as an arg,
1078 we must advance to the next element now. */
1081 else if (d->optind == argc)
1085 /* 1003.2 specifies the format of this message. */
1086 #if defined _LIBC && defined USE_IN_LIBIO
1089 if (__asprintf (&buf, _("\
1090 %s: option requires an argument -- %c\n"),
1093 _IO_flockfile (stderr);
1095 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1096 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1098 __fxprintf (NULL, "%s", buf);
1100 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1101 _IO_funlockfile (stderr);
1107 _("%s: option requires an argument -- %c\n"),
1112 if (optstring[0] == ':')
1118 /* We already incremented `optind' once;
1119 increment it again when taking next ARGV-elt as argument. */
1120 d->optarg = argv[d->optind++];
1121 d->__nextchar = NULL;
1129 _getopt_internal (int argc, char *const *argv, const char *optstring,
1130 const struct option *longopts, int *longind, int long_only)
1134 getopt_data.optind = optind;
1135 getopt_data.opterr = opterr;
1137 result = _getopt_internal_r (argc, argv, optstring, longopts,
1138 longind, long_only, &getopt_data);
1140 optind = getopt_data.optind;
1141 optarg = getopt_data.optarg;
1142 optopt = getopt_data.optopt;
1148 getopt (int argc, char *const *argv, const char *optstring)
1150 return _getopt_internal (argc, argv, optstring,
1151 (const struct option *) 0,
1156 #endif /* Not ELIDE_CODE. */
1160 /* Compile with -DTEST to make an executable for use in testing
1161 the above definition of `getopt'. */
1164 main (int argc, char **argv)
1167 int digit_optind = 0;
1171 int this_option_optind = optind ? optind : 1;
1173 c = getopt (argc, argv, "abc:d:0123456789");
1189 if (digit_optind != 0 && digit_optind != this_option_optind)
1190 printf ("digits occur in two different argv-elements.\n");
1191 digit_optind = this_option_optind;
1192 printf ("option %c\n", c);
1196 printf ("option a\n");
1200 printf ("option b\n");
1204 printf ("option c with value `%s'\n", optarg);
1211 printf ("?? getopt returned character code 0%o ??\n", c);
1217 printf ("non-option ARGV-elements: ");
1218 while (optind < argc)
1219 printf ("%s ", argv[optind++]);