2 NOTE: getopt is 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) 1987-1996,1998-2004,2008,2009,2010,2011
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, int posixly_correct)
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 = 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, int posixly_correct)
397 int print_errors = d->opterr;
404 if (d->optind == 0 || !d->__initialized)
407 d->optind = 1; /* Don't scan ARGV[0], the program name. */
408 optstring = _getopt_initialize (argc, argv, optstring, d,
410 d->__initialized = 1;
412 else if (optstring[0] == '-' || optstring[0] == '+')
414 if (optstring[0] == ':')
417 /* Test whether ARGV[optind] points to a non-option argument.
418 Either it does not have option syntax, or there is an environment flag
419 from the shell indicating it is not an option. The later information
420 is only used when the used in the GNU libc. */
421 #if defined _LIBC && defined USE_NONOPTION_FLAGS
422 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \
423 || (d->optind < d->__nonoption_flags_len \
424 && __getopt_nonoption_flags[d->optind] == '1'))
426 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0')
429 if (d->__nextchar == NULL || *d->__nextchar == '\0')
431 /* Advance to the next ARGV-element. */
433 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
434 moved back by the user (who may also have changed the arguments). */
435 if (d->__last_nonopt > d->optind)
436 d->__last_nonopt = d->optind;
437 if (d->__first_nonopt > d->optind)
438 d->__first_nonopt = d->optind;
440 if (d->__ordering == PERMUTE)
442 /* If we have just processed some options following some non-options,
443 exchange them so that the options come first. */
445 if (d->__first_nonopt != d->__last_nonopt
446 && d->__last_nonopt != d->optind)
447 exchange ((char **) argv, d);
448 else if (d->__last_nonopt != d->optind)
449 d->__first_nonopt = d->optind;
451 /* Skip any additional non-options
452 and extend the range of non-options previously skipped. */
454 while (d->optind < argc && NONOPTION_P)
456 d->__last_nonopt = d->optind;
459 /* The special ARGV-element `--' means premature end of options.
460 Skip it like a null option,
461 then exchange with previous non-options as if it were an option,
462 then skip everything else like a non-option. */
464 if (d->optind != argc && !strcmp (argv[d->optind], "--"))
468 if (d->__first_nonopt != d->__last_nonopt
469 && d->__last_nonopt != d->optind)
470 exchange ((char **) argv, d);
471 else if (d->__first_nonopt == d->__last_nonopt)
472 d->__first_nonopt = d->optind;
473 d->__last_nonopt = argc;
478 /* If we have done all the ARGV-elements, stop the scan
479 and back over any non-options that we skipped and permuted. */
481 if (d->optind == argc)
483 /* Set the next-arg-index to point at the non-options
484 that we previously skipped, so the caller will digest them. */
485 if (d->__first_nonopt != d->__last_nonopt)
486 d->optind = d->__first_nonopt;
490 /* If we have come to a non-option and did not permute it,
491 either stop the scan or describe it to the caller and pass it by. */
495 if (d->__ordering == REQUIRE_ORDER)
497 d->optarg = argv[d->optind++];
501 /* We have found another option-ARGV-element.
502 Skip the initial punctuation. */
504 d->__nextchar = (argv[d->optind] + 1
505 + (longopts != NULL && argv[d->optind][1] == '-'));
508 /* Decode the current option-ARGV-element. */
510 /* Check whether the ARGV-element is a long option.
512 If long_only and the ARGV-element has the form "-f", where f is
513 a valid short option, don't consider it an abbreviated form of
514 a long option that starts with f. Otherwise there would be no
515 way to give the -f short option.
517 On the other hand, if there's a long option "fubar" and
518 the ARGV-element is "-fu", do consider that an abbreviation of
519 the long option, just like "--fu", and not "-f" with arg "u".
521 This distinction seems to be the most useful approach. */
524 && (argv[d->optind][1] == '-'
525 || (long_only && (argv[d->optind][2]
526 || !strchr (optstring, argv[d->optind][1])))))
529 unsigned int namelen;
530 const struct option *p;
531 const struct option *pfound = NULL;
534 const struct option *p;
535 struct option_list *next;
536 } *ambig_list = NULL;
541 for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++)
543 namelen = nameend - d->__nextchar;
545 /* Test all long options for either exact match
546 or abbreviated matches. */
547 for (p = longopts, option_index = 0; p->name; p++, option_index++)
548 if (!strncmp (p->name, d->__nextchar, namelen))
550 if (namelen == (unsigned int) strlen (p->name))
552 /* Exact match found. */
554 indfound = option_index;
558 else if (pfound == NULL)
560 /* First nonexact match found. */
562 indfound = option_index;
565 || pfound->has_arg != p->has_arg
566 || pfound->flag != p->flag
567 || pfound->val != p->val)
569 /* Second or later nonexact match found. */
570 struct option_list *newp = alloca (sizeof (*newp));
572 newp->next = ambig_list;
577 if (ambig_list != NULL && !exact)
581 struct option_list first;
583 first.next = ambig_list;
586 #if defined _LIBC && defined USE_IN_LIBIO
590 FILE *fp = open_memstream (&buf, &buflen);
594 _("%s: option '%s' is ambiguous; possibilities:"),
595 argv[0], argv[d->optind]);
599 fprintf (fp, " '--%s'", ambig_list->p->name);
600 ambig_list = ambig_list->next;
602 while (ambig_list != NULL);
604 fputc_unlocked ('\n', fp);
606 if (__builtin_expect (fclose (fp) != EOF, 1))
608 _IO_flockfile (stderr);
610 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
611 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
613 __fxprintf (NULL, "%s", buf);
615 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
616 _IO_funlockfile (stderr);
623 _("%s: option '%s' is ambiguous; possibilities:"),
624 argv[0], argv[d->optind]);
627 fprintf (stderr, " '--%s'", ambig_list->p->name);
628 ambig_list = ambig_list->next;
630 while (ambig_list != NULL);
632 fputc ('\n', stderr);
635 d->__nextchar += strlen (d->__nextchar);
643 option_index = indfound;
647 /* Don't test has_arg with >, because some C compilers don't
648 allow it to be used on enums. */
650 d->optarg = nameend + 1;
655 #if defined _LIBC && defined USE_IN_LIBIO
660 if (argv[d->optind - 1][1] == '-')
663 #if defined _LIBC && defined USE_IN_LIBIO
664 n = __asprintf (&buf, _("\
665 %s: option '--%s' doesn't allow an argument\n"),
666 argv[0], pfound->name);
668 fprintf (stderr, _("\
669 %s: option '--%s' doesn't allow an argument\n"),
670 argv[0], pfound->name);
675 /* +option or -option */
676 #if defined _LIBC && defined USE_IN_LIBIO
677 n = __asprintf (&buf, _("\
678 %s: option '%c%s' doesn't allow an argument\n"),
679 argv[0], argv[d->optind - 1][0],
682 fprintf (stderr, _("\
683 %s: option '%c%s' doesn't allow an argument\n"),
684 argv[0], argv[d->optind - 1][0],
689 #if defined _LIBC && defined USE_IN_LIBIO
692 _IO_flockfile (stderr);
694 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
695 ((_IO_FILE *) stderr)->_flags2
696 |= _IO_FLAGS2_NOTCANCEL;
698 __fxprintf (NULL, "%s", buf);
700 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
701 _IO_funlockfile (stderr);
708 d->__nextchar += strlen (d->__nextchar);
710 d->optopt = pfound->val;
714 else if (pfound->has_arg == 1)
716 if (d->optind < argc)
717 d->optarg = argv[d->optind++];
722 #if defined _LIBC && defined USE_IN_LIBIO
725 if (__asprintf (&buf, _("\
726 %s: option '--%s' requires an argument\n"),
727 argv[0], pfound->name) >= 0)
729 _IO_flockfile (stderr);
731 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
732 ((_IO_FILE *) stderr)->_flags2
733 |= _IO_FLAGS2_NOTCANCEL;
735 __fxprintf (NULL, "%s", buf);
737 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
738 _IO_funlockfile (stderr);
744 _("%s: option '--%s' requires an argument\n"),
745 argv[0], pfound->name);
748 d->__nextchar += strlen (d->__nextchar);
749 d->optopt = pfound->val;
750 return optstring[0] == ':' ? ':' : '?';
753 d->__nextchar += strlen (d->__nextchar);
755 *longind = option_index;
758 *(pfound->flag) = pfound->val;
764 /* Can't find it as a long option. If this is not getopt_long_only,
765 or the option starts with '--' or is not a valid short
766 option, then it's an error.
767 Otherwise interpret it as a short option. */
768 if (!long_only || argv[d->optind][1] == '-'
769 || strchr (optstring, *d->__nextchar) == NULL)
773 #if defined _LIBC && defined USE_IN_LIBIO
778 if (argv[d->optind][1] == '-')
781 #if defined _LIBC && defined USE_IN_LIBIO
782 n = __asprintf (&buf, _("%s: unrecognized option '--%s'\n"),
783 argv[0], d->__nextchar);
785 fprintf (stderr, _("%s: unrecognized option '--%s'\n"),
786 argv[0], d->__nextchar);
791 /* +option or -option */
792 #if defined _LIBC && defined USE_IN_LIBIO
793 n = __asprintf (&buf, _("%s: unrecognized option '%c%s'\n"),
794 argv[0], argv[d->optind][0], d->__nextchar);
796 fprintf (stderr, _("%s: unrecognized option '%c%s'\n"),
797 argv[0], argv[d->optind][0], d->__nextchar);
801 #if defined _LIBC && defined USE_IN_LIBIO
804 _IO_flockfile (stderr);
806 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
807 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
809 __fxprintf (NULL, "%s", buf);
811 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
812 _IO_funlockfile (stderr);
818 d->__nextchar = (char *) "";
825 /* Look at and handle the next short option-character. */
828 char c = *d->__nextchar++;
829 char *temp = strchr (optstring, c);
831 /* Increment `optind' when we start to process its last character. */
832 if (*d->__nextchar == '\0')
835 if (temp == NULL || c == ':' || c == ';')
839 #if defined _LIBC && defined USE_IN_LIBIO
844 #if defined _LIBC && defined USE_IN_LIBIO
845 n = __asprintf (&buf, _("%s: invalid option -- '%c'\n"),
848 fprintf (stderr, _("%s: invalid option -- '%c'\n"), argv[0], c);
851 #if defined _LIBC && defined USE_IN_LIBIO
854 _IO_flockfile (stderr);
856 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
857 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
859 __fxprintf (NULL, "%s", buf);
861 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
862 _IO_funlockfile (stderr);
871 /* Convenience. Treat POSIX -W foo same as long option --foo */
872 if (temp[0] == 'W' && temp[1] == ';')
875 const struct option *p;
876 const struct option *pfound = NULL;
882 /* This is an option that requires an argument. */
883 if (*d->__nextchar != '\0')
885 d->optarg = d->__nextchar;
886 /* If we end this ARGV-element by taking the rest as an arg,
887 we must advance to the next element now. */
890 else if (d->optind == argc)
894 #if defined _LIBC && defined USE_IN_LIBIO
897 if (__asprintf (&buf,
898 _("%s: option requires an argument -- '%c'\n"),
901 _IO_flockfile (stderr);
903 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
904 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
906 __fxprintf (NULL, "%s", buf);
908 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
909 _IO_funlockfile (stderr);
915 _("%s: option requires an argument -- '%c'\n"),
920 if (optstring[0] == ':')
927 /* We already incremented `d->optind' once;
928 increment it again when taking next ARGV-elt as argument. */
929 d->optarg = argv[d->optind++];
931 /* optarg is now the argument, see if it's in the
932 table of longopts. */
934 for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '=';
938 /* Test all long options for either exact match
939 or abbreviated matches. */
940 for (p = longopts, option_index = 0; p->name; p++, option_index++)
941 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar))
943 if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name))
945 /* Exact match found. */
947 indfound = option_index;
951 else if (pfound == NULL)
953 /* First nonexact match found. */
955 indfound = option_index;
958 || pfound->has_arg != p->has_arg
959 || pfound->flag != p->flag
960 || pfound->val != p->val)
961 /* Second or later nonexact match found. */
968 #if defined _LIBC && defined USE_IN_LIBIO
971 if (__asprintf (&buf, _("%s: option '-W %s' is ambiguous\n"),
972 argv[0], d->optarg) >= 0)
974 _IO_flockfile (stderr);
976 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
977 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
979 __fxprintf (NULL, "%s", buf);
981 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
982 _IO_funlockfile (stderr);
987 fprintf (stderr, _("%s: option '-W %s' is ambiguous\n"),
991 d->__nextchar += strlen (d->__nextchar);
997 option_index = indfound;
1000 /* Don't test has_arg with >, because some C compilers don't
1001 allow it to be used on enums. */
1002 if (pfound->has_arg)
1003 d->optarg = nameend + 1;
1008 #if defined _LIBC && defined USE_IN_LIBIO
1011 if (__asprintf (&buf, _("\
1012 %s: option '-W %s' doesn't allow an argument\n"),
1013 argv[0], pfound->name) >= 0)
1015 _IO_flockfile (stderr);
1017 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1018 ((_IO_FILE *) stderr)->_flags2
1019 |= _IO_FLAGS2_NOTCANCEL;
1021 __fxprintf (NULL, "%s", buf);
1023 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1024 _IO_funlockfile (stderr);
1029 fprintf (stderr, _("\
1030 %s: option '-W %s' doesn't allow an argument\n"),
1031 argv[0], pfound->name);
1035 d->__nextchar += strlen (d->__nextchar);
1039 else if (pfound->has_arg == 1)
1041 if (d->optind < argc)
1042 d->optarg = argv[d->optind++];
1047 #if defined _LIBC && defined USE_IN_LIBIO
1050 if (__asprintf (&buf, _("\
1051 %s: option '-W %s' requires an argument\n"),
1052 argv[0], pfound->name) >= 0)
1054 _IO_flockfile (stderr);
1056 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1057 ((_IO_FILE *) stderr)->_flags2
1058 |= _IO_FLAGS2_NOTCANCEL;
1060 __fxprintf (NULL, "%s", buf);
1062 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1063 _IO_funlockfile (stderr);
1068 fprintf (stderr, _("\
1069 %s: option '-W %s' requires an argument\n"),
1070 argv[0], pfound->name);
1073 d->__nextchar += strlen (d->__nextchar);
1074 return optstring[0] == ':' ? ':' : '?';
1079 d->__nextchar += strlen (d->__nextchar);
1080 if (longind != NULL)
1081 *longind = option_index;
1084 *(pfound->flag) = pfound->val;
1089 d->__nextchar = NULL;
1090 return 'W'; /* Let the application handle it. */
1096 /* This is an option that accepts an argument optionally. */
1097 if (*d->__nextchar != '\0')
1099 d->optarg = d->__nextchar;
1104 d->__nextchar = NULL;
1108 /* This is an option that requires an argument. */
1109 if (*d->__nextchar != '\0')
1111 d->optarg = d->__nextchar;
1112 /* If we end this ARGV-element by taking the rest as an arg,
1113 we must advance to the next element now. */
1116 else if (d->optind == argc)
1120 #if defined _LIBC && defined USE_IN_LIBIO
1123 if (__asprintf (&buf, _("\
1124 %s: option requires an argument -- '%c'\n"),
1127 _IO_flockfile (stderr);
1129 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1130 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1132 __fxprintf (NULL, "%s", buf);
1134 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1135 _IO_funlockfile (stderr);
1141 _("%s: option requires an argument -- '%c'\n"),
1146 if (optstring[0] == ':')
1152 /* We already incremented `optind' once;
1153 increment it again when taking next ARGV-elt as argument. */
1154 d->optarg = argv[d->optind++];
1155 d->__nextchar = NULL;
1163 _getopt_internal (int argc, char *const *argv, const char *optstring,
1164 const struct option *longopts, int *longind, int long_only,
1165 int posixly_correct)
1169 getopt_data.optind = optind;
1170 getopt_data.opterr = opterr;
1172 result = _getopt_internal_r (argc, argv, optstring, longopts,
1173 longind, long_only, &getopt_data,
1176 optind = getopt_data.optind;
1177 optarg = getopt_data.optarg;
1178 optopt = getopt_data.optopt;
1184 getopt (int argc, char *const *argv, const char *optstring)
1186 return _getopt_internal (argc, argv, optstring,
1187 (const struct option *) 0,
1194 __posix_getopt (int argc, char *const *argv, const char *optstring)
1196 return _getopt_internal (argc, argv, optstring,
1197 (const struct option *) 0,
1203 #endif /* Not ELIDE_CODE. */
1207 /* Compile with -DTEST to make an executable for use in testing
1208 the above definition of `getopt'. */
1211 main (int argc, char **argv)
1214 int digit_optind = 0;
1218 int this_option_optind = optind ? optind : 1;
1220 c = getopt (argc, argv, "abc:d:0123456789");
1236 if (digit_optind != 0 && digit_optind != this_option_optind)
1237 printf ("digits occur in two different argv-elements.\n");
1238 digit_optind = this_option_optind;
1239 printf ("option %c\n", c);
1243 printf ("option a\n");
1247 printf ("option b\n");
1251 printf ("option c with value '%s'\n", optarg);
1258 printf ("?? getopt returned character code 0%o ??\n", c);
1264 printf ("non-option ARGV-elements: ");
1265 while (optind < argc)
1266 printf ("%s ", argv[optind++]);