3 I cannot get the vanilla getopt code to work (i.e. compile only what
4 is needed and not duplicate symbols found in the standard library)
5 on all the platforms that FLAC supports. In particular the gating
6 of code with the ELIDE_CODE #define is not accurate enough on systems
7 that are POSIX but not glibc. If someone has a patch that works on
8 GNU/Linux, Darwin, AND Solaris please submit it on the project page:
9 http://sourceforge.net/projects/flac
11 In the meantime I have munged the global symbols and remove gates
12 around code, while at the same time trying to touch the original as
16 NOTE: getopt is now part of the C library, so if you don't know what
17 "Keep this file name-space clean" means, talk to drepper@gnu.org
20 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99
21 Free Software Foundation, Inc.
23 The GNU C Library is free software; you can redistribute it and/or
24 modify it under the terms of the GNU Library General Public License as
25 published by the Free Software Foundation; either version 2 of the
26 License, or (at your option) any later version.
28 The GNU C Library is distributed in the hope that it will be useful,
29 but WITHOUT ANY WARRANTY; without even the implied warranty of
30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
31 Library General Public License for more details.
33 You should have received a copy of the GNU Library General Public
34 License along with the GNU C Library; see the file COPYING.LIB. If not,
35 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
36 Boston, MA 02111-1307, USA. */
38 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
39 Ditto for AIX 3.2 and <stdlib.h>. */
48 #if !defined __STDC__ || !__STDC__
49 /* This is a separate conditional since some stdc systems
50 reject `defined (const)'. */
58 /* Comment out all this code if we are using the GNU C Library, and are not
59 actually compiling the library itself. This code is part of the GNU C
60 Library, but also included in many other GNU distributions. Compiling
61 and linking in this code is a waste when using the GNU C library
62 (especially if it is a shared library). Rather than having every GNU
63 program understand `configure --with-gnu-libc' and omit the object files,
64 it is simpler to just do this in the source for each such file. */
66 #define GETOPT_INTERFACE_VERSION 2
67 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
68 # include <gnu-versions.h>
69 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
75 /*[JEC] was:#ifndef ELIDE_CODE*/
78 /* This needs to come after some library #include
79 to get __GNU_LIBRARY__ defined. */
80 #ifdef __GNU_LIBRARY__
81 /* Don't include stdlib.h for non-GNU C libraries because some of them
82 contain conflicting prototypes for getopt. */
85 #endif /* GNU C library. */
89 # if HAVE_STRING_H - 0
95 /* This is for other GNU distributions with internationalized messages.
96 When compiling libc, the _ macro is predefined. */
97 # ifdef HAVE_LIBINTL_H
99 # define _(msgid) gettext (msgid)
101 # define _(msgid) (msgid)
105 /* This version of `FLAC__share__getopt' appears to the caller like standard Unix `getopt'
106 but it behaves differently for the user, since it allows the user
107 to intersperse the options with the other arguments.
109 As `FLAC__share__getopt' works, it permutes the elements of ARGV so that,
110 when it is done, all the options precede everything else. Thus
111 all application programs are extended to handle flexible argument order.
113 Setting the environment variable POSIXLY_CORRECT disables permutation.
114 Then the behavior is completely standard.
116 GNU application programs can use a third alternative mode in which
117 they can distinguish the relative order of options and other arguments. */
119 #include "share/getopt.h"
120 /*[JEC] was:#include "getopt.h"*/
122 /* For communication from `FLAC__share__getopt' to the caller.
123 When `FLAC__share__getopt' finds an option that takes an argument,
124 the argument value is returned here.
125 Also, when `ordering' is RETURN_IN_ORDER,
126 each non-option ARGV-element is returned here. */
128 GETOPT_API char *FLAC__share__optarg;
130 /* Index in ARGV of the next element to be scanned.
131 This is used for communication to and from the caller
132 and for communication between successive calls to `FLAC__share__getopt'.
134 On entry to `FLAC__share__getopt', zero means this is the first call; initialize.
136 When `FLAC__share__getopt' returns -1, this is the index of the first of the
137 non-option elements that the caller should itself scan.
139 Otherwise, `FLAC__share__optind' communicates from one call to the next
140 how much of ARGV has been scanned so far. */
142 /* 1003.2 says this must be 1 before any call. */
143 GETOPT_API int FLAC__share__optind = 1;
145 /* Formerly, initialization of getopt depended on FLAC__share__optind==0, which
146 causes problems with re-calling getopt as programs generally don't
149 int FLAC__share____getopt_initialized;
151 /* The next char to be scanned in the option-element
152 in which the last option character we returned was found.
153 This allows us to pick up the scan where we left off.
155 If this is zero, or a null string, it means resume the scan
156 by advancing to the next ARGV-element. */
158 static char *nextchar;
160 /* Callers store zero here to inhibit the error message
161 for unrecognized options. */
163 GETOPT_API int FLAC__share__opterr = 1;
165 /* Set to an option character which was unrecognized.
166 This must be initialized on some systems to avoid linking in the
167 system's own getopt implementation. */
169 GETOPT_API int FLAC__share__optopt = '?';
171 /* Describe how to deal with options that follow non-option ARGV-elements.
173 If the caller did not specify anything,
174 the default is REQUIRE_ORDER if the environment variable
175 POSIXLY_CORRECT is defined, PERMUTE otherwise.
177 REQUIRE_ORDER means don't recognize them as options;
178 stop option processing when the first non-option is seen.
179 This is what Unix does.
180 This mode of operation is selected by either setting the environment
181 variable POSIXLY_CORRECT, or using `+' as the first character
182 of the list of option characters.
184 PERMUTE is the default. We permute the contents of ARGV as we scan,
185 so that eventually all the non-options are at the end. This allows options
186 to be given in any order, even with programs that were not written to
189 RETURN_IN_ORDER is an option available to programs that were written
190 to expect options and other ARGV-elements in any order and that care about
191 the ordering of the two. We describe each non-option ARGV-element
192 as if it were the argument of an option with character code 1.
193 Using `-' as the first character of the list of option characters
194 selects this mode of operation.
196 The special argument `--' forces an end of option-scanning regardless
197 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
198 `--' can cause `FLAC__share__getopt' to return -1 with `FLAC__share__optind' != ARGC. */
202 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
205 /* Value of POSIXLY_CORRECT environment variable. */
206 static char *posixly_correct;
208 #ifdef __GNU_LIBRARY__
209 /* We want to avoid inclusion of string.h with non-GNU libraries
210 because there are many ways it can cause trouble.
211 On some systems, it contains special magic macros that don't work
214 # define my_index strchr
219 /* Avoid depending on library functions or files
220 whose names are inconsistent. */
223 extern char *getenv ();
240 /* If using GCC, we can safely declare strlen this way.
241 If not using GCC, it is ok not to declare it. */
243 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
244 That was relevant to code that was here before. */
245 # if (!defined __STDC__ || !__STDC__) && !defined strlen
246 /* gcc with -traditional declares the built-in strlen to return int,
247 and has done so at least since version 2.4.5. -- rms. */
248 extern int strlen (const char *);
249 # endif /* not __STDC__ */
250 #endif /* __GNUC__ */
252 #endif /* not __GNU_LIBRARY__ */
254 /* Handle permutation of arguments. */
256 /* Describe the part of ARGV that contains non-options that have
257 been skipped. `first_nonopt' is the index in ARGV of the first of them;
258 `last_nonopt' is the index after the last of them. */
260 static int first_nonopt;
261 static int last_nonopt;
264 /* Bash 2.0 gives us an environment variable containing flags
265 indicating ARGV elements that should not be considered arguments. */
267 /* Defined in getopt_init.c */
268 extern char *__getopt_nonoption_flags;
270 static int nonoption_flags_max_len;
271 static int nonoption_flags_len;
273 static int original_argc;
274 static char *const *original_argv;
276 /* Make sure the environment variable bash 2.0 puts in the environment
277 is valid for the getopt call we must make sure that the ARGV passed
278 to getopt is that one passed to the process. */
280 __attribute__ ((unused))
281 store_args_and_env (int argc, char *const *argv)
283 /* XXX This is no good solution. We should rather copy the args so
284 that we can compare them later. But we must not use malloc(3). */
285 original_argc = argc;
286 original_argv = argv;
288 # ifdef text_set_element
289 text_set_element (__libc_subinit, store_args_and_env);
290 # endif /* text_set_element */
292 # define SWAP_FLAGS(ch1, ch2) \
293 if (nonoption_flags_len > 0) \
295 char __tmp = __getopt_nonoption_flags[ch1]; \
296 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
297 __getopt_nonoption_flags[ch2] = __tmp; \
300 # define SWAP_FLAGS(ch1, ch2)
303 /* Exchange two adjacent subsequences of ARGV.
304 One subsequence is elements [first_nonopt,last_nonopt)
305 which contains all the non-options that have been skipped so far.
306 The other is elements [last_nonopt,FLAC__share__optind), which contains all
307 the options processed since those non-options were skipped.
309 `first_nonopt' and `last_nonopt' are relocated so that they describe
310 the new indices of the non-options in ARGV after they are moved. */
312 #if defined __STDC__ && __STDC__
313 static void exchange (char **);
320 int bottom = first_nonopt;
321 int middle = last_nonopt;
322 int top = FLAC__share__optind;
325 /* Exchange the shorter segment with the far end of the longer segment.
326 That puts the shorter segment into the right place.
327 It leaves the longer segment in the right place overall,
328 but it consists of two parts that need to be swapped next. */
331 /* First make sure the handling of the `__getopt_nonoption_flags'
332 string can work normally. Our top argument must be in the range
334 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
336 /* We must extend the array. The user plays games with us and
337 presents new arguments. */
338 char *new_str = malloc (top + 1);
340 nonoption_flags_len = nonoption_flags_max_len = 0;
343 memset (__mempcpy (new_str, __getopt_nonoption_flags,
344 nonoption_flags_max_len),
345 '\0', top + 1 - nonoption_flags_max_len);
346 nonoption_flags_max_len = top + 1;
347 __getopt_nonoption_flags = new_str;
352 while (top > middle && middle > bottom)
354 if (top - middle > middle - bottom)
356 /* Bottom segment is the short one. */
357 int len = middle - bottom;
360 /* Swap it with the top part of the top segment. */
361 for (i = 0; i < len; i++)
363 tem = argv[bottom + i];
364 argv[bottom + i] = argv[top - (middle - bottom) + i];
365 argv[top - (middle - bottom) + i] = tem;
366 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
368 /* Exclude the moved bottom segment from further swapping. */
373 /* Top segment is the short one. */
374 int len = top - middle;
377 /* Swap it with the bottom part of the bottom segment. */
378 for (i = 0; i < len; i++)
380 tem = argv[bottom + i];
381 argv[bottom + i] = argv[middle + i];
382 argv[middle + i] = tem;
383 SWAP_FLAGS (bottom + i, middle + i);
385 /* Exclude the moved top segment from further swapping. */
390 /* Update records for the slots the non-options now occupy. */
392 first_nonopt += (FLAC__share__optind - last_nonopt);
393 last_nonopt = FLAC__share__optind;
396 /* Initialize the internal data when the first call is made. */
398 #if defined __STDC__ && __STDC__
399 static const char *FLAC__share___getopt_initialize (int, char *const *, const char *);
402 FLAC__share___getopt_initialize (argc, argv, optstring)
405 const char *optstring;
407 /* Start processing options with ARGV-element 1 (since ARGV-element 0
408 is the program name); the sequence of previously skipped
409 non-option ARGV-elements is empty. */
411 first_nonopt = last_nonopt = FLAC__share__optind;
415 posixly_correct = getenv ("POSIXLY_CORRECT");
417 /* Determine how to handle the ordering of options and nonoptions. */
419 if (optstring[0] == '-')
421 ordering = RETURN_IN_ORDER;
424 else if (optstring[0] == '+')
426 ordering = REQUIRE_ORDER;
429 else if (posixly_correct != NULL)
430 ordering = REQUIRE_ORDER;
435 if (posixly_correct == NULL
436 && argc == original_argc && argv == original_argv)
438 if (nonoption_flags_max_len == 0)
440 if (__getopt_nonoption_flags == NULL
441 || __getopt_nonoption_flags[0] == '\0')
442 nonoption_flags_max_len = -1;
445 const char *orig_str = __getopt_nonoption_flags;
446 int len = nonoption_flags_max_len = strlen (orig_str);
447 if (nonoption_flags_max_len < argc)
448 nonoption_flags_max_len = argc;
449 __getopt_nonoption_flags =
450 (char *) malloc (nonoption_flags_max_len);
451 if (__getopt_nonoption_flags == NULL)
452 nonoption_flags_max_len = -1;
454 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
455 '\0', nonoption_flags_max_len - len);
458 nonoption_flags_len = nonoption_flags_max_len;
461 nonoption_flags_len = 0;
463 (void)argc, (void)argv;
469 /* Scan elements of ARGV (whose length is ARGC) for option characters
472 If an element of ARGV starts with '-', and is not exactly "-" or "--",
473 then it is an option element. The characters of this element
474 (aside from the initial '-') are option characters. If `FLAC__share__getopt'
475 is called repeatedly, it returns successively each of the option characters
476 from each of the option elements.
478 If `FLAC__share__getopt' finds another option character, it returns that character,
479 updating `FLAC__share__optind' and `nextchar' so that the next call to `FLAC__share__getopt' can
480 resume the scan with the following option character or ARGV-element.
482 If there are no more option characters, `FLAC__share__getopt' returns -1.
483 Then `FLAC__share__optind' is the index in ARGV of the first ARGV-element
484 that is not an option. (The ARGV-elements have been permuted
485 so that those that are not options now come last.)
487 OPTSTRING is a string containing the legitimate option characters.
488 If an option character is seen that is not listed in OPTSTRING,
489 return '?' after printing an error message. If you set `FLAC__share__opterr' to
490 zero, the error message is suppressed but we still return '?'.
492 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
493 so the following text in the same ARGV-element, or the text of the following
494 ARGV-element, is returned in `FLAC__share__optarg'. Two colons mean an option that
495 wants an optional arg; if there is text in the current ARGV-element,
496 it is returned in `FLAC__share__optarg', otherwise `FLAC__share__optarg' is set to zero.
498 If OPTSTRING starts with `-' or `+', it requests different methods of
499 handling the non-option ARGV-elements.
500 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
502 Long-named options begin with `--' instead of `-'.
503 Their names may be abbreviated as long as the abbreviation is unique
504 or is an exact match for some defined option. If they have an
505 argument, it follows the option name in the same ARGV-element, separated
506 from the option name by a `=', or else the in next ARGV-element.
507 When `FLAC__share__getopt' finds a long-named option, it returns 0 if that option's
508 `flag' field is nonzero, the value of the option's `val' field
509 if the `flag' field is zero.
511 The elements of ARGV aren't really const, because we permute them.
512 But we pretend they're const in the prototype to be compatible
515 LONGOPTS is a vector of `struct FLAC__share__option' terminated by an
516 element containing a name which is zero.
518 LONGIND returns the index in LONGOPT of the long-named option found.
519 It is only valid when a long-named option has been found by the most
522 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
523 long-named options. */
526 FLAC__share___getopt_internal (argc, argv, optstring, longopts, longind, long_only)
529 const char *optstring;
530 const struct FLAC__share__option *longopts;
534 FLAC__share__optarg = NULL;
536 if (FLAC__share__optind == 0 || !FLAC__share____getopt_initialized)
538 if (FLAC__share__optind == 0)
539 FLAC__share__optind = 1; /* Don't scan ARGV[0], the program name. */
540 optstring = FLAC__share___getopt_initialize (argc, argv, optstring);
541 FLAC__share____getopt_initialized = 1;
544 /* Test whether ARGV[FLAC__share__optind] points to a non-option argument.
545 Either it does not have option syntax, or there is an environment flag
546 from the shell indicating it is not an option. The later information
547 is only used when the used in the GNU libc. */
549 # define NONOPTION_P (argv[FLAC__share__optind][0] != '-' || argv[FLAC__share__optind][1] == '\0' \
550 || (FLAC__share__optind < nonoption_flags_len \
551 && __getopt_nonoption_flags[FLAC__share__optind] == '1'))
553 # define NONOPTION_P (argv[FLAC__share__optind][0] != '-' || argv[FLAC__share__optind][1] == '\0')
556 if (nextchar == NULL || *nextchar == '\0')
558 /* Advance to the next ARGV-element. */
560 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
561 moved back by the user (who may also have changed the arguments). */
562 if (last_nonopt > FLAC__share__optind)
563 last_nonopt = FLAC__share__optind;
564 if (first_nonopt > FLAC__share__optind)
565 first_nonopt = FLAC__share__optind;
567 if (ordering == PERMUTE)
569 /* If we have just processed some options following some non-options,
570 exchange them so that the options come first. */
572 if (first_nonopt != last_nonopt && last_nonopt != FLAC__share__optind)
573 exchange ((char **) argv);
574 else if (last_nonopt != FLAC__share__optind)
575 first_nonopt = FLAC__share__optind;
577 /* Skip any additional non-options
578 and extend the range of non-options previously skipped. */
580 while (FLAC__share__optind < argc && NONOPTION_P)
581 FLAC__share__optind++;
582 last_nonopt = FLAC__share__optind;
585 /* The special ARGV-element `--' means premature end of options.
586 Skip it like a null option,
587 then exchange with previous non-options as if it were an option,
588 then skip everything else like a non-option. */
590 if (FLAC__share__optind != argc && !strcmp (argv[FLAC__share__optind], "--"))
592 FLAC__share__optind++;
594 if (first_nonopt != last_nonopt && last_nonopt != FLAC__share__optind)
595 exchange ((char **) argv);
596 else if (first_nonopt == last_nonopt)
597 first_nonopt = FLAC__share__optind;
600 FLAC__share__optind = argc;
603 /* If we have done all the ARGV-elements, stop the scan
604 and back over any non-options that we skipped and permuted. */
606 if (FLAC__share__optind == argc)
608 /* Set the next-arg-index to point at the non-options
609 that we previously skipped, so the caller will digest them. */
610 if (first_nonopt != last_nonopt)
611 FLAC__share__optind = first_nonopt;
615 /* If we have come to a non-option and did not permute it,
616 either stop the scan or describe it to the caller and pass it by. */
620 if (ordering == REQUIRE_ORDER)
622 FLAC__share__optarg = argv[FLAC__share__optind++];
626 /* We have found another option-ARGV-element.
627 Skip the initial punctuation. */
629 nextchar = (argv[FLAC__share__optind] + 1
630 + (longopts != NULL && argv[FLAC__share__optind][1] == '-'));
633 /* Decode the current option-ARGV-element. */
635 /* Check whether the ARGV-element is a long option.
637 If long_only and the ARGV-element has the form "-f", where f is
638 a valid short option, don't consider it an abbreviated form of
639 a long option that starts with f. Otherwise there would be no
640 way to give the -f short option.
642 On the other hand, if there's a long option "fubar" and
643 the ARGV-element is "-fu", do consider that an abbreviation of
644 the long option, just like "--fu", and not "-f" with arg "u".
646 This distinction seems to be the most useful approach. */
649 && (argv[FLAC__share__optind][1] == '-'
650 || (long_only && (argv[FLAC__share__optind][2] || !my_index (optstring, argv[FLAC__share__optind][1])))))
653 const struct FLAC__share__option *p;
654 const struct FLAC__share__option *pfound = NULL;
660 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
663 /* Test all long options for either exact match
664 or abbreviated matches. */
665 for (p = longopts, option_index = 0; p->name; p++, option_index++)
666 if (!strncmp (p->name, nextchar, nameend - nextchar))
668 if ((unsigned int) (nameend - nextchar)
669 == (unsigned int) strlen (p->name))
671 /* Exact match found. */
673 indfound = option_index;
677 else if (pfound == NULL)
679 /* First nonexact match found. */
681 indfound = option_index;
684 /* Second or later nonexact match found. */
690 if (FLAC__share__opterr)
691 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
692 argv[0], argv[FLAC__share__optind]);
693 nextchar += strlen (nextchar);
694 FLAC__share__optind++;
695 FLAC__share__optopt = 0;
701 option_index = indfound;
702 FLAC__share__optind++;
705 /* Don't test has_arg with >, because some C compilers don't
706 allow it to be used on enums. */
708 FLAC__share__optarg = nameend + 1;
711 if (FLAC__share__opterr)
713 if (argv[FLAC__share__optind - 1][1] == '-')
716 _("%s: option `--%s' doesn't allow an argument\n"),
717 argv[0], pfound->name);
719 /* +option or -option */
721 _("%s: option `%c%s' doesn't allow an argument\n"),
722 argv[0], argv[FLAC__share__optind - 1][0], pfound->name);
725 nextchar += strlen (nextchar);
727 FLAC__share__optopt = pfound->val;
731 else if (pfound->has_arg == 1)
733 if (FLAC__share__optind < argc)
734 FLAC__share__optarg = argv[FLAC__share__optind++];
737 if (FLAC__share__opterr)
739 _("%s: option `%s' requires an argument\n"),
740 argv[0], argv[FLAC__share__optind - 1]);
741 nextchar += strlen (nextchar);
742 FLAC__share__optopt = pfound->val;
743 return optstring[0] == ':' ? ':' : '?';
746 nextchar += strlen (nextchar);
748 *longind = option_index;
751 *(pfound->flag) = pfound->val;
757 /* Can't find it as a long option. If this is not FLAC__share__getopt_long_only,
758 or the option starts with '--' or is not a valid short
759 option, then it's an error.
760 Otherwise interpret it as a short option. */
761 if (!long_only || argv[FLAC__share__optind][1] == '-'
762 || my_index (optstring, *nextchar) == NULL)
764 if (FLAC__share__opterr)
766 if (argv[FLAC__share__optind][1] == '-')
768 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
771 /* +option or -option */
772 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
773 argv[0], argv[FLAC__share__optind][0], nextchar);
775 nextchar = (char *) "";
776 FLAC__share__optind++;
777 FLAC__share__optopt = 0;
782 /* Look at and handle the next short option-character. */
785 char c = *nextchar++;
786 char *temp = my_index (optstring, c);
788 /* Increment `FLAC__share__optind' when we start to process its last character. */
789 if (*nextchar == '\0')
790 ++FLAC__share__optind;
792 if (temp == NULL || c == ':')
794 if (FLAC__share__opterr)
797 /* 1003.2 specifies the format of this message. */
798 fprintf (stderr, _("%s: illegal option -- %c\n"),
801 fprintf (stderr, _("%s: invalid option -- %c\n"),
804 FLAC__share__optopt = c;
807 /* Convenience. Treat POSIX -W foo same as long option --foo */
808 if (temp[0] == 'W' && temp[1] == ';')
811 const struct FLAC__share__option *p;
812 const struct FLAC__share__option *pfound = NULL;
818 /* This is an option that requires an argument. */
819 if (*nextchar != '\0')
821 FLAC__share__optarg = nextchar;
822 /* If we end this ARGV-element by taking the rest as an arg,
823 we must advance to the next element now. */
824 FLAC__share__optind++;
826 else if (FLAC__share__optind == argc)
828 if (FLAC__share__opterr)
830 /* 1003.2 specifies the format of this message. */
831 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
834 FLAC__share__optopt = c;
835 if (optstring[0] == ':')
842 /* We already incremented `FLAC__share__optind' once;
843 increment it again when taking next ARGV-elt as argument. */
844 FLAC__share__optarg = argv[FLAC__share__optind++];
846 /* FLAC__share__optarg is now the argument, see if it's in the
847 table of longopts. */
849 for (nextchar = nameend = FLAC__share__optarg; *nameend && *nameend != '='; nameend++)
852 /* Test all long options for either exact match
853 or abbreviated matches. */
854 for (p = longopts, option_index = 0; p->name; p++, option_index++)
855 if (!strncmp (p->name, nextchar, nameend - nextchar))
857 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
859 /* Exact match found. */
861 indfound = option_index;
865 else if (pfound == NULL)
867 /* First nonexact match found. */
869 indfound = option_index;
872 /* Second or later nonexact match found. */
877 if (FLAC__share__opterr)
878 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
879 argv[0], argv[FLAC__share__optind]);
880 nextchar += strlen (nextchar);
881 FLAC__share__optind++;
886 option_index = indfound;
889 /* Don't test has_arg with >, because some C compilers don't
890 allow it to be used on enums. */
892 FLAC__share__optarg = nameend + 1;
895 if (FLAC__share__opterr)
896 fprintf (stderr, _("\
897 %s: option `-W %s' doesn't allow an argument\n"),
898 argv[0], pfound->name);
900 nextchar += strlen (nextchar);
904 else if (pfound->has_arg == 1)
906 if (FLAC__share__optind < argc)
907 FLAC__share__optarg = argv[FLAC__share__optind++];
910 if (FLAC__share__opterr)
912 _("%s: option `%s' requires an argument\n"),
913 argv[0], argv[FLAC__share__optind - 1]);
914 nextchar += strlen (nextchar);
915 return optstring[0] == ':' ? ':' : '?';
918 nextchar += strlen (nextchar);
920 *longind = option_index;
923 *(pfound->flag) = pfound->val;
929 return 'W'; /* Let the application handle it. */
935 /* This is an option that accepts an argument optionally. */
936 if (*nextchar != '\0')
938 FLAC__share__optarg = nextchar;
939 FLAC__share__optind++;
942 FLAC__share__optarg = NULL;
947 /* This is an option that requires an argument. */
948 if (*nextchar != '\0')
950 FLAC__share__optarg = nextchar;
951 /* If we end this ARGV-element by taking the rest as an arg,
952 we must advance to the next element now. */
953 FLAC__share__optind++;
955 else if (FLAC__share__optind == argc)
957 if (FLAC__share__opterr)
959 /* 1003.2 specifies the format of this message. */
961 _("%s: option requires an argument -- %c\n"),
964 FLAC__share__optopt = c;
965 if (optstring[0] == ':')
971 /* We already incremented `FLAC__share__optind' once;
972 increment it again when taking next ARGV-elt as argument. */
973 FLAC__share__optarg = argv[FLAC__share__optind++];
982 FLAC__share__getopt (argc, argv, optstring)
985 const char *optstring;
987 return FLAC__share___getopt_internal (argc, argv, optstring,
988 (const struct FLAC__share__option *) 0,
993 #endif /* Not ELIDE_CODE. */
997 /* Compile with -DTEST to make an executable for use in testing
998 the above definition of `FLAC__share__getopt'. */
1006 int digit_optind = 0;
1010 int this_option_optind = FLAC__share__optind ? FLAC__share__optind : 1;
1012 c = FLAC__share__getopt (argc, argv, "abc:d:0123456789");
1028 if (digit_optind != 0 && digit_optind != this_option_optind)
1029 printf ("digits occur in two different argv-elements.\n");
1030 digit_optind = this_option_optind;
1031 printf ("option %c\n", c);
1035 printf ("option a\n");
1039 printf ("option b\n");
1043 printf ("option c with value `%s'\n", FLAC__share__optarg);
1050 printf ("?? getopt returned character code 0%o ??\n", c);
1054 if (FLAC__share__optind < argc)
1056 printf ("non-option ARGV-elements: ");
1057 while (FLAC__share__optind < argc)
1058 printf ("%s ", argv[FLAC__share__optind++]);