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1/* Getopt for GNU.
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
4 before changing it!
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.
8
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.
13
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.
18
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
22 02111-1307 USA. */
23
24/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
25 Ditto for AIX 3.2 and <stdlib.h>. */
26#ifndef _NO_PROTO
27# define _NO_PROTO
28#endif
29
30#ifdef HAVE_CONFIG_H
31# include <config.h>
32#endif
33
34#if !defined __STDC__ || !__STDC__
35/* This is a separate conditional since some stdc systems
36 reject `defined (const)'. */
37# ifndef const
38# define const
39# endif
40#endif
41
42#include <stdio.h>
43
44/* Comment out all this code if we are using the GNU C Library, and are not
45 actually compiling the library itself. This code is part of the GNU C
46 Library, but also included in many other GNU distributions. Compiling
47 and linking in this code is a waste when using the GNU C library
48 (especially if it is a shared library). Rather than having every GNU
49 program understand `configure --with-gnu-libc' and omit the object files,
50 it is simpler to just do this in the source for each such file. */
51
52#define GETOPT_INTERFACE_VERSION 2
53#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
54# include <gnu-versions.h>
55# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
56# define ELIDE_CODE
57# endif
58#endif
59
60#ifndef ELIDE_CODE
61
62
63/* This needs to come after some library #include
64 to get __GNU_LIBRARY__ defined. */
65#ifdef __GNU_LIBRARY__
66/* Don't include stdlib.h for non-GNU C libraries because some of them
67 contain conflicting prototypes for getopt. */
68# include <stdlib.h>
69# include <unistd.h>
70#endif /* GNU C library. */
71
72#ifdef VMS
73# include <unixlib.h>
74# if HAVE_STRING_H - 0
75# include <string.h>
76# endif
77#endif
78
79#ifndef _
80/* This is for other GNU distributions with internationalized messages. */
81# if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
82# include <libintl.h>
83# ifndef _
84# define _(msgid) gettext (msgid)
85# endif
86# else
87# define _(msgid) (msgid)
88# endif
89# if defined _LIBC && defined USE_IN_LIBIO
90# include <wchar.h>
91# endif
92#endif
93
94#ifndef attribute_hidden
95# define attribute_hidden
96#endif
97
98/* This version of `getopt' appears to the caller like standard Unix `getopt'
99 but it behaves differently for the user, since it allows the user
100 to intersperse the options with the other arguments.
101
102 As `getopt' works, it permutes the elements of ARGV so that,
103 when it is done, all the options precede everything else. Thus
104 all application programs are extended to handle flexible argument order.
105
106 Setting the environment variable POSIXLY_CORRECT disables permutation.
107 Then the behavior is completely standard.
108
109 GNU application programs can use a third alternative mode in which
110 they can distinguish the relative order of options and other arguments. */
111
112#include "getopt.h"
113
114/* For communication from `getopt' to the caller.
115 When `getopt' finds an option that takes an argument,
116 the argument value is returned here.
117 Also, when `ordering' is RETURN_IN_ORDER,
118 each non-option ARGV-element is returned here. */
119
120char *optarg;
121
122/* Index in ARGV of the next element to be scanned.
123 This is used for communication to and from the caller
124 and for communication between successive calls to `getopt'.
125
126 On entry to `getopt', zero means this is the first call; initialize.
127
128 When `getopt' returns -1, this is the index of the first of the
129 non-option elements that the caller should itself scan.
130
131 Otherwise, `optind' communicates from one call to the next
132 how much of ARGV has been scanned so far. */
133
134/* 1003.2 says this must be 1 before any call. */
135int optind = 1;
136
137/* Formerly, initialization of getopt depended on optind==0, which
138 causes problems with re-calling getopt as programs generally don't
139 know that. */
140
141int __getopt_initialized attribute_hidden;
142
143/* The next char to be scanned in the option-element
144 in which the last option character we returned was found.
145 This allows us to pick up the scan where we left off.
146
147 If this is zero, or a null string, it means resume the scan
148 by advancing to the next ARGV-element. */
149
150static char *nextchar;
151
152/* Callers store zero here to inhibit the error message
153 for unrecognized options. */
154
155int opterr = 1;
156
157/* Set to an option character which was unrecognized.
158 This must be initialized on some systems to avoid linking in the
159 system's own getopt implementation. */
160
161int optopt = '?';
162
163/* Describe how to deal with options that follow non-option ARGV-elements.
164
165 If the caller did not specify anything,
166 the default is REQUIRE_ORDER if the environment variable
167 POSIXLY_CORRECT is defined, PERMUTE otherwise.
168
169 REQUIRE_ORDER means don't recognize them as options;
170 stop option processing when the first non-option is seen.
171 This is what Unix does.
172 This mode of operation is selected by either setting the environment
173 variable POSIXLY_CORRECT, or using `+' as the first character
174 of the list of option characters.
175
176 PERMUTE is the default. We permute the contents of ARGV as we scan,
177 so that eventually all the non-options are at the end. This allows options
178 to be given in any order, even with programs that were not written to
179 expect this.
180
181 RETURN_IN_ORDER is an option available to programs that were written
182 to expect options and other ARGV-elements in any order and that care about
183 the ordering of the two. We describe each non-option ARGV-element
184 as if it were the argument of an option with character code 1.
185 Using `-' as the first character of the list of option characters
186 selects this mode of operation.
187
188 The special argument `--' forces an end of option-scanning regardless
189 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
190 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
191
192static enum
193{
194 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
195} ordering;
196
197/* Value of POSIXLY_CORRECT environment variable. */
198static char *posixly_correct;
199
200#ifdef __GNU_LIBRARY__
201/* We want to avoid inclusion of string.h with non-GNU libraries
202 because there are many ways it can cause trouble.
203 On some systems, it contains special magic macros that don't work
204 in GCC. */
205# include <string.h>
206# define my_index strchr
207#else
208
209# if HAVE_STRING_H
210# include <string.h>
211# else
212# include <strings.h>
213# endif
214
215/* Avoid depending on library functions or files
216 whose names are inconsistent. */
217
218#ifndef getenv
219extern char *getenv ();
220#endif
221
222static char *
223my_index (str, chr)
224 const char *str;
225 int chr;
226{
227 while (*str)
228 {
229 if (*str == chr)
230 return (char *) str;
231 str++;
232 }
233 return 0;
234}
235
236/* If using GCC, we can safely declare strlen this way.
237 If not using GCC, it is ok not to declare it. */
238#ifdef __GNUC__
239/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
240 That was relevant to code that was here before. */
241# if (!defined __STDC__ || !__STDC__) && !defined strlen
242/* gcc with -traditional declares the built-in strlen to return int,
243 and has done so at least since version 2.4.5. -- rms. */
244extern int strlen (const char *);
245# endif /* not __STDC__ */
246#endif /* __GNUC__ */
247
248#endif /* not __GNU_LIBRARY__ */
249
250/* Handle permutation of arguments. */
251
252/* Describe the part of ARGV that contains non-options that have
253 been skipped. `first_nonopt' is the index in ARGV of the first of them;
254 `last_nonopt' is the index after the last of them. */
255
256static int first_nonopt;
257static int last_nonopt;
258
259#ifdef _LIBC
260/* Stored original parameters.
261 XXX This is no good solution. We should rather copy the args so
262 that we can compare them later. But we must not use malloc(3). */
263extern int __libc_argc;
264extern char **__libc_argv;
265
266/* Bash 2.0 gives us an environment variable containing flags
267 indicating ARGV elements that should not be considered arguments. */
268
269# ifdef USE_NONOPTION_FLAGS
270/* Defined in getopt_init.c */
271extern char *__getopt_nonoption_flags;
272
273static int nonoption_flags_max_len;
274static int nonoption_flags_len;
275# endif
276
277# ifdef USE_NONOPTION_FLAGS
278# define SWAP_FLAGS(ch1, ch2) \
279 if (nonoption_flags_len > 0) \
280 { \
281 char __tmp = __getopt_nonoption_flags[ch1]; \
282 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
283 __getopt_nonoption_flags[ch2] = __tmp; \
284 }
285# else
286# define SWAP_FLAGS(ch1, ch2)
287# endif
288#else /* !_LIBC */
289# define SWAP_FLAGS(ch1, ch2)
290#endif /* _LIBC */
291
292/* Exchange two adjacent subsequences of ARGV.
293 One subsequence is elements [first_nonopt,last_nonopt)
294 which contains all the non-options that have been skipped so far.
295 The other is elements [last_nonopt,optind), which contains all
296 the options processed since those non-options were skipped.
297
298 `first_nonopt' and `last_nonopt' are relocated so that they describe
299 the new indices of the non-options in ARGV after they are moved. */
300
301#if defined __STDC__ && __STDC__
302static void exchange (char **);
303#endif
304
305static void
306exchange (argv)
307 char **argv;
308{
309 int bottom = first_nonopt;
310 int middle = last_nonopt;
311 int top = optind;
312 char *tem;
313
314 /* Exchange the shorter segment with the far end of the longer segment.
315 That puts the shorter segment into the right place.
316 It leaves the longer segment in the right place overall,
317 but it consists of two parts that need to be swapped next. */
318
319#if defined _LIBC && defined USE_NONOPTION_FLAGS
320 /* First make sure the handling of the `__getopt_nonoption_flags'
321 string can work normally. Our top argument must be in the range
322 of the string. */
323 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
324 {
325 /* We must extend the array. The user plays games with us and
326 presents new arguments. */
327 char *new_str = malloc (top + 1);
328 if (new_str == NULL)
329 nonoption_flags_len = nonoption_flags_max_len = 0;
330 else
331 {
332 memset (__mempcpy (new_str, __getopt_nonoption_flags,
333 nonoption_flags_max_len),
334 '\0', top + 1 - nonoption_flags_max_len);
335 nonoption_flags_max_len = top + 1;
336 __getopt_nonoption_flags = new_str;
337 }
338 }
339#endif
340
341 while (top > middle && middle > bottom)
342 {
343 if (top - middle > middle - bottom)
344 {
345 /* Bottom segment is the short one. */
346 int len = middle - bottom;
347 register int i;
348
349 /* Swap it with the top part of the top segment. */
350 for (i = 0; i < len; i++)
351 {
352 tem = argv[bottom + i];
353 argv[bottom + i] = argv[top - (middle - bottom) + i];
354 argv[top - (middle - bottom) + i] = tem;
355 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
356 }
357 /* Exclude the moved bottom segment from further swapping. */
358 top -= len;
359 }
360 else
361 {
362 /* Top segment is the short one. */
363 int len = top - middle;
364 register int i;
365
366 /* Swap it with the bottom part of the bottom segment. */
367 for (i = 0; i < len; i++)
368 {
369 tem = argv[bottom + i];
370 argv[bottom + i] = argv[middle + i];
371 argv[middle + i] = tem;
372 SWAP_FLAGS (bottom + i, middle + i);
373 }
374 /* Exclude the moved top segment from further swapping. */
375 bottom += len;
376 }
377 }
378
379 /* Update records for the slots the non-options now occupy. */
380
381 first_nonopt += (optind - last_nonopt);
382 last_nonopt = optind;
383}
384
385/* Initialize the internal data when the first call is made. */
386
387#if defined __STDC__ && __STDC__
388static const char *_getopt_initialize (int, char *const *, const char *);
389#endif
390static const char *
391_getopt_initialize (argc, argv, optstring)
392 int argc;
393 char *const *argv;
394 const char *optstring;
395{
396 /* Start processing options with ARGV-element 1 (since ARGV-element 0
397 is the program name); the sequence of previously skipped
398 non-option ARGV-elements is empty. */
399
400 first_nonopt = last_nonopt = optind;
401
402 nextchar = NULL;
403
404 posixly_correct = getenv ("POSIXLY_CORRECT");
405
406 /* Determine how to handle the ordering of options and nonoptions. */
407
408 if (optstring[0] == '-')
409 {
410 ordering = RETURN_IN_ORDER;
411 ++optstring;
412 }
413 else if (optstring[0] == '+')
414 {
415 ordering = REQUIRE_ORDER;
416 ++optstring;
417 }
418 else if (posixly_correct != NULL)
419 ordering = REQUIRE_ORDER;
420 else
421 ordering = PERMUTE;
422
423#if defined _LIBC && defined USE_NONOPTION_FLAGS
424 if (posixly_correct == NULL
425 && argc == __libc_argc && argv == __libc_argv)
426 {
427 if (nonoption_flags_max_len == 0)
428 {
429 if (__getopt_nonoption_flags == NULL
430 || __getopt_nonoption_flags[0] == '\0')
431 nonoption_flags_max_len = -1;
432 else
433 {
434 const char *orig_str = __getopt_nonoption_flags;
435 int len = nonoption_flags_max_len = strlen (orig_str);
436 if (nonoption_flags_max_len < argc)
437 nonoption_flags_max_len = argc;
438 __getopt_nonoption_flags =
439 (char *) malloc (nonoption_flags_max_len);
440 if (__getopt_nonoption_flags == NULL)
441 nonoption_flags_max_len = -1;
442 else
443 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
444 '\0', nonoption_flags_max_len - len);
445 }
446 }
447 nonoption_flags_len = nonoption_flags_max_len;
448 }
449 else
450 nonoption_flags_len = 0;
451#endif
452
453 return optstring;
454}
455
456/* Scan elements of ARGV (whose length is ARGC) for option characters
457 given in OPTSTRING.
458
459 If an element of ARGV starts with '-', and is not exactly "-" or "--",
460 then it is an option element. The characters of this element
461 (aside from the initial '-') are option characters. If `getopt'
462 is called repeatedly, it returns successively each of the option characters
463 from each of the option elements.
464
465 If `getopt' finds another option character, it returns that character,
466 updating `optind' and `nextchar' so that the next call to `getopt' can
467 resume the scan with the following option character or ARGV-element.
468
469 If there are no more option characters, `getopt' returns -1.
470 Then `optind' is the index in ARGV of the first ARGV-element
471 that is not an option. (The ARGV-elements have been permuted
472 so that those that are not options now come last.)
473
474 OPTSTRING is a string containing the legitimate option characters.
475 If an option character is seen that is not listed in OPTSTRING,
476 return '?' after printing an error message. If you set `opterr' to
477 zero, the error message is suppressed but we still return '?'.
478
479 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
480 so the following text in the same ARGV-element, or the text of the following
481 ARGV-element, is returned in `optarg'. Two colons mean an option that
482 wants an optional arg; if there is text in the current ARGV-element,
483 it is returned in `optarg', otherwise `optarg' is set to zero.
484
485 If OPTSTRING starts with `-' or `+', it requests different methods of
486 handling the non-option ARGV-elements.
487 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
488
489 Long-named options begin with `--' instead of `-'.
490 Their names may be abbreviated as long as the abbreviation is unique
491 or is an exact match for some defined option. If they have an
492 argument, it follows the option name in the same ARGV-element, separated
493 from the option name by a `=', or else the in next ARGV-element.
494 When `getopt' finds a long-named option, it returns 0 if that option's
495 `flag' field is nonzero, the value of the option's `val' field
496 if the `flag' field is zero.
497
498 The elements of ARGV aren't really const, because we permute them.
499 But we pretend they're const in the prototype to be compatible
500 with other systems.
501
502 LONGOPTS is a vector of `struct option' terminated by an
503 element containing a name which is zero.
504
505 LONGIND returns the index in LONGOPT of the long-named option found.
506 It is only valid when a long-named option has been found by the most
507 recent call.
508
509 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
510 long-named options. */
511
512int
513_getopt_internal (argc, argv, optstring, longopts, longind, long_only)
514 int argc;
515 char *const *argv;
516 const char *optstring;
517 const struct option *longopts;
518 int *longind;
519 int long_only;
520{
521 int print_errors = opterr;
522 if (optstring[0] == ':')
523 print_errors = 0;
524
525 if (argc < 1)
526 return -1;
527
528 optarg = NULL;
529
530 if (optind == 0 || !__getopt_initialized)
531 {
532 if (optind == 0)
533 optind = 1; /* Don't scan ARGV[0], the program name. */
534 optstring = _getopt_initialize (argc, argv, optstring);
535 __getopt_initialized = 1;
536 }
537
538 /* Test whether ARGV[optind] points to a non-option argument.
539 Either it does not have option syntax, or there is an environment flag
540 from the shell indicating it is not an option. The later information
541 is only used when the used in the GNU libc. */
542#if defined _LIBC && defined USE_NONOPTION_FLAGS
543# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
544 || (optind < nonoption_flags_len \
545 && __getopt_nonoption_flags[optind] == '1'))
546#else
547# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
548#endif
549
550 if (nextchar == NULL || *nextchar == '\0')
551 {
552 /* Advance to the next ARGV-element. */
553
554 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
555 moved back by the user (who may also have changed the arguments). */
556 if (last_nonopt > optind)
557 last_nonopt = optind;
558 if (first_nonopt > optind)
559 first_nonopt = optind;
560
561 if (ordering == PERMUTE)
562 {
563 /* If we have just processed some options following some non-options,
564 exchange them so that the options come first. */
565
566 if (first_nonopt != last_nonopt && last_nonopt != optind)
567 exchange ((char **) argv);
568 else if (last_nonopt != optind)
569 first_nonopt = optind;
570
571 /* Skip any additional non-options
572 and extend the range of non-options previously skipped. */
573
574 while (optind < argc && NONOPTION_P)
575 optind++;
576 last_nonopt = optind;
577 }
578
579 /* The special ARGV-element `--' means premature end of options.
580 Skip it like a null option,
581 then exchange with previous non-options as if it were an option,
582 then skip everything else like a non-option. */
583
584 if (optind != argc && !strcmp (argv[optind], "--"))
585 {
586 optind++;
587
588 if (first_nonopt != last_nonopt && last_nonopt != optind)
589 exchange ((char **) argv);
590 else if (first_nonopt == last_nonopt)
591 first_nonopt = optind;
592 last_nonopt = argc;
593
594 optind = argc;
595 }
596
597 /* If we have done all the ARGV-elements, stop the scan
598 and back over any non-options that we skipped and permuted. */
599
600 if (optind == argc)
601 {
602 /* Set the next-arg-index to point at the non-options
603 that we previously skipped, so the caller will digest them. */
604 if (first_nonopt != last_nonopt)
605 optind = first_nonopt;
606 return -1;
607 }
608
609 /* If we have come to a non-option and did not permute it,
610 either stop the scan or describe it to the caller and pass it by. */
611
612 if (NONOPTION_P)
613 {
614 if (ordering == REQUIRE_ORDER)
615 return -1;
616 optarg = argv[optind++];
617 return 1;
618 }
619
620 /* We have found another option-ARGV-element.
621 Skip the initial punctuation. */
622
623 nextchar = (argv[optind] + 1
624 + (longopts != NULL && argv[optind][1] == '-'));
625 }
626
627 /* Decode the current option-ARGV-element. */
628
629 /* Check whether the ARGV-element is a long option.
630
631 If long_only and the ARGV-element has the form "-f", where f is
632 a valid short option, don't consider it an abbreviated form of
633 a long option that starts with f. Otherwise there would be no
634 way to give the -f short option.
635
636 On the other hand, if there's a long option "fubar" and
637 the ARGV-element is "-fu", do consider that an abbreviation of
638 the long option, just like "--fu", and not "-f" with arg "u".
639
640 This distinction seems to be the most useful approach. */
641
642 if (longopts != NULL
643 && (argv[optind][1] == '-'
644 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
645 {
646 char *nameend;
647 const struct option *p;
648 const struct option *pfound = NULL;
649 int exact = 0;
650 int ambig = 0;
651 int indfound = -1;
652 int option_index;
653
654 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
655 /* Do nothing. */ ;
656
657 /* Test all long options for either exact match
658 or abbreviated matches. */
659 for (p = longopts, option_index = 0; p->name; p++, option_index++)
660 if (!strncmp (p->name, nextchar, nameend - nextchar))
661 {
662 if ((unsigned int) (nameend - nextchar)
663 == (unsigned int) strlen (p->name))
664 {
665 /* Exact match found. */
666 pfound = p;
667 indfound = option_index;
668 exact = 1;
669 break;
670 }
671 else if (pfound == NULL)
672 {
673 /* First nonexact match found. */
674 pfound = p;
675 indfound = option_index;
676 }
677 else if (long_only
678 || pfound->has_arg != p->has_arg
679 || pfound->flag != p->flag
680 || pfound->val != p->val)
681 /* Second or later nonexact match found. */
682 ambig = 1;
683 }
684
685 if (ambig && !exact)
686 {
687 if (print_errors)
688 {
689#if defined _LIBC && defined USE_IN_LIBIO
690 char *buf;
691
692 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"),
693 argv[0], argv[optind]) >= 0)
694 {
695
696 if (_IO_fwide (stderr, 0) > 0)
697 __fwprintf (stderr, L"%s", buf);
698 else
699 fputs (buf, stderr);
700
701 free (buf);
702 }
703#else
704 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
705 argv[0], argv[optind]);
706#endif
707 }
708 nextchar += strlen (nextchar);
709 optind++;
710 optopt = 0;
711 return '?';
712 }
713
714 if (pfound != NULL)
715 {
716 option_index = indfound;
717 optind++;
718 if (*nameend)
719 {
720 /* Don't test has_arg with >, because some C compilers don't
721 allow it to be used on enums. */
722 if (pfound->has_arg)
723 optarg = nameend + 1;
724 else
725 {
726 if (print_errors)
727 {
728#if defined _LIBC && defined USE_IN_LIBIO
729 char *buf;
730 int n;
731#endif
732
733 if (argv[optind - 1][1] == '-')
734 {
735 /* --option */
736#if defined _LIBC && defined USE_IN_LIBIO
737 n = __asprintf (&buf, _("\
738%s: option `--%s' doesn't allow an argument\n"),
739 argv[0], pfound->name);
740#else
741 fprintf (stderr, _("\
742%s: option `--%s' doesn't allow an argument\n"),
743 argv[0], pfound->name);
744#endif
745 }
746 else
747 {
748 /* +option or -option */
749#if defined _LIBC && defined USE_IN_LIBIO
750 n = __asprintf (&buf, _("\
751%s: option `%c%s' doesn't allow an argument\n"),
752 argv[0], argv[optind - 1][0],
753 pfound->name);
754#else
755 fprintf (stderr, _("\
756%s: option `%c%s' doesn't allow an argument\n"),
757 argv[0], argv[optind - 1][0], pfound->name);
758#endif
759 }
760
761#if defined _LIBC && defined USE_IN_LIBIO
762 if (n >= 0)
763 {
764 if (_IO_fwide (stderr, 0) > 0)
765 __fwprintf (stderr, L"%s", buf);
766 else
767 fputs (buf, stderr);
768
769 free (buf);
770 }
771#endif
772 }
773
774 nextchar += strlen (nextchar);
775
776 optopt = pfound->val;
777 return '?';
778 }
779 }
780 else if (pfound->has_arg == 1)
781 {
782 if (optind < argc)
783 optarg = argv[optind++];
784 else
785 {
786 if (print_errors)
787 {
788#if defined _LIBC && defined USE_IN_LIBIO
789 char *buf;
790
791 if (__asprintf (&buf, _("\
792%s: option `%s' requires an argument\n"),
793 argv[0], argv[optind - 1]) >= 0)
794 {
795 if (_IO_fwide (stderr, 0) > 0)
796 __fwprintf (stderr, L"%s", buf);
797 else
798 fputs (buf, stderr);
799
800 free (buf);
801 }
802#else
803 fprintf (stderr,
804 _("%s: option `%s' requires an argument\n"),
805 argv[0], argv[optind - 1]);
806#endif
807 }
808 nextchar += strlen (nextchar);
809 optopt = pfound->val;
810 return optstring[0] == ':' ? ':' : '?';
811 }
812 }
813 nextchar += strlen (nextchar);
814 if (longind != NULL)
815 *longind = option_index;
816 if (pfound->flag)
817 {
818 *(pfound->flag) = pfound->val;
819 return 0;
820 }
821 return pfound->val;
822 }
823
824 /* Can't find it as a long option. If this is not getopt_long_only,
825 or the option starts with '--' or is not a valid short
826 option, then it's an error.
827 Otherwise interpret it as a short option. */
828 if (!long_only || argv[optind][1] == '-'
829 || my_index (optstring, *nextchar) == NULL)
830 {
831 if (print_errors)
832 {
833#if defined _LIBC && defined USE_IN_LIBIO
834 char *buf;
835 int n;
836#endif
837
838 if (argv[optind][1] == '-')
839 {
840 /* --option */
841#if defined _LIBC && defined USE_IN_LIBIO
842 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
843 argv[0], nextchar);
844#else
845 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
846 argv[0], nextchar);
847#endif
848 }
849 else
850 {
851 /* +option or -option */
852#if defined _LIBC && defined USE_IN_LIBIO
853 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
854 argv[0], argv[optind][0], nextchar);
855#else
856 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
857 argv[0], argv[optind][0], nextchar);
858#endif
859 }
860
861#if defined _LIBC && defined USE_IN_LIBIO
862 if (n >= 0)
863 {
864 if (_IO_fwide (stderr, 0) > 0)
865 __fwprintf (stderr, L"%s", buf);
866 else
867 fputs (buf, stderr);
868
869 free (buf);
870 }
871#endif
872 }
873 nextchar = (char *) "";
874 optind++;
875 optopt = 0;
876 return '?';
877 }
878 }
879
880 /* Look at and handle the next short option-character. */
881
882 {
883 char c = *nextchar++;
884 char *temp = my_index (optstring, c);
885
886 /* Increment `optind' when we start to process its last character. */
887 if (*nextchar == '\0')
888 ++optind;
889
890 if (temp == NULL || c == ':')
891 {
892 if (print_errors)
893 {
894#if defined _LIBC && defined USE_IN_LIBIO
895 char *buf;
896 int n;
897#endif
898
899 if (posixly_correct)
900 {
901 /* 1003.2 specifies the format of this message. */
902#if defined _LIBC && defined USE_IN_LIBIO
903 n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
904 argv[0], c);
905#else
906 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
907#endif
908 }
909 else
910 {
911#if defined _LIBC && defined USE_IN_LIBIO
912 n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
913 argv[0], c);
914#else
915 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
916#endif
917 }
918
919#if defined _LIBC && defined USE_IN_LIBIO
920 if (n >= 0)
921 {
922 if (_IO_fwide (stderr, 0) > 0)
923 __fwprintf (stderr, L"%s", buf);
924 else
925 fputs (buf, stderr);
926
927 free (buf);
928 }
929#endif
930 }
931 optopt = c;
932 return '?';
933 }
934 /* Convenience. Treat POSIX -W foo same as long option --foo */
935 if (temp[0] == 'W' && temp[1] == ';')
936 {
937 char *nameend;
938 const struct option *p;
939 const struct option *pfound = NULL;
940 int exact = 0;
941 int ambig = 0;
942 int indfound = 0;
943 int option_index;
944
945 /* This is an option that requires an argument. */
946 if (*nextchar != '\0')
947 {
948 optarg = nextchar;
949 /* If we end this ARGV-element by taking the rest as an arg,
950 we must advance to the next element now. */
951 optind++;
952 }
953 else if (optind == argc)
954 {
955 if (print_errors)
956 {
957 /* 1003.2 specifies the format of this message. */
958#if defined _LIBC && defined USE_IN_LIBIO
959 char *buf;
960
961 if (__asprintf (&buf,
962 _("%s: option requires an argument -- %c\n"),
963 argv[0], c) >= 0)
964 {
965 if (_IO_fwide (stderr, 0) > 0)
966 __fwprintf (stderr, L"%s", buf);
967 else
968 fputs (buf, stderr);
969
970 free (buf);
971 }
972#else
973 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
974 argv[0], c);
975#endif
976 }
977 optopt = c;
978 if (optstring[0] == ':')
979 c = ':';
980 else
981 c = '?';
982 return c;
983 }
984 else
985 /* We already incremented `optind' once;
986 increment it again when taking next ARGV-elt as argument. */
987 optarg = argv[optind++];
988
989 /* optarg is now the argument, see if it's in the
990 table of longopts. */
991
992 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
993 /* Do nothing. */ ;
994
995 /* Test all long options for either exact match
996 or abbreviated matches. */
997 for (p = longopts, option_index = 0; p->name; p++, option_index++)
998 if (!strncmp (p->name, nextchar, nameend - nextchar))
999 {
1000 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
1001 {
1002 /* Exact match found. */
1003 pfound = p;
1004 indfound = option_index;
1005 exact = 1;
1006 break;
1007 }
1008 else if (pfound == NULL)
1009 {
1010 /* First nonexact match found. */
1011 pfound = p;
1012 indfound = option_index;
1013 }
1014 else
1015 /* Second or later nonexact match found. */
1016 ambig = 1;
1017 }
1018 if (ambig && !exact)
1019 {
1020 if (print_errors)
1021 {
1022#if defined _LIBC && defined USE_IN_LIBIO
1023 char *buf;
1024
1025 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
1026 argv[0], argv[optind]) >= 0)
1027 {
1028 if (_IO_fwide (stderr, 0) > 0)
1029 __fwprintf (stderr, L"%s", buf);
1030 else
1031 fputs (buf, stderr);
1032
1033 free (buf);
1034 }
1035#else
1036 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
1037 argv[0], argv[optind]);
1038#endif
1039 }
1040 nextchar += strlen (nextchar);
1041 optind++;
1042 return '?';
1043 }
1044 if (pfound != NULL)
1045 {
1046 option_index = indfound;
1047 if (*nameend)
1048 {
1049 /* Don't test has_arg with >, because some C compilers don't
1050 allow it to be used on enums. */
1051 if (pfound->has_arg)
1052 optarg = nameend + 1;
1053 else
1054 {
1055 if (print_errors)
1056 {
1057#if defined _LIBC && defined USE_IN_LIBIO
1058 char *buf;
1059
1060 if (__asprintf (&buf, _("\
1061%s: option `-W %s' doesn't allow an argument\n"),
1062 argv[0], pfound->name) >= 0)
1063 {
1064 if (_IO_fwide (stderr, 0) > 0)
1065 __fwprintf (stderr, L"%s", buf);
1066 else
1067 fputs (buf, stderr);
1068
1069 free (buf);
1070 }
1071#else
1072 fprintf (stderr, _("\
1073%s: option `-W %s' doesn't allow an argument\n"),
1074 argv[0], pfound->name);
1075#endif
1076 }
1077
1078 nextchar += strlen (nextchar);
1079 return '?';
1080 }
1081 }
1082 else if (pfound->has_arg == 1)
1083 {
1084 if (optind < argc)
1085 optarg = argv[optind++];
1086 else
1087 {
1088 if (print_errors)
1089 {
1090#if defined _LIBC && defined USE_IN_LIBIO
1091 char *buf;
1092
1093 if (__asprintf (&buf, _("\
1094%s: option `%s' requires an argument\n"),
1095 argv[0], argv[optind - 1]) >= 0)
1096 {
1097 if (_IO_fwide (stderr, 0) > 0)
1098 __fwprintf (stderr, L"%s", buf);
1099 else
1100 fputs (buf, stderr);
1101
1102 free (buf);
1103 }
1104#else
1105 fprintf (stderr,
1106 _("%s: option `%s' requires an argument\n"),
1107 argv[0], argv[optind - 1]);
1108#endif
1109 }
1110 nextchar += strlen (nextchar);
1111 return optstring[0] == ':' ? ':' : '?';
1112 }
1113 }
1114 nextchar += strlen (nextchar);
1115 if (longind != NULL)
1116 *longind = option_index;
1117 if (pfound->flag)
1118 {
1119 *(pfound->flag) = pfound->val;
1120 return 0;
1121 }
1122 return pfound->val;
1123 }
1124 nextchar = NULL;
1125 return 'W'; /* Let the application handle it. */
1126 }
1127 if (temp[1] == ':')
1128 {
1129 if (temp[2] == ':')
1130 {
1131 /* This is an option that accepts an argument optionally. */
1132 if (*nextchar != '\0')
1133 {
1134 optarg = nextchar;
1135 optind++;
1136 }
1137 else
1138 optarg = NULL;
1139 nextchar = NULL;
1140 }
1141 else
1142 {
1143 /* This is an option that requires an argument. */
1144 if (*nextchar != '\0')
1145 {
1146 optarg = nextchar;
1147 /* If we end this ARGV-element by taking the rest as an arg,
1148 we must advance to the next element now. */
1149 optind++;
1150 }
1151 else if (optind == argc)
1152 {
1153 if (print_errors)
1154 {
1155 /* 1003.2 specifies the format of this message. */
1156#if defined _LIBC && defined USE_IN_LIBIO
1157 char *buf;
1158
1159 if (__asprintf (&buf, _("\
1160%s: option requires an argument -- %c\n"),
1161 argv[0], c) >= 0)
1162 {
1163 if (_IO_fwide (stderr, 0) > 0)
1164 __fwprintf (stderr, L"%s", buf);
1165 else
1166 fputs (buf, stderr);
1167
1168 free (buf);
1169 }
1170#else
1171 fprintf (stderr,
1172 _("%s: option requires an argument -- %c\n"),
1173 argv[0], c);
1174#endif
1175 }
1176 optopt = c;
1177 if (optstring[0] == ':')
1178 c = ':';
1179 else
1180 c = '?';
1181 }
1182 else
1183 /* We already incremented `optind' once;
1184 increment it again when taking next ARGV-elt as argument. */
1185 optarg = argv[optind++];
1186 nextchar = NULL;
1187 }
1188 }
1189 return c;
1190 }
1191}
1192
1193int
1194getopt (argc, argv, optstring)
1195 int argc;
1196 char *const *argv;
1197 const char *optstring;
1198{
1199 return _getopt_internal (argc, argv, optstring,
1200 (const struct option *) 0,
1201 (int *) 0,
1202 0);
1203}
1204
1205#endif /* Not ELIDE_CODE. */
1206
1207#ifdef TEST
1208
1209/* Compile with -DTEST to make an executable for use in testing
1210 the above definition of `getopt'. */
1211
1212int
1213main (argc, argv)
1214 int argc;
1215 char **argv;
1216{
1217 int c;
1218 int digit_optind = 0;
1219
1220 while (1)
1221 {
1222 int this_option_optind = optind ? optind : 1;
1223
1224 c = getopt (argc, argv, "abc:d:0123456789");
1225 if (c == -1)
1226 break;
1227
1228 switch (c)
1229 {
1230 case '0':
1231 case '1':
1232 case '2':
1233 case '3':
1234 case '4':
1235 case '5':
1236 case '6':
1237 case '7':
1238 case '8':
1239 case '9':
1240 if (digit_optind != 0 && digit_optind != this_option_optind)
1241 printf ("digits occur in two different argv-elements.\n");
1242 digit_optind = this_option_optind;
1243 printf ("option %c\n", c);
1244 break;
1245
1246 case 'a':
1247 printf ("option a\n");
1248 break;
1249
1250 case 'b':
1251 printf ("option b\n");
1252 break;
1253
1254 case 'c':
1255 printf ("option c with value `%s'\n", optarg);
1256 break;
1257
1258 case '?':
1259 break;
1260
1261 default:
1262 printf ("?? getopt returned character code 0%o ??\n", c);
1263 }
1264 }
1265
1266 if (optind < argc)
1267 {
1268 printf ("non-option ARGV-elements: ");
1269 while (optind < argc)
1270 printf ("%s ", argv[optind++]);
1271 printf ("\n");
1272 }
1273
1274 exit (0);
1275}
1276
1277#endif /* TEST */