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 roland@gnu.ai.mit.edu
4 before changing it!
5
6 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94
7 Free Software Foundation, Inc.
8
9 This program is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Library General Public License
11 as published by the Free Software Foundation; either version 2, or
12 (at your option) any later version.
13
14 This program 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
17 GNU Library General Public License for more details.
18
19 You should have received a copy of the GNU Library General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
22
23 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
24 Ditto for AIX 3.2 and <stdlib.h>. */
25 #ifndef _NO_PROTO
26 #define _NO_PROTO
27 #endif
28
29 #ifdef HAVE_CONFIG_H
30 #if defined (emacs) || defined (CONFIG_BROKETS)
31 /* We use <config.h> instead of "config.h" so that a compilation
32 using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
33 (which it would do because it found this file in $srcdir). */
34 #include <config.h>
35 #else
36 #include "config.h"
37 #endif
38 #endif
39
40 #ifndef __STDC__
41 /* This is a separate conditional since some stdc systems
42 reject `defined (const)'. */
43 #ifndef const
44 #define const
45 #endif
46 #endif
47
48 #include <stdio.h>
49
50 /* Comment out all this code if we are using the GNU C Library, and are not
51 actually compiling the library itself. This code is part of the GNU C
52 Library, but also included in many other GNU distributions. Compiling
53 and linking in this code is a waste when using the GNU C library
54 (especially if it is a shared library). Rather than having every GNU
55 program understand `configure --with-gnu-libc' and omit the object files,
56 it is simpler to just do this in the source for each such file. */
57
58 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
59
60
61 /* This needs to come after some library #include
62 to get __GNU_LIBRARY__ defined. */
63 #ifdef __GNU_LIBRARY__
64 /* Don't include stdlib.h for non-GNU C libraries because some of them
65 contain conflicting prototypes for getopt. */
66 #include <stdlib.h>
67 #endif /* GNU C library. */
68
69 /* This version of `getopt' appears to the caller like standard Unix `getopt'
70 but it behaves differently for the user, since it allows the user
71 to intersperse the options with the other arguments.
72
73 As `getopt' works, it permutes the elements of ARGV so that,
74 when it is done, all the options precede everything else. Thus
75 all application programs are extended to handle flexible argument order.
76
77 Setting the environment variable POSIXLY_CORRECT disables permutation.
78 Then the behavior is completely standard.
79
80 GNU application programs can use a third alternative mode in which
81 they can distinguish the relative order of options and other arguments. */
82
83 #include "getopt.h"
84
85 /* For communication from `getopt' to the caller.
86 When `getopt' finds an option that takes an argument,
87 the argument value is returned here.
88 Also, when `ordering' is RETURN_IN_ORDER,
89 each non-option ARGV-element is returned here. */
90
91 char *optarg = NULL;
92
93 /* Index in ARGV of the next element to be scanned.
94 This is used for communication to and from the caller
95 and for communication between successive calls to `getopt'.
96
97 On entry to `getopt', zero means this is the first call; initialize.
98
99 When `getopt' returns EOF, this is the index of the first of the
100 non-option elements that the caller should itself scan.
101
102 Otherwise, `optind' communicates from one call to the next
103 how much of ARGV has been scanned so far. */
104
105 /* XXX 1003.2 says this must be 1 before any call. */
106 int optind = 0;
107
108 /* The next char to be scanned in the option-element
109 in which the last option character we returned was found.
110 This allows us to pick up the scan where we left off.
111
112 If this is zero, or a null string, it means resume the scan
113 by advancing to the next ARGV-element. */
114
115 static char *nextchar;
116
117 /* Callers store zero here to inhibit the error message
118 for unrecognized options. */
119
120 int opterr = 1;
121
122 /* Set to an option character which was unrecognized.
123 This must be initialized on some systems to avoid linking in the
124 system's own getopt implementation. */
125
126 int optopt = '?';
127
128 /* Describe how to deal with options that follow non-option ARGV-elements.
129
130 If the caller did not specify anything,
131 the default is REQUIRE_ORDER if the environment variable
132 POSIXLY_CORRECT is defined, PERMUTE otherwise.
133
134 REQUIRE_ORDER means don't recognize them as options;
135 stop option processing when the first non-option is seen.
136 This is what Unix does.
137 This mode of operation is selected by either setting the environment
138 variable POSIXLY_CORRECT, or using `+' as the first character
139 of the list of option characters.
140
141 PERMUTE is the default. We permute the contents of ARGV as we scan,
142 so that eventually all the non-options are at the end. This allows options
143 to be given in any order, even with programs that were not written to
144 expect this.
145
146 RETURN_IN_ORDER is an option available to programs that were written
147 to expect options and other ARGV-elements in any order and that care about
148 the ordering of the two. We describe each non-option ARGV-element
149 as if it were the argument of an option with character code 1.
150 Using `-' as the first character of the list of option characters
151 selects this mode of operation.
152
153 The special argument `--' forces an end of option-scanning regardless
154 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
155 `--' can cause `getopt' to return EOF with `optind' != ARGC. */
156
157 static enum
158 {
159 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
160 } ordering;
161
162 #ifdef __GNU_LIBRARY__
163 /* We want to avoid inclusion of string.h with non-GNU libraries
164 because there are many ways it can cause trouble.
165 On some systems, it contains special magic macros that don't work
166 in GCC. */
167 #include <string.h>
168 #define my_index strchr
169 #else
170
171 /* Avoid depending on library functions or files
172 whose names are inconsistent. */
173
174 char *getenv ();
175
176 static char *
my_index(str,chr)177 my_index (str, chr)
178 const char *str;
179 int chr;
180 {
181 while (*str)
182 {
183 if (*str == chr)
184 return (char *) str;
185 str++;
186 }
187 return 0;
188 }
189
190 /* If using GCC, we can safely declare strlen this way.
191 If not using GCC, it is ok not to declare it. */
192 #ifdef __GNUC__
193 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
194 That was relevant to code that was here before. */
195 #ifndef __STDC__
196 /* gcc with -traditional declares the built-in strlen to return int,
197 and has done so at least since version 2.4.5. -- rms. */
198 extern int strlen (const char *);
199 #endif /* not __STDC__ */
200 #endif /* __GNUC__ */
201
202 #endif /* not __GNU_LIBRARY__ */
203
204 /* Handle permutation of arguments. */
205
206 /* Describe the part of ARGV that contains non-options that have
207 been skipped. `first_nonopt' is the index in ARGV of the first of them;
208 `last_nonopt' is the index after the last of them. */
209
210 static int first_nonopt;
211 static int last_nonopt;
212
213 /* Exchange two adjacent subsequences of ARGV.
214 One subsequence is elements [first_nonopt,last_nonopt)
215 which contains all the non-options that have been skipped so far.
216 The other is elements [last_nonopt,optind), which contains all
217 the options processed since those non-options were skipped.
218
219 `first_nonopt' and `last_nonopt' are relocated so that they describe
220 the new indices of the non-options in ARGV after they are moved. */
221
222 static void exchange ( char **argv );
223 static const char *_getopt_initialize ( const char * );
224 int _getopt_internal ( int, char *const *, const char *,
225 const struct option *, int *,
226 int );
227 int getopt ( int, char *const *, const char * );
228
229 static void
exchange(argv)230 exchange (argv)
231 char **argv;
232 {
233 int bottom = first_nonopt;
234 int middle = last_nonopt;
235 int top = optind;
236 char *tem;
237
238 /* Exchange the shorter segment with the far end of the longer segment.
239 That puts the shorter segment into the right place.
240 It leaves the longer segment in the right place overall,
241 but it consists of two parts that need to be swapped next. */
242
243 while (top > middle && middle > bottom)
244 {
245 if (top - middle > middle - bottom)
246 {
247 /* Bottom segment is the short one. */
248 int len = middle - bottom;
249 register int i;
250
251 /* Swap it with the top part of the top segment. */
252 for (i = 0; i < len; i++)
253 {
254 tem = argv[bottom + i];
255 argv[bottom + i] = argv[top - (middle - bottom) + i];
256 argv[top - (middle - bottom) + i] = tem;
257 }
258 /* Exclude the moved bottom segment from further swapping. */
259 top -= len;
260 }
261 else
262 {
263 /* Top segment is the short one. */
264 int len = top - middle;
265 register int i;
266
267 /* Swap it with the bottom part of the bottom segment. */
268 for (i = 0; i < len; i++)
269 {
270 tem = argv[bottom + i];
271 argv[bottom + i] = argv[middle + i];
272 argv[middle + i] = tem;
273 }
274 /* Exclude the moved top segment from further swapping. */
275 bottom += len;
276 }
277 }
278
279 /* Update records for the slots the non-options now occupy. */
280
281 first_nonopt += (optind - last_nonopt);
282 last_nonopt = optind;
283 }
284
285 /* Initialize the internal data when the first call is made. */
286
287 static const char *
_getopt_initialize(const char * optstring)288 _getopt_initialize ( const char *optstring )
289 {
290 /* Start processing options with ARGV-element 1 (since ARGV-element 0
291 is the program name); the sequence of previously skipped
292 non-option ARGV-elements is empty. */
293
294 first_nonopt = last_nonopt = optind = 1;
295
296 nextchar = NULL;
297
298 /* Determine how to handle the ordering of options and nonoptions. */
299
300 if (optstring[0] == '-')
301 {
302 ordering = RETURN_IN_ORDER;
303 ++optstring;
304 }
305 else if (optstring[0] == '+')
306 {
307 ordering = REQUIRE_ORDER;
308 ++optstring;
309 }
310 else if (getenv ("POSIXLY_CORRECT") != NULL)
311 ordering = REQUIRE_ORDER;
312 else
313 ordering = PERMUTE;
314
315 return optstring;
316 }
317
318 /* Scan elements of ARGV (whose length is ARGC) for option characters
319 given in OPTSTRING.
320
321 If an element of ARGV starts with '-', and is not exactly "-" or "--",
322 then it is an option element. The characters of this element
323 (aside from the initial '-') are option characters. If `getopt'
324 is called repeatedly, it returns successively each of the option characters
325 from each of the option elements.
326
327 If `getopt' finds another option character, it returns that character,
328 updating `optind' and `nextchar' so that the next call to `getopt' can
329 resume the scan with the following option character or ARGV-element.
330
331 If there are no more option characters, `getopt' returns `EOF'.
332 Then `optind' is the index in ARGV of the first ARGV-element
333 that is not an option. (The ARGV-elements have been permuted
334 so that those that are not options now come last.)
335
336 OPTSTRING is a string containing the legitimate option characters.
337 If an option character is seen that is not listed in OPTSTRING,
338 return '?' after printing an error message. If you set `opterr' to
339 zero, the error message is suppressed but we still return '?'.
340
341 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
342 so the following text in the same ARGV-element, or the text of the following
343 ARGV-element, is returned in `optarg'. Two colons mean an option that
344 wants an optional arg; if there is text in the current ARGV-element,
345 it is returned in `optarg', otherwise `optarg' is set to zero.
346
347 If OPTSTRING starts with `-' or `+', it requests different methods of
348 handling the non-option ARGV-elements.
349 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
350
351 Long-named options begin with `--' instead of `-'.
352 Their names may be abbreviated as long as the abbreviation is unique
353 or is an exact match for some defined option. If they have an
354 argument, it follows the option name in the same ARGV-element, separated
355 from the option name by a `=', or else the in next ARGV-element.
356 When `getopt' finds a long-named option, it returns 0 if that option's
357 `flag' field is nonzero, the value of the option's `val' field
358 if the `flag' field is zero.
359
360 The elements of ARGV aren't really const, because we permute them.
361 But we pretend they're const in the prototype to be compatible
362 with other systems.
363
364 LONGOPTS is a vector of `struct option' terminated by an
365 element containing a name which is zero.
366
367 LONGIND returns the index in LONGOPT of the long-named option found.
368 It is only valid when a long-named option has been found by the most
369 recent call.
370
371 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
372 long-named options. */
373
374 #if NLS
375 #include "nl_types.h"
376 #endif
377
378 int
_getopt_internal(int argc,char * const * argv,const char * optstring,const struct option * longopts,int * longind,int long_only)379 _getopt_internal ( int argc, char *const *argv, const char *optstring,
380 const struct option *longopts, int *longind,
381 int long_only )
382 {
383 optarg = NULL;
384
385 #if NLS
386 libc_nls_init();
387 #endif
388
389 if (optind == 0)
390 optstring = _getopt_initialize (optstring);
391
392 if (nextchar == NULL || *nextchar == '\0')
393 {
394 /* Advance to the next ARGV-element. */
395
396 if (ordering == PERMUTE)
397 {
398 /* If we have just processed some options following some non-options,
399 exchange them so that the options come first. */
400
401 if (first_nonopt != last_nonopt && last_nonopt != optind)
402 exchange ((char **) argv);
403 else if (last_nonopt != optind)
404 first_nonopt = optind;
405
406 /* Skip any additional non-options
407 and extend the range of non-options previously skipped. */
408
409 while (optind < argc
410 && (argv[optind][0] != '-' || argv[optind][1] == '\0'))
411 optind++;
412 last_nonopt = optind;
413 }
414
415 /* The special ARGV-element `--' means premature end of options.
416 Skip it like a null option,
417 then exchange with previous non-options as if it were an option,
418 then skip everything else like a non-option. */
419
420 if (optind != argc && !strcmp (argv[optind], "--"))
421 {
422 optind++;
423
424 if (first_nonopt != last_nonopt && last_nonopt != optind)
425 exchange ((char **) argv);
426 else if (first_nonopt == last_nonopt)
427 first_nonopt = optind;
428 last_nonopt = argc;
429
430 optind = argc;
431 }
432
433 /* If we have done all the ARGV-elements, stop the scan
434 and back over any non-options that we skipped and permuted. */
435
436 if (optind == argc)
437 {
438 /* Set the next-arg-index to point at the non-options
439 that we previously skipped, so the caller will digest them. */
440 if (first_nonopt != last_nonopt)
441 optind = first_nonopt;
442 return EOF;
443 }
444
445 /* If we have come to a non-option and did not permute it,
446 either stop the scan or describe it to the caller and pass it by. */
447
448 if ((argv[optind][0] != '-' || argv[optind][1] == '\0'))
449 {
450 if (ordering == REQUIRE_ORDER)
451 return EOF;
452 optarg = argv[optind++];
453 return 1;
454 }
455
456 /* We have found another option-ARGV-element.
457 Skip the initial punctuation. */
458
459 nextchar = (argv[optind] + 1
460 + (longopts != NULL && argv[optind][1] == '-'));
461 }
462
463 /* Decode the current option-ARGV-element. */
464
465 /* Check whether the ARGV-element is a long option.
466
467 If long_only and the ARGV-element has the form "-f", where f is
468 a valid short option, don't consider it an abbreviated form of
469 a long option that starts with f. Otherwise there would be no
470 way to give the -f short option.
471
472 On the other hand, if there's a long option "fubar" and
473 the ARGV-element is "-fu", do consider that an abbreviation of
474 the long option, just like "--fu", and not "-f" with arg "u".
475
476 This distinction seems to be the most useful approach. */
477
478 if (longopts != NULL
479 && (argv[optind][1] == '-'
480 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
481 {
482 char *nameend;
483 const struct option *p;
484 const struct option *pfound = NULL;
485 int exact = 0;
486 int ambig = 0;
487 int indfound = 0;
488 int option_index;
489
490 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
491 /* Do nothing. */ ;
492
493 /* Test all long options for either exact match
494 or abbreviated matches. */
495 for (p = longopts, option_index = 0; p->name; p++, option_index++)
496 if (!strncmp (p->name, nextchar, nameend - nextchar))
497 {
498 if (nameend - nextchar == strlen (p->name))
499 {
500 /* Exact match found. */
501 pfound = p;
502 indfound = option_index;
503 exact = 1;
504 break;
505 }
506 else if (pfound == NULL)
507 {
508 /* First nonexact match found. */
509 pfound = p;
510 indfound = option_index;
511 }
512 else
513 /* Second or later nonexact match found. */
514 ambig = 1;
515 }
516
517 if (ambig && !exact)
518 {
519 if (opterr)
520 #if NLS
521 fprintf (stderr,
522 catgets(_libc_cat, GetoptSet, GetoptAmbiguous,
523 "%s: option `%s' is ambiguous\n"),
524 argv[0], argv[optind]);
525 #else
526 fprintf (stderr, "%s: option `%s' is ambiguous\n",
527 argv[0], argv[optind]);
528 #endif
529 nextchar += strlen (nextchar);
530 optind++;
531 return '?';
532 }
533
534 if (pfound != NULL)
535 {
536 option_index = indfound;
537 optind++;
538 if (*nameend)
539 {
540 /* Don't test has_arg with >, because some C compilers don't
541 allow it to be used on enums. */
542 if (pfound->has_arg)
543 optarg = nameend + 1;
544 else
545 {
546 if (opterr)
547 {
548 if (argv[optind - 1][1] == '-')
549 /* --option */
550 #if NLS
551 fprintf (stderr,
552 catgets(_libc_cat, GetoptSet, GetoptNoArgumentsAllowed1,
553 "%s: option `--%s' doesn't allow an argument\n"),
554 argv[0], pfound->name);
555 #else
556 fprintf (stderr,
557 "%s: option `--%s' doesn't allow an argument\n",
558 argv[0], pfound->name);
559 #endif
560 else
561 /* +option or -option */
562 #if NLS
563 fprintf (stderr,
564 catgets(_libc_cat, GetoptSet, GetoptNoArgumentsAllowed2,
565 "%s: option `%c%s' doesn't allow an argument\n"),
566 argv[0], argv[optind - 1][0], pfound->name);
567 #else
568 fprintf (stderr,
569 "%s: option `%c%s' doesn't allow an argument\n",
570 argv[0], argv[optind - 1][0], pfound->name);
571 #endif
572 }
573 nextchar += strlen (nextchar);
574 return '?';
575 }
576 }
577 else if (pfound->has_arg == 1)
578 {
579 if (optind < argc)
580 optarg = argv[optind++];
581 else
582 {
583 if (opterr)
584 #if NLS
585 fprintf (stderr,
586 catgets(_libc_cat, GetoptSet, GetoptRequiresArgument1,
587 "%s: option `%s' requires an argument\n"),
588 argv[0], argv[optind - 1]);
589 #else
590 fprintf (stderr, "%s: option `%s' requires an argument\n",
591 argv[0], argv[optind - 1]);
592 #endif
593 nextchar += strlen (nextchar);
594 return optstring[0] == ':' ? ':' : '?';
595 }
596 }
597 nextchar += strlen (nextchar);
598 if (longind != NULL)
599 *longind = option_index;
600 if (pfound->flag)
601 {
602 *(pfound->flag) = pfound->val;
603 return 0;
604 }
605 return pfound->val;
606 }
607
608 /* Can't find it as a long option. If this is not getopt_long_only,
609 or the option starts with '--' or is not a valid short
610 option, then it's an error.
611 Otherwise interpret it as a short option. */
612 if (!long_only || argv[optind][1] == '-'
613 || my_index (optstring, *nextchar) == NULL)
614 {
615 if (opterr)
616 {
617 if (argv[optind][1] == '-')
618 /* --option */
619 #if NLS
620 fprintf (stderr,
621 catgets(_libc_cat, GetoptSet, GetoptUnrecognized1,
622 "%s: unrecognized option `--%s'\n"),
623 argv[0], nextchar);
624 #else
625 fprintf (stderr, "%s: unrecognized option `--%s'\n",
626 argv[0], nextchar);
627 #endif
628 else
629 /* +option or -option */
630 #if NLS
631 fprintf (stderr,
632 catgets(_libc_cat, GetoptSet, GetoptUnrecognized2,
633 "%s: unrecognized option `%c%s'\n"),
634 argv[0], argv[optind][0], nextchar);
635 #else
636 fprintf (stderr, "%s: unrecognized option `%c%s'\n",
637 argv[0], argv[optind][0], nextchar);
638 #endif
639 }
640 nextchar = (char *) "";
641 optind++;
642 return '?';
643 }
644 }
645
646 /* Look at and handle the next short option-character. */
647
648 {
649 char c = *nextchar++;
650 char *temp = my_index (optstring, c);
651
652 /* Increment `optind' when we start to process its last character. */
653 if (*nextchar == '\0')
654 ++optind;
655
656 if (temp == NULL || c == ':')
657 {
658 if (opterr)
659 {
660 /* 1003.2 specifies the format of this message. */
661 #if NLS
662 fprintf (stderr,
663 catgets(_libc_cat, GetoptSet, GetoptIllegal,
664 "%s: illegal option -- %c\n"),
665 argv[0], c);
666 #else
667 fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
668 #endif
669 }
670 optopt = c;
671 return '?';
672 }
673 if (temp[1] == ':')
674 {
675 if (temp[2] == ':')
676 {
677 /* This is an option that accepts an argument optionally. */
678 if (*nextchar != '\0')
679 {
680 optarg = nextchar;
681 optind++;
682 }
683 else
684 optarg = NULL;
685 nextchar = NULL;
686 }
687 else
688 {
689 /* This is an option that requires an argument. */
690 if (*nextchar != '\0')
691 {
692 optarg = nextchar;
693 /* If we end this ARGV-element by taking the rest as an arg,
694 we must advance to the next element now. */
695 optind++;
696 }
697 else if (optind == argc)
698 {
699 if (opterr)
700 {
701 /* 1003.2 specifies the format of this message. */
702 #if NLS
703 fprintf (stderr,
704 catgets(_libc_cat, GetoptSet,
705 GetoptRequiresArgument2,
706 "%s: option requires an argument -- %c\n"),
707 argv[0], c);
708 #else
709 fprintf (stderr, "%s: option requires an argument -- %c\n",
710 argv[0], c);
711 #endif
712 }
713 optopt = c;
714 if (optstring[0] == ':')
715 c = ':';
716 else
717 c = '?';
718 }
719 else
720 /* We already incremented `optind' once;
721 increment it again when taking next ARGV-elt as argument. */
722 optarg = argv[optind++];
723 nextchar = NULL;
724 }
725 }
726 return c;
727 }
728 }
729
730
731 int
getopt(int argc,char * const * argv,const char * optstring)732 getopt ( int argc, char *const *argv, const char *optstring )
733 {
734 return _getopt_internal (argc, argv, optstring,
735 (const struct option *) 0,
736 (int *) 0,
737 0);
738 }
739
740 #endif /* _LIBC or not __GNU_LIBRARY__. */
741
742 #ifdef TEST
743
744 /* Compile with -DTEST to make an executable for use in testing
745 the above definition of `getopt'. */
746
747 int
main(argc,argv)748 main (argc, argv)
749 int argc;
750 char **argv;
751 {
752 int c;
753 int digit_optind = 0;
754
755 while (1)
756 {
757 int this_option_optind = optind ? optind : 1;
758
759 c = getopt (argc, argv, "abc:d:0123456789");
760 if (c == EOF)
761 break;
762
763 switch (c)
764 {
765 case '0':
766 case '1':
767 case '2':
768 case '3':
769 case '4':
770 case '5':
771 case '6':
772 case '7':
773 case '8':
774 case '9':
775 if (digit_optind != 0 && digit_optind != this_option_optind)
776 printf ("digits occur in two different argv-elements.\n");
777 digit_optind = this_option_optind;
778 printf ("option %c\n", c);
779 break;
780
781 case 'a':
782 printf ("option a\n");
783 break;
784
785 case 'b':
786 printf ("option b\n");
787 break;
788
789 case 'c':
790 printf ("option c with value `%s'\n", optarg);
791 break;
792
793 case '?':
794 break;
795
796 default:
797 printf ("?? getopt returned character code 0%o ??\n", c);
798 }
799 }
800
801 if (optind < argc)
802 {
803 printf ("non-option ARGV-elements: ");
804 while (optind < argc)
805 printf ("%s ", argv[optind++]);
806 printf ("\n");
807 }
808
809 exit (0);
810 }
811
812 #endif /* TEST */
813