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) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001,2002,2003
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
120 char *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. */
135 int 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
141 int __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
150 static char *nextchar;
151
152 /* Callers store zero here to inhibit the error message
153 for unrecognized options. */
154
155 int 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
161 int 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
192 static enum
193 {
194 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
195 } ordering;
196
197 /* Value of POSIXLY_CORRECT environment variable. */
198 static 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
219 extern char *getenv ();
220 #endif
221
222 static char *
my_index(str,chr)223 my_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. */
244 extern 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
256 static int first_nonopt;
257 static 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). */
263 extern int __libc_argc;
264 extern 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 */
271 extern char *__getopt_nonoption_flags;
272
273 static int nonoption_flags_max_len;
274 static 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__
302 static void exchange (char **);
303 #endif
304
305 static void
exchange(argv)306 exchange (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__
388 static const char *_getopt_initialize (int, char *const *, const char *);
389 #endif
390 static const char *
_getopt_initialize(argc,argv,optstring)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
512 int
_getopt_internal(argc,argv,optstring,longopts,longind,long_only)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 _IO_flockfile (stderr);
696
697 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
698 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
699
700 if (_IO_fwide (stderr, 0) > 0)
701 __fwprintf (stderr, L"%s", buf);
702 else
703 fputs (buf, stderr);
704
705 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
706 _IO_funlockfile (stderr);
707
708 free (buf);
709 }
710 #else
711 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
712 argv[0], argv[optind]);
713 #endif
714 }
715 nextchar += strlen (nextchar);
716 optind++;
717 optopt = 0;
718 return '?';
719 }
720
721 if (pfound != NULL)
722 {
723 option_index = indfound;
724 optind++;
725 if (*nameend)
726 {
727 /* Don't test has_arg with >, because some C compilers don't
728 allow it to be used on enums. */
729 if (pfound->has_arg)
730 optarg = nameend + 1;
731 else
732 {
733 if (print_errors)
734 {
735 #if defined _LIBC && defined USE_IN_LIBIO
736 char *buf;
737 int n;
738 #endif
739
740 if (argv[optind - 1][1] == '-')
741 {
742 /* --option */
743 #if defined _LIBC && defined USE_IN_LIBIO
744 n = __asprintf (&buf, _("\
745 %s: option `--%s' doesn't allow an argument\n"),
746 argv[0], pfound->name);
747 #else
748 fprintf (stderr, _("\
749 %s: option `--%s' doesn't allow an argument\n"),
750 argv[0], pfound->name);
751 #endif
752 }
753 else
754 {
755 /* +option or -option */
756 #if defined _LIBC && defined USE_IN_LIBIO
757 n = __asprintf (&buf, _("\
758 %s: option `%c%s' doesn't allow an argument\n"),
759 argv[0], argv[optind - 1][0],
760 pfound->name);
761 #else
762 fprintf (stderr, _("\
763 %s: option `%c%s' doesn't allow an argument\n"),
764 argv[0], argv[optind - 1][0], pfound->name);
765 #endif
766 }
767
768 #if defined _LIBC && defined USE_IN_LIBIO
769 if (n >= 0)
770 {
771 _IO_flockfile (stderr);
772
773 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
774 ((_IO_FILE *) stderr)->_flags2
775 |= _IO_FLAGS2_NOTCANCEL;
776
777 if (_IO_fwide (stderr, 0) > 0)
778 __fwprintf (stderr, L"%s", buf);
779 else
780 fputs (buf, stderr);
781
782 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
783 _IO_funlockfile (stderr);
784
785 free (buf);
786 }
787 #endif
788 }
789
790 nextchar += strlen (nextchar);
791
792 optopt = pfound->val;
793 return '?';
794 }
795 }
796 else if (pfound->has_arg == 1)
797 {
798 if (optind < argc)
799 optarg = argv[optind++];
800 else
801 {
802 if (print_errors)
803 {
804 #if defined _LIBC && defined USE_IN_LIBIO
805 char *buf;
806
807 if (__asprintf (&buf, _("\
808 %s: option `%s' requires an argument\n"),
809 argv[0], argv[optind - 1]) >= 0)
810 {
811 _IO_flockfile (stderr);
812
813 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
814 ((_IO_FILE *) stderr)->_flags2
815 |= _IO_FLAGS2_NOTCANCEL;
816
817 if (_IO_fwide (stderr, 0) > 0)
818 __fwprintf (stderr, L"%s", buf);
819 else
820 fputs (buf, stderr);
821
822 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
823 _IO_funlockfile (stderr);
824
825 free (buf);
826 }
827 #else
828 fprintf (stderr,
829 _("%s: option `%s' requires an argument\n"),
830 argv[0], argv[optind - 1]);
831 #endif
832 }
833 nextchar += strlen (nextchar);
834 optopt = pfound->val;
835 return optstring[0] == ':' ? ':' : '?';
836 }
837 }
838 nextchar += strlen (nextchar);
839 if (longind != NULL)
840 *longind = option_index;
841 if (pfound->flag)
842 {
843 *(pfound->flag) = pfound->val;
844 return 0;
845 }
846 return pfound->val;
847 }
848
849 /* Can't find it as a long option. If this is not getopt_long_only,
850 or the option starts with '--' or is not a valid short
851 option, then it's an error.
852 Otherwise interpret it as a short option. */
853 if (!long_only || argv[optind][1] == '-'
854 || my_index (optstring, *nextchar) == NULL)
855 {
856 if (print_errors)
857 {
858 #if defined _LIBC && defined USE_IN_LIBIO
859 char *buf;
860 int n;
861 #endif
862
863 if (argv[optind][1] == '-')
864 {
865 /* --option */
866 #if defined _LIBC && defined USE_IN_LIBIO
867 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"),
868 argv[0], nextchar);
869 #else
870 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
871 argv[0], nextchar);
872 #endif
873 }
874 else
875 {
876 /* +option or -option */
877 #if defined _LIBC && defined USE_IN_LIBIO
878 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"),
879 argv[0], argv[optind][0], nextchar);
880 #else
881 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
882 argv[0], argv[optind][0], nextchar);
883 #endif
884 }
885
886 #if defined _LIBC && defined USE_IN_LIBIO
887 if (n >= 0)
888 {
889 _IO_flockfile (stderr);
890
891 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
892 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
893
894 if (_IO_fwide (stderr, 0) > 0)
895 __fwprintf (stderr, L"%s", buf);
896 else
897 fputs (buf, stderr);
898
899 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
900 _IO_funlockfile (stderr);
901
902 free (buf);
903 }
904 #endif
905 }
906 nextchar = (char *) "";
907 optind++;
908 optopt = 0;
909 return '?';
910 }
911 }
912
913 /* Look at and handle the next short option-character. */
914
915 {
916 char c = *nextchar++;
917 char *temp = my_index (optstring, c);
918
919 /* Increment `optind' when we start to process its last character. */
920 if (*nextchar == '\0')
921 ++optind;
922
923 if (temp == NULL || c == ':')
924 {
925 if (print_errors)
926 {
927 #if defined _LIBC && defined USE_IN_LIBIO
928 char *buf;
929 int n;
930 #endif
931
932 if (posixly_correct)
933 {
934 /* 1003.2 specifies the format of this message. */
935 #if defined _LIBC && defined USE_IN_LIBIO
936 n = __asprintf (&buf, _("%s: illegal option -- %c\n"),
937 argv[0], c);
938 #else
939 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c);
940 #endif
941 }
942 else
943 {
944 #if defined _LIBC && defined USE_IN_LIBIO
945 n = __asprintf (&buf, _("%s: invalid option -- %c\n"),
946 argv[0], c);
947 #else
948 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c);
949 #endif
950 }
951
952 #if defined _LIBC && defined USE_IN_LIBIO
953 if (n >= 0)
954 {
955 _IO_flockfile (stderr);
956
957 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
958 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
959
960 if (_IO_fwide (stderr, 0) > 0)
961 __fwprintf (stderr, L"%s", buf);
962 else
963 fputs (buf, stderr);
964
965 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
966 _IO_funlockfile (stderr);
967
968 free (buf);
969 }
970 #endif
971 }
972 optopt = c;
973 return '?';
974 }
975 /* Convenience. Treat POSIX -W foo same as long option --foo */
976 if (temp[0] == 'W' && temp[1] == ';')
977 {
978 char *nameend;
979 const struct option *p;
980 const struct option *pfound = NULL;
981 int exact = 0;
982 int ambig = 0;
983 int indfound = 0;
984 int option_index;
985
986 /* This is an option that requires an argument. */
987 if (*nextchar != '\0')
988 {
989 optarg = nextchar;
990 /* If we end this ARGV-element by taking the rest as an arg,
991 we must advance to the next element now. */
992 optind++;
993 }
994 else if (optind == argc)
995 {
996 if (print_errors)
997 {
998 /* 1003.2 specifies the format of this message. */
999 #if defined _LIBC && defined USE_IN_LIBIO
1000 char *buf;
1001
1002 if (__asprintf (&buf,
1003 _("%s: option requires an argument -- %c\n"),
1004 argv[0], c) >= 0)
1005 {
1006 _IO_flockfile (stderr);
1007
1008 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1009 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1010
1011 if (_IO_fwide (stderr, 0) > 0)
1012 __fwprintf (stderr, L"%s", buf);
1013 else
1014 fputs (buf, stderr);
1015
1016 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1017 _IO_funlockfile (stderr);
1018
1019 free (buf);
1020 }
1021 #else
1022 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
1023 argv[0], c);
1024 #endif
1025 }
1026 optopt = c;
1027 if (optstring[0] == ':')
1028 c = ':';
1029 else
1030 c = '?';
1031 return c;
1032 }
1033 else
1034 /* We already incremented `optind' once;
1035 increment it again when taking next ARGV-elt as argument. */
1036 optarg = argv[optind++];
1037
1038 /* optarg is now the argument, see if it's in the
1039 table of longopts. */
1040
1041 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
1042 /* Do nothing. */ ;
1043
1044 /* Test all long options for either exact match
1045 or abbreviated matches. */
1046 for (p = longopts, option_index = 0; p->name; p++, option_index++)
1047 if (!strncmp (p->name, nextchar, nameend - nextchar))
1048 {
1049 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
1050 {
1051 /* Exact match found. */
1052 pfound = p;
1053 indfound = option_index;
1054 exact = 1;
1055 break;
1056 }
1057 else if (pfound == NULL)
1058 {
1059 /* First nonexact match found. */
1060 pfound = p;
1061 indfound = option_index;
1062 }
1063 else
1064 /* Second or later nonexact match found. */
1065 ambig = 1;
1066 }
1067 if (ambig && !exact)
1068 {
1069 if (print_errors)
1070 {
1071 #if defined _LIBC && defined USE_IN_LIBIO
1072 char *buf;
1073
1074 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"),
1075 argv[0], argv[optind]) >= 0)
1076 {
1077 _IO_flockfile (stderr);
1078
1079 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1080 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1081
1082 if (_IO_fwide (stderr, 0) > 0)
1083 __fwprintf (stderr, L"%s", buf);
1084 else
1085 fputs (buf, stderr);
1086
1087 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1088 _IO_funlockfile (stderr);
1089
1090 free (buf);
1091 }
1092 #else
1093 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
1094 argv[0], argv[optind]);
1095 #endif
1096 }
1097 nextchar += strlen (nextchar);
1098 optind++;
1099 return '?';
1100 }
1101 if (pfound != NULL)
1102 {
1103 option_index = indfound;
1104 if (*nameend)
1105 {
1106 /* Don't test has_arg with >, because some C compilers don't
1107 allow it to be used on enums. */
1108 if (pfound->has_arg)
1109 optarg = nameend + 1;
1110 else
1111 {
1112 if (print_errors)
1113 {
1114 #if defined _LIBC && defined USE_IN_LIBIO
1115 char *buf;
1116
1117 if (__asprintf (&buf, _("\
1118 %s: option `-W %s' doesn't allow an argument\n"),
1119 argv[0], pfound->name) >= 0)
1120 {
1121 _IO_flockfile (stderr);
1122
1123 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1124 ((_IO_FILE *) stderr)->_flags2
1125 |= _IO_FLAGS2_NOTCANCEL;
1126
1127 if (_IO_fwide (stderr, 0) > 0)
1128 __fwprintf (stderr, L"%s", buf);
1129 else
1130 fputs (buf, stderr);
1131
1132 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1133 _IO_funlockfile (stderr);
1134
1135 free (buf);
1136 }
1137 #else
1138 fprintf (stderr, _("\
1139 %s: option `-W %s' doesn't allow an argument\n"),
1140 argv[0], pfound->name);
1141 #endif
1142 }
1143
1144 nextchar += strlen (nextchar);
1145 return '?';
1146 }
1147 }
1148 else if (pfound->has_arg == 1)
1149 {
1150 if (optind < argc)
1151 optarg = argv[optind++];
1152 else
1153 {
1154 if (print_errors)
1155 {
1156 #if defined _LIBC && defined USE_IN_LIBIO
1157 char *buf;
1158
1159 if (__asprintf (&buf, _("\
1160 %s: option `%s' requires an argument\n"),
1161 argv[0], argv[optind - 1]) >= 0)
1162 {
1163 _IO_flockfile (stderr);
1164
1165 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1166 ((_IO_FILE *) stderr)->_flags2
1167 |= _IO_FLAGS2_NOTCANCEL;
1168
1169 if (_IO_fwide (stderr, 0) > 0)
1170 __fwprintf (stderr, L"%s", buf);
1171 else
1172 fputs (buf, stderr);
1173
1174 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1175 _IO_funlockfile (stderr);
1176
1177 free (buf);
1178 }
1179 #else
1180 fprintf (stderr,
1181 _("%s: option `%s' requires an argument\n"),
1182 argv[0], argv[optind - 1]);
1183 #endif
1184 }
1185 nextchar += strlen (nextchar);
1186 return optstring[0] == ':' ? ':' : '?';
1187 }
1188 }
1189 nextchar += strlen (nextchar);
1190 if (longind != NULL)
1191 *longind = option_index;
1192 if (pfound->flag)
1193 {
1194 *(pfound->flag) = pfound->val;
1195 return 0;
1196 }
1197 return pfound->val;
1198 }
1199 nextchar = NULL;
1200 return 'W'; /* Let the application handle it. */
1201 }
1202 if (temp[1] == ':')
1203 {
1204 if (temp[2] == ':')
1205 {
1206 /* This is an option that accepts an argument optionally. */
1207 if (*nextchar != '\0')
1208 {
1209 optarg = nextchar;
1210 optind++;
1211 }
1212 else
1213 optarg = NULL;
1214 nextchar = NULL;
1215 }
1216 else
1217 {
1218 /* This is an option that requires an argument. */
1219 if (*nextchar != '\0')
1220 {
1221 optarg = nextchar;
1222 /* If we end this ARGV-element by taking the rest as an arg,
1223 we must advance to the next element now. */
1224 optind++;
1225 }
1226 else if (optind == argc)
1227 {
1228 if (print_errors)
1229 {
1230 /* 1003.2 specifies the format of this message. */
1231 #if defined _LIBC && defined USE_IN_LIBIO
1232 char *buf;
1233
1234 if (__asprintf (&buf, _("\
1235 %s: option requires an argument -- %c\n"),
1236 argv[0], c) >= 0)
1237 {
1238 _IO_flockfile (stderr);
1239
1240 int old_flags2 = ((_IO_FILE *) stderr)->_flags2;
1241 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL;
1242
1243 if (_IO_fwide (stderr, 0) > 0)
1244 __fwprintf (stderr, L"%s", buf);
1245 else
1246 fputs (buf, stderr);
1247
1248 ((_IO_FILE *) stderr)->_flags2 = old_flags2;
1249 _IO_funlockfile (stderr);
1250
1251 free (buf);
1252 }
1253 #else
1254 fprintf (stderr,
1255 _("%s: option requires an argument -- %c\n"),
1256 argv[0], c);
1257 #endif
1258 }
1259 optopt = c;
1260 if (optstring[0] == ':')
1261 c = ':';
1262 else
1263 c = '?';
1264 }
1265 else
1266 /* We already incremented `optind' once;
1267 increment it again when taking next ARGV-elt as argument. */
1268 optarg = argv[optind++];
1269 nextchar = NULL;
1270 }
1271 }
1272 return c;
1273 }
1274 }
1275
1276 int
getopt(argc,argv,optstring)1277 getopt (argc, argv, optstring)
1278 int argc;
1279 char *const *argv;
1280 const char *optstring;
1281 {
1282 return _getopt_internal (argc, argv, optstring,
1283 (const struct option *) 0,
1284 (int *) 0,
1285 0);
1286 }
1287
1288 #endif /* Not ELIDE_CODE. */
1289
1290 #ifdef TEST
1291
1292 /* Compile with -DTEST to make an executable for use in testing
1293 the above definition of `getopt'. */
1294
1295 int
main(argc,argv)1296 main (argc, argv)
1297 int argc;
1298 char **argv;
1299 {
1300 int c;
1301 int digit_optind = 0;
1302
1303 while (1)
1304 {
1305 int this_option_optind = optind ? optind : 1;
1306
1307 c = getopt (argc, argv, "abc:d:0123456789");
1308 if (c == -1)
1309 break;
1310
1311 switch (c)
1312 {
1313 case '0':
1314 case '1':
1315 case '2':
1316 case '3':
1317 case '4':
1318 case '5':
1319 case '6':
1320 case '7':
1321 case '8':
1322 case '9':
1323 if (digit_optind != 0 && digit_optind != this_option_optind)
1324 printf ("digits occur in two different argv-elements.\n");
1325 digit_optind = this_option_optind;
1326 printf ("option %c\n", c);
1327 break;
1328
1329 case 'a':
1330 printf ("option a\n");
1331 break;
1332
1333 case 'b':
1334 printf ("option b\n");
1335 break;
1336
1337 case 'c':
1338 printf ("option c with value `%s'\n", optarg);
1339 break;
1340
1341 case '?':
1342 break;
1343
1344 default:
1345 printf ("?? getopt returned character code 0%o ??\n", c);
1346 }
1347 }
1348
1349 if (optind < argc)
1350 {
1351 printf ("non-option ARGV-elements: ");
1352 while (optind < argc)
1353 printf ("%s ", argv[optind++]);
1354 printf ("\n");
1355 }
1356
1357 exit (0);
1358 }
1359
1360 #endif /* TEST */
1361