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