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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
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 defined HAVE_LIBINTL_H || defined _LIBC
81 # include <libintl.h>
82 # ifndef _
83 # define _(msgid) gettext (msgid)
84 # endif
85 # else
86 # define _(msgid) (msgid)
87 # endif
88 #endif
89
90 /* This version of `getopt' appears to the caller like standard Unix `getopt'
91 but it behaves differently for the user, since it allows the user
92 to intersperse the options with the other arguments.
93
94 As `getopt' works, it permutes the elements of ARGV so that,
95 when it is done, all the options precede everything else. Thus
96 all application programs are extended to handle flexible argument order.
97
98 Setting the environment variable POSIXLY_CORRECT disables permutation.
99 Then the behavior is completely standard.
100
101 GNU application programs can use a third alternative mode in which
102 they can distinguish the relative order of options and other arguments. */
103
104 #include "getopt.h"
105
106 /* For communication from `getopt' to the caller.
107 When `getopt' finds an option that takes an argument,
108 the argument value is returned here.
109 Also, when `ordering' is RETURN_IN_ORDER,
110 each non-option ARGV-element is returned here. */
111
112 char *optarg;
113
114 /* Index in ARGV of the next element to be scanned.
115 This is used for communication to and from the caller
116 and for communication between successive calls to `getopt'.
117
118 On entry to `getopt', zero means this is the first call; initialize.
119
120 When `getopt' returns -1, this is the index of the first of the
121 non-option elements that the caller should itself scan.
122
123 Otherwise, `optind' communicates from one call to the next
124 how much of ARGV has been scanned so far. */
125
126 /* 1003.2 says this must be 1 before any call. */
127 int optind = 1;
128
129 /* Formerly, initialization of getopt depended on optind==0, which
130 causes problems with re-calling getopt as programs generally don't
131 know that. */
132
133 int __getopt_initialized;
134
135 /* The next char to be scanned in the option-element
136 in which the last option character we returned was found.
137 This allows us to pick up the scan where we left off.
138
139 If this is zero, or a null string, it means resume the scan
140 by advancing to the next ARGV-element. */
141
142 static char *nextchar;
143
144 /* Callers store zero here to inhibit the error message
145 for unrecognized options. */
146
147 int opterr = 1;
148
149 /* Set to an option character which was unrecognized.
150 This must be initialized on some systems to avoid linking in the
151 system's own getopt implementation. */
152
153 int optopt = '?';
154
155 /* Describe how to deal with options that follow non-option ARGV-elements.
156
157 If the caller did not specify anything,
158 the default is REQUIRE_ORDER if the environment variable
159 POSIXLY_CORRECT is defined, PERMUTE otherwise.
160
161 REQUIRE_ORDER means don't recognize them as options;
162 stop option processing when the first non-option is seen.
163 This is what Unix does.
164 This mode of operation is selected by either setting the environment
165 variable POSIXLY_CORRECT, or using `+' as the first character
166 of the list of option characters.
167
168 PERMUTE is the default. We permute the contents of ARGV as we scan,
169 so that eventually all the non-options are at the end. This allows options
170 to be given in any order, even with programs that were not written to
171 expect this.
172
173 RETURN_IN_ORDER is an option available to programs that were written
174 to expect options and other ARGV-elements in any order and that care about
175 the ordering of the two. We describe each non-option ARGV-element
176 as if it were the argument of an option with character code 1.
177 Using `-' as the first character of the list of option characters
178 selects this mode of operation.
179
180 The special argument `--' forces an end of option-scanning regardless
181 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
182 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
183
184 static enum {
185 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
186 } ordering;
187
188 /* Value of POSIXLY_CORRECT environment variable. */
189 static char *posixly_correct;
190
191 #ifdef __GNU_LIBRARY__
192 /* We want to avoid inclusion of string.h with non-GNU libraries
193 because there are many ways it can cause trouble.
194 On some systems, it contains special magic macros that don't work
195 in GCC. */
196 # include <string.h>
197 # define my_index strchr
198 #else
199
200 # if HAVE_STRING_H
201 # include <string.h>
202 # else
203 # include <strings.h>
204 # endif
205
206 /* Avoid depending on library functions or files
207 whose names are inconsistent. */
208
209 #ifndef getenv
210 extern char *getenv();
211 #endif
212
213 static char *
214 my_index(str, chr)
215 const char *str;
216 int chr;
217 {
218 while (*str) {
219 if (*str == chr)
220 return (char *)str;
221 str++;
222 }
223 return 0;
224 }
225
226 /* If using GCC, we can safely declare strlen this way.
227 If not using GCC, it is ok not to declare it. */
228 #ifdef __GNUC__
229 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
230 That was relevant to code that was here before. */
231 # if (!defined __STDC__ || !__STDC__) && !defined strlen
232 /* gcc with -traditional declares the built-in strlen to return int,
233 and has done so at least since version 2.4.5. -- rms. */
234 extern int strlen(const char *);
235 # endif /* not __STDC__ */
236 #endif /* __GNUC__ */
237
238 #endif /* not __GNU_LIBRARY__ */
239
240 /* Handle permutation of arguments. */
241
242 /* Describe the part of ARGV that contains non-options that have
243 been skipped. `first_nonopt' is the index in ARGV of the first of them;
244 `last_nonopt' is the index after the last of them. */
245
246 static int first_nonopt;
247 static int last_nonopt;
248
249 #ifdef _LIBC
250 /* Stored original parameters.
251 XXX This is no good solution. We should rather copy the args so
252 that we can compare them later. But we must not use malloc(3). */
253 extern int __libc_argc;
254 extern char **__libc_argv;
255
256 /* Bash 2.0 gives us an environment variable containing flags
257 indicating ARGV elements that should not be considered arguments. */
258
259 # ifdef USE_NONOPTION_FLAGS
260 /* Defined in getopt_init.c */
261 extern char *__getopt_nonoption_flags;
262
263 static int nonoption_flags_max_len;
264 static int nonoption_flags_len;
265 # endif
266
267 # ifdef USE_NONOPTION_FLAGS
268 # define SWAP_FLAGS(ch1, ch2) \
269 if (nonoption_flags_len > 0) \
270 { \
271 char __tmp = __getopt_nonoption_flags[ch1]; \
272 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
273 __getopt_nonoption_flags[ch2] = __tmp; \
274 }
275 # else
276 # define SWAP_FLAGS(ch1, ch2)
277 # endif
278 #else /* !_LIBC */
279 # define SWAP_FLAGS(ch1, ch2)
280 #endif /* _LIBC */
281
282 /* Exchange two adjacent subsequences of ARGV.
283 One subsequence is elements [first_nonopt,last_nonopt)
284 which contains all the non-options that have been skipped so far.
285 The other is elements [last_nonopt,optind), which contains all
286 the options processed since those non-options were skipped.
287
288 `first_nonopt' and `last_nonopt' are relocated so that they describe
289 the new indices of the non-options in ARGV after they are moved. */
290
291 #if defined __STDC__ && __STDC__
292 static void exchange(char **);
293 #endif
294
295 static void
296 exchange(argv)
297 char **argv;
298 {
299 int bottom = first_nonopt;
300 int middle = last_nonopt;
301 int top = optind;
302 char *tem;
303
304 /* Exchange the shorter segment with the far end of the longer segment.
305 That puts the shorter segment into the right place.
306 It leaves the longer segment in the right place overall,
307 but it consists of two parts that need to be swapped next. */
308
309 #if defined _LIBC && defined USE_NONOPTION_FLAGS
310 /* First make sure the handling of the `__getopt_nonoption_flags'
311 string can work normally. Our top argument must be in the range
312 of the string. */
313 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) {
314 /* We must extend the array. The user plays games with us and
315 presents new arguments. */
316 char *new_str = malloc(top + 1);
317
318 if (new_str == NULL)
319 nonoption_flags_len = nonoption_flags_max_len = 0;
320 else {
321 memset(__mempcpy(new_str, __getopt_nonoption_flags, nonoption_flags_max_len), '\0', top + 1 - nonoption_flags_max_len);
322 nonoption_flags_max_len = top + 1;
323 __getopt_nonoption_flags = new_str;
324 }
325 }
326 #endif
327
328 while (top > middle && middle > bottom) {
329 if (top - middle > middle - bottom) {
330 /* Bottom segment is the short one. */
331 int len = middle - bottom;
332 register int i;
333
334 /* Swap it with the top part of the top segment. */
335 for (i = 0; i < len; i++) {
336 tem = argv[bottom + i];
337 argv[bottom + i] = argv[top - (middle - bottom) + i];
338 argv[top - (middle - bottom) + i] = tem;
339 SWAP_FLAGS(bottom + i, top - (middle - bottom) + i);
340 }
341 /* Exclude the moved bottom segment from further swapping. */
342 top -= len;
343 } else {
344 /* Top segment is the short one. */
345 int len = top - middle;
346 register int i;
347
348 /* Swap it with the bottom part of the bottom segment. */
349 for (i = 0; i < len; i++) {
350 tem = argv[bottom + i];
351 argv[bottom + i] = argv[middle + i];
352 argv[middle + i] = tem;
353 SWAP_FLAGS(bottom + i, middle + i);
354 }
355 /* Exclude the moved top segment from further swapping. */
356 bottom += len;
357 }
358 }
359
360 /* Update records for the slots the non-options now occupy. */
361
362 first_nonopt += (optind - last_nonopt);
363 last_nonopt = optind;
364 }
365
366 /* Initialize the internal data when the first call is made. */
367
368 #if defined __STDC__ && __STDC__
369 static const char *_getopt_initialize(int, char *const *, const char *);
370 #endif
371 static const char *
372 _getopt_initialize(argc, argv, optstring)
373 int argc;
374 char *const *argv;
375 const char *optstring;
376 {
377 /* Start processing options with ARGV-element 1 (since ARGV-element 0
378 is the program name); the sequence of previously skipped
379 non-option ARGV-elements is empty. */
380
381 first_nonopt = last_nonopt = optind;
382
383 nextchar = NULL;
384
385 posixly_correct = getenv("POSIXLY_CORRECT");
386
387 /* Determine how to handle the ordering of options and nonoptions. */
388
389 if (optstring[0] == '-') {
390 ordering = RETURN_IN_ORDER;
391 ++optstring;
392 } else if (optstring[0] == '+') {
393 ordering = REQUIRE_ORDER;
394 ++optstring;
395 } else if (posixly_correct != NULL)
396 ordering = REQUIRE_ORDER;
397 else
398 ordering = PERMUTE;
399
400 #if defined _LIBC && defined USE_NONOPTION_FLAGS
401 if (posixly_correct == NULL && argc == __libc_argc && argv == __libc_argv) {
402 if (nonoption_flags_max_len == 0) {
403 if (__getopt_nonoption_flags == NULL || __getopt_nonoption_flags[0] == '\0')
404 nonoption_flags_max_len = -1;
405 else {
406 const char *orig_str = __getopt_nonoption_flags;
407 int len = nonoption_flags_max_len = strlen(orig_str);
408
409 if (nonoption_flags_max_len < argc)
410 nonoption_flags_max_len = argc;
411 __getopt_nonoption_flags = (char *)malloc(nonoption_flags_max_len);
412 if (__getopt_nonoption_flags == NULL)
413 nonoption_flags_max_len = -1;
414 else
415 memset(__mempcpy(__getopt_nonoption_flags, orig_str, len), '\0', nonoption_flags_max_len - len);
416 }
417 }
418 nonoption_flags_len = nonoption_flags_max_len;
419 } else
420 nonoption_flags_len = 0;
421 #endif
422
423 return optstring;
424 }
425
426 /* Scan elements of ARGV (whose length is ARGC) for option characters
427 given in OPTSTRING.
428
429 If an element of ARGV starts with '-', and is not exactly "-" or "--",
430 then it is an option element. The characters of this element
431 (aside from the initial '-') are option characters. If `getopt'
432 is called repeatedly, it returns successively each of the option characters
433 from each of the option elements.
434
435 If `getopt' finds another option character, it returns that character,
436 updating `optind' and `nextchar' so that the next call to `getopt' can
437 resume the scan with the following option character or ARGV-element.
438
439 If there are no more option characters, `getopt' returns -1.
440 Then `optind' is the index in ARGV of the first ARGV-element
441 that is not an option. (The ARGV-elements have been permuted
442 so that those that are not options now come last.)
443
444 OPTSTRING is a string containing the legitimate option characters.
445 If an option character is seen that is not listed in OPTSTRING,
446 return '?' after printing an error message. If you set `opterr' to
447 zero, the error message is suppressed but we still return '?'.
448
449 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
450 so the following text in the same ARGV-element, or the text of the following
451 ARGV-element, is returned in `optarg'. Two colons mean an option that
452 wants an optional arg; if there is text in the current ARGV-element,
453 it is returned in `optarg', otherwise `optarg' is set to zero.
454
455 If OPTSTRING starts with `-' or `+', it requests different methods of
456 handling the non-option ARGV-elements.
457 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
458
459 Long-named options begin with `--' instead of `-'.
460 Their names may be abbreviated as long as the abbreviation is unique
461 or is an exact match for some defined option. If they have an
462 argument, it follows the option name in the same ARGV-element, separated
463 from the option name by a `=', or else the in next ARGV-element.
464 When `getopt' finds a long-named option, it returns 0 if that option's
465 `flag' field is nonzero, the value of the option's `val' field
466 if the `flag' field is zero.
467
468 The elements of ARGV aren't really const, because we permute them.
469 But we pretend they're const in the prototype to be compatible
470 with other systems.
471
472 LONGOPTS is a vector of `struct option' terminated by an
473 element containing a name which is zero.
474
475 LONGIND returns the index in LONGOPT of the long-named option found.
476 It is only valid when a long-named option has been found by the most
477 recent call.
478
479 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
480 long-named options. */
481
482 int
483 _getopt_internal(argc, argv, optstring, longopts, longind, long_only)
484 int argc;
485 char *const *argv;
486 const char *optstring;
487 const struct option *longopts;
488 int *longind;
489 int long_only;
490 {
491 int print_errors = opterr;
492
493 if (optstring[0] == ':')
494 print_errors = 0;
495
496 if (argc < 1)
497 return -1;
498
499 optarg = NULL;
500
501 if (optind == 0 || !__getopt_initialized) {
502 if (optind == 0)
503 optind = 1; /* Don't scan ARGV[0], the program name. */
504 optstring = _getopt_initialize(argc, argv, optstring);
505 __getopt_initialized = 1;
506 }
507
508 /* Test whether ARGV[optind] points to a non-option argument.
509 Either it does not have option syntax, or there is an environment flag
510 from the shell indicating it is not an option. The later information
511 is only used when the used in the GNU libc. */
512 #if defined _LIBC && defined USE_NONOPTION_FLAGS
513 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
514 || (optind < nonoption_flags_len \
515 && __getopt_nonoption_flags[optind] == '1'))
516 #else
517 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
518 #endif
519
520 if (nextchar == NULL || *nextchar == '\0') {
521 /* Advance to the next ARGV-element. */
522
523 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
524 moved back by the user (who may also have changed the arguments). */
525 if (last_nonopt > optind)
526 last_nonopt = optind;
527 if (first_nonopt > optind)
528 first_nonopt = optind;
529
530 if (ordering == PERMUTE) {
531 /* If we have just processed some options following some non-options,
532 exchange them so that the options come first. */
533
534 if (first_nonopt != last_nonopt && last_nonopt != optind)
535 exchange((char **)argv);
536 else if (last_nonopt != optind)
537 first_nonopt = optind;
538
539 /* Skip any additional non-options
540 and extend the range of non-options previously skipped. */
541
542 while (optind < argc && NONOPTION_P)
543 optind++;
544 last_nonopt = optind;
545 }
546
547 /* The special ARGV-element `--' means premature end of options.
548 Skip it like a null option,
549 then exchange with previous non-options as if it were an option,
550 then skip everything else like a non-option. */
551
552 if (optind != argc && !strcmp(argv[optind], "--")) {
553 optind++;
554
555 if (first_nonopt != last_nonopt && last_nonopt != optind)
556 exchange((char **)argv);
557 else if (first_nonopt == last_nonopt)
558 first_nonopt = optind;
559 last_nonopt = argc;
560
561 optind = argc;
562 }
563
564 /* If we have done all the ARGV-elements, stop the scan
565 and back over any non-options that we skipped and permuted. */
566
567 if (optind == argc) {
568 /* Set the next-arg-index to point at the non-options
569 that we previously skipped, so the caller will digest them. */
570 if (first_nonopt != last_nonopt)
571 optind = first_nonopt;
572 return -1;
573 }
574
575 /* If we have come to a non-option and did not permute it,
576 either stop the scan or describe it to the caller and pass it by. */
577
578 if (NONOPTION_P) {
579 if (ordering == REQUIRE_ORDER)
580 return -1;
581 optarg = argv[optind++];
582 return 1;
583 }
584
585 /* We have found another option-ARGV-element.
586 Skip the initial punctuation. */
587
588 nextchar = (argv[optind] + 1 + (longopts != NULL && argv[optind][1] == '-'));
589 }
590
591 /* Decode the current option-ARGV-element. */
592
593 /* Check whether the ARGV-element is a long option.
594
595 If long_only and the ARGV-element has the form "-f", where f is
596 a valid short option, don't consider it an abbreviated form of
597 a long option that starts with f. Otherwise there would be no
598 way to give the -f short option.
599
600 On the other hand, if there's a long option "fubar" and
601 the ARGV-element is "-fu", do consider that an abbreviation of
602 the long option, just like "--fu", and not "-f" with arg "u".
603
604 This distinction seems to be the most useful approach. */
605
606 if (longopts != NULL && (argv[optind][1] == '-' || (long_only && (argv[optind][2] || !my_index(optstring, argv[optind][1]))))) {
607 char *nameend;
608 const struct option *p;
609 const struct option *pfound = NULL;
610 int exact = 0;
611 int ambig = 0;
612 int indfound = -1;
613 int option_index;
614
615 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
616 /* Do nothing. */ ;
617
618 /* Test all long options for either exact match
619 or abbreviated matches. */
620 for (p = longopts, option_index = 0; p->name; p++, option_index++)
621 if (!strncmp(p->name, nextchar, nameend - nextchar)) {
622 if ((unsigned int)(nameend - nextchar)
623 == (unsigned int)strlen(p->name)) {
624 /* Exact match found. */
625 pfound = p;
626 indfound = option_index;
627 exact = 1;
628 break;
629 } else if (pfound == NULL) {
630 /* First nonexact match found. */
631 pfound = p;
632 indfound = option_index;
633 } else if (long_only || pfound->has_arg != p->has_arg || pfound->flag != p->flag || pfound->val != p->val)
634 /* Second or later nonexact match found. */
635 ambig = 1;
636 }
637
638 if (ambig && !exact) {
639 if (print_errors)
640 fprintf(stderr, _("%s: option `%s' is ambiguous\n"), argv[0], argv[optind]);
641 nextchar += strlen(nextchar);
642 optind++;
643 optopt = 0;
644 return '?';
645 }
646
647 if (pfound != NULL) {
648 option_index = indfound;
649 optind++;
650 if (*nameend) {
651 /* Don't test has_arg with >, because some C compilers don't
652 allow it to be used on enums. */
653 if (pfound->has_arg)
654 optarg = nameend + 1;
655 else {
656 if (print_errors) {
657 if (argv[optind - 1][1] == '-')
658 /* --option */
659 fprintf(stderr, _("%s: option `--%s' doesn't allow an argument\n"), argv[0], pfound->name);
660 else
661 /* +option or -option */
662 fprintf(stderr, _("%s: option `%c%s' doesn't allow an argument\n"), argv[0], argv[optind - 1][0], pfound->name);
663 }
664
665 nextchar += strlen(nextchar);
666
667 optopt = pfound->val;
668 return '?';
669 }
670 } else if (pfound->has_arg == 1) {
671 if (optind < argc)
672 optarg = argv[optind++];
673 else {
674 if (print_errors)
675 fprintf(stderr, _("%s: option `%s' requires an argument\n"), argv[0], argv[optind - 1]);
676 nextchar += strlen(nextchar);
677 optopt = pfound->val;
678 return optstring[0] == ':' ? ':' : '?';
679 }
680 }
681 nextchar += strlen(nextchar);
682 if (longind != NULL)
683 *longind = option_index;
684 if (pfound->flag) {
685 *(pfound->flag) = pfound->val;
686 return 0;
687 }
688 return pfound->val;
689 }
690
691 /* Can't find it as a long option. If this is not getopt_long_only,
692 or the option starts with '--' or is not a valid short
693 option, then it's an error.
694 Otherwise interpret it as a short option. */
695 if (!long_only || argv[optind][1] == '-' || my_index(optstring, *nextchar) == NULL) {
696 if (print_errors) {
697 if (argv[optind][1] == '-')
698 /* --option */
699 fprintf(stderr, _("%s: unrecognized option `--%s'\n"), argv[0], nextchar);
700 else
701 /* +option or -option */
702 fprintf(stderr, _("%s: unrecognized option `%c%s'\n"), argv[0], argv[optind][0], nextchar);
703 }
704 nextchar = (char *)"";
705 optind++;
706 optopt = 0;
707 return '?';
708 }
709 }
710
711 /* Look at and handle the next short option-character. */
712
713 {
714 char c = *nextchar++;
715 char *temp = my_index(optstring, c);
716
717 /* Increment `optind' when we start to process its last character. */
718 if (*nextchar == '\0')
719 ++optind;
720
721 if (temp == NULL || c == ':') {
722 if (print_errors) {
723 if (posixly_correct)
724 /* 1003.2 specifies the format of this message. */
725 fprintf(stderr, _("%s: illegal option -- %c\n"), argv[0], c);
726 else
727 fprintf(stderr, _("%s: invalid option -- %c\n"), argv[0], c);
728 }
729 optopt = c;
730 return '?';
731 }
732 /* Convenience. Treat POSIX -W foo same as long option --foo */
733 if (temp[0] == 'W' && temp[1] == ';') {
734 char *nameend;
735 const struct option *p;
736 const struct option *pfound = NULL;
737 int exact = 0;
738 int ambig = 0;
739 int indfound = 0;
740 int option_index;
741
742 /* This is an option that requires an argument. */
743 if (*nextchar != '\0') {
744 optarg = nextchar;
745 /* If we end this ARGV-element by taking the rest as an arg,
746 we must advance to the next element now. */
747 optind++;
748 } else if (optind == argc) {
749 if (print_errors) {
750 /* 1003.2 specifies the format of this message. */
751 fprintf(stderr, _("%s: option requires an argument -- %c\n"), argv[0], c);
752 }
753 optopt = c;
754 if (optstring[0] == ':')
755 c = ':';
756 else
757 c = '?';
758 return c;
759 } else
760 /* We already incremented `optind' once;
761 increment it again when taking next ARGV-elt as argument. */
762 optarg = argv[optind++];
763
764 /* optarg is now the argument, see if it's in the
765 table of longopts. */
766
767 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
768 /* Do nothing. */ ;
769
770 /* Test all long options for either exact match
771 or abbreviated matches. */
772 for (p = longopts, option_index = 0; p->name; p++, option_index++)
773 if (!strncmp(p->name, nextchar, nameend - nextchar)) {
774 if ((unsigned int)(nameend - nextchar) == strlen(p->name)) {
775 /* Exact match found. */
776 pfound = p;
777 indfound = option_index;
778 exact = 1;
779 break;
780 } else if (pfound == NULL) {
781 /* First nonexact match found. */
782 pfound = p;
783 indfound = option_index;
784 } else
785 /* Second or later nonexact match found. */
786 ambig = 1;
787 }
788 if (ambig && !exact) {
789 if (print_errors)
790 fprintf(stderr, _("%s: option `-W %s' is ambiguous\n"), argv[0], argv[optind]);
791 nextchar += strlen(nextchar);
792 optind++;
793 return '?';
794 }
795 if (pfound != NULL) {
796 option_index = indfound;
797 if (*nameend) {
798 /* Don't test has_arg with >, because some C compilers don't
799 allow it to be used on enums. */
800 if (pfound->has_arg)
801 optarg = nameend + 1;
802 else {
803 if (print_errors)
804 fprintf(stderr, _("\
805 %s: option `-W %s' doesn't allow an argument\n"), argv[0], pfound->name);
806
807 nextchar += strlen(nextchar);
808 return '?';
809 }
810 } else if (pfound->has_arg == 1) {
811 if (optind < argc)
812 optarg = argv[optind++];
813 else {
814 if (print_errors)
815 fprintf(stderr, _("%s: option `%s' requires an argument\n"), argv[0], argv[optind - 1]);
816 nextchar += strlen(nextchar);
817 return optstring[0] == ':' ? ':' : '?';
818 }
819 }
820 nextchar += strlen(nextchar);
821 if (longind != NULL)
822 *longind = option_index;
823 if (pfound->flag) {
824 *(pfound->flag) = pfound->val;
825 return 0;
826 }
827 return pfound->val;
828 }
829 nextchar = NULL;
830 return 'W'; /* Let the application handle it. */
831 }
832 if (temp[1] == ':') {
833 if (temp[2] == ':') {
834 /* This is an option that accepts an argument optionally. */
835 if (*nextchar != '\0') {
836 optarg = nextchar;
837 optind++;
838 } else
839 optarg = NULL;
840 nextchar = NULL;
841 } else {
842 /* This is an option that requires an argument. */
843 if (*nextchar != '\0') {
844 optarg = nextchar;
845 /* If we end this ARGV-element by taking the rest as an arg,
846 we must advance to the next element now. */
847 optind++;
848 } else if (optind == argc) {
849 if (print_errors) {
850 /* 1003.2 specifies the format of this message. */
851 fprintf(stderr, _("%s: option requires an argument -- %c\n"), argv[0], c);
852 }
853 optopt = c;
854 if (optstring[0] == ':')
855 c = ':';
856 else
857 c = '?';
858 } else
859 /* We already incremented `optind' once;
860 increment it again when taking next ARGV-elt as argument. */
861 optarg = argv[optind++];
862 nextchar = NULL;
863 }
864 }
865 return c;
866 }
867 }
868
869 int
870 getopt(argc, argv, optstring)
871 int argc;
872 char *const *argv;
873 const char *optstring;
874 {
875 return _getopt_internal(argc, argv, optstring, (const struct option *)0, (int *)0, 0);
876 }
877
878 #endif /* Not ELIDE_CODE. */
879
880 #ifdef TEST
881
882 /* Compile with -DTEST to make an executable for use in testing
883 the above definition of `getopt'. */
884
885 int
886 main(argc, argv)
887 int argc;
888 char **argv;
889 {
890 int c;
891 int digit_optind = 0;
892
893 while (1) {
894 int this_option_optind = optind ? optind : 1;
895
896 c = getopt(argc, argv, "abc:d:0123456789");
897 if (c == -1)
898 break;
899
900 switch (c) {
901 case '0':
902 case '1':
903 case '2':
904 case '3':
905 case '4':
906 case '5':
907 case '6':
908 case '7':
909 case '8':
910 case '9':
911 if (digit_optind != 0 && digit_optind != this_option_optind)
912 printf("digits occur in two different argv-elements.\n");
913 digit_optind = this_option_optind;
914 printf("option %c\n", c);
915 break;
916
917 case 'a':
918 printf("option a\n");
919 break;
920
921 case 'b':
922 printf("option b\n");
923 break;
924
925 case 'c':
926 printf("option c with value `%s'\n", optarg);
927 break;
928
929 case '?':
930 break;
931
932 default:
933 printf("?? getopt returned character code 0%o ??\n", c);
934 }
935 }
936
937 if (optind < argc) {
938 printf("non-option ARGV-elements: ");
939 while (optind < argc)
940 printf("%s ", argv[optind++]);
941 printf("\n");
942 }
943
944 exit(0);
945 }
946
947 #endif /* TEST */