ce188d4d |
1 | /* |
2 | NOTE: |
3 | I cannot get the vanilla getopt code to work (i.e. compile only what |
4 | is needed and not duplicate symbols found in the standard library) |
5 | on all the platforms that FLAC supports. In particular the gating |
6 | of code with the ELIDE_CODE #define is not accurate enough on systems |
7 | that are POSIX but not glibc. If someone has a patch that works on |
8 | GNU/Linux, Darwin, AND Solaris please submit it on the project page: |
9 | https://sourceforge.net/p/flac/patches/ |
10 | |
11 | In the meantime I have munged the global symbols and removed gates |
12 | around code, while at the same time trying to touch the original as |
13 | little as possible. |
14 | */ |
15 | /* Getopt for GNU. |
16 | NOTE: getopt is now part of the C library, so if you don't know what |
17 | "Keep this file name-space clean" means, talk to drepper@gnu.org |
18 | before changing it! |
19 | |
20 | Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 |
21 | Free Software Foundation, Inc. |
22 | |
23 | The GNU C Library is free software; you can redistribute it and/or |
24 | modify it under the terms of the GNU Library General Public License as |
25 | published by the Free Software Foundation; either version 2 of the |
26 | License, or (at your option) any later version. |
27 | |
28 | The GNU C Library is distributed in the hope that it will be useful, |
29 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
30 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
31 | Library General Public License for more details. |
32 | |
33 | You should have received a copy of the GNU Library General Public |
34 | License along with the GNU C Library; see the file COPYING.LIB. If not, |
35 | write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
36 | Boston, MA 02110-1301, USA. */ |
37 | \f |
38 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. |
39 | Ditto for AIX 3.2 and <stdlib.h>. */ |
40 | #ifndef _NO_PROTO |
41 | # define _NO_PROTO |
42 | #endif |
43 | |
44 | #ifdef HAVE_CONFIG_H |
45 | # include <config.h> |
46 | #endif |
47 | |
48 | #if !defined __STDC__ || !__STDC__ |
49 | /* This is a separate conditional since some stdc systems |
50 | reject `defined (const)'. */ |
51 | # ifndef const |
52 | # define const |
53 | # endif |
54 | #endif |
55 | |
56 | #include <stdio.h> |
57 | |
58 | /* Comment out all this code if we are using the GNU C Library, and are not |
59 | actually compiling the library itself. This code is part of the GNU C |
60 | Library, but also included in many other GNU distributions. Compiling |
61 | and linking in this code is a waste when using the GNU C library |
62 | (especially if it is a shared library). Rather than having every GNU |
63 | program understand `configure --with-gnu-libc' and omit the object files, |
64 | it is simpler to just do this in the source for each such file. */ |
65 | |
66 | #define GETOPT_INTERFACE_VERSION 2 |
67 | #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 |
68 | # include <gnu-versions.h> |
69 | # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION |
70 | # define ELIDE_CODE |
71 | # endif |
72 | #endif |
73 | |
74 | #if 1 |
75 | /*[JEC] was:#ifndef ELIDE_CODE*/ |
76 | |
77 | |
78 | /* This needs to come after some library #include |
79 | to get __GNU_LIBRARY__ defined. */ |
80 | #ifdef __GNU_LIBRARY__ |
81 | /* Don't include stdlib.h for non-GNU C libraries because some of them |
82 | contain conflicting prototypes for getopt. */ |
83 | # include <stdlib.h> |
84 | # include <unistd.h> |
85 | #endif /* GNU C library. */ |
86 | |
87 | #ifdef VMS |
88 | # include <unixlib.h> |
89 | # if HAVE_STRING_H - 0 |
90 | # include <string.h> |
91 | # endif |
92 | #endif |
93 | |
94 | #ifndef _ |
95 | /* This is for other GNU distributions with internationalized messages. |
96 | When compiling libc, the _ macro is predefined. */ |
97 | # ifdef HAVE_LIBINTL_H |
98 | # include <libintl.h> |
99 | # define _(msgid) gettext (msgid) |
100 | # else |
101 | # define _(msgid) (msgid) |
102 | # endif |
103 | #endif |
104 | |
105 | /* This version of `share__getopt' appears to the caller like standard Unix `getopt' |
106 | but it behaves differently for the user, since it allows the user |
107 | to intersperse the options with the other arguments. |
108 | |
109 | As `share__getopt' works, it permutes the elements of ARGV so that, |
110 | when it is done, all the options precede everything else. Thus |
111 | all application programs are extended to handle flexible argument order. |
112 | |
113 | Setting the environment variable POSIXLY_CORRECT disables permutation. |
114 | Then the behavior is completely standard. |
115 | |
116 | GNU application programs can use a third alternative mode in which |
117 | they can distinguish the relative order of options and other arguments. */ |
118 | |
119 | #include "share/getopt.h" |
120 | /*[JEC] was:#include "getopt.h"*/ |
121 | |
122 | /* For communication from `share__getopt' to the caller. |
123 | When `share__getopt' finds an option that takes an argument, |
124 | the argument value is returned here. |
125 | Also, when `ordering' is RETURN_IN_ORDER, |
126 | each non-option ARGV-element is returned here. */ |
127 | |
128 | char *share__optarg = 0; /*[JEC] initialize to avoid being a 'Common' symbol */ |
129 | |
130 | /* Index in ARGV of the next element to be scanned. |
131 | This is used for communication to and from the caller |
132 | and for communication between successive calls to `share__getopt'. |
133 | |
134 | On entry to `share__getopt', zero means this is the first call; initialize. |
135 | |
136 | When `share__getopt' returns -1, this is the index of the first of the |
137 | non-option elements that the caller should itself scan. |
138 | |
139 | Otherwise, `share__optind' communicates from one call to the next |
140 | how much of ARGV has been scanned so far. */ |
141 | |
142 | /* 1003.2 says this must be 1 before any call. */ |
143 | int share__optind = 1; |
144 | |
145 | /* Formerly, initialization of getopt depended on share__optind==0, which |
146 | causes problems with re-calling getopt as programs generally don't |
147 | know that. */ |
148 | |
149 | static int share____getopt_initialized = 0; |
150 | |
151 | /* The next char to be scanned in the option-element |
152 | in which the last option character we returned was found. |
153 | This allows us to pick up the scan where we left off. |
154 | |
155 | If this is zero, or a null string, it means resume the scan |
156 | by advancing to the next ARGV-element. */ |
157 | |
158 | static char *nextchar; |
159 | |
160 | /* Callers store zero here to inhibit the error message |
161 | for unrecognized options. */ |
162 | |
163 | int share__opterr = 1; |
164 | |
165 | /* Set to an option character which was unrecognized. |
166 | This must be initialized on some systems to avoid linking in the |
167 | system's own getopt implementation. */ |
168 | |
169 | int share__optopt = '?'; |
170 | |
171 | /* Describe how to deal with options that follow non-option ARGV-elements. |
172 | |
173 | If the caller did not specify anything, |
174 | the default is REQUIRE_ORDER if the environment variable |
175 | POSIXLY_CORRECT is defined, PERMUTE otherwise. |
176 | |
177 | REQUIRE_ORDER means don't recognize them as options; |
178 | stop option processing when the first non-option is seen. |
179 | This is what Unix does. |
180 | This mode of operation is selected by either setting the environment |
181 | variable POSIXLY_CORRECT, or using `+' as the first character |
182 | of the list of option characters. |
183 | |
184 | PERMUTE is the default. We permute the contents of ARGV as we scan, |
185 | so that eventually all the non-options are at the end. This allows options |
186 | to be given in any order, even with programs that were not written to |
187 | expect this. |
188 | |
189 | RETURN_IN_ORDER is an option available to programs that were written |
190 | to expect options and other ARGV-elements in any order and that care about |
191 | the ordering of the two. We describe each non-option ARGV-element |
192 | as if it were the argument of an option with character code 1. |
193 | Using `-' as the first character of the list of option characters |
194 | selects this mode of operation. |
195 | |
196 | The special argument `--' forces an end of option-scanning regardless |
197 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only |
198 | `--' can cause `share__getopt' to return -1 with `share__optind' != ARGC. */ |
199 | |
200 | static enum |
201 | { |
202 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
203 | } ordering; |
204 | |
205 | /* Value of POSIXLY_CORRECT environment variable. */ |
206 | static char *posixly_correct; |
207 | \f |
208 | #ifdef __GNU_LIBRARY__ |
209 | /* We want to avoid inclusion of string.h with non-GNU libraries |
210 | because there are many ways it can cause trouble. |
211 | On some systems, it contains special magic macros that don't work |
212 | in GCC. */ |
213 | # include <string.h> |
214 | # define my_index strchr |
215 | #else |
216 | |
217 | #include <string.h> |
218 | |
219 | /* Avoid depending on library functions or files |
220 | whose names are inconsistent. */ |
221 | |
222 | #ifndef getenv |
223 | extern char *getenv (const char * name); |
224 | #endif |
225 | |
226 | static char * |
227 | my_index (const char *str, int chr) |
228 | { |
229 | while (*str) |
230 | { |
231 | if (*str == chr) |
232 | return (char *) str; |
233 | str++; |
234 | } |
235 | return 0; |
236 | } |
237 | |
238 | /* If using GCC, we can safely declare strlen this way. |
239 | If not using GCC, it is ok not to declare it. */ |
240 | #ifdef __GNUC__ |
241 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. |
242 | That was relevant to code that was here before. */ |
243 | # if (!defined __STDC__ || !__STDC__) && !defined strlen |
244 | /* gcc with -traditional declares the built-in strlen to return int, |
245 | and has done so at least since version 2.4.5. -- rms. */ |
246 | extern int strlen (const char *); |
247 | # endif /* not __STDC__ */ |
248 | #endif /* __GNUC__ */ |
249 | |
250 | #endif /* not __GNU_LIBRARY__ */ |
251 | \f |
252 | /* Handle permutation of arguments. */ |
253 | |
254 | /* Describe the part of ARGV that contains non-options that have |
255 | been skipped. `first_nonopt' is the index in ARGV of the first of them; |
256 | `last_nonopt' is the index after the last of them. */ |
257 | |
258 | static int first_nonopt; |
259 | static int last_nonopt; |
260 | |
261 | #ifdef _LIBC |
262 | /* Bash 2.0 gives us an environment variable containing flags |
263 | indicating ARGV elements that should not be considered arguments. */ |
264 | |
265 | /* Defined in getopt_init.c */ |
266 | extern char *__getopt_nonoption_flags; |
267 | |
268 | static int nonoption_flags_max_len; |
269 | static int nonoption_flags_len; |
270 | |
271 | static int original_argc; |
272 | static char *const *original_argv; |
273 | |
274 | /* Make sure the environment variable bash 2.0 puts in the environment |
275 | is valid for the getopt call we must make sure that the ARGV passed |
276 | to getopt is that one passed to the process. */ |
277 | static void |
278 | __attribute__ ((unused)) |
279 | store_args_and_env (int argc, char *const *argv) |
280 | { |
281 | /* XXX This is no good solution. We should rather copy the args so |
282 | that we can compare them later. But we must not use malloc(3). */ |
283 | original_argc = argc; |
284 | original_argv = argv; |
285 | } |
286 | # ifdef text_set_element |
287 | text_set_element (__libc_subinit, store_args_and_env); |
288 | # endif /* text_set_element */ |
289 | |
290 | # define SWAP_FLAGS(ch1, ch2) \ |
291 | if (nonoption_flags_len > 0) \ |
292 | { \ |
293 | char __tmp = __getopt_nonoption_flags[ch1]; \ |
294 | __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ |
295 | __getopt_nonoption_flags[ch2] = __tmp; \ |
296 | } |
297 | #else /* !_LIBC */ |
298 | # define SWAP_FLAGS(ch1, ch2) |
299 | #endif /* _LIBC */ |
300 | |
301 | /* Exchange two adjacent subsequences of ARGV. |
302 | One subsequence is elements [first_nonopt,last_nonopt) |
303 | which contains all the non-options that have been skipped so far. |
304 | The other is elements [last_nonopt,share__optind), which contains all |
305 | the options processed since those non-options were skipped. |
306 | |
307 | `first_nonopt' and `last_nonopt' are relocated so that they describe |
308 | the new indices of the non-options in ARGV after they are moved. */ |
309 | |
310 | #if defined __STDC__ && __STDC__ |
311 | static void exchange (char **); |
312 | #endif |
313 | |
314 | static void |
315 | exchange (argv) |
316 | char **argv; |
317 | { |
318 | int bottom = first_nonopt; |
319 | int middle = last_nonopt; |
320 | int top = share__optind; |
321 | char *tem; |
322 | |
323 | /* Exchange the shorter segment with the far end of the longer segment. |
324 | That puts the shorter segment into the right place. |
325 | It leaves the longer segment in the right place overall, |
326 | but it consists of two parts that need to be swapped next. */ |
327 | |
328 | #ifdef _LIBC |
329 | /* First make sure the handling of the `__getopt_nonoption_flags' |
330 | string can work normally. Our top argument must be in the range |
331 | of the string. */ |
332 | if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) |
333 | { |
334 | /* We must extend the array. The user plays games with us and |
335 | presents new arguments. */ |
336 | char *new_str = malloc (top + 1); |
337 | if (new_str == NULL) |
338 | nonoption_flags_len = nonoption_flags_max_len = 0; |
339 | else |
340 | { |
341 | memset (__mempcpy (new_str, __getopt_nonoption_flags, |
342 | nonoption_flags_max_len), |
343 | '\0', top + 1 - nonoption_flags_max_len); |
344 | nonoption_flags_max_len = top + 1; |
345 | __getopt_nonoption_flags = new_str; |
346 | } |
347 | } |
348 | #endif |
349 | |
350 | while (top > middle && middle > bottom) |
351 | { |
352 | if (top - middle > middle - bottom) |
353 | { |
354 | /* Bottom segment is the short one. */ |
355 | int len = middle - bottom; |
356 | register int i; |
357 | |
358 | /* Swap it with the top part of the top segment. */ |
359 | for (i = 0; i < len; i++) |
360 | { |
361 | tem = argv[bottom + i]; |
362 | argv[bottom + i] = argv[top - (middle - bottom) + i]; |
363 | argv[top - (middle - bottom) + i] = tem; |
364 | SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); |
365 | } |
366 | /* Exclude the moved bottom segment from further swapping. */ |
367 | top -= len; |
368 | } |
369 | else |
370 | { |
371 | /* Top segment is the short one. */ |
372 | int len = top - middle; |
373 | register int i; |
374 | |
375 | /* Swap it with the bottom part of the bottom segment. */ |
376 | for (i = 0; i < len; i++) |
377 | { |
378 | tem = argv[bottom + i]; |
379 | argv[bottom + i] = argv[middle + i]; |
380 | argv[middle + i] = tem; |
381 | SWAP_FLAGS (bottom + i, middle + i); |
382 | } |
383 | /* Exclude the moved top segment from further swapping. */ |
384 | bottom += len; |
385 | } |
386 | } |
387 | |
388 | /* Update records for the slots the non-options now occupy. */ |
389 | |
390 | first_nonopt += (share__optind - last_nonopt); |
391 | last_nonopt = share__optind; |
392 | } |
393 | |
394 | /* Initialize the internal data when the first call is made. */ |
395 | |
396 | #if defined __STDC__ && __STDC__ |
397 | static const char *share___getopt_initialize (int, char *const *, const char *); |
398 | #endif |
399 | static const char * |
400 | share___getopt_initialize (argc, argv, optstring) |
401 | int argc; |
402 | char *const *argv; |
403 | const char *optstring; |
404 | { |
405 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 |
406 | is the program name); the sequence of previously skipped |
407 | non-option ARGV-elements is empty. */ |
408 | |
409 | first_nonopt = last_nonopt = share__optind; |
410 | |
411 | nextchar = NULL; |
412 | |
413 | posixly_correct = getenv ("POSIXLY_CORRECT"); |
414 | |
415 | /* Determine how to handle the ordering of options and nonoptions. */ |
416 | |
417 | if (optstring[0] == '-') |
418 | { |
419 | ordering = RETURN_IN_ORDER; |
420 | ++optstring; |
421 | } |
422 | else if (optstring[0] == '+') |
423 | { |
424 | ordering = REQUIRE_ORDER; |
425 | ++optstring; |
426 | } |
427 | else if (posixly_correct != NULL) |
428 | ordering = REQUIRE_ORDER; |
429 | else |
430 | ordering = PERMUTE; |
431 | |
432 | #ifdef _LIBC |
433 | if (posixly_correct == NULL |
434 | && argc == original_argc && argv == original_argv) |
435 | { |
436 | if (nonoption_flags_max_len == 0) |
437 | { |
438 | if (__getopt_nonoption_flags == NULL |
439 | || __getopt_nonoption_flags[0] == '\0') |
440 | nonoption_flags_max_len = -1; |
441 | else |
442 | { |
443 | const char *orig_str = __getopt_nonoption_flags; |
444 | int len = nonoption_flags_max_len = strlen (orig_str); |
445 | if (nonoption_flags_max_len < argc) |
446 | nonoption_flags_max_len = argc; |
447 | __getopt_nonoption_flags = |
448 | malloc (nonoption_flags_max_len); |
449 | if (__getopt_nonoption_flags == NULL) |
450 | nonoption_flags_max_len = -1; |
451 | else |
452 | memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), |
453 | '\0', nonoption_flags_max_len - len); |
454 | } |
455 | } |
456 | nonoption_flags_len = nonoption_flags_max_len; |
457 | } |
458 | else |
459 | nonoption_flags_len = 0; |
460 | #else |
461 | (void)argc, (void)argv; |
462 | #endif |
463 | |
464 | return optstring; |
465 | } |
466 | \f |
467 | /* Scan elements of ARGV (whose length is ARGC) for option characters |
468 | given in OPTSTRING. |
469 | |
470 | If an element of ARGV starts with '-', and is not exactly "-" or "--", |
471 | then it is an option element. The characters of this element |
472 | (aside from the initial '-') are option characters. If `share__getopt' |
473 | is called repeatedly, it returns successively each of the option characters |
474 | from each of the option elements. |
475 | |
476 | If `share__getopt' finds another option character, it returns that character, |
477 | updating `share__optind' and `nextchar' so that the next call to `share__getopt' can |
478 | resume the scan with the following option character or ARGV-element. |
479 | |
480 | If there are no more option characters, `share__getopt' returns -1. |
481 | Then `share__optind' is the index in ARGV of the first ARGV-element |
482 | that is not an option. (The ARGV-elements have been permuted |
483 | so that those that are not options now come last.) |
484 | |
485 | OPTSTRING is a string containing the legitimate option characters. |
486 | If an option character is seen that is not listed in OPTSTRING, |
487 | return '?' after printing an error message. If you set `share__opterr' to |
488 | zero, the error message is suppressed but we still return '?'. |
489 | |
490 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
491 | so the following text in the same ARGV-element, or the text of the following |
492 | ARGV-element, is returned in `share__optarg'. Two colons mean an option that |
493 | wants an optional arg; if there is text in the current ARGV-element, |
494 | it is returned in `share__optarg', otherwise `share__optarg' is set to zero. |
495 | |
496 | If OPTSTRING starts with `-' or `+', it requests different methods of |
497 | handling the non-option ARGV-elements. |
498 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
499 | |
500 | Long-named options begin with `--' instead of `-'. |
501 | Their names may be abbreviated as long as the abbreviation is unique |
502 | or is an exact match for some defined option. If they have an |
503 | argument, it follows the option name in the same ARGV-element, separated |
504 | from the option name by a `=', or else the in next ARGV-element. |
505 | When `share__getopt' finds a long-named option, it returns 0 if that option's |
506 | `flag' field is nonzero, the value of the option's `val' field |
507 | if the `flag' field is zero. |
508 | |
509 | The elements of ARGV aren't really const, because we permute them. |
510 | But we pretend they're const in the prototype to be compatible |
511 | with other systems. |
512 | |
513 | LONGOPTS is a vector of `struct share__option' terminated by an |
514 | element containing a name which is zero. |
515 | |
516 | LONGIND returns the index in LONGOPT of the long-named option found. |
517 | It is only valid when a long-named option has been found by the most |
518 | recent call. |
519 | |
520 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
521 | long-named options. */ |
522 | |
523 | int |
524 | share___getopt_internal (argc, argv, optstring, longopts, longind, long_only) |
525 | int argc; |
526 | char *const *argv; |
527 | const char *optstring; |
528 | const struct share__option *longopts; |
529 | int *longind; |
530 | int long_only; |
531 | { |
532 | share__optarg = NULL; |
533 | |
534 | if (share__optind == 0 || !share____getopt_initialized) |
535 | { |
536 | if (share__optind == 0) |
537 | share__optind = 1; /* Don't scan ARGV[0], the program name. */ |
538 | optstring = share___getopt_initialize (argc, argv, optstring); |
539 | share____getopt_initialized = 1; |
540 | } |
541 | |
542 | /* Test whether ARGV[share__optind] points to a non-option argument. |
543 | Either it does not have option syntax, or there is an environment flag |
544 | from the shell indicating it is not an option. The later information |
545 | is only used when the used in the GNU libc. */ |
546 | #ifdef _LIBC |
547 | # define NONOPTION_P (argv[share__optind][0] != '-' || argv[share__optind][1] == '\0' \ |
548 | || (share__optind < nonoption_flags_len \ |
549 | && __getopt_nonoption_flags[share__optind] == '1')) |
550 | #else |
551 | # define NONOPTION_P (argv[share__optind][0] != '-' || argv[share__optind][1] == '\0') |
552 | #endif |
553 | |
554 | if (nextchar == NULL || *nextchar == '\0') |
555 | { |
556 | /* Advance to the next ARGV-element. */ |
557 | |
558 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been |
559 | moved back by the user (who may also have changed the arguments). */ |
560 | if (last_nonopt > share__optind) |
561 | last_nonopt = share__optind; |
562 | if (first_nonopt > share__optind) |
563 | first_nonopt = share__optind; |
564 | |
565 | if (ordering == PERMUTE) |
566 | { |
567 | /* If we have just processed some options following some non-options, |
568 | exchange them so that the options come first. */ |
569 | |
570 | if (first_nonopt != last_nonopt && last_nonopt != share__optind) |
571 | exchange ((char **) argv); |
572 | else if (last_nonopt != share__optind) |
573 | first_nonopt = share__optind; |
574 | |
575 | /* Skip any additional non-options |
576 | and extend the range of non-options previously skipped. */ |
577 | |
578 | while (share__optind < argc && NONOPTION_P) |
579 | share__optind++; |
580 | last_nonopt = share__optind; |
581 | } |
582 | |
583 | /* The special ARGV-element `--' means premature end of options. |
584 | Skip it like a null option, |
585 | then exchange with previous non-options as if it were an option, |
586 | then skip everything else like a non-option. */ |
587 | |
588 | if (share__optind != argc && !strcmp (argv[share__optind], "--")) |
589 | { |
590 | share__optind++; |
591 | |
592 | if (first_nonopt != last_nonopt && last_nonopt != share__optind) |
593 | exchange ((char **) argv); |
594 | else if (first_nonopt == last_nonopt) |
595 | first_nonopt = share__optind; |
596 | last_nonopt = argc; |
597 | |
598 | share__optind = argc; |
599 | } |
600 | |
601 | /* If we have done all the ARGV-elements, stop the scan |
602 | and back over any non-options that we skipped and permuted. */ |
603 | |
604 | if (share__optind == argc) |
605 | { |
606 | /* Set the next-arg-index to point at the non-options |
607 | that we previously skipped, so the caller will digest them. */ |
608 | if (first_nonopt != last_nonopt) |
609 | share__optind = first_nonopt; |
610 | return -1; |
611 | } |
612 | |
613 | /* If we have come to a non-option and did not permute it, |
614 | either stop the scan or describe it to the caller and pass it by. */ |
615 | |
616 | if (NONOPTION_P) |
617 | { |
618 | if (ordering == REQUIRE_ORDER) |
619 | return -1; |
620 | share__optarg = argv[share__optind++]; |
621 | return 1; |
622 | } |
623 | |
624 | /* We have found another option-ARGV-element. |
625 | Skip the initial punctuation. */ |
626 | |
627 | nextchar = (argv[share__optind] + 1 |
628 | + (longopts != NULL && argv[share__optind][1] == '-')); |
629 | } |
630 | |
631 | /* Decode the current option-ARGV-element. */ |
632 | |
633 | /* Check whether the ARGV-element is a long option. |
634 | |
635 | If long_only and the ARGV-element has the form "-f", where f is |
636 | a valid short option, don't consider it an abbreviated form of |
637 | a long option that starts with f. Otherwise there would be no |
638 | way to give the -f short option. |
639 | |
640 | On the other hand, if there's a long option "fubar" and |
641 | the ARGV-element is "-fu", do consider that an abbreviation of |
642 | the long option, just like "--fu", and not "-f" with arg "u". |
643 | |
644 | This distinction seems to be the most useful approach. */ |
645 | |
646 | if (longopts != NULL |
647 | && (argv[share__optind][1] == '-' |
648 | || (long_only && (argv[share__optind][2] || !my_index (optstring, argv[share__optind][1]))))) |
649 | { |
650 | char *nameend; |
651 | const struct share__option *p; |
652 | const struct share__option *pfound = NULL; |
653 | int exact = 0; |
654 | int ambig = 0; |
655 | int indfound = -1; |
656 | int option_index; |
657 | |
658 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) |
659 | /* Do nothing. */ ; |
660 | |
661 | /* Test all long options for either exact match |
662 | or abbreviated matches. */ |
663 | for (p = longopts, option_index = 0; p->name; p++, option_index++) |
664 | if (!strncmp (p->name, nextchar, nameend - nextchar)) |
665 | { |
666 | if ((unsigned int) (nameend - nextchar) |
667 | == (unsigned int) strlen (p->name)) |
668 | { |
669 | /* Exact match found. */ |
670 | pfound = p; |
671 | indfound = option_index; |
672 | exact = 1; |
673 | break; |
674 | } |
675 | else if (pfound == NULL) |
676 | { |
677 | /* First nonexact match found. */ |
678 | pfound = p; |
679 | indfound = option_index; |
680 | } |
681 | else |
682 | /* Second or later nonexact match found. */ |
683 | ambig = 1; |
684 | } |
685 | |
686 | if (ambig && !exact) |
687 | { |
688 | if (share__opterr) |
689 | fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
690 | argv[0], argv[share__optind]); |
691 | nextchar += strlen (nextchar); |
692 | share__optind++; |
693 | share__optopt = 0; |
694 | return '?'; |
695 | } |
696 | |
697 | if (pfound != NULL) |
698 | { |
699 | option_index = indfound; |
700 | share__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 | share__optarg = nameend + 1; |
707 | else |
708 | { |
709 | if (share__opterr) |
710 | { |
711 | if (argv[share__optind - 1][1] == '-') |
712 | /* --option */ |
713 | fprintf (stderr, |
714 | _("%s: option `--%s' doesn't allow an argument\n"), |
715 | argv[0], pfound->name); |
716 | else |
717 | /* +option or -option */ |
718 | fprintf (stderr, |
719 | _("%s: option `%c%s' doesn't allow an argument\n"), |
720 | argv[0], argv[share__optind - 1][0], pfound->name); |
721 | } |
722 | |
723 | nextchar += strlen (nextchar); |
724 | |
725 | share__optopt = pfound->val; |
726 | return '?'; |
727 | } |
728 | } |
729 | else if (pfound->has_arg == 1) |
730 | { |
731 | if (share__optind < argc) |
732 | share__optarg = argv[share__optind++]; |
733 | else |
734 | { |
735 | if (share__opterr) |
736 | fprintf (stderr, |
737 | _("%s: option `%s' requires an argument\n"), |
738 | argv[0], argv[share__optind - 1]); |
739 | nextchar += strlen (nextchar); |
740 | share__optopt = pfound->val; |
741 | return optstring[0] == ':' ? ':' : '?'; |
742 | } |
743 | } |
744 | nextchar += strlen (nextchar); |
745 | if (longind != NULL) |
746 | *longind = option_index; |
747 | if (pfound->flag) |
748 | { |
749 | *(pfound->flag) = pfound->val; |
750 | return 0; |
751 | } |
752 | return pfound->val; |
753 | } |
754 | |
755 | /* Can't find it as a long option. If this is not share__getopt_long_only, |
756 | or the option starts with '--' or is not a valid short |
757 | option, then it's an error. |
758 | Otherwise interpret it as a short option. */ |
759 | if (!long_only || argv[share__optind][1] == '-' |
760 | || my_index (optstring, *nextchar) == NULL) |
761 | { |
762 | if (share__opterr) |
763 | { |
764 | if (argv[share__optind][1] == '-') |
765 | /* --option */ |
766 | fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
767 | argv[0], nextchar); |
768 | else |
769 | /* +option or -option */ |
770 | fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
771 | argv[0], argv[share__optind][0], nextchar); |
772 | } |
773 | nextchar = (char *) ""; |
774 | share__optind++; |
775 | share__optopt = 0; |
776 | return '?'; |
777 | } |
778 | } |
779 | |
780 | /* Look at and handle the next short option-character. */ |
781 | |
782 | { |
783 | char c = *nextchar++; |
784 | char *temp = my_index (optstring, c); |
785 | |
786 | /* Increment `share__optind' when we start to process its last character. */ |
787 | if (*nextchar == '\0') |
788 | ++share__optind; |
789 | |
790 | if (temp == NULL || c == ':') |
791 | { |
792 | if (share__opterr) |
793 | { |
794 | if (posixly_correct) |
795 | /* 1003.2 specifies the format of this message. */ |
796 | fprintf (stderr, _("%s: illegal option -- %c\n"), |
797 | argv[0], c); |
798 | else |
799 | fprintf (stderr, _("%s: invalid option -- %c\n"), |
800 | argv[0], c); |
801 | } |
802 | share__optopt = c; |
803 | return '?'; |
804 | } |
805 | /* Convenience. Treat POSIX -W foo same as long option --foo */ |
806 | if (temp[0] == 'W' && temp[1] == ';') |
807 | { |
808 | char *nameend; |
809 | const struct share__option *p; |
810 | const struct share__option *pfound = NULL; |
811 | int exact = 0; |
812 | int ambig = 0; |
813 | int indfound = 0; |
814 | int option_index; |
815 | |
816 | /* This is an option that requires an argument. */ |
817 | if (*nextchar != '\0') |
818 | { |
819 | share__optarg = nextchar; |
820 | /* If we end this ARGV-element by taking the rest as an arg, |
821 | we must advance to the next element now. */ |
822 | share__optind++; |
823 | } |
824 | else if (share__optind == argc) |
825 | { |
826 | if (share__opterr) |
827 | { |
828 | /* 1003.2 specifies the format of this message. */ |
829 | fprintf (stderr, _("%s: option requires an argument -- %c\n"), |
830 | argv[0], c); |
831 | } |
832 | share__optopt = c; |
833 | if (optstring[0] == ':') |
834 | c = ':'; |
835 | else |
836 | c = '?'; |
837 | return c; |
838 | } |
839 | else |
840 | /* We already incremented `share__optind' once; |
841 | increment it again when taking next ARGV-elt as argument. */ |
842 | share__optarg = argv[share__optind++]; |
843 | |
844 | /* share__optarg is now the argument, see if it's in the |
845 | table of longopts. */ |
846 | |
847 | for (nextchar = nameend = share__optarg; *nameend && *nameend != '='; nameend++) |
848 | /* Do nothing. */ ; |
849 | |
850 | /* Test all long options for either exact match |
851 | or abbreviated matches. */ |
852 | for (p = longopts, option_index = 0; p->name; p++, option_index++) |
853 | if (!strncmp (p->name, nextchar, nameend - nextchar)) |
854 | { |
855 | if ((unsigned int) (nameend - nextchar) == strlen (p->name)) |
856 | { |
857 | /* Exact match found. */ |
858 | pfound = p; |
859 | indfound = option_index; |
860 | exact = 1; |
861 | break; |
862 | } |
863 | else if (pfound == NULL) |
864 | { |
865 | /* First nonexact match found. */ |
866 | pfound = p; |
867 | indfound = option_index; |
868 | } |
869 | else |
870 | /* Second or later nonexact match found. */ |
871 | ambig = 1; |
872 | } |
873 | if (ambig && !exact) |
874 | { |
875 | if (share__opterr) |
876 | fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), |
877 | argv[0], argv[share__optind]); |
878 | nextchar += strlen (nextchar); |
879 | share__optind++; |
880 | return '?'; |
881 | } |
882 | if (pfound != NULL) |
883 | { |
884 | option_index = indfound; |
885 | if (*nameend) |
886 | { |
887 | /* Don't test has_arg with >, because some C compilers don't |
888 | allow it to be used on enums. */ |
889 | if (pfound->has_arg) |
890 | share__optarg = nameend + 1; |
891 | else |
892 | { |
893 | if (share__opterr) |
894 | fprintf (stderr, _("\ |
895 | %s: option `-W %s' doesn't allow an argument\n"), |
896 | argv[0], pfound->name); |
897 | |
898 | nextchar += strlen (nextchar); |
899 | return '?'; |
900 | } |
901 | } |
902 | else if (pfound->has_arg == 1) |
903 | { |
904 | if (share__optind < argc) |
905 | share__optarg = argv[share__optind++]; |
906 | else |
907 | { |
908 | if (share__opterr) |
909 | fprintf (stderr, |
910 | _("%s: option `%s' requires an argument\n"), |
911 | argv[0], argv[share__optind - 1]); |
912 | nextchar += strlen (nextchar); |
913 | return optstring[0] == ':' ? ':' : '?'; |
914 | } |
915 | } |
916 | nextchar += strlen (nextchar); |
917 | if (longind != NULL) |
918 | *longind = option_index; |
919 | if (pfound->flag) |
920 | { |
921 | *(pfound->flag) = pfound->val; |
922 | return 0; |
923 | } |
924 | return pfound->val; |
925 | } |
926 | nextchar = NULL; |
927 | return 'W'; /* Let the application handle it. */ |
928 | } |
929 | if (temp[1] == ':') |
930 | { |
931 | if (temp[2] == ':') |
932 | { |
933 | /* This is an option that accepts an argument optionally. */ |
934 | if (*nextchar != '\0') |
935 | { |
936 | share__optarg = nextchar; |
937 | share__optind++; |
938 | } |
939 | else |
940 | share__optarg = NULL; |
941 | nextchar = NULL; |
942 | } |
943 | else |
944 | { |
945 | /* This is an option that requires an argument. */ |
946 | if (*nextchar != '\0') |
947 | { |
948 | share__optarg = nextchar; |
949 | /* If we end this ARGV-element by taking the rest as an arg, |
950 | we must advance to the next element now. */ |
951 | share__optind++; |
952 | } |
953 | else if (share__optind == argc) |
954 | { |
955 | if (share__opterr) |
956 | { |
957 | /* 1003.2 specifies the format of this message. */ |
958 | fprintf (stderr, |
959 | _("%s: option requires an argument -- %c\n"), |
960 | argv[0], c); |
961 | } |
962 | share__optopt = c; |
963 | if (optstring[0] == ':') |
964 | c = ':'; |
965 | else |
966 | c = '?'; |
967 | } |
968 | else |
969 | /* We already incremented `share__optind' once; |
970 | increment it again when taking next ARGV-elt as argument. */ |
971 | share__optarg = argv[share__optind++]; |
972 | nextchar = NULL; |
973 | } |
974 | } |
975 | return c; |
976 | } |
977 | } |
978 | |
979 | int |
980 | share__getopt (argc, argv, optstring) |
981 | int argc; |
982 | char *const *argv; |
983 | const char *optstring; |
984 | { |
985 | return share___getopt_internal (argc, argv, optstring, |
986 | (const struct share__option *) 0, |
987 | (int *) 0, |
988 | 0); |
989 | } |
990 | |
991 | #endif /* Not ELIDE_CODE. */ |
992 | \f |
993 | #ifdef TEST |
994 | |
995 | /* Compile with -DTEST to make an executable for use in testing |
996 | the above definition of `share__getopt'. */ |
997 | |
998 | int |
999 | main (argc, argv) |
1000 | int argc; |
1001 | char **argv; |
1002 | { |
1003 | int c; |
1004 | int digit_optind = 0; |
1005 | |
1006 | while (1) |
1007 | { |
1008 | int this_option_optind = share__optind ? share__optind : 1; |
1009 | |
1010 | c = share__getopt (argc, argv, "abc:d:0123456789"); |
1011 | if (c == -1) |
1012 | break; |
1013 | |
1014 | switch (c) |
1015 | { |
1016 | case '0': |
1017 | case '1': |
1018 | case '2': |
1019 | case '3': |
1020 | case '4': |
1021 | case '5': |
1022 | case '6': |
1023 | case '7': |
1024 | case '8': |
1025 | case '9': |
1026 | if (digit_optind != 0 && digit_optind != this_option_optind) |
1027 | printf ("digits occur in two different argv-elements.\n"); |
1028 | digit_optind = this_option_optind; |
1029 | printf ("option %c\n", c); |
1030 | break; |
1031 | |
1032 | case 'a': |
1033 | printf ("option a\n"); |
1034 | break; |
1035 | |
1036 | case 'b': |
1037 | printf ("option b\n"); |
1038 | break; |
1039 | |
1040 | case 'c': |
1041 | printf ("option c with value `%s'\n", share__optarg); |
1042 | break; |
1043 | |
1044 | case '?': |
1045 | break; |
1046 | |
1047 | default: |
1048 | printf ("?? getopt returned character code 0%o ??\n", c); |
1049 | } |
1050 | } |
1051 | |
1052 | if (share__optind < argc) |
1053 | { |
1054 | printf ("non-option ARGV-elements: "); |
1055 | while (share__optind < argc) |
1056 | printf ("%s ", argv[share__optind++]); |
1057 | printf ("\n"); |
1058 | } |
1059 | |
1060 | exit (0); |
1061 | } |
1062 | |
1063 | #endif /* TEST */ |