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28f540f4 RM |
1 | /* Getopt for GNU. |
2 | NOTE: getopt is now part of the C library, so if you don't know what | |
3 | "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu | |
4 | before changing it! | |
5 | ||
e335fa38 | 6 | Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 1996 |
28f540f4 RM |
7 | Free Software Foundation, Inc. |
8 | ||
9 | This file is part of the GNU C Library. Its master source is NOT part of | |
10 | the C library, however. The master source lives in /gd/gnu/lib. | |
11 | ||
12 | The GNU C Library is free software; you can redistribute it and/or | |
13 | modify it under the terms of the GNU Library General Public License as | |
14 | published by the Free Software Foundation; either version 2 of the | |
15 | License, or (at your option) any later version. | |
16 | ||
17 | The GNU C Library is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
20 | Library General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU Library General Public | |
23 | License along with the GNU C Library; see the file COPYING.LIB. If | |
24 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
25 | Cambridge, MA 02139, USA. */ | |
26 | \f | |
27 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. | |
28 | Ditto for AIX 3.2 and <stdlib.h>. */ | |
29 | #ifndef _NO_PROTO | |
30 | #define _NO_PROTO | |
31 | #endif | |
32 | ||
33 | #ifdef HAVE_CONFIG_H | |
28f540f4 | 34 | #include <config.h> |
28f540f4 RM |
35 | #endif |
36 | ||
0ad46177 | 37 | #if !defined (__STDC__) || !__STDC__ |
28f540f4 RM |
38 | /* This is a separate conditional since some stdc systems |
39 | reject `defined (const)'. */ | |
40 | #ifndef const | |
41 | #define const | |
42 | #endif | |
43 | #endif | |
44 | ||
45 | #include <stdio.h> | |
46 | ||
47 | /* Comment out all this code if we are using the GNU C Library, and are not | |
48 | actually compiling the library itself. This code is part of the GNU C | |
49 | Library, but also included in many other GNU distributions. Compiling | |
50 | and linking in this code is a waste when using the GNU C library | |
51 | (especially if it is a shared library). Rather than having every GNU | |
52 | program understand `configure --with-gnu-libc' and omit the object files, | |
53 | it is simpler to just do this in the source for each such file. */ | |
54 | ||
55 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__) | |
56 | ||
57 | ||
58 | /* This needs to come after some library #include | |
59 | to get __GNU_LIBRARY__ defined. */ | |
60 | #ifdef __GNU_LIBRARY__ | |
61 | /* Don't include stdlib.h for non-GNU C libraries because some of them | |
62 | contain conflicting prototypes for getopt. */ | |
63 | #include <stdlib.h> | |
a482b5a5 | 64 | #include <unistd.h> |
28f540f4 RM |
65 | #endif /* GNU C library. */ |
66 | ||
12fb2990 RM |
67 | #ifdef VMS |
68 | #include <unixlib.h> | |
69 | #if HAVE_STRING_H - 0 | |
70 | #include <string.h> | |
71 | #endif | |
72 | #endif | |
73 | ||
5f0e6fc7 | 74 | #if defined (WIN32) && !defined (__CYGWIN32__) |
12fb2990 RM |
75 | /* It's not Unix, really. See? Capital letters. */ |
76 | #include <windows.h> | |
77 | #define getpid() GetCurrentProcessId() | |
78 | #endif | |
79 | ||
879bf2e6 | 80 | #ifndef _ |
0ad46177 | 81 | /* This is for other GNU distributions with internationalized messages. |
879bf2e6 RM |
82 | When compiling libc, the _ macro is predefined. */ |
83 | #ifdef HAVE_LIBINTL_H | |
0ad46177 | 84 | # include <libintl.h> |
879bf2e6 | 85 | # define _(msgid) gettext (msgid) |
0ad46177 | 86 | #else |
879bf2e6 RM |
87 | # define _(msgid) (msgid) |
88 | #endif | |
0ad46177 RM |
89 | #endif |
90 | ||
28f540f4 RM |
91 | /* This version of `getopt' appears to the caller like standard Unix `getopt' |
92 | but it behaves differently for the user, since it allows the user | |
93 | to intersperse the options with the other arguments. | |
94 | ||
95 | As `getopt' works, it permutes the elements of ARGV so that, | |
96 | when it is done, all the options precede everything else. Thus | |
97 | all application programs are extended to handle flexible argument order. | |
98 | ||
99 | Setting the environment variable POSIXLY_CORRECT disables permutation. | |
100 | Then the behavior is completely standard. | |
101 | ||
102 | GNU application programs can use a third alternative mode in which | |
103 | they can distinguish the relative order of options and other arguments. */ | |
104 | ||
105 | #include "getopt.h" | |
106 | ||
107 | /* For communication from `getopt' to the caller. | |
108 | When `getopt' finds an option that takes an argument, | |
109 | the argument value is returned here. | |
110 | Also, when `ordering' is RETURN_IN_ORDER, | |
111 | each non-option ARGV-element is returned here. */ | |
112 | ||
113 | char *optarg = NULL; | |
114 | ||
115 | /* Index in ARGV of the next element to be scanned. | |
116 | This is used for communication to and from the caller | |
117 | and for communication between successive calls to `getopt'. | |
118 | ||
119 | On entry to `getopt', zero means this is the first call; initialize. | |
120 | ||
121 | When `getopt' returns EOF, this is the index of the first of the | |
122 | non-option elements that the caller should itself scan. | |
123 | ||
124 | Otherwise, `optind' communicates from one call to the next | |
125 | how much of ARGV has been scanned so far. */ | |
126 | ||
127 | /* XXX 1003.2 says this must be 1 before any call. */ | |
128 | int optind = 0; | |
129 | ||
130 | /* The next char to be scanned in the option-element | |
131 | in which the last option character we returned was found. | |
132 | This allows us to pick up the scan where we left off. | |
133 | ||
134 | If this is zero, or a null string, it means resume the scan | |
135 | by advancing to the next ARGV-element. */ | |
136 | ||
137 | static char *nextchar; | |
138 | ||
139 | /* Callers store zero here to inhibit the error message | |
140 | for unrecognized options. */ | |
141 | ||
142 | int opterr = 1; | |
143 | ||
144 | /* Set to an option character which was unrecognized. | |
145 | This must be initialized on some systems to avoid linking in the | |
146 | system's own getopt implementation. */ | |
147 | ||
148 | int optopt = '?'; | |
149 | ||
150 | /* Describe how to deal with options that follow non-option ARGV-elements. | |
151 | ||
152 | If the caller did not specify anything, | |
153 | the default is REQUIRE_ORDER if the environment variable | |
154 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | |
155 | ||
156 | REQUIRE_ORDER means don't recognize them as options; | |
157 | stop option processing when the first non-option is seen. | |
158 | This is what Unix does. | |
159 | This mode of operation is selected by either setting the environment | |
160 | variable POSIXLY_CORRECT, or using `+' as the first character | |
161 | of the list of option characters. | |
162 | ||
163 | PERMUTE is the default. We permute the contents of ARGV as we scan, | |
164 | so that eventually all the non-options are at the end. This allows options | |
165 | to be given in any order, even with programs that were not written to | |
166 | expect this. | |
167 | ||
168 | RETURN_IN_ORDER is an option available to programs that were written | |
169 | to expect options and other ARGV-elements in any order and that care about | |
170 | the ordering of the two. We describe each non-option ARGV-element | |
171 | as if it were the argument of an option with character code 1. | |
172 | Using `-' as the first character of the list of option characters | |
173 | selects this mode of operation. | |
174 | ||
175 | The special argument `--' forces an end of option-scanning regardless | |
176 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | |
177 | `--' can cause `getopt' to return EOF with `optind' != ARGC. */ | |
178 | ||
179 | static enum | |
180 | { | |
181 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER | |
182 | } ordering; | |
183 | ||
184 | /* Value of POSIXLY_CORRECT environment variable. */ | |
185 | static char *posixly_correct; | |
186 | \f | |
187 | #ifdef __GNU_LIBRARY__ | |
188 | /* We want to avoid inclusion of string.h with non-GNU libraries | |
189 | because there are many ways it can cause trouble. | |
190 | On some systems, it contains special magic macros that don't work | |
191 | in GCC. */ | |
192 | #include <string.h> | |
193 | #define my_index strchr | |
194 | #else | |
195 | ||
196 | /* Avoid depending on library functions or files | |
197 | whose names are inconsistent. */ | |
198 | ||
199 | char *getenv (); | |
200 | ||
201 | static char * | |
202 | my_index (str, chr) | |
203 | const char *str; | |
204 | int chr; | |
205 | { | |
206 | while (*str) | |
207 | { | |
208 | if (*str == chr) | |
209 | return (char *) str; | |
210 | str++; | |
211 | } | |
212 | return 0; | |
213 | } | |
214 | ||
215 | /* If using GCC, we can safely declare strlen this way. | |
216 | If not using GCC, it is ok not to declare it. */ | |
217 | #ifdef __GNUC__ | |
218 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | |
219 | That was relevant to code that was here before. */ | |
0ad46177 | 220 | #if !defined (__STDC__) || !__STDC__ |
28f540f4 RM |
221 | /* gcc with -traditional declares the built-in strlen to return int, |
222 | and has done so at least since version 2.4.5. -- rms. */ | |
223 | extern int strlen (const char *); | |
224 | #endif /* not __STDC__ */ | |
225 | #endif /* __GNUC__ */ | |
226 | ||
227 | #endif /* not __GNU_LIBRARY__ */ | |
228 | \f | |
229 | /* Handle permutation of arguments. */ | |
230 | ||
231 | /* Describe the part of ARGV that contains non-options that have | |
232 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | |
233 | `last_nonopt' is the index after the last of them. */ | |
234 | ||
235 | static int first_nonopt; | |
236 | static int last_nonopt; | |
237 | ||
b07c5668 RM |
238 | /* Bash 2.0 gives us an environment variable containing flags |
239 | indicating ARGV elements that should not be considered arguments. */ | |
240 | ||
241 | static const char *nonoption_flags; | |
242 | static int nonoption_flags_len; | |
243 | ||
28f540f4 RM |
244 | /* Exchange two adjacent subsequences of ARGV. |
245 | One subsequence is elements [first_nonopt,last_nonopt) | |
246 | which contains all the non-options that have been skipped so far. | |
247 | The other is elements [last_nonopt,optind), which contains all | |
248 | the options processed since those non-options were skipped. | |
249 | ||
250 | `first_nonopt' and `last_nonopt' are relocated so that they describe | |
251 | the new indices of the non-options in ARGV after they are moved. */ | |
252 | ||
eb63bdd0 RM |
253 | #if defined (__STDC__) && __STDC__ |
254 | static void exchange (char **); | |
255 | #endif | |
256 | ||
28f540f4 RM |
257 | static void |
258 | exchange (argv) | |
259 | char **argv; | |
260 | { | |
261 | int bottom = first_nonopt; | |
262 | int middle = last_nonopt; | |
263 | int top = optind; | |
264 | char *tem; | |
265 | ||
266 | /* Exchange the shorter segment with the far end of the longer segment. | |
267 | That puts the shorter segment into the right place. | |
268 | It leaves the longer segment in the right place overall, | |
269 | but it consists of two parts that need to be swapped next. */ | |
270 | ||
271 | while (top > middle && middle > bottom) | |
272 | { | |
273 | if (top - middle > middle - bottom) | |
274 | { | |
275 | /* Bottom segment is the short one. */ | |
276 | int len = middle - bottom; | |
277 | register int i; | |
278 | ||
279 | /* Swap it with the top part of the top segment. */ | |
280 | for (i = 0; i < len; i++) | |
281 | { | |
282 | tem = argv[bottom + i]; | |
283 | argv[bottom + i] = argv[top - (middle - bottom) + i]; | |
284 | argv[top - (middle - bottom) + i] = tem; | |
285 | } | |
286 | /* Exclude the moved bottom segment from further swapping. */ | |
287 | top -= len; | |
288 | } | |
289 | else | |
290 | { | |
291 | /* Top segment is the short one. */ | |
292 | int len = top - middle; | |
293 | register int i; | |
294 | ||
295 | /* Swap it with the bottom part of the bottom segment. */ | |
296 | for (i = 0; i < len; i++) | |
297 | { | |
298 | tem = argv[bottom + i]; | |
299 | argv[bottom + i] = argv[middle + i]; | |
300 | argv[middle + i] = tem; | |
301 | } | |
302 | /* Exclude the moved top segment from further swapping. */ | |
303 | bottom += len; | |
304 | } | |
305 | } | |
306 | ||
307 | /* Update records for the slots the non-options now occupy. */ | |
308 | ||
309 | first_nonopt += (optind - last_nonopt); | |
310 | last_nonopt = optind; | |
311 | } | |
312 | ||
313 | /* Initialize the internal data when the first call is made. */ | |
314 | ||
eb63bdd0 RM |
315 | #if defined (__STDC__) && __STDC__ |
316 | static const char *_getopt_initialize (const char *); | |
317 | #endif | |
28f540f4 RM |
318 | static const char * |
319 | _getopt_initialize (optstring) | |
320 | const char *optstring; | |
321 | { | |
322 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 | |
323 | is the program name); the sequence of previously skipped | |
324 | non-option ARGV-elements is empty. */ | |
325 | ||
326 | first_nonopt = last_nonopt = optind = 1; | |
327 | ||
328 | nextchar = NULL; | |
329 | ||
330 | posixly_correct = getenv ("POSIXLY_CORRECT"); | |
331 | ||
332 | /* Determine how to handle the ordering of options and nonoptions. */ | |
333 | ||
334 | if (optstring[0] == '-') | |
335 | { | |
336 | ordering = RETURN_IN_ORDER; | |
337 | ++optstring; | |
338 | } | |
339 | else if (optstring[0] == '+') | |
340 | { | |
341 | ordering = REQUIRE_ORDER; | |
342 | ++optstring; | |
343 | } | |
344 | else if (posixly_correct != NULL) | |
345 | ordering = REQUIRE_ORDER; | |
346 | else | |
347 | ordering = PERMUTE; | |
348 | ||
b07c5668 RM |
349 | if (posixly_correct == NULL) |
350 | { | |
351 | /* Bash 2.0 puts a special variable in the environment for each | |
352 | command it runs, specifying which ARGV elements are the results of | |
353 | file name wildcard expansion and therefore should not be | |
354 | considered as options. */ | |
355 | char var[100]; | |
356 | sprintf (var, "_%d_GNU_nonoption_argv_flags_", getpid ()); | |
357 | nonoption_flags = getenv (var); | |
358 | if (nonoption_flags == NULL) | |
359 | nonoption_flags_len = 0; | |
360 | else | |
361 | nonoption_flags_len = strlen (nonoption_flags); | |
362 | } | |
363 | ||
28f540f4 RM |
364 | return optstring; |
365 | } | |
366 | \f | |
367 | /* Scan elements of ARGV (whose length is ARGC) for option characters | |
368 | given in OPTSTRING. | |
369 | ||
370 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
371 | then it is an option element. The characters of this element | |
372 | (aside from the initial '-') are option characters. If `getopt' | |
373 | is called repeatedly, it returns successively each of the option characters | |
374 | from each of the option elements. | |
375 | ||
376 | If `getopt' finds another option character, it returns that character, | |
377 | updating `optind' and `nextchar' so that the next call to `getopt' can | |
378 | resume the scan with the following option character or ARGV-element. | |
379 | ||
380 | If there are no more option characters, `getopt' returns `EOF'. | |
381 | Then `optind' is the index in ARGV of the first ARGV-element | |
382 | that is not an option. (The ARGV-elements have been permuted | |
383 | so that those that are not options now come last.) | |
384 | ||
385 | OPTSTRING is a string containing the legitimate option characters. | |
386 | If an option character is seen that is not listed in OPTSTRING, | |
387 | return '?' after printing an error message. If you set `opterr' to | |
388 | zero, the error message is suppressed but we still return '?'. | |
389 | ||
390 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
391 | so the following text in the same ARGV-element, or the text of the following | |
392 | ARGV-element, is returned in `optarg'. Two colons mean an option that | |
393 | wants an optional arg; if there is text in the current ARGV-element, | |
394 | it is returned in `optarg', otherwise `optarg' is set to zero. | |
395 | ||
396 | If OPTSTRING starts with `-' or `+', it requests different methods of | |
397 | handling the non-option ARGV-elements. | |
398 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
399 | ||
400 | Long-named options begin with `--' instead of `-'. | |
401 | Their names may be abbreviated as long as the abbreviation is unique | |
402 | or is an exact match for some defined option. If they have an | |
403 | argument, it follows the option name in the same ARGV-element, separated | |
404 | from the option name by a `=', or else the in next ARGV-element. | |
405 | When `getopt' finds a long-named option, it returns 0 if that option's | |
406 | `flag' field is nonzero, the value of the option's `val' field | |
407 | if the `flag' field is zero. | |
408 | ||
409 | The elements of ARGV aren't really const, because we permute them. | |
410 | But we pretend they're const in the prototype to be compatible | |
411 | with other systems. | |
412 | ||
413 | LONGOPTS is a vector of `struct option' terminated by an | |
414 | element containing a name which is zero. | |
415 | ||
416 | LONGIND returns the index in LONGOPT of the long-named option found. | |
417 | It is only valid when a long-named option has been found by the most | |
418 | recent call. | |
419 | ||
420 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
421 | long-named options. */ | |
422 | ||
423 | int | |
424 | _getopt_internal (argc, argv, optstring, longopts, longind, long_only) | |
425 | int argc; | |
426 | char *const *argv; | |
427 | const char *optstring; | |
428 | const struct option *longopts; | |
429 | int *longind; | |
430 | int long_only; | |
431 | { | |
432 | optarg = NULL; | |
433 | ||
434 | if (optind == 0) | |
1474b80f RM |
435 | { |
436 | optstring = _getopt_initialize (optstring); | |
437 | optind = 1; /* Don't scan ARGV[0], the program name. */ | |
438 | } | |
28f540f4 | 439 | |
b07c5668 RM |
440 | /* Test whether ARGV[optind] points to a non-option argument. |
441 | Either it does not have option syntax, or there is an environment flag | |
442 | from the shell indicating it is not an option. */ | |
443 | #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ | |
444 | || (optind < nonoption_flags_len \ | |
445 | && nonoption_flags[optind] == '1')) | |
446 | ||
28f540f4 RM |
447 | if (nextchar == NULL || *nextchar == '\0') |
448 | { | |
449 | /* Advance to the next ARGV-element. */ | |
450 | ||
e335fa38 MB |
451 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been |
452 | moved back by the user (who may also have changed the arguments). */ | |
453 | if (last_nonopt > optind) | |
454 | last_nonopt = optind; | |
455 | if (first_nonopt > optind) | |
456 | first_nonopt = optind; | |
457 | ||
28f540f4 RM |
458 | if (ordering == PERMUTE) |
459 | { | |
460 | /* If we have just processed some options following some non-options, | |
461 | exchange them so that the options come first. */ | |
462 | ||
463 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
464 | exchange ((char **) argv); | |
465 | else if (last_nonopt != optind) | |
466 | first_nonopt = optind; | |
467 | ||
468 | /* Skip any additional non-options | |
469 | and extend the range of non-options previously skipped. */ | |
470 | ||
b07c5668 | 471 | while (optind < argc && NONOPTION_P) |
28f540f4 RM |
472 | optind++; |
473 | last_nonopt = optind; | |
474 | } | |
475 | ||
476 | /* The special ARGV-element `--' means premature end of options. | |
477 | Skip it like a null option, | |
478 | then exchange with previous non-options as if it were an option, | |
479 | then skip everything else like a non-option. */ | |
480 | ||
481 | if (optind != argc && !strcmp (argv[optind], "--")) | |
482 | { | |
483 | optind++; | |
484 | ||
485 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
486 | exchange ((char **) argv); | |
487 | else if (first_nonopt == last_nonopt) | |
488 | first_nonopt = optind; | |
489 | last_nonopt = argc; | |
490 | ||
491 | optind = argc; | |
492 | } | |
493 | ||
494 | /* If we have done all the ARGV-elements, stop the scan | |
495 | and back over any non-options that we skipped and permuted. */ | |
496 | ||
497 | if (optind == argc) | |
498 | { | |
499 | /* Set the next-arg-index to point at the non-options | |
500 | that we previously skipped, so the caller will digest them. */ | |
501 | if (first_nonopt != last_nonopt) | |
502 | optind = first_nonopt; | |
503 | return EOF; | |
504 | } | |
505 | ||
506 | /* If we have come to a non-option and did not permute it, | |
507 | either stop the scan or describe it to the caller and pass it by. */ | |
508 | ||
b07c5668 | 509 | if (NONOPTION_P) |
28f540f4 RM |
510 | { |
511 | if (ordering == REQUIRE_ORDER) | |
512 | return EOF; | |
513 | optarg = argv[optind++]; | |
514 | return 1; | |
515 | } | |
516 | ||
517 | /* We have found another option-ARGV-element. | |
518 | Skip the initial punctuation. */ | |
519 | ||
520 | nextchar = (argv[optind] + 1 | |
521 | + (longopts != NULL && argv[optind][1] == '-')); | |
522 | } | |
523 | ||
524 | /* Decode the current option-ARGV-element. */ | |
525 | ||
526 | /* Check whether the ARGV-element is a long option. | |
527 | ||
528 | If long_only and the ARGV-element has the form "-f", where f is | |
529 | a valid short option, don't consider it an abbreviated form of | |
530 | a long option that starts with f. Otherwise there would be no | |
531 | way to give the -f short option. | |
532 | ||
533 | On the other hand, if there's a long option "fubar" and | |
534 | the ARGV-element is "-fu", do consider that an abbreviation of | |
535 | the long option, just like "--fu", and not "-f" with arg "u". | |
536 | ||
537 | This distinction seems to be the most useful approach. */ | |
538 | ||
539 | if (longopts != NULL | |
540 | && (argv[optind][1] == '-' | |
541 | || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) | |
542 | { | |
543 | char *nameend; | |
544 | const struct option *p; | |
545 | const struct option *pfound = NULL; | |
546 | int exact = 0; | |
547 | int ambig = 0; | |
cccda09f | 548 | int indfound = -1; |
28f540f4 RM |
549 | int option_index; |
550 | ||
551 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | |
552 | /* Do nothing. */ ; | |
553 | ||
554 | /* Test all long options for either exact match | |
555 | or abbreviated matches. */ | |
556 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
557 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
558 | { | |
cccda09f UD |
559 | if ((unsigned int) (nameend - nextchar) |
560 | == (unsigned int) strlen (p->name)) | |
28f540f4 RM |
561 | { |
562 | /* Exact match found. */ | |
563 | pfound = p; | |
564 | indfound = option_index; | |
565 | exact = 1; | |
566 | break; | |
567 | } | |
568 | else if (pfound == NULL) | |
569 | { | |
570 | /* First nonexact match found. */ | |
571 | pfound = p; | |
572 | indfound = option_index; | |
573 | } | |
574 | else | |
575 | /* Second or later nonexact match found. */ | |
576 | ambig = 1; | |
577 | } | |
578 | ||
579 | if (ambig && !exact) | |
580 | { | |
581 | if (opterr) | |
879bf2e6 | 582 | fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
28f540f4 RM |
583 | argv[0], argv[optind]); |
584 | nextchar += strlen (nextchar); | |
585 | optind++; | |
d1c57d0c | 586 | optopt = 0; |
28f540f4 RM |
587 | return '?'; |
588 | } | |
589 | ||
590 | if (pfound != NULL) | |
591 | { | |
592 | option_index = indfound; | |
593 | optind++; | |
594 | if (*nameend) | |
595 | { | |
596 | /* Don't test has_arg with >, because some C compilers don't | |
597 | allow it to be used on enums. */ | |
598 | if (pfound->has_arg) | |
599 | optarg = nameend + 1; | |
600 | else | |
601 | { | |
602 | if (opterr) | |
0ad46177 RM |
603 | if (argv[optind - 1][1] == '-') |
604 | /* --option */ | |
605 | fprintf (stderr, | |
879bf2e6 | 606 | _("%s: option `--%s' doesn't allow an argument\n"), |
0ad46177 RM |
607 | argv[0], pfound->name); |
608 | else | |
609 | /* +option or -option */ | |
610 | fprintf (stderr, | |
879bf2e6 | 611 | _("%s: option `%c%s' doesn't allow an argument\n"), |
0ad46177 RM |
612 | argv[0], argv[optind - 1][0], pfound->name); |
613 | ||
28f540f4 | 614 | nextchar += strlen (nextchar); |
d1c57d0c MB |
615 | |
616 | optopt = pfound->val; | |
28f540f4 RM |
617 | return '?'; |
618 | } | |
619 | } | |
620 | else if (pfound->has_arg == 1) | |
621 | { | |
622 | if (optind < argc) | |
623 | optarg = argv[optind++]; | |
624 | else | |
625 | { | |
626 | if (opterr) | |
0ad46177 | 627 | fprintf (stderr, |
879bf2e6 | 628 | _("%s: option `%s' requires an argument\n"), |
0ad46177 | 629 | argv[0], argv[optind - 1]); |
28f540f4 | 630 | nextchar += strlen (nextchar); |
d1c57d0c | 631 | optopt = pfound->val; |
28f540f4 RM |
632 | return optstring[0] == ':' ? ':' : '?'; |
633 | } | |
634 | } | |
635 | nextchar += strlen (nextchar); | |
636 | if (longind != NULL) | |
637 | *longind = option_index; | |
638 | if (pfound->flag) | |
639 | { | |
640 | *(pfound->flag) = pfound->val; | |
641 | return 0; | |
642 | } | |
643 | return pfound->val; | |
644 | } | |
645 | ||
646 | /* Can't find it as a long option. If this is not getopt_long_only, | |
647 | or the option starts with '--' or is not a valid short | |
648 | option, then it's an error. | |
649 | Otherwise interpret it as a short option. */ | |
650 | if (!long_only || argv[optind][1] == '-' | |
651 | || my_index (optstring, *nextchar) == NULL) | |
652 | { | |
653 | if (opterr) | |
654 | { | |
655 | if (argv[optind][1] == '-') | |
656 | /* --option */ | |
879bf2e6 | 657 | fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
28f540f4 RM |
658 | argv[0], nextchar); |
659 | else | |
660 | /* +option or -option */ | |
879bf2e6 | 661 | fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
28f540f4 RM |
662 | argv[0], argv[optind][0], nextchar); |
663 | } | |
664 | nextchar = (char *) ""; | |
665 | optind++; | |
d1c57d0c | 666 | optopt = 0; |
28f540f4 RM |
667 | return '?'; |
668 | } | |
669 | } | |
670 | ||
671 | /* Look at and handle the next short option-character. */ | |
672 | ||
673 | { | |
674 | char c = *nextchar++; | |
675 | char *temp = my_index (optstring, c); | |
676 | ||
677 | /* Increment `optind' when we start to process its last character. */ | |
678 | if (*nextchar == '\0') | |
679 | ++optind; | |
680 | ||
681 | if (temp == NULL || c == ':') | |
682 | { | |
683 | if (opterr) | |
684 | { | |
685 | if (posixly_correct) | |
686 | /* 1003.2 specifies the format of this message. */ | |
879bf2e6 | 687 | fprintf (stderr, _("%s: illegal option -- %c\n"), |
0ad46177 | 688 | argv[0], c); |
28f540f4 | 689 | else |
879bf2e6 | 690 | fprintf (stderr, _("%s: invalid option -- %c\n"), |
0ad46177 | 691 | argv[0], c); |
28f540f4 RM |
692 | } |
693 | optopt = c; | |
694 | return '?'; | |
695 | } | |
11336c16 UD |
696 | /* Convenience. Treat POSIX -W foo same as long option --foo */ |
697 | if (temp[0] == 'W' && temp[1] == ';') | |
698 | { | |
699 | char *nameend; | |
700 | const struct option *p; | |
701 | const struct option *pfound = NULL; | |
702 | int exact = 0; | |
703 | int ambig = 0; | |
d41c6f61 | 704 | int indfound = 0; |
11336c16 UD |
705 | int option_index; |
706 | ||
707 | /* This is an option that requires an argument. */ | |
708 | if (*nextchar != '\0') | |
709 | { | |
710 | optarg = nextchar; | |
711 | /* If we end this ARGV-element by taking the rest as an arg, | |
712 | we must advance to the next element now. */ | |
713 | optind++; | |
714 | } | |
715 | else if (optind == argc) | |
716 | { | |
717 | if (opterr) | |
718 | { | |
719 | /* 1003.2 specifies the format of this message. */ | |
720 | fprintf (stderr, | |
721 | gettext ("%s: option requires an argument -- %c\n"), | |
722 | argv[0], c); | |
723 | } | |
724 | optopt = c; | |
725 | if (optstring[0] == ':') | |
726 | c = ':'; | |
727 | else | |
728 | c = '?'; | |
729 | } | |
730 | else | |
731 | /* We already incremented `optind' once; | |
732 | increment it again when taking next ARGV-elt as argument. */ | |
733 | optarg = argv[optind++]; | |
734 | ||
735 | /* optarg is now the argument, see if it's in the | |
736 | table of longopts. */ | |
737 | ||
738 | for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) | |
739 | /* Do nothing. */ ; | |
740 | ||
741 | /* Test all long options for either exact match | |
742 | or abbreviated matches. */ | |
743 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
744 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
745 | { | |
d41c6f61 | 746 | if ((unsigned int) (nameend - nextchar) == strlen (p->name)) |
11336c16 UD |
747 | { |
748 | /* Exact match found. */ | |
749 | pfound = p; | |
750 | indfound = option_index; | |
751 | exact = 1; | |
752 | break; | |
753 | } | |
754 | else if (pfound == NULL) | |
755 | { | |
756 | /* First nonexact match found. */ | |
757 | pfound = p; | |
758 | indfound = option_index; | |
759 | } | |
760 | else | |
761 | /* Second or later nonexact match found. */ | |
762 | ambig = 1; | |
763 | } | |
764 | if (ambig && !exact) | |
765 | { | |
766 | if (opterr) | |
767 | fprintf (stderr, gettext ("%s: option `-W %s' is ambiguous\n"), | |
768 | argv[0], argv[optind]); | |
769 | nextchar += strlen (nextchar); | |
770 | optind++; | |
771 | return '?'; | |
772 | } | |
773 | if (pfound != NULL) | |
774 | { | |
775 | option_index = indfound; | |
776 | if (*nameend) | |
777 | { | |
778 | /* Don't test has_arg with >, because some C compilers don't | |
779 | allow it to be used on enums. */ | |
780 | if (pfound->has_arg) | |
781 | optarg = nameend + 1; | |
782 | else | |
783 | { | |
784 | if (opterr) | |
785 | fprintf (stderr, | |
786 | gettext ("%s: option `-W %s' doesn't allow an argument\n"), | |
787 | argv[0], pfound->name); | |
788 | ||
789 | nextchar += strlen (nextchar); | |
790 | return '?'; | |
791 | } | |
792 | } | |
793 | else if (pfound->has_arg == 1) | |
794 | { | |
795 | if (optind < argc) | |
796 | optarg = argv[optind++]; | |
797 | else | |
798 | { | |
799 | if (opterr) | |
800 | fprintf (stderr, | |
801 | gettext ("%s: option `%s' requires an argument\n"), | |
802 | argv[0], argv[optind - 1]); | |
803 | nextchar += strlen (nextchar); | |
804 | return optstring[0] == ':' ? ':' : '?'; | |
805 | } | |
806 | } | |
807 | nextchar += strlen (nextchar); | |
808 | if (longind != NULL) | |
809 | *longind = option_index; | |
810 | if (pfound->flag) | |
811 | { | |
812 | *(pfound->flag) = pfound->val; | |
813 | return 0; | |
814 | } | |
815 | return pfound->val; | |
816 | } | |
817 | nextchar = NULL; | |
818 | return 'W'; /* Let the application handle it. */ | |
819 | } | |
28f540f4 RM |
820 | if (temp[1] == ':') |
821 | { | |
822 | if (temp[2] == ':') | |
823 | { | |
824 | /* This is an option that accepts an argument optionally. */ | |
825 | if (*nextchar != '\0') | |
826 | { | |
827 | optarg = nextchar; | |
828 | optind++; | |
829 | } | |
830 | else | |
831 | optarg = NULL; | |
832 | nextchar = NULL; | |
833 | } | |
834 | else | |
835 | { | |
836 | /* This is an option that requires an argument. */ | |
837 | if (*nextchar != '\0') | |
838 | { | |
839 | optarg = nextchar; | |
840 | /* If we end this ARGV-element by taking the rest as an arg, | |
841 | we must advance to the next element now. */ | |
842 | optind++; | |
843 | } | |
844 | else if (optind == argc) | |
845 | { | |
846 | if (opterr) | |
847 | { | |
848 | /* 1003.2 specifies the format of this message. */ | |
0ad46177 | 849 | fprintf (stderr, |
879bf2e6 | 850 | _("%s: option requires an argument -- %c\n"), |
0ad46177 | 851 | argv[0], c); |
28f540f4 RM |
852 | } |
853 | optopt = c; | |
854 | if (optstring[0] == ':') | |
855 | c = ':'; | |
856 | else | |
857 | c = '?'; | |
858 | } | |
859 | else | |
860 | /* We already incremented `optind' once; | |
861 | increment it again when taking next ARGV-elt as argument. */ | |
862 | optarg = argv[optind++]; | |
863 | nextchar = NULL; | |
864 | } | |
865 | } | |
866 | return c; | |
867 | } | |
868 | } | |
869 | ||
870 | int | |
871 | getopt (argc, argv, optstring) | |
872 | int argc; | |
873 | char *const *argv; | |
874 | const char *optstring; | |
875 | { | |
876 | return _getopt_internal (argc, argv, optstring, | |
877 | (const struct option *) 0, | |
878 | (int *) 0, | |
879 | 0); | |
880 | } | |
881 | ||
882 | #endif /* _LIBC or not __GNU_LIBRARY__. */ | |
883 | \f | |
884 | #ifdef TEST | |
885 | ||
886 | /* Compile with -DTEST to make an executable for use in testing | |
887 | the above definition of `getopt'. */ | |
888 | ||
889 | int | |
890 | main (argc, argv) | |
891 | int argc; | |
892 | char **argv; | |
893 | { | |
894 | int c; | |
895 | int digit_optind = 0; | |
896 | ||
897 | while (1) | |
898 | { | |
899 | int this_option_optind = optind ? optind : 1; | |
900 | ||
901 | c = getopt (argc, argv, "abc:d:0123456789"); | |
902 | if (c == EOF) | |
903 | break; | |
904 | ||
905 | switch (c) | |
906 | { | |
907 | case '0': | |
908 | case '1': | |
909 | case '2': | |
910 | case '3': | |
911 | case '4': | |
912 | case '5': | |
913 | case '6': | |
914 | case '7': | |
915 | case '8': | |
916 | case '9': | |
917 | if (digit_optind != 0 && digit_optind != this_option_optind) | |
918 | printf ("digits occur in two different argv-elements.\n"); | |
919 | digit_optind = this_option_optind; | |
920 | printf ("option %c\n", c); | |
921 | break; | |
922 | ||
923 | case 'a': | |
924 | printf ("option a\n"); | |
925 | break; | |
926 | ||
927 | case 'b': | |
928 | printf ("option b\n"); | |
929 | break; | |
930 | ||
931 | case 'c': | |
932 | printf ("option c with value `%s'\n", optarg); | |
933 | break; | |
934 | ||
935 | case '?': | |
936 | break; | |
937 | ||
938 | default: | |
939 | printf ("?? getopt returned character code 0%o ??\n", c); | |
940 | } | |
941 | } | |
942 | ||
943 | if (optind < argc) | |
944 | { | |
945 | printf ("non-option ARGV-elements: "); | |
946 | while (optind < argc) | |
947 | printf ("%s ", argv[optind++]); | |
948 | printf ("\n"); | |
949 | } | |
950 | ||
951 | exit (0); | |
952 | } | |
953 | ||
954 | #endif /* TEST */ |