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1 | /* Getopt for GNU. |
2 | NOTE: getopt is now part of the C library, so if you don't know what | |
3 | "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu | |
4 | before changing it! | |
5 | ||
6 | Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97 | |
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 not, | |
24 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | Boston, MA 02111-1307, 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 | ||
30 | #include "common.h" | |
31 | ||
32 | #ifndef IGNORE_GETOPT | |
33 | ||
34 | #ifndef _NO_PROTO | |
35 | #define _NO_PROTO | |
36 | #endif | |
37 | ||
38 | #if !defined (__STDC__) || !__STDC__ | |
39 | /* This is a separate conditional since some stdc systems | |
40 | reject `defined (const)'. */ | |
41 | #ifndef const | |
42 | #define const | |
43 | #endif | |
44 | #endif | |
45 | ||
46 | /* Comment out all this code if we are using the GNU C Library, and are not | |
47 | actually compiling the library itself. This code is part of the GNU C | |
48 | Library, but also included in many other GNU distributions. Compiling | |
49 | and linking in this code is a waste when using the GNU C library | |
50 | (especially if it is a shared library). Rather than having every GNU | |
51 | program understand `configure --with-gnu-libc' and omit the object files, | |
52 | it is simpler to just do this in the source for each such file. */ | |
53 | ||
54 | #define GETOPT_INTERFACE_VERSION 2 | |
55 | #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 | |
56 | #include <gnu-versions.h> | |
57 | #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION | |
58 | #define ELIDE_CODE | |
59 | #endif | |
60 | #endif | |
61 | ||
62 | #ifndef ELIDE_CODE | |
63 | ||
64 | ||
65 | /* This needs to come after some library #include | |
66 | to get __GNU_LIBRARY__ defined. */ | |
67 | #ifdef __GNU_LIBRARY__ | |
68 | /* Don't include stdlib.h for non-GNU C libraries because some of them | |
69 | contain conflicting prototypes for getopt. */ | |
70 | #include <stdlib.h> | |
71 | #include <unistd.h> | |
72 | #endif /* GNU C library. */ | |
73 | ||
74 | #ifdef VMS | |
75 | #include <unixlib.h> | |
76 | #endif | |
77 | ||
78 | #if defined (WIN32) && !defined (__CYGWIN32__) | |
79 | /* It's not Unix, really. See? Capital letters. */ | |
80 | #include <windows.h> | |
81 | #define getpid() GetCurrentProcessId() | |
82 | #endif | |
83 | ||
84 | #ifndef _ | |
85 | /* This is for other GNU distributions with internationalized messages. | |
86 | When compiling libc, the _ macro is predefined. */ | |
87 | #ifdef HAVE_LIBINTL_H | |
88 | # include <libintl.h> | |
89 | # define _(msgid) gettext (msgid) | |
90 | #else | |
91 | # define _(msgid) (msgid) | |
92 | #endif | |
93 | #endif | |
94 | ||
95 | /* This version of `getopt' appears to the caller like standard Unix `getopt' | |
96 | but it behaves differently for the user, since it allows the user | |
97 | to intersperse the options with the other arguments. | |
98 | ||
99 | As `getopt' works, it permutes the elements of ARGV so that, | |
100 | when it is done, all the options precede everything else. Thus | |
101 | all application programs are extended to handle flexible argument order. | |
102 | ||
103 | Setting the environment variable POSIXLY_CORRECT disables permutation. | |
104 | Then the behavior is completely standard. | |
105 | ||
106 | GNU application programs can use a third alternative mode in which | |
107 | they can distinguish the relative order of options and other arguments. */ | |
108 | ||
109 | #include "getopt.h" | |
110 | ||
111 | /* For communication from `getopt' to the caller. | |
112 | When `getopt' finds an option that takes an argument, | |
113 | the argument value is returned here. | |
114 | Also, when `ordering' is RETURN_IN_ORDER, | |
115 | each non-option ARGV-element is returned here. */ | |
116 | ||
117 | char *optarg = NULL; | |
118 | ||
119 | /* Index in ARGV of the next element to be scanned. | |
120 | This is used for communication to and from the caller | |
121 | and for communication between successive calls to `getopt'. | |
122 | ||
123 | On entry to `getopt', zero means this is the first call; initialize. | |
124 | ||
125 | When `getopt' returns -1, this is the index of the first of the | |
126 | non-option elements that the caller should itself scan. | |
127 | ||
128 | Otherwise, `optind' communicates from one call to the next | |
129 | how much of ARGV has been scanned so far. */ | |
130 | ||
131 | /* 1003.2 says this must be 1 before any call. */ | |
132 | int optind = 1; | |
133 | ||
134 | /* Formerly, initialization of getopt depended on optind==0, which | |
135 | causes problems with re-calling getopt as programs generally don't | |
136 | know that. */ | |
137 | ||
138 | int __getopt_initialized = 0; | |
139 | ||
140 | /* The next char to be scanned in the option-element | |
141 | in which the last option character we returned was found. | |
142 | This allows us to pick up the scan where we left off. | |
143 | ||
144 | If this is zero, or a null string, it means resume the scan | |
145 | by advancing to the next ARGV-element. */ | |
146 | ||
147 | static char *nextchar; | |
148 | ||
149 | /* Callers store zero here to inhibit the error message | |
150 | for unrecognized options. */ | |
151 | ||
152 | int opterr = 1; | |
153 | ||
154 | /* Set to an option character which was unrecognized. | |
155 | This must be initialized on some systems to avoid linking in the | |
156 | system's own getopt implementation. */ | |
157 | ||
158 | int optopt = '?'; | |
159 | ||
160 | /* Describe how to deal with options that follow non-option ARGV-elements. | |
161 | ||
162 | If the caller did not specify anything, | |
163 | the default is REQUIRE_ORDER if the environment variable | |
164 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | |
165 | ||
166 | REQUIRE_ORDER means don't recognize them as options; | |
167 | stop option processing when the first non-option is seen. | |
168 | This is what Unix does. | |
169 | This mode of operation is selected by either setting the environment | |
170 | variable POSIXLY_CORRECT, or using `+' as the first character | |
171 | of the list of option characters. | |
172 | ||
173 | PERMUTE is the default. We permute the contents of ARGV as we scan, | |
174 | so that eventually all the non-options are at the end. This allows options | |
175 | to be given in any order, even with programs that were not written to | |
176 | expect this. | |
177 | ||
178 | RETURN_IN_ORDER is an option available to programs that were written | |
179 | to expect options and other ARGV-elements in any order and that care about | |
180 | the ordering of the two. We describe each non-option ARGV-element | |
181 | as if it were the argument of an option with character code 1. | |
182 | Using `-' as the first character of the list of option characters | |
183 | selects this mode of operation. | |
184 | ||
185 | The special argument `--' forces an end of option-scanning regardless | |
186 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | |
187 | `--' can cause `getopt' to return -1 with `optind' != ARGC. */ | |
188 | ||
189 | static enum | |
190 | { | |
191 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER | |
192 | } ordering; | |
193 | ||
194 | /* Value of POSIXLY_CORRECT environment variable. */ | |
195 | static char *posixly_correct; | |
196 | \f | |
197 | ||
198 | #ifdef __GNU_LIBRARY__ | |
199 | /* We want to avoid inclusion of string.h with non-GNU libraries | |
200 | because there are many ways it can cause trouble. | |
201 | On some systems, it contains special magic macros that don't work | |
202 | in GCC. */ | |
203 | #define my_index strchr | |
204 | #else | |
205 | ||
206 | /* Avoid depending on library functions or files | |
207 | whose names are inconsistent. */ | |
208 | ||
209 | char *getenv (); | |
210 | ||
211 | static char * | |
212 | my_index (str, chr) | |
213 | const char *str; | |
214 | int chr; | |
215 | { | |
216 | while (*str) | |
217 | { | |
218 | if (*str == chr) | |
219 | return (char *) str; | |
220 | str++; | |
221 | } | |
222 | return 0; | |
223 | } | |
224 | ||
225 | /* If using GCC, we can safely declare strlen this way. | |
226 | If not using GCC, it is ok not to declare it. */ | |
227 | #ifdef __GNUC__ | |
228 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | |
229 | That was relevant to code that was here before. */ | |
230 | #if !defined (__STDC__) || !__STDC__ | |
231 | /* gcc with -traditional declares the built-in strlen to return int, | |
232 | and has done so at least since version 2.4.5. -- rms. */ | |
233 | extern int strlen (const char *); | |
234 | #endif /* not __STDC__ */ | |
235 | #endif /* __GNUC__ */ | |
236 | ||
237 | #endif /* not __GNU_LIBRARY__ */ | |
238 | \f | |
239 | /* Handle permutation of arguments. */ | |
240 | ||
241 | /* Describe the part of ARGV that contains non-options that have | |
242 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | |
243 | `last_nonopt' is the index after the last of them. */ | |
244 | ||
245 | static int first_nonopt; | |
246 | static int last_nonopt; | |
247 | ||
248 | #ifdef _LIBC | |
249 | /* Bash 2.0 gives us an environment variable containing flags | |
250 | indicating ARGV elements that should not be considered arguments. */ | |
251 | ||
252 | static const char *nonoption_flags; | |
253 | static int nonoption_flags_len; | |
254 | ||
255 | static int original_argc; | |
256 | static char *const *original_argv; | |
257 | ||
258 | /* Make sure the environment variable bash 2.0 puts in the environment | |
259 | is valid for the getopt call we must make sure that the ARGV passed | |
260 | to getopt is that one passed to the process. */ | |
261 | static void store_args (int argc, char *const *argv) __attribute__ ((unused)); | |
262 | static void | |
263 | store_args (int argc, char *const *argv) | |
264 | { | |
265 | /* XXX This is no good solution. We should rather copy the args so | |
266 | that we can compare them later. But we must not use malloc(3). */ | |
267 | original_argc = argc; | |
268 | original_argv = argv; | |
269 | } | |
270 | text_set_element (__libc_subinit, store_args); | |
271 | #endif | |
272 | ||
273 | /* Exchange two adjacent subsequences of ARGV. | |
274 | One subsequence is elements [first_nonopt,last_nonopt) | |
275 | which contains all the non-options that have been skipped so far. | |
276 | The other is elements [last_nonopt,optind), which contains all | |
277 | the options processed since those non-options were skipped. | |
278 | ||
279 | `first_nonopt' and `last_nonopt' are relocated so that they describe | |
280 | the new indices of the non-options in ARGV after they are moved. */ | |
281 | ||
282 | #if defined (__STDC__) && __STDC__ | |
283 | static void exchange (char **); | |
284 | #endif | |
285 | ||
286 | static void | |
287 | exchange (argv) | |
288 | char **argv; | |
289 | { | |
290 | int bottom = first_nonopt; | |
291 | int middle = last_nonopt; | |
292 | int top = optind; | |
293 | char *tem; | |
294 | ||
295 | /* Exchange the shorter segment with the far end of the longer segment. | |
296 | That puts the shorter segment into the right place. | |
297 | It leaves the longer segment in the right place overall, | |
298 | but it consists of two parts that need to be swapped next. */ | |
299 | ||
300 | while (top > middle && middle > bottom) | |
301 | { | |
302 | if (top - middle > middle - bottom) | |
303 | { | |
304 | /* Bottom segment is the short one. */ | |
305 | int len = middle - bottom; | |
306 | register int i; | |
307 | ||
308 | /* Swap it with the top part of the top segment. */ | |
309 | for (i = 0; i < len; i++) | |
310 | { | |
311 | tem = argv[bottom + i]; | |
312 | argv[bottom + i] = argv[top - (middle - bottom) + i]; | |
313 | argv[top - (middle - bottom) + i] = tem; | |
314 | } | |
315 | /* Exclude the moved bottom segment from further swapping. */ | |
316 | top -= len; | |
317 | } | |
318 | else | |
319 | { | |
320 | /* Top segment is the short one. */ | |
321 | int len = top - middle; | |
322 | register int i; | |
323 | ||
324 | /* Swap it with the bottom part of the bottom segment. */ | |
325 | for (i = 0; i < len; i++) | |
326 | { | |
327 | tem = argv[bottom + i]; | |
328 | argv[bottom + i] = argv[middle + i]; | |
329 | argv[middle + i] = tem; | |
330 | } | |
331 | /* Exclude the moved top segment from further swapping. */ | |
332 | bottom += len; | |
333 | } | |
334 | } | |
335 | ||
336 | /* Update records for the slots the non-options now occupy. */ | |
337 | ||
338 | first_nonopt += (optind - last_nonopt); | |
339 | last_nonopt = optind; | |
340 | } | |
341 | ||
342 | /* Initialize the internal data when the first call is made. */ | |
343 | ||
344 | #if defined (__STDC__) && __STDC__ | |
345 | static const char *_getopt_initialize (int, char *const *, const char *); | |
346 | #endif | |
347 | static const char * | |
348 | _getopt_initialize (argc, argv, optstring) | |
349 | int argc; | |
350 | char *const *argv; | |
351 | const char *optstring; | |
352 | { | |
353 | #ifndef _LIBC | |
354 | (void)argc; (void)argv; | |
355 | #endif | |
356 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 | |
357 | is the program name); the sequence of previously skipped | |
358 | non-option ARGV-elements is empty. */ | |
359 | ||
360 | first_nonopt = last_nonopt = optind = 1; | |
361 | ||
362 | nextchar = NULL; | |
363 | ||
364 | posixly_correct = getenv ("POSIXLY_CORRECT"); | |
365 | ||
366 | /* Determine how to handle the ordering of options and nonoptions. */ | |
367 | ||
368 | if (optstring[0] == '-') | |
369 | { | |
370 | ordering = RETURN_IN_ORDER; | |
371 | ++optstring; | |
372 | } | |
373 | else if (optstring[0] == '+') | |
374 | { | |
375 | ordering = REQUIRE_ORDER; | |
376 | ++optstring; | |
377 | } | |
378 | else if (posixly_correct != NULL) | |
379 | ordering = REQUIRE_ORDER; | |
380 | else | |
381 | ordering = PERMUTE; | |
382 | ||
383 | #ifdef _LIBC | |
384 | if (posixly_correct == NULL | |
385 | && argc == original_argc && argv == original_argv) | |
386 | { | |
387 | /* Bash 2.0 puts a special variable in the environment for each | |
388 | command it runs, specifying which ARGV elements are the results of | |
389 | file name wildcard expansion and therefore should not be | |
390 | considered as options. */ | |
391 | char var[100]; | |
392 | sprintf (var, "_%d_GNU_nonoption_argv_flags_", getpid ()); | |
393 | nonoption_flags = getenv (var); | |
394 | if (nonoption_flags == NULL) | |
395 | nonoption_flags_len = 0; | |
396 | else | |
397 | nonoption_flags_len = strlen (nonoption_flags); | |
398 | } | |
399 | else | |
400 | nonoption_flags_len = 0; | |
401 | #endif | |
402 | ||
403 | return optstring; | |
404 | } | |
405 | \f | |
406 | /* Scan elements of ARGV (whose length is ARGC) for option characters | |
407 | given in OPTSTRING. | |
408 | ||
409 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
410 | then it is an option element. The characters of this element | |
411 | (aside from the initial '-') are option characters. If `getopt' | |
412 | is called repeatedly, it returns successively each of the option characters | |
413 | from each of the option elements. | |
414 | ||
415 | If `getopt' finds another option character, it returns that character, | |
416 | updating `optind' and `nextchar' so that the next call to `getopt' can | |
417 | resume the scan with the following option character or ARGV-element. | |
418 | ||
419 | If there are no more option characters, `getopt' returns -1. | |
420 | Then `optind' is the index in ARGV of the first ARGV-element | |
421 | that is not an option. (The ARGV-elements have been permuted | |
422 | so that those that are not options now come last.) | |
423 | ||
424 | OPTSTRING is a string containing the legitimate option characters. | |
425 | If an option character is seen that is not listed in OPTSTRING, | |
426 | return '?' after printing an error message. If you set `opterr' to | |
427 | zero, the error message is suppressed but we still return '?'. | |
428 | ||
429 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
430 | so the following text in the same ARGV-element, or the text of the following | |
431 | ARGV-element, is returned in `optarg'. Two colons mean an option that | |
432 | wants an optional arg; if there is text in the current ARGV-element, | |
433 | it is returned in `optarg', otherwise `optarg' is set to zero. | |
434 | ||
435 | If OPTSTRING starts with `-' or `+', it requests different methods of | |
436 | handling the non-option ARGV-elements. | |
437 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
438 | ||
439 | Long-named options begin with `--' instead of `-'. | |
440 | Their names may be abbreviated as long as the abbreviation is unique | |
441 | or is an exact match for some defined option. If they have an | |
442 | argument, it follows the option name in the same ARGV-element, separated | |
443 | from the option name by a `=', or else the in next ARGV-element. | |
444 | When `getopt' finds a long-named option, it returns 0 if that option's | |
445 | `flag' field is nonzero, the value of the option's `val' field | |
446 | if the `flag' field is zero. | |
447 | ||
448 | The elements of ARGV aren't really const, because we permute them. | |
449 | But we pretend they're const in the prototype to be compatible | |
450 | with other systems. | |
451 | ||
452 | LONGOPTS is a vector of `struct option' terminated by an | |
453 | element containing a name which is zero. | |
454 | ||
455 | LONGIND returns the index in LONGOPT of the long-named option found. | |
456 | It is only valid when a long-named option has been found by the most | |
457 | recent call. | |
458 | ||
459 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
460 | long-named options. */ | |
461 | ||
462 | int | |
463 | _getopt_internal (argc, argv, optstring, longopts, longind, long_only) | |
464 | int argc; | |
465 | char *const *argv; | |
466 | const char *optstring; | |
467 | const struct option *longopts; | |
468 | int *longind; | |
469 | int long_only; | |
470 | { | |
471 | optarg = NULL; | |
472 | ||
473 | if (!__getopt_initialized || optind == 0) | |
474 | { | |
475 | optstring = _getopt_initialize (argc, argv, optstring); | |
476 | optind = 1; /* Don't scan ARGV[0], the program name. */ | |
477 | __getopt_initialized = 1; | |
478 | } | |
479 | ||
480 | /* Test whether ARGV[optind] points to a non-option argument. | |
481 | Either it does not have option syntax, or there is an environment flag | |
482 | from the shell indicating it is not an option. The later information | |
483 | is only used when the used in the GNU libc. */ | |
484 | #ifdef _LIBC | |
485 | #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ | |
486 | || (optind < nonoption_flags_len \ | |
487 | && nonoption_flags[optind] == '1')) | |
488 | #else | |
489 | #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') | |
490 | #endif | |
491 | ||
492 | if (nextchar == NULL || *nextchar == '\0') | |
493 | { | |
494 | /* Advance to the next ARGV-element. */ | |
495 | ||
496 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been | |
497 | moved back by the user (who may also have changed the arguments). */ | |
498 | if (last_nonopt > optind) | |
499 | last_nonopt = optind; | |
500 | if (first_nonopt > optind) | |
501 | first_nonopt = optind; | |
502 | ||
503 | if (ordering == PERMUTE) | |
504 | { | |
505 | /* If we have just processed some options following some non-options, | |
506 | exchange them so that the options come first. */ | |
507 | ||
508 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
509 | exchange ((char **) argv); | |
510 | else if (last_nonopt != optind) | |
511 | first_nonopt = optind; | |
512 | ||
513 | /* Skip any additional non-options | |
514 | and extend the range of non-options previously skipped. */ | |
515 | ||
516 | while (optind < argc && NONOPTION_P) | |
517 | optind++; | |
518 | last_nonopt = optind; | |
519 | } | |
520 | ||
521 | /* The special ARGV-element `--' means premature end of options. | |
522 | Skip it like a null option, | |
523 | then exchange with previous non-options as if it were an option, | |
524 | then skip everything else like a non-option. */ | |
525 | ||
526 | if (optind != argc && !strcmp (argv[optind], "--")) | |
527 | { | |
528 | optind++; | |
529 | ||
530 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
531 | exchange ((char **) argv); | |
532 | else if (first_nonopt == last_nonopt) | |
533 | first_nonopt = optind; | |
534 | last_nonopt = argc; | |
535 | ||
536 | optind = argc; | |
537 | } | |
538 | ||
539 | /* If we have done all the ARGV-elements, stop the scan | |
540 | and back over any non-options that we skipped and permuted. */ | |
541 | ||
542 | if (optind == argc) | |
543 | { | |
544 | /* Set the next-arg-index to point at the non-options | |
545 | that we previously skipped, so the caller will digest them. */ | |
546 | if (first_nonopt != last_nonopt) | |
547 | optind = first_nonopt; | |
548 | return -1; | |
549 | } | |
550 | ||
551 | /* If we have come to a non-option and did not permute it, | |
552 | either stop the scan or describe it to the caller and pass it by. */ | |
553 | ||
554 | if (NONOPTION_P) | |
555 | { | |
556 | if (ordering == REQUIRE_ORDER) | |
557 | return -1; | |
558 | optarg = argv[optind++]; | |
559 | return 1; | |
560 | } | |
561 | ||
562 | /* We have found another option-ARGV-element. | |
563 | Skip the initial punctuation. */ | |
564 | ||
565 | nextchar = (argv[optind] + 1 | |
566 | + (longopts != NULL && argv[optind][1] == '-')); | |
567 | } | |
568 | ||
569 | /* Decode the current option-ARGV-element. */ | |
570 | ||
571 | /* Check whether the ARGV-element is a long option. | |
572 | ||
573 | If long_only and the ARGV-element has the form "-f", where f is | |
574 | a valid short option, don't consider it an abbreviated form of | |
575 | a long option that starts with f. Otherwise there would be no | |
576 | way to give the -f short option. | |
577 | ||
578 | On the other hand, if there's a long option "fubar" and | |
579 | the ARGV-element is "-fu", do consider that an abbreviation of | |
580 | the long option, just like "--fu", and not "-f" with arg "u". | |
581 | ||
582 | This distinction seems to be the most useful approach. */ | |
583 | ||
584 | if (longopts != NULL | |
585 | && (argv[optind][1] == '-' | |
586 | || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) | |
587 | { | |
588 | char *nameend; | |
589 | const struct option *p; | |
590 | const struct option *pfound = NULL; | |
591 | int exact = 0; | |
592 | int ambig = 0; | |
593 | int indfound = -1; | |
594 | int option_index; | |
595 | ||
596 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | |
597 | /* Do nothing. */ ; | |
598 | ||
599 | /* Test all long options for either exact match | |
600 | or abbreviated matches. */ | |
601 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
602 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
603 | { | |
604 | if ((unsigned int) (nameend - nextchar) | |
605 | == (unsigned int) strlen (p->name)) | |
606 | { | |
607 | /* Exact match found. */ | |
608 | pfound = p; | |
609 | indfound = option_index; | |
610 | exact = 1; | |
611 | break; | |
612 | } | |
613 | else if (pfound == NULL) | |
614 | { | |
615 | /* First nonexact match found. */ | |
616 | pfound = p; | |
617 | indfound = option_index; | |
618 | } | |
619 | else | |
620 | /* Second or later nonexact match found. */ | |
621 | ambig = 1; | |
622 | } | |
623 | ||
624 | if (ambig && !exact) | |
625 | { | |
626 | if (opterr) | |
627 | fprintf (stderr, _("%s: option `%s' is ambiguous\n"), | |
628 | argv[0], argv[optind]); | |
629 | nextchar += strlen (nextchar); | |
630 | optind++; | |
631 | optopt = 0; | |
632 | return '?'; | |
633 | } | |
634 | ||
635 | if (pfound != NULL) | |
636 | { | |
637 | option_index = indfound; | |
638 | optind++; | |
639 | if (*nameend) | |
640 | { | |
641 | /* Don't test has_arg with >, because some C compilers don't | |
642 | allow it to be used on enums. */ | |
643 | if (pfound->has_arg) | |
644 | optarg = nameend + 1; | |
645 | else | |
646 | { | |
647 | if (opterr) { | |
648 | if (argv[optind - 1][1] == '-') | |
649 | /* --option */ | |
650 | fprintf (stderr, | |
651 | _("%s: option `--%s' doesn't allow an argument\n"), | |
652 | argv[0], pfound->name); | |
653 | else | |
654 | /* +option or -option */ | |
655 | fprintf (stderr, | |
656 | _("%s: option `%c%s' doesn't allow an argument\n"), | |
657 | argv[0], argv[optind - 1][0], pfound->name); | |
658 | } | |
659 | nextchar += strlen (nextchar); | |
660 | ||
661 | optopt = pfound->val; | |
662 | return '?'; | |
663 | } | |
664 | } | |
665 | else if (pfound->has_arg == 1) | |
666 | { | |
667 | if (optind < argc) | |
668 | optarg = argv[optind++]; | |
669 | else | |
670 | { | |
671 | if (opterr) | |
672 | fprintf (stderr, | |
673 | _("%s: option `%s' requires an argument\n"), | |
674 | argv[0], argv[optind - 1]); | |
675 | nextchar += strlen (nextchar); | |
676 | optopt = pfound->val; | |
677 | return optstring[0] == ':' ? ':' : '?'; | |
678 | } | |
679 | } | |
680 | nextchar += strlen (nextchar); | |
681 | if (longind != NULL) | |
682 | *longind = option_index; | |
683 | if (pfound->flag) | |
684 | { | |
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] == '-' | |
696 | || my_index (optstring, *nextchar) == NULL) | |
697 | { | |
698 | if (opterr) | |
699 | { | |
700 | if (argv[optind][1] == '-') | |
701 | /* --option */ | |
702 | fprintf (stderr, _("%s: unrecognized option `--%s'\n"), | |
703 | argv[0], nextchar); | |
704 | else | |
705 | /* +option or -option */ | |
706 | fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), | |
707 | argv[0], argv[optind][0], nextchar); | |
708 | } | |
709 | nextchar = (char *) ""; | |
710 | optind++; | |
711 | optopt = 0; | |
712 | return '?'; | |
713 | } | |
714 | } | |
715 | ||
716 | /* Look at and handle the next short option-character. */ | |
717 | ||
718 | { | |
719 | char c = *nextchar++; | |
720 | char *temp = my_index (optstring, c); | |
721 | ||
722 | /* Increment `optind' when we start to process its last character. */ | |
723 | if (*nextchar == '\0') | |
724 | ++optind; | |
725 | ||
726 | if (temp == NULL || c == ':') | |
727 | { | |
728 | if (opterr) | |
729 | { | |
730 | if (posixly_correct) | |
731 | /* 1003.2 specifies the format of this message. */ | |
732 | fprintf (stderr, _("%s: illegal option -- %c\n"), | |
733 | argv[0], c); | |
734 | else | |
735 | fprintf (stderr, _("%s: invalid option -- %c\n"), | |
736 | argv[0], c); | |
737 | } | |
738 | optopt = c; | |
739 | return '?'; | |
740 | } | |
741 | /* Convenience. Treat POSIX -W foo same as long option --foo */ | |
742 | if (temp[0] == 'W' && temp[1] == ';') | |
743 | { | |
744 | char *nameend; | |
745 | const struct option *p; | |
746 | const struct option *pfound = NULL; | |
747 | int exact = 0; | |
748 | int ambig = 0; | |
749 | int indfound = 0; | |
750 | int option_index; | |
751 | ||
752 | /* This is an option that requires an argument. */ | |
753 | if (*nextchar != '\0') | |
754 | { | |
755 | optarg = nextchar; | |
756 | /* If we end this ARGV-element by taking the rest as an arg, | |
757 | we must advance to the next element now. */ | |
758 | optind++; | |
759 | } | |
760 | else if (optind == argc) | |
761 | { | |
762 | if (opterr) | |
763 | { | |
764 | /* 1003.2 specifies the format of this message. */ | |
765 | fprintf (stderr, _("%s: option requires an argument -- %c\n"), | |
766 | argv[0], c); | |
767 | } | |
768 | optopt = c; | |
769 | if (optstring[0] == ':') | |
770 | c = ':'; | |
771 | else | |
772 | c = '?'; | |
773 | return c; | |
774 | } | |
775 | else | |
776 | /* We already incremented `optind' once; | |
777 | increment it again when taking next ARGV-elt as argument. */ | |
778 | optarg = argv[optind++]; | |
779 | ||
780 | /* optarg is now the argument, see if it's in the | |
781 | table of longopts. */ | |
782 | ||
783 | for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) | |
784 | /* Do nothing. */ ; | |
785 | ||
786 | /* Test all long options for either exact match | |
787 | or abbreviated matches. */ | |
788 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
789 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
790 | { | |
791 | if ((size_t) (nameend - nextchar) == (size_t) strlen (p->name)) | |
792 | { | |
793 | /* Exact match found. */ | |
794 | pfound = p; | |
795 | indfound = option_index; | |
796 | exact = 1; | |
797 | break; | |
798 | } | |
799 | else if (pfound == NULL) | |
800 | { | |
801 | /* First nonexact match found. */ | |
802 | pfound = p; | |
803 | indfound = option_index; | |
804 | } | |
805 | else | |
806 | /* Second or later nonexact match found. */ | |
807 | ambig = 1; | |
808 | } | |
809 | if (ambig && !exact) | |
810 | { | |
811 | if (opterr) | |
812 | fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), | |
813 | argv[0], argv[optind]); | |
814 | nextchar += strlen (nextchar); | |
815 | optind++; | |
816 | return '?'; | |
817 | } | |
818 | if (pfound != NULL) | |
819 | { | |
820 | option_index = indfound; | |
821 | if (*nameend) | |
822 | { | |
823 | /* Don't test has_arg with >, because some C compilers don't | |
824 | allow it to be used on enums. */ | |
825 | if (pfound->has_arg) | |
826 | optarg = nameend + 1; | |
827 | else | |
828 | { | |
829 | if (opterr) | |
830 | fprintf (stderr, _("\ | |
831 | %s: option `-W %s' doesn't allow an argument\n"), | |
832 | argv[0], pfound->name); | |
833 | ||
834 | nextchar += strlen (nextchar); | |
835 | return '?'; | |
836 | } | |
837 | } | |
838 | else if (pfound->has_arg == 1) | |
839 | { | |
840 | if (optind < argc) | |
841 | optarg = argv[optind++]; | |
842 | else | |
843 | { | |
844 | if (opterr) | |
845 | fprintf (stderr, | |
846 | _("%s: option `%s' requires an argument\n"), | |
847 | argv[0], argv[optind - 1]); | |
848 | nextchar += strlen (nextchar); | |
849 | return optstring[0] == ':' ? ':' : '?'; | |
850 | } | |
851 | } | |
852 | nextchar += strlen (nextchar); | |
853 | if (longind != NULL) | |
854 | *longind = option_index; | |
855 | if (pfound->flag) | |
856 | { | |
857 | *(pfound->flag) = pfound->val; | |
858 | return 0; | |
859 | } | |
860 | return pfound->val; | |
861 | } | |
862 | nextchar = NULL; | |
863 | return 'W'; /* Let the application handle it. */ | |
864 | } | |
865 | if (temp[1] == ':') | |
866 | { | |
867 | if (temp[2] == ':') | |
868 | { | |
869 | /* This is an option that accepts an argument optionally. */ | |
870 | if (*nextchar != '\0') | |
871 | { | |
872 | optarg = nextchar; | |
873 | optind++; | |
874 | } | |
875 | else | |
876 | optarg = NULL; | |
877 | nextchar = NULL; | |
878 | } | |
879 | else | |
880 | { | |
881 | /* This is an option that requires an argument. */ | |
882 | if (*nextchar != '\0') | |
883 | { | |
884 | optarg = nextchar; | |
885 | /* If we end this ARGV-element by taking the rest as an arg, | |
886 | we must advance to the next element now. */ | |
887 | optind++; | |
888 | } | |
889 | else if (optind == argc) | |
890 | { | |
891 | if (opterr) | |
892 | { | |
893 | /* 1003.2 specifies the format of this message. */ | |
894 | fprintf (stderr, | |
895 | _("%s: option requires an argument -- %c\n"), | |
896 | argv[0], c); | |
897 | } | |
898 | optopt = c; | |
899 | if (optstring[0] == ':') | |
900 | c = ':'; | |
901 | else | |
902 | c = '?'; | |
903 | } | |
904 | else | |
905 | /* We already incremented `optind' once; | |
906 | increment it again when taking next ARGV-elt as argument. */ | |
907 | optarg = argv[optind++]; | |
908 | nextchar = NULL; | |
909 | } | |
910 | } | |
911 | return c; | |
912 | } | |
913 | } | |
914 | #ifndef HAVE_GETOPT | |
915 | #define HAVE_GETOPT | |
916 | int | |
917 | getopt (argc, argv, optstring) | |
918 | int argc; | |
919 | char *const *argv; | |
920 | const char *optstring; | |
921 | { | |
922 | return _getopt_internal (argc, argv, optstring, | |
923 | (const struct option *) 0, | |
924 | (int *) 0, | |
925 | 0); | |
926 | } | |
927 | #endif /* HAVE_GETOPT */ | |
928 | #endif /* Not ELIDE_CODE. */ | |
929 | \f | |
930 | #ifdef TEST | |
931 | ||
932 | /* Compile with -DTEST to make an executable for use in testing | |
933 | the above definition of `getopt'. */ | |
934 | ||
935 | int | |
936 | main (argc, argv) | |
937 | int argc; | |
938 | char **argv; | |
939 | { | |
940 | int c; | |
941 | int digit_optind = 0; | |
942 | int optind = 1; | |
943 | char *optarg = NULL; | |
944 | ||
945 | while (1) | |
946 | { | |
947 | int this_option_optind = optind ? optind : 1; | |
948 | ||
949 | c = getopt (argc, argv, "abc:d:0123456789"); | |
950 | if (c == -1) | |
951 | break; | |
952 | ||
953 | switch (c) | |
954 | { | |
955 | case '0': | |
956 | case '1': | |
957 | case '2': | |
958 | case '3': | |
959 | case '4': | |
960 | case '5': | |
961 | case '6': | |
962 | case '7': | |
963 | case '8': | |
964 | case '9': | |
965 | if (digit_optind != 0 && digit_optind != this_option_optind) | |
966 | printf ("digits occur in two different argv-elements.\n"); | |
967 | digit_optind = this_option_optind; | |
968 | printf ("option %c\n", c); | |
969 | break; | |
970 | ||
971 | case 'a': | |
972 | printf ("option a\n"); | |
973 | break; | |
974 | ||
975 | case 'b': | |
976 | printf ("option b\n"); | |
977 | break; | |
978 | ||
979 | case 'c': | |
980 | printf ("option c with value `%s'\n", optarg); | |
981 | break; | |
982 | ||
983 | case '?': | |
984 | break; | |
985 | ||
986 | default: | |
987 | printf ("?? getopt returned character code 0%o ??\n", c); | |
988 | } | |
989 | } | |
990 | ||
991 | if (optind < argc) | |
992 | { | |
993 | printf ("non-option ARGV-elements: "); | |
994 | while (optind < argc) | |
995 | printf ("%s ", argv[optind++]); | |
996 | printf ("\n"); | |
997 | } | |
998 | ||
999 | exit (0); | |
1000 | } | |
1001 | ||
1002 | #endif /* TEST */ | |
1003 | #endif /* IGNORE_GETOPT */ |