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3013fe88 NW |
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 | ||
e32dd11d NW |
6 | Copyright (C) 1987, 88, 89, 90, 91, 92, 1993 |
7 | Free Software Foundation, Inc. | |
3013fe88 NW |
8 | |
9 | This program is free software; you can redistribute it and/or modify it | |
10 | under the terms of the GNU General Public License as published by the | |
11 | Free Software Foundation; either version 2, or (at your option) any | |
12 | later version. | |
e32dd11d | 13 | |
3013fe88 NW |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
e32dd11d | 18 | |
3013fe88 NW |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
22 | \f | |
e32dd11d NW |
23 | #ifdef HAVE_CONFIG_H |
24 | #include "config.h" | |
25 | #endif | |
26 | ||
27 | #ifndef __STDC__ | |
28 | # ifndef const | |
29 | # define const | |
30 | # endif | |
3013fe88 | 31 | #endif |
3013fe88 | 32 | |
caed0dfe NW |
33 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */ |
34 | #ifndef _NO_PROTO | |
e32dd11d | 35 | #define _NO_PROTO |
caed0dfe NW |
36 | #endif |
37 | ||
3013fe88 | 38 | #include <stdio.h> |
e32dd11d NW |
39 | #include "tailor.h" |
40 | ||
41 | /* Comment out all this code if we are using the GNU C Library, and are not | |
42 | actually compiling the library itself. This code is part of the GNU C | |
43 | Library, but also included in many other GNU distributions. Compiling | |
44 | and linking in this code is a waste when using the GNU C library | |
45 | (especially if it is a shared library). Rather than having every GNU | |
46 | program understand `configure --with-gnu-libc' and omit the object files, | |
47 | it is simpler to just do this in the source for each such file. */ | |
48 | ||
49 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__) | |
3013fe88 | 50 | |
3013fe88 NW |
51 | |
52 | /* This needs to come after some library #include | |
53 | to get __GNU_LIBRARY__ defined. */ | |
54 | #ifdef __GNU_LIBRARY__ | |
3013fe88 NW |
55 | /* Don't include stdlib.h for non-GNU C libraries because some of them |
56 | contain conflicting prototypes for getopt. */ | |
57 | #include <stdlib.h> | |
3013fe88 NW |
58 | #endif /* GNU C library. */ |
59 | ||
3013fe88 NW |
60 | /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a |
61 | long-named option. Because this is not POSIX.2 compliant, it is | |
62 | being phased out. */ | |
e32dd11d | 63 | /* #define GETOPT_COMPAT */ |
3013fe88 NW |
64 | |
65 | /* This version of `getopt' appears to the caller like standard Unix `getopt' | |
66 | but it behaves differently for the user, since it allows the user | |
67 | to intersperse the options with the other arguments. | |
68 | ||
69 | As `getopt' works, it permutes the elements of ARGV so that, | |
70 | when it is done, all the options precede everything else. Thus | |
71 | all application programs are extended to handle flexible argument order. | |
72 | ||
73 | Setting the environment variable POSIXLY_CORRECT disables permutation. | |
74 | Then the behavior is completely standard. | |
75 | ||
76 | GNU application programs can use a third alternative mode in which | |
77 | they can distinguish the relative order of options and other arguments. */ | |
78 | ||
79 | #include "getopt.h" | |
80 | ||
81 | /* For communication from `getopt' to the caller. | |
82 | When `getopt' finds an option that takes an argument, | |
83 | the argument value is returned here. | |
84 | Also, when `ordering' is RETURN_IN_ORDER, | |
85 | each non-option ARGV-element is returned here. */ | |
86 | ||
87 | char *optarg = 0; | |
88 | ||
89 | /* Index in ARGV of the next element to be scanned. | |
90 | This is used for communication to and from the caller | |
91 | and for communication between successive calls to `getopt'. | |
92 | ||
93 | On entry to `getopt', zero means this is the first call; initialize. | |
94 | ||
95 | When `getopt' returns EOF, this is the index of the first of the | |
96 | non-option elements that the caller should itself scan. | |
97 | ||
98 | Otherwise, `optind' communicates from one call to the next | |
99 | how much of ARGV has been scanned so far. */ | |
100 | ||
e32dd11d | 101 | /* XXX 1003.2 says this must be 1 before any call. */ |
3013fe88 NW |
102 | int optind = 0; |
103 | ||
104 | /* The next char to be scanned in the option-element | |
105 | in which the last option character we returned was found. | |
106 | This allows us to pick up the scan where we left off. | |
107 | ||
108 | If this is zero, or a null string, it means resume the scan | |
109 | by advancing to the next ARGV-element. */ | |
110 | ||
111 | static char *nextchar; | |
112 | ||
113 | /* Callers store zero here to inhibit the error message | |
114 | for unrecognized options. */ | |
115 | ||
116 | int opterr = 1; | |
117 | ||
e32dd11d NW |
118 | /* Set to an option character which was unrecognized. |
119 | This must be initialized on some systems to avoid linking in the | |
120 | system's own getopt implementation. */ | |
121 | ||
122 | #define BAD_OPTION '\0' | |
123 | int optopt = BAD_OPTION; | |
124 | ||
3013fe88 NW |
125 | /* Describe how to deal with options that follow non-option ARGV-elements. |
126 | ||
127 | If the caller did not specify anything, | |
128 | the default is REQUIRE_ORDER if the environment variable | |
129 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | |
130 | ||
131 | REQUIRE_ORDER means don't recognize them as options; | |
132 | stop option processing when the first non-option is seen. | |
133 | This is what Unix does. | |
134 | This mode of operation is selected by either setting the environment | |
135 | variable POSIXLY_CORRECT, or using `+' as the first character | |
136 | of the list of option characters. | |
137 | ||
138 | PERMUTE is the default. We permute the contents of ARGV as we scan, | |
139 | so that eventually all the non-options are at the end. This allows options | |
140 | to be given in any order, even with programs that were not written to | |
141 | expect this. | |
142 | ||
143 | RETURN_IN_ORDER is an option available to programs that were written | |
144 | to expect options and other ARGV-elements in any order and that care about | |
145 | the ordering of the two. We describe each non-option ARGV-element | |
146 | as if it were the argument of an option with character code 1. | |
147 | Using `-' as the first character of the list of option characters | |
148 | selects this mode of operation. | |
149 | ||
150 | The special argument `--' forces an end of option-scanning regardless | |
151 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | |
152 | `--' can cause `getopt' to return EOF with `optind' != ARGC. */ | |
153 | ||
154 | static enum | |
155 | { | |
156 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER | |
157 | } ordering; | |
158 | \f | |
159 | #ifdef __GNU_LIBRARY__ | |
e32dd11d NW |
160 | /* We want to avoid inclusion of string.h with non-GNU libraries |
161 | because there are many ways it can cause trouble. | |
162 | On some systems, it contains special magic macros that don't work | |
163 | in GCC. */ | |
3013fe88 NW |
164 | #include <string.h> |
165 | #define my_index strchr | |
e32dd11d | 166 | #define my_strlen strlen |
3013fe88 NW |
167 | #else |
168 | ||
169 | /* Avoid depending on library functions or files | |
170 | whose names are inconsistent. */ | |
171 | ||
e32dd11d NW |
172 | #if __STDC__ || defined(PROTO) |
173 | extern char *getenv(const char *name); | |
174 | extern int strcmp (const char *s1, const char *s2); | |
175 | extern int strncmp(const char *s1, const char *s2, int n); | |
176 | ||
177 | static int my_strlen(const char *s); | |
178 | static char *my_index (const char *str, int chr); | |
179 | #else | |
180 | extern char *getenv (); | |
181 | #endif | |
182 | ||
183 | static int | |
184 | my_strlen (str) | |
185 | const char *str; | |
186 | { | |
187 | int n = 0; | |
188 | while (*str++) | |
189 | n++; | |
190 | return n; | |
191 | } | |
3013fe88 NW |
192 | |
193 | static char * | |
e32dd11d NW |
194 | my_index (str, chr) |
195 | const char *str; | |
3013fe88 NW |
196 | int chr; |
197 | { | |
e32dd11d | 198 | while (*str) |
3013fe88 | 199 | { |
e32dd11d NW |
200 | if (*str == chr) |
201 | return (char *) str; | |
202 | str++; | |
3013fe88 NW |
203 | } |
204 | return 0; | |
205 | } | |
206 | ||
3013fe88 NW |
207 | #endif /* GNU C library. */ |
208 | \f | |
209 | /* Handle permutation of arguments. */ | |
210 | ||
211 | /* Describe the part of ARGV that contains non-options that have | |
212 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | |
213 | `last_nonopt' is the index after the last of them. */ | |
214 | ||
215 | static int first_nonopt; | |
216 | static int last_nonopt; | |
217 | ||
218 | /* Exchange two adjacent subsequences of ARGV. | |
219 | One subsequence is elements [first_nonopt,last_nonopt) | |
220 | which contains all the non-options that have been skipped so far. | |
221 | The other is elements [last_nonopt,optind), which contains all | |
222 | the options processed since those non-options were skipped. | |
223 | ||
224 | `first_nonopt' and `last_nonopt' are relocated so that they describe | |
e32dd11d NW |
225 | the new indices of the non-options in ARGV after they are moved. |
226 | ||
227 | To perform the swap, we first reverse the order of all elements. So | |
228 | all options now come before all non options, but they are in the | |
229 | wrong order. So we put back the options and non options in original | |
230 | order by reversing them again. For example: | |
231 | original input: a b c -x -y | |
232 | reverse all: -y -x c b a | |
233 | reverse options: -x -y c b a | |
234 | reverse non options: -x -y a b c | |
235 | */ | |
236 | ||
237 | #if __STDC__ || defined(PROTO) | |
238 | static void exchange (char **argv); | |
239 | #endif | |
3013fe88 NW |
240 | |
241 | static void | |
242 | exchange (argv) | |
243 | char **argv; | |
244 | { | |
e32dd11d | 245 | char *temp, **first, **last; |
3013fe88 | 246 | |
e32dd11d NW |
247 | /* Reverse all the elements [first_nonopt, optind) */ |
248 | first = &argv[first_nonopt]; | |
249 | last = &argv[optind-1]; | |
250 | while (first < last) { | |
251 | temp = *first; *first = *last; *last = temp; first++; last--; | |
252 | } | |
253 | /* Put back the options in order */ | |
254 | first = &argv[first_nonopt]; | |
3013fe88 | 255 | first_nonopt += (optind - last_nonopt); |
e32dd11d NW |
256 | last = &argv[first_nonopt - 1]; |
257 | while (first < last) { | |
258 | temp = *first; *first = *last; *last = temp; first++; last--; | |
259 | } | |
260 | ||
261 | /* Put back the non options in order */ | |
262 | first = &argv[first_nonopt]; | |
3013fe88 | 263 | last_nonopt = optind; |
e32dd11d NW |
264 | last = &argv[last_nonopt-1]; |
265 | while (first < last) { | |
266 | temp = *first; *first = *last; *last = temp; first++; last--; | |
267 | } | |
3013fe88 NW |
268 | } |
269 | \f | |
270 | /* Scan elements of ARGV (whose length is ARGC) for option characters | |
271 | given in OPTSTRING. | |
272 | ||
273 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
274 | then it is an option element. The characters of this element | |
275 | (aside from the initial '-') are option characters. If `getopt' | |
276 | is called repeatedly, it returns successively each of the option characters | |
277 | from each of the option elements. | |
278 | ||
279 | If `getopt' finds another option character, it returns that character, | |
280 | updating `optind' and `nextchar' so that the next call to `getopt' can | |
281 | resume the scan with the following option character or ARGV-element. | |
282 | ||
283 | If there are no more option characters, `getopt' returns `EOF'. | |
284 | Then `optind' is the index in ARGV of the first ARGV-element | |
285 | that is not an option. (The ARGV-elements have been permuted | |
286 | so that those that are not options now come last.) | |
287 | ||
288 | OPTSTRING is a string containing the legitimate option characters. | |
289 | If an option character is seen that is not listed in OPTSTRING, | |
e32dd11d NW |
290 | return BAD_OPTION after printing an error message. If you set `opterr' to |
291 | zero, the error message is suppressed but we still return BAD_OPTION. | |
3013fe88 NW |
292 | |
293 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
294 | so the following text in the same ARGV-element, or the text of the following | |
295 | ARGV-element, is returned in `optarg'. Two colons mean an option that | |
296 | wants an optional arg; if there is text in the current ARGV-element, | |
297 | it is returned in `optarg', otherwise `optarg' is set to zero. | |
298 | ||
299 | If OPTSTRING starts with `-' or `+', it requests different methods of | |
300 | handling the non-option ARGV-elements. | |
301 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
302 | ||
303 | Long-named options begin with `--' instead of `-'. | |
304 | Their names may be abbreviated as long as the abbreviation is unique | |
305 | or is an exact match for some defined option. If they have an | |
306 | argument, it follows the option name in the same ARGV-element, separated | |
307 | from the option name by a `=', or else the in next ARGV-element. | |
308 | When `getopt' finds a long-named option, it returns 0 if that option's | |
309 | `flag' field is nonzero, the value of the option's `val' field | |
310 | if the `flag' field is zero. | |
311 | ||
312 | The elements of ARGV aren't really const, because we permute them. | |
313 | But we pretend they're const in the prototype to be compatible | |
314 | with other systems. | |
315 | ||
316 | LONGOPTS is a vector of `struct option' terminated by an | |
317 | element containing a name which is zero. | |
318 | ||
319 | LONGIND returns the index in LONGOPT of the long-named option found. | |
320 | It is only valid when a long-named option has been found by the most | |
321 | recent call. | |
322 | ||
323 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
324 | long-named options. */ | |
325 | ||
326 | int | |
327 | _getopt_internal (argc, argv, optstring, longopts, longind, long_only) | |
328 | int argc; | |
329 | char *const *argv; | |
330 | const char *optstring; | |
331 | const struct option *longopts; | |
332 | int *longind; | |
333 | int long_only; | |
334 | { | |
335 | int option_index; | |
336 | ||
337 | optarg = 0; | |
338 | ||
339 | /* Initialize the internal data when the first call is made. | |
340 | Start processing options with ARGV-element 1 (since ARGV-element 0 | |
341 | is the program name); the sequence of previously skipped | |
342 | non-option ARGV-elements is empty. */ | |
343 | ||
344 | if (optind == 0) | |
345 | { | |
346 | first_nonopt = last_nonopt = optind = 1; | |
347 | ||
348 | nextchar = NULL; | |
349 | ||
350 | /* Determine how to handle the ordering of options and nonoptions. */ | |
351 | ||
352 | if (optstring[0] == '-') | |
353 | { | |
354 | ordering = RETURN_IN_ORDER; | |
355 | ++optstring; | |
356 | } | |
357 | else if (optstring[0] == '+') | |
358 | { | |
359 | ordering = REQUIRE_ORDER; | |
360 | ++optstring; | |
361 | } | |
362 | else if (getenv ("POSIXLY_CORRECT") != NULL) | |
363 | ordering = REQUIRE_ORDER; | |
364 | else | |
365 | ordering = PERMUTE; | |
366 | } | |
367 | ||
368 | if (nextchar == NULL || *nextchar == '\0') | |
369 | { | |
370 | if (ordering == PERMUTE) | |
371 | { | |
372 | /* If we have just processed some options following some non-options, | |
373 | exchange them so that the options come first. */ | |
374 | ||
375 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
376 | exchange ((char **) argv); | |
377 | else if (last_nonopt != optind) | |
378 | first_nonopt = optind; | |
379 | ||
380 | /* Now skip any additional non-options | |
381 | and extend the range of non-options previously skipped. */ | |
382 | ||
383 | while (optind < argc | |
384 | && (argv[optind][0] != '-' || argv[optind][1] == '\0') | |
385 | #ifdef GETOPT_COMPAT | |
386 | && (longopts == NULL | |
387 | || argv[optind][0] != '+' || argv[optind][1] == '\0') | |
388 | #endif /* GETOPT_COMPAT */ | |
389 | ) | |
390 | optind++; | |
391 | last_nonopt = optind; | |
392 | } | |
393 | ||
394 | /* Special ARGV-element `--' means premature end of options. | |
395 | Skip it like a null option, | |
396 | then exchange with previous non-options as if it were an option, | |
397 | then skip everything else like a non-option. */ | |
398 | ||
399 | if (optind != argc && !strcmp (argv[optind], "--")) | |
400 | { | |
401 | optind++; | |
402 | ||
403 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
404 | exchange ((char **) argv); | |
405 | else if (first_nonopt == last_nonopt) | |
406 | first_nonopt = optind; | |
407 | last_nonopt = argc; | |
408 | ||
409 | optind = argc; | |
410 | } | |
411 | ||
412 | /* If we have done all the ARGV-elements, stop the scan | |
413 | and back over any non-options that we skipped and permuted. */ | |
414 | ||
415 | if (optind == argc) | |
416 | { | |
417 | /* Set the next-arg-index to point at the non-options | |
418 | that we previously skipped, so the caller will digest them. */ | |
419 | if (first_nonopt != last_nonopt) | |
420 | optind = first_nonopt; | |
421 | return EOF; | |
422 | } | |
423 | ||
424 | /* If we have come to a non-option and did not permute it, | |
425 | either stop the scan or describe it to the caller and pass it by. */ | |
426 | ||
427 | if ((argv[optind][0] != '-' || argv[optind][1] == '\0') | |
428 | #ifdef GETOPT_COMPAT | |
429 | && (longopts == NULL | |
430 | || argv[optind][0] != '+' || argv[optind][1] == '\0') | |
431 | #endif /* GETOPT_COMPAT */ | |
432 | ) | |
433 | { | |
434 | if (ordering == REQUIRE_ORDER) | |
435 | return EOF; | |
436 | optarg = argv[optind++]; | |
437 | return 1; | |
438 | } | |
439 | ||
440 | /* We have found another option-ARGV-element. | |
441 | Start decoding its characters. */ | |
442 | ||
443 | nextchar = (argv[optind] + 1 | |
444 | + (longopts != NULL && argv[optind][1] == '-')); | |
445 | } | |
446 | ||
447 | if (longopts != NULL | |
448 | && ((argv[optind][0] == '-' | |
449 | && (argv[optind][1] == '-' || long_only)) | |
450 | #ifdef GETOPT_COMPAT | |
451 | || argv[optind][0] == '+' | |
452 | #endif /* GETOPT_COMPAT */ | |
453 | )) | |
454 | { | |
455 | const struct option *p; | |
456 | char *s = nextchar; | |
457 | int exact = 0; | |
458 | int ambig = 0; | |
459 | const struct option *pfound = NULL; | |
460 | int indfound = 0; | |
461 | ||
462 | while (*s && *s != '=') | |
463 | s++; | |
464 | ||
465 | /* Test all options for either exact match or abbreviated matches. */ | |
466 | for (p = longopts, option_index = 0; p->name; | |
467 | p++, option_index++) | |
468 | if (!strncmp (p->name, nextchar, s - nextchar)) | |
469 | { | |
e32dd11d | 470 | if (s - nextchar == my_strlen (p->name)) |
3013fe88 NW |
471 | { |
472 | /* Exact match found. */ | |
473 | pfound = p; | |
474 | indfound = option_index; | |
475 | exact = 1; | |
476 | break; | |
477 | } | |
478 | else if (pfound == NULL) | |
479 | { | |
480 | /* First nonexact match found. */ | |
481 | pfound = p; | |
482 | indfound = option_index; | |
483 | } | |
484 | else | |
485 | /* Second nonexact match found. */ | |
486 | ambig = 1; | |
487 | } | |
488 | ||
489 | if (ambig && !exact) | |
490 | { | |
491 | if (opterr) | |
492 | fprintf (stderr, "%s: option `%s' is ambiguous\n", | |
493 | argv[0], argv[optind]); | |
e32dd11d | 494 | nextchar += my_strlen (nextchar); |
3013fe88 | 495 | optind++; |
e32dd11d | 496 | return BAD_OPTION; |
3013fe88 NW |
497 | } |
498 | ||
499 | if (pfound != NULL) | |
500 | { | |
501 | option_index = indfound; | |
502 | optind++; | |
503 | if (*s) | |
504 | { | |
505 | /* Don't test has_arg with >, because some C compilers don't | |
506 | allow it to be used on enums. */ | |
507 | if (pfound->has_arg) | |
508 | optarg = s + 1; | |
509 | else | |
510 | { | |
511 | if (opterr) | |
512 | { | |
513 | if (argv[optind - 1][1] == '-') | |
514 | /* --option */ | |
515 | fprintf (stderr, | |
516 | "%s: option `--%s' doesn't allow an argument\n", | |
517 | argv[0], pfound->name); | |
518 | else | |
519 | /* +option or -option */ | |
520 | fprintf (stderr, | |
521 | "%s: option `%c%s' doesn't allow an argument\n", | |
522 | argv[0], argv[optind - 1][0], pfound->name); | |
523 | } | |
e32dd11d NW |
524 | nextchar += my_strlen (nextchar); |
525 | return BAD_OPTION; | |
3013fe88 NW |
526 | } |
527 | } | |
528 | else if (pfound->has_arg == 1) | |
529 | { | |
530 | if (optind < argc) | |
531 | optarg = argv[optind++]; | |
532 | else | |
533 | { | |
534 | if (opterr) | |
535 | fprintf (stderr, "%s: option `%s' requires an argument\n", | |
536 | argv[0], argv[optind - 1]); | |
e32dd11d NW |
537 | nextchar += my_strlen (nextchar); |
538 | return optstring[0] == ':' ? ':' : BAD_OPTION; | |
3013fe88 NW |
539 | } |
540 | } | |
e32dd11d | 541 | nextchar += my_strlen (nextchar); |
3013fe88 NW |
542 | if (longind != NULL) |
543 | *longind = option_index; | |
544 | if (pfound->flag) | |
545 | { | |
546 | *(pfound->flag) = pfound->val; | |
547 | return 0; | |
548 | } | |
549 | return pfound->val; | |
550 | } | |
551 | /* Can't find it as a long option. If this is not getopt_long_only, | |
552 | or the option starts with '--' or is not a valid short | |
553 | option, then it's an error. | |
554 | Otherwise interpret it as a short option. */ | |
555 | if (!long_only || argv[optind][1] == '-' | |
556 | #ifdef GETOPT_COMPAT | |
557 | || argv[optind][0] == '+' | |
558 | #endif /* GETOPT_COMPAT */ | |
e32dd11d | 559 | || my_index (optstring, *nextchar) == NULL) |
3013fe88 NW |
560 | { |
561 | if (opterr) | |
562 | { | |
563 | if (argv[optind][1] == '-') | |
564 | /* --option */ | |
565 | fprintf (stderr, "%s: unrecognized option `--%s'\n", | |
566 | argv[0], nextchar); | |
567 | else | |
568 | /* +option or -option */ | |
569 | fprintf (stderr, "%s: unrecognized option `%c%s'\n", | |
570 | argv[0], argv[optind][0], nextchar); | |
571 | } | |
572 | nextchar = (char *) ""; | |
573 | optind++; | |
e32dd11d | 574 | return BAD_OPTION; |
3013fe88 NW |
575 | } |
576 | } | |
577 | ||
578 | /* Look at and handle the next option-character. */ | |
579 | ||
580 | { | |
581 | char c = *nextchar++; | |
e32dd11d | 582 | char *temp = my_index (optstring, c); |
3013fe88 NW |
583 | |
584 | /* Increment `optind' when we start to process its last character. */ | |
585 | if (*nextchar == '\0') | |
586 | ++optind; | |
587 | ||
588 | if (temp == NULL || c == ':') | |
589 | { | |
590 | if (opterr) | |
591 | { | |
e32dd11d | 592 | #if 0 |
3013fe88 NW |
593 | if (c < 040 || c >= 0177) |
594 | fprintf (stderr, "%s: unrecognized option, character code 0%o\n", | |
595 | argv[0], c); | |
596 | else | |
597 | fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c); | |
e32dd11d NW |
598 | #else |
599 | /* 1003.2 specifies the format of this message. */ | |
600 | fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c); | |
601 | #endif | |
3013fe88 | 602 | } |
e32dd11d NW |
603 | optopt = c; |
604 | return BAD_OPTION; | |
3013fe88 NW |
605 | } |
606 | if (temp[1] == ':') | |
607 | { | |
608 | if (temp[2] == ':') | |
609 | { | |
610 | /* This is an option that accepts an argument optionally. */ | |
611 | if (*nextchar != '\0') | |
612 | { | |
613 | optarg = nextchar; | |
614 | optind++; | |
615 | } | |
616 | else | |
617 | optarg = 0; | |
618 | nextchar = NULL; | |
619 | } | |
620 | else | |
621 | { | |
622 | /* This is an option that requires an argument. */ | |
623 | if (*nextchar != '\0') | |
624 | { | |
625 | optarg = nextchar; | |
626 | /* If we end this ARGV-element by taking the rest as an arg, | |
627 | we must advance to the next element now. */ | |
628 | optind++; | |
629 | } | |
630 | else if (optind == argc) | |
631 | { | |
632 | if (opterr) | |
e32dd11d NW |
633 | { |
634 | #if 0 | |
635 | fprintf (stderr, "%s: option `-%c' requires an argument\n", | |
636 | argv[0], c); | |
637 | #else | |
638 | /* 1003.2 specifies the format of this message. */ | |
639 | fprintf (stderr, "%s: option requires an argument -- %c\n", | |
640 | argv[0], c); | |
641 | #endif | |
642 | } | |
643 | optopt = c; | |
644 | if (optstring[0] == ':') | |
645 | c = ':'; | |
646 | else | |
647 | c = BAD_OPTION; | |
3013fe88 NW |
648 | } |
649 | else | |
650 | /* We already incremented `optind' once; | |
651 | increment it again when taking next ARGV-elt as argument. */ | |
652 | optarg = argv[optind++]; | |
653 | nextchar = NULL; | |
654 | } | |
655 | } | |
656 | return c; | |
657 | } | |
658 | } | |
659 | ||
660 | int | |
661 | getopt (argc, argv, optstring) | |
662 | int argc; | |
663 | char *const *argv; | |
664 | const char *optstring; | |
665 | { | |
666 | return _getopt_internal (argc, argv, optstring, | |
667 | (const struct option *) 0, | |
668 | (int *) 0, | |
669 | 0); | |
670 | } | |
671 | ||
672 | int | |
673 | getopt_long (argc, argv, options, long_options, opt_index) | |
674 | int argc; | |
675 | char *const *argv; | |
676 | const char *options; | |
677 | const struct option *long_options; | |
678 | int *opt_index; | |
679 | { | |
680 | return _getopt_internal (argc, argv, options, long_options, opt_index, 0); | |
681 | } | |
682 | ||
e32dd11d | 683 | #endif /* _LIBC or not __GNU_LIBRARY__. */ |
3013fe88 NW |
684 | \f |
685 | #ifdef TEST | |
686 | ||
687 | /* Compile with -DTEST to make an executable for use in testing | |
688 | the above definition of `getopt'. */ | |
689 | ||
690 | int | |
691 | main (argc, argv) | |
692 | int argc; | |
693 | char **argv; | |
694 | { | |
695 | int c; | |
696 | int digit_optind = 0; | |
697 | ||
698 | while (1) | |
699 | { | |
700 | int this_option_optind = optind ? optind : 1; | |
701 | ||
702 | c = getopt (argc, argv, "abc:d:0123456789"); | |
703 | if (c == EOF) | |
704 | break; | |
705 | ||
706 | switch (c) | |
707 | { | |
708 | case '0': | |
709 | case '1': | |
710 | case '2': | |
711 | case '3': | |
712 | case '4': | |
713 | case '5': | |
714 | case '6': | |
715 | case '7': | |
716 | case '8': | |
717 | case '9': | |
718 | if (digit_optind != 0 && digit_optind != this_option_optind) | |
719 | printf ("digits occur in two different argv-elements.\n"); | |
720 | digit_optind = this_option_optind; | |
721 | printf ("option %c\n", c); | |
722 | break; | |
723 | ||
724 | case 'a': | |
725 | printf ("option a\n"); | |
726 | break; | |
727 | ||
728 | case 'b': | |
729 | printf ("option b\n"); | |
730 | break; | |
731 | ||
732 | case 'c': | |
733 | printf ("option c with value `%s'\n", optarg); | |
734 | break; | |
735 | ||
e32dd11d | 736 | case BAD_OPTION: |
3013fe88 NW |
737 | break; |
738 | ||
739 | default: | |
740 | printf ("?? getopt returned character code 0%o ??\n", c); | |
741 | } | |
742 | } | |
743 | ||
744 | if (optind < argc) | |
745 | { | |
746 | printf ("non-option ARGV-elements: "); | |
747 | while (optind < argc) | |
748 | printf ("%s ", argv[optind++]); | |
749 | printf ("\n"); | |
750 | } | |
751 | ||
752 | exit (0); | |
753 | } | |
754 | ||
755 | #endif /* TEST */ |