]>
Commit | Line | Data |
---|---|---|
28f540f4 RM |
1 | /* Getopt for GNU. |
2 | NOTE: getopt is now part of the C library, so if you don't know what | |
3db52d94 | 3 | "Keep this file name-space clean" means, talk to drepper@gnu.org |
28f540f4 RM |
4 | before changing it! |
5 | ||
c4563d2d | 6 | Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 |
28f540f4 RM |
7 | Free Software Foundation, Inc. |
8 | ||
7e3be507 UD |
9 | The GNU C Library is free software; you can redistribute it and/or |
10 | modify it under the terms of the GNU Library General Public License as | |
11 | published by the Free Software Foundation; either version 2 of the | |
12 | License, or (at your option) any later version. | |
13 | ||
14 | The GNU C Library is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | Library General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU Library General Public | |
20 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
21 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
28f540f4 RM |
23 | \f |
24 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. | |
25 | Ditto for AIX 3.2 and <stdlib.h>. */ | |
26 | #ifndef _NO_PROTO | |
8619129f | 27 | # define _NO_PROTO |
28f540f4 RM |
28 | #endif |
29 | ||
30 | #ifdef HAVE_CONFIG_H | |
8619129f | 31 | # include <config.h> |
28f540f4 RM |
32 | #endif |
33 | ||
3db52d94 | 34 | #if !defined __STDC__ || !__STDC__ |
28f540f4 RM |
35 | /* This is a separate conditional since some stdc systems |
36 | reject `defined (const)'. */ | |
8619129f UD |
37 | # ifndef const |
38 | # define const | |
39 | # endif | |
28f540f4 RM |
40 | #endif |
41 | ||
42 | #include <stdio.h> | |
43 | ||
44 | /* Comment out all this code if we are using the GNU C Library, and are not | |
45 | actually compiling the library itself. This code is part of the GNU C | |
46 | Library, but also included in many other GNU distributions. Compiling | |
47 | and linking in this code is a waste when using the GNU C library | |
48 | (especially if it is a shared library). Rather than having every GNU | |
49 | program understand `configure --with-gnu-libc' and omit the object files, | |
50 | it is simpler to just do this in the source for each such file. */ | |
51 | ||
8d57beea | 52 | #define GETOPT_INTERFACE_VERSION 2 |
3db52d94 | 53 | #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 |
8619129f UD |
54 | # include <gnu-versions.h> |
55 | # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION | |
56 | # define ELIDE_CODE | |
57 | # endif | |
d38cd08c UD |
58 | #endif |
59 | ||
60 | #ifndef ELIDE_CODE | |
28f540f4 RM |
61 | |
62 | ||
63 | /* This needs to come after some library #include | |
64 | to get __GNU_LIBRARY__ defined. */ | |
65 | #ifdef __GNU_LIBRARY__ | |
66 | /* Don't include stdlib.h for non-GNU C libraries because some of them | |
67 | contain conflicting prototypes for getopt. */ | |
8619129f UD |
68 | # include <stdlib.h> |
69 | # include <unistd.h> | |
28f540f4 RM |
70 | #endif /* GNU C library. */ |
71 | ||
12fb2990 | 72 | #ifdef VMS |
8619129f UD |
73 | # include <unixlib.h> |
74 | # if HAVE_STRING_H - 0 | |
75 | # include <string.h> | |
76 | # endif | |
12fb2990 RM |
77 | #endif |
78 | ||
879bf2e6 | 79 | #ifndef _ |
0ad46177 | 80 | /* This is for other GNU distributions with internationalized messages. |
879bf2e6 | 81 | When compiling libc, the _ macro is predefined. */ |
8619129f UD |
82 | # ifdef HAVE_LIBINTL_H |
83 | # include <libintl.h> | |
84 | # define _(msgid) gettext (msgid) | |
85 | # else | |
86 | # define _(msgid) (msgid) | |
87 | # endif | |
0ad46177 RM |
88 | #endif |
89 | ||
28f540f4 RM |
90 | /* This version of `getopt' appears to the caller like standard Unix `getopt' |
91 | but it behaves differently for the user, since it allows the user | |
92 | to intersperse the options with the other arguments. | |
93 | ||
94 | As `getopt' works, it permutes the elements of ARGV so that, | |
95 | when it is done, all the options precede everything else. Thus | |
96 | all application programs are extended to handle flexible argument order. | |
97 | ||
98 | Setting the environment variable POSIXLY_CORRECT disables permutation. | |
99 | Then the behavior is completely standard. | |
100 | ||
101 | GNU application programs can use a third alternative mode in which | |
102 | they can distinguish the relative order of options and other arguments. */ | |
103 | ||
104 | #include "getopt.h" | |
105 | ||
106 | /* For communication from `getopt' to the caller. | |
107 | When `getopt' finds an option that takes an argument, | |
108 | the argument value is returned here. | |
109 | Also, when `ordering' is RETURN_IN_ORDER, | |
110 | each non-option ARGV-element is returned here. */ | |
111 | ||
c4563d2d | 112 | char *optarg; |
28f540f4 RM |
113 | |
114 | /* Index in ARGV of the next element to be scanned. | |
115 | This is used for communication to and from the caller | |
116 | and for communication between successive calls to `getopt'. | |
117 | ||
118 | On entry to `getopt', zero means this is the first call; initialize. | |
119 | ||
1ef32c3d | 120 | When `getopt' returns -1, this is the index of the first of the |
28f540f4 RM |
121 | non-option elements that the caller should itself scan. |
122 | ||
123 | Otherwise, `optind' communicates from one call to the next | |
124 | how much of ARGV has been scanned so far. */ | |
125 | ||
d38cd08c UD |
126 | /* 1003.2 says this must be 1 before any call. */ |
127 | int optind = 1; | |
128 | ||
129 | /* Formerly, initialization of getopt depended on optind==0, which | |
130 | causes problems with re-calling getopt as programs generally don't | |
131 | know that. */ | |
132 | ||
c4563d2d | 133 | int __getopt_initialized; |
28f540f4 RM |
134 | |
135 | /* The next char to be scanned in the option-element | |
136 | in which the last option character we returned was found. | |
137 | This allows us to pick up the scan where we left off. | |
138 | ||
139 | If this is zero, or a null string, it means resume the scan | |
140 | by advancing to the next ARGV-element. */ | |
141 | ||
142 | static char *nextchar; | |
143 | ||
144 | /* Callers store zero here to inhibit the error message | |
145 | for unrecognized options. */ | |
146 | ||
147 | int opterr = 1; | |
148 | ||
149 | /* Set to an option character which was unrecognized. | |
150 | This must be initialized on some systems to avoid linking in the | |
151 | system's own getopt implementation. */ | |
152 | ||
153 | int optopt = '?'; | |
154 | ||
155 | /* Describe how to deal with options that follow non-option ARGV-elements. | |
156 | ||
157 | If the caller did not specify anything, | |
158 | the default is REQUIRE_ORDER if the environment variable | |
159 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | |
160 | ||
161 | REQUIRE_ORDER means don't recognize them as options; | |
162 | stop option processing when the first non-option is seen. | |
163 | This is what Unix does. | |
164 | This mode of operation is selected by either setting the environment | |
165 | variable POSIXLY_CORRECT, or using `+' as the first character | |
166 | of the list of option characters. | |
167 | ||
168 | PERMUTE is the default. We permute the contents of ARGV as we scan, | |
169 | so that eventually all the non-options are at the end. This allows options | |
170 | to be given in any order, even with programs that were not written to | |
171 | expect this. | |
172 | ||
173 | RETURN_IN_ORDER is an option available to programs that were written | |
174 | to expect options and other ARGV-elements in any order and that care about | |
175 | the ordering of the two. We describe each non-option ARGV-element | |
176 | as if it were the argument of an option with character code 1. | |
177 | Using `-' as the first character of the list of option characters | |
178 | selects this mode of operation. | |
179 | ||
180 | The special argument `--' forces an end of option-scanning regardless | |
181 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | |
1ef32c3d | 182 | `--' can cause `getopt' to return -1 with `optind' != ARGC. */ |
28f540f4 RM |
183 | |
184 | static enum | |
185 | { | |
186 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER | |
187 | } ordering; | |
188 | ||
189 | /* Value of POSIXLY_CORRECT environment variable. */ | |
190 | static char *posixly_correct; | |
191 | \f | |
192 | #ifdef __GNU_LIBRARY__ | |
193 | /* We want to avoid inclusion of string.h with non-GNU libraries | |
194 | because there are many ways it can cause trouble. | |
195 | On some systems, it contains special magic macros that don't work | |
196 | in GCC. */ | |
8619129f UD |
197 | # include <string.h> |
198 | # define my_index strchr | |
28f540f4 RM |
199 | #else |
200 | ||
5b155773 UD |
201 | # if HAVE_STRING_H |
202 | # include <string.h> | |
203 | # else | |
204 | # include <strings.h> | |
205 | # endif | |
206 | ||
28f540f4 RM |
207 | /* Avoid depending on library functions or files |
208 | whose names are inconsistent. */ | |
209 | ||
8619129f UD |
210 | #ifndef getenv |
211 | extern char *getenv (); | |
212 | #endif | |
28f540f4 RM |
213 | |
214 | static char * | |
215 | my_index (str, chr) | |
216 | const char *str; | |
217 | int chr; | |
218 | { | |
219 | while (*str) | |
220 | { | |
221 | if (*str == chr) | |
222 | return (char *) str; | |
223 | str++; | |
224 | } | |
225 | return 0; | |
226 | } | |
227 | ||
228 | /* If using GCC, we can safely declare strlen this way. | |
229 | If not using GCC, it is ok not to declare it. */ | |
230 | #ifdef __GNUC__ | |
231 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | |
232 | That was relevant to code that was here before. */ | |
8619129f | 233 | # if (!defined __STDC__ || !__STDC__) && !defined strlen |
28f540f4 RM |
234 | /* gcc with -traditional declares the built-in strlen to return int, |
235 | and has done so at least since version 2.4.5. -- rms. */ | |
236 | extern int strlen (const char *); | |
8619129f | 237 | # endif /* not __STDC__ */ |
28f540f4 RM |
238 | #endif /* __GNUC__ */ |
239 | ||
240 | #endif /* not __GNU_LIBRARY__ */ | |
241 | \f | |
242 | /* Handle permutation of arguments. */ | |
243 | ||
244 | /* Describe the part of ARGV that contains non-options that have | |
245 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | |
246 | `last_nonopt' is the index after the last of them. */ | |
247 | ||
248 | static int first_nonopt; | |
249 | static int last_nonopt; | |
250 | ||
df4ef2ab | 251 | #ifdef _LIBC |
b07c5668 RM |
252 | /* Bash 2.0 gives us an environment variable containing flags |
253 | indicating ARGV elements that should not be considered arguments. */ | |
254 | ||
3e5f5557 UD |
255 | /* Defined in getopt_init.c */ |
256 | extern char *__getopt_nonoption_flags; | |
257 | ||
831372e7 | 258 | static int nonoption_flags_max_len; |
b07c5668 RM |
259 | static int nonoption_flags_len; |
260 | ||
df4ef2ab UD |
261 | static int original_argc; |
262 | static char *const *original_argv; | |
263 | ||
264 | /* Make sure the environment variable bash 2.0 puts in the environment | |
265 | is valid for the getopt call we must make sure that the ARGV passed | |
266 | to getopt is that one passed to the process. */ | |
df4ef2ab | 267 | static void |
7cc27f44 UD |
268 | __attribute__ ((unused)) |
269 | store_args_and_env (int argc, char *const *argv) | |
df4ef2ab UD |
270 | { |
271 | /* XXX This is no good solution. We should rather copy the args so | |
272 | that we can compare them later. But we must not use malloc(3). */ | |
273 | original_argc = argc; | |
274 | original_argv = argv; | |
275 | } | |
9a0a462c | 276 | # ifdef text_set_element |
7cc27f44 | 277 | text_set_element (__libc_subinit, store_args_and_env); |
9a0a462c | 278 | # endif /* text_set_element */ |
831372e7 UD |
279 | |
280 | # define SWAP_FLAGS(ch1, ch2) \ | |
281 | if (nonoption_flags_len > 0) \ | |
282 | { \ | |
7cc27f44 UD |
283 | char __tmp = __getopt_nonoption_flags[ch1]; \ |
284 | __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ | |
285 | __getopt_nonoption_flags[ch2] = __tmp; \ | |
831372e7 | 286 | } |
7cc27f44 | 287 | #else /* !_LIBC */ |
831372e7 | 288 | # define SWAP_FLAGS(ch1, ch2) |
7cc27f44 | 289 | #endif /* _LIBC */ |
df4ef2ab | 290 | |
28f540f4 RM |
291 | /* Exchange two adjacent subsequences of ARGV. |
292 | One subsequence is elements [first_nonopt,last_nonopt) | |
293 | which contains all the non-options that have been skipped so far. | |
294 | The other is elements [last_nonopt,optind), which contains all | |
295 | the options processed since those non-options were skipped. | |
296 | ||
297 | `first_nonopt' and `last_nonopt' are relocated so that they describe | |
298 | the new indices of the non-options in ARGV after they are moved. */ | |
299 | ||
3db52d94 | 300 | #if defined __STDC__ && __STDC__ |
eb63bdd0 RM |
301 | static void exchange (char **); |
302 | #endif | |
303 | ||
28f540f4 RM |
304 | static void |
305 | exchange (argv) | |
306 | char **argv; | |
307 | { | |
308 | int bottom = first_nonopt; | |
309 | int middle = last_nonopt; | |
310 | int top = optind; | |
311 | char *tem; | |
312 | ||
313 | /* Exchange the shorter segment with the far end of the longer segment. | |
314 | That puts the shorter segment into the right place. | |
315 | It leaves the longer segment in the right place overall, | |
316 | but it consists of two parts that need to be swapped next. */ | |
317 | ||
831372e7 | 318 | #ifdef _LIBC |
7cc27f44 UD |
319 | /* First make sure the handling of the `__getopt_nonoption_flags' |
320 | string can work normally. Our top argument must be in the range | |
321 | of the string. */ | |
322 | if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) | |
831372e7 UD |
323 | { |
324 | /* We must extend the array. The user plays games with us and | |
325 | presents new arguments. */ | |
326 | char *new_str = malloc (top + 1); | |
327 | if (new_str == NULL) | |
328 | nonoption_flags_len = nonoption_flags_max_len = 0; | |
329 | else | |
330 | { | |
86187531 UD |
331 | memset (__mempcpy (new_str, __getopt_nonoption_flags, |
332 | nonoption_flags_max_len), | |
333 | '\0', top + 1 - nonoption_flags_max_len); | |
831372e7 | 334 | nonoption_flags_max_len = top + 1; |
7cc27f44 | 335 | __getopt_nonoption_flags = new_str; |
831372e7 UD |
336 | } |
337 | } | |
338 | #endif | |
339 | ||
28f540f4 RM |
340 | while (top > middle && middle > bottom) |
341 | { | |
342 | if (top - middle > middle - bottom) | |
343 | { | |
344 | /* Bottom segment is the short one. */ | |
345 | int len = middle - bottom; | |
346 | register int i; | |
347 | ||
348 | /* Swap it with the top part of the top segment. */ | |
349 | for (i = 0; i < len; i++) | |
350 | { | |
351 | tem = argv[bottom + i]; | |
352 | argv[bottom + i] = argv[top - (middle - bottom) + i]; | |
353 | argv[top - (middle - bottom) + i] = tem; | |
831372e7 | 354 | SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); |
28f540f4 RM |
355 | } |
356 | /* Exclude the moved bottom segment from further swapping. */ | |
357 | top -= len; | |
358 | } | |
359 | else | |
360 | { | |
361 | /* Top segment is the short one. */ | |
362 | int len = top - middle; | |
363 | register int i; | |
364 | ||
365 | /* Swap it with the bottom part of the bottom segment. */ | |
366 | for (i = 0; i < len; i++) | |
367 | { | |
368 | tem = argv[bottom + i]; | |
369 | argv[bottom + i] = argv[middle + i]; | |
370 | argv[middle + i] = tem; | |
831372e7 | 371 | SWAP_FLAGS (bottom + i, middle + i); |
28f540f4 RM |
372 | } |
373 | /* Exclude the moved top segment from further swapping. */ | |
374 | bottom += len; | |
375 | } | |
376 | } | |
377 | ||
378 | /* Update records for the slots the non-options now occupy. */ | |
379 | ||
380 | first_nonopt += (optind - last_nonopt); | |
381 | last_nonopt = optind; | |
382 | } | |
383 | ||
384 | /* Initialize the internal data when the first call is made. */ | |
385 | ||
3db52d94 | 386 | #if defined __STDC__ && __STDC__ |
df4ef2ab | 387 | static const char *_getopt_initialize (int, char *const *, const char *); |
eb63bdd0 | 388 | #endif |
28f540f4 | 389 | static const char * |
df4ef2ab UD |
390 | _getopt_initialize (argc, argv, optstring) |
391 | int argc; | |
392 | char *const *argv; | |
28f540f4 RM |
393 | const char *optstring; |
394 | { | |
395 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 | |
396 | is the program name); the sequence of previously skipped | |
397 | non-option ARGV-elements is empty. */ | |
398 | ||
c131718c | 399 | first_nonopt = last_nonopt = optind; |
28f540f4 RM |
400 | |
401 | nextchar = NULL; | |
402 | ||
403 | posixly_correct = getenv ("POSIXLY_CORRECT"); | |
404 | ||
405 | /* Determine how to handle the ordering of options and nonoptions. */ | |
406 | ||
407 | if (optstring[0] == '-') | |
408 | { | |
409 | ordering = RETURN_IN_ORDER; | |
410 | ++optstring; | |
411 | } | |
412 | else if (optstring[0] == '+') | |
413 | { | |
414 | ordering = REQUIRE_ORDER; | |
415 | ++optstring; | |
416 | } | |
417 | else if (posixly_correct != NULL) | |
418 | ordering = REQUIRE_ORDER; | |
419 | else | |
420 | ordering = PERMUTE; | |
421 | ||
df4ef2ab UD |
422 | #ifdef _LIBC |
423 | if (posixly_correct == NULL | |
424 | && argc == original_argc && argv == original_argv) | |
b07c5668 | 425 | { |
831372e7 UD |
426 | if (nonoption_flags_max_len == 0) |
427 | { | |
7cc27f44 UD |
428 | if (__getopt_nonoption_flags == NULL |
429 | || __getopt_nonoption_flags[0] == '\0') | |
831372e7 UD |
430 | nonoption_flags_max_len = -1; |
431 | else | |
432 | { | |
7cc27f44 | 433 | const char *orig_str = __getopt_nonoption_flags; |
831372e7 UD |
434 | int len = nonoption_flags_max_len = strlen (orig_str); |
435 | if (nonoption_flags_max_len < argc) | |
436 | nonoption_flags_max_len = argc; | |
7cc27f44 UD |
437 | __getopt_nonoption_flags = |
438 | (char *) malloc (nonoption_flags_max_len); | |
439 | if (__getopt_nonoption_flags == NULL) | |
831372e7 UD |
440 | nonoption_flags_max_len = -1; |
441 | else | |
86187531 UD |
442 | memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), |
443 | '\0', nonoption_flags_max_len - len); | |
831372e7 UD |
444 | } |
445 | } | |
831372e7 | 446 | nonoption_flags_len = nonoption_flags_max_len; |
b07c5668 | 447 | } |
df4ef2ab UD |
448 | else |
449 | nonoption_flags_len = 0; | |
450 | #endif | |
b07c5668 | 451 | |
28f540f4 RM |
452 | return optstring; |
453 | } | |
454 | \f | |
455 | /* Scan elements of ARGV (whose length is ARGC) for option characters | |
456 | given in OPTSTRING. | |
457 | ||
458 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
459 | then it is an option element. The characters of this element | |
460 | (aside from the initial '-') are option characters. If `getopt' | |
461 | is called repeatedly, it returns successively each of the option characters | |
462 | from each of the option elements. | |
463 | ||
464 | If `getopt' finds another option character, it returns that character, | |
465 | updating `optind' and `nextchar' so that the next call to `getopt' can | |
466 | resume the scan with the following option character or ARGV-element. | |
467 | ||
1ef32c3d | 468 | If there are no more option characters, `getopt' returns -1. |
28f540f4 RM |
469 | Then `optind' is the index in ARGV of the first ARGV-element |
470 | that is not an option. (The ARGV-elements have been permuted | |
471 | so that those that are not options now come last.) | |
472 | ||
473 | OPTSTRING is a string containing the legitimate option characters. | |
474 | If an option character is seen that is not listed in OPTSTRING, | |
475 | return '?' after printing an error message. If you set `opterr' to | |
476 | zero, the error message is suppressed but we still return '?'. | |
477 | ||
478 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
479 | so the following text in the same ARGV-element, or the text of the following | |
480 | ARGV-element, is returned in `optarg'. Two colons mean an option that | |
481 | wants an optional arg; if there is text in the current ARGV-element, | |
482 | it is returned in `optarg', otherwise `optarg' is set to zero. | |
483 | ||
484 | If OPTSTRING starts with `-' or `+', it requests different methods of | |
485 | handling the non-option ARGV-elements. | |
486 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
487 | ||
488 | Long-named options begin with `--' instead of `-'. | |
489 | Their names may be abbreviated as long as the abbreviation is unique | |
490 | or is an exact match for some defined option. If they have an | |
491 | argument, it follows the option name in the same ARGV-element, separated | |
492 | from the option name by a `=', or else the in next ARGV-element. | |
493 | When `getopt' finds a long-named option, it returns 0 if that option's | |
494 | `flag' field is nonzero, the value of the option's `val' field | |
495 | if the `flag' field is zero. | |
496 | ||
497 | The elements of ARGV aren't really const, because we permute them. | |
498 | But we pretend they're const in the prototype to be compatible | |
499 | with other systems. | |
500 | ||
501 | LONGOPTS is a vector of `struct option' terminated by an | |
502 | element containing a name which is zero. | |
503 | ||
504 | LONGIND returns the index in LONGOPT of the long-named option found. | |
505 | It is only valid when a long-named option has been found by the most | |
506 | recent call. | |
507 | ||
508 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
509 | long-named options. */ | |
510 | ||
511 | int | |
512 | _getopt_internal (argc, argv, optstring, longopts, longind, long_only) | |
513 | int argc; | |
514 | char *const *argv; | |
515 | const char *optstring; | |
516 | const struct option *longopts; | |
517 | int *longind; | |
518 | int long_only; | |
519 | { | |
520 | optarg = NULL; | |
521 | ||
c131718c | 522 | if (optind == 0 || !__getopt_initialized) |
1474b80f | 523 | { |
c131718c UD |
524 | if (optind == 0) |
525 | optind = 1; /* Don't scan ARGV[0], the program name. */ | |
df4ef2ab | 526 | optstring = _getopt_initialize (argc, argv, optstring); |
d38cd08c | 527 | __getopt_initialized = 1; |
1474b80f | 528 | } |
28f540f4 | 529 | |
b07c5668 RM |
530 | /* Test whether ARGV[optind] points to a non-option argument. |
531 | Either it does not have option syntax, or there is an environment flag | |
df4ef2ab UD |
532 | from the shell indicating it is not an option. The later information |
533 | is only used when the used in the GNU libc. */ | |
534 | #ifdef _LIBC | |
8619129f UD |
535 | # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ |
536 | || (optind < nonoption_flags_len \ | |
537 | && __getopt_nonoption_flags[optind] == '1')) | |
df4ef2ab | 538 | #else |
8619129f | 539 | # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') |
df4ef2ab | 540 | #endif |
b07c5668 | 541 | |
28f540f4 RM |
542 | if (nextchar == NULL || *nextchar == '\0') |
543 | { | |
544 | /* Advance to the next ARGV-element. */ | |
545 | ||
e335fa38 MB |
546 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been |
547 | moved back by the user (who may also have changed the arguments). */ | |
548 | if (last_nonopt > optind) | |
549 | last_nonopt = optind; | |
550 | if (first_nonopt > optind) | |
551 | first_nonopt = optind; | |
552 | ||
28f540f4 RM |
553 | if (ordering == PERMUTE) |
554 | { | |
555 | /* If we have just processed some options following some non-options, | |
556 | exchange them so that the options come first. */ | |
557 | ||
558 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
559 | exchange ((char **) argv); | |
560 | else if (last_nonopt != optind) | |
561 | first_nonopt = optind; | |
562 | ||
563 | /* Skip any additional non-options | |
564 | and extend the range of non-options previously skipped. */ | |
565 | ||
b07c5668 | 566 | while (optind < argc && NONOPTION_P) |
28f540f4 RM |
567 | optind++; |
568 | last_nonopt = optind; | |
569 | } | |
570 | ||
571 | /* The special ARGV-element `--' means premature end of options. | |
572 | Skip it like a null option, | |
573 | then exchange with previous non-options as if it were an option, | |
574 | then skip everything else like a non-option. */ | |
575 | ||
576 | if (optind != argc && !strcmp (argv[optind], "--")) | |
577 | { | |
578 | optind++; | |
579 | ||
580 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
581 | exchange ((char **) argv); | |
582 | else if (first_nonopt == last_nonopt) | |
583 | first_nonopt = optind; | |
584 | last_nonopt = argc; | |
585 | ||
586 | optind = argc; | |
587 | } | |
588 | ||
589 | /* If we have done all the ARGV-elements, stop the scan | |
590 | and back over any non-options that we skipped and permuted. */ | |
591 | ||
592 | if (optind == argc) | |
593 | { | |
594 | /* Set the next-arg-index to point at the non-options | |
595 | that we previously skipped, so the caller will digest them. */ | |
596 | if (first_nonopt != last_nonopt) | |
597 | optind = first_nonopt; | |
1ef32c3d | 598 | return -1; |
28f540f4 RM |
599 | } |
600 | ||
601 | /* If we have come to a non-option and did not permute it, | |
602 | either stop the scan or describe it to the caller and pass it by. */ | |
603 | ||
b07c5668 | 604 | if (NONOPTION_P) |
28f540f4 RM |
605 | { |
606 | if (ordering == REQUIRE_ORDER) | |
1ef32c3d | 607 | return -1; |
28f540f4 RM |
608 | optarg = argv[optind++]; |
609 | return 1; | |
610 | } | |
611 | ||
612 | /* We have found another option-ARGV-element. | |
613 | Skip the initial punctuation. */ | |
614 | ||
615 | nextchar = (argv[optind] + 1 | |
616 | + (longopts != NULL && argv[optind][1] == '-')); | |
617 | } | |
618 | ||
619 | /* Decode the current option-ARGV-element. */ | |
620 | ||
621 | /* Check whether the ARGV-element is a long option. | |
622 | ||
623 | If long_only and the ARGV-element has the form "-f", where f is | |
624 | a valid short option, don't consider it an abbreviated form of | |
625 | a long option that starts with f. Otherwise there would be no | |
626 | way to give the -f short option. | |
627 | ||
628 | On the other hand, if there's a long option "fubar" and | |
629 | the ARGV-element is "-fu", do consider that an abbreviation of | |
630 | the long option, just like "--fu", and not "-f" with arg "u". | |
631 | ||
632 | This distinction seems to be the most useful approach. */ | |
633 | ||
634 | if (longopts != NULL | |
635 | && (argv[optind][1] == '-' | |
636 | || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) | |
637 | { | |
638 | char *nameend; | |
639 | const struct option *p; | |
640 | const struct option *pfound = NULL; | |
641 | int exact = 0; | |
642 | int ambig = 0; | |
cccda09f | 643 | int indfound = -1; |
28f540f4 RM |
644 | int option_index; |
645 | ||
646 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | |
647 | /* Do nothing. */ ; | |
648 | ||
649 | /* Test all long options for either exact match | |
650 | or abbreviated matches. */ | |
651 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
652 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
653 | { | |
cccda09f UD |
654 | if ((unsigned int) (nameend - nextchar) |
655 | == (unsigned int) strlen (p->name)) | |
28f540f4 RM |
656 | { |
657 | /* Exact match found. */ | |
658 | pfound = p; | |
659 | indfound = option_index; | |
660 | exact = 1; | |
661 | break; | |
662 | } | |
663 | else if (pfound == NULL) | |
664 | { | |
665 | /* First nonexact match found. */ | |
666 | pfound = p; | |
667 | indfound = option_index; | |
668 | } | |
669 | else | |
670 | /* Second or later nonexact match found. */ | |
671 | ambig = 1; | |
672 | } | |
673 | ||
674 | if (ambig && !exact) | |
675 | { | |
676 | if (opterr) | |
879bf2e6 | 677 | fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
28f540f4 RM |
678 | argv[0], argv[optind]); |
679 | nextchar += strlen (nextchar); | |
680 | optind++; | |
d1c57d0c | 681 | optopt = 0; |
28f540f4 RM |
682 | return '?'; |
683 | } | |
684 | ||
685 | if (pfound != NULL) | |
686 | { | |
687 | option_index = indfound; | |
688 | optind++; | |
689 | if (*nameend) | |
690 | { | |
691 | /* Don't test has_arg with >, because some C compilers don't | |
692 | allow it to be used on enums. */ | |
693 | if (pfound->has_arg) | |
694 | optarg = nameend + 1; | |
695 | else | |
696 | { | |
697 | if (opterr) | |
6e4c40ba UD |
698 | { |
699 | if (argv[optind - 1][1] == '-') | |
700 | /* --option */ | |
701 | fprintf (stderr, | |
702 | _("%s: option `--%s' doesn't allow an argument\n"), | |
703 | argv[0], pfound->name); | |
704 | else | |
705 | /* +option or -option */ | |
706 | fprintf (stderr, | |
707 | _("%s: option `%c%s' doesn't allow an argument\n"), | |
708 | argv[0], argv[optind - 1][0], pfound->name); | |
709 | } | |
0ad46177 | 710 | |
28f540f4 | 711 | nextchar += strlen (nextchar); |
d1c57d0c MB |
712 | |
713 | optopt = pfound->val; | |
28f540f4 RM |
714 | return '?'; |
715 | } | |
716 | } | |
717 | else if (pfound->has_arg == 1) | |
718 | { | |
719 | if (optind < argc) | |
720 | optarg = argv[optind++]; | |
721 | else | |
722 | { | |
723 | if (opterr) | |
0ad46177 | 724 | fprintf (stderr, |
879bf2e6 | 725 | _("%s: option `%s' requires an argument\n"), |
0ad46177 | 726 | argv[0], argv[optind - 1]); |
28f540f4 | 727 | nextchar += strlen (nextchar); |
d1c57d0c | 728 | optopt = pfound->val; |
28f540f4 RM |
729 | return optstring[0] == ':' ? ':' : '?'; |
730 | } | |
731 | } | |
732 | nextchar += strlen (nextchar); | |
733 | if (longind != NULL) | |
734 | *longind = option_index; | |
735 | if (pfound->flag) | |
736 | { | |
737 | *(pfound->flag) = pfound->val; | |
738 | return 0; | |
739 | } | |
740 | return pfound->val; | |
741 | } | |
742 | ||
743 | /* Can't find it as a long option. If this is not getopt_long_only, | |
744 | or the option starts with '--' or is not a valid short | |
745 | option, then it's an error. | |
746 | Otherwise interpret it as a short option. */ | |
747 | if (!long_only || argv[optind][1] == '-' | |
748 | || my_index (optstring, *nextchar) == NULL) | |
749 | { | |
750 | if (opterr) | |
751 | { | |
752 | if (argv[optind][1] == '-') | |
753 | /* --option */ | |
879bf2e6 | 754 | fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
28f540f4 RM |
755 | argv[0], nextchar); |
756 | else | |
757 | /* +option or -option */ | |
879bf2e6 | 758 | fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
28f540f4 RM |
759 | argv[0], argv[optind][0], nextchar); |
760 | } | |
761 | nextchar = (char *) ""; | |
762 | optind++; | |
d1c57d0c | 763 | optopt = 0; |
28f540f4 RM |
764 | return '?'; |
765 | } | |
766 | } | |
767 | ||
768 | /* Look at and handle the next short option-character. */ | |
769 | ||
770 | { | |
771 | char c = *nextchar++; | |
772 | char *temp = my_index (optstring, c); | |
773 | ||
774 | /* Increment `optind' when we start to process its last character. */ | |
775 | if (*nextchar == '\0') | |
776 | ++optind; | |
777 | ||
778 | if (temp == NULL || c == ':') | |
779 | { | |
780 | if (opterr) | |
781 | { | |
782 | if (posixly_correct) | |
783 | /* 1003.2 specifies the format of this message. */ | |
879bf2e6 | 784 | fprintf (stderr, _("%s: illegal option -- %c\n"), |
0ad46177 | 785 | argv[0], c); |
28f540f4 | 786 | else |
879bf2e6 | 787 | fprintf (stderr, _("%s: invalid option -- %c\n"), |
0ad46177 | 788 | argv[0], c); |
28f540f4 RM |
789 | } |
790 | optopt = c; | |
791 | return '?'; | |
792 | } | |
11336c16 UD |
793 | /* Convenience. Treat POSIX -W foo same as long option --foo */ |
794 | if (temp[0] == 'W' && temp[1] == ';') | |
795 | { | |
796 | char *nameend; | |
797 | const struct option *p; | |
798 | const struct option *pfound = NULL; | |
799 | int exact = 0; | |
800 | int ambig = 0; | |
d41c6f61 | 801 | int indfound = 0; |
11336c16 UD |
802 | int option_index; |
803 | ||
804 | /* This is an option that requires an argument. */ | |
805 | if (*nextchar != '\0') | |
806 | { | |
807 | optarg = nextchar; | |
808 | /* If we end this ARGV-element by taking the rest as an arg, | |
809 | we must advance to the next element now. */ | |
810 | optind++; | |
811 | } | |
812 | else if (optind == argc) | |
813 | { | |
814 | if (opterr) | |
815 | { | |
816 | /* 1003.2 specifies the format of this message. */ | |
5290baf0 | 817 | fprintf (stderr, _("%s: option requires an argument -- %c\n"), |
11336c16 UD |
818 | argv[0], c); |
819 | } | |
820 | optopt = c; | |
821 | if (optstring[0] == ':') | |
822 | c = ':'; | |
823 | else | |
824 | c = '?'; | |
7e3be507 | 825 | return c; |
11336c16 UD |
826 | } |
827 | else | |
828 | /* We already incremented `optind' once; | |
829 | increment it again when taking next ARGV-elt as argument. */ | |
830 | optarg = argv[optind++]; | |
831 | ||
832 | /* optarg is now the argument, see if it's in the | |
833 | table of longopts. */ | |
834 | ||
835 | for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) | |
836 | /* Do nothing. */ ; | |
837 | ||
838 | /* Test all long options for either exact match | |
839 | or abbreviated matches. */ | |
840 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
841 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
842 | { | |
d41c6f61 | 843 | if ((unsigned int) (nameend - nextchar) == strlen (p->name)) |
11336c16 UD |
844 | { |
845 | /* Exact match found. */ | |
846 | pfound = p; | |
847 | indfound = option_index; | |
848 | exact = 1; | |
849 | break; | |
850 | } | |
851 | else if (pfound == NULL) | |
852 | { | |
853 | /* First nonexact match found. */ | |
854 | pfound = p; | |
855 | indfound = option_index; | |
856 | } | |
857 | else | |
858 | /* Second or later nonexact match found. */ | |
859 | ambig = 1; | |
860 | } | |
861 | if (ambig && !exact) | |
862 | { | |
863 | if (opterr) | |
5290baf0 | 864 | fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), |
11336c16 UD |
865 | argv[0], argv[optind]); |
866 | nextchar += strlen (nextchar); | |
867 | optind++; | |
868 | return '?'; | |
869 | } | |
870 | if (pfound != NULL) | |
871 | { | |
872 | option_index = indfound; | |
873 | if (*nameend) | |
874 | { | |
875 | /* Don't test has_arg with >, because some C compilers don't | |
876 | allow it to be used on enums. */ | |
877 | if (pfound->has_arg) | |
878 | optarg = nameend + 1; | |
879 | else | |
880 | { | |
881 | if (opterr) | |
5290baf0 UD |
882 | fprintf (stderr, _("\ |
883 | %s: option `-W %s' doesn't allow an argument\n"), | |
884 | argv[0], pfound->name); | |
11336c16 UD |
885 | |
886 | nextchar += strlen (nextchar); | |
887 | return '?'; | |
888 | } | |
889 | } | |
890 | else if (pfound->has_arg == 1) | |
891 | { | |
892 | if (optind < argc) | |
893 | optarg = argv[optind++]; | |
894 | else | |
895 | { | |
896 | if (opterr) | |
897 | fprintf (stderr, | |
5290baf0 | 898 | _("%s: option `%s' requires an argument\n"), |
11336c16 UD |
899 | argv[0], argv[optind - 1]); |
900 | nextchar += strlen (nextchar); | |
901 | return optstring[0] == ':' ? ':' : '?'; | |
902 | } | |
903 | } | |
904 | nextchar += strlen (nextchar); | |
905 | if (longind != NULL) | |
906 | *longind = option_index; | |
907 | if (pfound->flag) | |
908 | { | |
909 | *(pfound->flag) = pfound->val; | |
910 | return 0; | |
911 | } | |
912 | return pfound->val; | |
913 | } | |
914 | nextchar = NULL; | |
915 | return 'W'; /* Let the application handle it. */ | |
916 | } | |
28f540f4 RM |
917 | if (temp[1] == ':') |
918 | { | |
919 | if (temp[2] == ':') | |
920 | { | |
921 | /* This is an option that accepts an argument optionally. */ | |
922 | if (*nextchar != '\0') | |
923 | { | |
924 | optarg = nextchar; | |
925 | optind++; | |
926 | } | |
927 | else | |
928 | optarg = NULL; | |
929 | nextchar = NULL; | |
930 | } | |
931 | else | |
932 | { | |
933 | /* This is an option that requires an argument. */ | |
934 | if (*nextchar != '\0') | |
935 | { | |
936 | optarg = nextchar; | |
937 | /* If we end this ARGV-element by taking the rest as an arg, | |
938 | we must advance to the next element now. */ | |
939 | optind++; | |
940 | } | |
941 | else if (optind == argc) | |
942 | { | |
943 | if (opterr) | |
944 | { | |
945 | /* 1003.2 specifies the format of this message. */ | |
0ad46177 | 946 | fprintf (stderr, |
879bf2e6 | 947 | _("%s: option requires an argument -- %c\n"), |
0ad46177 | 948 | argv[0], c); |
28f540f4 RM |
949 | } |
950 | optopt = c; | |
951 | if (optstring[0] == ':') | |
952 | c = ':'; | |
953 | else | |
954 | c = '?'; | |
955 | } | |
956 | else | |
957 | /* We already incremented `optind' once; | |
958 | increment it again when taking next ARGV-elt as argument. */ | |
959 | optarg = argv[optind++]; | |
960 | nextchar = NULL; | |
961 | } | |
962 | } | |
963 | return c; | |
964 | } | |
965 | } | |
966 | ||
967 | int | |
968 | getopt (argc, argv, optstring) | |
969 | int argc; | |
970 | char *const *argv; | |
971 | const char *optstring; | |
972 | { | |
973 | return _getopt_internal (argc, argv, optstring, | |
974 | (const struct option *) 0, | |
975 | (int *) 0, | |
976 | 0); | |
977 | } | |
978 | ||
d38cd08c | 979 | #endif /* Not ELIDE_CODE. */ |
28f540f4 RM |
980 | \f |
981 | #ifdef TEST | |
982 | ||
983 | /* Compile with -DTEST to make an executable for use in testing | |
984 | the above definition of `getopt'. */ | |
985 | ||
986 | int | |
987 | main (argc, argv) | |
988 | int argc; | |
989 | char **argv; | |
990 | { | |
991 | int c; | |
992 | int digit_optind = 0; | |
993 | ||
994 | while (1) | |
995 | { | |
996 | int this_option_optind = optind ? optind : 1; | |
997 | ||
998 | c = getopt (argc, argv, "abc:d:0123456789"); | |
1ef32c3d | 999 | if (c == -1) |
28f540f4 RM |
1000 | break; |
1001 | ||
1002 | switch (c) | |
1003 | { | |
1004 | case '0': | |
1005 | case '1': | |
1006 | case '2': | |
1007 | case '3': | |
1008 | case '4': | |
1009 | case '5': | |
1010 | case '6': | |
1011 | case '7': | |
1012 | case '8': | |
1013 | case '9': | |
1014 | if (digit_optind != 0 && digit_optind != this_option_optind) | |
1015 | printf ("digits occur in two different argv-elements.\n"); | |
1016 | digit_optind = this_option_optind; | |
1017 | printf ("option %c\n", c); | |
1018 | break; | |
1019 | ||
1020 | case 'a': | |
1021 | printf ("option a\n"); | |
1022 | break; | |
1023 | ||
1024 | case 'b': | |
1025 | printf ("option b\n"); | |
1026 | break; | |
1027 | ||
1028 | case 'c': | |
1029 | printf ("option c with value `%s'\n", optarg); | |
1030 | break; | |
1031 | ||
1032 | case '?': | |
1033 | break; | |
1034 | ||
1035 | default: | |
1036 | printf ("?? getopt returned character code 0%o ??\n", c); | |
1037 | } | |
1038 | } | |
1039 | ||
1040 | if (optind < argc) | |
1041 | { | |
1042 | printf ("non-option ARGV-elements: "); | |
1043 | while (optind < argc) | |
1044 | printf ("%s ", argv[optind++]); | |
1045 | printf ("\n"); | |
1046 | } | |
1047 | ||
1048 | exit (0); | |
1049 | } | |
1050 | ||
1051 | #endif /* TEST */ |