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718e3744 | 1 | /* Getopt for GNU. |
896014f4 DL |
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 drepper@gnu.org | |
4 | * before changing it! | |
5 | * | |
6 | * Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98 | |
7 | * Free Software Foundation, Inc. | |
8 | * | |
9 | * NOTE: The canonical source of this file is maintained with the GNU C Library. | |
10 | * Bugs can be reported to bug-glibc@gnu.org. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify it | |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2, or (at your option) any | |
15 | * later version. | |
16 | * | |
17 | * This program 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 | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License along | |
23 | * with this program; see the file COPYING; if not, write to the Free Software | |
24 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
25 | */ | |
6b0655a2 | 26 | |
718e3744 | 27 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. |
28 | Ditto for AIX 3.2 and <stdlib.h>. */ | |
29 | #ifndef _NO_PROTO | |
30 | # define _NO_PROTO | |
31 | #endif | |
32 | ||
024a7f06 | 33 | #include <zebra.h> |
34 | ||
718e3744 | 35 | #if !defined __STDC__ || !__STDC__ |
36 | /* This is a separate conditional since some stdc systems | |
37 | reject `defined (const)'. */ | |
d62a17ae | 38 | #ifndef const |
718e3744 | 39 | # define const |
d62a17ae | 40 | #endif |
718e3744 | 41 | #endif |
42 | ||
43 | #include <stdio.h> | |
44 | ||
45 | /* Comment out all this code if we are using the GNU C Library, and are not | |
46 | actually compiling the library itself. This code is part of the GNU C | |
47 | Library, but also included in many other GNU distributions. Compiling | |
48 | and linking in this code is a waste when using the GNU C library | |
49 | (especially if it is a shared library). Rather than having every GNU | |
50 | program understand `configure --with-gnu-libc' and omit the object files, | |
51 | it is simpler to just do this in the source for each such file. */ | |
52 | ||
53 | #define GETOPT_INTERFACE_VERSION 2 | |
54 | #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 | |
d62a17ae | 55 | #include <gnu-versions.h> |
56 | #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION | |
718e3744 | 57 | # define ELIDE_CODE |
d62a17ae | 58 | #endif |
718e3744 | 59 | #endif |
60 | ||
61 | #ifndef ELIDE_CODE | |
62 | ||
63 | ||
64 | /* This needs to come after some library #include | |
65 | to get __GNU_LIBRARY__ defined. */ | |
d62a17ae | 66 | #ifdef __GNU_LIBRARY__ |
718e3744 | 67 | /* Don't include stdlib.h for non-GNU C libraries because some of them |
68 | contain conflicting prototypes for getopt. */ | |
d62a17ae | 69 | #include <stdlib.h> |
70 | #include <unistd.h> | |
71 | #endif /* GNU C library. */ | |
718e3744 | 72 | |
73 | #ifdef VMS | |
d62a17ae | 74 | #include <unixlib.h> |
75 | #if HAVE_STRING_H - 0 | |
76 | #include <string.h> | |
77 | #endif | |
718e3744 | 78 | #endif |
79 | ||
80 | #ifndef _ | |
81 | /* This is for other GNU distributions with internationalized messages. | |
82 | When compiling libc, the _ macro is predefined. */ | |
d62a17ae | 83 | #ifdef HAVE_LIBINTL_H |
84 | #include <libintl.h> | |
718e3744 | 85 | # define _(msgid) gettext (msgid) |
d62a17ae | 86 | #else |
718e3744 | 87 | # define _(msgid) (msgid) |
d62a17ae | 88 | #endif |
718e3744 | 89 | #endif |
90 | ||
91 | /* This version of `getopt' appears to the caller like standard Unix `getopt' | |
92 | but it behaves differently for the user, since it allows the user | |
93 | to intersperse the options with the other arguments. | |
94 | ||
95 | As `getopt' works, it permutes the elements of ARGV so that, | |
96 | when it is done, all the options precede everything else. Thus | |
97 | all application programs are extended to handle flexible argument order. | |
98 | ||
99 | Setting the environment variable POSIXLY_CORRECT disables permutation. | |
100 | Then the behavior is completely standard. | |
101 | ||
102 | GNU application programs can use a third alternative mode in which | |
103 | they can distinguish the relative order of options and other arguments. */ | |
104 | ||
105 | #include "getopt.h" | |
106 | ||
107 | /* For communication from `getopt' to the caller. | |
108 | When `getopt' finds an option that takes an argument, | |
109 | the argument value is returned here. | |
110 | Also, when `ordering' is RETURN_IN_ORDER, | |
111 | each non-option ARGV-element is returned here. */ | |
112 | ||
113 | char *optarg = NULL; | |
114 | ||
115 | /* Index in ARGV of the next element to be scanned. | |
116 | This is used for communication to and from the caller | |
117 | and for communication between successive calls to `getopt'. | |
118 | ||
119 | On entry to `getopt', zero means this is the first call; initialize. | |
120 | ||
121 | When `getopt' returns -1, this is the index of the first of the | |
122 | non-option elements that the caller should itself scan. | |
123 | ||
124 | Otherwise, `optind' communicates from one call to the next | |
125 | how much of ARGV has been scanned so far. */ | |
126 | ||
127 | /* 1003.2 says this must be 1 before any call. */ | |
128 | int optind = 1; | |
129 | ||
130 | /* Formerly, initialization of getopt depended on optind==0, which | |
131 | causes problems with re-calling getopt as programs generally don't | |
132 | know that. */ | |
133 | ||
134 | int __getopt_initialized = 0; | |
135 | ||
136 | /* The next char to be scanned in the option-element | |
137 | in which the last option character we returned was found. | |
138 | This allows us to pick up the scan where we left off. | |
139 | ||
140 | If this is zero, or a null string, it means resume the scan | |
141 | by advancing to the next ARGV-element. */ | |
142 | ||
143 | static char *nextchar; | |
144 | ||
145 | /* Callers store zero here to inhibit the error message | |
146 | for unrecognized options. */ | |
147 | ||
148 | int opterr = 1; | |
149 | ||
150 | /* Set to an option character which was unrecognized. | |
151 | This must be initialized on some systems to avoid linking in the | |
152 | system's own getopt implementation. */ | |
153 | ||
154 | int optopt = '?'; | |
155 | ||
156 | /* Describe how to deal with options that follow non-option ARGV-elements. | |
157 | ||
158 | If the caller did not specify anything, | |
159 | the default is REQUIRE_ORDER if the environment variable | |
160 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | |
161 | ||
162 | REQUIRE_ORDER means don't recognize them as options; | |
163 | stop option processing when the first non-option is seen. | |
164 | This is what Unix does. | |
165 | This mode of operation is selected by either setting the environment | |
166 | variable POSIXLY_CORRECT, or using `+' as the first character | |
167 | of the list of option characters. | |
168 | ||
169 | PERMUTE is the default. We permute the contents of ARGV as we scan, | |
170 | so that eventually all the non-options are at the end. This allows options | |
171 | to be given in any order, even with programs that were not written to | |
172 | expect this. | |
173 | ||
174 | RETURN_IN_ORDER is an option available to programs that were written | |
175 | to expect options and other ARGV-elements in any order and that care about | |
176 | the ordering of the two. We describe each non-option ARGV-element | |
177 | as if it were the argument of an option with character code 1. | |
178 | Using `-' as the first character of the list of option characters | |
179 | selects this mode of operation. | |
180 | ||
181 | The special argument `--' forces an end of option-scanning regardless | |
182 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | |
183 | `--' can cause `getopt' to return -1 with `optind' != ARGC. */ | |
184 | ||
d62a17ae | 185 | static enum { REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER } ordering; |
718e3744 | 186 | |
187 | /* Value of POSIXLY_CORRECT environment variable. */ | |
188 | static char *posixly_correct; | |
6b0655a2 | 189 | |
d62a17ae | 190 | #ifdef __GNU_LIBRARY__ |
718e3744 | 191 | /* We want to avoid inclusion of string.h with non-GNU libraries |
192 | because there are many ways it can cause trouble. | |
193 | On some systems, it contains special magic macros that don't work | |
194 | in GCC. */ | |
d62a17ae | 195 | #include <string.h> |
718e3744 | 196 | # define my_index strchr |
197 | #else | |
198 | ||
d62a17ae | 199 | #if HAVE_STRING_H |
200 | #include <string.h> | |
201 | #else | |
202 | #include <strings.h> | |
203 | #endif | |
718e3744 | 204 | |
205 | /* Avoid depending on library functions or files | |
206 | whose names are inconsistent. */ | |
207 | ||
208 | #ifndef getenv | |
9fb83ab1 | 209 | extern char *getenv(const char *); |
718e3744 | 210 | #endif |
211 | ||
9fb83ab1 | 212 | static char *my_index(const char *str, int chr) |
718e3744 | 213 | { |
d62a17ae | 214 | while (*str) { |
215 | if (*str == chr) | |
216 | return (char *)str; | |
217 | str++; | |
218 | } | |
219 | return 0; | |
718e3744 | 220 | } |
221 | ||
222 | /* If using GCC, we can safely declare strlen this way. | |
223 | If not using GCC, it is ok not to declare it. */ | |
224 | #ifdef __GNUC__ | |
225 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | |
226 | That was relevant to code that was here before. */ | |
d62a17ae | 227 | #if (!defined __STDC__ || !__STDC__) && !defined strlen |
718e3744 | 228 | /* gcc with -traditional declares the built-in strlen to return int, |
229 | and has done so at least since version 2.4.5. -- rms. */ | |
d62a17ae | 230 | extern int strlen(const char *); |
231 | #endif /* not __STDC__ */ | |
718e3744 | 232 | #endif /* __GNUC__ */ |
233 | ||
234 | #endif /* not __GNU_LIBRARY__ */ | |
6b0655a2 | 235 | |
718e3744 | 236 | /* Handle permutation of arguments. */ |
237 | ||
238 | /* Describe the part of ARGV that contains non-options that have | |
239 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | |
240 | `last_nonopt' is the index after the last of them. */ | |
241 | ||
242 | static int first_nonopt; | |
243 | static int last_nonopt; | |
244 | ||
245 | #ifdef _LIBC | |
246 | /* Bash 2.0 gives us an environment variable containing flags | |
247 | indicating ARGV elements that should not be considered arguments. */ | |
248 | ||
249 | /* Defined in getopt_init.c */ | |
250 | extern char *__getopt_nonoption_flags; | |
251 | ||
252 | static int nonoption_flags_max_len; | |
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. */ | |
d62a17ae | 261 | static void __attribute__((unused)) |
262 | store_args_and_env(int argc, char *const *argv) | |
718e3744 | 263 | { |
d62a17ae | 264 | /* XXX This is no good solution. We should rather copy the args so |
265 | that we can compare them later. But we must not use malloc(3). */ | |
266 | original_argc = argc; | |
267 | original_argv = argv; | |
718e3744 | 268 | } |
d62a17ae | 269 | #ifdef text_set_element |
270 | text_set_element(__libc_subinit, store_args_and_env); | |
271 | #endif /* text_set_element */ | |
272 | ||
273 | #define SWAP_FLAGS(ch1, ch2) \ | |
274 | if (nonoption_flags_len > 0) { \ | |
275 | char __tmp = __getopt_nonoption_flags[ch1]; \ | |
276 | __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ | |
277 | __getopt_nonoption_flags[ch2] = __tmp; \ | |
278 | } | |
279 | #else /* !_LIBC */ | |
718e3744 | 280 | # define SWAP_FLAGS(ch1, ch2) |
d62a17ae | 281 | #endif /* _LIBC */ |
718e3744 | 282 | |
283 | /* Exchange two adjacent subsequences of ARGV. | |
284 | One subsequence is elements [first_nonopt,last_nonopt) | |
285 | which contains all the non-options that have been skipped so far. | |
286 | The other is elements [last_nonopt,optind), which contains all | |
287 | the options processed since those non-options were skipped. | |
288 | ||
289 | `first_nonopt' and `last_nonopt' are relocated so that they describe | |
290 | the new indices of the non-options in ARGV after they are moved. */ | |
291 | ||
292 | #if defined __STDC__ && __STDC__ | |
d62a17ae | 293 | static void exchange(char **); |
718e3744 | 294 | #endif |
295 | ||
d62a17ae | 296 | static void exchange(argv) char **argv; |
718e3744 | 297 | { |
d62a17ae | 298 | int bottom = first_nonopt; |
299 | int middle = last_nonopt; | |
300 | int top = optind; | |
301 | char *tem; | |
718e3744 | 302 | |
d62a17ae | 303 | /* Exchange the shorter segment with the far end of the longer segment. |
304 | That puts the shorter segment into the right place. | |
305 | It leaves the longer segment in the right place overall, | |
306 | but it consists of two parts that need to be swapped next. */ | |
718e3744 | 307 | |
308 | #ifdef _LIBC | |
d62a17ae | 309 | /* First make sure the handling of the `__getopt_nonoption_flags' |
310 | string can work normally. Our top argument must be in the range | |
311 | of the string. */ | |
312 | if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) { | |
313 | /* We must extend the array. The user plays games with us and | |
314 | presents new arguments. */ | |
315 | char *new_str = malloc(top + 1); | |
316 | if (new_str == NULL) | |
317 | nonoption_flags_len = nonoption_flags_max_len = 0; | |
318 | else { | |
319 | memset(__mempcpy(new_str, __getopt_nonoption_flags, | |
320 | nonoption_flags_max_len), | |
321 | '\0', top + 1 - nonoption_flags_max_len); | |
322 | nonoption_flags_max_len = top + 1; | |
323 | __getopt_nonoption_flags = new_str; | |
324 | } | |
718e3744 | 325 | } |
718e3744 | 326 | #endif |
327 | ||
d62a17ae | 328 | while (top > middle && middle > bottom) { |
329 | if (top - middle > middle - bottom) { | |
330 | /* Bottom segment is the short one. */ | |
331 | int len = middle - bottom; | |
332 | register int i; | |
333 | ||
334 | /* Swap it with the top part of the top segment. */ | |
335 | for (i = 0; i < len; i++) { | |
336 | tem = argv[bottom + i]; | |
337 | argv[bottom + i] = | |
338 | argv[top - (middle - bottom) + i]; | |
339 | argv[top - (middle - bottom) + i] = tem; | |
340 | SWAP_FLAGS(bottom + i, | |
341 | top - (middle - bottom) + i); | |
342 | } | |
343 | /* Exclude the moved bottom segment from further | |
344 | * swapping. */ | |
345 | top -= len; | |
346 | } else { | |
347 | /* Top segment is the short one. */ | |
348 | int len = top - middle; | |
349 | register int i; | |
350 | ||
351 | /* Swap it with the bottom part of the bottom segment. | |
352 | */ | |
353 | for (i = 0; i < len; i++) { | |
354 | tem = argv[bottom + i]; | |
355 | argv[bottom + i] = argv[middle + i]; | |
356 | argv[middle + i] = tem; | |
357 | SWAP_FLAGS(bottom + i, middle + i); | |
358 | } | |
359 | /* Exclude the moved top segment from further swapping. | |
360 | */ | |
361 | bottom += len; | |
362 | } | |
718e3744 | 363 | } |
718e3744 | 364 | |
d62a17ae | 365 | /* Update records for the slots the non-options now occupy. */ |
718e3744 | 366 | |
d62a17ae | 367 | first_nonopt += (optind - last_nonopt); |
368 | last_nonopt = optind; | |
718e3744 | 369 | } |
370 | ||
371 | /* Initialize the internal data when the first call is made. */ | |
372 | ||
373 | #if defined __STDC__ && __STDC__ | |
d62a17ae | 374 | static const char *_getopt_initialize(int, char *const *, const char *); |
718e3744 | 375 | #endif |
d62a17ae | 376 | static const char *_getopt_initialize(argc, argv, optstring) int argc; |
377 | char *const *argv; | |
378 | const char *optstring; | |
718e3744 | 379 | { |
d62a17ae | 380 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 |
381 | is the program name); the sequence of previously skipped | |
382 | non-option ARGV-elements is empty. */ | |
718e3744 | 383 | |
d62a17ae | 384 | first_nonopt = last_nonopt = optind; |
718e3744 | 385 | |
d62a17ae | 386 | nextchar = NULL; |
718e3744 | 387 | |
d62a17ae | 388 | posixly_correct = getenv("POSIXLY_CORRECT"); |
718e3744 | 389 | |
d62a17ae | 390 | /* Determine how to handle the ordering of options and nonoptions. */ |
718e3744 | 391 | |
d62a17ae | 392 | if (optstring[0] == '-') { |
393 | ordering = RETURN_IN_ORDER; | |
394 | ++optstring; | |
395 | } else if (optstring[0] == '+') { | |
396 | ordering = REQUIRE_ORDER; | |
397 | ++optstring; | |
398 | } else if (posixly_correct != NULL) | |
399 | ordering = REQUIRE_ORDER; | |
400 | else | |
401 | ordering = PERMUTE; | |
718e3744 | 402 | |
403 | #ifdef _LIBC | |
d62a17ae | 404 | if (posixly_correct == NULL && argc == original_argc |
405 | && argv == original_argv) { | |
406 | if (nonoption_flags_max_len == 0) { | |
407 | if (__getopt_nonoption_flags == NULL | |
408 | || __getopt_nonoption_flags[0] == '\0') | |
409 | nonoption_flags_max_len = -1; | |
410 | else { | |
411 | const char *orig_str = __getopt_nonoption_flags; | |
412 | int len = nonoption_flags_max_len = | |
413 | strlen(orig_str); | |
414 | if (nonoption_flags_max_len < argc) | |
415 | nonoption_flags_max_len = argc; | |
416 | __getopt_nonoption_flags = | |
417 | (char *)malloc(nonoption_flags_max_len); | |
418 | if (__getopt_nonoption_flags == NULL) | |
419 | nonoption_flags_max_len = -1; | |
420 | else | |
421 | memset(__mempcpy( | |
422 | __getopt_nonoption_flags, | |
423 | orig_str, len), | |
424 | '\0', | |
425 | nonoption_flags_max_len - len); | |
426 | } | |
427 | } | |
428 | nonoption_flags_len = nonoption_flags_max_len; | |
429 | } else | |
430 | nonoption_flags_len = 0; | |
718e3744 | 431 | #endif |
432 | ||
d62a17ae | 433 | return optstring; |
718e3744 | 434 | } |
6b0655a2 | 435 | |
718e3744 | 436 | /* Scan elements of ARGV (whose length is ARGC) for option characters |
437 | given in OPTSTRING. | |
438 | ||
439 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
440 | then it is an option element. The characters of this element | |
441 | (aside from the initial '-') are option characters. If `getopt' | |
442 | is called repeatedly, it returns successively each of the option characters | |
443 | from each of the option elements. | |
444 | ||
445 | If `getopt' finds another option character, it returns that character, | |
446 | updating `optind' and `nextchar' so that the next call to `getopt' can | |
447 | resume the scan with the following option character or ARGV-element. | |
448 | ||
449 | If there are no more option characters, `getopt' returns -1. | |
450 | Then `optind' is the index in ARGV of the first ARGV-element | |
451 | that is not an option. (The ARGV-elements have been permuted | |
452 | so that those that are not options now come last.) | |
453 | ||
454 | OPTSTRING is a string containing the legitimate option characters. | |
455 | If an option character is seen that is not listed in OPTSTRING, | |
456 | return '?' after printing an error message. If you set `opterr' to | |
457 | zero, the error message is suppressed but we still return '?'. | |
458 | ||
459 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
460 | so the following text in the same ARGV-element, or the text of the following | |
461 | ARGV-element, is returned in `optarg'. Two colons mean an option that | |
462 | wants an optional arg; if there is text in the current ARGV-element, | |
463 | it is returned in `optarg', otherwise `optarg' is set to zero. | |
464 | ||
465 | If OPTSTRING starts with `-' or `+', it requests different methods of | |
466 | handling the non-option ARGV-elements. | |
467 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
468 | ||
469 | Long-named options begin with `--' instead of `-'. | |
470 | Their names may be abbreviated as long as the abbreviation is unique | |
471 | or is an exact match for some defined option. If they have an | |
472 | argument, it follows the option name in the same ARGV-element, separated | |
473 | from the option name by a `=', or else the in next ARGV-element. | |
474 | When `getopt' finds a long-named option, it returns 0 if that option's | |
475 | `flag' field is nonzero, the value of the option's `val' field | |
476 | if the `flag' field is zero. | |
477 | ||
478 | The elements of ARGV aren't really const, because we permute them. | |
479 | But we pretend they're const in the prototype to be compatible | |
480 | with other systems. | |
481 | ||
482 | LONGOPTS is a vector of `struct option' terminated by an | |
483 | element containing a name which is zero. | |
484 | ||
485 | LONGIND returns the index in LONGOPT of the long-named option found. | |
486 | It is only valid when a long-named option has been found by the most | |
487 | recent call. | |
488 | ||
489 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
490 | long-named options. */ | |
491 | ||
d62a17ae | 492 | int _getopt_internal(argc, argv, optstring, longopts, longind, |
493 | long_only) int argc; | |
494 | char *const *argv; | |
495 | const char *optstring; | |
496 | const struct option *longopts; | |
497 | int *longind; | |
498 | int long_only; | |
718e3744 | 499 | { |
d62a17ae | 500 | optarg = NULL; |
501 | ||
502 | if (optind == 0 || !__getopt_initialized) { | |
503 | if (optind == 0) | |
504 | optind = 1; /* Don't scan ARGV[0], the program name. */ | |
505 | optstring = _getopt_initialize(argc, argv, optstring); | |
506 | __getopt_initialized = 1; | |
507 | } | |
508 | ||
509 | /* Test whether ARGV[optind] points to a non-option argument. | |
510 | Either it does not have option syntax, or there is an environment flag | |
511 | from the shell indicating it is not an option. The later information | |
512 | is only used when the used in the GNU libc. */ | |
718e3744 | 513 | #ifdef _LIBC |
d62a17ae | 514 | #define NONOPTION_P \ |
515 | (argv[optind][0] != '-' || argv[optind][1] == '\0' \ | |
516 | || (optind < nonoption_flags_len \ | |
517 | && __getopt_nonoption_flags[optind] == '1')) | |
718e3744 | 518 | #else |
519 | # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') | |
520 | #endif | |
521 | ||
d62a17ae | 522 | if (nextchar == NULL || *nextchar == '\0') { |
523 | /* Advance to the next ARGV-element. */ | |
524 | ||
525 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has | |
526 | been | |
527 | moved back by the user (who may also have changed the | |
528 | arguments). */ | |
529 | if (last_nonopt > optind) | |
530 | last_nonopt = optind; | |
531 | if (first_nonopt > optind) | |
532 | first_nonopt = optind; | |
533 | ||
534 | if (ordering == PERMUTE) { | |
535 | /* If we have just processed some options following some | |
536 | non-options, | |
537 | exchange them so that the options come first. */ | |
538 | ||
539 | if (first_nonopt != last_nonopt | |
540 | && last_nonopt != optind) | |
541 | exchange((char **)argv); | |
542 | else if (last_nonopt != optind) | |
543 | first_nonopt = optind; | |
544 | ||
545 | /* Skip any additional non-options | |
546 | and extend the range of non-options previously | |
547 | skipped. */ | |
548 | ||
549 | while (optind < argc && NONOPTION_P) | |
550 | optind++; | |
551 | last_nonopt = optind; | |
552 | } | |
718e3744 | 553 | |
d62a17ae | 554 | /* The special ARGV-element `--' means premature end of options. |
555 | Skip it like a null option, | |
556 | then exchange with previous non-options as if it were an | |
557 | option, | |
558 | then skip everything else like a non-option. */ | |
718e3744 | 559 | |
d62a17ae | 560 | if (optind != argc && !strcmp(argv[optind], "--")) { |
561 | optind++; | |
718e3744 | 562 | |
d62a17ae | 563 | if (first_nonopt != last_nonopt |
564 | && last_nonopt != optind) | |
565 | exchange((char **)argv); | |
566 | else if (first_nonopt == last_nonopt) | |
567 | first_nonopt = optind; | |
568 | last_nonopt = argc; | |
718e3744 | 569 | |
d62a17ae | 570 | optind = argc; |
571 | } | |
718e3744 | 572 | |
d62a17ae | 573 | /* If we have done all the ARGV-elements, stop the scan |
574 | and back over any non-options that we skipped and permuted. | |
575 | */ | |
576 | ||
577 | if (optind == argc) { | |
578 | /* Set the next-arg-index to point at the non-options | |
579 | that we previously skipped, so the caller will digest | |
580 | them. */ | |
581 | if (first_nonopt != last_nonopt) | |
582 | optind = first_nonopt; | |
583 | return -1; | |
584 | } | |
718e3744 | 585 | |
d62a17ae | 586 | /* If we have come to a non-option and did not permute it, |
587 | either stop the scan or describe it to the caller and pass it | |
588 | by. */ | |
718e3744 | 589 | |
d62a17ae | 590 | if (NONOPTION_P) { |
591 | if (ordering == REQUIRE_ORDER) | |
592 | return -1; | |
593 | optarg = argv[optind++]; | |
594 | return 1; | |
595 | } | |
718e3744 | 596 | |
d62a17ae | 597 | /* We have found another option-ARGV-element. |
598 | Skip the initial punctuation. */ | |
718e3744 | 599 | |
d62a17ae | 600 | nextchar = (argv[optind] + 1 |
601 | + (longopts != NULL && argv[optind][1] == '-')); | |
718e3744 | 602 | } |
603 | ||
d62a17ae | 604 | /* Decode the current option-ARGV-element. */ |
605 | ||
606 | /* Check whether the ARGV-element is a long option. | |
607 | ||
608 | If long_only and the ARGV-element has the form "-f", where f is | |
609 | a valid short option, don't consider it an abbreviated form of | |
610 | a long option that starts with f. Otherwise there would be no | |
611 | way to give the -f short option. | |
612 | ||
613 | On the other hand, if there's a long option "fubar" and | |
614 | the ARGV-element is "-fu", do consider that an abbreviation of | |
615 | the long option, just like "--fu", and not "-f" with arg "u". | |
616 | ||
617 | This distinction seems to be the most useful approach. */ | |
618 | ||
619 | if (longopts != NULL | |
620 | && (argv[optind][1] == '-' | |
9d303b37 DL |
621 | || (long_only && (argv[optind][2] |
622 | || !my_index(optstring, argv[optind][1]))))) { | |
d62a17ae | 623 | char *nameend; |
624 | const struct option *p; | |
625 | const struct option *pfound = NULL; | |
626 | int exact = 0; | |
627 | int ambig = 0; | |
628 | int indfound = -1; | |
629 | int option_index; | |
630 | ||
631 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | |
632 | /* Do nothing. */; | |
633 | ||
634 | /* Test all long options for either exact match | |
635 | or abbreviated matches. */ | |
636 | for (p = longopts, option_index = 0; p->name; | |
637 | p++, option_index++) | |
638 | if (!strncmp(p->name, nextchar, nameend - nextchar)) { | |
639 | if ((unsigned int)(nameend - nextchar) | |
640 | == (unsigned int)strlen(p->name)) { | |
641 | /* Exact match found. */ | |
642 | pfound = p; | |
643 | indfound = option_index; | |
644 | exact = 1; | |
645 | break; | |
646 | } else if (pfound == NULL) { | |
647 | /* First nonexact match found. */ | |
648 | pfound = p; | |
649 | indfound = option_index; | |
650 | } else | |
651 | /* Second or later nonexact match found. | |
652 | */ | |
653 | ambig = 1; | |
654 | } | |
655 | ||
656 | if (ambig && !exact) { | |
657 | if (opterr) | |
658 | fprintf(stderr, | |
659 | _("%s: option `%s' is ambiguous\n"), | |
660 | argv[0], argv[optind]); | |
661 | nextchar += strlen(nextchar); | |
662 | optind++; | |
663 | optopt = 0; | |
664 | return '?'; | |
665 | } | |
718e3744 | 666 | |
d62a17ae | 667 | if (pfound != NULL) { |
668 | option_index = indfound; | |
669 | optind++; | |
670 | if (*nameend) { | |
671 | /* Don't test has_arg with >, because some C | |
672 | compilers don't | |
673 | allow it to be used on enums. */ | |
674 | if (pfound->has_arg) | |
675 | optarg = nameend + 1; | |
676 | else { | |
677 | if (opterr) { | |
678 | if (argv[optind - 1][1] == '-') | |
679 | /* --option */ | |
680 | fprintf(stderr, | |
681 | _("%s: option `--%s' doesn't allow an argument\n"), | |
682 | argv[0], | |
683 | pfound->name); | |
684 | else | |
685 | /* +option or -option */ | |
686 | fprintf(stderr, | |
687 | _("%s: option `%c%s' doesn't allow an argument\n"), | |
688 | argv[0], | |
689 | argv[optind - 1] | |
690 | [0], | |
691 | pfound->name); | |
692 | } | |
693 | ||
694 | nextchar += strlen(nextchar); | |
695 | ||
696 | optopt = pfound->val; | |
697 | return '?'; | |
698 | } | |
699 | } else if (pfound->has_arg == 1) { | |
700 | if (optind < argc) | |
701 | optarg = argv[optind++]; | |
702 | else { | |
703 | if (opterr) | |
704 | fprintf(stderr, | |
705 | _("%s: option `%s' requires an argument\n"), | |
706 | argv[0], | |
707 | argv[optind - 1]); | |
708 | nextchar += strlen(nextchar); | |
709 | optopt = pfound->val; | |
710 | return optstring[0] == ':' ? ':' : '?'; | |
711 | } | |
712 | } | |
713 | nextchar += strlen(nextchar); | |
714 | if (longind != NULL) | |
715 | *longind = option_index; | |
716 | if (pfound->flag) { | |
717 | *(pfound->flag) = pfound->val; | |
718 | return 0; | |
719 | } | |
720 | return pfound->val; | |
721 | } | |
718e3744 | 722 | |
d62a17ae | 723 | /* Can't find it as a long option. If this is not |
724 | getopt_long_only, | |
725 | or the option starts with '--' or is not a valid short | |
726 | option, then it's an error. | |
727 | Otherwise interpret it as a short option. */ | |
728 | if (!long_only || argv[optind][1] == '-' | |
729 | || my_index(optstring, *nextchar) == NULL) { | |
730 | if (opterr) { | |
731 | if (argv[optind][1] == '-') | |
732 | /* --option */ | |
733 | fprintf(stderr, | |
734 | _("%s: unrecognized option `--%s'\n"), | |
735 | argv[0], nextchar); | |
736 | else | |
737 | /* +option or -option */ | |
738 | fprintf(stderr, | |
739 | _("%s: unrecognized option `%c%s'\n"), | |
740 | argv[0], argv[optind][0], | |
741 | nextchar); | |
742 | } | |
743 | nextchar = (char *)""; | |
744 | optind++; | |
745 | optopt = 0; | |
746 | return '?'; | |
747 | } | |
718e3744 | 748 | } |
749 | ||
d62a17ae | 750 | /* Look at and handle the next short option-character. */ |
718e3744 | 751 | |
718e3744 | 752 | { |
d62a17ae | 753 | char c = *nextchar++; |
754 | char *temp = my_index(optstring, c); | |
755 | ||
756 | /* Increment `optind' when we start to process its last | |
757 | * character. */ | |
758 | if (*nextchar == '\0') | |
759 | ++optind; | |
760 | ||
761 | if (temp == NULL || c == ':') { | |
762 | if (opterr) { | |
763 | if (posixly_correct) | |
764 | /* 1003.2 specifies the format of this | |
765 | * message. */ | |
766 | fprintf(stderr, | |
767 | _("%s: illegal option -- %c\n"), | |
768 | argv[0], c); | |
769 | else | |
770 | fprintf(stderr, | |
771 | _("%s: invalid option -- %c\n"), | |
772 | argv[0], c); | |
773 | } | |
774 | optopt = c; | |
775 | return '?'; | |
718e3744 | 776 | } |
d62a17ae | 777 | /* Convenience. Treat POSIX -W foo same as long option --foo */ |
778 | if (temp[0] == 'W' && temp[1] == ';') { | |
779 | char *nameend; | |
780 | const struct option *p; | |
781 | const struct option *pfound = NULL; | |
782 | int exact = 0; | |
783 | int ambig = 0; | |
784 | int indfound = 0; | |
785 | int option_index; | |
786 | ||
787 | /* This is an option that requires an argument. */ | |
788 | if (*nextchar != '\0') { | |
789 | optarg = nextchar; | |
790 | /* If we end this ARGV-element by taking the | |
791 | rest as an arg, | |
792 | we must advance to the next element now. */ | |
793 | optind++; | |
794 | } else if (optind == argc) { | |
795 | if (opterr) { | |
796 | /* 1003.2 specifies the format of this | |
797 | * message. */ | |
798 | fprintf(stderr, | |
799 | _("%s: option requires an argument -- %c\n"), | |
800 | argv[0], c); | |
801 | } | |
802 | optopt = c; | |
803 | if (optstring[0] == ':') | |
804 | c = ':'; | |
805 | else | |
806 | c = '?'; | |
807 | return c; | |
808 | } else | |
809 | /* We already incremented `optind' once; | |
810 | increment it again when taking next ARGV-elt | |
811 | as argument. */ | |
812 | optarg = argv[optind++]; | |
813 | ||
814 | /* optarg is now the argument, see if it's in the | |
815 | table of longopts. */ | |
816 | ||
817 | for (nextchar = nameend = optarg; | |
818 | *nameend && *nameend != '='; nameend++) | |
819 | /* Do nothing. */; | |
820 | ||
821 | /* Test all long options for either exact match | |
822 | or abbreviated matches. */ | |
823 | for (p = longopts, option_index = 0; p->name; | |
824 | p++, option_index++) | |
825 | if (!strncmp(p->name, nextchar, | |
826 | nameend - nextchar)) { | |
827 | if ((unsigned int)(nameend - nextchar) | |
828 | == strlen(p->name)) { | |
829 | /* Exact match found. */ | |
830 | pfound = p; | |
831 | indfound = option_index; | |
832 | exact = 1; | |
833 | break; | |
834 | } else if (pfound == NULL) { | |
835 | /* First nonexact match found. | |
836 | */ | |
837 | pfound = p; | |
838 | indfound = option_index; | |
839 | } else | |
840 | /* Second or later nonexact | |
841 | * match found. */ | |
842 | ambig = 1; | |
843 | } | |
844 | if (ambig && !exact) { | |
845 | if (opterr) | |
846 | fprintf(stderr, | |
847 | _("%s: option `-W %s' is ambiguous\n"), | |
848 | argv[0], argv[optind]); | |
849 | nextchar += strlen(nextchar); | |
850 | optind++; | |
851 | return '?'; | |
852 | } | |
853 | if (pfound != NULL) { | |
854 | option_index = indfound; | |
855 | if (*nameend) { | |
856 | /* Don't test has_arg with >, because | |
857 | some C compilers don't | |
858 | allow it to be used on enums. */ | |
859 | if (pfound->has_arg) | |
860 | optarg = nameend + 1; | |
861 | else { | |
862 | if (opterr) | |
863 | fprintf(stderr, _("\ | |
864 | %s: option `-W %s' doesn't allow an argument\n"), | |
865 | argv[0], | |
866 | pfound->name); | |
867 | ||
868 | nextchar += strlen(nextchar); | |
869 | return '?'; | |
870 | } | |
871 | } else if (pfound->has_arg == 1) { | |
872 | if (optind < argc) | |
873 | optarg = argv[optind++]; | |
874 | else { | |
875 | if (opterr) | |
876 | fprintf(stderr, | |
877 | _("%s: option `%s' requires an argument\n"), | |
878 | argv[0], | |
879 | argv[optind | |
880 | - 1]); | |
881 | nextchar += strlen(nextchar); | |
882 | return optstring[0] == ':' | |
883 | ? ':' | |
884 | : '?'; | |
885 | } | |
886 | } | |
887 | nextchar += strlen(nextchar); | |
888 | if (longind != NULL) | |
889 | *longind = option_index; | |
890 | if (pfound->flag) { | |
891 | *(pfound->flag) = pfound->val; | |
892 | return 0; | |
893 | } | |
894 | return pfound->val; | |
895 | } | |
896 | nextchar = NULL; | |
897 | return 'W'; /* Let the application handle it. */ | |
718e3744 | 898 | } |
d62a17ae | 899 | if (temp[1] == ':') { |
900 | if (temp[2] == ':') { | |
901 | /* This is an option that accepts an argument | |
902 | * optionally. */ | |
903 | if (*nextchar != '\0') { | |
904 | optarg = nextchar; | |
905 | optind++; | |
906 | } else | |
907 | optarg = NULL; | |
908 | nextchar = NULL; | |
909 | } else { | |
910 | /* This is an option that requires an argument. | |
911 | */ | |
912 | if (*nextchar != '\0') { | |
913 | optarg = nextchar; | |
914 | /* If we end this ARGV-element by taking | |
915 | the rest as an arg, | |
916 | we must advance to the next element | |
917 | now. */ | |
918 | optind++; | |
919 | } else if (optind == argc) { | |
920 | if (opterr) { | |
921 | /* 1003.2 specifies the format | |
922 | * of this message. */ | |
923 | fprintf(stderr, | |
924 | _("%s: option requires an argument -- %c\n"), | |
925 | argv[0], c); | |
926 | } | |
927 | optopt = c; | |
928 | if (optstring[0] == ':') | |
929 | c = ':'; | |
930 | else | |
931 | c = '?'; | |
932 | } else | |
933 | /* We already incremented `optind' once; | |
934 | increment it again when taking next | |
935 | ARGV-elt as argument. */ | |
936 | optarg = argv[optind++]; | |
937 | nextchar = NULL; | |
938 | } | |
718e3744 | 939 | } |
d62a17ae | 940 | return c; |
941 | } | |
718e3744 | 942 | } |
943 | ||
0312f0cd | 944 | #ifdef REALLY_NEED_PLAIN_GETOPT |
945 | ||
d62a17ae | 946 | int getopt(argc, argv, optstring) int argc; |
947 | char *const *argv; | |
948 | const char *optstring; | |
718e3744 | 949 | { |
d62a17ae | 950 | return _getopt_internal(argc, argv, optstring, (const struct option *)0, |
951 | (int *)0, 0); | |
718e3744 | 952 | } |
953 | ||
0312f0cd | 954 | #endif /* REALLY_NEED_PLAIN_GETOPT */ |
955 | ||
d62a17ae | 956 | #endif /* Not ELIDE_CODE. */ |
6b0655a2 | 957 | |
718e3744 | 958 | #ifdef TEST |
959 | ||
960 | /* Compile with -DTEST to make an executable for use in testing | |
961 | the above definition of `getopt'. */ | |
962 | ||
d62a17ae | 963 | int main(argc, argv) int argc; |
964 | char **argv; | |
718e3744 | 965 | { |
d62a17ae | 966 | int c; |
967 | int digit_optind = 0; | |
968 | ||
969 | while (1) { | |
970 | int this_option_optind = optind ? optind : 1; | |
971 | ||
972 | c = getopt(argc, argv, "abc:d:0123456789"); | |
973 | if (c == -1) | |
974 | break; | |
975 | ||
976 | switch (c) { | |
977 | case '0': | |
978 | case '1': | |
979 | case '2': | |
980 | case '3': | |
981 | case '4': | |
982 | case '5': | |
983 | case '6': | |
984 | case '7': | |
985 | case '8': | |
986 | case '9': | |
987 | if (digit_optind != 0 | |
988 | && digit_optind != this_option_optind) | |
989 | printf("digits occur in two different argv-elements.\n"); | |
990 | digit_optind = this_option_optind; | |
991 | printf("option %c\n", c); | |
992 | break; | |
993 | ||
994 | case 'a': | |
995 | printf("option a\n"); | |
996 | break; | |
997 | ||
998 | case 'b': | |
999 | printf("option b\n"); | |
1000 | break; | |
1001 | ||
1002 | case 'c': | |
1003 | printf("option c with value `%s'\n", optarg); | |
1004 | break; | |
1005 | ||
1006 | case '?': | |
1007 | break; | |
1008 | ||
1009 | default: | |
1010 | printf("?? getopt returned character code 0%o ??\n", c); | |
1011 | } | |
718e3744 | 1012 | } |
718e3744 | 1013 | |
d62a17ae | 1014 | if (optind < argc) { |
1015 | printf("non-option ARGV-elements: "); | |
1016 | while (optind < argc) | |
1017 | printf("%s ", argv[optind++]); | |
1018 | printf("\n"); | |
1019 | } | |
718e3744 | 1020 | |
d62a17ae | 1021 | exit(0); |
718e3744 | 1022 | } |
1023 | ||
1024 | #endif /* TEST */ |