|
1 /* from http://www.pwilson.net/getopt.html */ |
|
2 |
|
3 /* Getopt for GNU. |
|
4 NOTE: getopt is now part of the C library, so if you don't know what |
|
5 "Keep this file name-space clean" means, talk to drepper@gnu.org |
|
6 before changing it! |
|
7 Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001 |
|
8 Free Software Foundation, Inc. |
|
9 This file is part of the GNU C Library. |
|
10 |
|
11 The GNU C Library is free software; you can redistribute it and/or |
|
12 modify it under the terms of the GNU Lesser General Public |
|
13 License as published by the Free Software Foundation; either |
|
14 version 2.1 of the License, or (at your option) any later version. |
|
15 |
|
16 The GNU C Library is distributed in the hope that it will be useful, |
|
17 but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
19 Lesser General Public License for more details. |
|
20 |
|
21 You should have received a copy of the GNU Lesser General Public |
|
22 License along with the GNU C Library; if not, write to the Free |
|
23 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
|
24 02111-1307 USA. */ |
|
25 |
|
26 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. |
|
27 Ditto for AIX 3.2 and <stdlib.h>. */ |
|
28 #ifndef _NO_PROTO |
|
29 # define _NO_PROTO |
|
30 #endif |
|
31 |
|
32 #ifdef HAVE_CONFIG_H |
|
33 # include <config.h> |
|
34 #endif |
|
35 |
|
36 #if !defined __STDC__ || !__STDC__ |
|
37 /* This is a separate conditional since some stdc systems |
|
38 reject `defined (const)'. */ |
|
39 # ifndef const |
|
40 # define const |
|
41 # endif |
|
42 #endif |
|
43 |
|
44 #include <stdio.h> |
|
45 |
|
46 /* Comment out all this code if we are using the GNU C Library, and are not |
|
47 actually compiling the library itself. This code is part of the GNU C |
|
48 Library, but also included in many other GNU distributions. Compiling |
|
49 and linking in this code is a waste when using the GNU C library |
|
50 (especially if it is a shared library). Rather than having every GNU |
|
51 program understand `configure --with-gnu-libc' and omit the object files, |
|
52 it is simpler to just do this in the source for each such file. */ |
|
53 |
|
54 #define GETOPT_INTERFACE_VERSION 2 |
|
55 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 |
|
56 # include <gnu-versions.h> |
|
57 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION |
|
58 # define ELIDE_CODE |
|
59 # endif |
|
60 #endif |
|
61 |
|
62 #ifndef ELIDE_CODE |
|
63 |
|
64 |
|
65 /* This needs to come after some library #include |
|
66 to get __GNU_LIBRARY__ defined. */ |
|
67 #ifdef __GNU_LIBRARY__ |
|
68 /* Don't include stdlib.h for non-GNU C libraries because some of them |
|
69 contain conflicting prototypes for getopt. */ |
|
70 # include <stdlib.h> |
|
71 # include <unistd.h> |
|
72 #endif /* GNU C library. */ |
|
73 |
|
74 #ifdef VMS |
|
75 # include <unixlib.h> |
|
76 # if HAVE_STRING_H - 0 |
|
77 # include <string.h> |
|
78 # endif |
|
79 #endif |
|
80 |
|
81 #ifndef _ |
|
82 /* This is for other GNU distributions with internationalized messages. */ |
|
83 # if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC |
|
84 # include <libintl.h> |
|
85 # ifndef _ |
|
86 # define _(msgid) gettext (msgid) |
|
87 # endif |
|
88 # else |
|
89 # define _(msgid) (msgid) |
|
90 # endif |
|
91 # if defined _LIBC && defined USE_IN_LIBIO |
|
92 # include <wchar.h> |
|
93 # endif |
|
94 #endif |
|
95 |
|
96 /* This version of `getopt' appears to the caller like standard Unix `getopt' |
|
97 but it behaves differently for the user, since it allows the user |
|
98 to intersperse the options with the other arguments. |
|
99 |
|
100 As `getopt' works, it permutes the elements of ARGV so that, |
|
101 when it is done, all the options precede everything else. Thus |
|
102 all application programs are extended to handle flexible argument order. |
|
103 |
|
104 Setting the environment variable POSIXLY_CORRECT disables permutation. |
|
105 Then the behavior is completely standard. |
|
106 |
|
107 GNU application programs can use a third alternative mode in which |
|
108 they can distinguish the relative order of options and other arguments. */ |
|
109 |
|
110 #include "getopt.h" |
|
111 |
|
112 /* For communication from `getopt' to the caller. |
|
113 When `getopt' finds an option that takes an argument, |
|
114 the argument value is returned here. |
|
115 Also, when `ordering' is RETURN_IN_ORDER, |
|
116 each non-option ARGV-element is returned here. */ |
|
117 |
|
118 char *optarg; |
|
119 |
|
120 /* Index in ARGV of the next element to be scanned. |
|
121 This is used for communication to and from the caller |
|
122 and for communication between successive calls to `getopt'. |
|
123 |
|
124 On entry to `getopt', zero means this is the first call; initialize. |
|
125 |
|
126 When `getopt' returns -1, this is the index of the first of the |
|
127 non-option elements that the caller should itself scan. |
|
128 |
|
129 Otherwise, `optind' communicates from one call to the next |
|
130 how much of ARGV has been scanned so far. */ |
|
131 |
|
132 /* 1003.2 says this must be 1 before any call. */ |
|
133 int optind = 1; |
|
134 |
|
135 /* Formerly, initialization of getopt depended on optind==0, which |
|
136 causes problems with re-calling getopt as programs generally don't |
|
137 know that. */ |
|
138 |
|
139 int __getopt_initialized; |
|
140 |
|
141 /* The next char to be scanned in the option-element |
|
142 in which the last option character we returned was found. |
|
143 This allows us to pick up the scan where we left off. |
|
144 |
|
145 If this is zero, or a null string, it means resume the scan |
|
146 by advancing to the next ARGV-element. */ |
|
147 |
|
148 static char *nextchar; |
|
149 |
|
150 /* Callers store zero here to inhibit the error message |
|
151 for unrecognized options. */ |
|
152 |
|
153 int opterr = 1; |
|
154 |
|
155 /* Set to an option character which was unrecognized. |
|
156 This must be initialized on some systems to avoid linking in the |
|
157 system's own getopt implementation. */ |
|
158 |
|
159 int optopt = '?'; |
|
160 |
|
161 /* Describe how to deal with options that follow non-option ARGV-elements. |
|
162 |
|
163 If the caller did not specify anything, |
|
164 the default is REQUIRE_ORDER if the environment variable |
|
165 POSIXLY_CORRECT is defined, PERMUTE otherwise. |
|
166 |
|
167 REQUIRE_ORDER means don't recognize them as options; |
|
168 stop option processing when the first non-option is seen. |
|
169 This is what Unix does. |
|
170 This mode of operation is selected by either setting the environment |
|
171 variable POSIXLY_CORRECT, or using `+' as the first character |
|
172 of the list of option characters. |
|
173 |
|
174 PERMUTE is the default. We permute the contents of ARGV as we scan, |
|
175 so that eventually all the non-options are at the end. This allows options |
|
176 to be given in any order, even with programs that were not written to |
|
177 expect this. |
|
178 |
|
179 RETURN_IN_ORDER is an option available to programs that were written |
|
180 to expect options and other ARGV-elements in any order and that care about |
|
181 the ordering of the two. We describe each non-option ARGV-element |
|
182 as if it were the argument of an option with character code 1. |
|
183 Using `-' as the first character of the list of option characters |
|
184 selects this mode of operation. |
|
185 |
|
186 The special argument `--' forces an end of option-scanning regardless |
|
187 of the value of `ordering'. In the case of RETURN_IN_ORDER, only |
|
188 `--' can cause `getopt' to return -1 with `optind' != ARGC. */ |
|
189 |
|
190 static enum |
|
191 { |
|
192 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
|
193 } ordering; |
|
194 |
|
195 /* Value of POSIXLY_CORRECT environment variable. */ |
|
196 static char *posixly_correct; |
|
197 |
|
198 #ifdef __GNU_LIBRARY__ |
|
199 /* We want to avoid inclusion of string.h with non-GNU libraries |
|
200 because there are many ways it can cause trouble. |
|
201 On some systems, it contains special magic macros that don't work |
|
202 in GCC. */ |
|
203 # include <string.h> |
|
204 # define my_index strchr |
|
205 #else |
|
206 |
|
207 # if HAVE_STRING_H || WIN32 /* Pete Wilson mod 7/28/02 */ |
|
208 # include <string.h> |
|
209 # else |
|
210 # include <strings.h> |
|
211 # endif |
|
212 |
|
213 /* Avoid depending on library functions or files |
|
214 whose names are inconsistent. */ |
|
215 |
|
216 #ifndef getenv |
|
217 extern char *getenv (); |
|
218 #endif |
|
219 |
|
220 static char * |
|
221 my_index (str, chr) |
|
222 const char *str; |
|
223 int chr; |
|
224 { |
|
225 while (*str) |
|
226 { |
|
227 if (*str == chr) |
|
228 return (char *) str; |
|
229 str++; |
|
230 } |
|
231 return 0; |
|
232 } |
|
233 |
|
234 /* If using GCC, we can safely declare strlen this way. |
|
235 If not using GCC, it is ok not to declare it. */ |
|
236 #ifdef __GNUC__ |
|
237 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. |
|
238 That was relevant to code that was here before. */ |
|
239 # if (!defined __STDC__ || !__STDC__) && !defined strlen |
|
240 /* gcc with -traditional declares the built-in strlen to return int, |
|
241 and has done so at least since version 2.4.5. -- rms. */ |
|
242 extern int strlen (const char *); |
|
243 # endif /* not __STDC__ */ |
|
244 #endif /* __GNUC__ */ |
|
245 |
|
246 #endif /* not __GNU_LIBRARY__ */ |
|
247 |
|
248 /* Handle permutation of arguments. */ |
|
249 |
|
250 /* Describe the part of ARGV that contains non-options that have |
|
251 been skipped. `first_nonopt' is the index in ARGV of the first of them; |
|
252 `last_nonopt' is the index after the last of them. */ |
|
253 |
|
254 static int first_nonopt; |
|
255 static int last_nonopt; |
|
256 |
|
257 #ifdef _LIBC |
|
258 /* Stored original parameters. |
|
259 XXX This is no good solution. We should rather copy the args so |
|
260 that we can compare them later. But we must not use malloc(3). */ |
|
261 extern int __libc_argc; |
|
262 extern char **__libc_argv; |
|
263 |
|
264 /* Bash 2.0 gives us an environment variable containing flags |
|
265 indicating ARGV elements that should not be considered arguments. */ |
|
266 |
|
267 # ifdef USE_NONOPTION_FLAGS |
|
268 /* Defined in getopt_init.c */ |
|
269 extern char *__getopt_nonoption_flags; |
|
270 |
|
271 static int nonoption_flags_max_len; |
|
272 static int nonoption_flags_len; |
|
273 # endif |
|
274 |
|
275 # ifdef USE_NONOPTION_FLAGS |
|
276 # define SWAP_FLAGS(ch1, ch2) \ |
|
277 if (nonoption_flags_len > 0) \ |
|
278 { \ |
|
279 char __tmp = __getopt_nonoption_flags[ch1]; \ |
|
280 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ |
|
281 __getopt_nonoption_flags[ch2] = __tmp; \ |
|
282 } |
|
283 # else |
|
284 # define SWAP_FLAGS(ch1, ch2) |
|
285 # endif |
|
286 #else /* !_LIBC */ |
|
287 # define SWAP_FLAGS(ch1, ch2) |
|
288 #endif /* _LIBC */ |
|
289 |
|
290 /* Exchange two adjacent subsequences of ARGV. |
|
291 One subsequence is elements [first_nonopt,last_nonopt) |
|
292 which contains all the non-options that have been skipped so far. |
|
293 The other is elements [last_nonopt,optind), which contains all |
|
294 the options processed since those non-options were skipped. |
|
295 |
|
296 `first_nonopt' and `last_nonopt' are relocated so that they describe |
|
297 the new indices of the non-options in ARGV after they are moved. */ |
|
298 |
|
299 #if defined __STDC__ && __STDC__ |
|
300 static void exchange (char **); |
|
301 #endif |
|
302 |
|
303 static void |
|
304 exchange (argv) |
|
305 char **argv; |
|
306 { |
|
307 int bottom = first_nonopt; |
|
308 int middle = last_nonopt; |
|
309 int top = optind; |
|
310 char *tem; |
|
311 |
|
312 /* Exchange the shorter segment with the far end of the longer segment. |
|
313 That puts the shorter segment into the right place. |
|
314 It leaves the longer segment in the right place overall, |
|
315 but it consists of two parts that need to be swapped next. */ |
|
316 |
|
317 #if defined _LIBC && defined USE_NONOPTION_FLAGS |
|
318 /* First make sure the handling of the `__getopt_nonoption_flags' |
|
319 string can work normally. Our top argument must be in the range |
|
320 of the string. */ |
|
321 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) |
|
322 { |
|
323 /* We must extend the array. The user plays games with us and |
|
324 presents new arguments. */ |
|
325 char *new_str = malloc (top + 1); |
|
326 if (new_str == NULL) |
|
327 nonoption_flags_len = nonoption_flags_max_len = 0; |
|
328 else |
|
329 { |
|
330 memset (__mempcpy (new_str, __getopt_nonoption_flags, |
|
331 nonoption_flags_max_len), |
|
332 '\0', top + 1 - nonoption_flags_max_len); |
|
333 nonoption_flags_max_len = top + 1; |
|
334 __getopt_nonoption_flags = new_str; |
|
335 } |
|
336 } |
|
337 #endif |
|
338 |
|
339 while (top > middle && middle > bottom) |
|
340 { |
|
341 if (top - middle > middle - bottom) |
|
342 { |
|
343 /* Bottom segment is the short one. */ |
|
344 int len = middle - bottom; |
|
345 register int i; |
|
346 |
|
347 /* Swap it with the top part of the top segment. */ |
|
348 for (i = 0; i < len; i++) |
|
349 { |
|
350 tem = argv[bottom + i]; |
|
351 argv[bottom + i] = argv[top - (middle - bottom) + i]; |
|
352 argv[top - (middle - bottom) + i] = tem; |
|
353 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); |
|
354 } |
|
355 /* Exclude the moved bottom segment from further swapping. */ |
|
356 top -= len; |
|
357 } |
|
358 else |
|
359 { |
|
360 /* Top segment is the short one. */ |
|
361 int len = top - middle; |
|
362 register int i; |
|
363 |
|
364 /* Swap it with the bottom part of the bottom segment. */ |
|
365 for (i = 0; i < len; i++) |
|
366 { |
|
367 tem = argv[bottom + i]; |
|
368 argv[bottom + i] = argv[middle + i]; |
|
369 argv[middle + i] = tem; |
|
370 SWAP_FLAGS (bottom + i, middle + i); |
|
371 } |
|
372 /* Exclude the moved top segment from further swapping. */ |
|
373 bottom += len; |
|
374 } |
|
375 } |
|
376 |
|
377 /* Update records for the slots the non-options now occupy. */ |
|
378 |
|
379 first_nonopt += (optind - last_nonopt); |
|
380 last_nonopt = optind; |
|
381 } |
|
382 |
|
383 /* Initialize the internal data when the first call is made. */ |
|
384 |
|
385 #if defined __STDC__ && __STDC__ |
|
386 static const char *_getopt_initialize (int, char *const *, const char *); |
|
387 #endif |
|
388 static const char * |
|
389 _getopt_initialize (argc, argv, optstring) |
|
390 int argc; |
|
391 char *const *argv; |
|
392 const char *optstring; |
|
393 { |
|
394 /* Start processing options with ARGV-element 1 (since ARGV-element 0 |
|
395 is the program name); the sequence of previously skipped |
|
396 non-option ARGV-elements is empty. */ |
|
397 |
|
398 first_nonopt = last_nonopt = optind; |
|
399 |
|
400 nextchar = NULL; |
|
401 |
|
402 posixly_correct = getenv ("POSIXLY_CORRECT"); |
|
403 |
|
404 /* Determine how to handle the ordering of options and nonoptions. */ |
|
405 |
|
406 if (optstring[0] == '-') |
|
407 { |
|
408 ordering = RETURN_IN_ORDER; |
|
409 ++optstring; |
|
410 } |
|
411 else if (optstring[0] == '+') |
|
412 { |
|
413 ordering = REQUIRE_ORDER; |
|
414 ++optstring; |
|
415 } |
|
416 else if (posixly_correct != NULL) |
|
417 ordering = REQUIRE_ORDER; |
|
418 else |
|
419 ordering = PERMUTE; |
|
420 |
|
421 #if defined _LIBC && defined USE_NONOPTION_FLAGS |
|
422 if (posixly_correct == NULL |
|
423 && argc == __libc_argc && argv == __libc_argv) |
|
424 { |
|
425 if (nonoption_flags_max_len == 0) |
|
426 { |
|
427 if (__getopt_nonoption_flags == NULL |
|
428 || __getopt_nonoption_flags[0] == '\0') |
|
429 nonoption_flags_max_len = -1; |
|
430 else |
|
431 { |
|
432 const char *orig_str = __getopt_nonoption_flags; |
|
433 int len = nonoption_flags_max_len = strlen (orig_str); |
|
434 if (nonoption_flags_max_len < argc) |
|
435 nonoption_flags_max_len = argc; |
|
436 __getopt_nonoption_flags = |
|
437 (char *) malloc (nonoption_flags_max_len); |
|
438 if (__getopt_nonoption_flags == NULL) |
|
439 nonoption_flags_max_len = -1; |
|
440 else |
|
441 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), |
|
442 '\0', nonoption_flags_max_len - len); |
|
443 } |
|
444 } |
|
445 nonoption_flags_len = nonoption_flags_max_len; |
|
446 } |
|
447 else |
|
448 nonoption_flags_len = 0; |
|
449 #endif |
|
450 |
|
451 return optstring; |
|
452 } |
|
453 |
|
454 /* Scan elements of ARGV (whose length is ARGC) for option characters |
|
455 given in OPTSTRING. |
|
456 |
|
457 If an element of ARGV starts with '-', and is not exactly "-" or "--", |
|
458 then it is an option element. The characters of this element |
|
459 (aside from the initial '-') are option characters. If `getopt' |
|
460 is called repeatedly, it returns successively each of the option characters |
|
461 from each of the option elements. |
|
462 |
|
463 If `getopt' finds another option character, it returns that character, |
|
464 updating `optind' and `nextchar' so that the next call to `getopt' can |
|
465 resume the scan with the following option character or ARGV-element. |
|
466 |
|
467 If there are no more option characters, `getopt' returns -1. |
|
468 Then `optind' is the index in ARGV of the first ARGV-element |
|
469 that is not an option. (The ARGV-elements have been permuted |
|
470 so that those that are not options now come last.) |
|
471 |
|
472 OPTSTRING is a string containing the legitimate option characters. |
|
473 If an option character is seen that is not listed in OPTSTRING, |
|
474 return '?' after printing an error message. If you set `opterr' to |
|
475 zero, the error message is suppressed but we still return '?'. |
|
476 |
|
477 If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
|
478 so the following text in the same ARGV-element, or the text of the following |
|
479 ARGV-element, is returned in `optarg'. Two colons mean an option that |
|
480 wants an optional arg; if there is text in the current ARGV-element, |
|
481 it is returned in `optarg', otherwise `optarg' is set to zero. |
|
482 |
|
483 If OPTSTRING starts with `-' or `+', it requests different methods of |
|
484 handling the non-option ARGV-elements. |
|
485 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
|
486 |
|
487 Long-named options begin with `--' instead of `-'. |
|
488 Their names may be abbreviated as long as the abbreviation is unique |
|
489 or is an exact match for some defined option. If they have an |
|
490 argument, it follows the option name in the same ARGV-element, separated |
|
491 from the option name by a `=', or else the in next ARGV-element. |
|
492 When `getopt' finds a long-named option, it returns 0 if that option's |
|
493 `flag' field is nonzero, the value of the option's `val' field |
|
494 if the `flag' field is zero. |
|
495 |
|
496 The elements of ARGV aren't really const, because we permute them. |
|
497 But we pretend they're const in the prototype to be compatible |
|
498 with other systems. |
|
499 |
|
500 LONGOPTS is a vector of `struct option' terminated by an |
|
501 element containing a name which is zero. |
|
502 |
|
503 LONGIND returns the index in LONGOPT of the long-named option found. |
|
504 It is only valid when a long-named option has been found by the most |
|
505 recent call. |
|
506 |
|
507 If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
|
508 long-named options. */ |
|
509 |
|
510 int |
|
511 _getopt_internal (argc, argv, optstring, longopts, longind, long_only) |
|
512 int argc; |
|
513 char *const *argv; |
|
514 const char *optstring; |
|
515 const struct option *longopts; |
|
516 int *longind; |
|
517 int long_only; |
|
518 { |
|
519 int print_errors = opterr; |
|
520 if (optstring[0] == ':') |
|
521 print_errors = 0; |
|
522 |
|
523 if (argc < 1) |
|
524 return -1; |
|
525 |
|
526 optarg = NULL; |
|
527 |
|
528 if (optind == 0 || !__getopt_initialized) |
|
529 { |
|
530 if (optind == 0) |
|
531 optind = 1; /* Don't scan ARGV[0], the program name. */ |
|
532 optstring = _getopt_initialize (argc, argv, optstring); |
|
533 __getopt_initialized = 1; |
|
534 } |
|
535 |
|
536 /* Test whether ARGV[optind] points to a non-option argument. |
|
537 Either it does not have option syntax, or there is an environment flag |
|
538 from the shell indicating it is not an option. The later information |
|
539 is only used when the used in the GNU libc. */ |
|
540 #if defined _LIBC && defined USE_NONOPTION_FLAGS |
|
541 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ |
|
542 || (optind < nonoption_flags_len \ |
|
543 && __getopt_nonoption_flags[optind] == '1')) |
|
544 #else |
|
545 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') |
|
546 #endif |
|
547 |
|
548 if (nextchar == NULL || *nextchar == '\0') |
|
549 { |
|
550 /* Advance to the next ARGV-element. */ |
|
551 |
|
552 /* Give FIRST_NONOPT and LAST_NONOPT rational values if OPTIND has been |
|
553 moved back by the user (who may also have changed the arguments). */ |
|
554 if (last_nonopt > optind) |
|
555 last_nonopt = optind; |
|
556 if (first_nonopt > optind) |
|
557 first_nonopt = optind; |
|
558 |
|
559 if (ordering == PERMUTE) |
|
560 { |
|
561 /* If we have just processed some options following some non-options, |
|
562 exchange them so that the options come first. */ |
|
563 |
|
564 if (first_nonopt != last_nonopt && last_nonopt != optind) |
|
565 exchange ((char **) argv); |
|
566 else if (last_nonopt != optind) |
|
567 first_nonopt = optind; |
|
568 |
|
569 /* Skip any additional non-options |
|
570 and extend the range of non-options previously skipped. */ |
|
571 |
|
572 while (optind < argc && NONOPTION_P) |
|
573 optind++; |
|
574 last_nonopt = optind; |
|
575 } |
|
576 |
|
577 /* The special ARGV-element `--' means premature end of options. |
|
578 Skip it like a null option, |
|
579 then exchange with previous non-options as if it were an option, |
|
580 then skip everything else like a non-option. */ |
|
581 |
|
582 if (optind != argc && !strcmp (argv[optind], "--")) |
|
583 { |
|
584 optind++; |
|
585 |
|
586 if (first_nonopt != last_nonopt && last_nonopt != optind) |
|
587 exchange ((char **) argv); |
|
588 else if (first_nonopt == last_nonopt) |
|
589 first_nonopt = optind; |
|
590 last_nonopt = argc; |
|
591 |
|
592 optind = argc; |
|
593 } |
|
594 |
|
595 /* If we have done all the ARGV-elements, stop the scan |
|
596 and back over any non-options that we skipped and permuted. */ |
|
597 |
|
598 if (optind == argc) |
|
599 { |
|
600 /* Set the next-arg-index to point at the non-options |
|
601 that we previously skipped, so the caller will digest them. */ |
|
602 if (first_nonopt != last_nonopt) |
|
603 optind = first_nonopt; |
|
604 return -1; |
|
605 } |
|
606 |
|
607 /* If we have come to a non-option and did not permute it, |
|
608 either stop the scan or describe it to the caller and pass it by. */ |
|
609 |
|
610 if (NONOPTION_P) |
|
611 { |
|
612 if (ordering == REQUIRE_ORDER) |
|
613 return -1; |
|
614 optarg = argv[optind++]; |
|
615 return 1; |
|
616 } |
|
617 |
|
618 /* We have found another option-ARGV-element. |
|
619 Skip the initial punctuation. */ |
|
620 |
|
621 nextchar = (argv[optind] + 1 |
|
622 + (longopts != NULL && argv[optind][1] == '-')); |
|
623 } |
|
624 |
|
625 /* Decode the current option-ARGV-element. */ |
|
626 |
|
627 /* Check whether the ARGV-element is a long option. |
|
628 |
|
629 If long_only and the ARGV-element has the form "-f", where f is |
|
630 a valid short option, don't consider it an abbreviated form of |
|
631 a long option that starts with f. Otherwise there would be no |
|
632 way to give the -f short option. |
|
633 |
|
634 On the other hand, if there's a long option "fubar" and |
|
635 the ARGV-element is "-fu", do consider that an abbreviation of |
|
636 the long option, just like "--fu", and not "-f" with arg "u". |
|
637 |
|
638 This distinction seems to be the most useful approach. */ |
|
639 |
|
640 if (longopts != NULL |
|
641 && (argv[optind][1] == '-' |
|
642 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) |
|
643 { |
|
644 char *nameend; |
|
645 const struct option *p; |
|
646 const struct option *pfound = NULL; |
|
647 int exact = 0; |
|
648 int ambig = 0; |
|
649 int indfound = -1; |
|
650 int option_index; |
|
651 |
|
652 for (nameend = nextchar; *nameend && *nameend != '='; nameend++) |
|
653 /* Do nothing. */ ; |
|
654 |
|
655 /* Test all long options for either exact match |
|
656 or abbreviated matches. */ |
|
657 for (p = longopts, option_index = 0; p->name; p++, option_index++) |
|
658 if (!strncmp (p->name, nextchar, nameend - nextchar)) |
|
659 { |
|
660 if ((unsigned int) (nameend - nextchar) |
|
661 == (unsigned int) strlen (p->name)) |
|
662 { |
|
663 /* Exact match found. */ |
|
664 pfound = p; |
|
665 indfound = option_index; |
|
666 exact = 1; |
|
667 break; |
|
668 } |
|
669 else if (pfound == NULL) |
|
670 { |
|
671 /* First nonexact match found. */ |
|
672 pfound = p; |
|
673 indfound = option_index; |
|
674 } |
|
675 else if (long_only |
|
676 || pfound->has_arg != p->has_arg |
|
677 || pfound->flag != p->flag |
|
678 || pfound->val != p->val) |
|
679 /* Second or later nonexact match found. */ |
|
680 ambig = 1; |
|
681 } |
|
682 |
|
683 if (ambig && !exact) |
|
684 { |
|
685 if (print_errors) |
|
686 { |
|
687 #if defined _LIBC && defined USE_IN_LIBIO |
|
688 char *buf; |
|
689 |
|
690 __asprintf (&buf, _("%s: option `%s' is ambiguous\n"), |
|
691 argv[0], argv[optind]); |
|
692 |
|
693 if (_IO_fwide (stderr, 0) > 0) |
|
694 __fwprintf (stderr, L"%s", buf); |
|
695 else |
|
696 fputs (buf, stderr); |
|
697 |
|
698 free (buf); |
|
699 #else |
|
700 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
|
701 argv[0], argv[optind]); |
|
702 #endif |
|
703 } |
|
704 nextchar += strlen (nextchar); |
|
705 optind++; |
|
706 optopt = 0; |
|
707 return '?'; |
|
708 } |
|
709 |
|
710 if (pfound != NULL) |
|
711 { |
|
712 option_index = indfound; |
|
713 optind++; |
|
714 if (*nameend) |
|
715 { |
|
716 /* Don't test has_arg with >, because some C compilers don't |
|
717 allow it to be used on enums. */ |
|
718 if (pfound->has_arg) |
|
719 optarg = nameend + 1; |
|
720 else |
|
721 { |
|
722 if (print_errors) |
|
723 { |
|
724 #if defined _LIBC && defined USE_IN_LIBIO |
|
725 char *buf; |
|
726 #endif |
|
727 |
|
728 if (argv[optind - 1][1] == '-') |
|
729 { |
|
730 /* --option */ |
|
731 #if defined _LIBC && defined USE_IN_LIBIO |
|
732 __asprintf (&buf, _("\ |
|
733 %s: option `--%s' doesn't allow an argument\n"), |
|
734 argv[0], pfound->name); |
|
735 #else |
|
736 fprintf (stderr, _("\ |
|
737 %s: option `--%s' doesn't allow an argument\n"), |
|
738 argv[0], pfound->name); |
|
739 #endif |
|
740 } |
|
741 else |
|
742 { |
|
743 /* +option or -option */ |
|
744 #if defined _LIBC && defined USE_IN_LIBIO |
|
745 __asprintf (&buf, _("\ |
|
746 %s: option `%c%s' doesn't allow an argument\n"), |
|
747 argv[0], argv[optind - 1][0], |
|
748 pfound->name); |
|
749 #else |
|
750 fprintf (stderr, _("\ |
|
751 %s: option `%c%s' doesn't allow an argument\n"), |
|
752 argv[0], argv[optind - 1][0], pfound->name); |
|
753 #endif |
|
754 } |
|
755 |
|
756 #if defined _LIBC && defined USE_IN_LIBIO |
|
757 if (_IO_fwide (stderr, 0) > 0) |
|
758 __fwprintf (stderr, L"%s", buf); |
|
759 else |
|
760 fputs (buf, stderr); |
|
761 |
|
762 free (buf); |
|
763 #endif |
|
764 } |
|
765 |
|
766 nextchar += strlen (nextchar); |
|
767 |
|
768 optopt = pfound->val; |
|
769 return '?'; |
|
770 } |
|
771 } |
|
772 else if (pfound->has_arg == 1) |
|
773 { |
|
774 if (optind < argc) |
|
775 optarg = argv[optind++]; |
|
776 else |
|
777 { |
|
778 if (print_errors) |
|
779 { |
|
780 #if defined _LIBC && defined USE_IN_LIBIO |
|
781 char *buf; |
|
782 |
|
783 __asprintf (&buf, |
|
784 _("%s: option `%s' requires an argument\n"), |
|
785 argv[0], argv[optind - 1]); |
|
786 |
|
787 if (_IO_fwide (stderr, 0) > 0) |
|
788 __fwprintf (stderr, L"%s", buf); |
|
789 else |
|
790 fputs (buf, stderr); |
|
791 |
|
792 free (buf); |
|
793 #else |
|
794 fprintf (stderr, |
|
795 _("%s: option `%s' requires an argument\n"), |
|
796 argv[0], argv[optind - 1]); |
|
797 #endif |
|
798 } |
|
799 nextchar += strlen (nextchar); |
|
800 optopt = pfound->val; |
|
801 return optstring[0] == ':' ? ':' : '?'; |
|
802 } |
|
803 } |
|
804 nextchar += strlen (nextchar); |
|
805 if (longind != NULL) |
|
806 *longind = option_index; |
|
807 if (pfound->flag) |
|
808 { |
|
809 *(pfound->flag) = pfound->val; |
|
810 return 0; |
|
811 } |
|
812 return pfound->val; |
|
813 } |
|
814 |
|
815 /* Can't find it as a long option. If this is not getopt_long_only, |
|
816 or the option starts with '--' or is not a valid short |
|
817 option, then it's an error. |
|
818 Otherwise interpret it as a short option. */ |
|
819 if (!long_only || argv[optind][1] == '-' |
|
820 || my_index (optstring, *nextchar) == NULL) |
|
821 { |
|
822 if (print_errors) |
|
823 { |
|
824 #if defined _LIBC && defined USE_IN_LIBIO |
|
825 char *buf; |
|
826 #endif |
|
827 |
|
828 if (argv[optind][1] == '-') |
|
829 { |
|
830 /* --option */ |
|
831 #if defined _LIBC && defined USE_IN_LIBIO |
|
832 __asprintf (&buf, _("%s: unrecognized option `--%s'\n"), |
|
833 argv[0], nextchar); |
|
834 #else |
|
835 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
|
836 argv[0], nextchar); |
|
837 #endif |
|
838 } |
|
839 else |
|
840 { |
|
841 /* +option or -option */ |
|
842 #if defined _LIBC && defined USE_IN_LIBIO |
|
843 __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"), |
|
844 argv[0], argv[optind][0], nextchar); |
|
845 #else |
|
846 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
|
847 argv[0], argv[optind][0], nextchar); |
|
848 #endif |
|
849 } |
|
850 |
|
851 #if defined _LIBC && defined USE_IN_LIBIO |
|
852 if (_IO_fwide (stderr, 0) > 0) |
|
853 __fwprintf (stderr, L"%s", buf); |
|
854 else |
|
855 fputs (buf, stderr); |
|
856 |
|
857 free (buf); |
|
858 #endif |
|
859 } |
|
860 nextchar = (char *) ""; |
|
861 optind++; |
|
862 optopt = 0; |
|
863 return '?'; |
|
864 } |
|
865 } |
|
866 |
|
867 /* Look at and handle the next short option-character. */ |
|
868 |
|
869 { |
|
870 char c = *nextchar++; |
|
871 char *temp = my_index (optstring, c); |
|
872 |
|
873 /* Increment `optind' when we start to process its last character. */ |
|
874 if (*nextchar == '\0') |
|
875 ++optind; |
|
876 |
|
877 if (temp == NULL || c == ':') |
|
878 { |
|
879 if (print_errors) |
|
880 { |
|
881 #if defined _LIBC && defined USE_IN_LIBIO |
|
882 char *buf; |
|
883 #endif |
|
884 |
|
885 if (posixly_correct) |
|
886 { |
|
887 /* 1003.2 specifies the format of this message. */ |
|
888 #if defined _LIBC && defined USE_IN_LIBIO |
|
889 __asprintf (&buf, _("%s: illegal option -- %c\n"), |
|
890 argv[0], c); |
|
891 #else |
|
892 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c); |
|
893 #endif |
|
894 } |
|
895 else |
|
896 { |
|
897 #if defined _LIBC && defined USE_IN_LIBIO |
|
898 __asprintf (&buf, _("%s: invalid option -- %c\n"), |
|
899 argv[0], c); |
|
900 #else |
|
901 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c); |
|
902 #endif |
|
903 } |
|
904 |
|
905 #if defined _LIBC && defined USE_IN_LIBIO |
|
906 if (_IO_fwide (stderr, 0) > 0) |
|
907 __fwprintf (stderr, L"%s", buf); |
|
908 else |
|
909 fputs (buf, stderr); |
|
910 |
|
911 free (buf); |
|
912 #endif |
|
913 } |
|
914 optopt = c; |
|
915 return '?'; |
|
916 } |
|
917 /* Convenience. Treat POSIX -W foo same as long option --foo */ |
|
918 if (temp[0] == 'W' && temp[1] == ';') |
|
919 { |
|
920 char *nameend; |
|
921 const struct option *p; |
|
922 const struct option *pfound = NULL; |
|
923 int exact = 0; |
|
924 int ambig = 0; |
|
925 int indfound = 0; |
|
926 int option_index; |
|
927 |
|
928 /* This is an option that requires an argument. */ |
|
929 if (*nextchar != '\0') |
|
930 { |
|
931 optarg = nextchar; |
|
932 /* If we end this ARGV-element by taking the rest as an arg, |
|
933 we must advance to the next element now. */ |
|
934 optind++; |
|
935 } |
|
936 else if (optind == argc) |
|
937 { |
|
938 if (print_errors) |
|
939 { |
|
940 /* 1003.2 specifies the format of this message. */ |
|
941 #if defined _LIBC && defined USE_IN_LIBIO |
|
942 char *buf; |
|
943 |
|
944 __asprintf (&buf, _("%s: option requires an argument -- %c\n"), |
|
945 argv[0], c); |
|
946 |
|
947 if (_IO_fwide (stderr, 0) > 0) |
|
948 __fwprintf (stderr, L"%s", buf); |
|
949 else |
|
950 fputs (buf, stderr); |
|
951 |
|
952 free (buf); |
|
953 #else |
|
954 fprintf (stderr, _("%s: option requires an argument -- %c\n"), |
|
955 argv[0], c); |
|
956 #endif |
|
957 } |
|
958 optopt = c; |
|
959 if (optstring[0] == ':') |
|
960 c = ':'; |
|
961 else |
|
962 c = '?'; |
|
963 return c; |
|
964 } |
|
965 else |
|
966 /* We already incremented `optind' once; |
|
967 increment it again when taking next ARGV-elt as argument. */ |
|
968 optarg = argv[optind++]; |
|
969 |
|
970 /* optarg is now the argument, see if it's in the |
|
971 table of longopts. */ |
|
972 |
|
973 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) |
|
974 /* Do nothing. */ ; |
|
975 |
|
976 /* Test all long options for either exact match |
|
977 or abbreviated matches. */ |
|
978 for (p = longopts, option_index = 0; p->name; p++, option_index++) |
|
979 if (!strncmp (p->name, nextchar, nameend - nextchar)) |
|
980 { |
|
981 if ((unsigned int) (nameend - nextchar) == strlen (p->name)) |
|
982 { |
|
983 /* Exact match found. */ |
|
984 pfound = p; |
|
985 indfound = option_index; |
|
986 exact = 1; |
|
987 break; |
|
988 } |
|
989 else if (pfound == NULL) |
|
990 { |
|
991 /* First nonexact match found. */ |
|
992 pfound = p; |
|
993 indfound = option_index; |
|
994 } |
|
995 else |
|
996 /* Second or later nonexact match found. */ |
|
997 ambig = 1; |
|
998 } |
|
999 if (ambig && !exact) |
|
1000 { |
|
1001 if (print_errors) |
|
1002 { |
|
1003 #if defined _LIBC && defined USE_IN_LIBIO |
|
1004 char *buf; |
|
1005 |
|
1006 __asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"), |
|
1007 argv[0], argv[optind]); |
|
1008 |
|
1009 if (_IO_fwide (stderr, 0) > 0) |
|
1010 __fwprintf (stderr, L"%s", buf); |
|
1011 else |
|
1012 fputs (buf, stderr); |
|
1013 |
|
1014 free (buf); |
|
1015 #else |
|
1016 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), |
|
1017 argv[0], argv[optind]); |
|
1018 #endif |
|
1019 } |
|
1020 nextchar += strlen (nextchar); |
|
1021 optind++; |
|
1022 return '?'; |
|
1023 } |
|
1024 if (pfound != NULL) |
|
1025 { |
|
1026 option_index = indfound; |
|
1027 if (*nameend) |
|
1028 { |
|
1029 /* Don't test has_arg with >, because some C compilers don't |
|
1030 allow it to be used on enums. */ |
|
1031 if (pfound->has_arg) |
|
1032 optarg = nameend + 1; |
|
1033 else |
|
1034 { |
|
1035 if (print_errors) |
|
1036 { |
|
1037 #if defined _LIBC && defined USE_IN_LIBIO |
|
1038 char *buf; |
|
1039 |
|
1040 __asprintf (&buf, _("\ |
|
1041 %s: option `-W %s' doesn't allow an argument\n"), |
|
1042 argv[0], pfound->name); |
|
1043 |
|
1044 if (_IO_fwide (stderr, 0) > 0) |
|
1045 __fwprintf (stderr, L"%s", buf); |
|
1046 else |
|
1047 fputs (buf, stderr); |
|
1048 |
|
1049 free (buf); |
|
1050 #else |
|
1051 fprintf (stderr, _("\ |
|
1052 %s: option `-W %s' doesn't allow an argument\n"), |
|
1053 argv[0], pfound->name); |
|
1054 #endif |
|
1055 } |
|
1056 |
|
1057 nextchar += strlen (nextchar); |
|
1058 return '?'; |
|
1059 } |
|
1060 } |
|
1061 else if (pfound->has_arg == 1) |
|
1062 { |
|
1063 if (optind < argc) |
|
1064 optarg = argv[optind++]; |
|
1065 else |
|
1066 { |
|
1067 if (print_errors) |
|
1068 { |
|
1069 #if defined _LIBC && defined USE_IN_LIBIO |
|
1070 char *buf; |
|
1071 |
|
1072 __asprintf (&buf, _("\ |
|
1073 %s: option `%s' requires an argument\n"), |
|
1074 argv[0], argv[optind - 1]); |
|
1075 |
|
1076 if (_IO_fwide (stderr, 0) > 0) |
|
1077 __fwprintf (stderr, L"%s", buf); |
|
1078 else |
|
1079 fputs (buf, stderr); |
|
1080 |
|
1081 free (buf); |
|
1082 #else |
|
1083 fprintf (stderr, |
|
1084 _("%s: option `%s' requires an argument\n"), |
|
1085 argv[0], argv[optind - 1]); |
|
1086 #endif |
|
1087 } |
|
1088 nextchar += strlen (nextchar); |
|
1089 return optstring[0] == ':' ? ':' : '?'; |
|
1090 } |
|
1091 } |
|
1092 nextchar += strlen (nextchar); |
|
1093 if (longind != NULL) |
|
1094 *longind = option_index; |
|
1095 if (pfound->flag) |
|
1096 { |
|
1097 *(pfound->flag) = pfound->val; |
|
1098 return 0; |
|
1099 } |
|
1100 return pfound->val; |
|
1101 } |
|
1102 nextchar = NULL; |
|
1103 return 'W'; /* Let the application handle it. */ |
|
1104 } |
|
1105 if (temp[1] == ':') |
|
1106 { |
|
1107 if (temp[2] == ':') |
|
1108 { |
|
1109 /* This is an option that accepts an argument optionally. */ |
|
1110 if (*nextchar != '\0') |
|
1111 { |
|
1112 optarg = nextchar; |
|
1113 optind++; |
|
1114 } |
|
1115 else |
|
1116 optarg = NULL; |
|
1117 nextchar = NULL; |
|
1118 } |
|
1119 else |
|
1120 { |
|
1121 /* This is an option that requires an argument. */ |
|
1122 if (*nextchar != '\0') |
|
1123 { |
|
1124 optarg = nextchar; |
|
1125 /* If we end this ARGV-element by taking the rest as an arg, |
|
1126 we must advance to the next element now. */ |
|
1127 optind++; |
|
1128 } |
|
1129 else if (optind == argc) |
|
1130 { |
|
1131 if (print_errors) |
|
1132 { |
|
1133 /* 1003.2 specifies the format of this message. */ |
|
1134 #if defined _LIBC && defined USE_IN_LIBIO |
|
1135 char *buf; |
|
1136 |
|
1137 __asprintf (&buf, |
|
1138 _("%s: option requires an argument -- %c\n"), |
|
1139 argv[0], c); |
|
1140 |
|
1141 if (_IO_fwide (stderr, 0) > 0) |
|
1142 __fwprintf (stderr, L"%s", buf); |
|
1143 else |
|
1144 fputs (buf, stderr); |
|
1145 |
|
1146 free (buf); |
|
1147 #else |
|
1148 fprintf (stderr, |
|
1149 _("%s: option requires an argument -- %c\n"), |
|
1150 argv[0], c); |
|
1151 #endif |
|
1152 } |
|
1153 optopt = c; |
|
1154 if (optstring[0] == ':') |
|
1155 c = ':'; |
|
1156 else |
|
1157 c = '?'; |
|
1158 } |
|
1159 else |
|
1160 /* We already incremented `optind' once; |
|
1161 increment it again when taking next ARGV-elt as argument. */ |
|
1162 optarg = argv[optind++]; |
|
1163 nextchar = NULL; |
|
1164 } |
|
1165 } |
|
1166 return c; |
|
1167 } |
|
1168 } |
|
1169 |
|
1170 int |
|
1171 getopt (argc, argv, optstring) |
|
1172 int argc; |
|
1173 char *const *argv; |
|
1174 const char *optstring; |
|
1175 { |
|
1176 return _getopt_internal (argc, argv, optstring, |
|
1177 (const struct option *) 0, |
|
1178 (int *) 0, |
|
1179 0); |
|
1180 } |
|
1181 |
|
1182 #endif /* Not ELIDE_CODE. */ |
|
1183 |
|
1184 |
|
1185 /* Compile with -DTEST to make an executable for use in testing |
|
1186 the above definition of `getopt'. */ |
|
1187 |
|
1188 /* #define TEST */ /* Pete Wilson mod 7/28/02 */ |
|
1189 #ifdef TEST |
|
1190 |
|
1191 #ifndef exit /* Pete Wilson mod 7/28/02 */ |
|
1192 int exit(int); /* Pete Wilson mod 7/28/02 */ |
|
1193 #endif /* Pete Wilson mod 7/28/02 */ |
|
1194 |
|
1195 int |
|
1196 main (argc, argv) |
|
1197 int argc; |
|
1198 char **argv; |
|
1199 { |
|
1200 int c; |
|
1201 int digit_optind = 0; |
|
1202 |
|
1203 while (1) |
|
1204 { |
|
1205 int this_option_optind = optind ? optind : 1; |
|
1206 |
|
1207 c = getopt (argc, argv, "abc:d:0123456789"); |
|
1208 if (c == -1) |
|
1209 break; |
|
1210 |
|
1211 switch (c) |
|
1212 { |
|
1213 case '0': |
|
1214 case '1': |
|
1215 case '2': |
|
1216 case '3': |
|
1217 case '4': |
|
1218 case '5': |
|
1219 case '6': |
|
1220 case '7': |
|
1221 case '8': |
|
1222 case '9': |
|
1223 if (digit_optind != 0 && digit_optind != this_option_optind) |
|
1224 printf ("digits occur in two different argv-elements.\n"); |
|
1225 digit_optind = this_option_optind; |
|
1226 printf ("option %c\n", c); |
|
1227 break; |
|
1228 |
|
1229 case 'a': |
|
1230 printf ("option a\n"); |
|
1231 break; |
|
1232 |
|
1233 case 'b': |
|
1234 printf ("option b\n"); |
|
1235 break; |
|
1236 |
|
1237 case 'c': |
|
1238 printf ("option c with value `%s'\n", optarg); |
|
1239 break; |
|
1240 |
|
1241 case '?': |
|
1242 break; |
|
1243 |
|
1244 default: |
|
1245 printf ("?? getopt returned character code 0%o ??\n", c); |
|
1246 } |
|
1247 } |
|
1248 |
|
1249 if (optind < argc) |
|
1250 { |
|
1251 printf ("non-option ARGV-elements: "); |
|
1252 while (optind < argc) |
|
1253 printf ("%s ", argv[optind++]); |
|
1254 printf ("\n"); |
|
1255 } |
|
1256 |
|
1257 exit (0); |
|
1258 } |
|
1259 |
|
1260 #endif /* TEST */ |