|
1268
|
1 /* Getopt for GNU. |
|
|
2 NOTE: getopt is now part of the C library, so if you don't know what |
|
|
3 "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu |
|
|
4 before changing it! |
|
|
5 |
|
|
6 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94 |
|
|
7 Free Software Foundation, Inc. |
|
|
8 |
|
|
9 This program is free software; you can redistribute it and/or modify it |
|
|
10 under the terms of the GNU General Public License as published by the |
|
|
11 Free Software Foundation; either version 2, or (at your option) any |
|
|
12 later version. |
|
|
13 |
|
|
14 This program is distributed in the hope that it will be useful, |
|
|
15 but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
|
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
|
17 GNU General Public License for more details. |
|
|
18 |
|
|
19 You should have received a copy of the GNU General Public License |
|
|
20 along with this program; if not, write to the Free Software |
|
1315
|
21 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
|
1268
|
22 |
|
|
23 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. |
|
|
24 Ditto for AIX 3.2 and <stdlib.h>. */ |
|
|
25 #ifndef _NO_PROTO |
|
|
26 #define _NO_PROTO |
|
|
27 #endif |
|
|
28 |
|
|
29 #ifdef HAVE_CONFIG_H |
|
|
30 #include <config.h> |
|
|
31 #endif |
|
|
32 |
|
|
33 #if !defined (__STDC__) || !__STDC__ |
|
|
34 /* This is a separate conditional since some stdc systems |
|
|
35 reject `defined (const)'. */ |
|
|
36 #ifndef const |
|
|
37 #define const |
|
|
38 #endif |
|
|
39 #endif |
|
|
40 |
|
|
41 #include <stdio.h> |
|
|
42 |
|
|
43 /* Comment out all this code if we are using the GNU C Library, and are not |
|
|
44 actually compiling the library itself. This code is part of the GNU C |
|
|
45 Library, but also included in many other GNU distributions. Compiling |
|
|
46 and linking in this code is a waste when using the GNU C library |
|
|
47 (especially if it is a shared library). Rather than having every GNU |
|
|
48 program understand `configure --with-gnu-libc' and omit the object files, |
|
|
49 it is simpler to just do this in the source for each such file. */ |
|
|
50 |
|
|
51 #if defined (_LIBC) || !defined (__GNU_LIBRARY__) |
|
|
52 |
|
|
53 |
|
|
54 /* This needs to come after some library #include |
|
|
55 to get __GNU_LIBRARY__ defined. */ |
|
|
56 #ifdef __GNU_LIBRARY__ |
|
|
57 /* Don't include stdlib.h for non-GNU C libraries because some of them |
|
|
58 contain conflicting prototypes for getopt. */ |
|
|
59 #include <stdlib.h> |
|
|
60 #endif /* GNU C library. */ |
|
|
61 |
|
|
62 /* This version of `getopt' appears to the caller like standard Unix `getopt' |
|
|
63 but it behaves differently for the user, since it allows the user |
|
|
64 to intersperse the options with the other arguments. |
|
|
65 |
|
|
66 As `getopt' works, it permutes the elements of ARGV so that, |
|
|
67 when it is done, all the options precede everything else. Thus |
|
|
68 all application programs are extended to handle flexible argument order. |
|
|
69 |
|
|
70 Setting the environment variable POSIXLY_CORRECT disables permutation. |
|
|
71 Then the behavior is completely standard. |
|
|
72 |
|
|
73 GNU application programs can use a third alternative mode in which |
|
|
74 they can distinguish the relative order of options and other arguments. */ |
|
|
75 |
|
|
76 #include "getopt.h" |
|
|
77 |
|
|
78 /* For communication from `getopt' to the caller. |
|
|
79 When `getopt' finds an option that takes an argument, |
|
|
80 the argument value is returned here. |
|
|
81 Also, when `ordering' is RETURN_IN_ORDER, |
|
|
82 each non-option ARGV-element is returned here. */ |
|
|
83 |
|
|
84 char *optarg = NULL; |
|
|
85 |
|
|
86 /* Index in ARGV of the next element to be scanned. |
|
|
87 This is used for communication to and from the caller |
|
|
88 and for communication between successive calls to `getopt'. |
|
|
89 |
|
|
90 On entry to `getopt', zero means this is the first call; initialize. |
|
|
91 |
|
|
92 When `getopt' returns EOF, this is the index of the first of the |
|
|
93 non-option elements that the caller should itself scan. |
|
|
94 |
|
|
95 Otherwise, `optind' communicates from one call to the next |
|
|
96 how much of ARGV has been scanned so far. */ |
|
|
97 |
|
|
98 /* XXX 1003.2 says this must be 1 before any call. */ |
|
|
99 int optind = 0; |
|
|
100 |
|
|
101 /* The next char to be scanned in the option-element |
|
|
102 in which the last option character we returned was found. |
|
|
103 This allows us to pick up the scan where we left off. |
|
|
104 |
|
|
105 If this is zero, or a null string, it means resume the scan |
|
|
106 by advancing to the next ARGV-element. */ |
|
|
107 |
|
|
108 static char *nextchar; |
|
|
109 |
|
|
110 /* Callers store zero here to inhibit the error message |
|
|
111 for unrecognized options. */ |
|
|
112 |
|
|
113 int opterr = 1; |
|
|
114 |
|
|
115 /* Set to an option character which was unrecognized. |
|
|
116 This must be initialized on some systems to avoid linking in the |
|
|
117 system's own getopt implementation. */ |
|
|
118 |
|
|
119 int optopt = '?'; |
|
|
120 |
|
|
121 /* Describe how to deal with options that follow non-option ARGV-elements. |
|
|
122 |
|
|
123 If the caller did not specify anything, |
|
|
124 the default is REQUIRE_ORDER if the environment variable |
|
|
125 POSIXLY_CORRECT is defined, PERMUTE otherwise. |
|
|
126 |
|
|
127 REQUIRE_ORDER means don't recognize them as options; |
|
|
128 stop option processing when the first non-option is seen. |
|
|
129 This is what Unix does. |
|
|
130 This mode of operation is selected by either setting the environment |
|
|
131 variable POSIXLY_CORRECT, or using `+' as the first character |
|
|
132 of the list of option characters. |
|
|
133 |
|
|
134 PERMUTE is the default. We permute the contents of ARGV as we scan, |
|
|
135 so that eventually all the non-options are at the end. This allows options |
|
|
136 to be given in any order, even with programs that were not written to |
|
|
137 expect this. |
|
|
138 |
|
|
139 RETURN_IN_ORDER is an option available to programs that were written |
|
|
140 to expect options and other ARGV-elements in any order and that care about |
|
|
141 the ordering of the two. We describe each non-option ARGV-element |
|
|
142 as if it were the argument of an option with character code 1. |
|
|
143 Using `-' as the first character of the list of option characters |
|
|
144 selects this mode of operation. |
|
|
145 |
|
|
146 The special argument `--' forces an end of option-scanning regardless |
|
|
147 of the value of `ordering'. In the case of RETURN_IN_ORDER, only |
|
|
148 `--' can cause `getopt' to return EOF with `optind' != ARGC. */ |
|
|
149 |
|
|
150 static enum |
|
|
151 { |
|
|
152 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
|
|
153 } ordering; |
|
|
154 |
|
|
155 /* Value of POSIXLY_CORRECT environment variable. */ |
|
|
156 static char *posixly_correct; |
|
|
157 |
|
|
158 #ifdef __GNU_LIBRARY__ |
|
|
159 /* We want to avoid inclusion of string.h with non-GNU libraries |
|
|
160 because there are many ways it can cause trouble. |
|
|
161 On some systems, it contains special magic macros that don't work |
|
|
162 in GCC. */ |
|
|
163 #include <string.h> |
|
|
164 #define my_index strchr |
|
|
165 #else |
|
|
166 |
|
|
167 /* Avoid depending on library functions or files |
|
|
168 whose names are inconsistent. */ |
|
|
169 |
|
|
170 char *getenv (); |
|
|
171 |
|
|
172 static char * |
|
|
173 my_index (str, chr) |
|
|
174 const char *str; |
|
|
175 int chr; |
|
|
176 { |
|
|
177 while (*str) |
|
|
178 { |
|
|
179 if (*str == chr) |
|
|
180 return (char *) str; |
|
|
181 str++; |
|
|
182 } |
|
|
183 return 0; |
|
|
184 } |
|
|
185 |
|
|
186 /* If using GCC, we can safely declare strlen this way. |
|
|
187 If not using GCC, it is ok not to declare it. */ |
|
|
188 #ifdef __GNUC__ |
|
|
189 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. |
|
|
190 That was relevant to code that was here before. */ |
|
|
191 #if !defined (__STDC__) || !__STDC__ |
|
|
192 /* gcc with -traditional declares the built-in strlen to return int, |
|
|
193 and has done so at least since version 2.4.5. -- rms. */ |
|
|
194 extern int strlen (const char *); |
|
|
195 #endif /* not __STDC__ */ |
|
|
196 #endif /* __GNUC__ */ |
|
|
197 |
|
|
198 #endif /* not __GNU_LIBRARY__ */ |
|
|
199 |
|
|
200 /* Handle permutation of arguments. */ |
|
|
201 |
|
|
202 /* Describe the part of ARGV that contains non-options that have |
|
|
203 been skipped. `first_nonopt' is the index in ARGV of the first of them; |
|
|
204 `last_nonopt' is the index after the last of them. */ |
|
|
205 |
|
|
206 static int first_nonopt; |
|
|
207 static int last_nonopt; |
|
|
208 |
|
|
209 /* Exchange two adjacent subsequences of ARGV. |
|
|
210 One subsequence is elements [first_nonopt,last_nonopt) |
|
|
211 which contains all the non-options that have been skipped so far. |
|
|
212 The other is elements [last_nonopt,optind), which contains all |
|
|
213 the options processed since those non-options were skipped. |
|
|
214 |
|
|
215 `first_nonopt' and `last_nonopt' are relocated so that they describe |
|
|
216 the new indices of the non-options in ARGV after they are moved. */ |
|
|
217 |
|
|
218 static void |
|
|
219 exchange (argv) |
|
|
220 char **argv; |
|
|
221 { |
|
|
222 int bottom = first_nonopt; |
|
|
223 int middle = last_nonopt; |
|
|
224 int top = optind; |
|
|
225 char *tem; |
|
|
226 |
|
|
227 /* Exchange the shorter segment with the far end of the longer segment. |
|
|
228 That puts the shorter segment into the right place. |
|
|
229 It leaves the longer segment in the right place overall, |
|
|
230 but it consists of two parts that need to be swapped next. */ |
|
|
231 |
|
|
232 while (top > middle && middle > bottom) |
|
|
233 { |
|
|
234 if (top - middle > middle - bottom) |
|
|
235 { |
|
|
236 /* Bottom segment is the short one. */ |
|
|
237 int len = middle - bottom; |
|
|
238 register int i; |
|
|
239 |
|
|
240 /* Swap it with the top part of the top segment. */ |
|
|
241 for (i = 0; i < len; i++) |
|
|
242 { |
|
|
243 tem = argv[bottom + i]; |
|
|
244 argv[bottom + i] = argv[top - (middle - bottom) + i]; |
|
|
245 argv[top - (middle - bottom) + i] = tem; |
|
|
246 } |
|
|
247 /* Exclude the moved bottom segment from further swapping. */ |
|
|
248 top -= len; |
|
|
249 } |
|
|
250 else |
|
|
251 { |
|
|
252 /* Top segment is the short one. */ |
|
|
253 int len = top - middle; |
|
|
254 register int i; |
|
|
255 |
|
|
256 /* Swap it with the bottom part of the bottom segment. */ |
|
|
257 for (i = 0; i < len; i++) |
|
|
258 { |
|
|
259 tem = argv[bottom + i]; |
|
|
260 argv[bottom + i] = argv[middle + i]; |
|
|
261 argv[middle + i] = tem; |
|
|
262 } |
|
|
263 /* Exclude the moved top segment from further swapping. */ |
|
|
264 bottom += len; |
|
|
265 } |
|
|
266 } |
|
|
267 |
|
|
268 /* Update records for the slots the non-options now occupy. */ |
|
|
269 |
|
|
270 first_nonopt += (optind - last_nonopt); |
|
|
271 last_nonopt = optind; |
|
|
272 } |
|
|
273 |
|
|
274 /* Initialize the internal data when the first call is made. */ |
|
|
275 |
|
|
276 static const char * |
|
|
277 _getopt_initialize (optstring) |
|
|
278 const char *optstring; |
|
|
279 { |
|
|
280 /* Start processing options with ARGV-element 1 (since ARGV-element 0 |
|
|
281 is the program name); the sequence of previously skipped |
|
|
282 non-option ARGV-elements is empty. */ |
|
|
283 |
|
|
284 first_nonopt = last_nonopt = optind = 1; |
|
|
285 |
|
|
286 nextchar = NULL; |
|
|
287 |
|
|
288 posixly_correct = getenv ("POSIXLY_CORRECT"); |
|
|
289 |
|
|
290 /* Determine how to handle the ordering of options and nonoptions. */ |
|
|
291 |
|
|
292 if (optstring[0] == '-') |
|
|
293 { |
|
|
294 ordering = RETURN_IN_ORDER; |
|
|
295 ++optstring; |
|
|
296 } |
|
|
297 else if (optstring[0] == '+') |
|
|
298 { |
|
|
299 ordering = REQUIRE_ORDER; |
|
|
300 ++optstring; |
|
|
301 } |
|
|
302 else if (posixly_correct != NULL) |
|
|
303 ordering = REQUIRE_ORDER; |
|
|
304 else |
|
|
305 ordering = PERMUTE; |
|
|
306 |
|
|
307 return optstring; |
|
|
308 } |
|
|
309 |
|
|
310 /* Scan elements of ARGV (whose length is ARGC) for option characters |
|
|
311 given in OPTSTRING. |
|
|
312 |
|
|
313 If an element of ARGV starts with '-', and is not exactly "-" or "--", |
|
|
314 then it is an option element. The characters of this element |
|
|
315 (aside from the initial '-') are option characters. If `getopt' |
|
|
316 is called repeatedly, it returns successively each of the option characters |
|
|
317 from each of the option elements. |
|
|
318 |
|
|
319 If `getopt' finds another option character, it returns that character, |
|
|
320 updating `optind' and `nextchar' so that the next call to `getopt' can |
|
|
321 resume the scan with the following option character or ARGV-element. |
|
|
322 |
|
|
323 If there are no more option characters, `getopt' returns `EOF'. |
|
|
324 Then `optind' is the index in ARGV of the first ARGV-element |
|
|
325 that is not an option. (The ARGV-elements have been permuted |
|
|
326 so that those that are not options now come last.) |
|
|
327 |
|
|
328 OPTSTRING is a string containing the legitimate option characters. |
|
|
329 If an option character is seen that is not listed in OPTSTRING, |
|
|
330 return '?' after printing an error message. If you set `opterr' to |
|
|
331 zero, the error message is suppressed but we still return '?'. |
|
|
332 |
|
|
333 If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
|
|
334 so the following text in the same ARGV-element, or the text of the following |
|
|
335 ARGV-element, is returned in `optarg'. Two colons mean an option that |
|
|
336 wants an optional arg; if there is text in the current ARGV-element, |
|
|
337 it is returned in `optarg', otherwise `optarg' is set to zero. |
|
|
338 |
|
|
339 If OPTSTRING starts with `-' or `+', it requests different methods of |
|
|
340 handling the non-option ARGV-elements. |
|
|
341 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
|
|
342 |
|
|
343 Long-named options begin with `--' instead of `-'. |
|
|
344 Their names may be abbreviated as long as the abbreviation is unique |
|
|
345 or is an exact match for some defined option. If they have an |
|
|
346 argument, it follows the option name in the same ARGV-element, separated |
|
|
347 from the option name by a `=', or else the in next ARGV-element. |
|
|
348 When `getopt' finds a long-named option, it returns 0 if that option's |
|
|
349 `flag' field is nonzero, the value of the option's `val' field |
|
|
350 if the `flag' field is zero. |
|
|
351 |
|
|
352 The elements of ARGV aren't really const, because we permute them. |
|
|
353 But we pretend they're const in the prototype to be compatible |
|
|
354 with other systems. |
|
|
355 |
|
|
356 LONGOPTS is a vector of `struct option' terminated by an |
|
|
357 element containing a name which is zero. |
|
|
358 |
|
|
359 LONGIND returns the index in LONGOPT of the long-named option found. |
|
|
360 It is only valid when a long-named option has been found by the most |
|
|
361 recent call. |
|
|
362 |
|
|
363 If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
|
|
364 long-named options. */ |
|
|
365 |
|
|
366 int |
|
|
367 _getopt_internal (argc, argv, optstring, longopts, longind, long_only) |
|
|
368 int argc; |
|
|
369 char *const *argv; |
|
|
370 const char *optstring; |
|
|
371 const struct option *longopts; |
|
|
372 int *longind; |
|
|
373 int long_only; |
|
|
374 { |
|
|
375 optarg = NULL; |
|
|
376 |
|
|
377 if (optind == 0) |
|
|
378 optstring = _getopt_initialize (optstring); |
|
|
379 |
|
|
380 if (nextchar == NULL || *nextchar == '\0') |
|
|
381 { |
|
|
382 /* Advance to the next ARGV-element. */ |
|
|
383 |
|
|
384 if (ordering == PERMUTE) |
|
|
385 { |
|
|
386 /* If we have just processed some options following some non-options, |
|
|
387 exchange them so that the options come first. */ |
|
|
388 |
|
|
389 if (first_nonopt != last_nonopt && last_nonopt != optind) |
|
|
390 exchange ((char **) argv); |
|
|
391 else if (last_nonopt != optind) |
|
|
392 first_nonopt = optind; |
|
|
393 |
|
|
394 /* Skip any additional non-options |
|
|
395 and extend the range of non-options previously skipped. */ |
|
|
396 |
|
|
397 while (optind < argc |
|
|
398 && (argv[optind][0] != '-' || argv[optind][1] == '\0')) |
|
|
399 optind++; |
|
|
400 last_nonopt = optind; |
|
|
401 } |
|
|
402 |
|
|
403 /* The special ARGV-element `--' means premature end of options. |
|
|
404 Skip it like a null option, |
|
|
405 then exchange with previous non-options as if it were an option, |
|
|
406 then skip everything else like a non-option. */ |
|
|
407 |
|
|
408 if (optind != argc && !strcmp (argv[optind], "--")) |
|
|
409 { |
|
|
410 optind++; |
|
|
411 |
|
|
412 if (first_nonopt != last_nonopt && last_nonopt != optind) |
|
|
413 exchange ((char **) argv); |
|
|
414 else if (first_nonopt == last_nonopt) |
|
|
415 first_nonopt = optind; |
|
|
416 last_nonopt = argc; |
|
|
417 |
|
|
418 optind = argc; |
|
|
419 } |
|
|
420 |
|
|
421 /* If we have done all the ARGV-elements, stop the scan |
|
|
422 and back over any non-options that we skipped and permuted. */ |
|
|
423 |
|
|
424 if (optind == argc) |
|
|
425 { |
|
|
426 /* Set the next-arg-index to point at the non-options |
|
|
427 that we previously skipped, so the caller will digest them. */ |
|
|
428 if (first_nonopt != last_nonopt) |
|
|
429 optind = first_nonopt; |
|
|
430 return EOF; |
|
|
431 } |
|
|
432 |
|
|
433 /* If we have come to a non-option and did not permute it, |
|
|
434 either stop the scan or describe it to the caller and pass it by. */ |
|
|
435 |
|
|
436 if ((argv[optind][0] != '-' || argv[optind][1] == '\0')) |
|
|
437 { |
|
|
438 if (ordering == REQUIRE_ORDER) |
|
|
439 return EOF; |
|
|
440 optarg = argv[optind++]; |
|
|
441 return 1; |
|
|
442 } |
|
|
443 |
|
|
444 /* We have found another option-ARGV-element. |
|
|
445 Skip the initial punctuation. */ |
|
|
446 |
|
|
447 nextchar = (argv[optind] + 1 |
|
|
448 + (longopts != NULL && argv[optind][1] == '-')); |
|
|
449 } |
|
|
450 |
|
|
451 /* Decode the current option-ARGV-element. */ |
|
|
452 |
|
|
453 /* Check whether the ARGV-element is a long option. |
|
|
454 |
|
|
455 If long_only and the ARGV-element has the form "-f", where f is |
|
|
456 a valid short option, don't consider it an abbreviated form of |
|
|
457 a long option that starts with f. Otherwise there would be no |
|
|
458 way to give the -f short option. |
|
|
459 |
|
|
460 On the other hand, if there's a long option "fubar" and |
|
|
461 the ARGV-element is "-fu", do consider that an abbreviation of |
|
|
462 the long option, just like "--fu", and not "-f" with arg "u". |
|
|
463 |
|
|
464 This distinction seems to be the most useful approach. */ |
|
|
465 |
|
|
466 if (longopts != NULL |
|
|
467 && (argv[optind][1] == '-' |
|
|
468 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) |
|
|
469 { |
|
|
470 char *nameend; |
|
|
471 const struct option *p; |
|
|
472 const struct option *pfound = NULL; |
|
|
473 int exact = 0; |
|
|
474 int ambig = 0; |
|
|
475 int indfound; |
|
|
476 int option_index; |
|
|
477 |
|
|
478 for (nameend = nextchar; *nameend && *nameend != '='; nameend++) |
|
|
479 /* Do nothing. */ ; |
|
|
480 |
|
|
481 /* Test all long options for either exact match |
|
|
482 or abbreviated matches. */ |
|
|
483 for (p = longopts, option_index = 0; p->name; p++, option_index++) |
|
|
484 if (!strncmp (p->name, nextchar, nameend - nextchar)) |
|
|
485 { |
|
|
486 if (nameend - nextchar == strlen (p->name)) |
|
|
487 { |
|
|
488 /* Exact match found. */ |
|
|
489 pfound = p; |
|
|
490 indfound = option_index; |
|
|
491 exact = 1; |
|
|
492 break; |
|
|
493 } |
|
|
494 else if (pfound == NULL) |
|
|
495 { |
|
|
496 /* First nonexact match found. */ |
|
|
497 pfound = p; |
|
|
498 indfound = option_index; |
|
|
499 } |
|
|
500 else |
|
|
501 /* Second or later nonexact match found. */ |
|
|
502 ambig = 1; |
|
|
503 } |
|
|
504 |
|
|
505 if (ambig && !exact) |
|
|
506 { |
|
|
507 if (opterr) |
|
|
508 fprintf (stderr, "%s: option `%s' is ambiguous\n", |
|
|
509 argv[0], argv[optind]); |
|
|
510 nextchar += strlen (nextchar); |
|
|
511 optind++; |
|
|
512 return '?'; |
|
|
513 } |
|
|
514 |
|
|
515 if (pfound != NULL) |
|
|
516 { |
|
|
517 option_index = indfound; |
|
|
518 optind++; |
|
|
519 if (*nameend) |
|
|
520 { |
|
|
521 /* Don't test has_arg with >, because some C compilers don't |
|
|
522 allow it to be used on enums. */ |
|
|
523 if (pfound->has_arg) |
|
|
524 optarg = nameend + 1; |
|
|
525 else |
|
|
526 { |
|
|
527 if (opterr) |
|
|
528 { |
|
|
529 if (argv[optind - 1][1] == '-') |
|
|
530 /* --option */ |
|
|
531 fprintf (stderr, |
|
|
532 "%s: option `--%s' doesn't allow an argument\n", |
|
|
533 argv[0], pfound->name); |
|
|
534 else |
|
|
535 /* +option or -option */ |
|
|
536 fprintf (stderr, |
|
|
537 "%s: option `%c%s' doesn't allow an argument\n", |
|
|
538 argv[0], argv[optind - 1][0], pfound->name); |
|
|
539 } |
|
|
540 nextchar += strlen (nextchar); |
|
|
541 return '?'; |
|
|
542 } |
|
|
543 } |
|
|
544 else if (pfound->has_arg == 1) |
|
|
545 { |
|
|
546 if (optind < argc) |
|
|
547 optarg = argv[optind++]; |
|
|
548 else |
|
|
549 { |
|
|
550 if (opterr) |
|
|
551 fprintf (stderr, "%s: option `%s' requires an argument\n", |
|
|
552 argv[0], argv[optind - 1]); |
|
|
553 nextchar += strlen (nextchar); |
|
|
554 return optstring[0] == ':' ? ':' : '?'; |
|
|
555 } |
|
|
556 } |
|
|
557 nextchar += strlen (nextchar); |
|
|
558 if (longind != NULL) |
|
|
559 *longind = option_index; |
|
|
560 if (pfound->flag) |
|
|
561 { |
|
|
562 *(pfound->flag) = pfound->val; |
|
|
563 return 0; |
|
|
564 } |
|
|
565 return pfound->val; |
|
|
566 } |
|
|
567 |
|
|
568 /* Can't find it as a long option. If this is not getopt_long_only, |
|
|
569 or the option starts with '--' or is not a valid short |
|
|
570 option, then it's an error. |
|
|
571 Otherwise interpret it as a short option. */ |
|
|
572 if (!long_only || argv[optind][1] == '-' |
|
|
573 || my_index (optstring, *nextchar) == NULL) |
|
|
574 { |
|
|
575 if (opterr) |
|
|
576 { |
|
|
577 if (argv[optind][1] == '-') |
|
|
578 /* --option */ |
|
|
579 fprintf (stderr, "%s: unrecognized option `--%s'\n", |
|
|
580 argv[0], nextchar); |
|
|
581 else |
|
|
582 /* +option or -option */ |
|
|
583 fprintf (stderr, "%s: unrecognized option `%c%s'\n", |
|
|
584 argv[0], argv[optind][0], nextchar); |
|
|
585 } |
|
|
586 nextchar = (char *) ""; |
|
|
587 optind++; |
|
|
588 return '?'; |
|
|
589 } |
|
|
590 } |
|
|
591 |
|
|
592 /* Look at and handle the next short option-character. */ |
|
|
593 |
|
|
594 { |
|
|
595 char c = *nextchar++; |
|
|
596 char *temp = my_index (optstring, c); |
|
|
597 |
|
|
598 /* Increment `optind' when we start to process its last character. */ |
|
|
599 if (*nextchar == '\0') |
|
|
600 ++optind; |
|
|
601 |
|
|
602 if (temp == NULL || c == ':') |
|
|
603 { |
|
|
604 if (opterr) |
|
|
605 { |
|
|
606 if (posixly_correct) |
|
|
607 /* 1003.2 specifies the format of this message. */ |
|
|
608 fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c); |
|
|
609 else |
|
|
610 fprintf (stderr, "%s: invalid option -- %c\n", argv[0], c); |
|
|
611 } |
|
|
612 optopt = c; |
|
|
613 return '?'; |
|
|
614 } |
|
|
615 if (temp[1] == ':') |
|
|
616 { |
|
|
617 if (temp[2] == ':') |
|
|
618 { |
|
|
619 /* This is an option that accepts an argument optionally. */ |
|
|
620 if (*nextchar != '\0') |
|
|
621 { |
|
|
622 optarg = nextchar; |
|
|
623 optind++; |
|
|
624 } |
|
|
625 else |
|
|
626 optarg = NULL; |
|
|
627 nextchar = NULL; |
|
|
628 } |
|
|
629 else |
|
|
630 { |
|
|
631 /* This is an option that requires an argument. */ |
|
|
632 if (*nextchar != '\0') |
|
|
633 { |
|
|
634 optarg = nextchar; |
|
|
635 /* If we end this ARGV-element by taking the rest as an arg, |
|
|
636 we must advance to the next element now. */ |
|
|
637 optind++; |
|
|
638 } |
|
|
639 else if (optind == argc) |
|
|
640 { |
|
|
641 if (opterr) |
|
|
642 { |
|
|
643 /* 1003.2 specifies the format of this message. */ |
|
|
644 fprintf (stderr, "%s: option requires an argument -- %c\n", |
|
|
645 argv[0], c); |
|
|
646 } |
|
|
647 optopt = c; |
|
|
648 if (optstring[0] == ':') |
|
|
649 c = ':'; |
|
|
650 else |
|
|
651 c = '?'; |
|
|
652 } |
|
|
653 else |
|
|
654 /* We already incremented `optind' once; |
|
|
655 increment it again when taking next ARGV-elt as argument. */ |
|
|
656 optarg = argv[optind++]; |
|
|
657 nextchar = NULL; |
|
|
658 } |
|
|
659 } |
|
|
660 return c; |
|
|
661 } |
|
|
662 } |
|
|
663 |
|
|
664 int |
|
|
665 getopt (argc, argv, optstring) |
|
|
666 int argc; |
|
|
667 char *const *argv; |
|
|
668 const char *optstring; |
|
|
669 { |
|
|
670 return _getopt_internal (argc, argv, optstring, |
|
|
671 (const struct option *) 0, |
|
|
672 (int *) 0, |
|
|
673 0); |
|
|
674 } |
|
|
675 |
|
|
676 #endif /* _LIBC or not __GNU_LIBRARY__. */ |
|
|
677 |
|
|
678 #ifdef TEST |
|
|
679 |
|
|
680 /* Compile with -DTEST to make an executable for use in testing |
|
|
681 the above definition of `getopt'. */ |
|
|
682 |
|
|
683 int |
|
|
684 main (argc, argv) |
|
|
685 int argc; |
|
|
686 char **argv; |
|
|
687 { |
|
|
688 int c; |
|
|
689 int digit_optind = 0; |
|
|
690 |
|
|
691 while (1) |
|
|
692 { |
|
|
693 int this_option_optind = optind ? optind : 1; |
|
|
694 |
|
|
695 c = getopt (argc, argv, "abc:d:0123456789"); |
|
|
696 if (c == EOF) |
|
|
697 break; |
|
|
698 |
|
|
699 switch (c) |
|
|
700 { |
|
|
701 case '0': |
|
|
702 case '1': |
|
|
703 case '2': |
|
|
704 case '3': |
|
|
705 case '4': |
|
|
706 case '5': |
|
|
707 case '6': |
|
|
708 case '7': |
|
|
709 case '8': |
|
|
710 case '9': |
|
|
711 if (digit_optind != 0 && digit_optind != this_option_optind) |
|
|
712 printf ("digits occur in two different argv-elements.\n"); |
|
|
713 digit_optind = this_option_optind; |
|
|
714 printf ("option %c\n", c); |
|
|
715 break; |
|
|
716 |
|
|
717 case 'a': |
|
|
718 printf ("option a\n"); |
|
|
719 break; |
|
|
720 |
|
|
721 case 'b': |
|
|
722 printf ("option b\n"); |
|
|
723 break; |
|
|
724 |
|
|
725 case 'c': |
|
|
726 printf ("option c with value `%s'\n", optarg); |
|
|
727 break; |
|
|
728 |
|
|
729 case '?': |
|
|
730 break; |
|
|
731 |
|
|
732 default: |
|
|
733 printf ("?? getopt returned character code 0%o ??\n", c); |
|
|
734 } |
|
|
735 } |
|
|
736 |
|
|
737 if (optind < argc) |
|
|
738 { |
|
|
739 printf ("non-option ARGV-elements: "); |
|
|
740 while (optind < argc) |
|
|
741 printf ("%s ", argv[optind++]); |
|
|
742 printf ("\n"); |
|
|
743 } |
|
|
744 |
|
|
745 exit (0); |
|
|
746 } |
|
|
747 |
|
|
748 #endif /* TEST */ |
