Mercurial > octave-nkf
annotate liboctave/getopt.c @ 8710:739141cde75a ss-3-1-52
fix typo in Array-f.cc
author | Jaroslav Hajek <highegg@gmail.com> |
---|---|
date | Mon, 09 Feb 2009 21:51:31 +0100 |
parents | cf59d542f33e |
children |
rev | line source |
---|---|
4378 | 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.org | |
4 before changing it! | |
5 | |
6 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97 | |
7 Free Software Foundation, Inc. | |
8 | |
9 This file is part of the GNU C Library. Its master source is NOT part of | |
10 the C library, however. The master source lives in /gd/gnu/lib. | |
11 | |
12 The GNU C Library is free software; you can redistribute it and/or | |
13 modify it under the terms of the GNU Library General Public License as | |
14 published by the Free Software Foundation; either version 2 of the | |
15 License, or (at your option) any later version. | |
16 | |
17 The GNU C Library 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 GNU | |
20 Library General Public License for more details. | |
21 | |
22 You should have received a copy of the GNU Library General Public | |
5307 | 23 License along with the GNU C Library; see the file COPYING.LIB. If |
24 not, write to the Free Software Foundation, Inc., 51 Franklin | |
25 Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
4378 | 26 |
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 | |
33 #ifdef HAVE_CONFIG_H | |
34 #include <config.h> | |
35 #endif | |
36 | |
37 #if !defined (__STDC__) || !__STDC__ | |
38 /* This is a separate conditional since some stdc systems | |
39 reject `defined (const)'. */ | |
40 #ifndef const | |
41 #define const | |
42 #endif | |
43 #endif | |
44 | |
45 #include <stdio.h> | |
46 | |
47 /* Comment out all this code if we are using the GNU C Library, and are not | |
48 actually compiling the library itself. This code is part of the GNU C | |
49 Library, but also included in many other GNU distributions. Compiling | |
50 and linking in this code is a waste when using the GNU C library | |
51 (especially if it is a shared library). Rather than having every GNU | |
52 program understand `configure --with-gnu-libc' and omit the object files, | |
53 it is simpler to just do this in the source for each such file. */ | |
54 | |
55 #define GETOPT_INTERFACE_VERSION 2 | |
56 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 | |
57 #include <gnu-versions.h> | |
58 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION | |
59 #define ELIDE_CODE | |
60 #endif | |
61 #endif | |
62 | |
63 #ifndef ELIDE_CODE | |
64 | |
65 | |
66 /* This needs to come after some library #include | |
67 to get __GNU_LIBRARY__ defined. */ | |
68 #ifdef __GNU_LIBRARY__ | |
69 /* Don't include stdlib.h for non-GNU C libraries because some of them | |
70 contain conflicting prototypes for getopt. */ | |
71 #include <stdlib.h> | |
72 #include <unistd.h> | |
73 #endif /* GNU C library. */ | |
74 | |
75 #ifdef VMS | |
76 #include <unixlib.h> | |
77 #if HAVE_STRING_H - 0 | |
78 #include <string.h> | |
79 #endif | |
80 #endif | |
81 | |
5621 | 82 #if defined (WIN32) && !defined (__CYGWIN__) |
4378 | 83 /* It's not Unix, really. See? Capital letters. */ |
84 #include <stdlib.h> | |
85 #include <windows.h> | |
86 #define getpid() GetCurrentProcessId() | |
87 #endif | |
88 | |
89 #ifndef _ | |
90 /* This is for other GNU distributions with internationalized messages. | |
91 When compiling libc, the _ macro is predefined. */ | |
92 #ifdef HAVE_LIBINTL_H | |
93 # include <libintl.h> | |
94 # define _(msgid) gettext (msgid) | |
95 #else | |
96 # define _(msgid) (msgid) | |
97 #endif | |
98 #endif | |
99 | |
100 /* This version of `getopt' appears to the caller like standard Unix `getopt' | |
101 but it behaves differently for the user, since it allows the user | |
102 to intersperse the options with the other arguments. | |
103 | |
104 As `getopt' works, it permutes the elements of ARGV so that, | |
105 when it is done, all the options precede everything else. Thus | |
106 all application programs are extended to handle flexible argument order. | |
107 | |
108 Setting the environment variable POSIXLY_CORRECT disables permutation. | |
109 Then the behavior is completely standard. | |
110 | |
111 GNU application programs can use a third alternative mode in which | |
112 they can distinguish the relative order of options and other arguments. */ | |
113 | |
114 #include "getopt.h" | |
115 | |
116 /* For communication from `getopt' to the caller. | |
117 When `getopt' finds an option that takes an argument, | |
118 the argument value is returned here. | |
119 Also, when `ordering' is RETURN_IN_ORDER, | |
120 each non-option ARGV-element is returned here. */ | |
121 | |
122 char *optarg = NULL; | |
123 | |
124 /* Index in ARGV of the next element to be scanned. | |
125 This is used for communication to and from the caller | |
126 and for communication between successive calls to `getopt'. | |
127 | |
128 On entry to `getopt', zero means this is the first call; initialize. | |
129 | |
130 When `getopt' returns -1, this is the index of the first of the | |
131 non-option elements that the caller should itself scan. | |
132 | |
133 Otherwise, `optind' communicates from one call to the next | |
134 how much of ARGV has been scanned so far. */ | |
135 | |
136 /* 1003.2 says this must be 1 before any call. */ | |
137 int optind = 1; | |
138 | |
139 /* Formerly, initialization of getopt depended on optind==0, which | |
140 causes problems with re-calling getopt as programs generally don't | |
141 know that. */ | |
142 | |
143 int __getopt_initialized = 0; | |
144 | |
145 /* The next char to be scanned in the option-element | |
146 in which the last option character we returned was found. | |
147 This allows us to pick up the scan where we left off. | |
148 | |
149 If this is zero, or a null string, it means resume the scan | |
150 by advancing to the next ARGV-element. */ | |
151 | |
152 static char *nextchar; | |
153 | |
154 /* Callers store zero here to inhibit the error message | |
155 for unrecognized options. */ | |
156 | |
157 int opterr = 1; | |
158 | |
159 /* Set to an option character which was unrecognized. | |
160 This must be initialized on some systems to avoid linking in the | |
161 system's own getopt implementation. */ | |
162 | |
163 int optopt = '?'; | |
164 | |
165 /* Describe how to deal with options that follow non-option ARGV-elements. | |
166 | |
167 If the caller did not specify anything, | |
168 the default is REQUIRE_ORDER if the environment variable | |
169 POSIXLY_CORRECT is defined, PERMUTE otherwise. | |
170 | |
171 REQUIRE_ORDER means don't recognize them as options; | |
172 stop option processing when the first non-option is seen. | |
173 This is what Unix does. | |
174 This mode of operation is selected by either setting the environment | |
175 variable POSIXLY_CORRECT, or using `+' as the first character | |
176 of the list of option characters. | |
177 | |
178 PERMUTE is the default. We permute the contents of ARGV as we scan, | |
179 so that eventually all the non-options are at the end. This allows options | |
180 to be given in any order, even with programs that were not written to | |
181 expect this. | |
182 | |
183 RETURN_IN_ORDER is an option available to programs that were written | |
184 to expect options and other ARGV-elements in any order and that care about | |
185 the ordering of the two. We describe each non-option ARGV-element | |
186 as if it were the argument of an option with character code 1. | |
187 Using `-' as the first character of the list of option characters | |
188 selects this mode of operation. | |
189 | |
190 The special argument `--' forces an end of option-scanning regardless | |
191 of the value of `ordering'. In the case of RETURN_IN_ORDER, only | |
192 `--' can cause `getopt' to return -1 with `optind' != ARGC. */ | |
193 | |
194 static enum | |
195 { | |
196 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER | |
197 } ordering; | |
198 | |
199 /* Value of POSIXLY_CORRECT environment variable. */ | |
200 static char *posixly_correct; | |
201 | |
202 #if defined(__GNU_LIBRARY__) || defined(WIN32) | |
203 /* We want to avoid inclusion of string.h with non-GNU libraries | |
204 because there are many ways it can cause trouble. | |
205 On some systems, it contains special magic macros that don't work | |
206 in GCC. */ | |
207 #include <string.h> | |
208 #define my_index strchr | |
209 #else | |
210 | |
211 /* Avoid depending on library functions or files | |
212 whose names are inconsistent. */ | |
213 | |
214 char *getenv (); | |
215 | |
216 static char * | |
217 my_index (str, chr) | |
218 const char *str; | |
219 int chr; | |
220 { | |
221 while (*str) | |
222 { | |
223 if (*str == chr) | |
224 return (char *) str; | |
225 str++; | |
226 } | |
227 return 0; | |
228 } | |
229 | |
230 /* If using GCC, we can safely declare strlen this way. | |
231 If not using GCC, it is ok not to declare it. */ | |
232 #ifdef __GNUC__ | |
233 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | |
234 That was relevant to code that was here before. */ | |
235 #if !defined (__STDC__) || !__STDC__ | |
236 /* gcc with -traditional declares the built-in strlen to return int, | |
237 and has done so at least since version 2.4.5. -- rms. */ | |
238 extern int strlen (const char *); | |
239 #endif /* not __STDC__ */ | |
240 #endif /* __GNUC__ */ | |
241 | |
242 #endif /* not __GNU_LIBRARY__ */ | |
243 | |
244 /* Handle permutation of arguments. */ | |
245 | |
246 /* Describe the part of ARGV that contains non-options that have | |
247 been skipped. `first_nonopt' is the index in ARGV of the first of them; | |
248 `last_nonopt' is the index after the last of them. */ | |
249 | |
250 static int first_nonopt; | |
251 static int last_nonopt; | |
252 | |
253 #ifdef _LIBC | |
254 /* Bash 2.0 gives us an environment variable containing flags | |
255 indicating ARGV elements that should not be considered arguments. */ | |
256 | |
257 static const char *nonoption_flags; | |
258 static int nonoption_flags_len; | |
259 | |
260 static int original_argc; | |
261 static char *const *original_argv; | |
262 | |
263 /* Make sure the environment variable bash 2.0 puts in the environment | |
264 is valid for the getopt call we must make sure that the ARGV passed | |
265 to getopt is that one passed to the process. */ | |
266 static void store_args (int argc, char *const *argv) __attribute__ ((unused)); | |
267 static void | |
268 store_args (int argc, char *const *argv) | |
269 { | |
8202
cf59d542f33e
replace all TODOs and XXXs with FIXMEs
Jaroslav Hajek <highegg@gmail.com>
parents:
5621
diff
changeset
|
270 /* FIXME: This is no good solution. We should rather copy the args so |
4378 | 271 that we can compare them later. But we must not use malloc(3). */ |
272 original_argc = argc; | |
273 original_argv = argv; | |
274 } | |
275 text_set_element (__libc_subinit, store_args); | |
276 #endif | |
277 | |
278 /* Exchange two adjacent subsequences of ARGV. | |
279 One subsequence is elements [first_nonopt,last_nonopt) | |
280 which contains all the non-options that have been skipped so far. | |
281 The other is elements [last_nonopt,optind), which contains all | |
282 the options processed since those non-options were skipped. | |
283 | |
284 `first_nonopt' and `last_nonopt' are relocated so that they describe | |
285 the new indices of the non-options in ARGV after they are moved. */ | |
286 | |
287 #if defined (__STDC__) && __STDC__ | |
288 static void exchange (char **); | |
289 #endif | |
290 | |
291 static void | |
292 exchange (argv) | |
293 char **argv; | |
294 { | |
295 int bottom = first_nonopt; | |
296 int middle = last_nonopt; | |
297 int top = optind; | |
298 char *tem; | |
299 | |
300 /* Exchange the shorter segment with the far end of the longer segment. | |
301 That puts the shorter segment into the right place. | |
302 It leaves the longer segment in the right place overall, | |
303 but it consists of two parts that need to be swapped next. */ | |
304 | |
305 while (top > middle && middle > bottom) | |
306 { | |
307 if (top - middle > middle - bottom) | |
308 { | |
309 /* Bottom segment is the short one. */ | |
310 int len = middle - bottom; | |
311 register int i; | |
312 | |
313 /* Swap it with the top part of the top segment. */ | |
314 for (i = 0; i < len; i++) | |
315 { | |
316 tem = argv[bottom + i]; | |
317 argv[bottom + i] = argv[top - (middle - bottom) + i]; | |
318 argv[top - (middle - bottom) + i] = tem; | |
319 } | |
320 /* Exclude the moved bottom segment from further swapping. */ | |
321 top -= len; | |
322 } | |
323 else | |
324 { | |
325 /* Top segment is the short one. */ | |
326 int len = top - middle; | |
327 register int i; | |
328 | |
329 /* Swap it with the bottom part of the bottom segment. */ | |
330 for (i = 0; i < len; i++) | |
331 { | |
332 tem = argv[bottom + i]; | |
333 argv[bottom + i] = argv[middle + i]; | |
334 argv[middle + i] = tem; | |
335 } | |
336 /* Exclude the moved top segment from further swapping. */ | |
337 bottom += len; | |
338 } | |
339 } | |
340 | |
341 /* Update records for the slots the non-options now occupy. */ | |
342 | |
343 first_nonopt += (optind - last_nonopt); | |
344 last_nonopt = optind; | |
345 } | |
346 | |
347 /* Initialize the internal data when the first call is made. */ | |
348 | |
349 #if defined (__STDC__) && __STDC__ | |
350 static const char *_getopt_initialize (int, char *const *, const char *); | |
351 #endif | |
352 static const char * | |
353 _getopt_initialize (argc, argv, optstring) | |
354 int argc; | |
355 char *const *argv; | |
356 const char *optstring; | |
357 { | |
358 /* Start processing options with ARGV-element 1 (since ARGV-element 0 | |
359 is the program name); the sequence of previously skipped | |
360 non-option ARGV-elements is empty. */ | |
361 | |
362 first_nonopt = last_nonopt = optind = 1; | |
363 | |
364 nextchar = NULL; | |
365 | |
366 posixly_correct = getenv ("POSIXLY_CORRECT"); | |
367 | |
368 /* Determine how to handle the ordering of options and nonoptions. */ | |
369 | |
370 if (optstring[0] == '-') | |
371 { | |
372 ordering = RETURN_IN_ORDER; | |
373 ++optstring; | |
374 } | |
375 else if (optstring[0] == '+') | |
376 { | |
377 ordering = REQUIRE_ORDER; | |
378 ++optstring; | |
379 } | |
380 else if (posixly_correct != NULL) | |
381 ordering = REQUIRE_ORDER; | |
382 else | |
383 ordering = PERMUTE; | |
384 | |
385 #ifdef _LIBC | |
386 if (posixly_correct == NULL | |
387 && argc == original_argc && argv == original_argv) | |
388 { | |
389 /* Bash 2.0 puts a special variable in the environment for each | |
390 command it runs, specifying which ARGV elements are the results of | |
391 file name wildcard expansion and therefore should not be | |
392 considered as options. */ | |
393 char var[100]; | |
394 sprintf (var, "_%d_GNU_nonoption_argv_flags_", getpid ()); | |
395 nonoption_flags = getenv (var); | |
396 if (nonoption_flags == NULL) | |
397 nonoption_flags_len = 0; | |
398 else | |
399 nonoption_flags_len = strlen (nonoption_flags); | |
400 } | |
401 else | |
402 nonoption_flags_len = 0; | |
403 #endif | |
404 | |
405 return optstring; | |
406 } | |
407 | |
408 /* Scan elements of ARGV (whose length is ARGC) for option characters | |
409 given in OPTSTRING. | |
410 | |
411 If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
412 then it is an option element. The characters of this element | |
413 (aside from the initial '-') are option characters. If `getopt' | |
414 is called repeatedly, it returns successively each of the option characters | |
415 from each of the option elements. | |
416 | |
417 If `getopt' finds another option character, it returns that character, | |
418 updating `optind' and `nextchar' so that the next call to `getopt' can | |
419 resume the scan with the following option character or ARGV-element. | |
420 | |
421 If there are no more option characters, `getopt' returns -1. | |
422 Then `optind' is the index in ARGV of the first ARGV-element | |
423 that is not an option. (The ARGV-elements have been permuted | |
424 so that those that are not options now come last.) | |
425 | |
426 OPTSTRING is a string containing the legitimate option characters. | |
427 If an option character is seen that is not listed in OPTSTRING, | |
428 return '?' after printing an error message. If you set `opterr' to | |
429 zero, the error message is suppressed but we still return '?'. | |
430 | |
431 If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
432 so the following text in the same ARGV-element, or the text of the following | |
433 ARGV-element, is returned in `optarg'. Two colons mean an option that | |
434 wants an optional arg; if there is text in the current ARGV-element, | |
435 it is returned in `optarg', otherwise `optarg' is set to zero. | |
436 | |
437 If OPTSTRING starts with `-' or `+', it requests different methods of | |
438 handling the non-option ARGV-elements. | |
439 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
440 | |
441 Long-named options begin with `--' instead of `-'. | |
442 Their names may be abbreviated as long as the abbreviation is unique | |
443 or is an exact match for some defined option. If they have an | |
444 argument, it follows the option name in the same ARGV-element, separated | |
445 from the option name by a `=', or else the in next ARGV-element. | |
446 When `getopt' finds a long-named option, it returns 0 if that option's | |
447 `flag' field is nonzero, the value of the option's `val' field | |
448 if the `flag' field is zero. | |
449 | |
450 The elements of ARGV aren't really const, because we permute them. | |
451 But we pretend they're const in the prototype to be compatible | |
452 with other systems. | |
453 | |
454 LONGOPTS is a vector of `struct option' terminated by an | |
455 element containing a name which is zero. | |
456 | |
457 LONGIND returns the index in LONGOPT of the long-named option found. | |
458 It is only valid when a long-named option has been found by the most | |
459 recent call. | |
460 | |
461 If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
462 long-named options. */ | |
463 | |
464 int | |
465 _getopt_internal (argc, argv, optstring, longopts, longind, long_only) | |
466 int argc; | |
467 char *const *argv; | |
468 const char *optstring; | |
469 const struct option *longopts; | |
470 int *longind; | |
471 int long_only; | |
472 { | |
473 optarg = NULL; | |
474 | |
475 if (!__getopt_initialized || optind == 0) | |
476 { | |
477 optstring = _getopt_initialize (argc, argv, optstring); | |
478 optind = 1; /* Don't scan ARGV[0], the program name. */ | |
479 __getopt_initialized = 1; | |
480 } | |
481 | |
482 /* Test whether ARGV[optind] points to a non-option argument. | |
483 Either it does not have option syntax, or there is an environment flag | |
484 from the shell indicating it is not an option. The later information | |
485 is only used when the used in the GNU libc. */ | |
486 #ifdef _LIBC | |
487 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ | |
488 || (optind < nonoption_flags_len \ | |
489 && nonoption_flags[optind] == '1')) | |
490 #else | |
491 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') | |
492 #endif | |
493 | |
494 if (nextchar == NULL || *nextchar == '\0') | |
495 { | |
496 /* Advance to the next ARGV-element. */ | |
497 | |
498 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been | |
499 moved back by the user (who may also have changed the arguments). */ | |
500 if (last_nonopt > optind) | |
501 last_nonopt = optind; | |
502 if (first_nonopt > optind) | |
503 first_nonopt = optind; | |
504 | |
505 if (ordering == PERMUTE) | |
506 { | |
507 /* If we have just processed some options following some non-options, | |
508 exchange them so that the options come first. */ | |
509 | |
510 if (first_nonopt != last_nonopt && last_nonopt != optind) | |
511 exchange ((char **) argv); | |
512 else if (last_nonopt != optind) | |
513 first_nonopt = optind; | |
514 | |
515 /* Skip any additional non-options | |
516 and extend the range of non-options previously skipped. */ | |
517 | |
518 while (optind < argc && NONOPTION_P) | |
519 optind++; | |
520 last_nonopt = optind; | |
521 } | |
522 | |
523 /* The special ARGV-element `--' means premature end of options. | |
524 Skip it like a null option, | |
525 then exchange with previous non-options as if it were an option, | |
526 then skip everything else like a non-option. */ | |
527 | |
528 if (optind != argc && !strcmp (argv[optind], "--")) | |
529 { | |
530 optind++; | |
531 | |
532 if (first_nonopt != last_nonopt && last_nonopt != optind) | |
533 exchange ((char **) argv); | |
534 else if (first_nonopt == last_nonopt) | |
535 first_nonopt = optind; | |
536 last_nonopt = argc; | |
537 | |
538 optind = argc; | |
539 } | |
540 | |
541 /* If we have done all the ARGV-elements, stop the scan | |
542 and back over any non-options that we skipped and permuted. */ | |
543 | |
544 if (optind == argc) | |
545 { | |
546 /* Set the next-arg-index to point at the non-options | |
547 that we previously skipped, so the caller will digest them. */ | |
548 if (first_nonopt != last_nonopt) | |
549 optind = first_nonopt; | |
550 return -1; | |
551 } | |
552 | |
553 /* If we have come to a non-option and did not permute it, | |
554 either stop the scan or describe it to the caller and pass it by. */ | |
555 | |
556 if (NONOPTION_P) | |
557 { | |
558 if (ordering == REQUIRE_ORDER) | |
559 return -1; | |
560 optarg = argv[optind++]; | |
561 return 1; | |
562 } | |
563 | |
564 /* We have found another option-ARGV-element. | |
565 Skip the initial punctuation. */ | |
566 | |
567 nextchar = (argv[optind] + 1 | |
568 + (longopts != NULL && argv[optind][1] == '-')); | |
569 } | |
570 | |
571 /* Decode the current option-ARGV-element. */ | |
572 | |
573 /* Check whether the ARGV-element is a long option. | |
574 | |
575 If long_only and the ARGV-element has the form "-f", where f is | |
576 a valid short option, don't consider it an abbreviated form of | |
577 a long option that starts with f. Otherwise there would be no | |
578 way to give the -f short option. | |
579 | |
580 On the other hand, if there's a long option "fubar" and | |
581 the ARGV-element is "-fu", do consider that an abbreviation of | |
582 the long option, just like "--fu", and not "-f" with arg "u". | |
583 | |
584 This distinction seems to be the most useful approach. */ | |
585 | |
586 if (longopts != NULL | |
587 && (argv[optind][1] == '-' | |
588 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) | |
589 { | |
590 char *nameend; | |
591 const struct option *p; | |
592 const struct option *pfound = NULL; | |
593 int exact = 0; | |
594 int ambig = 0; | |
595 int indfound = -1; | |
596 int option_index; | |
597 | |
598 for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | |
599 /* Do nothing. */ ; | |
600 | |
601 /* Test all long options for either exact match | |
602 or abbreviated matches. */ | |
603 for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
604 if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
605 { | |
606 if ((unsigned int) (nameend - nextchar) | |
607 == (unsigned int) strlen (p->name)) | |
608 { | |
609 /* Exact match found. */ | |
610 pfound = p; | |
611 indfound = option_index; | |
612 exact = 1; | |
613 break; | |
614 } | |
615 else if (pfound == NULL) | |
616 { | |
617 /* First nonexact match found. */ | |
618 pfound = p; | |
619 indfound = option_index; | |
620 } | |
621 else | |
622 /* Second or later nonexact match found. */ | |
623 ambig = 1; | |
624 } | |
625 | |
626 if (ambig && !exact) | |
627 { | |
628 if (opterr) | |
629 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), | |
630 argv[0], argv[optind]); | |
631 nextchar += strlen (nextchar); | |
632 optind++; | |
633 optopt = 0; | |
634 return '?'; | |
635 } | |
636 | |
637 if (pfound != NULL) | |
638 { | |
639 option_index = indfound; | |
640 optind++; | |
641 if (*nameend) | |
642 { | |
643 /* Don't test has_arg with >, because some C compilers don't | |
644 allow it to be used on enums. */ | |
645 if (pfound->has_arg) | |
646 optarg = nameend + 1; | |
647 else | |
648 { | |
649 if (opterr) | |
650 if (argv[optind - 1][1] == '-') | |
651 /* --option */ | |
652 fprintf (stderr, | |
653 _("%s: option `--%s' doesn't allow an argument\n"), | |
654 argv[0], pfound->name); | |
655 else | |
656 /* +option or -option */ | |
657 fprintf (stderr, | |
658 _("%s: option `%c%s' doesn't allow an argument\n"), | |
659 argv[0], argv[optind - 1][0], pfound->name); | |
660 | |
661 nextchar += strlen (nextchar); | |
662 | |
663 optopt = pfound->val; | |
664 return '?'; | |
665 } | |
666 } | |
667 else if (pfound->has_arg == 1) | |
668 { | |
669 if (optind < argc) | |
670 optarg = argv[optind++]; | |
671 else | |
672 { | |
673 if (opterr) | |
674 fprintf (stderr, | |
675 _("%s: option `%s' requires an argument\n"), | |
676 argv[0], argv[optind - 1]); | |
677 nextchar += strlen (nextchar); | |
678 optopt = pfound->val; | |
679 return optstring[0] == ':' ? ':' : '?'; | |
680 } | |
681 } | |
682 nextchar += strlen (nextchar); | |
683 if (longind != NULL) | |
684 *longind = option_index; | |
685 if (pfound->flag) | |
686 { | |
687 *(pfound->flag) = pfound->val; | |
688 return 0; | |
689 } | |
690 return pfound->val; | |
691 } | |
692 | |
693 /* Can't find it as a long option. If this is not getopt_long_only, | |
694 or the option starts with '--' or is not a valid short | |
695 option, then it's an error. | |
696 Otherwise interpret it as a short option. */ | |
697 if (!long_only || argv[optind][1] == '-' | |
698 || my_index (optstring, *nextchar) == NULL) | |
699 { | |
700 if (opterr) | |
701 { | |
702 if (argv[optind][1] == '-') | |
703 /* --option */ | |
704 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), | |
705 argv[0], nextchar); | |
706 else | |
707 /* +option or -option */ | |
708 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), | |
709 argv[0], argv[optind][0], nextchar); | |
710 } | |
711 nextchar = (char *) ""; | |
712 optind++; | |
713 optopt = 0; | |
714 return '?'; | |
715 } | |
716 } | |
717 | |
718 /* Look at and handle the next short option-character. */ | |
719 | |
720 { | |
721 char c = *nextchar++; | |
722 char *temp = my_index (optstring, c); | |
723 | |
724 /* Increment `optind' when we start to process its last character. */ | |
725 if (*nextchar == '\0') | |
726 ++optind; | |
727 | |
728 if (temp == NULL || c == ':') | |
729 { | |
730 if (opterr) | |
731 { | |
732 if (posixly_correct) | |
733 /* 1003.2 specifies the format of this message. */ | |
734 fprintf (stderr, _("%s: illegal option -- %c\n"), | |
735 argv[0], c); | |
736 else | |
737 fprintf (stderr, _("%s: invalid option -- %c\n"), | |
738 argv[0], c); | |
739 } | |
740 optopt = c; | |
741 return '?'; | |
742 } | |
743 /* Convenience. Treat POSIX -W foo same as long option --foo */ | |
744 if (temp[0] == 'W' && temp[1] == ';') | |
745 { | |
746 char *nameend; | |
747 const struct option *p; | |
748 const struct option *pfound = NULL; | |
749 int exact = 0; | |
750 int ambig = 0; | |
751 int indfound = 0; | |
752 int option_index; | |
753 | |
754 /* This is an option that requires an argument. */ | |
755 if (*nextchar != '\0') | |
756 { | |
757 optarg = nextchar; | |
758 /* If we end this ARGV-element by taking the rest as an arg, | |
759 we must advance to the next element now. */ | |
760 optind++; | |
761 } | |
762 else if (optind == argc) | |
763 { | |
764 if (opterr) | |
765 { | |
766 /* 1003.2 specifies the format of this message. */ | |
767 fprintf (stderr, _("%s: option requires an argument -- %c\n"), | |
768 argv[0], c); | |
769 } | |
770 optopt = c; | |
771 if (optstring[0] == ':') | |
772 c = ':'; | |
773 else | |
774 c = '?'; | |
775 return c; | |
776 } | |
777 else | |
778 /* We already incremented `optind' once; | |
779 increment it again when taking next ARGV-elt as argument. */ | |
780 optarg = argv[optind++]; | |
781 | |
782 /* optarg is now the argument, see if it's in the | |
783 table of longopts. */ | |
784 | |
785 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) | |
786 /* Do nothing. */ ; | |
787 | |
788 /* Test all long options for either exact match | |
789 or abbreviated matches. */ | |
790 for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
791 if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
792 { | |
793 if ((unsigned int) (nameend - nextchar) == strlen (p->name)) | |
794 { | |
795 /* Exact match found. */ | |
796 pfound = p; | |
797 indfound = option_index; | |
798 exact = 1; | |
799 break; | |
800 } | |
801 else if (pfound == NULL) | |
802 { | |
803 /* First nonexact match found. */ | |
804 pfound = p; | |
805 indfound = option_index; | |
806 } | |
807 else | |
808 /* Second or later nonexact match found. */ | |
809 ambig = 1; | |
810 } | |
811 if (ambig && !exact) | |
812 { | |
813 if (opterr) | |
814 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), | |
815 argv[0], argv[optind]); | |
816 nextchar += strlen (nextchar); | |
817 optind++; | |
818 return '?'; | |
819 } | |
820 if (pfound != NULL) | |
821 { | |
822 option_index = indfound; | |
823 if (*nameend) | |
824 { | |
825 /* Don't test has_arg with >, because some C compilers don't | |
826 allow it to be used on enums. */ | |
827 if (pfound->has_arg) | |
828 optarg = nameend + 1; | |
829 else | |
830 { | |
831 if (opterr) | |
832 fprintf (stderr, _("\ | |
833 %s: option `-W %s' doesn't allow an argument\n"), | |
834 argv[0], pfound->name); | |
835 | |
836 nextchar += strlen (nextchar); | |
837 return '?'; | |
838 } | |
839 } | |
840 else if (pfound->has_arg == 1) | |
841 { | |
842 if (optind < argc) | |
843 optarg = argv[optind++]; | |
844 else | |
845 { | |
846 if (opterr) | |
847 fprintf (stderr, | |
848 _("%s: option `%s' requires an argument\n"), | |
849 argv[0], argv[optind - 1]); | |
850 nextchar += strlen (nextchar); | |
851 return optstring[0] == ':' ? ':' : '?'; | |
852 } | |
853 } | |
854 nextchar += strlen (nextchar); | |
855 if (longind != NULL) | |
856 *longind = option_index; | |
857 if (pfound->flag) | |
858 { | |
859 *(pfound->flag) = pfound->val; | |
860 return 0; | |
861 } | |
862 return pfound->val; | |
863 } | |
864 nextchar = NULL; | |
865 return 'W'; /* Let the application handle it. */ | |
866 } | |
867 if (temp[1] == ':') | |
868 { | |
869 if (temp[2] == ':') | |
870 { | |
871 /* This is an option that accepts an argument optionally. */ | |
872 if (*nextchar != '\0') | |
873 { | |
874 optarg = nextchar; | |
875 optind++; | |
876 } | |
877 else | |
878 optarg = NULL; | |
879 nextchar = NULL; | |
880 } | |
881 else | |
882 { | |
883 /* This is an option that requires an argument. */ | |
884 if (*nextchar != '\0') | |
885 { | |
886 optarg = nextchar; | |
887 /* If we end this ARGV-element by taking the rest as an arg, | |
888 we must advance to the next element now. */ | |
889 optind++; | |
890 } | |
891 else if (optind == argc) | |
892 { | |
893 if (opterr) | |
894 { | |
895 /* 1003.2 specifies the format of this message. */ | |
896 fprintf (stderr, | |
897 _("%s: option requires an argument -- %c\n"), | |
898 argv[0], c); | |
899 } | |
900 optopt = c; | |
901 if (optstring[0] == ':') | |
902 c = ':'; | |
903 else | |
904 c = '?'; | |
905 } | |
906 else | |
907 /* We already incremented `optind' once; | |
908 increment it again when taking next ARGV-elt as argument. */ | |
909 optarg = argv[optind++]; | |
910 nextchar = NULL; | |
911 } | |
912 } | |
913 return c; | |
914 } | |
915 } | |
916 | |
917 int | |
918 getopt (argc, argv, optstring) | |
919 int argc; | |
920 char *const *argv; | |
921 const char *optstring; | |
922 { | |
923 return _getopt_internal (argc, argv, optstring, | |
924 (const struct option *) 0, | |
925 (int *) 0, | |
926 0); | |
927 } | |
928 | |
929 #endif /* Not ELIDE_CODE. */ | |
930 | |
931 #ifdef TEST | |
932 | |
933 /* Compile with -DTEST to make an executable for use in testing | |
934 the above definition of `getopt'. */ | |
935 | |
936 int | |
937 main (argc, argv) | |
938 int argc; | |
939 char **argv; | |
940 { | |
941 int c; | |
942 int digit_optind = 0; | |
943 | |
944 while (1) | |
945 { | |
946 int this_option_optind = optind ? optind : 1; | |
947 | |
948 c = getopt (argc, argv, "abc:d:0123456789"); | |
949 if (c == -1) | |
950 break; | |
951 | |
952 switch (c) | |
953 { | |
954 case '0': | |
955 case '1': | |
956 case '2': | |
957 case '3': | |
958 case '4': | |
959 case '5': | |
960 case '6': | |
961 case '7': | |
962 case '8': | |
963 case '9': | |
964 if (digit_optind != 0 && digit_optind != this_option_optind) | |
965 printf ("digits occur in two different argv-elements.\n"); | |
966 digit_optind = this_option_optind; | |
967 printf ("option %c\n", c); | |
968 break; | |
969 | |
970 case 'a': | |
971 printf ("option a\n"); | |
972 break; | |
973 | |
974 case 'b': | |
975 printf ("option b\n"); | |
976 break; | |
977 | |
978 case 'c': | |
979 printf ("option c with value `%s'\n", optarg); | |
980 break; | |
981 | |
982 case '?': | |
983 break; | |
984 | |
985 default: | |
986 printf ("?? getopt returned character code 0%o ??\n", c); | |
987 } | |
988 } | |
989 | |
990 if (optind < argc) | |
991 { | |
992 printf ("non-option ARGV-elements: "); | |
993 while (optind < argc) | |
994 printf ("%s ", argv[optind++]); | |
995 printf ("\n"); | |
996 } | |
997 | |
998 exit (0); | |
999 } | |
1000 | |
1001 #endif /* TEST */ |