diff options
author | dotdotisdead <dotdotisdead@a3eca27d-f21b-0410-9b4a-6511e771f64e> | 2006-09-30 04:47:47 +0000 |
---|---|---|
committer | dotdotisdead <dotdotisdead@a3eca27d-f21b-0410-9b4a-6511e771f64e> | 2006-09-30 04:47:47 +0000 |
commit | ad85653ca73c8126de516b9a4294e8f08577c00d (patch) | |
tree | 79fb4d644ccf6a4fe8dac146b801a21d63537b23 /xdelta1/getopt.c | |
parent | 5a7c245871879325d7b05c06e0b2011203986ee8 (diff) |
import 1.1.3
Diffstat (limited to 'xdelta1/getopt.c')
-rwxr-xr-x | xdelta1/getopt.c | 749 |
1 files changed, 749 insertions, 0 deletions
diff --git a/xdelta1/getopt.c b/xdelta1/getopt.c new file mode 100755 index 0000000..28b8fea --- /dev/null +++ b/xdelta1/getopt.c | |||
@@ -0,0 +1,749 @@ | |||
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 | ||
21 | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | ||
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 | #ifndef __STDC__ | ||
30 | /* This is a separate conditional since some stdc systems | ||
31 | reject `defined (const)'. */ | ||
32 | #ifndef const | ||
33 | #define const | ||
34 | #endif | ||
35 | #endif | ||
36 | |||
37 | #ifdef HAVE_CONFIG_H | ||
38 | #include <config.h> | ||
39 | #endif | ||
40 | |||
41 | #include <stdio.h> | ||
42 | #include <string.h> | ||
43 | |||
44 | /* Comment out all this code if we are using the GNU C Library, and are not | ||
45 | actually compiling the library itself. This code is part of the GNU C | ||
46 | Library, but also included in many other GNU distributions. Compiling | ||
47 | and linking in this code is a waste when using the GNU C library | ||
48 | (especially if it is a shared library). Rather than having every GNU | ||
49 | program understand `configure --with-gnu-libc' and omit the object files, | ||
50 | it is simpler to just do this in the source for each such file. */ | ||
51 | |||
52 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__) | ||
53 | |||
54 | |||
55 | /* This needs to come after some library #include | ||
56 | to get __GNU_LIBRARY__ defined. */ | ||
57 | #ifdef __GNU_LIBRARY__ | ||
58 | /* Don't include stdlib.h for non-GNU C libraries because some of them | ||
59 | contain conflicting prototypes for getopt. */ | ||
60 | #include <stdlib.h> | ||
61 | #endif /* GNU C library. */ | ||
62 | |||
63 | /* This version of `getopt' appears to the caller like standard Unix `getopt' | ||
64 | but it behaves differently for the user, since it allows the user | ||
65 | to intersperse the options with the other arguments. | ||
66 | |||
67 | As `getopt' works, it permutes the elements of ARGV so that, | ||
68 | when it is done, all the options precede everything else. Thus | ||
69 | all application programs are extended to handle flexible argument order. | ||
70 | |||
71 | Setting the environment variable POSIXLY_CORRECT disables permutation. | ||
72 | Then the behavior is completely standard. | ||
73 | |||
74 | GNU application programs can use a third alternative mode in which | ||
75 | they can distinguish the relative order of options and other arguments. */ | ||
76 | |||
77 | #include "getopt.h" | ||
78 | |||
79 | /* For communication from `getopt' to the caller. | ||
80 | When `getopt' finds an option that takes an argument, | ||
81 | the argument value is returned here. | ||
82 | Also, when `ordering' is RETURN_IN_ORDER, | ||
83 | each non-option ARGV-element is returned here. */ | ||
84 | |||
85 | char *optarg = NULL; | ||
86 | |||
87 | /* Index in ARGV of the next element to be scanned. | ||
88 | This is used for communication to and from the caller | ||
89 | and for communication between successive calls to `getopt'. | ||
90 | |||
91 | On entry to `getopt', zero means this is the first call; initialize. | ||
92 | |||
93 | When `getopt' returns EOF, this is the index of the first of the | ||
94 | non-option elements that the caller should itself scan. | ||
95 | |||
96 | Otherwise, `optind' communicates from one call to the next | ||
97 | how much of ARGV has been scanned so far. */ | ||
98 | |||
99 | /* XXX 1003.2 says this must be 1 before any call. */ | ||
100 | int optind = 0; | ||
101 | |||
102 | /* The next char to be scanned in the option-element | ||
103 | in which the last option character we returned was found. | ||
104 | This allows us to pick up the scan where we left off. | ||
105 | |||
106 | If this is zero, or a null string, it means resume the scan | ||
107 | by advancing to the next ARGV-element. */ | ||
108 | |||
109 | static char *nextchar; | ||
110 | |||
111 | /* Callers store zero here to inhibit the error message | ||
112 | for unrecognized options. */ | ||
113 | |||
114 | int opterr = 1; | ||
115 | |||
116 | /* Set to an option character which was unrecognized. | ||
117 | This must be initialized on some systems to avoid linking in the | ||
118 | system's own getopt implementation. */ | ||
119 | |||
120 | int optopt = '?'; | ||
121 | |||
122 | /* Describe how to deal with options that follow non-option ARGV-elements. | ||
123 | |||
124 | If the caller did not specify anything, | ||
125 | the default is REQUIRE_ORDER if the environment variable | ||
126 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | ||
127 | |||
128 | REQUIRE_ORDER means don't recognize them as options; | ||
129 | stop option processing when the first non-option is seen. | ||
130 | This is what Unix does. | ||
131 | This mode of operation is selected by either setting the environment | ||
132 | variable POSIXLY_CORRECT, or using `+' as the first character | ||
133 | of the list of option characters. | ||
134 | |||
135 | PERMUTE is the default. We permute the contents of ARGV as we scan, | ||
136 | so that eventually all the non-options are at the end. This allows options | ||
137 | to be given in any order, even with programs that were not written to | ||
138 | expect this. | ||
139 | |||
140 | RETURN_IN_ORDER is an option available to programs that were written | ||
141 | to expect options and other ARGV-elements in any order and that care about | ||
142 | the ordering of the two. We describe each non-option ARGV-element | ||
143 | as if it were the argument of an option with character code 1. | ||
144 | Using `-' as the first character of the list of option characters | ||
145 | selects this mode of operation. | ||
146 | |||
147 | The special argument `--' forces an end of option-scanning regardless | ||
148 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | ||
149 | `--' can cause `getopt' to return EOF with `optind' != ARGC. */ | ||
150 | |||
151 | static enum | ||
152 | { | ||
153 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER | ||
154 | } ordering; | ||
155 | |||
156 | /* Value of POSIXLY_CORRECT environment variable. */ | ||
157 | static char *posixly_correct; | ||
158 | |||
159 | #ifdef __GNU_LIBRARY__ | ||
160 | /* We want to avoid inclusion of string.h with non-GNU libraries | ||
161 | because there are many ways it can cause trouble. | ||
162 | On some systems, it contains special magic macros that don't work | ||
163 | in GCC. */ | ||
164 | #include <string.h> | ||
165 | #define my_index strchr | ||
166 | #else | ||
167 | |||
168 | /* Avoid depending on library functions or files | ||
169 | whose names are inconsistent. */ | ||
170 | |||
171 | char *getenv (); | ||
172 | |||
173 | static char * | ||
174 | my_index (str, chr) | ||
175 | const char *str; | ||
176 | int chr; | ||
177 | { | ||
178 | while (*str) | ||
179 | { | ||
180 | if (*str == chr) | ||
181 | return (char *) str; | ||
182 | str++; | ||
183 | } | ||
184 | return 0; | ||
185 | } | ||
186 | |||
187 | /* If using GCC, we can safely declare strlen this way. | ||
188 | If not using GCC, it is ok not to declare it. */ | ||
189 | #ifdef __GNUC__ | ||
190 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | ||
191 | That was relevant to code that was here before. */ | ||
192 | #ifndef __STDC__ | ||
193 | /* gcc with -traditional declares the built-in strlen to return int, | ||
194 | and has done so at least since version 2.4.5. -- rms. */ | ||
195 | extern int strlen (const char *); | ||
196 | #endif /* not __STDC__ */ | ||
197 | #endif /* __GNUC__ */ | ||
198 | |||
199 | #endif /* not __GNU_LIBRARY__ */ | ||
200 | |||
201 | /* Handle permutation of arguments. */ | ||
202 | |||
203 | /* Describe the part of ARGV that contains non-options that have | ||
204 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | ||
205 | `last_nonopt' is the index after the last of them. */ | ||
206 | |||
207 | static int first_nonopt; | ||
208 | static int last_nonopt; | ||
209 | |||
210 | /* Exchange two adjacent subsequences of ARGV. | ||
211 | One subsequence is elements [first_nonopt,last_nonopt) | ||
212 | which contains all the non-options that have been skipped so far. | ||
213 | The other is elements [last_nonopt,optind), which contains all | ||
214 | the options processed since those non-options were skipped. | ||
215 | |||
216 | `first_nonopt' and `last_nonopt' are relocated so that they describe | ||
217 | the new indices of the non-options in ARGV after they are moved. */ | ||
218 | |||
219 | static void | ||
220 | exchange (argv) | ||
221 | char **argv; | ||
222 | { | ||
223 | int bottom = first_nonopt; | ||
224 | int middle = last_nonopt; | ||
225 | int top = optind; | ||
226 | char *tem; | ||
227 | |||
228 | /* Exchange the shorter segment with the far end of the longer segment. | ||
229 | That puts the shorter segment into the right place. | ||
230 | It leaves the longer segment in the right place overall, | ||
231 | but it consists of two parts that need to be swapped next. */ | ||
232 | |||
233 | while (top > middle && middle > bottom) | ||
234 | { | ||
235 | if (top - middle > middle - bottom) | ||
236 | { | ||
237 | /* Bottom segment is the short one. */ | ||
238 | int len = middle - bottom; | ||
239 | register int i; | ||
240 | |||
241 | /* Swap it with the top part of the top segment. */ | ||
242 | for (i = 0; i < len; i++) | ||
243 | { | ||
244 | tem = argv[bottom + i]; | ||
245 | argv[bottom + i] = argv[top - (middle - bottom) + i]; | ||
246 | argv[top - (middle - bottom) + i] = tem; | ||
247 | } | ||
248 | /* Exclude the moved bottom segment from further swapping. */ | ||
249 | top -= len; | ||
250 | } | ||
251 | else | ||
252 | { | ||
253 | /* Top segment is the short one. */ | ||
254 | int len = top - middle; | ||
255 | register int i; | ||
256 | |||
257 | /* Swap it with the bottom part of the bottom segment. */ | ||
258 | for (i = 0; i < len; i++) | ||
259 | { | ||
260 | tem = argv[bottom + i]; | ||
261 | argv[bottom + i] = argv[middle + i]; | ||
262 | argv[middle + i] = tem; | ||
263 | } | ||
264 | /* Exclude the moved top segment from further swapping. */ | ||
265 | bottom += len; | ||
266 | } | ||
267 | } | ||
268 | |||
269 | /* Update records for the slots the non-options now occupy. */ | ||
270 | |||
271 | first_nonopt += (optind - last_nonopt); | ||
272 | last_nonopt = optind; | ||
273 | } | ||
274 | |||
275 | /* Initialize the internal data when the first call is made. */ | ||
276 | |||
277 | static const char * | ||
278 | _getopt_initialize (optstring) | ||
279 | const char *optstring; | ||
280 | { | ||
281 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 | ||
282 | is the program name); the sequence of previously skipped | ||
283 | non-option ARGV-elements is empty. */ | ||
284 | |||
285 | first_nonopt = last_nonopt = optind = 1; | ||
286 | |||
287 | nextchar = NULL; | ||
288 | |||
289 | posixly_correct = getenv ("POSIXLY_CORRECT"); | ||
290 | |||
291 | /* Determine how to handle the ordering of options and nonoptions. */ | ||
292 | |||
293 | if (optstring[0] == '-') | ||
294 | { | ||
295 | ordering = RETURN_IN_ORDER; | ||
296 | ++optstring; | ||
297 | } | ||
298 | else if (optstring[0] == '+') | ||
299 | { | ||
300 | ordering = REQUIRE_ORDER; | ||
301 | ++optstring; | ||
302 | } | ||
303 | else if (posixly_correct != NULL) | ||
304 | ordering = REQUIRE_ORDER; | ||
305 | else | ||
306 | ordering = PERMUTE; | ||
307 | |||
308 | return optstring; | ||
309 | } | ||
310 | |||
311 | /* Scan elements of ARGV (whose length is ARGC) for option characters | ||
312 | given in OPTSTRING. | ||
313 | |||
314 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | ||
315 | then it is an option element. The characters of this element | ||
316 | (aside from the initial '-') are option characters. If `getopt' | ||
317 | is called repeatedly, it returns successively each of the option characters | ||
318 | from each of the option elements. | ||
319 | |||
320 | If `getopt' finds another option character, it returns that character, | ||
321 | updating `optind' and `nextchar' so that the next call to `getopt' can | ||
322 | resume the scan with the following option character or ARGV-element. | ||
323 | |||
324 | If there are no more option characters, `getopt' returns `EOF'. | ||
325 | Then `optind' is the index in ARGV of the first ARGV-element | ||
326 | that is not an option. (The ARGV-elements have been permuted | ||
327 | so that those that are not options now come last.) | ||
328 | |||
329 | OPTSTRING is a string containing the legitimate option characters. | ||
330 | If an option character is seen that is not listed in OPTSTRING, | ||
331 | return '?' after printing an error message. If you set `opterr' to | ||
332 | zero, the error message is suppressed but we still return '?'. | ||
333 | |||
334 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | ||
335 | so the following text in the same ARGV-element, or the text of the following | ||
336 | ARGV-element, is returned in `optarg'. Two colons mean an option that | ||
337 | wants an optional arg; if there is text in the current ARGV-element, | ||
338 | it is returned in `optarg', otherwise `optarg' is set to zero. | ||
339 | |||
340 | If OPTSTRING starts with `-' or `+', it requests different methods of | ||
341 | handling the non-option ARGV-elements. | ||
342 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | ||
343 | |||
344 | Long-named options begin with `--' instead of `-'. | ||
345 | Their names may be abbreviated as long as the abbreviation is unique | ||
346 | or is an exact match for some defined option. If they have an | ||
347 | argument, it follows the option name in the same ARGV-element, separated | ||
348 | from the option name by a `=', or else the in next ARGV-element. | ||
349 | When `getopt' finds a long-named option, it returns 0 if that option's | ||
350 | `flag' field is nonzero, the value of the option's `val' field | ||
351 | if the `flag' field is zero. | ||
352 | |||
353 | The elements of ARGV aren't really const, because we permute them. | ||
354 | But we pretend they're const in the prototype to be compatible | ||
355 | with other systems. | ||
356 | |||
357 | LONGOPTS is a vector of `struct option' terminated by an | ||
358 | element containing a name which is zero. | ||
359 | |||
360 | LONGIND returns the index in LONGOPT of the long-named option found. | ||
361 | It is only valid when a long-named option has been found by the most | ||
362 | recent call. | ||
363 | |||
364 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | ||
365 | long-named options. */ | ||
366 | |||
367 | int | ||
368 | _getopt_internal (argc, argv, optstring, longopts, longind, long_only) | ||
369 | int argc; | ||
370 | char *const *argv; | ||
371 | const char *optstring; | ||
372 | const struct option *longopts; | ||
373 | int *longind; | ||
374 | int long_only; | ||
375 | { | ||
376 | optarg = NULL; | ||
377 | |||
378 | if (optind == 0) | ||
379 | optstring = _getopt_initialize (optstring); | ||
380 | |||
381 | if (nextchar == NULL || *nextchar == '\0') | ||
382 | { | ||
383 | /* Advance to the next ARGV-element. */ | ||
384 | |||
385 | if (ordering == PERMUTE) | ||
386 | { | ||
387 | /* If we have just processed some options following some non-options, | ||
388 | exchange them so that the options come first. */ | ||
389 | |||
390 | if (first_nonopt != last_nonopt && last_nonopt != optind) | ||
391 | exchange ((char **) argv); | ||
392 | else if (last_nonopt != optind) | ||
393 | first_nonopt = optind; | ||
394 | |||
395 | /* Skip any additional non-options | ||
396 | and extend the range of non-options previously skipped. */ | ||
397 | |||
398 | while (optind < argc | ||
399 | && (argv[optind][0] != '-' || argv[optind][1] == '\0')) | ||
400 | optind++; | ||
401 | last_nonopt = optind; | ||
402 | } | ||
403 | |||
404 | /* The special ARGV-element `--' means premature end of options. | ||
405 | Skip it like a null option, | ||
406 | then exchange with previous non-options as if it were an option, | ||
407 | then skip everything else like a non-option. */ | ||
408 | |||
409 | if (optind != argc && !strcmp (argv[optind], "--")) | ||
410 | { | ||
411 | optind++; | ||
412 | |||
413 | if (first_nonopt != last_nonopt && last_nonopt != optind) | ||
414 | exchange ((char **) argv); | ||
415 | else if (first_nonopt == last_nonopt) | ||
416 | first_nonopt = optind; | ||
417 | last_nonopt = argc; | ||
418 | |||
419 | optind = argc; | ||
420 | } | ||
421 | |||
422 | /* If we have done all the ARGV-elements, stop the scan | ||
423 | and back over any non-options that we skipped and permuted. */ | ||
424 | |||
425 | if (optind == argc) | ||
426 | { | ||
427 | /* Set the next-arg-index to point at the non-options | ||
428 | that we previously skipped, so the caller will digest them. */ | ||
429 | if (first_nonopt != last_nonopt) | ||
430 | optind = first_nonopt; | ||
431 | return EOF; | ||
432 | } | ||
433 | |||
434 | /* If we have come to a non-option and did not permute it, | ||
435 | either stop the scan or describe it to the caller and pass it by. */ | ||
436 | |||
437 | if ((argv[optind][0] != '-' || argv[optind][1] == '\0')) | ||
438 | { | ||
439 | if (ordering == REQUIRE_ORDER) | ||
440 | return EOF; | ||
441 | optarg = argv[optind++]; | ||
442 | return 1; | ||
443 | } | ||
444 | |||
445 | /* We have found another option-ARGV-element. | ||
446 | Skip the initial punctuation. */ | ||
447 | |||
448 | nextchar = (argv[optind] + 1 | ||
449 | + (longopts != NULL && argv[optind][1] == '-')); | ||
450 | } | ||
451 | |||
452 | /* Decode the current option-ARGV-element. */ | ||
453 | |||
454 | /* Check whether the ARGV-element is a long option. | ||
455 | |||
456 | If long_only and the ARGV-element has the form "-f", where f is | ||
457 | a valid short option, don't consider it an abbreviated form of | ||
458 | a long option that starts with f. Otherwise there would be no | ||
459 | way to give the -f short option. | ||
460 | |||
461 | On the other hand, if there's a long option "fubar" and | ||
462 | the ARGV-element is "-fu", do consider that an abbreviation of | ||
463 | the long option, just like "--fu", and not "-f" with arg "u". | ||
464 | |||
465 | This distinction seems to be the most useful approach. */ | ||
466 | |||
467 | if (longopts != NULL | ||
468 | && (argv[optind][1] == '-' | ||
469 | || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) | ||
470 | { | ||
471 | char *nameend; | ||
472 | const struct option *p; | ||
473 | const struct option *pfound = NULL; | ||
474 | int exact = 0; | ||
475 | int ambig = 0; | ||
476 | int indfound; | ||
477 | int option_index; | ||
478 | |||
479 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | ||
480 | /* Do nothing. */ ; | ||
481 | |||
482 | /* Test all long options for either exact match | ||
483 | or abbreviated matches. */ | ||
484 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | ||
485 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | ||
486 | { | ||
487 | if (nameend - nextchar == strlen (p->name)) | ||
488 | { | ||
489 | /* Exact match found. */ | ||
490 | pfound = p; | ||
491 | indfound = option_index; | ||
492 | exact = 1; | ||
493 | break; | ||
494 | } | ||
495 | else if (pfound == NULL) | ||
496 | { | ||
497 | /* First nonexact match found. */ | ||
498 | pfound = p; | ||
499 | indfound = option_index; | ||
500 | } | ||
501 | else | ||
502 | /* Second or later nonexact match found. */ | ||
503 | ambig = 1; | ||
504 | } | ||
505 | |||
506 | if (ambig && !exact) | ||
507 | { | ||
508 | if (opterr) | ||
509 | fprintf (stderr, "%s: option `%s' is ambiguous\n", | ||
510 | argv[0], argv[optind]); | ||
511 | nextchar += strlen (nextchar); | ||
512 | optind++; | ||
513 | return '?'; | ||
514 | } | ||
515 | |||
516 | if (pfound != NULL) | ||
517 | { | ||
518 | option_index = indfound; | ||
519 | optind++; | ||
520 | if (*nameend) | ||
521 | { | ||
522 | /* Don't test has_arg with >, because some C compilers don't | ||
523 | allow it to be used on enums. */ | ||
524 | if (pfound->has_arg) | ||
525 | optarg = nameend + 1; | ||
526 | else | ||
527 | { | ||
528 | if (opterr) | ||
529 | { | ||
530 | if (argv[optind - 1][1] == '-') | ||
531 | /* --option */ | ||
532 | fprintf (stderr, | ||
533 | "%s: option `--%s' doesn't allow an argument\n", | ||
534 | argv[0], pfound->name); | ||
535 | else | ||
536 | /* +option or -option */ | ||
537 | fprintf (stderr, | ||
538 | "%s: option `%c%s' doesn't allow an argument\n", | ||
539 | argv[0], argv[optind - 1][0], pfound->name); | ||
540 | } | ||
541 | nextchar += strlen (nextchar); | ||
542 | return '?'; | ||
543 | } | ||
544 | } | ||
545 | else if (pfound->has_arg == 1) | ||
546 | { | ||
547 | if (optind < argc) | ||
548 | optarg = argv[optind++]; | ||
549 | else | ||
550 | { | ||
551 | if (opterr) | ||
552 | fprintf (stderr, "%s: option `%s' requires an argument\n", | ||
553 | argv[0], argv[optind - 1]); | ||
554 | nextchar += strlen (nextchar); | ||
555 | return optstring[0] == ':' ? ':' : '?'; | ||
556 | } | ||
557 | } | ||
558 | nextchar += strlen (nextchar); | ||
559 | if (longind != NULL) | ||
560 | *longind = option_index; | ||
561 | if (pfound->flag) | ||
562 | { | ||
563 | *(pfound->flag) = pfound->val; | ||
564 | return 0; | ||
565 | } | ||
566 | return pfound->val; | ||
567 | } | ||
568 | |||
569 | /* Can't find it as a long option. If this is not getopt_long_only, | ||
570 | or the option starts with '--' or is not a valid short | ||
571 | option, then it's an error. | ||
572 | Otherwise interpret it as a short option. */ | ||
573 | if (!long_only || argv[optind][1] == '-' | ||
574 | || my_index (optstring, *nextchar) == NULL) | ||
575 | { | ||
576 | if (opterr) | ||
577 | { | ||
578 | if (argv[optind][1] == '-') | ||
579 | /* --option */ | ||
580 | fprintf (stderr, "%s: unrecognized option `--%s'\n", | ||
581 | argv[0], nextchar); | ||
582 | else | ||
583 | /* +option or -option */ | ||
584 | fprintf (stderr, "%s: unrecognized option `%c%s'\n", | ||
585 | argv[0], argv[optind][0], nextchar); | ||
586 | } | ||
587 | nextchar = (char *) ""; | ||
588 | optind++; | ||
589 | return '?'; | ||
590 | } | ||
591 | } | ||
592 | |||
593 | /* Look at and handle the next short option-character. */ | ||
594 | |||
595 | { | ||
596 | char c = *nextchar++; | ||
597 | char *temp = my_index (optstring, c); | ||
598 | |||
599 | /* Increment `optind' when we start to process its last character. */ | ||
600 | if (*nextchar == '\0') | ||
601 | ++optind; | ||
602 | |||
603 | if (temp == NULL || c == ':') | ||
604 | { | ||
605 | if (opterr) | ||
606 | { | ||
607 | if (posixly_correct) | ||
608 | /* 1003.2 specifies the format of this message. */ | ||
609 | fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c); | ||
610 | else | ||
611 | fprintf (stderr, "%s: invalid option -- %c\n", argv[0], c); | ||
612 | } | ||
613 | optopt = c; | ||
614 | return '?'; | ||
615 | } | ||
616 | if (temp[1] == ':') | ||
617 | { | ||
618 | if (temp[2] == ':') | ||
619 | { | ||
620 | /* This is an option that accepts an argument optionally. */ | ||
621 | if (*nextchar != '\0') | ||
622 | { | ||
623 | optarg = nextchar; | ||
624 | optind++; | ||
625 | } | ||
626 | else | ||
627 | optarg = NULL; | ||
628 | nextchar = NULL; | ||
629 | } | ||
630 | else | ||
631 | { | ||
632 | /* This is an option that requires an argument. */ | ||
633 | if (*nextchar != '\0') | ||
634 | { | ||
635 | optarg = nextchar; | ||
636 | /* If we end this ARGV-element by taking the rest as an arg, | ||
637 | we must advance to the next element now. */ | ||
638 | optind++; | ||
639 | } | ||
640 | else if (optind == argc) | ||
641 | { | ||
642 | if (opterr) | ||
643 | { | ||
644 | /* 1003.2 specifies the format of this message. */ | ||
645 | fprintf (stderr, "%s: option requires an argument -- %c\n", | ||
646 | argv[0], c); | ||
647 | } | ||
648 | optopt = c; | ||
649 | if (optstring[0] == ':') | ||
650 | c = ':'; | ||
651 | else | ||
652 | c = '?'; | ||
653 | } | ||
654 | else | ||
655 | /* We already incremented `optind' once; | ||
656 | increment it again when taking next ARGV-elt as argument. */ | ||
657 | optarg = argv[optind++]; | ||
658 | nextchar = NULL; | ||
659 | } | ||
660 | } | ||
661 | return c; | ||
662 | } | ||
663 | } | ||
664 | |||
665 | int | ||
666 | getopt (argc, argv, optstring) | ||
667 | int argc; | ||
668 | char *const *argv; | ||
669 | const char *optstring; | ||
670 | { | ||
671 | return _getopt_internal (argc, argv, optstring, | ||
672 | (const struct option *) 0, | ||
673 | (int *) 0, | ||
674 | 0); | ||
675 | } | ||
676 | |||
677 | #endif /* _LIBC or not __GNU_LIBRARY__. */ | ||
678 | |||
679 | #ifdef TEST | ||
680 | |||
681 | /* Compile with -DTEST to make an executable for use in testing | ||
682 | the above definition of `getopt'. */ | ||
683 | |||
684 | int | ||
685 | main (argc, argv) | ||
686 | int argc; | ||
687 | char **argv; | ||
688 | { | ||
689 | int c; | ||
690 | int digit_optind = 0; | ||
691 | |||
692 | while (1) | ||
693 | { | ||
694 | int this_option_optind = optind ? optind : 1; | ||
695 | |||
696 | c = getopt (argc, argv, "abc:d:0123456789"); | ||
697 | if (c == EOF) | ||
698 | break; | ||
699 | |||
700 | switch (c) | ||
701 | { | ||
702 | case '0': | ||
703 | case '1': | ||
704 | case '2': | ||
705 | case '3': | ||
706 | case '4': | ||
707 | case '5': | ||
708 | case '6': | ||
709 | case '7': | ||
710 | case '8': | ||
711 | case '9': | ||
712 | if (digit_optind != 0 && digit_optind != this_option_optind) | ||
713 | printf ("digits occur in two different argv-elements.\n"); | ||
714 | digit_optind = this_option_optind; | ||
715 | printf ("option %c\n", c); | ||
716 | break; | ||
717 | |||
718 | case 'a': | ||
719 | printf ("option a\n"); | ||
720 | break; | ||
721 | |||
722 | case 'b': | ||
723 | printf ("option b\n"); | ||
724 | break; | ||
725 | |||
726 | case 'c': | ||
727 | printf ("option c with value `%s'\n", optarg); | ||
728 | break; | ||
729 | |||
730 | case '?': | ||
731 | break; | ||
732 | |||
733 | default: | ||
734 | printf ("?? getopt returned character code 0%o ??\n", c); | ||
735 | } | ||
736 | } | ||
737 | |||
738 | if (optind < argc) | ||
739 | { | ||
740 | printf ("non-option ARGV-elements: "); | ||
741 | while (optind < argc) | ||
742 | printf ("%s ", argv[optind++]); | ||
743 | printf ("\n"); | ||
744 | } | ||
745 | |||
746 | exit (0); | ||
747 | } | ||
748 | |||
749 | #endif /* TEST */ | ||