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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 drepper@gnu.org | |
4 | before changing it! | |
5 | Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001,2002 | |
6 | Free Software Foundation, Inc. | |
7 | This file is part of the GNU C Library. | |
8 | ||
9 | The GNU C Library is free software; you can redistribute it and/or | |
10 | modify it under the terms of the GNU Lesser General Public | |
11 | License as published by the Free Software Foundation; either | |
12 | version 2.1 of the License, or (at your option) any later version. | |
13 | ||
14 | The GNU C Library 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 GNU | |
17 | Lesser General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU Lesser General Public | |
20 | License along with the GNU C Library; if not, write to the Free | |
21 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
22 | 02111-1307 USA. */ | |
23 | \f | |
24 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. | |
25 | Ditto for AIX 3.2 and <stdlib.h>. */ | |
26 | #ifndef _NO_PROTO | |
27 | # define _NO_PROTO | |
28 | #endif | |
29 | ||
30 | #ifdef HAVE_CONFIG_H | |
31 | # include <config.h> | |
32 | #endif | |
33 | ||
34 | #if !defined __STDC__ || !__STDC__ | |
35 | /* This is a separate conditional since some stdc systems | |
36 | reject `defined (const)'. */ | |
37 | # ifndef const | |
38 | # define const | |
39 | # endif | |
40 | #endif | |
41 | ||
42 | #include <stdio.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 | #define GETOPT_INTERFACE_VERSION 2 | |
53 | #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2 | |
54 | # include <gnu-versions.h> | |
55 | # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION | |
56 | # define ELIDE_CODE | |
57 | # endif | |
58 | #endif | |
59 | ||
60 | #ifndef ELIDE_CODE | |
61 | ||
62 | ||
63 | /* This needs to come after some library #include | |
64 | to get __GNU_LIBRARY__ defined. */ | |
65 | #ifdef __GNU_LIBRARY__ | |
66 | /* Don't include stdlib.h for non-GNU C libraries because some of them | |
67 | contain conflicting prototypes for getopt. */ | |
68 | # include <stdlib.h> | |
69 | # include <unistd.h> | |
70 | #endif /* GNU C library. */ | |
71 | ||
72 | #ifdef VMS | |
73 | # include <unixlib.h> | |
74 | # if HAVE_STRING_H - 0 | |
75 | # include <string.h> | |
76 | # endif | |
77 | #endif | |
78 | ||
79 | #ifndef _ | |
80 | /* This is for other GNU distributions with internationalized messages. */ | |
81 | # if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC | |
82 | # include <libintl.h> | |
83 | # ifndef _ | |
84 | # define _(msgid) gettext (msgid) | |
85 | # endif | |
86 | # else | |
87 | # define _(msgid) (msgid) | |
88 | # endif | |
89 | # if defined _LIBC && defined USE_IN_LIBIO | |
90 | # include <wchar.h> | |
91 | # endif | |
92 | #endif | |
93 | ||
94 | #ifndef attribute_hidden | |
95 | # define attribute_hidden | |
96 | #endif | |
97 | ||
98 | /* This version of `getopt' appears to the caller like standard Unix `getopt' | |
99 | but it behaves differently for the user, since it allows the user | |
100 | to intersperse the options with the other arguments. | |
101 | ||
102 | As `getopt' works, it permutes the elements of ARGV so that, | |
103 | when it is done, all the options precede everything else. Thus | |
104 | all application programs are extended to handle flexible argument order. | |
105 | ||
106 | Setting the environment variable POSIXLY_CORRECT disables permutation. | |
107 | Then the behavior is completely standard. | |
108 | ||
109 | GNU application programs can use a third alternative mode in which | |
110 | they can distinguish the relative order of options and other arguments. */ | |
111 | ||
112 | #include "getopt.h" | |
113 | ||
114 | /* For communication from `getopt' to the caller. | |
115 | When `getopt' finds an option that takes an argument, | |
116 | the argument value is returned here. | |
117 | Also, when `ordering' is RETURN_IN_ORDER, | |
118 | each non-option ARGV-element is returned here. */ | |
119 | ||
120 | char *optarg; | |
121 | ||
122 | /* Index in ARGV of the next element to be scanned. | |
123 | This is used for communication to and from the caller | |
124 | and for communication between successive calls to `getopt'. | |
125 | ||
126 | On entry to `getopt', zero means this is the first call; initialize. | |
127 | ||
128 | When `getopt' returns -1, this is the index of the first of the | |
129 | non-option elements that the caller should itself scan. | |
130 | ||
131 | Otherwise, `optind' communicates from one call to the next | |
132 | how much of ARGV has been scanned so far. */ | |
133 | ||
134 | /* 1003.2 says this must be 1 before any call. */ | |
135 | int optind = 1; | |
136 | ||
137 | /* Formerly, initialization of getopt depended on optind==0, which | |
138 | causes problems with re-calling getopt as programs generally don't | |
139 | know that. */ | |
140 | ||
141 | int __getopt_initialized attribute_hidden; | |
142 | ||
143 | /* The next char to be scanned in the option-element | |
144 | in which the last option character we returned was found. | |
145 | This allows us to pick up the scan where we left off. | |
146 | ||
147 | If this is zero, or a null string, it means resume the scan | |
148 | by advancing to the next ARGV-element. */ | |
149 | ||
150 | static char *nextchar; | |
151 | ||
152 | /* Callers store zero here to inhibit the error message | |
153 | for unrecognized options. */ | |
154 | ||
155 | int opterr = 1; | |
156 | ||
157 | /* Set to an option character which was unrecognized. | |
158 | This must be initialized on some systems to avoid linking in the | |
159 | system's own getopt implementation. */ | |
160 | ||
161 | int optopt = '?'; | |
162 | ||
163 | /* Describe how to deal with options that follow non-option ARGV-elements. | |
164 | ||
165 | If the caller did not specify anything, | |
166 | the default is REQUIRE_ORDER if the environment variable | |
167 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | |
168 | ||
169 | REQUIRE_ORDER means don't recognize them as options; | |
170 | stop option processing when the first non-option is seen. | |
171 | This is what Unix does. | |
172 | This mode of operation is selected by either setting the environment | |
173 | variable POSIXLY_CORRECT, or using `+' as the first character | |
174 | of the list of option characters. | |
175 | ||
176 | PERMUTE is the default. We permute the contents of ARGV as we scan, | |
177 | so that eventually all the non-options are at the end. This allows options | |
178 | to be given in any order, even with programs that were not written to | |
179 | expect this. | |
180 | ||
181 | RETURN_IN_ORDER is an option available to programs that were written | |
182 | to expect options and other ARGV-elements in any order and that care about | |
183 | the ordering of the two. We describe each non-option ARGV-element | |
184 | as if it were the argument of an option with character code 1. | |
185 | Using `-' as the first character of the list of option characters | |
186 | selects this mode of operation. | |
187 | ||
188 | The special argument `--' forces an end of option-scanning regardless | |
189 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | |
190 | `--' can cause `getopt' to return -1 with `optind' != ARGC. */ | |
191 | ||
192 | static enum | |
193 | { | |
194 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER | |
195 | } ordering; | |
196 | ||
197 | /* Value of POSIXLY_CORRECT environment variable. */ | |
198 | static char *posixly_correct; | |
199 | \f | |
200 | #ifdef __GNU_LIBRARY__ | |
201 | /* We want to avoid inclusion of string.h with non-GNU libraries | |
202 | because there are many ways it can cause trouble. | |
203 | On some systems, it contains special magic macros that don't work | |
204 | in GCC. */ | |
205 | # include <string.h> | |
206 | # define my_index strchr | |
207 | #else | |
208 | ||
209 | # if HAVE_STRING_H | |
210 | # include <string.h> | |
211 | # else | |
212 | # include <strings.h> | |
213 | # endif | |
214 | ||
215 | /* Avoid depending on library functions or files | |
216 | whose names are inconsistent. */ | |
217 | ||
218 | #ifndef getenv | |
219 | extern char *getenv (); | |
220 | #endif | |
221 | ||
222 | static char * | |
223 | my_index (str, chr) | |
224 | const char *str; | |
225 | int chr; | |
226 | { | |
227 | while (*str) | |
228 | { | |
229 | if (*str == chr) | |
230 | return (char *) str; | |
231 | str++; | |
232 | } | |
233 | return 0; | |
234 | } | |
235 | ||
236 | /* If using GCC, we can safely declare strlen this way. | |
237 | If not using GCC, it is ok not to declare it. */ | |
238 | #ifdef __GNUC__ | |
239 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | |
240 | That was relevant to code that was here before. */ | |
241 | # if (!defined __STDC__ || !__STDC__) && !defined strlen | |
242 | /* gcc with -traditional declares the built-in strlen to return int, | |
243 | and has done so at least since version 2.4.5. -- rms. */ | |
244 | extern int strlen (const char *); | |
245 | # endif /* not __STDC__ */ | |
246 | #endif /* __GNUC__ */ | |
247 | ||
248 | #endif /* not __GNU_LIBRARY__ */ | |
249 | \f | |
250 | /* Handle permutation of arguments. */ | |
251 | ||
252 | /* Describe the part of ARGV that contains non-options that have | |
253 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | |
254 | `last_nonopt' is the index after the last of them. */ | |
255 | ||
256 | static int first_nonopt; | |
257 | static int last_nonopt; | |
258 | ||
259 | #ifdef _LIBC | |
260 | /* Stored original parameters. | |
261 | XXX This is no good solution. We should rather copy the args so | |
262 | that we can compare them later. But we must not use malloc(3). */ | |
263 | extern int __libc_argc; | |
264 | extern char **__libc_argv; | |
265 | ||
266 | /* Bash 2.0 gives us an environment variable containing flags | |
267 | indicating ARGV elements that should not be considered arguments. */ | |
268 | ||
269 | # ifdef USE_NONOPTION_FLAGS | |
270 | /* Defined in getopt_init.c */ | |
271 | extern char *__getopt_nonoption_flags; | |
272 | ||
273 | static int nonoption_flags_max_len; | |
274 | static int nonoption_flags_len; | |
275 | # endif | |
276 | ||
277 | # ifdef USE_NONOPTION_FLAGS | |
278 | # define SWAP_FLAGS(ch1, ch2) \ | |
279 | if (nonoption_flags_len > 0) \ | |
280 | { \ | |
281 | char __tmp = __getopt_nonoption_flags[ch1]; \ | |
282 | __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ | |
283 | __getopt_nonoption_flags[ch2] = __tmp; \ | |
284 | } | |
285 | # else | |
286 | # define SWAP_FLAGS(ch1, ch2) | |
287 | # endif | |
288 | #else /* !_LIBC */ | |
289 | # define SWAP_FLAGS(ch1, ch2) | |
290 | #endif /* _LIBC */ | |
291 | ||
292 | /* Exchange two adjacent subsequences of ARGV. | |
293 | One subsequence is elements [first_nonopt,last_nonopt) | |
294 | which contains all the non-options that have been skipped so far. | |
295 | The other is elements [last_nonopt,optind), which contains all | |
296 | the options processed since those non-options were skipped. | |
297 | ||
298 | `first_nonopt' and `last_nonopt' are relocated so that they describe | |
299 | the new indices of the non-options in ARGV after they are moved. */ | |
300 | ||
301 | #if defined __STDC__ && __STDC__ | |
302 | static void exchange (char **); | |
303 | #endif | |
304 | ||
305 | static void | |
306 | exchange (argv) | |
307 | char **argv; | |
308 | { | |
309 | int bottom = first_nonopt; | |
310 | int middle = last_nonopt; | |
311 | int top = optind; | |
312 | char *tem; | |
313 | ||
314 | /* Exchange the shorter segment with the far end of the longer segment. | |
315 | That puts the shorter segment into the right place. | |
316 | It leaves the longer segment in the right place overall, | |
317 | but it consists of two parts that need to be swapped next. */ | |
318 | ||
319 | #if defined _LIBC && defined USE_NONOPTION_FLAGS | |
320 | /* First make sure the handling of the `__getopt_nonoption_flags' | |
321 | string can work normally. Our top argument must be in the range | |
322 | of the string. */ | |
323 | if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) | |
324 | { | |
325 | /* We must extend the array. The user plays games with us and | |
326 | presents new arguments. */ | |
327 | char *new_str = malloc (top + 1); | |
328 | if (new_str == NULL) | |
329 | nonoption_flags_len = nonoption_flags_max_len = 0; | |
330 | else | |
331 | { | |
332 | memset (__mempcpy (new_str, __getopt_nonoption_flags, | |
333 | nonoption_flags_max_len), | |
334 | '\0', top + 1 - nonoption_flags_max_len); | |
335 | nonoption_flags_max_len = top + 1; | |
336 | __getopt_nonoption_flags = new_str; | |
337 | } | |
338 | } | |
339 | #endif | |
340 | ||
341 | while (top > middle && middle > bottom) | |
342 | { | |
343 | if (top - middle > middle - bottom) | |
344 | { | |
345 | /* Bottom segment is the short one. */ | |
346 | int len = middle - bottom; | |
347 | register int i; | |
348 | ||
349 | /* Swap it with the top part of the top segment. */ | |
350 | for (i = 0; i < len; i++) | |
351 | { | |
352 | tem = argv[bottom + i]; | |
353 | argv[bottom + i] = argv[top - (middle - bottom) + i]; | |
354 | argv[top - (middle - bottom) + i] = tem; | |
355 | SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); | |
356 | } | |
357 | /* Exclude the moved bottom segment from further swapping. */ | |
358 | top -= len; | |
359 | } | |
360 | else | |
361 | { | |
362 | /* Top segment is the short one. */ | |
363 | int len = top - middle; | |
364 | register int i; | |
365 | ||
366 | /* Swap it with the bottom part of the bottom segment. */ | |
367 | for (i = 0; i < len; i++) | |
368 | { | |
369 | tem = argv[bottom + i]; | |
370 | argv[bottom + i] = argv[middle + i]; | |
371 | argv[middle + i] = tem; | |
372 | SWAP_FLAGS (bottom + i, middle + i); | |
373 | } | |
374 | /* Exclude the moved top segment from further swapping. */ | |
375 | bottom += len; | |
376 | } | |
377 | } | |
378 | ||
379 | /* Update records for the slots the non-options now occupy. */ | |
380 | ||
381 | first_nonopt += (optind - last_nonopt); | |
382 | last_nonopt = optind; | |
383 | } | |
384 | ||
385 | /* Initialize the internal data when the first call is made. */ | |
386 | ||
387 | #if defined __STDC__ && __STDC__ | |
388 | static const char *_getopt_initialize (int, char *const *, const char *); | |
389 | #endif | |
390 | static const char * | |
391 | _getopt_initialize (argc, argv, optstring) | |
392 | int argc; | |
393 | char *const *argv; | |
394 | const char *optstring; | |
395 | { | |
396 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 | |
397 | is the program name); the sequence of previously skipped | |
398 | non-option ARGV-elements is empty. */ | |
399 | ||
400 | first_nonopt = last_nonopt = optind; | |
401 | ||
402 | nextchar = NULL; | |
403 | ||
404 | posixly_correct = getenv ("POSIXLY_CORRECT"); | |
405 | ||
406 | /* Determine how to handle the ordering of options and nonoptions. */ | |
407 | ||
408 | if (optstring[0] == '-') | |
409 | { | |
410 | ordering = RETURN_IN_ORDER; | |
411 | ++optstring; | |
412 | } | |
413 | else if (optstring[0] == '+') | |
414 | { | |
415 | ordering = REQUIRE_ORDER; | |
416 | ++optstring; | |
417 | } | |
418 | else if (posixly_correct != NULL) | |
419 | ordering = REQUIRE_ORDER; | |
420 | else | |
421 | ordering = PERMUTE; | |
422 | ||
423 | #if defined _LIBC && defined USE_NONOPTION_FLAGS | |
424 | if (posixly_correct == NULL | |
425 | && argc == __libc_argc && argv == __libc_argv) | |
426 | { | |
427 | if (nonoption_flags_max_len == 0) | |
428 | { | |
429 | if (__getopt_nonoption_flags == NULL | |
430 | || __getopt_nonoption_flags[0] == '\0') | |
431 | nonoption_flags_max_len = -1; | |
432 | else | |
433 | { | |
434 | const char *orig_str = __getopt_nonoption_flags; | |
435 | int len = nonoption_flags_max_len = strlen (orig_str); | |
436 | if (nonoption_flags_max_len < argc) | |
437 | nonoption_flags_max_len = argc; | |
438 | __getopt_nonoption_flags = | |
439 | (char *) malloc (nonoption_flags_max_len); | |
440 | if (__getopt_nonoption_flags == NULL) | |
441 | nonoption_flags_max_len = -1; | |
442 | else | |
443 | memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), | |
444 | '\0', nonoption_flags_max_len - len); | |
445 | } | |
446 | } | |
447 | nonoption_flags_len = nonoption_flags_max_len; | |
448 | } | |
449 | else | |
450 | nonoption_flags_len = 0; | |
451 | #endif | |
452 | ||
453 | return optstring; | |
454 | } | |
455 | \f | |
456 | /* Scan elements of ARGV (whose length is ARGC) for option characters | |
457 | given in OPTSTRING. | |
458 | ||
459 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | |
460 | then it is an option element. The characters of this element | |
461 | (aside from the initial '-') are option characters. If `getopt' | |
462 | is called repeatedly, it returns successively each of the option characters | |
463 | from each of the option elements. | |
464 | ||
465 | If `getopt' finds another option character, it returns that character, | |
466 | updating `optind' and `nextchar' so that the next call to `getopt' can | |
467 | resume the scan with the following option character or ARGV-element. | |
468 | ||
469 | If there are no more option characters, `getopt' returns -1. | |
470 | Then `optind' is the index in ARGV of the first ARGV-element | |
471 | that is not an option. (The ARGV-elements have been permuted | |
472 | so that those that are not options now come last.) | |
473 | ||
474 | OPTSTRING is a string containing the legitimate option characters. | |
475 | If an option character is seen that is not listed in OPTSTRING, | |
476 | return '?' after printing an error message. If you set `opterr' to | |
477 | zero, the error message is suppressed but we still return '?'. | |
478 | ||
479 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | |
480 | so the following text in the same ARGV-element, or the text of the following | |
481 | ARGV-element, is returned in `optarg'. Two colons mean an option that | |
482 | wants an optional arg; if there is text in the current ARGV-element, | |
483 | it is returned in `optarg', otherwise `optarg' is set to zero. | |
484 | ||
485 | If OPTSTRING starts with `-' or `+', it requests different methods of | |
486 | handling the non-option ARGV-elements. | |
487 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | |
488 | ||
489 | Long-named options begin with `--' instead of `-'. | |
490 | Their names may be abbreviated as long as the abbreviation is unique | |
491 | or is an exact match for some defined option. If they have an | |
492 | argument, it follows the option name in the same ARGV-element, separated | |
493 | from the option name by a `=', or else the in next ARGV-element. | |
494 | When `getopt' finds a long-named option, it returns 0 if that option's | |
495 | `flag' field is nonzero, the value of the option's `val' field | |
496 | if the `flag' field is zero. | |
497 | ||
498 | The elements of ARGV aren't really const, because we permute them. | |
499 | But we pretend they're const in the prototype to be compatible | |
500 | with other systems. | |
501 | ||
502 | LONGOPTS is a vector of `struct option' terminated by an | |
503 | element containing a name which is zero. | |
504 | ||
505 | LONGIND returns the index in LONGOPT of the long-named option found. | |
506 | It is only valid when a long-named option has been found by the most | |
507 | recent call. | |
508 | ||
509 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | |
510 | long-named options. */ | |
511 | ||
512 | int | |
513 | _getopt_internal (argc, argv, optstring, longopts, longind, long_only) | |
514 | int argc; | |
515 | char *const *argv; | |
516 | const char *optstring; | |
517 | const struct option *longopts; | |
518 | int *longind; | |
519 | int long_only; | |
520 | { | |
521 | int print_errors = opterr; | |
522 | if (optstring[0] == ':') | |
523 | print_errors = 0; | |
524 | ||
525 | if (argc < 1) | |
526 | return -1; | |
527 | ||
528 | optarg = NULL; | |
529 | ||
530 | if (optind == 0 || !__getopt_initialized) | |
531 | { | |
532 | if (optind == 0) | |
533 | optind = 1; /* Don't scan ARGV[0], the program name. */ | |
534 | optstring = _getopt_initialize (argc, argv, optstring); | |
535 | __getopt_initialized = 1; | |
536 | } | |
537 | ||
538 | /* Test whether ARGV[optind] points to a non-option argument. | |
539 | Either it does not have option syntax, or there is an environment flag | |
540 | from the shell indicating it is not an option. The later information | |
541 | is only used when the used in the GNU libc. */ | |
542 | #if defined _LIBC && defined USE_NONOPTION_FLAGS | |
543 | # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ | |
544 | || (optind < nonoption_flags_len \ | |
545 | && __getopt_nonoption_flags[optind] == '1')) | |
546 | #else | |
547 | # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') | |
548 | #endif | |
549 | ||
550 | if (nextchar == NULL || *nextchar == '\0') | |
551 | { | |
552 | /* Advance to the next ARGV-element. */ | |
553 | ||
554 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been | |
555 | moved back by the user (who may also have changed the arguments). */ | |
556 | if (last_nonopt > optind) | |
557 | last_nonopt = optind; | |
558 | if (first_nonopt > optind) | |
559 | first_nonopt = optind; | |
560 | ||
561 | if (ordering == PERMUTE) | |
562 | { | |
563 | /* If we have just processed some options following some non-options, | |
564 | exchange them so that the options come first. */ | |
565 | ||
566 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
567 | exchange ((char **) argv); | |
568 | else if (last_nonopt != optind) | |
569 | first_nonopt = optind; | |
570 | ||
571 | /* Skip any additional non-options | |
572 | and extend the range of non-options previously skipped. */ | |
573 | ||
574 | while (optind < argc && NONOPTION_P) | |
575 | optind++; | |
576 | last_nonopt = optind; | |
577 | } | |
578 | ||
579 | /* The special ARGV-element `--' means premature end of options. | |
580 | Skip it like a null option, | |
581 | then exchange with previous non-options as if it were an option, | |
582 | then skip everything else like a non-option. */ | |
583 | ||
584 | if (optind != argc && !strcmp (argv[optind], "--")) | |
585 | { | |
586 | optind++; | |
587 | ||
588 | if (first_nonopt != last_nonopt && last_nonopt != optind) | |
589 | exchange ((char **) argv); | |
590 | else if (first_nonopt == last_nonopt) | |
591 | first_nonopt = optind; | |
592 | last_nonopt = argc; | |
593 | ||
594 | optind = argc; | |
595 | } | |
596 | ||
597 | /* If we have done all the ARGV-elements, stop the scan | |
598 | and back over any non-options that we skipped and permuted. */ | |
599 | ||
600 | if (optind == argc) | |
601 | { | |
602 | /* Set the next-arg-index to point at the non-options | |
603 | that we previously skipped, so the caller will digest them. */ | |
604 | if (first_nonopt != last_nonopt) | |
605 | optind = first_nonopt; | |
606 | return -1; | |
607 | } | |
608 | ||
609 | /* If we have come to a non-option and did not permute it, | |
610 | either stop the scan or describe it to the caller and pass it by. */ | |
611 | ||
612 | if (NONOPTION_P) | |
613 | { | |
614 | if (ordering == REQUIRE_ORDER) | |
615 | return -1; | |
616 | optarg = argv[optind++]; | |
617 | return 1; | |
618 | } | |
619 | ||
620 | /* We have found another option-ARGV-element. | |
621 | Skip the initial punctuation. */ | |
622 | ||
623 | nextchar = (argv[optind] + 1 | |
624 | + (longopts != NULL && argv[optind][1] == '-')); | |
625 | } | |
626 | ||
627 | /* Decode the current option-ARGV-element. */ | |
628 | ||
629 | /* Check whether the ARGV-element is a long option. | |
630 | ||
631 | If long_only and the ARGV-element has the form "-f", where f is | |
632 | a valid short option, don't consider it an abbreviated form of | |
633 | a long option that starts with f. Otherwise there would be no | |
634 | way to give the -f short option. | |
635 | ||
636 | On the other hand, if there's a long option "fubar" and | |
637 | the ARGV-element is "-fu", do consider that an abbreviation of | |
638 | the long option, just like "--fu", and not "-f" with arg "u". | |
639 | ||
640 | This distinction seems to be the most useful approach. */ | |
641 | ||
642 | if (longopts != NULL | |
643 | && (argv[optind][1] == '-' | |
644 | || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) | |
645 | { | |
646 | char *nameend; | |
647 | const struct option *p; | |
648 | const struct option *pfound = NULL; | |
649 | int exact = 0; | |
650 | int ambig = 0; | |
651 | int indfound = -1; | |
652 | int option_index; | |
653 | ||
654 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | |
655 | /* Do nothing. */ ; | |
656 | ||
657 | /* Test all long options for either exact match | |
658 | or abbreviated matches. */ | |
659 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
660 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
661 | { | |
662 | if ((unsigned int) (nameend - nextchar) | |
663 | == (unsigned int) strlen (p->name)) | |
664 | { | |
665 | /* Exact match found. */ | |
666 | pfound = p; | |
667 | indfound = option_index; | |
668 | exact = 1; | |
669 | break; | |
670 | } | |
671 | else if (pfound == NULL) | |
672 | { | |
673 | /* First nonexact match found. */ | |
674 | pfound = p; | |
675 | indfound = option_index; | |
676 | } | |
677 | else if (long_only | |
678 | || pfound->has_arg != p->has_arg | |
679 | || pfound->flag != p->flag | |
680 | || pfound->val != p->val) | |
681 | /* Second or later nonexact match found. */ | |
682 | ambig = 1; | |
683 | } | |
684 | ||
685 | if (ambig && !exact) | |
686 | { | |
687 | if (print_errors) | |
688 | { | |
689 | #if defined _LIBC && defined USE_IN_LIBIO | |
690 | char *buf; | |
691 | ||
692 | if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"), | |
693 | argv[0], argv[optind]) >= 0) | |
694 | { | |
695 | ||
696 | if (_IO_fwide (stderr, 0) > 0) | |
697 | __fwprintf (stderr, L"%s", buf); | |
698 | else | |
699 | fputs (buf, stderr); | |
700 | ||
701 | free (buf); | |
702 | } | |
703 | #else | |
704 | fprintf (stderr, _("%s: option `%s' is ambiguous\n"), | |
705 | argv[0], argv[optind]); | |
706 | #endif | |
707 | } | |
708 | nextchar += strlen (nextchar); | |
709 | optind++; | |
710 | optopt = 0; | |
711 | return '?'; | |
712 | } | |
713 | ||
714 | if (pfound != NULL) | |
715 | { | |
716 | option_index = indfound; | |
717 | optind++; | |
718 | if (*nameend) | |
719 | { | |
720 | /* Don't test has_arg with >, because some C compilers don't | |
721 | allow it to be used on enums. */ | |
722 | if (pfound->has_arg) | |
723 | optarg = nameend + 1; | |
724 | else | |
725 | { | |
726 | if (print_errors) | |
727 | { | |
728 | #if defined _LIBC && defined USE_IN_LIBIO | |
729 | char *buf; | |
730 | int n; | |
731 | #endif | |
732 | ||
733 | if (argv[optind - 1][1] == '-') | |
734 | { | |
735 | /* --option */ | |
736 | #if defined _LIBC && defined USE_IN_LIBIO | |
737 | n = __asprintf (&buf, _("\ | |
738 | %s: option `--%s' doesn't allow an argument\n"), | |
739 | argv[0], pfound->name); | |
740 | #else | |
741 | fprintf (stderr, _("\ | |
742 | %s: option `--%s' doesn't allow an argument\n"), | |
743 | argv[0], pfound->name); | |
744 | #endif | |
745 | } | |
746 | else | |
747 | { | |
748 | /* +option or -option */ | |
749 | #if defined _LIBC && defined USE_IN_LIBIO | |
750 | n = __asprintf (&buf, _("\ | |
751 | %s: option `%c%s' doesn't allow an argument\n"), | |
752 | argv[0], argv[optind - 1][0], | |
753 | pfound->name); | |
754 | #else | |
755 | fprintf (stderr, _("\ | |
756 | %s: option `%c%s' doesn't allow an argument\n"), | |
757 | argv[0], argv[optind - 1][0], pfound->name); | |
758 | #endif | |
759 | } | |
760 | ||
761 | #if defined _LIBC && defined USE_IN_LIBIO | |
762 | if (n >= 0) | |
763 | { | |
764 | if (_IO_fwide (stderr, 0) > 0) | |
765 | __fwprintf (stderr, L"%s", buf); | |
766 | else | |
767 | fputs (buf, stderr); | |
768 | ||
769 | free (buf); | |
770 | } | |
771 | #endif | |
772 | } | |
773 | ||
774 | nextchar += strlen (nextchar); | |
775 | ||
776 | optopt = pfound->val; | |
777 | return '?'; | |
778 | } | |
779 | } | |
780 | else if (pfound->has_arg == 1) | |
781 | { | |
782 | if (optind < argc) | |
783 | optarg = argv[optind++]; | |
784 | else | |
785 | { | |
786 | if (print_errors) | |
787 | { | |
788 | #if defined _LIBC && defined USE_IN_LIBIO | |
789 | char *buf; | |
790 | ||
791 | if (__asprintf (&buf, _("\ | |
792 | %s: option `%s' requires an argument\n"), | |
793 | argv[0], argv[optind - 1]) >= 0) | |
794 | { | |
795 | if (_IO_fwide (stderr, 0) > 0) | |
796 | __fwprintf (stderr, L"%s", buf); | |
797 | else | |
798 | fputs (buf, stderr); | |
799 | ||
800 | free (buf); | |
801 | } | |
802 | #else | |
803 | fprintf (stderr, | |
804 | _("%s: option `%s' requires an argument\n"), | |
805 | argv[0], argv[optind - 1]); | |
806 | #endif | |
807 | } | |
808 | nextchar += strlen (nextchar); | |
809 | optopt = pfound->val; | |
810 | return optstring[0] == ':' ? ':' : '?'; | |
811 | } | |
812 | } | |
813 | nextchar += strlen (nextchar); | |
814 | if (longind != NULL) | |
815 | *longind = option_index; | |
816 | if (pfound->flag) | |
817 | { | |
818 | *(pfound->flag) = pfound->val; | |
819 | return 0; | |
820 | } | |
821 | return pfound->val; | |
822 | } | |
823 | ||
824 | /* Can't find it as a long option. If this is not getopt_long_only, | |
825 | or the option starts with '--' or is not a valid short | |
826 | option, then it's an error. | |
827 | Otherwise interpret it as a short option. */ | |
828 | if (!long_only || argv[optind][1] == '-' | |
829 | || my_index (optstring, *nextchar) == NULL) | |
830 | { | |
831 | if (print_errors) | |
832 | { | |
833 | #if defined _LIBC && defined USE_IN_LIBIO | |
834 | char *buf; | |
835 | int n; | |
836 | #endif | |
837 | ||
838 | if (argv[optind][1] == '-') | |
839 | { | |
840 | /* --option */ | |
841 | #if defined _LIBC && defined USE_IN_LIBIO | |
842 | n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"), | |
843 | argv[0], nextchar); | |
844 | #else | |
845 | fprintf (stderr, _("%s: unrecognized option `--%s'\n"), | |
846 | argv[0], nextchar); | |
847 | #endif | |
848 | } | |
849 | else | |
850 | { | |
851 | /* +option or -option */ | |
852 | #if defined _LIBC && defined USE_IN_LIBIO | |
853 | n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"), | |
854 | argv[0], argv[optind][0], nextchar); | |
855 | #else | |
856 | fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), | |
857 | argv[0], argv[optind][0], nextchar); | |
858 | #endif | |
859 | } | |
860 | ||
861 | #if defined _LIBC && defined USE_IN_LIBIO | |
862 | if (n >= 0) | |
863 | { | |
864 | if (_IO_fwide (stderr, 0) > 0) | |
865 | __fwprintf (stderr, L"%s", buf); | |
866 | else | |
867 | fputs (buf, stderr); | |
868 | ||
869 | free (buf); | |
870 | } | |
871 | #endif | |
872 | } | |
873 | nextchar = (char *) ""; | |
874 | optind++; | |
875 | optopt = 0; | |
876 | return '?'; | |
877 | } | |
878 | } | |
879 | ||
880 | /* Look at and handle the next short option-character. */ | |
881 | ||
882 | { | |
883 | char c = *nextchar++; | |
884 | char *temp = my_index (optstring, c); | |
885 | ||
886 | /* Increment `optind' when we start to process its last character. */ | |
887 | if (*nextchar == '\0') | |
888 | ++optind; | |
889 | ||
890 | if (temp == NULL || c == ':') | |
891 | { | |
892 | if (print_errors) | |
893 | { | |
894 | #if defined _LIBC && defined USE_IN_LIBIO | |
895 | char *buf; | |
896 | int n; | |
897 | #endif | |
898 | ||
899 | if (posixly_correct) | |
900 | { | |
901 | /* 1003.2 specifies the format of this message. */ | |
902 | #if defined _LIBC && defined USE_IN_LIBIO | |
903 | n = __asprintf (&buf, _("%s: illegal option -- %c\n"), | |
904 | argv[0], c); | |
905 | #else | |
906 | fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c); | |
907 | #endif | |
908 | } | |
909 | else | |
910 | { | |
911 | #if defined _LIBC && defined USE_IN_LIBIO | |
912 | n = __asprintf (&buf, _("%s: invalid option -- %c\n"), | |
913 | argv[0], c); | |
914 | #else | |
915 | fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c); | |
916 | #endif | |
917 | } | |
918 | ||
919 | #if defined _LIBC && defined USE_IN_LIBIO | |
920 | if (n >= 0) | |
921 | { | |
922 | if (_IO_fwide (stderr, 0) > 0) | |
923 | __fwprintf (stderr, L"%s", buf); | |
924 | else | |
925 | fputs (buf, stderr); | |
926 | ||
927 | free (buf); | |
928 | } | |
929 | #endif | |
930 | } | |
931 | optopt = c; | |
932 | return '?'; | |
933 | } | |
934 | /* Convenience. Treat POSIX -W foo same as long option --foo */ | |
935 | if (temp[0] == 'W' && temp[1] == ';') | |
936 | { | |
937 | char *nameend; | |
938 | const struct option *p; | |
939 | const struct option *pfound = NULL; | |
940 | int exact = 0; | |
941 | int ambig = 0; | |
942 | int indfound = 0; | |
943 | int option_index; | |
944 | ||
945 | /* This is an option that requires an argument. */ | |
946 | if (*nextchar != '\0') | |
947 | { | |
948 | optarg = nextchar; | |
949 | /* If we end this ARGV-element by taking the rest as an arg, | |
950 | we must advance to the next element now. */ | |
951 | optind++; | |
952 | } | |
953 | else if (optind == argc) | |
954 | { | |
955 | if (print_errors) | |
956 | { | |
957 | /* 1003.2 specifies the format of this message. */ | |
958 | #if defined _LIBC && defined USE_IN_LIBIO | |
959 | char *buf; | |
960 | ||
961 | if (__asprintf (&buf, | |
962 | _("%s: option requires an argument -- %c\n"), | |
963 | argv[0], c) >= 0) | |
964 | { | |
965 | if (_IO_fwide (stderr, 0) > 0) | |
966 | __fwprintf (stderr, L"%s", buf); | |
967 | else | |
968 | fputs (buf, stderr); | |
969 | ||
970 | free (buf); | |
971 | } | |
972 | #else | |
973 | fprintf (stderr, _("%s: option requires an argument -- %c\n"), | |
974 | argv[0], c); | |
975 | #endif | |
976 | } | |
977 | optopt = c; | |
978 | if (optstring[0] == ':') | |
979 | c = ':'; | |
980 | else | |
981 | c = '?'; | |
982 | return c; | |
983 | } | |
984 | else | |
985 | /* We already incremented `optind' once; | |
986 | increment it again when taking next ARGV-elt as argument. */ | |
987 | optarg = argv[optind++]; | |
988 | ||
989 | /* optarg is now the argument, see if it's in the | |
990 | table of longopts. */ | |
991 | ||
992 | for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) | |
993 | /* Do nothing. */ ; | |
994 | ||
995 | /* Test all long options for either exact match | |
996 | or abbreviated matches. */ | |
997 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | |
998 | if (!strncmp (p->name, nextchar, nameend - nextchar)) | |
999 | { | |
1000 | if ((unsigned int) (nameend - nextchar) == strlen (p->name)) | |
1001 | { | |
1002 | /* Exact match found. */ | |
1003 | pfound = p; | |
1004 | indfound = option_index; | |
1005 | exact = 1; | |
1006 | break; | |
1007 | } | |
1008 | else if (pfound == NULL) | |
1009 | { | |
1010 | /* First nonexact match found. */ | |
1011 | pfound = p; | |
1012 | indfound = option_index; | |
1013 | } | |
1014 | else | |
1015 | /* Second or later nonexact match found. */ | |
1016 | ambig = 1; | |
1017 | } | |
1018 | if (ambig && !exact) | |
1019 | { | |
1020 | if (print_errors) | |
1021 | { | |
1022 | #if defined _LIBC && defined USE_IN_LIBIO | |
1023 | char *buf; | |
1024 | ||
1025 | if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"), | |
1026 | argv[0], argv[optind]) >= 0) | |
1027 | { | |
1028 | if (_IO_fwide (stderr, 0) > 0) | |
1029 | __fwprintf (stderr, L"%s", buf); | |
1030 | else | |
1031 | fputs (buf, stderr); | |
1032 | ||
1033 | free (buf); | |
1034 | } | |
1035 | #else | |
1036 | fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), | |
1037 | argv[0], argv[optind]); | |
1038 | #endif | |
1039 | } | |
1040 | nextchar += strlen (nextchar); | |
1041 | optind++; | |
1042 | return '?'; | |
1043 | } | |
1044 | if (pfound != NULL) | |
1045 | { | |
1046 | option_index = indfound; | |
1047 | if (*nameend) | |
1048 | { | |
1049 | /* Don't test has_arg with >, because some C compilers don't | |
1050 | allow it to be used on enums. */ | |
1051 | if (pfound->has_arg) | |
1052 | optarg = nameend + 1; | |
1053 | else | |
1054 | { | |
1055 | if (print_errors) | |
1056 | { | |
1057 | #if defined _LIBC && defined USE_IN_LIBIO | |
1058 | char *buf; | |
1059 | ||
1060 | if (__asprintf (&buf, _("\ | |
1061 | %s: option `-W %s' doesn't allow an argument\n"), | |
1062 | argv[0], pfound->name) >= 0) | |
1063 | { | |
1064 | if (_IO_fwide (stderr, 0) > 0) | |
1065 | __fwprintf (stderr, L"%s", buf); | |
1066 | else | |
1067 | fputs (buf, stderr); | |
1068 | ||
1069 | free (buf); | |
1070 | } | |
1071 | #else | |
1072 | fprintf (stderr, _("\ | |
1073 | %s: option `-W %s' doesn't allow an argument\n"), | |
1074 | argv[0], pfound->name); | |
1075 | #endif | |
1076 | } | |
1077 | ||
1078 | nextchar += strlen (nextchar); | |
1079 | return '?'; | |
1080 | } | |
1081 | } | |
1082 | else if (pfound->has_arg == 1) | |
1083 | { | |
1084 | if (optind < argc) | |
1085 | optarg = argv[optind++]; | |
1086 | else | |
1087 | { | |
1088 | if (print_errors) | |
1089 | { | |
1090 | #if defined _LIBC && defined USE_IN_LIBIO | |
1091 | char *buf; | |
1092 | ||
1093 | if (__asprintf (&buf, _("\ | |
1094 | %s: option `%s' requires an argument\n"), | |
1095 | argv[0], argv[optind - 1]) >= 0) | |
1096 | { | |
1097 | if (_IO_fwide (stderr, 0) > 0) | |
1098 | __fwprintf (stderr, L"%s", buf); | |
1099 | else | |
1100 | fputs (buf, stderr); | |
1101 | ||
1102 | free (buf); | |
1103 | } | |
1104 | #else | |
1105 | fprintf (stderr, | |
1106 | _("%s: option `%s' requires an argument\n"), | |
1107 | argv[0], argv[optind - 1]); | |
1108 | #endif | |
1109 | } | |
1110 | nextchar += strlen (nextchar); | |
1111 | return optstring[0] == ':' ? ':' : '?'; | |
1112 | } | |
1113 | } | |
1114 | nextchar += strlen (nextchar); | |
1115 | if (longind != NULL) | |
1116 | *longind = option_index; | |
1117 | if (pfound->flag) | |
1118 | { | |
1119 | *(pfound->flag) = pfound->val; | |
1120 | return 0; | |
1121 | } | |
1122 | return pfound->val; | |
1123 | } | |
1124 | nextchar = NULL; | |
1125 | return 'W'; /* Let the application handle it. */ | |
1126 | } | |
1127 | if (temp[1] == ':') | |
1128 | { | |
1129 | if (temp[2] == ':') | |
1130 | { | |
1131 | /* This is an option that accepts an argument optionally. */ | |
1132 | if (*nextchar != '\0') | |
1133 | { | |
1134 | optarg = nextchar; | |
1135 | optind++; | |
1136 | } | |
1137 | else | |
1138 | optarg = NULL; | |
1139 | nextchar = NULL; | |
1140 | } | |
1141 | else | |
1142 | { | |
1143 | /* This is an option that requires an argument. */ | |
1144 | if (*nextchar != '\0') | |
1145 | { | |
1146 | optarg = nextchar; | |
1147 | /* If we end this ARGV-element by taking the rest as an arg, | |
1148 | we must advance to the next element now. */ | |
1149 | optind++; | |
1150 | } | |
1151 | else if (optind == argc) | |
1152 | { | |
1153 | if (print_errors) | |
1154 | { | |
1155 | /* 1003.2 specifies the format of this message. */ | |
1156 | #if defined _LIBC && defined USE_IN_LIBIO | |
1157 | char *buf; | |
1158 | ||
1159 | if (__asprintf (&buf, _("\ | |
1160 | %s: option requires an argument -- %c\n"), | |
1161 | argv[0], c) >= 0) | |
1162 | { | |
1163 | if (_IO_fwide (stderr, 0) > 0) | |
1164 | __fwprintf (stderr, L"%s", buf); | |
1165 | else | |
1166 | fputs (buf, stderr); | |
1167 | ||
1168 | free (buf); | |
1169 | } | |
1170 | #else | |
1171 | fprintf (stderr, | |
1172 | _("%s: option requires an argument -- %c\n"), | |
1173 | argv[0], c); | |
1174 | #endif | |
1175 | } | |
1176 | optopt = c; | |
1177 | if (optstring[0] == ':') | |
1178 | c = ':'; | |
1179 | else | |
1180 | c = '?'; | |
1181 | } | |
1182 | else | |
1183 | /* We already incremented `optind' once; | |
1184 | increment it again when taking next ARGV-elt as argument. */ | |
1185 | optarg = argv[optind++]; | |
1186 | nextchar = NULL; | |
1187 | } | |
1188 | } | |
1189 | return c; | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | int | |
1194 | getopt (argc, argv, optstring) | |
1195 | int argc; | |
1196 | char *const *argv; | |
1197 | const char *optstring; | |
1198 | { | |
1199 | return _getopt_internal (argc, argv, optstring, | |
1200 | (const struct option *) 0, | |
1201 | (int *) 0, | |
1202 | 0); | |
1203 | } | |
1204 | ||
1205 | #endif /* Not ELIDE_CODE. */ | |
1206 | \f | |
1207 | #ifdef TEST | |
1208 | ||
1209 | /* Compile with -DTEST to make an executable for use in testing | |
1210 | the above definition of `getopt'. */ | |
1211 | ||
1212 | int | |
1213 | main (argc, argv) | |
1214 | int argc; | |
1215 | char **argv; | |
1216 | { | |
1217 | int c; | |
1218 | int digit_optind = 0; | |
1219 | ||
1220 | while (1) | |
1221 | { | |
1222 | int this_option_optind = optind ? optind : 1; | |
1223 | ||
1224 | c = getopt (argc, argv, "abc:d:0123456789"); | |
1225 | if (c == -1) | |
1226 | break; | |
1227 | ||
1228 | switch (c) | |
1229 | { | |
1230 | case '0': | |
1231 | case '1': | |
1232 | case '2': | |
1233 | case '3': | |
1234 | case '4': | |
1235 | case '5': | |
1236 | case '6': | |
1237 | case '7': | |
1238 | case '8': | |
1239 | case '9': | |
1240 | if (digit_optind != 0 && digit_optind != this_option_optind) | |
1241 | printf ("digits occur in two different argv-elements.\n"); | |
1242 | digit_optind = this_option_optind; | |
1243 | printf ("option %c\n", c); | |
1244 | break; | |
1245 | ||
1246 | case 'a': | |
1247 | printf ("option a\n"); | |
1248 | break; | |
1249 | ||
1250 | case 'b': | |
1251 | printf ("option b\n"); | |
1252 | break; | |
1253 | ||
1254 | case 'c': | |
1255 | printf ("option c with value `%s'\n", optarg); | |
1256 | break; | |
1257 | ||
1258 | case '?': | |
1259 | break; | |
1260 | ||
1261 | default: | |
1262 | printf ("?? getopt returned character code 0%o ??\n", c); | |
1263 | } | |
1264 | } | |
1265 | ||
1266 | if (optind < argc) | |
1267 | { | |
1268 | printf ("non-option ARGV-elements: "); | |
1269 | while (optind < argc) | |
1270 | printf ("%s ", argv[optind++]); | |
1271 | printf ("\n"); | |
1272 | } | |
1273 | ||
1274 | exit (0); | |
1275 | } | |
1276 | ||
1277 | #endif /* TEST */ |