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