gvsig-raster / libjni-potrace / trunk / libjni-potrace / resources / potrace-1.8 / src / getopt.c @ 1780
History | View | Annotate | Download (29.6 KB)
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 |
|
6 |
Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
|
7 |
Free Software Foundation, Inc.
|
8 |
|
9 |
The GNU C Library is free software; you can redistribute it and/or
|
10 |
modify it under the terms of the GNU Library General Public License as
|
11 |
published by the Free Software Foundation; either version 2 of the
|
12 |
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 |
Library General Public License for more details.
|
18 |
|
19 |
You should have received a copy of the GNU Library General Public
|
20 |
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
21 |
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
22 |
Boston, MA 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 |
/* Bash 2.0 gives us an environment variable containing flags
|
254 |
indicating ARGV elements that should not be considered arguments. */
|
255 |
|
256 |
/* Defined in getopt_init.c */
|
257 |
extern char *__getopt_nonoption_flags; |
258 |
|
259 |
static int nonoption_flags_max_len; |
260 |
static int nonoption_flags_len; |
261 |
|
262 |
static int original_argc; |
263 |
static char *const *original_argv; |
264 |
|
265 |
/* Make sure the environment variable bash 2.0 puts in the environment
|
266 |
is valid for the getopt call we must make sure that the ARGV passed
|
267 |
to getopt is that one passed to the process. */
|
268 |
static void |
269 |
__attribute__ ((unused)) |
270 |
store_args_and_env (int argc, char *const *argv) |
271 |
{ |
272 |
/* XXX This is no good solution. We should rather copy the args so
|
273 |
that we can compare them later. But we must not use malloc(3). */
|
274 |
original_argc = argc; |
275 |
original_argv = argv; |
276 |
} |
277 |
# ifdef text_set_element
|
278 |
text_set_element (__libc_subinit, store_args_and_env); |
279 |
# endif /* text_set_element */ |
280 |
|
281 |
# define SWAP_FLAGS(ch1, ch2) \
|
282 |
if (nonoption_flags_len > 0) \ |
283 |
{ \ |
284 |
char __tmp = __getopt_nonoption_flags[ch1]; \
|
285 |
__getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ |
286 |
__getopt_nonoption_flags[ch2] = __tmp; \ |
287 |
} |
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 |
#ifdef _LIBC
|
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 |
#ifdef _LIBC
|
424 |
if (posixly_correct == NULL |
425 |
&& argc == original_argc && argv == original_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 |
|
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 |
#ifdef _LIBC
|
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 |
fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
|
689 |
argv[0], argv[optind]);
|
690 |
nextchar += strlen (nextchar); |
691 |
optind++; |
692 |
optopt = 0;
|
693 |
return '?'; |
694 |
} |
695 |
|
696 |
if (pfound != NULL) |
697 |
{ |
698 |
option_index = indfound; |
699 |
optind++; |
700 |
if (*nameend)
|
701 |
{ |
702 |
/* Don't test has_arg with >, because some C compilers don't
|
703 |
allow it to be used on enums. */
|
704 |
if (pfound->has_arg)
|
705 |
optarg = nameend + 1;
|
706 |
else
|
707 |
{ |
708 |
if (print_errors)
|
709 |
{ |
710 |
if (argv[optind - 1][1] == '-') |
711 |
/* --option */
|
712 |
fprintf (stderr, |
713 |
_("%s: option `--%s' doesn't allow an argument\n"),
|
714 |
argv[0], pfound->name);
|
715 |
else
|
716 |
/* +option or -option */
|
717 |
fprintf (stderr, |
718 |
_("%s: option `%c%s' doesn't allow an argument\n"),
|
719 |
argv[0], argv[optind - 1][0], pfound->name); |
720 |
} |
721 |
|
722 |
nextchar += strlen (nextchar); |
723 |
|
724 |
optopt = pfound->val; |
725 |
return '?'; |
726 |
} |
727 |
} |
728 |
else if (pfound->has_arg == 1) |
729 |
{ |
730 |
if (optind < argc)
|
731 |
optarg = argv[optind++]; |
732 |
else
|
733 |
{ |
734 |
if (print_errors)
|
735 |
fprintf (stderr, |
736 |
_("%s: option `%s' requires an argument\n"),
|
737 |
argv[0], argv[optind - 1]); |
738 |
nextchar += strlen (nextchar); |
739 |
optopt = pfound->val; |
740 |
return optstring[0] == ':' ? ':' : '?'; |
741 |
} |
742 |
} |
743 |
nextchar += strlen (nextchar); |
744 |
if (longind != NULL) |
745 |
*longind = option_index; |
746 |
if (pfound->flag)
|
747 |
{ |
748 |
*(pfound->flag) = pfound->val; |
749 |
return 0; |
750 |
} |
751 |
return pfound->val;
|
752 |
} |
753 |
|
754 |
/* Can't find it as a long option. If this is not getopt_long_only,
|
755 |
or the option starts with '--' or is not a valid short
|
756 |
option, then it's an error.
|
757 |
Otherwise interpret it as a short option. */
|
758 |
if (!long_only || argv[optind][1] == '-' |
759 |
|| my_index (optstring, *nextchar) == NULL)
|
760 |
{ |
761 |
if (print_errors)
|
762 |
{ |
763 |
if (argv[optind][1] == '-') |
764 |
/* --option */
|
765 |
fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
|
766 |
argv[0], nextchar);
|
767 |
else
|
768 |
/* +option or -option */
|
769 |
fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
|
770 |
argv[0], argv[optind][0], nextchar); |
771 |
} |
772 |
nextchar = (char *) ""; |
773 |
optind++; |
774 |
optopt = 0;
|
775 |
return '?'; |
776 |
} |
777 |
} |
778 |
|
779 |
/* Look at and handle the next short option-character. */
|
780 |
|
781 |
{ |
782 |
char c = *nextchar++;
|
783 |
char *temp = my_index (optstring, c);
|
784 |
|
785 |
/* Increment `optind' when we start to process its last character. */
|
786 |
if (*nextchar == '\0') |
787 |
++optind; |
788 |
|
789 |
if (temp == NULL || c == ':') |
790 |
{ |
791 |
if (print_errors)
|
792 |
{ |
793 |
if (posixly_correct)
|
794 |
/* 1003.2 specifies the format of this message. */
|
795 |
fprintf (stderr, _("%s: illegal option -- %c\n"),
|
796 |
argv[0], c);
|
797 |
else
|
798 |
fprintf (stderr, _("%s: invalid option -- %c\n"),
|
799 |
argv[0], c);
|
800 |
} |
801 |
optopt = c; |
802 |
return '?'; |
803 |
} |
804 |
/* Convenience. Treat POSIX -W foo same as long option --foo */
|
805 |
if (temp[0] == 'W' && temp[1] == ';') |
806 |
{ |
807 |
char *nameend;
|
808 |
const struct option *p; |
809 |
const struct option *pfound = NULL; |
810 |
int exact = 0; |
811 |
int ambig = 0; |
812 |
int indfound = 0; |
813 |
int option_index;
|
814 |
|
815 |
/* This is an option that requires an argument. */
|
816 |
if (*nextchar != '\0') |
817 |
{ |
818 |
optarg = nextchar; |
819 |
/* If we end this ARGV-element by taking the rest as an arg,
|
820 |
we must advance to the next element now. */
|
821 |
optind++; |
822 |
} |
823 |
else if (optind == argc) |
824 |
{ |
825 |
if (print_errors)
|
826 |
{ |
827 |
/* 1003.2 specifies the format of this message. */
|
828 |
fprintf (stderr, _("%s: option requires an argument -- %c\n"),
|
829 |
argv[0], c);
|
830 |
} |
831 |
optopt = c; |
832 |
if (optstring[0] == ':') |
833 |
c = ':';
|
834 |
else
|
835 |
c = '?';
|
836 |
return c;
|
837 |
} |
838 |
else
|
839 |
/* We already incremented `optind' once;
|
840 |
increment it again when taking next ARGV-elt as argument. */
|
841 |
optarg = argv[optind++]; |
842 |
|
843 |
/* optarg is now the argument, see if it's in the
|
844 |
table of longopts. */
|
845 |
|
846 |
for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) |
847 |
/* Do nothing. */ ;
|
848 |
|
849 |
/* Test all long options for either exact match
|
850 |
or abbreviated matches. */
|
851 |
for (p = longopts, option_index = 0; p->name; p++, option_index++) |
852 |
if (!strncmp (p->name, nextchar, nameend - nextchar))
|
853 |
{ |
854 |
if ((unsigned int) (nameend - nextchar) == strlen (p->name)) |
855 |
{ |
856 |
/* Exact match found. */
|
857 |
pfound = p; |
858 |
indfound = option_index; |
859 |
exact = 1;
|
860 |
break;
|
861 |
} |
862 |
else if (pfound == NULL) |
863 |
{ |
864 |
/* First nonexact match found. */
|
865 |
pfound = p; |
866 |
indfound = option_index; |
867 |
} |
868 |
else
|
869 |
/* Second or later nonexact match found. */
|
870 |
ambig = 1;
|
871 |
} |
872 |
if (ambig && !exact)
|
873 |
{ |
874 |
if (print_errors)
|
875 |
fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
|
876 |
argv[0], argv[optind]);
|
877 |
nextchar += strlen (nextchar); |
878 |
optind++; |
879 |
return '?'; |
880 |
} |
881 |
if (pfound != NULL) |
882 |
{ |
883 |
option_index = indfound; |
884 |
if (*nameend)
|
885 |
{ |
886 |
/* Don't test has_arg with >, because some C compilers don't
|
887 |
allow it to be used on enums. */
|
888 |
if (pfound->has_arg)
|
889 |
optarg = nameend + 1;
|
890 |
else
|
891 |
{ |
892 |
if (print_errors)
|
893 |
fprintf (stderr, _("%s: option `-W %s' doesn't allow an argument\n"),
|
894 |
argv[0], pfound->name);
|
895 |
|
896 |
nextchar += strlen (nextchar); |
897 |
return '?'; |
898 |
} |
899 |
} |
900 |
else if (pfound->has_arg == 1) |
901 |
{ |
902 |
if (optind < argc)
|
903 |
optarg = argv[optind++]; |
904 |
else
|
905 |
{ |
906 |
if (print_errors)
|
907 |
fprintf (stderr, |
908 |
_("%s: option `%s' requires an argument\n"),
|
909 |
argv[0], argv[optind - 1]); |
910 |
nextchar += strlen (nextchar); |
911 |
return optstring[0] == ':' ? ':' : '?'; |
912 |
} |
913 |
} |
914 |
nextchar += strlen (nextchar); |
915 |
if (longind != NULL) |
916 |
*longind = option_index; |
917 |
if (pfound->flag)
|
918 |
{ |
919 |
*(pfound->flag) = pfound->val; |
920 |
return 0; |
921 |
} |
922 |
return pfound->val;
|
923 |
} |
924 |
nextchar = NULL;
|
925 |
return 'W'; /* Let the application handle it. */ |
926 |
} |
927 |
if (temp[1] == ':') |
928 |
{ |
929 |
if (temp[2] == ':') |
930 |
{ |
931 |
/* This is an option that accepts an argument optionally. */
|
932 |
if (*nextchar != '\0') |
933 |
{ |
934 |
optarg = nextchar; |
935 |
optind++; |
936 |
} |
937 |
else
|
938 |
optarg = NULL;
|
939 |
nextchar = NULL;
|
940 |
} |
941 |
else
|
942 |
{ |
943 |
/* This is an option that requires an argument. */
|
944 |
if (*nextchar != '\0') |
945 |
{ |
946 |
optarg = nextchar; |
947 |
/* If we end this ARGV-element by taking the rest as an arg,
|
948 |
we must advance to the next element now. */
|
949 |
optind++; |
950 |
} |
951 |
else if (optind == argc) |
952 |
{ |
953 |
if (print_errors)
|
954 |
{ |
955 |
/* 1003.2 specifies the format of this message. */
|
956 |
fprintf (stderr, |
957 |
_("%s: option requires an argument -- %c\n"),
|
958 |
argv[0], c);
|
959 |
} |
960 |
optopt = c; |
961 |
if (optstring[0] == ':') |
962 |
c = ':';
|
963 |
else
|
964 |
c = '?';
|
965 |
} |
966 |
else
|
967 |
/* We already incremented `optind' once;
|
968 |
increment it again when taking next ARGV-elt as argument. */
|
969 |
optarg = argv[optind++]; |
970 |
nextchar = NULL;
|
971 |
} |
972 |
} |
973 |
return c;
|
974 |
} |
975 |
} |
976 |
|
977 |
int
|
978 |
getopt (argc, argv, optstring) |
979 |
int argc;
|
980 |
char *const *argv; |
981 |
const char *optstring; |
982 |
{ |
983 |
return _getopt_internal (argc, argv, optstring,
|
984 |
(const struct option *) 0, |
985 |
(int *) 0, |
986 |
0);
|
987 |
} |
988 |
|
989 |
#endif /* Not ELIDE_CODE. */ |
990 |
|
991 |
#ifdef TEST
|
992 |
|
993 |
/* Compile with -DTEST to make an executable for use in testing
|
994 |
the above definition of `getopt'. */
|
995 |
|
996 |
int
|
997 |
main (argc, argv) |
998 |
int argc;
|
999 |
char **argv;
|
1000 |
{ |
1001 |
int c;
|
1002 |
int digit_optind = 0; |
1003 |
|
1004 |
while (1) |
1005 |
{ |
1006 |
int this_option_optind = optind ? optind : 1; |
1007 |
|
1008 |
c = getopt (argc, argv, "abc:d:0123456789");
|
1009 |
if (c == -1) |
1010 |
break;
|
1011 |
|
1012 |
switch (c)
|
1013 |
{ |
1014 |
case '0': |
1015 |
case '1': |
1016 |
case '2': |
1017 |
case '3': |
1018 |
case '4': |
1019 |
case '5': |
1020 |
case '6': |
1021 |
case '7': |
1022 |
case '8': |
1023 |
case '9': |
1024 |
if (digit_optind != 0 && digit_optind != this_option_optind) |
1025 |
printf ("digits occur in two different argv-elements.\n");
|
1026 |
digit_optind = this_option_optind; |
1027 |
printf ("option %c\n", c);
|
1028 |
break;
|
1029 |
|
1030 |
case 'a': |
1031 |
printf ("option a\n");
|
1032 |
break;
|
1033 |
|
1034 |
case 'b': |
1035 |
printf ("option b\n");
|
1036 |
break;
|
1037 |
|
1038 |
case 'c': |
1039 |
printf ("option c with value `%s'\n", optarg);
|
1040 |
break;
|
1041 |
|
1042 |
case '?': |
1043 |
break;
|
1044 |
|
1045 |
default:
|
1046 |
printf ("?? getopt returned character code 0%o ??\n", c);
|
1047 |
} |
1048 |
} |
1049 |
|
1050 |
if (optind < argc)
|
1051 |
{ |
1052 |
printf ("non-option ARGV-elements: ");
|
1053 |
while (optind < argc)
|
1054 |
printf ("%s ", argv[optind++]);
|
1055 |
printf ("\n");
|
1056 |
} |
1057 |
|
1058 |
exit (0);
|
1059 |
} |
1060 |
|
1061 |
#endif /* TEST */ |