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Diffstat (limited to 'src/lib/util/getopt.c')
-rw-r--r-- | src/lib/util/getopt.c | 1015 |
1 files changed, 1015 insertions, 0 deletions
diff --git a/src/lib/util/getopt.c b/src/lib/util/getopt.c new file mode 100644 index 000000000..b1737bbc7 --- /dev/null +++ b/src/lib/util/getopt.c | |||
@@ -0,0 +1,1015 @@ | |||
1 | /* Getopt for GNU. | ||
2 | NOTE: getopt is now part of the C library, so if you don't know what | ||
3 | "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu | ||
4 | before changing it! | ||
5 | |||
6 | Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97 | ||
7 | Free Software Foundation, Inc. | ||
8 | |||
9 | NOTE: The canonical source of this file is maintained with the GNU C Library. | ||
10 | Bugs can be reported to bug-glibc@prep.ai.mit.edu. | ||
11 | |||
12 | This program is free software; you can redistribute it and/or modify it | ||
13 | under the terms of the GNU General Public License as published by the | ||
14 | Free Software Foundation; either version 3, or (at your option) any | ||
15 | later version. | ||
16 | |||
17 | This program is distributed in the hope that it will be useful, | ||
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
20 | GNU General Public License for more details. | ||
21 | |||
22 | You should have received a copy of the GNU General Public License | ||
23 | along with this program; if not, write to the Free Software | ||
24 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, | ||
25 | USA. | ||
26 | |||
27 | |||
28 | This code was heavily modified for GNUnet. | ||
29 | Copyright (C) 2006, 2017 Christian Grothoff | ||
30 | */ | ||
31 | |||
32 | /** | ||
33 | * @file util/getopt.c | ||
34 | * @brief GNU style option parsing | ||
35 | * | ||
36 | * TODO: get rid of statics (make reentrant) and | ||
37 | * replace main GNU getopt parser with one that | ||
38 | * actually fits our API. | ||
39 | */ | ||
40 | |||
41 | #include "platform.h" | ||
42 | #include "gnunet_util_lib.h" | ||
43 | |||
44 | #ifdef VMS | ||
45 | #include <unixlib.h> | ||
46 | #if HAVE_STRING_H - 0 | ||
47 | #include <string.h> | ||
48 | #endif | ||
49 | #endif | ||
50 | |||
51 | #define LOG(kind, ...) GNUNET_log_from (kind, "util-getopt", __VA_ARGS__) | ||
52 | |||
53 | #define LOG_STRERROR(kind, syscall) \ | ||
54 | GNUNET_log_from_strerror (kind, "util-getopt", syscall) | ||
55 | |||
56 | #ifndef _ | ||
57 | /* This is for other GNU distributions with internationalized messages. | ||
58 | When compiling libc, the _ macro is predefined. */ | ||
59 | #ifdef HAVE_LIBINTL_H | ||
60 | #include <libintl.h> | ||
61 | #define _(msgid) gettext (msgid) | ||
62 | #else | ||
63 | #define _(msgid) (msgid) | ||
64 | #endif | ||
65 | #endif | ||
66 | |||
67 | /* Describe the long-named options requested by the application. | ||
68 | The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector | ||
69 | of `struct GNoption' terminated by an element containing a name which is | ||
70 | zero. | ||
71 | |||
72 | The field `has_arg' is: | ||
73 | no_argument (or 0) if the option does not take an argument, | ||
74 | required_argument (or 1) if the option requires an argument, | ||
75 | optional_argument (or 2) if the option takes an optional argument. | ||
76 | |||
77 | If the field `flag' is not NULL, it points to a variable that is set | ||
78 | to the value given in the field `val' when the option is found, but | ||
79 | left unchanged if the option is not found. | ||
80 | |||
81 | To have a long-named option do something other than set an `int' to | ||
82 | a compiled-in constant, such as set a value from `GNoptarg', set the | ||
83 | option's `flag' field to zero and its `val' field to a nonzero | ||
84 | value (the equivalent single-letter option character, if there is | ||
85 | one). For long options that have a zero `flag' field, `getopt' | ||
86 | returns the contents of the `val' field. */ | ||
87 | |||
88 | struct GNoption | ||
89 | { | ||
90 | const char *name; | ||
91 | /* has_arg can't be an enum because some compilers complain about | ||
92 | * type mismatches in all the code that assumes it is an int. */ | ||
93 | int has_arg; | ||
94 | int *flag; | ||
95 | int val; | ||
96 | }; | ||
97 | |||
98 | |||
99 | /* This version of `getopt' appears to the caller like standard Unix `getopt' | ||
100 | but it behaves differently for the user, since it allows the user | ||
101 | to intersperse the options with the other arguments. | ||
102 | |||
103 | As `getopt' works, it permutes the elements of ARGV so that, | ||
104 | when it is done, all the options precede everything else. Thus | ||
105 | all application programs are extended to handle flexible argument order. | ||
106 | |||
107 | Setting the environment variable POSIXLY_CORRECT disables permutation. | ||
108 | Then the behavior is completely standard. | ||
109 | |||
110 | GNU application programs can use a third alternative mode in which | ||
111 | they can distinguish the relative order of options and other arguments. */ | ||
112 | |||
113 | /* For communication from `getopt' to the caller. | ||
114 | When `getopt' finds an option that takes an argument, | ||
115 | the argument value is returned here. | ||
116 | Also, when `ordering' is RETURN_IN_ORDER, | ||
117 | each non-option ARGV-element is returned here. */ | ||
118 | |||
119 | static char *GNoptarg = NULL; | ||
120 | |||
121 | /* Index in ARGV of the next element to be scanned. | ||
122 | This is used for communication to and from the caller | ||
123 | and for communication between successive calls to `getopt'. | ||
124 | |||
125 | On entry to `getopt', zero means this is the first call; initialize. | ||
126 | |||
127 | When `getopt' returns -1, this is the index of the first of the | ||
128 | non-option elements that the caller should itself scan. | ||
129 | |||
130 | Otherwise, `GNoptind' communicates from one call to the next | ||
131 | how much of ARGV has been scanned so far. */ | ||
132 | |||
133 | /* 1003.2 says this must be 1 before any call. */ | ||
134 | static int GNoptind = 1; | ||
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 | |||
146 | /* Describe how to deal with options that follow non-option ARGV-elements. | ||
147 | |||
148 | If the caller did not specify anything, | ||
149 | the default is REQUIRE_ORDER if the environment variable | ||
150 | POSIXLY_CORRECT is defined, PERMUTE otherwise. | ||
151 | |||
152 | REQUIRE_ORDER means don't recognize them as options; | ||
153 | stop option processing when the first non-option is seen. | ||
154 | This is what Unix does. | ||
155 | This mode of operation is selected by either setting the environment | ||
156 | variable POSIXLY_CORRECT, or using `+' as the first character | ||
157 | of the list of option characters. | ||
158 | |||
159 | PERMUTE is the default. We GNUNET_CRYPTO_random_permute the contents of ARGV as we scan, | ||
160 | so that eventually all the non-options are at the end. This allows options | ||
161 | to be given in any order, even with programs that were not written to | ||
162 | expect this. | ||
163 | |||
164 | RETURN_IN_ORDER is an option available to programs that were written | ||
165 | to expect GNoptions and other ARGV-elements in any order and that care about | ||
166 | the ordering of the two. We describe each non-option ARGV-element | ||
167 | as if it were the argument of an option with character code 1. | ||
168 | Using `-' as the first character of the list of option characters | ||
169 | selects this mode of operation. | ||
170 | |||
171 | The special argument `--' forces an end of option-scanning regardless | ||
172 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only | ||
173 | `--' can cause `getopt' to return -1 with `GNoptind' != ARGC. */ | ||
174 | |||
175 | static enum { REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER } ordering; | ||
176 | |||
177 | /* Value of POSIXLY_CORRECT environment variable. */ | ||
178 | static char *posixly_correct; | ||
179 | |||
180 | #ifdef __GNU_LIBRARY__ | ||
181 | /* We want to avoid inclusion of string.h with non-GNU libraries | ||
182 | because there are many ways it can cause trouble. | ||
183 | On some systems, it contains special magic macros that don't work | ||
184 | in GCC. */ | ||
185 | #include <string.h> | ||
186 | #define my_index strchr | ||
187 | #else | ||
188 | |||
189 | /* Avoid depending on library functions or files | ||
190 | whose names are inconsistent. */ | ||
191 | |||
192 | char * | ||
193 | getenv (); | ||
194 | |||
195 | static char * | ||
196 | my_index (const char *str, int chr) | ||
197 | { | ||
198 | while (*str) | ||
199 | { | ||
200 | if (*str == chr) | ||
201 | return (char *) str; | ||
202 | str++; | ||
203 | } | ||
204 | return 0; | ||
205 | } | ||
206 | |||
207 | |||
208 | /* If using GCC, we can safely declare strlen this way. | ||
209 | If not using GCC, it is ok not to declare it. */ | ||
210 | #ifdef __GNUC__ | ||
211 | /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. | ||
212 | That was relevant to code that was here before. */ | ||
213 | #if ! defined(__STDC__) || ! __STDC__ | ||
214 | /* gcc with -traditional declares the built-in strlen to return int, | ||
215 | and has done so at least since version 2.4.5. -- rms. */ | ||
216 | extern int | ||
217 | strlen (const char *); | ||
218 | |||
219 | #endif /* not __STDC__ */ | ||
220 | #endif /* __GNUC__ */ | ||
221 | |||
222 | #endif /* not __GNU_LIBRARY__ */ | ||
223 | |||
224 | /* Handle permutation of arguments. */ | ||
225 | |||
226 | /* Describe the part of ARGV that contains non-options that have | ||
227 | been skipped. `first_nonopt' is the index in ARGV of the first of them; | ||
228 | `last_nonopt' is the index after the last of them. */ | ||
229 | |||
230 | static int first_nonopt; | ||
231 | static int last_nonopt; | ||
232 | |||
233 | #define SWAP_FLAGS(ch1, ch2) | ||
234 | |||
235 | /* Exchange two adjacent subsequences of ARGV. | ||
236 | One subsequence is elements [first_nonopt,last_nonopt) | ||
237 | which contains all the non-options that have been skipped so far. | ||
238 | The other is elements [last_nonopt,GNoptind), which contains all | ||
239 | the options processed since those non-options were skipped. | ||
240 | |||
241 | `first_nonopt' and `last_nonopt' are relocated so that they describe | ||
242 | the new indices of the non-options in ARGV after they are moved. */ | ||
243 | |||
244 | #if defined(__STDC__) && __STDC__ | ||
245 | static void | ||
246 | exchange (char **); | ||
247 | |||
248 | #endif | ||
249 | |||
250 | static void | ||
251 | exchange (char **argv) | ||
252 | { | ||
253 | int bottom = first_nonopt; | ||
254 | int middle = last_nonopt; | ||
255 | int top = GNoptind; | ||
256 | char *tem; | ||
257 | |||
258 | /* Exchange the shorter segment with the far end of the longer segment. | ||
259 | * That puts the shorter segment into the right place. | ||
260 | * It leaves the longer segment in the right place overall, | ||
261 | * but it consists of two parts that need to be swapped next. */ | ||
262 | |||
263 | while (top > middle && middle > bottom) | ||
264 | { | ||
265 | if (top - middle > middle - bottom) | ||
266 | { | ||
267 | /* Bottom segment is the short one. */ | ||
268 | int len = middle - bottom; | ||
269 | register int i; | ||
270 | |||
271 | /* Swap it with the top part of the top segment. */ | ||
272 | for (i = 0; i < len; i++) | ||
273 | { | ||
274 | tem = argv[bottom + i]; | ||
275 | argv[bottom + i] = argv[top - (middle - bottom) + i]; | ||
276 | argv[top - (middle - bottom) + i] = tem; | ||
277 | SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); | ||
278 | } | ||
279 | /* Exclude the moved bottom segment from further swapping. */ | ||
280 | top -= len; | ||
281 | } | ||
282 | else | ||
283 | { | ||
284 | /* Top segment is the short one. */ | ||
285 | int len = top - middle; | ||
286 | register int i; | ||
287 | |||
288 | /* Swap it with the bottom part of the bottom segment. */ | ||
289 | for (i = 0; i < len; i++) | ||
290 | { | ||
291 | tem = argv[bottom + i]; | ||
292 | argv[bottom + i] = argv[middle + i]; | ||
293 | argv[middle + i] = tem; | ||
294 | SWAP_FLAGS (bottom + i, middle + i); | ||
295 | } | ||
296 | /* Exclude the moved top segment from further swapping. */ | ||
297 | bottom += len; | ||
298 | } | ||
299 | } | ||
300 | |||
301 | /* Update records for the slots the non-options now occupy. */ | ||
302 | |||
303 | first_nonopt += (GNoptind - last_nonopt); | ||
304 | last_nonopt = GNoptind; | ||
305 | } | ||
306 | |||
307 | |||
308 | /* Initialize the internal data when the first call is made. */ | ||
309 | |||
310 | #if defined(__STDC__) && __STDC__ | ||
311 | static const char * | ||
312 | _getopt_initialize (int, char *const *, const char *); | ||
313 | |||
314 | #endif | ||
315 | static const char * | ||
316 | _getopt_initialize (int argc, char *const *argv, const char *optstring) | ||
317 | { | ||
318 | /* Start processing options with ARGV-element 1 (since ARGV-element 0 | ||
319 | * is the program name); the sequence of previously skipped | ||
320 | * non-option ARGV-elements is empty. */ | ||
321 | |||
322 | first_nonopt = last_nonopt = GNoptind; | ||
323 | |||
324 | nextchar = NULL; | ||
325 | |||
326 | posixly_correct = getenv ("POSIXLY_CORRECT"); | ||
327 | |||
328 | /* Determine how to handle the ordering of options and nonoptions. */ | ||
329 | |||
330 | if (optstring[0] == '-') | ||
331 | { | ||
332 | ordering = RETURN_IN_ORDER; | ||
333 | ++optstring; | ||
334 | } | ||
335 | else if (optstring[0] == '+') | ||
336 | { | ||
337 | ordering = REQUIRE_ORDER; | ||
338 | ++optstring; | ||
339 | } | ||
340 | else if (posixly_correct != NULL) | ||
341 | ordering = REQUIRE_ORDER; | ||
342 | else | ||
343 | ordering = PERMUTE; | ||
344 | |||
345 | return optstring; | ||
346 | } | ||
347 | |||
348 | |||
349 | /* Scan elements of ARGV (whose length is ARGC) for option characters | ||
350 | given in OPTSTRING. | ||
351 | |||
352 | If an element of ARGV starts with '-', and is not exactly "-" or "--", | ||
353 | then it is an option element. The characters of this element | ||
354 | (aside from the initial '-') are option characters. If `getopt' | ||
355 | is called repeatedly, it returns successively each of the option characters | ||
356 | from each of the option elements. | ||
357 | |||
358 | If `getopt' finds another option character, it returns that character, | ||
359 | updating `GNoptind' and `nextchar' so that the next call to `getopt' can | ||
360 | resume the scan with the following option character or ARGV-element. | ||
361 | |||
362 | If there are no more option characters, `getopt' returns -1. | ||
363 | Then `GNoptind' is the index in ARGV of the first ARGV-element | ||
364 | that is not an option. (The ARGV-elements have been permuted | ||
365 | so that those that are not options now come last.) | ||
366 | |||
367 | OPTSTRING is a string containing the legitimate option characters. | ||
368 | If an option character is seen that is not listed in OPTSTRING, | ||
369 | return '?' after printing an error message. If you set `GNopterr' to | ||
370 | zero, the error message is suppressed but we still return '?'. | ||
371 | |||
372 | If a char in OPTSTRING is followed by a colon, that means it wants an arg, | ||
373 | so the following text in the same ARGV-element, or the text of the following | ||
374 | ARGV-element, is returned in `GNoptarg'. Two colons mean an option that | ||
375 | wants an optional arg; if there is text in the current ARGV-element, | ||
376 | it is returned in `GNoptarg', otherwise `GNoptarg' is set to zero. | ||
377 | |||
378 | If OPTSTRING starts with `-' or `+', it requests different methods of | ||
379 | handling the non-option ARGV-elements. | ||
380 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. | ||
381 | |||
382 | Long-named options begin with `--' instead of `-'. | ||
383 | Their names may be abbreviated as long as the abbreviation is unique | ||
384 | or is an exact match for some defined option. If they have an | ||
385 | argument, it follows the option name in the same ARGV-element, separated | ||
386 | from the option name by a `=', or else the in next ARGV-element. | ||
387 | When `getopt' finds a long-named option, it returns 0 if that option's | ||
388 | `flag' field is nonzero, the value of the option's `val' field | ||
389 | if the `flag' field is zero. | ||
390 | |||
391 | The elements of ARGV aren't really const, because we GNUNET_CRYPTO_random_permute them. | ||
392 | But we pretend they're const in the prototype to be compatible | ||
393 | with other systems. | ||
394 | |||
395 | LONGOPTS is a vector of `struct GNoption' terminated by an | ||
396 | element containing a name which is zero. | ||
397 | |||
398 | LONGIND returns the index in LONGOPT of the long-named option found. | ||
399 | It is only valid when a long-named option has been found by the most | ||
400 | recent call. | ||
401 | |||
402 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce | ||
403 | long-named options. */ | ||
404 | |||
405 | static int | ||
406 | GN_getopt_internal (int argc, | ||
407 | char *const *argv, | ||
408 | const char *optstring, | ||
409 | const struct GNoption *longopts, | ||
410 | int *longind, | ||
411 | int long_only) | ||
412 | { | ||
413 | static int __getopt_initialized = 0; | ||
414 | static int GNopterr = 1; | ||
415 | |||
416 | GNoptarg = NULL; | ||
417 | |||
418 | if ((GNoptind == 0) || ! __getopt_initialized) | ||
419 | { | ||
420 | if (GNoptind == 0) | ||
421 | GNoptind = 1; /* Don't scan ARGV[0], the program name. */ | ||
422 | optstring = _getopt_initialize (argc, argv, optstring); | ||
423 | __getopt_initialized = 1; | ||
424 | } | ||
425 | |||
426 | /* Test whether ARGV[GNoptind] points to a non-option argument. | ||
427 | * Either it does not have option syntax, or there is an environment flag | ||
428 | * from the shell indicating it is not an option. The later information | ||
429 | * is only used when the used in the GNU libc. */ | ||
430 | #define NONOPTION_P (argv[GNoptind][0] != '-' || argv[GNoptind][1] == '\0') | ||
431 | |||
432 | if ((nextchar == NULL) || (*nextchar == '\0')) | ||
433 | { | ||
434 | /* Advance to the next ARGV-element. */ | ||
435 | |||
436 | /* Give FIRST_NONOPT & LAST_NONOPT rational values if GNoptind has been | ||
437 | * moved back by the user (who may also have changed the arguments). */ | ||
438 | if (last_nonopt > GNoptind) | ||
439 | last_nonopt = GNoptind; | ||
440 | if (first_nonopt > GNoptind) | ||
441 | first_nonopt = GNoptind; | ||
442 | |||
443 | if (ordering == PERMUTE) | ||
444 | { | ||
445 | /* If we have just processed some options following some non-options, | ||
446 | * exchange them so that the options come first. */ | ||
447 | |||
448 | if ((first_nonopt != last_nonopt) && (last_nonopt != GNoptind) ) | ||
449 | exchange ((char **) argv); | ||
450 | else if (last_nonopt != GNoptind) | ||
451 | first_nonopt = GNoptind; | ||
452 | |||
453 | /* Skip any additional non-options | ||
454 | * and extend the range of non-options previously skipped. */ | ||
455 | |||
456 | while (GNoptind < argc && NONOPTION_P) | ||
457 | GNoptind++; | ||
458 | last_nonopt = GNoptind; | ||
459 | } | ||
460 | |||
461 | /* The special ARGV-element `--' means premature end of options. | ||
462 | * Skip it like a null option, | ||
463 | * then exchange with previous non-options as if it were an option, | ||
464 | * then skip everything else like a non-option. */ | ||
465 | if ((GNoptind != argc) && ! strcmp (argv[GNoptind], "--")) | ||
466 | { | ||
467 | GNoptind++; | ||
468 | |||
469 | if ((first_nonopt != last_nonopt) && (last_nonopt != GNoptind) ) | ||
470 | exchange ((char **) argv); | ||
471 | else if (first_nonopt == last_nonopt) | ||
472 | first_nonopt = GNoptind; | ||
473 | last_nonopt = argc; | ||
474 | |||
475 | GNoptind = argc; | ||
476 | } | ||
477 | |||
478 | /* If we have done all the ARGV-elements, stop the scan | ||
479 | * and back over any non-options that we skipped and permuted. */ | ||
480 | |||
481 | if (GNoptind == argc) | ||
482 | { | ||
483 | /* Set the next-arg-index to point at the non-options | ||
484 | * that we previously skipped, so the caller will digest them. */ | ||
485 | if (first_nonopt != last_nonopt) | ||
486 | GNoptind = first_nonopt; | ||
487 | return -1; | ||
488 | } | ||
489 | |||
490 | /* If we have come to a non-option and did not permute it, | ||
491 | * either stop the scan or describe it to the caller and pass it by. */ | ||
492 | |||
493 | if (NONOPTION_P) | ||
494 | { | ||
495 | if (ordering == REQUIRE_ORDER) | ||
496 | return -1; | ||
497 | GNoptarg = argv[GNoptind++]; | ||
498 | return 1; | ||
499 | } | ||
500 | |||
501 | /* We have found another option-ARGV-element. | ||
502 | * Skip the initial punctuation. */ | ||
503 | |||
504 | nextchar = | ||
505 | (argv[GNoptind] + 1 + (longopts != NULL && argv[GNoptind][1] == '-')); | ||
506 | } | ||
507 | |||
508 | /* Decode the current option-ARGV-element. */ | ||
509 | |||
510 | /* Check whether the ARGV-element is a long option. | ||
511 | * | ||
512 | * If long_only and the ARGV-element has the form "-f", where f is | ||
513 | * a valid short option, don't consider it an abbreviated form of | ||
514 | * a long option that starts with f. Otherwise there would be no | ||
515 | * way to give the -f short option. | ||
516 | * | ||
517 | * On the other hand, if there's a long option "fubar" and | ||
518 | * the ARGV-element is "-fu", do consider that an abbreviation of | ||
519 | * the long option, just like "--fu", and not "-f" with arg "u". | ||
520 | * | ||
521 | * This distinction seems to be the most useful approach. */if ((longopts != NULL) && | ||
522 | ((argv[GNoptind][1] == '-') || | ||
523 | (long_only && | ||
524 | (argv[GNoptind][2] || ! my_index (optstring, argv[GNoptind][1]))))) | ||
525 | { | ||
526 | char *nameend; | ||
527 | const struct GNoption *p; | ||
528 | const struct GNoption *pfound = NULL; | ||
529 | int exact = 0; | ||
530 | int ambig = 0; | ||
531 | int indfound = -1; | ||
532 | int option_index; | ||
533 | |||
534 | for (nameend = nextchar; *nameend && *nameend != '='; nameend++) | ||
535 | /* Do nothing. */; | ||
536 | |||
537 | /* Test all long options for either exact match | ||
538 | * or abbreviated matches. */ | ||
539 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | ||
540 | if (! strncmp (p->name, nextchar, nameend - nextchar)) | ||
541 | { | ||
542 | if ((unsigned int) (nameend - nextchar) == | ||
543 | (unsigned int) strlen (p->name)) | ||
544 | { | ||
545 | /* Exact match found. */ | ||
546 | pfound = p; | ||
547 | indfound = option_index; | ||
548 | exact = 1; | ||
549 | break; | ||
550 | } | ||
551 | else if (pfound == NULL) | ||
552 | { | ||
553 | /* First nonexact match found. */ | ||
554 | pfound = p; | ||
555 | indfound = option_index; | ||
556 | } | ||
557 | else | ||
558 | /* Second or later nonexact match found. */ | ||
559 | ambig = 1; | ||
560 | } | ||
561 | |||
562 | if (ambig && ! exact) | ||
563 | { | ||
564 | if (GNopterr) | ||
565 | fprintf (stderr, | ||
566 | _ ("%s: option `%s' is ambiguous\n"), | ||
567 | argv[0], | ||
568 | argv[GNoptind]); | ||
569 | nextchar += strlen (nextchar); | ||
570 | GNoptind++; | ||
571 | return '?'; | ||
572 | } | ||
573 | |||
574 | if (pfound != NULL) | ||
575 | { | ||
576 | option_index = indfound; | ||
577 | GNoptind++; | ||
578 | if (*nameend) | ||
579 | { | ||
580 | /* Don't test has_arg with >, because some C compilers don't | ||
581 | * allow it to be used on enums. */ | ||
582 | if (pfound->has_arg) | ||
583 | GNoptarg = nameend + 1; | ||
584 | else | ||
585 | { | ||
586 | if (GNopterr) | ||
587 | { | ||
588 | if (argv[GNoptind - 1][1] == '-') | ||
589 | /* --option */ | ||
590 | fprintf (stderr, | ||
591 | _ ("%s: option `--%s' does not allow an argument\n"), | ||
592 | argv[0], | ||
593 | pfound->name); | ||
594 | else | ||
595 | /* +option or -option */ | ||
596 | fprintf (stderr, | ||
597 | _ ("%s: option `%c%s' does not allow an argument\n"), | ||
598 | argv[0], | ||
599 | argv[GNoptind - 1][0], | ||
600 | pfound->name); | ||
601 | } | ||
602 | nextchar += strlen (nextchar); | ||
603 | return '?'; | ||
604 | } | ||
605 | } | ||
606 | else if (pfound->has_arg == 1) | ||
607 | { | ||
608 | if (GNoptind < argc) | ||
609 | { | ||
610 | GNoptarg = argv[GNoptind++]; | ||
611 | } | ||
612 | else | ||
613 | { | ||
614 | if (GNopterr) | ||
615 | { | ||
616 | fprintf (stderr, | ||
617 | _ ("%s: option `%s' requires an argument\n"), | ||
618 | argv[0], | ||
619 | argv[GNoptind - 1]); | ||
620 | } | ||
621 | nextchar += strlen (nextchar); | ||
622 | return (optstring[0] == ':') ? ':' : '?'; | ||
623 | } | ||
624 | } | ||
625 | nextchar += strlen (nextchar); | ||
626 | if (longind != NULL) | ||
627 | *longind = option_index; | ||
628 | if (pfound->flag) | ||
629 | { | ||
630 | *(pfound->flag) = pfound->val; | ||
631 | return 0; | ||
632 | } | ||
633 | return pfound->val; | ||
634 | } | ||
635 | |||
636 | /* Can't find it as a long option. If this is not getopt_long_only, | ||
637 | * or the option starts with '--' or is not a valid short | ||
638 | * option, then it's an error. | ||
639 | * Otherwise interpret it as a short option. */ | ||
640 | if (! long_only || (argv[GNoptind][1] == '-') || | ||
641 | (my_index (optstring, *nextchar) == NULL) ) | ||
642 | { | ||
643 | if (GNopterr) | ||
644 | { | ||
645 | if (argv[GNoptind][1] == '-') | ||
646 | /* --option */ | ||
647 | fprintf (stderr, | ||
648 | _ ("%s: unrecognized option `--%s'\n"), | ||
649 | argv[0], | ||
650 | nextchar); | ||
651 | else | ||
652 | /* +option or -option */ | ||
653 | fprintf (stderr, | ||
654 | _ ("%s: unrecognized option `%c%s'\n"), | ||
655 | argv[0], | ||
656 | argv[GNoptind][0], | ||
657 | nextchar); | ||
658 | } | ||
659 | nextchar = (char *) ""; | ||
660 | GNoptind++; | ||
661 | return '?'; | ||
662 | } | ||
663 | } | ||
664 | |||
665 | /* Look at and handle the next short option-character. */ | ||
666 | |||
667 | { | ||
668 | char c = *nextchar++; | ||
669 | char *temp = my_index (optstring, c); | ||
670 | |||
671 | /* Increment `GNoptind' when we start to process its last character. */ | ||
672 | if (*nextchar == '\0') | ||
673 | ++GNoptind; | ||
674 | |||
675 | if ((temp == NULL) || (c == ':')) | ||
676 | { | ||
677 | if (GNopterr) | ||
678 | { | ||
679 | if (posixly_correct) | ||
680 | /* 1003.2 specifies the format of this message. */ | ||
681 | fprintf (stderr, _ ("%s: illegal option -- %c\n"), argv[0], c); | ||
682 | else | ||
683 | fprintf (stderr, _ ("%s: invalid option -- %c\n"), argv[0], c); | ||
684 | } | ||
685 | return '?'; | ||
686 | } | ||
687 | /* Convenience. Treat POSIX -W foo same as long option --foo */ | ||
688 | if ((temp[0] == 'W') && (temp[1] == ';')) | ||
689 | { | ||
690 | char *nameend; | ||
691 | const struct GNoption *p; | ||
692 | const struct GNoption *pfound = NULL; | ||
693 | int exact = 0; | ||
694 | int ambig = 0; | ||
695 | int indfound = 0; | ||
696 | int option_index; | ||
697 | |||
698 | /* This is an option that requires an argument. */ | ||
699 | if (*nextchar != '\0') | ||
700 | { | ||
701 | GNoptarg = nextchar; | ||
702 | /* If we end this ARGV-element by taking the rest as an arg, | ||
703 | * we must advance to the next element now. */ | ||
704 | GNoptind++; | ||
705 | } | ||
706 | else if (GNoptind == argc) | ||
707 | { | ||
708 | if (GNopterr) | ||
709 | { | ||
710 | /* 1003.2 specifies the format of this message. */ | ||
711 | fprintf (stderr, | ||
712 | _ ("%s: option requires an argument -- %c\n"), | ||
713 | argv[0], | ||
714 | c); | ||
715 | } | ||
716 | if (optstring[0] == ':') | ||
717 | c = ':'; | ||
718 | else | ||
719 | c = '?'; | ||
720 | return c; | ||
721 | } | ||
722 | else | ||
723 | /* We already incremented `GNoptind' once; | ||
724 | * increment it again when taking next ARGV-elt as argument. */ | ||
725 | GNoptarg = argv[GNoptind++]; | ||
726 | |||
727 | /* GNoptarg is now the argument, see if it's in the | ||
728 | * table of longopts. */ | ||
729 | |||
730 | for (nextchar = nameend = GNoptarg; *nameend && *nameend != '='; | ||
731 | nameend++) | ||
732 | /* Do nothing. */; | ||
733 | |||
734 | /* Test all long options for either exact match | ||
735 | * or abbreviated matches. */ | ||
736 | if (longopts != NULL) | ||
737 | for (p = longopts, option_index = 0; p->name; p++, option_index++) | ||
738 | if (! strncmp (p->name, nextchar, nameend - nextchar)) | ||
739 | { | ||
740 | if ((unsigned int) (nameend - nextchar) == strlen (p->name)) | ||
741 | { | ||
742 | /* Exact match found. */ | ||
743 | pfound = p; | ||
744 | indfound = option_index; | ||
745 | exact = 1; | ||
746 | break; | ||
747 | } | ||
748 | else if (pfound == NULL) | ||
749 | { | ||
750 | /* First nonexact match found. */ | ||
751 | pfound = p; | ||
752 | indfound = option_index; | ||
753 | } | ||
754 | else | ||
755 | /* Second or later nonexact match found. */ | ||
756 | ambig = 1; | ||
757 | } | ||
758 | if (ambig && ! exact) | ||
759 | { | ||
760 | if (GNopterr) | ||
761 | fprintf (stderr, | ||
762 | _ ("%s: option `-W %s' is ambiguous\n"), | ||
763 | argv[0], | ||
764 | argv[GNoptind]); | ||
765 | nextchar += strlen (nextchar); | ||
766 | GNoptind++; | ||
767 | return '?'; | ||
768 | } | ||
769 | if (pfound != NULL) | ||
770 | { | ||
771 | option_index = indfound; | ||
772 | if (*nameend) | ||
773 | { | ||
774 | /* Don't test has_arg with >, because some C compilers don't | ||
775 | * allow it to be used on enums. */ | ||
776 | if (pfound->has_arg) | ||
777 | GNoptarg = nameend + 1; | ||
778 | else | ||
779 | { | ||
780 | if (GNopterr) | ||
781 | fprintf (stderr, | ||
782 | _ ("%s: option `-W %s' does not allow an argument\n"), | ||
783 | argv[0], | ||
784 | pfound->name); | ||
785 | |||
786 | nextchar += strlen (nextchar); | ||
787 | return '?'; | ||
788 | } | ||
789 | } | ||
790 | else if (pfound->has_arg == 1) | ||
791 | { | ||
792 | if (GNoptind < argc) | ||
793 | GNoptarg = argv[GNoptind++]; | ||
794 | else | ||
795 | { | ||
796 | if (GNopterr) | ||
797 | fprintf (stderr, | ||
798 | _ ("%s: option `%s' requires an argument\n"), | ||
799 | argv[0], | ||
800 | argv[GNoptind - 1]); | ||
801 | nextchar += strlen (nextchar); | ||
802 | return optstring[0] == ':' ? ':' : '?'; | ||
803 | } | ||
804 | } | ||
805 | nextchar += strlen (nextchar); | ||
806 | if (longind != NULL) | ||
807 | *longind = option_index; | ||
808 | if (pfound->flag) | ||
809 | { | ||
810 | *(pfound->flag) = pfound->val; | ||
811 | return 0; | ||
812 | } | ||
813 | return pfound->val; | ||
814 | } | ||
815 | nextchar = NULL; | ||
816 | return 'W'; /* Let the application handle it. */ | ||
817 | } | ||
818 | if (temp[1] == ':') | ||
819 | { | ||
820 | if (temp[2] == ':') | ||
821 | { | ||
822 | /* This is an option that accepts an argument optionally. */ | ||
823 | if (*nextchar != '\0') | ||
824 | { | ||
825 | GNoptarg = nextchar; | ||
826 | GNoptind++; | ||
827 | } | ||
828 | else | ||
829 | GNoptarg = NULL; | ||
830 | nextchar = NULL; | ||
831 | } | ||
832 | else | ||
833 | { | ||
834 | /* This is an option that requires an argument. */ | ||
835 | if (*nextchar != '\0') | ||
836 | { | ||
837 | GNoptarg = nextchar; | ||
838 | /* If we end this ARGV-element by taking the rest as an arg, | ||
839 | * we must advance to the next element now. */ | ||
840 | GNoptind++; | ||
841 | } | ||
842 | else if (GNoptind == argc) | ||
843 | { | ||
844 | if (GNopterr) | ||
845 | { | ||
846 | /* 1003.2 specifies the format of this message. */ | ||
847 | fprintf (stderr, | ||
848 | _ ("%s: option requires an argument -- %c\n"), | ||
849 | argv[0], | ||
850 | c); | ||
851 | } | ||
852 | if (optstring[0] == ':') | ||
853 | c = ':'; | ||
854 | else | ||
855 | c = '?'; | ||
856 | } | ||
857 | else | ||
858 | /* We already incremented `GNoptind' once; | ||
859 | * increment it again when taking next ARGV-elt as argument. */ | ||
860 | GNoptarg = argv[GNoptind++]; | ||
861 | nextchar = NULL; | ||
862 | } | ||
863 | } | ||
864 | return c; | ||
865 | } | ||
866 | } | ||
867 | |||
868 | |||
869 | static int | ||
870 | GNgetopt_long (int argc, | ||
871 | char *const *argv, | ||
872 | const char *options, | ||
873 | const struct GNoption *long_options, | ||
874 | int *opt_index) | ||
875 | { | ||
876 | return GN_getopt_internal (argc, argv, options, long_options, opt_index, 0); | ||
877 | } | ||
878 | |||
879 | |||
880 | /* ******************** now the GNUnet specific modifications... ********************* */ | ||
881 | |||
882 | |||
883 | int | ||
884 | GNUNET_GETOPT_run (const char *binaryOptions, | ||
885 | const struct GNUNET_GETOPT_CommandLineOption *allOptions, | ||
886 | unsigned int argc, | ||
887 | char *const *argv) | ||
888 | { | ||
889 | struct GNoption *long_options; | ||
890 | struct GNUNET_GETOPT_CommandLineProcessorContext clpc; | ||
891 | int count; | ||
892 | char *shorts; | ||
893 | int spos; | ||
894 | enum GNUNET_GenericReturnValue cont; | ||
895 | uint8_t *seen; | ||
896 | unsigned int optmatch = 0; | ||
897 | const char *have_exclusive = NULL; | ||
898 | |||
899 | GNUNET_assert (argc > 0); | ||
900 | GNoptind = 0; | ||
901 | clpc.binaryName = argv[0]; | ||
902 | clpc.binaryOptions = binaryOptions; | ||
903 | clpc.allOptions = allOptions; | ||
904 | clpc.argv = argv; | ||
905 | clpc.argc = argc; | ||
906 | for (count = 0; NULL != allOptions[count].name; count++) | ||
907 | ; | ||
908 | |||
909 | /* transform our option representation into the format | ||
910 | used by the GNU getopt copylib */ | ||
911 | long_options = GNUNET_new_array (count + 1, struct GNoption); | ||
912 | seen = GNUNET_new_array (count, uint8_t); | ||
913 | shorts = GNUNET_malloc (count * 2 + 1); | ||
914 | spos = 0; | ||
915 | for (unsigned i = 0; i < count; i++) | ||
916 | { | ||
917 | long_options[i].name = allOptions[i].name; | ||
918 | long_options[i].has_arg = allOptions[i].require_argument; | ||
919 | long_options[i].flag = NULL; | ||
920 | long_options[i].val = allOptions[i].shortName; | ||
921 | shorts[spos++] = allOptions[i].shortName; | ||
922 | if (allOptions[i].require_argument != 0) | ||
923 | shorts[spos++] = ':'; | ||
924 | } | ||
925 | long_options[count].name = NULL; | ||
926 | long_options[count].has_arg = 0; | ||
927 | long_options[count].flag = NULL; | ||
928 | long_options[count].val = '\0'; | ||
929 | shorts[spos] = '\0'; | ||
930 | cont = GNUNET_OK; | ||
931 | |||
932 | /* main getopt loop */ | ||
933 | while (1) | ||
934 | { | ||
935 | int option_index = 0; | ||
936 | unsigned int i; | ||
937 | int c; | ||
938 | |||
939 | c = GNgetopt_long (argc, | ||
940 | argv, | ||
941 | shorts, | ||
942 | long_options, | ||
943 | &option_index); | ||
944 | if (c == GNUNET_SYSERR) | ||
945 | break; /* No more flags to process */ | ||
946 | |||
947 | /* Check which of our program's options was given by the user */ | ||
948 | for (i = 0; i < count; i++) | ||
949 | { | ||
950 | clpc.currentArgument = GNoptind - 1; | ||
951 | if ((char) c == allOptions[i].shortName) | ||
952 | { | ||
953 | optmatch++; | ||
954 | if (allOptions[i].option_exclusive) | ||
955 | have_exclusive = allOptions[i].name; | ||
956 | if (GNUNET_OK == cont) | ||
957 | { | ||
958 | /* parse the option using the option-specific processor */ | ||
959 | cont = allOptions[i].processor (&clpc, | ||
960 | allOptions[i].scls, | ||
961 | allOptions[i].name, | ||
962 | GNoptarg); | ||
963 | } | ||
964 | seen[i] = 1; | ||
965 | break; | ||
966 | } | ||
967 | } | ||
968 | if (i == count) | ||
969 | { | ||
970 | fprintf (stderr, | ||
971 | _ ("Use %s to get a list of options.\n"), | ||
972 | "--help"); | ||
973 | cont = GNUNET_SYSERR; | ||
974 | } | ||
975 | } | ||
976 | GNUNET_free (shorts); | ||
977 | GNUNET_free (long_options); | ||
978 | |||
979 | /* check that if any option that was marked as exclusive | ||
980 | is the only option that was provided */ | ||
981 | if ((NULL != have_exclusive) && (optmatch > 1)) | ||
982 | { | ||
983 | fprintf (stderr, | ||
984 | _ ("Option `%s' can't be used with other options.\n"), | ||
985 | have_exclusive); | ||
986 | cont = GNUNET_SYSERR; | ||
987 | } | ||
988 | if (GNUNET_YES == cont) | ||
989 | { | ||
990 | /* check that all mandatory options are present */ | ||
991 | for (count = 0; NULL != allOptions[count].name; count++) | ||
992 | { | ||
993 | if ((0 == seen[count]) && (allOptions[count].option_mandatory)) | ||
994 | { | ||
995 | fprintf (stderr, | ||
996 | _ ("Missing mandatory option `%s'.\n"), | ||
997 | allOptions[count].name); | ||
998 | cont = GNUNET_SYSERR; | ||
999 | } | ||
1000 | } | ||
1001 | } | ||
1002 | GNUNET_free (seen); | ||
1003 | |||
1004 | /* call cleaners, if available */ | ||
1005 | for (unsigned int i = 0; NULL != allOptions[i].name; i++) | ||
1006 | if (NULL != allOptions[i].cleaner) | ||
1007 | allOptions[i].cleaner (allOptions[i].scls); | ||
1008 | |||
1009 | if (GNUNET_OK != cont) | ||
1010 | return cont; | ||
1011 | return GNoptind; | ||
1012 | } | ||
1013 | |||
1014 | |||
1015 | /* end of getopt.c */ | ||