diff options
author | nicoo <nicoo@debian.org> | 2020-02-12 13:42:22 +0100 |
---|---|---|
committer | Nicolas Braud-Santoni <nicolas@braud-santoni.eu> | 2020-02-12 13:42:22 +0100 |
commit | c79050aa44b8836d836c5dd22a383a073c28b74b (patch) | |
tree | 7bcca9fabd7718bf87ca600a6594f57b76d8de7d /openbsd-compat/getopt_long.c |
Import upstream release 1.3.0
Closes: #951184
Diffstat (limited to 'openbsd-compat/getopt_long.c')
-rw-r--r-- | openbsd-compat/getopt_long.c | 523 |
1 files changed, 523 insertions, 0 deletions
diff --git a/openbsd-compat/getopt_long.c b/openbsd-compat/getopt_long.c new file mode 100644 index 0000000..dabbb46 --- /dev/null +++ b/openbsd-compat/getopt_long.c | |||
@@ -0,0 +1,523 @@ | |||
1 | /* $OpenBSD: getopt_long.c,v 1.25 2011/03/05 22:10:11 guenther Exp $ */ | ||
2 | /* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */ | ||
3 | |||
4 | /* | ||
5 | * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com> | ||
6 | * | ||
7 | * Permission to use, copy, modify, and distribute this software for any | ||
8 | * purpose with or without fee is hereby granted, provided that the above | ||
9 | * copyright notice and this permission notice appear in all copies. | ||
10 | * | ||
11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | ||
12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | ||
13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | ||
14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | ||
17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
18 | * | ||
19 | * Sponsored in part by the Defense Advanced Research Projects | ||
20 | * Agency (DARPA) and Air Force Research Laboratory, Air Force | ||
21 | * Materiel Command, USAF, under agreement number F39502-99-1-0512. | ||
22 | */ | ||
23 | /*- | ||
24 | * Copyright (c) 2000 The NetBSD Foundation, Inc. | ||
25 | * All rights reserved. | ||
26 | * | ||
27 | * This code is derived from software contributed to The NetBSD Foundation | ||
28 | * by Dieter Baron and Thomas Klausner. | ||
29 | * | ||
30 | * Redistribution and use in source and binary forms, with or without | ||
31 | * modification, are permitted provided that the following conditions | ||
32 | * are met: | ||
33 | * 1. Redistributions of source code must retain the above copyright | ||
34 | * notice, this list of conditions and the following disclaimer. | ||
35 | * 2. Redistributions in binary form must reproduce the above copyright | ||
36 | * notice, this list of conditions and the following disclaimer in the | ||
37 | * documentation and/or other materials provided with the distribution. | ||
38 | * | ||
39 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS | ||
40 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | ||
41 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS | ||
43 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
44 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
45 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
46 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
47 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
49 | * POSSIBILITY OF SUCH DAMAGE. | ||
50 | */ | ||
51 | |||
52 | /* OPENBSD ORIGINAL: lib/libc/stdlib/getopt_long.c */ | ||
53 | #include "openbsd-compat.h" | ||
54 | |||
55 | #if !defined(HAVE_GETOPT) | ||
56 | |||
57 | #if 0 | ||
58 | #include <err.h> | ||
59 | #include <getopt.h> | ||
60 | #endif | ||
61 | #include <errno.h> | ||
62 | #include <stdlib.h> | ||
63 | #include <string.h> | ||
64 | #include <stdarg.h> | ||
65 | |||
66 | int opterr = 1; /* if error message should be printed */ | ||
67 | int optind = 1; /* index into parent argv vector */ | ||
68 | int optopt = '?'; /* character checked for validity */ | ||
69 | int optreset; /* reset getopt */ | ||
70 | char *optarg; /* argument associated with option */ | ||
71 | |||
72 | #define PRINT_ERROR ((opterr) && (*options != ':')) | ||
73 | |||
74 | #define FLAG_PERMUTE 0x01 /* permute non-options to the end of argv */ | ||
75 | #define FLAG_ALLARGS 0x02 /* treat non-options as args to option "-1" */ | ||
76 | #define FLAG_LONGONLY 0x04 /* operate as getopt_long_only */ | ||
77 | |||
78 | /* return values */ | ||
79 | #define BADCH (int)'?' | ||
80 | #define BADARG ((*options == ':') ? (int)':' : (int)'?') | ||
81 | #define INORDER (int)1 | ||
82 | |||
83 | #define EMSG "" | ||
84 | |||
85 | static int getopt_internal(int, char * const *, const char *, | ||
86 | const struct option *, int *, int); | ||
87 | static int parse_long_options(char * const *, const char *, | ||
88 | const struct option *, int *, int); | ||
89 | static int gcd(int, int); | ||
90 | static void permute_args(int, int, int, char * const *); | ||
91 | |||
92 | static char *place = EMSG; /* option letter processing */ | ||
93 | |||
94 | /* XXX: set optreset to 1 rather than these two */ | ||
95 | static int nonopt_start = -1; /* first non option argument (for permute) */ | ||
96 | static int nonopt_end = -1; /* first option after non options (for permute) */ | ||
97 | |||
98 | /* Error messages */ | ||
99 | static const char recargchar[] = "option requires an argument -- %c"; | ||
100 | static const char recargstring[] = "option requires an argument -- %s"; | ||
101 | static const char ambig[] = "ambiguous option -- %.*s"; | ||
102 | static const char noarg[] = "option doesn't take an argument -- %.*s"; | ||
103 | static const char illoptchar[] = "unknown option -- %c"; | ||
104 | static const char illoptstring[] = "unknown option -- %s"; | ||
105 | |||
106 | /* | ||
107 | * Compute the greatest common divisor of a and b. | ||
108 | */ | ||
109 | static int | ||
110 | gcd(int a, int b) | ||
111 | { | ||
112 | int c; | ||
113 | |||
114 | c = a % b; | ||
115 | while (c != 0) { | ||
116 | a = b; | ||
117 | b = c; | ||
118 | c = a % b; | ||
119 | } | ||
120 | |||
121 | return (b); | ||
122 | } | ||
123 | |||
124 | /* | ||
125 | * Exchange the block from nonopt_start to nonopt_end with the block | ||
126 | * from nonopt_end to opt_end (keeping the same order of arguments | ||
127 | * in each block). | ||
128 | */ | ||
129 | static void | ||
130 | permute_args(int panonopt_start, int panonopt_end, int opt_end, | ||
131 | char * const *nargv) | ||
132 | { | ||
133 | int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos; | ||
134 | char *swap; | ||
135 | |||
136 | /* | ||
137 | * compute lengths of blocks and number and size of cycles | ||
138 | */ | ||
139 | nnonopts = panonopt_end - panonopt_start; | ||
140 | nopts = opt_end - panonopt_end; | ||
141 | ncycle = gcd(nnonopts, nopts); | ||
142 | cyclelen = (opt_end - panonopt_start) / ncycle; | ||
143 | |||
144 | for (i = 0; i < ncycle; i++) { | ||
145 | cstart = panonopt_end+i; | ||
146 | pos = cstart; | ||
147 | for (j = 0; j < cyclelen; j++) { | ||
148 | if (pos >= panonopt_end) | ||
149 | pos -= nnonopts; | ||
150 | else | ||
151 | pos += nopts; | ||
152 | swap = nargv[pos]; | ||
153 | /* LINTED const cast */ | ||
154 | ((char **) nargv)[pos] = nargv[cstart]; | ||
155 | /* LINTED const cast */ | ||
156 | ((char **)nargv)[cstart] = swap; | ||
157 | } | ||
158 | } | ||
159 | } | ||
160 | |||
161 | /* | ||
162 | * parse_long_options -- | ||
163 | * Parse long options in argc/argv argument vector. | ||
164 | * Returns -1 if short_too is set and the option does not match long_options. | ||
165 | */ | ||
166 | static int | ||
167 | parse_long_options(char * const *nargv, const char *options, | ||
168 | const struct option *long_options, int *idx, int short_too) | ||
169 | { | ||
170 | char *current_argv, *has_equal; | ||
171 | size_t current_argv_len; | ||
172 | int i, match; | ||
173 | |||
174 | current_argv = place; | ||
175 | match = -1; | ||
176 | |||
177 | optind++; | ||
178 | |||
179 | if ((has_equal = strchr(current_argv, '=')) != NULL) { | ||
180 | /* argument found (--option=arg) */ | ||
181 | current_argv_len = has_equal - current_argv; | ||
182 | has_equal++; | ||
183 | } else | ||
184 | current_argv_len = strlen(current_argv); | ||
185 | |||
186 | for (i = 0; long_options[i].name; i++) { | ||
187 | /* find matching long option */ | ||
188 | if (strncmp(current_argv, long_options[i].name, | ||
189 | current_argv_len)) | ||
190 | continue; | ||
191 | |||
192 | if (strlen(long_options[i].name) == current_argv_len) { | ||
193 | /* exact match */ | ||
194 | match = i; | ||
195 | break; | ||
196 | } | ||
197 | /* | ||
198 | * If this is a known short option, don't allow | ||
199 | * a partial match of a single character. | ||
200 | */ | ||
201 | if (short_too && current_argv_len == 1) | ||
202 | continue; | ||
203 | |||
204 | if (match == -1) /* partial match */ | ||
205 | match = i; | ||
206 | else { | ||
207 | /* ambiguous abbreviation */ | ||
208 | if (PRINT_ERROR) | ||
209 | warnx(ambig, (int)current_argv_len, | ||
210 | current_argv); | ||
211 | optopt = 0; | ||
212 | return (BADCH); | ||
213 | } | ||
214 | } | ||
215 | if (match != -1) { /* option found */ | ||
216 | if (long_options[match].has_arg == no_argument | ||
217 | && has_equal) { | ||
218 | if (PRINT_ERROR) | ||
219 | warnx(noarg, (int)current_argv_len, | ||
220 | current_argv); | ||
221 | /* | ||
222 | * XXX: GNU sets optopt to val regardless of flag | ||
223 | */ | ||
224 | if (long_options[match].flag == NULL) | ||
225 | optopt = long_options[match].val; | ||
226 | else | ||
227 | optopt = 0; | ||
228 | return (BADARG); | ||
229 | } | ||
230 | if (long_options[match].has_arg == required_argument || | ||
231 | long_options[match].has_arg == optional_argument) { | ||
232 | if (has_equal) | ||
233 | optarg = has_equal; | ||
234 | else if (long_options[match].has_arg == | ||
235 | required_argument) { | ||
236 | /* | ||
237 | * optional argument doesn't use next nargv | ||
238 | */ | ||
239 | optarg = nargv[optind++]; | ||
240 | } | ||
241 | } | ||
242 | if ((long_options[match].has_arg == required_argument) | ||
243 | && (optarg == NULL)) { | ||
244 | /* | ||
245 | * Missing argument; leading ':' indicates no error | ||
246 | * should be generated. | ||
247 | */ | ||
248 | if (PRINT_ERROR) | ||
249 | warnx(recargstring, | ||
250 | current_argv); | ||
251 | /* | ||
252 | * XXX: GNU sets optopt to val regardless of flag | ||
253 | */ | ||
254 | if (long_options[match].flag == NULL) | ||
255 | optopt = long_options[match].val; | ||
256 | else | ||
257 | optopt = 0; | ||
258 | --optind; | ||
259 | return (BADARG); | ||
260 | } | ||
261 | } else { /* unknown option */ | ||
262 | if (short_too) { | ||
263 | --optind; | ||
264 | return (-1); | ||
265 | } | ||
266 | if (PRINT_ERROR) | ||
267 | warnx(illoptstring, current_argv); | ||
268 | optopt = 0; | ||
269 | return (BADCH); | ||
270 | } | ||
271 | if (idx) | ||
272 | *idx = match; | ||
273 | if (long_options[match].flag) { | ||
274 | *long_options[match].flag = long_options[match].val; | ||
275 | return (0); | ||
276 | } else | ||
277 | return (long_options[match].val); | ||
278 | } | ||
279 | |||
280 | /* | ||
281 | * getopt_internal -- | ||
282 | * Parse argc/argv argument vector. Called by user level routines. | ||
283 | */ | ||
284 | static int | ||
285 | getopt_internal(int nargc, char * const *nargv, const char *options, | ||
286 | const struct option *long_options, int *idx, int flags) | ||
287 | { | ||
288 | char *oli; /* option letter list index */ | ||
289 | int optchar, short_too; | ||
290 | static int posixly_correct = -1; | ||
291 | |||
292 | if (options == NULL) | ||
293 | return (-1); | ||
294 | |||
295 | /* | ||
296 | * XXX Some GNU programs (like cvs) set optind to 0 instead of | ||
297 | * XXX using optreset. Work around this braindamage. | ||
298 | */ | ||
299 | if (optind == 0) | ||
300 | optind = optreset = 1; | ||
301 | |||
302 | /* | ||
303 | * Disable GNU extensions if POSIXLY_CORRECT is set or options | ||
304 | * string begins with a '+'. | ||
305 | */ | ||
306 | if (posixly_correct == -1 || optreset) | ||
307 | posixly_correct = (getenv("POSIXLY_CORRECT") != NULL); | ||
308 | if (*options == '-') | ||
309 | flags |= FLAG_ALLARGS; | ||
310 | else if (posixly_correct || *options == '+') | ||
311 | flags &= ~FLAG_PERMUTE; | ||
312 | if (*options == '+' || *options == '-') | ||
313 | options++; | ||
314 | |||
315 | optarg = NULL; | ||
316 | if (optreset) | ||
317 | nonopt_start = nonopt_end = -1; | ||
318 | start: | ||
319 | if (optreset || !*place) { /* update scanning pointer */ | ||
320 | optreset = 0; | ||
321 | if (optind >= nargc) { /* end of argument vector */ | ||
322 | place = EMSG; | ||
323 | if (nonopt_end != -1) { | ||
324 | /* do permutation, if we have to */ | ||
325 | permute_args(nonopt_start, nonopt_end, | ||
326 | optind, nargv); | ||
327 | optind -= nonopt_end - nonopt_start; | ||
328 | } | ||
329 | else if (nonopt_start != -1) { | ||
330 | /* | ||
331 | * If we skipped non-options, set optind | ||
332 | * to the first of them. | ||
333 | */ | ||
334 | optind = nonopt_start; | ||
335 | } | ||
336 | nonopt_start = nonopt_end = -1; | ||
337 | return (-1); | ||
338 | } | ||
339 | if (*(place = nargv[optind]) != '-' || | ||
340 | (place[1] == '\0' && strchr(options, '-') == NULL)) { | ||
341 | place = EMSG; /* found non-option */ | ||
342 | if (flags & FLAG_ALLARGS) { | ||
343 | /* | ||
344 | * GNU extension: | ||
345 | * return non-option as argument to option 1 | ||
346 | */ | ||
347 | optarg = nargv[optind++]; | ||
348 | return (INORDER); | ||
349 | } | ||
350 | if (!(flags & FLAG_PERMUTE)) { | ||
351 | /* | ||
352 | * If no permutation wanted, stop parsing | ||
353 | * at first non-option. | ||
354 | */ | ||
355 | return (-1); | ||
356 | } | ||
357 | /* do permutation */ | ||
358 | if (nonopt_start == -1) | ||
359 | nonopt_start = optind; | ||
360 | else if (nonopt_end != -1) { | ||
361 | permute_args(nonopt_start, nonopt_end, | ||
362 | optind, nargv); | ||
363 | nonopt_start = optind - | ||
364 | (nonopt_end - nonopt_start); | ||
365 | nonopt_end = -1; | ||
366 | } | ||
367 | optind++; | ||
368 | /* process next argument */ | ||
369 | goto start; | ||
370 | } | ||
371 | if (nonopt_start != -1 && nonopt_end == -1) | ||
372 | nonopt_end = optind; | ||
373 | |||
374 | /* | ||
375 | * If we have "-" do nothing, if "--" we are done. | ||
376 | */ | ||
377 | if (place[1] != '\0' && *++place == '-' && place[1] == '\0') { | ||
378 | optind++; | ||
379 | place = EMSG; | ||
380 | /* | ||
381 | * We found an option (--), so if we skipped | ||
382 | * non-options, we have to permute. | ||
383 | */ | ||
384 | if (nonopt_end != -1) { | ||
385 | permute_args(nonopt_start, nonopt_end, | ||
386 | optind, nargv); | ||
387 | optind -= nonopt_end - nonopt_start; | ||
388 | } | ||
389 | nonopt_start = nonopt_end = -1; | ||
390 | return (-1); | ||
391 | } | ||
392 | } | ||
393 | |||
394 | /* | ||
395 | * Check long options if: | ||
396 | * 1) we were passed some | ||
397 | * 2) the arg is not just "-" | ||
398 | * 3) either the arg starts with -- we are getopt_long_only() | ||
399 | */ | ||
400 | if (long_options != NULL && place != nargv[optind] && | ||
401 | (*place == '-' || (flags & FLAG_LONGONLY))) { | ||
402 | short_too = 0; | ||
403 | if (*place == '-') | ||
404 | place++; /* --foo long option */ | ||
405 | else if (*place != ':' && strchr(options, *place) != NULL) | ||
406 | short_too = 1; /* could be short option too */ | ||
407 | |||
408 | optchar = parse_long_options(nargv, options, long_options, | ||
409 | idx, short_too); | ||
410 | if (optchar != -1) { | ||
411 | place = EMSG; | ||
412 | return (optchar); | ||
413 | } | ||
414 | } | ||
415 | |||
416 | if ((optchar = (int)*place++) == (int)':' || | ||
417 | (optchar == (int)'-' && *place != '\0') || | ||
418 | (oli = strchr(options, optchar)) == NULL) { | ||
419 | /* | ||
420 | * If the user specified "-" and '-' isn't listed in | ||
421 | * options, return -1 (non-option) as per POSIX. | ||
422 | * Otherwise, it is an unknown option character (or ':'). | ||
423 | */ | ||
424 | if (optchar == (int)'-' && *place == '\0') | ||
425 | return (-1); | ||
426 | if (!*place) | ||
427 | ++optind; | ||
428 | if (PRINT_ERROR) | ||
429 | warnx(illoptchar, optchar); | ||
430 | optopt = optchar; | ||
431 | return (BADCH); | ||
432 | } | ||
433 | if (long_options != NULL && optchar == 'W' && oli[1] == ';') { | ||
434 | /* -W long-option */ | ||
435 | if (*place) /* no space */ | ||
436 | /* NOTHING */; | ||
437 | else if (++optind >= nargc) { /* no arg */ | ||
438 | place = EMSG; | ||
439 | if (PRINT_ERROR) | ||
440 | warnx(recargchar, optchar); | ||
441 | optopt = optchar; | ||
442 | return (BADARG); | ||
443 | } else /* white space */ | ||
444 | place = nargv[optind]; | ||
445 | optchar = parse_long_options(nargv, options, long_options, | ||
446 | idx, 0); | ||
447 | place = EMSG; | ||
448 | return (optchar); | ||
449 | } | ||
450 | if (*++oli != ':') { /* doesn't take argument */ | ||
451 | if (!*place) | ||
452 | ++optind; | ||
453 | } else { /* takes (optional) argument */ | ||
454 | optarg = NULL; | ||
455 | if (*place) /* no white space */ | ||
456 | optarg = place; | ||
457 | else if (oli[1] != ':') { /* arg not optional */ | ||
458 | if (++optind >= nargc) { /* no arg */ | ||
459 | place = EMSG; | ||
460 | if (PRINT_ERROR) | ||
461 | warnx(recargchar, optchar); | ||
462 | optopt = optchar; | ||
463 | return (BADARG); | ||
464 | } else | ||
465 | optarg = nargv[optind]; | ||
466 | } | ||
467 | place = EMSG; | ||
468 | ++optind; | ||
469 | } | ||
470 | /* dump back option letter */ | ||
471 | return (optchar); | ||
472 | } | ||
473 | |||
474 | /* | ||
475 | * getopt -- | ||
476 | * Parse argc/argv argument vector. | ||
477 | * | ||
478 | * [eventually this will replace the BSD getopt] | ||
479 | */ | ||
480 | int | ||
481 | getopt(int nargc, char * const *nargv, const char *options) | ||
482 | { | ||
483 | |||
484 | /* | ||
485 | * We don't pass FLAG_PERMUTE to getopt_internal() since | ||
486 | * the BSD getopt(3) (unlike GNU) has never done this. | ||
487 | * | ||
488 | * Furthermore, since many privileged programs call getopt() | ||
489 | * before dropping privileges it makes sense to keep things | ||
490 | * as simple (and bug-free) as possible. | ||
491 | */ | ||
492 | return (getopt_internal(nargc, nargv, options, NULL, NULL, 0)); | ||
493 | } | ||
494 | |||
495 | #if 0 | ||
496 | /* | ||
497 | * getopt_long -- | ||
498 | * Parse argc/argv argument vector. | ||
499 | */ | ||
500 | int | ||
501 | getopt_long(int nargc, char * const *nargv, const char *options, | ||
502 | const struct option *long_options, int *idx) | ||
503 | { | ||
504 | |||
505 | return (getopt_internal(nargc, nargv, options, long_options, idx, | ||
506 | FLAG_PERMUTE)); | ||
507 | } | ||
508 | |||
509 | /* | ||
510 | * getopt_long_only -- | ||
511 | * Parse argc/argv argument vector. | ||
512 | */ | ||
513 | int | ||
514 | getopt_long_only(int nargc, char * const *nargv, const char *options, | ||
515 | const struct option *long_options, int *idx) | ||
516 | { | ||
517 | |||
518 | return (getopt_internal(nargc, nargv, options, long_options, idx, | ||
519 | FLAG_PERMUTE|FLAG_LONGONLY)); | ||
520 | } | ||
521 | #endif | ||
522 | |||
523 | #endif /* !defined(HAVE_GETOPT) */ | ||