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| 1 /* Getopt for GNU. |
| 2 NOTE: getopt is now part of the C library, so if you don't know what |
| 3 "Keep this file name-space clean" means, talk to drepper@gnu.org |
| 4 before changing it! |
| 5 Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001,2002,2003,2004,
2006,2008 |
| 6 Free Software Foundation, Inc. |
| 7 This file is part of the GNU C Library. |
| 8 |
| 9 This program is free software: you can redistribute it and/or modify |
| 10 it under the terms of the GNU General Public License as published by |
| 11 the Free Software Foundation; either version 3 of the License, or |
| 12 (at your option) any later version. |
| 13 |
| 14 This program 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 |
| 17 GNU General Public License for more details. |
| 18 |
| 19 You should have received a copy of the GNU General Public License |
| 20 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 |
| 22 #ifndef _LIBC |
| 23 # include <config.h> |
| 24 #endif |
| 25 |
| 26 #include "getopt.h" |
| 27 |
| 28 #include <stdio.h> |
| 29 #include <stdlib.h> |
| 30 #include <string.h> |
| 31 #include <unistd.h> |
| 32 |
| 33 #ifdef _LIBC |
| 34 # include <libintl.h> |
| 35 #else |
| 36 # include "gettext.h" |
| 37 # define _(msgid) gettext (msgid) |
| 38 #endif |
| 39 |
| 40 #if defined _LIBC && defined USE_IN_LIBIO |
| 41 # include <wchar.h> |
| 42 #endif |
| 43 |
| 44 #ifndef attribute_hidden |
| 45 # define attribute_hidden |
| 46 #endif |
| 47 |
| 48 /* Unlike standard Unix `getopt', functions like `getopt_long' |
| 49 let the user intersperse the options with the other arguments. |
| 50 |
| 51 As `getopt_long' works, it permutes the elements of ARGV so that, |
| 52 when it is done, all the options precede everything else. Thus |
| 53 all application programs are extended to handle flexible argument order. |
| 54 |
| 55 Using `getopt' or setting the environment variable POSIXLY_CORRECT |
| 56 disables permutation. |
| 57 Then the application's behavior is completely standard. |
| 58 |
| 59 GNU application programs can use a third alternative mode in which |
| 60 they can distinguish the relative order of options and other arguments. */ |
| 61 |
| 62 #include "getopt_int.h" |
| 63 |
| 64 /* For communication from `getopt' to the caller. |
| 65 When `getopt' finds an option that takes an argument, |
| 66 the argument value is returned here. |
| 67 Also, when `ordering' is RETURN_IN_ORDER, |
| 68 each non-option ARGV-element is returned here. */ |
| 69 |
| 70 char *optarg; |
| 71 |
| 72 /* Index in ARGV of the next element to be scanned. |
| 73 This is used for communication to and from the caller |
| 74 and for communication between successive calls to `getopt'. |
| 75 |
| 76 On entry to `getopt', zero means this is the first call; initialize. |
| 77 |
| 78 When `getopt' returns -1, this is the index of the first of the |
| 79 non-option elements that the caller should itself scan. |
| 80 |
| 81 Otherwise, `optind' communicates from one call to the next |
| 82 how much of ARGV has been scanned so far. */ |
| 83 |
| 84 /* 1003.2 says this must be 1 before any call. */ |
| 85 int optind = 1; |
| 86 |
| 87 /* Callers store zero here to inhibit the error message |
| 88 for unrecognized options. */ |
| 89 |
| 90 int opterr = 1; |
| 91 |
| 92 /* Set to an option character which was unrecognized. |
| 93 This must be initialized on some systems to avoid linking in the |
| 94 system's own getopt implementation. */ |
| 95 |
| 96 int optopt = '?'; |
| 97 |
| 98 /* Keep a global copy of all internal members of getopt_data. */ |
| 99 |
| 100 static struct _getopt_data getopt_data; |
| 101 |
| 102 |
| 103 #if defined HAVE_DECL_GETENV && !HAVE_DECL_GETENV |
| 104 extern char *getenv (); |
| 105 #endif |
| 106 |
| 107 #ifdef _LIBC |
| 108 /* Stored original parameters. |
| 109 XXX This is no good solution. We should rather copy the args so |
| 110 that we can compare them later. But we must not use malloc(3). */ |
| 111 extern int __libc_argc; |
| 112 extern char **__libc_argv; |
| 113 |
| 114 /* Bash 2.0 gives us an environment variable containing flags |
| 115 indicating ARGV elements that should not be considered arguments. */ |
| 116 |
| 117 # ifdef USE_NONOPTION_FLAGS |
| 118 /* Defined in getopt_init.c */ |
| 119 extern char *__getopt_nonoption_flags; |
| 120 # endif |
| 121 |
| 122 # ifdef USE_NONOPTION_FLAGS |
| 123 # define SWAP_FLAGS(ch1, ch2) \ |
| 124 if (d->__nonoption_flags_len > 0) \ |
| 125 { \ |
| 126 char __tmp = __getopt_nonoption_flags[ch1]; \ |
| 127 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ |
| 128 __getopt_nonoption_flags[ch2] = __tmp; \ |
| 129 } |
| 130 # else |
| 131 # define SWAP_FLAGS(ch1, ch2) |
| 132 # endif |
| 133 #else /* !_LIBC */ |
| 134 # define SWAP_FLAGS(ch1, ch2) |
| 135 #endif /* _LIBC */ |
| 136 |
| 137 /* Exchange two adjacent subsequences of ARGV. |
| 138 One subsequence is elements [first_nonopt,last_nonopt) |
| 139 which contains all the non-options that have been skipped so far. |
| 140 The other is elements [last_nonopt,optind), which contains all |
| 141 the options processed since those non-options were skipped. |
| 142 |
| 143 `first_nonopt' and `last_nonopt' are relocated so that they describe |
| 144 the new indices of the non-options in ARGV after they are moved. */ |
| 145 |
| 146 static void |
| 147 exchange (char **argv, struct _getopt_data *d) |
| 148 { |
| 149 int bottom = d->__first_nonopt; |
| 150 int middle = d->__last_nonopt; |
| 151 int top = d->optind; |
| 152 char *tem; |
| 153 |
| 154 /* Exchange the shorter segment with the far end of the longer segment. |
| 155 That puts the shorter segment into the right place. |
| 156 It leaves the longer segment in the right place overall, |
| 157 but it consists of two parts that need to be swapped next. */ |
| 158 |
| 159 #if defined _LIBC && defined USE_NONOPTION_FLAGS |
| 160 /* First make sure the handling of the `__getopt_nonoption_flags' |
| 161 string can work normally. Our top argument must be in the range |
| 162 of the string. */ |
| 163 if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len) |
| 164 { |
| 165 /* We must extend the array. The user plays games with us and |
| 166 presents new arguments. */ |
| 167 char *new_str = malloc (top + 1); |
| 168 if (new_str == NULL) |
| 169 d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0; |
| 170 else |
| 171 { |
| 172 memset (__mempcpy (new_str, __getopt_nonoption_flags, |
| 173 d->__nonoption_flags_max_len), |
| 174 '\0', top + 1 - d->__nonoption_flags_max_len); |
| 175 d->__nonoption_flags_max_len = top + 1; |
| 176 __getopt_nonoption_flags = new_str; |
| 177 } |
| 178 } |
| 179 #endif |
| 180 |
| 181 while (top > middle && middle > bottom) |
| 182 { |
| 183 if (top - middle > middle - bottom) |
| 184 { |
| 185 /* Bottom segment is the short one. */ |
| 186 int len = middle - bottom; |
| 187 register int i; |
| 188 |
| 189 /* Swap it with the top part of the top segment. */ |
| 190 for (i = 0; i < len; i++) |
| 191 { |
| 192 tem = argv[bottom + i]; |
| 193 argv[bottom + i] = argv[top - (middle - bottom) + i]; |
| 194 argv[top - (middle - bottom) + i] = tem; |
| 195 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); |
| 196 } |
| 197 /* Exclude the moved bottom segment from further swapping. */ |
| 198 top -= len; |
| 199 } |
| 200 else |
| 201 { |
| 202 /* Top segment is the short one. */ |
| 203 int len = top - middle; |
| 204 register int i; |
| 205 |
| 206 /* Swap it with the bottom part of the bottom segment. */ |
| 207 for (i = 0; i < len; i++) |
| 208 { |
| 209 tem = argv[bottom + i]; |
| 210 argv[bottom + i] = argv[middle + i]; |
| 211 argv[middle + i] = tem; |
| 212 SWAP_FLAGS (bottom + i, middle + i); |
| 213 } |
| 214 /* Exclude the moved top segment from further swapping. */ |
| 215 bottom += len; |
| 216 } |
| 217 } |
| 218 |
| 219 /* Update records for the slots the non-options now occupy. */ |
| 220 |
| 221 d->__first_nonopt += (d->optind - d->__last_nonopt); |
| 222 d->__last_nonopt = d->optind; |
| 223 } |
| 224 |
| 225 /* Initialize the internal data when the first call is made. */ |
| 226 |
| 227 static const char * |
| 228 _getopt_initialize (int argc, char **argv, const char *optstring, |
| 229 int posixly_correct, struct _getopt_data *d) |
| 230 { |
| 231 /* Start processing options with ARGV-element 1 (since ARGV-element 0 |
| 232 is the program name); the sequence of previously skipped |
| 233 non-option ARGV-elements is empty. */ |
| 234 |
| 235 d->__first_nonopt = d->__last_nonopt = d->optind; |
| 236 |
| 237 d->__nextchar = NULL; |
| 238 |
| 239 d->__posixly_correct = posixly_correct || !!getenv ("POSIXLY_CORRECT"); |
| 240 |
| 241 /* Determine how to handle the ordering of options and nonoptions. */ |
| 242 |
| 243 if (optstring[0] == '-') |
| 244 { |
| 245 d->__ordering = RETURN_IN_ORDER; |
| 246 ++optstring; |
| 247 } |
| 248 else if (optstring[0] == '+') |
| 249 { |
| 250 d->__ordering = REQUIRE_ORDER; |
| 251 ++optstring; |
| 252 } |
| 253 else if (d->__posixly_correct) |
| 254 d->__ordering = REQUIRE_ORDER; |
| 255 else |
| 256 d->__ordering = PERMUTE; |
| 257 |
| 258 #if defined _LIBC && defined USE_NONOPTION_FLAGS |
| 259 if (!d->__posixly_correct |
| 260 && argc == __libc_argc && argv == __libc_argv) |
| 261 { |
| 262 if (d->__nonoption_flags_max_len == 0) |
| 263 { |
| 264 if (__getopt_nonoption_flags == NULL |
| 265 || __getopt_nonoption_flags[0] == '\0') |
| 266 d->__nonoption_flags_max_len = -1; |
| 267 else |
| 268 { |
| 269 const char *orig_str = __getopt_nonoption_flags; |
| 270 int len = d->__nonoption_flags_max_len = strlen (orig_str); |
| 271 if (d->__nonoption_flags_max_len < argc) |
| 272 d->__nonoption_flags_max_len = argc; |
| 273 __getopt_nonoption_flags = |
| 274 (char *) malloc (d->__nonoption_flags_max_len); |
| 275 if (__getopt_nonoption_flags == NULL) |
| 276 d->__nonoption_flags_max_len = -1; |
| 277 else |
| 278 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), |
| 279 '\0', d->__nonoption_flags_max_len - len); |
| 280 } |
| 281 } |
| 282 d->__nonoption_flags_len = d->__nonoption_flags_max_len; |
| 283 } |
| 284 else |
| 285 d->__nonoption_flags_len = 0; |
| 286 #endif |
| 287 |
| 288 return optstring; |
| 289 } |
| 290 |
| 291 /* Scan elements of ARGV (whose length is ARGC) for option characters |
| 292 given in OPTSTRING. |
| 293 |
| 294 If an element of ARGV starts with '-', and is not exactly "-" or "--", |
| 295 then it is an option element. The characters of this element |
| 296 (aside from the initial '-') are option characters. If `getopt' |
| 297 is called repeatedly, it returns successively each of the option characters |
| 298 from each of the option elements. |
| 299 |
| 300 If `getopt' finds another option character, it returns that character, |
| 301 updating `optind' and `nextchar' so that the next call to `getopt' can |
| 302 resume the scan with the following option character or ARGV-element. |
| 303 |
| 304 If there are no more option characters, `getopt' returns -1. |
| 305 Then `optind' is the index in ARGV of the first ARGV-element |
| 306 that is not an option. (The ARGV-elements have been permuted |
| 307 so that those that are not options now come last.) |
| 308 |
| 309 OPTSTRING is a string containing the legitimate option characters. |
| 310 If an option character is seen that is not listed in OPTSTRING, |
| 311 return '?' after printing an error message. If you set `opterr' to |
| 312 zero, the error message is suppressed but we still return '?'. |
| 313 |
| 314 If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
| 315 so the following text in the same ARGV-element, or the text of the following |
| 316 ARGV-element, is returned in `optarg'. Two colons mean an option that |
| 317 wants an optional arg; if there is text in the current ARGV-element, |
| 318 it is returned in `optarg', otherwise `optarg' is set to zero. |
| 319 |
| 320 If OPTSTRING starts with `-' or `+', it requests different methods of |
| 321 handling the non-option ARGV-elements. |
| 322 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
| 323 |
| 324 Long-named options begin with `--' instead of `-'. |
| 325 Their names may be abbreviated as long as the abbreviation is unique |
| 326 or is an exact match for some defined option. If they have an |
| 327 argument, it follows the option name in the same ARGV-element, separated |
| 328 from the option name by a `=', or else the in next ARGV-element. |
| 329 When `getopt' finds a long-named option, it returns 0 if that option's |
| 330 `flag' field is nonzero, the value of the option's `val' field |
| 331 if the `flag' field is zero. |
| 332 |
| 333 LONGOPTS is a vector of `struct option' terminated by an |
| 334 element containing a name which is zero. |
| 335 |
| 336 LONGIND returns the index in LONGOPT of the long-named option found. |
| 337 It is only valid when a long-named option has been found by the most |
| 338 recent call. |
| 339 |
| 340 If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
| 341 long-named options. |
| 342 |
| 343 If POSIXLY_CORRECT is nonzero, behave as if the POSIXLY_CORRECT |
| 344 environment variable were set. */ |
| 345 |
| 346 int |
| 347 _getopt_internal_r (int argc, char **argv, const char *optstring, |
| 348 const struct option *longopts, int *longind, |
| 349 int long_only, int posixly_correct, struct _getopt_data *d) |
| 350 { |
| 351 int print_errors = d->opterr; |
| 352 if (optstring[0] == ':') |
| 353 print_errors = 0; |
| 354 |
| 355 if (argc < 1) |
| 356 return -1; |
| 357 |
| 358 d->optarg = NULL; |
| 359 |
| 360 if (d->optind == 0 || !d->__initialized) |
| 361 { |
| 362 if (d->optind == 0) |
| 363 d->optind = 1; /* Don't scan ARGV[0], the program name. */ |
| 364 optstring = _getopt_initialize (argc, argv, optstring, |
| 365 posixly_correct, d); |
| 366 d->__initialized = 1; |
| 367 } |
| 368 |
| 369 /* Test whether ARGV[optind] points to a non-option argument. |
| 370 Either it does not have option syntax, or there is an environment flag |
| 371 from the shell indicating it is not an option. The later information |
| 372 is only used when the used in the GNU libc. */ |
| 373 #if defined _LIBC && defined USE_NONOPTION_FLAGS |
| 374 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \ |
| 375 || (d->optind < d->__nonoption_flags_len \ |
| 376 && __getopt_nonoption_flags[d->optind] == '1')) |
| 377 #else |
| 378 # define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0') |
| 379 #endif |
| 380 |
| 381 if (d->__nextchar == NULL || *d->__nextchar == '\0') |
| 382 { |
| 383 /* Advance to the next ARGV-element. */ |
| 384 |
| 385 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been |
| 386 moved back by the user (who may also have changed the arguments). */ |
| 387 if (d->__last_nonopt > d->optind) |
| 388 d->__last_nonopt = d->optind; |
| 389 if (d->__first_nonopt > d->optind) |
| 390 d->__first_nonopt = d->optind; |
| 391 |
| 392 if (d->__ordering == PERMUTE) |
| 393 { |
| 394 /* If we have just processed some options following some non-options, |
| 395 exchange them so that the options come first. */ |
| 396 |
| 397 if (d->__first_nonopt != d->__last_nonopt |
| 398 && d->__last_nonopt != d->optind) |
| 399 exchange ((char **) argv, d); |
| 400 else if (d->__last_nonopt != d->optind) |
| 401 d->__first_nonopt = d->optind; |
| 402 |
| 403 /* Skip any additional non-options |
| 404 and extend the range of non-options previously skipped. */ |
| 405 |
| 406 while (d->optind < argc && NONOPTION_P) |
| 407 d->optind++; |
| 408 d->__last_nonopt = d->optind; |
| 409 } |
| 410 |
| 411 /* The special ARGV-element `--' means premature end of options. |
| 412 Skip it like a null option, |
| 413 then exchange with previous non-options as if it were an option, |
| 414 then skip everything else like a non-option. */ |
| 415 |
| 416 if (d->optind != argc && !strcmp (argv[d->optind], "--")) |
| 417 { |
| 418 d->optind++; |
| 419 |
| 420 if (d->__first_nonopt != d->__last_nonopt |
| 421 && d->__last_nonopt != d->optind) |
| 422 exchange ((char **) argv, d); |
| 423 else if (d->__first_nonopt == d->__last_nonopt) |
| 424 d->__first_nonopt = d->optind; |
| 425 d->__last_nonopt = argc; |
| 426 |
| 427 d->optind = argc; |
| 428 } |
| 429 |
| 430 /* If we have done all the ARGV-elements, stop the scan |
| 431 and back over any non-options that we skipped and permuted. */ |
| 432 |
| 433 if (d->optind == argc) |
| 434 { |
| 435 /* Set the next-arg-index to point at the non-options |
| 436 that we previously skipped, so the caller will digest them. */ |
| 437 if (d->__first_nonopt != d->__last_nonopt) |
| 438 d->optind = d->__first_nonopt; |
| 439 return -1; |
| 440 } |
| 441 |
| 442 /* If we have come to a non-option and did not permute it, |
| 443 either stop the scan or describe it to the caller and pass it by. */ |
| 444 |
| 445 if (NONOPTION_P) |
| 446 { |
| 447 if (d->__ordering == REQUIRE_ORDER) |
| 448 return -1; |
| 449 d->optarg = argv[d->optind++]; |
| 450 return 1; |
| 451 } |
| 452 |
| 453 /* We have found another option-ARGV-element. |
| 454 Skip the initial punctuation. */ |
| 455 |
| 456 d->__nextchar = (argv[d->optind] + 1 |
| 457 + (longopts != NULL && argv[d->optind][1] == '-')); |
| 458 } |
| 459 |
| 460 /* Decode the current option-ARGV-element. */ |
| 461 |
| 462 /* Check whether the ARGV-element is a long option. |
| 463 |
| 464 If long_only and the ARGV-element has the form "-f", where f is |
| 465 a valid short option, don't consider it an abbreviated form of |
| 466 a long option that starts with f. Otherwise there would be no |
| 467 way to give the -f short option. |
| 468 |
| 469 On the other hand, if there's a long option "fubar" and |
| 470 the ARGV-element is "-fu", do consider that an abbreviation of |
| 471 the long option, just like "--fu", and not "-f" with arg "u". |
| 472 |
| 473 This distinction seems to be the most useful approach. */ |
| 474 |
| 475 if (longopts != NULL |
| 476 && (argv[d->optind][1] == '-' |
| 477 || (long_only && (argv[d->optind][2] |
| 478 || !strchr (optstring, argv[d->optind][1]))))) |
| 479 { |
| 480 char *nameend; |
| 481 const struct option *p; |
| 482 const struct option *pfound = NULL; |
| 483 int exact = 0; |
| 484 int ambig = 0; |
| 485 int indfound = -1; |
| 486 int option_index; |
| 487 |
| 488 for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++) |
| 489 /* Do nothing. */ ; |
| 490 |
| 491 /* Test all long options for either exact match |
| 492 or abbreviated matches. */ |
| 493 for (p = longopts, option_index = 0; p->name; p++, option_index++) |
| 494 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar)) |
| 495 { |
| 496 if ((unsigned int) (nameend - d->__nextchar) |
| 497 == (unsigned int) strlen (p->name)) |
| 498 { |
| 499 /* Exact match found. */ |
| 500 pfound = p; |
| 501 indfound = option_index; |
| 502 exact = 1; |
| 503 break; |
| 504 } |
| 505 else if (pfound == NULL) |
| 506 { |
| 507 /* First nonexact match found. */ |
| 508 pfound = p; |
| 509 indfound = option_index; |
| 510 } |
| 511 else if (long_only |
| 512 || pfound->has_arg != p->has_arg |
| 513 || pfound->flag != p->flag |
| 514 || pfound->val != p->val) |
| 515 /* Second or later nonexact match found. */ |
| 516 ambig = 1; |
| 517 } |
| 518 |
| 519 if (ambig && !exact) |
| 520 { |
| 521 if (print_errors) |
| 522 { |
| 523 #if defined _LIBC && defined USE_IN_LIBIO |
| 524 char *buf; |
| 525 |
| 526 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"), |
| 527 argv[0], argv[d->optind]) >= 0) |
| 528 { |
| 529 _IO_flockfile (stderr); |
| 530 |
| 531 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 532 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; |
| 533 |
| 534 __fxprintf (NULL, "%s", buf); |
| 535 |
| 536 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 537 _IO_funlockfile (stderr); |
| 538 |
| 539 free (buf); |
| 540 } |
| 541 #else |
| 542 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
| 543 argv[0], argv[d->optind]); |
| 544 #endif |
| 545 } |
| 546 d->__nextchar += strlen (d->__nextchar); |
| 547 d->optind++; |
| 548 d->optopt = 0; |
| 549 return '?'; |
| 550 } |
| 551 |
| 552 if (pfound != NULL) |
| 553 { |
| 554 option_index = indfound; |
| 555 d->optind++; |
| 556 if (*nameend) |
| 557 { |
| 558 /* Don't test has_arg with >, because some C compilers don't |
| 559 allow it to be used on enums. */ |
| 560 if (pfound->has_arg) |
| 561 d->optarg = nameend + 1; |
| 562 else |
| 563 { |
| 564 if (print_errors) |
| 565 { |
| 566 #if defined _LIBC && defined USE_IN_LIBIO |
| 567 char *buf; |
| 568 int n; |
| 569 #endif |
| 570 |
| 571 if (argv[d->optind - 1][1] == '-') |
| 572 { |
| 573 /* --option */ |
| 574 #if defined _LIBC && defined USE_IN_LIBIO |
| 575 n = __asprintf (&buf, _("\ |
| 576 %s: option `--%s' doesn't allow an argument\n"), |
| 577 argv[0], pfound->name); |
| 578 #else |
| 579 fprintf (stderr, _("\ |
| 580 %s: option `--%s' doesn't allow an argument\n"), |
| 581 argv[0], pfound->name); |
| 582 #endif |
| 583 } |
| 584 else |
| 585 { |
| 586 /* +option or -option */ |
| 587 #if defined _LIBC && defined USE_IN_LIBIO |
| 588 n = __asprintf (&buf, _("\ |
| 589 %s: option `%c%s' doesn't allow an argument\n"), |
| 590 argv[0], argv[d->optind - 1][0], |
| 591 pfound->name); |
| 592 #else |
| 593 fprintf (stderr, _("\ |
| 594 %s: option `%c%s' doesn't allow an argument\n"), |
| 595 argv[0], argv[d->optind - 1][0], |
| 596 pfound->name); |
| 597 #endif |
| 598 } |
| 599 |
| 600 #if defined _LIBC && defined USE_IN_LIBIO |
| 601 if (n >= 0) |
| 602 { |
| 603 _IO_flockfile (stderr); |
| 604 |
| 605 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 606 ((_IO_FILE *) stderr)->_flags2 |
| 607 |= _IO_FLAGS2_NOTCANCEL; |
| 608 |
| 609 __fxprintf (NULL, "%s", buf); |
| 610 |
| 611 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 612 _IO_funlockfile (stderr); |
| 613 |
| 614 free (buf); |
| 615 } |
| 616 #endif |
| 617 } |
| 618 |
| 619 d->__nextchar += strlen (d->__nextchar); |
| 620 |
| 621 d->optopt = pfound->val; |
| 622 return '?'; |
| 623 } |
| 624 } |
| 625 else if (pfound->has_arg == 1) |
| 626 { |
| 627 if (d->optind < argc) |
| 628 d->optarg = argv[d->optind++]; |
| 629 else |
| 630 { |
| 631 if (print_errors) |
| 632 { |
| 633 #if defined _LIBC && defined USE_IN_LIBIO |
| 634 char *buf; |
| 635 |
| 636 if (__asprintf (&buf, _("\ |
| 637 %s: option `%s' requires an argument\n"), |
| 638 argv[0], argv[d->optind - 1]) >= 0) |
| 639 { |
| 640 _IO_flockfile (stderr); |
| 641 |
| 642 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 643 ((_IO_FILE *) stderr)->_flags2 |
| 644 |= _IO_FLAGS2_NOTCANCEL; |
| 645 |
| 646 __fxprintf (NULL, "%s", buf); |
| 647 |
| 648 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 649 _IO_funlockfile (stderr); |
| 650 |
| 651 free (buf); |
| 652 } |
| 653 #else |
| 654 fprintf (stderr, |
| 655 _("%s: option `%s' requires an argument\n"), |
| 656 argv[0], argv[d->optind - 1]); |
| 657 #endif |
| 658 } |
| 659 d->__nextchar += strlen (d->__nextchar); |
| 660 d->optopt = pfound->val; |
| 661 return optstring[0] == ':' ? ':' : '?'; |
| 662 } |
| 663 } |
| 664 d->__nextchar += strlen (d->__nextchar); |
| 665 if (longind != NULL) |
| 666 *longind = option_index; |
| 667 if (pfound->flag) |
| 668 { |
| 669 *(pfound->flag) = pfound->val; |
| 670 return 0; |
| 671 } |
| 672 return pfound->val; |
| 673 } |
| 674 |
| 675 /* Can't find it as a long option. If this is not getopt_long_only, |
| 676 or the option starts with '--' or is not a valid short |
| 677 option, then it's an error. |
| 678 Otherwise interpret it as a short option. */ |
| 679 if (!long_only || argv[d->optind][1] == '-' |
| 680 || strchr (optstring, *d->__nextchar) == NULL) |
| 681 { |
| 682 if (print_errors) |
| 683 { |
| 684 #if defined _LIBC && defined USE_IN_LIBIO |
| 685 char *buf; |
| 686 int n; |
| 687 #endif |
| 688 |
| 689 if (argv[d->optind][1] == '-') |
| 690 { |
| 691 /* --option */ |
| 692 #if defined _LIBC && defined USE_IN_LIBIO |
| 693 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"), |
| 694 argv[0], d->__nextchar); |
| 695 #else |
| 696 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
| 697 argv[0], d->__nextchar); |
| 698 #endif |
| 699 } |
| 700 else |
| 701 { |
| 702 /* +option or -option */ |
| 703 #if defined _LIBC && defined USE_IN_LIBIO |
| 704 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"), |
| 705 argv[0], argv[d->optind][0], d->__nextchar); |
| 706 #else |
| 707 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
| 708 argv[0], argv[d->optind][0], d->__nextchar); |
| 709 #endif |
| 710 } |
| 711 |
| 712 #if defined _LIBC && defined USE_IN_LIBIO |
| 713 if (n >= 0) |
| 714 { |
| 715 _IO_flockfile (stderr); |
| 716 |
| 717 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 718 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; |
| 719 |
| 720 __fxprintf (NULL, "%s", buf); |
| 721 |
| 722 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 723 _IO_funlockfile (stderr); |
| 724 |
| 725 free (buf); |
| 726 } |
| 727 #endif |
| 728 } |
| 729 d->__nextchar = (char *) ""; |
| 730 d->optind++; |
| 731 d->optopt = 0; |
| 732 return '?'; |
| 733 } |
| 734 } |
| 735 |
| 736 /* Look at and handle the next short option-character. */ |
| 737 |
| 738 { |
| 739 char c = *d->__nextchar++; |
| 740 char *temp = strchr (optstring, c); |
| 741 |
| 742 /* Increment `optind' when we start to process its last character. */ |
| 743 if (*d->__nextchar == '\0') |
| 744 ++d->optind; |
| 745 |
| 746 if (temp == NULL || c == ':') |
| 747 { |
| 748 if (print_errors) |
| 749 { |
| 750 #if defined _LIBC && defined USE_IN_LIBIO |
| 751 char *buf; |
| 752 int n; |
| 753 #endif |
| 754 |
| 755 if (d->__posixly_correct) |
| 756 { |
| 757 /* 1003.2 specifies the format of this message. */ |
| 758 #if defined _LIBC && defined USE_IN_LIBIO |
| 759 n = __asprintf (&buf, _("%s: illegal option -- %c\n"), |
| 760 argv[0], c); |
| 761 #else |
| 762 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c); |
| 763 #endif |
| 764 } |
| 765 else |
| 766 { |
| 767 #if defined _LIBC && defined USE_IN_LIBIO |
| 768 n = __asprintf (&buf, _("%s: invalid option -- %c\n"), |
| 769 argv[0], c); |
| 770 #else |
| 771 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c); |
| 772 #endif |
| 773 } |
| 774 |
| 775 #if defined _LIBC && defined USE_IN_LIBIO |
| 776 if (n >= 0) |
| 777 { |
| 778 _IO_flockfile (stderr); |
| 779 |
| 780 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 781 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; |
| 782 |
| 783 __fxprintf (NULL, "%s", buf); |
| 784 |
| 785 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 786 _IO_funlockfile (stderr); |
| 787 |
| 788 free (buf); |
| 789 } |
| 790 #endif |
| 791 } |
| 792 d->optopt = c; |
| 793 return '?'; |
| 794 } |
| 795 /* Convenience. Treat POSIX -W foo same as long option --foo */ |
| 796 if (temp[0] == 'W' && temp[1] == ';') |
| 797 { |
| 798 char *nameend; |
| 799 const struct option *p; |
| 800 const struct option *pfound = NULL; |
| 801 int exact = 0; |
| 802 int ambig = 0; |
| 803 int indfound = 0; |
| 804 int option_index; |
| 805 |
| 806 /* This is an option that requires an argument. */ |
| 807 if (*d->__nextchar != '\0') |
| 808 { |
| 809 d->optarg = d->__nextchar; |
| 810 /* If we end this ARGV-element by taking the rest as an arg, |
| 811 we must advance to the next element now. */ |
| 812 d->optind++; |
| 813 } |
| 814 else if (d->optind == argc) |
| 815 { |
| 816 if (print_errors) |
| 817 { |
| 818 /* 1003.2 specifies the format of this message. */ |
| 819 #if defined _LIBC && defined USE_IN_LIBIO |
| 820 char *buf; |
| 821 |
| 822 if (__asprintf (&buf, |
| 823 _("%s: option requires an argument -- %c\n"), |
| 824 argv[0], c) >= 0) |
| 825 { |
| 826 _IO_flockfile (stderr); |
| 827 |
| 828 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 829 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; |
| 830 |
| 831 __fxprintf (NULL, "%s", buf); |
| 832 |
| 833 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 834 _IO_funlockfile (stderr); |
| 835 |
| 836 free (buf); |
| 837 } |
| 838 #else |
| 839 fprintf (stderr, _("%s: option requires an argument -- %c\n"), |
| 840 argv[0], c); |
| 841 #endif |
| 842 } |
| 843 d->optopt = c; |
| 844 if (optstring[0] == ':') |
| 845 c = ':'; |
| 846 else |
| 847 c = '?'; |
| 848 return c; |
| 849 } |
| 850 else |
| 851 /* We already incremented `d->optind' once; |
| 852 increment it again when taking next ARGV-elt as argument. */ |
| 853 d->optarg = argv[d->optind++]; |
| 854 |
| 855 /* optarg is now the argument, see if it's in the |
| 856 table of longopts. */ |
| 857 |
| 858 for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '='; |
| 859 nameend++) |
| 860 /* Do nothing. */ ; |
| 861 |
| 862 /* Test all long options for either exact match |
| 863 or abbreviated matches. */ |
| 864 for (p = longopts, option_index = 0; p->name; p++, option_index++) |
| 865 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar)) |
| 866 { |
| 867 if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name)) |
| 868 { |
| 869 /* Exact match found. */ |
| 870 pfound = p; |
| 871 indfound = option_index; |
| 872 exact = 1; |
| 873 break; |
| 874 } |
| 875 else if (pfound == NULL) |
| 876 { |
| 877 /* First nonexact match found. */ |
| 878 pfound = p; |
| 879 indfound = option_index; |
| 880 } |
| 881 else |
| 882 /* Second or later nonexact match found. */ |
| 883 ambig = 1; |
| 884 } |
| 885 if (ambig && !exact) |
| 886 { |
| 887 if (print_errors) |
| 888 { |
| 889 #if defined _LIBC && defined USE_IN_LIBIO |
| 890 char *buf; |
| 891 |
| 892 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"), |
| 893 argv[0], argv[d->optind]) >= 0) |
| 894 { |
| 895 _IO_flockfile (stderr); |
| 896 |
| 897 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 898 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; |
| 899 |
| 900 __fxprintf (NULL, "%s", buf); |
| 901 |
| 902 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 903 _IO_funlockfile (stderr); |
| 904 |
| 905 free (buf); |
| 906 } |
| 907 #else |
| 908 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), |
| 909 argv[0], argv[d->optind]); |
| 910 #endif |
| 911 } |
| 912 d->__nextchar += strlen (d->__nextchar); |
| 913 d->optind++; |
| 914 return '?'; |
| 915 } |
| 916 if (pfound != NULL) |
| 917 { |
| 918 option_index = indfound; |
| 919 if (*nameend) |
| 920 { |
| 921 /* Don't test has_arg with >, because some C compilers don't |
| 922 allow it to be used on enums. */ |
| 923 if (pfound->has_arg) |
| 924 d->optarg = nameend + 1; |
| 925 else |
| 926 { |
| 927 if (print_errors) |
| 928 { |
| 929 #if defined _LIBC && defined USE_IN_LIBIO |
| 930 char *buf; |
| 931 |
| 932 if (__asprintf (&buf, _("\ |
| 933 %s: option `-W %s' doesn't allow an argument\n"), |
| 934 argv[0], pfound->name) >= 0) |
| 935 { |
| 936 _IO_flockfile (stderr); |
| 937 |
| 938 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 939 ((_IO_FILE *) stderr)->_flags2 |
| 940 |= _IO_FLAGS2_NOTCANCEL; |
| 941 |
| 942 __fxprintf (NULL, "%s", buf); |
| 943 |
| 944 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 945 _IO_funlockfile (stderr); |
| 946 |
| 947 free (buf); |
| 948 } |
| 949 #else |
| 950 fprintf (stderr, _("\ |
| 951 %s: option `-W %s' doesn't allow an argument\n"), |
| 952 argv[0], pfound->name); |
| 953 #endif |
| 954 } |
| 955 |
| 956 d->__nextchar += strlen (d->__nextchar); |
| 957 return '?'; |
| 958 } |
| 959 } |
| 960 else if (pfound->has_arg == 1) |
| 961 { |
| 962 if (d->optind < argc) |
| 963 d->optarg = argv[d->optind++]; |
| 964 else |
| 965 { |
| 966 if (print_errors) |
| 967 { |
| 968 #if defined _LIBC && defined USE_IN_LIBIO |
| 969 char *buf; |
| 970 |
| 971 if (__asprintf (&buf, _("\ |
| 972 %s: option `%s' requires an argument\n"), |
| 973 argv[0], argv[d->optind - 1]) >= 0) |
| 974 { |
| 975 _IO_flockfile (stderr); |
| 976 |
| 977 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 978 ((_IO_FILE *) stderr)->_flags2 |
| 979 |= _IO_FLAGS2_NOTCANCEL; |
| 980 |
| 981 __fxprintf (NULL, "%s", buf); |
| 982 |
| 983 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 984 _IO_funlockfile (stderr); |
| 985 |
| 986 free (buf); |
| 987 } |
| 988 #else |
| 989 fprintf (stderr, |
| 990 _("%s: option `%s' requires an argument\n"), |
| 991 argv[0], argv[d->optind - 1]); |
| 992 #endif |
| 993 } |
| 994 d->__nextchar += strlen (d->__nextchar); |
| 995 return optstring[0] == ':' ? ':' : '?'; |
| 996 } |
| 997 } |
| 998 d->__nextchar += strlen (d->__nextchar); |
| 999 if (longind != NULL) |
| 1000 *longind = option_index; |
| 1001 if (pfound->flag) |
| 1002 { |
| 1003 *(pfound->flag) = pfound->val; |
| 1004 return 0; |
| 1005 } |
| 1006 return pfound->val; |
| 1007 } |
| 1008 d->__nextchar = NULL; |
| 1009 return 'W'; /* Let the application handle it. */ |
| 1010 } |
| 1011 if (temp[1] == ':') |
| 1012 { |
| 1013 if (temp[2] == ':') |
| 1014 { |
| 1015 /* This is an option that accepts an argument optionally. */ |
| 1016 if (*d->__nextchar != '\0') |
| 1017 { |
| 1018 d->optarg = d->__nextchar; |
| 1019 d->optind++; |
| 1020 } |
| 1021 else |
| 1022 d->optarg = NULL; |
| 1023 d->__nextchar = NULL; |
| 1024 } |
| 1025 else |
| 1026 { |
| 1027 /* This is an option that requires an argument. */ |
| 1028 if (*d->__nextchar != '\0') |
| 1029 { |
| 1030 d->optarg = d->__nextchar; |
| 1031 /* If we end this ARGV-element by taking the rest as an arg, |
| 1032 we must advance to the next element now. */ |
| 1033 d->optind++; |
| 1034 } |
| 1035 else if (d->optind == argc) |
| 1036 { |
| 1037 if (print_errors) |
| 1038 { |
| 1039 /* 1003.2 specifies the format of this message. */ |
| 1040 #if defined _LIBC && defined USE_IN_LIBIO |
| 1041 char *buf; |
| 1042 |
| 1043 if (__asprintf (&buf, _("\ |
| 1044 %s: option requires an argument -- %c\n"), |
| 1045 argv[0], c) >= 0) |
| 1046 { |
| 1047 _IO_flockfile (stderr); |
| 1048 |
| 1049 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; |
| 1050 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; |
| 1051 |
| 1052 __fxprintf (NULL, "%s", buf); |
| 1053 |
| 1054 ((_IO_FILE *) stderr)->_flags2 = old_flags2; |
| 1055 _IO_funlockfile (stderr); |
| 1056 |
| 1057 free (buf); |
| 1058 } |
| 1059 #else |
| 1060 fprintf (stderr, |
| 1061 _("%s: option requires an argument -- %c\n"), |
| 1062 argv[0], c); |
| 1063 #endif |
| 1064 } |
| 1065 d->optopt = c; |
| 1066 if (optstring[0] == ':') |
| 1067 c = ':'; |
| 1068 else |
| 1069 c = '?'; |
| 1070 } |
| 1071 else |
| 1072 /* We already incremented `optind' once; |
| 1073 increment it again when taking next ARGV-elt as argument. */ |
| 1074 d->optarg = argv[d->optind++]; |
| 1075 d->__nextchar = NULL; |
| 1076 } |
| 1077 } |
| 1078 return c; |
| 1079 } |
| 1080 } |
| 1081 |
| 1082 int |
| 1083 _getopt_internal (int argc, char **argv, const char *optstring, |
| 1084 const struct option *longopts, int *longind, |
| 1085 int long_only, int posixly_correct) |
| 1086 { |
| 1087 int result; |
| 1088 |
| 1089 getopt_data.optind = optind; |
| 1090 getopt_data.opterr = opterr; |
| 1091 |
| 1092 result = _getopt_internal_r (argc, argv, optstring, longopts, longind, |
| 1093 long_only, posixly_correct, &getopt_data); |
| 1094 |
| 1095 optind = getopt_data.optind; |
| 1096 optarg = getopt_data.optarg; |
| 1097 optopt = getopt_data.optopt; |
| 1098 |
| 1099 return result; |
| 1100 } |
| 1101 |
| 1102 /* glibc gets a LSB-compliant getopt. |
| 1103 Standalone applications get a POSIX-compliant getopt. */ |
| 1104 #if _LIBC |
| 1105 enum { POSIXLY_CORRECT = 0 }; |
| 1106 #else |
| 1107 enum { POSIXLY_CORRECT = 1 }; |
| 1108 #endif |
| 1109 |
| 1110 int |
| 1111 getopt (int argc, char *const *argv, const char *optstring) |
| 1112 { |
| 1113 return _getopt_internal (argc, (char **) argv, optstring, NULL, NULL, 0, |
| 1114 POSIXLY_CORRECT); |
| 1115 } |
| 1116 |
| 1117 |
| 1118 #ifdef TEST |
| 1119 |
| 1120 /* Compile with -DTEST to make an executable for use in testing |
| 1121 the above definition of `getopt'. */ |
| 1122 |
| 1123 int |
| 1124 main (int argc, char **argv) |
| 1125 { |
| 1126 int c; |
| 1127 int digit_optind = 0; |
| 1128 |
| 1129 while (1) |
| 1130 { |
| 1131 int this_option_optind = optind ? optind : 1; |
| 1132 |
| 1133 c = getopt (argc, argv, "abc:d:0123456789"); |
| 1134 if (c == -1) |
| 1135 break; |
| 1136 |
| 1137 switch (c) |
| 1138 { |
| 1139 case '0': |
| 1140 case '1': |
| 1141 case '2': |
| 1142 case '3': |
| 1143 case '4': |
| 1144 case '5': |
| 1145 case '6': |
| 1146 case '7': |
| 1147 case '8': |
| 1148 case '9': |
| 1149 if (digit_optind != 0 && digit_optind != this_option_optind) |
| 1150 printf ("digits occur in two different argv-elements.\n"); |
| 1151 digit_optind = this_option_optind; |
| 1152 printf ("option %c\n", c); |
| 1153 break; |
| 1154 |
| 1155 case 'a': |
| 1156 printf ("option a\n"); |
| 1157 break; |
| 1158 |
| 1159 case 'b': |
| 1160 printf ("option b\n"); |
| 1161 break; |
| 1162 |
| 1163 case 'c': |
| 1164 printf ("option c with value `%s'\n", optarg); |
| 1165 break; |
| 1166 |
| 1167 case '?': |
| 1168 break; |
| 1169 |
| 1170 default: |
| 1171 printf ("?? getopt returned character code 0%o ??\n", c); |
| 1172 } |
| 1173 } |
| 1174 |
| 1175 if (optind < argc) |
| 1176 { |
| 1177 printf ("non-option ARGV-elements: "); |
| 1178 while (optind < argc) |
| 1179 printf ("%s ", argv[optind++]); |
| 1180 printf ("\n"); |
| 1181 } |
| 1182 |
| 1183 exit (0); |
| 1184 } |
| 1185 |
| 1186 #endif /* TEST */ |
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