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 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 2, or (at your option) 12 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 along 20 with this program; if not, write to the Free Software Foundation, 21 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 22 23/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. 24 Ditto for AIX 3.2 and <stdlib.h>. */ 25#ifndef _NO_PROTO 26# define _NO_PROTO 27#endif 28 29#ifdef HAVE_CONFIG_H 30# include <config.h> 31#endif 32 33#include <stdio.h> 34 35/* This needs to come after some library #include 36 to get __GNU_LIBRARY__ defined. */ 37#ifdef __GNU_LIBRARY__ 38/* Don't include stdlib.h for non-GNU C libraries because some of them 39 contain conflicting prototypes for getopt. */ 40# include <stdlib.h> 41# include <unistd.h> 42#endif /* GNU C library. */ 43 44#include <string.h> 45 46#ifdef VMS 47# include <unixlib.h> 48#endif 49 50#ifdef _LIBC 51# include <libintl.h> 52#else 53# include "gettext.h" 54# define _(msgid) gettext (msgid) 55#endif 56 57#if defined _LIBC && defined USE_IN_LIBIO 58# include <wchar.h> 59#endif 60 61#ifndef attribute_hidden 62# define attribute_hidden 63#endif 64 65/* This version of `getopt' appears to the caller like standard Unix `getopt' 66 but it behaves differently for the user, since it allows the user 67 to intersperse the options with the other arguments. 68 69 As `getopt' works, it permutes the elements of ARGV so that, 70 when it is done, all the options precede everything else. Thus 71 all application programs are extended to handle flexible argument order. 72 73 Setting the environment variable POSIXLY_CORRECT disables permutation. 74 Then the behavior is completely standard. 75 76 GNU application programs can use a third alternative mode in which 77 they can distinguish the relative order of options and other arguments. */ 78 79#include "getopt.h" 80#include "getopt_int.h" 81 82/* For communication from `getopt' to the caller. 83 When `getopt' finds an option that takes an argument, 84 the argument value is returned here. 85 Also, when `ordering' is RETURN_IN_ORDER, 86 each non-option ARGV-element is returned here. */ 87 88char *optarg; 89 90/* Index in ARGV of the next element to be scanned. 91 This is used for communication to and from the caller 92 and for communication between successive calls to `getopt'. 93 94 On entry to `getopt', zero means this is the first call; initialize. 95 96 When `getopt' returns -1, this is the index of the first of the 97 non-option elements that the caller should itself scan. 98 99 Otherwise, `optind' communicates from one call to the next 100 how much of ARGV has been scanned so far. */ 101 102/* 1003.2 says this must be 1 before any call. */ 103int optind = 1; 104 105/* Callers store zero here to inhibit the error message 106 for unrecognized options. */ 107 108int opterr = 1; 109 110/* Set to an option character which was unrecognized. 111 This must be initialized on some systems to avoid linking in the 112 system's own getopt implementation. */ 113 114int optopt = '?'; 115 116/* Keep a global copy of all internal members of getopt_data. */ 117 118static struct _getopt_data getopt_data; 119 120 121#ifndef __GNU_LIBRARY__ 122 123/* Avoid depending on library functions or files 124 whose names are inconsistent. */ 125 126#ifndef getenv 127extern char *getenv (); 128#endif 129 130#endif /* not __GNU_LIBRARY__ */ 131 132#ifdef _LIBC 133/* Stored original parameters. 134 XXX This is no good solution. We should rather copy the args so 135 that we can compare them later. But we must not use malloc(3). */ 136extern int __libc_argc; 137extern char **__libc_argv; 138 139/* Bash 2.0 gives us an environment variable containing flags 140 indicating ARGV elements that should not be considered arguments. */ 141 142# ifdef USE_NONOPTION_FLAGS 143/* Defined in getopt_init.c */ 144extern char *__getopt_nonoption_flags; 145# endif 146 147# ifdef USE_NONOPTION_FLAGS 148# define SWAP_FLAGS(ch1, ch2) \ 149 if (d->__nonoption_flags_len > 0) \ 150 { \ 151 char __tmp = __getopt_nonoption_flags[ch1]; \ 152 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \ 153 __getopt_nonoption_flags[ch2] = __tmp; \ 154 } 155# else 156# define SWAP_FLAGS(ch1, ch2) 157# endif 158#else /* !_LIBC */ 159# define SWAP_FLAGS(ch1, ch2) 160#endif /* _LIBC */ 161 162/* Exchange two adjacent subsequences of ARGV. 163 One subsequence is elements [first_nonopt,last_nonopt) 164 which contains all the non-options that have been skipped so far. 165 The other is elements [last_nonopt,optind), which contains all 166 the options processed since those non-options were skipped. 167 168 `first_nonopt' and `last_nonopt' are relocated so that they describe 169 the new indices of the non-options in ARGV after they are moved. */ 170 171static void 172exchange (char **argv, struct _getopt_data *d) 173{ 174 int bottom = d->__first_nonopt; 175 int middle = d->__last_nonopt; 176 int top = d->optind; 177 char *tem; 178 179 /* Exchange the shorter segment with the far end of the longer segment. 180 That puts the shorter segment into the right place. 181 It leaves the longer segment in the right place overall, 182 but it consists of two parts that need to be swapped next. */ 183 184#if defined _LIBC && defined USE_NONOPTION_FLAGS 185 /* First make sure the handling of the `__getopt_nonoption_flags' 186 string can work normally. Our top argument must be in the range 187 of the string. */ 188 if (d->__nonoption_flags_len > 0 && top >= d->__nonoption_flags_max_len) 189 { 190 /* We must extend the array. The user plays games with us and 191 presents new arguments. */ 192 char *new_str = malloc (top + 1); 193 if (new_str == NULL) 194 d->__nonoption_flags_len = d->__nonoption_flags_max_len = 0; 195 else 196 { 197 memset (__mempcpy (new_str, __getopt_nonoption_flags, 198 d->__nonoption_flags_max_len), 199 '\0', top + 1 - d->__nonoption_flags_max_len); 200 d->__nonoption_flags_max_len = top + 1; 201 __getopt_nonoption_flags = new_str; 202 } 203 } 204#endif 205 206 while (top > middle && middle > bottom) 207 { 208 if (top - middle > middle - bottom) 209 { 210 /* Bottom segment is the short one. */ 211 int len = middle - bottom; 212 register int i; 213 214 /* Swap it with the top part of the top segment. */ 215 for (i = 0; i < len; i++) 216 { 217 tem = argv[bottom + i]; 218 argv[bottom + i] = argv[top - (middle - bottom) + i]; 219 argv[top - (middle - bottom) + i] = tem; 220 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i); 221 } 222 /* Exclude the moved bottom segment from further swapping. */ 223 top -= len; 224 } 225 else 226 { 227 /* Top segment is the short one. */ 228 int len = top - middle; 229 register int i; 230 231 /* Swap it with the bottom part of the bottom segment. */ 232 for (i = 0; i < len; i++) 233 { 234 tem = argv[bottom + i]; 235 argv[bottom + i] = argv[middle + i]; 236 argv[middle + i] = tem; 237 SWAP_FLAGS (bottom + i, middle + i); 238 } 239 /* Exclude the moved top segment from further swapping. */ 240 bottom += len; 241 } 242 } 243 244 /* Update records for the slots the non-options now occupy. */ 245 246 d->__first_nonopt += (d->optind - d->__last_nonopt); 247 d->__last_nonopt = d->optind; 248} 249 250/* Initialize the internal data when the first call is made. */ 251 252static const char * 253_getopt_initialize (int argc, char *const *argv, const char *optstring, 254 struct _getopt_data *d) 255{ 256 /* Start processing options with ARGV-element 1 (since ARGV-element 0 257 is the program name); the sequence of previously skipped 258 non-option ARGV-elements is empty. */ 259 260 d->__first_nonopt = d->__last_nonopt = d->optind; 261 262 d->__nextchar = NULL; 263 264 d->__posixly_correct = !!getenv ("POSIXLY_CORRECT"); 265 266 /* Determine how to handle the ordering of options and nonoptions. */ 267 268 if (optstring[0] == '-') 269 { 270 d->__ordering = RETURN_IN_ORDER; 271 ++optstring; 272 } 273 else if (optstring[0] == '+') 274 { 275 d->__ordering = REQUIRE_ORDER; 276 ++optstring; 277 } 278 else if (d->__posixly_correct) 279 d->__ordering = REQUIRE_ORDER; 280 else 281 d->__ordering = PERMUTE; 282 283#if defined _LIBC && defined USE_NONOPTION_FLAGS 284 if (!d->__posixly_correct 285 && argc == __libc_argc && argv == __libc_argv) 286 { 287 if (d->__nonoption_flags_max_len == 0) 288 { 289 if (__getopt_nonoption_flags == NULL 290 || __getopt_nonoption_flags[0] == '\0') 291 d->__nonoption_flags_max_len = -1; 292 else 293 { 294 const char *orig_str = __getopt_nonoption_flags; 295 int len = d->__nonoption_flags_max_len = strlen (orig_str); 296 if (d->__nonoption_flags_max_len < argc) 297 d->__nonoption_flags_max_len = argc; 298 __getopt_nonoption_flags = 299 (char *) malloc (d->__nonoption_flags_max_len); 300 if (__getopt_nonoption_flags == NULL) 301 d->__nonoption_flags_max_len = -1; 302 else 303 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len), 304 '\0', d->__nonoption_flags_max_len - len); 305 } 306 } 307 d->__nonoption_flags_len = d->__nonoption_flags_max_len; 308 } 309 else 310 d->__nonoption_flags_len = 0; 311#endif 312 313 return optstring; 314} 315 316/* Scan elements of ARGV (whose length is ARGC) for option characters 317 given in OPTSTRING. 318 319 If an element of ARGV starts with '-', and is not exactly "-" or "--", 320 then it is an option element. The characters of this element 321 (aside from the initial '-') are option characters. If `getopt' 322 is called repeatedly, it returns successively each of the option characters 323 from each of the option elements. 324 325 If `getopt' finds another option character, it returns that character, 326 updating `optind' and `nextchar' so that the next call to `getopt' can 327 resume the scan with the following option character or ARGV-element. 328 329 If there are no more option characters, `getopt' returns -1. 330 Then `optind' is the index in ARGV of the first ARGV-element 331 that is not an option. (The ARGV-elements have been permuted 332 so that those that are not options now come last.) 333 334 OPTSTRING is a string containing the legitimate option characters. 335 If an option character is seen that is not listed in OPTSTRING, 336 return '?' after printing an error message. If you set `opterr' to 337 zero, the error message is suppressed but we still return '?'. 338 339 If a char in OPTSTRING is followed by a colon, that means it wants an arg, 340 so the following text in the same ARGV-element, or the text of the following 341 ARGV-element, is returned in `optarg'. Two colons mean an option that 342 wants an optional arg; if there is text in the current ARGV-element, 343 it is returned in `optarg', otherwise `optarg' is set to zero. 344 345 If OPTSTRING starts with `-' or `+', it requests different methods of 346 handling the non-option ARGV-elements. 347 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. 348 349 Long-named options begin with `--' instead of `-'. 350 Their names may be abbreviated as long as the abbreviation is unique 351 or is an exact match for some defined option. If they have an 352 argument, it follows the option name in the same ARGV-element, separated 353 from the option name by a `=', or else the in next ARGV-element. 354 When `getopt' finds a long-named option, it returns 0 if that option's 355 `flag' field is nonzero, the value of the option's `val' field 356 if the `flag' field is zero. 357 358 The elements of ARGV aren't really const, because we permute them. 359 But we pretend they're const in the prototype to be compatible 360 with other systems. 361 362 LONGOPTS is a vector of `struct option' terminated by an 363 element containing a name which is zero. 364 365 LONGIND returns the index in LONGOPT of the long-named option found. 366 It is only valid when a long-named option has been found by the most 367 recent call. 368 369 If LONG_ONLY is nonzero, '-' as well as '--' can introduce 370 long-named options. */ 371 372int 373_getopt_internal_r (int argc, char *const *argv, const char *optstring, 374 const struct option *longopts, int *longind, 375 int long_only, struct _getopt_data *d) 376{ 377 int print_errors = d->opterr; 378 if (optstring[0] == ':') 379 print_errors = 0; 380 381 if (argc < 1) 382 return -1; 383 384 d->optarg = NULL; 385 386 if (d->optind == 0 || !d->__initialized) 387 { 388 if (d->optind == 0) 389 d->optind = 1; /* Don't scan ARGV[0], the program name. */ 390 optstring = _getopt_initialize (argc, argv, optstring, d); 391 d->__initialized = 1; 392 } 393 394 /* Test whether ARGV[optind] points to a non-option argument. 395 Either it does not have option syntax, or there is an environment flag 396 from the shell indicating it is not an option. The later information 397 is only used when the used in the GNU libc. */ 398#if defined _LIBC && defined USE_NONOPTION_FLAGS 399# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0' \ 400 || (d->optind < d->__nonoption_flags_len \ 401 && __getopt_nonoption_flags[d->optind] == '1')) 402#else 403# define NONOPTION_P (argv[d->optind][0] != '-' || argv[d->optind][1] == '\0') 404#endif 405 406 if (d->__nextchar == NULL || *d->__nextchar == '\0') 407 { 408 /* Advance to the next ARGV-element. */ 409 410 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been 411 moved back by the user (who may also have changed the arguments). */ 412 if (d->__last_nonopt > d->optind) 413 d->__last_nonopt = d->optind; 414 if (d->__first_nonopt > d->optind) 415 d->__first_nonopt = d->optind; 416 417 if (d->__ordering == PERMUTE) 418 { 419 /* If we have just processed some options following some non-options, 420 exchange them so that the options come first. */ 421 422 if (d->__first_nonopt != d->__last_nonopt 423 && d->__last_nonopt != d->optind) 424 exchange ((char **) argv, d); 425 else if (d->__last_nonopt != d->optind) 426 d->__first_nonopt = d->optind; 427 428 /* Skip any additional non-options 429 and extend the range of non-options previously skipped. */ 430 431 while (d->optind < argc && NONOPTION_P) 432 d->optind++; 433 d->__last_nonopt = d->optind; 434 } 435 436 /* The special ARGV-element `--' means premature end of options. 437 Skip it like a null option, 438 then exchange with previous non-options as if it were an option, 439 then skip everything else like a non-option. */ 440 441 if (d->optind != argc && !strcmp (argv[d->optind], "--")) 442 { 443 d->optind++; 444 445 if (d->__first_nonopt != d->__last_nonopt 446 && d->__last_nonopt != d->optind) 447 exchange ((char **) argv, d); 448 else if (d->__first_nonopt == d->__last_nonopt) 449 d->__first_nonopt = d->optind; 450 d->__last_nonopt = argc; 451 452 d->optind = argc; 453 } 454 455 /* If we have done all the ARGV-elements, stop the scan 456 and back over any non-options that we skipped and permuted. */ 457 458 if (d->optind == argc) 459 { 460 /* Set the next-arg-index to point at the non-options 461 that we previously skipped, so the caller will digest them. */ 462 if (d->__first_nonopt != d->__last_nonopt) 463 d->optind = d->__first_nonopt; 464 return -1; 465 } 466 467 /* If we have come to a non-option and did not permute it, 468 either stop the scan or describe it to the caller and pass it by. */ 469 470 if (NONOPTION_P) 471 { 472 if (d->__ordering == REQUIRE_ORDER) 473 return -1; 474 d->optarg = argv[d->optind++]; 475 return 1; 476 } 477 478 /* We have found another option-ARGV-element. 479 Skip the initial punctuation. */ 480 481 d->__nextchar = (argv[d->optind] + 1 482 + (longopts != NULL && argv[d->optind][1] == '-')); 483 } 484 485 /* Decode the current option-ARGV-element. */ 486 487 /* Check whether the ARGV-element is a long option. 488 489 If long_only and the ARGV-element has the form "-f", where f is 490 a valid short option, don't consider it an abbreviated form of 491 a long option that starts with f. Otherwise there would be no 492 way to give the -f short option. 493 494 On the other hand, if there's a long option "fubar" and 495 the ARGV-element is "-fu", do consider that an abbreviation of 496 the long option, just like "--fu", and not "-f" with arg "u". 497 498 This distinction seems to be the most useful approach. */ 499 500 if (longopts != NULL 501 && (argv[d->optind][1] == '-' 502 || (long_only && (argv[d->optind][2] 503 || !strchr (optstring, argv[d->optind][1]))))) 504 { 505 char *nameend; 506 const struct option *p; 507 const struct option *pfound = NULL; 508 int exact = 0; 509 int ambig = 0; 510 int indfound = -1; 511 int option_index; 512 513 for (nameend = d->__nextchar; *nameend && *nameend != '='; nameend++) 514 /* Do nothing. */ ; 515 516 /* Test all long options for either exact match 517 or abbreviated matches. */ 518 for (p = longopts, option_index = 0; p->name; p++, option_index++) 519 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar)) 520 { 521 if ((unsigned int) (nameend - d->__nextchar) 522 == (unsigned int) strlen (p->name)) 523 { 524 /* Exact match found. */ 525 pfound = p; 526 indfound = option_index; 527 exact = 1; 528 break; 529 } 530 else if (pfound == NULL) 531 { 532 /* First nonexact match found. */ 533 pfound = p; 534 indfound = option_index; 535 } 536 else if (long_only 537 || pfound->has_arg != p->has_arg 538 || pfound->flag != p->flag 539 || pfound->val != p->val) 540 /* Second or later nonexact match found. */ 541 ambig = 1; 542 } 543 544 if (ambig && !exact) 545 { 546 if (print_errors) 547 { 548#if defined _LIBC && defined USE_IN_LIBIO 549 char *buf; 550 551 if (__asprintf (&buf, _("%s: option `%s' is ambiguous\n"), 552 argv[0], argv[d->optind]) >= 0) 553 { 554 _IO_flockfile (stderr); 555 556 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 557 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; 558 559 if (_IO_fwide (stderr, 0) > 0) 560 __fwprintf (stderr, L"%s", buf); 561 else 562 fputs (buf, stderr); 563 564 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 565 _IO_funlockfile (stderr); 566 567 free (buf); 568 } 569#else 570 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), 571 argv[0], argv[d->optind]); 572#endif 573 } 574 d->__nextchar += strlen (d->__nextchar); 575 d->optind++; 576 d->optopt = 0; 577 return '?'; 578 } 579 580 if (pfound != NULL) 581 { 582 option_index = indfound; 583 d->optind++; 584 if (*nameend) 585 { 586 /* Don't test has_arg with >, because some C compilers don't 587 allow it to be used on enums. */ 588 if (pfound->has_arg) 589 d->optarg = nameend + 1; 590 else 591 { 592 if (print_errors) 593 { 594#if defined _LIBC && defined USE_IN_LIBIO 595 char *buf; 596 int n; 597#endif 598 599 if (argv[d->optind - 1][1] == '-') 600 { 601 /* --option */ 602#if defined _LIBC && defined USE_IN_LIBIO 603 n = __asprintf (&buf, _("\ 604%s: option `--%s' doesn't allow an argument\n"), 605 argv[0], pfound->name); 606#else 607 fprintf (stderr, _("\ 608%s: option `--%s' doesn't allow an argument\n"), 609 argv[0], pfound->name); 610#endif 611 } 612 else 613 { 614 /* +option or -option */ 615#if defined _LIBC && defined USE_IN_LIBIO 616 n = __asprintf (&buf, _("\ 617%s: option `%c%s' doesn't allow an argument\n"), 618 argv[0], argv[d->optind - 1][0], 619 pfound->name); 620#else 621 fprintf (stderr, _("\ 622%s: option `%c%s' doesn't allow an argument\n"), 623 argv[0], argv[d->optind - 1][0], 624 pfound->name); 625#endif 626 } 627 628#if defined _LIBC && defined USE_IN_LIBIO 629 if (n >= 0) 630 { 631 _IO_flockfile (stderr); 632 633 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 634 ((_IO_FILE *) stderr)->_flags2 635 |= _IO_FLAGS2_NOTCANCEL; 636 637 if (_IO_fwide (stderr, 0) > 0) 638 __fwprintf (stderr, L"%s", buf); 639 else 640 fputs (buf, stderr); 641 642 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 643 _IO_funlockfile (stderr); 644 645 free (buf); 646 } 647#endif 648 } 649 650 d->__nextchar += strlen (d->__nextchar); 651 652 d->optopt = pfound->val; 653 return '?'; 654 } 655 } 656 else if (pfound->has_arg == 1) 657 { 658 if (d->optind < argc) 659 d->optarg = argv[d->optind++]; 660 else 661 { 662 if (print_errors) 663 { 664#if defined _LIBC && defined USE_IN_LIBIO 665 char *buf; 666 667 if (__asprintf (&buf, _("\ 668%s: option `%s' requires an argument\n"), 669 argv[0], argv[d->optind - 1]) >= 0) 670 { 671 _IO_flockfile (stderr); 672 673 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 674 ((_IO_FILE *) stderr)->_flags2 675 |= _IO_FLAGS2_NOTCANCEL; 676 677 if (_IO_fwide (stderr, 0) > 0) 678 __fwprintf (stderr, L"%s", buf); 679 else 680 fputs (buf, stderr); 681 682 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 683 _IO_funlockfile (stderr); 684 685 free (buf); 686 } 687#else 688 fprintf (stderr, 689 _("%s: option `%s' requires an argument\n"), 690 argv[0], argv[d->optind - 1]); 691#endif 692 } 693 d->__nextchar += strlen (d->__nextchar); 694 d->optopt = pfound->val; 695 return optstring[0] == ':' ? ':' : '?'; 696 } 697 } 698 d->__nextchar += strlen (d->__nextchar); 699 if (longind != NULL) 700 *longind = option_index; 701 if (pfound->flag) 702 { 703 *(pfound->flag) = pfound->val; 704 return 0; 705 } 706 return pfound->val; 707 } 708 709 /* Can't find it as a long option. If this is not getopt_long_only, 710 or the option starts with '--' or is not a valid short 711 option, then it's an error. 712 Otherwise interpret it as a short option. */ 713 if (!long_only || argv[d->optind][1] == '-' 714 || strchr (optstring, *d->__nextchar) == NULL) 715 { 716 if (print_errors) 717 { 718#if defined _LIBC && defined USE_IN_LIBIO 719 char *buf; 720 int n; 721#endif 722 723 if (argv[d->optind][1] == '-') 724 { 725 /* --option */ 726#if defined _LIBC && defined USE_IN_LIBIO 727 n = __asprintf (&buf, _("%s: unrecognized option `--%s'\n"), 728 argv[0], d->__nextchar); 729#else 730 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), 731 argv[0], d->__nextchar); 732#endif 733 } 734 else 735 { 736 /* +option or -option */ 737#if defined _LIBC && defined USE_IN_LIBIO 738 n = __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"), 739 argv[0], argv[d->optind][0], d->__nextchar); 740#else 741 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), 742 argv[0], argv[d->optind][0], d->__nextchar); 743#endif 744 } 745 746#if defined _LIBC && defined USE_IN_LIBIO 747 if (n >= 0) 748 { 749 _IO_flockfile (stderr); 750 751 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 752 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; 753 754 if (_IO_fwide (stderr, 0) > 0) 755 __fwprintf (stderr, L"%s", buf); 756 else 757 fputs (buf, stderr); 758 759 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 760 _IO_funlockfile (stderr); 761 762 free (buf); 763 } 764#endif 765 } 766 d->__nextchar = (char *) ""; 767 d->optind++; 768 d->optopt = 0; 769 return '?'; 770 } 771 } 772 773 /* Look at and handle the next short option-character. */ 774 775 { 776 char c = *d->__nextchar++; 777 char *temp = strchr (optstring, c); 778 779 /* Increment `optind' when we start to process its last character. */ 780 if (*d->__nextchar == '\0') 781 ++d->optind; 782 783 if (temp == NULL || c == ':') 784 { 785 if (print_errors) 786 { 787#if defined _LIBC && defined USE_IN_LIBIO 788 char *buf; 789 int n; 790#endif 791 792 if (d->__posixly_correct) 793 { 794 /* 1003.2 specifies the format of this message. */ 795#if defined _LIBC && defined USE_IN_LIBIO 796 n = __asprintf (&buf, _("%s: illegal option -- %c\n"), 797 argv[0], c); 798#else 799 fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c); 800#endif 801 } 802 else 803 { 804#if defined _LIBC && defined USE_IN_LIBIO 805 n = __asprintf (&buf, _("%s: invalid option -- %c\n"), 806 argv[0], c); 807#else 808 fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c); 809#endif 810 } 811 812#if defined _LIBC && defined USE_IN_LIBIO 813 if (n >= 0) 814 { 815 _IO_flockfile (stderr); 816 817 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 818 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; 819 820 if (_IO_fwide (stderr, 0) > 0) 821 __fwprintf (stderr, L"%s", buf); 822 else 823 fputs (buf, stderr); 824 825 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 826 _IO_funlockfile (stderr); 827 828 free (buf); 829 } 830#endif 831 } 832 d->optopt = c; 833 return '?'; 834 } 835 /* Convenience. Treat POSIX -W foo same as long option --foo */ 836 if (temp[0] == 'W' && temp[1] == ';') 837 { 838 char *nameend; 839 const struct option *p; 840 const struct option *pfound = NULL; 841 int exact = 0; 842 int ambig = 0; 843 int indfound = 0; 844 int option_index; 845 846 /* This is an option that requires an argument. */ 847 if (*d->__nextchar != '\0') 848 { 849 d->optarg = d->__nextchar; 850 /* If we end this ARGV-element by taking the rest as an arg, 851 we must advance to the next element now. */ 852 d->optind++; 853 } 854 else if (d->optind == argc) 855 { 856 if (print_errors) 857 { 858 /* 1003.2 specifies the format of this message. */ 859#if defined _LIBC && defined USE_IN_LIBIO 860 char *buf; 861 862 if (__asprintf (&buf, 863 _("%s: option requires an argument -- %c\n"), 864 argv[0], c) >= 0) 865 { 866 _IO_flockfile (stderr); 867 868 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 869 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; 870 871 if (_IO_fwide (stderr, 0) > 0) 872 __fwprintf (stderr, L"%s", buf); 873 else 874 fputs (buf, stderr); 875 876 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 877 _IO_funlockfile (stderr); 878 879 free (buf); 880 } 881#else 882 fprintf (stderr, _("%s: option requires an argument -- %c\n"), 883 argv[0], c); 884#endif 885 } 886 d->optopt = c; 887 if (optstring[0] == ':') 888 c = ':'; 889 else 890 c = '?'; 891 return c; 892 } 893 else 894 /* We already incremented `d->optind' once; 895 increment it again when taking next ARGV-elt as argument. */ 896 d->optarg = argv[d->optind++]; 897 898 /* optarg is now the argument, see if it's in the 899 table of longopts. */ 900 901 for (d->__nextchar = nameend = d->optarg; *nameend && *nameend != '='; 902 nameend++) 903 /* Do nothing. */ ; 904 905 /* Test all long options for either exact match 906 or abbreviated matches. */ 907 for (p = longopts, option_index = 0; p->name; p++, option_index++) 908 if (!strncmp (p->name, d->__nextchar, nameend - d->__nextchar)) 909 { 910 if ((unsigned int) (nameend - d->__nextchar) == strlen (p->name)) 911 { 912 /* Exact match found. */ 913 pfound = p; 914 indfound = option_index; 915 exact = 1; 916 break; 917 } 918 else if (pfound == NULL) 919 { 920 /* First nonexact match found. */ 921 pfound = p; 922 indfound = option_index; 923 } 924 else 925 /* Second or later nonexact match found. */ 926 ambig = 1; 927 } 928 if (ambig && !exact) 929 { 930 if (print_errors) 931 { 932#if defined _LIBC && defined USE_IN_LIBIO 933 char *buf; 934 935 if (__asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"), 936 argv[0], argv[d->optind]) >= 0) 937 { 938 _IO_flockfile (stderr); 939 940 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 941 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; 942 943 if (_IO_fwide (stderr, 0) > 0) 944 __fwprintf (stderr, L"%s", buf); 945 else 946 fputs (buf, stderr); 947 948 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 949 _IO_funlockfile (stderr); 950 951 free (buf); 952 } 953#else 954 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), 955 argv[0], argv[d->optind]); 956#endif 957 } 958 d->__nextchar += strlen (d->__nextchar); 959 d->optind++; 960 return '?'; 961 } 962 if (pfound != NULL) 963 { 964 option_index = indfound; 965 if (*nameend) 966 { 967 /* Don't test has_arg with >, because some C compilers don't 968 allow it to be used on enums. */ 969 if (pfound->has_arg) 970 d->optarg = nameend + 1; 971 else 972 { 973 if (print_errors) 974 { 975#if defined _LIBC && defined USE_IN_LIBIO 976 char *buf; 977 978 if (__asprintf (&buf, _("\ 979%s: option `-W %s' doesn't allow an argument\n"), 980 argv[0], pfound->name) >= 0) 981 { 982 _IO_flockfile (stderr); 983 984 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 985 ((_IO_FILE *) stderr)->_flags2 986 |= _IO_FLAGS2_NOTCANCEL; 987 988 if (_IO_fwide (stderr, 0) > 0) 989 __fwprintf (stderr, L"%s", buf); 990 else 991 fputs (buf, stderr); 992 993 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 994 _IO_funlockfile (stderr); 995 996 free (buf); 997 } 998#else 999 fprintf (stderr, _("\ 1000%s: option `-W %s' doesn't allow an argument\n"), 1001 argv[0], pfound->name); 1002#endif 1003 } 1004 1005 d->__nextchar += strlen (d->__nextchar); 1006 return '?'; 1007 } 1008 } 1009 else if (pfound->has_arg == 1) 1010 { 1011 if (d->optind < argc) 1012 d->optarg = argv[d->optind++]; 1013 else 1014 { 1015 if (print_errors) 1016 { 1017#if defined _LIBC && defined USE_IN_LIBIO 1018 char *buf; 1019 1020 if (__asprintf (&buf, _("\ 1021%s: option `%s' requires an argument\n"), 1022 argv[0], argv[d->optind - 1]) >= 0) 1023 { 1024 _IO_flockfile (stderr); 1025 1026 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 1027 ((_IO_FILE *) stderr)->_flags2 1028 |= _IO_FLAGS2_NOTCANCEL; 1029 1030 if (_IO_fwide (stderr, 0) > 0) 1031 __fwprintf (stderr, L"%s", buf); 1032 else 1033 fputs (buf, stderr); 1034 1035 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 1036 _IO_funlockfile (stderr); 1037 1038 free (buf); 1039 } 1040#else 1041 fprintf (stderr, 1042 _("%s: option `%s' requires an argument\n"), 1043 argv[0], argv[d->optind - 1]); 1044#endif 1045 } 1046 d->__nextchar += strlen (d->__nextchar); 1047 return optstring[0] == ':' ? ':' : '?'; 1048 } 1049 } 1050 d->__nextchar += strlen (d->__nextchar); 1051 if (longind != NULL) 1052 *longind = option_index; 1053 if (pfound->flag) 1054 { 1055 *(pfound->flag) = pfound->val; 1056 return 0; 1057 } 1058 return pfound->val; 1059 } 1060 d->__nextchar = NULL; 1061 return 'W'; /* Let the application handle it. */ 1062 } 1063 if (temp[1] == ':') 1064 { 1065 if (temp[2] == ':') 1066 { 1067 /* This is an option that accepts an argument optionally. */ 1068 if (*d->__nextchar != '\0') 1069 { 1070 d->optarg = d->__nextchar; 1071 d->optind++; 1072 } 1073 else 1074 d->optarg = NULL; 1075 d->__nextchar = NULL; 1076 } 1077 else 1078 { 1079 /* This is an option that requires an argument. */ 1080 if (*d->__nextchar != '\0') 1081 { 1082 d->optarg = d->__nextchar; 1083 /* If we end this ARGV-element by taking the rest as an arg, 1084 we must advance to the next element now. */ 1085 d->optind++; 1086 } 1087 else if (d->optind == argc) 1088 { 1089 if (print_errors) 1090 { 1091 /* 1003.2 specifies the format of this message. */ 1092#if defined _LIBC && defined USE_IN_LIBIO 1093 char *buf; 1094 1095 if (__asprintf (&buf, _("\ 1096%s: option requires an argument -- %c\n"), 1097 argv[0], c) >= 0) 1098 { 1099 _IO_flockfile (stderr); 1100 1101 int old_flags2 = ((_IO_FILE *) stderr)->_flags2; 1102 ((_IO_FILE *) stderr)->_flags2 |= _IO_FLAGS2_NOTCANCEL; 1103 1104 if (_IO_fwide (stderr, 0) > 0) 1105 __fwprintf (stderr, L"%s", buf); 1106 else 1107 fputs (buf, stderr); 1108 1109 ((_IO_FILE *) stderr)->_flags2 = old_flags2; 1110 _IO_funlockfile (stderr); 1111 1112 free (buf); 1113 } 1114#else 1115 fprintf (stderr, 1116 _("%s: option requires an argument -- %c\n"), 1117 argv[0], c); 1118#endif 1119 } 1120 d->optopt = c; 1121 if (optstring[0] == ':') 1122 c = ':'; 1123 else 1124 c = '?'; 1125 } 1126 else 1127 /* We already incremented `optind' once; 1128 increment it again when taking next ARGV-elt as argument. */ 1129 d->optarg = argv[d->optind++]; 1130 d->__nextchar = NULL; 1131 } 1132 } 1133 return c; 1134 } 1135} 1136 1137int 1138_getopt_internal (int argc, char *const *argv, const char *optstring, 1139 const struct option *longopts, int *longind, int long_only) 1140{ 1141 int result; 1142 1143 getopt_data.optind = optind; 1144 getopt_data.opterr = opterr; 1145 1146 result = _getopt_internal_r (argc, argv, optstring, longopts, 1147 longind, long_only, &getopt_data); 1148 1149 optind = getopt_data.optind; 1150 optarg = getopt_data.optarg; 1151 optopt = getopt_data.optopt; 1152 1153 return result; 1154} 1155 1156int 1157getopt (int argc, char *const *argv, const char *optstring) 1158{ 1159 return _getopt_internal (argc, argv, optstring, 1160 (const struct option *) 0, 1161 (int *) 0, 1162 0); 1163} 1164 1165 1166#ifdef TEST 1167 1168/* Compile with -DTEST to make an executable for use in testing 1169 the above definition of `getopt'. */ 1170 1171int 1172main (int argc, char **argv) 1173{ 1174 int c; 1175 int digit_optind = 0; 1176 1177 while (1) 1178 { 1179 int this_option_optind = optind ? optind : 1; 1180 1181 c = getopt (argc, argv, "abc:d:0123456789"); 1182 if (c == -1) 1183 break; 1184 1185 switch (c) 1186 { 1187 case '0': 1188 case '1': 1189 case '2': 1190 case '3': 1191 case '4': 1192 case '5': 1193 case '6': 1194 case '7': 1195 case '8': 1196 case '9': 1197 if (digit_optind != 0 && digit_optind != this_option_optind) 1198 printf ("digits occur in two different argv-elements.\n"); 1199 digit_optind = this_option_optind; 1200 printf ("option %c\n", c); 1201 break; 1202 1203 case 'a': 1204 printf ("option a\n"); 1205 break; 1206 1207 case 'b': 1208 printf ("option b\n"); 1209 break; 1210 1211 case 'c': 1212 printf ("option c with value `%s'\n", optarg); 1213 break; 1214 1215 case '?': 1216 break; 1217 1218 default: 1219 printf ("?? getopt returned character code 0%o ??\n", c); 1220 } 1221 } 1222 1223 if (optind < argc) 1224 { 1225 printf ("non-option ARGV-elements: "); 1226 while (optind < argc) 1227 printf ("%s ", argv[optind++]); 1228 printf ("\n"); 1229 } 1230 1231 exit (0); 1232} 1233 1234#endif /* TEST */ 1235